阅读说明：本技术 低豆腥味低温脱脂豆粕的生产装置及其制备方法 (Production device of low-temperature defatted soybean meal with low beany flavor and preparation method thereof ) 是由 时玉强 万华松 时秀芹 陶涛 于 2021-03-05 设计创作，主要内容包括：本发明提出一种低豆腥味低温脱脂豆粕的生产装置及其制备方法,属于大豆深加工技术领域,能够解决现有豆粕制品的生产方法存在豆腥味严重、豆粕品质低等的技术问题。该制备方法包括：(1)杂质筛分；(2)原料色选；(3)干燥；(4)破瓣与灭酶；(5)闪蒸脱气；(6)辊压与浸提；(7)真空脱溶,其中,蒸汽灭酶处理具体为豆瓣于蒸汽灭酶器中升温至85-90℃后,再于灭酶罐中处理2-15mi n。利用本发明提供的生产装置及其制备方法制得的豆粕具有低豆腥味等特点。本发明能够应用于低豆腥味脱脂豆粕制备方面。(The invention provides a production device of low-temperature defatted soybean meal with low beany flavor and a preparation method thereof, belongs to the technical field of soybean deep processing, and can solve the technical problems of serious beany flavor, low soybean meal quality and the like of the existing production method of soybean meal products. The preparation method comprises the following steps: (1) screening impurities; (2) selecting raw materials in color; (3) drying; (4) breaking the petals and inactivating enzyme; (5) flash evaporation and degassing; (6) rolling and leaching; (7) vacuum desolventizing, wherein the steam enzyme deactivation treatment is specifically that the bean cotyledon is heated to 85-90 ℃ in a steam enzyme deactivation device, and then treated in an enzyme deactivation tank for 2-15 min. The soybean meal prepared by the production device and the preparation method thereof provided by the invention has the characteristics of low beany flavor and the like. The method can be applied to the preparation of the low-beany-flavor defatted soybean meal.)

1. The preparation method of the low-temperature defatted soybean meal with low beany flavor is characterized by comprising the following steps:

screening impurities: screening impurities of the soybean raw material;

selecting raw materials in color: carrying out color sorting treatment on the soybean raw material subjected to impurity screening treatment by using a color sorter so as to remove mildewed grains and obtain bean grains subjected to color sorting;

and (3) drying: drying the bean grains after color sorting, and adjusting the water content to 6-11% to obtain dried bean grains;

and (3) breaking petals and inactivating enzyme: carrying out a bean-breaking treatment on the dried bean particles by using a bean-breaking mill to obtain bean pieces and bean curd skin, and carrying out steam enzyme deactivation treatment on the bean pieces for 2-15min at the temperature of 85-90 ℃;

flash evaporation and degassing: carrying out flash evaporation degassing treatment on the bean cotyledon after enzyme deactivation by using a flash evaporation degassing device to remove beany flavor;

rolling and leaching: rolling the flash-evaporated and degassed bean cotyledon to obtain bean flakes, and sequentially performing organic solvent extraction and hot air drying on the bean flakes to obtain dried bean flakes;

vacuum desolventizing: and carrying out vacuum desolventizing treatment twice on the dried bean flakes to obtain the low-temperature defatted bean pulp with low beany flavor.

2. The method for preparing the low-temperature defatted soybean meal with low beany flavor according to claim 1, wherein in the step of petal breaking and enzyme deactivation, the gas phase of petal breaking is any one of nitrogen, carbon dioxide or argon, and in the step of flash evaporation degassing, the vacuum degree of flash evaporation degassing treatment is 60-70Kpa, and the temperature is 70-82 ℃.

3. The method for preparing the low-temperature defatted soybean meal with low beany flavor according to claim 1, wherein the steam enzyme deactivation treatment is specifically that the bean segments are heated to 85-90 ℃ in a steam enzyme deactivation device and then treated in an enzyme deactivation tank for 2-15 min;

the thickness of the bean chips is 0.3-0.7mm, the temperature of hot air drying treatment is 100-110 ℃, and the vacuum degree of the two vacuum desolventizing treatments is 6-7 Kpa.

4. A device for producing low-temperature defatted soybean meal with low beany flavor is characterized by comprising screening and color sorting devices which are sequentially arranged and used for removing impurities and mildewed grains in a soybean raw material;

the drying tower is communicated with a discharge hole of the screening and color selecting device;

the valve breaking mill is communicated with a discharge hole of the drying tower through an air seal machine;

the cyclone separation device is communicated with the discharge port of the segment breaking mill;

the steam enzyme-killing device is communicated with the discharge hole of the cyclone separation device;

the flash evaporation degassing device is communicated with a discharge hole of the steam enzyme deactivation device;

the rolling device is communicated with a discharge hole of the flash degassing device;

the leaching and drying device is communicated with a discharge port of the rolling device;

and the vacuum desolventizing device is communicated with a discharge hole of the leaching and drying device.

5. The apparatus for producing low-temperature defatted soybean meal with low beany flavor according to claim 4, wherein the screening and color separation apparatus further comprises a gravity screen and a color separator, wherein a gravity screen feeding port and a gravity screen discharging port are respectively formed at two ends of the gravity screen, a color separator feeding port and a color separator discharging port are respectively formed at two ends of the color separator, the gravity screen feeding port is connected with the conveying apparatus, and the gravity screen discharging port is communicated with the color separator feeding port.

6. The device for producing the low-temperature defatted soybean meal with low beany flavor according to claim 4, wherein a drying tower feeding port and a drying tower discharging port are respectively arranged at two sides of a drying tower body, a drying tower air outlet and a drying tower air inlet are respectively arranged at the top and the bottom of the drying tower, an induced draft fan is arranged at the drying tower air outlet, a heat exchanger is arranged at the drying tower air inlet, and the heat exchanger is communicated with an air blower;

and the feed inlet of the drying tower is communicated with the discharge outlet of the color selector.

7. The device for producing the low-temperature defatted soybean meal with low beany flavor according to claim 4, wherein the two ends of the segment breaking mill are respectively provided with a segment breaking mill feeding port and a segment breaking mill discharging port, and the top of the segment breaking mill is provided with a segment breaking mill air inlet;

the cyclone separation device is a cyclone separator, one side of a cone of the cyclone separator is provided with an inlet of the cyclone separation device, and the top and the bottom of the cone are respectively provided with an air outlet of the cyclone separation device and a discharge outlet of the cyclone separation device.

8. The apparatus for producing the low-temperature defatted soybean meal with low beany flavor according to claim 7, wherein a gas dehydration device is further arranged between the petal breaking mill and the cyclone separator, and the gas dehydration device further comprises a gas-liquid separator, a gas preparation device communicated with a gas outlet of the gas-liquid separator and a gas storage tank communicated with a gas outlet of the gas preparation device;

the gas-liquid separator is communicated with an air outlet of the cyclone separation device through an induced draft fan, the gas storage tank is communicated with an air inlet of the segment breaking mill through a gas conveying pipeline, and a check valve is installed on the gas conveying pipeline.

9. The apparatus for producing low-temperature defatted soybean meal with low beany flavor according to claim 4, wherein the steam enzyme deactivation apparatus further comprises a steam enzyme deactivation device and an enzyme deactivation tank, a steam enzyme deactivation device feeding port and a steam enzyme deactivation device discharging port are formed at two ends of the steam enzyme deactivation device, an enzyme deactivation tank feeding port and an enzyme deactivation tank discharging port are respectively formed at the top and the bottom of the enzyme deactivation tank body, the steam enzyme deactivation device feeding port is communicated with the cyclone separation device discharging port, and the steam enzyme deactivation device discharging port is communicated with the enzyme deactivation tank feeding port.

10. The apparatus for producing the low-temperature defatted soybean meal with low beany flavor according to claim 4, wherein the flash degassing apparatus further comprises a flash degassing tank and a vacuum pump connected with the flash degassing tank, the top and the bottom of the flash degassing tank are respectively provided with a flash degassing apparatus feeding port and a flash degassing apparatus discharging port, and the flash degassing apparatus feeding port is communicated with an enzyme deactivation tank discharging port;

the rolling device is a hydraulic rolling machine, and a hydraulic device feeding hole and a hydraulic device discharging hole are respectively formed in two ends of the hydraulic device;

the leaching and drying device further comprises a leaching device and a dryer, wherein a leaching device inlet and a leaching device outlet are respectively formed at two ends of the leaching device, a discharge port of the hydraulic device is communicated with the leaching device inlet, a dryer feed port and a dryer discharge port are respectively formed at two ends of a dryer cone, and the leaching device outlet is communicated with the dryer feed port;

the vacuum desolventizing device further comprises a first vacuum desolventizing device and a second vacuum desolventizing device, the first vacuum desolventizing device is communicated with a discharge hole of the dryer, and the first vacuum desolventizing device and the second vacuum desolventizing device are respectively connected with a first vacuum fan and a second vacuum fan.

Technical Field

The invention belongs to the technical field of deep processing of soybeans, and relates to a production device of soybean meal and a preparation method thereof, in particular to a production device of low-temperature defatted soybean meal with low beany flavor and a preparation method thereof.

Background

With the continuous progress of the production and development technology of the isolated soy protein, the application field of the isolated soy protein is wider and wider, in particular to meat products, vegetarian and solid beverage products which take the isolated soy protein as a main ingredient. The excellent properties of the isolated soy protein provide dual guarantees of functionality and nutrition and health care for the development of the foods, and simultaneously provide higher requirements for indexes of various layers of the isolated soy protein, the raw material for preparing the isolated soy protein is soy, the soy has inherent flavor substances, and the beany flavor becomes an important bottleneck for restricting the development of the isolated soy protein, so that the development of the low-beany flavor soybean meal for promoting the low-beany flavor isolated soy protein product to play an important role in the development of the soybean foods in China is realized, but the existing preparation method of the soybean meal cannot completely solve the technical problem of beany flavor of the soybean meal product.

Therefore, how to prepare a low-beany flavor soybean meal product by optimizing the process and other measures is an important research topic for the technicians in the field.

Disclosure of Invention

The invention provides a production device of low-temperature defatted soybean meal with low beany flavor and a preparation method thereof, aiming at the technical problems of serious beany flavor, low soybean meal quality and the like of the existing production method of soybean meal products.

In order to achieve the purpose, the invention adopts the technical scheme that:

a preparation method of low-temperature defatted soybean meal with low beany flavor comprises the following steps:

screening impurities: screening impurities of the soybean raw material;

selecting raw materials in color: carrying out color sorting treatment on the soybean raw material subjected to impurity screening treatment by using a color sorter so as to remove mildewed grains and obtain bean grains subjected to color sorting;

and (3) drying: drying the bean grains after color sorting, and adjusting the water content to 6-11% to obtain dried bean grains;

and (3) breaking petals and inactivating enzyme: carrying out petal breaking treatment on the dried bean particles by using a petal breaking mill to obtain bean petals and bean curd skin, and carrying out steam enzyme deactivation treatment on the bean petals at 85-90 ℃ for 2-15 min;

flash evaporation and degassing: carrying out flash evaporation degassing treatment on the bean cotyledon after enzyme deactivation by using a flash evaporation degassing device to remove beany flavor;

rolling and leaching: rolling the flash-evaporated and degassed bean cotyledon to obtain bean flakes, and sequentially performing organic solvent extraction and hot air drying on the bean flakes to obtain dried bean flakes;

vacuum desolventizing: and carrying out vacuum desolventizing treatment twice on the dried bean flakes to obtain the low-temperature defatted bean pulp with low beany flavor.

Preferably, in the step of valve breaking and enzyme deactivation, the gas phase of the valve breaking mill is any one of nitrogen, carbon dioxide or argon, and in the step of flash degassing, the vacuum degree of flash degassing treatment is 60-70Kpa, and the temperature is 70-82 ℃.

Preferably, the steam enzyme deactivation treatment is to heat bean cotyledon to 85-90 deg.C in a steam enzyme deactivation device, and then treat bean cotyledon in enzyme deactivation tank for 2-15 min;

the thickness of the bean chips is 0.3-0.7mm, the temperature of hot air drying treatment is 100-110 ℃, and the vacuum degree of the two vacuum desolventizing treatments is 6-7 Kpa.

The invention also provides a device for producing the low-temperature defatted soybean meal with low beany flavor, which comprises a screening and color sorting device which are sequentially arranged and used for removing impurities and mildewed grains in the soybean raw material;

the drying tower is communicated with a discharge hole of the screening and color selecting device;

the valve breaking mill is communicated with a discharge hole of the drying tower through an air seal machine;

the cyclone separation device is communicated with the discharge port of the segment breaking mill;

the steam enzyme-killing device is communicated with the discharge hole of the cyclone separation device;

the flash evaporation degassing device is communicated with a discharge hole of the steam enzyme deactivation device;

the rolling device is communicated with a discharge hole of the flash degassing device;

the leaching and drying device is communicated with a discharge port of the rolling device;

and the vacuum desolventizing device is communicated with a discharge hole of the leaching and drying device.

Preferably, the screening and color separation device further comprises a gravity screen and a color separator, wherein a gravity screen feeding port and a gravity screen discharging port are formed in two ends of the gravity screen respectively, a color separator feeding port and a color separator discharging port are formed in two ends of the color separator respectively, the gravity screen feeding port is connected with the conveying device, and the gravity screen discharging port is communicated with the color separator feeding port.

Preferably, a drying tower feeding hole and a drying tower discharging hole are respectively formed in two sides of the drying tower body, a drying tower air outlet and a drying tower air inlet are respectively formed in the tower top and the tower bottom, an induced draft fan is installed at the drying tower air outlet, a heat exchanger is installed at the drying tower air inlet, and the heat exchanger is communicated with an air blower;

and the feed inlet of the drying tower is communicated with the discharge outlet of the color selector.

Preferably, a feeding port and a discharging port of the segment breaking mill are respectively arranged at two ends of the segment breaking mill, and an air inlet of the segment breaking mill is arranged at the top of the segment breaking mill;

the cyclone separation device is a cyclone separator, one side of a cone of the cyclone separator is provided with an inlet of the cyclone separation device, and the top and the bottom of the cone are respectively provided with an air outlet of the cyclone separation device and a discharge outlet of the cyclone separation device.

Preferably, a gas dehydration device is further arranged between the valve breaking mill and the cyclone separator, and the gas dehydration device further comprises a gas-liquid separator, a gas preparation device communicated with a gas outlet of the gas-liquid separator and a gas storage tank communicated with a gas outlet of the gas preparation device;

the gas-liquid separator is communicated with an air outlet of the cyclone separation device through an induced draft fan, the gas storage tank is communicated with an air inlet of the segment breaking mill through a gas conveying pipeline, and a check valve is installed on the gas conveying pipeline.

Preferably, the steam enzyme deactivation device further comprises a steam enzyme deactivation device and an enzyme deactivation tank, a steam enzyme deactivation device feeding port and a steam enzyme deactivation device discharging port are formed in two ends of the steam enzyme deactivation device, an enzyme deactivation tank feeding port and an enzyme deactivation tank discharging port are formed in the top and the bottom of a tank body of the enzyme deactivation tank respectively, the steam enzyme deactivation device feeding port is communicated with the cyclone separation device discharging port, and the steam enzyme deactivation device discharging port is communicated with the enzyme deactivation tank feeding port.

Preferably, the flash degassing device further comprises a flash degassing tank and a vacuum pump connected with the flash degassing tank, wherein the top and the bottom of the flash degassing tank are respectively provided with a flash degassing device feeding port and a flash degassing device discharging port, and the flash degassing device feeding port is communicated with an enzyme deactivation tank discharging port;

the rolling device is a hydraulic rolling machine, and a hydraulic device feeding hole and a hydraulic device discharging hole are respectively formed in two ends of the hydraulic device;

the leaching and drying device further comprises a leaching device and a dryer, wherein a leaching device inlet and a leaching device outlet are respectively formed at two ends of the leaching device, a discharge port of the hydraulic device is communicated with the leaching device inlet, a dryer feed port and a dryer discharge port are respectively formed at two ends of a dryer cone, and the leaching device outlet is communicated with the dryer feed port;

the vacuum desolventizing device further comprises a first vacuum desolventizing device and a second vacuum desolventizing device, the first vacuum desolventizing device is communicated with a discharge hole of the dryer, and the first vacuum desolventizing device and the second vacuum desolventizing device are respectively connected with a first vacuum fan and a second vacuum fan.

Compared with the prior art, the invention has the advantages and positive effects that:

1. the invention provides a preparation method of low-temperature defatted soybean meal with low beany flavor, which comprises the following steps of sequentially carrying out impurity screening, raw material color selection, drying, petal breaking and enzyme inactivation, flash degassing, rolling, leaching, vacuum desolventizing and the like on a soybean raw material, and finally preparing the ideal low-temperature defatted soybean meal with low beany flavor;

2. the invention mainly improves the following steps in order to solve the problem of heavy beany flavor in the existing bean pulp preparation process: on one hand, the oxidation of lipoxidase in the soybeans is prevented by isolating oxygen by using inert gas in the process of splitting the segments, so that the generation of beany flavor substances in the production process of bean pulp is reduced; on the other hand, the soybean raw material is subjected to flash evaporation degassing treatment by using a flash evaporation degassing device, the boiling point of volatile organic matters is reduced by using vacuum, the volatile organic matters are removed, and the purpose of reducing the beany flavor of the soybean meal is achieved;

3. the invention also provides a complete device for producing the low-temperature defatted soybean meal with low beany flavor, which integrates impurity screening, color sorting, drying, flap breaking and enzyme deactivation, flash degassing, rolling, leaching and vacuum desolventizing devices, and has the advantages of simple and convenient assembly, high automation degree, low beany flavor of the soybean meal prepared by the device and excellent quality.

Drawings

Fig. 1 is a schematic diagram of an apparatus for producing low-temperature defatted soybean meal with low beany flavor according to an embodiment of the present invention;

FIG. 2 is an enlarged view of a portion of a drying tower provided in accordance with an embodiment of the present invention;

fig. 3 is a partially enlarged view of the valve-breaking mill, the gas dehydration device and the cyclone separator provided by the embodiment of the invention.

In the above figures: 1. a specific gravity sieve; 2. a color selector; 3. a drying tower; 4. grinding the broken petals; 5. a cyclone separator; 6. a gas dehydration unit; 7. a steam enzyme killer; 8. an enzyme deactivation tank; 9. a flash evaporation degassing tank; 10. a vacuum pump; 11. a feed port of a gravity screen; 12. a specific gravity sieve discharge port; 13. a rolling device; 14. an extractor; 15. a dryer; 16. a first vacuum desolventizer; 17. a second vacuum desolventizer; 21. a feed inlet of the color sorter; 22. a discharge hole of the color selector; 31. a feed inlet of the drying tower; 32. a discharge hole of the drying tower; 33. an air outlet of the drying tower; 34. an air inlet of the drying tower; 35. an induced draft fan; 36. a heat exchanger; 37. a blower; 41. a feed port is ground by a segment breaking mill; 42. a discharging port of the segment breaking mill; 43. a valve is broken and an air inlet is ground; 51. an inlet of a cyclone separation device; 52. an air outlet of the cyclone separation device; 53. a discharge port of the cyclone separation device; 61. a gas-liquid separator; 62. a gas preparation device; 63. a gas storage tank; 64. a check valve; 71. a feed inlet of the steam enzyme killer; 72. a discharge hole of the steam enzyme killer; 81. a feed inlet of the enzyme deactivation tank; 82. a discharge hole of the enzyme deactivation tank; 91. a feed inlet of a flash degassing device; 92. a discharge port of the flash degassing device; 131. a feed port of the hydraulic device; 132. a discharge port of the hydraulic device; 141. an inlet of the extractor; 142. an outlet of the extractor; 151. a dryer feed inlet; 152. a discharge port of the dryer; 161. a first vacuum blower; 171. a second vacuum blower.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The embodiment of the invention provides a preparation method of low-temperature defatted soybean meal with low beany flavor, which comprises the following steps:

s1, screening impurities: screening impurities of the soybean raw material;

s2, selecting raw materials in color: carrying out color sorting treatment on the soybean raw material subjected to impurity screening treatment by using a color sorter 2 to remove mildewed grains and obtain bean grains subjected to color sorting;

s3, drying: drying the bean grains after color sorting, and adjusting the water content to 6-11% to obtain dried bean grains;

s4, flap breaking and enzyme killing: carrying out petal breaking treatment on the dried bean particles by using a petal breaking mill 4 to obtain bean petals and bean curd skin, and carrying out steam enzyme deactivation treatment on the bean petals at 85-90 ℃ for 2-15 min;

s5, flash degassing: carrying out flash evaporation degassing treatment on the bean cotyledon after enzyme deactivation by using a flash evaporation degassing device to remove beany flavor;

s6, rolling and leaching: rolling the flash-evaporated and degassed bean cotyledon to obtain bean flakes, and sequentially performing organic solvent extraction and hot air drying on the bean flakes to obtain dried bean flakes;

s7, vacuum desolventizing: and carrying out vacuum desolventizing treatment twice on the dried bean flakes to obtain the low-temperature defatted bean pulp with low beany flavor.

In a preferred embodiment, in the flap breaking and enzyme inactivating step, the gas phase of the flap breaking mill 4 is any one of nitrogen, carbon dioxide or argon, and in the flash degassing step, the vacuum degree of the flash degassing treatment is 60-70Kpa, and the temperature is 70-82 ℃.

In a preferred embodiment, the steam enzyme deactivation treatment is specifically that the bean cotyledons are heated to 85-90 ℃ in a steam enzyme deactivation device 7, and then treated in an enzyme deactivation tank 8 for 2-15 min;

the thickness of the bean chips is 0.3-0.7mm, the temperature of hot air drying treatment is 100-110 ℃, and the vacuum degree of the two vacuum desolventizing treatments is 6-7 Kpa.

The invention also provides a device for producing the low-temperature defatted soybean meal with low beany flavor, which comprises a screening and color sorting device which are sequentially arranged and used for removing impurities and mildewed grains in the soybean raw material;

the drying tower 3 is communicated with a discharge hole of the screening and color selecting device;

the valve breaking mill 4 is communicated with a discharge hole 32 of the drying tower through an air seal machine;

the cyclone separation device is communicated with the valve breaking mill discharge port 42;

the steam enzyme-killing device is communicated with a discharge hole 53 of the cyclone separation device;

the flash evaporation degassing device is communicated with a discharge hole of the steam enzyme deactivation device;

the rolling device 13 is communicated with a discharge port 92 of the flash degassing device;

the leaching and drying device is communicated with a discharge port 132 of the rolling device;

and the vacuum desolventizing device is communicated with a discharge hole of the leaching and drying device.

In a preferred embodiment, the screening and color selection device further comprises a gravity screen 1 and a color selector 2, wherein a gravity screen inlet 11 and a gravity screen outlet 12 are respectively formed at two ends of the gravity screen 1, a color selector inlet 21 and a color selector outlet 22 are respectively formed at two ends of the color selector 2, the gravity screen inlet 11 is connected with the conveying device, and the gravity screen outlet 12 is communicated with the color selector inlet 21.

In a preferred embodiment, a drying tower inlet 31 and a drying tower outlet 32 are respectively formed in two sides of a tower body of the drying tower 3, a drying tower outlet 33 and a drying tower inlet 34 are respectively formed in the tower top and the tower bottom, an induced draft fan 35 is installed at the drying tower outlet 33, a heat exchanger 36 is installed at the drying tower inlet 34, and the heat exchanger 36 is communicated with an air blower 37;

the feed inlet 31 of the drying tower is communicated with the discharge outlet 22 of the color selector.

In a preferred embodiment, both ends of the segment grinding mill 4 are respectively provided with a segment grinding feed port 41 and a segment grinding discharge port 42, and the top of the segment grinding mill 4 is provided with a segment grinding air inlet 43;

the cyclone separation device is a cyclone separator 5, one side of a cone of the cyclone separator 5 is provided with a cyclone separation device inlet 51, and the top and the bottom of the cone are respectively provided with a cyclone separation device air outlet 52 and a cyclone separation device discharge hole 53.

In a preferred embodiment, a gas dehydration device 6 is further arranged between the flap mill 4 and the cyclone separator 5, and the gas dehydration device 6 further comprises a gas-liquid separator 61, a gas preparation device 62 communicated with the gas outlet of the gas-liquid separator 61 and a gas storage tank 63 communicated with the gas outlet of the gas preparation device 62;

the gas-liquid separator 61 is communicated with the air outlet 52 of the cyclone separation device through the induced draft fan 35, the gas storage tank 63 is communicated with the valve breaking grinding air inlet 43 through a gas conveying pipeline, and the check valve 64 is arranged on the gas conveying pipeline.

In a preferred embodiment, the steam enzyme deactivation device further comprises a steam enzyme deactivation device 7 and an enzyme deactivation tank 8, wherein two ends of the steam enzyme deactivation device 7 are provided with a steam enzyme deactivation device feeding port 71 and a steam enzyme deactivation device discharging port 72, the top and the bottom of the tank body of the enzyme deactivation tank 8 are respectively provided with an enzyme deactivation tank feeding port 81 and an enzyme deactivation tank discharging port 82, the steam enzyme deactivation device feeding port 71 is communicated with the cyclone separation device discharging port 53, and the steam enzyme deactivation device discharging port 72 is communicated with the enzyme deactivation tank feeding port 81.

In a preferred embodiment, the flash degassing device further comprises a flash degassing tank 9 and a vacuum pump 10 connected with the flash degassing tank 9, wherein the top and the bottom of the flash degassing tank 9 are respectively provided with a flash degassing device feed port 91 and a flash degassing device discharge port 92, and the flash degassing device feed port 91 is communicated with the enzyme deactivation tank discharge port 82;

the rolling device 13 is a hydraulic rolling machine, and both ends of the hydraulic device 13 are respectively provided with a hydraulic device feeding port 131 and a hydraulic device discharging port 132;

the leaching and drying device further comprises a leaching device 14 and a dryer 15, wherein two ends of the leaching device 14 are respectively provided with a leaching device inlet 141 and a leaching device outlet 142, a hydraulic device discharge port 132 is communicated with the leaching device inlet 141, two ends of a cone of the dryer 15 are respectively provided with a dryer feed port 151 and a dryer discharge port 152, and the leaching device outlet 142 is communicated with the dryer feed port 151;

the vacuum desolventizing device further comprises a first vacuum desolventizing device 16 and a second vacuum desolventizing device 17, the first vacuum desolventizing device 16 is communicated with a discharge hole 152 of the dryer, and the first vacuum desolventizing device 16 and the second vacuum desolventizing device 17 are respectively connected with a first vacuum fan 161 and a second vacuum fan 171.

In order to more clearly and specifically describe the apparatus for producing low-temperature defatted soybean meal with low beany flavor and the preparation method thereof according to the embodiments of the present invention, the following description will be made with reference to specific embodiments.

Comparative example 1

The comparative example provides a preparation process of conventional low-temperature soybean meal, which specifically comprises the following steps:

(1) screening impurities such as cobblestone, legume weeds and the like in the soybean raw material in a specific gravity screen to obtain the screened soybean raw material;

(2) carrying out color sorting treatment on the soybean raw material subjected to impurity screening treatment by using a color sorter to remove mildewed grains and color-changed grains;

(3) the bean grains after color sorting enter a drying tower, hot air heated by a heat exchanger enters the drying tower through an air inlet of the drying tower by an air blower, the moisture of the soybeans is adjusted to be 8%, the dried air passes through an air duct outlet and is discharged from the drying tower by an induced draft fan, and the dried soybeans are discharged out of a system through the outlet of the drying tower and enter a petal breaking system;

(4) dry bean particles enter a broken bean system, bean cotyledons and bean skins after the bean cotyledons are broken grind an outlet from the broken bean system and then enter a cyclone separator through an inlet of the cyclone separator, the bean cotyledons enter a steam enzyme deactivation system through an air seal machine to perform steam enzyme deactivation treatment, and the specific treatment conditions are as follows: performing steam enzyme deactivation treatment on 30 min at 85 ℃;

(5) the bean cotyledon after enzyme deactivation enters a softening system and is softened at 82 ℃;

(6) the softened bean cotyledon enters a hydraulic roller press for rolling, and the thickness of the bean flakes is controlled to be 0.6 mm;

(7) feeding the pressed bean chips into a horizontal rotation type extractor, extracting by using an organic solvent to obtain mixed oil, recovering the mixed oil, feeding the mixed oil into a vegetable oil extraction system, feeding the degreased bean pulp into a medium steam heating device, heating at 160 ℃, and drying by hot air at 120 ℃;

(8) and (3) putting the dried soybean meal into a vacuum desolventizing device, performing vacuum desolventizing by using a vacuum fan, recovering the solvent, controlling the vacuum degree to be 5kpa, after the soybean meal is removed once, performing vacuum desolventizing by using the vacuum fan in the vacuum desolventizing device, recovering the solvent, and controlling the vacuum degree to be 5kpa to prepare the low-temperature soybean meal.

Example 1

The embodiment provides a method for producing soybean meal by using a low-temperature defatted soybean meal production device with low beany flavor, which specifically comprises the following steps:

(1) screening impurities: the soybean raw material enters a specific gravity sieve 1 through a specific gravity sieve feeding port 11, impurities such as cobblestones, legume weeds and the like are sieved, and the sieved soybean raw material is discharged out of the specific gravity sieve 1 through a specific gravity sieve discharging port 12;

(2) selecting raw materials in color: the soybean raw material after the impurity screening treatment enters a color sorter 2 through a feed inlet 21 of the color sorter for color sorting treatment, mildewed grains are removed, and the soybean grains after the color sorting exit from the color sorter 2 through a discharge outlet 22 of the color sorter;

(3) and (3) drying: the bean granules after color sorting enter a drying tower 3 through a drying tower feeding hole 31, hot air heated by a heat exchanger 35 enters the drying tower 3 through a drying tower air inlet 34 through an air blower 36, the moisture of the soybean raw material is regulated to 11%, the air after drying treatment is discharged from a drying tower air outlet 33 through an induced draft fan 35, and the dried bean granules are discharged out of the drying tower 3 through a drying tower discharging hole 32;

(4) and (3) breaking petals and inactivating enzyme: dried bean particles enter a broken bean mill 4 through a broken bean mill feeding port 41, the gas phase of the broken bean mill 4 is nitrogen, the dried bean particles are broken in the broken bean mill 4 to obtain bean skin and bean cotyledon, the bean cotyledon is discharged from the broken bean mill 4 through a broken bean mill discharging port 42, and then enters a cyclone separator 5 through a cyclone separator inlet 51;

the nitrogen enters the valve breaking mill 4, then enters the cyclone separator 5 through the inlet 51 of the cyclone separation device, is discharged from the air outlet 52 of the cyclone separation device through the induced draft fan 35, and sequentially enters the gas-liquid separator 61 for dehydration treatment, the dehydrated nitrogen recovers the nitrogen through the gas preparation device 62, the recovered nitrogen enters the gas storage tank 63 for storage and recycling, and the nitrogen enters the valve breaking mill 4 through the check valve 64 during use;

bean petals enter a steam enzyme-killing device 7 through a discharge hole 53 of a cyclone separation device, the temperature of the bean petals is quickly raised to 90 ℃ in the steam enzyme-killing device 7, then 15min is maintained in an enzyme-killing tank 8, and condensed water generated in the steam process is discharged by a steam trap connected to the steam enzyme-killing device 7;

(5) flash evaporation and degassing: the bean cotyledon after enzyme deactivation enters a flash evaporation degassing tank 9 through a feed inlet 91 of a flash evaporation degassing device, the vacuum degree in the flash evaporation degassing tank 9 is controlled at 70Kpa by using a vacuum pump 10, and the temperature is controlled at 82 ℃;

(6) rolling and leaching: the bean paste after flash evaporation degassing treatment enters a hydraulic roller press for rolling, the thickness of the bean flakes is controlled to be 0.7mm, the bean flakes enter a flat-turn type extractor through an extractor inlet 141, are extracted by using an organic solvent and then enter a dryer 15 for drying treatment at the temperature of 110 ℃;

(7) vacuum desolventizing: and (3) putting the dried bean slices into a first vacuum desolventizing device 16, performing vacuum desolventizing by using a first vacuum fan 161, controlling the vacuum degree to be 6Kpa, recovering the solvent, then putting the dried bean slices into a second vacuum desolventizing device 17 for desolventizing again, controlling the vacuum degree to be 6Kpa, recovering the solvent, and performing desolventizing twice to obtain the low-temperature defatted bean pulp with low beany flavor.

Example 2

The embodiment provides a method for producing soybean meal by using a low-temperature defatted soybean meal production device with low beany flavor, which specifically comprises the following steps:

(1) screening impurities: the soybean raw material enters a specific gravity sieve 1 through a specific gravity sieve feeding port 11, impurities such as cobblestones, legume weeds and the like are sieved, and the sieved soybean raw material is discharged out of the specific gravity sieve 1 through a specific gravity sieve discharging port 12;

(2) selecting raw materials in color: the soybean raw material after the impurity screening treatment enters a color sorter 2 through a feed inlet 21 of the color sorter for color sorting treatment, mildewed grains are removed, and the soybean grains after the color sorting exit from the color sorter 2 through a discharge outlet 22 of the color sorter;

(3) and (3) drying: the bean granules after color sorting enter a drying tower 3 through a drying tower feeding hole 31, hot air heated by a heat exchanger 35 enters the drying tower 3 through a drying tower air inlet 34 through an air blower 36, the moisture of the soybean raw material is regulated to 9%, the air after drying treatment is discharged from a drying tower air outlet 33 through an induced draft fan 35, and the dried bean granules are discharged out of the drying tower 3 through a drying tower discharging hole 32;

(4) and (3) breaking petals and inactivating enzyme: dried bean particles enter a broken bean mill 4 through a broken bean mill feeding port 41, the gas phase of the broken bean mill 4 is nitrogen, the dried bean particles are broken in the broken bean mill 4 to obtain bean skin and bean cotyledon, the bean cotyledon is discharged from the broken bean mill 4 through a broken bean mill discharging port 42, and then enters a cyclone separator 5 through a cyclone separator inlet 51;

the nitrogen enters the valve breaking mill 4, then enters the cyclone separator 5 through the inlet 51 of the cyclone separation device, is discharged from the air outlet 52 of the cyclone separation device through the induced draft fan 35, and sequentially enters the gas-liquid separator 61 for dehydration treatment, the dehydrated nitrogen recovers the nitrogen through the gas preparation device 62, the recovered nitrogen enters the gas storage tank 63 for storage and recycling, and the nitrogen enters the valve breaking mill 4 through the check valve 64 during use;

bean petals enter a steam enzyme-killing device 7 through a discharge hole 53 of a cyclone separation device, the temperature of the bean petals is quickly raised to 88 ℃ in the steam enzyme-killing device 7, then 5min is maintained in an enzyme-killing tank 8, and condensed water generated in the steam process is discharged by a steam trap connected to the steam enzyme-killing device 7;

(5) flash evaporation and degassing: the bean cotyledon after enzyme deactivation enters a flash evaporation degassing tank 9 through a feed inlet 91 of a flash evaporation degassing device, the vacuum degree in the flash evaporation degassing tank 9 is controlled at 65Kpa by using a vacuum pump 10, and the temperature is controlled at 73 ℃;

(6) rolling and leaching: the bean paste after flash evaporation degassing treatment enters a hydraulic roller press for rolling, the thickness of the bean flakes is controlled to be 0.5mm, the bean flakes enter a flat-turn type extractor through an extractor inlet 141, are extracted by using an organic solvent and then enter a dryer 15 for drying treatment at 105 ℃;

(7) vacuum desolventizing: and (3) putting the dried bean slices into a first vacuum desolventizing device 16, performing vacuum desolventizing by using a first vacuum fan 161, controlling the vacuum degree to be 7Kpa, recovering the solvent, then putting the dried bean slices into a second vacuum desolventizing device 17 for desolventizing again, controlling the vacuum degree to be 7Kpa, recovering the solvent, and performing desolventizing twice to obtain the low-temperature defatted bean pulp with low beany flavor.

Example 3

The embodiment provides a method for producing soybean meal by using a low-temperature defatted soybean meal production device with low beany flavor, which specifically comprises the following steps:

(1) screening impurities: the soybean raw material enters a specific gravity sieve 1 through a specific gravity sieve feeding port 11, impurities such as cobblestones, legume weeds and the like are sieved, and the sieved soybean raw material is discharged out of the specific gravity sieve 1 through a specific gravity sieve discharging port 12;

(2) selecting raw materials in color: the soybean raw material after the impurity screening treatment enters a color sorter 2 through a feed inlet 21 of the color sorter for color sorting treatment, mildewed grains are removed, and the soybean grains after the color sorting exit from the color sorter 2 through a discharge outlet 22 of the color sorter;

(3) and (3) drying: the bean granules after color sorting enter a drying tower 3 through a drying tower feeding hole 31, hot air heated by a heat exchanger 35 enters the drying tower 3 through a drying tower air inlet 34 through an air blower 36, the moisture of the soybean raw material is regulated to 9%, the air after drying treatment is discharged from a drying tower air outlet 33 through an induced draft fan 35, and the dried bean granules are discharged out of the drying tower 3 through a drying tower discharging hole 32;

(4) and (3) breaking petals and inactivating enzyme: dried bean particles enter a broken bean mill 4 through a broken bean mill feeding port 41, the gas phase of the broken bean mill 4 is nitrogen, the dried bean particles are broken in the broken bean mill 4 to obtain bean skin and bean cotyledon, the bean cotyledon is discharged from the broken bean mill 4 through a broken bean mill discharging port 42, and then enters a cyclone separator 5 through a cyclone separator inlet 51;

the nitrogen enters the valve breaking mill 4, then enters the cyclone separator 5 through the inlet 51 of the cyclone separation device, is discharged from the air outlet 52 of the cyclone separation device through the induced draft fan 35, and sequentially enters the gas-liquid separator 61 for dehydration treatment, the dehydrated nitrogen recovers the nitrogen through the gas preparation device 62, the recovered nitrogen enters the gas storage tank 63 for storage and recycling, and the nitrogen enters the valve breaking mill 4 through the check valve 64 during use;

bean petals enter a steam enzyme killing device 7 through a discharge hole 53 of a cyclone separation device, the temperature of the bean petals is quickly raised to 87 ℃ in the steam enzyme killing device 7, then 7 min is maintained in an enzyme killing tank 8, and condensed water generated in the steam process is discharged by a steam trap connected to the steam enzyme killing device 7;

(5) flash evaporation and degassing: the bean cotyledon after enzyme deactivation enters a flash evaporation degassing tank 9 through a feed inlet 91 of a flash evaporation degassing device, the vacuum degree in the flash evaporation degassing tank 9 is controlled at 60Kpa by using a vacuum pump 10, and the temperature is controlled at 81 ℃;

(6) rolling and leaching: the bean paste after flash evaporation degassing treatment enters a hydraulic roller press for rolling, the thickness of the bean flakes is controlled to be 0.4mm, the bean flakes enter a flat-turn type extractor through an extractor inlet 141, are extracted by using an organic solvent and then enter a dryer 15 for drying treatment at 108 ℃;

(7) vacuum desolventizing: and (3) putting the dried bean slices into a first vacuum desolventizing device 16, performing vacuum desolventizing by using a first vacuum fan 161, controlling the vacuum degree to be 6Kpa, recovering the solvent, then putting the dried bean slices into a second vacuum desolventizing device 17 for desolventizing again, controlling the vacuum degree to be 6Kpa, recovering the solvent, and performing desolventizing twice to obtain the low-temperature defatted bean pulp with low beany flavor.

Example 4

The embodiment provides a method for producing soybean meal by using a low-temperature defatted soybean meal production device with low beany flavor, which specifically comprises the following steps:

(1) screening impurities: the soybean raw material enters a specific gravity sieve 1 through a specific gravity sieve feeding port 11, impurities such as cobblestones, legume weeds and the like are sieved, and the sieved soybean raw material is discharged out of the specific gravity sieve 1 through a specific gravity sieve discharging port 12;

(2) selecting raw materials in color: the soybean raw material after the impurity screening treatment enters a color sorter 2 through a feed inlet 21 of the color sorter for color sorting treatment, mildewed grains are removed, and the soybean grains after the color sorting exit from the color sorter 2 through a discharge outlet 22 of the color sorter;

(3) and (3) drying: the bean granules after color sorting enter a drying tower 3 through a drying tower feeding hole 31, hot air heated by a heat exchanger 35 enters the drying tower 3 through a drying tower air inlet 34 through an air blower 36, the moisture of the soybean raw material is regulated to be 6%, the air after drying treatment is discharged from a drying tower air outlet 33 through an induced draft fan 35, and the dried bean granules are discharged out of the drying tower 3 through a drying tower discharging hole 32;

(4) and (3) breaking petals and inactivating enzyme: dried bean particles enter a broken bean mill 4 through a broken bean mill feeding port 41, the gas phase of the broken bean mill 4 is nitrogen, the dried bean particles are broken in the broken bean mill 4 to obtain bean skin and bean cotyledon, the bean cotyledon is discharged from the broken bean mill 4 through a broken bean mill discharging port 42, and then enters a cyclone separator 5 through a cyclone separator inlet 51;

the nitrogen enters the valve breaking mill 4, then enters the cyclone separator 5 through the inlet 51 of the cyclone separation device, is discharged from the air outlet 52 of the cyclone separation device through the induced draft fan 35, and sequentially enters the gas-liquid separator 61 for dehydration treatment, the dehydrated nitrogen recovers the nitrogen through the gas preparation device 62, the recovered nitrogen enters the gas storage tank 63 for storage and recycling, and the nitrogen enters the valve breaking mill 4 through the check valve 64 during use;

bean petals enter a steam enzyme-killing device 7 through a discharge hole 53 of a cyclone separation device, the temperature of the bean petals is quickly raised to 85 ℃ in the steam enzyme-killing device 7, then 2 min is maintained in an enzyme-killing tank 8, and condensed water generated in the steam process is discharged by a steam trap connected to the steam enzyme-killing device 7;

(5) flash evaporation and degassing: the bean cotyledon after enzyme deactivation enters a flash evaporation degassing tank 9 through a feed inlet 91 of a flash evaporation degassing device, the vacuum degree in the flash evaporation degassing tank 9 is controlled at 60Kpa by using a vacuum pump 10, and the temperature is controlled at 70 ℃;

(6) rolling and leaching: the bean paste after flash evaporation degassing treatment enters a hydraulic roller press for rolling, the thickness of the bean flakes is controlled to be 0.3mm, the bean flakes enter a flat-turn type extractor through an extractor inlet 141, are extracted by using an organic solvent and then enter a dryer 15 for drying treatment at the temperature of 100 ℃;

(7) vacuum desolventizing: and (3) putting the dried bean slices into a first vacuum desolventizing device 16, performing vacuum desolventizing by using a first vacuum fan 161, controlling the vacuum degree to be 7Kpa, recovering the solvent, then putting the dried bean slices into a second vacuum desolventizing device 17 for desolventizing again, controlling the vacuum degree to be 6Kpa, recovering the solvent, and performing desolventizing twice to obtain the low-temperature defatted bean pulp with low beany flavor.

Example 5

The embodiment provides a method for producing soybean meal by using a low-temperature defatted soybean meal production device with low beany flavor, which specifically comprises the following steps:

(1) screening impurities: the soybean raw material enters a specific gravity sieve 1 through a specific gravity sieve feeding port 11, impurities such as cobblestones, legume weeds and the like are sieved, and the sieved soybean raw material is discharged out of the specific gravity sieve 1 through a specific gravity sieve discharging port 12;

(2) selecting raw materials in color: the soybean raw material after the impurity screening treatment enters a color sorter 2 through a feed inlet 21 of the color sorter for color sorting treatment, mildewed grains are removed, and the soybean grains after the color sorting exit from the color sorter 2 through a discharge outlet 22 of the color sorter;

(3) and (3) drying: the bean granules after color sorting enter a drying tower 3 through a drying tower feeding hole 31, hot air heated by a heat exchanger 35 enters the drying tower 3 through a drying tower air inlet 34 through an air blower 36, the moisture of the soybean raw material is regulated to be 6%, the air after drying treatment is discharged from a drying tower air outlet 33 through an induced draft fan 35, and the dried bean granules are discharged out of the drying tower 3 through a drying tower discharging hole 32;

(4) and (3) breaking petals and inactivating enzyme: dried bean particles enter a broken bean mill 4 through a broken bean mill feeding port 41, the gas phase of the broken bean mill 4 is nitrogen, the dried bean particles are broken in the broken bean mill 4 to obtain bean skin and bean cotyledon, the bean cotyledon is discharged from the broken bean mill 4 through a broken bean mill discharging port 42, and then enters a cyclone separator 5 through a cyclone separator inlet 51;

the nitrogen enters the valve breaking mill 4, then enters the cyclone separator 5 through the inlet 51 of the cyclone separation device, is discharged from the air outlet 52 of the cyclone separation device through the induced draft fan 35, and sequentially enters the gas-liquid separator 61 for dehydration treatment, the dehydrated nitrogen recovers the nitrogen through the gas preparation device 62, the recovered nitrogen enters the gas storage tank 63 for storage and recycling, and the nitrogen enters the valve breaking mill 4 through the check valve 64 during use;

bean petals enter a steam enzyme-killing device 7 through a discharge hole 53 of a cyclone separation device, the temperature of the bean petals is quickly raised to 90 ℃ in the steam enzyme-killing device 7, then 15min is maintained in an enzyme-killing tank 8, and condensed water generated in the steam process is discharged by a steam trap connected to the steam enzyme-killing device 7;

(5) flash evaporation and degassing: the bean cotyledon after enzyme deactivation enters a flash evaporation degassing tank 9 through a feed inlet 91 of a flash evaporation degassing device, the vacuum degree in the flash evaporation degassing tank 9 is controlled at 60Kpa by using a vacuum pump 10, and the temperature is controlled at 82 ℃;

(6) rolling and leaching: the bean paste after flash evaporation degassing treatment enters a hydraulic roller press for rolling, the thickness of the bean flakes is controlled to be 0.7mm, the bean flakes enter a flat-turn type extractor through an extractor inlet 141, are extracted by using an organic solvent and then enter a dryer 15 for drying treatment at the temperature of 110 ℃;

(7) vacuum desolventizing: and (3) putting the dried bean slices into a first vacuum desolventizing device 16, performing vacuum desolventizing by using a first vacuum fan 161, controlling the vacuum degree to be 7Kpa, recovering the solvent, then putting the dried bean slices into a second vacuum desolventizing device 17 for desolventizing again, controlling the vacuum degree to be 6Kpa, recovering the solvent, and performing desolventizing twice to obtain the low-temperature defatted bean pulp with low beany flavor.

Low-temperature evaluation of soybean meal quality

The invention also evaluates the nitrogen solubility index, moisture content and beany flavor of the soybean meal products prepared in the above examples and comparative examples, and the test results are shown in the following table:

table 1 evaluation results of soybean meal quality in examples and comparative examples

	Nitrogen solubility index NSI/%)	Water content/%)	Evaluation of beany flavor
				Example 1	76.9％	11.8％	Low beany flavor
Example 2	80.9％	11.3％	Low beany flavor
				Example 3	83.9％	11.5％	Low beany flavor
Example 4	84.9％	11.0％	Low beany flavor
				Example 5	70.2％	10.0％	Low beany flavor
Comparative example 1	78％	/	Heavy beany flavor

From the data in the table, the low-temperature soybean meal prepared by the conventional preparation method provided by the comparative example 1 still has the problem of heavy beany flavor, and the low-temperature soybean meal prepared by the production device and the preparation method of the low-beany flavor low-temperature defatted soybean meal provided by the embodiment of the invention has the characteristics of ideal nitrogen solubility index and water content, low beany flavor and the like, so that the production device and the preparation method provided by the invention can thoroughly solve the technical problems of serious beany flavor, low quality of the soybean meal and the like existing in the existing production method of soybean meal products, and have very wide application prospects in the field of deep processing of soybeans.