阅读说明：本技术 一种刮面式换热器和一种人造奶油生产系统装置 (Scraped surface type heat exchanger and margarine production system device ) 是由 吴昉 廖海聂 于 2019-09-29 设计创作，主要内容包括：本发明公开了一种刮面式换热器和一种人造奶油生产系统装置。所述刮面式换热器器身固定设置有一个中空的双管换热筒,筒内设置有一对相互啮合的齿轮,所述齿轮齿部外侧面与双管换热筒内侧面形状吻合并形成动配合状态。双管换热筒两端分别固定设置有端盖,所述齿轮齿部两端分别与端盖内侧面相吻合且呈动配合状态,所述齿轮两端轴肩分别支撑在所述端盖孔中并呈动配合状态；所述齿轮由驱动装置驱动产生对滚旋转；所述双管换热筒内设置有中空的通道a、通道b和接管,其接管内孔分别与中空的通道a、通道b相通。所述人造奶油生产系统装置急冷机采用了所述一种刮面式换热器。本发明涉及油脂及人造奶油生产技术装备制造领域。(The invention discloses a scraped surface heat exchanger and a margarine production system device. The scraping surface type heat exchanger is characterized in that a hollow double-tube heat exchange cylinder is fixedly arranged on the body of the scraping surface type heat exchanger, a pair of gears which are meshed with each other is arranged in the cylinder, and the outer side surface of the gear tooth part is matched with the inner side surface of the double-tube heat exchange cylinder in shape and forms a movable fit state. End covers are fixedly arranged at two ends of the double-tube heat exchange cylinder respectively, two ends of the gear tooth part are matched with the inner side surfaces of the end covers respectively and are in a movable fit state, and shaft shoulders at two ends of the gear are supported in the end cover holes respectively and are in a movable fit state; the gear is driven by a driving device to generate rolling rotation; the double-tube heat exchange tube is internally provided with a hollow channel a, a hollow channel b and a connecting tube, and the inner hole of the connecting tube is respectively communicated with the hollow channel a and the hollow channel b. The quick cooling machine of the margarine production system device adopts the scraped surface heat exchanger. The invention relates to the field of manufacturing of technical equipment for producing grease and margarine.)

1. A scraped surface heat exchanger characterized in that: the heat exchanger body is fixedly provided with a hollow double-tube heat exchange tube (3), a pair of gears a (8) and a gear b (2) which are meshed with each other are arranged in the double-tube heat exchange tube (3), the outer side surfaces of tooth parts of the gears a (8) and the gear b (2) are matched with the inner side surfaces of the double-tube heat exchange tube (3) in shape and form a movable fit state, two ends of the double-tube heat exchange tube (3) are respectively and fixedly provided with an end cover a (14) and an end cover b (15), two ends of the tooth parts of the gears a (8) and the gear b (2) are respectively matched with the inner side surfaces of the end cover a (14) and the end cover b (15) in a movable fit state, a shaft shoulder a (13) and a shaft shoulder b (12) of the gear a (8) and a shaft shoulder c (18) and a shaft shoulder d (19) of the gear b (2) are respectively supported in holes of the end cover a (, the gear a (8) and the gear b (2) are driven by a driving device (17) to generate opposite rolling rotation, a hollow channel a (6) and a hollow channel b (10) are arranged in the double-tube heat exchange tube (3), a connecting tube a (7) and a connecting tube b (11) are arranged on the double-tube heat exchange tube (3), and tube inner holes of the connecting tube a (7) and the connecting tube b (11) are respectively communicated with the hollow channel a (6) and the channel b (10).

2. The scraped surface heat exchanger of claim 1, wherein: the double-tube heat exchange device is characterized in that a jacket (5) is arranged on the outer side of the double-tube heat exchange tube (3), a closed interlayer (4) is formed between the double-tube heat exchange tube (3) and the jacket (5), a connecting tube c (1) and a connecting tube d (9) are arranged on the jacket (5), tube inner holes of the connecting tubes are respectively communicated with the interlayer (4), the number of the connecting tubes a (7) and the number of the connecting tubes b (11) are respectively 1 or more than 1, and a sealing device (16) is arranged at a shaft shoulder position close to one end of a driving device (17).

3. A scraped surface heat exchanger according to claim 1 or 2, wherein: the inner wall of the double-tube heat exchange tube (3) is a cylindrical surface.

4. A scraped surface heat exchanger according to claim 1 or 2, wherein: the inner wall of the double-tube heat exchange tube (3) is a conical surface.

5. A scraped surface heat exchanger according to claim 3 or 4, wherein: the gear a (8) and the gear b (2) are driven by one of the drive devices (17).

6. A scraped surface heat exchanger according to claim 3 or 4, wherein: the gear a (8) and the gear b (2) are driven by two driving devices (17) respectively.

7. A scraped surface heat exchanger according to claim 2 wherein: the number of the connecting pipes c (1) and d (9) is respectively 1 or more than 1, and the sealing device (16) is an O-shaped sealing ring or a Y-shaped sealing ring or a framework oil seal or a mechanical sealing component or a stuffing box sealing device.

8. A margarine production system apparatus for implementing the scraped-surface heat exchanger of claim 1, comprising an oil phase feeding tank (20), an aqueous phase feeding tank (21), a mixing and emulsifying tank (22), a high-pressure pump (23), a refrigerating unit (24), a quenching machine (25), a kneader (26), a refrigerant pipe a (28), a refrigerant pipe b (29) and a filling machine (27), wherein: the scraped surface heat exchanger is adopted by the quench cooler (25), a feed inlet of the quench cooler (25) is communicated with a discharge outlet of the high-pressure pump (23) through pipeline connection, a discharge outlet of the quench cooler (25) is communicated with a feed inlet of the kneader (26) through pipeline connection, and a refrigerant of the quench cooler (25) is respectively connected with the refrigerating unit (24) through a refrigerant pipe a (28) and a refrigerant pipe b (29).

9. A margarine production system apparatus according to claim 8, wherein: the scraped surface heat exchanger is one in number.

10. A margarine production system apparatus according to claim 8, wherein: the number of the scraped surface heat exchangers is more than one, and the inlet and outlet connection modes of the materials produced by the quenching machine (25) are in series connection or in parallel connection.

The invention relates to a heat exchanger and a margarine production system device, in particular to a scraped surface heat exchanger and a margarine production system device with the scraped surface heat exchanger, belonging to the field of manufacturing of technical equipment for producing grease and margarine.

In the background technology, margarine uses vegetable oil as a main raw material, and is processed into a solid or semi-solid emulsified food ingredient with certain plasticity through the steps of batching, heating and melting, mixing, emulsifying, cooling and cooling. The production process of the margarine is a continuous process, and generally comprises three stages of emulsification, rapid cooling (quick freezing) and kneading (mechanical plasticization), wherein the quick freezing process is that the emulsion is subjected to heat exchange rapidly in a quick freezer by using a refrigerant or a low-temperature medium and is rapidly cooled in the quick freezer to form a supercooled liquid containing fine grains; the quick-frozen margarine is introduced into a stirrer with a stirring rod, and the quick mechanical kneading is utilized to ensure that the crystallization and the dispersion are more uniform, prevent the premature solidification and finish the kneading process.

Margarine is an important edible oil product in modern food industry, and with the continuous diversification and high-end requirements of people on food, the quality of the existing margarine cannot completely meet the increasing market requirements. Variety diversification and food refinement require that margarine processing equipment develops towards high pressure, and require that a margarine production system can bear higher and higher working pressure so as to realize advancing to higher-quality products. People put forward higher and higher requirements on the efficiency, the effect, the energy conservation and the like of processing equipment while working pressure is higher and higher. At present, production system devices taking scraper type heat exchangers as cores are generally selected by people. The biggest problem of the scraper type heat exchanger is five points, which causes the defects and shortcomings of the response of the prior margarine production system device:

firstly, the scraper (scraper) is always tightly attached to the heat exchange wall in the high-speed working and running process to remove attachments adhered to the heat exchange wall so as to improve the heat exchange efficiency. Because the resistance generated by friction is large, the generated friction heat is also large, and the efficiency of the heat exchanger is reduced;

secondly, because the adhesive force between the frozen material and the inner wall of the heat exchange cylinder is large, the rotating speed of the scraper is higher, the friction heat generated during shearing the material is more, and the energy consumption is higher. After freezing many production materials, both viscosity and hardness become very high. The scraper type heat exchanger is driven by the scraper rotating shaft to rotate by the production materials in the whole heat exchange cylinder in the high-speed working and running process, the friction force between the condensation materials and the inner wall of the heat exchange cylinder is very large, the generated friction heat is very large, the refrigeration load is large, and the energy consumption is high;

and thirdly, in the high-speed working and running process of the scraper (scraper), serious large cavities can be formed on the heat exchange inner wall surface behind the scraper back, production materials cannot be supplemented in time, and no production materials exist, so that part of the production materials has no heat exchange effect. The area of the cavity is changed continuously according to the rotating speed of the scraper. In general, more than 60% of the whole heat exchange cylinder area can be achieved, so that the scraper type heat exchanger also has an important factor of low efficiency.

And fourthly, the rotary scraper in the scraper type heat exchanger has no discharging function, namely, in the rotary scraping process, the scraper stirs materials and does not push the production materials to the discharging direction. Therefore, the cooled material in the scraper heat exchanger is inevitably subjected to heat exchange with the material which is not cooled yet, the effect of rapid cooling cannot be achieved, the material which is rapidly cooled is heated again, and the efficiency and the effect are poor.

Fifthly, the thickness of the material layer on the heat exchange surface is thick, the heat exchange of the material far away from the heat exchange surface is slow, and the purpose of rapid cooling and freezing can not be realized. At present, the thickness of a material layer in the existing scraper type heat exchanger is generally 8-25 mm, and rapid cooling and freezing cannot be really realized at all. The thickness of the quick cooling jelly is below 2 mm. The existing scraper type heat exchanger cannot achieve the purpose at all.

The quick-freezing quick-cooling machine is the most critical equipment in the margarine production system device, and the performance of the quick-freezing quick-cooling machine directly determines the level of the device. The current scraped surface heat exchangers greatly limit the further development of margarine production system equipment technology.

The invention aims to overcome the defects in the prior art and provide a scraping heat exchanger with high efficiency, no contact friction and energy saving and a margarine production system device with the scraping heat exchanger with energy saving and high efficiency.

In order to solve the technical problems, the invention is realized by the following technical scheme: a scraped surface heat exchanger. The heat exchanger body is fixedly provided with a hollow double-pipe heat exchange cylinder 3; a pair of gears a8 and a gear b 2 which are meshed with each other are arranged in the double-tube heat exchange tube 3; the outer side surfaces of the tooth parts of the gear a8 and the gear b 2 are matched with the inner side surface of the double-tube heat exchange cylinder 3 in shape and form a movable fit state; an end cover a14 and an end cover b15 are respectively and fixedly arranged at two ends of the double-tube heat exchange cylinder 3; two ends of the tooth part of the gear a8 and the gear b 2 are respectively matched with the inner side surfaces of the end cover a14 and the end cover b15 and are in a movable fit state; a shoulder a 13 and a shoulder b 12 of the gear a8 and a shoulder c 18 and a shoulder d 19 of the gear b 2 are respectively supported in the holes of the end cover a14 and the end cover b15 in a movable fit state; the gear a8 and the gear b 2 are driven by a driving device 17 to generate the roll rotation; a hollow channel a 6 and a hollow channel b 10 are arranged in the double-tube heat exchange tube 3, a connecting tube a 7 and a connecting tube b11 are arranged on the double-tube heat exchange tube 3, and the inner holes of the connecting tubes are respectively communicated with the hollow channel a 6 and the hollow channel b 10.

A margarine production system device for implementing the scraped surface heat exchanger. The margarine production system device comprises an oil phase feeding tank 20, a water phase feeding tank 21, a mixing emulsification tank 22, a high-pressure pump 23, a refrigerating unit 24, a quenching machine 25, a kneading machine 26, a refrigerant pipe a 28, a refrigerant pipe b 29 and a filling machine 27, wherein the quenching machine 25 adopts the scraped surface type heat exchanger, a feed inlet of the quenching machine 25 is communicated with a discharge outlet of the high-pressure pump 23 through pipeline connection, a discharge outlet of the quenching machine 25 is communicated with a feed inlet of the kneading machine 26 through pipeline connection, and a refrigerant of the quenching machine 25 is respectively connected with the refrigerating unit 24 through the refrigerant pipe a 28 and the refrigerant pipe b 29.

The invention can also be realized by the following technical scheme: a jacket 5 is arranged on the outer side of the double-tube heat exchange cylinder 3; a closed interlayer 4 is formed between the double-tube heat exchange cylinder 3 and the jacket 5; the jacket 5 is provided with a connecting pipe c 1 and a connecting pipe d9, and the inner holes of the connecting pipes are respectively communicated with the interlayer 4; the number of the connecting pipes a 7 and the connecting pipes b11 is respectively 1 or more than 1; a sealing device 16 is arranged at a shaft shoulder close to one end of the driving device 17; the inner walls of the double-tube heat exchange tubes 3 are cylindrical surfaces; the inner wall of the double-tube heat exchange tube 3 is a conical surface; the gear a8 and the gear b 2 are driven by one of the driving devices 17; the gear a8 and the gear b 2 are respectively driven by two driving devices 17; the number of the connecting pipes c 1 and the connecting pipes d9 is respectively 1 or more than 1; the sealing device 16 is an O-shaped sealing ring or a Y-shaped sealing ring or a framework oil seal or a mechanical sealing component or a stuffing box sealing device. In the margarine production system apparatus, the scraped surface heat exchanger is one in number; the number of the scraped surface heat exchangers is more than one; the inlet and outlet connection mode of the materials produced by the quenching machine 25 is series connection or parallel connection.

Compared with the prior art, the invention has the following remarkable beneficial effects:

1. no contact friction heat is generated, and the power loss is small. In the invention, the outer sides of the gears which mutually roll and rotate in the scraped surface heat exchanger keep a tiny gap (for example, 0.1 mm) with the matched heat exchange inner wall, so that the free rotation of the counter gear is ensured, and the normal transmission of heat exchange is not influenced, thereby generating no contact friction heat.

2. The shearing heat generated when the materials are stirred is small, the energy consumption is low, and is only 0.16 percent of that of the scraper type heat exchanger. It is well known that the viscosity and hardness become high after freezing of the production material. The adhesive force between the frozen material and the inner wall of the heat exchange cylinder is large, the rotating speed of the main shaft is higher, the friction heat generated during shearing the material is more, and the energy consumption is higher. The normal working rotating speed is between 150 and 300 revolutions per minute, the rotating speed of a counter-rolling gear in the scraped surface heat exchanger is between 0.25 and 0.5 revolution per minute, and only 0.16 percent of the scraped surface heat exchanger. It can be seen that the heat generated by the rotation of the roller gear to stir the material is very small in the invention.

3. The rotating speed of the face scraping type heat exchanger to the hobbing gear is very low, the face scraping type heat exchanger does not work in a high-speed operation process, cavities cannot be formed on the back face of the teeth, and production materials can be filled into each tooth gap in time. All heat exchange surfaces completely participate in the work, and the utilization rate reaches 100 percent.

4. The face scraping type heat exchanger has a material discharging function on the roller gear, cooled production materials directly move towards the material discharging direction, do not return, are not mixed with materials which do not exchange heat, and the heat exchange efficiency is high. Like a gear pump, the volume of a space in a pair of roller gears is smaller as the roller gears enter the mutual meshing part, so that the roller gears have an extrusion effect, and materials can not stop at the meshing part; the volume of the space where the teeth on the pair of hobbing gears leave the meshing part is larger, so that the material suction effect is achieved; after the material is fully absorbed, the material can be driven to enter a material discharging area through the cooling surface by continuous rotation, and the positive material discharging effect is achieved.

5. The tooth height of the face-scraping heat exchanger to the hobbing gear can be reduced to below 2 mm. That is, the thickness of the material layer on the heat exchange surface can reach below 2 mm. In the prior art, the thickness of a material layer of the scraper type heat exchanger is generally 8-25 mm, and dust is detected when the thickness is less than 2 mm.

Drawings

Fig. 1 is a structural diagram of the scraped surface heat exchanger according to the present invention.

Fig. 2 is a structural view of the scraped surface heat exchanger provided with a driving device in the present invention.

Fig. 3 is a structural view of the scraped surface heat exchanger provided with two driving devices in the invention.

FIG. 4 is a system diagram of a margarine production apparatus of the present invention equipped with one of the scraped surface heat exchangers.

Fig. 5 is a system diagram of a margarine production apparatus of the present invention equipped with two such scraped surface heat exchangers.

The system comprises a connecting pipe c 1, a gear b 2, a double-pipe heat exchange cylinder 3, an interlayer 4, a jacket 5, a channel a 6, a connecting pipe a 7, a gear a8, a connecting pipe d9, a channel b 10, a connecting pipe b11, a shaft shoulder b 12, a shaft shoulder a 13, an end cover a14, an end cover b15, a sealing device 16, a driving device 17, a shaft shoulder c 18, a shaft shoulder d 19, an oil phase feeding tank 20, a water phase feeding tank 21, a mixed emulsion tank 22, a high-pressure pump 23, a refrigerating unit 24, a refrigerating unit 25, a kneading machine 26, a filling machine 27, a refrigerant pipe a 28 and a refrigerant pipe b 29.

Detailed description of the inventionin the following, the present invention will be described in further detail with reference to the accompanying drawings and detailed description.

As shown in fig. 1, 2 and 3, a scraped surface heat exchanger. The heat exchanger body is fixedly provided with a hollow double-pipe heat exchange cylinder 3; a pair of gears a8 and a gear b 2 which are meshed with each other are arranged in the hollow double-tube heat exchange cylinder 3; the outer side surfaces of the tooth parts of the gear a8 and the gear b 2 are matched with the inner side surface of the double-tube heat exchange cylinder 3 in shape, and a small gap (such as 0.1 mm) is kept to form a movable fit state; an end cover a14 and an end cover b15 are respectively and fixedly arranged at two ends of the double-tube heat exchange cylinder 3; two ends of the tooth part of the gear a8 and the gear b 2 are respectively matched with the inner side surfaces of the end cover a14 and the end cover b15, and a small gap (such as 0.1 mm) is kept to be in a movable fit state; a shoulder a 13 and a shoulder b 12 of the gear a8 and a shoulder c 18 and a shoulder d 19 of the gear b 2 are respectively supported in the holes of the end cover a14 and the end cover b15 in a movable fit state; the gear a8 and the gear b 2 are driven by the driving device 17 to generate the rolling rotation; the gear a8 and the gear b 2 can be driven by one of the driving devices 17; can also be driven by two of said driving means 17 respectively; the driving device 17 is preferably an electric driving device. A hollow channel a 6 and a hollow channel b 10 are arranged in the double-tube heat exchange tube 3, a connecting tube a 7 and a connecting tube b11 are arranged on the double-tube heat exchange tube 3, and tube inner holes of the connecting tubes are respectively communicated with the hollow channel a 6 and the hollow channel b 10; the number of the connecting pipe a 7 and the connecting pipe b11 is 1 or more than 1 respectively, and can be one or two or more respectively, and the appropriate number depends on the length of the double-pipe heat exchange cylinder 3.

The invention can also be realized by the following technical scheme: a jacket 5 is arranged on the outer side of the double-tube heat exchange cylinder 3; a closed interlayer 4 is formed between the double-tube heat exchange cylinder 3 and the jacket 5; the jacket 5 is provided with a connecting pipe c 1 and a connecting pipe d9, and the inner holes of the connecting pipes are respectively communicated with the interlayer 4; a sealing device 16 is arranged at a shaft shoulder close to one end of the driving device 17; the inner wall of the double-tube heat exchange tube 3 is a cylindrical surface or a conical surface, and the cylindrical surface is preferably selected; the number of the connecting pipes c 1 and the connecting pipes d9 is respectively 1 or more than 1, preferably one; the sealing device 16 is a 0-shaped sealing ring or a Y-shaped sealing ring or a framework oil seal or a mechanical sealing component or a stuffing box sealing device.

The double-tube heat exchange cylinder 3 can be made of materials with high heat conductivity coefficient, and 316 stainless steel materials with good heat conductivity and corrosion resistance are selected for occasions with high requirements on the food industry. The gear a8 and the gear b 2 can be made of various stainless steel materials or engineering plastics, and the specific requirements are met.

As shown in fig. 4 and 5, a margarine production system device for implementing the scraped surface heat exchanger. The margarine production system device comprises an oil phase feeding tank 20, a water phase feeding tank 21, a mixing emulsification tank 22, a high-pressure pump 23, a refrigerating unit 24, a quenching machine 25, a kneading machine 26, a refrigerant pipe a 28, a refrigerant pipe b 29 and a filling machine 27, wherein the quenching machine 25 adopts the scraped surface type heat exchanger, a feed inlet of the quenching machine 25 is communicated with a discharge outlet of the high-pressure pump 23 through pipeline connection, a discharge outlet of the quenching machine 25 is communicated with a feed inlet of the kneading machine 26 through pipeline connection, and a refrigerant of the quenching machine 25 is respectively connected with the refrigerating unit 24 through the refrigerant pipe a 28 and the refrigerant pipe b 29.

The invention can also be realized by the following technical scheme: in the margarine production system device, the number of the scraped surface heat exchangers is one or more than one, and the scraped surface heat exchangers are determined according to actual process requirements. The inlet and outlet connection mode of the materials produced by the quenching machine 25 is series connection or parallel connection, which is determined by the actual process requirements.