阅读说明：本技术 一种具有高压电场杀菌装置的蓝莓涂膜机 (Blueberry film coating machine with high-voltage electric field sterilization device ) 是由 邹小波 李家珩 石吉勇 李志华 黄晓玮 张宁 王婷婷 于 2020-05-13 设计创作，主要内容包括：本发明公开了一种具有高压电场杀菌装置的蓝莓涂膜机,涉及水果加工装备技术的领域。具体包括：进料槽,进料缓冲装置,浸涂槽,第一传送装置,第二传送装置,风干装置和高压电场发生装置。所述进料槽依托进料缓冲装置与第一传送装置相连；所述第一传送装置上表面呈内弧形,运转时部分通过安装在其内部的浸涂槽；所述第一传送装置末端与第二传送装置相连,控制物料的流水式传输；所述风干装置和高压电场发生装置成整体,安装在第二传送装置的中段。本发明中的高压电场发生装置可以在高压输入时电离空气,产生臭氧和负氧离子等具有抑菌功能的物质,在短时间内有效地杀灭霉腐微生物,控制涂膜后的蓝莓表面微生物数量处于较低水平,延长货架期。(The invention discloses a blueberry film coating machine with a high-voltage electric field sterilization device, and relates to the technical field of fruit processing equipment. The method specifically comprises the following steps: the device comprises a feeding groove, a feeding buffer device, a dip coating groove, a first conveying device, a second conveying device, an air drying device and a high-voltage electric field generating device. The feeding groove is connected with the first conveying device by virtue of a feeding buffer device; the upper surface of the first conveying device is in an inner arc shape, and part of the first conveying device passes through a dip coating tank arranged in the first conveying device during operation; the tail end of the first conveying device is connected with the second conveying device to control the flowing water type transmission of materials; the air drying device and the high-voltage electric field generating device are integrated and are arranged at the middle section of the second conveying device. The high-voltage electric field generating device can ionize air when high voltage is input, generate substances with bacteriostatic functions such as ozone and negative oxygen ions, effectively kill mildew and rot microorganisms in a short time, control the number of microorganisms on the surface of the coated blueberries to be at a lower level, and prolong the shelf life.)

1. The utility model provides a blueberry coating machine with high-voltage electric field sterilizing equipment which characterized in that includes: the device comprises a feeding groove, a feeding buffer device, a dip coating groove, a first conveying device, a second conveying device, an air drying device and a high-voltage electric field generating device; the feeding groove is connected with the first conveying device by virtue of a feeding buffer device; the upper surface of the first conveying device is in an inner arc shape, and part of the first conveying device passes through a dip coating tank arranged in the first conveying device during operation; the tail end of the first conveying device is connected with the second conveying device to control the flowing water type transmission of materials; the air drying device and the high-voltage electric field generating device are integrated and are arranged at the middle section of the second conveying device.

2. The blueberry film coating machine with the high-voltage electric field sterilization device as claimed in claim 1, wherein the feeding chute is a slope-shaped chute, and a certain space is formed at the bottom for accommodating blueberry stockpiling;

the feeding buffer device comprises a transmission mesh belt, a driving chain wheel and a driven chain wheel; the driving chain wheel and the driven chain wheel are respectively arranged above and below the transmission mesh belt and enable the transmission mesh belt to obliquely tension and rotate; the device is connected behind the feed chute, and the blueberries stocked at the feed inlet are slowly conveyed.

3. The blueberry film coating machine with the high-voltage electric field sterilization device as claimed in claim 1, wherein the first conveying device comprises a chain wheel, a chain, a round roller and a tension chain wheel; the round rollers are sequentially and orderly arranged on the chain, the chain is controlled by the chain wheel to move and angle, and the tensioning chain wheel is arranged at the bottom of the chain wheel; the device is connected behind the feeding buffer device, and the tensioning chain wheel controls the blueberries conveyed by the first conveying device to run in the dip-coating tank when passing through the dip-coating tank, so that the blueberries are completely immersed in the coating liquid at a certain conveying stage;

the second conveying device comprises a conveying net belt, a driving chain wheel and a driven chain wheel; the driving chain wheels are arranged on two sides of the transmission mesh belt and control the transmission mesh belt to move, and the driven chain wheels are arranged in the middle of the lower transmission mesh belt, so that the whole transmission mesh belt is in an inverted triangle shape; the device is connected behind the first conveyer, and the blueberry is transferred from the first conveyer to the transmission mesh belt of the second conveyer after dip-coating, and the drive sprocket and the driven sprocket control the transmission mesh belt to slowly run.

4. The blueberry film coating machine with the high-voltage electric field sterilization device as claimed in claim 1, wherein the air drying device comprises a fan, an air pipe and an air port; an air pipe is respectively inserted into two sides of the fan and is respectively connected with an air port on one side; the air port is arranged above the second conveying device;

the high-voltage electric field generating device comprises a high-voltage power supply, an insulating layer, a frame, a positive plate and a negative plate; the positive plate and the negative plate are fixed on the frame through an insulating layer and are connected with a high-voltage power supply; the frame of the high-voltage electric field generating device is erected on the second conveying device, so that the transmission mesh belt of the second conveying device passes through the space between the positive plate and the negative plate of the high-voltage electric field generating device.

5. The blueberry film coating machine with the high-voltage electric field sterilization device as claimed in claim 1, further characterized in that the aperture of the transmission mesh belt of the feeding buffering device is 1 × 1cm²And meanwhile, a certain included angle is formed between the conveying plane of the feeding buffer device and the horizontal direction, and the blueberries are driven to move upwards to enter the first conveying device.

6. The blueberry film coating machine with the high-voltage electric field sterilization device as claimed in claim 1, wherein the dip coating tank is a cuboid without a cover and is installed inside the first conveying device, so that the upper half part of the first conveying device passes through the dip coating tank, and the lower half part of the first conveying device is attached to the bottom of the dip coating tank to rotate.

7. The blueberry film coating machine with the high-voltage electric field sterilization device as claimed in claim 1, wherein the components of the film coating liquid in the dip coating tank are aqueous solutions of edible chitosan and agar, and the mass ratio of the edible chitosan to the agar is 1: 1, the concentration of the edible chitosan and agar in the mixed solution is 2% (w/v).

8. The blueberry film coating machine with the high-voltage electric field sterilization device as claimed in claim 1, wherein the upper half part of the first conveying device is fixed by a tension sprocket, so that the upper half part of the first conveying device is arc-shaped, and the height of the film liquid in the dip-coating tank is controlled, so that blueberries can be immersed in the film liquid when conveyed to the center of the dip-coating tank;

the second conveying device runs slowly, so that the blueberry passes through the high-voltage electric field generating device for 20-30 s.

9. The blueberry film coating machine with the high-voltage electric field sterilization device as claimed in claim 1, wherein air openings of the air drying device are arranged in front of and behind the high-voltage electric field generating device frame, and the coated blueberries can be air-dried before and after entering the frame.

10. The blueberry film coating machine with the high-voltage electric field sterilization device as claimed in claim 1, wherein the field intensity between the positive and negative plates (plate size: 30cm x 50cm) of the high-voltage electric field generation device is 10-15 kV/cm.

Technical Field

The invention relates to the technical field of fruit processing equipment, in particular to a blueberry film coating machine with a high-voltage electric field sterilization device.

Background

After fresh blueberries are picked, the blueberries are extremely easy to over-mature and go bad during storage and transportation, the edible and economic values of the blueberries are lost, and a large amount of waste is caused, so that the blueberries are usually subjected to external treatment during storage and transportation, and the aging and spoilage rate is slowed down. By reducing the ambient temperature and changing the gas composition in the storage, these methods can reduce the respiration intensity of the fruit and achieve a certain degree of freshness-retaining effect. However, the single preservation mode still has certain defects, so that an effective additional preservation technology has important value for further prolonging the shelf life.

The surface of the fruit is coated with a film, which is an efficient and feasible fresh-keeping technology, and a semi-permeable film is covered on the surface to establish a protective barrier and reduce the respiration intensity of the fruit, so that the effects of delaying putrefaction and prolonging the shelf life can be achieved. The invention patent with the application number of CN 209749654U discloses a film coating machine for fruit preservation, which is used for coating a film coating liquid on the surface of a fruit by the fruit passing through a dip coating groove filled with the film coating liquid and then drying the film coating liquid by a fan. The coating machine is difficult to ensure that the surface of the fruit is completely covered with the coating liquid in the working process, the components of the coating liquid are not reasonably proportioned, and the coated fruit is not subjected to secondary treatment, so that the fruit is difficult to ensure to be in a clean state. Therefore, the research on the blueberry film coating machine with the high-voltage electric field sterilization device can further improve the existing film coating preservation technology.

Disclosure of Invention

The invention aims to design a blueberry film coating machine with a high-voltage electric field sterilization device, which can effectively coat a film coating liquid on the surfaces of fruits uniformly, and sterilize the coated fruits through the high-voltage electric field device while air drying, so that secondary pollution of microorganisms after film coating is avoided. The invention has remarkable effects on improving the working performance of the film coating machine and prolonging the shelf life.

In order to achieve the purpose, the technical scheme of the invention is as follows:

the utility model provides a blueberry coating machine with high-voltage electric field sterilizing equipment specifically includes: the device comprises a feeding groove, a feeding buffer device, a dip coating groove, a first conveying device, a second conveying device, an air drying device and a high-voltage electric field generating device. The feeding groove is connected with the first conveying device by virtue of a feeding buffer device; the upper surface of the first conveying device is in an inner arc shape, and part of the first conveying device passes through a dip coating tank arranged in the first conveying device during operation; the tail end of the first conveying device is connected with the second conveying device to control the flowing water type transmission of materials; the air drying device and the high-voltage electric field generating device are integrated and are arranged at the middle section of the second conveying device.

The feed chute is a slope-shaped chute, and a certain space is formed at the bottom of the feed chute to accommodate blueberry hoarding.

The feeding buffer device comprises a transmission mesh belt, a driving chain wheel and a driven chain wheel, and the driving chain wheel and the driven chain wheel are respectively arranged above and below the transmission mesh belt and enable the transmission mesh belt to obliquely tension and rotate; the device is connected behind the feed chute, and the blueberries stocked at the feed inlet are slowly conveyed.

The first conveying device comprises a chain wheel, a chain, a round roller and a tension chain wheel; the round rollers are sequentially and orderly arranged on the chain, the chain is controlled by the chain wheel to move and angle, and the tensioning chain wheel is arranged at the bottom of the chain wheel; the device is connected behind the feeding buffer device, and the blueberries conveyed by the first conveying device are controlled by the tension chain wheel to pass through the dip-coating tank and run in the dip-coating tank, so that the blueberries are wholly immersed in the coating liquid at a certain conveying stage.

The second conveying device comprises a conveying net belt, a driving chain wheel and a driven chain wheel; the driving chain wheels are arranged on two sides of the transmission mesh belt and control the transmission mesh belt to move, and the driven chain wheels are arranged in the middle of the lower transmission mesh belt, so that the whole transmission mesh belt is in an inverted triangle shape; the device is connected behind the first conveyer, and the blueberry is transferred from the first conveyer to the transmission mesh belt of the second conveyer after dip-coating, and the drive sprocket and the driven sprocket control the transmission mesh belt to slowly run.

The air drying device comprises a fan, an air pipe and an air port; an air pipe is respectively inserted into two sides of the fan and is respectively connected with an air port on one side; the tuyere is installed above the second conveying device.

The high-voltage electric field generating device comprises a high-voltage power supply, an insulating layer, a frame, a positive plate and a negative plate; the positive plate and the negative plate are fixed on the frame through an insulating layer and are connected with a high-voltage power supply. The frame of the high-voltage electric field generating device is erected on the second conveying device, so that the transmission mesh belt of the second conveying device passes through the space between the positive plate and the negative plate of the high-voltage electric field generating device.

Further, the aperture of the transmission mesh belt of the feeding buffer device is 1 × 1cm²And meanwhile, a certain included angle is formed between the conveying plane of the feeding buffer device and the horizontal direction, and the blueberries are driven to move upwards to enter the first conveying device.

Furthermore, the dip-coating tank is a cuboid without a cover and is arranged inside the first conveying device, so that the upper half part of the first conveying device penetrates through the dip-coating tank, and the lower half part of the first conveying device is attached to the bottom of the dip-coating tank to rotate.

Further, the coating solution in the dip coating tank comprises an aqueous solution of edible chitosan and agar, wherein the mass ratio of the edible chitosan to the agar is 1: 1, the concentration of the edible chitosan and agar in the mixed solution is 2% (w/v).

Furthermore, the upper half part of the first conveying device is fixed by a tension chain wheel, so that the upper half part of the first conveying device is arc-shaped, and meanwhile, the height of the film liquid in the dip-coating tank is controlled, so that the blueberries can be immersed in the film liquid when being conveyed to the center of the dip-coating tank.

Furthermore, the second conveying device runs at a slow speed, so that the blueberry passes through the high-voltage electric field generating device for 20-30 s.

Furthermore, the air ports of the air drying device are arranged in the front and the back of the high-voltage electric field generating device frame, and the blueberries after being coated can be air-dried before and after entering the frame.

Furthermore, the field intensity between the positive plate and the negative plate (the plate size: 30cm multiplied by 50cm) of the high-voltage electric field generating device is 10-15 kV/cm.

The invention has the beneficial effects that:

the transmission mesh belt material used in the blueberry conveying device has certain elasticity, collision damage to blueberries in the conveying process can be reduced, meanwhile, the mesh structure can effectively fix the blueberries, sliding is prevented, and the transmission efficiency is improved.

The coating liquid used in the invention is prepared from edible chitosan and agar (the mixing ratio is 1: 1, and the concentration of the mixed liquid is 2% (w/v)), so that the mixed liquid has good antibacterial property and coagulability, can be well coated on the surface of blueberries, inhibits the growth of microorganisms, reduces the transpiration of fruits and prolongs the shelf life.

The high-voltage electric field generating device can ionize air when high voltage is input, generate substances with bacteriostatic functions such as ozone and negative oxygen ions, effectively kill mildew and rot microorganisms in a short time, control the number of microorganisms on the surface of the coated blueberries to be at a lower level, and prolong the shelf life.

Drawings

FIG. 1 is a front view of a blueberry film coating machine with a high-voltage electric field sterilization device, which is disclosed by the invention;

FIG. 2 is an enlarged view of portion A of FIG. 1;

fig. 3 is an enlarged view of a portion B in fig. 1.

The labels in the figures are: the device comprises a feed tank 1, a feed buffer device 2, a conveying mesh belt 21, a driving sprocket 22, a driven sprocket 23, a dip coating tank 3, a first conveying device 4, a sprocket 41, a chain 42, a round roller 43, a tension sprocket 44, a second conveying device 5, a conveying mesh belt 51, a driving sprocket 52, a driven sprocket 53, an air drying device 6, a fan 61, an air pipe 62, an air port 63, an air port 64, a high-voltage electric field generating device 7, a high-voltage power supply 71, an insulating layer 72, an insulating layer 73, a frame 74, a positive plate 75 and a negative plate 76.

Detailed Description

The technical scheme of the invention is clearly and completely described below with reference to the accompanying drawings and the detailed description.