Energy-saving and emission-reducing agricultural product processing system

Abstract

The utility model belongs to the technical field of agricultural product processing, and particularly relates to an energy-saving and emission-reducing agricultural product processing system. According to the specific technical scheme, the system comprises a boiler water tank, a steam boiler, a pressure steamer, a quick-freezing assembly and an air energy heat pump assembly, the boiler water tank is connected with a condenser of the air energy heat pump assembly, and water in the boiler water tank is heated through heat released by a refrigerant; the quick-freezing assembly is connected with an evaporator of the air energy heat pump assembly, a refrigerant absorbs heat from air, and cooled low-temperature air enters the quick-freezing assembly to quickly freeze agricultural products; warm water in the boiler water tank enters the steam boiler to be heated into steam and then enters the pressure steamer, and agricultural products enter the quick-freezing assembly after being steamed in the pressure steamer. By arranging the air energy heat pump assembly, cold water in the boiler water tank can be preheated, and frozen gas can be provided for the quick-freezing section.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of agricultural product processing technology, concretely relates to an energy-saving and emission-reducing agricultural product processing system. BACKGROUND

[0002] The quick freezing processing of agricultural products is a method that rapidly cools agricultural raw materials below freezing point through quick cooling technology and stores them at constant low temperature. This method can effectively maintain the original color, flavor and nutrient components of agricultural products, while inhibiting the growth of microorganisms and extending the shelf life of products. Quick freezing processing not only can improve the added value of agricultural products, but also can effectively solve the problem of seasonal over-supply, meet the market demand for high-quality agricultural products throughout the year without interruption, and has broad application prospects in the deep processing of agricultural products.

[0003] Corn, as a kind of nutrient-rich agricultural product, its quick freezing processing technology is particularly important. The specific processing process includes timely harvesting, peeling and removing silk, washing, steaming, water cooling, quick freezing, packaging and other links. In the existing corn processing production process, part of the waste heat (steam condensate water, exhaust gas, pressure relief steam, etc.) generated by the electric steam boiler is directly discharged, and the heat released by the condensate in the compressor assembly of the quick freezer is not utilized. In order to recycle these energies and avoid energy waste, the inventor proposes an energy-saving and emission-reducing agricultural product processing system. SUMMARY

[0004] To solve the above technical problems, the utility model provides an energy-saving and emission-reducing agricultural product processing system.

[0005] To achieve the purpose of the above utility model, the technical scheme adopted by the utility model is: an energy-saving and emission-reducing agricultural product processing system, comprising a boiler water tank, a steam boiler, a pressure steamer, a quick freezing assembly and an air energy heat pump assembly. The boiler water tank is connected with the condenser of the air energy heat pump assembly, and the heat released by the refrigerant is used to heat the water in the boiler water tank. The quick freezing assembly is connected with the evaporator of the air energy heat pump assembly, the refrigerant absorbs heat from the air, and the cooled low-temperature air enters the quick freezing assembly to freeze agricultural products. The warm water in the boiler water tank enters the steam boiler to be heated into steam, and then enters the pressure steamer. The agricultural products are cooked in the pressure steamer and then enter the quick freezing assembly.

[0006] Preferably, it further comprises a water chiller and a first heat exchanger. The water chiller is arranged between the pressure steamer and the quick freezing assembly. The agricultural products cooked in the pressure steamer first enter the water chiller for water cooling, and then enter the quick freezing assembly. The low-temperature air from the outlet of the cold end of the evaporator enters the first heat exchanger from the inlet of the cold end of the first heat exchanger, and is discharged from the outlet of the hot end of the first heat exchanger after heat exchange. The cold water enters the first heat exchanger from the inlet of the hot end of the first heat exchanger, and is discharged from the outlet of the cold end of the first heat exchanger after heat exchange.

[0007] Preferably, the air energy heat pump assembly comprises an evaporator, a gas-liquid separator, a compressor, a condenser, an expansion valve, the refrigerant enters the condenser from the condenser hot end inlet after being compressed by the compressor, is discharged from the condenser cold end outlet after heat release, enters the expansion valve, the water in the boiler water tank enters the condenser from the condenser cold end inlet, is discharged from the condenser hot end outlet after temperature rise, and enters the boiler water tank for storage; the refrigerant enters the evaporator from the evaporator cold end inlet after pressure reduction by the expansion valve, is discharged from the evaporator hot end outlet after heat absorption, enters the gas-liquid separator, enters the compressor again after liquid separation, the external air enters the evaporator from the evaporator hot end inlet, is discharged from the evaporator cold end outlet after heat release, and part of the low-temperature air after temperature drop enters the quick freezer, and the other part enters the first heat exchanger.

[0008] Preferably, the liquid separated by the gas-liquid separator enters the condenser from the evaporator cold end inlet.

[0009] Preferably, it further comprises a cleaning machine, and the agricultural products enter the pressure steamer after being cleaned by the cleaning machine.

[0010] Preferably, it further comprises a waste water recovery tank and a second heat exchanger, the waste water from the outlet of the cleaning machine and / or the waste water from the outlet of the water cooler and / or the steam condensate water and / or the pressure reduction cooling water generated by the pressure steamer enter the waste water recovery tank for storage, and / or, the exhaust gas and pressure relief gas generated by the pressure steamer enter the waste water recovery tank for storage; the water in the waste water recovery tank enters the second heat exchanger from the second heat exchanger hot end inlet, is discharged from the second heat exchanger cold end outlet after temperature drop; the cold water enters the second heat exchanger from the second heat exchanger cold end inlet, is discharged from the second heat exchanger hot end outlet after temperature rise, part of the water after temperature rise enters the cleaning machine, and the other part enters the boiler water tank.

[0011] Preferably, it further comprises a heat preservation water tank, the cold water enters the heat preservation water tank after heat exchange by the second heat exchanger, part of the water from the outlet of the heat preservation water tank enters the cleaning machine, and the other part enters the water softening unit; the water from the outlet of the water softening unit enters the boiler water tank.

[0012] Preferably, the quick freezing assembly comprises an air cooling section and a quick freezing section, the air cooling section uses external air or low-temperature air from the outlet of the quick freezing section to air cool the agricultural products; the quick freezing section uses low-temperature air from the evaporator cold end outlet to quick freeze the agricultural products.

[0013] Preferably, the air cooling section comprises an air cooling frame body arranged at the inlet of the quick freezing section, a plurality of rotating drums are arranged side by side on the air cooling frame body in the direction of movement of the agricultural products, a plurality of first through holes are arranged on the circumferential side wall of the rotating drum, a fixed cylinder is arranged in the rotating drum, a plurality of second through holes matched with the first through holes are arranged on the fixed cylinder, the second through holes are arranged on the quarter circumferential side wall of the fixed cylinder and located on the side of the upper end of the fixed cylinder close to the quick freezing section, and the low-temperature air in the quick freezing section outlet is introduced into the fixed cylinder.

[0014] Preferably, the quick freezing section comprises a quick freezing tank, a plurality of metal mesh belts are arranged in the quick freezing tank, the agricultural products are conveyed in an S shape on the plurality of metal mesh belts, a first air blower communicating with the evaporator is arranged at the top of the quick freezing tank, and a second air blower communicating with the fixed cylinder is arranged at the lower part of the quick freezing tank.

[0015] Compared with the prior art, the application has the following beneficial effects:

[0016] 1. The air energy heat pump assembly is arranged between the quick freezing assembly and the boiler water tank, the water in the boiler water tank is heated to a certain temperature by the air energy heat pump assembly, then enters the steam boiler to be heated to a steam state and enters the pressure steamer, the air outside is reduced to a quick freezing temperature by the air energy heat pump assembly and is sent into the quick freezing assembly to freeze the agricultural products, and the cold water in the boiler water tank is preheated by the air energy heat pump assembly, and the freezing gas for the quick freezing section is provided.

[0017] 2. The cooling water entering the cooling machine is cooled by the first heat exchanger, the cooling capacity is obtained from the air energy heat pump assembly, the use rate of the air energy heat pump assembly is improved, a separate cooling source does not need to be arranged, and energy consumption is saved.

[0018] 3. The second heat exchanger and the waste water recovery tank are arranged, the waste water generated by cleaning and water cooling, the steam condensate water generated by cooking, the pressure reducing cooling water, the waste heat in the exhaust gas and the pressure relief gas are recovered, the waste heat is used to heat the cold water, and the cold water after being heated is used for cleaning the agricultural products and preheating the cooking steam, the energy consumption of the steam boiler is saved, and the agricultural products that need to be cooked are preheated.

[0019] 4. The wind cooling machine frame body is provided with a plurality of rotating drums in parallel along the moving direction of the agricultural products, a plurality of first through holes are arranged on the circumferential side wall of the rotating drum, a fixed cylinder is arranged in the rotating drum, and a plurality of second through holes matched with the first through holes are arranged on the fixed cylinder; the second through holes are arranged on the quarter circumferential side wall of the fixed cylinder and located on the side close to the quick freezing section at the upper end of the fixed cylinder, and the low-temperature air from the outlet of the quick freezing section is introduced into the fixed cylinder. During the rotation of the rotating drum, along the radial direction of the fixed cylinder, when the first through hole is aligned with the second through hole, the gas in the fixed cylinder will flow out through the first through hole to air cool the agricultural products on the rotating drum. The air cooling section can not only convey the agricultural products, but also air cool the agricultural products. The air cooling gas has a forward thrust on the agricultural products, so that the agricultural products do not stagnate and manual operation is not needed, thereby greatly saving the labor cost. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 The process flow chart of the utility model;

[0021] Figure 2 The cross-sectional view of the quick freezing assembly of the utility model;

[0022] Figure 3 The cross-sectional view of the air cooling section of the quick freezing assembly of the utility model;

[0023] Figure 4 The cross-sectional view of the quick freezing assembly of the utility model; Figure 3

[0024] Figure 5 The state diagram of the drainage assembly of the utility model when draining water;

[0025] Figure 6 The cross-sectional view of the quick freezing assembly of the utility model; Figure 2

[0026] Markings in the drawings: cleaning machine 1, pressure steamer 2, water cooling machine 3, quick freezing assembly 4, waste water recovery tank 5, second heat exchanger 6, heat preservation water tank 7, soft water machine set 8, boiler water tank 9, steam boiler 10, condenser 11, expansion valve 12, evaporator 13, gas-liquid separator 14, compressor 15, first heat exchanger 16, quick freezing tank 17, metal mesh belt 18, guide plate 19, first air blower 20, third through hole 21, roller shaft 22, discharging section 23, bottom plate 24, front plate 25, transverse plate 26, water tank 27, water pipe 28, transmission mechanism 29, gas distribution pipe 30, connecting shaft 31, first through hole 32, rotating drum 33, fixed cylinder 34, second through hole 35, cavity 36, gas conveying shaft 37, vertical plate 38, drainage hole 39, sealing block 40, triangular support 41, cylinder 42, clearance hole 43, guide cylinder 44, connecting rod 45, compression spring 46, floating plate 47, sealing flange 48, pull rope 49, second air blower 50. DETAILED DESCRIPTION​​

[0027] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Unless otherwise specified, the technical means used in the embodiments are conventional means well known to those skilled in the art.

[0028] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0029] like Figures 1-6 As shown, this utility model discloses an energy-saving and emission-reducing agricultural product processing device, including a washing machine 1, a pressure steamer 2, a water chiller 3, and a quick-freezing component 4 arranged sequentially according to the agricultural product processing order. The washing machine 1 is used to wash agricultural products, the pressure steamer 2 uses high-temperature steam to cook the washed agricultural products under a certain pressure, the water chiller 3 is used to cool the cooked agricultural products with water, and the quick-freezing component 4 is used to quick-freeze the water-cooled agricultural products. The quick-frozen agricultural products are then packaged. In this processing system, a steam boiler 10 heats clean cold water to a steam state, and then the high-temperature steam is introduced into the pressure steamer 2. At the same time, low-temperature gas is provided to the quick-freezing component 4 for quick-freezing agricultural products. Combining the intended use of the steam boiler 10 and the quick-freezing component 4 with the working process of the air source heat pump component, the agricultural product processing system proposed in this application sets up an air source heat pump component between the quick-freezing component 4 and the boiler water tank 9. The air source heat pump component heats the water in the boiler water tank 9 to a certain temperature, and then the water enters the steam boiler 10 to be heated to a steam state before entering the pressure steamer 2. At the same time, the air source heat pump component lowers the outside air to the quick-freezing temperature (18-23℃) and then sends it into the quick-freezing component 4 to quick-freeze the agricultural products.

[0030] Specifically, the boiler water tank 9 is connected with the condenser 11 of the air energy heat pump assembly, the water with low temperature at the outlet of the boiler water tank 9 enters the condenser 11 from the cold end inlet of the condenser 11, and after heat exchange with the refrigerant in the condenser 11, the water flows out from the hot end outlet of the condenser 11 and returns to the boiler water tank 9 again, that is, the clean water in the boiler water tank 9 is heated by the heat released by the refrigerant; the quick freezing assembly 4 is connected with the evaporator 13 of the air energy heat pump assembly, the air with high temperature from the outside enters the evaporator 13 from the hot end inlet of the evaporator 13, and after heat exchange with the refrigerant in the evaporator 13, the air flows out from the cold end outlet of the evaporator 13 and enters the quick freezing assembly 4 again, that is, the refrigerant absorbs heat from the outside air to cool the outside air.

[0031] The steam boiler 10 can adopt a gas boiler, a coal boiler and an electric heating boiler. In order to improve the steaming efficiency and save energy consumption, it is recommended to adopt an electric heating boiler.

[0032] Further, the water cooling machine 3 generally uses cooling water to cool the agricultural products after cooking, and the cooling water temperature in the room is generally high in summer. In order to improve the cooling effect of the water cooling machine 3, the agricultural product processing system is further provided with a first heat exchanger 16, and the low-temperature air at the cold end outlet of the evaporator 13 is partially sent to the quick freezing assembly 4 and the other part is sent to the first heat exchanger 16 to exchange heat with the cooling water, and the cooled cooling water is then sent to the water cooling machine 3 to cool the agricultural products. Specifically, the low-temperature air at the cold end outlet of the evaporator 13 enters the first heat exchanger 16 from the cold end inlet of the first heat exchanger 16, and after heat exchange, the air is directly discharged to the environment from the hot end outlet of the first heat exchanger 16 or is sent to the air cooling section of the quick freezing assembly 4 to air cool the agricultural products after water cooling; the cooling water enters the first heat exchanger 16 from the hot end inlet of the first heat exchanger 16, is further cooled, and is then discharged from the cold end outlet of the first heat exchanger 16 and then sent to the water cooling machine 3. By arranging the first heat exchanger 16, the cooling water entering the cooling machine can be cooled, and the cooling capacity is obtained from the air energy heat pump assembly, thereby improving the utilization rate of the air energy heat pump assembly and saving energy consumption without the need to separately arrange a cooling source.

[0033] The processing system, pressure steamer 2 will produce 90 ℃ or so steam condensate, 60 ℃ or so pressure cooling water and 70-100 ℃ or so exhaust, pressure relief gas, the existing process is to discharge this part of the energy directly, resulting in waste of heat energy, the processing system of the application is to utilize this part of the heat by reasonable design, to achieve the purpose of energy saving and emission reduction. The application also sets up a second heat exchanger 6, a waste water recovery tank 5, the waste water of the cleaning machine 1 outlet, the waste water of the water cooling machine 3 outlet, one or more of the steam condensate and pressure cooling water produced by the pressure steamer 2 enter the waste water recovery tank 5 for storage, and / or, the exhaust gas and pressure relief gas produced by the pressure steamer 2 enter the waste water recovery tank 5 for storage; the waste water in the waste water recovery tank 5 is heated by the second heat exchanger 6, and the cold water is heated, part of which enters the cleaning machine 1 to clean agricultural products, and the other part enters the steam boiler 10 to save energy consumption of the steam boiler 10.

[0034] It should be noted that if the cleaning machine 1 uses normal temperature water for cleaning, or the waste water temperature discharged by the cooling machine is lower than 25-30 ℃ (the temperature can be set according to actual demand), then the waste water recovery tank 5 only needs to recover the waste heat produced by the pressure steamer 2.

[0035] Further, the processing system further comprises a heat preservation water tank 7, which is arranged between the second heat exchanger 6 and the cleaning machine 1 and the soft water machine group 8. The clean cold water is heated by the second heat exchanger 6 and then enters the heat preservation water tank 7. The heat preservation water tank 7 is used to store and buffer the water heated by the second heat exchanger 6. The heated water can enter the cleaning machine 1 to clean agricultural products, or can enter the soft water machine group 8. The water outlet of the soft water machine group 8 enters the boiler water tank 9, and the water outlet of the boiler water tank 9 enters the steam boiler 10 to be heated into steam. Specifically, the clean cold water enters the second heat exchanger 6 from the cold end inlet of the second heat exchanger 6, is heated and then discharged from the hot end outlet of the second heat exchanger 6, and then enters the heat preservation water tank 7. The waste water from the waste water recovery tank 5 enters the second heat exchanger 6 from the hot end inlet of the second heat exchanger 6, is cooled and then discharged from the cold end outlet of the second heat exchanger 6.

[0036] Further, the air energy heat pump assembly comprises an evaporator 13, a gas-liquid separator 14, a compressor 15, a condenser 11, and an expansion valve 12, and the evaporator 13, the gas-liquid separator 14, the compressor 15, the condenser 11, and the expansion valve 12 are sequentially connected to form a refrigerant circulation system. The refrigerant enters the condenser 11 from the hot end inlet of the condenser 11 after being compressed by the compressor 15, is discharged from the cold end outlet of the condenser 11 after heat release, and enters the expansion valve 12. The water in the boiler water tank 9 enters the condenser 11 from the cold end inlet of the condenser 11, is discharged from the hot end outlet of the condenser 11 after being heated, and is stored in the boiler water tank 9. The refrigerant enters the evaporator 13 from the cold end inlet of the evaporator 13 after being decompressed by the expansion valve 12, is discharged from the hot end outlet of the evaporator 13 after absorbing heat, and enters the gas-liquid separator 14. The liquid separated by the gas-liquid separator 14 enters the compressor 15 again. The outside air enters the evaporator 13 from the hot end inlet of the evaporator 13, is discharged from the cold end outlet of the evaporator 13 after heat release, and enters the first heat exchanger 16. The liquid separated by the gas-liquid separator 14 enters the condenser 11 from the cold end inlet of the evaporator 13 again.

[0037] Further, as shown in Figures 2-6 To improve the efficiency of the quick freezing assembly 4, the agricultural products are usually air-cooled before entering the quick freezing section after being water-cooled, so as to remove the water droplets on the surface of the agricultural products and avoid adhesion of the agricultural products to the conveying belt during quick freezing. The existing method is to additionally arrange an air-cooling device between the quick freezing assembly 4 and the water-cooling machine 3, which not only increases the equipment area, but also increases the process cost. The existing quick freezing assembly 4 usually needs to be provided with an inlet section at the inlet of the freezing section. The inlet section is composed of a plurality of rotating drums 33. The agricultural products are placed on the inlet section. The plurality of rotating drums 33 drive the agricultural products to move forward and send the agricultural products into the freezing section. Sometimes, the circular shaft type agricultural products (such as corn) are stuck between two rotating drums 33 and cannot move forward. The inventor improves the inlet section of the existing quick freezing assembly 4 and combines air cooling and feeding to solve the above technical problems.

[0038] Specifically, the quick freezing assembly 4 comprises an air-cooling section and a quick freezing section. The air-cooling section adopts outside air or low-temperature air from the outlet of the quick freezing section or the outlet of the first heat exchanger 16 to air-cool the agricultural products. It is recommended to use the low-temperature air from the outlet of the quick freezing section or the outlet of the first heat exchanger 16 to pre-cool the agricultural products. The quick freezing section adopts low-temperature air from the cold end outlet of the evaporator 13 to quick-freeze the agricultural products.

[0039] The air cooling section comprises an air cooling frame body arranged at the inlet of the quick freezing section, a plurality of rotating drums 33 are arranged side by side on the air cooling frame body along the moving direction of the agricultural products, the plurality of rotating drums 33 are driven to rotate by a transmission mechanism 29, the transmission mechanism 29 is of the prior art and will not be described here. The rotating drum 33 is designed as a hollow structure, and a connecting shaft 31 is arranged at each end of the rotating drum 33, and the connecting shaft 31 is rotatably connected to the air cooling frame body through a bearing. A fixed drum 34 that does not rotate is arranged in the rotating drum 33, the fixed drum 34 is also designed as a hollow structure, and a gas conveying shaft 37 is arranged to penetrate the fixed drum 34 along the axis direction of the fixed drum 34, one end of the gas conveying shaft 37 extends out of the fixed drum 34 and is connected to one of the connecting shafts 31 through a bearing, and is fixedly connected to one side of the air cooling frame body, and the other end of the gas conveying shaft 37 extends out of the fixed drum 34 and is connected to the other connecting shaft 31 through a bearing, and is fixedly connected to the other side of the air cooling frame body. The gas conveying shaft 37 is provided with a cavity along the axis direction of the gas conveying shaft 37, one end of the cavity is communicated with the gas distribution pipe 30, and a plurality of gas conveying shafts 37 are communicated with the gas distribution pipe 30. External air or low-temperature air from the outlet of the quick freezing section or low-temperature air from the outlet of the first heat exchanger 16 is sent into the gas distribution pipe 30 by a gas pump or a second air blower 50.

[0040] A plurality of first through holes 32 are arranged on the circumferential side wall of the rotating drum 33, a plurality of second through holes 35 adapted to the first through holes 32 are arranged on the fixed drum 34, the second through holes 35 are arranged on one quarter of the circumferential side wall of the fixed drum 34 and are located on the side of the upper end of the fixed drum 34 close to the quick freezing section, and a plurality of third through holes 21 are arranged on the upper end of the gas conveying shaft 37 away from the quick freezing section. The low-temperature air from the outlet of the quick freezing section is sent into the gas distribution pipe 30 by the second air blower 50, the gas distribution pipe 30 distributes the gas to each gas conveying shaft 37, the gas flows into the cavity of the fixed drum 34 through the third through holes 21, and during the rotation of the rotating drum 33, when the first through holes 32 and the second through holes 35 are aligned along the radial direction of the fixed drum 34, the gas in the fixed drum 34 flows out through the first through holes 32 to air cool the agricultural products on the rotating drum 33. The air cooling section not only can convey the agricultural products, but also can air cool the agricultural products.

[0041] It should be noted that the fixed drum 34 does not affect the rotation of the rotating drum 33 in the gap cooperation between the inner side wall of the rotating drum 33 and the outer side wall of the fixed drum 34.

[0042] In a preferred embodiment, a plurality of first through holes 32 are evenly distributed along the circumference of the rotating drum 33. A plurality of second through holes 35 are evenly distributed along the circumference of the fixed drum 34, between the tangent point at the top of the fixed drum 34 and the tangent point near the quick-freezing section. This prevents water from falling into the cavity of the fixed drum 34 from the top. Simultaneously, since the second through holes 35 are located on the side near the quick-freezing section, if agricultural products become stuck between the two rotating drums 33 and continuously rotate without moving forward, gas flows out through the first and second through holes 35, exerting a forward thrust on the agricultural products and blowing them out of the clamping groove formed by the two rotating drums 33. By rationally setting the position of the second through holes 35, not only can agricultural products be air-cooled, but also stagnation can be prevented, eliminating the need for manual operation and greatly saving labor costs. By setting the third through hole 21 above the air conveying shaft 37 and away from the quick-freezing section, and by staggering the second through hole 35 and the third through hole 21, a small amount of water can be prevented from entering the air conveying shaft 37 through the third through hole 21, thereby affecting the normal use of the air conveying shaft 37.

[0043] Furthermore, since the water-cooled agricultural products directly enter the feeding section, some cooling water may enter the cavity of the fixed cylinder 34 through the first and second through holes 35. Over time, more and more cooling water will accumulate in the cavity of the fixed cylinder 34, eventually entering the air conveying shaft 37 through the third through hole 21, thus affecting the normal operation of the air conveying shaft 37. To solve this technical problem, a drainage component is fixedly installed at the bottom of the fixed cylinder 34, such as... Figures 5-6 As shown, an upward-facing water tank 27 is provided on the main body of the air-cooled frame and below several rotating cylinders 33. When the cooling water in the fixed cylinder 34 reaches a certain height (this height can be designed as needed, but must be lower than the height of the air conveying shaft 37 in the fixed cylinder 34), the drainage assembly can drain the cooling water in the fixed cylinder 34 into the water tank 27, and then drain the water in the water tank 27 through the water pipe 28.

[0044] Specifically, the drainage assembly includes a drainage frame body. A compression spring 46 is fixedly installed on the top of the drainage frame body, and a sealing block 40 is installed at the other end of the compression spring 46. A drainage hole 39 adapted to the sealing block 40 is provided on the circumferential side wall of the fixed cylinder 34 and located at the bottom of the fixed cylinder 34. The position of the drainage hole 39 also needs to correspond to the position of the first through hole 32. A float plate 47 is provided inside the drainage frame body. A pull rope 49 is fixedly installed at the bottom of the float plate 47, and the other end of the pull rope 49 is fixedly connected to the top of the sealing block 40. The top and bottom of the drainage frame body are connected to the cavity of the fixed cylinder 34. The diameter of the drainage hole 39 gradually decreases from the inside to the outside, and a sealing flange 48 is provided at the end of the sealing block 40 away from the drainage hole 39.

[0045] The drainage frame body comprises a cylinder 42 with upper and lower openings, and a triangular support 41 is fixedly arranged at the bottom of the cylinder 42 and fixedly connected with the inner bottom of the fixing cylinder 34. By arranging the triangular support 41, the bottom of the drainage frame body can be communicated with the cavity of the fixing cylinder 34, so that the cooling water in the cavity of the fixing cylinder 34 can enter the inside of the cylinder 42 through the triangular support 41. A connecting rod 45 is arranged at the top of the inside of the cylinder 42, a guide cylinder 44 is fixedly arranged at the lower end of the connecting rod 45, one end of a compression spring 46 is fixedly connected with the inner top of the guide cylinder 44, and the other end of the compression spring 46 is fixedly connected with the upper surface of the sealing block 40. By arranging the guide cylinder 44, the compression spring 46 can accurately press the sealing block 40 into the drainage hole 39.

[0046] The floating plate 47 corresponds to the shape of the cylinder 42, and rises in the cylinder 42 under the buoyancy of the cooling water in the fixing cylinder 34. The floating plate 47 pulls the sealing block 40 through the pull rope 49, continues to compress the compression spring 46, and pulls the sealing block 40 out of the drainage hole 39. The cooling water in the fixing cylinder 34 is discharged into the water tank 27 through the drainage hole 39 and the first through hole 32. By arranging the pull rope 49, only when the cooling water in the fixing cylinder 34 reaches a certain height, the pull rope 49 has a pulling force and can pull the sealing block 40. When the cooling water in the fixing cylinder 34 is discharged, the floating plate 47 descends to the bottom of the fixing cylinder 34 without buoyancy, the sealing block 40 is pressed into the drainage hole 39 under the rebounding force of the compression spring 46, and the compression spring 46 is always in a compressed state to prevent the air cooling gas in the cavity of the fixing cylinder 34 from being discharged from the drainage hole 39.

[0047] It should be noted that the floating plate 47 is provided with a clearance hole 43 for the upward and downward movement of the sealing block 40.

[0048] Further, the quick-freezing section comprises a quick-freezing box 17, a plurality of metal mesh belts 18 are arranged in the quick-freezing box 17 from top to bottom, the conveying directions of adjacent two metal mesh belts 18 are opposite, and the agricultural products are conveyed in an S shape on the plurality of metal mesh belts 18. A guide plate 19 is arranged at the conveying terminal of each metal mesh belt 18 and on the inner side wall of the quick-freezing box 17, so as to guide the agricultural products of the upper layer to the metal mesh belt 18 of the lower layer. A first air blower 20 is arranged at the top of the quick-freezing box 17 and communicates with the evaporator 13. A second air blower 50 is arranged at the lower part of the quick-freezing box 17 and communicates with the air distribution pipe 30 through an air supply pipe. A material conveying outlet is arranged at the lower end of the quick-freezing box 17, and a discharging section 23 is arranged outside the quick-freezing box 17 and connected with the material conveying outlet. A plurality of synchronously rotating roller shafts 22 are arranged side by side along the moving direction of the agricultural products, and the roller shafts 22 are driven by the existing transmission mechanism 29.

[0049] Further, the air-cooled frame body is composed of two vertical plates 38, a horizontal plate 26, the two vertical plates 38 are symmetrically arranged and fixedly connected with the quick-freezing box 17, the horizontal plate 26 is fixedly arranged between the two vertical plates 38, the front ends of the two vertical plates 38 are provided with a front plate 25, the bottom of the two vertical plates 38 is provided with a bottom plate 24, the lower end of the horizontal plate 26 and the two vertical plates 38, the front plate 25, the bottom plate 24 and the side wall of the quick-freezing box 17 form a box body, and the box body is used for placing the air energy heat pump assembly.

[0050] The utility model discloses still a kind of energy-saving and emission-reducing agricultural product processing technology, agricultural product is sequentially cleaned with 40 ℃ warm water, steam cooking, water cooling, air cooling, quick freezing, air energy heat pump assembly is cooled to quick freezing component 4, preheats to cooking steam, the refrigerated air of air energy heat pump assembly evaporator 13 export is cooled to agricultural product after heat exchange with the cold water used for water cooling;Waste water generated by cleaning and water cooling, steam condensate water generated by cooking, pressure reducing cooling water, exhaust and waste heat in pressure relief gas are used to heat cold water, and part of heated cold water is used for agricultural product cleaning, and another part is used for preheating cooking steam.

[0051] The above-described embodiments are merely preferred modes of the utility model, and do not limit the scope of the utility model, and various deformations, variations, modifications and replacements of the technical solutions of the utility model made by those skilled in the art without departing from the design spirit of the utility model shall fall within the protection scope defined by the claims of the utility model.

Claims

1. An energy-saving and emission-reducing agricultural product processing system, characterized in that: The system includes a boiler water tank (9), a steam boiler (10), a pressure steamer (2), a quick-freezing assembly (4), and an air-source heat pump assembly. The boiler water tank (9) is connected to the condenser (11) of the air-source heat pump assembly, and the water in the boiler water tank (9) is heated by the heat released by the refrigerant. The quick-freezing assembly (4) is connected to the evaporator (13) of the air-source heat pump assembly. The refrigerant absorbs heat from the air, and the cooled air enters the quick-freezing assembly (4) to quick-freeze agricultural products. The warm water in the boiler water tank (9) enters the steam boiler (10) and is heated into steam before entering the pressure steamer (2). The agricultural products are steamed in the pressure steamer (2) and then enter the quick-freezing assembly (4).

2. The energy-saving and emission-reducing agricultural product processing system according to claim 1, characterized in that: It also includes a water chiller (3) and a first heat exchanger (16). The water chiller (3) is located between the pressure steamer (2) and the quick-freezing assembly (4). After being steamed in the pressure steamer (2), the agricultural products first enter the water chiller (3) for water cooling and then enter the quick-freezing assembly (4). The low-temperature air at the cold end outlet of the evaporator (13) enters the first heat exchanger (16) from the cold end inlet and is discharged from the hot end outlet of the first heat exchanger (16) after heat exchange. The cold water enters the first heat exchanger (16) from the hot end inlet and is discharged from the cold end outlet of the first heat exchanger (16) after heat exchange.

3. The energy-saving and emission-reducing agricultural product processing system according to claim 2, characterized in that: The air source heat pump assembly includes an evaporator (13), a gas-liquid separator (14), a compressor (15), a condenser (11), and an expansion valve (12). The refrigerant is compressed by the compressor (15) and enters the condenser (11) from the hot end inlet. After releasing heat, it is discharged from the cold end outlet of the condenser (11) and enters the expansion valve (12). Water in the boiler water tank (9) enters the condenser (11) from the cold end inlet. After the water is heated, it is discharged from the hot end outlet of the condenser (11) and enters the boiler. Water tank (9) stores; after the refrigerant is depressurized by expansion valve (12), it enters evaporator (13) from the cold end inlet of evaporator (13), absorbs heat and is discharged from the hot end outlet of evaporator (13) into gas-liquid separator (14), after the liquid is separated, it enters compressor (15) again; outside air enters evaporator (13) from the hot end inlet of evaporator (13), releases heat and is discharged from the cold end outlet of evaporator (13), part of the cooled low temperature air enters quick-freezing component (4) and the other part enters first heat exchanger (16).

4. The energy-saving and emission-reducing agricultural product processing system according to claim 3, characterized in that: The liquid separated by the gas-liquid separator (14) enters the condenser (11) from the cold end inlet of the evaporator (13).

5. An energy-saving and emission-reducing agricultural product processing system according to any one of claims 2-4, characterized in that: It also includes a cleaning machine (1), and agricultural products are cleaned by the cleaning machine (1) and then enter the pressure steamer (2).

6. The energy-saving and emission-reducing agricultural product processing system according to claim 5, characterized in that: It also includes a wastewater recovery tank (5) and a second heat exchanger (6). Wastewater from the outlet of the cleaning machine (1) and / or wastewater from the outlet of the water chiller (3) and / or steam condensate and / or depressurization cooling water generated by the pressure steamer (2) are stored in the wastewater recovery tank (5). And / or, exhaust gas and depressurization gas generated by the pressure steamer (2) are stored in the wastewater recovery tank (5). Water in the wastewater recovery tank (5) enters the second heat exchanger (6) from the hot end inlet and is discharged from the cold end outlet after cooling. Cold water enters the second heat exchanger (6) from the cold end inlet and is discharged from the hot end outlet after heating. Part of the heated water enters the cleaning machine (1) and the other part enters the boiler water tank (9).

7. The energy-saving and emission-reducing agricultural product processing system according to claim 6, characterized in that: It also includes an insulated water tank (7), where cold water enters the insulated water tank (7) after being heated by the second heat exchanger (6). Part of the water from the outlet of the insulated water tank (7) enters the cleaning machine (1), and the other part enters the water softener unit (8). The water from the outlet of the water softener unit (8) enters the boiler water tank (9).

8. The energy-saving and emission-reducing agricultural product processing system according to claim 3, characterized in that: The quick-freezing component (4) includes an air-cooling section and a quick-freezing section. The air-cooling section uses outside air or low-temperature air from the outlet of the quick-freezing section to air-cool agricultural products. The quick-freezing section uses low-temperature air from the cold end outlet of the evaporator (13) to quick-freeze agricultural products.

9. The energy-saving and emission-reducing agricultural product processing system according to claim 8, characterized in that: The air-cooling section includes an air-cooling frame body located at the inlet of the quick-freezing section. Several synchronously rotating drums (33) are arranged side by side on the air-cooling frame body along the direction of agricultural product movement. Several first through holes (32) are provided on the circumferential sidewall of the drum (33). A fixed cylinder (34) is provided inside the drum (33). Several second through holes (35) adapted to the first through holes (32) are provided on the fixed cylinder (34). The second through holes (35) are arranged on the quarter circumferential sidewall of the fixed cylinder (34) and located on the side of the upper end of the fixed cylinder (34) close to the quick-freezing section. Low-temperature air from the outlet of the quick-freezing section is introduced into the fixed cylinder (34).

10. The energy-saving and emission-reducing agricultural product processing system according to claim 9, characterized in that: The quick-freezing section includes a quick-freezing box (17), which is equipped with a multi-layer metal mesh belt (18). Agricultural products are transported in an S-shape on the multi-layer metal mesh belt (18). A first blower (20) connected to an evaporator (13) is provided at the top of the quick-freezing box (17), and a second blower (50) connected to a fixed cylinder (34) is provided at the bottom of the quick-freezing box (17).

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