Cooling and spraying system for rapid pre-cooling and fresh-keeping of fruits and vegetables
By using a circulating spray system and multi-functional operation, the problems of poor cooling effect and low production efficiency of fruit and vegetable cooling equipment have been solved, realizing efficient cooling of fruits and vegetables and multi-step linkage, improving production efficiency and reducing labor costs.
Patent Information
- Application Number
- CN202423082160.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-13
- Publication Date
- 2025-10-31
- Estimated Expiration
- 2034-12-13
AI Technical Summary
Existing fruit and vegetable cooling spraying equipment has limited functionality, poor cooling effect, low production efficiency, unstable spray water temperature, and is prone to damaging fruits and vegetables. Furthermore, it is difficult to coordinate with the pre-coating of preservatives and waxing steps.
The system employs a circulating spray system, combined with a heat exchanger and a refrigerant system. Through the control of water pumps and solenoid valves, it achieves precise temperature control and recycling of the spray water. Preservatives and liquid edible wax are added during the spraying process, and combined with ultraviolet sterilization lamps, it achieves multi-functional operation.
It improves the cooling effect of fruits and vegetables, ensures the stability of spray water temperature, reduces fruit and vegetable damage, increases production efficiency and reduces labor costs, and realizes the linkage operation of washing, pre-cooling, disinfection, preservation and waxing.
Smart Images
Figure CN223489095U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of cooling spray technology, specifically relating to a cooling spray system for rapid pre-cooling and preservation of fruits and vegetables. Background Technology
[0002] Before being stored, fruits and vegetables need to undergo sorting, washing, pre-coating with preservatives, waxing, and pre-cooling. Cooling spraying of fruits and vegetables is a pre-cooling and preservation technology. It mainly involves spraying cold water onto the surface of freshly picked fruits and vegetables, using the contact between the cold water and the fruits and vegetables to exchange heat, thereby achieving the purpose of cooling.
[0003] Existing equipment uses water from a tank to spray water through spray pipes for cooling fruits and vegetables. Because the water is added to the tank all at once and flows through a long pipeline, the water gradually exchanges heat with the environment during the cooling process. As the spraying time increases, the water temperature rises, reducing the cooling effect and failing to achieve the goal of pre-cooling and preserving the fruits and vegetables. Furthermore, the equipment is inefficient because it requires frequent refills to maintain continuous operation. The high water pressure from the spray pipes can damage thin-skinned, soft fruits and vegetables. Also, the high pressure causes splashing, and since fruits and vegetables are typically stacked in baskets or on racks, those at the bottom are difficult to cool thoroughly. However, due to structural defects, the existing equipment can only achieve a single cooling spray function, making it difficult to link with subsequent steps such as pre-coating preservatives and waxing, resulting in very low production efficiency and high labor costs. Utility Model Content
[0004] The purpose of this invention is to provide a cooling spray system for rapid pre-cooling and preservation of fruits and vegetables, solving the problems of existing equipment having single function, low production efficiency, and poor spray cooling effect.
[0005] The technical solution adopted in this utility model is as follows:
[0006] A cooling spray system for rapid pre-cooling and preservation of fruits and vegetables includes a support frame, a water tank at the bottom of the support frame, a storage mesh above the water tank, an equipment compartment next to the water tank, a water pump and a heat exchanger installed at the bottom of the equipment compartment, an outlet pipe connected to the water tank, the other end of the outlet pipe connected to the water pump, a liquid inlet pipe connected to the heat exchanger connected to the water pump, a circulation pipe connected to the heat exchanger, the other end of the circulation pipe connected to the water tank, a water inlet pipe connected to the circulation pipe, a solenoid valve installed on both the circulation pipe and the water inlet pipe, a refrigerant input pipe and a refrigerant output pipe connected to the heat exchanger, the refrigerant input pipe and the refrigerant output pipe connected to a refrigeration unit, a water supply pipe connected to the water tank, a temperature sensor installed inside the water tank, and a control panel, wherein the temperature sensor, the refrigeration unit, the solenoid valve, and the control panel are electrically connected.
[0007] A water supply square pipe is horizontally arranged at the top of the support frame. Several connecting holes are opened on both sides of the water supply square pipe along its length. A water outlet square pipe is connected to the connecting holes. The water outlet square pipe is arranged perpendicular to the water supply square pipe. Several water outlet holes are opened on the lower surface of the water outlet square pipe along its length. A water distribution plate is arranged on the support frame below the water outlet square pipe. Several water outlets are opened on the water distribution plate and are evenly distributed in an array on the water distribution plate. One end of the water supply square pipe is connected to the water inlet pipe, and a sealing plate is provided at the other end of the water supply square pipe.
[0008] Furthermore, a filter is installed at the end of the water outlet pipe near the water pump.
[0009] Furthermore, a water filter box is provided below the storage mesh plate, the bottom plate of the water filter box is inclined, and filter holes are provided on the bottom plate.
[0010] Furthermore, the heat exchanger is a plate heat exchanger.
[0011] Furthermore, the refrigeration unit includes a compressor, a condenser, and a heat exchange plate.
[0012] Furthermore, both ends of the water conveying square pipe are fixed to the support frame via connecting seats.
[0013] Furthermore, the connecting seat includes a fixing plate installed on the water supply square pipe, with connecting plates installed at both ends of the fixing plate, and the mounting blocks of the connecting plates are installed on the support frame.
[0014] Furthermore, a square positioning plate is provided at the connection between the water inlet pipe and the water delivery square pipe, and the square positioning plate is adapted to the water delivery square pipe.
[0015] Furthermore, a preservative adder and a liquid edible wax adder are installed next to the water tank.
[0016] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:
[0017] 1. In this utility model, spray water is introduced into the water tank through a water supply pipe until the water level reaches the maximum level, at which point the water supply stops. During the water supply process, when the spray water in the tank reaches the minimum level, the spray water circulation mode is activated. The water pump starts, and the spray water in the tank is discharged from the outlet pipe and enters the heat exchanger through the heat exchanger inlet pipe. Simultaneously, the chiller unit starts, allowing the refrigerant to exchange heat with the spray water in the heat exchanger, reducing the spray water temperature and cooling it. The spray water then flows out of the heat exchanger and returns to the water tank through the circulation pipe. After multiple cycles, the spray water temperature gradually decreases. When the temperature sensor detects that the spray water temperature has cooled to the preset temperature value, the spray mode can be activated. The forklift places the fruits and vegetables to be pre-cooled on the storage rack, and the control panel closes the solenoid valve of the circulation pipe. When the solenoid valve of the water pipe is opened, the spray water flows out of the heat exchanger and into the inlet pipe, then into the subsequent water delivery square pipe. The spray water then flows from the water delivery square pipe into the outlet square pipe and out through the outlet hole into the water distribution plate, achieving the first-stage diversion of the spray water. The spray water then exits from the outlet on the water distribution plate, achieving the second-stage diversion of the spray water. Through the two-stage diversion, the water flow is evenly distributed to spray and cool the fruits and vegetables below the water distribution plate, ensuring that the fruits and vegetables below are evenly watered and guaranteeing the spray cooling effect. At the same time, the spray water is discharged at a lower flow rate through the outlet, which can reduce the rebound and splashing of the spray water. The spray water is easier to flow in the gaps between the stacked fruits and vegetables, so that all the stacked fruits and vegetables can be sprayed and cooled. It can also avoid the situation where the water pressure is too high when spraying spray water directly from the traditional spray pipe, causing the fruits and vegetables to be damaged. Furthermore, the continuous operation of the water pump draws water from the tank into the heat exchanger for heat exchange, ensuring the water temperature remains at the preset value. This precise temperature control guarantees effective cooling of fruits and vegetables, and the recyclable water further enhances the system's efficiency. Before pre-cooling the fruits and vegetables, preservatives and liquid edible wax can be added to the tank during the water circulation mode, and ultraviolet sterilization lamps are installed in the equipment compartment. This allows for a one-time completion of washing, pre-cooling, disinfection, preservation, and waxing during the cooling spray, significantly improving production efficiency and reducing labor costs. This effectively solves the problems of limited functionality, low production efficiency, and poor cooling effect of existing equipment.
[0018] 2. In this utility model, a water filter box is provided below the storage mesh plate. The bottom plate of the water filter box is inclined and has filter holes for filtering large particles of impurities. A filter is installed on the water outlet pipe for filtering small particles of impurities. The secondary filtration method ensures that each component can operate stably and efficiently during the spray water circulation. Attached Figure Description
[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort, wherein:
[0020] Figure 1 This is a schematic diagram of the structure of this utility model;
[0021] Figure 2 This is a first internal schematic diagram of the present invention;
[0022] Figure 3 This is a second internal schematic diagram of the present invention;
[0023] Figure 4 This is a first schematic diagram of the equipment compartment of this utility model;
[0024] Figure 5 This is a second schematic diagram of the equipment compartment of this utility model;
[0025] Figure 6 This is a schematic diagram of the structure of the connector of this utility model;
[0026] Figure 7 This is a schematic diagram of the structure of the water inlet pipe of this utility model;
[0027] Figure 8 This is a schematic diagram showing the connection between the water inlet pipe and the water delivery square pipe of this utility model;
[0028] Figure 9 This is a schematic diagram of the water conveying square pipe of this utility model;
[0029] Figure 10 This is a schematic diagram of the structure of the water filter box of this utility model;
[0030] The diagram shows the following components: 1-Support frame, 2-Shelf plate, 3-Outlet square pipe, 4-Water distribution plate, 41-Outlet, 5-Inlet pipe, 6-Connecting seat, 61-Fixing plate, 62-Connecting plate, 63-Mounting block, 7-Square positioning plate, 8-Water tank, 9-Solenoid valve, 10-Refrigerant input pipe, 11-Refrigerant output pipe, 12-Refrigeration unit, 121-Compressor, 122-Condenser, 123-Heat exchange plate, 13-Water supply pipe, 14-Filter, 15-Equipment compartment, 16-Water pump, 17-Heat exchanger, 18-Outlet pipe, 19-Heat exchanger inlet pipe, 20-Circulation pipe, 21-Water supply square pipe, 211-Connecting hole, 22-Filter box, 221-Base plate, 222-Filter hole. Detailed Implementation
[0031] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0032] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.
[0033] It should be noted that the labels and letters in the following figures represent similar items, therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0034] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use. They are merely for the purpose of simplifying the description of 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. Furthermore, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0035] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.
[0036] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0037] A cooling spray system for rapid pre-cooling and preservation of fruits and vegetables includes a support frame, a water tank at the bottom of the support frame, a storage mesh above the water tank, an equipment compartment next to the water tank, a water pump and a heat exchanger installed at the bottom of the equipment compartment, an outlet pipe connected to the water tank, the other end of the outlet pipe connected to the water pump, a liquid inlet pipe connected to the heat exchanger connected to the water pump, a circulation pipe connected to the heat exchanger, the other end of the circulation pipe connected to the water tank, a water inlet pipe connected to the circulation pipe, a solenoid valve installed on both the circulation pipe and the water inlet pipe, a refrigerant input pipe and a refrigerant output pipe connected to the heat exchanger, the refrigerant input pipe and the refrigerant output pipe connected to a refrigeration unit, a water supply pipe connected to the water tank, a temperature sensor installed inside the water tank, and a control panel, wherein the temperature sensor, the refrigeration unit, the solenoid valve, and the control panel are electrically connected.
[0038] A water supply square pipe is horizontally arranged at the top of the support frame. Several connecting holes are opened on both sides of the water supply square pipe along its length. A water outlet square pipe is connected to the connecting holes. The water outlet square pipe is arranged perpendicular to the water supply square pipe. Several water outlet holes are opened on the lower surface of the water outlet square pipe along its length. A water distribution plate is arranged on the support frame below the water outlet square pipe. Several water outlets are opened on the water distribution plate and are evenly distributed in an array on the water distribution plate. One end of the water supply square pipe is connected to the water inlet pipe, and a sealing plate is provided at the other end of the water supply square pipe.
[0039] Furthermore, a filter is installed at the end of the water outlet pipe near the water pump.
[0040] Furthermore, a water filter box is provided below the storage mesh plate, the bottom plate of the water filter box is inclined, and filter holes are provided on the bottom plate.
[0041] Furthermore, the heat exchanger is a plate heat exchanger.
[0042] Furthermore, the refrigeration unit includes a compressor, a condenser, and a heat exchange plate.
[0043] Furthermore, both ends of the water conveying square pipe are fixed to the support frame via connecting seats.
[0044] Furthermore, the connecting seat includes a fixing plate installed on the water supply square pipe, with connecting plates installed at both ends of the fixing plate, and the mounting blocks of the connecting plates are installed on the support frame.
[0045] Furthermore, a square positioning plate is provided at the connection between the water inlet pipe and the water delivery square pipe, and the square positioning plate is adapted to the water delivery square pipe.
[0046] Furthermore, a preservative adder and a liquid edible wax adder are installed next to the water tank.
[0047] In the implementation of this invention, spray water is introduced into the water tank through a water supply pipe until the water level reaches the maximum line, at which point the water supply stops. During the water supply process, when the spray water in the tank reaches the minimum line, the spray water circulation mode is activated. The water pump starts, and the spray water in the tank is discharged from the outlet pipe and enters the heat exchanger through the heat exchanger inlet pipe. Simultaneously, the chiller unit starts, allowing the refrigerant to exchange heat with the spray water in the heat exchanger, reducing the spray water temperature and cooling it down. The spray water then flows out of the heat exchanger and returns to the water tank through the circulation pipe. After multiple cycles, the spray water temperature gradually decreases. When the temperature sensor detects that the spray water temperature has cooled to the preset value, the spray mode can be activated. A forklift places the fruits and vegetables to be pre-cooled on the storage rack, and the control panel closes the solenoid valve of the circulation pipe. When the solenoid valve of the inlet pipe is opened, the spray water flows out of the heat exchanger and into the inlet pipe, then into the subsequent water delivery square pipe. The spray water flows from the water delivery square pipe into the outlet square pipe and is discharged through the outlet hole into the water distribution plate, realizing the first-stage diversion of the spray water. The spray water is then discharged from the outlet on the water distribution plate, realizing the second-stage diversion of the spray water. Through the two-stage diversion, the water flow is evenly distributed to spray and cool the fruits and vegetables below the water distribution plate, ensuring that the fruits and vegetables below can be evenly sprayed with water, thus ensuring the spray cooling effect of the fruits and vegetables. At the same time, the spray water is discharged at a lower flow rate through the outlet, which can reduce the rebound and splashing of the spray water. The spray water is easier to flow in the gaps between the stacked fruits and vegetables, so that all the stacked fruits and vegetables can be sprayed and cooled. It can also avoid the situation where the water pressure is too high when spraying spray water directly from the traditional spray pipe, causing the fruits and vegetables to be damaged. Furthermore, the continuous operation of the water pump draws water from the tank into the heat exchanger for heat exchange, ensuring the water temperature remains at the preset value. This precise temperature control guarantees effective cooling of fruits and vegetables, and the recyclable water further enhances the system's efficiency. Before pre-cooling the fruits and vegetables, preservatives and liquid edible wax can be added to the tank during the water circulation mode, and ultraviolet sterilization lamps are installed in the equipment compartment. This allows for a one-time completion of washing, pre-cooling, disinfection, preservation, and waxing during the cooling spray, significantly improving production efficiency and reducing labor costs. This effectively solves the problems of limited functionality, low production efficiency, and poor cooling effect of existing equipment.
[0048] Specifically, a water filter box is installed below the storage mesh plate. The bottom plate of the water filter box is inclined and has filter holes for filtering large particles of impurities. A filter is installed on the water outlet pipe for filtering small particles of impurities. Through secondary filtration, the components can operate stably and efficiently during the circulation of spray water.
[0049] Example 1
[0050] A cooling spray system for rapid pre-cooling and preservation of fruits and vegetables includes a support frame, a water tank at the bottom of the support frame, a storage mesh above the water tank, an equipment compartment next to the water tank, a water pump and a heat exchanger installed at the bottom of the equipment compartment, an outlet pipe connected to the water tank, the other end of the outlet pipe connected to the water pump, a liquid inlet pipe connected to the heat exchanger connected to the water pump, a circulation pipe connected to the heat exchanger, the other end of the circulation pipe connected to the water tank, a water inlet pipe connected to the circulation pipe, a solenoid valve installed on both the circulation pipe and the water inlet pipe, a refrigerant input pipe and a refrigerant output pipe connected to the heat exchanger, the refrigerant input pipe and the refrigerant output pipe connected to a refrigeration unit, a water supply pipe connected to the water tank, a temperature sensor installed inside the water tank, and a control panel, wherein the temperature sensor, the refrigeration unit, the solenoid valve, and the control panel are electrically connected.
[0051] A water supply square pipe is horizontally arranged at the top of the support frame. Several connecting holes are opened on both sides of the water supply square pipe along its length. A water outlet square pipe is connected to the connecting holes. The water outlet square pipe is arranged perpendicular to the water supply square pipe. Several water outlet holes are opened on the lower surface of the water outlet square pipe along its length. A water distribution plate is arranged on the support frame below the water outlet square pipe. Several water outlets are opened on the water distribution plate and are evenly distributed in an array on the water distribution plate. One end of the water supply square pipe is connected to the water inlet pipe, and a sealing plate is provided at the other end of the water supply square pipe.
[0052] Example 2
[0053] Based on Example 1, a filter is installed at the end of the water outlet pipe near the water pump.
[0054] Example 3
[0055] Based on the above embodiments, a water filter box is provided below the storage mesh plate, the bottom plate of the water filter box is inclined, and filter holes are provided on the bottom plate.
[0056] Example 4
[0057] Based on the above embodiments, the heat exchanger is a plate heat exchanger.
[0058] Example 5
[0059] Based on the above embodiments, the refrigeration unit includes a compressor, a condenser, and a heat exchange plate.
[0060] Example 6
[0061] Based on the above embodiments, both ends of the water conveying square pipe are fixed to the support frame via connecting seats.
[0062] Example 7
[0063] Based on the above embodiments, the connecting seat includes a fixing plate installed on the water supply square pipe, connecting plates are installed at both ends of the fixing plate, and the mounting blocks of the connecting plates are installed on the support frame.
[0064] Example 8
[0065] Based on the above embodiments, a square positioning plate is provided at the connection between the water inlet pipe and the water delivery square pipe, and the square positioning plate is adapted to the water delivery square pipe.
[0066] Example 9
[0067] Based on the above embodiments, a preservative adder and a liquid edible wax adder are installed next to the water tank.
[0068] The above description constitutes an embodiment of this utility model. The foregoing descriptions are preferred embodiments of this utility model. Unless there is a clear contradiction between the preferred embodiments or a prerequisite for a particular preferred embodiment, the preferred embodiments can be arbitrarily combined and used. The embodiments and specific parameters described are merely for clearly illustrating the verification process of the utility model and are not intended to limit the patent protection scope of this utility model. The patent protection scope of this utility model is still determined by its claims. Similarly, any equivalent structural changes made based on the description and drawings of this utility model should also be included within the protection scope of this utility model.
Claims
1. A cooling spray system for rapid pre-cooling and preservation of fruits and vegetables, characterized in that, The system includes a support frame (1), a water tank (8) at the bottom of the support frame (1), a storage mesh (2) above the water tank (8), an equipment compartment (15) next to the water tank (8), a water pump (16) and a heat exchanger (17) installed at the bottom of the equipment compartment (15), a water outlet pipe (18) connected to the water tank (8), the other end of the water outlet pipe (18) connected to the water pump (16), a heat exchanger inlet pipe (19) connected to the water pump (16), the heat exchanger inlet pipe (19) connected to the heat exchanger (17), and a circulation pipe (20) connected to the heat exchanger (17). The other end of the pipe (20) is connected to the water tank (8). The circulation pipe (20) is connected to the water inlet pipe (5). Solenoid valves (9) are installed on both the circulation pipe (20) and the water inlet pipe (5). The heat exchanger (17) is also connected to the refrigerant input pipe (10) and the refrigerant output pipe (11). The refrigerant input pipe (10) and the refrigerant output pipe (11) are connected to the chiller assembly (12). The water tank (8) is also connected to the water supply pipe (13). A temperature probe is installed in the water tank (8). A control panel is also provided. The temperature probe, the chiller assembly (12), the solenoid valve (9) are electrically connected to the control panel. A water supply square pipe (21) is horizontally arranged on the top of the support frame (1). Several connecting holes (211) are opened on both sides of the water supply square pipe (21) along the length direction of the water supply square pipe (21). A water outlet square pipe (3) is connected to the connecting holes (211). The water outlet square pipe (3) is arranged perpendicularly to the water supply square pipe (21). Several water outlet holes are opened on the lower surface of the water outlet square pipe (3) along the length direction of the water outlet square pipe (3). A water distribution plate (4) is arranged on the support frame (1) below the water outlet square pipe (3). Several water outlets (41) are opened on the water distribution plate (4). The water outlets (41) are evenly distributed in an array on the water distribution plate (4). One end of the water supply square pipe (21) is connected to the water inlet pipe (5). A sealing plate is arranged on the other end of the water supply square pipe (21).
2. A cooling spray system for rapid pre-cooling and preservation of fruits and vegetables according to claim 1, characterized in that, A filter (14) is installed at the end of the water outlet pipe (18) near the water pump (16).
3. A cooling spray system for rapid pre-cooling and preservation of fruits and vegetables according to claim 1 or 2, characterized in that, A water filter box (22) is provided below the storage mesh plate (2). The bottom plate (221) of the water filter box (22) is inclined and a filter hole (222) is provided on the bottom plate (221).
4. A cooling spray system for rapid pre-cooling and preservation of fruits and vegetables according to claim 1, characterized in that, The heat exchanger (17) is a plate heat exchanger.
5. A cooling spray system for rapid pre-cooling and preservation of fruits and vegetables according to claim 1, characterized in that, The refrigeration unit (12) includes a compressor (121), a condenser (122), and a heat exchange plate (123).
6. A cooling spray system for rapid pre-cooling and preservation of fruits and vegetables according to claim 1, characterized in that, The two ends of the water conveying square pipe (21) are fixed to the support frame (1) by connecting seats (6).
7. A cooling spray system for rapid pre-cooling and preservation of fruits and vegetables according to claim 6, characterized in that, The connecting seat (6) includes a fixing plate (61) installed on the water supply square pipe (21), and connecting plates (62) are installed at both ends of the fixing plate (61). The mounting blocks (63) of the connecting plates (62) are installed on the support frame (1).
8. A cooling spray system for rapid pre-cooling and preservation of fruits and vegetables according to claim 1, characterized in that, A square positioning plate (7) is provided at the connection between the water inlet pipe (5) and the water delivery square pipe (21), and the square positioning plate (7) is adapted to the water delivery square pipe (21).
9. A cooling spray system for rapid pre-cooling and preservation of fruits and vegetables according to claim 1, characterized in that, A preservative adder and a liquid edible wax adder are installed next to the water tank (8).