Fruit and vegetable disinfection device for in-situ generation of slightly acidic electrolyzed water and its use method

Abstract

The present invention belongs to the technical field of fruit and vegetable disinfection equipment, and in particular relates to a fruit and vegetable disinfection treatment device for in-situ generation of slightly acidic electrolyzed water and a method for using the device. The device comprises: a material box; a roller conveyor device, wherein a liftable material blocking component is provided between the roller conveyor device and the material box; a conveyor belt, wherein a feed end is connected to a discharge end of the roller conveyor device; a cleaning nozzle, wherein the cleaning nozzle is used to clean mud and sand on the surface of fruits and vegetables; a slightly acidic water-alkaline water injection component, wherein a spray end is located directly above the roller conveyor device; a liquid recovery and filtration component, wherein liquid generated after spraying by the cleaning nozzle and the slightly acidic water-alkaline water injection component enters the liquid recovery and filtration component for filtration; a slightly acidic water preparation component, wherein a liquid outlet end is connected to the slightly acidic water-alkaline water injection component, a liquid inlet end of the slightly acidic water preparation component is connected to a liquid outlet end of the liquid recovery and filtration component, and the liquid recovery and filtration component filters the recovered liquid and then passes it into the slightly acidic water preparation component for slightly acidic water preparation.

Description

Technical Field

[0001] The present invention belongs to the technical field of fruit and vegetable disinfection equipment, and in particular relates to a fruit and vegetable disinfection treatment device for in-situ generation of slightly acidic electrolyzed water and a use method thereof. Background Art

[0002] The technology for electrolyzing and oxidizing chloride ion solutions to generate sterilizing water is widely known. The slightly acidic electrolyzed water produced by electrolysis can effectively eliminate microorganisms on the surfaces of fruits and vegetables. Due to its strong disinfecting ability, minimal harm to the human body, and low production cost, slightly acidic electrolyzed water is widely used to disinfect fruits and vegetables.

[0003] Before fruits and vegetables are harvested and sold, their surfaces need to be rinsed, cleaned, and disinfected. Existing technology typically uses slightly acidic electrolyzed water to clean fruits and vegetables. However, there is currently a lack of equipment that can simultaneously produce slightly acidic water and clean fruits and vegetables. Therefore, there is an urgent need for a fruit and vegetable disinfection treatment device and method for generating slightly acidic electrolyzed water in situ. Summary of the Invention

[0004] The purpose of the present invention is to provide a fruit and vegetable disinfection treatment device and a method for using the device for generating slightly acidic electrolyzed water in situ, so as to solve the above problems.

[0005] To achieve the above object, the present invention provides the following solutions:

[0006] The fruit and vegetable disinfection treatment device for in-situ generation of slightly acidic electrolyzed water comprises:

[0007] Material boxes;

[0008] A roller conveyor device, the feed end of which is connected to the discharge end of the material box, and a liftable material blocking assembly is provided between the roller conveyor device and the material box;

[0009] a conveyor belt, the feed end of which is in communication with the discharge end of the roller conveyor device;

[0010] A cleaning nozzle, the spray end of which is located between the roller conveyor and the material box, and is used to clean the mud and sand on the surface of fruits and vegetables;

[0011] A slightly acidic water-alkaline water spray assembly, the spray end of which is located just above the roller conveyor device and is used for disinfecting fruits and vegetables during movement;

[0012] The liquid recovery and filtration component has a liquid inlet end located just below the roller conveyor device, and the liquid generated after spraying by the cleaning nozzle and the slightly acidic water-alkaline water spraying component enters the liquid recovery and filtration component for filtration;

[0013] The slightly acidic water preparation component has a liquid outlet connected to the slightly acidic water-alkaline water injection component, and a liquid inlet connected to the liquid outlet of the liquid recovery and filtration component. The liquid recovery and filtration component filters the recovered liquid and then passes it into the slightly acidic water preparation component for slightly acidic water preparation.

[0014] Optionally, the roller conveying device is connected to the material box through a feeding slope, the material box is connected and arranged at the high end of the feeding slope, the roller conveying device is connected and arranged at the low end of the feeding slope, a gap is provided between the roller conveying device and the low end of the feeding slope, the injection end of the cleaning nozzle is located between the roller conveying device and the low end of the feeding slope, and the material blocking assembly is set directly above the feeding slope by a lifting rod.

[0015] Optionally, the material blocking assembly includes:

[0016] An inclined plate, wherein one end of the inclined plate is fixedly connected to a first baffle plate, and the other end of the inclined plate is fixedly connected to a second baffle plate;

[0017] The second baffle is used to control the opening and closing of the discharge end of the material box;

[0018] The baffle 1 is used to control the opening and closing of the feed end of the roller conveyor device.

[0019] The lifting rod causes the baffle 1 and the baffle 2 to rise through the inclined plate, and the fruits and vegetables are moved out of the material box and roll along the feeding slope. The lifting rod causes the baffle 1 and the baffle 2 to fall through the inclined plate, so that the fruits and vegetables stay in the gap between the roller conveyor device and the feeding slope and roll. At the same time, the spray end of the cleaning nozzle rinses the fruits and vegetables. The baffle 1 and the baffle 2 are lifted again, and the fruits and vegetables located in the gap move toward the roller conveyor device. The fruits and vegetables located in the material box slide along the feeding slope. After the baffle 1 and the baffle 2 are lowered, the fruits and vegetables on the feeding slope enter the gap.

[0020] Optionally, the liquid recovery filter assembly includes:

[0021] an open water tank located directly below the roller conveyor;

[0022] A sedimentation area, a sediment filtration area, a water purification area, a liquid distribution area and a water storage area are sequentially connected along the liquid flow direction in the open water tank;

[0023] The sedimentation area is located directly below the spray end of the cleaning nozzle, and the muddy water generated by the spray end of the cleaning nozzle after washing the fruits and vegetables falls into the sedimentation area;

[0024] A filtering portion is provided in the sediment filtering area;

[0025] An RO membrane filter and a water pump are provided in the water purification area, the liquid inlet of the water pump is communicated with the water purification area, the liquid outlet of the water pump is communicated with the liquid inlet of the RO membrane filter, the clean water outlet of the RO membrane filter is communicated with the liquid distribution area, and the wastewater outlet of the RO membrane filter produces wastewater for heat dissipation of the slightly acidic water preparation component;

[0026] The liquid distribution area is provided with a concentration sensor and a stirring part;

[0027] The stirring part is a stirring shaft, and the stirring shaft is rotatably arranged on the inner wall of the liquid distribution area;

[0028] A second water pump is provided in the water storage area, the liquid inlet end of the second water pump is communicated with the water storage area, and the liquid outlet end of the second water pump is communicated with the slightly acidic water preparation component.

[0029] Optionally, the sedimentation zone and the sediment filtration zone, as well as the sediment filtration zone and the water purification zone, are separated by overflow baffles, and the liquid in the sedimentation zone / the sediment filtration zone flows over the top of the overflow baffle and enters the sediment filtration zone / the water purification zone;

[0030] The water purification area and the liquid preparation area are separated by a baffle;

[0031] The liquid distribution area and the water storage area are separated by another overflow baffle, and the liquid in the liquid distribution area flows over the top of the overflow baffle and then enters the water storage area.

[0032] Optionally, the filter part includes a filter element, which is installed in the sediment filtration area. The filter element is connected to the sediment filtration area, and a T-shaped pressure plate is fixed to the top of the filter element. A protrusion is provided in the middle of the T-shaped pressure plate, and the top surface of the protrusion in the middle of the T-shaped pressure plate is coplanar with the top surface of the open water tank.

[0033] Optionally, the slightly acidic water preparation component includes:

[0034] A water storage tank, the liquid inlet end of which is connected to the liquid outlet end of the second water pump, and the water storage tank is fixed above the roller conveying device through a crossbeam;

[0035] The liquid inlet of the electrolytic cell assembly is communicated with the liquid outlet of the water storage tank, and the liquid outlet of the electrolytic cell assembly is communicated with the liquid inlet of the slightly acidic water-alkaline water injection assembly.

[0036] Optionally, the electrolytic cell assembly includes:

[0037] An electrolytic cell, wherein a diaphragm is fixedly connected to the middle of the electrolytic cell, the diaphragm divides the electrolytic cell into an acid water generation area and an alkaline water generation area, electrodes are inserted into the acid water generation area and the alkaline water generation area, the electrodes in the acid water generation area are electrically connected to the anode of the power supply, and the electrodes in the alkaline water generation area are electrically connected to the cathode of the power supply, and the acid water generation area and the alkaline water generation area are both connected to the liquid outlet of the water storage tank; the liquid outlet of the acid water generation area is connected to the acid liquid inlet of the slightly acidic water-alkaline water injection assembly, and the liquid outlet of the alkaline water generation area is connected to the alkaline liquid inlet of the slightly acidic water-alkaline water injection assembly;

[0038] A cooling box is wrapped around the outside of the electrolytic cell, the cooling box is heat exchanged with the electrolytic cell, the cooling box is connected to the wastewater outlet of the RO membrane filter, and the liquid outlet of the cooling box is connected to the liquid inlet of the wastewater recovery tank through a water pump.

[0039] Optionally, the slightly acidic water-alkaline water spraying assembly includes:

[0040] an acid liquid nozzle, connected to the acid water generating area via a water pump 4;

[0041] an alkali solution nozzle, connected to the alkali water production area via a water pump 5;

[0042] The alkali solution nozzle is located on the side close to the feeding slope.

[0043] A method for using a fruit and vegetable disinfection treatment device, using the above-mentioned fruit and vegetable disinfection treatment device for in-situ generation of slightly acidic electrolyzed water, comprises the following steps:

[0044] Putting fruits and vegetables into the material box, and starting the roller conveying device, the conveyor belt and the slightly acidic water preparation component;

[0045] The fruits and vegetables move in sequence along the material box, the roller conveyor device and the conveyor belt. After the dust on the surface of the fruits and vegetables is washed away by the cleaning nozzle, the slightly acidic water-alkaline water spraying assembly sprays alkaline water and acid water on the surface of the fruits and vegetables in sequence. The alkaline water is used to eliminate pesticide residues on the surface of the fruits and vegetables, and the acid water is used to neutralize the alkaline water on the surface of the fruits and vegetables to form slightly acidic water to disinfect and sterilize the surface of the fruits and vegetables.

[0046] Compared with the prior art, the present invention has the following advantages and technical effects:

[0047] During use, fruits and vegetables are placed in the material box, and the roller conveyor device, conveyor belt and slightly acidic water preparation component are started; the fruits and vegetables move in sequence along the material box, roller conveyor device and conveyor belt, and the dust on the surface of the fruits and vegetables is washed clean by the cleaning nozzle. Then, the slightly acidic water-alkaline water spray component sprays alkaline water and acid water on the surface of the fruits and vegetables in turn. The alkaline water is used to eliminate pesticide residues on the surface of fruits and vegetables, and the acid water is used to neutralize with the alkaline water on the surface of fruits and vegetables to form slightly acidic water for disinfecting and sterilizing the surface of fruits and vegetables. This device can use a saturated sodium chloride solution with a configured concentration for electrolysis and cleaning dust on the surface of fruits and vegetables at the same time. The wastewater generated can be recycled after being treated by the liquid recovery and filtration component. The alkaline water generated by electrolysis can clean and decompose pesticide residues on the surface of fruits and vegetables. At the same time, the slightly acidic water formed by the subsequent neutralization of the acid water and alkaline water can effectively kill pathogens on the surface of fruits and vegetables, and has a good effect on the disinfection and preservation of fruits and vegetables. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. Those skilled in the art can also derive other drawings based on these drawings without inventive work.

[0049] Figure 1 It is a schematic diagram of the structure of the present invention;

[0050] Figure 2 This is a schematic structural diagram of the liquid recovery and filtration assembly of the present invention;

[0051] Figure 3 This is a schematic structural diagram of the electrolytic cell assembly of the present invention;

[0052] Figure 4 This is a schematic structural diagram of the material blocking assembly of the present invention;

[0053] Figure 5 This is a schematic diagram of the T-shaped pressure plate structure of the present invention;

[0054] Among them: 1. Material box; 2. Feed ramp; 3. Beam; 4. Lifting rod; 5. Roller conveyor; 6. Cleaning nozzle; 7. Liquid recovery filter assembly; 8. Conveyor belt; 9. Water storage tank; 10. Electrolytic cell assembly; 11. Alkali solution nozzle; 12. Acid solution nozzle; 13. Wastewater recovery tank; 14. Material retaining assembly; 701. Open water tank; 702. Sedimentation area; 703. Overflow baffle; 704. Filter element; 705. T-type pressure plate; 706. Baffle; 707. RO membrane filter 708, water pump 1; 709, stirring shaft; 710, concentration sensor; 711, water pump 2; 712, sediment filtration area; 713, water purification area; 714, liquid distribution area; 715, water storage area; 1001, electrolytic cell; 1002, diaphragm; 1003, power supply; 1004, electrode; 1005, water pump 3; 1006, water pump 4; 1007, water pump 5; 1008, cooling box; 1401, inclined plate; 1402, baffle 1; 1403, baffle 2. DETAILED DESCRIPTION

[0055] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0056] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0057] Reference Figures 1 to 5 The present invention discloses a fruit and vegetable disinfection treatment device for in-situ generation of slightly acidic electrolyzed water, comprising:

[0058] Material box 1;

[0059] The roller conveyor device 5 has a feeding end connected to the discharging end of the material box 1, and a lifting and lowering material blocking component 14 is provided between the roller conveyor device 5 and the material box 1;

[0060] The conveyor belt 8 has a feed end connected to the discharge end of the roller conveyor device 5;

[0061] The cleaning nozzle 6, the spraying end of which is located between the roller conveyor 5 and the material box 1, is used to clean the mud and sand on the surface of fruits and vegetables;

[0062] A slightly acidic water-alkaline water spray assembly, the spray end of which is located just above the roller conveyor 5 and is used to disinfect fruits and vegetables during movement;

[0063] The liquid recovery filter assembly 7 has a liquid inlet end located just below the roller conveyor 5. The liquid generated after the cleaning nozzle 6 and the slightly acidic water-alkaline water spray assembly sprays enters the liquid recovery filter assembly 7 for filtration;

[0064] The slightly acidic water preparation component has a liquid outlet connected to the slightly acidic water-alkaline water injection component, and a liquid inlet connected to the liquid outlet of the liquid recovery filter component 7. The liquid recovery filter component 7 filters the recovered liquid and then passes it into the slightly acidic water preparation component for slightly acidic water preparation.

[0065] During use, fruits and vegetables are placed in the material box 1, and the roller conveyor device 5, the conveyor belt 8 and the slightly acidic water preparation component are started; the fruits and vegetables move in sequence along the material box 1, the roller conveyor device 5 and the conveyor belt 8, and the dust on the surface of the fruits and vegetables is washed away by the cleaning nozzle 6. Then, the slightly acidic water-alkaline water spraying component sprays alkaline water and acid water on the surface of the fruits and vegetables in turn. The alkaline water is used to eliminate pesticide residues on the surface of fruits and vegetables, and the acid water is used to neutralize with the alkaline water on the surface of fruits and vegetables to form slightly acidic water for disinfecting and sterilizing the surface of fruits and vegetables. This device can use a saturated sodium chloride solution with a certain concentration for electrolysis and cleaning dust on the surface of fruits and vegetables at the same time. The wastewater generated can be recycled after being treated by the liquid recovery and filtration component 7. The alkaline water generated by electrolysis can clean and decompose agricultural residues on the surface of fruits and vegetables. At the same time, the slightly acidic water formed by the neutralization of the acid water and alkaline water sprayed subsequently can effectively kill pathogens on the surface of fruits and vegetables, and has a good effect on disinfection and preservation of fruits and vegetables.

[0066] The cleaning nozzle 6 is connected to the municipal water supply system, which can not only clean the surface of fruits and vegetables, but also supply water to the entire device.

[0067] As an optional embodiment, the roller conveying device 5 is connected to the material box 1 through the feeding ramp 2, the material box 1 is connected and arranged at the high end of the feeding ramp 2, and the roller conveying device 5 is connected and arranged at the low end of the feeding ramp 2. A gap is provided between the roller conveying device 5 and the low end of the feeding ramp 2, the spraying end of the cleaning nozzle 6 is located between the roller conveying device 5 and the low end of the feeding ramp 2, and the material blocking assembly 14 is set directly above the feeding ramp 2 by the lifting rod 4.

[0068] As an optional embodiment, the material blocking assembly 14 includes:

[0069] Inclined plate 1401, one end of the inclined plate 1401 is fixedly connected to baffle 1402, and the other end of the inclined plate 1401 is fixedly connected to baffle 2 1403;

[0070] Baffle 2 1403 is used to control the opening and closing of the discharge end of the material box 1;

[0071] Baffle 1402 is used to control the opening and closing of the feed end of the roller conveyor device 5.

[0072] The lifting rod 4 raises baffle 1 1402 and baffle 2 1403 through the inclined plate 1401, and the fruits and vegetables are moved out of the material box 1 and roll along the feeding slope 2. The lifting rod 4 lowers baffle 1 1402 and baffle 2 1403 through the inclined plate 1401, so that the fruits and vegetables stay in the gap between the roller conveyor 5 and the feeding slope 2 and roll. At the same time, the spray end of the cleaning nozzle 6 rinses the fruits and vegetables. Baffle 1 1402 and baffle 2 1403 are lifted again, and the fruits and vegetables in the gap move toward the roller conveyor 5. The fruits and vegetables in the material box 1 slide along the feeding slope 2. After baffle 1 1402 and baffle 2 1403 are lowered, the fruits and vegetables on the feeding slope 2 enter the gap.

[0073] The roller conveyor 5 is a prior art device. The roller conveyor 5 is composed of several rollers arranged side by side. During the reciprocating lifting and lowering process of baffle 1 1402 and baffle 2 1403, the discharge end of the material box 1 is intermittently opened. When the discharge end of the material box 1 is closed, the material rolled out of the material box 1 rolls along the feeding slope 2 and is blocked at the feed end of the roller conveyor 5. The rolling of the roller at the feed end of the roller conveyor 5 will drive the fruits and vegetables to roll under the action of friction. At this time, the cleaning nozzle 6 can clean the surface of the rolling fruits and vegetables, and the sewage falls into the liquid recovery filter component 7.

[0074] As a core component of modern industrial automation and logistics systems, roller conveyor equipment's structural design incorporates innovative achievements in mechanical engineering and materials science. From a basic perspective, this type of equipment consists of four main parts: a roller assembly, a drive module, a support structure, and a control system. As the core carrier, rollers can be divided into two categories, unpowered and powered, depending on the application scenario. Unpowered rollers rely on gravity or manual push to achieve material transfer, and are commonly used in light-duty operations such as fruit and vegetable sorting. Their structure is made of food-grade stainless steel or rubber-coated materials, and their surfaces are blunted to avoid damaging the fruit and vegetable skins. Powered rollers are driven by electric motors and reducers, and transmission methods include gear chains, synchronous belts, or friction drives. For example, in heavy-duty logistics scenarios, carbon steel rollers with a diameter of 89mm are often used to carry pallets. In the drive system, the accumulation roller uses a movable gear connection design. When fruits and vegetables need to be temporarily stored and sorted, the sprocket continues to operate while the roller stops rotating to form a buffer zone. This dynamic storage function effectively avoids material squeezing damage. The supporting frames are mostly made of modular aluminum profiles, which can be easily combined into straight, curved or spiral conveyor lines. Some high-end equipment is also equipped with shock absorbers and temperature control systems to ensure that temperature-sensitive fruits and vegetables such as bananas maintain stable quality during transportation.

[0075] In terms of operating principle, roller conveyors achieve efficient material flow through friction mechanics and intelligent control. In powered equipment, the torque output by the electric motor is transmitted to the roller via a reducer. The friction generated by the contact surface between the fruits and vegetables and the roller propels the material. The friction coefficient is adjusted according to the characteristics of the conveyed object. For example, a rubber-coated roller can enhance the grip of citrus fruits.

[0076] For the fruit and vegetable conveying scenario described in this invention, a specialized model that meets hygienic standards is preferred. In this embodiment, the Interroll EC5000 series DC-driven roller, featuring a modular design, is equipped with a food-grade stainless steel drum and a 55dB low-noise motor. It supports zero-pressure accumulation and is particularly suitable for the precise sorting of delicate fruits such as strawberries. The Van der Graaf™ series hygienic electric roller is IP69K certified, and its all-stainless steel construction can withstand 3000psi high-pressure washdowns.

[0077] As an optional embodiment, the liquid recovery filter assembly 7 includes:

[0078] The open water tank 701 is located directly below the roller conveyor 5;

[0079] Along the liquid flow direction in the open water tank 701, there are a sedimentation area 702, a sediment filtration area 712, a water purification area 713, a liquid distribution area 714 and a water storage area 715 connected in sequence;

[0080] The sedimentation area 702 is located directly below the spray end of the cleaning nozzle 6. After the cleaning nozzle 6 sprays the fruits and vegetables, the muddy water produced by the spray end falls into the sedimentation area 702.

[0081] A filter section is provided in the sediment filtration area 712;

[0082] An RO membrane filter 707 and a water pump 708 are provided in the water purification area 713. The liquid inlet of the water pump 708 is connected to the water purification area 713, and the liquid outlet of the water pump 708 is connected to the liquid inlet of the RO membrane filter 707. The clean water outlet of the RO membrane filter 707 is connected to the liquid distribution area 714. The wastewater outlet of the RO membrane filter 707 produces wastewater for heat dissipation of the slightly acidic water preparation component.

[0083] The liquid dispensing area 714 is provided with a concentration sensor 710 and a stirring unit;

[0084] The stirring part is a stirring shaft 709, which is rotatably arranged on the inner wall of the liquid distribution area 714;

[0085] A second water pump 711 is provided in the water storage area 715 , the liquid inlet of the second water pump 711 is connected to the water storage area 715 , and the liquid outlet of the second water pump 711 is connected to the slightly acidic water preparation component.

[0086] As an optional embodiment, the sedimentation zone 702 and the sediment filtration zone 712, as well as the sediment filtration zone 712 and the water purification zone 713, are separated by overflow baffles 703. The liquid in the sedimentation zone 702 / sediment filtration zone 712 flows over the top of the overflow baffles 703 and then enters the sediment filtration zone 712 / water purification zone 713.

[0087] The water purification area 713 and the liquid preparation area 714 are separated by a baffle 706;

[0088] The liquid distribution area 714 and the water storage area 715 are separated by another overflow baffle 703 . The liquid in the liquid distribution area 714 flows over the top of the overflow baffle 703 and then enters the water storage area 715 .

[0089] As an optional embodiment, the filter part includes a filter element 704, which is installed in the sediment filtration area 712. The filter element 704 is connected to the sediment filtration area 712. A T-shaped pressure plate 705 is fixed to the top of the filter element 704. A protrusion is provided in the middle of the T-shaped pressure plate 705. The top surface of the protrusion in the middle of the T-shaped pressure plate 705 is coplanar with the top surface of the open water tank 701.

[0090] During use, sewage falls into the sedimentation area 702 for sedimentation. After the water level rises, it overflows from the top of the overflow baffle 703 and enters the sediment filtration area 712. Since the raised top surface of the middle part of the T-shaped pressure plate 705 is coplanar with the top surface of the open water tank 701, the sewage containing sediment cannot flow directly into the water purification area 713, but is filtered through the filter element 704 before entering the water purification area 713. At the same time, the residual liquid after washing fruits and vegetables with alkaline water and acid water falls into the sediment filtration area 712 and the water purification area 713 through the gap between the rollers of the roller conveyor 5. Since the separated water does not contain sediment, it does not need to pass through the filter element 704. This part of water is sucked into the RO membrane filter 707 through the water pump 1 708. The RO membrane filter 707 can filter the water in the water purification area 713 to produce purified water and wastewater. The purified water enters the liquid distribution area 714. The staff adds an appropriate amount of sodium chloride particles according to the concentration data fed back by the concentration sensor 710, and completes the stirring under the action of the stirring shaft 709. Then this part of the saturated sodium chloride solution enters the water storage area 715 and is sucked into the water pump 2 711 and enters the slightly acidic water preparation component.

[0091] As an optional embodiment, the slightly acidic water preparation component includes:

[0092] The water tank 9, the liquid inlet end of which is connected to the liquid outlet end of the second water pump 711, is fixed above the roller conveyor 5 by the crossbeam 3;

[0093] The liquid inlet of the electrolytic cell assembly 10 is communicated with the liquid outlet of the water storage tank 9 , and the liquid outlet of the electrolytic cell assembly 10 is communicated with the liquid inlet of the slightly acidic water-alkaline water injection assembly.

[0094] As an optional embodiment, the electrolytic cell assembly 10 includes:

[0095] An electrolytic cell 1001 is provided with a diaphragm 1002 fixedly connected to the middle portion of the electrolytic cell 1001. The diaphragm 1002 separates the electrolytic cell 1001 into an acidic water generating area and an alkaline water generating area. Electrodes 1004 are inserted into both the acidic water generating area and the alkaline water generating area. The electrode 1004 in the acidic water generating area is electrically connected to the anode of a power supply 1003, and the electrode 1004 in the alkaline water generating area is electrically connected to the cathode of the power supply 1003. Both the acidic water generating area and the alkaline water generating area are in communication with a liquid outlet of a water storage tank 9; the liquid outlet of the acidic water generating area is in communication with an acid liquid inlet of a slightly acidic water-alkaline water injection assembly, and the liquid outlet of the alkaline water generating area is in communication with an alkaline liquid inlet of the slightly acidic water-alkaline water injection assembly.

[0096] The cooling box 1008 is wrapped around the outside of the electrolytic cell 1001. The cooling box 1008 is set to heat exchange with the electrolytic cell 1001. The cooling box 1008 is connected to the wastewater outlet of the RO membrane filter 707. The liquid outlet end of the cooling box 1008 is connected to the liquid inlet end of the wastewater recovery tank 13 through the water pump 3 1005.

[0097] As an optional embodiment, the slightly acidic water-alkaline water spraying assembly includes:

[0098] The acid liquid nozzle 12 is connected to the acid water generating area through the water pump 4 1006;

[0099] The alkali solution nozzle 11 is connected to the alkali water production area through the water pump 5 1007;

[0100] The alkali solution nozzle 11 is located near the side of the feeding slope 2.

[0101] The saturated sodium chloride solution enters the water storage tank 9 for storage, and is then pumped simultaneously from the water storage tank 9 to the acid water generating area and the alkaline water generating area of ​​the electrolytic cell assembly 10 through the pump body. The acid water generating area generates an acidic aqueous solution with a low concentration of available chlorine and a high redox potential through the electrode 1004 electrically connected to the anode. The alkaline water generating area generates an alkaline aqueous solution through the electrode 1004 electrically connected to the cathode. The alkaline aqueous solution is sprayed on the surface of fruits and vegetables through the alkaline solution nozzle 11, and the acidic aqueous solution is sprayed on the surface of fruits and vegetables through the acid solution nozzle 12. The alkaline aqueous solution first sprayed on the surface of fruits and vegetables can effectively remove agricultural residues on the surface of fruits and vegetables. The acidic aqueous solution then sprayed on the surface of fruits and vegetables is neutralized with the alkaline aqueous solution to form a slightly acidic solution, which sterilizes and preserves the surface of fruits and vegetables.

[0102] Since heat is generated in the acid water generating area and the alkaline water generating area during electrolysis, and the wastewater generated by the RO membrane filter 707 cannot be discharged directly because it contains a variety of harmful substances, the wastewater is passed into the cooling box 1008 so that the heat generated by electrolysis in the electrolytic cell 1001 is taken away before entering the wastewater recovery box 13, thereby maintaining the temperature of the electrolytic cell 1001. At the same time, the wastewater is collected in the wastewater recovery box 13 for convenient centralized recycling and treatment.

[0103] A method for using a fruit and vegetable disinfection treatment device, using the above-mentioned fruit and vegetable disinfection treatment device for in-situ generation of slightly acidic electrolyzed water, comprises the following steps:

[0104] Place fruits and vegetables into the material box 1, and start the roller conveyor device 5, the conveyor belt 8 and the slightly acidic water preparation component;

[0105] The fruits and vegetables move in sequence along the material box 1, the roller conveyor 5 and the conveyor belt 8. After the dust on the surface of the fruits and vegetables is washed away by the cleaning nozzle 6, the slightly acidic water-alkaline water spraying assembly sprays alkaline water and acid water on the surface of the fruits and vegetables in sequence. The alkaline water is used to eliminate pesticide residues on the surface of the fruits and vegetables, and the acid water is used to neutralize the alkaline water on the surface of the fruits and vegetables to form slightly acidic water to disinfect and sterilize the surface of the fruits and vegetables.

[0106] In the description of the present invention, it should be understood that the terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0107] The embodiments described above are merely descriptions of preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Without departing from the spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by persons skilled in the art should fall within the scope of protection defined by the claims of the present invention.

Claims

1. A fruit and vegetable disinfection device that generates slightly acidic electrolyzed water in situ, characterized in that: include: Material box (1); A roller conveying device (5), the feeding end of which is in communication with the discharging end of the material box (1), and a liftable material blocking assembly (14) is provided between the roller conveying device (5) and the material box (1); A conveyor belt (8), the feed end of which is connected to the discharge end of the roller conveyor device (5); A cleaning nozzle (6), the spray end of which is located between the roller conveying device (5) and the material box (1), and the cleaning nozzle (6) is used to clean mud and sand on the surface of fruits and vegetables; A slightly acidic water-alkaline water spray assembly, the spray end of which is located directly above the roller conveyor (5), and is used for disinfecting fruits and vegetables during movement; The liquid recovery filter assembly (7) has a liquid inlet end located directly below the roller conveying device (5), and the liquid generated by the cleaning nozzle (6) and the slightly acidic water-alkaline water spray assembly after spraying enters the liquid recovery filter assembly (7) for filtration; A slightly acidic water preparation component, wherein the liquid outlet is connected to the slightly acidic water-alkaline water injection component, the liquid inlet of the slightly acidic water preparation component is connected to the liquid outlet of the liquid recovery filter component (7), and the liquid recovery filter component (7) filters the recovered liquid and then passes it into the slightly acidic water preparation component for slightly acidic water preparation; The roller conveying device (5) is connected to the material box (1) via the feeding slope (2), the material box (1) is connected and arranged at the high end of the feeding slope (2), the roller conveying device (5) is connected and arranged at the low end of the feeding slope (2), a gap is provided between the roller conveying device (5) and the low end of the feeding slope (2), the spray end of the cleaning nozzle (6) is located between the roller conveying device (5) and the low end of the feeding slope (2), and the material blocking assembly (14) is raised and lowered by the lifting rod (4) and arranged directly above the feeding slope (2); The liquid recovery filter assembly (7) comprises: An open water tank (701) located directly below the roller conveyor device (5); A sedimentation area (702), a sediment filtration area (712), a water purification area (713), a liquid distribution area (714), and a water storage area (715) are sequentially connected along the liquid flow direction in the open water tank (701); The sedimentation area (702) is located directly below the spray end of the cleaning nozzle (6), and muddy water generated by the spray end of the cleaning nozzle (6) after washing fruits and vegetables falls into the sedimentation area (702); A filtering portion is provided in the sediment filtering area (712); The water purification area (713) is provided with an RO membrane filter (707) and a water pump (708). The liquid inlet of the water pump (708) is in communication with the water purification area (713), the liquid outlet of the water pump (708) is in communication with the liquid inlet of the RO membrane filter (707), the clean water outlet of the RO membrane filter (707) is in communication with the liquid distribution area (714), and the wastewater outlet of the RO membrane filter (707) produces wastewater for heat dissipation of the slightly acidic water preparation component. The liquid distribution area (714) is provided with a concentration sensor (710) and a stirring part; The stirring portion is a stirring shaft (709), and the stirring shaft (709) is rotatably arranged on the inner wall of the liquid distribution area (714); A second water pump (711) is provided in the water storage area (715), the liquid inlet of the second water pump (711) is in communication with the water storage area (715), and the liquid outlet of the second water pump (711) is in communication with the slightly acidic water preparation component; The sedimentation area (702) and the sediment filtration area (712), as well as the sediment filtration area (712) and the water purification area (713) are separated by overflow baffles (703), and the liquid in the sedimentation area (702) / the sediment filtration area (712) flows over the top of the overflow baffles (703) and then enters the sediment filtration area (712) / the water purification area (713); The water purification area (713) and the liquid preparation area (714) are separated by a baffle (706); The liquid distribution area (714) and the water storage area (715) are separated by another overflow baffle (703), and the liquid in the liquid distribution area (714) flows over the top of the overflow baffle (703) and then enters the water storage area (715); The filter portion comprises a filter element (704), the filter element (704) being installed in the sediment filtration area (712), the filter element (704) being connected to the sediment filtration area (712), a T-shaped pressing plate (705) being fixedly connected to the top of the filter element (704), a protrusion being provided in the middle of the T-shaped pressing plate (705), and a top surface of the protrusion in the middle of the T-shaped pressing plate (705) being coplanar with a top surface of the open water tank (701); The slightly acidic water preparation component comprises: A water storage tank (9), the liquid inlet end of which is in communication with the liquid outlet end of the second water pump (711), and the water storage tank (9) is fixed above the roller conveying device (5) via a crossbeam (3); The liquid inlet of the electrolytic cell assembly (10) is connected to the liquid outlet of the water storage tank (9), and the liquid outlet of the electrolytic cell assembly (10) is connected to the liquid inlet of the slightly acidic water-alkaline water injection assembly; The electrolytic cell assembly (10) comprises: An electrolytic cell (1001), wherein a diaphragm (1002) is fixedly connected to the middle of the electrolytic cell (1001), and the diaphragm (1002) divides the electrolytic cell (1001) into an acid water generation area and an alkaline water generation area, wherein electrodes (1004) are inserted into both the acid water generation area and the alkaline water generation area, wherein the electrodes (1004) in the acid water generation area are electrically connected to the anode of the power supply (1003), and the electrodes (1004) in the alkaline water generation area are electrically connected to the cathode of the power supply (1003), and both the acid water generation area and the alkaline water generation area are connected to the liquid outlet of the water storage tank (9); the liquid outlet of the acid water generation area is connected to the acid liquid inlet of the slightly acidic water-alkaline water injection assembly, and the liquid outlet of the alkaline water generation area is connected to the alkaline liquid inlet of the slightly acidic water-alkaline water injection assembly; A cooling box (1008) is wrapped around the outside of the electrolytic cell (1001), and the cooling box (1008) is heat exchanged with the electrolytic cell (1001). The cooling box (1008) is connected to the wastewater outlet of the RO membrane filter (707), and the liquid outlet of the cooling box (1008) is connected to the liquid inlet of the wastewater recovery tank (13) through the water pump 3 (1005).

2. The fruit and vegetable disinfection device for in-situ generation of slightly acidic electrolyzed water according to claim 1, characterized in that: The material blocking assembly (14) comprises: An inclined plate (1401), wherein one end of the inclined plate (1401) is fixedly connected to a first baffle (1402), and the other end of the inclined plate (1401) is fixedly connected to a second baffle (1403); The second baffle (1403) is used to control the opening and closing of the discharge end of the material box (1); The baffle 1 (1402) is used to control the opening and closing of the feed end of the roller conveying device (5).

3. The fruit and vegetable disinfection device for in-situ generation of slightly acidic electrolyzed water according to claim 1, characterized in that: The slightly acidic water-alkaline water injection assembly comprises: An acid liquid nozzle (12) is connected to the acid water generating area via a water pump (1006); an alkali solution nozzle (11) connected to the alkali water production area via a water pump five (1007); The alkali solution nozzle (11) is located close to the feeding slope (2).

4. A method for using a fruit and vegetable disinfection treatment device, using the fruit and vegetable disinfection treatment device for in-situ generation of slightly acidic electrolyzed water according to any one of claims 1 to 3, characterized in that: The steps include: Putting fruits and vegetables into the material box (1), and starting the roller conveying device (5), the conveyor belt (8) and the slightly acidic water preparation component; The fruits and vegetables are sequentially moved along the material box (1), the roller conveying device (5) and the conveyor belt (8). After the dust on the surface of the fruits and vegetables is washed away by the cleaning nozzle (6), alkaline water and acid water are sprayed on the surface of the fruits and vegetables in sequence by the slightly acidic water-alkaline water spraying assembly. The alkaline water is used to eliminate pesticide residues on the surface of the fruits and vegetables, and the acid water is used to neutralize the alkaline water on the surface of the fruits and vegetables to form slightly acidic water to disinfect and sterilize the surface of the fruits and vegetables.

Images