Tray-type article cleaning apparatus

Abstract

The present application discloses a kind of tray class object cleaning equipment, to solve the problem of secondary pollution in existing cleaning technology, high energy consumption and big biological safety risk.It includes frame body and gas collection cover body, cover in sequence along conveying device setting cleaning station, rinsing station and purging station.And set a set of closed loop air collection purification system based on single fan: fan from cleaning station through negative pressure suction pipe suction contaminated air, the air enters the closed fan cover after demisting, adsorption and dehumidification;Fan uses its own operating waste heat to heat the inhaled clean air, and sends it to the purging station as high-temperature purge gas flow;Most of the purge gas flow returns to the cleaning station to form an internal circulation in the cover, and forms a negative pressure barrier at the inlet, thereby controlling the dispersion of water mist, aerosol and odor from the source.The present application has the advantages of compact structure, zero dispersion control of pollutants, significant environmental protection, energy saving and safety.

Description

Technical Field

[0001] This invention relates to the field of cleaning equipment technology, and in particular to a tray-type object cleaning device with a gas collection hood to prevent the escape of polluting gases and integrating secondary pollution prevention and water and air resource recycling. Background Technology

[0002] The reuse of pallets, such as plastic pallets and turnover boxes, is very common in industries such as industrial workshops, poultry farming, food processing, and logistics warehousing. However, these items often accumulate pollutants such as feces, residue, and oil after use, requiring regular cleaning and disinfection before they can be reused.

[0003] Existing cleaning methods have the following main drawbacks: 1) Serious secondary pollution: Open or semi-open high-pressure water gun washing or mechanical cleaning is commonly used. During the cleaning process, a large amount of water mist and aerosols carrying oil mist, pollutants and bacteria (such as Salmonella and E. coli) and malodorous gases (such as ammonia) are directly released into the workshop, seriously polluting the environment, endangering the health of operators, and bringing biosafety risks of cross-infection.

[0004] 2) High energy consumption: In order to improve the purging efficiency, traditional cleaning equipment usually needs to be equipped with a high-power electric heater to heat the air, which consumes a lot of energy and has high operating costs.

[0005] Therefore, how to solve the problem of secondary pollution in the cleaning process from the source, while achieving energy conservation, consumption reduction and resource recycling, is a technical problem that urgently needs to be solved in this field. Summary of the Invention

[0006] The purpose of this invention is to provide a cleaning device for pallet-type objects, which aims to solve the problems of serious secondary pollution, harsh working environment and high biosafety risks in existing cleaning technologies.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: a pallet cleaning device, comprising: a frame, and an air collection hood that cooperates with the frame to form a tunnel-like channel; and a conveying device arranged along the frame for conveying pallet items; A cleaning station located at the front end of the equipment; a purging station located at the rear end of the equipment; and a closed-loop air collection and purification system, the system comprising: A fan; a negative pressure suction pipe connecting the cleaning station to the suction side of the fan, used to create negative pressure at the cleaning station and draw out the polluted gas generated therein; The airflow treatment unit installed on the negative pressure suction pipe is used to dehumidify and purify the drawn-in polluted gas. And an air inlet pipe that connects the air outlet side of the blower to the purging station, used to send the gas discharged by the blower as a purging airflow to the purging station; Part of the gas discharged from the purging station flows back to the cleaning station inside the gas collection hood, forming a closed-loop airflow together with the gas drawn from the negative pressure suction pipe.

[0008] In this invention, the fan and its drive motor are housed within a closed fan shroud; the negative pressure suction pipe is connected to the internal space of the fan shroud, and the fan's air intake draws air from inside the fan shroud.

[0009] In addition, a rinsing station is provided between the cleaning station and the blowing station; the airflow returning from the blowing station to the cleaning station passes through the rinsing station and is washed by the liquid sprayed therein.

[0010] Preferably, a guide louver is provided between the purging station and the rinsing station to guide the return gas. The guide louver is used to confine the return gas in the upper space of the gas collection hood.

[0011] In this invention, the airflow treatment unit sequentially includes a multi-stage wire mesh demister for removing droplets and an adsorption tank for adsorbing moisture and odors.

[0012] Preferably, the rinsing station is provided with a swingable flipping hook, which is used to hook and flip the tray-like object during the movement of the conveying device.

[0013] Furthermore, an exhaust pipe is connected to the air inlet pipe, and a high-efficiency filter is provided at the end of the exhaust pipe; an air blowing control valve is provided on the air inlet pipe, and an exhaust control valve is provided on the exhaust pipe. By switching the valves, the internal circulation of airflow or the exhaust after purification can be selectively realized.

[0014] Preferably, the bottom of the frame is provided with wheels for movement and telescopic sliding support rods for parking.

[0015] Specifically, the cleaning station is equipped with a cleaning agent spraying assembly and a brushing assembly; the rinsing station is equipped with a clean water spraying assembly; the blowing station is equipped with a blowing assembly; and at the end of the tunnel-type passage, there is also a disinfection station for spraying disinfectant.

[0016] Its working mechanism is as follows: After the fan is started, it continuously draws water mist, aerosols, and odorous gases generated during the cleaning operation from the cleaning station, which is the source of pollution, through the negative pressure suction pipe, so that a micro-negative pressure is formed inside the cleaning station and the entire tunnel-like passage. This negative pressure actively captures all pollutants generated inside, thereby preventing any pollutants from escaping to the external workshop at the source.

[0017] Before entering the fan, the polluted gas being drawn in passes through an airflow treatment unit for purification. This unit may include a multi-stage wire mesh demister for efficiently capturing water droplets and liquid mist entrained in the airflow, achieving gas-liquid separation; it may also include an adsorption tank with built-in regenerable dehumidifier or activated carbon for deep dehumidification and adsorption of odor molecules.

[0018] The purified, purge air is drawn into the fan. In this invention, the fan and its drive motor are housed within a closed fan enclosure. As the air flows through the fan and motor, it fully absorbs the waste heat generated during their operation, thus naturally heating itself into a purge airflow with a certain temperature without any independent heating components. This invention does not include an independent heating component for heating the circulating airflow; the sole heat source for the circulating airflow is the waste heat generated by the fan and its drive motor during operation.

[0019] Subsequently, this clean, warm airflow is transported to the cleaning station through the air inlet pipe, and the surface of the tray-like object is cleaned at high speed by air knives and other cleaning components.

[0020] Furthermore, most of the gas discharged from the purging station is not directly discharged from the system. Instead, under the constraint of the gas collection hood, it flows back towards the lower-pressure cleaning station and is eventually drawn back into the system by the negative pressure suction pipe, thus forming a essentially closed airflow circulation loop. This not only greatly reduces the total amount of waste gas that needs to be treated and emitted, but also ensures the continuous recycling of energy.

[0021] To further optimize system performance, a rinsing station is added between the cleaning and purging stations for spraying and rinsing pallet-type items after cleaning with detergent. Furthermore, the return gas, as it passes through the rinsing station, is subjected to a secondary wash by the sprayed water, effectively removing any water-soluble contaminants that may remain in the airflow and ensuring the air inside the enclosure remains at a high level of cleanliness.

[0022] In addition, by setting switchable valves, the system can flexibly switch between the conventional internal circulation mode and the purified external discharge mode, increasing operational flexibility.

[0023] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. Excellent pollution control capabilities: Through negative pressure suction and closed-loop design, the escape of water mist, aerosols and odors during the cleaning process is eliminated from the source, achieving clean production and ensuring the operating environment and biosafety.

[0024] 2. Extreme energy efficiency: It creatively utilizes the waste heat of the fan itself to heat the circulating air, realizing the closed-loop recycling of air, completely replacing the traditional high-energy-consuming electric heater, and achieving significant energy-saving effect.

[0025] 3. Highly integrated structure: With a single fan as the core, it ingeniously realizes multiple functions such as negative pressure suction, positive pressure purging, and waste heat recovery. The system has a compact structure and high reliability.

[0026] Through the aforementioned closed-loop logic, this device eliminates pollutant emissions and achieves efficient energy reuse, thus possessing extremely high application value. Attached Figure Description

[0027] Figure 1 This is one of the overall structural schematic diagrams of the present invention; Figure 2 This is the second schematic diagram of the overall structure of the present invention; Figure 3 This is one of the internal structural diagrams of the present invention; Figure 4 yes Figure 3 A magnified view of part A in the middle; Figure 5 This is the second schematic diagram of the internal structure of the present invention; Figure 6 This is the third schematic diagram of the internal structure of the present invention; Figure 7 yes Figure 6 A magnified view of part B in the middle; Figure 8 This is the fourth schematic diagram of the internal structure of the invention; Figure 9 yes Figure 8 A magnified view of part C in the middle; Figure 10 This is a schematic diagram illustrating the movement and cleaning of tray-type items; Figure 11 This is a schematic diagram illustrating the flipping process of tray-like objects; Figure 12 This is a schematic diagram of the return air passing through the guide louvers.

[0028] In the diagram: 1. Frame; 2. Cleaning station; 3. Rinsing station; 4. Blowing station; 5. Disinfection station; 6. Gas collection hood; 7. Negative pressure suction pipe; 8. Multi-stage wire mesh demister; 9. Adsorption tank; 10. Fan cover; 11. Air inlet pipe; 12. High-efficiency filter; 13. Cleaning agent tank; 14. Clean water tank; 15. Disinfectant tank; 16. Disinfectant delivery pump; 17. Conveying device; 18. Guide plate; 19. Wheels; 20. Telescopic sliding support rod; 21. Trailer arm; 22. Cleaning agent delivery pump; 23. Cleaning agent delivery pipe; 24. Clean water delivery pump; 25. Clean water delivery pipe; 26. Cleaning agent spray assembly; 27. Scrubbing assembly; 28. Clean water spray assembly; 29. ​​Deflector louvers; 30. Blowing assembly; 31. Disinfectant spray assembly; 32. Tilting hook; 33. Discharge pipe; 34. Blower control valve; 35. Discharge control valve; 36. Fan; 37. Air intake; 38. Pallet-type items. Detailed Implementation

[0029] The present invention will be further described below with reference to specific embodiments.

[0030] The description of the present invention is merely a structural or even functional description of the embodiments, and the scope of the present invention is not limited by the embodiments described herein.

[0031] like Figures 1-12 As shown, this embodiment is achieved through the following technical solution: This invention provides a pallet-type object cleaning device, which includes a movable frame 1. The bottom of the frame 1 is provided with wheels 19 and a telescopic sliding support rod 20 for parking and leveling, and the front end is provided with a trailer bar 21, which facilitates the movement and deployment of the device.

[0032] Along the length of the frame 1, there are sequentially defined cleaning station 2, rinsing station 3, blowing station 4, and disinfection station 5. Above cleaning station 2, rinsing station 3, and blowing station 4, a gas collection hood 6 is installed. This gas collection hood 6, together with the frame 1, forms a tunnel-like sealed structure spanning all stations. Soft curtains are installed at its inlet and outlet to reduce gas exchange, and water curtains can be added to improve sealing. A conveyor device 17 runs through the entire tunnel-like structure, used to carry and transport palletized items 38 sequentially through each station. Guide plates 18 are provided on both sides of the conveyor device 17 to prevent items from deviating.

[0033] At cleaning station 2, cleaning agent spraying components 26 and brushing components 27 are arranged above, below, and on both sides of the conveying device 17. The cleaning agent spraying components 26 are connected to the external cleaning agent tank 13 via a cleaning agent delivery pipe 23 and a cleaning agent delivery pump 22, and are used to spray cleaning agent. The cleaning agent delivery pump 22 is a multi-stage vertical centrifugal pump with high head and high pressure. The brushing components 27 can be rotating wiping cloths or brushes, used for mechanically scrubbing the surface of objects.

[0034] At rinsing station 3, clean water spray units 28 are also arranged around the perimeter, connected to the clean water tank 14 via clean water delivery pipes 25 and a clean water delivery pump 24, for spraying clean water to rinse away residual cleaning agents and dirt. Notably, this station also includes a tilting hook 32 that can swing around an axis, as shown in the attached diagram. Figure 5 and 11 As shown, when a pallet-type item 38 is transported here, its front end is hooked by the flipping hook 32, while the conveyor 17 below continues to move forward, thereby causing the item to passively complete a flipping action, turning over and vibrating slightly to ensure that its bottom surface can also be thoroughly rinsed and to facilitate the washing off of dirt from the original top surface of the pallet-type item.

[0035] At the purging station 4, a purging assembly 30 (air knife) is provided above and below the conveying device 17 for drying objects.

[0036] At the disinfection station 5 at the tunnel exit, a disinfectant spraying assembly 31 is installed. Connected to a disinfectant tank 15 via a disinfectant delivery pump 16, it performs final atomized disinfection on the cleaned and blown-away objects. The nozzles atomize and spray disinfectant (such as quaternary ammonium salts or hypochlorous acid) to sterilize the surface and crevices of the trays. This station does not require scrubbing; the disinfectant is typically allowed to adhere naturally to the walls or stand briefly.

[0037] The working process of the air collection and purification system of the present invention is as follows: At the location of the gas collection hood 6 corresponding to the cleaning station 2, a negative pressure suction pipe 7 is connected. This pipe passes through a multi-stage wire mesh demister 8 and an adsorption tank 9 (which can be filled with regenerable desiccant such as silica gel, molecular sieve or activated carbon) in sequence, and then connects to the interior of the closed fan hood 10.

[0038] A fan 36 and its drive motor are installed inside the fan cover 10. The air intake 37 of the fan 36 draws air directly from inside the fan cover 10. The air outlet of the fan 36 is connected to the purging assembly 30 of the purging station 4 through the air inlet pipe 11.

[0039] When the system is running, the fan 36 starts, and the powerful suction acts on the cleaning station 2 through the negative pressure suction pipe 7, creating a slight negative pressure inside the entire air collection hood 6. All water mist, aerosols carrying pollutants, and odorous gases generated during the cleaning and rinsing process are actively captured and sucked into the negative pressure suction pipe 7.

[0040] The hot, humid polluted air first passes through a multi-stage wire mesh demister 8, where most of the droplets are intercepted and collected. It then enters an adsorption tank 9, where water vapor and odor molecules are further adsorbed and removed. The cleaned air finally enters the fan shroud 10.

[0041] Inside the fan shroud 10, air is drawn in by the fan 36. During this process, the air flows over the heated fan 36 and the surface of the motor, absorbing the waste heat generated by their operation, thus raising its temperature. This passively heated, warm, and clean air is then compressed through the air inlet pipe 11 and sent to the purging station 4, becoming a highly efficient purging air source.

[0042] As attached Figure 12 As shown, most of the gas discharged from the purging station 4 will flow back within the gas collection hood 6, passing through a guide louver 29 located between the purging station 4 and the rinsing station 3. This guide louver 29 has a gradually changing angle, guiding the returning gas to flow mainly in the upper part of the hood, avoiding interference with the transport of objects below and reducing escape from the inlet. The gas flows back to the rinsing station 3 and the cleaning station 2, and is finally drawn away again by the negative pressure suction pipe 7, forming a stable and continuous closed-loop cycle. Furthermore, when the returning gas passes through the rinsing station 3, it can be further washed by the sprayed clean water, effectively removing any water-soluble pollutants that may remain in the airflow, ensuring that the air inside the hood remains at a high level of cleanliness.

[0043] Additionally, an exhaust pipe 33 can be connected in parallel to the air inlet pipe 11, with a high-efficiency filter 12 installed at its end. By controlling the opening and closing of the air blowing control valve 34 on the air inlet pipe 11 and the exhaust control valve 35 on the exhaust pipe 33, the system can switch between "internal circulation mode" and "purified external exhaust mode". For example, before shutdown, it can be switched to external exhaust mode to completely purify the gas inside the hood before discharging it.

[0044] Of course, the above description is only a preferred embodiment of the present invention and should not be considered as limiting the scope of the embodiments of the present invention. The present invention is also not limited to the above examples, and all equivalent changes and improvements made by those skilled in the art within the scope of the present invention should fall within the patent coverage of the present invention.

Claims

1. A tray-type object cleaning device, characterized in that, include: The frame (1) and the air collection hood (6) that cooperates with the frame (1) to form a tunnel-like passage. A conveying device (17) for conveying pallet-type items (38) is provided along the frame (1). Cleaning station set at the front of the equipment (2); A purging station located at the rear of the equipment (4); And a closed-loop air collection and purification system, the system comprising: Fan (36); The negative pressure suction pipe (7) connecting the cleaning station (2) to the suction side of the fan (36) is used to create negative pressure in the cleaning station (2) and suck up the polluted gas generated therein; The airflow treatment unit installed on the negative pressure suction pipe (7) is used to dehumidify and purify the drawn-in polluted gas; And an air inlet pipe (11) that connects the air outlet side of the blower (36) to the purging station (4) is used to send the gas discharged by the blower (36) as a purging airflow to the purging station (4). Part of the gas discharged from the purging station (4) flows back to the cleaning station (2) in the gas collection hood (6), and together with the gas drawn from the negative pressure suction pipe (7), they form a closed-loop airflow.

2. The pallet cleaning equipment according to claim 1, characterized in that, The fan (36) and its drive motor are housed in a closed fan shroud (10); the negative pressure suction pipe (7) is connected to the internal space of the fan shroud (10), and the air intake (37) of the fan (36) draws air from inside the fan shroud (10).

3. The pallet cleaning equipment according to claim 1, characterized in that, Between the cleaning station (2) and the blowing station (4), there is also a rinsing station (3); the airflow returning from the blowing station (4) to the cleaning station (2) passes through the rinsing station (3) and is washed by the liquid sprayed therein.

4. The pallet cleaning equipment according to claim 3, characterized in that, Between the purging station (4) and the rinsing station (3), there is a guide louver (29) for guiding the return gas. The guide louver (29) is used to confine the return gas in the upper space of the gas collection hood (6).

5. The pallet cleaning equipment according to claim 1, characterized in that, The airflow treatment unit includes, in sequence, a multi-stage wire mesh demister (8) for removing droplets and an adsorption tank (9) for adsorbing moisture and odors.

6. The pallet cleaning equipment according to claim 3, characterized in that, The rinsing station (3) is equipped with a swingable flipping hook (32), which is used to hook and flip the tray-like object (38) during the movement of the conveying device (17).

7. The pallet cleaning equipment according to claim 1, characterized in that, An exhaust pipe (33) is also connected to the air inlet pipe (11), and a high-efficiency filter (12) is provided at the end of the exhaust pipe (33); a blower control valve (34) is provided on the air inlet pipe (11), and an exhaust control valve (35) is provided on the exhaust pipe (33). By switching the valves, the internal circulation of airflow or the exhaust after purification can be selectively realized.

8. The pallet cleaning equipment according to claim 1, characterized in that, The frame (1) is provided with wheels (19) for movement and telescopic sliding support rods (20) for parking at the bottom.

9. The pallet cleaning equipment according to claim 1, characterized in that, The cleaning station (2) is equipped with a cleaning agent spraying assembly (26) and a brushing assembly (27); the rinsing station (3) is equipped with a clean water spraying assembly (28); the blowing station (4) is equipped with a blowing assembly (30); and at the end of the tunnel-type passage, there is also a disinfection station (5) for spraying disinfectant.

Images