Spray cleaning apparatus

Abstract

The application discloses a spraying cleaning device, which comprises a cleaning box body, a conveying mechanism, a spraying mechanism and a heat radiating unit installed in the cleaning box body, a cleaning channel extending along the front-back direction is formed in the cleaning box body, and the two ends of the cleaning channel are respectively an inlet and an outlet; the conveying mechanism comprises a pressing part, a conveying part and a conveying power unit; at least part of the pressing part is vertically downward to the cleaning channel from top to bottom so as to be capable of pressing on the workpiece; the conveying part is matched with the workpiece from below of the cleaning channel; the conveying power unit drives the conveying part to reciprocate from the inlet to the outlet so as to convey the workpiece; the spraying mechanism comprises a plurality of nozzles for spraying cleaning liquid to the workpiece in the cleaning channel and a liquid supply unit for supplying the cleaning liquid to the nozzles; and the heat radiating unit is used for reducing the temperature of the cleaning liquid in the spraying mechanism; the application can take into account the continuous operation of the device, the stable clamping of the workpiece, the good cleaning effect and the high cleaning efficiency through the cooperation of the pressing part and the conveying part.

Description

Technical Field

[0001] This application relates to the field of cleaning equipment technology, and in particular to a spray cleaning device. Background Technology

[0002] In industrial or consumer sectors, foreign matter such as dust and droplets often adhere to a workpiece. To remove these foreign matter from the workpiece surface, a series of methods are employed, such as air blowing, centrifugal spinning, spraying (e.g., cleaning solutions prepared with water, ethanol, acetone, isopropanol, or propylene carbonate in the proportions of CN211683519U), and using brush-like devices (e.g., the cleaning brush disclosed in CN213056015U). Sometimes, various methods are combined (e.g., using a nozzle in conjunction with a cleaning brush in CN219505459U).

[0003] However, common cleaning methods cannot simultaneously achieve continuous operation, stable clamping, and good cleaning results. They can only clean one or a few workpieces at a time, and after cleaning, the cleaned workpieces need to be removed and new workpieces to be cleaned need to be placed in. This makes continuous operation impossible, resulting in low cleaning efficiency and making it unsuitable for continuous, large-scale, and high-efficiency operations. Even though belt conveyor mechanisms have been used to address the problem of low cleaning efficiency, the elasticity of the belt causes it to vibrate both radially and axially during transmission. This vibration can cause the workpieces to shift relative to the belt, especially under the impact of the sprayed cleaning fluid, which further increases the possibility of displacement, thus preventing normal conveying. At the same time, its cleaning effect is also limited. Summary of the Invention

[0004] In order to solve the problems of non-continuous operation, easy displacement of workpieces under the impact of cleaning fluid, and poor cleaning effect in the existing technology, the purpose of this application is to provide a spray cleaning device that can take into account continuous operation, stable clamping of workpieces and good cleaning effect.

[0005] To achieve the above objectives, this application adopts the following technical solution: a spray cleaning device, comprising:

[0006] The cleaning chamber has a cleaning channel extending in the front-to-back direction inside. One end of the cleaning channel has a feed port for inputting workpieces, and the other end has a discharge port for outputting workpieces.

[0007] A conveying mechanism is installed inside the cleaning chamber. The conveying mechanism includes a pressing member arranged above the cleaning channel, a conveying member arranged below the cleaning channel, and a conveying power unit that is drively connected to the conveying member. The conveying power unit is used to drive the conveying member to reciprocate from the inlet to the outlet. The conveying member is configured to cooperate with the workpiece from below the cleaning channel. At least a portion of the pressing member hangs down from top to bottom into the cleaning channel and is configured to press against the workpiece in the cleaning channel.

[0008] A spraying mechanism, installed inside the cleaning chamber, includes a plurality of nozzles and a liquid supply unit communicating with the nozzles. The liquid supply unit supplies cleaning fluid to the nozzles, and each nozzle is configured to spray the cleaning fluid onto the workpiece within the cleaning channel.

[0009] A heat dissipation unit is installed inside the cleaning chamber and connected to the spray mechanism. The heat dissipation unit is used to reduce the temperature of the cleaning fluid in the spray mechanism.

[0010] In the above technical solution, a further preferred embodiment is that the conveying power unit includes a conveying motor, a driving pulley, and several driven pulleys. The conveying component is wound around the driving pulley and the several driven pulleys. The driving pulley and the several driven pulleys are arranged between the feed inlet and the discharge outlet, and are all rotatably installed inside the cleaning tank. The conveying motor is connected to the driving pulley to drive the driving pulley to rotate around its own axis.

[0011] In the above technical solution, it is further preferred that both the pressing component and the conveying component are type B mesh belts, and both the pressing component and the conveying component are annular belts.

[0012] In the above technical solution, a further preferred embodiment is that the cleaning chamber further includes a downward conveying power unit, which includes a drive motor and several support pulleys. Each of the support pulleys is rotatably installed inside the cleaning chamber and is located above the cleaning channel. The downward pressing component is wound around the several support pulleys, and at least a portion of the downward pressing component hangs down below the lowest support pulley. The drive motor is connected to one of the support pulleys for transmission.

[0013] In the above technical solution, a further preferred embodiment is that the conveying component is equipped with a plurality of nail plates, each nail plate including at least one limiting nail capable of inserting into the workpiece, the plurality of nail plates being spaced apart in the front-back direction, and the at least one limiting nail being spaced apart on the corresponding nail plate.

[0014] In the above technical solution, a further preferred embodiment is that the spraying mechanism further includes a cover, which covers the outside of the cleaning channel and the plurality of nozzles.

[0015] In the above technical solution, a further preferred embodiment is that the liquid supply unit includes a circulation power unit, a filter, and a spray power unit, and the cover, the circulation power unit, the filter, the spray power unit, and the plurality of nozzles are connected in sequence through pipelines.

[0016] In the above technical solution, a further preferred embodiment is that the cover includes an openable and closable top cover located above the cleaning channel, a water storage tank located below the cleaning channel, and a pair of side plates located on the left and right sides of the cleaning channel respectively, and the bottom of the water storage tank is provided with a manifold that communicates with the pipeline.

[0017] In the above technical solution, a further preferred embodiment is that the heat dissipation unit includes a heat exchanger and a cooling fan, the heat exchanger is connected between the filter and the housing, and the cooling fan is installed on one side of the heat exchanger and faces the heat exchanger.

[0018] In the above technical solution, it is further preferred that the heat exchanger has a plurality of heat dissipation fins facing the cooling fan.

[0019] Compared with the prior art, this application achieves the following beneficial effects:

[0020] The conveyor component of this application, in conjunction with the power unit for conveying, can reciprocate the conveying of workpieces between the inlet and outlet, achieving continuous and uninterrupted cleaning and improving work efficiency. Through the cooperation of the conveyor component and the pressing component, the workpieces are firmly clamped during cleaning, ensuring the stable operation of the equipment. When the spray pressure of the spraying mechanism is increased to improve the cleaning effect, the conveyor component and the pressing component can ensure the stable clamping of the workpieces. This application can balance continuous operation, stable clamping of workpieces, good cleaning effect, and high cleaning efficiency. Attached Figure Description

[0021] Figure 1 This is a front view of a spray cleaning device provided in an embodiment of this application;

[0022] Figure 2 For along Figure 1A sectional view cut along line AA in the diagram;

[0023] Figure 3 For along Figure 1 A sectional view cut along the BB line in the image;

[0024] Figure 4 for Figure 3 A magnified view of a portion of point D in the middle;

[0025] Figure 5 for Figure 1 Left view of the spray cleaning equipment in the middle;

[0026] Figure 6 for Figure 1 Right view of the spray cleaning equipment in the middle;

[0027] Figure 7 For along Figure 6 A sectional view cut by the CC line;

[0028] Figure 8 This is a schematic diagram illustrating the principle of the heat exchanger connection between the spray mechanism and the heat dissipation unit of a spray cleaning device provided in an embodiment of this application.

[0029] The components include: 100. Spray cleaning equipment; 10. Cleaning chamber; 1. Cleaning channel; 101. Inlet; 102. Outlet; 13. Viewing door panel; 20. Conveying mechanism; 2. Pressing component; 3. Conveying component; 4. Conveying power unit; 41. Conveying motor; 42. Driving pulley; 43. Driven pulley; 5. Nail plate; 51. Limiting nail; 6. Pressing conveying power unit; 61. Drive motor; 62. Support pulley; 30. Spraying mechanism; 71. Top nozzle group; 711. First spray... Nozzle; 712, Second nozzle; 713, Third nozzle; 72, Bottom nozzle assembly; 73, Left nozzle; 74, Right nozzle; 8, Liquid supply unit; 81, Circulation power unit; 82, Filter; 83, Spraying power unit; 84, Pipeline; 9, Cover; 91, Top cover; 92, Water storage tank; 921, Manifold; 922, Liquid inlet; 93, Side plate; 14, Float valve; 40, Heat dissipation unit; 11, Heat exchanger; 111, Heat dissipation fins; 12, Cooling fan; 200, Workpiece. Detailed Implementation

[0030] To illustrate the technical content, structural features, achieved objectives, and effects of the application in detail, the technical solutions of the embodiments of this application will be described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. In the following description, for illustrative purposes, numerous specific details are set forth to provide a detailed description of various exemplary embodiments or implementations of the invention. However, various exemplary embodiments may also be implemented without these specific details or in one or more equivalent arrangements. Furthermore, the various exemplary embodiments may differ, but are not necessarily exclusive. For example, the specific shape, structure, and characteristics of the exemplary embodiments may be used or implemented in another exemplary embodiment without departing from the inventive concept.

[0031] This application provides a spray cleaning device that can continuously clean workpieces without interruption, while ensuring high work efficiency and cleaning efficiency during the cleaning process.

[0032] like Figure 1 , 2 As shown, the spray cleaning equipment 100 includes: a cleaning chamber 10 and a conveying mechanism 20 and a spraying mechanism 30 arranged inside the cleaning chamber 10.

[0033] like Figure 3 , 5 As shown in Figures 6 and 7, a cleaning channel 1 extending in the front-to-back direction is formed inside the cleaning chamber 10. The front end of the cleaning channel 1 has an inlet 101 for inputting workpieces, and the rear end has an outlet 102 for outputting workpieces. The workpiece 200 is conveyed from the inlet 101 to the outlet 102 in the cleaning channel 1.

[0034] The conveying mechanism 20 is used to continuously convey the workpiece 200 input from the feed inlet 101 through the cleaning channel 1 to the discharge outlet 102 within the cleaning chamber 10, and to limit the movement of the workpiece 200 during the conveying process. The spraying mechanism 30 is used to spray cleaning fluid onto the workpiece 200 conveyed in the cleaning channel 1, thereby cleaning the workpiece 200.

[0035] The conveying mechanism 20 includes a pressing member 2 arranged above the cleaning channel 1, a conveying member 3 arranged below the cleaning channel 1, and a conveying power unit 4 driven by the conveying member 3. The conveying power unit 4 drives the conveying member 3 to reciprocate from the inlet 101 to the outlet 102. The conveying member 3 is configured to engage with the workpiece 200 from below the cleaning channel 1. At least a portion of the pressing member 2 extends downward into the cleaning channel 1 and is configured to press against the workpiece 200 within the cleaning channel 1. The pressing member 2 presses down on the workpiece 200 from above, and the conveying member 3 engages with the workpiece 200 from below. The two interact to limit the workpiece 200, preventing it from shifting due to the pressure of the spray mechanism 30. When the spray pressure of the spray mechanism 30 is increased to improve the cleaning effect, the workpiece 200 will not be blown away due to the restraint of the conveying member 3 and the pressing member 2, thus improving the cleaning efficiency.

[0036] In this embodiment, both the pressing component 2 and the conveying component 3 are type B mesh belts, and both are annular belts, meaning that the beginning and end of each type B mesh belt are connected, and both the pressing component 2 and the conveying component 3 can rotate in an annular cycle. The pressing component 2 hangs down into the cleaning channel 1 under its own gravity and presses against the workpiece 200 to limit the movement of the workpiece 200.

[0037] like Figure 3 , 4 As shown in Figures 5 and 7, the conveyor 3 is equipped with a plurality of nail plates 5, each nail plate 5 including at least one limiting nail 51 capable of inserting into the workpiece 200. The plurality of nail plates 5 are spaced apart in the front-to-back direction, and at least one limiting nail 51 is spaced apart in the left-to-right direction on the corresponding nail plate 5. The limiting nail 51 can be inserted upward into the workpiece 200 to restrict the movement of the workpiece 200. A plurality of non-powered rollers are respectively installed between the conveyor 3 and the inlet 101 and the outlet 102 to facilitate the conveying of the workpiece 200.

[0038] The Type B mesh belt vibrates slightly during operation. When it comes into contact with the workpiece 200, it helps to remove foreign matter, cleaning fluid, and mixtures of foreign matter and cleaning fluid adhering to the workpiece 200. It is especially suitable for scenarios with strong adhesion, such as when the workpiece 200 is a 3D printed part made of photocurable resin (such as shoes). The liquid resin adhering to its surface is highly viscous and has strong adhesion. Using the Type B mesh belt for conveying allows the strong-adhesive resin to be separated, effectively improving cleaning efficiency and further enhancing the cleaning effect.

[0039] The conveying power unit 4 includes a conveying motor 41, a drive pulley 42, and several driven pulleys 43. The driven pulleys 43 are arranged in two rows, one above the other. The drive pulley 42 is parallel to one of the rows of driven pulleys 43. The conveying component 3 is taut on the drive pulley 42 and the driven pulleys 43. The drive pulley 42 and the driven pulleys 43 are arranged between the inlet 101 and the outlet 102, and are rotatably mounted inside the cleaning chamber 10. The conveying motor 41 is connected to the drive pulley 42 to drive the drive pulley 42 to rotate around its own axis. The drive pulley 42 drives the conveying component 3 to rotate in a circular cycle. The driven pulleys 43 in the upper row are arranged at the bottom of the cleaning channel 1, serving to support the rotation of the conveying component 3 and to support the workpieces 200 transported on the conveying component 3.

[0040] In other embodiments, the conveying components include at least one pair of transverse conveying components spaced apart in the left-right direction and a plurality of longitudinal conveying components connected between the at least one pair of transverse conveying components. The outer edges of the driving pulley and the driven pulley are respectively provided with at least one pair of slots spaced apart in the left-right direction. Each transverse conveying component is clearance-fitted with its corresponding slot. The plurality of longitudinal conveying components are spaced apart from front to back between the at least one pair of transverse conveying components. Driven by the driving pulley, the at least one pair of transverse conveying components moves the plurality of longitudinal conveying components in the front-back direction. The transverse conveying components are rigid bodies, and the longitudinal conveying components are flexible components.

[0041] The cleaning chamber 10 also includes a pressing and conveying power unit 6, which includes a drive motor 61 and several support pulleys 62. Each support pulley 62 is rotatably installed inside the cleaning chamber 10 and is located above the cleaning channel 1. The pressing component 2 is wound around several support pulleys 62, and at least part of the pressing component 2 hangs down below the lowest support pulley 62, so that it can press on the workpiece 200 in the cleaning channel 1. The drive motor 61 is connected to one of the support pulleys 62, thereby driving the support pulley 62 to rotate around its own axis, further driving the pressing component 2 to rotate in a circular cycle.

[0042] The conveying speeds of the pressing component 2 and the conveying component 3 are basically the same, thus maintaining a stable clamping effect on the workpiece 200. Alternatively, the conveying speed of the conveying component 3 can be slightly less than that of the pressing component 2 (e.g., the ratio between the two is 0.98-0.95), thereby increasing the amplitude of the "slight shaking" and allowing foreign matter, cleaning fluid, and the mixture of foreign matter and cleaning fluid adhering to the workpiece 200 to be more thoroughly removed from the workpiece 200, which is beneficial to improving the cleaning effect.

[0043] like Figure 2 , 7As shown in Figure 8, the spraying mechanism 30 is installed inside the cleaning chamber 10. The spraying mechanism 30 includes several nozzles and a liquid supply unit 8 connected to the several nozzles. The liquid supply unit 8 is used to supply cleaning liquid to the several nozzles. Each nozzle is configured to spray cleaning liquid onto the workpiece 200 in the cleaning channel 1 to continuously clean the continuously transported workpiece 200.

[0044] Several nozzles are arranged around the cleaning channel 1, including a top nozzle group 71 arranged above the cleaning channel 1, a bottom nozzle group 72 arranged below the cleaning channel 1, a left nozzle 73 arranged on the left side of the cleaning channel 1, and a right nozzle 74 arranged on the right side of the cleaning channel 1. The top nozzle group 71 and the bottom nozzle group 72 are both 360° rotating nozzles. The top nozzle group 71 and the bottom nozzle group 72 are centrally mounted at the top and bottom of the cleaning channel 1, respectively, and rotate around a center line X1 extending in the vertical direction. The top nozzle group 71 includes a first nozzle 711 in the middle and a second nozzle 712 and a third nozzle 713 arranged opposite each other with the center line X1 as the center. The first nozzle 711, the second nozzle 712, and the third nozzle 713 spray cleaning fluid simultaneously, and the cleaning fluid is sprayed from top to bottom through the continuous or intermittent rotation of the top nozzle group 71. The bottom nozzle assembly 72 has the same structure as the top nozzle assembly 71, which will not be described in detail here, but the bottom nozzle assembly 72 continuously or intermittently rotates to spray cleaning fluid from bottom to top.

[0045] Left nozzle 73 and right nozzle 74 are arranged opposite each other, spraying cleaning fluid from the left and right sides of workpiece 200 respectively. Left nozzle 73 and right nozzle 74 are rotating nozzles that swing back and forth in the same horizontal plane, and their swing range does not exceed 180°. Top nozzle group 71, bottom nozzle group 72, left nozzle 73 and right nozzle 74 spray cleaning fluid into workpiece 200 in cleaning channel 1 from different directions, and the spray ranges overlap within cleaning channel 1, thereby forming a comprehensive spraying and rinsing of workpiece 200.

[0046] like Figure 2 , 3As shown in Figures 7 and 8, the spraying mechanism 30 also includes a cover 9, which covers the outside of the cleaning channel 1 and several nozzles. The cover 9 includes an openable and closable top cover 91 located above the cleaning channel 1, a water storage tank 92 located below the cleaning channel 1, and a pair of side plates 93 located on the left and right sides of the cleaning channel 1, respectively. The top cover 91 can be opened and closed. During cleaning operations, the top cover 91 is closed; when an abnormal situation occurs, the top cover 91 can be opened to inspect the internal parts, and the position and posture of the workpiece can also be manually adjusted. In this embodiment, the pair of side plates 93 are transparent or semi-transparent acrylic plates, making the status of each part and workpiece in the cleaning channel 1 clearly visible, facilitating user monitoring of the working status, and preventing the cleaning liquid from splashing outwards from the cleaning channel 1. The water storage tank 92 is located below the conveying mechanism 20, the cleaning channel 1, and several nozzles, and is used to receive and store the cleaning liquid flowing down from the spray.

[0047] like Figure 2 , 7 As shown in Figure 8, the liquid supply unit 8 includes a circulation power unit 81, a filter 82, and a spray power unit 83. The housing 9 is connected to the circulation power unit 81, the filter 82, the spray power unit 83, and several nozzles in sequence through a pipeline 84. The bottom of the water storage tank 92 has a manifold 921 that communicates with the pipeline 84. Under the action of the circulation power unit 81, the cleaning liquid in the water storage tank 92 enters the filter 82 through the manifold 921. The filter 82 filters the cleaning liquid to remove foreign matter washed off the workpiece 200. The filtered cleaning liquid is then transported to several nozzles under the action of the spray power unit 83. Each nozzle sprays the cleaning liquid at high pressure into the cleaning channel 1 to rinse the workpiece 200 in the cleaning channel 1.

[0048] like Figure 7 , 8 As shown, the spray cleaning equipment 100 also includes a heat dissipation unit 40, which is connected to the spray mechanism 30 to dissipate heat and cool the cleaning fluid circulating in the spray mechanism 30.

[0049] The heat dissipation unit 40 includes a heat exchanger 11 and a cooling fan 12. The heat exchanger 11 is connected between the filter 82 and the water storage tank 92, so that part of the cleaning liquid filtered by the filter 82 is delivered to several nozzles by the spray power device 83, and the other part of the cleaned cleaning liquid is delivered to the heat dissipation unit 40. The heat dissipation unit 40 cools down this part of the cleaning liquid and then delivers it back to the water storage tank to reduce the temperature rise of the cleaning liquid due to long-term circulation.

[0050] The water storage tank 92 is provided with a liquid inlet 922 that is connected to the heat exchanger 11. The heat dissipation unit 40 continuously replenishes the water storage tank 92 with clean and cooled cleaning fluid through the liquid inlet 922.

[0051] A float valve 14 is also installed in the water storage tank 92, which is connected to an external water source. During long-term cleaning, some of the cleaning fluid in the spray mechanism 30 is discharged from the spray cleaning equipment along with the workpiece 200, reducing the amount of cleaning fluid in the spray mechanism 30. The float valve 14 automatically replenishes the fluid according to the liquid level in the water storage tank 92, so that the replenished cleaning fluid enters the spray mechanism 30 for circulation.

[0052] A cooling fan 12 is installed on one side of the heat exchanger 11 and blows cool air toward the heat exchanger 11. After the cleaning fluid dissipates heat inside the heat exchanger 11, it is transported to the water storage tank 92 through the inlet 922. The heat exchanger 11 has several heat dissipation fins 111 facing the cooling fan 12, which effectively improves the heat dissipation efficiency and causes the temperature of the cleaning fluid inside the heat exchanger 11 to drop rapidly.

[0053] like Figure 1 , 3 As shown, the cleaning chamber 10 covers the outside of the conveying mechanism 20, the spraying mechanism 30 and the heat dissipation unit 40. The left and right sides of the cleaning chamber 10 include openable and closable viewing doors 13. Users can monitor the working status from the outside of the cleaning chamber 10 through the viewing doors 13 and the side panels 93. When the cleaning work is stopped, the viewing doors 13 can be opened to inspect and repair the interior.

[0054] When the conveying power unit 4 drives the conveyor 3 to reciprocate between the inlet 101 and the outlet 102, the workpiece 200 is sent from the inlet 101 to the conveyor 3. Under the transport of the conveyor 3, the workpiece 200 is cleaned by the spray mechanism 30 in the cleaning channel 1 and then sent out from the outlet 102, thus forming continuous and uninterrupted cleaning. The loading and unloading of the workpiece 200 can be carried out without stopping the machine, thereby realizing continuous and uninterrupted cleaning and ensuring work efficiency.

[0055] The foregoing has shown and described the basic principles, main features, and advantages of this application. Those skilled in the art should understand that this application is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this application. Various changes and modifications can be made without departing from the spirit and scope of this application. The scope of protection claimed by this application is defined by the appended claims, specification, and their equivalents.

Claims

1. A spray cleaning device, characterized in that, include: The cleaning chamber has a cleaning channel extending in the front-to-back direction inside. One end of the cleaning channel has a feed port for inputting workpieces, and the other end has a discharge port for outputting workpieces. A conveying mechanism is installed inside the cleaning chamber. The conveying mechanism includes a pressing member arranged above the cleaning channel, a conveying member arranged below the cleaning channel, and a conveying power unit that is drively connected to the conveying member. The conveying power unit is used to drive the conveying member to reciprocate from the inlet to the outlet. The conveying member is configured to cooperate with the workpiece from below the cleaning channel. At least a portion of the pressing member hangs down from top to bottom into the cleaning channel and is configured to press against the workpiece in the cleaning channel. A spraying mechanism is installed inside the cleaning chamber. The spraying mechanism includes a plurality of nozzles and a liquid supply unit connected to the plurality of nozzles. The liquid supply unit is used to supply cleaning liquid to the plurality of nozzles. Each of the nozzles is configured to spray the cleaning liquid onto the workpiece in the cleaning channel. as well as A heat dissipation unit is installed inside the cleaning chamber and connected to the spray mechanism. The heat dissipation unit is used to reduce the temperature of the cleaning fluid in the spray mechanism.

2. The spray cleaning equipment according to claim 1, characterized in that, The conveying power unit includes a conveying motor, a driving pulley, and several driven pulleys. The conveying component is wound around the driving pulley and the several driven pulleys. The driving pulley and the several driven pulleys are arranged between the feed inlet and the discharge outlet, and are all rotatably mounted inside the cleaning tank. The conveying motor is connected to the driving pulley to drive the driving pulley to rotate around its own axis.

3. The spray cleaning equipment according to claim 2, characterized in that, Both the pressing component and the conveying component are type B mesh belts, and both are annular belts.

4. The spray cleaning equipment according to claim 3, characterized in that, The cleaning chamber also includes a downward conveying power unit, which includes a drive motor and several support pulleys. Each of the support pulleys is rotatably installed inside the cleaning chamber and is located above the cleaning channel. The downward pressing component is wound around the several support pulleys, and at least part of the downward pressing component hangs down below the lowest support pulley. The drive motor is connected to one of the support pulleys.

5. The spray cleaning equipment according to claim 1, characterized in that, The conveyor is equipped with a plurality of nail plates, each of the nail plates including at least one limiting nail that can be inserted into the workpiece. The plurality of nail plates are spaced apart in the front-back direction, and the at least one limiting nail is spaced apart on the corresponding nail plate.

6. The spray cleaning equipment according to claim 1, characterized in that, The spraying mechanism also includes a cover that covers the outside of the cleaning channel and the plurality of nozzles.

7. The spray cleaning equipment according to claim 6, characterized in that, The liquid supply unit includes a circulation power unit, a filter, and a spray power unit. The housing, the circulation power unit, the filter, the spray power unit, and the plurality of nozzles are connected in sequence through pipelines.

8. The spray cleaning equipment according to claim 7, characterized in that, The housing includes an openable and closable top cover located above the cleaning channel, a water storage tank located below the cleaning channel, and a pair of side plates located on the left and right sides of the cleaning channel, respectively. The bottom of the water storage tank is provided with a manifold that communicates with the pipeline.

9. The spray cleaning equipment according to claim 7, characterized in that, The heat dissipation unit includes a heat exchanger and a cooling fan. The heat exchanger is connected between the filter and the housing. The cooling fan is installed on one side of the heat exchanger and faces the heat exchanger.

10. The spray cleaning equipment according to claim 9, characterized in that, The heat exchanger has a plurality of heat dissipation fins facing the cooling fan.

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