Spraying operation system and spraying operation vehicle

Abstract

The utility model discloses a spraying operation system and a spraying operation vehicle, and relates to the technical field of spraying operation vehicles, and the spraying operation system comprises a material box, a first switching device, a second switching device, a conveying pump, a third switching device, a mixing device, a first switching valve, a fourth switching device, a fifth switching device, a high-pressure air source and a cleaning fluid box. The first switching device is connected with the feeding port, the second switching device and the material box, the conveying pump is connected between the second switching device and the third switching device, the third switching device is connected with the mixing device and the material box, the mixing device is connected with the fourth switching device, and the fourth switching device is connected with the cleaning liquid box and a target workplace. The fifth switching device is connected between the conveying pump and the cleaning liquid box, and the first switching valve is connected between the high-pressure air source and the third switching device. According to the spraying operation system, the residual medium in the pipeline of the spraying operation system can be cleaned in time, so that the pipeline achieves a specified cleaning effect, and the problem of pipeline blockage is solved.

Description

Technical Field

[0001] The present application relates to the technical field of spraying operation vehicles, and in particular to a spraying operation system and a spraying operation vehicle. Background Art

[0002] At present, the spraying operation system is a system that can load the medium autonomously, mix the medium in proportion and spray the medium, and can realize autonomous loading and spraying operation through control. However, after the existing spraying operation system completes the spraying operation, some medium will remain in the pipeline, causing the pipeline to be blocked. The spraying operation system fails to clean the residual medium in the pipeline in time, so that the pipeline cannot achieve the specified cleaning effect.

[0003] Therefore, it is necessary for those skilled in the art to provide a spraying system that can timely clean the residual medium in the pipeline so that the pipeline can achieve the specified cleaning effect. Utility Model Content

[0004] The purpose of the present application is to provide a spraying operation system and a spraying operation vehicle, wherein the spraying operation system can clean the residual medium in the pipeline in time, so that the pipeline can achieve the specified cleaning effect.

[0005] To achieve the above-mentioned purpose, the present application provides a spraying operation system, including a material box, a first switching device, a second switching device, a delivery pump, a third switching device, a mixing device, a first switching valve, a fourth switching device, a fifth switching device, a high-pressure gas source and a cleaning liquid tank;

[0006] The first end of the first switching device is used to connect to the feed port, the second end of the first switching device is connected to the first end of the second switching device, the second end of the second switching device is connected to the first end of the delivery pump, the second end of the delivery pump is connected to the first end of the third switching device, the second end of the third switching device is connected to the first end of the mixing device, the second end of the mixing device is connected to the first end of the fourth switching device, the second end of the fourth switching device is connected to the first end of the cleaning liquid tank, the second end of the cleaning liquid tank is connected to the first end of the fifth switching device, the second end of the fifth switching device is connected to the first end of the delivery pump, and the third end of the fourth switching device is used to connect to the target workplace;

[0007] The third end of the third switching device is connected to the first end of the material box, and the second end of the material box is connected to the third end of the first switching device;

[0008] The first end of the first switching valve is connected to the high-pressure gas source, and the second end of the first switching valve is connected to the first end of the third switching device.

[0009] In some embodiments, a discharge device is also included. A discharge port is provided at the lowest position of the delivery pump. The discharge device is connected to the discharge port. The second end of the first switching valve is also connected to the second end of the delivery pump.

[0010] In some embodiments, it also includes a sealing medium storage tank and a second switching valve, wherein a first end of the second switching valve is connected to the sealing medium storage tank, and a second end of the second switching valve is connected to a first end of a delivery pump.

[0011] In some embodiments, a control device is also included, which is configured to communicate with the first switching device, the second switching device, the delivery pump, the third switching device, the mixing device, the first switching valve, the fourth switching device, the fifth switching device, the discharge device and the second switching valve, and the control device is used to control the operation of the first switching device, the second switching device, the delivery pump, the third switching device, the mixing device, the first switching valve, the fourth switching device, the fifth switching device, the discharge device and the second switching valve.

[0012] In some embodiments, a state interaction device is also included. The state interaction device is installed on the material box. The state interaction device is configured to communicate with the control device. The state interaction device is used to send information about the material box state corresponding to the trigger condition to the control device.

[0013] In some embodiments, the state interaction device is a liquid level detection device, and the material box state corresponding to the trigger condition is that the liquid level of the conveying medium in the material box reaches a preset liquid level.

[0014] In some embodiments, the state interaction device is a weight detection device, and the state of the material box corresponding to the trigger condition is that the weight of the material box reaches a preset weight.

[0015] In some embodiments, the first switching device, the second switching device, the third switching device, the fourth switching device, the fifth switching device, the first switching valve and the second switching valve are all electric switching valves.

[0016] In some embodiments, a filter is provided in the cleaning liquid tank, and the filter is used to filter out particulate matter of a preset particle size when the cleaning medium circulates between the cleaning liquid tank, the fifth switching device, the delivery pump, the third switching device, the mixing device and the fourth switching device.

[0017] The present application also provides a spraying operation vehicle, comprising any of the above-mentioned spraying operation systems.

[0018] With respect to the above background technology, the spraying operation system provided by the embodiment of the present application includes a material box, a first switching device, a second switching device, a delivery pump, a third switching device, a mixing device, a first switching valve, a fourth switching device, a fifth switching device, a high-pressure gas source and a cleaning liquid tank. Among them, the first end of the first switching device is used to connect to the feed port, the second end of the first switching device is connected to the first end of the second switching device, the second end of the second switching device is connected to the first end of the delivery pump, the second end of the delivery pump is connected to the first end of the third switching device, the second end of the third switching device is connected to the first end of the mixing device, the second end of the mixing device is connected to the first end of the fourth switching device, the second end of the fourth switching device is connected to the first end of the cleaning liquid tank, the second end of the cleaning liquid tank is connected to the first end of the fifth switching device, the second end of the fifth switching device is connected to the first end of the delivery pump, the third end of the fourth switching device is used to connect to the target workplace, the third end of the third switching device is connected to the first end of the material box, the second end of the material box is connected to the third end of the first switching device, the first end of the first switching valve is connected to the high-pressure gas source, and the second end of the first switching valve is connected to the first end of the third switching device.

[0019] When performing cleaning operations, the cleaning operations mainly include cleaning fluid cleaning operations, pipeline circulation cleaning operations and material box circulation cleaning operations. Specifically,

[0020] Cleaning operation with cleaning liquid: the fifth switching device connects the cleaning liquid tank and the delivery pump, the third switching device connects the delivery pump and the mixing device, and the fourth switching device connects the mixing device and the target workplace. After each device is switched in place, the delivery pump is turned on, and the delivery pump delivers the cleaning medium to the mixing device, and then pumps it to the target workplace. In this way, the main pipelines in the spraying operation system can be cleaned;

[0021] Pipeline circulation cleaning operation: the fifth switching device connects the cleaning liquid tank and the delivery pump, the third switching device connects the delivery pump and the mixing device, and the fourth switching device connects the mixing device and the cleaning liquid tank. After each device is switched in place, the delivery pump is turned on, and the cleaning medium circulates in the pipeline and the cleaning liquid tank to further achieve the cleaning effect;

[0022] Circulation cleaning operation of the material box: the fifth switching device connects the cleaning liquid tank and the delivery pump, the third switching device connects the delivery pump and the material box, after each device is switched into place, the delivery pump is turned on to deliver the cleaning medium to the material box, after the delivery is completed, the first switching device connects the material box and the second switching device, the second switching device connects the first switching device and the delivery pump, and the third switching device connects the delivery pump and the material box, after each device is switched into place, the delivery pump is turned on, and the cleaning medium circulates in the pipeline and the material box to achieve the effect of cleaning the material box.

[0023] When performing air blowing operations: the third switching device connects the first switching valve and the mixing device, the fourth switching device connects the mixing device and the target workplace, after each device is switched into place, the first switching valve is opened, and the high-pressure gas in the high-pressure gas source is transported to the target workplace via the first switching valve, the third switching device and the fourth switching device, so that the residual medium in the pipeline can be transported to the target workplace, thereby achieving a cleaning effect.

[0024] With such an arrangement, the cleaning operations including cleaning liquid cleaning operations, pipeline circulation cleaning operations and material box circulation cleaning operations as well as air blowing operations are adopted, which can timely clean the residual medium in the pipeline of the spraying operation system, so that the pipeline can achieve the specified cleaning effect, thereby solving the problem of pipeline blockage. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the related technologies, the drawings required for use in the embodiments or the related technical descriptions are briefly introduced below. Obviously, the drawings described below are merely embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0026] Figure 1 This is a principle block diagram of the spraying system in the embodiment of the present application.

[0027] in:

[0028] 1. Material box; 2. First switching device; 3. Second switching device; 4. Delivery pump; 5. Third switching device; 6. Mixing device; 7. First switching valve; 8. Discharge device; 9. Second switching valve; 10. Fifth switching device; 11. Sealing medium storage tank; 12. High-pressure gas source; 13. Cleaning liquid tank; 14. Fourth switching device; 15. Target workplace. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0030] In order to enable those skilled in the art to better understand the present application, the present application is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0031] It should be noted that the directional words such as "upper end, lower end, left side, right side" described below are all defined based on the drawings in the specification.

[0032] Please refer to Figure 1 , Figure 1 This is a principle block diagram of the spraying system in the embodiment of the present application.

[0033] The spraying operation system provided in the embodiment of the present application includes a material box 1, a first switching device 2, a second switching device 3, a delivery pump 4, a third switching device 5, a mixing device 6, a first switching valve 7, a fourth switching device 14, a fifth switching device 10, a high-pressure gas source 12 and a cleaning liquid tank 13.

[0034] Among them, the first end of the first switching device 2 is used to connect to the feed port, the second end of the first switching device 2 is connected to the first end of the second switching device 3, the second end of the second switching device 3 is connected to the first end of the delivery pump 4, the second end of the delivery pump 4 is connected to the first end of the third switching device 5, the second end of the third switching device 5 is connected to the first end of the mixing device 6, the second end of the mixing device 6 is connected to the first end of the fourth switching device 14, the second end of the fourth switching device 14 is connected to the first end of the cleaning liquid tank 13, the second end of the cleaning liquid tank 13 is connected to the first end of the fifth switching device 10, the second end of the fifth switching device 10 is connected to the first end of the delivery pump 4, the third end of the fourth switching device 14 is used to connect to the target workplace 15, the third end of the third switching device 5 is connected to the first end of the material box 1, the second end of the material box 1 is connected to the third end of the first switching device 2, the first end of the first switching valve 7 is connected to the high-pressure gas source 12, and the second end of the first switching valve 7 is connected to the first end of the third switching device 5.

[0035] When loading the material box 1: the first switching device 2 connects the feed port of the conveying medium with the second switching device 3, the second switching device 3 connects the first switching device 2 and the conveying pump 4, and the third switching device 5 connects the conveying pump 4 and the material box 1. After each device is switched into place, the conveying pump 4 is turned on to convey the conveying medium to the material box 1.

[0036] When loading the cleaning liquid: the first switching device 2 connects the feed port of the cleaning liquid (which is the same feed port as the feed port of the above-mentioned conveying medium) and the second switching device 3, the second switching device 3 connects the first switching device 2 and the conveying pump 4, the third switching device 5 connects the conveying pump 4 and the mixing device 6, and the fourth switching device 14 connects the mixing device 6 and the cleaning liquid tank 13. After each device is switched into place, the conveying pump 4 is turned on to convey the cleaning medium to the cleaning liquid tank 13.

[0037] When spraying is performed: the first switching device 2 is connected to the material box 1 and the second switching device 3, the second switching device 3 is connected to the first switching device 2 and the delivery pump 4, the third switching device 5 is connected to the delivery pump 4 and the mixing device 6, and the fourth switching device 14 is connected to the mixing device 6 and the target workplace 15. After each device is switched into place, the delivery pump 4 is turned on to deliver the delivery medium to the mixing device 6 to be mixed with other delivery media in proportion and then pumped to the target workplace 15.

[0038] After the spraying operation is completed, cleaning operations can be carried out regularly to prevent the medium from clogging the pipeline.

[0039] When performing cleaning operations, the cleaning operations mainly include cleaning fluid cleaning operations, pipeline circulation cleaning operations and material box circulation cleaning operations. Specifically:

[0040] When the cleaning operation is performed with the cleaning liquid: the fifth switching device 10 connects the cleaning liquid tank 13 and the delivery pump 4, the third switching device 5 connects the delivery pump 4 and the mixing device 6, and the fourth switching device 14 connects the mixing device 6 and the target workplace 15. After each device is switched in place, the delivery pump 4 is turned on, and the delivery pump 4 delivers the cleaning medium to the mixing device 6, and then pumps it to the target workplace 15. In this way, the main pipelines in the spraying operation system can be cleaned;

[0041] When the pipeline circulation cleaning operation is performed: the fifth switching device 10 connects the cleaning liquid tank 13 and the delivery pump 4, the third switching device 5 connects the delivery pump 4 and the mixing device 6, and the fourth switching device 14 connects the mixing device 6 and the cleaning liquid tank 13. After each device is switched in place, the delivery pump 4 is turned on, and the cleaning medium circulates in the pipeline and the cleaning liquid tank 13, further achieving the cleaning effect;

[0042] When performing a circulation cleaning operation on the material box 1: the fifth switching device 10 connects the cleaning liquid tank 13 and the delivery pump 4, the third switching device 5 connects the delivery pump 4 and the material box 1, and after each device is switched into place, the delivery pump 4 is turned on to deliver the cleaning medium to the material box 1; after the delivery is completed, the first switching device 2 connects the material box 1 and the second switching device 3, the second switching device 3 connects the first switching device 2 and the delivery pump 4, and the third switching device 5 connects the delivery pump 4 and the material box 1, and after each device is switched into place, the delivery pump 4 is turned on, and the cleaning medium circulates in the pipeline and the material box 1, thereby achieving the effect of cleaning the material box 1.

[0043] When performing air blowing operation: the third switching device 5 connects the first switching valve 7 and the mixing device 6, the fourth switching device 14 connects the mixing device 6 and the target workplace 15, after each device is switched into place, the first switching valve 7 is opened, and the high-pressure gas in the high-pressure gas source 12 is transported to the target workplace 15 via the first switching valve 7, the third switching device 5 and the fourth switching device 14, so that the residual medium in the pipeline can be transported to the target workplace 15, thereby achieving the cleaning effect.

[0044] With such an arrangement, the cleaning operations including cleaning liquid cleaning operations, pipeline circulation cleaning operations and material box circulation cleaning operations as well as air blowing operations are adopted, which can timely clean the residual medium in the pipeline of the spraying operation system, so that the pipeline can achieve the specified cleaning effect, thereby solving the problem of pipeline blockage.

[0045] In some embodiments, the spraying system further includes a discharge device 8, a discharge port is provided at the lowest position of the delivery pump 4, the discharge device 8 is connected to the discharge port, and the second end of the first switching valve 7 is also connected to the second end of the delivery pump 4. In this way:

[0046] When the air blowing pump is in operation: open the discharge device 8 and open the first switching valve 7, a large part of the high-pressure gas in the high-pressure gas source 12 is transported to the delivery pump 4 through the first switching valve 7, so that the residual medium in the delivery pump 4 is discharged through the discharge device 8.

[0047] By adopting the above-mentioned setting mode, the residual medium in the delivery pump 4 can be automatically cleaned by high-pressure gas, thereby preventing the residual medium from affecting the working efficiency of the delivery pump 4 and solving the problem of reduced self-priming ability and service life of the delivery pump 4.

[0048] In addition, the spraying system further includes a sealing medium storage tank 11 and a second switching valve 9, wherein a first end of the second switching valve 9 is connected to the sealing medium storage tank 11, and a second end of the second switching valve 9 is connected to a first end of the delivery pump 4.

[0049] When the sealing medium is added, the second switching valve 9 is opened and the delivery pump 4 is operated slowly, so that the sealing medium in the sealing medium storage tank 11 can be injected into the delivery pump 4, thereby achieving the effect of maintaining the pump.

[0050] It can be seen that by adding a second switching valve 9 and a sealing medium storage tank 11 near the delivery pump 4, the sealing medium can be injected during the loading operation to improve the self-priming ability of the delivery pump 4, and the sealing medium can also be injected when the vehicle is put into storage to isolate the internal structure of the delivery pump 4 from oxygen to prevent oxidation and rust.

[0051] Of course, according to actual needs, the first switching device 2, the second switching device 3, the third switching device 5, the fourth switching device 14, the fifth switching device 10, the first switching valve 7 and the second switching valve 9 can all be manual switching valves or electric switching valves.

[0052] When all valves are electric switching valves, the spraying operation system also includes a control device, which is configured to communicate with the first switching device 2, the second switching device 3, the delivery pump 4, the third switching device 5, the mixing device 6, the first switching valve 7, the fourth switching device 14, the fifth switching device 10, the discharge device 8 and the second switching valve 9, and the control device is used to control the first switching device 2, the second switching device 3, the delivery pump 4, the third switching device 5, the mixing device 6, the first switching valve 7, the fourth switching device 14, the fifth switching device 10, the discharge device 8 and the second switching valve 9 to operate.

[0053] The following is a detailed description of the control process of the control device using the cleaning operation as an example.

[0054] When the cleaning operation is performed with the cleaning liquid: the control device controls the valve cores of the fifth switching device 10, the third switching device 5 and the fourth switching device 14 to the corresponding working state, so that the fifth switching device 10 connects the cleaning liquid tank 13 and the delivery pump 4, the third switching device 5 connects the delivery pump 4 and the mixing device 6, and the fourth switching device 14 connects the mixing device 6 and the target workplace 15. After the valve cores of each switching device are switched to the right position, the control device controls the delivery pump 4 to start, so that the delivery pump 4 delivers the cleaning medium to the mixing device 6, and then pumps it to the target workplace 15. In this way, the main pipelines in the spraying operation system can be cleaned;

[0055] When performing pipeline circulation cleaning operation: the control device controls the valve cores of the fifth switching device 10, the third switching device 5 and the fourth switching device 14 to the corresponding working state, the fifth switching device 10 connects the cleaning liquid tank 13 and the delivery pump 4, the third switching device 5 connects the delivery pump 4 and the mixing device 6, and the fourth switching device 14 connects the mixing device 6 and the cleaning liquid tank 13. After the valve cores of each switching device are switched to the right position, the control device controls the delivery pump 4 to start, so that the cleaning medium circulates in the pipeline and the cleaning liquid tank 13, so as to further achieve the cleaning effect;

[0056] When performing the material tank circulation cleaning operation: the control device controls the valve cores of the fifth switching device 10 and the third switching device 5 to the corresponding working state, the fifth switching device 10 connects the cleaning liquid tank 13 and the delivery pump 4, the third switching device 5 connects the delivery pump 4 and the material tank 1, after the valve cores of each switching device are switched into place, the control device controls to open the delivery pump 4 to deliver the cleaning medium to the material tank 1; after the delivery is completed, the control device controls the fifth switching device 10 to close, and controls the valve cores of the first switching device 2, the second switching device 3 and the third switching device 5 to the corresponding working state, so that the first switching device 2 connects the material tank 1 and the second switching device 3, the second switching device 3 connects the first switching device 2 and the delivery pump 4, the third switching device 5 connects the delivery pump 4 and the material tank 1, after the valve cores of each switching device are switched into place, the control device controls to open the delivery pump 4, so that the cleaning medium circulates in the pipeline and the material tank 1, so as to achieve the effect of cleaning the material tank 1.

[0057] Furthermore, the spraying operation system also includes a state interaction device, which is installed on the material box 1 and is configured to communicate with the control device. The state interaction device is used to send information about the state of the material box 1 corresponding to the trigger condition to the control device.

[0058] In some embodiments, the state interaction device is a liquid level detection device, and correspondingly, the state of the material box 1 corresponding to the trigger condition is that the liquid level of the conveying medium in the material box 1 reaches a preset liquid level.

[0059] For example, the preset liquid level can be half of the total liquid level of the material box 1. In this way, when the liquid level of the conveying medium in the material box 1 reaches half of the total liquid level of the material box 1, the liquid level detection device transmits the information to the control device, so that the control device can perform corresponding control operations to complete the cleaning operation. Of course, the preset liquid level can be zero, that is, the state in which the medium in the material box 1 is used up. When the medium in the material box 1 is used up, the cleaning operation can be performed.

[0060] In some embodiments, the state interaction device is a weight detection device, and correspondingly, the state of the material box 1 corresponding to the trigger condition is that the weight of the material box 1 reaches a preset weight. In this way, when the conveying medium in the material box 1 is half used or used up, the weight detection device transmits the information to the control device, so that the control device can perform corresponding control operations to complete the cleaning operation.

[0061] It should be noted that the control functions of the above-mentioned control devices and the state detection functions of the state interaction devices are well known to technical personnel in this field and are not the focus of protection of this application. The focus of this application is to realize the functions of material box loading, cleaning liquid loading, spraying operation, cleaning operation, air blowing operation, air blowing pump operation and sealing medium addition through the connection relationship between the state interaction devices, control devices and various switching valves.

[0062] In some embodiments, a filter is provided in the cleaning liquid tank 13. When the cleaning medium circulates for cleaning between the cleaning liquid tank 13, the fifth switching device 10, the delivery pump 4, the third switching device 5, the mixing device 6 and the fourth switching device 14, the filter is used to filter out particulate matter of a preset particle size.

[0063] Considering that the conveying medium in the spraying operation system is viscous, after working for a period of time, the conveying medium is easy to combine together to form particles or clumps of preset particle size. For these particles or clumps, a filter is set in the cleaning liquid tank 13 to filter out the particles or clumps to prevent the particles or clumps from clogging the pipeline.

[0064] In summary, the present application provides a spraying operation system with a self-cleaning function. The system has a self-cleaning function and can effectively solve problems such as pipe blockage. Not only that, the system has the function of spraying a variety of media, and can add sealing media to the delivery pump 4 to protect the delivery pump 4 from rust and increase the service life of the delivery pump 4.

[0065] A spraying operation vehicle provided in the present application includes the spraying operation system described in the above specific embodiment; other parts of the spraying operation vehicle can refer to related technologies and will not be elaborated in this article.

[0066] It should be noted that, in this specification, relational terms such as first and second are merely used to distinguish one entity from other entities, but do not necessarily require or imply any actual relationship or order between these entities.

[0067] The spraying system and spraying vehicle provided by the present application are introduced in detail above. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the scheme and core ideas of the present application. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present application, several improvements and modifications can be made to the present application, and these improvements and modifications also fall within the scope of protection of the present application.

Claims

1. A spraying system, characterized in that: It includes a material box, a first switching device, a second switching device, a delivery pump, a third switching device, a mixing device, a first switching valve, a fourth switching device, a fifth switching device, a high-pressure gas source and a cleaning liquid tank; The first end of the first switching device is used to connect to the feed port, the second end of the first switching device is connected to the first end of the second switching device, the second end of the second switching device is connected to the first end of the delivery pump, the second end of the delivery pump is connected to the first end of the third switching device, the second end of the third switching device is connected to the first end of the mixing device, the second end of the mixing device is connected to the first end of the fourth switching device, the second end of the fourth switching device is connected to the first end of the cleaning liquid tank, the second end of the cleaning liquid tank is connected to the first end of the fifth switching device, the second end of the fifth switching device is connected to the first end of the delivery pump, and the third end of the fourth switching device is used to connect to the target workplace; The third end of the third switching device is connected to the first end of the material box, and the second end of the material box is connected to the third end of the first switching device; The first end of the first switching valve is connected to the high-pressure gas source, and the second end of the first switching valve is connected to the first end of the third switching device.

2. The spraying system according to claim 1, characterized in that: It also includes a discharge device, a discharge port is provided at the lowest position of the delivery pump, the discharge device is connected to the discharge port, and the second end of the first switching valve is also connected to the second end of the delivery pump.

3. The spraying system according to claim 2, characterized in that: It also includes a sealing medium storage tank and a second switching valve, wherein a first end of the second switching valve is connected to the sealing medium storage tank, and a second end of the second switching valve is connected to the first end of the delivery pump.

4. The spraying system according to claim 3, characterized in that: It also includes a control device, which is configured to communicate with the first switching device, the second switching device, the delivery pump, the third switching device, the mixing device, the first switching valve, the fourth switching device, the fifth switching device, the discharge device and the second switching valve, and the control device is used to control the operation of the first switching device, the second switching device, the delivery pump, the third switching device, the mixing device, the first switching valve, the fourth switching device, the fifth switching device, the discharge device and the second switching valve.

5. The spraying system according to claim 4, characterized in that: It also includes a state interaction device, which is installed on the material box and is configured to be communicatively connected with the control device, and is used to send information about the material box state corresponding to the trigger condition to the control device.

6. The spraying system according to claim 5, characterized in that: The state interaction device is a liquid level detection device, and the material box state corresponding to the trigger condition is that the liquid level of the conveying medium in the material box reaches a preset liquid level.

7. The spraying system according to claim 5, characterized in that: The state interaction device is a weight detection device, and the material box state corresponding to the trigger condition is that the weight of the material box reaches a preset weight.

8. The spraying system according to claim 4, characterized in that: The first switching device, the second switching device, the third switching device, the fourth switching device, the fifth switching device, the first switching valve and the second switching valve are all electric switching valves.

9. The spraying system according to any one of claims 1 to 8, characterized in that: A filter is provided in the cleaning liquid tank, and the filter is used to filter out particulate matter of a preset particle size when the cleaning medium circulates among the cleaning liquid tank, the fifth switching device, the delivery pump, the third switching device, the mixing device and the fourth switching device.

10. A spraying operation vehicle, characterized in that: Comprising a spraying system as described in any one of claims 1-9.

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