Cleaning device

Abstract

This invention discloses a cleaning device, belonging to the field of cleaning technology. The cleaning device includes: a supporting body capable of rotation and movement; and a cleaning assembly comprising a driving component, a protective shell, and a water spray component. The protective shell is fitted onto the driving component and fixedly connected to the supporting body. The driving component is driven to the water spray component, which is located inside the protective shell. The driving component drives the water spray component to rotate within the protective shell, and the water spray component sprays cleaning water onto the workpiece to be cleaned. This cleaning device can accurately rotate to the desired cleaning position on the workpiece to ensure thorough cleaning.

Description

Technical Field

[0001] This invention relates to the field of cleaning technology, and more particularly to cleaning apparatus. Background Technology

[0002] Industrial equipment such as trays, heat exchanger heads, valves, and spiral welded ferrules generate heavy oil and polymer scale during operation. Therefore, these components need to be taken to a cleaning facility for high-pressure water cleaning. Traditional cleaning methods involve manual sweeping with a handheld high-pressure gun. However, considering factors such as operator workload, working environment (high and low temperatures, slippery surfaces), and safety, traditional cleaning methods often incorporate measures to reduce operator workload and ensure safety, such as sacrificing flow rate or lowering pressure. This results in relatively low utilization rates for the high-pressure guns.

[0003] Therefore, automated cleaning devices are currently used to clean scale from industrial equipment. However, since current automated cleaning devices can only clean the same horizontal plane (X-axis, Y-axis) on industrial equipment, if multiple surfaces of industrial equipment need to be cleaned, lifting support frames need to be set up, which is time-consuming and labor-intensive. In other words, current automated cleaning devices cannot perform all-round cleaning of industrial equipment, nor can they move to the position on the industrial equipment that needs to be cleaned with sufficient precision, resulting in poor cleaning effect and inability to guarantee the cleanliness of the industrial equipment.

[0004] In conclusion, a cleaning device is urgently needed to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide a cleaning device that can quickly and accurately deliver the cleaning device to the required cleaning position on the workpiece, and can perform all-round cleaning of the workpiece along the X, Y, and Z axes to ensure the cleanliness of the workpiece.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] Cleaning device, including:

[0008] A supporting body, which is capable of rotation and movement;

[0009] A cleaning assembly includes a drive unit, a protective shell, and a water spraying component. The protective shell is fitted onto the drive unit and fixedly connected to the support body. The drive unit is driven to the water spraying component, which is located inside the protective shell. The drive unit drives the water spraying component to rotate within the protective shell, and the water spraying component sprays cleaning water onto the part to be cleaned.

[0010] Furthermore, the cleaning assembly also includes multiple water supply pipes, and the driving component includes:

[0011] The device comprises a drive body, a fixed shaft, and a rotating output shaft. A protective shell is fitted onto the drive body. The fixed shaft is fixedly disposed within the drive body. The rotating output shaft is rotatably disposed at the output end of the drive body. The fixed shaft is connected to the rotating output shaft, and both the fixed shaft and the rotating output shaft are hollow structures. Multiple water supply pipes are disposed within the hollow structure of the fixed shaft and extend towards the hollow structure of the rotating output shaft, so that the cleaning water in the water supply pipes flows into the hollow structure of the rotating output shaft and then flows to the water spray component.

[0012] Furthermore, the water spray component includes:

[0013] The valve block has a rotating output shaft fixedly connected to it. The rotating output shaft communicates with the first valve port of the valve block and is sealed to the conical surface of the first valve port to deliver the cleaning water into the valve block. The valve block is also provided with a plurality of second valve ports, each of which communicates with the first valve port.

[0014] Multiple liquid dispensing guns, one of which is connected to a second valve port, the liquid dispensing gun being used to spray the cleaning water into the valve block.

[0015] Furthermore, the liquid dispensing gun includes:

[0016] The liquid dispensing gun body and the nozzle are provided. One end of the liquid dispensing gun body is connected to the second valve port, and the other end of the liquid dispensing gun body is provided with the nozzle. The nozzle is rotatable relative to the liquid dispensing gun body. The liquid dispensing gun body has an arc-shaped structure and extends away from the driving member. The liquid dispensing gun body and the second valve port are sealed with a conical surface.

[0017] Furthermore, an anti-loosening component is provided between the second valve port and the dispensing gun body, the anti-loosening component being used to prevent the dispensing gun body from moving relative to the second valve port.

[0018] Furthermore, the anti-loosening component includes:

[0019] The screw gasket and the anti-reverse gasket are both sleeved on the body of the liquid dispensing gun and are both located inside the second valve port;

[0020] A threaded sleeve is fixedly fitted onto the outer side of the threaded washer and the anti-reverse washer. The threaded sleeve can be partially inserted into the second valve port and screwed tightly into the thread of the second valve port.

[0021] Furthermore, the water spray component also includes:

[0022] Mounting plate, which is disposed on the top surface of the valve block and fixedly connected to the valve block;

[0023] Multiple fixing clips are fixedly mounted on the mounting plate, and one of the fixing clips is used to position and support one of the liquid dispensing gun bodies.

[0024] Furthermore, the fixing clip includes:

[0025] A first clamping block and a second clamping block are both disposed on the mounting plate. Both the first clamping block and the second clamping block are provided with arc-shaped notches. The first clamping block and the second clamping block are disposed opposite to each other and can approach each other so that the two arc-shaped notches form a circular through hole. The liquid dispensing gun body is located in the circular through hole and passes through the circular through hole.

[0026] Furthermore, the supporting body is the main structure of the excavator.

[0027] Furthermore, the main structure of the excavator includes:

[0028] A base that is movable;

[0029] A rotating arm is mounted on the base and is rotatable relative to the base. The protective shell is fixedly connected to the free end of the rotating arm.

[0030] The beneficial effects of this invention are as follows:

[0031] By fitting a protective shell onto the drive unit and fixing it to the support body, and driving the drive unit to connect with a water sprayer for spraying cleaning water onto the part to be cleaned, when cleaning is required, the support body is first rotated and moved to move the protective shell, drive unit, and water sprayer together to the part to be cleaned. Then, the drive unit drives the water sprayer to rotate within the protective shell, moving it to the desired cleaning position on the part to be cleaned. Finally, the water sprayer rotates within the designated cleaning area and sprays cleaning water onto the part to be cleaned. The cleaning process involves moving the water spray unit in all directions (front, back, left, right, and up / down) to clean the parts along the X, Y, and Z axes. Simultaneously, the water spray unit undergoes two rotational adjustments: a larger angle for the support body and a smaller angle for the drive unit. This allows the water spray unit to accurately position itself on the parts to be cleaned, ensuring a thorough and effective cleaning. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the cleaning device provided by the present invention. Figure 1 ;

[0033] Figure 2 This is a schematic diagram of the cleaning device (with the protective shell removed) provided by the present invention. Figure 2 ;

[0034] Figure 3 This is a schematic diagram of the cleaning device (excluding the protective shell and mounting plate) provided by the present invention. Figure 3 .

[0035] Figure label:

[0036] 1-Cleaning assembly; 11-Driver; 111-Driver body; 112-Rotating output shaft; 12-Protective shell; 13-Water spray component; 131-Valve block; 132-Dispensing gun; 1321-Dispensing gun body; 1322-Nozzle; 133-Anti-loosening component; 134-Mounting plate; 135-Fixing clamp; 1351-First clamping block; 1352-Second clamping block; 1353-Circular through hole; 136-Hex socket head cap screw; 137-Annular fixing block. Detailed Implementation

[0037] All features disclosed in this specification, or all steps in all disclosed methods or processes, may be combined in any way, except for mutually exclusive features and / or steps.

[0038] Any feature disclosed in this specification, unless specifically stated otherwise, may be replaced by other equivalent or similar features. That is, unless specifically stated otherwise, each feature is merely one example of a series of equivalent or similar features. Throughout this specification, the same reference numerals indicate the same elements.

[0039] To make the technical problems solved by the present invention, the technical solutions adopted, and the technical effects achieved clearer, the technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0040] This embodiment proposes a cleaning device capable of accurately cleaning the areas on a workpiece that require cleaning, ensuring the cleanliness of the workpiece. The workpiece to be cleaned can be a part undergoing machining or a finished product; specifically, it can be industrial equipment such as a tray, heat exchanger head, valve, or spiral welded frame.

[0041] Specifically, such as Figure 1As shown, the cleaning device includes a support body and a cleaning assembly 1. The support body is rotatable and can move on horizontal and uneven surfaces. The cleaning assembly 1 includes a drive component 11, a protective shell 12, and a water spray component 13. The protective shell 12 is fitted onto the drive component 11 and is fixedly connected to the support body. The drive component 11 is driven to the water spray component 13, which is located inside the protective shell 12. The drive component 11 drives the water spray component 13 to rotate within the protective shell 12, and the water spray component 13 sprays cleaning water onto the object to be cleaned. In this embodiment, the cleaning water specifically refers to high-pressure cleaning water, which allows the high-pressure cleaning water to rinse and clean the object. Specifically, the high-pressure cleaning water is cleaning water with a pressure reaching 220 atmospheres.

[0042] By fitting the protective shell 12 onto the drive component 11 and fixing it to the support body, and driving the drive component 11 to be connected to the water spray component 13 for spraying cleaning water onto the part to be cleaned; when the part to be cleaned needs to be cleaned, the support body is first rotated and moved to move the protective shell 12, drive component 11 and water spray component 13 together to the part to be cleaned; then the drive component 11 drives the water spray component 13 to rotate inside the protective shell 12 to rotate the water spray component 13 to the position on the part to be cleaned that needs to be cleaned; then the water spray component 13 rotates in the area of ​​the position to be cleaned and sprays cleaning water onto the part to be cleaned, so that the part to be cleaned can be cleaned. In this way, the water spray component can move forward and backward, left and right, and up and down, enabling comprehensive cleaning of the workpiece along the X, Y, and Z axes. Simultaneously, the water spray component 13 can be rotated twice: first, a larger angle rotation for the supporting body, and second, a smaller angle rotation for the driving component 11. Compared to existing technologies that only perform a single, larger-angle rotation of the water spray component 13, this embodiment allows the water spray component 13 to be rotated more accurately to the desired cleaning position on the workpiece, resulting in better cleaning and ensuring a higher level of cleanliness. Specifically, the X, Y, and Z axes refer to the forward, backward, left, right, and up / down directions centered on the workpiece.

[0043] By positioning the water spray component 13 within the protective housing 12, the water spray component 13 is protected from damage. Furthermore, the protective housing 12 blocks the splashing cleaning water from the water spray component 13, ensuring the blocked water has a strong scouring force and further guaranteeing the cleanliness of the parts to be cleaned. Additionally, the protective housing 12 prevents splashed cleaning water from reaching other parts and affecting their normal operation. In this embodiment, the protective housing 12 is specifically a cylindrical cover structure with an opening on its bottom surface.

[0044] It is worth noting that by driving the water spray component 13 to rotate within the protective housing 12, the following reasons are given: Firstly, by controlling the rotation angle of the driving component 11, the water spray component 13 can be rotated and positioned at a smaller angle, allowing it to accurately rotate to the desired cleaning position on the workpiece. Secondly, after the water spray component 13 has rotated to the desired cleaning position, the driving component 11 can then drive it to rotate within that area, allowing it to spray cleaning water while rotating. This provides a rotational force to the cleaning water, resulting in better rinsing and cleaning of the workpiece. Furthermore, the rotating spray of the water spray component 13 also allows for a larger spray area, enabling faster cleaning of the workpiece and higher cleaning efficiency.

[0045] Furthermore, the cleaning assembly 1 also includes multiple water supply pipes, within which high-pressure cleaning water flows; and, as Figure 2 and Figure 3 As shown, the driving component 11 includes a driving body 111, a fixed shaft, and a rotating output shaft 112. A protective shell 12 is fixedly sleeved on the driving body 111. The fixed shaft is fixedly disposed inside the driving body 111, and the rotating output shaft 112 is rotatably disposed at the output end of the driving body 111. The fixed shaft and the rotating output shaft 112 are sealed together; that is, neither the driving body 111 nor the fixed shaft rotates, but the rotating output shaft 112 can rotate relative to the fixed shaft under the driving action of the driving body 111. The driving body 111 is a common structure in driving components 11 in the prior art, and its driving principle will not be described in detail here. In this embodiment, the driving component 11 can specifically be a hydraulic rotary motor.

[0046] Specifically, both the fixed shaft and the rotating output shaft 112 are hollow structures. Multiple water supply pipes are installed inside the hollow structure of the fixed shaft to facilitate unified management of the multiple water supply pipes. Moreover, the water supply pipes installed inside the hollow structure of the fixed shaft can extend towards the hollow structure of the rotating output shaft 112, so that the cleaning water in the water supply pipes can flow into the hollow structure of the rotating output shaft 112, and the cleaning water flowing into the hollow structure of the rotating output shaft 112 can flow to the water spray component 13, so that the water spray component 13 can spray cleaning water for cleaning the parts to be cleaned. However, the water supply pipes do not extend into the hollow structure of the rotating output shaft 112, thereby avoiding the problem of entanglement of the various water supply pipes extending into the hollow structure of the rotating output shaft 112 during the rotation of the rotating output shaft 112, thus better protecting each water supply pipe.

[0047] Furthermore, such as Figure 2As shown, the water spray component 13 includes a valve block 131 and multiple liquid discharge guns 132; wherein, a rotating output shaft 112 is fixedly connected to the valve block 131, and the rotating output shaft 112 communicates with the first valve port of the valve block 131 so as to deliver the cleaning water in the hollow structure of the rotating output shaft 112 to the valve block 131; and multiple second valve ports, each communicating with the first valve port, are also provided on the valve block 131, and one liquid discharge gun 132 is connected to one second valve port, and the liquid discharge gun 132 is used to spray the cleaning water in the valve block 131 onto the part to be cleaned.

[0048] It is worth noting that, such as Figure 2 and Figure 3 As shown, a fixed connection between the rotating output shaft 112 and the valve block 131 can be achieved by fixing an annular fixing block 137 on the outer circumferential surface of the rotating output shaft 112 and then fixing the valve block 131 on the annular fixing block 137 with four internal hexagonal head screws 136. Alternatively, other structural forms can be used to achieve the fixed connection between the rotating output shaft 112 and the valve block 131. No specific limitation is made here, as long as the fixed connection between the rotating output shaft 112 and the valve block 131 is ensured so that the rotating output shaft 112 can drive the valve block 131 to rotate together.

[0049] Furthermore, a conical seal is formed between the rotating output shaft 112 and the first valve port to ensure good sealing at the connection between the rotating output shaft 112 and the first valve port, thereby preventing the cleaning water inside the hollow structure of the rotating output shaft 112 from overflowing through the connection between the rotating output shaft 112 and the first valve port. The sealing pressure at the connection between the rotating output shaft 112 and the first valve port can reach 2800 Bar to effectively guarantee the sealing performance of the connection between the rotating output shaft 112 and the first valve port.

[0050] Specifically, such as Figure 2 As shown, the liquid dispensing gun 132 includes a liquid dispensing gun body 1321 and a nozzle 1322. One end of the liquid dispensing gun body 1321 is connected to the second valve port, and the other end of the liquid dispensing gun body 1321 is provided with a nozzle 1322 so that the cleaning water in the second valve port in the valve block 131 can flow to the liquid dispensing gun body 1321 and be sprayed onto the part to be cleaned through the nozzle 1322.

[0051] Specifically, the nozzle 1322 can rotate relative to the liquid dispensing gun body 1321. On the one hand, this allows the nozzle 1322 to have a larger spray range, thereby cleaning the parts to be cleaned; on the other hand, it allows the nozzle 1322 to clean the inner wall of the protective shell 12, ensuring the cleanliness of the inner wall of the protective shell 12.

[0052] Furthermore, the liquid dispensing gun body 1321 is specifically a tubular structure, and the liquid dispensing gun body 1321 has an arc-shaped structure and extends away from the driving member 11, so that the arc-shaped structure can appropriately reduce the pressure of the high-pressure cleaning water in the liquid dispensing gun body 1321, so as to avoid the problem of excessive pressure of high-pressure cleaning water damaging the part to be cleaned.

[0053] Specifically, a conical seal is formed between the dispensing gun body 1321 and the second valve port to ensure a good seal at the connection between them, thereby preventing the cleaning water in the second valve port from overflowing through the rotating connection. The sealing pressure at the connection between the dispensing gun body 1321 and the second valve port can reach 2800 Bar, effectively guaranteeing the seal at this connection.

[0054] Furthermore, such as Figure 3 As shown, an anti-loosening component 133 is provided between the second valve port and the dispensing gun body 1321. The anti-loosening component 133 is used to fix the dispensing gun body 1321 relatively stably inside the second valve port to avoid the dispensing gun body 1321 from rotating or moving relative to the second valve port.

[0055] Specifically, the anti-loosening component 133 includes a screw washer, a backstop washer, and a screw sleeve; wherein, the screw washer and the backstop washer are both sleeved on the dispensing gun body 1321, and the screw washer and the backstop washer are both located inside the second valve port; the screw sleeve is fixedly sleeved on the outside of the screw washer and the backstop washer, and the screw sleeve can be partially inserted into the second valve port and screwed tightly with the threads of the second valve port, thereby fixing the dispensing gun body 1321 relatively stably inside the second valve port.

[0056] Furthermore, such as Figure 2 and Figure 3 As shown, the water spray component 13 also includes a mounting plate 134 and multiple fixing clips 135; wherein, the mounting plate 134 is disposed between the valve block 131 and the annular fixing block 137 of the rotating output shaft 112, and the mounting plate 134 is fixedly connected to the valve block 131; that is, the rotating output shaft 112, the mounting plate 134 and the valve block 131 are fixedly connected to each other so that the rotating output shaft 112 can drive the mounting plate 134 and the valve block 131 to rotate; multiple fixing clips 135 are all fixedly disposed on the mounting plate 134, and one fixing clip 135 is used to position and support a liquid dispensing gun body 1321, that is, the liquid dispensing gun body 1321 is positioned and supported by the fixing clip 135.

[0057] Specifically, such as Figure 2 and Figure 3As shown, the fixing clamp 135 includes a first clamping block 1351 and a second clamping block 1352. Both the first clamping block 1351 and the second clamping block 1352 are mounted on the mounting plate 134. Both the first clamping block 1351 and the second clamping block 1352 are provided with arc-shaped notches. The first clamping block 1351 and the second clamping block 1352 are arranged opposite to each other and can approach each other so that the two arc-shaped notches form a circular through hole 1353. The size and structure of the circular through hole 1353 match the size and structure of the liquid dispensing gun body 1321 so that the liquid dispensing gun body 1321 can be located in the circular through hole 1353 and pass through the circular through hole 1353, thereby positioning and supporting the liquid dispensing gun body 1321 by the first clamping block 1351 and the second clamping block 1352. The first clamping block 1351 and the second clamping block 1352 are fixed to the mounting plate 134 by two hexagon socket head cap screws 136. That is, the hexagon socket head cap screws 136 pass through the second clamping block 1352 and the first clamping block 1351 in sequence and can be threaded onto the mounting plate 134.

[0058] In this embodiment, four dispensing guns 132 are provided, as are four anti-loosening components 133 and four fixing clips 135. In other embodiments, the dispensing guns 132, anti-loosening components 133, and fixing clips 135 can be provided in other quantities, as long as the number of dispensing guns 132, anti-loosening components 133, and fixing clips 135 are all the same.

[0059] By including a valve block 131, a liquid gun 132, an anti-loosening component 133, a mounting plate 134, and a fixing clamp 135 in the water spray component 13, multi-directional and stable water spraying can be achieved on the parts to be cleaned, making the structure of the entire water spray component 13 relatively simple; and because the water spray component 13 has fewer parts, the production cost is lower.

[0060] Furthermore, the supporting body is specifically the main structure of the excavator; the main structure of the excavator specifically refers to all other structures on the excavator except for the digging head; the main structure of the excavator has the characteristics of high strength, wide range of movement and large range of rotation angle, so as to drive the entire cleaning assembly 1 to move or rotate to multiple positions, so as to clean the parts to be cleaned at various positions, thereby making the practicality and applicability of the entire cleaning device greater.

[0061] Specifically, the main structure of the excavator includes a base and a rotating arm; the base can move on a horizontal or non-horizontal plane; the rotating arm is mounted on the base and can rotate relative to the base in various directions; and the protective shell 12 is fixedly connected to the free end of the rotating arm by hexagonal head screws 136.

[0062] The specific working process of the cleaning device in this embodiment is as follows:

[0063] First, the base is moved on a horizontal or non-horizontal plane to move the rotating arm, protective shell 12, drive component 11, and water spray component 13 to move the water spray component 13 to the vicinity of the part to be cleaned. Then, the rotating arm is rotated relative to the base to rotate the protective shell 12, drive component 11, and water spray component 13 to rotate. The water spray component 13 is rotated and repositioned for the first time by rotating the rotating arm at a large angle to rotate the water spray component 13 to the part to be cleaned.

[0064] Then, the drive unit 11 drives the rotating output shaft 112 to rotate, and the rotating output shaft 112 drives the mounting plate 134, valve block 131 and liquid gun 132 to rotate, so that the liquid gun 132 rotates to the position on the part to be cleaned that needs to be cleaned; then, the high-pressure cleaning water in the water supply pipe flows sequentially into the hollow structure of the rotating output shaft 112, the first valve port and each of the second valve ports, and then the high-pressure cleaning water in the second valve ports flows into the liquid gun body 1321 of the liquid gun 132, and then is sprayed onto the part to be cleaned through the nozzle 1322, so that the high-pressure clean water can be used to rinse and clean the part to be cleaned.

[0065] During the process of spraying high-pressure cleaning water from the nozzle 1322, the drive component 11 is simultaneously operated to drive the liquid gun 132 to rotate within the area to be cleaned, so that the nozzle 1322 can spray cleaning water while rotating, thereby achieving rotational spray cleaning of the parts to be cleaned, resulting in a better cleaning effect.

[0066] The above description is only a preferred embodiment of the present invention. For those skilled in the art, there will be changes in the specific implementation and application scope based on the ideas of the present invention. The content of this specification should not be construed as a limitation of the present invention.

Claims

1. A cleaning device, characterized in that, include: A supporting body, which is capable of rotation and movement; Cleaning assembly (1), the cleaning assembly (1) includes a drive component (11), a protective shell (12) and a water spray component (13). The protective shell (12) is sleeved on the drive component (11) and fixedly connected to the support body. The drive component (11) is driven to connect with the water spray component (13). The water spray component (13) is located inside the protective shell (12). The drive component (11) is used to drive the water spray component (13) to rotate inside the protective shell (12). The water spray component (13) is used to spray cleaning water onto the part to be cleaned. The cleaning assembly (1) also includes multiple water supply pipes, and the drive unit (11) includes: The drive body (111), fixed shaft and rotating output shaft (112) are provided. The protective shell (12) is sleeved on the drive body (111). The fixed shaft is fixedly installed inside the drive body (111). The rotating output shaft (112) is rotatably installed at the output end of the drive body (111). The fixed shaft is connected to the rotating output shaft (112). Both the fixed shaft and the rotating output shaft (112) are hollow structures. Multiple water supply pipes are installed inside the hollow structure of the fixed shaft and extend towards the hollow structure of the rotating output shaft (112) so that the cleaning water in the water supply pipes flows into the hollow structure of the rotating output shaft (112) and flows to the water spray component (13). The water spray component (13) includes: The valve block (131) is fixedly connected to the rotating output shaft (112), and the rotating output shaft (112) is connected to the first valve port of the valve block (131). The rotating output shaft (112) is sealed to the conical surface of the first valve port to deliver the cleaning water into the valve block (131). The valve block (131) is also provided with a plurality of second valve ports, each connected to the first valve port. Multiple dispensing guns (132), one of the dispensing guns (132) being connected to a second valve port, the dispensing gun (132) being used to spray the cleaning water into the valve block (131); The liquid dispensing gun (132) includes: The dispensing gun body (1321) and the nozzle (1322) are provided. One end of the dispensing gun body (1321) is connected to the second valve port, and the other end of the dispensing gun body (1321) is provided with the nozzle (1322).

2. The cleaning device as described in claim 1, characterized in that, The nozzle (1322) is rotatable relative to the liquid dispensing gun body (1321), which has an arc-shaped structure and extends away from the drive member (11), and the liquid dispensing gun body (1321) and the second valve port are sealed with a conical surface.

3. The cleaning device as described in claim 2, characterized in that, An anti-loosening component (133) is provided between the second valve port and the liquid dispensing gun body (1321). The anti-loosening component (133) is used to prevent the liquid dispensing gun body (1321) from moving relative to the second valve port.

4. The cleaning device as described in claim 3, characterized in that, The anti-loosening component (133) includes: Screw gasket and anti-reverse gasket, both the screw gasket and the anti-reverse gasket are sleeved on the liquid dispensing gun body (1321), and both the screw gasket and the anti-reverse gasket are located inside the second valve port; A threaded sleeve is fixedly fitted onto the outer side of the threaded washer and the anti-reverse washer. The threaded sleeve can be partially inserted into the second valve port and screwed tightly into the thread of the second valve port.

5. The cleaning device as described in claim 2, characterized in that, The water spray component (13) also includes: Mounting plate (134), which is disposed on the top surface of valve block (131) and fixedly connected to valve block (131); Multiple fixing clips (135) are fixedly mounted on the mounting plate (134), and one fixing clip (135) is used to position and support one of the liquid dispensing gun bodies (1321).

6. The cleaning apparatus as described in claim 5, characterized in that, The fixing clip (135) includes: The first clamping block (1351) and the second clamping block (1352) are both disposed on the mounting plate (134). The first clamping block (1351) and the second clamping block (1352) are both provided with arc-shaped notches. The first clamping block (1351) and the second clamping block (1352) are disposed opposite to each other and can approach each other so that the two arc-shaped notches form a circular through hole (1353). The liquid dispensing gun body (1321) is located in the circular through hole (1353) and passes through the circular through hole (1353).

7. The cleaning apparatus according to any one of claims 1-6, characterized in that, The supporting structure is the main structure of the excavator.

8. The cleaning apparatus as described in claim 7, characterized in that, The main structure of the excavator includes: A base that is movable; A rotating arm is disposed on the base and is rotatable relative to the base. The protective shell (12) is fixedly connected to the free end of the rotating arm.

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