Handheld spray gun for high-pressure cleaning

Abstract

The utility model relates to a handheld spray gun for high-pressure cleaning. Comprising a gun body and a gun head, a control valve assembly is arranged in an inner cavity of the gun body and the gun head, a water inlet channel is formed in the center of the holding handle, a hinged protruding block is integrally formed on the upper portion of the holding handle, and the trigger is connected to the hinged protruding block in a pivoted mode. A water outlet branch pipe and a water wheel driving assembly are installed on the holding handle, and a brush structure is installed at the outer end of the water wheel driving assembly. The water wheel driving assembly comprises a pipe shell structure, a second driving rotating shaft is rotationally connected into the pipe shell structure, and a driving water wheel is installed at the inner end of the second driving rotating shaft; the device further comprises an installation protection box, a buffer water tank is installed in the installation protection box, a hollow rotating shaft and a first driving rotating shaft are rotationally connected in the installation protection box, the inner end of the hollow rotating shaft is communicated with the buffer water tank, and the outer end of the hollow rotating shaft is connected with the brush structure. And the transmission gear pair is arranged between the hollow rotating shaft and the first driving rotating shaft. According to the handheld spray gun, the functions of the handheld spray gun are enriched, the operation process is simple, a worker does not need to frequently put down the spray gun to take up the brush for washing and brushing work, and the labor intensity of the worker is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of cleaning equipment, and particularly relates to a hand-held spray gun for high-pressure cleaning. Background Art

[0002] During the industrial production process, a pollution layer or covering layer formed on the surface of an object due to physical, chemical, or biological actions is called dirt. The process of removing these pollutants or covering layers to restore the original surface condition is called cleaning, which is generally carried out by flushing the surface of the material with a high-pressure nozzle.

[0003] High-pressure cleaning is to drive a high-pressure piston pump to work through a power device, thereby generating high-pressure water or high-pressure cleaning liquid to flush an object, strip and wash away the dirt, so as to achieve the purpose of cleaning the surface of the object. Structurally, it mainly includes components such as a water tank, a high-pressure piston pump, a high-pressure water pipe, and a high-pressure spray gun. High-pressure cleaning has the advantages of simple working principle, convenient operation, and flexible and reliable use, and is widely used in various industries.

[0004] During the actual working process, when using a high-pressure spray gun to clean a target object, in addition to performing high-pressure flushing operations, brushing operations are often required. However, the existing high-pressure spray guns have a single cleaning function and can only perform flushing operations. When brushing operations are needed, the high-pressure spray gun needs to be turned off, and then a brush needs to be picked up separately for brushing operations, and a flushing operation is required after the brushing operation. The operation process is cumbersome, the work is inconvenient, and it is easy to cause fatigue to the staff. Therefore, it is urgent to design a hand-held spray gun for high-pressure cleaning to solve the above problems. Summary of the Utility Model

[0005] The utility model provides a hand-held spray gun for high-pressure cleaning with a reasonable structural design to solve the technical problems existing in the known technology. The utility model can perform high-pressure flushing on a target object and can also perform brushing operations on the target object, solving the problem of the single cleaning function of the traditional high-pressure spray gun. The operation process is simple and the cleaning effect is good, improving the working efficiency of the spray gun and reducing the labor intensity of the staff.

[0006] The technical solution adopted by the present utility model to solve the technical problems existing in the known technology is as follows: A hand-held spray gun for high-pressure cleaning includes a gun body and a gun head that are butt-jointed and installed. A control valve assembly is arranged in the inner cavity formed by the gun body and the gun head. It also includes a holding handle connected to the gun body. An inlet water passage communicating with the inner cavity of the gun body is arranged at the center of the holding handle. An articulated convex block is integrally formed on the upper part of the holding handle. It also includes a trigger pivotally connected to the articulated convex block and connected to the control valve assembly; A water outlet branch pipe communicating with the inlet water passage is installed on the holding handle. A water wheel driving assembly is connected and communicated to the water outlet branch pipe. A brush structure is installed at the outer end of the water wheel driving assembly; The water wheel driving assembly includes a pipe shell structure butt-jointed and installed with the water outlet branch pipe. A second driving rotating shaft is rotatably connected in the pipe shell structure. A driving water wheel is installed at the inner end of the second driving rotating shaft; It also includes an installation protection box. A buffer water tank communicated with the pipe shell structure is installed in the installation protection box. A hollow rotating shaft and a first driving rotating shaft that are rotatably connected to it and arranged in parallel are penetrated in the installation protection box. The first driving rotating shaft is connected to the second driving rotating shaft. The inner end of the hollow rotating shaft is connected and communicated with the buffer water tank, and the outer end is connected to the brush structure; It also includes a transmission gear pair installed between the hollow rotating shaft and the first driving rotating shaft.

[0007] The advantages and positive effects of the present utility model are as follows: The present utility model provides a hand-held spray gun for high-pressure cleaning. By setting up a connected holding handle, gun body and gun head, the main structure of the spray gun is formed. Cooperating with the control valve assembly and the trigger, the opening and closing state of the main structure of the spray gun can be controlled, thereby facilitating the realization of high-pressure flushing operations; By setting up a water outlet branch pipe communicating with the inlet water passage, as well as a water wheel driving assembly and a brush structure connected to the water outlet branch pipe, the brush structure can be driven to rotate by high-pressure water after closing the water outlet passage of the main structure of the spray gun, and then the parts that have completed high-pressure flushing can be washed, enriching the functions of the hand-held spray gun. The operation process is simple, and there is no need for the staff to frequently put down the spray gun and pick up the brush for flushing and washing work, reducing the labor intensity of the staff.

[0008] Preferably: The water wheel driving assembly also includes a rotating shaft seat fixedly connected in the installation protection box. The hollow rotating shaft is rotatably connected to the rotating shaft seat through a rolling bearing. A passage joint that is connected and communicated with the hollow rotating shaft and has a clearance fit is buckled and installed on the rotating shaft seat. The passage joint is threadedly connected to the water outlet installed on the buffer water tank.

[0009] Preferably, the shell structure includes a butt-jointed water inlet pipe, a first adapter sleeve, a second adapter sleeve, and a Y-shaped water outlet pipe that are butt-jointed and installed in sequence from the inside to the outside. A rotating shaft sleeve is provided at the center of the first adapter sleeve. The second driving rotating shaft is inserted into the rotating shaft sleeve and is rotatably connected thereto through a rolling bearing. A plurality of installation rib plates evenly distributed in the circumferential direction are fixedly connected between the rotating shaft sleeve and the first adapter sleeve. The Y-shaped water outlet pipe has a Y-shaped structure. The two outer end water outlets of the Y-shaped water outlet pipe are connected to the buffer water tank in a communicating manner. A pipe sleeve portion is provided at the center of the Y-shaped water outlet pipe. The second driving rotating shaft is inserted into the pipe sleeve portion and is rotatably connected thereto through a rolling bearing. A waterproof sleeve is installed between the pipe sleeve portion and the rotating shaft sleeve.

[0010] Preferably, the brush structure includes a fixed brush disk fixedly connected to the outer end of the installation protection box, and further includes a rotating brush disk key-connected to the outer end of the hollow rotating shaft. The fixed brush disk and the rotating brush disk are in clearance fit.

[0011] Preferably, it further includes an auxiliary support member installed at the outer end of the installation protection box. The auxiliary support member includes a sleeve portion installed at the outer end of the installation protection box. A plurality of support rods distributed in the circumferential direction and having an L-shaped structure are installed on the outer peripheral wall of the sleeve portion. The support rods are elastic. Ball heads are provided at the ends of each support rod.

[0012] Preferably, the control valve assembly includes a valve seat screwed into the gun body and having a plurality of water outlet grooves distributed in the circumferential direction on the outer end peripheral wall thereof. It further includes a valve core rod coaxially inserted into the valve seat. A valve head having a frustum structure is provided at one end of the valve core rod, and a sealing ring is sleeved on the valve head. The other end of the valve core rod penetrates through the gun body and the trigger and is screwed with an adjusting nut. A plurality of spring limiting blocks adjacent to the valve head are integrally formed on the outer peripheral wall of the valve core rod. It further includes a compression spring sleeved on the valve core rod. One end of the compression spring is in tight contact with the plurality of spring limiting blocks, and the other end is in tight contact with a gasket sleeved on the valve core rod.

[0013] Preferably, it further includes a connecting pipe port screwed and installed at the liquid inlet port of the holding handle for installing a high-pressure water pipe, and further includes an anti-slip rubber sleeve sleeved on the holding handle, and a plurality of anti-slip protrusions are provided on the anti-slip rubber sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic cross-sectional structure view of the present invention;

[0015] Figure 2 is a schematic cross-sectional structure view of the water wheel drive assembly in the present invention;

[0016] Figure 3 is a schematic three-dimensional structure view of the brush structure in the present invention;

[0017] Figure 4It is a partial structural exploded schematic diagram of the water wheel drive assembly in the utility model;

[0018] Figure 5 It is a schematic diagram of the exploded structure of the control valve assembly in the utility model.

[0019] In the figure: 1. pipe connection port; 2. grip handle; 3. water inlet passage; 4. anti-slip rubber sleeve; 5. hinged protrusion; 6. trigger; 7. gun body; 8. gun head cover; 9. gun head; 10. control valve assembly; 10-1. water outlet groove; 10-2. valve seat; 10-3. valve head; 10-4. valve core rod; 10-5. gasket; 10-6. adjusting nut; 10-7. compression spring; 10-8. spring limit block; 11. brush structure; 11-1. fixed brush plate; 11-2. rotating brush plate; 12. auxiliary support member; 1 3. Water wheel drive assembly; 13-1. Transmission gear pair; 13-2. First drive shaft; 13-3. Buffer water tank; 13-4. Second drive shaft; 13-5. Shaft sleeve; 13-6. First adapter sleeve; 13-7. Driving water wheel; 13-8. Docking water inlet pipe; 13-9. Installing ribs; 13-10. Second adapter sleeve; 13-11. Y-type water outlet pipe; 13-12. Installing protection box; 13-13. Passage joint; 13-14. Shaft seat; 13-15. Hollow shaft; 14. Water outlet branch pipe. DETAILED DESCRIPTION

[0020] In order to further understand the content, features and effects of the present invention, the following embodiments are described in detail as follows:

[0021] See also Figure 1 The handheld spray gun for high-pressure cleaning of the utility model comprises a gun body 7 and a gun head 9 which are butt-mounted, a control valve assembly 10 is arranged in the inner cavity formed by the gun body 7 and the gun head 9, a gripping handle 2 connected to the gun body 7, a water inlet passage 3 communicating with the inner cavity of the gun body 7 is arranged at the center of the gripping handle 2, a hinged protrusion 5 is integrally formed on the upper part of the gripping handle 2, and a trigger 6 connected to the control valve assembly 10 which is pivotally connected to the hinged protrusion 5. This embodiment also comprises a pipe connection port 1 which is screwed and installed at the liquid inlet port of the gripping handle 2 for installing a high-pressure water pipe, and an anti-slip rubber sleeve 4 which is sleeved on the gripping handle 2, and a plurality of anti-slip protrusions are arranged on the anti-slip rubber sleeve 4.

[0022] like Figure 1 As shown, a water outlet branch pipe 14 connected to the water inlet passage 3 is installed on the gripping handle 2, a water wheel driving assembly 13 is connected to the water outlet branch pipe 14, and a brush structure 11 is installed on the outer end of the water wheel driving assembly 13.

[0023] like Figure 5As shown in the figure, the above-mentioned control valve assembly 10 includes a valve seat 10-2 that is inserted into the gun body 7 and threadedly connected thereto. A plurality of groups of water outlet grooves 10-1 are circumferentially distributed on the outer end wall of the valve seat 10-2. It also includes a valve core rod 10-4 coaxially inserted into the valve seat 10-2. A valve head 10-3 having a frustum structure is provided at one end of the valve core rod 10-4, and a sealing ring is sleeved on the valve head 10-3. The other end of the valve core rod 10-4 passes through the gun body 7 and the trigger 6 and is threadedly connected with an adjusting nut 10-6. A plurality of groups of spring limiting blocks 10-8 adjacent to the valve head 10-3 are integrally formed on the outer peripheral wall of the valve core rod 10-4. It also includes a compression spring 10-7 sleeved on the valve core rod 10-4. One end of the compression spring 10-7 is in tight contact with the plurality of groups of spring limiting blocks 10-8, and the other end is in tight contact with a gasket 10-5 sleeved on the valve core rod 10-4.

[0024] A sealing ring is provided between the valve seat 10-2 and the gun head 9, and a sealing ring is provided between the gun body 7 and the valve core rod 10-4. A gun head sleeve 8 is sleeved on the gun head 9, and the gun head sleeve 8 is made of rubber material.

[0025] As Figure 2 As shown in the figure, the above-mentioned water wheel drive assembly 13 includes a shell structure docked and installed with the water outlet branch pipe 14. A second drive rotating shaft 13-4 is rotatably connected in the shell structure, and a drive water wheel 13-7 is installed at the inner end of the second drive rotating shaft 13-4. It also includes an installation protection box 13-12. A buffer water tank 13-3 communicated with the shell structure is installed in the installation protection box 13-12. A hollow rotating shaft 13-15 and a first drive rotating shaft 13-2 that are rotatably connected to the installation protection box 13-12 and arranged in parallel are inserted into the installation protection box 13-12. The first drive rotating shaft 13-2 is connected to the second drive rotating shaft 13-4 through a coupling. The inner end of the hollow rotating shaft 13-15 is communicated with the buffer water tank 13-3, and the outer end is connected to the brush structure 11. The water wheel drive assembly 13 also includes a rotating shaft seat 13-14 fixed in the installation protection box 13-12. The hollow rotating shaft 13-15 is rotatably connected to the rotating shaft seat 13-14 through a rolling bearing. A passage joint 13-13 that is communicated with the hollow rotating shaft 13-15 and has a clearance fit is buckled and installed on the rotating shaft seat 13-14. The passage joint 13-13 is threadedly connected to the water outlet installed on the buffer water tank 13-3.

[0026] The water wheel drive assembly 13 also includes a transmission gear pair 13-1 installed between the hollow rotating shaft 13-15 and the first drive rotating shaft 13-2. The above-mentioned transmission gear pair 13-1 includes a driving gear key-connected to the first drive rotating shaft 13-2, and also includes a driven gear key-connected to the hollow rotating shaft 13-15. The driving gear and the driven gear are meshed with each other.

[0027] Among them, the above-mentioned buffer water tank 13-3 includes an inner cylinder and an outer cylinder sleeved coaxially. The inner cylinder and the outer cylinder form an annular inner cavity. The above-mentioned first driving rotating shaft 13-2 penetrates through the buffer water tank 13-3 and is arranged inside the inner cylinder, thereby preventing the first driving rotating shaft 13-2 from contacting the liquid.

[0028] For further reference Figure 2 and Figure 4 , the above-mentioned shell structure includes a butt joint water inlet pipe 13-8, a first adapter sleeve 13-6, a second adapter sleeve 13-10, and a Y-shaped water outlet pipe 13-11 that are butt joint installed in sequence from the inside to the outside. A rotating shaft sleeve 13-5 is arranged at the center of the first adapter sleeve 13-6. The second driving rotating shaft 13-4 is arranged inside the rotating shaft sleeve 13-5 and is rotationally connected to it through a rolling bearing. A plurality of groups of installation rib plates 13-9 evenly distributed in the circumferential direction are fixedly connected between the rotating shaft sleeve 13-5 and the first adapter sleeve 13-6; the Y-shaped water outlet pipe 13-11 is of a Y-shaped structure. The two outer water outlets of the Y-shaped water outlet pipe 13-11 are connected and communicated with the buffer water tank 13-3. A pipe sleeve part is arranged at the center of the Y-shaped water outlet pipe 13-11. The second driving rotating shaft 13-4 is arranged inside the pipe sleeve part and is rotationally connected to it through a rolling bearing; a waterproof sleeve is installed between the pipe sleeve part and the rotating shaft sleeve 13-5. In addition, the above-mentioned installation protection box 13-12 includes a front shell and a rear end cover that are butted and buckled. An inlet connected to the buffer water tank 13-3 is opened on the rear end cover. The water outlet of the Y-shaped water outlet pipe 13-11 is butted and installed with the above-mentioned inlet.

[0029] As Figure 3 shown, the above-mentioned brush structure 11 includes a fixed brush disk 11-1 fixedly connected to the outer end of the installation protection box 13-12, and also includes a rotating brush disk 11-2 key-connected to the outer end of the hollow rotating shaft 13-15. The fixed brush disk 11-1 and the rotating brush disk 11-2 are in clearance fit. Among them, the above-mentioned fixed brush disk 11-1 is of an annular structure.

[0030] As Figure 3 shown, this embodiment also includes an auxiliary support member 12 installed at the outer end of the installation protection box 13-12. The auxiliary support member 12 includes a sleeve part installed at the outer end of the installation protection box 13-12. A plurality of groups of support rods distributed in the circumferential direction and having an L-shaped structure are installed on the outer peripheral wall of the sleeve part. The support rods have elasticity; a spherical head is arranged at the end of each support rod. The auxiliary support member 12 can play a buffering role and at the same time play a role in protecting the brush structure 11.

[0031] Working principle:

[0032] During the actual working process, when high-pressure flushing is required, the operator holds the holding handle 2 and presses the trigger 6, pulling the valve core rod 10-4 backward, thereby opening the water outlet passage of the valve seat 10-2. At this time, the compression spring 10-7 is in a compressed state; the high-pressure water enters the water inlet passage 3, the inner cavity of the gun body 7, and the inner cavity of the valve seat 10-2 in sequence from the connection nozzle 1, and flows into the gun head 9 through the water outlet groove 10-1 opened at the end of the valve seat 10-2, and finally flows out from the water outlet opened at the end of the gun head 9 and sprays onto the part to be flushed, thereby realizing the high-pressure flushing operation; when it is necessary to brush the part after high-pressure flushing, release the pressed trigger 6, and the valve core rod 10-4 is reset under the action of the compression spring 10-7 so that the valve head 10-3 blocks the water outlet passage of the valve seat 10-2; then the high-pressure liquid entering the water inlet passage 3 flows into the water outlet branch pipe 14, and the high-pressure liquid entering the water outlet branch pipe 14 impacts the driving water wheel 13-7 in the water wheel drive assembly 13, causing the driving water wheel 13-7 to rotate and then driving the second driving rotating shaft 13-4 to rotate. Under the transmission action of the transmission gear pair 13-1 and the first driving rotating shaft 13-2, the rotating second driving rotating shaft 13-4 can drive the hollow rotating shaft 13-15 to rotate, and then drive the rotating brush disk 11-2 installed at the outer end of the hollow rotating shaft 13-15 to rotate. At the same time, the water flow impacting the driving water wheel 13-7 flows into the buffer water tank 13-3 from the Y-shaped water outlet pipe 13-11 in the pipe shell structure, and flows out from the passage joint 13-13 and the hollow rotating shaft 13-15, flushing the part brushed by the brush structure 11, realizing the brushing operation, enriching the functions of the hand-held spray gun, with a simple operation process, without the operator frequently putting down the spray gun and picking up the brush for flushing and brushing work, reducing the labor intensity of the operator.

Claims

1. A hand-held spray gun for high-pressure cleaning, characterized in that: It includes a gun body (7) and a gun head (9) that are docked and installed. A control valve assembly (10) is provided in the inner cavity formed by the gun body (7) and the gun head (9). It also includes a holding handle (2) connected to the gun body (7). An inlet water passage (3) that communicates with the inner cavity of the gun body (7) is provided at the center of the holding handle (2). A hinged protrusion (5) is integrally formed on the upper part of the holding handle (2). It also includes a trigger (6) pivotally connected to the hinged protrusion (5) and connected to the control valve assembly (10); a water outlet branch pipe (14) communicating with the inlet water passage (3) is installed on the holding handle (2). A water wheel drive assembly (13) is connected and communicated to the water outlet branch pipe (14). A brush structure (11) is installed at the outer end of the water wheel drive assembly (13); the water wheel drive assembly (13) includes a pipe shell structure that is docked and installed with the water outlet branch pipe (14). A second drive rotating shaft (13-4) is rotatably connected in the pipe shell structure. A drive water wheel (13-7) is installed at the inner end of the second drive rotating shaft (13-4); it also includes an installation protection box (13-12). A buffer water tank (13-3) communicated with the pipe shell structure is installed in the installation protection box (13-12). A hollow rotating shaft (13-15) and a first drive rotating shaft (13-2) that are rotatably connected to it and arranged in parallel are penetrated in the installation protection box (13-12). The first drive rotating shaft (13-2) is connected to the second drive rotating shaft (13-4). The inner end of the hollow rotating shaft (13-15) is connected and communicated to the buffer water tank (13-3), and the outer end is connected to the brush structure (11); it also includes a transmission gear pair (13-1) installed between the hollow rotating shaft (13-15) and the first drive rotating shaft (13-2).

2. The hand-held spray gun for high-pressure cleaning according to claim 1, characterized in that: The water wheel drive assembly (13) also includes a rotating shaft seat (13-14) fixedly connected in the installation protection box (13-12). The hollow rotating shaft (13-15) is rotatably connected to the rotating shaft seat (13-14) through a rolling bearing. A passage joint (13-13) that is connected and communicated with the hollow rotating shaft (13-15) and has a clearance fit is buckled and installed on the rotating shaft seat (13-14). The passage joint (13-13) is threadedly connected to the water outlet installed on the buffer water tank (13-3).

3. The hand-held spray gun for high-pressure cleaning according to claim 1, characterized in that: The shell structure includes a butt - joint inlet pipe (13 - 8), a first adapter sleeve (13 - 6), a second adapter sleeve (13 - 10) and a Y - shaped outlet pipe (13 - 11) which are butt - joint installed in sequence from inside to outside. A rotating shaft sleeve (13 - 5) is arranged at the center of the first adapter sleeve (13 - 6). The second driving rotating shaft (13 - 4) is inserted into the rotating shaft sleeve (13 - 5) and is rotatably connected to it through a rolling bearing. A plurality of groups of installation rib plates (13 - 9) evenly distributed in the circumferential direction are fixedly connected between the rotating shaft sleeve (13 - 5) and the first adapter sleeve (13 - 6); The Y - shaped outlet pipe (13 - 11) is of a Y - shaped structure. The two outer - end water outlets of the Y - shaped outlet pipe (13 - 11) are connected and communicated with the buffer water tank (13 - 3). A pipe sleeve part is arranged at the center of the Y - shaped outlet pipe (13 - 11). The second driving rotating shaft (13 - 4) is inserted into the pipe sleeve part and is rotatably connected to it through a rolling bearing; A waterproof sleeve is installed between the pipe sleeve part and the rotating shaft sleeve (13 - 5).

4. The hand-held spray gun for high-pressure cleaning according to claim 1, characterized in that: The brush structure (11) includes a fixed brush disk (11 - 1) fixedly connected to the outer end of the installation protection box (13 - 12), and also includes a rotating brush disk (11 - 2) key - connected to the outer end of the hollow rotating shaft (13 - 15). The fixed brush disk (11 - 1) and the rotating brush disk (11 - 2) are in clearance fit.

5. The hand-held spray gun for high-pressure cleaning according to claim 1, characterized in that: It also includes an auxiliary support member (12) installed at the outer end of the installation protection box (13 - 12). The auxiliary support member (12) includes a sleeve part installed at the outer end of the installation protection box (13 - 12). A plurality of groups of struts distributed in the circumferential direction and having an L - shaped structure are installed on the outer peripheral wall of the sleeve part. The struts are elastic; Ball heads are arranged at the ends of each strut.

6. The hand-held spray gun for high-pressure cleaning according to claim 1, characterized in that: The control valve assembly (10) includes a valve seat (10 - 2) inserted into and screwed to the gun body (7). A plurality of groups of water outlet through - grooves (10 - 1) distributed in the circumferential direction are opened on the outer - end peripheral wall of the valve seat (10 - 2); It also includes a valve core rod (10 - 4) coaxially inserted into the valve seat (10 - 2). A valve head (10 - 3) in the shape of a frustum of a cone is arranged at one end of the valve core rod (10 - 4). A sealing ring is sleeved on the valve head (10 - 3); The other end of the valve core rod (10 - 4) penetrates through the gun body (7) and the trigger (6) and is screwed with an adjusting nut (10 - 6). A plurality of groups of spring limit blocks (10 - 8) adjacent to the valve head (10 - 3) are integrally formed on the outer peripheral wall of the valve core rod (10 - 4). It also includes a compression spring (10 - 7) sleeved on the valve core rod (10 - 4). One end of the compression spring (10 - 7) is in tight contact with the plurality of groups of spring limit blocks (10 - 8), and the other end is in tight contact with a gasket (10 - 5) sleeved on the valve core rod (10 - 4).

7. The hand-held spray gun for high-pressure cleaning according to claim 1, characterized in that: It also includes A connection port (1) screwed and installed at the liquid inlet port of the holding handle (2) for installing a high - pressure water pipe. It also includes an anti - slip rubber sleeve (4) sleeved on the holding handle (2). A number of anti - slip protrusions are arranged on the anti - slip rubber sleeve (4).

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