Paint spraying equipment for valve machining

By designing a valve processing painting equipment including a fixed frame, a paint device, a movable frame, a transmission belt, a transmission wheel, a sealing mechanism and a plug-in device, the problems of inconvenient replacement of spray heads and poor sealing performance in existing equipment are solved, and the problem of inconvenient replacement of spray heads and poor sealing performance in existing equipment is realized. Efficient production and stable spraying effect.

CN222446969UActive Publication Date: 2025-02-11YANCHENG YIBO SPECIAL MATERIALS TECHNOLOGY CO LTD
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Patent Information

Application Number
CN202421132279.4
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-05-23
Publication Date
2025-02-11
Estimated Expiration
2034-05-23

AI Technical Summary

Technical Problem

The existing paint spraying equipment for valve processing is complicated in the connection and disassembly process of the spray head and pipe, which leads to inconvenient replacement of the spray head, low production efficiency, and poor sealing performance, resulting in paint leakage, affecting the spray quality and normal operation of the equipment.

Method used

A paint spraying equipment for valve processing including a fixing frame, a painting device, a movable frame, a transmission belt, a transmission wheel, a sealing mechanism and a plug-in device is designed. The nozzle can be detachably installed on the movable frame, and the fast replacement is achieved through the clamping device. The sealing mechanism ensures the sealing performance at the pipe connection through the cooperation of multiple components.

Benefits of technology

It realizes rapid replacement and maintenance of spray heads, improves production efficiency, ensures the stability and safety of the spraying process, prevents paint leakage, and improves the spraying quality.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses paint spraying equipment for valve processing, which comprises a fixed frame, a paint spraying device is arranged on the fixed frame, the paint spraying device comprises a spray head, a movable frame, a first motor, a transmission wheel and a transmission belt, the spray head is arranged on the movable frame, the first motor is connected with the transmission wheel, the transmission belt is sleeved on the outer side of the transmission wheel, and a conveying pipe is arranged on one side of the spray head. A connecting pipe is arranged at one end of the conveying pipe, one end of the connecting pipe is connected with an inserting device, a sealing mechanism is arranged on the outer side of the connecting pipe, and the sealing mechanism comprises a first spring, a movable plate, a connecting block, a fixed block, a receding hole, a supporting rod, a push spring, a movable groove, a gasket, a sliding block, a longitudinal groove, a transverse groove and a second spring. The receding hole is formed in the movable plate, the push spring is arranged on the outer side of the supporting rod in a sleeving mode, the movable groove is formed in the side wall of the connecting pipe, the gasket is installed in the connecting pipe, the sliding block is installed in the longitudinal groove, the transverse groove communicates with the longitudinal groove, and the second spring is installed in the transverse groove.
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Description

Technical Field

[0001] The utility model relates to the technical field of spray paint for valve processing, and more specifically, to a spray paint device for valve processing. Background Art

[0002] In the existing technology, the valve processing paint spraying equipment is a mechanical equipment specially used for spraying paint on the valve surface. The main function of this equipment is to spray paint on the valve surface to achieve the functions of rust prevention, corrosion prevention and beautification of the valve. In the valve production process, spraying paint is an important link, which directly affects the performance and service life of the valve.

[0003] However, there are some problems in the use of the paint spraying equipment in the prior art. First, the equipment needs to connect the nozzle and the pipeline together so that the paint can be transported to the nozzle for spraying. However, the connection and disassembly operations between the nozzle and the pipeline in the prior art are usually cumbersome, which makes it impossible to quickly replace the nozzle. Such inconvenience in operation not only reduces production efficiency, but also may affect the quality and stability of spraying during the production process.

[0004] In addition, the structure of the connection between the nozzle and the pipeline in the prior art is usually relatively simple. This simple structure easily leads to relatively poor sealing performance of the connection. Poor sealing performance of the connection will cause paint leakage, which not only wastes materials, but may also affect the quality of spraying and the normal operation of the equipment. At the same time, poor sealing performance may also cause the working environment of the paint spraying equipment to deteriorate, increasing the difficulty of maintenance and cleaning. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] In view of the problems existing in the prior art, the utility model provides a painting device for valve processing to solve the technical problems mentioned in the background technology.

[0007] (II) Technical solution

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a paint spraying device for valve processing, comprising a fixed frame, a paint spraying device is arranged on the fixed frame, the paint spraying device comprises a spray head, a movable frame, a first motor, a transmission wheel and a transmission belt, the spray head is detachably mounted on the movable frame, the movable frame is connected to the transmission belt, the first motor is connected to one of the transmission wheels, the transmission wheel is movably mounted on the inner side of the fixed frame, the transmission belt is sleeved on the outer side of the transmission wheel, a delivery pipe is arranged on one side of the spray head, a connecting pipe is arranged at one end of the delivery pipe, a plug-in device is connected to one end of the connecting pipe, a sealing mechanism is arranged on the outer side of the connecting pipe, and the sealing mechanism comprises a first spring, a movable plate, a connecting block, a fixed The movable plate is movably mounted on the outside of the connecting tube, the connecting block is arranged on one side of the movable plate, the fixed block is connected to the outside of the connecting tube, the movable hole is arranged in the movable plate row, the support rod is movably arranged on the outside of the connecting tube, the push spring is movably mounted on the outside of the support rod, the movable groove is arranged on the side wall of the connecting tube, the washer is detachably installed in the connecting tube, the slider is slidably installed in the longitudinal groove, the longitudinal groove is arranged on the side wall of the connecting tube, the transverse groove is connected to the longitudinal groove, and the second spring is movably installed in the transverse groove.

[0009] The utility model is further configured that a slide rail is provided inside the fixed frame, and the movable frame is slidably mounted on one side of the slide rail.

[0010] The utility model is further configured that a transmission shaft is provided above the fixing frame, and a transmission roller is sleeved on the transmission shaft.

[0011] The utility model is further configured that a sprocket is provided at one end of the transmission shaft, a chain is sleeved on the outer side of the sprocket, a second motor is provided at one side of the fixing frame, and an output end of the second motor is connected to the corresponding sprocket.

[0012] The utility model is further configured that a collecting bin is provided inside the fixing frame, and the collecting bin is arranged directly below the nozzle.

[0013] The utility model is further configured that a sealing groove is provided on the inner side of the connecting pipe, a sealing ring is provided on the outer side of the conveying pipe, and the sealing ring is matched with the sealing groove.

[0014] The utility model is further configured such that the plug-in device includes a rotating sleeve, a clamping mechanism, a reducing plate and a reducing groove, the rotating sleeve can be movably sleeved on the outside of the connecting pipe, the reducing plate is fixedly arranged in the rotating sleeve, and the reducing groove is provided on the reducing plate. The setting of the plug-in device can realize the rapid replacement of the nozzle.

[0015] The utility model is further configured that the clamping mechanism comprises a clamping frame and a clamping slot, one end of the clamping frame is clamped into the clamping slot, and the other end of the clamping frame is movably arranged in the diameter-changing slot.

[0016] (III) Beneficial effects

[0017] Compared with the prior art, the utility model provides a valve processing paint spraying device, which has the following beneficial effects:

[0018] 1. The design of the paint spraying device makes the function of the paint spraying equipment for valve processing more perfect. The nozzle can be detachably installed on the movable frame, which is convenient for quick replacement and maintenance. The connection between the movable frame and the transmission belt allows the nozzle to slide along the slide rail, which improves the flexibility and coverage of the paint spraying. The setting of the delivery pipe and the connecting pipe can transport the paint to the nozzle for spraying.

[0019] 2. The design of the clamping device makes the replacement of the nozzle more convenient and quick. The setting of the rotating sleeve and the reducing plate can drive the movement of the clamping frame through the reducing groove to realize the rapid disassembly and installation of the nozzle. The cooperation of the clamping frame and the clamping groove ensures the stable connection between the nozzle and the pipeline. Through this design, the production efficiency of the painting equipment can be greatly improved and the maintenance cost can be reduced.

[0020] 3. The design of the sealing mechanism ensures the stability and safety of the paint spraying equipment during the spraying process. The design of the first spring and movable plate, connecting block, fixed block and other components effectively improves the sealing performance of the pipeline connection. The setting of the support rod and the push spring provides restoring force and stable connection. The setting of the movable groove and the gasket, as well as the mutually fitting sealing ring and sealing groove, can effectively prevent paint leakage. The setting of the slider and the longitudinal groove and the transverse groove allows the slider to move accordingly when needed, which is convenient for operation. The setting of the second spring provides additional restoring force. Through this design, the stability and safety of the paint spraying equipment during the spraying process can be ensured, and the spraying quality can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the overall structure of a valve processing paint spraying device in the utility model;

[0022] Figure 2 for Figure 1 A schematic diagram of the local enlarged structure at point A in the middle;

[0023] Figure 3 It is a schematic diagram of the overall structure of the second viewing angle of the utility model;

[0024] Figure 4 It is a structural schematic diagram of the clamping device and the sealing mechanism in the utility model;

[0025] Figure 5It is a cross-sectional structural diagram of the clamping device and the sealing mechanism in the utility model;

[0026] Figure 6 This is a schematic diagram of the structure of the clamping device and the sealing mechanism of the utility model without the rotating sleeve part.

[0027] In the figure: 1, fixed frame; 2, nozzle; 3, movable frame; 4, first motor; 5, transmission wheel; 6, transmission belt; 7, conveying pipe; 8, connecting pipe; 9, first spring; 10, movable plate; 11, connecting block; 12, fixed block; 13, clearance hole; 14, support rod; 15, push spring; 16, movable groove; 17, gasket; 18, slider; 19, longitudinal groove; 20, transverse groove; 21, second spring; 22, slide rail; 23, transmission shaft; 24, transmission roller; 25, sprocket; 26, chain; 27, second motor; 28, collecting bin; 29, sealing groove; 30, sealing ring; 31, rotating sleeve; 32, reducing plate; 33, reducing groove; 34, clamping frame; 35, clamping groove. DETAILED DESCRIPTION

[0028] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0029] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0030] In the present invention, unless otherwise specified, directions such as "up" and "down" are usually used in reference to the directions shown in the drawings, or in reference to the vertical, perpendicular or gravity direction; similarly, for ease of understanding and description, "left" and "right" are usually used in reference to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directions are not used to limit the present invention.

[0031] See also Figure 1-6A painting equipment for valve processing comprises a fixed frame 1, a painting device is arranged on the fixed frame 1, the painting device comprises a spray head 2, a movable frame 3, a first motor 4, a transmission wheel 5 and a transmission belt 6, the spray head 2 is detachably mounted on the movable frame 3, the movable frame 3 is connected to the transmission belt 6, the first motor 4 is connected to one of the transmission wheels 5, the transmission wheel 5 is movably mounted on the inner side of the fixed frame 1, the transmission belt 6 is sleeved on the outer side of the transmission wheel 5, a delivery pipe 7 is arranged on one side of the spray head 2, a connecting pipe 8 is arranged at one end of the delivery pipe 7, a plug-in device is connected to one end of the connecting pipe 8, a sealing mechanism is arranged on the outer side of the connecting pipe 8, and the sealing mechanism comprises a first spring 9, a movable plate 10, a connecting block 11, a fixed block 12, a clearance hole 13, a support rod 14, a push spring 15, a movable groove 16, and a gasket 17, slider 18, longitudinal groove 19, transverse groove 20 and second spring 21, the two ends of the first spring 9 are respectively connected to the connecting block 11 and the fixed block 12, the movable plate 10 can be movably sleeved on the outside of the connecting tube 8, the connecting block 11 is arranged on one side of the movable plate 10, the fixed block 12 is connected to the outside of the connecting tube 8, the clearance hole 13 is opened in the movable plate 10, the support rod 14 can be movably arranged on the outside of the connecting tube 8, the push spring 15 can be movably sleeved on the outside of the support rod 14, the movable groove 16 is opened on the side wall of the connecting tube 8, the washer 17 is detachably installed in the connecting tube 8, the slider 18 is slidably installed in the longitudinal groove 19, the longitudinal groove 19 is opened on the side wall of the connecting tube 8, the transverse groove 20 is connected with the longitudinal groove 19, and the second spring 21 is movably installed in the transverse groove 20.

[0032] A slide rail 22 is disposed inside the fixed frame 1 , and the movable frame 3 is slidably mounted on one side of the slide rail 22 .

[0033] A transmission shaft 23 is provided above the fixing frame 1 , and a transmission roller 24 is sleeved on the transmission shaft 23 .

[0034] A sprocket 25 is provided at one end of the transmission shaft 23 , and a chain 26 is sleeved on the outer side of the sprocket 25 . A second motor 27 is provided at one side of the fixing frame 1 , and an output end of the second motor 27 is connected to the corresponding sprocket 25 .

[0035] A collecting bin 28 is provided inside the fixing frame 1 , and the collecting bin 28 is arranged directly below the nozzle 2 .

[0036] A sealing groove 29 is formed on the inner side of the connecting pipe 8 , and a sealing ring 30 is formed on the outer side of the delivery pipe 7 , and the sealing ring 30 fits in the sealing groove 29 .

[0037] In this embodiment, when the device is needed, the valve to be painted is first placed on a placement plate with a hole on the ground, and then the placement plate is placed on the transmission roller 24, and then the second motor 27 is turned on. The second motor 27 drives the corresponding chain 26 to run through the sprocket 25 connected to the output end, and then the chain 26 here drives another sprocket 25 to rotate, and then another sprocket 25 set on one side of the sprocket 25 here will drive other sprockets 25 to rotate through another chain 26 set on the outside, thereby driving all the transmission shafts 23 to rotate, and then driving the transmission roller 24 to rotate the placement plate and the valve prevented therefrom. The paint is transported through the door. After being transported to the top of the collecting bin 28, the second motor 27 is temporarily closed, and then the first motor 4 is turned on. The first motor 4 drives the transmission belt 6 to run through the transmission wheel 5 at the output end, and then drives the other transmission wheels 5 and the movable frame 3 to move. Then the movable frame 3 will slide along the slide rail 22, and then the paint will be transported to the nozzle 2 through the external conveying equipment and sprayed onto the valve surface. Then the excess paint sprayed will pass through the hole opened on the placement plate into the collecting bin 28 arranged below, and then the bottom of the collecting bin 28 and the external storage device will be connected together through a pipeline to realize the recycling of the paint.

[0038] See also Figure 4-6 As an implementation of the plug-in device: the plug-in device includes a rotating sleeve 31, a clamping mechanism, a reducing plate 32 and a reducing groove 33. The rotating sleeve 31 can be movably sleeved on the outside of the connecting pipe 8, the reducing plate 32 is fixedly arranged in the rotating sleeve 31, and the reducing groove 33 is opened on the reducing plate 32.

[0039] The clamping mechanism includes a clamping frame 34 and a clamping slot 35 . One end of the clamping frame 34 is clamped into the clamping slot 35 , and the other end of the clamping frame 34 is movably disposed in the diameter-changing slot 33 .

[0040] More specifically, when the nozzle 2 needs to be replaced, the movable plate 10 is first rotated in the corresponding direction, the movable plate 10 drives the connecting block 11 to move, and then the connecting block 11 cooperates with the fixed block 12 to compress the first spring 9, and at the same time the movable plate 10 drives the clearance hole 13 to move, when the position of the clearance hole 13 corresponds to the position of the support rod 14, the rotating sleeve 31 is pushed upward, the rotating sleeve 31 drives the clamping frame 34 to move through the reducing plate 32, and then the clamping frame 34 moves in the movable groove 16, and at the same time the rotating sleeve 31 drives the slider 18 arranged on the inner side to slide along the longitudinal groove 19 , and then the matching sleeve will push one end of the support rod 14 through the clearance hole 13, and at the same time, the push spring 15 set on the outer side of the support rod 14 will be compressed, and then the rotating sleeve 31 will be rotated, and the slider 18 set on the inner side of the rotating sleeve 31 will slide along the transverse groove 20, and at the same time, the second spring 21 set in the transverse groove 20 will be squeezed by the slider 18, and then the rotating sleeve 31 will drive the reducing plate 32 and the reducing groove 33 to move. Due to the special structural design of the reducing groove 33, when the reducing plate 32 moves, it will drive the clamping frame 34 to move outward and gradually disengage from the clamping groove 35, and then the conveying pipe 7 is released from The nozzle 2 is pulled out from the connecting tube 8, and then a new nozzle 2 is taken out and the delivery tube 7 connected to one end of the nozzle 2 is inserted into the connecting tube 8, so that one end of the delivery tube 7 is against the gasket 17, and then the rotating sleeve 31 is loosened, and the second spring 21 pushes the slider 18 to move in the transverse groove 20, and then the slider 18 moves to the longitudinal groove 19, and at the same time, the rotating sleeve 31 drives the clamping frame 34 to move through the reducing plate 32 and the reducing groove 33, so that one end of the clamping frame 34 is clamped into the clamping groove 35, and then the push spring 15 pushes the support rod 14 to reset, and then the support rod 14 pushes the rotating sleeve 31 to move, At the same time, the rotating sleeve 31 will drive the slider 18 to move in the longitudinal groove 19, and then the rotating sleeve 31 will drive the clamping frame 34 to move in the movable groove 16 through the reducing plate 32, and then the clamping frame 34 will drive the delivery pipe 7 to press the gasket 17 through the clamping groove 35, and at the same time, the multiple sealing rings 30 arranged on the outside of the delivery pipe 7 will be snapped into the corresponding sealing grooves 29 one by one, thereby ensuring a high degree of sealing at the pipeline connection, and then the first spring 9 will push the connecting block 11 and the movable plate 10 to reset, and then the position of the clearance hole 13 no longer corresponds to the position of the support rod 14, thereby forming a stable connection relationship.

[0041] In summary, when the overall equipment is in use or running: when the equipment needs to be used, first place the valve that needs to be painted on a placement plate with a hole on the ground, then place the placement plate on the transmission roller 24, and then turn on the second motor 27. The second motor 27 drives the corresponding chain 26 to run through the sprocket 25 connected to the output end, and then the chain 26 here drives another sprocket 25 to rotate, and then another sprocket 25 set on one side of the sprocket 25 here will drive other sprockets 25 to rotate through another chain 26 set on the outside, thereby driving all the transmission shafts 23 to rotate, and then driving the transmission roller 24 to rotate the placement plate and the upper The paint is transported to the valve to prevent the surface from being damaged. After being transported to the top of the collecting bin 28, the second motor 27 is temporarily closed, and then the first motor 4 is turned on. The first motor 4 drives the transmission belt 6 to run through the transmission wheel 5 at the output end, and then drives the other transmission wheels 5 and the movable frame 3 to move. Then the movable frame 3 will slide along the slide rail 22, and then the paint will be transported to the nozzle 2 through an external conveying device and sprayed onto the valve surface. Then the excess paint sprayed will pass through the hole opened on the placement plate into the collecting bin 28 arranged below, and then the bottom of the collecting bin 28 and the external storage device will be connected together through a pipeline to realize the recycling of the paint.

[0042] When the nozzle 2 needs to be replaced, first rotate the movable plate 10 in the corresponding direction, the movable plate 10 drives the connecting block 11 to move, and then the connecting block 11 cooperates with the fixed block 12 to compress the first spring 9, and at the same time the movable plate 10 drives the clearance hole 13 to move, when the position of the clearance hole 13 corresponds to the position of the support rod 14, push the rotating sleeve 31 upward, the rotating sleeve 31 drives the clamping frame 34 to move through the reducing plate 32, and then the clamping frame 34 moves in the movable groove 16, and at the same time the rotating sleeve 31 drives the slider 18 set on the inner side to slide along the longitudinal groove 19, and then the nozzle 2 needs to be replaced. The sleeve will push one end of the support rod 14 through the clearance hole 13, and the push spring 15 set on the outer side of the support rod 14 will be compressed, and then the rotating sleeve 31 will be rotated, and the slider 18 set on the inner side of the rotating sleeve 31 will slide along the transverse groove 20, and the second spring 21 set in the transverse groove 20 will be squeezed by the slider 18, and then the rotating sleeve 31 will drive the reducing plate 32 and the reducing groove 33 to move. Due to the special structural design of the reducing groove 33, when the reducing plate 32 moves, it will drive the clamping frame 34 to move outward and gradually disengage from the clamping groove 35, and then the conveying pipe 7 is connected. The nozzle 2 is pulled out from the nozzle 8, and then a new nozzle 2 is taken out and the delivery tube 7 connected to one end of the nozzle 2 is inserted into the connecting tube 8, so that one end of the delivery tube 7 is against the gasket 17, and then the rotating sleeve 31 is loosened, and the second spring 21 pushes the slider 18 to move in the transverse groove 20, and then the slider 18 moves to the longitudinal groove 19, and at the same time, the rotating sleeve 31 drives the clamping frame 34 to move through the reducing plate 32 and the reducing groove 33, so that one end of the clamping frame 34 is clamped into the clamping groove 35, and then the push spring 15 pushes the support rod 14 to reset, and then the support rod 14 pushes the rotating sleeve 31 to move, and at the same time When the rotating sleeve 31 drives the slider 18 to move in the longitudinal groove 19, the rotating sleeve 31 drives the clamping frame 34 to move in the movable groove 16 through the reducing plate 32, and then the clamping frame 34 drives the delivery pipe 7 to press the gasket 17 through the clamping groove 35. At the same time, the multiple sealing rings 30 arranged on the outside of the delivery pipe 7 will be engaged with the corresponding sealing grooves 29 one by one, thereby ensuring a high degree of sealing at the pipeline connection. Then the first spring 9 pushes the connecting block 11 and the movable plate 10 to reset, and then the position of the giving hole 13 no longer corresponds to the position of the support rod 14, thereby forming a stable connection relationship.

[0043] In all the schemes mentioned above, the connection between two parts can be selected according to actual conditions by welding, bolt and nut matching connection, bolt or screw connection or other well-known connection methods, which are not described here one by one. In the above, all fixed connections are preferably welded. Although the embodiments of the utility model have been shown and described, it can be understood by ordinary technicians in this field that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the utility model. The scope of the utility model is defined by the attached claims and their equivalents.

Claims

1. A valve processing painting device, comprising a fixing frame (1), characterized in that: The fixed frame (1) is provided with a paint spraying device, and the paint spraying device comprises a spray head (2), a movable frame (3), a first motor (4), a transmission wheel (5) and a transmission belt (6). The spray head (2) is mounted on the movable frame (3), the first motor (4) is connected to the transmission wheel (5), the transmission belt (6) is sleeved on the outside of the transmission wheel (5), a delivery pipe (7) is provided on one side of the spray head (2), a connecting pipe (8) is provided at one end of the delivery pipe (7), a plug-in device is connected at one end of the connecting pipe (8), and a sealing mechanism is provided on the outside of the connecting pipe (8), and the sealing mechanism comprises a first spring (9), a movable plate (10), a connecting block (11), a fixed block (12), a clearance hole (13), and a sealing mechanism. ), a support rod (14), a push spring (15), a movable groove (16), a washer (17), a slider (18), a longitudinal groove (19), a transverse groove (20) and a second spring (21), the first spring (9) having two ends connected to a connecting block (11) and a fixing block (12), a clearance hole (13) being provided on the movable plate (10), the push spring (15) being sleeved on the outer side of the support rod (14), the movable groove (16) being provided on the side wall of the connecting pipe (8), the washer (17) being installed in the connecting pipe (8), the slider (18) being installed in the longitudinal groove (19), the transverse groove (20) being communicated with the longitudinal groove (19), and the second spring (21) being installed in the transverse groove (20).

2. The valve processing paint spraying equipment according to claim 1 is characterized in that: A slide rail (22) is provided on the inner side of the fixed frame (1), and the movable frame (3) is slidably mounted on one side of the slide rail (22).

3. The valve processing paint spraying equipment according to claim 2 is characterized in that: A transmission shaft (23) is provided above the fixed frame (1), and a transmission roller (24) is sleeved on the transmission shaft (23).

4. The valve processing paint spraying equipment according to claim 3 is characterized in that: A sprocket (25) is provided at one end of the transmission shaft (23), a chain (26) is sleeved on the outer side of the sprocket (25), a second motor (27) is provided on one side of the fixing frame (1), and an output end of the second motor (27) is connected to the corresponding sprocket (25).

5. The valve processing paint spraying equipment according to claim 4 is characterized in that: A collecting bin (28) is provided on the inner side of the fixing frame (1), and the collecting bin (28) is arranged directly below the spray head (2).

6. The valve processing paint spraying equipment according to claim 1 is characterized by: A sealing groove (29) is provided on the inner side of the connecting pipe (8), a sealing ring (30) is provided on the outer side of the delivery pipe (7), and the sealing ring (30) fits in the sealing groove (29).

7. A valve processing painting equipment according to any one of claims 1 to 6, characterized in that: The plug-in device comprises a rotating sleeve (31), a clamping mechanism, a reducing plate (32) and a reducing groove (33); the rotating sleeve (31) is movably sleeved on the outside of the connecting pipe (8); the reducing plate (32) is fixedly arranged in the rotating sleeve (31); and the reducing groove (33) is provided on the reducing plate (32).

8. The valve processing paint spraying equipment according to claim 7 is characterized in that: The clamping mechanism comprises a clamping frame (34) and a clamping slot (35); one end of the clamping frame (34) is clamped into the clamping slot (35), and the other end of the clamping frame (34) is movably arranged in the diameter-changing slot (33).