Electrostatic spraying pressure adjusting device

Abstract

The utility model discloses an electrostatic spraying pressure adjusting device which comprises a cylindrical sleeve body, a connecting sleeve body part extending upwards is formed in the middle of a top plate of the cylindrical sleeve body, external threads are formed on the outer side wall of the connecting sleeve body part, and the middle of an air outlet connecting pipe is inserted into the connecting sleeve body part in a sleeved mode. The lower portion of the air outlet connecting pipe extends into the cylindrical sleeve body, a radial extending edge is formed on the outer side wall of the middle of the air outlet connecting pipe and abuts against the top face of the connecting sleeve body in a pressing mode, and a stepped through hole is formed in the middle of the outer connecting sleeve body. The stepped through hole comprises a lower large-diameter hole section, a middle connecting hole section and an upper small-diameter hole section, wherein the inner diameters of the lower large-diameter hole section, the middle connecting hole section and the upper small-diameter hole section are gradually reduced from bottom to top. The pressure regulating valve can be installed on a pipeline of an air inlet pipe, can regulate the pressure of air conveyed in the air inlet pipe, is convenient to regulate the pressure, is convenient to repair and maintain due to the fact that corresponding parts are detachable, can realize double pressure regulation by being matched with an air pump with a pressure regulating function, and is better in pressure regulating effect.

Description

Technical fields:

[0001] This utility model relates to the field of pressure regulating equipment technology, and more specifically to an electrostatic spraying pressure regulating device. Background technology:

[0002] In existing electrostatic spraying equipment, there is generally an air inlet pipe and a powder inlet pipe. The gas pressure of the air inlet pipe directly affects the depth of the spray coating. The higher the pressure, the darker the color of the spray coating, and the lower the pressure, the lighter the color of the spray coating.

[0003] The existing pressure regulation method involves direct adjustment at the air pump, with the adjustment mechanism integrated directly onto the air pump. When this mechanism is damaged, the entire air pump needs to be disassembled for repair and maintenance, which is inconvenient. Utility Model Content:

[0004] The purpose of this utility model is to overcome the shortcomings of the prior art and provide an electrostatic spraying pressure regulating device. It can be installed on the air inlet pipe and can regulate the pressure of the gas transported in the air inlet pipe. The pressure regulation is convenient, and its corresponding components can be disassembled for easy maintenance. When used with a pressure-regulating air pump, it can achieve dual pressure regulation and better pressure regulation effect.

[0005] The solution of this utility model to the aforementioned technical problem is:

[0006] An electrostatic spraying pressure regulating device includes a cylindrical sleeve body. The top plate of the cylindrical sleeve body has an upwardly extending connecting sleeve portion formed in the middle. The outer side wall of the connecting sleeve portion has an external thread. The middle part of the air outlet connecting pipe is inserted into the connecting sleeve portion. The lower part of the air outlet connecting pipe extends into the cylindrical sleeve body. The outer side wall of the middle part of the air outlet connecting pipe has a radially extending edge formed. The radially extending edge presses against the top surface of the connecting sleeve portion. The middle part of the outer connecting sleeve has a stepped through hole formed. The stepped through hole includes a large-diameter hole section at the bottom, a connecting hole section in the middle, and a small-diameter hole section at the top, with the inner diameter gradually decreasing from bottom to top. The large-diameter hole section is screwed onto the external thread of the connecting sleeve portion. The radially extending edge is located in the connecting hole section in the middle. The top surface of the radially extending edge presses against the top surface of the connecting hole section in the middle. The upper part of the air outlet connecting pipe is inserted into the small-diameter hole section, and its outer side wall is in close contact with the inner side wall of the small-diameter hole section.

[0007] A horizontal clamping plate is inserted in the middle of the cylindrical sleeve body. A conical block is fixed in the middle of the top surface of the horizontal clamping plate. The outer wall of the conical block is a conical surface with a small diameter at the top and a large diameter at the bottom. The upper part of the conical block is inserted in the bottom end of the air outlet connecting pipe. Its outer wall is close to or pressed against the conical inner wall at the bottom end of the air outlet connecting pipe and cooperates with the conical inner wall.

[0008] A sealing ring is fitted on the outer wall of the horizontal clamping plate, and the outer wall of the sealing ring is in close contact with the inner wall of the cylindrical sleeve body.

[0009] The bottom cover of the cylindrical sleeve body has a threaded through hole formed in the middle. The pressure adjusting screw is threaded into the threaded through hole. The top of the pressure adjusting screw extends out of the top surface of the bottom cover and into the cylindrical sleeve body. The top of the adjusting screw is fixed with a pressure adjusting plate. The adjusting spring is inserted into the cylindrical sleeve body. The top of the adjusting spring presses against the middle of the bottom surface of the horizontal pressing plate, and the bottom of the adjusting spring presses against the top surface of the pressure adjusting plate.

[0010] The bottom cover has a flow hole formed on its edge.

[0011] The bottom of the adjusting screw extends out of the bottom surface of the bottom cover and has a rotating part. A locking nut is screwed onto the adjusting screw, and the top surface of the locking nut presses against the bottom surface of the bottom cover.

[0012] An outwardly extending air inlet connector is connected to one side plate at the upper part of the cylindrical sleeve body.

[0013] An outwardly extending detection connector is connected to one side plate at the upper part of the cylindrical sleeve body.

[0014] Multiple sealing annular grooves are formed on the middle outer side wall of the air outlet connecting pipe. The sealing rings are nested in the corresponding sealing annular grooves. The outer side wall of the lower sealing ring presses against the inner side wall of the connecting sleeve body, and the outer side wall of the upper sealing ring presses against the inner side wall of the small diameter hole section of the outer connecting sleeve body.

[0015] The outstanding effect of this utility model is:

[0016] It can be installed on the intake pipe and can regulate the pressure of the gas transported in the intake pipe. The pressure regulation is convenient, and its corresponding components can be disassembled for easy maintenance. When used with a pressure-regulating air pump, it can achieve dual pressure regulation and better pressure regulation effect. Attached image description:

[0017] Figure 1 This is a partial structural schematic diagram of the present invention;

[0018] Figure 2 yes Figure 1 A magnified view of a portion of the image;

[0019] Figure 3 This is a partial top view of the outer ring connector. Detailed implementation method:

[0020] See as Figures 1 to 3As shown, an electrostatic spraying pressure regulating device includes a cylindrical sleeve body 10. A connecting sleeve portion 11 extending upwards is formed in the middle of the top plate of the cylindrical sleeve body 10. External threads are formed on the outer side wall of the connecting sleeve portion 11. The middle portion of an air outlet connecting pipe 20 is inserted into the connecting sleeve portion 11, and the lower portion of the air outlet connecting pipe 20 extends into the cylindrical sleeve body 10. A radially extending edge 21 is formed on the outer side wall of the middle portion of the air outlet connecting pipe 20, and the radially extending edge 21 presses against the connecting sleeve portion 11. On the top surface, a stepped through hole is formed in the middle of the outer connecting sleeve 30. The stepped through hole includes a large-diameter hole section at the bottom, a connecting hole section in the middle, and a small-diameter hole section at the top, with the inner diameter gradually decreasing from bottom to top. The large-diameter hole section is screwed onto the external thread of the connecting sleeve 11. The radial extension edge 21 is located in the connecting hole section in the middle. The top surface of the radial extension edge 21 is pressed against the top surface of the connecting hole section in the middle. The upper part of the air outlet connecting pipe 20 is inserted into the small-diameter hole section, and its outer side wall is tightly attached to the inner side wall of the small-diameter hole section.

[0021] A horizontal clamping plate 40 is inserted into the middle of the cylindrical sleeve body 10. A conical block 41 is fixed in the middle of the top surface of the horizontal clamping plate 40. The outer wall of the conical block 41 is a conical surface with a small diameter at the top and a large diameter at the bottom. The upper part of the conical block 41 is inserted into the bottom end of the air outlet connecting pipe 20. Its outer wall is close to or pressed against the conical inner wall at the bottom end of the air outlet connecting pipe 20 and cooperates with the conical inner wall.

[0022] A sealing ring 1 is fitted on the outer side wall of the horizontal clamping plate 40, and the outer side wall of the sealing ring 1 is in close contact with the inner side wall of the cylindrical sleeve body 10.

[0023] The bottom cover 12, which is fixed to the bottom of the cylindrical sleeve body 10, has a threaded through hole formed in the middle. The pressure adjusting screw 13 is threaded into the threaded through hole. The top of the pressure adjusting screw 13 extends out of the top surface of the bottom cover 12 and into the cylindrical sleeve body 10. The top of the adjusting screw 13 is fixed with a pressure adjusting plate 14 or is movably connected to the pressure adjusting plate 14. The adjusting spring 15 is inserted into the cylindrical sleeve body 10. The top of the adjusting spring 15 presses against the middle of the bottom surface of the horizontal pressing plate 40, and the bottom of the adjusting spring 15 presses against the top surface of the pressure adjusting plate 14.

[0024] The top surface of the bottom cover 12 has an upwardly extending threaded sleeve portion 121 formed on its edge. The threaded sleeve portion 121 is threaded onto an internal thread formed on the inner side wall of the bottom of the cylindrical sleeve body 10. The top surface of the edge of the bottom cover 12 presses against the bottom end surface of the cylindrical sleeve body 10.

[0025] In this embodiment, the bottom cover 12 can be separated from the cylindrical sleeve body 10, and the outer connecting sleeve 30 can also be disassembled. After the bottom cover 12 and the outer connecting sleeve 30 are disassembled, the internal components can be directly disassembled, and the air outlet connecting pipe 20 can also be directly disassembled, thereby facilitating maintenance or replacement.

[0026] Furthermore, the bottom cover 12 has a flow hole 122 formed on its edge.

[0027] The bottom of the adjusting screw 13 extends out of the bottom surface of the bottom cover 12 and has a rotating part. A locking nut 2 is screwed onto the adjusting screw 13, and the top surface of the locking nut 2 presses against the bottom surface of the bottom cover 12.

[0028] The bottom edge of the horizontal pressing plate 40 is formed with a downwardly extending limiting sleeve, and the top edge of the adjusting plate 14 is formed with an upwardly extending limiting sleeve. The upper and lower parts of the adjusting spring 15 are inserted into the corresponding limiting sleeves.

[0029] An outwardly extending air inlet connector 3 is connected to one side plate of the upper part of the cylindrical sleeve body 10.

[0030] Furthermore, an outwardly extending detection connector 4 is connected to one side plate at the upper part of the cylindrical sleeve body 10, and a plug 5 is screwed onto the detection connector 4. In use, the plug 5 can be removed and a pressure gauge can be connected to it to understand the pressure of the gas flowing inside the cylindrical sleeve body 10, thus meeting the adjustment needs (the pressure of the internal gas supply can be understood through the pressure gauge).

[0031] Furthermore, multiple sealing annular grooves are formed on the middle outer side wall of the air outlet connecting pipe 20, and the sealing ring 6 is nested in the corresponding sealing annular groove. The outer side wall of the lower sealing ring 6 presses against the inner side wall of the connecting sleeve body 11, and the outer side wall of the upper sealing ring 6 presses against the inner side wall of the small diameter hole section of the outer connecting sleeve body 30.

[0032] An outer annular connecting seat 60 is fixed to the lower outer side wall of the cylindrical sleeve body 10, and an annular connecting plate portion 61 extending radially outward is formed on the bottom outer side wall of the outer annular connecting seat 60. The outer annular connecting seat 60 is used to fix this embodiment in the corresponding position.

[0033] An inner annular groove is formed on the inner wall of the sealing ring 1, and the outer edge of the horizontal pressing plate 40 is engaged in the inner annular groove.

[0034] In this embodiment, the air inlet connector 3 is connected to the air inlet, and the outer end of the air outlet connector 20 is connected to the air inlet of the spray gun through the connector.

[0035] In use, after air is introduced through the air inlet connector 3, its pressure presses down the horizontal pressure plate 40, causing the conical block 41 to separate from the inner wall of the bottom end of the air outlet connector 20. This allows the gas to enter the air outlet connector 20 and be delivered to the air inlet of the spray gun. During this process, the adjusting spring 15 is compressed. By loosening the locking nut 2 and rotating the adjusting screw 13, the pressure adjusting plate 14 is adjusted in height, which indirectly changes the pressure of the adjusting spring 15 on the horizontal pressure plate 40. This changes the pressure of the gas entering the cylindrical sleeve body 10 that pushes the horizontal pressure plate 40 downward, thus achieving adjustment and meeting the user's pressure adjustment needs. The adjustment is convenient.

[0036] When this embodiment is installed on a pressure-regulating air pump, it combines with the air pump's regulation to achieve dual regulation, thereby improving the pressure regulation effect.

[0037] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An electrostatic spraying pressure regulating device, comprising a cylindrical sleeve body (10), characterized in that: The top plate of the cylindrical sleeve body (10) has an upwardly extending connecting sleeve portion (11) formed in the middle. External threads are formed on the outer side wall of the connecting sleeve portion (11). The middle part of the vent connecting pipe (20) is inserted into the connecting sleeve portion (11), and the lower part of the vent connecting pipe (20) extends into the cylindrical sleeve body (10). A radially extending edge (21) is formed on the outer side wall of the middle part of the vent connecting pipe (20). The radially extending edge (21) presses against the top surface of the connecting sleeve portion (11). The middle part of the sleeve (30) is formed with a stepped through hole. The stepped through hole includes a large diameter hole section at the bottom, a connecting hole section in the middle, and a small diameter hole section at the top, with the inner diameter gradually decreasing from bottom to top. The large diameter hole section is screwed onto the external thread of the connecting sleeve part (11). The radial extension edge (21) is located in the connecting hole section in the middle. The top surface of the radial extension edge (21) is pressed against the top surface of the connecting hole section in the middle. The upper part of the air outlet connecting pipe (20) is inserted into the small diameter hole section, and its outer side wall is close to the inner side wall of the small diameter hole section. A horizontal clamping plate (40) is inserted in the middle of the cylindrical sleeve body (10). A conical block (41) is fixed in the middle of the top surface of the horizontal clamping plate (40). The outer wall of the conical block (41) is a conical surface with a small upper diameter and a large lower diameter. The upper part of the conical block (41) is inserted in the bottom end of the air outlet connecting pipe (20). Its outer wall is close to or pressed against the conical inner wall of the bottom end of the air outlet connecting pipe (20) and cooperates with the conical inner wall. A sealing ring (1) is fitted on the outer side wall of the horizontal pressing plate (40), and the outer side wall of the sealing ring (1) is in close contact with the inner side wall of the cylindrical sleeve body (10). The bottom cover (12) of the cylindrical sleeve body (10) is fixed at the bottom and has a threaded through hole formed in the middle. The pressure adjusting screw (13) is screwed into the threaded through hole. The top of the pressure adjusting screw (13) extends out of the top surface of the bottom cover (12) and into the cylindrical sleeve body (10). The top of the pressure adjusting screw (13) is fixed with a pressure adjusting plate (14). The adjusting spring (15) is inserted into the cylindrical sleeve body (10). The top of the adjusting spring (15) presses against the middle of the bottom surface of the horizontal pressing plate (40), and the bottom of the adjusting spring (15) presses against the top surface of the pressure adjusting plate (14).

2. The electrostatic spraying pressure regulating device according to claim 1, characterized in that: The top surface of the bottom cover (12) has an upwardly extending threaded sleeve (121) formed on the edge. The threaded sleeve (121) is threaded onto the internal thread formed on the inner side wall of the bottom of the cylindrical sleeve body (10). The top surface of the edge of the bottom cover (12) presses against the bottom end surface of the cylindrical sleeve body (10).

3. The electrostatic spraying pressure regulating device according to claim 1, characterized in that: The bottom cover (12) has a flow hole (122) formed on its edge.

4. The electrostatic spraying pressure regulating device according to claim 1, characterized in that: The bottom of the pressure regulating screw (13) extends out of the bottom surface of the bottom cover (12) and is formed with a rotating part. A locking nut (2) is screwed onto the pressure regulating screw (13), and the top surface of the locking nut (2) presses against the bottom surface of the bottom cover (12).

5. The electrostatic spraying pressure regulating device according to claim 1, characterized in that: The bottom edge of the horizontal pressing plate (40) is formed with a downwardly extending limiting sleeve, and the top edge of the pressure adjusting plate (14) is formed with an upwardly extending limiting sleeve. The upper and lower parts of the adjusting spring (15) are inserted into the corresponding limiting sleeves.

6. The electrostatic spraying pressure regulating device according to claim 1, characterized in that: An outwardly extending air intake connector (3) is connected to one side plate of the upper part of the cylindrical sleeve body (10).

7. The electrostatic spraying pressure regulating device according to claim 1, characterized in that: An outwardly extending detection connector (4) is connected to one side plate of the upper part of the cylindrical sleeve body (10).

8. The electrostatic spraying pressure regulating device according to claim 1, characterized in that: Multiple sealing annular grooves are formed on the middle outer side wall of the air outlet connecting pipe (20), and the sealing ring (6) is nested in the corresponding sealing annular groove. The outer side wall of the lower sealing ring (6) presses against the inner side wall of the connecting sleeve body (11), and the outer side wall of the upper sealing ring (6) presses against the inner side wall of the small diameter hole section of the outer connecting sleeve body (30).

9. The electrostatic spraying pressure regulating device according to claim 1, characterized in that: An outer annular connecting seat (60) is fixed on the lower outer side wall of the cylindrical sleeve body (10), and an annular connecting plate portion (61) extending radially outward is formed on the bottom outer side wall of the outer annular connecting seat (60).

10. The electrostatic spraying pressure regulating device according to claim 1, characterized in that: The inner wall of the sealing ring (1) is formed with an inner annular groove, and the outer edge of the horizontal pressing plate (40) is engaged in the inner annular groove.

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