Pneumatic pressure regulating valve structure

Abstract

The utility model discloses a pneumatic pressure regulating valve structure and belongs to the technical field of pressure regulating valves, the pneumatic pressure regulating valve structure comprises a water spraying unloading mechanism, the water spraying unloading mechanism comprises an unloading assembly and a high-pressure spray head, an input port and an output port are respectively arranged on two sides of a pressure regulating valve, a pressure relief port is arranged at the bottom of the pressure regulating valve, and the pressure relief port is connected with the high-pressure spray head. When the high-pressure end needs to be closed, downward pressure caused by air cut-off of the air cylinder disappears, the valve element is pushed upwards under the action of high-pressure water, the valve element and the valve seat are separated, the unloading opening is opened, and liquid at the output end of the pressure regulating valve flows into the through pipe. And water cannot flow out of the pressure regulating valve when the high-pressure nozzle is dismounted, so that the water is prevented from flowing to the high-pressure nozzle at the output end from the through pipe when the pneumatic pressure regulating valve is unloaded, and the water is effectively prevented from flowing out when the high-pressure nozzle is dismounted.

Description

Technical Field

[0001] The utility model relates to the field of pressure regulating valves, in particular to a pneumatic pressure regulating valve structure. Background Art

[0002] Pneumatic pressure regulating valve is one of the important equipment in the field of industrial automation control. It is mainly used to adjust the pressure of the medium in the pipeline. The pneumatic pressure regulating valve uses compressed air as the power source and controls the pressure by adjusting the valve opening, thereby achieving pressure stability in the process flow.

[0003] In the use scenario of the pneumatic pressure regulating valve, there is a situation where the nozzle at the high-pressure water output end needs to be periodically switched on and off. However, when the nozzle at the high-pressure output end of the pneumatic pressure regulating valve is removed, water will flow out, affecting the replacement of the nozzle. The application scenario of the pneumatic pressure regulating valve is relatively comprehensive. There will be scenarios where the components at the output end need to be frequently replaced. The output end will have water flowing out every time it is replaced. The water flowing out to the equipment below will also affect the service life of the equipment below. At the same time, the frequent opening and closing of the pneumatic pressure regulating valve will easily cause the internal components to wear, resulting in a decrease in its service life. How to invent a pneumatic pressure regulating valve structure to improve these problems has become an urgent problem to be solved by those skilled in the art. Utility Model Content

[0004] In order to make up for the above deficiencies, the utility model provides a pneumatic pressure regulating valve structure, which aims to improve the problem of water flowing when replacing components such as the output end nozzle.

[0005] The utility model is realized as follows: a pneumatic pressure regulating valve structure, comprising

[0006] A pressure regulating mechanism, wherein the pressure regulating mechanism includes a pressure regulating valve;

[0007] A water spray unloading mechanism includes an unloading assembly and a high-pressure nozzle. An input port and an output port are respectively provided on both sides of the pressure regulating valve. A pressure relief port is provided at the bottom of the pressure regulating valve. The unloading assembly is threadedly and sealably installed at the bottom of the pressure regulating valve, and the high-pressure nozzle is sealably installed at the output port of the pressure regulating valve.

[0008] In a preferred technical solution of the present invention, a pneumatic component is provided above the pressure regulating valve, a spring is provided in the middle of the pressure regulating valve, a valve core is clamped at the bottom of the spring, a valve seat is provided at the inner bottom of the pressure regulating valve, the valve core and the valve seat are arranged correspondingly, and the spring is sleeved on the top of the valve core.

[0009] In a preferred technical solution of the present invention, a zirconia ceramic ball is clamped at the bottom limit of the valve core, and a groove matching the zirconia ceramic ball is provided at the top of the valve seat.

[0010] In a preferred technical solution of the present invention, a pneumatic block is provided in the pneumatic assembly above the pressure regulating valve, and the pneumatic block is provided corresponding to the spring.

[0011] In a preferred technical solution of the present invention, O-rings and supporting rings are provided at the static sealing locations in the pressure regulating valve that are in contact with the high-pressure water.

[0012] In a preferred technical solution of the present invention, Gly rings are provided at the dynamic seals in contact with high-pressure water in the pressure regulating valve.

[0013] In a preferred technical solution of the present invention, the unloading assembly includes a through pipe, which is connected to the pressure relief port at the bottom of the pressure regulating valve, and the end of the through pipe is sleeved with a pipe cover.

[0014] In a preferred technical solution of the present invention, the other end of the through pipe is externally limited and rotatably connected with a connecting nut, the internal thread of the connecting nut is sleeved with a mounting tube, the other end of the mounting tube is threadedly sealed with a screw barrel, the screw barrel is sealed with the bottom pressure relief port of the pressure regulating valve, and the screw barrel is corresponding to the valve seat.

[0015] In a preferred technical solution of the present invention, a sealing gasket is provided between the screw barrel and the bottom of the pressure regulating valve.

[0016] The beneficial effects of the present invention are as follows: the present invention obtains a pneumatic pressure-regulating valve structure through the above-mentioned design. When in use, when the high-pressure end needs to output high pressure, the cylinder ventilation applies pressure downward, causing the valve core to move downward and close the unloading port, thereby achieving the purpose of high-pressure water flowing out of the high-pressure water outlet; when the high-pressure end needs to be closed, the downward pressure of the cylinder air-off disappears, and the valve core pushes the valve core upward under the action of high-pressure water, the valve core and the valve seat are separated, the unloading port is opened, and the liquid at the output end of the pressure regulating valve flows into the through pipe. At this time, water will not flow out of the pressure regulating valve when the high-pressure nozzle is disassembled, which prevents water from flowing from the through pipe to the high-pressure nozzle at the output end when the pneumatic pressure regulating valve is unloaded, effectively avoiding water outflow when the high-pressure nozzle is disassembled. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 This is a schematic structural diagram of a pressure regulating mechanism and a water spray unloading mechanism provided in an embodiment of the present utility model;

[0019] Figure 2 A side view schematic diagram of the structure provided for an embodiment of the utility model;

[0020] Figure 3 A schematic cross-sectional view of the structure of an embodiment of the present invention;

[0021] Figure 4 for Figure 3 Enlarged view of part A;

[0022] Figure 5 This is a schematic diagram of the cross-sectional structure of the pressure regulating mechanism provided in an embodiment of the present utility model.

[0023] In the figure: 100-pressure regulating mechanism; 110-pressure regulating valve; 111-spring; 112-valve core; 113-valve seat; 114-zirconia ceramic ball; 115-pneumatic block; 200-water spray unloading mechanism; 210-unloading assembly; 211-through pipe; 212-pipe cover; 213-connecting nut; 214-mounting pipe; 215-screw barrel; 216-sealing gasket; 220-high-pressure nozzle. DETAILED DESCRIPTION

[0024] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] See also Figure 1 and Figure 2 The utility model provides a technical solution: a pneumatic pressure regulating valve structure, including

[0026] The pressure regulating mechanism 100 includes a pressure regulating valve 110; the water spray unloading mechanism 200 includes an unloading assembly 210 and a high-pressure nozzle 220. The pressure regulating valve 110 is provided with an input port and an output port on both sides, and a pressure relief port is provided at the bottom of the pressure regulating valve 110. The unloading assembly 210 is threadedly and sealedly installed at the bottom of the pressure regulating valve 110. The high-pressure nozzle 220 is sealed and installed at the output port of the pressure regulating valve 110. The pressure regulating valve 110 is used to unload the pressure at the end of the pressure regulating valve 110.

[0027] Above the pressure-regulating valve 110 is a pneumatic assembly. A spring 111 is located in the middle of the pressure-regulating valve 110. A valve core 112 is secured to the bottom of the spring 111. A valve seat 113 is located on the inner bottom of the pressure-regulating valve 110. The valve core 112 and valve seat 113 are positioned correspondingly, and the spring 111 is sleeved onto the top of the valve core 112. A zirconia ceramic ball 114 is secured to the bottom limit of the valve core 112, and a groove is positioned at the top of the valve seat 113 to mate with the zirconia ceramic ball 114. A pneumatic block 115 is located within the pneumatic assembly above the pressure-regulating valve 110. This block 115 is secured to the spring 111. O-rings and support rings are installed at the static seals within the pressure-regulating valve 110 that come into contact with high-pressure water. The dynamic seals in the pressure-regulating valve 110 that come into contact with high-pressure water are all equipped with Gly rings. To extend the life of the pneumatic pressure-regulating valve, a zirconia ceramic ball 114 is embedded in the valve core 112. This ensures contact with the cutting edge of the valve seat 113, significantly improving the wear resistance of the seal at the valve core 112. The zirconia ceramic ball 114 is connected to the valve stem using a press-fit tool, tightly encasing the zirconia ceramic ball 114 within the 2Cr13 valve stem. This ensures coaxiality between the ceramic ball and the valve stem while preventing it from being dislodged by the high-pressure water.

[0028] The unloading assembly 210 includes a through tube 211, which is connected to the pressure relief port at the bottom of the pressure regulating valve 110. A pipe cap 212 is sleeved onto the end of the through tube 211. The other end of the through tube 211 is externally limited and rotationally connected to a connecting nut 213. The connecting nut 213 is internally threaded with a mounting tube 214. The other end of the mounting tube 214 is threadedly sealed with a screw barrel 215. The screw barrel 215 is sealed to the pressure relief port at the bottom of the pressure regulating valve 110 and is positioned correspondingly to the valve seat 113. A sealing gasket 216 is provided between the screw barrel 215 and the bottom of the pressure regulating valve 110. Due to the characteristics of the high-pressure pump and water jet piping system, when the pneumatic pressure regulating valve is unloaded, a residual pressure of 4-6 bar (approximately 1.6 bar) remains in the high-pressure main line and cannot be eliminated. Therefore, when the high-pressure output end needs to be closed, the pneumatic pressure regulating valve must also prevent the 4-6 bar water from continuing to flow to the high-pressure output end nozzle, and discharge the internal water into the through pipe 211 through the screw barrel 215. In the main water channel, the elastic force of the compression spring 111 is used to press the valve core 112, so that the contact between the valve core 112 and the valve seat 113 is sealed, thereby preventing water from flowing from the screw barrel 215 and the through pipe 211 to the output end nozzle when the pneumatic pressure regulating valve is unloaded.

[0029] Working principle: When the high-pressure end needs to output high pressure, the cylinder ventilation applies downward pressure, causing the valve core 112 to move downward and close the unloading port, thereby achieving the purpose of high-pressure water flowing out of the high-pressure water outlet; when the high-pressure end needs to be closed, the downward pressure of the cylinder air is cut off and the valve core 112 is pushed upward under the action of high-pressure water, the valve core 112 and the valve seat 113 are separated, the unloading port is opened, and the liquid at the output end of the pressure regulating valve 110 flows into the through pipe 211. At this time, if the high-pressure nozzle 220 is removed, no water will flow out of the pressure regulating valve 110.

[0030] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A pneumatic pressure regulating valve structure, characterized in that: include A pressure regulating mechanism, wherein the pressure regulating mechanism includes a pressure regulating valve; A water spray unloading mechanism includes an unloading assembly and a high-pressure nozzle. An input port and an output port are respectively provided on both sides of the pressure regulating valve. A pressure relief port is provided at the bottom of the pressure regulating valve. The unloading assembly is threadedly and sealably installed at the bottom of the pressure regulating valve, and the high-pressure nozzle is sealably installed at the output port of the pressure regulating valve.

2. A pneumatic pressure regulating valve structure according to claim 1, characterized in that: A pneumatic component is located above the pressure regulating valve, a spring is provided in the middle of the pressure regulating valve, a valve core is clamped at the bottom of the spring, a valve seat is provided at the inner bottom of the pressure regulating valve, the valve core and the valve seat are arranged correspondingly, and the spring is sleeved on the top of the valve core.

3. A pneumatic pressure regulating valve structure according to claim 2, characterized in that: The bottom limit clamp of the valve core is connected with a zirconia ceramic ball, and the top of the valve seat is provided with a groove matched with the zirconia ceramic ball.

4. A pneumatic pressure regulating valve structure according to claim 3, characterized in that: A pneumatic block is provided in the pneumatic assembly above the pressure regulating valve, and the pneumatic block is provided corresponding to the spring.

5. The pneumatic pressure regulating valve structure according to claim 2, characterized in that: The static sealing parts in the pressure regulating valve that come into contact with the high-pressure water are all provided with O-rings and supporting rings.

6. A pneumatic pressure regulating valve structure according to claim 2, characterized in that: The dynamic seals in the pressure regulating valve that are in contact with the high-pressure water are all provided with Gly rings.

7. A pneumatic pressure regulating valve structure according to claim 4, characterized in that: The unloading assembly includes a through pipe, which is connected to the pressure relief port at the bottom of the pressure regulating valve, and the end of the through pipe is sleeved with a pipe cover.

8. A pneumatic pressure regulating valve structure according to claim 7, characterized in that: The other end of the through pipe is connected to a connecting nut for external limited rotation, and a mounting tube is sleeved on the internal thread of the connecting nut. The other end of the mounting tube is thread-sealed with a screw barrel, and the screw barrel is sealed with the bottom pressure relief port of the pressure regulating valve, and the screw barrel is corresponding to the valve seat.

9. A pneumatic pressure regulating valve structure according to claim 8, characterized in that: A sealing gasket is provided between the screw barrel and the bottom of the pressure regulating valve.

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