Pneumatic control valve with protection device

Abstract

The utility model discloses a pneumatic control valve with a protection device, which comprises a valve body, a liquid inlet pipe is arranged on one side of the valve body, a buffer shell is connected to the liquid inlet pipe, a mounting shaft is arranged in the buffer shell through a bearing structure, a plurality of flow guide baffles are uniformly arranged on the mounting shaft, a cross pipe is connected to the liquid inlet end of the buffer shell, and the cross pipe is connected to the liquid inlet end of the buffer shell. A filter screen cylinder is arranged in the cross pipe, a liquid inlet is formed in the side, connected with the liquid inlet end of the cross pipe, of the filter screen cylinder, a slag discharging pipe is arranged at the bottom end of the cross pipe, an opening and closing valve is arranged on the slag discharging pipe, a scraper is arranged in the filter screen cylinder, and a lifting driving piece matched with the scraper is arranged on the cross pipe. Filtering and flow guiding of fluid before the fluid enters the valve body can be achieved, blockage of impurities in the valve body is reduced, and meanwhile direct impact of the fluid on the valve body is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of pneumatic regulating valves, and more particularly to a pneumatic regulating valve with a protective device. Background Art

[0002] A pneumatic control valve utilizes compressed air as its power source, controlling its opening through a pneumatic actuator to regulate parameters such as flow, pressure, and temperature. Pneumatic control valves are widely used in industries such as petroleum, chemical, electric power, food, and pharmaceuticals, controlling media in various pipeline systems.

[0003] To mitigate the impact of fluid scouring, existing pneumatic control valves typically design the fluid passages in the valve body to be irregularly curved. Although this design helps reduce the impact of scouring on the valve, the direct scouring force exerted by the fluid upon entering the valve body is still significant, and there is still room for improvement in its anti-scouring performance.

[0004] In addition, since the liquid flowing through the pneumatic control valve may contain impurities, and the pneumatic control valve itself is not equipped with the function of filtering impurities to protect its internal structure, these impurities may accumulate inside the pneumatic control valve during long-term operation. This accumulation phenomenon may have an adverse effect on the stable operation of the pneumatic control valve; the Chinese patent document with publication number CN221348067U discloses a pneumatic control valve with a protective device. Although it can filter the fluid entering the valve body in advance by setting a filter mesh cylinder, the impurities in the above scheme accumulate inside the filter mesh cylinder, which is not easy to clean and can easily cause blockage of the flow channel, affecting the fluid delivery effect. Utility Model Content

[0005] (1) Technical problems solved

[0006] In response to the problems existing in the prior art, the present invention provides a pneumatic regulating valve with a protective device to solve the technical problems mentioned in the background technology that the pneumatic regulating valve in the prior art has poor anti-scouring effect on the valve body and poor filtering performance.

[0007] (2) Technical solution

[0008] To achieve the above objectives, the present invention provides the following technical solutions:

[0009] A pneumatic regulating valve with a protective device comprises a valve body, a liquid inlet pipe is provided on one side of the valve body, a buffer shell is connected to the liquid inlet pipe, a mounting shaft is provided in the buffer shell through a bearing structure, a plurality of guide baffles are evenly provided on the mounting shaft, a cross pipe is connected to the liquid inlet end of the buffer shell, a filter screen cylinder is provided inside the cross pipe, a liquid inlet is provided on the side of the filter screen cylinder connected to the liquid inlet end of the cross pipe, a slag discharge pipe is provided at the bottom end of the cross pipe, an opening and closing valve is provided on the slag discharge pipe, a scraper is provided inside the filter screen cylinder, and a lifting drive component is provided on the cross pipe to cooperate with the scraper.

[0010] The utility model is further configured as follows: a limiting top plate is provided on the top of the filter screen cylinder; a limiting edge is provided on the inner top of the cross tube in cooperation with the limiting top plate; a sealing gasket is provided between the limiting top plate and the limiting edge; the lifting drive member is sealingly mounted on the limiting top plate, and the telescopic end of the lifting drive member is connected to the scraper; the filter screen cylinder can be stably installed in the cross tube through the cooperation of the limiting top plate and the limiting edge; the provision of the sealing gasket can improve the connection sealing between the limiting edge and the cross tube.

[0011] The utility model is further configured such that a sealing cap is provided on the top thread of the cross tube, the sealing cap is pressed and fixed on the limiting top plate, and is movably connected with the lifting drive member, so that the limiting top plate is pressed and limited in the cross tube by the sealing cap, and at the same time, it is convenient for the limiting top plate to drive the filter screen cylinder to be disassembled in the cross tube.

[0012] The utility model is further configured such that the scraper includes a connecting frame, the connecting frame is arranged at the telescopic end of the lifting drive member, the outer end of the connecting frame is provided with a connecting ring, the outer side of the connecting ring is provided with a scraping edge, and the stable installation of the scraping edge is achieved through the cooperation of the connecting frame and the connecting pipe, while at the same time, there are pores inside the scraping edge to reduce material usage.

[0013] The utility model is further configured such that connecting pipes are provided on both sides of the buffer shell and the cross tube, and connecting flanges are provided on the connecting pipes. The cooperation of the connecting pipes and the connecting flanges can facilitate the connection between the buffer shell and the cross tube and the liquid inlet pipe, as well as the connection with the external pipeline.

[0014] The utility model is further configured such that a sealing edge is provided at the bottom end of the inner wall of the cross tube, and a sealing gasket is provided between the sealing edge and the bottom of the filter screen cylinder. After the filter screen cylinder is installed into the cross tube, the bottom end of the filter screen cylinder is pressed and fitted with the sealing gasket, thereby strengthening the sealing of the bottom end of the filter screen cylinder and improving the filtering effect.

[0015] The utility model is further configured such that a positioning ridge is provided on the limiting top plate, and a positioning groove is provided on the top of the cross tube. When the filter screen cartridge is installed, the positioning ridge on the limiting top plate can be engaged into the corresponding positioning groove, thereby realizing the positioning installation of the filter screen cartridge driven by the limiting top plate, thereby improving the accuracy of the filter screen cartridge during installation.

[0016] The present invention is further configured such that a sealing guide pad is provided at the position where the cross tube is connected to the liquid inlet, thereby enhancing the sealing performance of the connection between the liquid inlet and the cross tube.

[0017] (3) Beneficial effects

[0018] Compared with the prior art, the present invention provides a pneumatic regulating valve with a protective device, which has the following beneficial effects:

[0019] 1. The utility model is provided with a buffer shell connected to the liquid inlet pipe of the valve body, and a mounting shaft is provided in the buffer shell through a bearing structure, and a plurality of guide baffles are evenly provided through the mounting shaft. In this way, the fluid flowing through can enter the interior of the buffer shell before entering the valve body and impact the guide plate. Since the guide plate is rotatably installed in the buffer shell through the cooperation of the mounting shaft and the bearing, the guide plate can rotate following the impact force of the fluid, thereby realizing the diversion of the fluid, reducing the impact force when the fluid enters the interior of the valve body, and reducing the erosion of the inner wall of the valve body. At the same time, the rotation setting will not cause blockage, etc.

[0020] 2. The utility model is provided with a cross tube at the liquid inlet end of the buffer shell, and a filter mesh cylinder is provided in the cross tube, and a slag discharge pipe is provided at the bottom end of the cross tube, and an opening and closing valve is provided in conjunction with the slag discharge pipe. In this way, before the fluid enters the buffer shell, it will first be filtered through the filter mesh cylinder in the cross tube to intercept the impurities therein, thereby preventing the impurities from entering the buffer shell and the inside of the valve body and causing blockage. When the intercepted impurities are large, the slag discharge pipe can be controlled to open by the opening and closing valve, and the intercepted impurities can be discharged outward through the slag discharge pipe, thereby realizing automatic cleaning of the intercepted impurities.

[0021] 3. At the same time, the utility model is provided with a scraper inside the filter screen cylinder, and a lifting drive member is provided on the cross tube to cooperate with the scraper. The lifting drive member can select an electric push rod, an electric telescopic rod, an electric cylinder, an air cylinder or other components with telescopic performance, so as to control the lifting and movement of the scraper inside the filter screen cylinder. When it is necessary to discharge impurities intercepted in the filter screen cylinder outward, the scraper can be controlled to move inside the filter screen cylinder through the lifting drive member, thereby scraping off impurities adhering to the inner wall of the filter screen cylinder, thereby improving the cleaning effect inside the filter screen cylinder and improving the filtering and circulation effect of the filter screen cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the overall structure of a pneumatic control valve with a protective device in this utility model. Figure 1 ;

[0023] Figure 2 This is a schematic cross-sectional view of the internal structure of the cross tube in the present invention;

[0024] Figure 3 This is a schematic diagram of the cross-tube internal structure of the present invention;

[0025] Figure 4 This is a schematic diagram of the overall structure of the scraper in the utility model;

[0026] Figure 5 This is a schematic cross-sectional view of the internal structure of the buffer shell in the present invention.

[0027] In the figure: 1. Valve body; 2. Liquid inlet pipe; 3. Buffer shell; 4. Mounting shaft; 5. Guide baffle; 6. Cross pipe; 7. Filter screen; 8. Liquid inlet; 9. Slag discharge pipe; 10. Opening and closing valve; 11. Scraper; 12. Lifting drive member; 13. Limiting top plate; 14. Limiting edge; 15. Sealing gasket; 16. Sealing cap; 17. Connecting frame; 18. Connecting ring; 19. Scraping edge; 20. Connecting pipe; 21. Connecting flange; 22. Sealing edge; 23. Sealing gasket; 24. Positioning ridge; 25. Positioning groove; 26. Sealing guide pad. DETAILED DESCRIPTION

[0028] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present invention 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 meaning 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 relative to the directions shown in the drawings, or relative to the vertical, perpendicular or gravity direction; similarly, for ease of understanding and description, "left" and "right" are usually relative 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 direction words are not used to limit the present invention.

[0031] See also Figure 1-Figure 5A pneumatic regulating valve with a protective device includes a valve body 1, a liquid inlet pipe 2 is provided on one side of the valve body 1, a buffer shell 3 is connected to the liquid inlet pipe 2, a mounting shaft 4 is provided in the buffer shell 3 through a bearing structure, and a plurality of guide baffles 5 are evenly provided on the mounting shaft 4, wherein the guide baffles 5 are provided with flow holes;

[0032] In this way, the fluid flowing through can enter the buffer shell 3 before entering the valve body 1 and impact the guide plate. Since the guide plate is rotatably mounted in the buffer shell 3 through the cooperation of the mounting shaft 4 and the bearing, the guide plate can rotate following the impact force of the fluid, thereby achieving fluid diversion, reducing the impact force when the fluid enters the valve body 1, and reducing the erosion of the inner wall of the valve body 1. At the same time, the rotation setting will not cause blockage, etc.

[0033] The utility model is provided with a cross pipe 6 connected to the liquid inlet end of the buffer shell 3, a filter screen cylinder 7 is provided inside the cross pipe 6, a liquid inlet 8 is provided on the side where the filter screen cylinder 7 is connected to the liquid inlet end of the cross pipe 6, a slag discharge pipe 9 is provided at the bottom end of the cross pipe 6, and an opening and closing valve 10 is provided on the slag discharge pipe 9;

[0034] In this way, before the fluid enters the buffer shell 3, it will first be filtered through the filter cylinder 7 in the cross tube 6 to intercept the impurities therein, thereby preventing the impurities from entering the buffer shell 3 and the inside of the valve body and causing blockage. When a large amount of impurities are intercepted, the discharge pipe 9 can be controlled to open by the on-off valve 10 to discharge the intercepted impurities outward through the discharge pipe 9, thereby realizing automatic cleaning of the intercepted impurities.

[0035] The utility model is provided with a scraper 11 inside the filter screen cylinder 7, and a lifting drive member 12 is provided on the cross tube 6 to match the scraper 11;

[0036] The scraper 11 can be controlled to move up and down inside the filter screen cylinder 7 through the lifting drive 12. When it is necessary to discharge impurities intercepted in the filter screen cylinder 7 to the outside, the scraper 11 can be controlled to move inside the filter screen cylinder 7 through the lifting drive 12, thereby scraping off impurities adhering to the inner wall of the filter screen cylinder 7, thereby improving the cleaning effect inside the filter screen cylinder 7 and improving the filtering and circulation effect of the filter screen cylinder 7.

[0037] See also Figure 1-Figure 5As an implementation method of the filter screen cartridge 7: a limiting top plate 13 is provided on the top of the filter screen cartridge 7, and a limiting edge 14 is provided at the inner top end of the cross tube 6 in cooperation with the limiting top plate 13, and a sealing gasket 15 is provided between the limiting top plate 13 and the limiting edge 14, and the lifting drive member 12 is sealingly installed on the limiting top plate 13, and the telescopic end of the lifting drive member 12 is connected to the scraper 11. Through the cooperation of the limiting top plate 13 and the limiting edge 14, the filter screen cartridge 7 can be stably installed in the cross tube 6, and the setting of the sealing gasket 15 can improve the connection sealing between the limiting edge 14 and the cross tube 6.

[0038] See also Figure 1-Figure 5 As an implementation method of the filter screen cartridge 7: a sealing cap 16 is provided on the top thread of the cross tube 6, the sealing cap 16 is pressed and fixed on the limiting top plate 13, and is movably connected to the lifting drive member 12. The sealing cap 16 realizes the pressing and limiting of the limiting top plate 13 in the cross tube 6, and at the same time facilitates the removal of the filter screen cartridge 7 in the cross tube 6 by the limiting top plate 13.

[0039] See also Figure 1-Figure 5 As an implementation of the scraper 11: the scraper 11 includes a connecting frame 17, the connecting frame 17 is arranged at the telescopic end of the lifting drive member 12, the outer end of the connecting frame 17 is provided with a connecting ring 18, and the outer side of the connecting ring 18 is provided with a scraping edge 19. The stable installation of the scraping edge 19 is achieved through the cooperation of the connecting frame 17 and the connecting pipe 20, and at the same time, the interior of the scraping edge 19 has pores, which reduces material consumption.

[0040] See also Figure 1-Figure 5 As an implementation method of the buffer shell 3 and the cross tube 6: connecting pipes 20 are provided on both sides of the buffer shell 3 and the cross tube 6, and connecting flanges 21 are provided on the connecting pipes 20. The cooperation of the connecting pipes 20 and the connecting flanges 21 can facilitate the connection between the buffer shell 3 and the cross tube 6 and the liquid inlet pipe 2, as well as the connection with the external pipeline.

[0041] See also Figure 1-Figure 5 As an implementation method of the cross tube 6: a sealing edge 22 is provided at the bottom end of the inner wall of the cross tube 6, and a sealing gasket 23 is provided between the sealing edge 22 and the bottom of the filter screen cylinder 7. After the filter screen cylinder 7 is installed into the cross tube 6, the bottom end of the filter screen cylinder 7 is pressed and fitted with the sealing gasket 23, thereby strengthening the sealing of the bottom end of the filter screen cylinder 7 and improving the filtering effect.

[0042] See also Figure 1-Figure 5As an implementation method of the limiting top plate 13: a positioning ridge 24 is provided on the limiting top plate 13, and a positioning groove 25 is provided on the top of the cross tube 6. When installing the filter screen cartridge 7, the positioning ridge 24 on the limiting top plate 13 can be engaged into the corresponding positioning groove 25, thereby realizing the positioning installation of the filter screen cartridge 7 driven by the limiting top plate 13, thereby improving the accuracy of the filter screen cartridge 7 during installation.

[0043] See also Figure 1-Figure 5 As an implementation of the cross tube 6: a sealing guide pad 26 is provided at the position where the cross tube 6 connects to the liquid inlet 8 to enhance the sealing performance of the connection between the liquid inlet 8 and the cross tube 6.

[0044] In summary:

[0045] The utility model is provided with a buffer shell 3 connected to the liquid inlet pipe 2 of the valve body, and a mounting shaft 4 is provided in the buffer shell 3 through a bearing structure, and a plurality of guide baffles 5 are evenly provided through the mounting shaft 4. In this way, the fluid flowing through can enter the buffer shell 3 before entering the valve body 1 and impact the guide plate. Since the guide plate is rotatably mounted in the buffer shell 3 through the mounting shaft 4 and the bearing, the guide plate can rotate following the impact force of the fluid, thereby achieving fluid diversion, reducing the impact force when the fluid enters the interior of the valve body 1, and reducing the erosion of the inner wall of the valve body 1. At the same time, the rotation setting will not cause blockage, etc.

[0046] The utility model is provided with a cross tube 6 at the liquid inlet end of the buffer shell 3, and a filter mesh cylinder 7 is provided in the cross tube 6, and a slag discharge pipe 9 is provided at the bottom end of the cross tube 6. An opening and closing valve 10 is provided in conjunction with the slag discharge pipe 9. In this way, before the fluid enters the buffer shell 3, it will first be filtered through the filter mesh cylinder 7 in the cross tube 6 to intercept the impurities therein, thereby preventing the impurities from entering the buffer shell 3 and the interior of the valve body and causing blockage. When a large amount of impurities are intercepted, the slag discharge pipe 9 can be controlled to open by the opening and closing valve 10, and the intercepted impurities can be discharged outward through the slag discharge pipe 9, thereby realizing automatic cleaning of the intercepted impurities.

[0047] At the same time, the utility model is provided with a scraper 11 inside the filter screen cylinder 7, and a lifting drive member 12 is provided on the cross tube 6 to cooperate with the scraper 11, wherein the lifting drive member 12 can select an electric push rod, an electric telescopic rod, an electric cylinder, a cylinder or other components with telescopic performance, so as to control the scraper 11 to move up and down in the filter screen cylinder 7. When it is necessary to discharge impurities intercepted in the filter screen cylinder 7 to the outside, the scraper 11 can be controlled to move inside the filter screen cylinder 7 through the lifting drive member 12, so as to scrape off impurities adhering to the inner wall of the filter screen cylinder 7, thereby improving the cleaning effect inside the filter screen cylinder 7 and improving the filtering and circulation effect of the filter screen cylinder 7.

[0048] In all the solutions mentioned above, the connection between two components can be selected according to actual conditions by welding, bolt and nut connection, bolt or screw connection or other well-known connection methods, which are not listed here one by one. In the above, whenever there is a fixed connection, welding is preferably considered. Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

[0049] In all the solutions mentioned above, if there is no clear description about the operation of electrical components, they are all controlled by the controller. Since the devices matched with the controller are common devices, their control principles and circuit connections are well-known and mature technologies. Therefore, their electrical connection relationships and specific circuit structures will not be described in detail here.

[0050] In all the solutions mentioned above, those involving motors can be combined with reducers if necessary. The connection structure and working principle between the motor and the reducer are well-known technologies and will not be described in detail in this utility model.

[0051] In all the solutions mentioned above, those involving the connection between solar panels and batteries can be used in conjunction with essential accessories such as inverters, battery charging controllers, cables, fuses, and brackets. Their control principles and line connections are all well-known and mature technologies. Their electrical connection relationships and specific circuit structures will not be described in detail here.

Claims

1. A pneumatic regulating valve with a protective device, comprising a valve body (1), a liquid inlet pipe (2) being provided on one side of the valve body (1), and characterized in that: The liquid inlet pipe (2) is connected to a buffer shell (3), a mounting shaft (4) is provided in the buffer shell (3) through a bearing structure, a plurality of guide baffles (5) are evenly provided on the mounting shaft (4), a cross tube (6) is connected to the liquid inlet end of the buffer shell (3), a filter screen cylinder (7) is provided inside the cross tube (6), a liquid inlet (8) is provided on the side of the filter screen cylinder (7) connected to the liquid inlet end of the cross tube (6), a slag discharge pipe (9) is provided at the bottom end of the cross tube (6), an opening and closing valve (10) is provided on the slag discharge pipe (9), a scraper (11) is provided inside the filter screen cylinder (7), and a lifting drive member (12) is provided on the cross tube (6) in conjunction with the scraper (11).

2. The pneumatic regulating valve with a protective device according to claim 1, characterized in that: A limiting top plate (13) is provided on the top of the filter screen cylinder (7), a limiting edge (14) is provided on the inner top of the cross tube (6) in cooperation with the limiting top plate (13), a sealing gasket (15) is provided between the limiting top plate (13) and the limiting edge (14), the lifting drive member (12) is sealingly mounted on the limiting top plate (13), and the telescopic end of the lifting drive member (12) is connected to the scraper (11).

3. The pneumatic regulating valve with a protective device according to claim 2, characterized in that: The top thread of the cross tube (6) is provided with a sealing cap (16), which is pressed and fixed on the limiting top plate (13) and movably connected to the lifting drive member (12).

4. The pneumatic regulating valve with a protective device according to claim 3, characterized in that: The scraper (11) includes a connecting frame (17), the connecting frame (17) is arranged at the telescopic end of the lifting drive member (12), the outer end of the connecting frame (17) is provided with a connecting ring (18), and the outer side of the connecting ring (18) is provided with a scraping edge (19).

5. The pneumatic regulating valve with a protective device according to claim 1, characterized in that: Connecting pipes (20) are provided on both sides of the buffer shell (3) and the cross pipe (6), and connecting flanges (21) are provided on the connecting pipes (20).

6. A pneumatic control valve with a protective device according to any one of claims 1 to 5, characterized in that: A sealing edge (22) is provided at the bottom end of the inner wall of the cross tube (6), and a sealing gasket ring (23) is provided between the sealing edge (22) and the bottom of the filter screen cylinder (7).

7. The pneumatic regulating valve with a protective device according to claim 2, characterized in that: The limiting top plate (13) is provided with a positioning ridge (24), and the top of the cross tube (6) is provided with a positioning groove (25).

8. The pneumatic regulating valve with a protective device according to claim 1, characterized in that: A sealing guide pad (26) is provided at the position where the cross tube (6) is connected to the liquid inlet (8).

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