Cage type single-seat regulating valve

Abstract

The cage type single-seat adjusting valve comprises a valve body and an installation ring, an installation sleeve is fixedly installed on the top end face of the installation ring, a damping rod is fixedly installed on the inner wall of the installation sleeve, a reset spring is fixedly installed on the inner wall of the installation sleeve, the reset spring is arranged on the side face of the damping rod in a sleeved mode, and a rubber scraper blade is fixedly installed on the other end face of the damping rod. Water flow is filtered twice through a first filter plate and a second filter plate, most impurities are removed, further, when a valve element needs to be closed, a handle is held tightly and rotated, a threaded rod is driven to rotate and matched with a threaded sleeve to drive the threaded rod to move downwards, a valve rod is pushed to move downwards, and then the valve element is pushed to move downwards; the surface of the valve element firstly makes contact with a rubber scraper, impurities on the surface of the valve element are scraped away, then the valve element is cleaned, the valve element and a rubber pad are further pushed to extrude each other, sealing is completed, in this way, the sealing performance of the device and the cleaning degree of the valve element can be improved, and sealing operation is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of regulating valves, in particular to a cage-type single-seat regulating valve. Background Art

[0002] The regulating valve, also known as the control valve, changes the fluid flow rate by receiving the control signal output by the regulating control unit and using power operation. The regulating valve is generally composed of an actuator and a valve. According to the power used by the actuator, the regulating valve can be divided into three types: pneumatic regulating valve, electric regulating valve, and hydraulic regulating valve. In addition, according to its function and characteristics, it can be divided into three types: linear characteristics, equal percentage characteristics, and parabolic characteristics. Among them, the cage-type single-seat regulating valve is a straight-through single-seat cast ball valve, mainly made of stainless steel.

[0003] The existing cage-type single-seat regulating valve will inevitably absorb some impurities on the surface of the valve core when it is subjected to long-term impact of the fluid during later use. Therefore, when the regulating valve needs to be closed, the impurities on the surface of the valve core will affect the sealing degree of the valve core closure to a certain extent, resulting in inadequate sealing, which in turn affects the use of the valve.

[0004] Therefore, it is necessary to provide a cage-type single-seat regulating valve. Utility Model Content

[0005] The utility model aims to solve the shortcomings in the prior art and proposes a cage-type single-seat regulating valve.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a cage-type single-seat regulating valve, including a valve body and a mounting ring, a mounting sleeve is fixedly mounted on the top surface of the mounting ring, a damping rod is fixedly mounted on the inner wall of the mounting sleeve, a reset spring is fixedly mounted on the inner wall of the mounting sleeve, the reset spring sleeve is arranged on the side of the damping rod, a rubber scraper is fixedly mounted on the other end surface of the damping rod, the other end of the reset spring is fixedly connected to the side of the rubber scraper, a water inlet is fixedly opened on the side of the valve body, a water outlet is fixedly opened on the side of the valve body, a connecting flange is fixedly mounted on the side of the valve body, and a Filter plate one, filter plate two is clamped and installed on the inner wall of the water inlet, the water flow is filtered twice by filter plate one and filter plate two to remove most of the impurities, and further when the valve core needs to be closed, the handle is held tightly and rotated to drive the threaded rod to rotate, and cooperate with the threaded sleeve to drive the threaded rod to move downward, and push the valve stem to move downward, and then push the valve core to move downward, the surface of the valve core first contacts the rubber scraper to scrape off the impurities on the surface of the valve core, and then clean the valve core, and further push the valve core and the rubber pad to squeeze each other to complete the sealing. This arrangement can improve the sealing performance of the device and the cleanliness of the valve core, which is beneficial to the sealing operation.

[0007] As a further description of the above technical solution:

[0008] The top surface of the valve body is threadedly installed with a fixing bolt, the top surface of the valve body is fastened with a valve cover by the fixing bolt, the inner wall of the valve cover is fixedly installed with a threaded rod, the top surface of the threaded rod is fixedly installed with a handle, the side surface of the threaded rod is threadedly installed with a threaded sleeve, and the bottom end surface of the threaded sleeve is fixedly installed with a sealing cover kit.

[0009] As a further description of the above technical solution:

[0010] A bearing seat is fixedly mounted on the bottom end surface of the threaded rod, a valve stem is fixedly mounted on the bottom end surface of the bearing seat, and a valve core is fixedly mounted on the bottom end surface of the valve stem.

[0011] As a further description of the above technical solution:

[0012] The valve body is provided with a through groove running through the upper and lower parts, an isolation disk is fixedly installed on the inner wall of the through groove, a sealing assembly is fixedly installed on the inner wall of the isolation disk, and the inner wall of the sealing assembly is extrusion-contacted and connected with the side of the valve stem. By installing the sealing assembly, the seal and the rubber pad, the sealing performance of the device can be improved, and the practicality and service life of the device can be further improved.

[0013] As a further description of the above technical solution:

[0014] A circulation chamber is fixedly provided inside the valve body, a mounting ring is fixedly installed on the inner wall of the circulation chamber, a groove is fixedly provided inside the mounting ring, the inner wall of the groove is adapted to the side surface of the valve core, and a rubber pad is fixedly installed on the inner wall of the groove.

[0015] As a further description of the above technical solution:

[0016] A sealing member is fixedly mounted on the side of the valve stem, and a bottom end surface of the sealing member is in extrusion contact connection with the inside of the circulation bin.

[0017] The utility model has the following beneficial effects:

[0018] 1. Compared with the prior art, the cage-type single-seat regulating valve filters the water flow twice through the filter plate one and the filter plate two to remove most of the impurities. Further, when the valve core needs to be closed, the handle is held tightly and turned to drive the threaded rod to rotate, and the threaded rod cooperates with the threaded sleeve to drive the threaded rod to move downward, and push the valve stem to move downward, and then push the valve core to move downward. The surface of the valve core first contacts the rubber scraper to scrape off the impurities on the surface of the valve core, and then clean the valve core, and further push the valve core and the rubber pad to squeeze each other to complete the sealing. This arrangement can improve the sealing performance of the device and the cleanliness of the valve core, which is beneficial to the sealing operation.

[0019] 2. Compared with the prior art, the cage-type single-seat regulating valve can improve the sealing performance of the device by installing sealing components, seals and rubber pads, and further improve the practicality and service life of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall structure of a cage-type single-seat regulating valve proposed by the utility model;

[0021] Figure 2 This is a schematic cross-sectional view of a valve body of a cage-type single-seat regulating valve proposed by the utility model;

[0022] Figure 3 A schematic diagram of a bearing seat of a cage-type single-seat regulating valve proposed by the utility model;

[0023] Figure 4 A schematic diagram of a valve stem of a cage-type single-seat regulating valve proposed by the utility model;

[0024] Figure 5 A schematic diagram of a valve core of a cage-type single-seat regulating valve proposed by the utility model;

[0025] Figure 6 The utility model is a schematic diagram of a scraping assembly of a cage-type single-seat regulating valve.

[0026] Legend:

[0027] 1. Valve body; 2. Circulation chamber; 3. Water inlet; 4. Water outlet; 5. Connecting flange; 6. Filter plate 1; 7. Filter plate 2; 8. Valve cover; 9. Fixing bolts; 10. Threaded sleeve; 11. Threaded rod; 12. Bearing seat; 13. Isolation disc; 14. Sealing assembly; 15. Valve stem; 16. Valve core; 17. Seal; 18. Mounting ring; 19. Rubber pad; 20. Mounting sleeve; 21. Damping rod; 22. Reset spring; 23. Rubber scraper; 24. Handle. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] Reference Figure 1-Figure 6The utility model provides a cage-type single-seat regulating valve, including a valve body 1 and a mounting ring 18. A mounting sleeve 20 is fixedly installed on the top surface of the mounting ring 18. A damping rod 21 is fixedly installed on the inner wall of the mounting sleeve 20. A reset spring 22 is fixedly installed on the inner wall of the mounting sleeve 20. The reset spring 22 is sleeved on the side of the damping rod 21. A rubber scraper 23 is fixedly installed on the other end surface of the damping rod 21. The other end of the reset spring 22 is fixedly connected to the side of the rubber scraper 23. A water inlet 3 is fixedly opened on the side of the valve body 1. A water outlet 4 is fixedly opened on the side of the valve body 1. A connecting flange 5 is fixedly installed on the side of the valve body 1. A filter plate 6 is clamped and installed on the inner wall of the water inlet 3. There is a filter plate 2 7, through which the water flow is filtered twice by the filter plate 1 6 and the filter plate 2 7 to remove most of the impurities. Further, when the valve core 16 needs to be closed, the handle 24 is gripped and rotated to drive the threaded rod 11 to rotate, and cooperates with the threaded sleeve 10 to drive the threaded rod 11 to move downward, and push the valve stem 15 to move downward, and then push the valve core 16 to move downward. The surface of the valve core 16 first contacts the rubber scraper 23 to scrape off the impurities on the surface of the valve core 16, and then clean the valve core 16, and further push the valve core 16 and the rubber pad 19 to squeeze each other to complete the sealing. This arrangement can improve the sealing performance of the device and the cleanliness of the valve core 16, which is beneficial to the sealing operation.

[0030] A fixing bolt 9 is threadedly installed on the top surface of the valve body 1, and a valve cover 8 is fastened to the top surface of the valve body 1 through the fixing bolt 9. A threaded rod 11 is fixedly installed on the inner wall of the valve cover 8, a handle 24 is fixedly installed on the top surface of the threaded rod 11, a threaded sleeve 10 is threadedly installed on the side surface of the threaded rod 11, and a sealing cover kit is fixedly installed on the bottom end surface of the threaded sleeve 10.

[0031] A bearing seat 12 is fixedly mounted on the bottom end surface of the threaded rod 11 , a valve stem 15 is fixedly mounted on the bottom end surface of the bearing seat 12 , and a valve core 16 is fixedly mounted on the bottom end surface of the valve stem 15 .

[0032] The valve body 1 is provided with a through groove running through the upper and lower parts, an isolation disk 13 is fixedly installed on the inner wall of the through groove, a sealing assembly 14 is fixedly installed on the inner wall of the isolation disk 13, the inner wall of the sealing assembly 14 is squeezed and contacted with the side of the valve stem 15, and the sealing performance of the device can be improved by installing the sealing assembly 14, the sealing member 17 and the rubber pad 19, and the practicability and service life of the device can be further improved. A circulation chamber 2 is fixedly provided inside the valve body 1, an installation ring 18 is fixedly installed on the inner wall of the circulation chamber 2, a groove is fixedly provided inside the installation ring 18, the inner wall of the groove is adapted to the side of the valve core 16, a rubber pad 19 is fixedly installed on the inner wall of the groove, a seal 17 is fixedly installed on the side of the valve stem 15, and the bottom end face of the seal 17 is squeezed and contacted with the inside of the circulation chamber 2.

[0033] Working principle: When in use, the valve body 1 is connected to the pipeline, and the water flow is filtered twice through the filter plate 1 6 and the filter plate 2 7 to remove most of the impurities. Further, when the valve core 16 needs to be closed, the handle 24 is held tightly and rotated to drive the threaded rod 11 to rotate, and cooperates with the threaded sleeve 10 to drive the threaded rod 11 to move downward, and push the valve stem 15 to move downward, and then push the valve core 16 to move downward. The surface of the valve core 16 first contacts the rubber scraper 23 to scrape off the impurities on the surface of the valve core 16, and then clean the valve core 16, and further push the valve core 16 and the rubber pad 19 to squeeze each other to complete the sealing.

[0034] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A cage-type single-seat regulating valve, comprising a valve body (1) and a mounting ring (18), characterized in that: A mounting sleeve (20) is fixedly mounted on the top surface of the mounting ring (18), a damping rod (21) is fixedly mounted on the inner wall of the mounting sleeve (20), a return spring (22) is fixedly mounted on the inner wall of the mounting sleeve (20), the return spring (22) is sleeved on the side of the damping rod (21), a rubber scraper (23) is fixedly mounted on the other end surface of the damping rod (21), and the other end of the return spring (22) is fixedly connected to the side of the rubber scraper (23).

2. A cage-type single-seat regulating valve according to claim 1, characterized in that: A water inlet (3) is fixedly provided on the side of the valve body (1), a water outlet (4) is fixedly provided on the side of the valve body (1), a connecting flange (5) is fixedly installed on the side of the valve body (1), a filter plate 1 (6) is clamped and installed on the inner wall of the water inlet (3), and a filter plate 2 (7) is clamped and installed on the inner wall of the water inlet (3).

3. The cage-type single-seat regulating valve according to claim 1, characterized in that: A fixing bolt (9) is threadedly mounted on the top surface of the valve body (1), a valve cover (8) is fastened to the top surface of the valve body (1) via the fixing bolt (9), a threaded rod (11) is fixedly mounted on the inner wall of the valve cover (8), a handle (24) is fixedly mounted on the top surface of the threaded rod (11), a threaded sleeve (10) is threadedly mounted on the side surface of the threaded rod (11), and a sealing cover kit is fixedly mounted on the bottom surface of the threaded sleeve (10).

4. A cage-type single-seat regulating valve according to claim 3, characterized in that: A bearing seat (12) is fixedly mounted on the bottom end surface of the threaded rod (11), a valve stem (15) is fixedly mounted on the bottom end surface of the bearing seat (12), and a valve core (16) is fixedly mounted on the bottom end surface of the valve stem (15).

5. The cage-type single-seat regulating valve according to claim 1, characterized in that: The valve body (1) is provided with a through slot extending through the top and bottom, an isolation disc (13) is fixedly mounted on the inner wall of the through slot, a sealing assembly (14) is fixedly mounted on the inner wall of the isolation disc (13), and the inner wall of the sealing assembly (14) is in compression contact with the side of the valve stem (15).

6. The cage-type single-seat regulating valve according to claim 1, characterized in that: A circulation chamber (2) is fixedly provided inside the valve body (1), a mounting ring (18) is fixedly mounted on the inner wall of the circulation chamber (2), a groove is fixedly provided inside the mounting ring (18), the inner wall of the groove is adapted to the side surface of the valve core (16), and a rubber pad (19) is fixedly mounted on the inner wall of the groove.

7. The cage-type single-seat regulating valve according to claim 4, characterized in that: A sealing member (17) is fixedly mounted on the side of the valve stem (15), and a bottom end surface of the sealing member (17) is extrusion-contacted and connected with the interior of the circulation chamber (2).

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