Corrosion-resistant valve seat convenient to install

Abstract

The utility model discloses an anti-corrosion valve seat convenient to install, which comprises a valve seat body, the front side wall of the valve seat body is fixedly connected with a connecting pipe, the connecting pipe is in threaded connection with a fastening assembly and a sealing assembly, and the fastening assembly comprises a fastening ring, a front clamping groove, a rear clamping groove, a threaded surface, an outer ring and anti-skid teeth. A front clamping groove and a rear clamping groove are formed in the inner circumferential face of the fastening ring, and a threaded face is arranged on the inner circumferential face of the fastening ring. By means of the structure, when a pipeline is installed, the sealing ring is connected with the interior of the fastening ring in a clamped mode, the pipeline is directly inserted into the fastening ring and the sealing ring to be in butt joint with the connecting pipe, then the fastening ring is rotated, the internal sealing ring is pressed, the sealing ring is deformed, part of the sealing ring can be connected to threads between the fastening ring and the pipeline and threads between the fastening ring and the connecting pipe in a clamped mode, and therefore sealing is completed. The sealing performance is good, the installation is very convenient, and the installation convenience is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic valve seats, and particularly relates to an anti-corrosion valve seat which is convenient for installation. Background Technique

[0002] The hydraulic valve seat is an important component in the hydraulic system. It is usually located inside the valve block and is used to support and position various components inside the valve. The design of the hydraulic valve seat requires the ability to withstand high pressures, and at the same time, good sealing performance needs to be ensured. In the hydraulic system, the role of the hydraulic valve seat is to ensure the smooth flow of the liquid, prevent leakage, and ensure the normal operation of the system.

[0003] The existing hydraulic valve seats are generally locked with the pipeline through bolts and flanges, and a sealing gasket is arranged inside for sealing. When installing and disassembling, it is necessary to turn multiple bolts to carry out maintenance and installation, which is very inconvenient. Content of the Utility Model

[0004] The purpose of the utility model is to provide an anti-corrosion valve seat which is convenient for installation. When installing the pipeline, the sealing ring and the fastening ring are internally clamped. The pipeline is directly inserted into the fastening ring and the sealing ring and butted with the connecting pipe. Then, the fastening ring is rotated to press the internal sealing ring, so that the sealing ring deforms. Part of the sealing ring can be clamped on the threads between the fastening ring, the pipeline and the connecting pipe, thereby completing the sealing. It not only has good sealing performance, but also is extremely convenient for installation, greatly improving the convenience of installation.

[0005] To achieve the above purpose, an anti-corrosion valve seat which is convenient for installation is provided, including: a valve seat body, a connecting pipe is fixedly connected to the front side wall of the valve seat body, a fastening component and a sealing component are threadedly connected to the connecting pipe. The fastening component includes a fastening ring, a front clamping groove, a rear clamping groove, a threaded surface, an outer ring and anti-slip teeth. The inner circumferential surface of the fastening ring is provided with a front clamping groove and a rear clamping groove. The inner circumferential surface of the fastening ring is provided with a threaded surface. The outer ring is fixedly connected to the circumferential surface of the fastening ring. The anti-slip teeth are uniformly arranged on the circumferential surface of the outer ring. The sealing component includes a sealing ring, a wedge surface, a front stop block, a front clamping block, a rear stop block and a rear clamping block. The inner circumferential surface of the sealing ring is provided with a wedge surface. The front stop block is fixedly connected to the front side wall of the sealing ring. The front clamping block is fixedly connected to the rear side wall of the front stop block. The rear stop block is fixedly connected to the rear side wall of the sealing ring. The rear clamping block is fixedly connected to the front side wall of the rear stop block.

[0006] According to the described anti-corrosion valve seat that is easy to install, the sealing ring, front stop block, front clamping block, rear stop block, and rear clamping block are integrally formed and are all made of polytetrafluoroethylene. Polytetrafluoroethylene is a high-molecular compound with excellent chemical stability and corrosion resistance. It can resist the corrosion of most acids, alkalis, salts, and oxidants, and even aqua regia cannot corrode it. PTFE material is suitable for transporting strong acids, strong alkalis, and high-temperature liquids, and has excellent heat resistance. It can work long-term within the temperature range of -192°C to 260°C, and the material is soft, easy to deform, and convenient for sealing.

[0007] According to the described anti-corrosion valve seat that is easy to install, the fastening ring, outer ring, and anti-slip teeth are integrally formed, and an anti-corrosion coating is provided on the inner circumferential surface of the fastening ring. Rotating the outer ring can make the fastening ring rotate, thereby performing the locking operation, while improving the anti-corrosion ability of the fastening ring and extending its service life.

[0008] According to the described anti-corrosion valve seat that is easy to install, the wedge surface forms an angle of 0.5 degrees with the horizontal line and the opening faces forward. When connecting, it is convenient for the insertion and locking of the pipeline.

[0009] According to the described anti-corrosion valve seat that is easy to install, the front card slot and the rear card slot are symmetrically distributed front and rear inside the fastening ring. The front stop block and the front clamping block are both clamped inside the front card slot, and the rear stop block and the rear clamping block are both clamped inside the rear card slot. It is used to clamp the sealing ring and form a stable fixation to prevent the sealing ring from being misaligned during the locking process.

[0010] According to the described anti-corrosion valve seat that is easy to install, the sealing ring is sleeved on the connecting pipe and has an interference fit. The sealing ring tightly fits on the circumferential surface of the connecting pipe, improving the sealing performance when performing locking and sealing.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows: By providing the valve seat body, connecting pipe, fastening ring, front card slot, rear card slot, threaded surface, outer ring, anti-slip teeth, sealing ring, wedge surface, front stop block, front clamping block, rear stop block, and rear clamping block, when installing the pipeline, the sealing ring is clamped inside the fastening ring. The pipeline is directly inserted into the fastening ring and the sealing ring to be docked with the connecting pipe, and then the fastening ring is rotated to compress the internal sealing ring, causing the sealing ring to deform. Part of the sealing ring can even be clamped on the thread between the fastening ring and the pipeline and the connecting pipe, thereby completing the sealing. It not only has good sealing performance but also is extremely convenient to install, greatly improving the convenience of installation.

[0012] The additional aspects and advantages of the present utility model will be partially given in the following description, partially will become obvious from the following description, or will be understood through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The present utility model will be further described below in conjunction with the accompanying drawings and embodiments;

[0014] Figure 1 The front view of an anti-corrosion valve seat that is convenient for installation according to the present utility model;

[0015] Figure 2 The structural diagram of the valve seat body of an anti-corrosion valve seat that is convenient for installation according to the present utility model;

[0016] Figure 3 The sectional view of the fastening assembly of an anti-corrosion valve seat that is convenient for installation according to the present utility model;

[0017] Figure 4 The sectional view of the sealing assembly of an anti-corrosion valve seat that is convenient for installation according to the present utility model.

[0018] In the figure: 1. Valve seat body; 2. Connecting pipe; 3. Fastening assembly; 4. Sealing assembly; 301. Fastening ring; 302. Front card slot; 303. Rear card slot; 304. Threaded surface; 305. Outer ring; 306. Anti-slip teeth; 401. Sealing ring; 402. Wedge surface; 403. Front stop block; 404. Front clamping block; 405. Rear stop block; 406. Rear clamping block. Specific embodiments

[0019] The technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0020] Please refer to Figures 1-4, the present utility model provides a technical solution: an anti-corrosion valve seat that is easy to install, including: a valve seat body 1, a connecting pipe 2 is fixedly connected to the front side wall of the valve seat body 1, a fastening assembly 3 and a sealing assembly 4 are threadedly connected to the connecting pipe 2. The fastening assembly 3 includes a fastening ring 301, a front slot 302, a rear slot 303, a threaded surface 304, an outer ring 305 and anti-slip teeth 306. Front slots 302 and rear slots 303 are provided on the inner circumferential surface of the fastening ring 301, and the front slots 302 and rear slots 303 are symmetrically distributed front and rear inside the fastening ring 301. A threaded surface 304 is provided on the inner circumferential surface of the fastening ring 301. An outer ring 305 is fixedly connected to the circumferential surface of the fastening ring 301, and anti-slip teeth 306 are evenly provided on the circumferential surface of the outer ring 305. When tightening, it improves the anti-slip property during rotation. The fastening ring 301, the outer ring 305 and the anti-slip teeth 306 are integrally formed. An anti-corrosion coating is provided on the inner circumferential surface of the fastening ring 301. Rotating the outer ring 305 can make the fastening ring 301 rotate, thereby performing the tightening operation, and at the same time improving the anti-corrosion ability of the fastening ring 301 and extending its service life.

[0021] The sealing assembly 4 includes a sealing ring 401, a wedge surface 402, a front stopper 403, a front catch 404, a rear stopper 405 and a rear catch 406. A wedge surface 402 is provided on the inner circumferential surface of the sealing ring 401. The wedge surface 402 forms an angle of 0.5 degrees with the horizontal line and the opening faces forward. When connecting, it is convenient for the pipeline to be directly inserted from the wedge surface 402 and for loosening operation. A front stopper 403 is fixedly connected to the front side wall of the sealing ring 401, a front catch 404 is fixedly connected to the rear side wall of the front stopper 403, a rear stopper 405 is fixedly connected to the rear side wall of the sealing ring 401, and a rear catch 406 is fixedly connected to the front side wall of the rear stopper 405. The sealing ring 401, the front stopper 403, the front catch 404, the rear stopper 405 and the rear catch 406 are integrally formed and are all made of polytetrafluoroethylene. Polytetrafluoroethylene is a high molecular compound with excellent chemical stability and corrosion resistance, capable of resisting the corrosion of most acids, alkalis, salts and oxidants, and even aqua regia cannot corrode it. The PTFE material is suitable for transporting strong acids, strong alkalis and high-temperature liquids, and has excellent temperature resistance, can work continuously in the temperature range of -192°C to 260°C, and the material is soft and easy to deform, which is convenient for sealing. The sealing ring 401 is sleeved on the connecting pipe 2 and has an interference fit. The sealing ring 401 tightly fits on the circumferential surface of the connecting pipe 2. When tightening and sealing, it improves the sealing performance.

[0022] Both the front stopper 403 and the front catch 404 are clamped inside the front slot 302, and both the rear stopper 405 and the rear catch 406 are clamped inside the rear slot 303, which is used to clamp the sealing ring 401 and form a stable fixation to prevent the sealing ring 401 from being misaligned during the tightening process.

[0023] Working principle: The sealing ring 401 is clamped with the fastening ring 301 through the front stop block 403, front clamping block 404, rear stop block 405 and rear clamping block 406. Then, the pipeline is inserted into the fastening ring 301 and the sealing ring 401 from the wedge surface 402 and docked with the connecting pipe 2. Then, the outer ring 305 is rotated to make the fastening ring 301 and the internal sealing ring 401 rotate together. The fastening ring 301 and the sealing ring 401 move forward simultaneously. The sealing ring 401 fits against the outer circumferential surface of the pipeline and is continuously squeezed and deformed during the forward movement of the fastening ring 301, so as to fit tightly with both the pipeline and the connecting pipe 2. At the same time, after the sealing ring 401 is deformed, part of it is stuck on the threads between the fastening ring 301, the pipeline and the connecting pipe 2, greatly improving the connection tightness.

[0024] The embodiments of the present utility model have been described in detail above in conjunction with the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those of ordinary skill in the art to which it pertains, various changes can also be made without departing from the gist of the present utility model.

Claims

1. An anti-corrosion valve seat that is easy to install, comprising: Valve seat body (1), characterized in that a connecting pipe (2) is fixedly connected to the front side wall of the valve seat body (1), and a fastening assembly (3) and a sealing assembly (4) are threadedly connected to the connecting pipe (2). The fastening assembly (3) includes a fastening ring (301), a front card slot (302), a rear card slot (303), a threaded surface (304), an outer ring (305), and anti-slip teeth (306). A front card slot (302) and a rear card slot (303) are provided on the inner circumferential surface of the fastening ring (301), a threaded surface (304) is provided on the inner circumferential surface of the fastening ring (301), an outer ring (305) is fixedly connected to the circumferential surface of the fastening ring (301), and anti-slip teeth (306) are uniformly provided on the circumferential surface of the outer ring (305). The sealing assembly (4) includes a sealing ring (401), a wedge surface (402), a front stop block (403), a front clamping block (404), a rear stop block (405), and a rear clamping block (406). A wedge surface (402) is provided on the inner circumferential surface of the sealing ring (401), a front stop block (403) is fixedly connected to the front side wall of the sealing ring (401), a front clamping block (404) is fixedly connected to the rear side wall of the front stop block (403), a rear stop block (405) is fixedly connected to the rear side wall of the sealing ring (401), and a rear clamping block (406) is fixedly connected to the front side wall of the rear stop block (405).

2. The anti-corrosion valve seat as claimed in claim 1, wherein: The fastening ring (301), the outer ring (305), and the anti-slip teeth (306) are integrally formed, and an anti-corrosion coating is provided on the inner circumferential surface of the fastening ring (301).

3. The anti-corrosion valve seat as claimed in claim 1, wherein: The sealing ring (401), the front stop block (403), the front clamping block (404), the rear stop block (405), and the rear clamping block (406) are integrally formed and are all made of polytetrafluoroethylene material.

4. The anti-corrosion valve seat according to claim 1, characterized in that: The wedge surface (402) forms an angle of 0.5 degrees with the horizontal line and the opening faces forward.

5. The anti-corrosion valve seat according to claim 1, characterized in that: Both the front stop block (403) and the front clamping block (404) are clamped inside the front card slot (302), and both the rear stop block (405) and the rear clamping block (406) are clamped inside the rear card slot (303).

6. The anti-corrosion valve seat as claimed in claim 1, wherein: The front card slot (302) and the rear card slot (303) are symmetrically distributed front and rear inside the fastening ring (301).

7. The anti-corrosion valve seat as claimed in claim 1, wherein: The sealing ring (401) is sleeved on the connecting pipe (2) and has an interference fit.

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