Corrosion-resistant valve seat

Abstract

The utility model discloses a corrosion-resistant valve seat which comprises a valve seat body, a corrosion-resistant coating is arranged on the inner surface of the valve seat body, the valve seat body is of an annular structure, a valve seat baffle ring is detachably installed on one side of the valve seat body, and a second sealing ring is installed between the valve seat baffle ring and the valve seat body. An upper shaft barrel is mounted at the top of the valve seat main body; an upper wear-resistant sleeve is mounted on the inner wall of the upper shaft barrel; a lower shaft barrel is installed at the bottom of the valve seat body, and a lower abrasion-resistant sleeve is installed on the inner wall of the lower shaft barrel. According to the utility model, the corrosion-resistant coating is arranged on the inner surface of the valve seat main body and is used for improving the corrosion resistance of the valve seat main body; the valve seat baffle ring is fixed to the valve seat body through the multiple bolts, the valve seat baffle ring is convenient to disassemble, and the second sealing ring is installed between the valve seat baffle ring and the valve seat body and used for improving the sealing performance between the valve seat baffle ring and the valve seat body.

Description

Technical Field

[0001] The utility model relates to the technical field of valve seats, in particular to a corrosion-resistant valve seat. Background Technique

[0002] The control of the valve for the fluid medium is mainly realized through the sealing fit between the valve seat and the valve core. The existing sealing fit between the valve seat and the valve core is mainly divided into two types: hard seal and soft seal. According to different operating conditions of the valve and different fluid media to be controlled, the appropriate sealing method is selected. Among them, the hard seal is realized by the way of abutting between the valve seat and the valve core, and the soft seal is to set a sealing ring between the valve seat and the valve core, and the sealing is realized through the sealing ring.

[0003] A valve seat disclosed in the existing Chinese patent with the publication number CN210344516U includes a valve seat body. The valve seat body includes a first valve seat part and a second valve seat part. An installation ring groove is formed between the first valve seat part and the second valve seat part. The installation ring groove communicates with the inner peripheral wall of the valve seat body. A sealing member is arranged in the installation ring groove. The first valve seat part and the second valve seat part are threadedly connected. Deformation convex rings surrounding the center of the installation ring groove are arranged on one end face of the first valve seat part abutting against the sealing member and one end face of the second valve seat part abutting against the sealing member. A deformation ring groove adapted to the deformation convex ring is arranged at the position of the sealing member corresponding to the deformation convex ring. A first ring groove for installing a sealing ring is arranged on one end face of the first valve seat part facing away from the installation ring groove, and a second ring groove for installing a sealing ring is arranged on the outer peripheral wall of the second valve seat part; it has the following advantages and effects: The utility model can realize hard seal or soft seal.

[0004] Although the existing technology realizes the sealing function, its corrosion resistance effect is poor. For this reason, we propose a corrosion-resistant valve seat. Content of the Utility Model

[0005] The purpose of the utility model is to provide a corrosion-resistant valve seat to solve the problems in the existing technology.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A corrosion-resistant valve seat includes a valve seat body. A corrosion-resistant coating is arranged on the inner surface of the valve seat body. The valve seat body is of a ring structure. A valve seat retaining ring is detachably installed on one side of the valve seat body. A second sealing ring is installed between the valve seat retaining ring and the valve seat body; An upper shaft cylinder is installed on the top of the valve seat body, and an upper wear-resistant sleeve is installed on the inner wall of the upper shaft cylinder; A lower shaft cylinder is installed on the bottom of the valve seat body, and a lower wear-resistant sleeve is installed on the inner wall of the lower shaft cylinder.

[0007] Preferably, reinforcing plates are installed between both sides of the upper shaft cylinder and the valve seat body, and the valve seat retaining ring is fixed on the valve seat body through a plurality of bolts.

[0008] Preferably, a bushing is installed on the upper part of the upper shaft cylinder, and a plurality of first sealing rings are installed between the bushing and the upper wear-resistant sleeve.

[0009] Preferably, a head is installed at the bottom end of the lower shaft cylinder, a third sealing ring is installed between the head and the lower shaft cylinder, and a bottom plate is arranged between the head and the lower wear-resistant sleeve.

[0010] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0011] 1. A corrosion-resistant coating is provided on the inner surface of the valve seat body, and the corrosion-resistant coating is used to improve the corrosion resistance of the valve seat body.

[0012] 2. The valve seat retaining ring is fixed to the valve seat body by a plurality of bolts, which facilitates the disassembly of the valve seat retaining ring. A second sealing ring is installed between the valve seat retaining ring and the valve seat body to improve the sealing performance between the valve seat retaining ring and the valve seat body.

[0013] 3. An upper wear-resistant sleeve is installed on the inner wall of the upper shaft cylinder, and the upper wear-resistant sleeve increases the wear resistance of the upper shaft cylinder; a plurality of first sealing rings are installed between the bushing and the upper wear-resistant sleeve, and the first sealing rings are used to improve the sealing effect at the upper shaft cylinder.

[0014] 4. A lower wear-resistant part is installed on the inner wall of the lower shaft cylinder, a third sealing ring is installed between the head and the lower shaft cylinder, and the third sealing ring improves the sealing effect at the lower shaft cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings are used to provide a further understanding of the present utility model, and constitute a part of the specification. Together with the embodiments of the present utility model, they are used to explain the present utility model, and do not constitute a limitation to the present utility model. In the drawings:

[0016] Figure 1 is a schematic structural diagram of the present utility model;

[0017] Figure 2 is a front view of the present utility model;

[0018] Figure 3 is a sectional view of the present utility model.

[0019] In the figure: 1. Valve seat body; 2. Reinforcement plate; 3. Upper shaft cylinder; 4. Bushing; 5. Lower shaft cylinder; 6. Head; 7. Bolt; 8. Valve seat retaining ring; 9. First sealing ring; 10. Upper wear-resistant sleeve; 11. Second sealing ring; 12. Bottom plate; 13. Lower wear-resistant sleeve; 14. Third sealing ring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Apparently, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the scope of protection of the present utility model. Therefore, the detailed description of the embodiments of the present utility model provided in the accompanying drawings is not intended to limit the scope of the present utility model claimed, but merely represents selected embodiments of the present utility model.

[0021] Please refer to Figures 1-3 , in an embodiment of the present utility model, a corrosion-resistant valve seat includes a valve seat body 1. A corrosion-resistant coating (a metal anti-corrosion nano-coating) is provided on the inner surface of the valve seat body 1. The corrosion-resistant coating is used to improve the corrosion resistance of the valve seat body 1. The valve seat body 1 is of an annular structure. A valve seat retaining ring 8 is detachably installed on one side of the valve seat body 1. The valve seat retaining ring 8 is fixed to the valve seat body 1 by a plurality of bolts 7, which facilitates the disassembly of the valve seat retaining ring 8. A second sealing ring 11 is installed between the valve seat retaining ring 8 and the valve seat body 1 to improve the sealing performance between the valve seat retaining ring 8 and the valve seat body 1;

[0022] An upper shaft cylinder 3 is installed at the top of the valve seat body 1. Reinforcement plates 2 are installed between both sides of the upper shaft cylinder 3 and the valve seat body 1. An upper wear-resistant sleeve 10 is installed on the inner wall of the upper shaft cylinder 3, and the upper wear-resistant sleeve 10 increases the wear resistance of the upper shaft cylinder 3. A shaft sleeve 4 is installed at the upper part of the upper shaft cylinder 3. A plurality of first sealing rings 9 are installed between the shaft sleeve 4 and the upper wear-resistant sleeve 10, and the first sealing rings 9 are used to improve the sealing effect at the upper shaft cylinder 3.

[0023] A lower shaft cylinder 5 is installed at the bottom of the valve seat body 1. A lower wear-resistant sleeve 13 is installed on the inner wall of the lower shaft cylinder 5. A head 6 is installed at the bottom end of the lower shaft cylinder 5. A third sealing ring 14 is installed between the head 6 and the lower shaft cylinder 5, and the third sealing ring 14 improves the sealing effect at the lower shaft cylinder 5. A bottom plate 12 is provided between the head 6 and the lower wear-resistant sleeve 13.

[0024] The working principle of the present utility model is as follows: The inner surface of the valve seat body 1 is provided with a corrosion-resistant coating, which is used to improve the corrosion resistance of the valve seat body 1; the valve seat retaining ring 8 is fixed to the valve seat body 1 by a plurality of bolts 7, facilitating the disassembly of the valve seat retaining ring 8. A second sealing ring 11 is installed between the valve seat retaining ring 8 and the valve seat body 1 to improve the sealing performance between the valve seat retaining ring 8 and the valve seat body 1; an upper wear-resistant sleeve 10 is installed on the inner wall of the upper shaft cylinder 3, and the upper wear-resistant sleeve 10 increases the wear resistance of the upper shaft cylinder 3; an axle sleeve 4 is installed on the upper part of the upper shaft cylinder 3, and a plurality of first sealing rings 9 are installed between the axle sleeve 4 and the upper wear-resistant sleeve 10. The first sealing rings 9 are used to improve the sealing effect at the upper shaft cylinder 3; a lower wear-resistant sleeve 13 is installed on the inner wall of the lower shaft cylinder 5, and a head 6 is installed at the bottom end of the lower shaft cylinder 5. A third sealing ring 14 is installed between the head 6 and the lower shaft cylinder 5, and the third sealing ring 14 improves the sealing effect at the lower shaft cylinder 5.

[0025] Finally, it should be noted that the above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A corrosion-resistant valve seat, comprising a valve seat body (1), characterized in that: The inner surface of the valve seat body (1) is provided with a corrosion-resistant coating. The valve seat body (1) is an annular structure. A valve seat retaining ring (8) is detachably mounted on one side of the valve seat body (1). A second sealing ring (11) is mounted between the valve seat retaining ring (8) and the valve seat body (1). An upper shaft cylinder (3) is installed on the top of the valve seat body (1), and an upper wear-resistant sleeve (10) is installed on the inner wall of the upper shaft cylinder (3); a lower shaft cylinder (5) is installed on the bottom of the valve seat body (1), and a lower wear-resistant sleeve (13) is installed on the inner wall of the lower shaft cylinder (5).

2. The corrosion-resistant valve seat according to claim 1, characterized in that: Reinforcement plates (2) are installed between the two sides of the upper shaft cylinder (3) and the valve seat body (1), and the valve seat retaining ring (8) is fixed to the valve seat body (1) by a plurality of bolts (7).

3. The corrosion-resistant valve seat according to claim 1, characterized in that: A shaft sleeve (4) is installed on the upper part of the upper shaft cylinder (3), and a plurality of first sealing rings (9) are installed between the shaft sleeve (4) and the upper wear-resistant sleeve (10).

4. The corrosion-resistant valve seat according to claim 1, characterized in that: A sealing head (6) is installed at the bottom end of the lower shaft cylinder (5), a third sealing ring (14) is installed between the sealing head (6) and the lower shaft cylinder (5), and a bottom plate (12) is arranged between the sealing head (6) and the lower wear-resistant sleeve (13).

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