Ball valve with movable valve seat

Abstract

The utility model discloses a ball valve with a movable valve seat, which comprises a ball valve main body and a valve seat main body, a ball body is rotatably arranged in an inner cavity of the ball valve main body, the valve seat main body is arranged in the inner cavity of the ball valve main body, a fixing ring is fixedly arranged in the inner cavity of the ball valve main body, and a positioning component is arranged on the fixing ring. The positioning assembly comprises a telescopic unit arranged in an inner cavity of the fixing ring; according to the ball valve with the movable valve seat, the valve seat body is driven to move by rotating the rotating plate, so that the valve seat body is further attached to the outer wall of the ball body, the sealing performance between the valve seat body and the ball body is improved, the leakage phenomenon is reduced, the service life is prolonged, and multiple sets of positioning holes correspond to different limiting positions; a user can adjust and control according to the positions of the ball body and the valve seat body after abrasion, the application range is widened, and use is convenient.

Description

Technical Field

[0001] The utility model specifically relates to a ball valve with a movable valve seat. Background Art

[0002] The ball valve is mainly composed of a valve body, a valve seat, a ball, and a valve stem connected to the ball. In actual applications, the valve seat and the sealing surface of the ball are in close contact to achieve a sealing effect, thereby ensuring the circulation and cutoff of the fluid.

[0003] In the prior art, the opening and closing of the valve is mainly achieved by the rotation of the ball, but the existing ball valve seat has certain limitations during use. Most of the existing valve seats are installed in the valve body in a fixed manner. After the valve is used for a long time, wear occurs between the ball and the valve seat, resulting in a gap between the ball and the valve seat, which causes leakage when the valve is used, affecting the use effect. Therefore, a ball valve with a movable valve seat is proposed to solve the above problem. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] The purpose of the utility model is to address the deficiencies of the prior art and provide a ball valve with a movable valve seat, so as to achieve the goal of making the valve seat body and the outer wall of the sphere further fit together, which is beneficial to improving the sealing between the valve seat body and the sphere, reducing leakage, and extending the service life. Moreover, through multiple groups of positioning holes corresponding to different limit positions, the user can adjust the position of the sphere and the valve seat body after wear, thereby improving its scope of application and facilitating use.

[0006] (II) Technical solution

[0007] To achieve the above objectives, the utility model is implemented through the following technical solutions: a ball valve with a movable valve seat, comprising:

[0008] A ball valve body and a valve seat body, wherein a ball is rotatably arranged in the inner cavity of the ball valve body, and the valve seat body is arranged in the inner cavity of the ball valve body, a fixing ring is fixedly arranged in the inner cavity of the ball valve body, and a positioning assembly is arranged on the fixing ring, and the positioning assembly includes:

[0009] A telescopic unit is arranged in the inner cavity of the fixing ring, and is used to adjust the use position of the valve seat body;

[0010] The fixing unit is arranged on the telescopic unit and is used to fix the use position of the valve seat body.

[0011] Preferably, the telescopic unit comprises:

[0012] A slide rod is fixedly arranged on the valve seat body, and a threaded hole is formed on the outer wall of the slide rod;

[0013] The rotating screw rod has a connecting groove on the outer wall of the fixing ring, and the rotating screw rod is rotatably arranged in the inner cavity of the connecting groove, and the threaded hole on the outer wall of the sliding rod is threadedly connected to the outer wall of the rotating screw rod.

[0014] Preferably, a circular hole is provided on the outer wall of the fixing ring, and a rotating plate is rotatably inserted into the inner wall of the circular hole provided on the outer wall of the fixing ring, and one end of the rotating plate is fixedly connected to the outer wall of the rotating screw.

[0015] Preferably, the fixing unit comprises:

[0016] A connecting block, which is fixedly arranged on the outer wall of the rotating plate, and a circular hole is opened on the outer wall of the rotating plate;

[0017] The fixing screw is movably inserted into the inner wall of the circular hole opened on the outer wall of the rotating plate. The outer wall of the fixing ring is provided with a positioning hole, and one end of the fixing screw is threadedly connected in the positioning hole.

[0018] Preferably, a sliding groove is provided on the outer wall of the fixing ring, a moving rod is fixedly provided on the outer wall of the valve seat body, and the moving rod is movably engaged in the inner wall of the sliding groove.

[0019] The utility model discloses a ball valve with a movable valve seat, which has the following beneficial effects: the ball valve with a movable valve seat, by setting a connection relationship between a ball valve body, a ball, a valve seat body, a sliding rod and a rotating screw, enables the valve seat body to move by rotating a rotating plate, so that the valve seat body and the outer wall of the ball are further fitted together, which is beneficial to improving the sealing between the valve seat body and the ball, reducing leakage, and extending the service life; and through a plurality of groups of positioning holes corresponding to different limit positions, the user can adjust the position of the ball and the valve seat body after wear, thereby improving its scope of application and facilitating use. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0022] Figure 2 This is a cross-sectional view of the main structure of the ball valve of the utility model;

[0023] Figure 3This is a cross-sectional view of the fixing ring structure of the utility model;

[0024] Figure 4 This is a schematic diagram of the structure of the mobile rod of the utility model;

[0025] Figure 5 This is a schematic diagram of the structure of the rotating plate of the utility model.

[0026] In the figure: 1, ball valve body; 101, ball; 2, valve seat body; 201, sliding rod; 202, moving rod; 3, fixing ring; 301, connecting groove; 302, rotating screw; 303, rotating plate; 304, connecting block; 305, positioning hole; 306, fixing screw; 307, sliding groove. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution in the embodiments of the utility model is described clearly and completely. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of 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.

[0028] The embodiment of the present application provides a ball valve with a movable valve seat, which solves the problem that most of the existing valve seats are installed in a fixed manner in the valve body. After the valve is used for a long time, wear occurs between the ball 101 and the valve seat, resulting in a gap between the ball 101 and the valve seat, which causes the valve to leak when in use, affecting the use effect. The valve seat body 2 is further fitted with the outer wall of the ball 101, which is beneficial to improve the sealing between the valve seat body 2 and the ball 101, reduce leakage, and extend the service life. In addition, through multiple groups of positioning holes 305 corresponding to different limit positions, the user can adjust the position of the ball 101 and the valve seat body 2 after wear, thereby improving its scope of application and facilitating use.

[0029] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0030] The utility model discloses a ball valve with a movable valve seat. Figure 1-5 As shown, including:

[0031] The ball valve body 1 and the valve seat body 2, the ball valve body 1 is rotatably provided with a ball 101 in the inner cavity, and the valve seat body 2 is provided in the inner cavity of the ball valve body 1, the valve seat body 2 is provided with two groups, symmetrically distributed on both sides of the ball 101, and the outer wall of the valve seat body 2 is fixedly provided with a sealing gasket, which is conducive to reducing leakage, the inner cavity of the ball valve body 1 is fixedly provided with a fixing ring 3, and the fixing ring 3 is provided with a positioning component, which includes:

[0032] A telescopic unit, which is arranged in the inner cavity of the fixing ring 3 and is used to adjust the use position of the valve seat body 2;

[0033] The fixing unit is arranged on the telescopic unit, and is used to fix the use position of the valve seat body 2.

[0034] The telescopic unit includes:

[0035] The slide rod 201 is fixedly mounted on the valve seat body 2, and a threaded hole is formed on the outer wall of the slide rod 201;

[0036] The rotating screw 302 has a connecting groove 301 on the outer wall of the fixing ring 3, and the rotating screw 302 is rotatably arranged in the inner cavity of the connecting groove 301, and the threaded hole on the outer wall of the sliding rod 201 is threadedly connected to the outer wall of the rotating screw 302. By rotating the screw 302 clockwise, the sliding rod 201 is driven to move toward the direction of the sphere 101, so that the moving sliding rod 201 drives the valve seat body 2 to move, so that the valve seat body 2 is more closely attached to the outer wall of the sphere 101, thereby improving the sealing performance of the valve.

[0037] A circular hole is provided on the outer wall of the fixing ring 3, and a rotating plate 303 is rotatably inserted into the inner wall of the circular hole on the outer wall of the fixing ring 3, and one end of the rotating plate 303 is fixedly connected to the outer wall of the rotating screw 302, which is used to extend the action point of the rotating screw 302 to facilitate user operation. The user drives the rotating screw 302 to rotate by rotating the rotating plate 303, thereby moving the sliding rod 201.

[0038] The fixed unit includes:

[0039] A connecting block 304 is fixedly mounted on the outer wall of the rotating plate 303, and a circular hole is formed on the outer wall of the rotating plate 303;

[0040] The fixing screw 306 is movably inserted into the inner wall of the circular hole opened on the outer wall of the rotating plate 303. A positioning hole 305 is opened on the outer wall of the fixing ring 3, and one end of the fixing screw 306 is threadedly connected to the positioning hole 305. There are multiple groups of positioning holes 305 corresponding to different limit positions. The user can adjust them according to the position of the ball 101 to improve its application range. When the valve seat body 2 moves to the corresponding position, the rotation of the rotating plate 303 is stopped. At this time, the circular hole on the connecting block 304 is aligned with the corresponding positioning hole 305, and the fixing screw 306 is inserted into the corresponding positioning hole 305 through the circular hole on the connecting block 304, and the fixing screw 306 is rotated to be tightened in the corresponding positioning hole 305, so that the position of the rotating plate 303 is fixed, thereby fixing the position of the valve seat body 2, which is convenient for use.

[0041] A sliding groove 307 is provided on the outer wall of the fixed ring 3, and a moving rod 202 is fixedly provided on the outer wall of the valve seat body 2, and the moving rod 202 is movably engaged in the inner wall of the sliding groove 307. The moving rod 202 moves in the inner cavity of the sliding groove 307, so that the moving path and moving range of the valve seat body 2 are restricted.

[0042] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A ball valve with a movable valve seat, comprising a ball valve body (1) and a valve seat body (2), wherein a ball (101) is rotatably arranged in the inner cavity of the ball valve body (1), and the valve seat body (2) is arranged in the inner cavity of the ball valve body (1), characterized in that: A fixing ring (3) is fixedly arranged in the inner cavity of the ball valve body (1), and a positioning assembly is arranged on the fixing ring (3), the positioning assembly comprising: A telescopic unit, which is arranged in the inner cavity of the fixing ring (3), and is used to adjust the use position of the valve seat body (2); A fixing unit is arranged on the telescopic unit, and is used to fix the use position of the valve seat body (2).

2. A ball valve with a movable valve seat as claimed in claim 1, characterized in that: The telescopic unit comprises: A sliding rod (201) is fixedly arranged on the valve seat body (2), and a threaded hole is formed on the outer wall of the sliding rod (201); A rotating screw rod (302) is provided with a connecting groove (301) on the outer wall of the fixing ring (3), and the rotating screw rod (302) is rotatably arranged in the inner cavity of the connecting groove (301), and a threaded hole provided on the outer wall of the sliding rod (201) is threadedly connected to the outer wall of the rotating screw rod (302).

3. A ball valve with a movable valve seat as claimed in claim 2, characterized in that: The outer wall of the fixing ring (3) is provided with a circular hole, and a rotating plate (303) is rotatably inserted into the inner wall of the circular hole provided in the outer wall of the fixing ring (3), and one end of the rotating plate (303) is fixedly connected to the outer wall of the rotating screw (302).

4. A ball valve with a movable valve seat as claimed in claim 3, characterized in that: The fixing unit comprises: A connecting block (304) is fixedly arranged on the outer wall of the rotating plate (303), and a circular hole is formed on the outer wall of the rotating plate (303); The fixing screw (306) is movably inserted into the inner wall of the circular hole opened on the outer wall of the rotating plate (303). The outer wall of the fixing ring (3) is provided with a positioning hole (305), and one end of the fixing screw (306) is threadedly connected in the positioning hole (305).

5. A ball valve with a movable valve seat as claimed in claim 4, characterized in that: The outer wall of the fixed ring (3) is provided with a sliding groove (307), and the outer wall of the valve seat body (2) is fixedly provided with a moving rod (202), and the moving rod (202) is movably engaged in the inner wall of the sliding groove (307).

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