Ball valve with valve seat capable of being pre-adjusted

Abstract

The utility model relates to the technical field of ball valves, and discloses a ball valve with a valve seat capable of being pre-adjusted, which comprises a valve body, a supporting seat and a valve ball, an inclined plane valve seat is arranged at the joint of the supporting seat and the valve ball, the side wall of the inclined plane valve seat is abutted against the side wall of the valve ball, and four sliding chutes are arranged on the side wall of the supporting seat on one side of the inclined plane valve seat. The inner wall of the sliding groove is slidably connected with a sliding rod, and the other end of the sliding rod abuts against the side wall of the valve ball. The valve body, the supporting seat, the valve ball, the slope valve seat, the sliding groove, the sliding rod, the rack, the adjusting device and the like are arranged and used in cooperation, after the valve body, the supporting seat and the valve ball are assembled, the slope valve seat can abut against the side wall of the valve ball, the adjusting device can fix the sliding rod and prevent the slope valve seat from moving at will, and then the problem that when a spring is used, the elasticity of the spring is lost is avoided; and meanwhile, by rotating the adjusting device, the sliding rod moves left and right along the sliding groove, the tightness of the valve ball clamped by the slope valve seat is adjusted, and the valve ball is conveniently fixed.

Description

Technical Field

[0001] The utility model relates to the technical field of ball valves, in particular to a ball valve with a pre-adjustable valve seat. Background Technique

[0002] A ball valve is a valve whose closing part (ball) is driven by a valve stem and rotates around the axis of the ball valve. It can be used for the regulation and control of fluids. Its working principle is that when the ball valve rotates 90 degrees, the spherical surfaces should be fully presented at the inlet and outlet of the ball valve to close the valve and cut off the flow of the medium; when the ball valve rotates back 90 degrees, the spherical openings should be fully presented at the inlet and outlet to open the flow, and there is basically no flow resistance.

[0003] At present, the patent of patent number CN209309365U, a ball valve that can be quickly pre-tightened and adjusted and replaced with a seal, belongs to the technical field of valves, including a valve body, a valve core cavity, a valve seat support body and a hard valve seat. The valve core cavity is arranged inside the valve body, a valve ball is arranged inside the valve core cavity, the valve seat support body is arranged at one end of the valve body and is in contact and cooperation with the valve ball. A hard valve seat, a valve seat ring and a soft valve seat are arranged at the contact part between the valve seat support body and the valve ball. A hard valve seat is arranged at one end of the valve seat support body close to the valve ball, a spring for pressing the hard valve seat is embedded in the valve seat support body, a valve seat ring that contacts and positions the valve seat support body is arranged on the hard valve seat, one end of the soft valve seat is installed in the valve seat ring, and the other end is in close fit with the outer end face of the valve ball. The valve seat support body is in close fit with the valve ball through the soft valve seat. The utility model can greatly improve the assembly efficiency of the valve and the use efficiency of quickly putting it into work.

[0004] However, there are still the following problems:

[0005] After long-term use, the spring in the above device will lose its elasticity, which will affect the use of the valve. At this time, the spring needs to be replaced to continue using, which is rather inconvenient.

[0006] Therefore, we propose a ball valve with a pre-adjustable valve seat to solve the above problems. Content of the Utility Model

[0007] The purpose of the utility model is to propose a ball valve with a pre-adjustable valve seat, which can avoid the problem of spring elasticity loss, and at the same time can adjust the tightness of the valve seat clamping the valve ball, which is convenient for clamping the valve ball.

[0008] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0009] A ball valve with a pre-adjustable valve seat, comprising a valve body, a support seat and a valve ball. An inclined valve seat is provided at the connection between the support seat and the valve ball, and the side wall of the inclined valve seat abuts against the side wall of the valve ball. Four sliding grooves are formed in the side wall of the support seat on one side of the inclined valve seat, and a sliding rod is slidably connected to the inner wall of the sliding groove. The other end of the sliding rod abuts against the side wall of the valve ball, and a rack is formed on the side wall of one of the sliding rods. An adjusting device is provided on one side of the rack.

[0010] Preferably, the adjusting device includes a gear groove formed on one side of the rack. A rotating shaft is rotatably connected to the bottom surface of the gear groove. One end of the rotating shaft penetrates through the side wall of the support seat and is rotatably connected to the support seat. A driving gear is fixedly connected to the side wall of the rotating shaft on one side of the rack, and the driving gear is meshed with the rack.

[0011] Preferably, a fixing block is rotatably connected to the side wall of the rotating shaft, and the bottom surface of the fixing block is fixedly connected to the side wall of the support seat. A set screw hole is formed in the side wall of the fixing block, and a fixing set screw is threadedly connected to the inner wall of the set screw hole. One end of the fixing set screw abuts against the side wall of the rotating shaft.

[0012] Preferably, a pointing arrow is provided on the upper surface of the fixing block.

[0013] Preferably, a sealing groove is formed in the side wall of the inclined valve seat on one side of the support seat, and a sealing plate is slidably connected to the side wall of the sealing groove. The other end of the sealing plate is fixedly connected to the side wall of the support seat.

[0014] Preferably, a sealing gasket is fixedly connected to the bottom surface of the sealing plate, and a valve gasket is fixedly connected to the side wall of the inclined valve seat.

[0015] Compared with the prior art, the present utility model has the following beneficial effects:

[0016] In the present utility model, by arranging the valve body, the support seat, the valve ball, the inclined valve seat, the sliding groove, the sliding rod, the rack and the adjusting device to cooperate with each other, after the valve body, the support seat and the valve ball are assembled, the inclined valve seat will abut against the side wall of the valve ball, and the adjusting device will fix the sliding rod to prevent the inclined valve seat from moving randomly, thereby avoiding the problem of the lack of spring elasticity when using a spring. At the same time, by rotating the adjusting device, the sliding rod moves left and right along the sliding groove, thereby adjusting the tightness of the inclined valve seat clamping the valve ball and facilitating the fixing of the valve ball. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a three-dimensional structural schematic diagram of a ball valve with a pre-adjustable valve seat proposed by the present utility model;

[0018] Figure 2 is a front sectional structural schematic diagram of a ball valve with a pre-adjustable valve seat proposed by the present utility model;

[0019] Figure 3 isFigure 2 Schematic diagram of the enlarged structure at position A in [the figure];

[0020] Figure 4 Top view sectional structure schematic diagram of a ball valve with a pre-adjustable valve seat proposed by the present utility model;

[0021] Figure 5 is Figure 4 Schematic diagram of the enlarged structure at position B in [the figure]

[0022] Figure 6 Side view sectional structure schematic diagram of a ball valve with a pre-adjustable valve seat proposed by the present utility model;

[0023] Figure 7 is Figure 6 Schematic diagram of the enlarged structure at position C in [the figure].

[0024] In the figure: 1, valve body; 2, support seat; 3, valve ball; 4, inclined plane valve seat; 5, chute; 6, slide bar; 7, rack; 8, gear groove; 9, rotating shaft; 10, driving gear; 11, fixed block; 12, fixed set screw; 13, pointing arrow; 14, valve gasket; 15, sealing plate; 16, sealing gasket; 17, sealing groove. Specific implementation manner

[0025] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described 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 making creative efforts shall fall within the protection scope of the present utility model.

[0026] Please refer to Figure 1-7 , a ball valve with a pre-adjustable valve seat, including a valve body 1, a support seat 2 and a valve ball 3. An inclined plane valve seat 4 is provided at the connection between the support seat 2 and the valve ball 3, and the side wall of the inclined plane valve seat 4 abuts against the side wall of the valve ball 3. Four chutes 5 are provided on the side wall of the support seat 2 on one side of the inclined plane valve seat 4, and the inner wall of the chute 5 is slidably connected with a slide bar 6. The other end of the slide bar 6 abuts against the side wall of the valve ball 3, and a rack 7 is provided on the side wall of one of the slide bars 6, and an adjusting device is provided on one side of the rack 7.

[0027] As can be seen from the above structure, by setting the valve body 1, the support seat 2, the valve ball 3, the inclined valve seat 4, the chute 5, the slide bar 6, the rack 7, and the adjusting device to cooperate with each other, after the valve body 1, the support seat 2, and the valve ball 3 are assembled, the inclined valve seat 4 will abut against the side wall of the valve ball 3, and the adjusting device will fix the slide bar 6 to prevent the inclined valve seat 4 from moving randomly, thereby avoiding the problem of the lack of spring elasticity when using a spring. At the same time, by rotating the adjusting device, the slide bar 6 moves left and right along the chute 5, thereby adjusting the tightness of the inclined valve seat 4 clamping the valve ball 3, which is convenient for fixing the valve ball 3.

[0028] Further, the adjusting device includes a gear groove 8 opened on one side of the rack 7, and the bottom surface of the gear groove 8 is rotatably connected with a rotating shaft 9. One end of the rotating shaft 9 penetrates through the side wall of the support seat 2 and is rotatably connected with the support seat 2. And on the side wall of the rotating shaft 9 located on one side of the rack 7, a driving gear 10 is fixedly connected. The driving gear 10 is meshed with the rack 7; by setting the gear groove 8, the rotating shaft 9, the support seat 2, the driving gear 10 and other components to cooperate with each other, when it is necessary to adjust the tightness of the inclined valve seat 4 clamping the valve ball 3, rotate the rotating shaft 9 to drive the driving gear 10 to rotate. Then, the rack 7 meshed with the driving gear 10 will slide along the chute 5 as the driving gear 10 rotates. Because the rack 7 is arranged on one side of the slide bar 6, the inclined valve seat 4 fixedly connected to one end of the slide bar 6 will move left and right, thereby adjusting the tightness of clamping the valve ball 3, which is convenient for fixing the valve ball 3.

[0029] Further, a fixing block 11 is rotatably connected to the side wall of the rotating shaft 9, and the bottom surface of the fixing block 11 is fixedly connected to the side wall of the support seat 2. A set screw hole is opened on the side wall of the fixing block 11, and a fixing set screw 12 is threadedly connected to the inner wall of the set screw hole. One end of the fixing set screw 12 abuts against the side wall of the rotating shaft 9; by setting the fixing block 11, the set screw hole, and the fixing set screw 12 to cooperate with each other, when the fixing set screw 12 is rotated so that one end of the fixing set screw 12 abuts against the side wall of the rotating shaft 9, the rotating shaft 9 can be fixed to prevent the rotating shaft 9 from rotating randomly, resulting in the displacement of the inclined valve seat 4 and being unable to clamp the valve ball 3, affecting the use. And when it is necessary to adjust the tightness, rotate the fixing set screw 12 so that one end of the fixing set screw 12 is separated from the side wall of the rotating shaft 9, and then the rotating shaft 9 can be rotated to adjust the tightness, improving the safety of use.

[0030] Further, a pointing arrow 13 is provided on the upper surface of the fixing block 11; by setting the pointing arrow 13, when the rotating shaft 9 rotates in the arrow direction of the pointing arrow 13, the inclined valve seat 4 can clamp the valve ball 3, and when rotated in the reverse direction, the valve ball 3 can be loosened, which is convenient for the staff to distinguish the rotation direction.

[0031] Further, a sealing groove 17 is formed in the side wall of the inclined valve seat 4 on one side of the support seat 2, and a sealing plate 15 is slidably connected to the side wall of the sealing groove 17. The other end of the sealing plate 15 is fixedly connected to the side wall of the support seat 2. By providing the cooperation of the sealing plate 15 and the sealing groove 17, etc., it is possible to prevent the liquid in the valve body 1 from flowing into the chute 5, resulting in liquid leakage and further corroding the slide bar 6, the rotating shaft 9 and the driving gear 10.

[0032] Further, a sealing gasket 16 is fixedly connected to the bottom surface of the sealing plate 15, and a valve gasket 14 is fixedly connected to the side wall of the inclined valve seat 4. By providing the sealing gasket 16, the sealing performance of the sealing plate 15 is enhanced, and the valve gasket 14 will enhance the sealing performance of the joint surface between the inclined valve seat 4 and the valve ball 3.

[0033] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present invention. Any reference signs in the claims should not be construed as limiting the claimed rights.

[0034] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A ball valve with a pre-adjustable valve seat, comprising a valve body (1), a support seat (2) and a valve ball (3), characterized in that: A beveled valve seat (4) is provided at the connection between the support seat (2) and the valve ball (3), and the side wall of the beveled valve seat (4) abuts against the side wall of the valve ball (3). The side wall of the support seat (2) located on one side of the beveled valve seat (4) is provided with four slide grooves (5), and the inner wall of the slide groove (5) is slidably connected with a slide rod (6), the other end of the slide rod (6) abuts against the side wall of the valve ball (3), and the side wall of one of the slide rods (6) is provided with a rack (7), and an adjustment device is provided on one side of the rack (7), and the adjustment device includes a gear groove (8) provided on one side of the rack (7), and the bottom surface of the gear groove (8) is rotatably connected with a rotating shaft (9), one end of the rotating shaft (9) passes through the side wall of the support seat (2) and is rotatably connected to the support seat (2), and the side wall of the rotating shaft (9) located on one side of the rack (7) is fixedly connected with a driving gear (10), and the driving gear (10) is meshed with the rack (7).

2. A ball valve with a pre-adjustable valve seat according to claim 1, characterized in that: The side wall of the rotating shaft (9) is rotatably connected to a fixed block (11), and the bottom surface of the fixed block (11) is fixedly connected to the side wall of the support seat (2). The side wall of the fixed block (11) is provided with a top screw hole, and the inner wall of the top screw hole is threadedly connected to a fixed top screw (12), and one end of the fixed top screw (12) is against the side wall of the rotating shaft (9).

3. A ball valve with a pre-adjustable valve seat according to claim 2, characterized in that: A directional arrow (13) is provided on the upper surface of the fixing block (11).

4. A ball valve with a pre-adjustable valve seat according to claim 1, characterized in that: A sealing groove (17) is provided on the side wall of the inclined valve seat (4) located on one side of the support seat (2), and a sealing plate (15) is slidably connected to the side wall of the sealing groove (17), and the other end of the sealing plate (15) is fixedly connected to the side wall of the support seat (2).

5. A ball valve with a pre-adjustable valve seat according to claim 4, characterized in that: The bottom surface of the sealing plate (15) is fixedly connected to a sealing pad (16), and the side wall of the inclined valve seat (4) is fixedly connected to a valve pad (14).

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