Plug valve capable of guiding valve element to move

Abstract

The utility model discloses a plug valve capable of guiding and moving a valve core, which belongs to the technical field of valves and comprises a valve body, connecting ports are arranged on two sides of the valve body, a supporting seat is integrally formed at the top end of the valve body and is in threaded connection with a supporting cover, a moving structure is arranged in an inner cavity of the supporting cover, and the moving structure is in threaded connection with the supporting cover. The bottom end of the moving structure penetrates through the supporting base and is provided with a valve element body, an adjusting box is arranged at the bottom end of the valve element body, a rotating disc is arranged at the bottom end of the adjusting box, a rotating rod is fixedly connected to the inner side wall of the rotating disc, and the rotating rod is rotationally connected with the adjusting box through a rotating shaft. And the other end of the rotating rod penetrates through the adjusting box and is fixedly connected with a rotating assembly, a connecting rod is arranged at the top end of the rotating assembly, and the top end of the connecting rod penetrates through the valve body and is fixedly connected with the bottom end of the valve element body, so that the flow adjusting range of the plug valve is widened, and the flow adjusting precision of the plug valve is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a plug valve capable of guiding the movement of a valve core. Background Technique

[0002] A plug valve is a rotary valve with a closing member or a plunger shape. By rotating 90 degrees, the passage opening on the valve plug communicates or separates from the passage opening on the valve body to achieve opening or closing of a valve. The shape of its valve plug can be cylindrical or conical.

[0003] For a plug valve, usually, the internal valve core is adjusted by rotating a handle. By adjusting the direction of the valve core, the plug valve is opened and closed, and by adjusting the angle of the internal valve core, the flow rate is adjusted. Since the valve core cannot move, the position of the flow holes on the valve core cannot be adjusted, resulting in a small flow rate adjustment range of the plug valve and reducing the accuracy of the flow rate adjustment of the plug valve.

[0004] According to a plug valve provided by the publication number: CN209876120U, the key points of its technical solution include a plug valve, which includes a valve body, a plug arranged in the valve body, a valve stem, and a handle linked to the valve stem. The handle further includes a hinge part and a rotating handle that can be turned up and down relative to the handle. The rotating handle includes a rotating part arranged at one end of the rotating handle. The rotating part is set to be circular and eccentrically hinged to the hinge part. The end face of the valve body facing the handle is provided with a plurality of columnar protrusions along the circumferential direction. A contact block is sleeved on each columnar protrusion. The outer surface of the contact block is set to be arc-shaped and made of rubber material. The utility model can avoid the situation that the handle is accidentally touched and deflected, and at the same time saves space.

[0005] According to the above-introduced plug valve, since the valve core cannot move, the position of the flow holes on the valve core cannot be adjusted, resulting in a small flow rate adjustment range of the plug valve and reducing the accuracy of the flow rate adjustment of the plug valve. Therefore, we need to propose a plug valve capable of guiding the movement of the valve core. Summary of the Utility Model

[0006] The purpose of the utility model is to provide a plug valve capable of guiding the movement of the valve core. Through the setting of a rotating component, the rotating disc drives the rotating component to rotate through a rotating rod, so that the rotating component drives the valve core body to rotate through a connecting rod, changing the direction of the valve core body. Then, the rotating and moving structure drives the valve core body to move up and down. By adjusting the position of the valve core body in the inner cavity of the valve body, the position of the flow holes on the valve core is adjusted, thereby increasing the flow rate adjustment range of the plug valve and improving the accuracy of the flow rate adjustment of the plug valve to solve the problems raised in the above background technique.

[0007] To achieve the above object, the present utility model provides the following technical solutions: A plug valve capable of guiding the movement of the valve core, including a valve body, both sides of the valve body are provided with connection ports, the top of the valve body is integrally formed with a support seat, the outer surface of the support seat is provided with threads, the support seat is threadedly connected with a support cover, the inner cavity of the support cover is provided with a moving structure for driving the valve core to move, the bottom end of the moving structure penetrates through the support seat and is provided with a valve core body, the bottom end of the valve body is provided with an adjustment box, the bottom end of the adjustment box is provided with a turntable, the inner side wall of the turntable is fixedly connected with a rotating rod, the rotating rod is rotationally connected with the adjustment box through a rotating shaft, the other end of the rotating rod penetrates through the adjustment box and is fixedly connected with a rotating component for driving the valve core to rotate, the top end of the rotating component is provided with a connecting rod, and the top end of the connecting rod penetrates through the valve body and is fixedly connected with the bottom end of the valve core body.

[0008] Preferably, the moving structure includes a threaded sleeve, the threaded sleeve is inserted and fixed at the top end of the support cover, the bottom end of the threaded sleeve extends into the inner cavity of the threaded cover, a screw rod is threadedly connected in the inner cavity of the threaded sleeve, the top end of the screw rod is fixedly connected with a rocker, and the bottom end of the screw rod is rotationally connected with the top end of the valve core body through a rotating shaft.

[0009] Preferably, a rubber sleeve is bonded to the outer surface of the rocker, and anti-slip protrusions are provided on the outer surface of the rubber sleeve, and a plurality of groups of anti-slip protrusions are provided.

[0010] Preferably, the rotating component includes a first gear, the bottom end of the first gear is key-connected to the top end of the rotating rod, the outer surface of the first gear is meshed with a second gear, and the top end of the second gear is key-connected to the bottom end of the connecting rod.

[0011] Preferably, the shapes of the first gear and the second gear are both conical, and the angle formed by the combination of the first gear and the second gear is 90 degrees.

[0012] Preferably, a movable sleeve is inserted and fixed on the surface of the turntable, a movable rod is inserted and slid in the inner cavity of the movable sleeve, a positioning hole is opened on the lower surface of the adjustment box, and the movable rod is cooperatively clamped with the inner cavity of the positioning hole.

[0013] Preferably, a limiting block is fixedly connected to one end of the movable rod close to the adjustment box, and a spring is sleeved on the outer surface of the movable rod, and the spring is located between the limiting block and the turntable.

[0014] Compared with the prior art, the beneficial effects of the present utility model are:

[0015] The utility model provides a cock valve capable of guiding the movement of a valve core. Through the arrangement of a rotating assembly, rotating a turntable drives the rotating assembly to rotate through a rotating rod, so that the rotating assembly drives the valve core body to rotate through a connecting rod, changing the direction of the valve core body. Then, a rotating and moving structure drives the valve core body to move up and down, and by adjusting the position of the valve core body in the inner cavity of the valve body, the position of a flow hole on the valve core is adjusted, thereby improving the flow regulation range of the cock valve and enhancing the accuracy of flow regulation of the cock valve.

[0016] Other features and advantages of the utility model will be described in the following specification, and part of them will become obvious from the specification or be understood by implementing the utility model. The objectives and other advantages of the utility model can be achieved and obtained through the structures pointed out in the specification and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of the whole of the utility model;

[0018] Figure 2 is a schematic structural diagram of the utility model seen from below;

[0019] Figure 3 is a schematic structural diagram of the utility model seen from the side;

[0020] Figure 4 is a schematic structural diagram of a partial section of the utility model;

[0021] Figure 5 is Figure 4 a schematic structural diagram of the enlarged structure at A in

[0022] In the figure: 1, valve body; 2, support seat; 3, support cover; 4, moving structure; 41, threaded sleeve; 42, screw rod; 43, rocker; 5, valve core body; 6, adjustment box; 7, turntable; 8, rotating rod; 9, rotating assembly; 91, first gear; 92, second gear; 10, connecting rod; 11, rubber sleeve; 12, movable sleeve; 13, movable rod; 14, positioning hole; 15, limiting block; 16, spring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the utility model with reference to the accompanying drawings in the embodiments of the utility model. Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all of them. Based on the embodiments of the 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 utility model.

[0024] Please refer to Figures 1-5, the present utility model provides a technical solution: a cock valve capable of guiding the movement of a valve core, including a valve body 1. Connecting ports are provided on both sides of the valve body 1. A support seat 2 is integrally formed at the top of the valve body 1. The outer surface of the support seat 2 is provided with threads. A support cover 3 is threadedly connected to the support seat 2. A moving structure 4 for driving the valve core to move is arranged in the inner cavity of the support cover 3. The bottom end of the moving structure 4 penetrates through the support seat 2 and a valve core body 5 is arranged. An adjusting box 6 is arranged at the bottom end of the valve body 1. A turntable 7 is arranged at the bottom end of the adjusting box 6. A rotating rod 8 is fixedly connected to the inner side wall of the turntable 7. The rotating rod 8 is rotatably connected to the adjusting box 6 through a rotating shaft. The other end of the rotating rod 8 penetrates through the adjusting box 6 and is fixedly connected to a rotating assembly 9 for driving the valve core to rotate. The top end of the rotating assembly 9 is provided with a connecting rod 10. The top end of the connecting rod 10 penetrates through the valve body 1 and is fixedly connected to the bottom end of the valve core body 5;

[0025] By rotating the turntable 7, the rotating rod 8 can be driven to rotate, so that the rotating rod 8 drives the rotating assembly 9 to rotate. The rotating assembly 9 drives the valve core body 5 to rotate through the connecting rod 10, and the direction of the valve core body 5 is changed to open or close the cock valve. By adjusting the angle of the valve core body 5, the size of the flow hole on the valve core can be adjusted. Then rotate the moving structure 4, so that the moving structure 4 can drive the valve core body 5 to move up and down in the inner cavity of the valve body 1, and the size of the flow hole on the valve core is adjusted again, thereby improving the flow regulation range of the cock valve and improving the accuracy of the flow regulation of the cock valve.

[0026] The moving structure 4 includes a threaded sleeve 41. The threaded sleeve 41 is inserted and fixed at the top end of the support cover 3. The bottom end of the threaded sleeve 41 extends into the inner cavity of the threaded cover. A screw rod 42 is threadedly connected in the inner cavity of the threaded sleeve 41. The top end of the screw rod 42 is fixedly connected to a rocker 43. The bottom end of the screw rod 42 is rotatably connected to the top end of the valve core body 5 through a rotating shaft. Rotating the rocker 43 drives the screw rod 42 to rotate. Through the threaded connection between the screw rod 42 and the threaded sleeve 41, the screw rod 42 can move up and down when rotating, and the screw rod 42 drives the valve core body 5 at the bottom end to move up and down.

[0027] A rubber sleeve 11 is bonded to the outer surface of the rocker 43. Anti-slip protrusions are arranged on the outer surface of the rubber sleeve 11. There are several groups of anti-slip protrusions. Through the arrangement of the rubber sleeve 11, the friction between the hand of the staff and the rocker 43 is increased. Through the arrangement of the anti-slip protrusions, the anti-slip effect of the rubber sleeve 11 is increased.

[0028] The rotating assembly 9 includes a first gear 91. The bottom end of the first gear 91 is key-connected to the top end of the rotating rod 8. The outer surface of the first gear 91 is meshed with a second gear 92. The top end of the second gear 92 is key-connected to the bottom end of the connecting rod 10. The rotation of the first gear 91 drives the rotation of the second gear 92 through meshing connection, so that the second gear 92 drives the connecting rod 10 at the top to rotate. Through the cooperation of the gears, the accuracy of the spool angle adjustment is improved.

[0029] A movable sleeve 12 is inserted and fixed on the surface of the turntable 7. A movable rod 13 is inserted and slid in the inner cavity of the movable sleeve 12. A positioning hole 14 is opened on the lower surface of the adjustment box 6. The movable rod 13 is engaged and clamped with the inner cavity of the positioning hole 14. Inserting the movable rod 13 into the inner cavity of the positioning hole 14 can fix the position of the turntable 7 after rotation, and improve the stability of the turntable 7 after rotation.

[0030] A limiting block 15 is fixedly connected to one end of the movable rod 13 close to the adjustment box 6. A spring 16 is sleeved on the outer surface of the movable rod 13. The spring 16 is located between the limiting block 15 and the turntable 7. Through the cooperation of the limiting block 15 and the spring 16, the stability of the movable rod 13 in the inner cavity of the positioning hole 14 is improved.

[0031] There are several groups of positioning holes 14. The several groups of positioning holes 14 are distributed on the lower surface of the adjustment box 6 with the turntable 7 as the center. Through the setting of the positioning holes 14, the positioning range of the position of the turntable 7 after rotation is increased.

[0032] During specific use: First, pull down the movable rod 13 to cancel the positioning with the positioning hole 14, then rotate the turntable 7 to drive the rotation of the rotating rod 8, so that the rotating rod 8 drives the rotation of the first gear 91. The first gear 91 drives the rotation of the second gear 92 through meshing connection. The second gear 92 drives the connecting rod 10 at the top to rotate, so that the connecting rod 10 drives the spool body 5 to rotate. By changing the direction of the spool body 5, the opening and closing of the plug valve and the adjustment of the size of the flow port are realized. Then rotate the rocker 43 to drive the rotation of the screw rod 42. The screw rod 42 is thread-connected with the threaded sleeve 41. When the screw rod 42 rotates, it can move up and down. The up and down movement of the screw rod 42 drives the spool body 5 at the bottom to move. By moving the spool body up and down, the size of the flow hole on the spool is further adjusted, thereby improving the flow regulation range of the plug valve and improving the accuracy of the flow regulation of the plug valve.

[0033] 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 cock valve capable of guiding the spool to move, comprising a valve body (1), characterized in that: Both sides of the valve body (1) are provided with connection ports. A support seat (2) is integrally formed at the top of the valve body (1). The outer surface of the support seat (2) is provided with threads. The support seat (2) is threadedly connected with a support cover (3). The inner cavity of the support cover (3) is provided with a moving structure (4) for driving the valve core to move. The bottom end of the moving structure (4) penetrates through the support seat (2) and is provided with a valve core body (5). The bottom end of the valve body (1) is provided with an adjustment box (6). The bottom end of the adjustment box (6) is provided with a turntable (7). The inner side wall of the turntable (7) is fixedly connected with a rotating rod (8). The rotating rod (8) is rotationally connected with the adjustment box (6) through a rotating shaft. The other end of the rotating rod (8) penetrates through the adjustment box (6) and is fixedly connected with a rotating assembly (9) for driving the valve core to rotate. The top end of the rotating assembly (9) is provided with a connecting rod (10). The top end of the connecting rod (10) penetrates through the valve body (1) and is fixedly connected with the bottom end of the valve core body (5).

2. The cock valve capable of guiding the spool to move according to claim 1, characterized in that: The moving structure (4) includes a threaded sleeve (41). The threaded sleeve (41) is inserted and fixed at the top end of the support cover (3). The bottom end of the threaded sleeve (41) extends into the inner cavity of the threaded cover. A screw rod (42) is threadedly connected in the inner cavity of the threaded sleeve (41). The top end of the screw rod (42) is fixedly connected with a rocker (43). The bottom end of the screw rod (42) is rotationally connected with the top end of the valve core body (5) through a rotating shaft.

3. The cock valve capable of guiding the spool to move according to claim 2, wherein: A rubber sleeve (11) is adhesively bonded to the outer surface of the rocker (43). Anti-slip protrusions are arranged on the outer surface of the rubber sleeve (11). There are several groups of the anti-slip protrusions.

4. A plug valve capable of guiding the spool to move according to claim 1, characterized in that: The rotating assembly (9) includes a first gear (91). The bottom end of the first gear (91) is key-connected to the top end of the rotating rod (8). A second gear (92) is meshed with the outer surface of the first gear (91). The top end of the second gear (92) is key-connected to the bottom end of the connecting rod (10).

5. A plug valve capable of guiding the movement of the valve core according to claim 1, characterized in that: A movable sleeve (12) is inserted and fixed on the surface of the turntable (7). A movable rod (13) is inserted and slid in the inner cavity of the movable sleeve (12). A positioning hole (14) is formed on the lower surface of the adjustment box (6). The movable rod (13) is cooperatively clamped with the inner cavity of the positioning hole (14).

6. The cock valve capable of guiding the spool to move according to claim 5, characterized in that: A limiting block (15) is fixedly connected to one end of the movable rod (13) close to the adjustment box (6). A spring (16) is sleeved on the outer surface of the movable rod (13). The spring (16) is located between the limiting block (15) and the turntable (7).

7. A cock valve capable of guiding the spool to move according to claim 5, characterized in that: There are several groups of the positioning holes (14). The several groups of positioning holes (14) are distributed on the lower surface of the adjustment box (6) with the turntable (7) as the center.

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