Sealing gate valve with guide mechanism

Abstract

The utility model relates to the field of gate valves, in particular to a sealing gate valve with a guide mechanism, which comprises a valve body, one side of the valve body is provided with a fixedly connected first connecting pipe, the first connecting pipe is communicated with the inside of the valve body, the other side of the valve body is fixedly provided with a second connecting pipe, and one side of the second connecting pipe is fixedly provided with a mounting ring. A rotary stretching mechanism is further arranged on one side of the second connecting pipe and comprises an upper ring cover and a lower ring cover, a connector is arranged on one side of the mounting ring, a fixedly-connected third connecting pipe is arranged on one side of the connector, a fixedly-connected sleeve is arranged on the outer side of one end of the third connecting pipe, and a slidably-connected fourth connecting pipe is further arranged in the sleeve. The limiting groove is formed in the inner side of the limiting plate, then the symmetrically-distributed limiting sliding blocks are arranged on the two sides of the valve plate, when the valve plate ascends and descends, friction between the limiting plate and the valve plate is replaced with friction between the limiting sliding blocks and the limiting groove, and therefore the service life of the valve plate is prolonged.

Description

Technical Field

[0001] The utility model relates to the field of gate valves, in particular to a sealing gate valve with a guide mechanism. Background Art

[0002] The gate valve is a gate plate of an opening and closing part. The movement direction of the gate plate is perpendicular to the direction of the fluid. The gate valve can only be fully opened and fully closed, and cannot be adjusted or throttled. The gate valve is sealed by the contact between the valve seat and the gate plate. Usually, the sealing surface will be welded with metal materials to increase wear resistance. The gate plate has a rigid gate plate and an elastic gate plate. According to the difference in the gate plate, the gate valve is divided into a rigid gate valve and an elastic gate valve;

[0003] In the prior art, the valve plate is mostly guided by adding baffles on both sides of the valve plate, so that the baffle can be used to limit the valve plate during the lifting process. However, although the baffle has a limiting guiding effect on the valve plate when the valve plate is lifted, after long-term use, the friction between the valve plate and the baffle will gradually cause damage to the valve plate, thereby reducing the sealing of the valve plate. In addition, the inlet and outlet ends of conventional gate valves are mostly fixed designs. When encountering two pipes in different positions being connected, two elbows are required to correct the direction of one of the pipes before installation, which makes the practicality of conventional gate valves low.

[0004] In view of the above technical defects, a solution is now proposed. Utility Model Content

[0005] The purpose of the utility model is to provide a sealing gate valve with a guide mechanism to solve the above-mentioned technical defects.

[0006] The purpose of the utility model can be achieved through the following technical solutions:

[0007] A sealing gate valve with a guide mechanism comprises a valve body, one side of the valve body is provided with a first connecting pipe fixedly connected, the first connecting pipe is communicated with the interior of the valve body, the other side of the valve body is fixedly provided with a second connecting pipe, one side of the second connecting pipe is fixedly provided with a mounting ring;

[0008] A rotating stretching mechanism is also provided on one side of the second connecting tube, and the rotating stretching mechanism includes an upper ring cover and a lower ring cover. A connecting head is provided on one side of the mounting ring, and a fixedly connected third connecting tube is provided on one side of the connecting head. A fixedly connected sleeve is provided on the outer side of one end of the third connecting tube, and a slidingly connected fourth connecting tube is also provided inside the sleeve.

[0009] Preferably, the second connecting pipe is connected to the interior of the valve body, and symmetrically distributed limit plates are provided at both ends of the inner wall of the valve body. The limit plates are fixedly connected to the valve body, and limit grooves are provided on adjacent sides of the limit plates. A first semicircular groove is provided on one side of the mounting ring, and a second semicircular groove is provided on the other side of the mounting ring.

[0010] Preferably, a cover body is fixedly provided on the top of the valve body by bolts, a rotatably connected handwheel is provided on the top of the cover body, a fixedly connected valve stem is provided inside the handwheel, a slidably fitted valve plate is provided between the limit plates, symmetrically distributed limit sliders are provided on both sides of the valve plate, the limit sliders are located in the limit grooves and are slidably connected to the limit grooves, a fixedly connected hollow threaded cylinder is provided inside the valve plate, and the hollow threaded cylinder is threadedly connected to the valve stem.

[0011] Preferably, the upper ring cover and the lower ring cover are located on the outside of the second connecting pipe, the upper ring cover and the lower ring cover are fixedly connected by bolts, and a first sealing ring is placed inside the upper ring cover and the lower ring cover, and the first sealing ring is also located in the first semicircular groove.

[0012] Preferably, a second sealing ring is placed on one side of the interior of the connector, and the second sealing ring is also located in the second semicircular groove, and the upper ring cover, the lower ring cover and the connector are fixed by bolts.

[0013] Preferably, the interior of the sleeve is provided with symmetrically distributed slide grooves, two third sealing rings are also placed inside the sleeve, fixedly connected protrusions are provided on both sides of one end of the fourth connecting tube, the protrusions are located in the slide grooves and are slidably connected to the slide grooves, two fourth sealing rings distributed in an array are also placed inside the fourth connecting tube, and the other end of the fourth connecting tube is provided with a fixedly connected flange.

[0014] The beneficial effects of the utility model are as follows:

[0015] The utility model provides a limiting groove on the inner side of the limiting plate, and then symmetrically distributed limiting sliders are provided on both sides of the valve plate, so that when the valve plate is lifted or lowered, the friction between the limiting slider and the limiting groove replaces the friction between the limiting plate and the valve plate, thereby improving the service life of the valve plate, and the device fixes the flange at one end of the first connecting pipe with the flange at one end of the water pipe by bolts, and then rotates the rotary stretching mechanism so that one end of the flange is aligned with the direction of the other water pipe, and at this time, the flange is pulled until the flange coincides with the flange of the other water pipe, and then the flange is fixed to the flange of the other water pipe by bolts, so that the device can be connected to two relatively different heights of water pipes, thereby improving the practicality of the utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The utility model is further described below in conjunction with the accompanying drawings;

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the connection structure between the valve stem and the valve plate in the embodiment of the utility model;

[0019] Figure 3 It is a schematic diagram of the connection structure of the valve body in the utility model;

[0020] Figure 4 It is a schematic diagram of the cross-sectional structure of the valve body in the utility model;

[0021] Figure 5 It is a schematic cross-sectional view of the overall structure of the rotary stretching mechanism in the utility model;

[0022] Figure 6 It is a schematic diagram of the connection structure between the lower ring cover and the connector in the utility model;

[0023] Figure 7 It is a schematic diagram of the connection structure of the fourth connecting pipe in the utility model.

[0024] Legend: 1. Valve body; 11. First connecting pipe; 12. Second connecting pipe; 13. Mounting ring; 14. Limit plate; 15. Limit groove; 16. First semicircular groove; 17. Second semicircular groove; 18. Cover body; 19. Hand wheel; 20. Valve stem; 21. Valve plate; 22. Limit slider; 23. Hollow threaded cylinder; 3. Rotary stretching mechanism; 31. Upper ring cover; 32. Lower ring cover; 33. First sealing ring; 34. Second sealing ring; 35. Connector; 36. Third connecting pipe; 37. Sleeve; 371. Slide groove; 38. Third sealing ring; 39. Fourth connecting pipe; 40. Flange; 41. Fourth sealing ring; 42. Bump. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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.

[0026] See also Figure 1-Figure 7As shown, the utility model is a sealing gate valve with a guiding mechanism, comprising a valve body 1, a first connecting pipe 11 is fixedly connected to one side of the valve body 1, the first connecting pipe 11 is communicated with the interior of the valve body 1, a second connecting pipe 12 is fixedly provided on the other side of the valve body 1, a mounting ring 13 is fixedly provided on one side of the second connecting pipe 12, the second connecting pipe 12 is communicated with the interior of the valve body 1, symmetrically distributed limiting plates 14 are provided at both ends of the inner wall of the valve body 1, the limiting plates 14 are fixedly connected to the valve body 1, limiting grooves 15 are provided on the adjacent sides of the limiting plates 14, a first semicircular groove 16 is provided on one side of the mounting ring 13, and a second semicircular groove 17 is provided on the other side of the mounting ring 13.

[0027] A cover body 18 is fixed on the top of the valve body 1 by bolts, a rotatably connected hand wheel 19 is provided on the top of the cover body 18, a fixedly connected valve stem 20 is provided inside the hand wheel 19, a slidably fitted valve plate 21 is provided between the limit plates 14, symmetrically distributed limit sliders 22 are provided on both sides of the valve plate 21, and the limit sliders 22 are located in the limit groove 15 and slidably connected to the limit groove 15.

[0028] A fixedly connected hollow threaded cylinder 23 is also provided inside the valve plate 21, and the hollow threaded cylinder 23 is threadedly connected to the valve stem 20. When the hand wheel 19 is turned, the hand wheel 19 drives the valve stem 20 to rotate, and the valve stem 20 is threadedly connected to the hollow threaded cylinder 23, thereby driving the hollow threaded cylinder 23 to move up and down. At this time, the limit slider 22 slides with the limit groove 15 to reduce the wear between the valve plate 21 and the inner wall of the valve body 1.

[0029] A rotating stretching mechanism 3 is also provided on one side of the second connecting tube 12, and the rotating stretching mechanism 3 includes an upper ring cover 31 and a lower ring cover 32. The upper ring cover 31 and the lower ring cover 32 are located on the outside of the second connecting tube 12, and the upper ring cover 31 and the lower ring cover 32 are fixedly connected by bolts. A first sealing ring 33 is placed inside the lower ring cover 32, and the first sealing ring 33 is also located in the first semicircular groove 16.

[0030] A connector 35 is provided on one side of the mounting ring 13, and a second sealing ring 34 is placed on one side of the inner side of the connector 35. The second sealing ring 34 is also located in the second semicircular groove 17. The upper ring cover 31, the lower ring cover 32 and the connector 35 are fixed by bolts. The first sealing ring 33 and the second sealing ring 34 are used to enhance the sealing performance when the device is connected.

[0031] A third connecting pipe 36 is fixedly connected to one side of the connector 35 , a sleeve 37 is fixedly connected to one end of the third connecting pipe 36 , symmetrically distributed sliding grooves 371 are provided inside the sleeve 37 , and two third sealing rings 38 are placed inside the sleeve 37 .

[0032] A fourth connecting tube 39 is also provided inside the sleeve 37 in a sliding connection. Fixedly connected protrusions 42 are provided on both sides of one end of the fourth connecting tube 39. The protrusions 42 are located in the slide groove 371 and are slidingly connected to the slide groove 371. Two fourth sealing rings 41 distributed in an array are also placed inside the fourth connecting tube 39. The third sealing ring 38 and the fourth sealing ring 41 are used to improve the sealing performance of the sleeve 37 and the fourth connecting tube 39 during movement. A fixedly connected flange 40 is provided at the other end of the fourth connecting tube 39.

[0033] The working process and principle of the utility model are as follows:

[0034] When in use, firstly, the flange at one end of the first connecting pipe 11 is fixedly connected with the flange at one end of the water pipe by bolts, and then the rotating stretching mechanism 3 is rotated so that one end of the flange 40 is aligned with the direction of the other water pipe, and then the flange 40 is pulled until the flange 40 coincides with the flange of the other water pipe, and then the flange 40 is fixed with the flange of the other water pipe by bolts, thereby completing the installation of the device;

[0035] When the first sealing ring 33 and the second sealing ring 34 between the mounting ring 13 and the rotating stretching mechanism 3 are aging and leaking, first turn the hand wheel 19 to close the valve, then remove the bolts between the connector 35 and the upper ring cover 31 and the lower ring cover 32 to replace the second sealing ring 34, and remove the bolts between the upper ring cover 31 and the lower ring cover 32 to replace the first sealing ring 33.

[0036] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0037] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is only limited by the claims and their full scope and equivalents.

Claims

1. A sealing gate valve with a guide mechanism, comprising a valve body (1), characterized in that: A first connecting pipe (11) is fixedly connected to one side of the valve body (1), the first connecting pipe (11) is communicated with the interior of the valve body (1), a second connecting pipe (12) is fixedly provided on the other side of the valve body (1), and a mounting ring (13) is fixedly provided on one side of the second connecting pipe (12); A rotating stretching mechanism (3) is also provided on one side of the second connecting tube (12), and the rotating stretching mechanism (3) comprises an upper ring cover (31) and a lower ring cover (32). A connecting head (35) is provided on one side of the mounting ring (13), and a third connecting tube (36) is fixedly connected on one side of the connecting head (35). A sleeve (37) is fixedly connected on the outer side of one end of the third connecting tube (36), and a fourth connecting tube (39) is slidably connected inside the sleeve (37).

2. A sealing gate valve with a guide mechanism according to claim 1, characterized in that: The second connecting pipe (12) is connected to the interior of the valve body (1), and symmetrically distributed limit plates (14) are provided at both ends of the inner wall of the valve body (1). The limit plates (14) are fixedly connected to the valve body (1), and a limit groove (15) is provided on one side adjacent to the limit plate (14). A first semicircular groove (16) is provided on one side of the mounting ring (13), and a second semicircular groove (17) is provided on the other side of the mounting ring (13).

3. A sealing gate valve with a guide mechanism according to claim 2, characterized in that: A cover body (18) is fixedly provided on the top of the valve body (1) by means of bolts, a rotatably connected hand wheel (19) is provided on the top of the cover body (18), a fixedly connected valve stem (20) is provided inside the hand wheel (19), a slidably matched valve plate (21) is provided between the limit plates (14), symmetrically distributed limit sliders (22) are provided on both sides of the valve plate (21), the limit sliders (22) are located in the limit groove (15) and are slidably connected to the limit groove (15), a fixedly connected hollow threaded cylinder (23) is provided inside the valve plate (21), and the hollow threaded cylinder (23) is threadedly connected to the valve stem (20).

4. A sealing gate valve with a guide mechanism according to claim 1, characterized in that: The upper ring cover (31) and the lower ring cover (32) are located on the outside of the second connecting pipe (12), and the upper ring cover (31) and the lower ring cover (32) are fixedly connected by bolts. A first sealing ring (33) is placed inside the lower ring cover (32), and the first sealing ring (33) is also located in the first semicircular groove (16).

5. A sealing gate valve with a guide mechanism according to claim 1, characterized in that: A second sealing ring (34) is placed on one side of the interior of the connecting head (35), and the second sealing ring (34) is also located in the second semicircular groove (17). The upper ring cover (31), the lower ring cover (32) and the connecting head (35) are fixed by bolts.

6. A sealing gate valve with a guide mechanism according to claim 1, characterized in that: The sleeve (37) is provided with symmetrically distributed slide grooves (371) inside, and two third sealing rings (38) are also placed inside the sleeve (37). Fixedly connected protrusions (42) are provided on both sides of one end of the fourth connecting pipe (39). The protrusions (42) are located in the slide grooves (371) and are slidably connected to the slide grooves (371). Two fourth sealing rings (41) distributed in an array are also placed inside the fourth connecting pipe (39), and a fixedly connected flange (40) is provided at the other end of the fourth connecting pipe (39).

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