Soft sealing gate valve

Abstract

The utility model discloses a soft sealing gate valve which comprises a valve body and a valve rod installed on the valve body. A connecting part is arranged at the upper end of the valve rod, the connecting part is movably connected with an arranged connecting piece, and the outer part of the connecting piece is connected with an arranged driving wheel; the connecting piece comprises a shell, a protruding part is arranged on the outer wall face of the shell, and a connecting hole is further formed in the shell. The connecting hole is connected with a connecting part arranged at the upper end of the valve rod in a matched mode. When the connecting part is sleeved with the connecting piece, the valve rod is driven to rotate through rotation of the driving wheel. Due to the fact that the driving wheel is movably connected with the connecting piece, and the connecting piece is movably connected with the valve rod, the driving wheel and the connecting piece can be disassembled, the problem that in the prior art, after the driving wheel is broken in the rotating process, a user cannot open the valve smoothly is solved, and the valve has the advantages of being simple in structure, convenient to disassemble, low in cost and the like. And smooth opening and closing of the valve are facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a soft-sealed gate valve. Background Art

[0002] Soft-sealed gate valve is a commonly used valve type, which uses elastic materials as sealing elements, such as rubber or polymer, to achieve a good sealing effect. Compared with traditional metal-sealed gate valves, soft-sealed gate valves have better sealing performance and corrosion resistance.

[0003] For example, the valve with patent number CN117307740A, in actual use, when the temperature of the weather or the medium rises, the gate and the valve seat are easily stuck due to the thermal expansion of the gate and the valve seat, and after long-term use, the valve stem rusts, which increases the difficulty of opening the valve; at this time, in the process of opening the valve, the driving wheel needs to be rotated forcefully, but the driving wheel is usually made of cast iron, so it is very easy to break when applying force. Once the driving wheel breaks, the driving wheel remaining on the valve stem can not only fail to open the valve, but also interfere with the use of other tools. Utility Model Content

[0004] The purpose of the utility model is to provide a soft-sealed gate valve to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a soft-sealed gate valve, comprising a valve body, a valve stem installed on the valve body, a stuffing seat being further provided on the valve body, a stuffing being provided in the stuffing seat, and the stuffing being fixed in the stuffing seat by a pressure cover; a connecting portion being provided at the upper end of the valve stem; wherein the connecting portion is movably connected to a connecting piece provided, and the outside of the connecting piece is movably connected to a driving wheel provided; the connecting piece comprises a shell, and a connecting hole is further provided inside the shell; a protrusion is further provided on the outer wall surface of the shell, and the protrusion is adaptively connected to a groove provided in the driving wheel so that the connecting piece follows the driving wheel in linkage.

[0006] As a preferred technical solution of the utility model: an internal threaded hole is further provided at the upper end of the connecting portion, and the driving wheel is fixed to the valve stem by passing a first bolt through a gasket and the driving wheel.

[0007] As a preferred technical solution of the utility model: a supporting plate for supporting the connecting member is also provided on the valve stem, and the supporting plate is located directly below the connecting portion.

[0008] As a preferred technical solution of the utility model: an elastic member is further provided between the gland and the filler, and the filler is urged to fill the filler seat through the elastic member.

[0009] As a preferred technical solution of the utility model: the elastic member is a spring, and the gland is also provided with a second bolt, and the second bolt passes through the gland and is connected to the packing seat to press the elastic member into the packing seat.

[0010] As a preferred technical solution of the present utility model: the cross section of the connecting hole is a polygon, and the connecting portion is a polygonal column.

[0011] By adopting the above technical scheme, the beneficial effect of the utility model is as follows: when the connecting piece is put on the connecting part, the rotation of the driving wheel is then utilized to cause the valve stem to rotate; since the driving wheel and the connecting piece as well as the connecting piece and the valve stem are all movably connected, the driving wheel and the connecting piece can be disassembled to solve the problem in the prior art that it is difficult for the user to smoothly open the valve after the driving wheel breaks during rotation. Based on this, the utility model has a simple structure and is easy to disassemble, which means that the broken driving wheel and the connecting piece can be disassembled, thereby facilitating the smooth opening and closing of the valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is an exploded schematic diagram of the main structure of the utility model;

[0013] Figure 2 This is a schematic diagram of the exploded structure of the valve body and valve stem of the utility model;

[0014] Figure 3 for Figure 2 A local enlarged schematic diagram of the middle A;

[0015] Figure 4 This is a schematic diagram of the main structure of the connector of the utility model;

[0016] Figure 5 It is a schematic structural diagram of the driving wheel of the utility model when viewed from above.

[0017] In the figure: 1. valve body; 2. valve stem; 3. connecting part; 4. driving wheel; 5. first bolt; 6. gasket; 7. gland; 8. elastic part; 9. packing; 10. packing seat; 11. connecting part; 12. internal threaded hole; 13. protrusion; 14. connecting hole; 15. housing; 16. groove; 17. supporting plate; 18. second bolt. DETAILED DESCRIPTION

[0018] Embodiments of the present utility model are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present utility model, and should not be construed as limitations on the present utility model. In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "upper surface", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the present utility model.

[0019] See also Figure 1-5 The utility model provides an embodiment: a soft-sealed gate valve, comprising a valve body 1, a valve stem 2 installed on the valve body 1, a packing seat 10 is also provided on the valve body 1, a packing 9 is provided in the packing seat 10, and the packing 9 is fixed in the packing seat 10 by a pressure cover 7; a connecting portion 11 is provided at the upper end of the valve stem 2; wherein the connecting portion 11 is movably connected with a connecting member 3, and the outside of the connecting member 3 is movably connected with a driving wheel 4; the connecting member 3 comprises a shell 15, and a connecting hole 14 is also provided inside the shell 15; a protrusion 13 is also provided on the outer wall surface of the shell 15, and the protrusion 13 is adaptively connected with a groove 16 provided in the driving wheel 4, so that the connecting member 3 follows the driving wheel 4 in linkage.

[0020] In summary, when the connector 3 is sleeved on the connector 11, the drive wheel 4 is sleeved on the outside of the connector 3; then the rotation of the drive wheel 4 is used to cause the valve stem 2 to rotate; at this time, the valve can be opened and closed. Since the groove 16 cooperates with the protrusion 13, the power of the drive wheel 4 can be reliably and stably transmitted to the valve stem 2. In particular, the protrusion 13 and the groove 16 slide together, which not only facilitates the disassembly of the drive wheel 4, but also improves the linkage efficiency of the drive wheel 4 and the valve stem 2 after the protrusion 13 contacts the groove 16, thereby solving the problem of poor valve opening caused by idling of the drive wheel 4.

[0021] Furthermore, since the driving wheel 4 and the connecting member 3 as well as the connecting member 3 and the valve stem 2 are all movably connected, the driving wheel 4 and the connecting member 3 can be disassembled to solve the problem in the prior art that it is difficult for the user to successfully open the valve after the driving wheel breaks during rotation.

[0022] Based on this, the utility model has a simple structure and is easy to disassemble, that is, it is easy to disassemble the broken driving wheel and the connecting piece, thereby facilitating the smooth opening and closing of the valve.

[0023] In addition, since an internal threaded hole 12 is also provided at the upper end of the connecting portion 11, and the driving wheel 4 is fixed to the valve stem 2 by passing the provided gasket 6 and the driving wheel 4 through the provided first bolt 5, the driving wheel 4 can be further fixed to the valve stem 2 to avoid the driving wheel 4 from falling off or the unbalanced force during rotation, which causes one end to tilt or fall off the valve stem 2; at the same time, when the valve is working, the driving wheel 4 can also be removed by disassembling the first bolt 5 to avoid the problem of damage to the driving wheel 4 due to impact during use, and disassembling the driving wheel 4 can release the space above the valve.

[0024] Furthermore, since the valve stem 2 is also provided with a supporting plate 17 for supporting the connecting member 3, and the supporting plate 17 is located directly below the connecting portion 11, the supporting plate 17 can be used to support the connecting member 3 to ensure the stability of the position of the connecting member 3 on the valve stem 2, and can also support the driving wheel 4.

[0025] On the basis of the above scheme, since an elastic member 8 is further provided between the gland 7 and the filler 9, and the elastic member 8 is used to urge the filler 9 to fill the filler seat 10, the elastic force of the elastic member 8 can be used to urge the filler 9 to completely fill the filler 10 tightly to avoid gaps.

[0026] Specifically, since the elastic member 8 is a spring, and the gland 7 is further provided with a second bolt 18, and the second bolt 18 passes through the gland 7 and is connected to the packing seat 10 to press the elastic member 8 into the packing seat 10. Therefore, the gland 7 can be used to force the packing 9 to always be stretched in the packing seat 10, so as to improve the sealing effect in the packing seat 10.

[0027] In addition, since the cross section of the connecting hole 14 is polygonal and the connecting portion 11 is a polygonal column, the power between the connecting member 3 and the valve stem 2 can be reliably transmitted, and the polygonal connecting hole 14 and the polygonal column connecting portion 11 are convenient for mutual cooperation and also convenient for removing the connecting member 3 from the connecting portion 11;

[0028] Furthermore, since the driving wheel 4 can be removed from the connecting member 3, it is convenient for a caliper or other wrench that can be clamped on the protrusion 13 to cause the valve stem 2 to rotate. At the same time, since the end of the connecting portion 11 is in the shape of a polygonal column, when the connecting member 3 is removed, it is convenient for an external wrench to be connected to it, thereby providing more ways to open or close the valve, so that the user can smoothly open and close the valve.

[0029] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions and variations of these embodiments are made without departing from the principles and spirit of the present invention, and still fall within the scope of protection of the present invention.

Claims

1. A soft-sealed gate valve, characterized in that: It comprises a valve body (1), a valve stem (2) mounted on the valve body (1), a packing seat (10) being provided on the valve body (1), a packing (9) being provided in the packing seat (10), and the packing (9) being fixed in the packing seat (10) by a gland (7); A connecting portion (11) is provided at the upper end of the valve stem (2); wherein the connecting portion (11) is movably connected to a connecting member (3), and the exterior of the connecting member (3) is movably connected to a driving wheel (4); The connecting member (3) comprises a shell (15), and a connecting hole (14) is also provided inside the shell (15); A protrusion (13) is also provided on the outer wall surface of the shell (15), and the protrusion (13) is adapted to be connected with a groove (16) provided in the driving wheel (4), so that the connecting member (3) follows the driving wheel (4) in linkage.

2. A soft-sealed gate valve according to claim 1, characterized in that: An internal threaded hole (12) is also provided at the upper end of the connecting portion (11), and the driving wheel (4) is fixed to the valve stem (2) by passing a first bolt (5) through a gasket (6) and the driving wheel (4).

3. A soft-sealed gate valve according to claim 2, characterized in that: The valve stem (2) is also provided with a supporting plate (17) for supporting the connecting member (3), and the supporting plate (17) is located directly below the connecting portion (11).

4. A soft-sealed gate valve according to claim 1, 2 or 3, characterized in that: An elastic member (8) is also provided between the pressure cover (7) and the filler (9), and the elastic member (8) causes the filler (9) to fill the filler seat (10).

5. A soft-sealed gate valve according to claim 4, characterized in that: The elastic member (8) is a spring, and a second bolt (18) is also provided on the gland (7). The second bolt (18) passes through the gland (7) and is connected to the packing seat (10) to press the elastic member (8) into the packing seat (10).

6. A soft-sealed gate valve according to claim 5, characterized in that: The cross section of the connecting hole (14) is polygonal, and the connecting portion (11) is a polygonal column.

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