Anti-static valve

Abstract

The anti-static valve comprises a valve body and a valve rod, the valve rod is arranged in the valve body, an operation knob is arranged outside the top end of the valve rod, an anti-static assembly is arranged in the middle of the valve rod and connected with the valve rod through an installation mechanism, and fixing mechanisms are arranged at the two ends of the valve body. The installation mechanism is matched with the anti-static assembly, static electricity generated by friction in the valve body can be conveniently guided out through the anti-static assembly in the using process, safety in the using process is ensured, meanwhile, the installation mechanism can conveniently install and fix the anti-static assembly, the anti-static effect is ensured, and the service life of the anti-static valve is prolonged. And the valve body, the pipeline and the like can be conveniently connected and assembled through the arranged fixing mechanism, connection and use are convenient, meanwhile, the sealing performance after connection is ensured, the situations of leakage and the like are avoided, and use safety is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to valve equipment technical field, concretely is a kind of anti-static valve. BACKGROUND

[0002] Valve is the control component in gas or liquid conveying system, is used to control the device of the direction, pressure, flow of filling medium. When valve is conveying high temperature and high pressure flammable medium, it is easy to produce static electricity and produce spark, there is security accident hidden danger, therefore anti-static performance is important guarantee for stable operation of valve.

[0003] And existing valve anti-static has certain defect in actual use, part is to stably conduct static electricity on valve stem to valve body, existing anti-static valve is usually punched a hole on valve stem, installs anti-static device in hole, completes static electricity conduction, if simply plug-in, in long time use, it can appear abutment not closely, so that anti-static effect weakens, if stably plug-in, it is inconvenient to carry out dismounting operation when subsequent fault or damage occurs. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a kind of anti-static valve to solve the problems raised in the above background.

[0005] To achieve the above object, the utility model provides the following technical scheme: an anti-static valve, including valve body and valve stem, valve stem is arranged in the valve body, the operating knob is arranged at the top of valve stem, the anti-static assembly is arranged in the middle of valve stem, the anti-static assembly is connected with valve stem by mounting mechanism, and the fixing mechanism is arranged at both ends of valve body.

[0006] Preferably, to facilitate the conduction of static electricity generated by friction, ensure safety, the anti-static assembly includes a plug-in hole formed in the middle of the valve stem, and a grounding device is inserted into the plug-in hole.

[0007] Preferably, to facilitate the installation of the anti-static assembly, ensure the anti-static effect, and facilitate subsequent disassembly and repair operations, the mounting mechanism includes a mounting plate fixedly arranged outside the grounding device, a placement groove is formed at the top of the valve stem and matched with the mounting plate, a recess is symmetrically formed in the mounting plate, and a positioning assembly matched with the valve stem is arranged in the recess.

[0008] Preferably, to facilitate the installation of the anti-static assembly, ensure the anti-static effect, and facilitate subsequent disassembly and repair operations, the positioning assembly includes a push plate slidingly arranged in the recess, the push plate and the inner wall of the recess are connected by a return spring, a positioning block is fixedly arranged on the side wall of the push plate away from the return spring, and a positioning groove matched with the positioning block is formed in the inner wall of the placement groove of the valve stem.

[0009] Preferably, in order to ensure that the dial plate does not deviate during movement, symmetrical guide blocks are arranged on the two side walls of the dial plate, and guide grooves are arranged on the groove side walls to match the guide blocks.

[0010] Preferably, in order to facilitate the connection and assembly of the valve body and the pipeline, the fixing mechanism comprises connection flanges one arranged symmetrically at both ends of the valve body, the connection flanges one are fixedly connected with connection flanges two through fixing screws, and gaskets are arranged between the connection flanges one and the connection flanges two.

[0011] Preferably, in order to ensure the sealing performance after connection, the end of the connection flange one is provided with a sealing sleeve, the peripheral surface of the sealing sleeve is provided with a sealing ring, the connection flange two is provided with a sealing slot matched with the sealing sleeve, and the inner wall of the sealing slot is provided with a sealing groove matched with the sealing ring.

[0012] Compared with the prior art, the utility model has the advantages that:

[0013] (1) The installation mechanism cooperates with the anti-static component, so that the static electricity generated by friction in the valve body can be guided out through the anti-static component during use, ensuring safety during use, and the installation mechanism can conveniently install and fix the anti-static component, ensuring the anti-static effect and facilitating quick disassembly when the anti-static component needs to be repaired or damaged.

[0014] (2) The fixing mechanism can conveniently connect and assemble the valve body and the pipeline, facilitating connection and use, ensuring the sealing performance after connection, avoiding leakage and ensuring safety in use. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 A structure diagram of the anti-static valve is provided.

[0016] Figure 2 A partial structure diagram of the anti-static component and the valve rod in the anti-static valve is provided.

[0017] Figure 3 A partial structure diagram of the anti-static valve is provided.

[0018] Figure 4 A partial structure diagram of the anti-static component and the installation mechanism in the anti-static valve is provided.

[0019] Figure 5 A structure diagram of the fixing mechanism in the anti-static valve is provided.

[0020] In the figure: 1, valve body; 2, operating knob; 3, valve stem; 4, grounding device; 5, connecting flange one; 6, gasket; 7, push plate; 8, reset spring; 9, plug-in hole; 10, positioning groove; 11, guide block; 12, positioning block; 13, recess; 14, guide groove; 15, sealing sleeve; 16, sealing ring; 17, sealing insertion slot; 18, sealing groove; 19, mounting plate; 20, connecting flange two. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0022] Please refer to Figures 1-5 An embodiment provided by the utility model: an anti-static valve, comprising a valve body 1, which is internally provided with a valve stem 3, the top end of the valve stem 3 is provided with an operating knob 2 for facilitating the rotation of the valve stem 3, thereby facilitating the opening and closing operation, for the valve body 1, it mainly comprises a valve seat, a valve core (connected with the valve stem 3 for facilitating the control of the on-off of fluid), a sealing element (such as a sealing gasket), which are relatively mature technologies and will not be described here, the middle part of the valve stem 3 is provided with a plug-in hole 9 of an anti-static assembly, the plug-in hole 9 is plugged with a grounding device 4 (mainly a grounding branch line for facilitating the introduction of static electricity generated by the mutual friction between the valve stem 3 and the valve core into the ground), for the grounding device 4, it further comprises a grounding body, a grounding main line and a connecting element (such as a grounding clamp and a grounding wire), which are relatively mature technologies and will not be described here, in order to facilitate the assembly of the valve body 1 and ensure the sealing effect during use, the two ends of the valve body 1 are symmetrically provided with connecting flanges one 5 of a fixing mechanism (which can be welded or integrally formed), the connecting flanges one 5 are connected with connecting flanges two 20 (connected with a pipeline) through fixing screws, in order to ensure the sealing of the connection, the connecting flanges one 5 and the connecting flanges two 20 are further provided with a gasket 6, the end of the connecting flanges one 5 is bonded with a sealing sleeve 15 (which can be made of rubber or silicone flexible sealing material, thereby ensuring the sealing and facilitating the assembly), the sealing sleeve 15 is bonded with a sealing ring 16 on the lateral surface, the connecting flanges two 20 are provided with a sealing insertion slot 17 matched with the sealing sleeve 15, and the inner wall of the sealing insertion slot 17 is provided with a sealing groove 18 matched with the sealing ring 16, thereby facilitating the connection and sealing without affecting the normal use.

[0023] Please refer to Figures 1-5, in order to facilitate the grounding device 4 assembly fixed, ensure that the anti-static effect in use, also convenient in overhaul or replacement convenient disassembly, facilitate the overhaul and replacement operation, grounding device 4 (ground branch) is equipped with mounting plate 19, the valve stem 3 top is provided with the placing groove for the convenient mounting plate 19 placement, in order to ensure the stability of installation, mounting plate 19 is symmetrically provided with recess 13, the recess 13 is slidably provided with the actuating plate 7 of positioning assembly, the actuating plate 7 is connected with the inner wall of the recess 13 through reset spring 8, the side wall of actuating plate 7 away from reset spring 8 is fixedly provided with positioning block 12, the placing groove of valve stem 3 inner wall is provided with the positioning groove 10 matched with positioning block 12, the two side walls of actuating plate 7 are symmetrically provided with guide block 11, the side wall of recess 13 is provided with guide groove 14 matched with guide block 11, can ensure that actuating plate 7 does not deviate during sliding, guiding and limiting.

[0024] Working principle: the utility model discloses in use, when the valve body 1 is connected with pipeline and assembled, through the alignment of connecting flange one 5 and connecting flange two 20, sealing sleeve 15 is inserted into sealing slot 17, sealing is carried out in cooperation with sealing ring 16 and sealing groove 18, then the assembly is completed through fixed screw cooperation gasket 6, while ensuring the sealing property after connection, when the grounding device 4 is assembled, by pressing actuating plate 7, two actuating plates 7 can slide in recess 13, guide block 11 slides in guide groove 14, ensuring that deviation does not occur, at this time, reset spring 8 is stressed to contract, positioning block 12 enters into the inside of positioning groove 10, by inserting grounding device 4 into plug-in hole 9, then mounting plate 19 enters into the inside of placing groove, at this time, positioning block 12 is aligned with positioning groove 10, and reset under the potential energy of reset spring 8, positioning block 12 enters into the inside of positioning groove 10, at this time, mounting plate 19 can be positioned and fixed, ensuring the stability during use, and the static electricity generated by friction in the valve body 1 can be led out through grounding device 4, ensuring safety.

[0025] It is obvious for those skilled in the art that the utility model is not limited to the details of the above-mentioned exemplary embodiments, and can be realized in other specific forms without departing from the spirit or basic characteristics of the utility model. Therefore, no matter from which point, the embodiments should be regarded as exemplary and non-limiting, the scope of the utility model is defined by the appended claims instead of the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the utility model. Any reference signs in the claims should not be regarded as limiting the involved claims.

Claims

1. An antistatic valve, comprising a valve body (1) and a valve stem (3), characterized in that: The valve body (1) is provided with the valve stem (3) inside. The valve stem (3) is provided with an operating knob (2) on the outside of the top of the valve stem (3). The valve stem (3) is provided with an anti-static component in the middle. The anti-static component is connected to the valve stem (3) through an installation mechanism. The valve body (1) is provided with a fixing mechanism at both ends.

2. The antistatic valve according to claim 1, characterized in that: The antistatic component includes a plug hole (9) in the middle of the valve stem (3), and a grounding device (4) is plugged into the plug hole (9).

3. The antistatic valve according to claim 2, characterized in that: The installation mechanism includes an installation plate (19) fixedly installed outside the grounding device (4). The valve stem (3) has a placement groove at the top end that matches the installation plate (19). The installation plate (19) has symmetrical grooves (13). The grooves (13) are provided with positioning components that match the valve stem (3).

4. The antistatic valve according to claim 3, characterized in that: The positioning component includes a toggle plate (7) slidably disposed in the groove (13). The toggle plate (7) is connected to the inner wall of the groove (13) by a return spring (8). A positioning block (12) is fixedly provided on the side wall of the toggle plate (7) away from the return spring (8). A positioning groove (10) matching the positioning block (12) is opened on the inner wall of the placement groove of the valve stem (3).

5. An antistatic valve according to claim 4, characterized in that: The two sides of the toggle plate (7) are symmetrically provided with guide blocks (11), and the side wall of the groove (13) is provided with a guide groove (14) that matches the guide block (11).

6. The antistatic valve according to claim 5, characterized in that: The fixing mechanism includes a first connecting flange (5) symmetrically arranged at both ends of the valve body (1). The first connecting flange (5) is fixedly connected to a second connecting flange (20) by fixing screws. A gasket (6) is also provided between the first connecting flange (5) and the second connecting flange (20).

7. An antistatic valve according to claim 6, characterized in that: The first connecting flange (5) is provided with a sealing sleeve (15) at one end, and a sealing ring (16) is provided on the circumferential side of the sealing sleeve (15). The second connecting flange (20) is provided with a sealing slot (17) that matches the sealing sleeve (15), and a sealing groove (18) that matches the sealing ring (16) is provided on the inner wall of the sealing slot (17).

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