Valve structure

Abstract

The utility model discloses a valve structure which comprises a valve body, a valve rod, a self-locking type driving assembly and an anti-disengaging limiting assembly. The self-locking driving assembly is assembled above the valve body, the self-locking driving assembly comprises a limiting lantern ring, the limiting lantern ring is fixedly assembled above the valve body, an internal thread driving ring is rotationally assembled in the limiting lantern ring, a plurality of locking air cavities are formed in the outer side of the internal thread driving ring, and locking cones are slidably assembled in the locking air cavities; the upper portion of the internal thread driving ring is in threaded connection with a compression thread sleeve. The anti-disengaging limiting assembly is arranged on the outer side of the valve rod in a sleeving mode and comprises an anti-disengaging piece. According to the valve structure, the self-locking type driving assembly is arranged, the driving state of the valve screw can be locked and positioned, the risk that the valve screw is affected by environmental factors and human factors to cause maloperation is reduced, and the reliability and the stability of adjusting and controlling the valve are improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to valve technical field, concretely relates to a valve structure. BACKGROUND

[0002] Valve is a kind of pipeline accessory for opening and closing pipeline, controls flow direction, adjusts and controls the parameter of conveying medium, can be divided into according to different functions: stop valve, check valve and regulating valve etc., and common valve is mainly composed of valve body, valve core and control unit several parts, wherein, screw rod transmission is a kind of more common control unit, the rotation of screw rod is controlled to make screw rod drive valve core to move under the action of internal and external thread, to adjust and control the conduction of valve body and flow rate.

[0003] The valve structure controlled by screw rod in prior art mostly does not have self-locking function, valve screw rod is influenced by environmental factors such as fluid impact vibration or operator misoperation and human factors in actual application process, and misoperation occurs, so that the stability and reliability of adjusting and controlling valve are poor.

[0004] Therefore, in view of the above technical problems, it is necessary to provide a valve structure.

[0005] The information disclosed in this BACKGROUND section is only for the purpose of increasing the understanding of the background of the present utility model and should not be regarded as an acknowledgment or any form of suggestion that this information forms prior art that is publicly known. CONTENT OF UTILITY MODEL

[0006] The utility model aims at providing a valve structure, which can self-lock and prevent misoperation for screw rod control valve.

[0007] In order to achieve the above object, a valve structure is provided in a specific embodiment of the utility model, which comprises: valve body, valve rod, self-locking drive assembly and anti-falling limiting assembly.

[0008] The upper side of the valve body is slidably assembled with the valve rod.

[0009] The self-locking drive assembly is assembled above the valve body, the self-locking drive assembly comprises a limiting sleeve ring, the limiting sleeve ring is fixedly assembled above the valve body, an internal thread drive ring is rotatably assembled in the limiting sleeve ring, the internal thread drive ring is sleeved on the outer side of the valve rod, and the internal thread drive ring is threadedly connected with the valve rod, a plurality of locking cavities are formed in the outer side of the internal thread drive ring, a locking cone is slidably assembled in each of the locking cavities, and a compression threaded sleeve is threadedly connected above the internal thread drive ring.

[0010] The anti-falling limiting component is sleeved on the outer side of the valve rod, the anti-falling limiting component comprises an anti-falling piece, the anti-falling piece is inserted and assembled above the inner thread driving ring, and the anti-falling piece is arranged in cooperation with the compression thread sleeve.

[0011] In one or more embodiments of the utility model, the fixed frame is fixedly connected between the limiting sleeve ring and the valve body. The fixed frame plays a role in assembling and fixing the limiting sleeve ring. The outer side of the inner thread driving ring is fixedly connected with an operating hand wheel. The inner thread driving ring is driven to rotate by controlling the rotation of the operating hand wheel, so that the valve rod can be lifted synchronously with the rotation of the inner thread driving ring under the action of the inner and outer threads.

[0012] In one or more embodiments of the utility model, the number of the locking air chambers is 3-8, and the supporting spring is fixedly connected between the plurality of locking cones and the inner thread driving ring. The locking cone is supported and reset by the contraction and reset of the supporting spring. The side of the locking cone away from the supporting spring is conical. The rotation state of the limiting sleeve ring and the inner thread driving ring is locked by the mutual contact of the locking cone and the inner wall of the limiting sleeve ring.

[0013] In one or more embodiments of the utility model, the compression air chamber is arranged above the inner thread driving ring. The compression air chamber stores air, and the air in the compression air chamber is compressed by the movement of the piston ring, so that the locking cone is easily popped out by the air supplied to the locking air chamber. The communication air duct is arranged between the compression air chamber and the plurality of locking cones, and the two ends of the plurality of communication air ducts are communicated with the locking air chamber and the compression air chamber respectively. The locking air chamber and the compression air chamber are communicated by the communication air duct.

[0014] In one or more embodiments of the utility model, the piston ring is slidably assembled in the compression air chamber, and the upper surface of the piston ring is fixedly connected with the lower end surface of the compression thread sleeve. The air in the compression air chamber is compressed and moved or extracted and reset by the movement of the piston ring.

[0015] In one or more embodiments of the utility model, the compression thread sleeve is fixedly connected with the driving top ring at one end outside the inner thread driving ring. The compression thread sleeve is controlled to rotate by applying force to the driving top ring. A pair of anti-falling grooves are arranged on the inner wall of the driving top ring. The anti-falling piece is clamped and limited to the compression thread sleeve by the mutual clamping of the clamping block and the anti-falling groove.

[0016] In one or more embodiments of the utility model, the bottom of the anti-falling piece is fixedly connected with a plurality of positioning columns, a plurality of insertion positioning holes are arranged above the inner thread driving ring, and the plurality of positioning columns are slidably assembled in the insertion positioning holes. The anti-falling piece is assembled and positioned by the cooperation of the positioning column and the insertion positioning hole.

[0017] In one or more embodiments of the utility model, the outer side of the anti -drop piece is integrative forming with a pair of clamping blocks, a pair of clamping blocks are correspondingly arranged with anti -drop recess. The cooperation of clamping block and anti -drop recess makes the anti -drop piece rotate limit to compression thread sleeve.

[0018] In one or more embodiments of the utility model, the outer side of the anti -drop piece is integrative forming with a pair of dismounting ear plates, a pair of dismounting ear plates are staggered with clamping block distribution, and the outer side of the dismounting ear plate is rounded. The dismounting ear plate is conveniently disassembled to the anti -drop piece by lifting.

[0019] Compared with the prior art, the utility model discloses a valve structure through setting self -locking type drive assembly can drive the locking position of valve screw rod, reduce the risk that valve screw rod appears misoperation under the influence of environmental factors and artificial factors, improve the reliability and stability of the adjustment control of valve. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical scheme in the embodiment of the utility model or prior art, the drawings needed to be used in the embodiment or prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained according to these drawings without creating creative labor.

[0021] Figure 1 It is the partial structure sectional view of a valve structure in an embodiment of the utility model;

[0022] Figure 2 It is the structure schematic view in A of the utility model; Figure 1

[0023] Figure 3 It is the partial structure schematic view of a valve structure in an embodiment of the utility model;

[0024] Figure 4 It is the partial structure perspective view of a valve structure in an embodiment of the utility model;

[0025] Figure 5 It is the structure schematic view in B of the utility model; Figure 4

[0026] Figure 6 It is the perspective view of a valve structure in an embodiment of the utility model.

[0027] MAIN REFERENCE NUMERALS EXPLANATION:

[0028] ​​1-Valve body, 101-Valve stem, 2-Self-locking drive assembly, 201-Limiting collar, 202-Internal thread drive ring, 203-Locking air chamber, 204-Locking cone, 205-Compression threaded sleeve, 206-Fixing bracket, 207-Operating handwheel, 208-Support spring, 209-Compression air chamber, 210-Piston ring, 211-Drive top ring, 3-Anti-detachment limiting assembly, 301-Anti-detachment component, 302-Positioning pin, 303-Clamping block, 304-Disassembly and assembly ear plate. Detailed Implementation

[0029] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0030] like Figures 1 to 6 As shown, a valve structure in one embodiment of the present invention includes: a valve body 1, a valve stem 101, a self-locking drive assembly 2, and an anti-disengagement limiting assembly 3.

[0031] like Figure 6 As shown, a valve stem 101 is slidably mounted on the upper part of the valve body 1. By controlling the raising and lowering movement of the valve stem 101, the movement of the valve core inside the valve body 1 is controlled, thereby facilitating the control of the conduction state of the valve body 1.

[0032] like Figures 1 to 3 As shown, the self-locking drive assembly 2 is mounted on top of the valve body 1. The self-locking drive assembly 2 includes a limiting collar 201, which is fixedly mounted on top of the valve body 1. The limiting collar 201 supports and limits the internal thread drive ring 202.

[0033] like Figure 6 As shown, a fixing bracket 206 is fixedly connected between the limiting collar 201 and the valve body 1. The fixing bracket 206 serves to assemble and fix the limiting collar 201.

[0034] like Figures 1 to 3 As shown, an internally threaded drive ring 202 is rotatably mounted inside the limiting collar 201. The internally threaded drive ring 202 is fitted onto the outside of the valve stem 101 and is threadedly connected to the valve stem 101. By controlling the rotation of the internally threaded drive ring 202, the valve stem 101 can move up and down synchronously with the rotation of the internally threaded drive ring 202 under the action of the internal and external threads.

[0035] like Figure 6As shown, the outer side of the internal thread driving ring 202 is fixedly connected with an operation hand wheel 207. The internal thread driving ring 202 is driven to rotate by controlling the rotation of the operation hand wheel 207, so that the valve rod 101 can be synchronously lifted and lowered with the rotation of the internal thread driving ring 202 under the action of the internal and external threads.

[0036] As shown, Figure 3 The outer side of the internal thread driving ring 202 is provided with a plurality of locking air cavities 203. The locking air cavities 203 accommodate, limit and guide the movement of the locking cones 204.

[0037] Specifically, the number of locking air cavities 203 is 3-8.

[0038] Preferably, the number of locking air cavities 203 is 4, which can effectively lock and position the internal thread driving ring 202.

[0039] As shown, Figures 1 to 2 A locking cone 204 is slidably assembled in each of the plurality of locking air cavities 203. The locking and positioning state of the internal thread driving ring 202 and the limiting collar 201 is controlled by the extension and retraction of the locking cone 204.

[0040] As shown, Figures 4 to 5 The upper side of the internal thread driving ring 202 is threadedly connected with a compression threaded sleeve 205. The compression threaded sleeve 205 drives the piston ring 210 to lift and lower under the action of the internal and external threads by controlling the rotation of the compression threaded sleeve 205, so that the air in the compression air cavity 209 can be compressed, transported or extracted.

[0041] As shown, Figures 1 to 2 A supporting spring 208 is fixedly connected between each of the plurality of locking cones 204 and the internal thread driving ring 202. The locking cone 204 is supported and reset by the contraction and reset of the supporting spring 208.

[0042] Notably, the side of the locking cone 204 away from the supporting spring 208 is conical. The rotation state of the limiting collar 201 and the internal thread driving ring 202 is locked by the mutual contact of the locking cone 204 and the inner wall of the limiting collar 201.

[0043] As shown, Figures 1 to 2 The upper side of the internal thread driving ring 202 is provided with a compression air cavity 209. The compression air cavity 209 stores air, which is compressed by the movement of the piston ring 210, so that the locking cone 204 can be popped out by transporting air to the locking air cavity 203.

[0044] Specifically, the compression air cavity 209 and the plurality of locking cones 204 are both provided with a communication air channel, and the two ends of the plurality of communication air channels are respectively communicated with the locking air cavity 203 and the compression air cavity 209. The locking air cavity 203 and the compression air cavity 209 are communicated by the communication air channel.

[0045] As shown in Figures 1 to 2 , the compression air cavity 209 is slidably provided with a piston ring 210, and the upper surface of the piston ring 210 is fixedly connected with the lower end surface of the compression threaded sleeve 205. The air in the compression air cavity 209 is compressed and moved or reset by the movement of the piston ring 210.

[0046] As shown in Figures 1 to 2 , the compression threaded sleeve 205 is fixedly connected with a driving top ring 211 at one end outside the inner threaded driving ring 202. The compression threaded sleeve 205 is rotationally controlled by applying force to the driving top ring 211.

[0047] In addition, a pair of anti-falling grooves are formed on the inner wall of the driving top ring 211. The anti-falling piece 301 is clamped and limited to the compression threaded sleeve 205 by the mutual clamping of the clamping block 303 and the anti-falling groove.

[0048] As shown in Figures 3 to 5 , the anti-falling limiting assembly 3 is sleeved on the outside of the valve stem 101, and the anti-falling limiting assembly 3 comprises an anti-falling piece 301, which is inserted and assembled above the inner threaded driving ring 202, and the anti-falling piece 301 is arranged in cooperation with the compression threaded sleeve 205.

[0049] As shown in Figures 3 to 5 , the bottom of the anti-falling piece 301 is fixedly connected with a plurality of positioning columns 302, and a plurality of insertion positioning holes are formed above the inner threaded driving ring 202, and the plurality of positioning columns 302 are slidably assembled in the insertion positioning holes. The anti-falling piece 301 is assembled and positioned by the cooperation of the positioning column 302 and the insertion positioning hole.

[0050] It is worth noting that the number of insertion positioning holes can be adjusted according to actual conditions, and the number of insertion positioning holes is even, which can ensure that the positioning column 302 is inserted and positioned.

[0051] As shown in Figures 3 to 5 , the anti-falling piece 301 is integrally formed with a pair of clamping blocks 303 on the outside, and the pair of clamping blocks 303 are correspondingly arranged with the anti-falling grooves. The anti-falling piece 301 is rotationally limited to the compression threaded sleeve 205 by the cooperation of the clamping block 303 and the anti-falling groove.

[0052] As shown in Figures 3 to 5As shown, the outer side of the anti-dropping piece 301 is integrally formed with a pair of disassembly lug plates 304, the pair of disassembly lug plates 304 are staggered with the clamping blocks 303, and the outer side of the disassembly lug plate 304 is rounded. The anti-dropping piece 301 is conveniently disassembled by pulling the disassembly lug plate 304.

[0053] In specific use, when the valve rod 101 needs to be controlled to move up and down, the anti-dropping limiting component 3 can be disengaged from the clamping limiting state of the compression threaded sleeve 205 by pulling the anti-dropping piece 301. At the same time, the compression threaded sleeve 205 can drive the piston ring 210 to move up in the compression air cavity 209 by controlling the rotation of the compression threaded sleeve 205. At this time, the air in the plurality of locking air cavities 203 can flow back to the compression air cavity 209 along the communication air duct, and the plurality of locking cones 204 can be retracted into the locking air cavities 203 along with the reset of the supporting spring 208, so as to contact the rotation locking state of the inner threaded driving ring 202 and the limiting sleeve ring 201.

[0054] Subsequently, the inner threaded driving ring 202 can be driven to rotate by controlling the rotation of the driving operation hand wheel 207, and the valve rod 101 can move up and down along with the rotation of the inner threaded driving ring 202 under the action of the inner and outer threads.

[0055] When the valve rod 101 is moved to the position, the compression air cavity 209 can be compressed by driving the piston ring 210 in the reverse rotation of the compression threaded sleeve 205, so that the air in the compression air cavity 209 can be transported to the locking air cavity 203 along the communication air duct, so that the plurality of locking cones 204 can be extended under the action of the air pressure, thereby locking and positioning the rotation locking state of the inner threaded driving ring 202. Then, the compression threaded sleeve 205 can be limited by the clamping block 303 matched with the anti-dropping groove.

[0056] It is obvious for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, the scope of the present application is defined by the appended claims rather than 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 present application. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0057] Furthermore, it should be understood that although the specification is described in terms of embodiments, not every embodiment includes every feature described. The specification can include implicit combinations of explicitly mentioned features and / or explicit combinations of implicitely mentioned features. Each embodiment depends on the explicit combinations of features and / or the implicit combinations of features made specifically within that embodiment, and each such embodiment can be combined with every other such embodiment to create further embodiments.

Claims

1. A valve structure, characterized in that, include: A valve body, on the upper part of which a valve stem is slidably mounted; A self-locking drive assembly is mounted on top of the valve body. The self-locking drive assembly includes a limiting collar, which is fixedly mounted on top of the valve body. An internally threaded drive ring is rotatably mounted inside the limiting collar. The internally threaded drive ring is fitted onto the outside of the valve stem and is threadedly connected to the valve stem. Multiple locking air chambers are opened on the outside of the internally threaded drive ring, and locking cones are slidably mounted in each of the multiple locking air chambers. A compression threaded sleeve is threadedly connected to the top of the internally threaded drive ring. An anti-disengagement limiting assembly is fitted onto the outside of the valve stem. The anti-disengagement limiting assembly includes an anti-disengagement component, which is inserted and assembled above the internal thread drive ring. The anti-disengagement component is configured to cooperate with a compression threaded sleeve.

2. The valve structure according to claim 1, characterized in that, A fixing bracket is fixedly connected between the limiting collar and the valve body, and an operating handwheel is fixedly connected to the outer side of the internal thread drive ring.

3. The valve structure according to claim 1, characterized in that, The number of locking air chambers is 3 to 8. Each of the locking cones and the internal thread drive ring is fixedly connected with a support spring. The side of the locking cone away from the support spring is tapered.

4. The valve structure according to claim 1, characterized in that, A compressed air chamber is provided above the internal thread drive ring. A connecting air passage is provided between the compressed air chamber and multiple locking cones. The two ends of the multiple connecting air passages are respectively connected to the locking air chamber and the compressed air chamber.

5. A valve structure according to any one of claims 2 or 3, characterized in that, A piston ring is slidably assembled inside the compressed air chamber, and the upper surface of the piston ring is fixedly connected to the lower end face of the compressed threaded sleeve.

6. A valve structure according to claim 4, characterized in that, A piston ring is slidably assembled inside the compressed air chamber, and the upper surface of the piston ring is fixedly connected to the lower end face of the compressed threaded sleeve.

7. A valve structure according to claim 6, characterized in that, The compression threaded sleeve is fixedly connected to a drive top ring at one end outside the internal thread drive ring, and a pair of anti-detachment grooves are provided on the inner wall of the drive top ring.

8. A valve structure according to claim 7, characterized in that, The bottom of the anti-detachment component is fixedly connected with several positioning pins, and multiple evenly distributed insertion positioning holes are opened above the internal thread drive ring. The positioning pins are slidably assembled in the insertion positioning holes.

9. A valve structure according to claim 8, characterized in that, The outer side of the anti-detachment component is integrally formed with a pair of locking blocks, and both of the locking blocks are set to correspond to the anti-detachment groove.

10. A valve structure according to claim 9, characterized in that, The outer side of the anti-detachment component is integrally formed with a pair of detachable ear plates, which are staggered with the locking block, and the outer side of the detachable ear plates is rounded.

Images