Pneumatic double-seal gapless valve

Abstract

The utility model relates to the technical field of pipeline valves, in particular to a pneumatic double-seal gapless valve, which comprises a valve body, two-way valve seats, a sealing device, a pneumatic driving device, a mounting device and a valve plate. The pneumatic driving device is installed above the valve body through the installation device, the output end of the pneumatic driving device is connected with the valve plate, the valve plate is arranged in the two-way valve seat, and the sealing device is arranged on the valve body, so that the problems that in the prior art, the whole valve needs to be replaced after the valve seat of an existing pipeline valve is abraded, the replacement cost is high, and the replacement efficiency is high are solved. And the sealing performance of the valve is poor.

Description

TECHNICAL FIELD

[0001] The utility model relates to pipeline valve technical field especially relates to a pneumatic double seal gapless valve. BACKGROUND

[0002] Pipeline valve is a kind of device for controlling and regulating the flow of fluid in pipeline, it has vital role in industrial production and pipeline transportation, the working principle of pipeline valve is mainly through the movement of valve core or valve plate to control the flow of medium. When the orifice on valve core or valve plate is aligned with pipeline axis, valve is in open state, medium can pass through the passage of valve smoothly;When valve core or valve plate rotates or moves, orifice deviates from pipeline axis, valve is in closed state, medium cannot pass through the passage of valve, pneumatic double seal gapless valve is one of pipeline valve.

[0003] But the pipeline valve needs to replace the whole valve after valve seat wears, leading to higher replacement cost, and the valve sealing performance is poor. UTILITY MODEL CONTENTS

[0004] The utility model discloses a kind of pneumatic double seal gapless valves, to solve the technical problem that the pipeline valve in prior art needs to replace the whole valve after valve seat wears, leading to higher replacement cost, and the valve sealing performance is poor.

[0005] To achieve the above-mentioned purpose, a kind of pneumatic double seal gapless valve is used in the utility model, including valve body, two-way valve seat, sealing device, pneumatic drive device, mounting device and valve plate, the two-way valve seat is arranged at the two sides of the valve body, the pneumatic drive device is installed on the top of the valve body by the mounting device, the output end of the pneumatic drive device is connected with the valve plate, the valve plate is placed in the two-way valve seat, the sealing device is arranged on the valve body.

[0006] Among them, the pneumatic double seal gapless valve further includes deslagging device, and the deslagging device is welded to the lower end of the valve body.

[0007] Among them, the pneumatic drive device includes cylinder and support rod, the cylinder is installed on the mounting device, the output end of the cylinder is fixedly connected with the support rod, and the end, away from the cylinder, of the support rod is fixedly connected with the valve plate.

[0008] Among them, the sealing device includes sealing ring, packing and cover plate, the sealing ring is arranged on the valve body, and the cover plate is used to press the packing on the sealing ring.

[0009] Among them, the sealing ring is rectangular.

[0010] The installation device comprises a hollow piece, a first plate body and a second plate body, the first plate body and the second plate body are connected with the valve body and the cylinder respectively, and the hollow piece is arranged between the first plate body and the second plate body.

[0011] The lower end of the valve plate is in a wedge type structure.

[0012] The bidirectional valve seat comprises a framework and rubber lining, the framework is arranged on the valve body, the framework has a groove, and the rubber lining is arranged in the groove.

[0013] The pneumatic double-seal gapless valve of the utility model has the characteristics of long-distance operation control, fast response speed and low failure rate, and solves the technical problems of high replacement cost and poor valve sealing performance of the existing pipeline valve in the prior art. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained by those skilled in the art without creative labor on the basis of the drawings.

[0015] Figure 1 It is a structure schematic view of the pneumatic double-seal gapless valve of the utility model.

[0016] Figure 2 It is a partial structure schematic view of the pneumatic double-seal gapless valve of the utility model.

[0017] 101-valve body, 102-bidirectional valve seat, 103-valve plate, 104-cylinder, 105-supporting rod, 106-framework, 107-rubber lining, 108-groove, 109-slag removal device, 110-sealing ring, 111-packing, 112-cover plate, 113-hollow piece, 114-first plate body, 115-second plate body. DETAILED DESCRIPTION

[0018] The embodiments of the present application are described in detail below, examples of which are shown in the accompanying drawings, the embodiments described below by referring to the drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application.

[0019] Please refer to Figure 1 and Figure 2 , Figure 1 is a structural schematic diagram of the pneumatic double-seal gapless valve of the present application, Figure 2 is a partial structural schematic diagram of the pneumatic double-seal gapless valve of the present application.

[0020] The present application provides a kind of pneumatic double-seal gapless valve, including valve body 101, bidirectional valve seat 102, sealing device, pneumatic drive device, mounting device and valve plate 103, the bidirectional valve seat 102 is arranged in the two sides of the valve body 101, the pneumatic drive device is installed in the top of the valve body 101 by the mounting device, the output end of the pneumatic drive device is connected with the valve plate 103, the valve plate 103 is placed in the bidirectional valve seat 102, the sealing device is arranged on the valve body 101;

[0021] The pneumatic drive device includes cylinder 104 and support rod 105, the cylinder 104 is installed on the mounting device, the output end of the cylinder 104 is fixedly connected with the support rod 105, the end of the support rod 105 away from the cylinder 104 is fixedly connected with the valve plate 103;

[0022] The lower end of the valve plate 103 is wedge type structure;

[0023] The bidirectional valve seat 102 includes framework 106 and rubber lining 107, the framework 106 is arranged on the valve body 101, the framework 106 has groove 108, the rubber lining 107 is arranged in the groove 108.

[0024] In the specific embodiment, the high-pressure gas is first input into the cylinder 104 to push the piston to move and control the opening and closing of the valve plate 103, so that the valve plate 103 can be remotely controlled and has the characteristics of fast response speed and low failure rate. When the valve plate 103 starts, the medium flows to the pipeline through the valve body 101, and the valve body 101 with the bidirectional valve seat 102 prevents the medium from overflowing to the outside. When the valve plate 103 is closed, the bidirectional valve seat 102 prevents the medium from overflowing to the inside. The valve plate 103 prevents the medium from flowing in at the outlet end of the valve body 101. When the bidirectional valve seat 102 is worn, the bidirectional valve seat 102 can be directly replaced, without the need to replace the entire valve body 101. The sealing device prevents the medium from leaking during the opening and closing of the valve plate 103. In this way, the technical problem of the prior art that the entire valve needs to be replaced after the valve seat is worn, resulting in high replacement cost and poor valve sealing performance, is solved.

[0025] By setting the lower end of the valve plate 103 as a wedge structure, the bidirectional valve seat 102 is sealed without being damaged. When the valve plate 103 is closed, the bidirectional valve seat 102 is squeezed to widen the sealing line and increase the sealing. The wedge structure allows the valve plate 103 to cut slag during the opening and closing process, increasing the sealing performance.

[0026] The outer rubber lining 107 of the skeleton 106 can increase the adhesion. The rubber lining 107 is made of natural rubber material.

[0027] The pneumatic double-sealing gapless valve further includes a slag discharge device 109, which is welded to the lower end of the valve body 101.

[0028] In the specific embodiment, the slag cut off by the valve plate 103 during the opening and closing process of the valve plate 103 is discharged through the slag discharge device 109.

[0029] Secondly, the sealing device includes a sealing ring 110, a packing 111, and a cover plate 112. The sealing ring 110 is arranged on the valve body 101, and the cover plate 112 presses the packing 111 on the sealing ring 110.

[0030] The sealing ring 110 is in a rectangular shape.

[0031] In the specific embodiment, the specific rectangular sealing ring 110 and the packing 111 pressed by the upper cover plate 112 prevent the medium from leaking during the opening and closing of the valve plate 103.

[0032] Meanwhile, the mounting device comprises a hollow piece 113, a first plate body 114 and a second plate body 115, the first plate body 114 and the second plate body 115 are connected with the valve body 101 and the cylinder 104 respectively, and the hollow piece 113 is arranged between the first plate body 114 and the second plate body 115.

[0033] For this specific embodiment, the cylinder 104 is mounted on the second plate body 115, the first plate body 114 is fixedly connected with the valve body 101, and the hollow piece 113 connects the first plate body 114 with the second plate body 115.

[0034] When the valve plate 103 is closed, the bidirectional valve seat 102 prevents the medium from overflowing to the inside, and the valve plate 103 prevents the medium from flowing in at the outlet end of the valve body 101. When the bidirectional valve seat 102 is worn, the bidirectional valve seat 102 can be directly replaced, and the entire valve body 101 does not need to be replaced. The sealing device prevents the medium from leaking during the opening and closing process of the valve plate 103. In this way, the technical problems of the prior art, such as the need to replace the entire valve after the valve seat is worn, high replacement cost, and poor valve sealing performance, are solved.

[0035] The beneficial effects of the present application are as follows:

[0036] 1. During the opening and closing process of the valve plate 103, the valve plate 103 and the bidirectional valve seat 102 mounted in the valve body 101 form an internal sealing surface that is tightly bonded, which is wear-resistant, anti-washing, leak-proof, and has good and durable sealing performance. The bidirectional valve seat 102 can be replaced, which is convenient for equipment maintenance and improves the service life of the valve.

[0037] 2. The slag discharge device 109 can discharge the residual slag liquid of the valve body 101, improve the use efficiency of the valve plate 103, reduce the wear of the valve body 101, and has a long service life. The present application can be used in the field of fine particle material conveying pipeline slurry, sewage and the like with a nominal diameter of 1200mm or less in the mining, metallurgy, power plant, coal, chemical industry and other industries.

[0038] 3. The bidirectional valve seat 102 of this utility model has a unique reinforced skeleton 106 built in, which can greatly increase the strength of the bidirectional valve seat 102 and enable the equipment to operate stably under harsh working conditions.

[0039] 4. The upper end of the valve body 101 of this utility model and the sealing ring 110 have a sealing groove in the middle cavity. During the opening and closing process, the valve plate 103 and the sealing ring 110 form an upper seal, so that the medium does not leak upward.

[0040] 5. The upper end of the valve body 101 of this utility model is filled with the filler 111 and pressed with the cover plate 112, which enhances the sealing performance and makes it form an integral sealing effect with the sealing ring 110, the valve body 101 and the valve plate 103.

[0041] 6. The cylinder 104 of this utility model is used to control the opening and closing of the valve. It has the characteristics of being fast and accurate, enabling remote operation and control, and has a low failure rate.

[0042] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Those skilled in the art can understand that implementing all or part of the above-described embodiments and making equivalent changes in accordance with the claims of the present utility model are still within the scope of the utility model.

Claims

1. A pneumatic double-seal gapless valve, characterized in that, The valve includes a valve body, a two-way valve seat, a sealing device, a pneumatic drive device, a mounting device, and a valve plate. The two-way valve seat is disposed on both sides of the valve body. The pneumatic drive device is mounted on top of the valve body through the mounting device. The output end of the pneumatic drive device is connected to the valve plate. The valve plate is placed inside the two-way valve seat. The sealing device is disposed on the valve body.

2. The pneumatic double-seal gapless valve as described in claim 1, characterized in that, The pneumatic double-seal gapless valve also includes a slag discharge device, which is welded to the lower end of the valve body.

3. The pneumatic double-seal gapless valve as described in claim 2, characterized in that, The pneumatic drive device includes a cylinder and a support rod. The cylinder is mounted on the mounting device, the output end of the cylinder is fixedly connected to the support rod, and the end of the support rod away from the cylinder is fixedly connected to the valve plate.

4. The pneumatic double-seal gapless valve as described in claim 3, characterized in that, The sealing device includes a sealing ring, packing, and a cover plate. The sealing ring is disposed on the valve body, and the cover plate presses the packing onto the sealing ring.

5. The pneumatic double-seal gapless valve as described in claim 4, characterized in that, The sealing ring is rectangular.

6. The pneumatic double-seal gapless valve as described in claim 5, characterized in that, The installation device includes a hollow component, a first plate, and a second plate. The first plate and the second plate are respectively connected to the valve body and the cylinder. The hollow component is disposed between the first plate and the second plate.

7. The pneumatic double-seal gapless valve as described in claim 6, characterized in that, The lower end of the valve plate has a wedge-shaped structure.

8. The pneumatic double-seal gapless valve as described in claim 7, characterized in that, The bidirectional valve seat includes a skeleton and a rubber lining. The skeleton is disposed on the valve body and has grooves. The rubber lining is disposed within the grooves.

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