CN219911755U

CN219911755U - Pneumatic bellows sealing stop valve

Info

Publication number: CN219911755U
Application number: CN202223181858.1U
Authority: CN
Inventors: 嵇兰花; 刘长城
Original assignee: Yancheng Baizhihui Valve Co ltd
Current assignee: Shanghai Guozhiding Railway Electrical Co ltd
Priority date: 2022-11-30
Filing date: 2022-11-30
Publication date: 2023-10-27
Anticipated expiration: 2032-11-30

Abstract

The utility model discloses a pneumatic bellows sealing stop valve, which comprises a stop valve casing, wherein a partition plate is fixedly connected inside the stop valve casing, a flow hole is formed in the middle of the partition plate in a penetrating way, a thread sleeve is fixedly sleeved at the center of the upper end of the stop valve casing, and a valve body mechanism is connected inside the stop valve casing in a threaded way, and the pneumatic bellows sealing stop valve has the beneficial effects that: the rotary table, the screw rod and the threaded sleeve are arranged to conveniently drive the valve plate to descend, so that the telescopic rod of the compression spring is convenient to cooperate with the annular groove and the sliding block to slide under the limiting action when the valve plate rotates to descend, and therefore the sealing performance of the pneumatic bellows sealing stop valve can be improved and the service life of the pneumatic bellows sealing stop valve can be prolonged through the elastic action of the spring and the telescopic rod when the sealing plate and the sealing gasket are worn.

Description

Pneumatic bellows sealing stop valve

Technical Field

The utility model relates to the technical field of stop valves, in particular to a pneumatic bellows sealing stop valve.

Background

The bellows stop valve is also called a bellows seal stop valve, and a metal barrier is formed between a fluid medium and the atmosphere by automatic roll welding, so that the design of zero leakage of the valve rod is ensured. The corrugated pipe stop valve adopts a corrugated pipe structure, and the lower end of the stainless steel corrugated pipe is welded on the valve rod so as to prevent the valve rod from being eroded by the process fluid.

The valve core of the existing pneumatic bellows sealing stop valve is lifted and sealed when the valve body rotates when being closed, but the valve core is gradually thinned due to continuous abutting friction when a sealing plate is used for a long time, so that the sealing performance of the pneumatic bellows sealing stop valve is gradually reduced when the valve body is closed, the valve body is inconvenient to keep sealing after being used, parts inside the valve body need to be replaced, and the service life of the valve body is prolonged.

Disclosure of Invention

The utility model aims to provide a pneumatic bellows sealing stop valve, which solves the problems in the background technology.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the pneumatic bellows sealing stop valve comprises a stop valve shell, wherein a partition plate is fixedly connected inside the stop valve shell, a flow hole is formed in the middle of the partition plate in a penetrating mode, a thread sleeve is fixedly sleeved at the center of the upper end of the stop valve shell, and a valve body mechanism is connected inside the stop valve shell in a threaded mode;

the valve body mechanism comprises a screw rod, screw rod threaded connection is in the thread bush, the screw rod lower extreme extends to in the stop valve casing and fixedly cup joints a valve plate, two ring channels have been seted up to the valve plate lower extreme, the screw rod activity has cup jointed a closing plate, closing plate upper surface both sides fixedly connected with two springs, two equal fixedly connected with connecting plate of spring upper end, just connecting plate and closing plate are two telescopic links of fixedly connected with jointly, two connecting plate upper surface fixedly connected with four sliders, two slider upper end sliding connection is in two ring channels.

Preferably, the two telescopic rods are movably sleeved in the two springs.

Preferably, the lower surface of the sealing plate is fixedly connected with a sealing gasket, and the lower surface of the sealing gasket is movably abutted against the partition plate.

Preferably, the upper end of the screw is fixedly connected with a rotary table.

Preferably, a first connecting pipe is fixedly connected to one side of the stop valve casing, and a second connecting pipe is fixedly connected to one side, away from the first connecting pipe, of the stop valve casing.

Compared with the prior art, the utility model has the beneficial effects that: the rotary table, the screw rod and the threaded sleeve are arranged to conveniently drive the valve plate to descend, so that the telescopic rod of the compression spring is convenient to cooperate with the annular groove and the sliding block to slide under the limiting action when the valve plate rotates to descend, and therefore the sealing performance of the pneumatic bellows sealing stop valve can be improved and the service life of the pneumatic bellows sealing stop valve can be prolonged through the elastic action of the spring and the telescopic rod when the sealing plate and the sealing gasket are worn.

Drawings

FIG. 1 is a schematic overall sectional view of the present utility model;

FIG. 2 is an enlarged schematic view of the portion A of FIG. 1 according to the present utility model;

FIG. 3 is a schematic view of a bottom cross-sectional structure of a valve plate of the present utility model;

FIG. 4 is a schematic top cross-sectional view of the seal plate and spring of the present utility model.

In the figure: 1. a valve housing; 2. a partition plate; 3. a flow hole; 4. a thread sleeve;

5. a valve body mechanism; 51. a screw; 52. a valve plate; 53. an annular groove; 54. a sealing plate; 55. a spring; 56. a telescopic rod; 57. a connecting plate; 58. a slide block; 59. a sealing gasket; 510. a turntable;

6. a first connection pipe; 7. and a second connection pipe.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-4, the present utility model provides a technical solution: the pneumatic bellows sealing stop valve comprises a stop valve shell 1, wherein the stop valve shell 1 is fixedly connected with a partition plate 2 inside the stop valve shell 1, a flow hole 3 is formed in the middle of the partition plate 2 in a penetrating mode, a thread sleeve 4 is fixedly sleeved at the center of the upper end of the stop valve shell 1, and a valve body mechanism 5 is connected inside the stop valve shell 1 in a threaded mode; the valve body mechanism 5 comprises a screw rod 51, the screw rod 51 is in threaded connection in the threaded sleeve 4, the lower end of the screw rod 51 extends into the stop valve shell 1 and is fixedly sleeved with a valve plate 52, the lower end of the valve plate 52 is provided with two annular grooves 53, the screw rod 51 is movably sleeved with a sealing plate 54, two springs 55 are fixedly connected to two sides of the upper surface of the sealing plate 54, connecting plates 57 are fixedly connected to the upper ends of the two springs 55, the connecting plates 57 and the sealing plate 54 are fixedly connected with two telescopic rods 56 together, the upper surfaces of the two connecting plates 57 are fixedly connected with four sliding blocks 58, and the upper ends of the two sliding blocks 58 are slidably connected in the two annular grooves 53.

Two telescopic links 56 are movably sleeved in two springs 55, a sealing gasket 59 is fixedly connected to the lower surface of the sealing plate 54, the lower surface of the sealing gasket 59 is movably propped against the partition plate 2, the upper end of the screw rod 51 is fixedly connected with a rotary disc 510, one side of the stop valve casing 1 is fixedly connected with a first connecting pipe 6, one side of the stop valve casing 1, which is far away from the first connecting pipe 6, is fixedly connected with a second connecting pipe 7, connection tightness of the sealing plate 54 is improved through the sealing gasket 59, and meanwhile, the stop valve casing 1 is conveniently connected, installed and used through the first connecting pipe 6 and the second connecting pipe 7.

Specifically, when the pneumatic bellows seal stop valve is used, after the stop valve housing 1 is stably installed through the first connecting pipe 6 and the second connecting pipe 7, the screw rod 51 is driven to rotate through the rotary disc 510, the screw rod 51 drives the valve plate 52 to rotate and descend under the rotation action of the threaded sleeve 4, the sliding block 58 is driven to slide in the annular groove 53 in the inner part when the valve plate 52 rotates, the sealing plate 54 and the sealing pad 59 are driven to descend along with the rotation descending of the valve plate 52 through the connection action of the spring 55 and the telescopic rod 56 to abut against the partition plate 2 to seal the flow hole 3, and when the lower ends of the sealing plate 54 and the sealing pad 59 are worn, the elastic action of the valve plate 52 gradually compresses the spring 55 and the telescopic rod 56 to always drive the sealing plate 54 and the sealing pad 59 to abut against the partition plate 2 when the pneumatic bellows seal stop valve is closed, so that the closing tightness and the service life of an internal valve core are increased when the pneumatic bellows seal stop valve is used.

In the description of the present utility model, it should be understood that the terms "coaxial," "bottom," "one end," "top," "middle," "another end," "upper," "one side," "top," "inner," "front," "center," "two ends," etc. indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," "third," "fourth," and the like are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, whereby features defining "first," "second," "third," "fourth" may explicitly or implicitly include at least one such feature.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "configured," "connected," "secured," "screwed," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intermediaries, or in communication with each other or in interaction with each other, unless explicitly defined otherwise, the meaning of the terms described above in this application will be understood by those of ordinary skill in the art in view of the specific circumstances.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A pneumatic bellows seal stop valve which characterized in that: the valve comprises a stop valve casing (1), wherein the stop valve casing (1) is fixedly connected with a partition plate (2) in the stop valve casing (1), a flow hole (3) is formed in the middle of the partition plate (2) in a penetrating mode, a thread sleeve (4) is fixedly sleeved at the center of the upper end of the stop valve casing (1), and a valve body mechanism (5) is connected with the inner thread of the stop valve casing (1);

the valve body mechanism (5) comprises a screw rod (51), the screw rod (51) is in threaded sleeve (4) in a threaded mode, the lower end of the screw rod (51) extends into a stop valve casing (1) and is fixedly sleeved with a valve plate (52), two annular grooves (53) are formed in the lower end of the valve plate (52), the screw rod (51) is movably sleeved with a sealing plate (54), two springs (55) are fixedly connected to two sides of the upper surface of the sealing plate (54), two connecting plates (57) are fixedly connected to the upper ends of the springs (55), two telescopic rods (56) are fixedly connected to the connecting plates (57) and the sealing plate (54), four sliding blocks (58) are fixedly connected to the upper surface of the connecting plates (57), and the upper ends of the sliding blocks (58) are slidably connected to the two annular grooves (53).

2. A pneumatic bellows seal shut-off valve according to claim 1, wherein: the two telescopic rods (56) are movably sleeved in the two springs (55).

3. A pneumatic bellows seal shut-off valve according to claim 1, wherein: the lower surface of the sealing plate (54) is fixedly connected with a sealing gasket (59), and the lower surface of the sealing gasket (59) is movably abutted against the partition plate (2).

4. A pneumatic bellows seal shut-off valve according to claim 1, wherein: the upper end of the screw rod (51) is fixedly connected with a rotary table (510).

5. A pneumatic bellows seal shut-off valve according to claim 1, wherein: one side of the stop valve shell (1) is fixedly connected with a first connecting pipe (6), and one side of the stop valve shell (1) far away from the first connecting pipe (6) is fixedly connected with a second connecting pipe (7).