CN222458419U - Sealing structure of corrugated pipe valve - Google Patents

Abstract

The utility model discloses a sealing structure of a corrugated pipe valve, which relates to the technical field of valves, and is arranged at the upper end of a valve body and used for sealing a corrugated pipe base, wherein the corrugated pipe base is arranged on a valve rod. Through the cooperation of clamp plate, sealing member and bolt, can compress tightly the lower extreme of bellows base on the sealing member, can avoid the reciprocal flexible bellows to lead to the bellows base to appear not hard up condition, improve sealed effect, and also be convenient for the installation or the dismantlement of bellows base.

Description

Sealing structure of corrugated pipe valve

Technical Field

The utility model relates to the technical field of valves, in particular to a sealing structure of a corrugated pipe valve.

Background

The corrugated pipe valve is mainly used for industrial pipelines with special media such as inflammable, explosive, toxic, strong permeability, nuclear radiation and the like and severe working conditions due to the structural characteristics of the corrugated pipe valve, and has no external leakage point because the corrugated pipe valve is sealed by a metal corrugated pipe, and is widely used in industries such as petrochemical industry, nuclear power, polyester chemical fiber, pharmacy, aerospace industry and the like. In recent years, with the increasing awareness of environmental protection, bellows valves have been used in places where there are high demands on the environment. Bellows valves are becoming increasingly popular.

The bellows valve among the prior art is through setting up the handle in the upper end of valve body, and the one end of valve rod stretches into in the valve body and is connected with the case, and the other end of valve rod stretches into in the handle to another pot head at the valve rod is equipped with bellows, bellows footstock and bellows base, and wherein, bellows footstock and bellows base are connected at the both ends of bellows, and in the opening of valve body upper end was located to the bellows base and sealed through the sealing washer with between the valve body.

In the prior art, the following technical defects exist, in the use process, when the corrugated pipe stretches, the corrugated pipe can apply upward tension for the corrugated pipe base, so that the sealing ring between the corrugated pipe base and the valve body is easy to loose, and the fluid in the valve body is leaked, so that the sealing effect is poor.

Disclosure of utility model

The utility model aims to provide a sealing structure of a corrugated pipe valve, which is used for solving the technical problems.

The technical scheme adopted by the utility model is as follows:

The utility model provides a seal structure of bellows valve, sets up in the upper end of valve body for the seal of bellows base, bellows base installs on the valve rod, seal structure includes clamp plate, sealing member and bolt, the mounting groove has been seted up to the upper end of valve body, be equipped with in the mounting groove the sealing member, the sealing member is located the lower extreme of bellows base, the clamp plate passes through a plurality of the bolt is installed the upper end of valve body, just the clamp plate is located the upper end of bellows base.

Preferably, the pressing plate is in an annular arrangement, and a through hole is formed in the middle of the pressing plate.

Preferably, the sealing member comprises a sealing ring which is arranged in an annular mode, and at least two notches are formed in the upper end of the sealing ring.

As a further preferable mode, a first convex ring is arranged at the upper end of the sealing ring, and the first convex ring is located at the periphery of the valve rod.

As a further preferable mode, a first annular groove is formed in the lower end of the corrugated pipe base, and the first convex ring is arranged in the first annular groove.

As a further preferable mode, a second convex ring is arranged at the lower end of the sealing ring, a second annular groove is formed in the inner wall of the lower side of the mounting groove, and the second convex ring is arranged in the second annular groove.

As a further preferable mode, the outer edge of the sealing ring is provided with a plurality of third convex rings, the side wall of the mounting groove is provided with a plurality of third annular grooves, and the third convex rings are arranged in the third annular grooves.

The technical scheme has the following advantages or beneficial effects:

According to the utility model, the lower end of the corrugated pipe base can be pressed on the sealing element through the cooperation of the pressing plate, the sealing element and the bolt, the condition that the corrugated pipe base is loosened due to the reciprocating expansion of the corrugated pipe can be avoided, the sealing effect is improved, and the corrugated pipe base is convenient to install or detach.

Drawings

FIG. 1 is a schematic view of the internal structure of a sealing structure of a bellows valve according to the present utility model;

Fig. 2 is an enlarged view at a in fig. 1.

1, A pressing plate, 2, a sealing element, 3, a bolt, 4, a mounting groove, 5, a corrugated pipe base, 6, a sealing ring, 7, a notch, 8, a first convex ring, 9, a first annular groove, 10, a second convex ring, 11, a second annular groove, 12, a third convex ring, 13, a third annular groove, 14, a valve body, 15, a valve rod, 16, a handle, 17, a corrugated pipe, 18, a corrugated pipe top seat, 19, a hemispherical protrusion, 20 and a sealing part.

Detailed Description

The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. 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.

In the description of the present utility model, it should be noted that, if terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like are used, the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, only for convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the indicated apparatus or element 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," and the like, as used herein, are used for descriptive purposes only and are not to be construed as indicating or implying any relative importance.

In the description of the present utility model, unless explicitly stated or limited otherwise, the terms "mounted," "connected," and "connected" should be interpreted broadly, as referring to, for example, a fixed connection, a removable connection, or an integral connection, a mechanical connection, an electrical connection, a direct connection, an indirect connection via an intermediary, or a communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Fig. 1 is a schematic view of the internal structure of the sealing structure of the bellows valve in the present utility model, fig. 2 is an enlarged view of the position a in fig. 1, please refer to fig. 1 to 2, which shows a preferred embodiment, the sealing structure of the bellows valve is shown, which is disposed at the upper end of a valve body 14 for sealing a bellows base 5, the bellows base 5 is mounted on a valve rod 15, the sealing structure comprises a pressing plate 1, a sealing member 2 and a bolt 3, a mounting groove 4 is formed at the upper end of the valve body 14, the sealing member 2 is disposed in the mounting groove 4, the sealing member 2 is disposed at the lower end of the bellows base 5, the pressing plate 1 is mounted at the upper end of the valve body 14 by a plurality of bolts 3, and the pressing plate 1 is disposed at the upper end of the bellows base 5. In this embodiment, referring to fig. 1, the structure of the bellows 17 valve is a conventional structure, and the working principle thereof is the prior art. The corrugated pipe 17 valve comprises a valve body 14, a valve rod 15, a handle 16, a corrugated pipe 17, a corrugated pipe top seat 18 and a hemispherical protrusion 19, wherein the lower end of the valve rod 15 stretches into the valve body 14 and is connected with a sealing part 20, the upper end of the valve body 14 is in threaded connection with the handle 16, the upper end of the valve rod 15 stretches into the handle 16, the outer edge of the upper end of the valve rod 15 is sleeved with the corrugated pipe 17 and a spring, the spring is arranged on the periphery of the corrugated pipe 17, the upper end of the valve rod 15 is provided with the corrugated pipe top seat 18, the hemispherical protrusion 19 is arranged on the upper end of the corrugated pipe top seat 18, the inner wall of the upper side of the handle 16 is arranged in a notch 7 matched with the hemispherical protrusion 19, and the handle 16 is convenient to rotate through the arrangement of the hemispherical protrusion 19. The upper end of the valve rod 15 is further provided with a bellows base 5, as shown in fig. 1, and two ends of the bellows 17 and two ends of the spring are welded with the bellows top seat 18 and the bellows base 5. By rotating the handle 16, the handle 16 is moved up and down so that the valve stem 15 follows up and down, thereby opening or closing the passage in the valve body 14.

In this embodiment, referring to fig. 1, a circular hole is provided at the upper end of the valve body 14 for the valve rod 15 to pass through, wherein the mounting groove 4 is communicated with the circular hole, and the sealing member 2 and the bellows base 5 are both installed in the mounting groove 4, and the bellows base 5 and the sealing member 2 are fixed in the mounting groove 4 by the cooperation of the pressing plate 1 and the bolts 3, wherein the bolts 3 have a plurality, and the bellows base 5 is pressed downwards by the pressing plate 1, so that the bellows base 5 presses the sealing member 2 downwards, so that the sealing member 2 generates a certain deformation, thereby achieving the sealing effect. In this embodiment, through the cooperation of clamp plate 1 and bolt 3, can bellows base 5 and sealing member 2 install in mounting groove 4, can play sealed effect, also can be convenient for the dismantlement of bellows base 5, and can avoid bellows 17 to reciprocate when flexible and lead to bellows base 5 to appear not hard up condition.

Further, as a preferred embodiment, the pressing plate 1 is arranged in a ring shape, and a through hole is arranged in the middle of the pressing plate 1. As shown in fig. 1, a through hole is provided in the middle of the pressing plate 1 for avoiding the bellows 17 and the spring, so that the bellows 17 and the lower end of the spring can be fixedly connected with the bellows base 5. The lower surface of the pressure plate 1 in this embodiment is in contact with the upper surface of the bellows base 5.

Further, as a preferred embodiment, the sealing member 2 comprises a sealing ring 6 which is annularly arranged, and at least two notches 7 are formed in the upper end of the sealing ring 6. Referring to fig. 2, the upper end of the sealing ring 6 is provided with a first convex ring 8, the first convex ring 8 is located at the periphery of the valve rod, the lower end of the bellows base 5 is provided with a first annular groove 9, the first convex ring 8 is arranged in the first annular groove 9, the lower end of the sealing ring 6 is provided with a second convex ring 10, the inner wall of the lower side of the mounting groove 4 is provided with a second annular groove 11, the second convex ring 10 is arranged in the second annular groove 11, the outer edge of the sealing ring 6 is provided with a plurality of third convex rings 12, the side wall of the mounting groove 4 is provided with a plurality of third annular grooves 13, and the third convex rings 12 are arranged in the third annular grooves 13. In this embodiment, referring to fig. 2, the seal ring 6, the first convex ring 8, the second convex ring 10 and the third convex ring 12 are integrally arranged, and by matching the first convex ring 8 with the first annular groove 9, matching the second convex ring 10 with the second annular groove 11 and matching the third convex ring 12 with the third annular groove 13, the sealing effect can be effectively improved, and fluid leakage is avoided. Wherein, set up two notch 7 on the sealing washer 6, be convenient for the finger stretch into in notch 7 take out or install sealing washer 6.

When the novel corrugated pipe base is used, the sealing ring 6 is firstly installed, the second convex ring 10 on the sealing ring 6 enters the second annular groove 11, the third convex ring 12 enters the third annular groove 13, then the corrugated pipe base 5 is installed, the first annular groove 9 at the lower end of the corrugated pipe base 5 is matched with the first convex ring 8, then the pressing plate 1 is installed, the pressing plate 1 is fixed at the upper end of the valve body 14 through the bolt 3, the lower end of the pressing plate 1 presses the corrugated pipe base 5, and the phenomenon that the corrugated pipe base 5 is loose can be avoided.

The foregoing description is only illustrative of the preferred embodiments of the present utility model and is not to be construed as limiting the scope of the utility model, and it will be appreciated by those skilled in the art that equivalent substitutions and obvious variations may be made using the description and illustrations of the present utility model, and are intended to be included within the scope of the present utility model.

Claims (7)

1. The utility model provides a seal structure of bellows valve, sets up in the upper end of valve body for the seal of bellows base, bellows base installs on the valve rod, its characterized in that, seal structure includes clamp plate, sealing member and bolt, the mounting groove has been seted up to the upper end of valve body, be equipped with in the mounting groove the sealing member, the sealing member is located the lower extreme of bellows base, the clamp plate passes through a plurality of the bolt is installed the upper end of valve body, just the clamp plate is located the upper end of bellows base.

2. The sealing structure of the bellows valve according to claim 1, wherein the pressing plate is arranged in a ring shape, and a through hole is formed in the middle of the pressing plate.

3. The sealing structure of a bellows valve according to claim 1, wherein the sealing member includes a sealing ring which is arranged in an annular shape, and at least two notches are formed in an upper end of the sealing ring.

4. A bellows valve seal according to claim 3, wherein the upper end of the seal ring is provided with a first collar, the first collar being located at the periphery of the valve stem.

5. The sealing structure of the bellows valve according to claim 4, wherein a first annular groove is formed in the lower end of the bellows base, and the first convex ring is arranged in the first annular groove.

6. A sealing structure of a bellows valve according to claim 3, wherein a second convex ring is provided at the lower end of the sealing ring, a second annular groove is provided on the inner wall of the lower side of the mounting groove, and the second convex ring is provided in the second annular groove.

7. A sealing structure of a bellows valve according to claim 3, wherein the outer edge of the sealing ring is provided with a plurality of third convex rings, the side wall of the mounting groove is provided with a plurality of third annular grooves, and the third convex rings are arranged in the third annular grooves.