CN216382669U - Wear-resisting ball valve with dustproof function - Google Patents

Abstract

The utility model discloses a wear-resistant ball valve with a dustproof function, which relates to the technical field of ball valves and is used for solving the problems that a dustproof ball valve in the prior art needs a longer space in the flow passage direction, is poor in dustproof effect and is easy to lose efficacy because a spring is always in a compressed state. The ball valve can reduce the length of the space required by the ball valve in the flow channel direction, has better dustproof effect, and can greatly prolong the service life of the plate spring because the plate spring is not compressed and deformed by the thrust of a medium in the force transmission process.

Description

Wear-resisting ball valve with dustproof function

Technical Field

The utility model relates to the technical field of ball valves, in particular to the technical field of a wear-resistant ball valve with a dustproof function.

Background

Hard seal ball valves are commonly used in devices containing a large amount of dust in media such as polysilicon, coal chemical industry and the like, and such hard seal ball valves need to be provided with a dustproof structure to prevent dust from entering a pre-tightening spring behind a valve seat, thereby causing the pre-tightening spring to lose efficacy.

Dustproof ball valve among the prior art is including the valve body, the valve gap, the spheroid, valve rod and driving piece, be equipped with medium access passage and medium outflow passageway and connection chamber on the valve body, the spheroid sets up in connecting the intracavity, be equipped with sealed disk seat between medium access passage and medium outflow passageway and the spheroid, sealed disk seat is including disk seat body, be equipped with the sealing member between disk seat body and spheroid and the valve body respectively, disk seat body has the compression space for setting up between the other end of sealing member one end and the valve body, be equipped with in this compression space and support and press the spring, set up the installation cavity that supplies to press the spring installation on the disk seat body, be equipped with dustproof briquetting in the compression space between disk seat body and the valve body, the cover is equipped with dustproof sealing member on dustproof briquetting's the vertical terminal surface, this dustproof ball valve can play dirt-proof effect, and simple structure.

However, above-mentioned dustproof ball valve need design a spring holder, and this kind of structure is longer in the required space of runner orientation, and when small-bore valve need dustproof design, this kind of structure application just has the difficulty, and dustproof effect is not good, and the spring is in the state of compressing tightly all the time moreover, and long-term the use has the risk of inefficacy. In order to solve the technical problem, a wear-resistant ball valve with a dustproof function is particularly provided.

SUMMERY OF THE UTILITY MODEL

The utility model aims to: in order to solve the problems that a dustproof ball valve in the prior art needs a longer space in the flow channel direction, is poor in dustproof effect and is easy to lose efficacy because a spring is always in a compression state, the dustproof ball valve provided by the utility model has the advantages that the length of the ball valve in the space needed in the flow channel direction can be reduced through a sealing ring, a front filler, a rear filler, a front retainer ring, a rear retainer ring, a compression ring and the like, the dustproof effect is better, a medium acting force is transmitted through the compression ring, the rear filler, the rear retainer ring, the front retainer ring and a valve seat in sequence, a sealing specific pressure is generated after the ball body is compressed, and the plate spring cannot be further compressed and deformed due to the medium thrust in the force transmission process, so that the service life of the plate spring can be greatly prolonged.

The utility model specifically adopts the following technical scheme for realizing the purpose:

the utility model provides a wear-resisting ball valve with dustproof function, is including spheroid, disk seat and the valve body that connects gradually, install the sealing washer between disk seat and valve body, the front-mounted of disk seat has preceding filler, and the back is installed at the rear portion and is packed, install the preceding retaining ring and the back retaining ring of mutual contact between disk seat and valve body, preceding retaining ring and preceding filler contact, back retaining ring and back filler contact, it has spacing chamber to open between preceding retaining ring and the back retaining ring, the leaf spring is installed to spacing intracavity.

The preferred structure of spacing chamber does: the limiting cavity comprises a lower cavity and an upper cavity which are communicated with each other from top to bottom, the lower cavity is arranged in the front check ring, the upper cavity is arranged in the rear check ring, and the lower cavity and the upper cavity are obliquely arranged.

Preferably, an installation groove is formed in the valve seat along the circumferential direction of the valve seat, the sealing ring is installed in the installation groove, a step is formed in the valve seat, and the front filler is installed on the step.

Preferably, a compression ring is installed between the rear packing and the valve body, and the compression ring is in contact with the rear packing and the valve body.

The utility model has the following beneficial effects:

(1) according to the utility model, the length of a space required by the ball valve in the flow channel direction can be reduced by the sealing ring, the front filler, the rear filler and the pressing ring through the front check ring, the rear check ring, the pressing ring and the like, the dustproof effect is better, the medium acting force is transmitted through the pressing ring, the rear filler, the rear check ring, the front check ring and the valve seat in sequence, the sealing specific pressure is generated after the ball body is pressed, and the plate spring is not subjected to further compression deformation due to the medium thrust in the force transmission process, so that the service life of the plate spring can be greatly prolonged.

(2) According to the utility model, the upper part of the plate spring is arranged in the upper cavity of the rear retainer ring, the lower part of the plate spring is arranged in the lower cavity of the front retainer ring, and the upper cavity and the lower cavity are both obliquely arranged, so that when the valve is closed, the medium thrust does not act on the plate spring any longer, but directly contacts and transmits the medium thrust to the front retainer ring through the rear retainer ring, and thus the service life of the plate spring can be prolonged.

(3) According to the utility model, the compression ring is designed behind the rear filler, the outer diameter of the compression ring and the inner diameter of the valve seat comprise a circular ring which is a medium forward thrust action range, the small sealing diameter of the valve seat and the inner diameter of the valve seat comprise a circular ring which is a medium reverse thrust action range, and the difference value of the forward thrust and the reverse thrust is the thrust generated by the medium to the valve seat.

Drawings

FIG. 1 is a schematic front sectional view of the present invention;

FIG. 2 is a schematic front sectional view of the valve seat of the present invention;

FIG. 3 is a schematic front sectional view of the front retainer of the present invention;

FIG. 4 is a schematic front sectional view of the back retainer of the present invention;

reference numerals: the ball valve comprises a ball body 1, a valve seat 2, a mounting groove 21, a step 22, a front retainer ring 3, a lower cavity 31, a rear retainer ring 4, an upper cavity 41, rear packing 5, a pressure ring 6, a valve body 7, a plate spring 8, front packing 9, a sealing ring 10 and a limiting cavity 11.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Example 1

As shown in fig. 1-2, this embodiment provides a wear-resisting ball valve with dustproof function, including spheroid 1, disk seat 2 and the valve body 7 that connect gradually, install sealing washer 10 between disk seat 2 and valve body 7, the anterior mounting of disk seat 2 has preceding packing 9, the rear portion is installed and is packed 5, install preceding retaining ring 3 and back retaining ring 4 of mutual contact between disk seat 2 and valve body 7, preceding retaining ring 3 contacts with preceding packing 9, back retaining ring 4 contacts with back packing 5, it has spacing chamber 11 to open between preceding retaining ring 3 and back retaining ring 4, install leaf spring 8 in the spacing chamber 11.

The front packing 9 and the sealing ring 10 are designed in a dustproof manner and a sealing manner, a medium in a middle cavity can be prevented from entering a limiting cavity 11, the dustproof structure is small in installation space required in the flow channel direction and suitable for valves with various calibers, a plate spring 8 is installed in the limiting cavity 11 between a front check ring 3 and a rear check ring 4, the limiting design is adopted between the front check ring 3 and the rear check ring 4, the plate spring 8 can only be compressed in a limited range to generate initial pretightening force for the valves, the pretightening force cannot be too large or too small, the rear packing 5 is a main seal of the valve seat 2 and has a dustproof function, the action area of the medium thrust is limited in the range of the outer diameter of the compression ring 6 and the small-diameter circular ring of the valve seat 2, compared with the traditional structure, the thrust is greatly reduced, and the moment of the valve can be correspondingly reduced; the medium acting force is transmitted through the pressing ring 6, the rear packing 5, the rear retainer ring 4, the front retainer ring 3 and the valve seat 2 in sequence, the sealing specific pressure is generated after the ball body 1 is tightly pressed, and the plate spring 8 is not compressed and deformed further under the action of the medium thrust in the force transmission process, so that the service life of the plate spring 8 can be greatly prolonged; a scraper can be designed on the valve seat, and the valve can play a role in automatically cleaning the spherical surface in the opening and closing process of the valve.

Example 2

As shown in fig. 1-4, on the basis of the above embodiment 1, the present embodiment provides a preferable structure of the limiting cavity as follows: the limiting cavity 11 comprises a lower cavity 31 and an upper cavity 41 which are communicated with each other from top to bottom, the lower cavity 31 is arranged in the front retainer ring 3, the upper cavity 41 is arranged in the rear retainer ring 4, and both the lower cavity 31 and the upper cavity 41 are obliquely arranged.

In this embodiment: by installing the upper part of the plate spring 8 in the upper cavity 41 of the rear retainer ring 4, installing the lower part of the plate spring 8 in the lower cavity 31 of the front retainer ring 3, and arranging the upper cavity 41 and the lower cavity 31 obliquely, the plate spring 8 only provides initial pretightening force for the valve seat 2, when the valve is closed, the medium thrust does not act on the plate spring 8 any more, but directly passes through the rear retainer ring 4 to contact the front retainer ring 3 to transfer the medium thrust, so that the service life of the plate spring 8 can be prolonged.

Preferably, the valve seat 2 is provided with an installation groove 21 along the circumferential direction thereof, the sealing ring 10 is installed in the installation groove 21, the valve seat 2 is provided with a step 22, and the front packing 9 is installed on the step 22, so that the sealing ring 10 and the front packing 9 can be installed more stably, and the dustproof ball valve can be better sealed and dustproof.

Preferentially, install clamping ring 6 between back filler 5 and valve body 7, and clamping ring 6 and back filler 5, valve body 7 all contacts, it has clamping ring 6 to pack after 5 through the back, the external diameter of clamping ring 6 and the internal diameter of disk seat 2 contain the ring and be medium forward thrust application scope, the ring that the sealed path of disk seat 2 and the internal diameter of disk seat 2 contain is medium reverse thrust application scope, the difference of forward thrust and reverse thrust is the thrust that the medium produced to disk seat 2 promptly, this thrust can guarantee that the valve is sealed reliable, compare with the sealed form of traditional fixed ball, thrust is littleer, the action moment of production is littleer.

Claims (4)

1. The utility model provides a wear-resisting ball valve with dustproof function, includes spheroid (1), disk seat (2) and valve body (7) that connect gradually, its characterized in that: install sealing washer (10) between disk seat (2) and valve body (7), the front-mounted of disk seat (2) is preceding to be packed (9), and the rear portion is installed and is packed (5), install preceding retaining ring (3) and back retaining ring (4) of mutual contact between disk seat (2) and valve body (7), preceding retaining ring (3) and preceding packing (9) contact, back retaining ring (4) and back packing (5) contact, it has spacing chamber (11) to open between preceding retaining ring (3) and back retaining ring (4), install leaf spring (8) in spacing chamber (11).

2. The wear-resistant ball valve with the dustproof function of claim 1, characterized in that: spacing chamber (11) are including from the top down lower chamber (31) and epicoele (41) that communicate each other, lower chamber (31) are opened in preceding retaining ring (3), epicoele (41) are opened in back retaining ring (4), lower chamber (31) and epicoele (41) all incline to set up.

3. The wear-resistant ball valve with the dustproof function of claim 1, characterized in that: the sealing device is characterized in that an installation groove (21) is formed in the valve seat (2) in the circumferential direction, the sealing ring (10) is installed in the installation groove (21), a step (22) is formed in the valve seat (2), and the front filler (9) is installed on the step (22).

4. A wear-resistant ball valve with a dustproof function according to any one of claims 1 to 3, wherein: install clamping ring (6) between back filler (5) and valve body (7), and clamping ring (6) and back filler (5), valve body (7) all contact.

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