CN218207892U

CN218207892U - Ceramic knife gate valve

Info

Publication number: CN218207892U
Application number: CN202222603426.9U
Authority: CN
Inventors: 叶斌斌
Original assignee: Xinye Valve Zhejiang Co ltd
Current assignee: Xinye Valve Zhejiang Co ltd
Priority date: 2022-09-29
Filing date: 2022-09-29
Publication date: 2023-01-03
Anticipated expiration: 2032-09-29

Abstract

The utility model provides a ceramic knife gate valve, which comprises a valve body, a valve seat, a valve rod and a flashboard matched with the valve seat, wherein bushings are arranged on the valve body at two sides of the flashboard, the bushings and the flashboard are matched with each other to form a sealing pair, a first bulge and an installation part are arranged on the bushings, and a first groove for accommodating the first bulge and a mounting groove matched with the installation part are arranged on the valve body; the lower part of the flashboard is provided with a wedge-shaped inclined plane, a slope surface in contact fit with the wedge-shaped inclined plane is arranged on the valve seat, and insection protrusions are arranged on the contact surface of the slope surface and the wedge-shaped inclined plane; the first bulge and the mounting piece are arranged on the bushing to fix the bushing, so that the bushing is effectively prevented from moving due to the movement of the flashboard and the washing of fluid; set up insection arch on domatic, both can play further sealed effect, leave the clearance through insection arch again between its and the flashboard, prevent domatic and wedge inclined plane chucking.

Description

Ceramic knife gate valve

Technical Field

The utility model relates to the technical field of valves, specifically a pottery sword gate valve.

Background

The ceramic knife gate valve is also called ceramic knife gate valve and ceramic knife gate valve. The opening and closing part is a flashboard, the moving direction of the flashboard is vertical to the fluid direction, and the medium is cut off by the blade-shaped flashboard. The ceramic knife gate valve body has no cavity, and the gate plate is lifted in the side guide groove and pressed tightly on the valve seat by the lug at the bottom.

CN201487268U discloses a wear-resistant ceramic knife gate valve, this wear-resistant ceramic knife gate valve is through installing the ceramic bush in the valve body passageway of flashboard both sides, mutually support between this ceramic bush and the flashboard and form sealed vice to there is the wedge inclined plane at flashboard outlet side lower half edge system, this wedge inclined plane and the inclined plane of outlet side ceramic bush lower part mutually support the contact, exert sealing force for the flashboard to improve the wear resistance and the sealing performance of gate valve.

However, the ceramic bushing has the problem that the ceramic bushing is easy to shift along with the movement of the gate plate and the flushing of fluid, and the wedge-shaped inclined planes are easy to mutually extrude due to expansion with heat and contraction with cold to cause the gate plate to be clamped.

Disclosure of Invention

The utility model aims at overcoming the shortcoming and not enough that prior art exists, and providing a pottery sword-shaped gate valve, the utility model discloses the technical scheme who takes as follows:

a ceramic knife gate valve comprises a valve body, a valve seat, a valve rod and a gate plate matched with the valve seat, wherein bushings are arranged on the valve body on two sides of the gate plate, the bushings and the gate plate are matched with each other to form a sealing pair, a first bulge and an installation piece are arranged on the bushings, and a first groove used for accommodating the first bulge and an installation groove matched with the installation piece are arranged on the valve body; the lower part of the flashboard is provided with a wedge-shaped inclined plane, a slope surface in contact fit with the wedge-shaped inclined plane is arranged on the valve seat, and insection protrusions are arranged on the contact surface of the slope surface and the wedge-shaped inclined plane.

Preferably, the first projection includes a first projection fitted into the first groove and a second projection in contact with the shutter; one end of the mounting piece penetrates through the bushing and is fixed in the mounting groove, the other end of the mounting piece is in contact with the flashboard, and the contact surface of the mounting piece is made of elastic materials.

Preferably, the slope surface is a detachable structure made of elastic materials.

Preferably, the valve further comprises a stuffing box and a stuffing gland which are arranged between the valve body and the valve rod, wherein a first sealing ring combination and a second sealing ring combination are arranged in the stuffing box; the first sealing ring combination comprises a plurality of groups of V-shaped sealing rings, and the second sealing ring combination comprises a plurality of groups of V-shaped sealing rings symmetrically arranged with the first sealing ring combination.

Preferably, a first annular sealing ring is arranged in a gap between the first sealing ring combination and the second sealing ring combination.

Preferably, a second annular sealing ring is arranged at the bottom of the stuffing box.

Preferably, elastic packing with a triangular cross section is arranged between the first sealing ring combination and the packing gland and between the second sealing ring combination and the second annular sealing ring.

The beneficial effects of the utility model are as follows: the valve body is provided with the lining, so that the wear resistance of the valve body is enhanced, and meanwhile, the lining is fixed by the first bulge and the mounting piece, so that the lining is effectively prevented from moving due to the movement of the flashboard and the washing of fluid; the valve seat is provided with a slope surface in contact fit with the wedge-shaped inclined surface of the flashboard, and the contact surface of the slope surface and the wedge-shaped inclined surface is provided with insection protrusions, so that a further sealing effect can be achieved, a gap is reserved between the slope surface and the wedge-shaped inclined surface through the insection protrusions, and the slope surface and the wedge-shaped inclined surface are prevented from being clamped.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings obtained from these drawings still belong to the scope of the present invention without inventive laboriousness.

FIG. 1 is a front view of a ceramic knife gate valve;

FIG. 2 is a side view of a ceramic knife gate valve;

FIG. 3 is an enlarged view of FIG. 2 at B;

FIG. 4 is an enlarged view taken at A in FIG. 2;

in the figure, 1-valve body, 11-, 2-valve seat, 21-slope surface, 23-bushing, 231-first bulge, 232-mounting piece, 3-gate plate, 4-valve rod, 5-stuffing box, 51-first sealing ring combination, 52-second sealing ring combination, 53-second annular sealing ring and 6-stuffing gland.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings.

It should be noted that all expressions using "first" and "second" in the embodiments of the present invention are used to distinguish two entities with the same name but different names or different parameters, and it is understood that "first" and "second" are merely for convenience of expression and should not be construed as limitations of the embodiments of the present invention, and the following embodiments do not describe this one by one.

The terms of direction and position in the present invention, such as "up", "down", "front", "back", "left", "right", "inside", "outside", "top", "bottom", "side", etc., refer to the direction and position of the attached drawings only. Accordingly, the use of directional and positional terms is intended to illustrate and understand the present invention and is not intended to limit the scope of the invention.

Example 1

A ceramic knife gate valve comprises a valve body 1, a valve seat 2, a valve rod 4 and a gate plate 3 matched with the valve seat 2, wherein bushings 23 are arranged on the valve body 1 on two sides of the gate plate 3, the bushings 23 and the gate plate 3 are matched with each other to form a sealing pair, a first protrusion 231 and a mounting piece 232 are arranged on the bushings 23, and a first groove used for accommodating the first protrusion 231 and a mounting groove matched with the mounting piece 232 are arranged on the valve body 1; the lower part of the flashboard 3 is provided with a wedge-shaped inclined plane, a slope 21 which is in contact fit with the wedge-shaped inclined plane is arranged on the valve seat 2, and insection protrusions are arranged on the contact surface of the slope and the wedge-shaped inclined plane.

The first projection 231 includes a first projection fitted into the first groove and a second projection contacting the shutter 3; one end 232 of the mounting piece penetrates through the bushing 23 to be fixed in the mounting groove, the other end of the mounting piece is in contact with the gate plate 3, and the contact surface of the mounting piece is made of an elastic material; the slope surface is a detachable structure made of elastic materials.

The valve further comprises a stuffing box 5 and a stuffing gland 6 which are arranged between the valve body 1 and the valve rod 4, wherein a first sealing ring combination 51 and a second sealing ring combination 52 are arranged in the stuffing box 5; the first sealing ring combination 51 comprises a plurality of groups of V-shaped sealing rings, and the second sealing ring combination 52 comprises a plurality of groups of V-shaped sealing rings symmetrically arranged with the first sealing ring combination 52.

A first annular sealing ring is arranged in a gap between the first sealing ring combination 51 and the second sealing ring combination 52.

And a second annular sealing ring 53 is arranged at the bottom of the stuffing box 5.

Elastic packing with triangular sections is arranged between the first sealing ring combination 51 and the packing gland 6 and between the second sealing ring combination 52 and the second annular sealing ring 53.

The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the invention, which is defined by the appended claims.

Claims

1. The utility model provides a pottery knife gate valve, includes valve body (1), disk seat (2), valve rod (4) and with disk seat (2) complex flashboard (3), its characterized in that: the valve body (1) on two sides of the gate plate (3) is provided with a lining (23), the lining (23) and the gate plate (3) are matched with each other to form a sealing pair, a first protrusion (231) and a mounting piece (232) are arranged on the lining (23), and a first groove for accommodating the first protrusion (231) and a mounting groove matched with the mounting piece (232) are arranged on the valve body (1); the lower part of the flashboard (3) is provided with a wedge-shaped inclined plane, a slope surface (21) in contact fit with the wedge-shaped inclined plane is arranged on the valve seat (2), and insection protrusions are arranged on the contact surface of the slope surface and the wedge-shaped inclined plane.

2. The ceramic knife gate valve of claim 1, wherein: the first projection (231) comprises a first projection embedded in the first groove and a second projection contacted with the gate (3); one end of the mounting piece (232) penetrates through the bushing (23) to be fixed in the mounting groove, the other end of the mounting piece is in contact with the gate plate (3), and the contact surface of the mounting piece is made of elastic materials.

3. The ceramic knife gate valve of claim 1, wherein: the slope surface (21) is a detachable structure made of elastic materials.

4. The ceramic knife gate valve of claim 1, wherein: the valve further comprises a stuffing box (5) and a stuffing gland (6) which are arranged between the valve body (1) and the valve rod (4), wherein a first sealing ring combination (51) and a second sealing ring combination (52) are arranged in the stuffing box (5); the first sealing ring combination (51) comprises a plurality of groups of V-shaped sealing rings, and the second sealing ring combination (52) comprises a plurality of groups of V-shaped sealing rings symmetrically arranged with the first sealing ring combination (51).

5. The ceramic knife gate valve of claim 4, wherein: and a first annular sealing ring is arranged in a gap between the first sealing ring combination (51) and the second sealing ring combination (52).

6. The ceramic knife gate valve of claim 5, wherein: and a second annular sealing ring (53) is arranged at the bottom of the stuffing box (5).

7. The ceramic knife gate valve of claim 6, wherein: elastic packing with triangular sections is arranged between the first sealing ring combination (51) and the packing gland (6) and between the second sealing ring combination (52) and the second annular sealing ring (53).