CN211231643U

CN211231643U - Circular knife gate valve used in papermaking industry

Info

Publication number: CN211231643U
Application number: CN201922180394.4U
Authority: CN
Inventors: 刘宇金; 杭黎娟
Original assignee: Wuxi Skf Machinery Manufacturing Co ltd
Current assignee: Wuxi Skf Machinery Manufacturing Co ltd
Priority date: 2019-12-09
Filing date: 2019-12-09
Publication date: 2020-08-11
Anticipated expiration: 2029-12-09

Abstract

The utility model discloses a circular knife gate valve used in the paper making industry, which comprises a valve seat, a valve plate is arranged at the middle part in the valve seat, one end of the valve plate is movably connected in the valve body, the valve body is positioned at one side of the valve seat, a valve seat sealing ring is arranged at the upper part of the valve seat, the lower end of the valve seat sealing ring is jointed with the upper side surface of the valve plate, so that the smoothness is high, the good sealing performance is ensured, the wear of a sealing pair in long-term use has an automatic compensation function to improve the service life, the valve body is fixedly connected on one side surface of a bracket, an auxiliary sealing component is arranged at one side in the valve seat to improve the sealing performance between the valve seat and the valve plate, the problem that the joint degree of the valve plate and the valve body is not high, a joint position is easy to generate a gap and the use performance is influenced is, the service life of the device is prolonged.

Description

Circular knife gate valve used in papermaking industry

Technical Field

The utility model relates to the technical field of valves, in particular to a circular knife gate valve for among the papermaking trade.

Background

The valve is a control part in a fluid conveying system and has the functions of stopping, adjusting, guiding, preventing counter flow, stabilizing pressure, shunting or overflowing and relieving pressure and the like. Valves used in fluid control systems range in variety and size from the simplest shut-off valves to the variety of valves used in extremely complex autonomous systems.

The valve can be used for controlling the flow of various types of fluids such as air, water, steam, various corrosive media, slurry, oil products, liquid metal, radioactive media and the like. The valves are further classified into cast iron valves, cast steel valves, stainless steel valves (201, 304, 316, etc.), chrome molybdenum steel valves, chrome molybdenum vanadium steel valves, dual-phase steel valves, plastic valves, nonstandard valves, etc. according to the material. Circular knife gate valves are one type of valve used in papermaking equipment.

However, in the prior art, due to abrasion of the sealing pair in long-term use, the valve plate and the valve body are not high in fitting degree, and a gap is easily generated at a fitting position to influence the use performance.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a circular knife gate valve for in the papermaking trade, the utility model discloses can reduce accessory wear rate, guarantee the leakproofness before valve plate and the disk seat, prolong its life.

In order to solve the technical problem, the utility model discloses a technical scheme does:

the utility model provides a circular knife gate valve for among papermaking trade, includes the disk seat, the middle part sets up the valve plate in the disk seat, valve plate one end swing joint is in the valve body, the valve body is located disk seat one side, disk seat upper portion sets up the valve seat sealing washer, the side laminating is gone up to valve seat sealing washer lower extreme and valve plate, valve body fixed connection is on a support side surface, one side sets up supplementary seal assembly in the disk seat.

Preferably, one end of the valve plate is fixedly connected with one end of an actuator through a connecting rod, and the actuator is installed on the other side surface of the support.

Preferably, two ends of the valve seat sealing ring are fixedly connected with the top end of the valve seat through screws.

Preferably, the joint of the valve plate and the valve body is provided with a filler body, the filler body is embedded on the inner surface of the valve body, and the inner surface of the filler body is jointed with the outer surface of the valve plate.

Preferably, the auxiliary sealing assembly comprises a return spring, the return spring is fixedly connected to the surface of the top end in the groove, the sealing pin is movably connected in the groove, and the other end of the return spring is fixedly connected with the upper end face of the sealing pin.

Preferably, a sealing rubber strip is arranged on the lower end face of the sealing pin, and two sides of the sealing rubber strip are processed to form arc-shaped surfaces.

Adopt above-mentioned technical scheme, because stopper and valve seat sealing washer's setting, make smooth finish high, good leakproofness has been guaranteed, there is the automatic compensation function to the vice wearing and tearing of sealing in long-term use and has improved life, because reset spring, the setting of sealed round pin and recess, make reset spring under the elastic force effect, make sealed round pin and valve plate closely laminate, improve the leakproofness between disk seat and the valve plate, the vice wearing and tearing of sealing in the long-term use have been solved, cause valve plate and valve body laminating degree not high, the laminating position very easily produces the gap, influence the problem of usability.

Drawings

Fig. 1 is a schematic sectional structure of the present invention;

fig. 2 is an enlarged schematic view of a portion a in fig. 1.

In the figure: the valve comprises a valve seat 1, a limiting block 2, a valve plate 3, a valve seat sealing ring 4, a valve body 5, a support 6, an actuator 7, a groove 8, a return spring 9 and a sealing pin 10.

Detailed Description

The following description of the present invention will be made with reference to the accompanying drawings 1-2. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features related to the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

The utility model provides a circular knife gate valve for among paper industry, includes disk seat 1, the middle part sets up valve plate 3 in the

disk seat

1, 3 one end swing joint of valve plate are in valve body 5, valve body 5 is located 1 one side of disk seat, 1 upper portion of disk seat sets up valve seat sealing washer 4, the side laminating is gone up to 4 lower extremes of valve seat sealing washer and valve plate 3, 5 fixed connection of valve body are on 6 side surfaces of support, one side sets up supplementary seal assembly in the disk seat 1, because stopper 2 and valve seat sealing washer 4's setting for smooth finish is high, has guaranteed good leakproofness, has the automatic compensation function to sealed vice wearing and tearing in long-term use and has improved life.

Valve plate 3 one end is through connecting rod and 7 one end fixed connection of executor, executor 7 is installed in 6 opposite side surfaces of support, drives valve plate 3 through executor 7 and connecting rod and removes, and then control valve plate 3's removal.

And two ends of the valve seat sealing ring 4 are fixedly connected with the top end of the valve seat 1 through screws, so that the sealing gasket of the valve seat 1 can be conveniently installed.

The joint of the valve plate 3 and the valve body 5 is provided with a packing body, the packing body is embedded on the inner surface of the valve body 5, the inner surface of the packing body is jointed with the outer surface of the valve plate 3, and the sealing property between the valve plate 3 and the valve body 5 is improved.

Supplementary seal assembly includes reset spring 9, top surface in recess 8 of reset spring 9 fixed connection, swing joint seal pin 10 in the recess 8, the 9 other ends of reset spring and 10 up end fixed connection of seal pin for reset spring 9 makes seal pin 10 and valve plate 3 closely laminate under the elastic force effect, improves the leakproofness between disk seat 1 and the valve plate 3.

And a sealing rubber strip is arranged on the lower end surface of the sealing pin 10, and the two sides of the sealing rubber strip are processed into arc-shaped surfaces, so that the sealing performance is further improved.

The working principle is as follows: valve body 5 is integral type foundry goods mechanism, valve plate 3 inserts valve body 5, valve body 5 has guide block and stopper 2 to guarantee guidance quality and the leakproofness of valve plate 3, pack into the packing body, with bolted connection packing body, put into valve seat sealing washer 4 at last, with bolted connection disk seat 1 with valve body 5, dress support 6 and executor 7 at last, the cutting edge is processed into to 3 bottom of valve plate, smooth finish is high, good leakproofness has been guaranteed, economic practicality is strong, when executor 7 control valve plate 3 removes, after valve plate 3 removes to 1 one end of disk seat, valve plate 3 extrudees sealed round pin 10, sealed round pin 10 extrudees reset spring 9, reset spring 9 makes sealed round pin 10 closely laminate with valve plate 3 under the elastic force effect.

The embodiments of the present invention have been described in detail with reference to fig. 1-2, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in the embodiments without departing from the principles and spirit of the invention, and the scope of the invention is to be accorded the full scope of the claims.

Claims

1. The utility model provides a circular knife gate valve for in papermaking trade which characterized in that: including disk seat (1), middle part sets up valve plate (3) in disk seat (1), valve plate (3) one end swing joint is in valve body (5), valve body (5) are located disk seat (1) one side, disk seat (1) upper portion sets up valve seat sealing washer (4), side laminating is gone up with valve plate (3) to valve seat sealing washer (4) lower extreme, valve body (5) fixed connection is on support (6) a side surface, one side sets up supplementary seal assembly in disk seat (1).

2. The circular knife gate valve used in the paper industry according to claim 1, characterized in that: valve plate (3) one end passes through connecting rod and executor (7) one end fixed connection, executor (7) are installed in support (6) other side surface.

3. The circular knife gate valve used in the paper industry according to claim 1, characterized in that: and two ends of the valve seat sealing ring (4) are fixedly connected with the top end of the valve seat (1) through screws.

4. The circular knife gate valve used in the paper industry according to claim 1, characterized in that: the joint of the valve plate (3) and the valve body (5) is provided with a filler body, the filler body is embedded on the inner surface of the valve body (5), and the inner surface of the filler body is jointed with the outer surface of the valve plate (3).

5. The circular knife gate valve used in the paper industry according to claim 1, characterized in that: supplementary seal assembly includes reset spring (9), top surface in recess (8) is connected to reset spring (9) fixed connection, swing joint seal pin (10) in recess (8), reset spring (9) other end and seal pin (10) up end fixed connection.

6. The circular knife gate valve used in the paper industry according to claim 5, characterized in that: and a sealing rubber strip is arranged on the lower end surface of the sealing pin (10), and arc-shaped surfaces are processed on two sides of the sealing rubber strip.