CN216951710U

CN216951710U - Double-seal metal butterfly valve structure

Info

Publication number: CN216951710U
Application number: CN202220324004.5U
Authority: CN
Inventors: 陈德亮; 颜明川; 朱雪雪; 龙跃; 陈东生; 谭秀琼
Original assignee: Chongqing Kete Industrial Valve Co ltd
Current assignee: Chongqing Kete Industrial Valve Co ltd
Priority date: 2022-02-17
Filing date: 2022-02-17
Publication date: 2022-07-12
Anticipated expiration: 2032-02-17

Abstract

The utility model discloses a double-seal metal butterfly valve structure, which comprises a valve body, wherein a control device is arranged at the top end of the valve body, a valve seat is arranged on the inner side wall of the valve body, a valve clack is arranged on the inner side of the valve seat, a sealing assembly is arranged at the joint of the valve seat and the valve clack, a grease injection assembly is fixedly arranged at the right side of the top end of the valve body, a sealing ring is sleeved on the outer surface of the valve clack, two seals are separated by a metal gasket, a groove is formed between the outer circle of the metal gasket and the two seals, the outer circle of the metal gasket is lower than the sealing surface, the grease injection assembly comprises a grease injection nozzle, the top end of the grease injection nozzle is arranged outside the valve body, the sealing assembly adopts a multi-sheet combined type and is formed by alternately combining a thin stainless steel plate and a reinforced polytetrafluoroethylene plate, the thickness of the integral sealing assembly is adjustable, and the characteristics of soft and hard seals are combined, the advantages are high flexibility and good sealing performance.

Description

Double-seal metal butterfly valve structure

Technical Field

The utility model belongs to the technical field of butterfly valves, and particularly relates to a double-seal metal butterfly valve structure.

Background

A butterfly valve, also called a flap valve, is a regulating valve with simple structure, and can be used for the on-off control of low-pressure pipeline media, namely a valve which is opened and closed by rotating around a valve shaft, wherein a closing member (a valve clack or a butterfly plate) is a disk. The pipe mainly plays a role in cutting off and throttling. The butterfly valve opening and closing piece is a disc-shaped butterfly plate and rotates around the axis of the butterfly plate in the valve body, so that the opening and closing or adjusting purpose is achieved.

In the current market, a soft sealing ring or integral hard alloy is generally adopted as a sealing pair, in the actual use process, the soft sealing ring is generally used in a medium environment with lower pressure grade and no scouring, and the hard alloy has certain difficulty in processing, so that a structure which is suitable for an oil-gas environment, has certain scouring resistance, is suitable for a working condition with more complex media and is easy to form a sealing element is designed, and a double-sealing metal butterfly valve structure is provided.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a double-seal metal butterfly valve structure to solve the problems in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a double containment metal butterfly valve structure, includes the valve body, controlling means is installed on the top of valve body, the disk seat is installed to the inside wall of valve body, the valve clack is installed to the inboard of disk seat, the disk seat is provided with seal assembly with the junction of valve clack, the right side department fixed mounting on valve body top has notes fat subassembly.

Preferably, the outer surface cover of valve clack is equipped with the sealing washer, and the sealing washer is provided with twice, adopts the metal gasket to separate between twice sealed, and the metal gasket excircle is less than sealed face and twice and forms the slot between sealed.

Preferably, the grease injection assembly comprises a grease injection nozzle, the top end of the grease injection nozzle is arranged outside the valve body, a grease injection port is formed in the top end of the grease injection nozzle, a grease injection channel is formed in the grease injection nozzle, the top end of the grease injection channel is communicated with the grease injection port, a telescopic spring is arranged at the bottom end of the grease injection channel, a sealing ball is arranged at the top end of the telescopic spring, a flow channel is formed below the grease injection nozzle, the input end of the flow channel is communicated with the grease injection channel, and the output end of the flow channel is communicated with the groove.

Preferably, a sealing cover is movably arranged at the top end of the grease injection nozzle.

Preferably, the sealing assembly is of a multi-piece combined type and is formed by alternately combining a thin stainless steel plate and a reinforced tetrafluoro plate.

Preferably, the sealing assembly is fixedly mounted on the valve flap through a sealing pressure plate.

Compared with the prior art, the utility model has the beneficial effects that:

(1) according to the double-seal metal butterfly valve structure, the sealing assembly is of a multi-piece combined type and is formed by alternately combining a thin stainless steel plate and a reinforcing tetrafluoro plate, the thickness of the whole sealing assembly is adjustable, the characteristics of soft and hard sealing are combined, and the double-seal metal butterfly valve structure has the advantages of high flexibility and excellent sealing performance.

(2) When lubricating grease is injected into the grease injection assembly, impurities on part of the soft sealing assembly and the valve seat can be removed, and the sealing assembly and the valve seat are prevented from being scratched by the impurities; when emergency sealing grease is injected into the grease injection assembly, the groove can be filled with the sealing grease, and the emergency sealing effect can be achieved during leakage.

Drawings

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

FIG. 2 is a partial schematic view of the present invention;

fig. 3 is an enlarged view of the structure at a in fig. 2 according to the present invention.

In the figure: 1. a valve body; 2. a control device; 3. a valve seat; 4. a valve flap; 5. a seal assembly; 6. sealing the pressure plate; 7. a grease injection assembly; 701. a grease injection nozzle; 702. a grease injection port; 703. a grease injection channel; 704. a tension spring; 705. a sealing ball; 8. a sealing cover; 9. a flow channel.

Detailed Description

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 only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a dual-seal metal butterfly valve structure, which includes a valve body 1, a control device 2 installed at the top end of the valve body 1, a valve seat 3 installed on the inner side wall of the valve body 1, a valve flap 4 installed on the inner side of the valve seat 3, a sealing assembly 5 installed at the joint of the valve seat 3 and the valve flap 4, and a grease injection assembly 7 fixedly installed at the right side of the top end of the valve body 1.

In this embodiment, it is preferred, the surface cover of valve clack 4 is equipped with the sealing washer, and the sealing washer is provided with twice, adopts the metal gasket to separate between twice sealed, and the metal gasket excircle is less than sealed face and twice and forms the slot between sealed, through the slot that forms, provides the space for follow-up seal assembly 5's installation.

In this embodiment, preferably, the grease injecting assembly 7 includes a grease injecting nozzle 701, a top end of the grease injecting nozzle 701 is disposed outside the valve body 1, a grease injecting port 702 is disposed at a top end of the grease injecting nozzle 701, a grease injecting channel 703 is disposed inside the grease injecting nozzle 701, a top end of the grease injecting channel 703 is communicated with the grease injecting port 702, a bottom end of the grease injecting channel 703 is provided with a telescopic spring 704, a top end of the telescopic spring 704 is provided with a sealing ball 705, a flow channel 9 is disposed below the grease injecting nozzle 701, an input end of the flow channel 9 is communicated with the grease injecting channel 703, an output end of the flow channel 9 is communicated with the groove, when a user injects grease into the grease injecting port 702, pressure of the grease can press the sealing ball 705 downward, thereby releasing sealing of the grease injecting channel 703, and flowing into the flow channel 9 through the grease injecting channel 703, and flowing into a gap between the sealing assembly 5 and the valve seat 3 through the flow channel 9, can clear away the impurity on partial seal assembly 5 and the valve seat 3, avoid seal assembly 5 and valve seat 3 to be pressed the fish tail by impurity, when pouring into urgent sealing grease into annotating the fat subassembly, the slot can be filled up sealing grease, can play urgent sealed effect when revealing.

In this embodiment, preferably, the top end movable mounting of annotating fat mouth 701 has sealed lid 8, and through the sealed lid 8 that sets up, can seal annotating fat mouth 702, when avoiding not using, outside dust is through annotating inside fat mouth 702 gets into annotating fat subassembly 7, influences subsequent use.

In this embodiment, preferably, the sealing assembly 5 is a multi-piece combined type and is formed by combining a thin stainless steel plate and a reinforced teflon plate at intervals, the combined type sealing assembly 5 has the advantage of good flexibility, and compared with a traditional integral type sealing element, under the condition of applying the same closing force, the multi-piece combined type sealing assembly 5 has better sealing performance, the phenomenon that the sealing surface of the integral type sealing assembly 5 is not in uniform contact due to machining errors is eliminated, so that the sealing performance is poor, the sealing assembly 5 is more easily attached to the valve seat 3 in this way, and the sealing performance can reach six levels.

In this embodiment, preferably, the sealing assembly 5 is fixedly mounted on the valve flap 4 through the sealing pressure plate 6, and the sealing assembly 5 can be limited and fixed through the arranged sealing pressure plate 6.

The working principle and the using process of the utility model are as follows: the double-seal metal butterfly valve structure has the advantages that the combined type sealing component 5 has good flexibility, compared with the traditional integral type sealing element, under the condition of applying the same closing force, the sealing performance of the multi-piece combined type sealing component 5 is better, the phenomenon that the sealing surface of the integral type sealing component 5 is not in uniform contact due to processing errors is eliminated, the sealing performance is poor, the sealing component 5 is enabled to be more easily attached to the valve seat 3 in the mode, the sealing performance can reach six levels, after a user fills lubricating grease into the grease filling port 702, the pressure of the lubricating grease can press the sealing ball 705 downwards, the sealing of the grease filling channel 703 is relieved, the lubricating grease flows into the flow channel 9 through the grease filling channel 703 and flows into the gap between the sealing component 5 and the valve seat 3 through the flow channel 9, impurities on part of the sealing component 5 and the valve seat 3 can be removed, and the sealing component 5 and the valve seat 3 are prevented from being scratched by the impurities, when emergency sealing grease is injected into the grease injection assembly, the groove can be filled with the sealing grease, and the emergency sealing effect can be achieved during leakage.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments 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. The utility model provides a double containment metal butterfly valve structure, includes valve body (1), its characterized in that: controlling means (2) are installed on the top of valve body (1), disk seat (3) are installed to the inside wall of valve body (1), valve clack (4) are installed to the inboard of disk seat (3), disk seat (3) are provided with seal assembly (5) with the junction of valve clack (4), the right side department fixed mounting on valve body (1) top has notes fat subassembly (7).

2. The dual seal metal butterfly valve structure of claim 1, wherein: the outer surface cover of valve clack (4) is equipped with the sealing washer, and the sealing washer is provided with twice, adopts the metal packing piece to separate between twice is sealed, and the metal packing piece excircle is less than sealed face and twice and forms the slot between sealed.

3. The dual seal metal butterfly valve structure of claim 2, wherein: the grease injection assembly (7) comprises a grease injection nozzle (701), the top end of the grease injection nozzle (701) is arranged outside the valve body (1), a grease injection port (702) is formed in the top end of the grease injection nozzle (701), a grease injection channel (703) is formed in the grease injection nozzle (701), the top end of the grease injection channel (703) is communicated with the grease injection port (702), a telescopic spring (704) is arranged at the bottom end of the grease injection channel (703), a sealing ball (705) is arranged at the top end of the telescopic spring (704), a flow channel (9) is formed below the grease injection nozzle (701), the input end of the flow channel (9) is communicated with the grease injection channel (703), and the output end of the flow channel (9) is communicated with the groove.

4. The dual seal metal butterfly valve structure of claim 3, wherein: the top end of the grease injection nozzle (701) is movably provided with a sealing cover (8).

5. The dual seal metal butterfly valve structure of claim 1, wherein: the sealing assembly (5) adopts a multi-piece combined type and is formed by alternately combining a thin stainless steel plate and a reinforced PTFE plate.

6. The double-seal metal butterfly valve structure according to claim 1, wherein: the sealing assembly (5) is fixedly arranged on the valve clack (4) through a sealing pressure plate (6).