CN211398625U

CN211398625U - Double gate valve

Info

Publication number: CN211398625U
Application number: CN201921059259.8U
Authority: CN
Inventors: 张志洪; 丁宇; 王江; 商晓亮
Original assignee: Jiangsu Jingcheng Machinery Manufacturing Co ltd
Current assignee: Jiangsu Jingcheng Machinery Manufacturing Co ltd
Priority date: 2019-07-08
Filing date: 2019-07-08
Publication date: 2020-09-01
Anticipated expiration: 2029-07-08

Abstract

The utility model relates to the technical field of valves, in particular to a double-gate valve, which comprises a valve body, wherein the inner side wall of the valve body is provided with a first valve seat, a second valve seat, an inlet and an outlet, the first valve seat and the second valve seat are respectively provided with a first elastic wear-resistant pad and a second elastic wear-resistant pad on the opposite surfaces of each other, a vertically movable connecting block is arranged between the first elastic wear-resistant pad and the second elastic wear-resistant pad, a horizontally arranged connecting sleeve with two extending ends is arranged on the connecting block in a penetrating way, one end of the connecting sleeve is clamped with a first valve plate with clearance fit, the first valve plate is tightly attached with the first elastic wear, and the other end is clamped with a second valve plate in clearance fit, the second valve plate is tightly attached to a second elastic wear-resistant pad and can completely cover the outlet, a spring with two ends respectively abutted against the first valve plate and the second valve plate is arranged in the connecting sleeve, and the inner bottom wall of the valve body is communicated with a vent pipe with an inlet end extending out of the valve body. The utility model provides a how to carry out effective sealed technological effect to import and export, convenient to use, fault frequency is low.

Description

Double gate valve

Technical Field

The utility model relates to the technical field of valves, concretely relates to double gate valve.

Background

The double gate valve is a control unit for stopping medium movement in a conveying system, and is widely applied to a boiler combustion system due to the advantages of small opening and closing moment and small resistance. The double-gate valve among the prior art comprises the valve body that is equipped with import and export, two valve plates that set up in the valve body respectively with import and export laminating, the connecting block of welding between two valve plates and the valve rod of the vertical motion of transmission connecting block, and is obvious, and it has following defect: firstly, in the use process, circulating media are easy to accumulate on the inner bottom wall of the valve body, so that the valve plate cannot completely cover the inlet and the outlet, and the sealing failure is caused; secondly, because the valve plate is easily influenced by expend with heat and contract with cold in the use of valve plate, and two valve plates weld the both ends of connecting block, so make the valve plate can't closely laminate on import and export, lead to the leakproofness poor.

SUMMERY OF THE UTILITY MODEL

In view of the deficiency that the background art exists, the utility model provides a double-gate valve, the technical problem that its was solved is how to carry out effective seal to import and export.

For solving the technical problem, the utility model provides a following technical scheme:

the double-gate valve comprises a valve body, wherein a first valve seat, an inlet positioned in the first valve seat, a second valve seat opposite to the first valve seat and an outlet opposite to the inlet are arranged on the inner side wall of the valve body, a first elastic wear-resistant pad is arranged on the first valve seat on the surface opposite to the second valve seat, a second elastic wear-resistant pad is arranged on the second valve seat on the surface opposite to the first valve seat, a vertically movable connecting block is arranged between the first elastic wear-resistant pad and the second elastic wear-resistant pad, a horizontally arranged connecting sleeve is arranged on the connecting block in a penetrating manner, two ends of the connecting sleeve extend out of the connecting block, a first valve plate in clearance fit is clamped on one end of the connecting sleeve, the first valve plate and the first elastic wear-resistant pad are tightly attached and can completely cover the inlet, and a second valve plate in clearance fit is clamped on the other end of the connecting sleeve, the second valve plate is closely attached to the second elastic wear-resistant pad and can completely cover the outlet, a spring with two ends respectively abutted to the first valve plate and the second valve plate is arranged in the connecting sleeve, and a vent pipe with an inlet end extending out of the valve body is communicated with the inner bottom wall of the valve body.

The vertical valve rod that is equipped with in the valve body, the bottom of valve rod with the top threaded connection of connecting block, and the top is worn out the valve body and transmission are connected with vertical cylinder, vertical cylinder is located the top of valve body, and through the leg joint on the valve body.

And the inner wall of the valve body penetrating out of the valve rod is provided with a sealing strip.

The first valve plate and the second valve plate are both in a round table shape, and the small ends of the first valve plate and the second valve plate are opposite.

The valve body is made of wear-resistant alloy materials.

The first valve seat, the second valve seat, the first valve plate and the second valve plate are all made of ceramic materials.

The utility model discloses beneficial effect for prior art gained is: the vent pipe with the inlet end extending out of the valve body is communicated with the inner bottom wall of the valve body, and compressed gas is introduced into the inlet end of the vent pipe when the valve is used, so that circulating media cannot be accumulated on the inner bottom wall, and the technical effect of ensuring that the first valve plate and the second valve plate can completely cover corresponding inlets and outlets is further achieved; through first, the block of second valve plate clearance fit is at the both ends of adapter sleeve, it is first respectively to pass through being equipped with both ends in the adapter sleeve again, the spring of second valve plate, this just makes to have the function that can carry out effective compensation to the expend with heat and contract with cold volume of valve plate, thereby it is first to make, the second valve plate can closely laminate on first, second elasticity is rested on the cushion, it is first, the second cushion is established respectively first, the second valve seat is on the opposite face each other, and first, the second valve seat encloses respectively again and establishes outside import and export, and then realized carrying out effectively sealed technological effect to import and export. Compared with the prior art, the device has the advantages of convenient use, low failure frequency, low use cost and high working efficiency.

Drawings

Fig. 1 is a schematic view of the present invention.

Detailed Description

As shown in fig. 1: the double-gate valve comprises a valve body 1, wherein a first valve seat 2 is arranged on the inner side wall of the valve body 1, an inlet 3 positioned in the first valve seat 2, a second valve seat 4 opposite to the first valve seat 2 and an outlet 5 opposite to the inlet 3 are arranged on the inner side wall of the valve body 1, a first elastic wear-resistant pad 6 is arranged on the first valve seat 2 on the surface opposite to the second valve seat 4, a second elastic wear-resistant pad 7 is arranged on the surface opposite to the first valve seat 2 on the second valve seat 4, a vertically movable connecting block 8 is arranged between the first elastic wear-resistant pad 6 and the second elastic wear-resistant pad 7, a horizontally arranged connecting sleeve 9 is arranged on the connecting block 8 in a penetrating way, two ends of the connecting sleeve 9 extend out of the connecting block 8, a first valve plate 10 in clearance fit is clamped on one end of the connecting sleeve 9, the first valve plate 10 is tightly jointed with the first elastic wear-resistant pad 6 and can completely cover the inlet 3, second valve plate 11 and second elasticity wear pad 7 close laminating and can cover export 5 completely, be equipped with the spring 12 that both ends abut first valve plate 10 and second valve plate 11 respectively in the adapter sleeve 9, set up like this and make this device have the function of carrying out effective compensation to the expend with heat and contract with cold volume of valve plate to it is first to make, second valve plate 11 can closely laminate first, on second elasticity wear pad 7, and then realized carrying out effective sealed technological effect to import 3 and export 5. The ventilating pipe 13 with the inlet 3 end extending out of the valve body 1 is communicated on the bottom wall of the valve body 1, and compressed gas is introduced into the inlet 3 end of the ventilating pipe 13 when the valve body is used, so that circulating media cannot be accumulated on the inner bottom wall, and the technical effect that the corresponding inlet 3 and the corresponding outlet 5 can be completely covered by the first valve plate 11 and the second valve plate 11 is further achieved.

In this embodiment, the connecting block 8 achieves the technical effect of vertical movement through the following connection modes: the vertical valve rod 14 that is equipped with in the valve body 1, the bottom of valve rod 14 and the top threaded connection of connecting block 8, and the top is worn out valve body 1 and the transmission is connected with vertical cylinder 15, and vertical cylinder 15 is located the top of valve body 1, and connects on valve body 1 through support 16.

In this embodiment, the valve body 1 is provided with the sealing strip on the inner wall of wearing out valve rod 14 department, sets up like this and prevents that impurity from getting into and causing wearing and tearing to the part in the valve body 1 to effective increase of service life's technological effect has been realized.

In the present embodiment, the first valve plate 10 and the second valve plate 11 are both in the shape of circular truncated cones, and the small ends of the first valve plate and the second valve plate are opposite to each other, so that the arrangement prevents the circulating medium from accumulating between the bottom of the valve body 1 and the bottom of the first valve plate 10 and between the bottom of the valve body 1 and the bottom of the second valve plate 11, thereby further achieving the technical effect of ensuring that the first valve plate 10 and the second valve plate 11 can completely cover the corresponding inlet 3 and outlet 5

In this embodiment, the valve body 1 is made of wear-resistant alloy material, and the first valve seat 2, the second valve seat 4, the first valve plate 10 and the second valve plate 11 are made of ceramic material, so that the wear resistance and the scouring resistance of the device are improved, the service life of the device is prolonged, the failure frequency and the use cost are reduced, and the work efficiency is improved.

The working principle is as follows: when the medium circulation in the boiler combustion system needs to be stopped, compressed air is introduced into the inlet 3 end of the vent pipe 13, the piston rod of the vertical cylinder 15 is controlled to move downwards, the piston rod moves downwards to drive the valve rod 14 to move downwards, the valve rod 14 moves downwards to drive the connecting block 8 to move downwards, the connecting block 8 moves downwards to drive the connecting sleeve 9 to move downwards, in the process, the compressed air is blown from bottom to top in the valve body 1 through the vent pipe 13 to prevent flowing medium from being accumulated on the inner bottom wall of the valve body 1 until the first valve plate 10 and the second valve plate 11 at the two ends of the connecting sleeve 9 respectively and completely cover the corresponding inlet 3 and outlet 5, the piston rod of the vertical cylinder 15 is controlled to stop moving, and the introduction of the compressed air is stopped at the same time; when the medium circulation in the boiler combustion system needs to be recovered, the piston rod of the vertical cylinder 15 is reset to the initial state.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. Double gate valve, its characterized in that: the valve comprises a valve body, wherein a first valve seat, an inlet positioned in the first valve seat, a second valve seat opposite to the first valve seat and an outlet opposite to the inlet are arranged on the inner side wall of the valve body, the first valve seat is provided with a first elastic wear-resistant pad on the surface opposite to the second valve seat, the second valve seat is provided with a second elastic wear-resistant pad on the surface opposite to the first valve seat, a vertically movable connecting block is arranged between the first elastic wear-resistant pad and the second elastic wear-resistant pad, a horizontally arranged connecting sleeve is arranged on the connecting block in a penetrating manner, two ends of the connecting sleeve extend out of the connecting block, one end of the connecting sleeve is clamped with a first valve plate in clearance fit, the first valve plate is tightly attached with the first elastic wear-resistant pad and can completely cover the inlet, and the other end of the connecting sleeve is clamped with a second valve plate in clearance fit, the second valve plate is closely attached to the second elastic wear-resistant pad and can completely cover the outlet, a spring with two ends respectively abutted to the first valve plate and the second valve plate is arranged in the connecting sleeve, and a vent pipe with an inlet end extending out of the valve body is communicated with the inner bottom wall of the valve body.

2. The dual gate valve of claim 1, wherein: the vertical valve rod that is equipped with in the valve body, the bottom of valve rod with the top threaded connection of connecting block, and the top is worn out the valve body and transmission are connected with vertical cylinder, vertical cylinder is located the top of valve body, and through the leg joint on the valve body.

3. A double-gate valve as defined in claim 2, wherein: and the inner wall of the valve body penetrating out of the valve rod is provided with a sealing strip.

4. The dual gate valve of claim 1, wherein: the first valve plate and the second valve plate are both in a round table shape, and the small ends of the first valve plate and the second valve plate are opposite.

5. The dual gate valve of claim 1, wherein: the valve body is made of wear-resistant alloy materials.

6. The dual gate valve of claim 1, wherein said first valve seat, said second valve seat, said first valve plate and said second valve plate are made of a ceramic material.