CN214662174U

CN214662174U - Through type full-sealed gate valve

Info

Publication number: CN214662174U
Application number: CN202120806373.3U
Authority: CN
Inventors: 张玉峰
Original assignee: Jiangsu Jingtai Petrochemical Equipment Co ltd
Current assignee: Jiangsu Jingtai Petrochemical Equipment Co ltd
Priority date: 2021-04-19
Filing date: 2021-04-19
Publication date: 2021-11-09
Anticipated expiration: 2031-04-19

Abstract

The application discloses through type totally enclosed push-pull valve should pass through type totally enclosed push-pull valve includes: the valve comprises a valve body, a valve seat, a valve plate and a telescopic assembly; the valve body is arranged on the valve seat, through holes for medium circulation are formed in the valve body and the valve seat, and a gap for the valve plate to linearly act to close or open the through holes is formed between the valve body and the valve seat; the telescopic assembly is arranged at the upper end of the valve body, and the output end of the telescopic assembly is fixedly connected with the upper end of the valve plate; the valve comprises a valve body and a valve seat, and is characterized in that a first sealing layer and a second sealing layer are sequentially arranged on the opposite surfaces of the valve body and the valve seat from inside to outside, and the first sealing layer and the second sealing layer are located on the two sides of the valve plate and are hermetically arranged on the side surfaces of the valve plate. The application has solved the push-pull valve among the correlation technique sealed effect relatively poor, is not suitable for the vacuum, contain gaseous operating mode to granular medium contacts with the sealing washer for a long time, influences the problem of sealed effect.

Description

Through type full-sealed gate valve

Technical Field

The application relates to the technical field of valves, in particular to a through type full-sealing gate valve.

Background

The gate valve is a valve with a gate plate and a valve seat which are always in close contact and sealed, and the principle of the gate valve is that a round opening with the same size as the drift diameter is formed in the gate plate, and the round opening on the gate plate and the drift diameter are completely separated and matched through opening and closing of the gate plate. The valve has the advantages that the drift diameter of the valve body is not provided with a groove, the medium cannot be blocked and blocked, the valve has the full-drift-diameter circulation characteristic, and the sealing structure can be divided into a soft sealing structure and a hard sealing structure. The penetrating knife gate valve has the characteristics of precise structure, good manufacturability, compact structure and the like, and the sealing valve seat is designed to be a movable structure and has the functions of abrasion resistance and automatic compensation, so the service life is longer. The valve seat and the gate plate always move in a clinging manner in the closing and opening processes, so that the opening and closing force of the valve is stable, and the valve has the characteristics of cutting off media and the like. However, the gate valve in the related art has poor sealing effect, is not suitable for the working conditions of vacuum and gas, and has the problems that the medium attached to the valve plate contacts the sealing ring when the valve plate acts on the working condition containing particles such as fly ash, and the sealing ring is damaged after long-term use, so that the sealing effect is influenced.

Aiming at the problems that the gate valve in the related art has poor sealing effect, is not suitable for the working conditions of vacuum and gas, and the granular medium is contacted with the sealing ring for a long time to influence the sealing effect, an effective solution is not provided at present.

SUMMERY OF THE UTILITY MODEL

The main aim at of this application provides a through type totally enclosed push-pull valve to it is relatively poor to solve the sealed effect of plug-pull valve among the correlation technique, is not suitable for the operating mode of vacuum, gas-containing, and granular medium contacts with the sealing washer for a long time, influences the problem of sealed effect.

In order to achieve the above object, the present application provides a penetration type full-sealing gate valve, which comprises: the valve comprises a valve body, a valve seat, a valve plate and a telescopic assembly; the valve body is arranged on the valve seat, through holes for medium circulation are formed in the valve body and the valve seat, and a gap for the valve plate to linearly act to close or open the through holes is formed between the valve body and the valve seat; the telescopic assembly is arranged at the upper end of the valve body, and the output end of the telescopic assembly is fixedly connected with the upper end of the valve plate; the valve comprises a valve body and a valve seat, and is characterized in that a first sealing layer and a second sealing layer are sequentially arranged on the opposite surfaces of the valve body and the valve seat from inside to outside, and the first sealing layer and the second sealing layer are located on the two sides of the valve plate and are hermetically arranged on the side surfaces of the valve plate.

Furthermore, the valve body and the inner ring of the valve seat are tightly attached to the valve plate and used for scraping media adsorbed on the surface of the valve plate when the valve plate acts.

Furthermore, the first sealing layer is provided with two high-temperature-resistant asbestos-free gaskets which are respectively embedded on the opposite surfaces of the valve body and the valve seat; the high-temperature-resistant asbestos-free gasket is tightly attached to the valve plate and used for scraping media adsorbed on the surface of the valve plate when the valve plate acts.

Furthermore, the first sealing layer is provided with two high-temperature-resistant paperboards which are respectively embedded in the opposite surfaces of the valve body and the valve seat; the high-temperature-resistant paperboard is tightly attached to the valve plate and used for scraping media adsorbed on the surface of the valve plate when the valve plate acts.

Furthermore, the second sealing layer is provided with two high-temperature-resistant rubber sealing rings which are respectively embedded in the opposite surfaces of the valve body and the valve seat; the high-temperature resistant rubber sealing ring is tightly attached to the valve plate.

Further, the lower extreme of valve body is provided with first valve gap, have the cavity that is used for holding the valve plate in the first valve gap, the cavity with clearance intercommunication between valve body and the disk seat, first valve gap with the valve body can be dismantled and be connected.

Furthermore, a second valve cover is detachably arranged at the upper end of the valve body, the telescopic assembly comprises a support fixed at the upper end of the first valve cover and an air cylinder fixedly arranged at the upper end of the support, and a piston rod of the air cylinder penetrates through the support and extends into the second valve cover; the upper end of the valve plate extends into the second valve cover and is in transmission connection with the piston rod.

Furthermore, a flow guide hole corresponding to the through hole is formed in the valve plate.

Further, the surface of the valve plate is plated with hard chromium or treated with ion nitriding.

Further, the inner ring of the valve seat is of a metal structure or a rubber structure or a PTFE plastic structure.

In the embodiment of the application, the valve body, the valve seat, the valve plate and the telescopic assembly are arranged; the valve body is arranged on the valve seat, through holes for medium circulation are formed in the valve body and the valve seat, and a gap for the valve plate to linearly act to close or open the through holes is formed between the valve body and the valve seat; the telescopic assembly is arranged at the upper end of the valve body, and the output end of the telescopic assembly is fixedly connected with the upper end of the valve plate; the valve comprises a valve body and a valve seat, and is characterized in that a first sealing layer and a second sealing layer are sequentially arranged on the opposite surfaces of the valve body and the valve seat from inside to outside, and the first sealing layer and the second sealing layer are located on the two sides of the valve plate and are hermetically arranged on the side surfaces of the valve plate. The purpose of carrying out double-deck and two-way seal to the action of valve plate has been reached to realized improving the sealing performance of push-pull valve, improved life and sealed effect technological effect, and then solved the push-pull valve among the correlation technique sealed the effect relatively poor, be not suitable for the vacuum, contain gaseous operating mode, and granular medium contacts with the sealing washer for a long time, influences the problem of sealed effect.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, serve to provide a further understanding of the application and to enable other features, objects, and advantages of the application to be more apparent. The drawings and their description illustrate the embodiments of the invention and do not limit it. In the drawings:

FIG. 1 is a schematic side view of an embodiment of the present application;

FIG. 2 is a schematic front view of an embodiment according to the present application;

FIG. 3 is an enlarged schematic view of a portion A of FIG. 1;

the valve comprises a valve body 1, a valve seat 2, a valve plate 3, a second sealing layer 4, a first sealing layer 5, a second valve cover 6, a support 10, a piston rod 11, a cylinder 12 and a first valve cover 13.

Detailed Description

In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all 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 application.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used.

In this application, the terms "upper", "lower", "inside", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.

Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.

Furthermore, the terms "disposed," "provided," "connected," "secured," and the like are to be construed broadly. For example, "connected" may be a fixed connection, a detachable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In addition, the term "plurality" shall mean two as well as more than two.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.

As shown in fig. 1 to 3, an embodiment of the present application provides a through type full-sealing gate valve, including: the valve comprises a valve body 1, a valve seat 2, a valve plate 3 and a telescopic assembly; the valve body 1 is arranged on the valve seat 2, through holes for medium circulation are formed in the valve body 1 and the valve seat 2, and a gap for the valve plate 3 to linearly act to close or open the through holes is formed between the valve body 1 and the valve seat 2; the telescopic component is arranged at the upper end of the valve body 1, and the output end of the telescopic component is fixedly connected with the upper end of the valve plate 3; the opposite surfaces of the valve body 1 and the valve seat 2 are sequentially provided with a first sealing layer 5 and a second sealing layer 4 from inside to outside, and the first sealing layer 5 and the second sealing layer 4 are located on two sides of the valve plate 3 and are arranged in a sealing mode with the side face of the valve plate 3.

In this embodiment, the upper and lower both ends of valve body 1 have the hole that is used for valve plate 3 to pass, and valve seat 2 is installed on the right side of valve body 1, has the clearance that is used for valve plate 3 to pass between valve seat 2 and the valve body 1, and this clearance communicates with the hole at valve body 1 both ends. The diameter of the through hole in the valve body 1 is larger than or equal to the diameter of the through hole in the valve seat 2, and the inner rings of the valve body 1 and the valve seat 2 are tightly attached to the valve plate 3 and used for scraping off the medium adsorbed on the surface of the valve plate 3 when the valve plate 3 acts. The telescopic assembly has the function of driving the valve plate 3 to perform linear displacement, and specifically drives the valve plate 3 to perform vertical displacement, so that the through hole can be opened and closed, and the telescopic assembly can be a cylinder 12 or a hydraulic cylinder. First sealing layer 5 and second sealing layer 4 are concentric ring seal to first sealing layer 5 and second sealing layer 4 all set up to at least two and lie in the both sides of valve plate 3, lie in the left first sealing layer 5 of valve plate 3 and fix on valve body 1, lie in the right first sealing layer 5 of valve plate 3 and then fix on valve seat 2, and second sealing layer 4 sets up in the same way. Through the arrangement of double-layer sealing, the sealing performance of the gate valve is improved, and the gate valve is suitable for vacuum and gas-containing working conditions.

When the gate valve is applied to other powdery particles such as fly ash and sintered ash, most of granular media are scraped by the inner ring of the valve body 1 and the inner ring of the valve seat 2 which are tightly attached to the surface of the valve plate 3, and the small part of granular media still attached to the surface of the valve plate 3 in the moving process of the valve plate 3 are scraped by the first sealing layer 5 through the first sealing layer 5, namely the second sealing layer 4 is not contacted with the granular media on the valve plate 3, so that the service life of the second sealing layer 4 is prolonged, and the sealing performance of the second sealing layer can still meet the use requirement after the gate valve is used for a long time.

As shown in fig. 1 to 3, the first sealing layer 5 is provided with two high-temperature resistant asbestos-free gaskets which are respectively embedded in the opposite surfaces of the valve body 1 and the valve seat 2; the high-temperature resistant asbestos-free gasket is tightly attached to the valve plate 3 and used for scraping media adsorbed on the surface of the valve plate 3 when the valve plate 3 acts.

As shown in fig. 1 to 3, the first sealing layer 5 is provided as two high temperature resistant paper boards, and the two high temperature resistant paper boards are respectively embedded in the opposite surfaces of the valve body 1 and the valve seat 2; the high temperature resistant cardboard pastes tight valve plate 3 and sets up for scrape off the medium that 3 surface adsorption of valve plate when valve plate 3 moves.

The sealing effect can be realized by adopting a high-temperature-resistant asbestos-free gasket or a high-temperature-resistant paperboard, and the granular media attached to the surface of the gate plate can be scraped, so that the sealing performance of the gate valve is improved.

As shown in fig. 1 to 3, the second sealing layer 4 is provided with two high temperature resistant rubber sealing rings which are respectively embedded in the opposite surfaces of the valve body 1 and the valve seat 2; the high temperature resistant rubber seal ring is arranged close to the valve plate 3. The second layer of the gate valve is sealed through the high-temperature resistant rubber sealing ring, and the sealing effect is ensured.

As shown in fig. 1 to 3, a first valve cover 13 is arranged at the lower end of the valve body 1, a cavity for accommodating the valve plate 3 is arranged in the first valve cover 13, the cavity is communicated with a gap between the valve body 1 and the valve seat 2, and the first valve cover 13 is detachably connected with the valve body 1. The upper end of the valve body 1 is detachably provided with a second valve cover 6, the telescopic assembly comprises a support 10 fixed at the upper end of a first valve cover 13 and an air cylinder 12 fixedly arranged at the upper end of the support 10, and a piston rod 11 of the air cylinder 12 penetrates through the support 10 and extends into the second valve cover 6; the upper end of the valve plate 3 extends into the second valve cover 6 and is in transmission connection with the piston rod 11.

The valve plate 3 can be protected by the first valve cover 13 and the second valve cover 6, and the sealing performance of the valve is improved, so that the valve cannot leak outwards, and vacuum is guaranteed. After long-time use, the cleaning of the medium in the gate valve can be realized by detaching the first valve cover 13 and the second valve cover 6, and the service life of the valve is further prolonged. The first valve cover 13 and the second valve cover 6 can be fixedly connected with the valve body 1 through bolts, and the two first valve covers 13 and the two second valve covers 6 can also be fixedly connected through bolts. The motion of valve plate 3 drives piston rod 11 through cylinder 12 and removes to drive valve plate 3 and remove, because have the cavity that holds valve plate 3 in the first valve gap 13, consequently when cylinder 12 promoted valve plate 3 and removed to first valve gap 13 in, the valve is in the closed condition, and when valve plate 3 left first valve gap 13, the valve was in the open mode.

As shown in fig. 1 to 3, in order to prevent the medium from entering the normal chamber, the valve plate 3 is provided with a diversion hole corresponding to the through hole, the size of the diversion hole is the same as that of the through hole, a full-pass flow channel is formed, the valve does not have a blocking phenomenon, and the service life of the sealing surface of the valve is longer. The surface of the valve plate 3 is plated with hard chromium or subjected to ion nitriding treatment, so that the flashboard is more wear-resistant, and the service life of a sealing surface is prolonged.

Further, the valve seat 2 can be selected to be metal hard seal or soft seal according to the requirements of media and working conditions, the inner ring of the valve seat 2 is of a metal structure or a rubber structure or a PTFE plastic structure, and the rubber structure can be ethylene propylene diene monomer or nitrile butadiene rubber.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. The utility model provides a through type totally enclosed push-pull valve which characterized in that includes: the valve comprises a valve body, a valve seat, a valve plate and a telescopic assembly; wherein,

the valve body is arranged on the valve seat, through holes for medium circulation are formed in the valve body and the valve seat, and a gap for the valve plate to linearly act to close or open the through holes is formed between the valve body and the valve seat;

the telescopic assembly is arranged at the upper end of the valve body, and the output end of the telescopic assembly is fixedly connected with the upper end of the valve plate;

the valve comprises a valve body and a valve seat, and is characterized in that a first sealing layer and a second sealing layer are sequentially arranged on the opposite surfaces of the valve body and the valve seat from inside to outside, and the first sealing layer and the second sealing layer are located on the two sides of the valve plate and are hermetically arranged on the side surfaces of the valve plate.

2. The through type full sealing gate valve according to claim 1, wherein the valve body and the inner ring of the valve seat are both arranged in close proximity to the valve plate for scraping off media adsorbed on the surface of the valve plate when the valve plate is actuated.

3. The penetration type full-sealing gate valve as claimed in claim 2, wherein the first sealing layer is provided with high-temperature resistant asbestos-free gaskets, and the high-temperature resistant asbestos-free gaskets are provided in two and embedded in the opposite surfaces of the valve body and the valve seat respectively;

the high-temperature-resistant asbestos-free gasket is tightly attached to the valve plate and used for scraping media adsorbed on the surface of the valve plate when the valve plate acts.

4. The through type full-sealing gate valve according to claim 2, wherein the first sealing layer is provided with high temperature resistant paperboards, and the high temperature resistant paperboards are provided in two and are respectively embedded in the opposite surfaces of the valve body and the valve seat;

the high-temperature-resistant paperboard is tightly attached to the valve plate and used for scraping media adsorbed on the surface of the valve plate when the valve plate acts.

5. The penetration type full-sealing gate valve as claimed in any one of claims 1 to 4, wherein the second sealing layer is provided with high-temperature-resistant rubber sealing rings which are provided in two and are respectively embedded on the opposite surfaces of the valve body and the valve seat; the high-temperature resistant rubber sealing ring is tightly attached to the valve plate.

6. The through type full sealing gate valve according to claim 5, wherein a first valve cover is arranged at the lower end of the valve body, a cavity for accommodating a valve plate is formed in the first valve cover, the cavity is communicated with a gap between the valve body and a valve seat, and the first valve cover is detachably connected with the valve body.

7. The through type full-sealing gate valve according to claim 6, wherein a second valve cover is detachably arranged at the upper end of the valve body, the telescopic assembly comprises a support fixed at the upper end of the first valve cover, and a cylinder fixed at the upper end of the support, and a piston rod of the cylinder penetrates through the support and extends into the second valve cover; the upper end of the valve plate extends into the second valve cover and is in transmission connection with the piston rod.

8. The through type full-sealing gate valve according to claim 5, wherein a flow guide hole corresponding to the through hole is formed in the valve plate.

9. The through-penetrating, fully sealed gate valve of claim 8, wherein the surface of the valve plate is hard chrome plated or ion nitrided.

10. The through full seal gate valve according to claim 9, wherein the inner ring of the valve seat is of metal construction or rubber construction or PTFE plastic construction.