CN110792792A

CN110792792A - Valve with double sealing effect

Info

Publication number: CN110792792A
Application number: CN201911126895.2A
Authority: CN
Inventors: 樊瑞庆
Original assignee: Sheng Fu (tianjin) Fluid Automatic Control Equipment Co Ltd
Current assignee: Sheng Fu (tianjin) Fluid Automatic Control Equipment Co Ltd
Priority date: 2019-11-18
Filing date: 2019-11-18
Publication date: 2020-02-14
Anticipated expiration: 2039-11-18
Also published as: CN110792792B

Abstract

The invention discloses a valve with a double-sealing effect, which belongs to the technical field of valves and comprises a valve body, wherein a valve cover is welded on the outer surface wall of the valve body, a valve rod is arranged on the upper surface of the valve cover in a threaded manner, the top end of the valve rod is fixedly connected with the lower surface of a fixed seat a, the upper surface of the fixed seat a is attached to the lower surface of a fixed seat b, an inserted rod is fixedly arranged on the upper surface of the fixed seat a, the inserted rod penetrates through an insertion hole formed in the fixed seat b and extends to the upper side of the fixed seat b, threads are arranged on the outer surface of the inserted rod, and a nut is fixedly arranged on the; go up disk seat downstream and make the closing plate downstream under the elastic action of spring when the disk seat is connected down, and then make the inserted block b on the closing plate insert slot b in, utilize closing plate and backup pad and go up disk seat and disk seat down and carry out double sealing, it is sealed effectual, effectively guarantee the normal use of valve.

Description

Valve with double sealing effect

Technical Field

The invention belongs to the technical field of valves, and particularly relates to a valve with a double-sealing effect.

Background

The valves are control parts in fluid conveying systems, have functions of stopping, adjusting, guiding, preventing counter flow, stabilizing pressure, shunting or overflowing and relieving pressure, and the like, are used for valves of fluid control systems, from the simplest stop valves to various valves used in extremely complex automatic control systems, have quite various varieties and specifications, 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, and are divided into cast iron valves, cast steel valves, stainless steel valves, chromium molybdenum vanadium steel valves, dual-phase steel valves, plastic valves, nonstandard customized valves and the like according to materials.

The existing valve is sealed only by the valve seat, the sealing performance is reduced due to the fact that the existing valve is easily influenced when the single-layer sealing is carried out, normal use of the valve is further influenced, meanwhile, a valve hand wheel is easily touched by the outside and rotated, and then a valve rod is driven to move, so that the valve is easily opened or closed by mistake, and inconvenience is brought to use of people.

Disclosure of Invention

The present invention is directed to a valve with dual sealing effect to solve the above problems in the prior art.

In order to achieve the purpose, the invention provides the following technical scheme: a valve with double sealing effects comprises a valve body, wherein a valve cover is welded on the outer surface wall of the valve body, a valve rod is installed on the upper surface of the valve cover in a threaded mode, the top end of the valve rod is fixedly connected with the lower surface of a fixing seat a, the upper surface of the fixing seat a is attached to the lower surface of a fixing seat b, an insertion rod is fixedly installed on the upper surface of the fixing seat a, penetrates through a jack formed in the fixing seat b and extends to the position above the fixing seat b, threads are arranged on the outer surface of the insertion rod, a nut is fixedly installed on the outer surface of the insertion rod through the threads, the lower surface of the nut is attached to the upper surface of the fixing seat b, a hand wheel is welded at the top end of the fixing seat b, an upper valve seat is fixedly installed at the bottom end of the valve rod, a lower valve seat is fixedly installed at a position where, the utility model discloses a valve structure, including valve gap, backup pad, passageway a, closing plate, valve gap, passageway b, the lower extreme of passageway b, passageway a and runner are linked together, passageway b's inside symmetry has been seted up to the backup pad corresponds the runner has been seted up to the one side of the cross section of valve body, passageway a has been seted up to the exterior wall of backup pad, passageway b has been seted up to the inside symmetry of lateral wall of valve gap, and the lower extreme of passageway b run through in the lower surface of valve gap, passageway b, passageway a and runner are linked together, passageway b's inside is provided with the closing plate, the last fixed surface of closing plate installs the fly leaf, the last fixed surface of fly leaf installs the spring, the top of spring is connected with the.

Adopt above-mentioned scheme, make the closing plate downstream under the elastic action of spring when being connected through last valve seat downstream and lower disk seat, and then make inserted block b on the closing plate insert in slot b, utilize closing plate and backup pad and go up the disk seat and carry out double sealing with lower disk seat, it is sealed effectual, effectively guarantee the normal use of valve, utilize the inserted bar on the fixing base a to insert in the jack on the fixing base b, and utilize the screw thread to twist the nut and make and connect stably between fixing base a and the fixing base b, and then can install the hand wheel when needing the operation valve, pull down the hand wheel when not needing the operation, effectively avoid the hand wheel because external touching pivoted problem, moreover, the steam generator is simple in structure, and convenient operation.

As a preferred embodiment, an insert a is fixedly mounted on the lower surface of the upper valve seat, a slot a is formed in the upper surface of the lower valve seat, and the insert a is matched with the slot a for use.

By adopting the scheme, the inserting block a can be inserted into the inserting groove a on the lower valve seat when the upper valve seat moves downwards by utilizing the matching of the inserting block a and the inserting groove a, so that the connection between the upper valve seat and the lower valve seat is more stable, and the effect of resisting the impact force of a medium is improved.

As a preferred embodiment, an insertion block b is fixedly mounted on the lower surface of the sealing plate, a slot b is formed in the lower surface of the inner side wall of the flow channel, and the insertion block b and the slot b are used in a matched manner.

By adopting the scheme, the sealing plate can be more stably connected with the supporting plate when the sealing plate slides downwards by inserting the inserting block b into the inserting slot b, and the impact force of a fluid medium is effectively resisted.

As a preferred embodiment, the number of the springs is four, and four springs are installed in two pairs in two channels b, the springs are sleeved on the outer surface of the telescopic rod, and two ends of the telescopic rod are respectively fixedly connected with the inner side walls of the channels b and the upper surface of the movable plate.

Adopt above-mentioned scheme, the elastic force who utilizes the spring makes the closing plate have a decurrent effort, and then the closing plate can follow the valve seat and move down together when making last disk seat downstream equally, and then has realized multiple sealed effect, utilizes the telescopic link to support the spring for the closing plate can not appear rocking and more stable reciprocating the in-process.

In a preferred embodiment, rubber gaskets are fixedly mounted on the left and right side surfaces and the lower surface of the sealing plate and the outer surface and the lower surface of the upper valve seat.

By adopting the scheme, the rubber sealing rings on the left side surface and the right side surface of the sealing plate enable fluid media not to enter the channel b through the channel a, the rubber sealing rings on the outer surface of the upper valve seat prevent the fluid media from entering the valve cover on the upper valve seat, and the rubber sealing rings on the lower surface of the sealing plate and the lower surface of the upper valve seat enable the sealing performance of the gap between the sealing plate and the supporting plate and the gap between the upper valve seat and the lower valve seat to be better, so that the fluid media are prevented from overflowing.

In a preferred embodiment, the number of the insertion rods is two, and the two insertion rods are respectively located at the left and right sides of the upper surface of the fixing seat a.

Adopt above-mentioned scheme, utilize two inserted bars to insert respectively in the jack to utilize the nut to twist up and make and connect more stably between fixing base a and the fixing base b.

Compared with the prior art, the invention has the beneficial effects that:

according to the valve with the double sealing effect, the supporting plate, the sealing plate, the spring, the upper valve seat and the lower valve seat are arranged, when the upper valve seat moves downwards and is connected with the lower valve seat, the sealing plate moves downwards under the elastic action of the spring, the inserting block b on the sealing plate is further inserted into the inserting groove b, double sealing is performed by the sealing plate, the supporting plate, the upper valve seat and the lower valve seat, the sealing effect is good, and the normal use of the valve is effectively guaranteed;

this valve that possesses dual-seal effect is through setting up fixing base a, fixing base b, inserted bar and nut, utilizes the inserted bar on the fixing base a to insert in the jack on the fixing base b to utilize the screw thread to twist up the nut and make and connect stably between fixing base a and the fixing base b, and then can install the hand wheel when needs operation valve, pull down the hand wheel when not needing the operation, effectively avoid the hand wheel because external touching pivoted problem, simple structure, convenient operation.

Drawings

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

FIG. 2 is a schematic left-side sectional view of the sealing plate according to the present invention;

FIG. 3 is a schematic structural view of a fixing base a according to the present invention;

FIG. 4 is an enlarged schematic view of the invention at A;

FIG. 5 is an enlarged schematic view of the present invention at B.

In the figure: 1. a valve body; 2. a valve cover; 3. a valve stem; 4. a fixed seat a; 5. a fixed seat b; 6. inserting a rod; 7. a jack; 8. a nut; 9. a hand wheel; 10. an upper valve seat; 11. an insert block a; 12. a lower valve seat; 13. a slot a; 14. a support plate; 15. a flow channel; 16. a channel a; 17. a channel b; 18. a sealing plate; 19. a movable plate; 20. a spring; 21. pressing a plate; 22. an insert block b; 23. a slot b; 24. a telescopic rod; 25. a rubber gasket is provided.

Detailed Description

The present invention will be further described with reference to the following examples.

The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention. The conditions in the embodiments can be further adjusted according to specific conditions, and simple modifications of the method of the present invention based on the concept of the present invention are within the scope of the claimed invention.

Referring to fig. 1-5, the present invention provides a valve with a double sealing effect, including a valve body 1, a valve cap 2 is welded to an outer surface wall of the valve body 1, a valve rod 3 is installed on an upper surface of the valve cap 2 through a thread, a top end of the valve rod 3 is fixedly connected to a lower surface of a fixing seat a4, an upper surface of a fixing seat a4 is attached to a lower surface of a fixing seat b5, an insert rod 6 is fixedly installed on an upper surface of the fixing seat a4, the number of the insert rods 6 is two, and the two insert rods 6 are respectively located at left and right sides of the upper surface of the fixing seat a4 (see fig. 1, 3 and; connect fixing base a4 and fixing base b5 in step through setting up two inserted bars 6 for it is more stable to be connected between fixing base a4 and the fixing base b5, utilizes nut 8 to further strengthen fixedly simultaneously, and fixed effect is better.

The inserted link 6 penetrates through an insertion hole 7 formed in the fixed seat b5 and extends to the position above the fixed seat b5, threads are arranged on the outer surface of the inserted link 6, a nut 8 is fixedly mounted on the outer surface of the inserted link 6 through the threads, the lower surface of the nut 8 is attached to the upper surface of the fixed seat b5, a hand wheel 9 is welded at the top end of the fixed seat b5, an upper valve seat 10 is fixedly mounted at the bottom end of the valve rod 3, an insertion block a11 is fixedly mounted on the lower surface of the upper valve seat 10, a slot a13 is formed in the upper surface of the lower valve seat 12, and the insertion block a11 is matched with the slot a; when the upper valve seat 10 moves downwards under the action of the valve rod 3, the insert block a11 can be driven to move downwards, and then the insert block a11 is inserted into the insert groove a13, so that the upper valve seat 10 and the lower valve seat 12 are more stable when being connected together.

A lower valve seat 12 is fixedly installed at a position, corresponding to the upper valve seat 10, of the inner side wall of the valve body 1, supporting plates 14 are fixedly installed at the left side and the right side, corresponding to the lower valve seat 12, of the inner side wall of the valve body 1, one side, corresponding to the cross section of the valve body 1, of each supporting plate 14 is provided with a flow channel 15, the outer wall of each supporting plate 14 is provided with a channel a16, the inner side wall of the valve cover 2 is symmetrically provided with a channel b17, the lower end of the channel b17 penetrates through the lower surface of the valve cover 2, the channel b17 and the channel a16 are communicated with the flow channel 15, a sealing plate 18 is arranged inside the channel b17, an insert block b22 is fixedly installed on the lower surface of the sealing plate 18, the; when the sealing plate 18 moves downwards under the elastic action of the spring 20, the insertion block b22 is driven to move downwards to be inserted into the insertion slot b23, so that the connection between the sealing plate 18 and the supporting plate 14 is more stable, and the effect of resisting fluid media is better.

A movable plate 19 is fixedly mounted on the upper surface of the sealing plate 18, and rubber gaskets 25 (see fig. 1 and 5) are fixedly mounted on the left and right side surfaces and the lower surface of the sealing plate 18 and the outer surface and the lower surface of the upper valve seat 10; the rubber sealing rings on the left side surface and the right side surface of the sealing plate 18 enable fluid media not to enter the channel b17 through the channel a16, the rubber sealing rings on the outer surface of the upper valve seat 10 prevent the fluid media from entering the valve cover 2 on the upper valve seat 10, the rubber sealing rings on the lower surface of the sealing plate 18 and the lower surface of the upper valve seat 10 enable the sealing performance of a gap between the sealing plate 18 and the supporting plate 14 and a gap between the upper valve seat 10 and the lower valve seat 12 to be better, overflow of the fluid media is avoided, and a good sealing effect is guaranteed.

The springs 20 are fixedly mounted on the upper surface of the movable plate 19, the number of the springs 20 is four, the four springs 20 are mounted in the two channels b17 in pairs, the springs 20 are sleeved on the outer surface of the telescopic rod 24, and two ends of the telescopic rod 24 are respectively fixedly connected with the inner side wall of the channel b17 and the upper surface of the movable plate 19 (see fig. 1, 2 and 5); two liang support two closing plates 18 through setting up four springs 20, it is better to the supporting effect of closing plate 18, utilize telescopic link 24 to support spring 20 for it is difficult for rocking and more stable when spring 20 drives backup pad 14 and reciprocates.

The top end of the spring 20 is fixedly connected with the upper surface of the inner side wall of the channel b17, the pressure plate 21 is fixedly installed on the right side surface of the movable plate 19, the pressure plate 21 passes through the channel c formed in the inner side wall of the valve cover 2 and extends into the valve cover 2, and the lower surface of the pressure plate 21 is attached to the upper surface of the upper valve seat 10.

When the valve is used, the hand wheel 9 is rotated to drive the fixed seat b5 to rotate when the valve is closed, the valve rod 3 is driven to rotate under the action of the fixed seat a4 and the fixed seat b5, the upper valve seat 10 is driven to move downwards, the upper valve seat 10 drives the insert block a11 to move downwards and insert into the slot a13 on the lower valve seat 12, at the moment, the upper valve seat 10 does not limit the pressure plate 21 any more, the spring 20 is restored under the elastic action of the spring 20 to drive the sealing plate 18 to move downwards, the sealing plate 18 drives the insert block b22 to move downwards and insert into the slot b23, the sealing plate 18, the support plate 14, the upper valve seat 10 and the lower valve seat 12 are utilized to achieve double sealing effect, when the valve needs to be opened, the hand wheel 9 is rotated reversely, the upper valve seat 10 moves upwards and is separated from the lower valve seat 12, meanwhile, the upper valve seat 10 drives the pressure plate 21 to move downwards, and then the circulation of valve is guaranteed, when the operation is not needed, the nut 8 is unscrewed to contact and fix the fixing seat a4 and the fixing seat b5, the hand wheel 9 is upwards taken down to enable the inserted rod 6 to be separated from the inserting hole 7, and when the operation is needed, the hand wheel 9 is installed again for operation.

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 invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a valve that possesses double containment effect, includes valve body (1), its characterized in that: the valve cover (2) is installed on the outer surface wall of the valve body (1) in a welded mode, a valve rod (3) is installed on the upper surface of the valve cover (2) in a threaded mode, the top end of the valve rod (3) is fixedly connected with the lower surface of a fixing seat a (4), the upper surface of the fixing seat a (4) is attached to the lower surface of a fixing seat b (5), an inserted rod (6) is installed on the upper surface of the fixing seat a (4) in a fixed mode, the inserted rod (6) penetrates through a jack (7) formed in the fixing seat b (5) and extends to the position above the fixing seat b (5), threads are arranged on the outer surface of the inserted rod (6), a nut (8) is installed on the outer surface of the inserted rod (6) in a fixed mode through the threads, the lower surface of the nut (8) is attached to the upper surface of the fixing seat b (5), a hand wheel (9) is welded to the top end, the valve comprises a valve body (1), wherein a lower valve seat (12) is fixedly mounted at a position, corresponding to an upper valve seat (10), of the inner side wall of the valve body (1), supporting plates (14) are fixedly mounted at the left side and the right side of the valve body (1) corresponding to the lower valve seat (12), a flow channel (15) is formed in one side, corresponding to the cross section of the valve body (1), of each supporting plate (14), a channel a (16) is formed in the outer wall of each supporting plate (14), channels b (17) are symmetrically formed in the inner side wall of a valve cover (2), the lower end of each channel b (17) penetrates through the lower surface of the valve cover (2), each channel b (17), each channel a (16) and each flow channel (15) are communicated, a sealing plate (18) is arranged in each channel b (17), a movable plate (19) is fixedly mounted on the upper surface of each, the top of spring (20) and the last fixed surface of passageway b (17) inside wall are connected, the right flank fixed mounting of fly leaf (19) has clamp plate (21), inside clamp plate (21) passed the passageway c that valve gap (2) inside wall was seted up and extended to valve gap (2), the lower surface of clamp plate (21) and the upper surface laminating of last disk seat (10).

2. The valve with double sealing effect according to claim 1, wherein: the lower surface fixed mounting who goes up disk seat (10) has inserted block a (11), slot a (13) have been seted up to the upper surface of lower disk seat (12), inserted block a (11) and slot a (13) cooperation are used.

3. The valve with double sealing effect according to claim 1, wherein: the lower surface fixed mounting of closing plate (18) has inserted block b (22), slot b (23) have been seted up to the lower surface of runner (15) inside wall, inserted block b (22) and slot b (23) cooperation are used.

4. The valve with double sealing effect according to claim 1, wherein: the quantity of spring (20) is four, and two liang of four springs (20) install in the inside of two passageway b (17), the surface at telescopic link (24) is established in spring (20) cover, the both ends of telescopic link (24) are connected with the upper surface fixed of the inside wall of passageway b (17) and fly leaf (19) respectively.

5. The valve with double sealing effect according to claim 1, wherein: and rubber sealing gaskets (25) are fixedly arranged on the left side surface, the right side surface and the lower surface of the sealing plate (18) and the outer surface and the lower surface of the upper valve seat (10).

6. The valve with double sealing effect according to claim 1, wherein: the number of the inserted rods (6) is two, and the two inserted rods (6) are respectively positioned at the left side and the right side of the upper surface of the fixed seat a (4).