CN213206620U

CN213206620U - Slide plate gate valve for severe working conditions

Info

Publication number: CN213206620U
Application number: CN202022005803.XU
Authority: CN
Inventors: 贾金光; 唐大建; 余恩琦; 蔡文聪; 刘伟; 余乐棉; 宋佳
Original assignee: ZHEJIANG LIANDA VALVE CO Ltd
Current assignee: ZHEJIANG LIANDA VALVE CO Ltd
Priority date: 2020-09-14
Filing date: 2020-09-14
Publication date: 2021-05-14
Anticipated expiration: 2030-09-14

Abstract

The utility model relates to a valve, in particular to slide gate valve for harsh operating mode. Including the valve body, the valve gap of being connected with the valve body, locate the valve rod of valve gap top and the executor of being connected with the valve rod, be equipped with two parallel arrangement's splint in the valve body, be equipped with medium circulation entry and medium circulation export on the splint, be equipped with the slide of being connected with the valve rod in the splint, be equipped with on the slide and can enter the flow guide hole that the export switched on with medium circulation and medium circulation, the both sides of slide are equipped with the closing plate, are equipped with between slide and the closing plate and impel closing plate and splint conflict sealed elastic component. The utility model provides a funnel slide gate valve for harsh operating mode, its leakproofness is reliable, and long service life has dustproof and sweeps the function, can effectually prevent that the medium from piling up and the high temperature locking phenomenon, safe and reliable at the valve pocket.

Description

Slide plate gate valve for severe working conditions

Technical Field

The utility model relates to a valve, in particular to slide gate valve for harsh operating mode.

Background

In the petroleum refining industry, the valves used in the working conditions of heavy oil and residual oil medium containing solid particle catalysts have the problems of high-temperature jamming, easy pulling damage of sealing surfaces, easy deposition of impurities at the lower end of a middle cavity of the valves, incapability of normally closing the valves and the like. In the working conditions of media such as coal water slurry, black water, grey water and the like in the coal chemical industry and the working condition of cutting off polypropylene powder in the polysilicon industry, the problems of medium coking of a cavity in a valve, easy erosion of a sealing surface and the like often occur.

According to investigation, the working conditions such as the prior powder or slurry containing solid particles are mostly plate gate valves and slide plate valves, but the working conditions all have some use problems. For the gate valve, when being used for operating mode such as powder or the thick liquids that contain the solid particle, because the gate valve is in the open mode (the structure that does not take the water conservancy diversion hole) or the switch in-process (the structure that takes the water conservancy diversion hole), the medium gets into the valve lumen easily, causes the valve lumen material to pile up or the lumen medium condenses easily, causes the unable problem of opening and shutting of valve. When the medium is accumulated in the middle cavity, a user needs to stop and disassemble the valve for cleaning, so that manpower and material resources are wasted, and the production is influenced. Even if the valve is provided with the sewage draining hole, the medium is not easy to concentrate at the sewage draining hole and is difficult to wash clean. Meanwhile, the sealing surface between the valve seat and the valve plate of the gate valve is narrow, and sealing failure can be caused when the sealing surface is damaged a little, so that the service life is short; for the sliding plate valve, although the sealing generated between the clamping block and the sliding plate of the sliding plate valve can prevent solid particle media or impurities from entering the cavity of the valve, when the valve is closed, the spring is difficult to provide enough minimum sealing pressure to realize good sealing of gas or liquid media due to the fact that the sealing surface between the clamping block and the sliding plate is too wide. Meanwhile, the phenomenon that the valve internal part is heated and expanded to cause locking of the valve can occur in the conventional sliding plate valve at high temperature.

Through the above analysis of advantages and disadvantages of the gate valve and the slide plate valve, the invention combines the structural advantages of the slide plate valve and the gate valve, and provides the funnel slide plate gate valve for harsh working conditions, which simultaneously solves the problem of inapplicability of the gate valve and the slide plate valve under some special harsh working conditions.

Disclosure of Invention

In order to overcome the not enough of background art, the utility model provides a funnel slide gate valve for harsh operating mode, its leakproofness is reliable, and long service life has dustproof and sweeps the function, can effectually prevent that the medium from piling up and the high temperature phenomenon of locking, safe and reliable at the valve pocket.

The utility model adopts the technical proposal that: the utility model provides a slide gate valve for harsh operating mode, including the valve body, the valve gap of being connected with the valve body, locate the valve rod of valve gap top and the executor of being connected with the valve rod, be equipped with two parallel arrangement's splint in the valve body, be equipped with medium circulation entry and medium circulation export on the splint, be equipped with the slide of being connected with the valve rod in the splint, be equipped with the water conservancy diversion hole that can switch on with medium circulation entry and medium circulation export on the slide, the both sides of slide are equipped with the closing plate, are equipped with between slide and the closing plate and make closing plate and splint conflict sealed elastic.

Preferably, the elastic component comprises a spring, grooves are respectively arranged on two sides of the sliding plate, the sealing plate is arranged in the grooves, at least one spring hole communicated with the grooves is formed in the sliding plate, the spring is arranged in the spring hole, and two ends of the spring are respectively connected with the sealing plates on two sides of the sliding plate.

Preferably, the slide board including preceding slide board and back slide board, preceding slide board and the downthehole step that is equipped with respectively of water conservancy diversion of back slide board, preceding slide board and the downthehole bellows that both ends and step conflict of water conservancy diversion of back slide board are equipped with.

Preferably, the outer surface of the corrugated pipe is provided with a scouring-resistant dustproof sleeve.

Preferably, the bottom of the valve body and the valve cover are respectively provided with a cleaning opening, and the cleaning opening is provided with a manual gate valve.

Preferably, the bottom of the valve body is funnel-shaped.

Preferably, the end face of the clamping plate abutting against the sealing plate is provided with a concave groove, a valve seat abutting against the sealing plate is arranged in the concave groove, and a second elastic assembly for urging the valve seat to abut against the sealing plate is arranged between the valve seat and the clamping plate.

Preferably, the second elastic component comprises a second spring, the concave groove is provided with a notch towards the side wall of the other end of the sealing plate, a push ring is arranged between the clamping plate and the valve seat, one end of the spring in the notch is abutted against the clamping plate, and the other end of the spring is abutted against the push ring.

Preferably, the section of the push ring is L-shaped, one end of the valve seat is abutted to the sealing plate through the sealing ring, the other end of the valve seat is arranged in the push ring and abutted to the push ring, and the sealing ring is arranged between the push ring and the valve seat.

Preferably, the section of the sealing ring is trapezoidal.

The utility model has the advantages that: under the effect of executor, the switch of slide upper and lower slip control valve of slide between two splint, two slides tightly laminate splint under the elastic thrust effect of spring and bellows in the switching process, make slider and splint have the contact surface of broad all the time to form sealedly, prevent that solid graininess's medium or impurity in the medium from getting into the valve lumen and causing the lumen material to pile up. When the valve is closed, the spring between the two sealing plates provides a pre-tightening sealing specific pressure to realize low-pressure sealing. When the pressure of the valve is increased, the pressure difference formed behind the front valve of the valve can generate medium thrust on the sealing plate, and the rear sealing plate and the rear sliding plate are tightly combined under the combined action of the spring thrust and the medium thrust, so that a main sealing pair with reliable sealing is formed. Through the setting, the utility model discloses a product can easily realize the zero leakage of gas or liquid medium because of its unique sealed structure of closing plate, and overall structure is simple, and its leakproofness is reliable, and long service life has dustproof and sweeps the function, can effectually prevent that the medium from piling up and the high temperature locking phenomenon, safe and reliable at the valve pocket.

The embodiments of the present invention will be further explained with reference to the drawings.

Drawings

Fig. 1 is a cross-sectional view of the present invention;

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

FIG. 3 is a partial view of the present invention;

FIG. 4 is a cross-sectional view of the present invention with a second resilient component added;

fig. 5 is an enlarged view of the portion I of fig. 4 according to the present invention.

Detailed Description

As shown in fig. 1-5, the technical solution adopted by the present invention is: the utility model provides a slide gate valve for harsh operating mode, including valve body 1, the valve gap 2 of being connected with valve body 1, locate valve rod 3 of valve gap 2 top and the executor 4 of being connected with valve rod 3, be equipped with two parallel arrangement's splint 5 in the valve body 1, be equipped with medium circulation entry 51 and medium circulation export 52 on the splint 5, be equipped with the slide 6 of being connected with valve rod 3 in the splint 5, be equipped with the water conservancy diversion hole 61 that can switch on with medium circulation entry 51 and medium circulation export 52 on the slide 6, the both sides of slide 6 are equipped with closing plate 7, are equipped with between slide 6 and the closing plate 7 and make closing plate 6 and splint 7 conflict sealed elastic component 8. In the above scheme, under the effect of the actuator 4, the slide plate 6 clamped between the two clamp plates 5 slides up and down to control the opening and closing of the valve, the two slide plates 6 tightly fit the clamp plates 5 under the elastic thrust action of the elastic component 8 in the opening and closing process, so that the slide plate 6 and the clamp plates 5 always have wider contact surfaces, thereby forming sealing and preventing solid granular media or impurities in the media from entering the middle cavity of the valve to cause the accumulation of middle cavity materials. When the valve is closed, the elastic component 8 between the two sealing plates 7 provides pre-tightening sealing specific pressure to realize low-pressure sealing. When the pressure of the valve is increased, the pressure difference formed behind the front valve of the valve can generate medium thrust on the sealing plate, and the rear sealing plate (the sealing plate facing the medium circulation outlet is the rear sealing plate) and the rear sliding plate (the sliding plate facing the medium circulation outlet is the rear sliding plate) are tightly combined under the combined action of the elastic thrust and the medium thrust, so that a main sealing pair with reliable sealing is formed. Through the setting, the utility model discloses a product can easily realize the zero leakage of gas or liquid medium because of its unique sealed structure of closing plate, and overall structure is simple, and its leakproofness is reliable, and long service life can effectually prevent that the medium from piling up and the high temperature locking phenomenon, safe and reliable at the valve pocket.

The elastic component 8 comprises a spring 81, grooves 62 are respectively arranged on two sides of the sliding plate 6, the sealing plate 7 is arranged in the grooves 62, at least one spring hole 63 communicated with the grooves 62 is arranged on the sliding plate 6, the spring 81 is arranged in the spring hole 63, and two ends of the spring 81 are respectively connected with the sealing plates 7 on two sides of the sliding plate 6. In the above scheme, elastic component 8 is spring 81, two slide 6 parallel arrangement, and spring 81 passes two slide 6's spring hole 63, and the closing plate of spring 8 both ends and 6 both sides of slide is contradicted, and spring 8's thrust makes closing plate 7 tightly contradict with splint 5 like this, realizes sealedly, also prevents simultaneously that the material from getting into the lumen, prevents that the valve from locking because of the material blocks up.

The sliding plate 6 comprises a front sliding plate 64 and a rear sliding plate 65, steps 66 are respectively arranged in the flow guide holes of the front sliding plate 64 and the rear sliding plate 65, and corrugated pipes 67 with two ends abutting against the steps 66 are arranged in the flow guide holes of the front sliding plate 64 and the rear sliding plate 65. In the above scheme, the bellows 67 and the spring 81 have the same function and have the same elasticity, the bellows 67 is arranged at the gap between the front sliding plate 64 and the rear sliding plate 65 for sealing, and the bellows 67 in a compressed state can provide sealing force for the sealing between the sliding plate 6 and the clamping plate 5 and can also form reliable sealing between the front sliding plate 64 and the rear sliding plate 65.

The outer surface of the corrugated pipe 67 is provided with a scouring-resistant dustproof sleeve 68. A scouring-resistant dustproof sleeve 68 with a protection function is arranged outside the corrugated pipe 67, so that the corrugated pipe is prevented from being directly scoured by media, and the service life of the corrugated pipe is prolonged.

The bottom of the valve body 1 and the valve cover 2 are respectively provided with a cleaning opening 11, and a manual gate valve 12 is arranged at the cleaning opening 11. The bottom of the valve body 1 and the valve cover 2 are provided with cleaning ports 11, so that a user can clean the valve cavity on line without detaching the valve during inspection and maintenance.

The bottom of the valve body 1 is funnel-shaped. The bottom of the valve cavity adopts a funnel structure, so that the medium entering the valve cavity cannot be dispersed around but intensively slides down to the bottom of the funnel, and is convenient to discharge.

The end face of the clamping plate 5 abutting against the sealing plate 7 is provided with a concave groove 9, a valve seat 91 abutting against the sealing plate 7 is arranged in the concave groove 9, and a second elastic assembly for urging the valve seat 91 to abut against the sealing plate 7 is arranged between the valve seat 91 and the clamping plate 5. The second elastic component comprises a second spring 92, the side wall of the concave groove 9, facing the other end of the sealing plate 7, is provided with a notch 93, a push ring 94 is arranged between the clamping plate 5 and the valve seat 91, the second spring 92 is arranged in the notch 93, one end of the second spring is abutted against the clamping plate 5, and the other end of the second spring is abutted against the push ring 94. To some volatile media, when the temperature rose, the medium gasifies easily for the abnormal rising of lumen pressure causes the danger of valve locking or valve explosion, to this kind of condition, still set up disk seat 91 in splint 5, makes closing plate 7 sealed with disk seat 91, and has set up second spring 93 between splint 5 and disk seat 91, when the lumen pressure rose unusually, disk seat 91 can overcome the thrust of second spring 93 on disk seat 91 under the effect of lumen pressure, pushed away disk seat 91 from closing plate 7, thereby the pressure release. When the pressure of the middle cavity is normal, the thrust of the second spring 93 can promote the valve seat 91 to be always abutted against and sealed with the sealing plate 7, the valve seat 91 can be independently disassembled, and when the sealing surface of the valve seat 91 is damaged, the valve seat 91 is easy to disassemble for maintenance.

The section of the push ring 94 is L-shaped, one end of the valve seat 91 is abutted against the sealing plate 7 through a sealing ring 95, the other end of the valve seat is arranged in the push ring 94 and abutted against the push ring 94, and a sealing ring 96 is arranged between the push ring 94 and the valve seat 91. The push ring 94 is used to push the valve, which provides a more stable arrangement.

The cross section of the sealing ring 96 is trapezoidal.

The utility model discloses in, splint 5 is for having the integral flat board of guide effect and sealed effect, and forms the sealed face of broad between the closing plate, even partial seal face receives the damage, and peripheral face can continue to play sealed effect.

The utility model discloses a slide 6 adopts the double-gate structure, reserves between two slides and has the expansion gap, can prevent that valve internals from producing the thermal energy and causing the valve locking problem under the high temperature operating mode, and the spring that sets up between two slides struts two slides, makes slide and splint contact production all the time sealed, can prevent that solid medium or impurity from getting into the valve pocket and causing the valve pocket material to pile up the valve card and die.

The utility model discloses in, splint 5's runner position is the right angle, like the scraper, when the shearing movement was done with the slide to splint when valve switch, can scrape the scale deposit that glues on the slide, also can avoid the scale deposit to block up the lumen like this, plays the additional action to preventing that the valve from locking.

The utility model discloses in, set up filler 31 between valve gap 2 and valve rod 3 and be used for sealing, filler 31 is fixed through packing plate 32, and packing plate 32 passes through screw 33 to be fixed on valve gap 2, has set up dish spring 34 between packing plate 32 and screw 33, produces when replacing the change because of medium temperature, and the elastic potential energy can be released to dish spring 34, lasts and provides sealing force for filler 31, makes filler 31 have good leakproofness all the time.

The utility model discloses a valve body runner adopts supersonic speed spraying (HOVF) carbide technique with valve internals, strengthens the wear resistance of valve.

The skilled person should understand that: although the present invention has been described in terms of the above embodiments, the inventive concepts are not limited thereto, and any modification that utilizes the inventive concepts will be within the scope of the patent claims.

Claims

1. The utility model provides a slide gate valve for harsh operating mode, including the valve body, the valve gap of being connected with the valve body, locate the valve rod of valve gap top and the executor of being connected with the valve rod, be equipped with two parallel arrangement's splint in the valve body, be equipped with medium circulation entry and medium circulation export on the splint, be equipped with the slide of being connected with the valve rod between two splint, be equipped with on the slide can with the medium circulation entry and the water conservancy diversion hole that the medium circulation export switched on, its characterized in that: the both sides of slide are equipped with the closing plate, are equipped with between slide and the closing plate and impel closing plate and splint to contradict sealed elastic component.

2. A slide gate valve for harsh operating conditions according to claim 1, wherein: the elastic component comprises a spring, grooves are respectively arranged on two sides of the sliding plate, the sealing plate is arranged in the grooves, at least one spring hole communicated with the grooves is formed in the sliding plate, the spring is arranged in the spring hole, and two ends of the spring are respectively connected with the sealing plates on two sides of the sliding plate.

3. A slide gate valve for harsh operating conditions according to claim 2, wherein: the slide including preceding slide and back slide, preceding slide and the downthehole step that is equipped with respectively of water conservancy diversion of back slide, the downthehole bellows that both ends and step are contradicted that is equipped with of water conservancy diversion of preceding slide and back slide.

4. A slide gate valve for harsh operating conditions according to claim 3, wherein: and the outer surface of the corrugated pipe is provided with a scouring-resistant dustproof sleeve.

5. A slide gate valve for harsh conditions according to claim 1 or 2 or 3 or 4, wherein: the bottom of valve body and be equipped with the washing mouth respectively on the valve gap, washing mouth department is equipped with manual gate valve.

6. A slide gate valve for harsh working conditions according to claim 5, wherein: the bottom of the valve body is funnel-shaped.

7. A slide gate valve for harsh conditions according to claim 1 or 2 or 3 or 4, wherein: the end face of the clamping plate, which is abutted against the sealing plate, is provided with a concave groove, a valve seat which is abutted against the sealing plate is arranged in the concave groove, and a second elastic assembly which is used for urging the valve seat to be abutted against the sealing plate is arranged between the valve seat and the clamping plate.

8. A slide gate valve for harsh operating conditions according to claim 7, wherein: the second elastic component comprises a second spring, the side wall of the concave groove, facing the other end of the sealing plate, is provided with a notch, a push ring is arranged between the clamping plate and the valve seat, one end of the spring in the notch is abutted against the clamping plate, and the other end of the spring is abutted against the push ring.

9. A slide gate valve for harsh operating conditions according to claim 8, wherein: the cross-section of the push ring is L-shaped, one end of the valve seat is abutted to the sealing plate through the sealing ring, the other end of the valve seat is arranged in the push ring and abutted to the push ring, and the sealing ring is arranged between the push ring and the valve seat.

10. A slide gate valve for harsh operating conditions according to claim 9, wherein: the section of the sealing ring is trapezoidal.