CN112081936A - Slide plate gate valve for severe working conditions - Google Patents
Slide plate gate valve for severe working conditions Download PDFInfo
- Publication number
- CN112081936A CN112081936A CN202011023481.XA CN202011023481A CN112081936A CN 112081936 A CN112081936 A CN 112081936A CN 202011023481 A CN202011023481 A CN 202011023481A CN 112081936 A CN112081936 A CN 112081936A
- Authority
- CN
- China
- Prior art keywords
- valve
- slide
- plate
- sealing
- spring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/02—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/04—Construction of housing; Use of materials therefor of sliding valves
- F16K27/044—Construction of housing; Use of materials therefor of sliding valves slide valves with flat obturating members
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/02—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor
- F16K3/16—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with special arrangements for separating the sealing faces or for pressing them together
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/30—Details
- F16K3/314—Forms or constructions of slides; Attachment of the slide to the spindle
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K41/00—Spindle sealings
- F16K41/02—Spindle sealings with stuffing-box ; Sealing rings
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sliding Valves (AREA)
- Details Of Valves (AREA)
Abstract
The invention relates to a valve, in particular to a slide plate gate valve used in harsh working conditions. 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 invention provides a pneumatic funnel sliding plate gate valve used for harsh working conditions, which is reliable in sealing performance, long in service life, safe and reliable, has dustproof and purging functions, and can effectively prevent media from being accumulated in a valve cavity and being locked at high temperature.
Description
Technical Field
The invention relates to a valve, in particular to a slide plate gate valve used in harsh working conditions.
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 not easy 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 defects of the background art, the invention provides the pneumatic funnel sliding plate gate valve for the harsh working conditions, which has the advantages of reliable sealing performance, long service life, dustproof and purging functions, capability of effectively preventing the phenomena of medium accumulation and high-temperature locking in a valve cavity, safety and reliability.
The technical scheme adopted by the invention is as follows: 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 invention has the beneficial effects 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 arrangement, the product can easily realize zero leakage of gas or liquid medium due to the unique sealing structure of the sealing plate, has the advantages of simple overall structure, reliable sealing performance, long service life, dustproof and purging functions, can effectively prevent the phenomena of medium accumulation and high-temperature locking in the valve cavity, and is safe and reliable.
The embodiments of the present invention will be further described with reference to the accompanying drawings.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
FIG. 2 is an enlarged view of portion A of FIG. 1;
fig. 3 is an enlarged schematic view of a portion B of fig. 1.
FIG. 4 is a schematic structural view of a second elastic assembly according to an embodiment of the present invention;
FIG. 5 is an enlarged view of section I of FIG. 4 according to the present invention.
Detailed Description
As shown in fig. 1 to 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 arrangement, the product can easily realize zero leakage of gas or liquid medium due to the unique sealing structure of the sealing plate, has simple integral structure, reliable sealing performance and long service life, can effectively prevent the phenomena of medium accumulation and high-temperature locking in the valve cavity, and is safe and reliable.
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.
In the present invention, the clamping plate 5 is a one-piece flat plate having a guiding function and a sealing function, and a wide sealing surface is formed between the clamping plate and the sealing plate, so that the peripheral surface can continue to play a sealing function even if part of the sealing surface is damaged.
The sliding plate 6 of the invention adopts a double-flashboard structure, an expansion gap is reserved between the two sliding plates, the problem of locking of the valve caused by thermal expansion of the valve internals under the high-temperature working condition can be prevented, the two sliding plates are stretched by the spring arranged between the two sliding plates, the sliding plates and the clamping plates are always contacted to generate sealing, and the blockage of a material accumulation valve in the valve cavity caused by solid media or impurities entering the valve cavity can be prevented.
In the invention, the flow channel position of the clamping plate 5 is right-angled, and like a scraper, when the clamping plate and the sliding plate do shearing motion during the opening and closing of the valve, scales adhered on the sliding plate can be scraped, so that the middle cavity can be prevented from being blocked by scales, and an auxiliary effect on preventing the locking of the valve is realized.
In the invention, the packing 31 is arranged between the valve cover 2 and the valve rod 3 for sealing, the packing 31 is fixed by the packing pressing plate 32, the packing pressing plate 32 is fixed on the valve cover 2 by the screw 33, and the disc spring 34 is arranged between the packing pressing plate 32 and the screw 33, when the production is changed due to the medium temperature, the disc spring 34 can release elastic potential energy to continuously provide sealing force for the packing 31, so that the packing 31 has good sealing performance all the time.
The valve body flow channel and the valve internal parts adopt a supersonic velocity spraying (HOVF) hard alloy technology to enhance the wear resistance of the valve.
The skilled person should understand that: although the invention has been described in terms of the above specific embodiments, the inventive concept is not limited thereto and any modification applying the inventive concept is intended to be included within the scope of the patent claims.
Claims (10)
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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011023481.XA CN112081936A (en) | 2020-09-25 | 2020-09-25 | Slide plate gate valve for severe working conditions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011023481.XA CN112081936A (en) | 2020-09-25 | 2020-09-25 | Slide plate gate valve for severe working conditions |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112081936A true CN112081936A (en) | 2020-12-15 |
Family
ID=73738800
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011023481.XA Pending CN112081936A (en) | 2020-09-25 | 2020-09-25 | Slide plate gate valve for severe working conditions |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112081936A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113007435A (en) * | 2021-03-22 | 2021-06-22 | 苏州孚杰机械有限公司 | Self-cleaning valve used in high-temperature state |
| CN115234674A (en) * | 2022-07-22 | 2022-10-25 | 浙江汇丰阀门有限公司 | Anti-backflow filtering gate valve |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2755371Y (en) * | 2004-10-10 | 2006-02-01 | 天津市圣恺工业技术发展有限公司 | Reciprocating and sliding ceramic sealed sluice valve with double flashboard |
| CN204213378U (en) * | 2014-10-29 | 2015-03-18 | 上海中航阀门有限公司 | Hard-sealing zero reveals cutter valve |
| CN206708425U (en) * | 2017-03-31 | 2017-12-05 | 特技阀门集团有限公司 | Flat gate valve with novel sealing structure |
| CN108757973A (en) * | 2018-08-16 | 2018-11-06 | 北京航天石化技术装备工程有限公司 | A kind of double-flashboard gate valve |
| CN111853267A (en) * | 2020-07-09 | 2020-10-30 | 浙江力诺流体控制科技股份有限公司 | Fully-closed gate valve |
| CN213206620U (en) * | 2020-09-14 | 2021-05-14 | 浙江联大阀门有限公司 | Slide plate gate valve for severe working conditions |
-
2020
- 2020-09-25 CN CN202011023481.XA patent/CN112081936A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2755371Y (en) * | 2004-10-10 | 2006-02-01 | 天津市圣恺工业技术发展有限公司 | Reciprocating and sliding ceramic sealed sluice valve with double flashboard |
| CN204213378U (en) * | 2014-10-29 | 2015-03-18 | 上海中航阀门有限公司 | Hard-sealing zero reveals cutter valve |
| CN206708425U (en) * | 2017-03-31 | 2017-12-05 | 特技阀门集团有限公司 | Flat gate valve with novel sealing structure |
| CN108757973A (en) * | 2018-08-16 | 2018-11-06 | 北京航天石化技术装备工程有限公司 | A kind of double-flashboard gate valve |
| CN111853267A (en) * | 2020-07-09 | 2020-10-30 | 浙江力诺流体控制科技股份有限公司 | Fully-closed gate valve |
| CN213206620U (en) * | 2020-09-14 | 2021-05-14 | 浙江联大阀门有限公司 | Slide plate gate valve for severe working conditions |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113007435A (en) * | 2021-03-22 | 2021-06-22 | 苏州孚杰机械有限公司 | Self-cleaning valve used in high-temperature state |
| CN115234674A (en) * | 2022-07-22 | 2022-10-25 | 浙江汇丰阀门有限公司 | Anti-backflow filtering gate valve |
| CN115234674B (en) * | 2022-07-22 | 2024-05-24 | 浙江汇丰阀门有限公司 | Backflow-preventing filter gate valve |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112081936A (en) | Slide plate gate valve for severe working conditions | |
| US2906491A (en) | Valves | |
| CN213206620U (en) | Slide plate gate valve for severe working conditions | |
| CN201262244Y (en) | Plate sluice valve for high-temperature solid-containing fluid | |
| CN111706679A (en) | Self-cleaning stop valve | |
| CN103438232A (en) | Self-cleaning gate valve applied to coal chemical industry | |
| CN209977301U (en) | Four-valve-clack type friction-free ball valve | |
| CN215371062U (en) | Hard seal floating ball valve for boiling bed residual oil hydrogenation device | |
| CN216566719U (en) | Double-sealing double-discharge three-eccentric metal hard sealing butterfly valve | |
| WO2016167746A1 (en) | Self-cleaning double block and bleed valve | |
| CN213929507U (en) | Dustproof hard seal ball valve | |
| CN210661421U (en) | Hard-sealing zero-leakage knife gate valve with valve cover | |
| CN212718121U (en) | High-temperature high-pressure hard sealing ball valve | |
| CN209876009U (en) | Particle-proof ball valve | |
| CN201184421Y (en) | Throttle type ceramic gate valve | |
| CN221097522U (en) | Slag lock valve of gasification furnace system | |
| CN215172379U (en) | Two-way anti-over-closing precision corrugated pipe gate valve | |
| CN209977308U (en) | Non-interference guide valve core assembly and non-friction ball valve | |
| CN113883279A (en) | From black water valve of taking belt cleaning device | |
| CN203585378U (en) | Self-cleaning gate valve for coal chemical industry | |
| CN104676030B (en) | High-temperature wearable two-way hard seal purges slurry oil shear valve | |
| CN204459232U (en) | High-temperature wearable two-way hard seal purges slurry oil shear valve | |
| CN217633942U (en) | Anti-crystallization orifice valve | |
| CN212839480U (en) | Elastic sealing gate valve | |
| CN217328546U (en) | High-pressure metal seal ball valve with anti-coking washing function |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |