CN113339533A - High-sealing-performance gate valve with anti-blocking function and operation method thereof - Google Patents
High-sealing-performance gate valve with anti-blocking function and operation method thereof Download PDFInfo
- Publication number
- CN113339533A CN113339533A CN202110498523.3A CN202110498523A CN113339533A CN 113339533 A CN113339533 A CN 113339533A CN 202110498523 A CN202110498523 A CN 202110498523A CN 113339533 A CN113339533 A CN 113339533A
- Authority
- CN
- China
- Prior art keywords
- gate valve
- gate
- tar
- sealing
- cleaning
- 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.)
- Withdrawn
Links
- 238000000034 method Methods 0.000 title claims description 8
- 238000007789 sealing Methods 0.000 claims abstract description 70
- 230000007246 mechanism Effects 0.000 claims abstract description 55
- 238000001125 extrusion Methods 0.000 claims abstract description 50
- 239000012535 impurity Substances 0.000 claims abstract description 20
- 238000004140 cleaning Methods 0.000 claims description 93
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 44
- 238000003825 pressing Methods 0.000 claims description 27
- 239000012530 fluid Substances 0.000 claims description 21
- 239000007788 liquid Substances 0.000 claims description 17
- 238000004064 recycling Methods 0.000 claims description 15
- 238000007790 scraping Methods 0.000 claims description 12
- 230000000087 stabilizing effect Effects 0.000 claims description 11
- 230000006835 compression Effects 0.000 claims description 8
- 238000007906 compression Methods 0.000 claims description 8
- 238000005192 partition Methods 0.000 claims description 6
- 230000001681 protective effect Effects 0.000 claims description 6
- 238000005086 pumping Methods 0.000 claims description 4
- 238000004891 communication Methods 0.000 claims 3
- 239000000126 substance Substances 0.000 abstract description 7
- 238000009825 accumulation Methods 0.000 abstract description 4
- 238000005054 agglomeration Methods 0.000 abstract description 3
- 230000002776 aggregation Effects 0.000 abstract description 3
- 238000002156 mixing Methods 0.000 abstract description 3
- 238000001556 precipitation Methods 0.000 abstract description 3
- 230000006870 function Effects 0.000 description 15
- 239000003034 coal gas Substances 0.000 description 6
- 239000003381 stabilizer Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000002035 prolonged effect Effects 0.000 description 4
- 239000012791 sliding layer Substances 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 238000000605 extraction Methods 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 229910001208 Crucible steel Inorganic materials 0.000 description 1
- 229910000885 Dual-phase steel Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- VGIPUQAQWWHEMC-UHFFFAOYSA-N [V].[Mo].[Cr] Chemical compound [V].[Mo].[Cr] VGIPUQAQWWHEMC-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 229910001338 liquidmetal Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000004021 metal welding Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000002285 radioactive effect Effects 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000006163 transport media Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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
- F16K3/0209—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 the valve having a particular passage, e.g. provided with a filter, throttle or safety device
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B1/00—Cleaning by methods involving the use of tools
- B08B1/10—Cleaning by methods involving the use of tools characterised by the type of cleaning tool
- B08B1/16—Rigid blades, e.g. scrapers; Flexible blades, e.g. wipers
- B08B1/165—Scrapers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B1/00—Cleaning by methods involving the use of tools
- B08B1/30—Cleaning by methods involving the use of tools by movement of cleaning members over a surface
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/02—Cleaning by the force of jets or sprays
-
- 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
- F16K3/0227—Packings
-
- 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
- F16K3/0254—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 being operated by particular means
-
- 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
-
- 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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
- F16K31/50—Mechanical actuating means with screw-spindle or internally threaded actuating means
- F16K31/508—Mechanical actuating means with screw-spindle or internally threaded actuating means the actuating element being rotatable, non-rising, and driving a non-rotatable axially-sliding element
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Valves (AREA)
Abstract
The invention discloses a high-sealing gate valve with an anti-blocking function, which comprises a gate valve body, a gate valve screw rod and a gate valve gate, wherein a pair of sealing mechanisms are connected between the gate valve body and the gate valve gate, each sealing mechanism comprises a sealing air bag, a falling extrusion block is connected between each sealing air bag and the gate valve gate, a pair of supporting plates are connected in each sealing air bag, a plurality of uniformly distributed springback mechanisms are connected in each sealing air bag, a thread groove matched with the gate valve screw rod is chiseled in the gate valve gate, and a stable rotating groove matched with the gate valve screw rod is chiseled in the gate valve body. According to the invention, through the arrangement of the corresponding mechanism on the gate valve, the sealing performance of the gate valve is effectively improved, the accumulation and precipitation of tar substances in the gate valve are reduced, the mixing and agglomeration of tar and gas impurities are avoided, the possibility of the failure of the sealing of the gate valve is greatly reduced, the safety of gas use is improved, the influence on the normal opening and closing of the gate valve is reduced, and the blockage of gas is avoided.
Description
Technical Field
The invention belongs to the technical field of gate valves, and particularly relates to a high-sealing gate valve with an anti-blocking function and an operation method thereof.
Background
Valves are accessories for pipelines for opening and closing the pipeline, controlling flow direction, regulating and controlling parameters of the transport medium, and can be classified into shut-off valves, check valves, regulating valves, and the like according to their functions.
The valve is a control part in a fluid conveying system, has the functions of stopping, regulating, guiding, preventing counter flow, stabilizing pressure, shunting or overflowing and relieving pressure and the like, is used for the valve of the fluid control system, and has quite a plurality of varieties and specifications from the simplest stop valve to various valves used in an extremely complicated automatic control system.
The valves 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 further divided into cast iron valves, cast steel valves, stainless steel valves, chromium molybdenum vanadium steel valves, dual-phase steel valves, plastic valves, nonstandard valves and the like according to the materials.
The gas has certain danger when using, therefore when carrying out the operation of gas system in industrial production, must cut off to the gas earlier, can carry out relevant gas operation, mainly adopts the mode of gas gate valve to cut off the gas in the gas system at present to guarantee the safe of follow-up operation and go on.
The gate valve is one of valves, and is a shutter, the movement direction of the shutter is perpendicular to the fluid direction, the gate valve can only be fully opened and fully closed, and can not be adjusted and throttled, the gate valve is sealed by the contact of a valve seat and the shutter, usually, a sealing surface is subjected to surfacing welding of metal materials to increase the wear resistance, such as surfacing welding of 1Cr13, STL6, stainless steel and the like, the shutter is provided with a rigid shutter and an elastic shutter, and the gate valve is divided into the rigid gate valve and the elastic gate valve according to the difference of the shutters.
At present, the gate valve contains a large amount of tar substances in the use of gas pipeline, the gate valve is after long-time operation, a large amount of tar substances can be accumulated to the bottom accumulation, tar deposits for a long time inside the gate valve, can mix the caking with the impurity in the coal gas, lead to the sealing failure of gate valve, cause revealing of coal gas, not only extravagant coal gas, the risk of conflagration still can appear, the tar impurity of caking still can lead to the fact the corruption to the gate valve simultaneously, not only influence the leakproofness of gate valve, still can influence the normal open and shut of gate valve, cause the card of gate valve to die, lead to the jam of coal gas.
Therefore, in view of the above technical problems, it is necessary to provide a gate valve with high sealing performance and anti-blocking function and an operation method thereof.
Disclosure of Invention
The invention aims to provide a high-sealing gate valve with an anti-blocking function and an operation method thereof, and aims to solve the problems that a large amount of tar substances are accumulated at the bottom of the gate valve in a gas pipeline, and the tar substances are agglomerated with impurities in gas, so that the gate valve is corroded, the sealing performance is influenced, and the normal opening and closing of the gate valve are influenced, so that the gas is blocked.
In order to achieve the above object, an embodiment of the present invention provides the following technical solutions:
the utility model provides a high leakproofness gate valve with prevent stifled function, includes gate valve body, gate valve screw rod and gate valve gate, be connected with a pair of sealing mechanism between gate valve body and the gate valve gate, sealing mechanism is including sealed gasbag, be connected with whereabouts extrusion piece between sealed gasbag and the gate valve gate, the sealed gasbag in-connection has a pair of backup pad, the sealed gasbag in-connection has a plurality of evenly distributed's resilience mechanism.
Furthermore, a thread groove matched with the gate valve screw rod is chiseled in the gate valve gate, the thread groove is arranged to enable a user to control the lifting of the gate valve gate through the rotary gate valve screw rod, so that the control of the gate valve gate is more stable and convenient, a stable rotary groove matched with the gate valve screw rod is chiseled in the gate valve body, the relative position of the gate valve screw rod and the gate valve body can be fixed through the arrangement of the stable rotary groove, the lifting control of the gate valve gate by the gate valve screw rod is more stable, the lifting height of the gate valve gate can be limited, the untight condition when the gate valve gate is closed is avoided, the sealing effect of the gate valve gate on the gate valve body is stronger, a tar cleaning groove is chiseled in the gate valve gate, the tar and impurities can be contained through the arrangement of the tar cleaning groove, and the tar flows out of the gate valve gate when the cleaning mechanism washes away the tar, the tar pollution area is smaller, and the tar removal efficiency is enhanced.
Further, the fixed standing groove matched with the sealing airbag is chiseled in the gate valve body, the setting of the fixed standing groove can be fixed to the sealing airbag, the sealing airbag is prevented from being deformed by the driving of a gate valve gate, the sealing airbag has a stronger sealing effect between the gate valve body and the gate valve gate, and the service life of the sealing airbag is prolonged, the oblique angle sliding groove matched with the falling extrusion block is chiseled in the gate valve body, the arrangement of the oblique angle sliding groove can enable the gate valve gate to extrude the falling extrusion block, the falling extrusion block can slide, a certain region which is not polluted by tar can be flowed out for the gate valve gate when the falling extrusion block slides, the tar can be limited by the falling extrusion block, the tar can be cleaned more, the gate valve is matched with the falling extrusion block, and the gate valve can better enable the falling extrusion block to be extruded when the gate valve extrudes the falling extrusion block The whereabouts extrusion piece slides, has reduced the damage that the friction brought between whereabouts extrusion piece and the gate valve gate simultaneously, makes the life of whereabouts extrusion piece and gate valve gate promote, be connected with a pair of oil scraping pad between gate valve gate and the gate valve body, oil scraping pad's setting can be scraped the tar on the gate valve body inner wall down, has promoted the gate valve gate to the leakproofness of gate valve body, clearance tar that simultaneously can be better.
Furthermore, the rebounding mechanism comprises a rebounding fixed bin, the rebounding fixed bin can limit the rebounding sliding bin, the rebounding sliding bin is prevented from being separated from the rebounding fixed bin, the service life of the rebounding mechanism is prolonged to some extent, the rebounding fixed bin is connected with the sealing air bag, the stability of the rebounding fixed bin is improved through connection, the rebounding position of the falling extrusion block can be more accurate, the falling extrusion block can rebound stably, the rebounding sliding bin is connected in the rebounding fixed bin, the position of the rebounding spring is fixed through the rebounding sliding bin, the rebounding spring is prevented from being separated from the rebounding spring, a compression telescopic slot matched with the rebounding sliding bin is formed in the rebounding fixed bin, the stability of the rebounding sliding bin is effectively improved through the arrangement of the compression telescopic slot, the connectivity between the rebounding fixed bin and the rebounding fixed bin is higher, and the rebounding spring is connected between the rebounding fixed bin and the rebounding sliding bin, the setting of resilience spring can extrude whereabouts extrusion piece, can make whereabouts extrusion piece inseparabler with being connected of gate valve gate when the gate valve gate whereabouts, promotes the leakproofness, can seal the pressure outflow hole when the gate valve gate rises, has improved the leakproofness of gate valve gate.
Furthermore, be connected with wiper mechanism on the gate valve body, wiper mechanism includes the cleaning solution storehouse, and the setting in cleaning solution storehouse can hold the cleaning solution of certain capacity, and the cleaning solution can be cleared up the tar clearance groove of chiseling on the gate valve gate, the setting in cleaning solution storehouse has the division board, and the setting of division board can reduce the direct contact of cleaning solution and water pump, makes the life of water pump obtain promoting, prevents the damage of water pump, the division board in-connection has the water pump, and the setting of water pump can be with the cleaning solution extraction entering connecting tube in the cleaning solution storehouse, be connected with connecting tube and water pumping pipeline on the water pump, the gate valve in-connection has a pair of reposition of redundant personnel pipeline, and the setting of reposition of redundant personnel pipeline can carry out the water conservancy diversion dispersion with the cleaning solution, makes each position in tar clearance groove can both obtain the clearance, and a pair of one side that reposition of redundant personnel pipeline is close to, the arrangement of the shunt communicating pipe enables cleaning liquid to enter the shunt pipeline.
Further, the connecting tube runs through the gate valve body setting, it has the clean groove of pressing down with the connecting tube assorted to open the chisel on the gate valve gate, and the setting of pressing down clean groove can hold the connecting tube, makes the trigger mechanism who connects on the connecting tube can obtain the compression of gate valve gate, and is a pair of reposition of redundant personnel communicating pipe all with press down the groove and communicate mutually, be connected with a plurality of evenly distributed's atomizer on the reposition of redundant personnel pipeline, atomizer's setting can make the cleaning solution carry out more even spraying, makes to press down clean groove and obtain better cleanness, atomizer runs through the gate valve gate setting, it has and presses down the communicating groove with reposition of redundant personnel communicating pipe assorted to open the chisel on the connecting tube, and the setting of pressing down the communicating groove can communicate reposition of redundant personnel communicating pipe and connecting tube.
Further, be connected with trigger mechanism on the connecting tube, trigger mechanism includes the stabilizer ring, and the setting of stabilizer ring can support pressure sensor, prevents the revealing of connecting tube when the gate valve gate rises, the stabilizer ring is connected with connecting tube, and the stabilizer ring can make the position of stabilizer ring more fixed with being connected of connecting tube, be connected with pressure sensor on the stabilizer ring, pressure sensor can sense pressure spring's compression, can send information to the control box when pressure spring compresses, can control the water pump through the control box, makes the cleaning solution in the water pump extraction cleaning solution storehouse, prevents the waste of cleaning solution.
Further, be equipped with the closed tube on the pressure sensor, the setting of closed tube can block up the connecting tube, and the cleaning solution can not reveal when making the gate valve gate rise, prevents the contact of coal gas and cleaning solution, has promoted the quality of coal gas, be connected with the protection film between closed tube and the pressure sensor, the setting of protection film can be protected pressure spring, prevents the corruption of cleaning solution, be equipped with a plurality of pressure spring in the protection film, pressure spring can backfill the closed tube when the gate valve gate rises, carries out the shutoff to the connecting tube once more, open on the closed tube and chisel have with connecting tube assorted slip indent down.
Further, be connected with the control box on the gate valve body, pressure sensor and water pump all with control box electric connection, the mechanism of recycling is connected to the cleaning solution storehouse in-connection, and the control box can control opening and closing of pressure sensor and water pump.
An operation method of a high-sealing-performance gate valve with an anti-blocking function comprises the following steps:
s1, when a user needs to close a gate valve body to perform gas system operation, a gate valve is lowered by rotating a gate valve screw rod, and tar and impurities on the inner wall of the gate valve body are scraped by an oil scraping pad while the gate valve is lowered;
s2, after the gate valve descends to a certain degree, the gate valve can extrude the falling extrusion block, the falling extrusion block can extrude the sealing air bag, the sealing air bag is tightly attached to the gate valve, the gate valve can seal the gate valve body, and tar scraped by the oil scraping pad and inherent tar at the bottom can be sealed into a tar cleaning groove;
s3, the gate valve can extrude the closed pipe, the closed pipe slides downwards to leak out of the pressing communicating groove, the pressing communicating groove is communicated with the shunting communicating pipe, meanwhile, the closed pipe can extrude the pressure sensor, the pressure sensor can control the water pump to be opened through the control box when sensing extrusion, and cleaning liquid in the cleaning liquid bin is extracted;
s4, the cleaning solution enters the atomizing nozzle through the shunt pipeline and then washes the tar cleaning tank;
s5, the cleaning solution in the tar cleaning groove takes tar and impurities to enter the recycling mechanism through water pressure, and the tar and the impurities are filtered and precipitated by the recycling mechanism to enter the cleaning solution bin again, so that the cleaning solution bin is convenient to reuse, and meanwhile, a user can regularly clean the tar and the impurities through the recycling mechanism.
Compared with the prior art, the invention has the following advantages:
according to the invention, through the arrangement of the corresponding mechanism on the gate valve, the sealing performance of the gate valve is effectively improved, the accumulation and precipitation of tar substances in the gate valve are reduced, the mixing and agglomeration of tar and gas impurities are avoided, the possibility of the failure of the sealing of the gate valve is greatly reduced, the safety of gas use is improved, the influence on the normal opening and closing of the gate valve is reduced, and the blockage of gas is avoided.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a front sectional view illustrating a usage state of a high-sealability gate valve with an anti-blocking function according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a structure A shown in FIG. 1 according to an embodiment of the present invention;
FIG. 3 is a first cross-sectional side view of a high-sealability gate valve with an anti-blocking function according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a structure B shown in FIG. 3 according to an embodiment of the present invention;
FIG. 5 is a front sectional view of an unused state of a high-sealability gate valve with an anti-blocking function according to an embodiment of the present invention;
FIG. 6 is a schematic diagram of the structure at C in FIG. 5 according to an embodiment of the present invention;
FIG. 7 is a second sectional side view of a high-sealability gate valve with an anti-blocking function according to an embodiment of the present invention;
FIG. 8 is a schematic diagram illustrating a structure D shown in FIG. 7 according to an embodiment of the present invention;
FIG. 9 is a schematic diagram illustrating structure E in FIG. 7 according to an embodiment of the present invention;
fig. 10 is a perspective view of a high-sealability gate valve with an anti-blocking function according to an embodiment of the present invention.
In the figure: 1. the automatic cleaning device comprises a gate valve body, 101, a gate valve screw rod, 102, a gate valve gate, 103, a control box, 2, a sealing mechanism, 201, a sealing air bag, 202, a falling extrusion block, 203, a supporting plate, 204, an oil scraping pad, 3, a rebound mechanism, 301, a rebound fixing bin, 302, a rebound sliding bin, 303, a rebound spring, 4, a cleaning mechanism, 401, a cleaning liquid bin, 402, a partition plate, 403, a water pump, 404, a connecting pipeline, 405, a water pumping pipeline, 406, a shunt pipeline, 407, a shunt communicating pipe, 408, an atomizing nozzle, 5, a trigger mechanism, 501, a stabilizing ring, 502, a pressure sensor, 503, a closed pipe, 504, a protective film, 505, a pressure spring, 6, a recycling mechanism, 601, a drawing processing box, 602, an oil filtering sponge, 603, a water pressing sheet, 604 and a supporting sliding layer.
Detailed Description
The present invention will be described in detail below with reference to embodiments shown in the drawings. The embodiments are not intended to limit the present invention, and structural, methodological, or functional changes made by those skilled in the art according to the embodiments are included in the scope of the present invention.
The invention discloses a high-sealing gate valve with an anti-blocking function, which comprises a gate valve body 1, a gate valve screw rod 101 and a gate valve 102, wherein a pair of sealing mechanisms 2 are connected between the gate valve body 1 and the gate valve 102, the sealing mechanisms 2 can seal the gate valve 102 and the gate valve body 1, when the gate valve 102 falls, gas leakage is prevented, the safety of workers is improved, and fire caused by gas leakage is prevented, the sealing mechanisms 2 comprise sealing air bags 201, the sealing air bags 201 can seal the gate valve 102, the sealing air bags 201 are deformed by extrusion of falling extrusion blocks 202 to extrude the gate valve 102, so that the connectivity between the gate valve 102 and the sealing air bags 201 is stronger, and the falling extrusion blocks 202 are connected between the sealing air bags 201 and the gate valve 102, the setting of whereabouts extrusion piece 202 can slide through the whereabouts of gate valve gate 102, not only can compress sealed gasbag 201, can also seal gate valve gate 102, sealed gasbag 201 in-connection has a pair of backup pad 203, the setting of backup pad 203 can support sealed gasbag 201, prevent sealed gasbag 201's excessive deformation, make sealed gasbag 201's leakproofness stronger, sealed gasbag 201 in-connection has a plurality of evenly distributed's resilience mechanism 3.
Wherein, the recycling mechanism 6 comprises a drawing processing box 601, a sliding groove matched with the drawing processing box 601 is drilled on the cleaning fluid bin 401, an oil filtering sponge 602 is arranged in the drawing processing box 601, the oil filtering sponge 602 can block tar to prevent the tar from entering the cleaning fluid bin 401 again, the recycling quality of the cleaning fluid is improved, a plurality of pressure outflow holes which are uniformly distributed are drilled on the gate valve body 1, a pair of water pressing sheets 603 are arranged in the pressure outflow holes, when the cleaning fluid in the tar cleaning groove is excessive, the water pressing sheets 603 can generate pressure to the water pressing sheets 603, when the pressure is enough, the water pressing sheets 603 can be opened to enable the cleaning fluid to enter the drawing processing box 601, the water pressing sheets 603 are connected with the gate valve body 1, a supporting sliding layer 604 is connected between the cleaning fluid bin 401 and the isolation plate 402, the supporting sliding layer 604 can support the drawing processing box 601, promoted the stability of pull processing case 601, it has the active carbon standing groove to cut in the support sliding layer 604, is equipped with the active carbon in the active carbon standing groove, cuts the sediment filter tank that has a plurality of evenly distributed on the pull processing case 601.
Referring to fig. 3-4, a threaded groove matched with the gate valve screw 101 is drilled in the gate valve 102, the threaded groove is configured to enable a user to control the lifting of the gate valve 102 by rotating the gate valve screw 101, so that the gate valve 102 is controlled more stably and conveniently, a stable rotating groove matched with the gate valve screw 101 is drilled in the gate valve body 1, the stable rotating groove is configured to enable the relative position of the gate valve screw 101 and the gate valve body 1 to be fixed, the lifting control of the gate valve 102 by the gate valve screw 101 is more stable, the lifting height of the gate valve 102 can be limited, the situation that the gate valve 102 is not tight when closed is avoided, the sealing effect of the gate valve 102 on the gate valve body 1 is stronger, a tar cleaning groove is drilled in the gate valve 102, the tar cleaning groove is configured to accommodate tar and impurities, and the cleaning mechanism 4 flows out of the gate valve 102 when the tar is washed, the tar pollution area is smaller, and the tar removal efficiency is enhanced.
Referring to fig. 3-4, a fixed placing groove matched with the sealing airbag 201 is formed in the gate valve body 1, the fixed placing groove is arranged to fix the sealing airbag 201, so as to prevent the sealing airbag 201 from being deformed by the driving of the gate valve 102, so that the sealing airbag 201 has a stronger sealing effect between the gate valve body 1 and the gate valve 102, and the service life of the sealing airbag 201 is prolonged, an oblique angle sliding groove matched with the falling extrusion block 202 is formed in the gate valve body 1, the arrangement of the oblique angle sliding groove can enable the falling extrusion block 202 to slide when the gate valve 102 extrudes the falling extrusion block 202, and meanwhile, when the falling extrusion block 202 slides, the falling extrusion block 102 can flow out of a certain area which is not polluted by tar, so that tar can be limited by the falling extrusion block 202, and more tar can be cleaned, gate valve gate 102 and whereabouts extrusion piece 202 phase-match, gate valve gate 102 can be at gate valve gate 102 better messenger whereabouts extrusion piece 202 slip when the extrusion of whereabouts extrusion piece 202, the damage that the friction brought between whereabouts extrusion piece 202 and the gate valve gate 102 has been reduced simultaneously, make the life of whereabouts extrusion piece 202 and gate valve gate 102 promote, be connected with a pair of oil scraping pad 204 between gate valve gate 102 and the gate valve body 1, oil scraping pad 204's setting can be scraped the tar on the inner wall of gate valve body 1 down, the leakproofness of gate valve gate 102 to gate valve body 1 has been promoted, simultaneously can better clearance tar.
Referring to fig. 5-6, the rebounding mechanism 3 includes a rebounding fixed bin 301, the rebounding fixed bin 301 is configured to limit a rebounding sliding bin 302, the rebounding sliding bin 302 is prevented from being separated from the rebounding fixed bin 301, the service life of the rebounding mechanism 3 is prolonged to some extent, the rebounding fixed bin 301 is connected with the air-tight bag 201, the connection improves the stability of the rebounding fixed bin 301, the rebounding position of the falling extrusion block 202 can be more accurate, the falling extrusion block 202 can rebound stably, the rebounding sliding bin 302 is connected in the rebounding fixed bin 301, the position of the rebounding spring 303 is fixed by the configuration of the rebounding sliding bin 302, the separation of the rebounding spring 303 is prevented, compression telescopic slots matched with the rebounding sliding bin 302 are drilled in the rebounding fixed bin 301, the configuration of the compression telescopic slots effectively improves the stability of the rebounding sliding bin 302, and the connectivity between the rebounding fixed bin 302 and the rebounding fixed bin 301 is stronger, be connected with resilience spring 303 between fixed storehouse 301 and the slip storehouse 302 of kick-backing, the setting of resilience spring 303 can extrude whereabouts extrusion block 202, can make whereabouts extrusion block 202 inseparabler with being connected of gate valve gate 102 when gate valve gate 102 falls, promotes the leakproofness, can seal the pressure outflow hole when gate valve gate 102 rises, has improved gate valve gate 102's leakproofness.
Referring to fig. 1-2, a cleaning mechanism 4 is connected to the gate valve body 1, the cleaning mechanism 4 includes a cleaning fluid tank 401, the cleaning fluid tank 401 is configured to contain a certain volume of cleaning fluid, the cleaning fluid can clean a tar cleaning tank cut on the gate valve 102, a partition plate 402 is connected to the cleaning fluid tank 401, the partition plate 402 is configured to reduce direct contact between the cleaning fluid and the water pump 403, so as to prolong the service life of the water pump 403 and prevent the water pump 403 from being damaged, the water pump 403 is connected to the partition plate 402, the water pump 403 is configured to pump the cleaning fluid in the cleaning fluid tank 401 into the connecting pipe 404, the water pump 404 is connected to the connecting pipe 404 and the water pumping pipe 405, a pair of diversion pipes 406 is connected to the gate valve 102, the diversion pipes 406 are configured to divert the cleaning fluid, so that each position of the tar cleaning tank can be cleaned, one side of each of the pair of branch pipes 406 close to each other is connected with a branch communicating pipe 407, and the arrangement of the branch communicating pipe 407 allows cleaning liquid to enter the branch pipe 406.
Referring to fig. 1-2, the connecting pipe 404 is arranged through the gate valve body 1, a pressing cleaning groove matched with the connecting pipe 404 is formed in the gate valve 102, the connecting pipe 404 can be accommodated by the pressing cleaning groove, the trigger mechanism 5 connected to the connecting pipe 404 can be compressed by the gate valve 102, a pair of shunt communicating pipes 407 are communicated with the pressing groove, a plurality of evenly distributed atomizing nozzles 408 are connected to the shunt pipe 406, the cleaning liquid can be sprayed more evenly by the arrangement of the atomizing nozzles 408, the pressing cleaning groove can be better cleaned by the pressing, the atomizing nozzles 408 are arranged through the gate valve 102, a pressing communicating groove matched with the shunt communicating pipe 407 is formed in the connecting pipe 404, and the shunt communicating pipe 407 and the connecting pipe 404 can be communicated by the arrangement of the pressing communicating groove.
Referring to fig. 1 to 4, a trigger mechanism 5 is connected to the connecting pipe 404, the trigger mechanism 5 includes a stabilizing ring 501, the pressure sensor 502 can be supported by the stabilizing ring 501, leakage of the connecting pipe 404 when the gate valve 102 is lifted is prevented, the stabilizing ring 501 is connected to the connecting pipe 404, the position of the stabilizing ring 501 can be fixed by the connection of the stabilizing ring 501 and the connecting pipe 404, the pressure sensor 502 is connected to the stabilizing ring 501, the pressure sensor 502 can sense the compression of the pressure spring 505, when the pressure spring 505 is compressed, information can be sent to the control box 103, the control box 103 can control the water pump 403, the water pump 403 can pump cleaning liquid in the cleaning liquid tank 401, and waste of the cleaning liquid is prevented.
Referring to fig. 1-4, a sealing pipe 503 is disposed on the pressure sensor 502, the sealing pipe 503 is disposed to block the connection pipeline 404, so that the cleaning liquid does not leak when the gate valve 102 is lifted, the gas is prevented from contacting the cleaning liquid, the quality of the gas is improved, a protective film 504 is connected between the sealing pipe 503 and the pressure sensor 502, the protective film 504 is disposed to protect a pressure spring 505 and prevent the cleaning liquid from corroding, a plurality of pressure springs 505 are disposed in the protective film 504, the pressure spring 505 is configured to backfill the sealing pipe 503 when the gate valve 102 is lifted, and block the connection pipeline 404 again, and a sliding pressing groove matched with the connection pipeline 404 is chiseled on the sealing pipe 503.
Referring to fig. 1 to 10, a control box 103 is connected to a gate valve body 1, a pressure sensor 502 and a water pump 403 are both electrically connected to the control box 103, a recycling mechanism 6 is connected to a cleaning solution tank 401, the control box 103 can control the opening and closing of the pressure sensor 502 and the water pump 403, a control unit is provided in the control box 103, a user can program corresponding logic language into the control unit, the user can control the operation of the pressure sensor 502 and the water pump 403 through the logic language, and the pressure sensor 502 and the water pump 403 can be opened and closed through the control of the control box 103.
An operation method of a high-sealing-performance gate valve with an anti-blocking function comprises the following steps:
s1, when a user needs to close a gate valve body 1 to perform gas system operation, the gate valve 102 descends by rotating a gate valve screw 101, and tar and impurities on the inner wall of the gate valve body 1 are scraped by an oil scraping pad 204 while the gate valve 102 descends;
s2, after the gate valve 102 descends to a certain degree, the falling extrusion block 202 is extruded, the falling extrusion block 202 extrudes the sealing air bag 201, the sealing air bag 201 is attached to the gate valve 102 more tightly, the gate valve 102 can seal the gate valve body 1, and tar scraped by the oil scraping pad 204 and inherent tar at the bottom are sealed into a tar cleaning groove;
s3, the gate valve 102 extrudes the closed pipe 503, the closed pipe 503 slides downwards to leak out of the pressing communicating groove, the pressing communicating groove is communicated with the shunting communicating pipe 407, meanwhile, the closed pipe 503 extrudes the pressure sensor 502, the pressure sensor 502 senses that the extrusion can control the water pump 403 to be opened through the control box 103, and cleaning liquid in the cleaning liquid bin 401 is extracted;
s4, cleaning solution enters the atomizing nozzle 408 through the shunt pipeline 406 and then washes the tar cleaning tank;
s5, the cleaning solution in the tar cleaning groove takes tar and impurities to enter the recycling mechanism 6 through water pressure, and the tar and the impurities are filtered and precipitated by the recycling mechanism 6 to enter the cleaning solution cabin 401 again, so that the cleaning solution cabin is convenient to reuse, and meanwhile, a user can regularly clean the tar and the impurities through the recycling mechanism 6.
According to the technical scheme, the invention has the following beneficial effects:
according to the invention, through the arrangement of the corresponding mechanism on the gate valve, the sealing performance of the gate valve is effectively improved, the accumulation and precipitation of tar substances in the gate valve are reduced, the mixing and agglomeration of tar and gas impurities are avoided, the possibility of the failure of the sealing of the gate valve is greatly reduced, the safety of gas use is improved, the influence on the normal opening and closing of the gate valve is reduced, and the blockage of gas is avoided.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (10)
1. The utility model provides a high leakproofness gate valve with prevent stifled function, includes gate valve body (1), gate valve screw rod (101) and gate valve gate (102), its characterized in that, be connected with a pair of sealing mechanism (2) between gate valve body (1) and gate valve gate (102), sealing mechanism (2) are including sealed gasbag (201), be connected with whereabouts extrusion piece (202) between sealed gasbag (201) and gate valve gate (102), sealed gasbag (201) in-connection has a pair of backup pad (203), sealed gasbag (201) in-connection has a plurality of evenly distributed's resilience mechanism (3).
2. The gate valve with high sealing performance and anti-blocking function according to claim 1, wherein a threaded groove matched with the gate valve screw (101) is chiseled in the gate valve (102), a stable rotating groove matched with the gate valve screw (101) is chiseled in the gate valve body (1), and a tar cleaning groove is chiseled in the gate valve (102).
3. The gate valve with high sealing performance and anti-blocking function according to claim 1 is characterized in that a fixed placing groove matched with the sealing air bag (201) is chiseled in the gate valve body (1), an oblique angle sliding groove matched with the falling extrusion block (202) is chiseled in the gate valve body (1), the gate valve (102) is matched with the falling extrusion block (202), and a pair of oil scraping pads (204) is connected between the gate valve (102) and the gate valve body (1).
4. The gate valve with the anti-blocking function and the high sealing property is characterized in that the rebounding mechanism (3) comprises a rebounding fixed cabin (301), the rebounding fixed cabin (301) is connected with the sealing air bag (201), a rebounding sliding cabin (302) is connected in the rebounding fixed cabin (301), a compression telescopic groove matched with the rebounding sliding cabin (302) is formed in the rebounding fixed cabin (301), and a rebounding spring (303) is connected between the rebounding fixed cabin (301) and the rebounding sliding cabin (302).
5. The gate valve with the anti-blocking function and the high sealing performance as claimed in claim 1, wherein a cleaning mechanism (4) is connected to the gate valve body (1), the cleaning mechanism (4) comprises a cleaning fluid bin (401), a partition plate (402) is connected to the cleaning fluid bin (401), a water pump (403) is connected to the partition plate (402), a connecting pipeline (404) and a water pumping pipeline (405) are connected to the water pump (403), a pair of shunt pipelines (406) is connected to the gate valve (102), and a shunt communicating pipe (407) is connected to one side of the shunt pipelines (406).
6. The gate valve with high sealing performance and anti-blocking function according to claim 5, wherein the connecting pipe (404) is arranged to penetrate through the gate valve body (1), the gate valve (102) is provided with a pressing cleaning groove matched with the connecting pipe (404), a pair of the shunt communication pipes (407) are communicated with the pressing groove, the shunt pipe (406) is connected with a plurality of evenly distributed atomizing nozzles (408), the atomizing nozzles (408) are arranged to penetrate through the gate valve (102), and the connecting pipe (404) is provided with a pressing communication groove matched with the shunt communication pipes (407).
7. The gate valve with high sealing performance and anti-blocking function according to claim 5 is characterized in that a triggering mechanism (5) is connected to the connecting pipe (404), the triggering mechanism (5) comprises a stabilizing ring (501), the stabilizing ring (501) is connected to the connecting pipe (404), and a pressure sensor (502) is connected to the stabilizing ring (501).
8. The gate valve with high sealing performance and anti-blocking function according to claim 7 is characterized in that a closed pipe (503) is arranged on the pressure sensor (502), a protective film (504) is connected between the closed pipe (503) and the pressure sensor (502), a plurality of pressure springs (505) are arranged in the protective film (504), and a sliding lower pressing groove matched with the connecting pipeline (404) is formed in the closed pipe (503).
9. The gate valve with high sealing performance and anti-blocking function according to claim 1, wherein the gate valve body (1) is connected with a control box (103), the pressure sensor (502) and the water pump (403) are both electrically connected with the control box (103), and the cleaning solution bin (401) is connected with a recycling mechanism (6).
10. An operation method of a high-sealing-performance gate valve with an anti-blocking function is characterized by comprising the following steps:
s1, when a user needs to close a gate valve body (1) to perform gas system operation, a gate valve (102) descends by rotating a gate valve screw (101), and tar and impurities on the inner wall of the gate valve body (1) are scraped by an oil scraping pad (204) while the gate valve (102) descends;
s2, after the gate valve (102) descends to a certain degree, the falling extrusion block (202) is extruded, the falling extrusion block (202) extrudes the sealing air bag (201), the sealing air bag (201) is attached to the gate valve (102) more tightly, the gate valve (102) can seal the gate valve body (1), and tar scraped by the oil scraping pad (204) and bottom inherent tar are sealed into a tar cleaning groove;
s3, the gate valve (102) extrudes the closed pipe (503), the closed pipe (503) slides downwards to leak out of the pressing communicating groove, the pressing communicating groove is communicated with the shunting communicating pipe (407), meanwhile, the closed pipe (503) extrudes the pressure sensor (502), the pressure sensor (502) senses the extrusion and controls the water pump (403) to be opened through the control box (103), and cleaning liquid in the cleaning liquid bin (401) is extracted;
s4, the cleaning liquid enters an atomizing nozzle (408) through a shunt pipeline (406), and then the tar cleaning tank is washed;
s5, the cleaning solution in the tar cleaning groove takes tar and impurities to enter the recycling mechanism (6) through water pressure, and the tar and the impurities are filtered and precipitated by the recycling mechanism (6) to enter the cleaning solution bin (401) again, so that the cleaning solution bin is convenient to reuse, and meanwhile, a user can regularly clean the tar and the impurities through the recycling mechanism (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110498523.3A CN113339533A (en) | 2021-05-08 | 2021-05-08 | High-sealing-performance gate valve with anti-blocking function and operation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110498523.3A CN113339533A (en) | 2021-05-08 | 2021-05-08 | High-sealing-performance gate valve with anti-blocking function and operation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113339533A true CN113339533A (en) | 2021-09-03 |
Family
ID=77469877
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110498523.3A Withdrawn CN113339533A (en) | 2021-05-08 | 2021-05-08 | High-sealing-performance gate valve with anti-blocking function and operation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113339533A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114183549A (en) * | 2021-12-13 | 2022-03-15 | 江苏优特莫森机械有限公司 | Clamp valve convenient to connect and mount and use method thereof |
-
2021
- 2021-05-08 CN CN202110498523.3A patent/CN113339533A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114183549A (en) * | 2021-12-13 | 2022-03-15 | 江苏优特莫森机械有限公司 | Clamp valve convenient to connect and mount and use method thereof |
| CN114183549B (en) * | 2021-12-13 | 2024-01-26 | 江苏优特莫森机械有限公司 | Clamp valve convenient to connect and install and application method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113339533A (en) | High-sealing-performance gate valve with anti-blocking function and operation method thereof | |
| CN107842626B (en) | One-way anti-blocking valve | |
| CN118066368A (en) | High sealing valve with replaceable parts | |
| CN201744214U (en) | High-pressure backwash filter | |
| CN217287477U (en) | Filter device inside valve | |
| CN208747621U (en) | A kind of multi-station high efficient Sealed Unloading device | |
| CN214437805U (en) | Positive pressure air filtering and drying system for preventing oil pollution of oil tank | |
| CN205235533U (en) | Desulfurizing slurry pipeline debris remove device | |
| CN209317138U (en) | A kind of filter | |
| CN212359732U (en) | Throttling kill manifold sand control device | |
| CN214680460U (en) | Filter pipeline for hydraulic engineering | |
| CN211599849U (en) | Connecting device for ventilating duct | |
| CN213954364U (en) | Novel water injection well relief valve | |
| CN103274137A (en) | Pneumatic double-storage-tank drainage controller | |
| CN209348240U (en) | A kind of self-cleaning filtering station | |
| CN111636856A (en) | Throttling kill manifold sand control device | |
| CN213326708U (en) | Underground pneumatic long-distance oil transportation device | |
| CN220929327U (en) | Dry-type drilling collection sediment dust removal purification integrated intelligent device | |
| CN206754014U (en) | A kind of chemical pump filter device | |
| CN218339182U (en) | Pipeline back-flushing device | |
| CN109200643A (en) | A kind of filter | |
| CN107413865B (en) | Rolling mill speed reducer oil leak recovery system | |
| CN211914744U (en) | A waste fitting discharging for resistance to compression valve | |
| CN214063900U (en) | Leak-stopping valve for oily or viscous materials | |
| CN111022717A (en) | Pressure release device and using method thereof |
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 | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20210903 |
|
| WW01 | Invention patent application withdrawn after publication |