CN115492946A - Zero leakage stop valve based on multiple sealing - Google Patents
Zero leakage stop valve based on multiple sealing Download PDFInfo
- Publication number
- CN115492946A CN115492946A CN202211115966.0A CN202211115966A CN115492946A CN 115492946 A CN115492946 A CN 115492946A CN 202211115966 A CN202211115966 A CN 202211115966A CN 115492946 A CN115492946 A CN 115492946A
- Authority
- CN
- China
- Prior art keywords
- valve
- driving block
- groove
- bypass hole
- column
- 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.)
- Granted
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 43
- 238000005520 cutting process Methods 0.000 claims description 9
- 230000000087 stabilizing effect Effects 0.000 claims description 5
- 238000007493 shaping process Methods 0.000 claims 1
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000003825 pressing 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
- F16K3/22—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 sealing faces shaped as surfaces of solids of revolution
- F16K3/24—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 sealing faces shaped as surfaces of solids of revolution with cylindrical valve 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
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/04—Construction of housing; Use of materials therefor of sliding valves
- F16K27/041—Construction of housing; Use of materials therefor of sliding valves cylindrical slide valves
-
- 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
Abstract
The invention discloses a zero-leakage stop valve based on multiple sealing, which comprises a transverse rectangular valve seat, wherein an isosceles trapezoid boss is formed on the upper end surface of the middle part of the valve seat, opposite inlet and outlet holes are formed on two end surfaces of the valve seat, an inverted V-shaped valve slot is formed in the boss, and two ends of the valve slot are respectively communicated with the inlet and outlet holes at two ends of the valve seat; a bypass hole which is transverse and communicated with the valve groove is formed in the middle of the valve seat, and openings at two ends of the bypass hole are respectively positioned on the inner walls of the two ends of the valve groove, which are close to the inlet and outlet holes; a rectangular sinking platform communicated with the valve groove is formed on the upper end face of the boss, and a vertical valve hole communicated with the bypass hole is formed in the bottom face of the rectangular sinking platform.
Description
Technical Field
The invention relates to the technical field of valves, in particular to a zero-leakage stop valve based on multiple sealing.
Background
The valve is a control part in a fluid conveying system, has the functions of stopping, adjusting, guiding, preventing counter flow, stabilizing pressure, shunting or overflowing and relieving pressure and the like, and is often used in the industrial production process; for example, a valve is needed to be used on a liquid conveying pipeline, the valve of the existing conveying pipeline is generally driven by a screw rod to realize the closing of a valve core to realize pipeline closure, namely, the valve is a stop valve applied to the conveying pipeline, the existing stop valve is generally only provided with one valve core, a rubber sealing element is coated and fixed on the valve core, and the valve core is sealed by the rubber sealing element; however, the rubber seal has a problem of losing its elasticity due to aging, and a problem of leakage occurs when the rubber seal loses its elasticity.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a zero-leakage stop valve based on multiple sealing, wherein a valve seat of the stop valve is internally provided with a plurality of flow passages, and a plurality of sealing pieces are arranged in the flow passages for effective sealing, so that zero leakage of the stop valve is ensured.
A zero leakage stop valve based on multiple sealing comprises a transverse rectangular valve seat, wherein an isosceles trapezoid boss is formed on the upper end face of the middle part of the valve seat, opposite inlet and outlet holes are formed in two end faces of the valve seat, an inverted V-shaped valve groove is formed in the boss, and two ends of the valve groove are respectively communicated with the inlet and outlet holes in two ends of the valve seat; a bypass hole which is transverse and communicated with the valve groove is formed in the middle of the valve seat, and openings at two ends of the bypass hole are respectively positioned on the inner walls of the two ends of the valve groove, which are close to the inlet and outlet holes; a rectangular sinking platform communicated with the valve groove is formed on the upper end face of the boss, and a vertical valve hole communicated with the bypass hole is formed on the bottom surface of the rectangular sinking platform;
cylindrical valve cores are inserted into the valve grooves on the two sides of the rectangular sinking platform, rubber sealing sleeves are fixed on the valve cores through insertion sleeves, and the rubber sealing sleeves are pressed against the inner walls of the valve grooves; a counter bore is formed in the upper end face of the valve core, an inclined connecting rod is inserted in the counter bore, a lower pin shaft is inserted into the lower end of the connecting rod, and two ends of the lower pin shaft are inserted and fixed on the valve core; a rectangular driving block is inserted in the rectangular sinking platform of the valve seat, cutting grooves are formed in the side walls of the two sides of the driving block, the upper end of a connecting rod is inserted in the cutting grooves of the driving block and is connected with an upper pin shaft in an inserting manner, the two ends of the upper pin shaft are inserted and fixed on the driving block, a valve column is inserted and fixed in the middle of the driving block, and the lower end of the valve column extends out of the driving block and is inserted in the valve hole and located on the upper side of the bypass hole;
the upper end of the valve post extends out of the driving block and is inserted and sleeved with a vertical internal thread sleeve, a retaining ring is formed on the outer wall of the lower end of the internal thread sleeve, an interlocking plate is inserted and sleeved on the internal thread sleeve on the upper side of the retaining ring, a plurality of screws are inserted and connected onto the interlocking plate, and the lower ends of the screws penetrate through the retaining ring and are screwed on the driving block; the linkage plate is inserted with a plurality of connecting columns, studs are formed at two ends of the connecting columns, the studs at the lower ends of the connecting columns are screwed on the bosses, a top plate is inserted on the studs at the upper ends of the connecting columns, nuts are abutted on the upper end surfaces of the top plates, and the nuts are screwed on the studs; the internal thread sleeve is internally screwed with a screw rod, the upper end of the screw rod penetrates through the top plate to form a connector, a handle is inserted into the connector, the lower end face of the top plate is abutted against a limit sleeve, and the limit sleeve is inserted and fixed on the screw rod.
Preferably, the length of the valve core is greater than the diameter of the bypass hole in the valve seat, the valve core is positioned on the upper side of the bypass hole, and the lower end of the valve hole is positioned on the lower side of the bypass hole.
Preferably, an annular sealing groove is formed in the outer wall, close to the lower end, of the valve column, a sealing column sleeve is fixed in the sealing groove in an inserting and sleeving manner, and the length of the sealing column sleeve is larger than the aperture of the bypass hole; the diameter of the spool is equal to the diameter of the valve bore.
Preferably, the lower end of the bypass hole in the valve seat is formed with a pressure stabilizing hole communicated with the valve groove, and two end faces of the valve seat are formed with threaded connecting holes communicated with the inlet and outlet holes.
Preferably, the length of the driving block is greater than the aperture of the valve slot, a rubber sealing gasket is fixedly coated on the outer wall of the driving block, and notches opposite to the cutting slot are formed on two sides of the rubber sealing gasket; the rubber sealing gasket is pressed on the inner side wall of the rectangular sinking platform; and avoidance chutes opposite to the connecting rods are formed on two side walls of the valve groove.
Preferably, the length of the driving block extending out of the boss is greater than the distance from the lower end face of the driving block to the bottom face of the rectangular sinking platform.
Preferably, the number of the connecting columns is at least three, the connecting columns are uniformly distributed in an annular shape around the central axis of the valve column, and clamping grooves are formed in the outer wall, opposite to the lower end of each connecting column, of the connecting columns.
The invention has the beneficial effects that: a plurality of flow passages are arranged in a valve seat of the stop valve, a plurality of sealing pieces are arranged in the flow passages to effectively seal, and then zero leakage of the stop valve is guaranteed.
Drawings
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a side view of the present invention;
fig. 3 is a schematic view of a half-section in the front view direction of the present invention.
In the figure: 1. a valve seat; 11. a boss; 12. an inlet and outlet hole; 13. a valve spool; 14. a bypass orifice; 15. a valve bore; 16. a rectangular sinking platform; 17. avoiding the chute; 18. a pressure stabilizing hole; 19. a threaded connection hole; 2. a valve core; 21. a counter bore; 3. a connecting rod; 4. a rubber sealing sleeve; 5. a spool; 6. sealing the column sleeve; 7. a drive block; 71. grooving; 8. a rubber gasket; 9. connecting columns; 91. a stud; 10. an internal thread sleeve; 101. a retainer ring; 20. a lead screw; 201. a connector; 30. a top plate; 40. a handle; 50. a linkage plate; 60. a nut; 70. a screw; 80. a limiting sleeve.
Detailed Description
The embodiment is as follows: referring to fig. 1 to 3, a zero leakage stop valve based on multiple sealing comprises a transverse rectangular valve seat 1, wherein an isosceles trapezoid boss 11 is formed on the upper end face of the middle part of the valve seat 1, opposite inlet and outlet holes 12 are formed on two end faces of the valve seat 1, an inverted V-shaped valve groove 13 is formed in the boss 11, and two ends of the valve groove 13 are respectively communicated with the inlet and outlet holes 12 at two ends of the valve seat 1; a bypass hole 14 which is transverse and communicated with the valve groove 13 is formed in the middle of the valve seat 1, and openings at two ends of the bypass hole 14 are respectively positioned on the inner walls, close to the inlet and outlet holes 12, of two ends of the valve groove 13; a rectangular sinking platform 16 communicated with the valve groove 13 is formed on the upper end surface of the boss 11, and a vertical valve hole 15 communicated with the bypass hole 14 is formed on the bottom surface of the rectangular sinking platform 16;
the upper end of the valve column 5 extends out of the driving block 7 and is inserted and sleeved with a vertical internal thread sleeve 10, a check ring 101 is formed on the outer wall of the lower end of the internal thread sleeve 10, a linkage plate 50 is inserted and sleeved on the internal thread sleeve 10 on the upper side of the check ring 101, a plurality of screws 70 are inserted and sleeved on the linkage plate 50, and the lower ends of the screws 70 penetrate through the check ring 101 and are in threaded connection with the driving block 7; the linkage plate 50 is spliced with a plurality of connecting posts 9, studs 91 are formed at two ends of each connecting post 9, the studs 91 at the lower ends of the connecting posts 9 are screwed on the bosses 11, the top plate 30 is sleeved on the studs 91 at the upper ends of the connecting posts 9 in a plugging manner, the nut 90 abuts against the upper end surface of the top plate 30, and the nut 90 is screwed on the studs 91; the threaded sleeve 10 is internally screwed with a screw rod 20, the upper end of the screw rod 20 penetrates through the top plate 30 to form a connector 201, a handle 40 is inserted into the connector 201, the lower end face of the top plate 30 abuts against a limiting sleeve 80, and the limiting sleeve 80 is inserted and fixed on the screw rod 20.
The length of the valve core 2 is greater than the aperture of the bypass hole 14 on the valve seat 1, the valve core 2 is positioned at the upper side of the bypass hole 14, and the lower end of the valve hole 15 is positioned at the lower side of the bypass hole 14.
An annular sealing groove is formed in the outer wall, close to the lower end, of the valve column 5, a sealing column sleeve 6 is fixed in the sealing groove in an inserting and sleeving mode, and the length of the sealing column sleeve 6 is larger than the aperture of the bypass hole 14; the diameter of the spool 5 is equal to the diameter of the valve hole 15.
The lower end of a bypass hole 14 in the valve seat 1 is formed with a pressure stabilizing hole 18 communicated with the valve groove 13, and both end faces of the valve seat 1 are formed with threaded connecting holes 19 communicated with the inlet and outlet holes 12.
The length of the driving block 7 is larger than the aperture of the valve slot 13, the outer wall of the driving block 7 is coated and fixed with a rubber sealing gasket 8, and two sides of the rubber sealing gasket 8 are formed with notches opposite to the cutting slot 71; the rubber sealing gasket 8 is pressed on the inner side wall of the rectangular sinking platform 16; two side walls of the valve groove 13 are formed with an avoiding chute 17 opposite to the connecting rod 3.
The length of the driving block 7 extending out of the boss 11 is larger than the distance from the lower end face of the driving block 7 to the bottom face of the rectangular sinking platform 16.
At least three connecting columns 9 are arranged, the connecting columns 9 are uniformly distributed in an annular shape around the central axis of the valve column 5, and clamping grooves 92 are formed in the outer walls of the lower ends of the connecting columns 9 opposite to each other.
The working principle is as follows: the invention is a zero leakage stop valve based on multiple sealing, the stop valve is characterized in that a valve groove 13 and a bypass hole 14 are arranged in a valve seat 1 and are communicated with flow channels of inlet and outlet holes 12 at two ends of the valve seat 1, the middle part of the bypass hole 14 and the middle part of the valve groove 13 are respectively arranged on a driving block 7 and a valve column 5, and a valve core 2 is arranged in the valve groove 13 at two sides of the driving block 7, as shown in figure 3, the stop valve is in an opening state at the moment and can realize flow through the bypass hole 14; when the valve needs to be closed, the screw rod 20 is rotated to drive the driving block 7 to move downwards, the valve post 5 on the driving block 7 moves downwards, and the valve post 5 is used for separating the bypass hole 14; simultaneously, the driving block 7 moves downwards, the pressing of the valve core 2 is driven, the valve core 2 seals two ends of the bypass hole 14, and therefore multiple sealing is achieved, and zero leakage of the stop valve is guaranteed.
The examples are intended to illustrate the invention, but not to limit it. The embodiments may be modified by those skilled in the art without departing from the spirit and scope of the invention, and therefore, the scope of the claims should be determined from that of the invention.
Claims (7)
1. The utility model provides a zero leaks stop valve based on multiple sealed, includes disk seat (1) of horizontal rectangle, the up end shaping at disk seat (1) middle part has isosceles trapezoid's boss (11), its characterized in that: opposite inlet and outlet holes (12) are formed in two end faces of the valve seat (1), an inverted V-shaped valve groove (13) is formed in the boss (11), and two ends of the valve groove (13) are respectively communicated with the inlet and outlet holes (12) in two ends of the valve seat (1); a bypass hole (14) which is transverse and communicated with the valve groove (13) is formed in the middle of the valve seat (1), and openings at two ends of the bypass hole (14) are respectively positioned on the inner walls, close to the inlet and outlet holes (12), of two ends of the valve groove (13); a rectangular sinking platform (16) communicated with the valve groove (13) is formed on the upper end face of the boss (11), and a valve hole (15) which is communicated with the bypass hole (14) and is vertical is formed on the bottom surface of the rectangular sinking platform (16);
cylindrical valve cores (2) are inserted into the valve grooves (13) on the two sides of the rectangular sinking platform (16), rubber sealing sleeves (4) are fixed on the valve cores (2) in an inserting and sleeving manner, and the rubber sealing sleeves (4) are pressed against the inner walls of the valve grooves (13); a counter bore (21) is formed in the upper end face of the valve core (2), an obliquely-arranged connecting rod (3) is inserted in the counter bore (21), a lower pin shaft is inserted at the lower end of the connecting rod (3), and two ends of the lower pin shaft are inserted and fixed on the valve core (2); a rectangular driving block (7) is inserted in a rectangular sinking platform (16) of the valve seat (1), cutting grooves (71) are formed in the side walls of two sides of the driving block (7), the upper end of a connecting rod (3) is inserted in the cutting grooves (71) of the driving block (7) and is inserted with an upper pin shaft, two ends of the upper pin shaft are inserted and fixed on the driving block (7), a valve column (5) is inserted and fixed in the middle of the driving block (7), and the lower end of the valve column (5) extends out of the driving block (7) and is inserted in a valve hole (15) and located on the upper side of a bypass hole (14);
the upper end of the valve column (5) extends out of the driving block (7) and is sleeved with a vertical internal thread sleeve (10), a check ring (101) is formed on the outer wall of the lower end of the internal thread sleeve (10), a linkage plate (50) is sleeved on the internal thread sleeve (10) on the upper side of the check ring (101), a plurality of screws (70) are inserted into the linkage plate (50), and the lower ends of the screws (70) penetrate through the check ring (101) and are screwed on the driving block (7); the linkage plate (50) is spliced with a plurality of connecting columns (9), studs (91) are formed at two ends of each connecting column (9), the studs (91) at the lower ends of the connecting columns (9) are screwed on the bosses (11), the studs (91) at the upper ends of the connecting columns (9) are sleeved with the top plate (30), the upper end face of the top plate (30) is abutted against a nut (60), and the nuts (90) are screwed on the studs (91); the screw rod (20) is connected in the internal thread sleeve (10) in a threaded mode, the upper end of the screw rod (20) penetrates through the top plate (30) to form a connector (201), a handle (40) is connected to the connector (201) in an inserted mode, the lower end face of the top plate (30) abuts against the limiting sleeve (80), and the limiting sleeve (80) is fixed to the screw rod (20) in an inserted mode.
2. The multiple seal based zero-leakage shutoff valve of claim 1, wherein: the length of the valve core (2) is larger than the aperture of a bypass hole (14) in the valve seat (1), the valve core (2) is positioned on the upper side of the bypass hole (14), and the lower end of the valve hole (15) is positioned on the lower side of the bypass hole (14).
3. A multiple seal based zero leak shut off valve according to claim 2 wherein: an annular sealing groove is formed in the outer wall, close to the lower end, of the valve column (5), a sealing column sleeve (6) is fixed in the sealing groove in an inserting and sleeving mode, and the length of the sealing column sleeve (6) is larger than the aperture of the bypass hole (14); the diameter of the valve column (5) is equal to the bore diameter of the valve hole (15).
4. A multiple seal based zero leak shut off valve according to claim 2 wherein: the lower end of a bypass hole (14) in the valve seat (1) is formed with a pressure stabilizing hole (18) communicated with the valve groove (13), and two end faces of the valve seat (1) are formed with threaded connecting holes (19) communicated with the inlet and outlet holes (12).
5. The multiple seal based zero-leakage shutoff valve of claim 1, wherein: the length of the driving block (7) is larger than the aperture of the valve slot (13), a rubber sealing gasket (8) is fixedly coated on the outer wall of the driving block (7), and notches opposite to the cutting slot (71) are formed on two sides of the rubber sealing gasket (8); the rubber sealing gasket (8) is pressed on the inner side wall of the rectangular sinking platform (16); and avoidance chutes (17) opposite to the connecting rod (3) are formed on two side walls of the valve groove (13).
6. The multiple seal based zero-leak shut-off valve of claim 5, wherein: the length of the driving block (7) extending out of the boss (11) is greater than the distance from the lower end face of the driving block (7) to the bottom face of the rectangular sinking platform (16).
7. The multiple seal based zero-leak shut-off valve of claim 1, wherein: the valve is characterized in that at least three connecting columns (9) are arranged, the connecting columns (9) are uniformly distributed in an annular shape around the central axis of the valve column (5), and clamping grooves (92) are formed in the outer wall, opposite to the lower end of each connecting column (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211115966.0A CN115492946B (en) | 2022-09-14 | 2022-09-14 | Zero leakage stop valve based on multiple seals |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211115966.0A CN115492946B (en) | 2022-09-14 | 2022-09-14 | Zero leakage stop valve based on multiple seals |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115492946A true CN115492946A (en) | 2022-12-20 |
| CN115492946B CN115492946B (en) | 2024-05-07 |
Family
ID=84468511
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211115966.0A Active CN115492946B (en) | 2022-09-14 | 2022-09-14 | Zero leakage stop valve based on multiple seals |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115492946B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB901761A (en) * | 1957-06-17 | 1962-07-25 | John Maxwell Sheardown | Improvements in or relating to mixing valves for liquids |
| CN1205065A (en) * | 1995-10-16 | 1999-01-13 | 文卡特什·R·内夫里卡 | Valve |
| CN201599422U (en) * | 2010-01-19 | 2010-10-06 | 浙江沃尔达铜业有限公司 | Double-spool stop valve |
| CN212377312U (en) * | 2020-07-14 | 2021-01-19 | 浙江人一阀门制造有限公司 | Piston type zero-leakage stop valve |
| CN114922986A (en) * | 2022-06-21 | 2022-08-19 | 台州市广易不锈钢阀门有限公司 | High-temperature and high-pressure resistant welding type stop valve |
-
2022
- 2022-09-14 CN CN202211115966.0A patent/CN115492946B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB901761A (en) * | 1957-06-17 | 1962-07-25 | John Maxwell Sheardown | Improvements in or relating to mixing valves for liquids |
| CN1205065A (en) * | 1995-10-16 | 1999-01-13 | 文卡特什·R·内夫里卡 | Valve |
| CN201599422U (en) * | 2010-01-19 | 2010-10-06 | 浙江沃尔达铜业有限公司 | Double-spool stop valve |
| CN212377312U (en) * | 2020-07-14 | 2021-01-19 | 浙江人一阀门制造有限公司 | Piston type zero-leakage stop valve |
| CN114922986A (en) * | 2022-06-21 | 2022-08-19 | 台州市广易不锈钢阀门有限公司 | High-temperature and high-pressure resistant welding type stop valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115492946B (en) | 2024-05-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2017167223A1 (en) | Spool assembly and shut-off valve | |
| CN115492946A (en) | Zero leakage stop valve based on multiple sealing | |
| KR101930393B1 (en) | Plug Valve | |
| CN111120697A (en) | Internal thread ball valve | |
| CN112344046A (en) | Control valve with electromagnetism cuts off fast | |
| CN207961827U (en) | Pipe jointer sealing ring | |
| CN114922986A (en) | High-temperature and high-pressure resistant welding type stop valve | |
| KR101083501B1 (en) | sealant injector for valve | |
| CN208719371U (en) | Easily speed shut-off valve | |
| CN217401998U (en) | Manual flange stop valve | |
| CN102494147A (en) | Quick opening and quick closing adjusting valve | |
| CN214999724U (en) | Novel quick-opening and quick-closing electromagnetic valve | |
| CN210291131U (en) | Plugging valve for flange leakage | |
| CN219796142U (en) | Stop valve case with reflux groove structure | |
| CN209309363U (en) | A kind of PE pipe connection ball valve with multi-sealing function | |
| CN219102186U (en) | Miniature high-pressure liquid path stop valve | |
| CN213871197U (en) | Alloy material valve rod for pipeline installation | |
| CN220980376U (en) | Straight-through stop valve | |
| CN214222109U (en) | Swing check valve | |
| CN216478952U (en) | Quick oil drain valve | |
| CN212455572U (en) | Valve with good sealing effect | |
| CN218267258U (en) | Self-sealing stop valve | |
| CN216407771U (en) | Novel valve element sealing structure | |
| CN220248939U (en) | Ultrahigh-pressure large-caliber unloading stop valve and hydrogen storage system | |
| CN207195795U (en) | A kind of electromagnetic valve unit and combination solenoid valve |
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 | ||
| GR01 | Patent grant |