CN112648399A - Multi-valve-clack adjustable gate valve - Google Patents
Multi-valve-clack adjustable gate valve Download PDFInfo
- Publication number
- CN112648399A CN112648399A CN202110020796.7A CN202110020796A CN112648399A CN 112648399 A CN112648399 A CN 112648399A CN 202110020796 A CN202110020796 A CN 202110020796A CN 112648399 A CN112648399 A CN 112648399A
- Authority
- CN
- China
- Prior art keywords
- valve
- valve body
- slider
- clack
- fixedly connected
- 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
- 241000446313 Lamella Species 0.000 claims abstract 2
- 238000007789 sealing Methods 0.000 claims description 37
- 230000000694 effects Effects 0.000 abstract description 6
- 230000003139 buffering effect Effects 0.000 abstract description 2
- 239000012530 fluid Substances 0.000 abstract description 2
- 230000005540 biological transmission Effects 0.000 abstract 1
- 238000005299 abrasion Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- -1 chemical engineering Substances 0.000 description 1
- 238000003889 chemical engineering Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- F16K3/04—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 pivoted closure members
- F16K3/06—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 pivoted closure members in the form of closure plates arranged between supply and discharge passages
- F16K3/08—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 pivoted closure members in the form of closure plates arranged between supply and discharge passages with circular plates rotatable around their centres
-
- 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
- F16K3/30—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
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/04—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor
- F16K31/041—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor for rotating valves
Abstract
The invention provides a multi-valve-clack adjustable gate valve, and relates to the technical field of valves. This adjustable gate valve of many lamellas, including the valve body, the last fixed surface of valve body is connected with the valve gap, the last fixed surface of valve gap is connected with electric jar, the output fixedly connected with guide bar of electric jar, the one end fixedly connected with slider nut of electric jar is kept away from to the guide bar, there is the slider inside slider nut through round pin axle swing joint, the inside swing joint of slider has the valve rod, the top fixedly connected with slider limiting plate of valve rod, be connected through the screw between slider limiting plate and the valve rod. Realize opening and close of case through the meshing of teeth of a cogwheel, compare traditional gate valve, the effect is fast, saves space, and transmission efficiency is high, through being provided with a plurality of valve clacks, realizes opening and close of case jointly, and the split flow hole of valve pocket bore crescent and valve clack support all has good effect to fluid shear and buffering, and the sealed effect of circular arc curved surface is better.
Description
Technical Field
The invention relates to the technical field of valves, in particular to a multi-valve-clack adjustable gate valve.
Background
The gate valve is a valve which uses a gate plate as an opening and closing element and realizes the connection and disconnection of medium flow by moving along the vertical direction of the central line of an internal flow passage of the valve. The gate valve is used for fully opening or fully closing and cutting off on a pipeline, generally, the gate valve is not used for adjusting flow, the gate valve is sealed through contact of a valve seat and a gate plate, metal materials can be deposited on a sealing surface to increase abrasion resistance, and the gate valve is divided into a rigid gate valve and an elastic gate valve according to different gate plates.
Erosion and abrasion are easily caused between sealing surfaces of the traditional gate valve, and the maintenance is difficult. The overall dimension is great, opens and needs certain space, and the switching time is long, can't respond fast, and the structure is more complicated, is difficult for realizing different apertures moreover, and operating torque is great.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a multi-valve-clack adjustable gate valve, which solves the problems that the gate valve cannot be quickly switched on and off and different opening degrees cannot be realized.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme: a valve cover is fixedly connected to the upper surface of the valve body, an electric cylinder is fixedly connected to the upper surface of the valve cover, a guide rod is fixedly connected to the output end of the electric cylinder, a slider nut is fixedly connected to one end, away from the electric cylinder, of the guide rod, a slider is movably connected to the interior of the slider nut through a pin shaft, a valve rod is movably connected to the interior of the slider, a slider limiting plate is fixedly connected to the upper portion of the valve rod, and the slider limiting plate is connected with the valve rod through a screw;
a valve clack support is arranged in the valve body, the valve rod is connected with the valve clack support in a screwing mode through threads, the side surface of the valve clack support is movably connected with a valve clack through a pin, the number of the valve clacks is five, an arc-shaped rack is arranged on one side of the valve clack, an inner gear ring is arranged in the valve clack support, and the inner gear ring is meshed with the arc-shaped rack;
the valve rod, the valve clack support, the pin, the valve clack and the inner gear ring form a valve core, a valve core sealing piece is arranged on the inner wall of the valve body, a valve core sealing ring is arranged at one end, far away from the valve body, of the valve core sealing piece, and the valve core sealing piece and the valve core sealing ring are both located between the valve body and the valve core.
Preferably, the valve gap includes the valve cap base, the upper surface of valve cap base is provided with square platform, the upper surface of valve cap base and the right side that is located square platform are provided with the arch shell, the valve gap passes through bolt and nut and valve body fixed connection, the upper surface and the electric jar fixed connection of square platform.
Preferably, the square platform is fixedly connected with the valve body through a valve cover screw, a triangular rib plate is arranged on the lower surface of the square platform, and one end, far away from the square platform, of the triangular rib plate is fixedly connected with the valve body.
Preferably, the cross-sectional shape of the valve rod is square, and the valve rod is positioned inside the sliding block.
Preferably, the left side and the right side of the valve body are respectively provided with an inlet and an outlet, the central lines of the inlet, the outlet and the valve core are positioned on the same horizontal line, the inner walls of the inlet and the outlet are provided with valve body sealing rings, and a valve body sealing piece is arranged inside the valve body sealing rings.
Preferably, an arc plane is arranged at one end, far away from the arc rack, of the valve clack, the valve clacks are sealed in a nested mode through arc curved surfaces, and the valve clack support is provided with a plurality of shunting holes corresponding to the valve clacks.
Preferably, the inside of square platform sets up in the square hole, the inside and valve rod, slider swing joint in square hole.
Preferably, the valve core sealing element is positioned at a convex shoulder of the valve body, grooves are formed in the front end and the rear end of the valve body, and the inner portion of each groove is fixedly connected with the sealing ring of the valve body.
The working principle is as follows: before using, through being connected respectively in the pipeline with import 101 and export 102, when being in the encapsulated situation, closely laminating between the valve clack 73, through starting electric cylinder 10, through moving guide bar 6 left, drive valve rod 71 is to the left swing in valve body 1, and then, valve rod 71 drives valve clack support 72 and rotates, thereby makes valve clack 71 open, controls the degree that the gate valve opened through the displacement of control guide bar 6, when closing, electric cylinder 10 drives the guide bar and moves right, thereby makes valve clack 73 close.
(III) advantageous effects
The invention provides a multi-valve-clack adjustable gate valve. The method has the following beneficial effects:
1. according to the invention, the valve core is opened and closed by meshing the gear teeth, and compared with the traditional gate valve, the gate valve has the advantages of fast action, space saving and high transfer efficiency.
2. According to the invention, the valve core is opened and closed together by arranging the valve clacks, the caliber of the valve cavity is gradually increased, the flow dividing holes of the valve clack support have good effects on fluid shearing and buffering, and the arc curved surface sealing effect is better.
3. According to the invention, through the electric cylinder, the guide rod is connected with the valve rod through the slide block, so that the direct motion is effectively the rotation of the valve clack, the moment of the control device and the movement distance of the valve core are greatly reduced, the valve volume is reduced, the cost is saved, and the valve can be widely applied to the fields of petroleum, chemical engineering, water conservancy and the like.
Drawings
FIG. 1 is a schematic view of the internal structure of the present invention;
FIG. 2 is a left side view of the present invention;
FIG. 3 is a schematic view of the overall structure of the present invention;
FIG. 4 is a front view of the valve cartridge of the present invention in a closed condition;
FIG. 5 is a rear view of the valve cartridge of the present invention in a closed position;
FIG. 6 is a schematic view of the valve flap support structure of the present invention;
FIG. 7 is an elevational view of the valve flap construction of the present invention;
FIG. 8 is a rear view of the valve flap structure of the present invention;
FIG. 9 is a left side elevation view of the present invention;
FIG. 10 is a schematic view of the slider and valve stem installation of the present invention.
Wherein, 1, a valve body; 101. an inlet; 102. an outlet; 2. a valve body sealing ring; 3. a valve body seal; 4. a valve cover; 5. a bolt; 6. a nut; 7. a valve core; 71. a valve stem; 72. a valve flap support; 73. a valve flap; 74. a pin; 75. an inner gear ring; 8. a spool seal; 9. a valve core sealing ring; 10. an electric cylinder; 11. a bonnet screw; 12. a slider nut; 13. a pin shaft; 14. a slider; 15. a screw; 16. and the slide block is provided with a limit plate.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example (b):
as shown in fig. 1-10, an embodiment of the present invention provides a multi-clack adjustable gate valve, which includes a valve body 1, a main body of the gate valve, a valve cover 4 fixedly connected to an upper surface of the valve body 1, the gate valve is sealed, the valve cover 4 comprises a valve cover base, a square table is arranged on the upper surface of the valve cover base and used for placing the electric cylinder 10, the inside of the square table is arranged in a square hole, the inside of the square hole is movably connected with the valve rod 71 and the sliding block 14, so that the valve rod 71 can go deep into the valve body 1, the square table is fixedly connected with the valve body 1 through a valve cover screw 11, a triangular rib plate is arranged on the lower surface of the square table, the valve cover is characterized in that the square platform is supported, one end, far away from the square platform, of the triangular rib plate is fixedly connected with the valve body 1, an arch-shaped shell is arranged on the upper surface of the valve cover base and on the right side of the square platform, the valve cover 4 is fixedly connected with the valve body 1 through a bolt 5 and a nut 6, and the upper surface of the square platform is fixedly connected with the electric cylinder 10.
The last fixed surface of valve gap 4 is connected with electric jar 10, provide the power of back-and-forth movement, the output fixedly connected with guide bar of electric jar 10, transmit power, the one end fixedly connected with slider nut 12 of electric jar 10 is kept away from to the guide bar, there is slider 14 inside through round pin axle 13 swing joint of slider nut 12, the inside swing joint of slider 14 has valve rod 71, promote the guide bar and move, thereby make slider 14 slide, valve rod 71 offsets, make valve clack support 72 rotate, the cross sectional shape of valve rod 71 is square, valve rod 71 is located the inside of slider 14, the top fixedly connected with slider limiting plate 16 of valve rod 71, be connected through screw 15 between slider limiting plate 16 and the valve rod 71.
A valve flap support 72 is arranged in the valve body 1, the valve rod 71 is connected with the valve flap support 72 in a screwing manner through threads, the side surface of the valve flap support 72 is movably connected with five valve flaps 73 through pins 74, an arc-shaped rack is arranged on one side of each valve flap 73, the valve flap support 72 rotates, then the inner gear rings 75 rotate, then the valve flaps 73 rotate through the attachment of the arc-shaped racks on the valve flaps 73 to regulate the flow of the gate valve, an arc-shaped plane is arranged at one end, far away from the arc-shaped racks, of each valve flap 73, the valve flaps 73 are sealed through arc-shaped curved surface nesting, circulation holes are sealed to prevent liquid circulation, a plurality of shunting holes are formed in the valve flap support 72 corresponding to the valve flaps 73 to facilitate the circulation of the slide ways, the inner gear rings 75 are arranged in the valve flap support 72 and meshed with the arc-shaped racks to, And (5) controlling.
The valve rod 71, the valve clack bracket 72, the pin 74, the valve clack 73 and the inner gear ring 75 form a valve core 7 for controlling the circulation of a gate valve, a valve core sealing piece 8 is arranged on the inner wall of the valve body 1, the valve core sealing piece 8 is positioned at a convex shoulder of the valve body 1, grooves are respectively arranged at the front end and the rear end of the valve body 1, the inner parts of the grooves are fixedly connected with a valve body sealing ring 2, a valve core sealing ring 9 is arranged at one end of the valve core sealing piece 8 far away from the valve body 1, the valve core sealing piece 8 and the valve core sealing ring 9 are both positioned between the valve body 1 and the valve core 7, the valve core sealing ring 9, the valve core sealing ring 8 and the valve clack 73 realize the sealing between an inlet 101 and an outlet 102 in a closed state, the left side and the right side of the valve body 1 are respectively provided with an, sealing between the valve body and the pipeline is realized; the valve body sealing member 3 has the same inner diameter as that of the valve element 7 in the fully opened state.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The utility model provides an adjustable gate valve of many lamellas, includes valve body (1), its characterized in that: the valve cover (4) is fixedly connected to the upper surface of the valve body (1), the electric cylinder (10) is fixedly connected to the upper surface of the valve cover (4), the guide rod is fixedly connected to the output end of the electric cylinder (10), the end, far away from the electric cylinder (10), of the guide rod is fixedly connected with a slider nut (12), a slider (14) is movably connected to the interior of the slider nut (12) through a pin shaft (13), a valve rod (71) is movably connected to the interior of the slider (14), a slider limiting plate (16) is fixedly connected to the upper portion of the valve rod (71), and the slider limiting plate (16) is connected with the valve rod (71) through a screw (15);
a valve clack support (72) is arranged in the valve body (1), the valve rod (71) is connected with the valve clack support (72) in a screwing mode through threads, the side surface of the valve clack support (72) is movably connected with valve clacks (73) through pins (74), the number of the valve clacks (73) is five, an arc-shaped rack is arranged on one side of each valve clack (73), an inner gear ring (75) is arranged in the valve clack support (72), and the inner gear ring (75) is meshed with the arc-shaped rack;
the valve rod (71), the valve clack support (72), the pin (74), the valve clack (73) and the inner gear ring (75) form a valve core (7), a valve core sealing piece (8) is arranged on the inner wall of the valve body (1), a valve core sealing ring (9) is arranged at one end, far away from the valve body (1), of the valve core sealing piece (8), and the valve core sealing piece (8) and the valve core sealing ring (9) are located between the valve body (1) and the valve core (7).
2. The multi-petal adjustable gate valve of claim 1, wherein: valve gap (4) include the valve cover base, the upper surface of valve cover base is provided with square platform, the upper surface of valve cover base and the right side that is located square platform are provided with the arch shell, valve gap (4) are through bolt (5) and nut (6) and valve body (1) fixed connection, the upper surface and electric jar (10) fixed connection of square platform.
3. The multi-petal adjustable gate valve of claim 2, wherein: the square platform is fixedly connected with the valve body (1) through a valve cover screw (11), a triangular rib plate is arranged on the lower surface of the square platform, and one end, far away from the square platform, of the triangular rib plate is fixedly connected with the valve body (1).
4. The multi-petal adjustable gate valve of claim 1, wherein: the cross section of the valve rod (71) is square, and the valve rod (71) is positioned inside the sliding block (14).
5. The multi-petal adjustable gate valve of claim 1, wherein: the valve is characterized in that an inlet (101) and an outlet (102) are respectively arranged on the left side and the right side of the valve body (1), the central lines of the inlet (101), the outlet (102) and the valve core (7) are located on the same horizontal line, valve body sealing rings (2) are arranged on the inner walls of the inlet (101) and the outlet (102), and a valve body sealing piece (3) is arranged inside the valve body sealing ring (2).
6. The multi-petal adjustable gate valve of claim 1, wherein: an arc plane is arranged at one end, far away from the arc rack, of the valve clack (73), the valve clack (73) is sealed in a nested mode through an arc curved surface, and a plurality of shunting holes are formed in the valve clack support (72) corresponding to the valve clack (73).
7. The multi-petal adjustable gate valve of claim 2, wherein: the inside of square platform sets up in the square hole, the inside and valve rod (71), slider (14) swing joint in square hole.
8. The multi-petal adjustable gate valve of claim 1, wherein: the valve core sealing piece (8) is located at a convex shoulder of the valve body (1), grooves are formed in the front end and the rear end of the valve body (1), and the inner portion of each groove is fixedly connected with the valve body sealing ring (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110020796.7A CN112648399A (en) | 2021-01-07 | 2021-01-07 | Multi-valve-clack adjustable gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110020796.7A CN112648399A (en) | 2021-01-07 | 2021-01-07 | Multi-valve-clack adjustable gate valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112648399A true CN112648399A (en) | 2021-04-13 |
Family
ID=75367590
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110020796.7A Pending CN112648399A (en) | 2021-01-07 | 2021-01-07 | Multi-valve-clack adjustable gate valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112648399A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105351545A (en) * | 2015-12-09 | 2016-02-24 | 长沙盛泓机械有限公司 | Circular discharge valve used for koji production line |
| CN107076317A (en) * | 2014-09-30 | 2017-08-18 | 日本电产科宝株式会社 | Volume control device and vehicle |
| CN109442049A (en) * | 2018-11-12 | 2019-03-08 | 江苏中科睿赛污染控制工程有限公司 | A kind of Electric air valve with gear |
| CN210510341U (en) * | 2019-09-23 | 2020-05-12 | 浙江捷亨环境科技有限公司 | Rotary opening and closing structure |
| CN211259697U (en) * | 2019-12-11 | 2020-08-14 | 浙江星月电器有限公司 | Air valve and fresh air fan using same |
| CN111828664A (en) * | 2020-06-24 | 2020-10-27 | 浙江富春江水电设备有限公司 | Cutoff valve convenient for hydraulic transition and control for tubular turbine |
-
2021
- 2021-01-07 CN CN202110020796.7A patent/CN112648399A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107076317A (en) * | 2014-09-30 | 2017-08-18 | 日本电产科宝株式会社 | Volume control device and vehicle |
| CN105351545A (en) * | 2015-12-09 | 2016-02-24 | 长沙盛泓机械有限公司 | Circular discharge valve used for koji production line |
| CN109442049A (en) * | 2018-11-12 | 2019-03-08 | 江苏中科睿赛污染控制工程有限公司 | A kind of Electric air valve with gear |
| CN210510341U (en) * | 2019-09-23 | 2020-05-12 | 浙江捷亨环境科技有限公司 | Rotary opening and closing structure |
| CN211259697U (en) * | 2019-12-11 | 2020-08-14 | 浙江星月电器有限公司 | Air valve and fresh air fan using same |
| CN111828664A (en) * | 2020-06-24 | 2020-10-27 | 浙江富春江水电设备有限公司 | Cutoff valve convenient for hydraulic transition and control for tubular turbine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205207765U (en) | Tee bend flow divider | |
| CN208907502U (en) | A kind of Novel regulating valve valve actuator | |
| CN108105401A (en) | A kind of low torque, bi-direction zero-leakage all-metal sealing dish valve | |
| CN112648399A (en) | Multi-valve-clack adjustable gate valve | |
| CN104180055A (en) | Pilot control gate valve | |
| CN209557715U (en) | A kind of adjustable check valve | |
| CN205841823U (en) | A kind of pottery steam valve | |
| CN207333757U (en) | A kind of fuel charger shut-off valve | |
| CN112943978A (en) | Double helix line switching-over structure of multichannel plunger valve | |
| CN201420878Y (en) | Low hydraulic resistance track type plunger valve | |
| CN202360791U (en) | Novel arc cut-off and control valve | |
| CN103375595A (en) | Zero-friction bidirectional metal seal butterfly valve | |
| CN220168617U (en) | Soft sealing gate valve with low torque force | |
| CN216519634U (en) | Anti-sticking is dead manual butterfly valve | |
| CN215980834U (en) | High-temperature and high-pressure stop valve based on combined valve cap | |
| CN215110591U (en) | Parallel expanding gate valve | |
| CN213744999U (en) | Corrosion-resistant disc valve | |
| CN205026127U (en) | Sealed section of thick bamboo valve that revolves | |
| CN203131044U (en) | Shutoff valve with valve sleeve capable of reducing cavitation damage | |
| CN113531142B (en) | Air-float cock valve | |
| CN204213368U (en) | A kind of based on the multi-functional butterfly plate of electric planer formula axle construction improvement and the butterfly valve of formation thereof | |
| CN209430836U (en) | A kind of large torque hydraulic executer | |
| CN211423424U (en) | Double-valve-plate gate valve for pneumatic conveying system | |
| CN204004475U (en) | A kind of piston type stop valve | |
| CN209483991U (en) | A kind of double valve block structures |
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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210413 |
|
| RJ01 | Rejection of invention patent application after publication |