CN117515188A - Blind plate valve and use method - Google Patents
Blind plate valve and use method Download PDFInfo
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- CN117515188A CN117515188A CN202410010616.0A CN202410010616A CN117515188A CN 117515188 A CN117515188 A CN 117515188A CN 202410010616 A CN202410010616 A CN 202410010616A CN 117515188 A CN117515188 A CN 117515188A
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- plate
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- 238000000034 method Methods 0.000 title claims abstract description 10
- 230000000149 penetrating effect Effects 0.000 claims abstract description 11
- 230000007246 mechanism Effects 0.000 claims description 66
- 238000007789 sealing Methods 0.000 claims description 17
- 230000002035 prolonged effect Effects 0.000 abstract description 4
- 238000004891 communication Methods 0.000 description 5
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 230000002441 reversible effect Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 241000883990 Flabellum Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
Abstract
The invention belongs to the technical field of valves, and particularly relates to a blind plate valve and a use method thereof, wherein the blind plate valve is provided with a valve body and a valve plate device; the valve plate device is arranged in the valve body in a penetrating way and is suitable for moving in the valve body so as to open or close the valve body device; the valve plate means being adapted to perform a pre-actuation and fine position adjustment as the valve plate means moves within the valve body; the pre-starting device has the advantages that pre-starting is carried out when the valve plate device starts to move, the required motor torque is reduced, the impact between the gear and the chain is avoided when the valve plate device starts to move, the damage of the valve plate device caused by the impact is avoided, and the service life of the valve plate device is prolonged.
Description
Technical Field
The invention belongs to the technical field of valves, and particularly relates to a blind plate valve and a using method thereof.
Background
The size of blind plate valve is comparatively huge, need use mechanisms such as motor to drive when needs open or close the blind plate valve, because the size and the weight of blind plate valve are comparatively huge, the motor need provide very high moment of torsion when the stationary valve plate of drive begins to remove to cause the collision of the gear that is used for driving the valve plate and the chain on the valve plate easily, the long-time repeated use causes the damage of gear and rack because of the collision even damage.
Therefore, based on the technical problems, a new blind plate valve and a using method thereof are needed to be designed.
Disclosure of Invention
The invention aims to provide a blind plate valve and a using method thereof.
In order to solve the above technical problems, the present invention provides a blind plate valve, including:
a valve body and a valve plate device;
the valve plate device is arranged in the valve body in a penetrating way and is suitable for moving in the valve body so as to open or close the valve body device;
the valve plate means is adapted to perform pre-actuation and fine position adjustment as the valve plate means moves within the valve body.
Further, a first through hole and a second through hole are formed in the valve body;
the first through hole is perpendicular to the second through hole;
the valve plate device is arranged in the second through hole in a penetrating way so as to open or close the first through hole.
Further, the valve plate apparatus includes: the driving mechanism, the moving mechanism and the blind plate mechanism;
the blind plate mechanism is arranged on the moving mechanism;
the moving mechanism is arranged in the second through hole;
the driving mechanism is connected with the moving mechanism;
the driving mechanism is suitable for driving the moving mechanism to move in the second through hole.
Further, the driving mechanism includes: the first driving motor, the outer sleeve, the fan blades and the air chambers are arranged at two ends of the moving mechanism;
the driving end of the first driving motor is connected with the fan blade;
the outer sleeve is arranged outside the first driving motor, and the outer sleeve covers the fan blades;
the outer sleeve is respectively communicated with the two air chambers;
the outer sleeve is provided with an air inlet.
Further, a groove is formed in the shell of the first driving motor, a baffle plate is slidably arranged in the groove, and the baffle plate is suitable for opening or closing the air inlet.
Further, an annular groove is formed in the outer wall of the air chamber, and the annular groove is communicated with the inside of the air chamber;
the moving mechanism extends into the annular groove.
Further, the driving mechanism further includes: a second drive motor and a gear;
the gear is connected with the moving mechanism;
the second driving mechanism is connected with the gear.
Further, the moving mechanism includes: a frame;
the frame is arranged in the second through hole in a penetrating way;
the blind plate mechanism is arranged on the frame;
two ends of the transverse edge of the bottom of the frame extend into the annular grooves of the corresponding air chambers;
a chain is arranged on the transverse edge of the bottom of the frame, and the chain is meshed with the gear.
Further, a plurality of rollers are arranged on the inner wall of the second through hole;
the roller is in contact with the frame.
Further, the blind plate mechanism includes: a first blind plate and a second blind plate;
the first blind plate and the second blind plate are arranged on the frame side by side;
a third through hole is formed in the second blind plate, and the third through hole is matched with the first through hole;
the first blind plate is matched with the first through hole.
Further, sealing grooves matched with the first through holes are formed in the first blind plate and the second blind plate;
a sealing ring is arranged in the sealing groove;
the seal groove is communicated with the air chamber.
On the other hand, the invention also provides a using method adopted by the blind plate valve, which comprises the following steps:
opening or closing the valve body by movement of the valve plate device;
the valve plate means is pre-activated when starting the movement and fine-tuned when moving to the corresponding position.
The invention has the beneficial effects that the invention passes through the valve body and the valve plate device; the valve plate device is arranged in the valve body in a penetrating way and is suitable for moving in the valve body so as to open or close the valve body device; the valve plate means being adapted to perform a pre-actuation and fine position adjustment as the valve plate means moves within the valve body; the pre-starting device has the advantages that pre-starting is carried out when the valve plate device starts to move, the required motor torque is reduced, the impact between the gear and the chain is avoided when the valve plate device starts to move, the damage of the valve plate device caused by the impact is avoided, and the service life of the valve plate device is prolonged.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and drawings.
In order to make the above objects, features and advantages of the present invention more comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic illustration of a blind plate valve of the present invention;
fig. 2 is a schematic structural view of the valve plate apparatus of the present invention;
FIG. 3 is a schematic view of the structure of a first blind plate of the present invention;
FIG. 4 is a schematic view of the structure of the air cell of the present invention;
FIG. 5 is a schematic view of the driving mechanism of the present invention;
FIG. 6 is a cross-sectional view of the drive mechanism of the present invention;
fig. 7 is a schematic structural view of the valve body of the present invention.
In the figure:
1, a valve body, 11 a first through hole, 12 a second through hole and 13 idler wheels;
2 valve plate device, 21 first driving motor, 211 outer sleeve, 212 flabellum, 213 baffle, 22 air chambers, 221 annular, 23 second driving motor, 231 gear, 24 frame, 241 chain, 25 first blind plate, 26 second blind plate, 261 third through-hole, 27 sealing washer.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Embodiment 1 as shown in fig. 1 to 7, embodiment 1 provides a blind plate valve, including: a valve body 1 and a valve plate device 2; the valve plate device 2 is arranged in the valve body 1 in a penetrating way, and the valve plate device 2 is suitable for moving in the valve body 1 so as to open or close the valve body 1; the valve plate device 2 is adapted to perform a pre-actuation and a fine adjustment of the position when the valve plate device 2 is moved within the valve body 1; the pre-starting is realized when the valve plate device 2 starts to move, the required motor torque is reduced, the impact between the gear 231 and the chain 241 when the valve plate device 2 starts to move is avoided, the damage of the valve plate device 2 caused by the impact is avoided, and the service life of the valve plate device 2 is prolonged.
In this embodiment, the valve body 1 is provided with a first through hole 11 and a second through hole 12; the first through hole 11 is perpendicular to the second through hole 12; the valve plate device 2 is penetrated in the second through hole 12 to open or close the first through hole 11; when the first through hole 11 is opened, the blind plate valve is in an open state, and mediums such as liquid can flow through the first through hole 11, and when the first through hole 11 is closed, the blind plate valve is in a closed state, and the mediums are blocked by the valve plate device 2; the communication of the first through hole 11 with the second through hole 12 may facilitate the movement of the valve plate apparatus 2, facilitating the opening or closing of the first through hole 11 by the valve plate apparatus 2.
In the present embodiment, the valve plate apparatus 2 includes: the driving mechanism, the moving mechanism and the blind plate mechanism; the blind plate mechanism is arranged on the moving mechanism; the moving mechanism is disposed in the second through hole 12; the driving mechanism is connected with the moving mechanism; the driving mechanism is adapted to drive the moving mechanism to move in the second through hole 12; when the moving mechanism moves, the blind plate mechanism can be driven to move, so that the blind plate mechanism opens or closes the first through hole 11.
In this embodiment, the driving mechanism includes: the first driving motor 21, the outer sleeve 211, the fan blades 212 and the air chambers 22 arranged at two ends of the moving mechanism; the driving end of the first driving motor 21 is connected with the fan blade 212; the outer sleeve 211 is arranged outside the first driving motor 21, and the outer sleeve 211 is covered outside the fan blades 212; the outer sleeve 211 is respectively communicated with the two air chambers 22; the outer sleeve 211 is provided with an air inlet; the first driving motor 21 can drive the fan to rotate, when the fan rotates, air can be introduced into the corresponding air chamber 22, the air chamber 22 and the outer sleeve 211 can be communicated in a hose mode, an electromagnetic valve and the like can be arranged at the position where the air chamber 22 and the outer sleeve 211 are communicated, and the outer sleeve 211 and the air chamber 22 can be controlled to be respectively communicated through the electromagnetic valve; the air pressure in the air chamber 22 can be increased by introducing air into the air chamber 22, the frame 24 connected in the air chamber 22 can be moved through the increase of the air pressure, before the frame 24 needs to be driven to move to open or close the first through hole 11, the frame 24 can be moved in advance through the increase of the air pressure, the pre-starting is completed, the torque required by the second driving motor 23 is reduced, the second driving motor 23 does not need to drive the frame 24 to move from a static state through the torque of the second driving motor, and the gear 231 is prevented from colliding with the chain 241.
In this embodiment, a groove is formed in the housing of the first driving motor 21, a baffle 213 is slidably disposed in the groove, and the baffle 213 is adapted to open or close the air inlet; the grooves can be formed in the wall thickness of the first driving motor 21, the baffle 213 can be driven to move by an external driving source such as an air cylinder, and the air pressure in the air chamber 22 can be kept unchanged when the air inlet is blocked by the baffle 213; when the first driving motor 21 drives the fan to rotate in the forward and reverse directions, the air in the air chamber 22 can be ventilated or the air in the air chamber 22 can be pumped out.
In this embodiment, an annular groove 221 is formed on the outer wall of the air chamber 22, and the annular groove 221 is communicated with the inside of the air chamber 22; the moving mechanism extends into the ring groove 221; the inner wall of the ring groove 221 is tightly contacted with one end of the bottom edge of the frame 24, so that gas leakage is avoided, the space between the inner wall of the ring groove 221 and one end of the bottom edge of the frame 24 can be filled with flexible rubber, so that the frame 24 can be kept in a sealed state when moving in the ring groove 221, and the movement of the frame 24 can be facilitated by the flexible rubber; when the air pressure in the air chamber 22 increases, one end of the bottom edge of the frame 24 can be pushed out of the annular groove 221, so that the frame 24 moves, and the starting torque required by the second driving motor 23 is reduced.
In this embodiment, the driving mechanism further includes: a second drive motor 23 and a gear 231; the gear 231 is connected with the moving mechanism; the second driving mechanism is connected with the gear 231; conventionally, when the frame 24 starts to move, because of the weight of the frame 24 and the first blind plate 25 and the second blind plate 26, and the obstruction caused by the flowing medium, the frame 24 needs to provide huge torque by the second driving motor 23 when the frame 24 starts to move, the second driving motor 23 can collide with the chain 241 when providing the torque required when the frame 24 starts to move from rest, the torque is changed from small to large, and when the torque starts to increase, the second driving motor 23 can drive the gear 231 to contact with the chain 241 due to the possible gap between the gear 231 and the chain 241, but at the moment, the torque can not drive the chain 241 to move, namely the frame 24 to move, so that the gear 231 collides with the chain 241, and the gear 231 can be damaged due to collision; the frame 24 can be directly driven to move from a static state to the beginning by the change of the air pressure in the air chamber 22, so that the gear 231 cannot collide with the chain 241; the air cell 22 moves along with the frame 24 when the second driving motor 23 drives the gear 231 to rotate to drive the frame 24 to move.
In this embodiment, if the state at this time is that the third through hole 261 is aligned with the first through hole 11, the blind plate valve is in an open state, at this time, the blind plate valve needs to be closed, the first driving motor 21 starts to drive the fan blade 212 to rotate, the air flow generated by the rotation of the fan blade 212 is directed to the air chamber 22 corresponding to the first blind plate 25, at this time, the outer sleeve 211 is not communicated with the other air chamber 22, the air pressure in the air chamber 22 increases, so that the frame 24 starts to move, after the frame 24 starts to move, the second driving motor 23 starts to drive the gear 231 to rotate, the chain 241 is driven to move, so that the frame 24 starts to move, the torque required by the second driving motor 23 is reduced, the first blind plate 25 is gradually moved to block the first through hole 11, the second driving motor 23 is closed when the frame 24 drives the first blind plate 25 to block the first through hole 11, at this time, the air in the corresponding air chamber 22 can be driven by the first driving motor 21 to discharge the air in reverse direction, the air in the air chamber 22 is reduced, the length of the bottom edge of the frame 24 extending into the corresponding annular groove 221 is increased when the air pressure is reduced, the frame 24 starts to move slightly, the frame 24 starts to move, the torque is ensured, the torque required by the second driving motor 23 needs to move more precisely, the second blind plate 25 needs to move, and the second driving motor 23 needs to move reversely, and the frame 24 is required to move reversely, and has a high torque required to move the second driving motor 23, and has a high requirement, and has high requirement to drive torque, and has high requirement and high precision.
In this embodiment, the moving mechanism includes: a frame 24; the frame 24 is arranged in the second through hole 12 in a penetrating way; the blind plate mechanism is arranged on the frame 24; two ends of the transverse edge of the bottom of the frame 24 extend into the annular grooves 221 of the corresponding air chambers 22; a chain 241 is arranged on the transverse edge of the bottom of the frame 24, and the chain 241 is meshed with the gear 231; the second driving motor 23 drives the gear 231 to rotate and drives the frame 24 to move through the chain 241, so that the first blind plate 25 and the second blind plate 26 can move to the first through hole 11 according to the requirement, and the first through hole 11 is opened or closed.
In this embodiment, a plurality of rollers 13 are disposed on the inner wall of the second through hole 12; the roller 13 is in contact with the frame 24; the roller 13 may assist in the movement of the frame 24.
In this embodiment, the blind plate mechanism includes: a first blind plate 25 and a second blind plate 26; the first blind plate 25 and the second blind plate 26 are arranged on the frame 24 side by side; a third through hole 261 is formed in the second blind plate 26, and the third through hole 261 is adapted to the first through hole 11; the first blind plate 25 is adapted to the first through hole 11; the first and second blind plates 25 and 26 correspond to the adjacent air cells 22, respectively.
In this embodiment, seal grooves adapted to the first through holes 11 are formed on the first blind plate 25 and the second blind plate 26; a sealing ring 27 is arranged in the sealing groove; the seal groove is communicated with the air chamber 22; the sealing groove is communicated with the two air chambers 22, and the sealing groove is communicated with the air chambers 22 through electromagnetic valve control; when the air pressure is increased by introducing air into the air chamber 22, when the air pressure reaches the set highest value, the electromagnetic valve between the air chamber 22 and the sealing groove is opened, so that the air in the air chamber 22 is introduced into the sealing groove, the situation that the frame 24 is pushed out of the annular groove 221 due to the overlarge air pressure in the air chamber 22 is avoided, and the movement of the frame 24 is influenced because the sealing ring 27 is possibly tightly connected with the valve body 1 after long-time use, and the sealing ring 27 and the valve body 1 can be blown open by introducing air into the sealing groove, so that the influence of the sealing ring 27 on the movement of the frame 24 is avoided.
Embodiment 2, on the basis of embodiment 1, embodiment 2 further provides a use method adopted by the blind plate valve in embodiment 1, including: opening or closing the valve body 1 by the movement of the valve plate device 2; the valve plate device 2 is pre-started when starting the movement and the valve plate device 2 is fine-tuned when moving to the corresponding position.
In summary, the present invention is provided by the valve body 1 and the valve plate device 2; the valve plate device 2 is arranged in the valve body 1 in a penetrating way, and the valve plate device 2 is suitable for moving in the valve body 1 so as to open or close the valve body 1; the valve plate device 2 is adapted to perform a pre-actuation and a fine adjustment of the position when the valve plate device 2 is moved within the valve body 1; the pre-starting is realized when the valve plate device 2 starts to move, the required motor torque is reduced, the impact between the gear 231 and the chain 241 when the valve plate device 2 starts to move is avoided, the damage of the valve plate device 2 caused by the impact is avoided, and the service life of the valve plate device 2 is prolonged.
The components (components not illustrating specific structures) selected in the application are all common standard components or components known to those skilled in the art, and the structures and principles of the components are all known to those skilled in the art through technical manuals or through routine experimental methods.
In the description of embodiments of the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the several embodiments provided in this application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. The above-described apparatus embodiments are merely illustrative, for example, the division of the units is merely a logical function division, and there may be other manners of division in actual implementation, and for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be through some communication interface, device or unit indirect coupling or communication connection, which may be in electrical, mechanical or other form.
The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in the embodiments of the present invention may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit.
With the above-described preferred embodiments according to the present invention as an illustration, the above-described descriptions can be used by persons skilled in the relevant art to make various changes and modifications without departing from the scope of the technical idea of the present invention. The technical scope of the present invention is not limited to the description, but must be determined according to the scope of claims.
Claims (10)
1. A blind plate valve, comprising:
a valve body and a valve plate device;
the valve plate device is arranged in the valve body in a penetrating way and is suitable for moving in the valve body so as to open or close the valve body device;
the valve plate means being adapted to perform a pre-actuation and fine position adjustment as the valve plate means moves within the valve body;
the valve body is provided with a first through hole and a second through hole;
the first through hole is perpendicular to the second through hole;
the valve plate device is arranged in the second through hole in a penetrating way so as to open or close the first through hole;
the valve plate device includes: the driving mechanism, the moving mechanism and the blind plate mechanism;
the blind plate mechanism is arranged on the moving mechanism;
the moving mechanism is arranged in the second through hole;
the driving mechanism is connected with the moving mechanism;
the driving mechanism is suitable for driving the moving mechanism to move in the second through hole.
2. The blind plate valve of claim 1 wherein;
the driving mechanism includes: the first driving motor, the outer sleeve, the fan blades and the air chambers are arranged at two ends of the moving mechanism;
the driving end of the first driving motor is connected with the fan blade;
the outer sleeve is arranged outside the first driving motor, and the outer sleeve covers the fan blades;
the outer sleeve is respectively communicated with the two air chambers;
the outer sleeve is provided with an air inlet.
3. The blind valve of claim 2, wherein;
the shell of the first driving motor is provided with a groove, a baffle plate is slidably arranged in the groove, and the baffle plate is suitable for opening or closing the air inlet.
4. The blind valve of claim 3, wherein;
the outer wall of the air chamber is provided with an annular groove, and the annular groove is communicated with the inside of the air chamber;
the moving mechanism extends into the annular groove.
5. The blind valve of claim 4, wherein;
the drive mechanism further includes: a second drive motor and a gear;
the gear is connected with the moving mechanism;
the second driving mechanism is connected with the gear.
6. The blind plate valve of claim 5 wherein;
the moving mechanism includes: a frame;
the frame is arranged in the second through hole in a penetrating way;
the blind plate mechanism is arranged on the frame;
two ends of the transverse edge of the bottom of the frame extend into the annular grooves of the corresponding air chambers;
a chain is arranged on the transverse edge of the bottom of the frame, and the chain is meshed with the gear.
7. The blind plate valve of claim 6 wherein;
a plurality of rollers are arranged on the inner wall of the second through hole;
the roller is in contact with the frame.
8. The blind valve of claim 7, wherein;
the blind plate mechanism includes: a first blind plate and a second blind plate;
the first blind plate and the second blind plate are arranged on the frame side by side;
a third through hole is formed in the second blind plate, and the third through hole is matched with the first through hole;
the first blind plate is matched with the first through hole.
9. The blind plate valve of claim 8 wherein;
sealing grooves matched with the first through holes are formed in the first blind plate and the second blind plate;
a sealing ring is arranged in the sealing groove;
the seal groove is communicated with the air chamber.
10. A method of using the blind valve of claim 1, comprising:
opening or closing the valve body by movement of the valve plate device;
the valve plate device is pre-started when starting to move, and fine adjustment is performed when the valve plate device moves to a corresponding position;
the driving mechanism drives the moving mechanism to drive the blind plate mechanism to move in the second through hole so as to open or close the first through hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410010616.0A CN117515188B (en) | 2024-01-04 | 2024-01-04 | Blind plate valve and use method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410010616.0A CN117515188B (en) | 2024-01-04 | 2024-01-04 | Blind plate valve and use method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN117515188A true CN117515188A (en) | 2024-02-06 |
| CN117515188B CN117515188B (en) | 2024-03-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410010616.0A Active CN117515188B (en) | 2024-01-04 | 2024-01-04 | Blind plate valve and use method |
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| CN (1) | CN117515188B (en) |
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| JP6368882B1 (en) * | 2018-05-14 | 2018-08-01 | 株式会社ブイテックス | Control method of gate valve |
| CN208417577U (en) * | 2018-05-25 | 2019-01-22 | 石家庄荣信科技有限公司 | A kind of knife gate valve |
| CN210687032U (en) * | 2019-07-25 | 2020-06-05 | 江苏特一机械股份有限公司 | Hydraulic open type gate valve |
| CN110953352A (en) * | 2019-12-31 | 2020-04-03 | 国威阀门制造有限公司 | Electric blind plate valve |
| CN213463422U (en) * | 2020-07-09 | 2021-06-18 | 河南万华畜牧设备有限公司 | Air guide plate structure of upper ventilation window of henhouse |
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| CN216590017U (en) * | 2021-09-13 | 2022-05-24 | 河北长宏阀门有限公司 | High-temperature-resistant blind plate valve |
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| CN217784246U (en) * | 2022-06-29 | 2022-11-11 | 大京阀门科技(福建)有限公司 | Hydraulic blind plate valve |
| CN217952602U (en) * | 2022-07-27 | 2022-12-02 | 宁波奥克斯电气股份有限公司 | Fresh air valve and fresh air device |
| CN116538344A (en) * | 2023-03-28 | 2023-08-04 | 江苏神通阀门股份有限公司 | Quick-cutting blind plate valve |
| CN116928376A (en) * | 2023-08-04 | 2023-10-24 | 唐山学院 | Closed gate valve for gas pipeline |
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