CN211039874U - Electric and manual dual-purpose closed valve - Google Patents
Electric and manual dual-purpose closed valve Download PDFInfo
- Publication number
- CN211039874U CN211039874U CN201921974311.2U CN201921974311U CN211039874U CN 211039874 U CN211039874 U CN 211039874U CN 201921974311 U CN201921974311 U CN 201921974311U CN 211039874 U CN211039874 U CN 211039874U
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- valve body
- transmission rod
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- rod
- valve
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- 230000005540 biological transmission Effects 0.000 claims abstract description 72
- 239000003638 chemical reducing agent Substances 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 2
- 239000002341 toxic gas Substances 0.000 abstract description 6
- 230000009977 dual effect Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 3
- 230000002349 favourable effect Effects 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 238000009423 ventilation Methods 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 230000007123 defense Effects 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000002337 anti-port Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
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Abstract
The utility model relates to an electric and manual dual-purpose airtight valve, which comprises a cylindrical valve body, wherein a transmission rod is rotationally supported in the valve body, the transmission rod is connected with a valve cover, and the valve cover is matched with an inner ring of the valve body; the transmission rod is connected with an electric driving device and a manual driving device which drive the transmission rod to rotate; the two ends of the transmission rod penetrate through the valve body and extend to the outer side of the valve body, and the electric driving device comprises a first gear which is coaxially fixed at one end, located at the outer side of the valve body, of the transmission rod; the manual driving device comprises a rocking handle which can be detachably fixed with the transmission rod. The utility model discloses a set up electric drive device and manual drive arrangement, can realize the control to the valve body switching through electronic, manual dual mode respectively to when the poison gas has polluted the air of airtight valve both sides, also can close the valve body through the electric drive, protected operating personnel's life safety.
Description
Technical Field
The utility model belongs to the technical field of the technique of airtight valve and specifically relates to an electronic, manual dual-purpose airtight valve is related to.
Background
The closed valve is a device used in civil air defense engineering for ventilating and isolating an air path, can prevent toxic gas from polluting the interior of the civil air defense engineering after being closed in wartime so as to ensure the life safety of people, and can play a role in ventilation after being opened; besides the opening and closing function, the closed valve also has the function of properly adjusting the air quantity.
At present, the patent document of grant publication number CN205371660U discloses a sealed valve, including the valve body, be used for the valve plate of closed valve body, install the headstock gear that is used for opening or closing the valve plate on the valve body, valve plate and valve body looks adaptation, the perisporium fixedly connected with elasticity sealing washer of valve plate, set up the recess with elasticity sealing washer looks adaptation on the inner wall of valve body, when the valve plate was closed on the valve body, the elasticity sealing washer stretched into and forms conflict sealedly in the recess.
The above-mentioned hermetic valve has the following defects: when the closed valve is opened and closed, the closed valve can be controlled manually, and if the air on the two sides of the closed valve is polluted by toxic gas in wartime, the life safety of an operator is threatened by manually opening and closing the valve, so that improvement is needed.
SUMMERY OF THE UTILITY MODEL
To the not enough of existence among the above-mentioned prior art, the utility model aims at providing an electronic, manual dual-purpose airtight valve, it is through setting up electric drive arrangement and manual drive arrangement, can realize the control to the valve body switching through electronic, manual dual-type mode respectively to when the poison gas has polluted the air of airtight valve both sides, also can close the valve body through the electric drive, protected operating personnel's life safety.
The above object of the present invention is achieved by the following technical solutions:
an electric and manual dual-purpose closed valve comprises a cylindrical valve body, wherein a transmission rod is rotatably supported in the valve body, the transmission rod is connected with a valve cover, and the valve cover is matched with an inner ring of the valve body; the transmission rod is connected with an electric driving device and a manual driving device which drive the transmission rod to rotate; the two ends of the transmission rod penetrate through the valve body and extend to the outer side of the valve body, and the electric driving device comprises a first gear which is coaxially fixed at one end, located at the outer side of the valve body, of the transmission rod; a shell is integrally arranged on one side of the valve body, which is positioned on the first gear, the shell is of a square shell-shaped structure integrally arranged with the valve body, and the first gear is arranged in the shell; a power device capable of driving the first gear to rotate forwards or backwards is arranged in the shell; the manual driving device comprises a rocking handle which can be detachably fixed with the transmission rod.
By adopting the technical scheme, when the valve cover needs to be opened and closed electrically, the power device is used for driving the first gear to rotate forwards or backwards, namely the transmission rod can be driven to rotate forwards or backwards, so that the valve cover can be opened and closed; when the valve cover needs to be manually driven to open and close, the shaking handle is fixedly connected to the end of the transmission rod, and the shaking handle can be rotated forwards or backwards to drive the transmission rod to rotate forwards or backwards, so that the valve cover can be opened and closed; therefore, when the toxic gas pollutes the air on the two sides of the valve body, the valve body can be closed through electric drive, and the life safety of operators is protected.
The utility model discloses a further set up to: the power device comprises a rectangular toothed frame which is in sliding fit in the machine shell, a first rack and a second rack are integrally arranged on one long edge of an inner ring of the toothed frame, a gap is arranged between the first rack and the second rack, and the first rack and the second rack are symmetrically arranged relative to the middle of the toothed frame; the first gear is arranged on the inner ring of the gear frame; a third rack is integrally arranged on one long edge of the outer ring of the gear frame, which is opposite to the first rack, a strip-shaped groove corresponding to the third rack is formed in the machine shell, and the third rack is in sliding fit with the strip-shaped groove; the valve body is fixedly provided with an electric motor, the electric motor is connected with a speed reducer, an output shaft of the speed reducer is coaxially fixed with a second gear, and the second gear is meshed with a third rack.
Through adopting above-mentioned technical scheme, when using the switching of electric drive valve gap, use the motor to drive the reduction gear and rotate, the reduction gear drives the second gear and rotates, thereby second gear and third rack intermeshing can drive the frame of teeth and move in the casing, thereby make first rack or second rack drive first gear revolve, then first rack and second rack respectively with first gear intermeshing can drive transfer line corotation or reversal, the realization is opened the action of closing the valve gap.
The utility model discloses a further set up to: the end part of the transmission rod, which is positioned at one side of the shell, is provided with a cross-shaped groove, the cross-shaped groove is arranged along the axis direction of the transmission rod, and the cross-shaped groove is in a cross shape; the shaking handle is of a three-section bent rod-shaped structure, a first cross rod is integrally arranged at one end of the shaking handle, the cross section of the first cross rod is in a cross shape, and the first cross rod is matched with the cross groove.
Through adopting above-mentioned technical scheme, when using manual drive valve gap switching, wear to establish first cross pole in the cross recess and can make the transfer line and wave the handle relatively fixed, forward or the antiport waves the handle and can drive the transfer line and rotate to make the valve gap open or close.
The utility model discloses a further set up to: the middle part of the transmission rod, which is positioned in the valve body, is provided with a hinge seat, and the hinge seat comprises two fixed plates which are arranged in parallel and fixed on the transmission rod; and a connecting seat with a plate-shaped structure is fixedly arranged on the side surface of the valve cover facing the transmission rod, and the connecting seat is hinged between the two fixing plates.
Through adopting above-mentioned technical scheme, will drive articulated seat when the transfer line rotates and rotate around the transfer line to make articulated seat pulling or promote the valve gap, realized the transfer line and rotated the transmission of opening or closing the valve gap.
The utility model discloses a further set up to: a pressing plate is fixedly arranged between the two fixing plates, the pressing plate and the transmission rod are oppositely arranged relative to the connecting seat, and the surface of the pressing plate is parallel to the valve cover; a spring is arranged between the pressing plate and the valve cover, one end of the spring is fixed on the pressing plate, and the other end of the spring is fixed on the valve cover.
Through adopting above-mentioned technical scheme, the back is opened to the valve gap, and the spring can play the cushioning effect to the rotation of valve gap around the articulated shaft, is favorable to avoiding the valve gap to take place rocking of reciprocity to can guarantee the stability that the valve body ventilates.
The utility model discloses a further set up to: the end part of the transmission rod opposite to the shell is provided with a locking device, the locking device comprises a second cross rod integrally arranged with the transmission rod, and the section of the second cross rod is in a cross shape; a round rod is integrally arranged on the outer side of the second cross rod, and a locking plate penetrates through the round rod; the locking plate is of a long strip-shaped plate structure, one end of the locking plate is provided with a cross hole, the locking plate penetrates through the round rod through the cross hole, and the cross hole is matched with the second cross rod; the other end of the locking plate is provided with a round hole, the outer wall of the valve body is provided with a fixed rod with a round section, and the round hole is matched with the fixed rod.
Through adopting above-mentioned technical scheme, when the valve gap was closed, wear to establish the locking plate on the second cross rod through the cross hole, the round hole can penetrate the dead lever in just this moment to can lock the transfer line, make the valve gap keep the state of closing.
The utility model discloses a further set up to: and flanges are arranged at the edges of the two ends of the valve body.
Through adopting above-mentioned technical scheme, the flange of valve body both ends edge can conveniently install the valve body on the wind channel, improves the practicality.
The utility model discloses a further set up to: the inner ring of the valve body is provided with an annular flange, the surface of the flange is fixedly provided with an annular rubber pad, and the valve cover is matched with the flange.
Through adopting above-mentioned technical scheme, the valve body can be sealed when the valve gap lid is established on the flange, and the rubber pad can increase the gas tightness when the valve gap lid is established on the flange to reduce the probability of gas leakage.
To sum up, the utility model discloses a beneficial technological effect does:
1. when the valve cover needs to be opened and closed electrically, the power device is used for driving the first gear to rotate forwards or backwards, namely the transmission rod can be driven to rotate forwards or backwards, so that the valve cover is opened and closed; when the valve cover needs to be manually driven to open and close, the shaking handle is fixedly connected to the end of the transmission rod, and the shaking handle can be rotated forwards or backwards to drive the transmission rod to rotate forwards or backwards, so that the valve cover can be opened and closed; therefore, when the toxic gas pollutes the air on the two sides of the valve body, the valve body can be closed through electric drive, and the life safety of operators is protected;
2. the motor is started to drive the gear frame to move, so that the transmission rod can be driven forwards or reversely; the first cross rod is matched with the cross groove to realize the detachable fixation of the rocking handle and the transmission rod; the transmission rod rotates to drive the hinge seat to pull or push the valve cover to realize the transmission of opening and closing the valve cover; the spring is favorable for avoiding the reciprocating shaking of the valve cover and ensuring the ventilation stability;
3. after the valve cover is closed, the cross hole penetrates through the second cross rod, and meanwhile, the round hole penetrates through the fixing rod to lock the transmission rod; the flange can conveniently install the valve body on the air duct; the rubber pad can increase the air tightness of the valve cover when the valve cover is arranged on the flange.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention;
fig. 2 is a schematic view of the overall structure of the present invention;
FIG. 3 is a schematic view of the electric drive;
FIG. 4 is an exploded view of the cross slot and the swing handle;
fig. 5 is a schematic diagram of the overall structure of the present invention;
fig. 6 is a partially enlarged schematic view of a portion a in fig. 5.
In the figure, 1, a valve body; 11. a flange; 12. a flange; 121. a rubber pad; 13. a housing; 131. a strip-shaped groove; 2. a transmission rod; 21. a hinged seat; 211. a fixing plate; 212. pressing a plate; 213. a spring; 22. a cross groove; 3. a valve cover; 31. a connecting seat; 4. an electric drive; 41. a first gear; 42. a toothed frame; 421. a first rack; 422. a second rack; 423. a third rack; 43. an electric motor; 44. a speed reducer; 45. a second gear; 5. a manual drive device; 51. shaking the handle; 511. a first cross bar; 6. a locking device; 61. a second cross bar; 62. a round bar; 621. a baffle plate; 63. a locking plate; 631. a cross hole; 632. a circular hole; 64. and (5) fixing the rod.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1 and 2, the electric and manual dual-purpose airtight valve disclosed by the present invention comprises a cylindrical valve body 1; flanges 11 are arranged at the edges of two ends of the valve body 1, and the flanges 11 can be used for conveniently installing the valve body 1 on an air duct; a transmission rod 2 is rotatably supported in the valve body 1, and the transmission rod 2 is perpendicular to the axis of the valve body 1; an annular flange 12 is arranged on the inner ring of the valve body 1, a circular valve cover 3 is covered on the flange 12, and the valve body 1 can be sealed when the valve cover 3 is covered on the flange 12; the surface of the flange 12 is fixedly provided with an annular rubber pad 121, and the rubber pad 121 can increase the air tightness when the valve cover 3 is covered on the flange 12, thereby reducing the probability of gas leakage.
Referring to fig. 5 and 6, the middle part of the transmission rod 2 in the valve body 1 is provided with a hinge seat 21, and the hinge seat 21 comprises two fixing plates 211 which are arranged in parallel and fixed on the transmission rod 2; a connecting seat 31 with a plate-shaped structure is fixedly arranged on the side surface of the valve cover 3 facing the transmission rod 2, and the connecting seat 31 is hinged between the two fixing plates 211; a pressing plate 212 is fixedly arranged between the two fixing plates 211, the pressing plate 212 and the transmission rod 2 are oppositely arranged relative to the connecting seat 31, and the surface of the pressing plate 212 is parallel to the valve cover 3; a spring 213 is arranged between the pressure plate 212 and the valve cover 3, one end of the spring 213 is fixed on the pressure plate 212, and the other end is fixed on the valve cover 3; after the valve cover 3 is opened, the spring 213 is favorable for avoiding the valve cover 3 from reciprocating shaking, so that the ventilation stability of the valve body 1 can be ensured; referring to fig. 1, the transmission rod 2 is connected to an electric driving device 4 and a manual driving device 5, which can respectively drive the transmission rod 2 to rotate, and a worker can respectively and independently drive the transmission rod 2 through the electric driving device 4 and the manual driving device 5, so as to drive the valve cover 3 to open and close.
Referring to fig. 1 and 3, both ends of the transmission rod 2 extend to the outside of the valve body 1 through the valve body 1, and the electric driving device 4 includes a first gear 41 coaxially fixed to one end of the transmission rod 2 located at the outside of the valve body 1; a casing 13 is integrally arranged on one side of the valve body 1, which is positioned on the first gear 41, the casing 13 is a square shell-shaped structure integrally arranged with the valve body 1, and the first gear 41 is arranged in the casing 13; the electric drive 4 further comprises a rectangular toothed frame 42 arranged in the housing 13, the toothed frame 42 being slidably fitted in the housing 13; a first rack 421 and a second rack 422 are integrally arranged on one long side of the inner ring of the toothed frame 42, a gap is arranged between the first rack 421 and the second rack 422, and the first rack 421 and the second rack 422 are symmetrically arranged with respect to the middle of the toothed frame 42.
Referring to fig. 3, the first gear 41 is disposed at an inner ring of the rack 42, the first rack 421 and the second rack 422 can be respectively engaged with the first gear 41, and the first rack 421 and the second rack 422 can be simultaneously disengaged from the first gear 41; a third rack 423 is integrally arranged on one long side of the outer ring of the gear frame 42 opposite to the first rack 421, a strip-shaped groove 131 corresponding to the third rack 423 is formed in the machine shell 13, and the third rack 423 is in sliding fit with the strip-shaped groove 131; a motor 43 is fixedly arranged on the valve body 1, the motor 43 is connected with a speed reducer 44, a second gear 45 is coaxially fixed on an output shaft of the speed reducer 44, and the second gear 45 is meshed with a third rack 423; the driving motor 43 drives the second gear 45 to rotate so as to drive the gear frame 42 to slide in the housing 13, and the first rack 421 and the second rack 422 are respectively meshed with the first gear 41 so as to realize the forward rotation and the reverse rotation of the transmission rod 2, thereby realizing the opening or closing of the valve cover 3.
Referring to fig. 1 and 4, the end of the transmission rod 2 located in the casing 13 is rotatably supported on the side wall of the casing 13 and penetrates through the casing 13, a cross-shaped groove 22 is formed in the end of the transmission rod 2 located on one side of the casing 13, and the cross-shaped groove 22 is formed along the axial direction of the transmission rod 2 and has a cross-shaped section; the manual driving device 5 comprises a rocking handle 51, and the rocking handle 51 is of a three-section bent rod-shaped structure; a first cross bar 511 is integrally arranged at one end part of the rocking handle 51, the cross section of the first cross bar 511 is cross-shaped, and the first cross bar 511 is matched with the cross groove 22; when the valve cover 3 needs to be manually driven to open, the first cross rod 511 is arranged in the cross groove 22 in a penetrating mode, and the transmission rod 2 can be driven to rotate by rotating the swinging handle 51, so that the valve cover 3 is opened or closed.
Referring to fig. 2, the end of the transmission rod 2 opposite to the housing 13 is provided with a locking device 6, the locking device 6 comprises a second cross rod 61 integrally arranged with the transmission rod 2, and the cross section of the second cross rod 61 is cross-shaped; a round rod 62 is integrally arranged on the outer side of the second cross rod 61, and a locking plate 63 penetrates through the round rod 62; the locking plate 63 is of a long strip plate-shaped structure, one end of the locking plate 63 is provided with a cross hole 631, the locking plate 63 penetrates through the round rod 62 through the cross hole 631, and the cross hole 631 is matched with the second cross rod 61; the other end of the locking plate 63 is provided with a round hole 632, the outer wall of the valve body 1 is provided with a fixing rod 64 with a round section, the fixing rod 64 is arranged in parallel with the transmission rod 2, and the round hole 632 is matched with the fixing rod 64; when the valve cover 3 is closed, the locking plate 63 is arranged on the second cross rod 61 through the cross hole 631, and at the moment, the round hole 632 can just penetrate into the fixing rod 64, so that the transmission rod 2 can be locked, and the valve cover 3 is kept in a closed state; a stop 621 is fixedly arranged at the end of the round rod 62, and the stop 621 can prevent the locking plate 63 from falling off from the round rod 62.
The working principle of the utility model is that when the valve cover 3 needs to be electrically opened and closed, the motor 43 is started, the motor 43 drives the second gear 45 to rotate, so as to drive the gear frame 42 to slide in the shell 13, and the first rack 421 and the second rack 422 are meshed with the first gear 41 respectively to drive the transmission rod 2 to rotate positively or negatively, so as to realize the action of opening or closing the valve cover 3; when the valve cover 3 needs to be manually driven to be opened, the first cross rod 511 is arranged in the cross groove 22 in a penetrating mode, and the transmission rod 2 can be driven to rotate by rotating the shaking handle 51, so that the valve cover 3 is opened or closed; therefore, the utility model discloses have the effect that can control through manual and electronic break-make to valve body 1 simultaneously.
The embodiment of the present invention is a preferred embodiment of the present invention, which is not limited in this way to the protection scope of the present invention, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.
Claims (8)
1. An electric and manual dual-purpose closed valve comprises a cylindrical valve body (1), wherein a transmission rod (2) is rotatably supported in the valve body (1), the transmission rod (2) is connected with a valve cover (3), and the valve cover (3) is matched with an inner ring of the valve body (1); the method is characterized in that: the transmission rod (2) is connected with an electric driving device (4) and a manual driving device (5) which drive the transmission rod (2) to rotate; the two ends of the transmission rod (2) penetrate through the valve body (1) and extend to the outer side of the valve body (1), and the electric driving device (4) comprises a first gear (41) which is coaxially fixed at one end, located at the outer side of the valve body (1), of the transmission rod (2); a shell (13) is integrally arranged on one side, located on the first gear (41), of the valve body (1), the shell (13) is of a square shell-shaped structure integrally arranged with the valve body (1), and the first gear (41) is arranged in the shell (13); a power device capable of driving the first gear (41) to rotate forwards or backwards is arranged in the machine shell (13); the manual drive device (5) comprises a rocking handle (51) which can be detachably fixed with the transmission rod (2).
2. The electric and manual dual-purpose airtight valve according to claim 1, characterized in that: the power device comprises a rectangular toothed frame (42) which is in sliding fit in the machine shell (13), a first rack (421) and a second rack (422) are integrally arranged on one long edge of the inner ring of the toothed frame (42), a gap is formed between the first rack (421) and the second rack (422), and the first rack (421) and the second rack (422) are symmetrically arranged relative to the middle of the toothed frame (42); the first gear (41) is arranged at the inner ring of the gear frame (42); a third rack (423) is integrally arranged on one long side of the outer ring of the gear frame (42) opposite to the first rack (421), a strip-shaped groove (131) corresponding to the third rack (423) is formed in the machine shell (13), and the third rack (423) is in sliding fit with the strip-shaped groove (131); the valve body (1) is fixedly provided with an electric motor (43), the electric motor (43) is connected with a speed reducer (44), an output shaft of the speed reducer (44) is coaxially fixed with a second gear (45), and the second gear (45) is meshed with a third rack (423).
3. The electric and manual dual-purpose airtight valve according to claim 1, characterized in that: the end part of the transmission rod (2) positioned at one side of the shell (13) is provided with a cross groove (22), the cross groove (22) is arranged along the axial direction of the transmission rod (2) and the cross section is in a cross shape; the rocking handle (51) is of a three-section bent rod-shaped structure, a first cross rod (511) is integrally arranged at one end of the rocking handle (51), the cross section of the first cross rod (511) is cross-shaped, and the first cross rod (511) is matched with the cross groove (22).
4. The electric and manual dual-purpose airtight valve according to claim 1, characterized in that: the middle part of the transmission rod (2) in the valve body (1) is provided with a hinge seat (21), and the hinge seat (21) comprises two fixing plates (211) which are arranged in parallel and fixed on the transmission rod (2); the side surface of the valve cover (3) facing the transmission rod (2) is fixedly provided with a connecting seat (31) with a plate-shaped structure, and the connecting seat (31) is hinged between the two fixing plates (211).
5. The electric and manual dual-purpose airtight valve of claim 4, characterized in that: a pressing plate (212) is fixedly arranged between the two fixing plates (211), the pressing plate (212) and the transmission rod (2) are oppositely arranged relative to the connecting seat (31), and the surface of the pressing plate (212) is parallel to the valve cover (3); a spring (213) is arranged between the pressing plate (212) and the valve cover (3), one end of the spring (213) is fixed on the pressing plate (212), and the other end of the spring is fixed on the valve cover (3).
6. The electric and manual dual-purpose airtight valve according to claim 1, characterized in that: a locking device (6) is arranged at the end part of the transmission rod (2) opposite to the shell (13), the locking device (6) comprises a second cross rod (61) which is integrally arranged with the transmission rod (2), and the section of the second cross rod (61) is in a cross shape; a round rod (62) is integrally arranged on the outer side of the second cross rod (61), and a locking plate (63) penetrates through the round rod (62); the locking plate (63) is of a long strip plate-shaped structure, one end of the locking plate (63) is provided with a cross hole (631), the locking plate (63) penetrates through the round rod (62) through the cross hole (631), and the cross hole (631) is matched with the second cross rod (61); the other end of the locking plate (63) is provided with a round hole (632), the outer wall of the valve body (1) is provided with a fixing rod (64) with a round section, and the round hole (632) is matched with the fixing rod (64).
7. The electric and manual dual-purpose airtight valve according to claim 1, characterized in that: flanges (11) are arranged at the edges of the two ends of the valve body (1).
8. The electric and manual dual-purpose airtight valve according to claim 1, characterized in that: the inner ring of the valve body (1) is provided with an annular flange (12), the surface of the flange (12) is fixedly provided with an annular rubber pad (121), and the valve cover (3) is matched with the flange (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921974311.2U CN211039874U (en) | 2019-11-14 | 2019-11-14 | Electric and manual dual-purpose closed valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921974311.2U CN211039874U (en) | 2019-11-14 | 2019-11-14 | Electric and manual dual-purpose closed valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211039874U true CN211039874U (en) | 2020-07-17 |
Family
ID=71565517
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921974311.2U Expired - Fee Related CN211039874U (en) | 2019-11-14 | 2019-11-14 | Electric and manual dual-purpose closed valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211039874U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113341073A (en) * | 2021-06-04 | 2021-09-03 | 徐州虹源环保科技有限公司 | Air pollutant standard exceeding monitoring and warning equipment for electroplating workshop |
| CN114414138A (en) * | 2022-01-27 | 2022-04-29 | 江苏君成工业智能科技有限公司 | Automatic air flow meter |
-
2019
- 2019-11-14 CN CN201921974311.2U patent/CN211039874U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113341073A (en) * | 2021-06-04 | 2021-09-03 | 徐州虹源环保科技有限公司 | Air pollutant standard exceeding monitoring and warning equipment for electroplating workshop |
| CN114414138A (en) * | 2022-01-27 | 2022-04-29 | 江苏君成工业智能科技有限公司 | Automatic air flow meter |
| CN114414138B (en) * | 2022-01-27 | 2024-03-19 | 江苏君成工业智能科技有限公司 | Automatic change air volume appearance |
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Address after: Wenyan Industrial Zone, Zhulou Township, Pingyuan demonstration area, Xinxiang City, Henan Province (southwest corner of the intersection of Jingsi road and Weiyi Road) Patentee after: Henan Jinxin civil defense (Group) Co.,Ltd. Address before: Wenyan Industrial Zone, Zhulou Township, Pingyuan demonstration area, Xinxiang City, Henan Province (southwest corner of the intersection of Jingsi road and Weiyi Road) Patentee before: Henan Jinxin protective equipment Co.,Ltd. |
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Granted publication date: 20200717 |