CN112303305A - Self-operated gas pressure reduction adjusting device - Google Patents
Self-operated gas pressure reduction adjusting device Download PDFInfo
- Publication number
- CN112303305A CN112303305A CN202011120687.4A CN202011120687A CN112303305A CN 112303305 A CN112303305 A CN 112303305A CN 202011120687 A CN202011120687 A CN 202011120687A CN 112303305 A CN112303305 A CN 112303305A
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- China
- Prior art keywords
- sliding
- lifter plate
- gas pressure
- self
- valve body
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Classifications
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- 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
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/20—Excess-flow valves
- F16K17/22—Excess-flow valves actuated by the difference of pressure between two places in the flow line
- F16K17/24—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member
- F16K17/28—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member operating in one direction only
- F16K17/30—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member operating in one direction only spring-loaded
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- 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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
- F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
- F16K1/20—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation arranged externally of valve member
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- 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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
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- 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
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/20—Excess-flow valves
- F16K17/34—Excess-flow valves in which the flow-energy of the flowing medium actuates the closing mechanism
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Fluid Pressure (AREA)
Abstract
The invention discloses a self-operated gas pressure reduction adjusting device which comprises a gas regulating valve body, wherein a gas pressure adjusting baffle is hinged in a gas passage of the gas regulating valve body, a sliding hole is formed in the top end of the gas regulating valve body, a sliding rod is slidably arranged in the sliding hole, the bottom end of the sliding rod extends into the gas regulating valve body and fixes a horizontally arranged sliding rod, fixing strips are fixedly connected to the top end of the gas pressure adjusting baffle, the top end of the gas pressure adjusting baffle is positioned on two sides of the sliding rod, rectangular openings are formed in the fixing strips, and two ends of the sliding rod penetrate through the two fixing strips through the two rectangular openings respectively. The pressure-reducing valve adjusting device is ingenious in structure, convenient to use, capable of conveniently disassembling and assembling the first spring and adjusting the pressure-reducing valve value within a large range, suitable for more use scenes, capable of quickly fine-adjusting the pressure-reducing valve value by rotating the knob and simple and convenient to use.
Description
Technical Field
The invention belongs to the technical field of gas pressure reducing valves, and particularly relates to a self-operated gas pressure reducing adjusting device.
Background
The pressure reducing valve is a valve which reduces the temperature of a medium by adjusting the flow rate of the medium by controlling the opening degree of an opening and closing member in a valve body, and simultaneously adjusting the opening degree of the opening and closing member by the action of the pressure behind the valve to keep the pressure behind the valve within a certain range, and injecting cooling water into the valve body or behind the valve to reduce the temperature of the medium. The valve is characterized in that under the condition that the inlet pressure is changed continuously, the outlet pressure and the temperature value are kept within a certain range. The pressure reducing valve is an essential accessory of the pneumatic regulating valve and mainly used for reducing the pressure of an air source and stabilizing the pressure to a fixed value, so that the regulating valve can obtain stable air source power for regulating and controlling. The valve of this type should be generally installed horizontally in the pipeline.
The adjusting range of the existing pressure reducing valve is small, the existing pressure reducing valve cannot be suitable for most use scenes, and the existing pressure reducing valve is not convenient enough to adjust.
Disclosure of Invention
The present invention is directed to a self-operated gas pressure reducing regulator, which solves the above problems.
In order to achieve the purpose, the invention provides the following technical scheme: the gas regulating valve comprises a gas regulating valve body, wherein a gas passage of the gas regulating valve body is internally hinged with a gas pressure regulating baffle, the top end of the gas regulating valve body is provided with a sliding hole, a sliding rod is arranged in the sliding hole in a sliding manner, the bottom end of the sliding rod extends into the gas regulating valve body and is fixed with a sliding rod horizontally arranged, the top end of the gas pressure regulating baffle is positioned at two sides of the sliding rod and is fixedly connected with a fixing strip, the fixing strip is provided with a rectangular opening, two ends of the sliding rod respectively penetrate through the two fixing strips through the two rectangular openings, the top end of the gas regulating valve body is fixedly provided with an airtight cover through bolts, the inside of the airtight cover is respectively provided with a first lifting plate and a second lifting plate in a sliding manner, a first spring is detachably arranged between the first lifting plate and the second lifting plate, the bottom end of the first lifting plate is fixedly connected with the top end of the sliding rod, a, two first sliding blocks are installed to the outside screw thread of two-way threaded rod, and the bottom of first sliding block articulates there is the bracing piece, and the bottom of bracing piece is articulated with the top of second lifter plate.
Preferably, the first spring is equipped with the multiunit, and multiunit first spring level equidistance distributes between first lifter plate and second lifter plate.
Preferably, all be equipped with latch mechanism corresponding to the position on first lifter plate and the second lifter plate, latch mechanism includes fixed joint piece and removal joint piece, has all seted up the installation cavity on first lifter plate and the second lifter plate, has the second sliding block through slide rail slidable mounting in the installation cavity, and the top of second sliding block extends to the outside of installation cavity and with removal joint piece fixed connection through the preformed opening, and the second spring that the level set up is kept away from to the second sliding block between one side of fixed joint piece and the inner wall of installation cavity.
Preferably, the equal fixedly connected with T font joint spare in both ends of first spring, the equal fixedly connected with joint groove in one side that fixed joint piece and removal joint piece are close to each other, the joint inslot on fixed joint piece and the removal joint piece is extended to the both sides of T font joint spare.
Preferably, the sliding groove has been seted up on the top inner wall of airtight cover, and the equal slidable mounting of two first sliding blocks is in the sliding groove.
Preferably, one end of the bidirectional threaded rod extends to the outside of the airtight cover and is fixedly connected with a knob.
Preferably, the inner walls of the two sides of the airtight cover are provided with rolling grooves, the two sides of the first lifting plate close to the rolling grooves are rotatably provided with guide wheels, and the guide wheels extend into the rolling grooves.
Preferably, the top end inner wall of the airtight cover is fixedly connected with two vertically arranged guide rods, the second lifting plate is provided with guide holes corresponding to the guide rods, and the second lifting plate penetrates through the second lifting plate through the guide holes.
Compared with the prior art, the invention has the beneficial effects that:
1. the elasticity formed by the first springs can be increased or decreased by changing the number of the groups of the first springs, so that the decompression threshold of the device is changed, when the number of the groups of the first springs is changed to be more, the air pressure adjusting baffle can be pushed to rotate anticlockwise by needing larger air pressure, the decompression threshold is higher, otherwise, the decompression threshold is reduced, the decompression threshold can be adjusted in a larger range, and the device can be suitable for more use scenes;
2. the two first sliding blocks can be driven to move close to each other or away from each other through rotation of the bidirectional threaded rod, when the two first sliding blocks move close to each other, the second lifting plate can be pushed downwards, so that the first spring is compressed, the decompression threshold value is increased, the decompression threshold value can be reduced through reverse rotation of the knob, and the device can be adjusted conveniently and quickly through manual operation;
3. through the design of the clamping mechanism, the elastic force of the second spring can push the second sliding block to slide leftwards, so that the movable clamping block is pushed to move towards the fixed clamping block, the two ends of the first spring can be fixed through the matching of the movable clamping block and the fixed clamping block, and the first spring can be conveniently disassembled and assembled;
the pressure-reducing valve adjusting device is ingenious in structure, convenient to use, capable of conveniently disassembling and assembling the first spring and adjusting the pressure-reducing valve value within a large range, suitable for more use scenes, capable of quickly fine-adjusting the pressure-reducing valve value by rotating the knob and simple and convenient to use.
Drawings
FIG. 1 is a front perspective cross-sectional view of the present invention;
FIG. 2 is a front perspective cross-sectional view of the hermetic enclosure of the present invention;
FIG. 3 is an enlarged view of the position A of the present invention;
fig. 4 is a left perspective sectional view of the air pressure adjusting baffle of the present invention.
In the figure: 1. a gas regulating valve body; 2. an air pressure adjusting baffle; 3. an airtight cover; 4. a slide hole; 5. a slide bar; 6. a fixing strip; 7. a rectangular opening; 8. a slide bar; 9. a first lifter plate; 10. a clamping mechanism; 11. a first spring; 12. a second lifter plate; 13. a guide bar; 14. a bidirectional threaded rod; 15. a sliding groove; 16. a first slider; 17. a support bar; 18. a knob; 19. a guide wheel; 20. a rolling groove; 21. t-shaped clamping pieces; 22. fixing the clamping block; 23. moving the clamping block; 24. a mounting cavity; 25. a slide rail; 26. a second slider; 27. reserving an opening; 28. a second spring.
Detailed Description
The present invention will be further described with reference to the following examples.
The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention. The conditions in the embodiments can be further adjusted according to specific conditions, and simple modifications of the method of the present invention based on the concept of the present invention are within the scope of the claimed invention.
Referring to fig. 1-4, the present invention provides a technical solution of a self-operated gas pressure reduction adjustment device: comprises a gas regulating valve body 1, an air pressure regulating baffle 2 is hinged in a gas passage of the gas regulating valve body 1, a sliding hole 4 is formed in the top end of the gas regulating valve body 1, a sliding rod 5 is arranged in the sliding hole 4 in a sliding manner, the bottom end of the sliding rod 5 extends into the gas regulating valve body 1 and fixes a sliding rod 8 horizontally arranged, fixing strips 6 are fixedly connected to the top end of the air pressure regulating baffle 2 at two sides of the sliding rod 5, rectangular openings 7 are formed in the fixing strips 6, two ends of the sliding rod 8 respectively penetrate through the two fixing strips 6 through the two rectangular openings 7, an air tight cover 3 is fixedly arranged at the top end of the gas regulating valve body 1 through bolts, a first lifting plate 9 and a second lifting plate 12 are respectively arranged in the air tight cover 3 in a sliding manner, and a first spring 11 is detachably arranged between the first lifting plate 9 and the second lifting plate 12, the bottom of first lifter plate 9 and the top fixed connection of slide bar 5, be located in airtight cover 3 and rotate directly over second lifter plate 12 and install the two-way threaded rod 14 that the level set up, two first sliding blocks 16 are installed to the outside screw thread of two-way threaded rod 14, and the bottom of first sliding block 16 articulates there is the bracing piece 17, and the bottom of bracing piece 17 is articulated with the top of second lifter plate 12.
Wherein, first spring 11 is equipped with the multiunit, and multiunit first spring 11 is in the equidistance distribution of level between first lifter plate 9 and second lifter plate 12, can increase or reduce the elasticity that first spring 11 formed through the group number that changes first spring 11 for the decompression threshold value of device changes, and when the group number that changes first spring 11 becomes many, needs bigger atmospheric pressure just can promote atmospheric pressure adjusting baffle 2 anticlockwise rotation, and the decompression threshold value becomes high, and vice versa the decompression threshold value reduces.
Wherein, the corresponding positions on the first lifting plate 9 and the second lifting plate 12 are both provided with a clamping mechanism 10, the clamping mechanism 10 comprises a fixed clamping block 22 and a movable clamping block 23, the first lifting plate 9 and the second lifting plate 12 are both provided with a mounting cavity 24, a second sliding block 26 is slidably mounted in the mounting cavity 24 through a sliding rail 25, the top end of the second sliding block 26 extends to the outside of the mounting cavity 24 through a reserved opening 27 and is fixedly connected with the movable clamping block 23, a horizontally arranged second spring 28 is fixedly connected between one side of the second sliding block 26 far away from the fixed clamping block 22 and the inner wall of the mounting cavity 24, the second spring 26 can be pushed to slide leftwards due to the elastic force of the second spring 28, so as to push the movable clamping block 23 to move towards the fixed clamping block 22, so as to fix the two ends of the first spring 11 through the cooperation of the movable clamping block 23 and the fixed clamping block 22, so that the first spring 11 can be conveniently disassembled and assembled.
Wherein, the equal fixedly connected with T font joint spare 21 in both ends of first spring 11, the equal fixedly connected with joint groove in one side that fixed joint piece 22 and removal joint piece 23 are close to each other, and in the joint inslot on fixed joint piece 22 and the removal joint piece 23 was extended to the both sides of T font joint spare 21, joint groove and T font joint spare 21 made the installation of first spring 11 more stable.
Wherein, seted up sliding tray 15 on the top inner wall of airtight cover 3, two equal slidable mounting of first sliding block 16 are in sliding tray 15, and sliding tray 15 plays the gliding guide effect of first sliding block 16 level.
Wherein, the one end of two-way threaded rod 14 extends to the outside and the fixedly connected with knob 18 of airtight cover 3, can laborsaving convenient two-way threaded rod 14 of rotation through knob 18, the rotation through two-way threaded rod 14 can drive two first sliding blocks 16 and be close to each other or keep away from the removal each other, can promote second lifter plate 12 downwards when two first sliding blocks 16 are close to the removal each other, thereby compress first spring 11, and then make the decompression threshold value uprise, the reverse rotation knob 18 can reduce the decompression threshold value.
Wherein, all seted up on the both sides inner wall of airtight cover 3 and rolled groove 20, first lifter plate 9 is close to the both sides of rolling groove 20 and all rotates and installs guide pulley 19, and guide pulley 19 extends to in rolling groove 20, and guide pulley 19 rolls in rolling groove 20 and plays the guide effect to first lifter plate 9 lift.
Wherein, fixedly connected with two vertical guide bars 13 that set up on the top inner wall of airtight cover 3, set up the guiding hole that corresponds with guide bar 13 on the second lifter plate 12, second lifter plate 12 runs through second lifter plate 12 through the guiding hole, and guide bar 13 slides from top to bottom in the guiding hole and plays the guide effect to second lifter plate 12 elevating movement.
The working principle and the using process of the invention are as follows: when gas flows through gas control valve body 1, it becomes high when atmospheric pressure, when the velocity of flow grow, gas can promote atmospheric pressure adjusting baffle 2 clockwise rotation, and promote slide bar 5 rebound compression first spring 11, make the passageway widen, thereby reach the effect through first spring 11 elasticity automatically regulated decompression, make atmospheric pressure stabilize in the certain limit, rotate two-way threaded rod 14 through knob 18 and can promote second lifter plate 12 downwards, thereby compress first spring 11, make the elasticity grow of first spring 11, thereby increase the decompression threshold value, it is more convenient to make the device adjust, first spring 11 through installing different group numbers also can adjust the decompression threshold value in the great scope, make the device can be applicable to more use scenes.
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. A self-operated gas pressure reduction adjusting device is characterized in that: comprises a gas regulating valve body (1), an air pressure regulating baffle (2) is hinged in a gas passage of the gas regulating valve body (1), a sliding hole (4) is formed in the top end of the gas regulating valve body (1), a sliding rod (5) is arranged in the sliding hole (4), the bottom end of the sliding rod (5) extends into the inside of the gas regulating valve body (1) and is fixedly provided with a sliding rod (8), the top end of the air pressure regulating baffle (2) is positioned on two sides of the sliding rod (5) and is fixedly connected with fixing strips (6), rectangular openings (7) are formed in the fixing strips (6), two ends of the sliding rod (8) penetrate through the two fixing strips (6) through the two rectangular openings (7) respectively, an airtight cover (3) is fixedly arranged on the top end of the gas regulating valve body (1) through bolts, a first lifting plate (9) and a second lifting plate (12) are arranged inside the airtight cover (3) in a sliding mode respectively, demountable installation has first spring (11) between first lifter plate (9) and second lifter plate (12), the bottom of first lifter plate (9) and the top fixed connection of slide bar (5), be located in airtight cover (3) and rotate two-way threaded rod (14) of installing the level setting directly over second lifter plate (12), two first sliding blocks (16) are installed to the outside screw thread of two-way threaded rod (14), the bottom of first sliding block (16) articulates there is bracing piece (17), the bottom of bracing piece (17) is articulated with the top of second lifter plate (12).
2. A self-operated gas pressure reducing regulator as set forth in claim 1, wherein: the first springs (11) are provided with multiple groups, and the multiple groups of the first springs (11) are distributed between the first lifting plate (9) and the second lifting plate (12) at equal intervals.
3. A self-operated gas pressure reducing regulator as set forth in claim 2, wherein: corresponding position all is equipped with clamping mechanism (10) on first lifter plate (9) and second lifter plate (12), clamping mechanism (10) are including fixed joint piece (22) and removal joint piece (23), all seted up installation cavity (24) on first lifter plate (9) and second lifter plate (12), have second sliding block (26) through slide rail (25) slidable mounting in installation cavity (24), the top of second sliding block (26) extend to the outside of installation cavity (24) and with removal joint piece (23) fixed connection through reservation opening (27), second spring (28) that fixed joint piece (22) were kept away from in second sliding block (26) between the inner wall of one side and installation cavity (24) the level set up are fixed connection.
4. A self-operated gas pressure reducing regulator as set forth in claim 3, wherein: the equal fixedly connected with T font joint spare (21) in both ends of first spring (11), the equal fixedly connected with joint groove in one side that fixed joint piece (22) and removal joint piece (23) are close to each other, the joint inslot on fixed joint piece (22) and removal joint piece (23) is extended to the both sides of T font joint spare (21).
5. A self-operated gas pressure reducing regulator as set forth in claim 1, wherein: a sliding groove (15) is formed in the inner wall of the top end of the airtight cover (3), and two first sliding blocks (16) are installed in the sliding groove (15) in a sliding mode.
6. A self-operated gas pressure reducing regulator as set forth in claim 1, wherein: one end of the bidirectional threaded rod (14) extends to the outside of the airtight cover (3) and is fixedly connected with a knob (18).
7. A self-operated gas pressure reducing regulator as set forth in claim 1, wherein: all seted up on the both sides inner wall of airtight cover (3) roll groove (20), first lifter plate (9) are close to the both sides of roll groove (20) and all rotate and install guide pulley (19), and guide pulley (19) extend to in the roll groove (20).
8. A self-operated gas pressure reducing regulator as set forth in claim 1, wherein: the air-tight cover is characterized in that two guide rods (13) which are vertically arranged are fixedly connected to the inner wall of the top end of the air-tight cover (3), guide holes corresponding to the guide rods (13) are formed in the second lifting plate (12), and the second lifting plate (12) penetrates through the second lifting plate (12) through the guide holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011120687.4A CN112303305A (en) | 2020-10-19 | 2020-10-19 | Self-operated gas pressure reduction adjusting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011120687.4A CN112303305A (en) | 2020-10-19 | 2020-10-19 | Self-operated gas pressure reduction adjusting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112303305A true CN112303305A (en) | 2021-02-02 |
Family
ID=74328372
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011120687.4A Pending CN112303305A (en) | 2020-10-19 | 2020-10-19 | Self-operated gas pressure reduction adjusting device |
Country Status (1)
| Country | Link |
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| CN (1) | CN112303305A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201731082U (en) * | 2010-06-29 | 2011-02-02 | 江苏神通阀门股份有限公司 | Ash discharging valve |
| CN105221803A (en) * | 2015-08-30 | 2016-01-06 | 厦门市宜景环境工程有限公司 | Open automatic decompression valve soon |
| CN106545676A (en) * | 2016-10-28 | 2017-03-29 | 江阴市天润机械制造有限公司 | A kind of automatic gear-box pressure electromagnetic valve for adjusting |
| JP2017083981A (en) * | 2015-10-26 | 2017-05-18 | フシマン株式会社 | Self-regulating regulator |
| CN207602182U (en) * | 2017-10-30 | 2018-07-10 | 天津诸葛电子科技有限公司 | A kind of information display board |
| CN210198688U (en) * | 2019-05-29 | 2020-03-27 | 安徽省徽源电杆有限公司 | Stability detection device is used in reinforced concrete pole production |
| CN210266028U (en) * | 2019-06-20 | 2020-04-07 | 盐城奥克阀门有限公司 | Stop valve with backflow prevention structure |
| CN211114374U (en) * | 2019-07-24 | 2020-07-28 | 江苏永旺建筑工程有限公司 | Building module that can splice |
-
2020
- 2020-10-19 CN CN202011120687.4A patent/CN112303305A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201731082U (en) * | 2010-06-29 | 2011-02-02 | 江苏神通阀门股份有限公司 | Ash discharging valve |
| CN105221803A (en) * | 2015-08-30 | 2016-01-06 | 厦门市宜景环境工程有限公司 | Open automatic decompression valve soon |
| JP2017083981A (en) * | 2015-10-26 | 2017-05-18 | フシマン株式会社 | Self-regulating regulator |
| CN106545676A (en) * | 2016-10-28 | 2017-03-29 | 江阴市天润机械制造有限公司 | A kind of automatic gear-box pressure electromagnetic valve for adjusting |
| CN207602182U (en) * | 2017-10-30 | 2018-07-10 | 天津诸葛电子科技有限公司 | A kind of information display board |
| CN210198688U (en) * | 2019-05-29 | 2020-03-27 | 安徽省徽源电杆有限公司 | Stability detection device is used in reinforced concrete pole production |
| CN210266028U (en) * | 2019-06-20 | 2020-04-07 | 盐城奥克阀门有限公司 | Stop valve with backflow prevention structure |
| CN211114374U (en) * | 2019-07-24 | 2020-07-28 | 江苏永旺建筑工程有限公司 | Building module that can splice |
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Application publication date: 20210202 |
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| RJ01 | Rejection of invention patent application after publication |