CN107975128A - A kind of Passive Shape Control device in low-pressure drainage system - Google Patents
A kind of Passive Shape Control device in low-pressure drainage system Download PDFInfo
- Publication number
- CN107975128A CN107975128A CN201711370995.0A CN201711370995A CN107975128A CN 107975128 A CN107975128 A CN 107975128A CN 201711370995 A CN201711370995 A CN 201711370995A CN 107975128 A CN107975128 A CN 107975128A
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- connecting rod
- vertical connecting
- lever
- position block
- control device
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Classifications
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/10—Collecting-tanks; Equalising-tanks for regulating the run-off; Laying-up basins
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/22—Adaptations of pumping plants for lifting sewage
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Hydrology & Water Resources (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Sewage (AREA)
Abstract
The invention discloses the Passive Shape Control device in a kind of low-pressure drainage system, including sewage collecting babinet and the floating ball for being arranged on sewage collecting box house, further include the leverage being arranged at the top of sewage collecting babinet, one end of lever is provided with vertical connecting rod one in leverage, one end of vertical connecting rod one is extend into sewage collecting babinet to be connected with floating ball, the other end of lever is provided with vertical connecting rod two, the control air circuit breaker of vacuum drain valve is connected in one end of vertical connecting rod two and low-pressure drainage system, acted by the drive control air circuit breaker that moves up and down of vertical connecting rod two, control gas circuit to vacuum drain valve is led to, disconnected state is controlled, so as to control being turned on and off for vacuum drain valve.The present invention without electrical control, ensure that service personnel personal safety and its can automatically control low-pressure drainage system according to actual condition and timely the sewage in Urban Underground pipe gallery discharged.
Description
Technical field
The present invention relates to a kind of Passive Shape Control device, more particularly to vacuum collecting terminal valve is controlled in a kind of low-pressure drainage system
The Passive Shape Control device that door opens and closes.
Background technology
Pipe gallery is exactly underground urban duct synthesis corridor, i.e., builds a tunnel space in Urban Underground, by electric power,
The various utilities pipelines such as communication, combustion gas, heat supply, plumbing are integrated in one, equipped with special access hole, hoisting port and monitoring system
System, implements unified planning, Uniting, unified construction and management, is the important infrastructure and " life for ensureing city operations
Line ".
Urban Underground pipe gallery after building up, can because a variety of causes produce percolating water, seriously affect equipment in piping lane,
The safe handling of pipeline, cable, therefore, it is necessary to be drained underground leakage sewage by drainage system.The row of low-pressure drainage system
Water water velocity can reach 3-6 meter per seconds, be 3-6 times of normal discharge system, be a kind of very energy saving and efficient draining skill
Art；Drain in addition, low-pressure drainage system can install cutting machine additional and crush the solids such as rubble in entrance, therefore low-pressure drainage system energy
Drain the debris such as swill, mud, polybag, rubble, brick, it is not easy to block pipeline, have due to low-pressure drainage system more than
Advantage, gets up so utilization of the low-pressure drainage system in Urban Underground pipe gallery is also more and more.
Since draining environment is in Urban Underground pipe gallery, more particularly to the draining in combustion gas storehouse, if using one
As electric controller, just in case occur electric leakage or produce electric spark, will threaten to the personal safety of service personnel, very
It is unexpected to explosion etc. occurs.Therefore, it is badly in need of designing a kind of controller for not using electrical control come in low-pressure drainage system
Terminal is collected valve and is controlled.
By retrieval, the patent document similar with the application is not found, it is as follows with the relevant patent document of the application：
Authorization Notice No. is CN201420893Y, and authorized announcement date discloses one for the Chinese utility model on March 10th, 2010
Kind of ball-cock assembly, including valve body, valve body front end are provided with supporting frame, and the rear end of valve body is threaded with water inlet pipe, in the valve body
The valve hole connected with water inlet pipe is provided with, the lower part of supporting frame is equipped with shaft, is provided with shaft rotatably and blocks the valve
The spool of aperture of door, the lower end of spool are connected with floating ball by lever.
Authorization Notice No. is CN203453759U, and authorized announcement date is that the Chinese utility model of on 2 26th, 2014 discloses
A kind of automatic vacuum drainage arrangement, for carrying out gas-liquid separation and automatically discharging the liquid after separation, it include by up to
The cylinder of epicoele and cavity of resorption, the top chamber being arranged on the cylinder are divided into by partition plate down, the top chamber with it is described
It is connected between epicoele by the first unicom mouth, the second unicom mouth being connected with outside is offered on the top chamber, it is described
Cylinder in be provided with the perforation epicoele and the cavity of resorption and upper end be connected with the top chamber, lower end and described
The qi of chong channel ascending adversely pipe that cavity of resorption is connected, be connected with the cylinder where the epicoele for gas-liquid mixture enter the cylinder into
Gas port and the gas outlet being connected with vacuum pump, be connected with the cylinder at the partition plate with the epicoele and it is described under
The water outlet that chamber is connected, is provided with the check valve being connected with the epicoele, the cavity of resorption in the water outlet
Bottom be connected with the outlet tube of check-valves；The lever assembly with fulcrum, the lever are set in the top chamber
It is connected on component and corresponding first lid of the first unicom mouth, corresponding with the second unicom mouth
Second lid and the rod that connects extended in the qi of chong channel ascending adversely pipe, the lower end of the connection rod set floating ball；When described
When one lid closes the first unicom mouth, the second unicom mouth described in second Cover opening, when described first
During the first unicom mouth described in Cover opening, second lid closes the second unicom mouth.
Authorization Notice No. is CN206592757U, and authorized announcement date discloses for the Chinese utility model on October 27th, 2017
A kind of lever type water draining device, including shell, the side wall of outer shell enter pipe equipped with carbonated drink, and the cover top portion is equipped with air outlet pipe,
The outer casing bottom is equipped with outlet pipe, and bottom is connected with surge drum in the shell, is inserted with floating block at the top of the surge drum, institute
State floating block bottom and limiting plate is installed, the floating block is connected with floating ball, the floating ball and water outlet tube end phase by leverage
Contact, the shell inner top are equipped with protrusion, and the protrusion bottom is connected with bimetal leaf by latch, and the bimetal leaf is another
One end is connected with valve block, and the valve block is inserted in air outlet pipe.
But all without the technical solution of open the application in above patent document.
To sum up, the Passive Shape Control device in a kind of low-pressure drainage system how is designed, it is ensured without electrical control
The personal safety of service personnel and low-pressure drainage system can be automatically controlled timely to Urban Underground integrated pipe according to actual condition
It is the technical problem for being badly in need of solving that sewage in corridor, which carries out discharge,.
The content of the invention
The technical problems to be solved by the invention are to be directed to defect existing in the prior art, there is provided a kind of vacuum drainage system
Passive Shape Control device in system, its without electrical control, ensure that service personnel personal safety and its can be according to actual work
Condition, automatically controls low-pressure drainage system and timely the sewage in Urban Underground pipe gallery is discharged.
In order to solve the above technical problems, the technical solution used in the present invention is：It is passive in a kind of low-pressure drainage system
Controller, including sewage collecting babinet and the floating ball for being arranged on sewage collecting box house, the Passive Shape Control device, which further includes, to be set
Put the leverage at the top of sewage collecting babinet, one end of lever is provided with vertical connecting rod one, vertical company in leverage
One end of bar one extend into sewage collecting babinet and is connected with floating ball, and the other end of lever is provided with vertical connecting rod two, hangs down
Into one end of connecting rod two and low-pressure drainage system, the control air circuit breaker of vacuum drain valve is connected, and passes through vertical connecting rod two
Move up and down drive control air circuit breaker action, the control gas circuit switching state to vacuum drain valve is controlled, so as to control
Vacuum drain valve processed is turned on and off.
The control air circuit breaker includes contactor and the electric switch or air valve that are connected with contactor, vertical connecting rod two
One end is connected with contactor；By vertical connecting rod two drive contactor act so that control be connected with contactor it is electric
Switch or air valve action, by electric switch or air valve action come the control gas circuit to vacuum drain valve in low-pressure drainage system
Switching state is controlled, so as to control being turned on and off for vacuum drain valve.
Preferably, vertical connecting rod one can be moved up and down through one end of lever and vertical connecting rod one along one end of lever,
Expose on the vertical connecting rod one of sewage collecting babinet and be provided with upper limit position block one and lower position block one, one end of lever is arranged on
Position between upper limit position block one and lower position block one；When vertical connecting rod one moves up and down, pass through upper limit position block one and lever
One end be in contact or be in contact by lower position block one with one end of lever so that lever action.
Preferably, vertical connecting rod two through lever other end and vertical connecting rod two can along in the other end of lever,
Lower movement, is provided with upper limit position block two and lower position block two on the vertical connecting rod two for exposing to dirty water collecting tank body, lever
Other end is arranged on the position between upper limit position block two and lower position block two；When lever other end moves up and down, pass through
Upper limit position block two is in contact with the other end of lever or is in contact by lower position block two with the other end of lever so that hangs down
Moved up and down to connecting rod two.
Preferably, the leverage further includes pillar, and lever and branch are column articulated, the hinge joint of lever and pillar and vertical
The distance between connecting rod one is more than the distance between lever and the hinge joint of pillar and vertical connecting rod two.
Preferably, elastic positioning device is additionally provided with pillar, vertical connecting rod two is carried out by elastic positioning device
It is flexibly positioned.
Preferably, elastic positioning device includes the supporting block being arranged on pillar and the spring top being arranged in supporting block
Pin, is provided with positioning groove and lower positioning groove on the outer circumferential surface of the vertical connecting rod two near supporting block；Pass through bullet
One end of spring thimble be inserted into positioning groove or by spring thimble be inserted into upper positioning groove to vertical connecting rod two into
Row positioning.
Preferably, one end width of the width of upper positioning groove and spring thimble matches, and the width of lower positioning groove is big
Width in spring thimble one end.
Preferably, vertical stop sleeve one, one end of vertical connecting rod one are additionally provided with the top of sewage collecting babinet
It extend into sewage collecting babinet through vertical stop sleeve one and is connected with floating ball；Vertical stop sleeve is additionally provided with pillar
Two, vertical connecting rod two can vertically stop sleeve two be moved up and down through vertical stop sleeve two and vertical connecting rod two.
The beneficial effects of the present invention are：The present invention can ensure that service personnel by design without electrical control
Personal safety and its low-pressure drainage system can be automatically controlled timely in Urban Underground pipe gallery according to actual condition
Sewage is discharged.Accurately controlled by two extreme positions for setting upper limit position block one and lower position block a pair of floating ball to move
System and the diverse location by varying upper limit position block one and lower position block one on vertical connecting rod one, can according to actual condition,
Opening and closing opportunity to vacuum drain valve, which is made, to be accurately controlled, so as to improve the practicality of the present invention.By setting elasticity fixed
Position device is flexibly positioned to lever progress, so as to can guarantee that the stability of the state of a control of whole controller.By to upper positioning
Groove, the matched design of lower positioning groove and spring thimble one end, can guarantee that the balance of lever moment, so as to further improve
The work functions of controller.
Brief description of the drawings
Fig. 1 is the principle of the present invention schematic diagram；
Fig. 2 is the structure diagram of the present invention；
Fig. 3 is the partial structural diagram at spring thimble in Fig. 2；
In figure：1. sewage collecting babinet, 2. floating balls, 3. levers, 4. vertical connecting rods one, 5. vertical connecting rods two, 6. contacts
Device, 7. electric switches or air valve, 8. upper limit position blocks one, 9. lower position blocks one, 10. upper limit position blocks two, 11. lower position blocks
Two, 12. pillars, 13. elastic positioning devices, 131. supporting blocks, 132. spring thimbles, positioning groove on 14., under 15.
Positioning groove, 16. vertical stop sleevees one, 17. vertical stop sleevees two.
Embodiment
Further details of elaboration is done to technical scheme with specific embodiment below in conjunction with the accompanying drawings.
Embodiment：As depicted in figs. 1 and 2, the Passive Shape Control device in a kind of low-pressure drainage system, including sewage collecting babinet
1 and the floating ball 2 that is arranged on sewage collecting babinet 1 inside, the Passive Shape Control device, which further includes, to be arranged at the top of sewage collecting babinet 1
On leverage, one end of lever 3 is provided with vertical connecting rod 1 in leverage, and one end of vertical connecting rod 1 extend into dirt
It is connected in water collection tank body 1 with floating ball 2, the other end of lever 3 is provided with vertical connecting rod 25, one end of vertical connecting rod 25
It is connected with the control air circuit breaker of vacuum drain valve in low-pressure drainage system, control gas circuit is driven by vertical connecting rod 25
Switch motion, is controlled the control gas circuit switching state of vacuum drain valve in low-pressure drainage system, so as to control vacuum to arrange
Let out being turned on and off for valve.Sewage collecting babinet is arranged in Urban Underground pipe gallery, the sewage in sewage collecting babinet
During so that floating ball rising to certain position, by the effect of lever, vertical connecting rod two is driven to move down so that controlling gas circuit to open
Pass acts so that the control gas circuit of vacuum drain valve is in channel status, and control vacuum drain valve is opened, by sewage collecting babinet
In sewage discharge；With the discharge of sewage in sewage collecting babinet, floating ball declines with liquid level, passes through the effect of lever, band
Move vertical connecting rod two and move upwardly so that control air circuit breaker action so that the control gas circuit of vacuum drain valve is in breaking shape
State, control vacuum drain valve are closed.Pass through above-mentioned design so that the present embodiment ensure that maintenance people without electrical control
Member personal safety and its low-pressure drainage system can be automatically controlled timely in Urban Underground pipe gallery according to actual condition
Sewage discharged.
The control air circuit breaker includes contactor 6 and the electric switch or air valve 7 that are connected with contactor 6, vertical connecting rod
25 one end is connected with contactor 6；Drive contactor 6 to act by vertical connecting rod 25, connect so as to control with contactor 6
The electric switch or air valve 7 connect acts, by electric switch or the action of air valve 7 come to vacuum drain valve in low-pressure drainage system
Control gas circuit switching state is controlled, so as to control being turned on and off for vacuum drain valve.
Vertical connecting rod 1 can be moved up and down through one end of lever 3 and vertical connecting rod 1 along one end of lever 3, outside
It is exposed on the vertical connecting rod 1 of sewage collecting babinet and is provided with upper limit position block 1 and lower position block 1, one end of lever 3 is set
Position between upper limit position block 1 and lower position block 1；When vertical connecting rod 1 moves up and down, pass through upper limit position block 1
It is in contact with one end of lever 3 or is in contact by lower position block 1 with one end of lever 3 so that lever action.Upper limit position block
One and lower position block one equivalent to two extreme positions that floating ball moves, when row of the end between two extreme positions of lever
Moved in journey, be the state of a control that will not change whole controller.By setting upper limit position block one and lower position block a pair of floating
Two extreme positions of ball movement carry out accurately control and by varying upper limit position block one and lower position block one in vertical connecting rod
Diverse location on one, can be according to actual condition, and the opening and closing opportunity to vacuum drain valve, which is made, to be accurately controlled, so as to improve
The practicality of the present embodiment.
The other end and vertical connecting rod 25 of vertical connecting rod 25 through lever 3 can be along the upper and lower shiftings of other end of lever 3
It is dynamic, upper limit position block 2 10 and lower position block 2 11, lever 3 are provided with the vertical connecting rod 25 for exposing to dirty water collecting tank body
Other end be arranged on position between upper limit position block 2 10 and lower position block 2 11；When lever other end moves up and down
When, the other end that is in contact by upper limit position block 2 10 with the other end of lever 3 or passes through lower position block 2 11 and lever 3
It is in contact so that vertical connecting rod 25 moves up and down.
Vertically axial the distance between upper limit position block 1 and lower position block 1 L1 of connecting rod one is more than vertically connecting rod two
The distance between axial upper limit position block 2 10 and lower position block 2 11 L2.
The leverage further includes pillar 12, and lever 3 is hinged with pillar 12, the hinge joint A of lever and pillar and vertical
The distance between connecting rod 1 is more than the distance between lever and the hinge joint A of pillar and vertical connecting rod 25.
Elastic positioning device 13 is additionally provided with pillar, elasticity is carried out to vertical connecting rod two by elastic positioning device 13
Positioning, so as to can guarantee that the stability of the state of a control of whole controller.
As shown in figure 3, elastic positioning device 13 includes the supporting block 131 being arranged on pillar 12 and is arranged on supporting block
Spring thimble 132 on 131, positioning groove is provided with the outer circumferential surface of the vertical connecting rod 25 near supporting block 131
14 and lower positioning groove 15；It is inserted into upper positioning groove 14 by one end of spring thimble 132 or is inserted into by spring thimble
Vertical connecting rod 25 is positioned into upper positioning groove 15.When vertical connecting rod two, which moves down control vacuum drain valve, to be opened, bullet
One end of spring thimble 132, which is inserted into positioning groove 14, positions vertical connecting rod two, when vertical connecting rod two moves up control
When vacuum drain valve is closed, one end of spring thimble 132, which is inserted into lower positioning groove 15, positions vertical connecting rod two.
The width of upper positioning groove 14 matches with one end width of spring thimble 132, when one end of spring thimble 132 is inserted
After entering, it is in close contact together between 132 one end of spring thimble and upper positioning groove 14.The width D 1 of lower positioning groove 15 is more than
The width D 2 of 132 one end of spring thimble, after one end insertion of spring thimble 132, be by one end of spring thimble 132 with
A side of positioning groove 15 is in contact to position lever, so sets the balance that can guarantee that lever moment, so that
Further improve the work functions of controller.
As shown in Fig. 2, vertical stop sleeve 1 is additionally provided with the top of sewage collecting babinet, vertical connecting rod 1
One end extend into sewage collecting babinet 1 through vertical stop sleeve 1 and be connected with floating ball 2.
Be additionally provided with vertical stop sleeve 2 17 on pillar 12, vertical connecting rod 25 through vertical stop sleeve 2 17 and
Vertical connecting rod 25 can vertically stop sleeve 2 17 move up and down.Vertical stop sleeve can use oilless bushing.
To sum up, the present invention without electrical control, can ensure that personal safety and its energy of service personnel by design
According to actual condition, automatically control low-pressure drainage system and timely the sewage in Urban Underground pipe gallery is discharged.It is logical
Cross set upper limit position block one and lower position block a pair of floating ball movement two extreme positions carry out accurately control and by varying
The diverse location of upper limit position block one and lower position block one on vertical connecting rod one, can be according to actual condition, to vacuum drain valve
Opening and closing opportunity, which is made, to be accurately controlled, so as to improve the practicality of the present invention.By set elastic positioning device to lever into
Row is flexibly positioned, so as to can guarantee that the stability of the state of a control of whole controller.By to upper positioning groove, lower positioning groove
With the matched design in spring thimble one end, the balance of lever moment can guarantee that, so as to further improve the work work(of controller
Energy.
" multiple " described in the present embodiment refer to the quantity of " two or more ".Above example is only for illustrating this
Invention is used, rather than limitation of the present invention, and person skilled in the relevant technique is not departing from the spirit and scope of the present invention
In the case of, it can also make a variety of changes or convert, therefore all equivalent technical solutions should also belong to the guarantor of the present invention
Scope is protected, protection scope of the present invention should be limited by each claim.
Claims (9)
1. the Passive Shape Control device in a kind of low-pressure drainage system, including sewage collecting babinet and it is arranged on sewage collecting box house
Floating ball, it is characterised in that：The Passive Shape Control device further includes the leverage being arranged at the top of sewage collecting babinet, lever
One end of lever is provided with vertical connecting rod one in mechanism, and one end of vertical connecting rod one is extend into sewage collecting babinet to be connected with floating ball
Connect, the other end of lever is provided with vertical connecting rod two, vacuum is drained in one end of vertical connecting rod two and low-pressure drainage system
The control air circuit breaker of valve is connected, and is acted by the drive control air circuit breaker that moves up and down of vertical connecting rod two, to vacuum
The control gas circuit switching state of bleed valve is controlled, so as to control being turned on and off for vacuum drain valve.
2. Passive Shape Control device according to claim 1, it is characterised in that：It is described control air circuit breaker include contactor and with
The electric switch or air valve of contactor connection, one end and the contactor of vertical connecting rod two are connected；Pass through vertical two band of connecting rod
Dynamic contactor action, so as to control the electric switch being connected with contactor or air valve to act, is acted by electric switch or air valve
To be controlled to the control gas circuit switching state of vacuum drain valve in low-pressure drainage system, so as to control vacuum drain valve
It is turned on and off.
3. Passive Shape Control device according to claim 2, it is characterised in that：Vertical connecting rod one is through one end of lever and vertical
Connecting rod one can be moved up and down along one end of lever, and upper limit is provided with the vertical connecting rod one for exposing to dirty water collecting tank body
Block one and lower position block one, one end of lever are arranged on the position between upper limit position block one and lower position block one；When vertical connecting rod
One when moving up and down, and is in contact by upper limit position block one with one end of lever or one end phase by lower position block one and lever
Contact so that lever action.
4. Passive Shape Control device according to claim 3, it is characterised in that：Vertical connecting rod two through lever other end and
Vertical connecting rod two can be moved up and down along the other end of lever, be set on the vertical connecting rod two for exposing to dirty water collecting tank body
There are upper limit position block two and lower position block two, the other end of lever is arranged on the position between upper limit position block two and lower position block two
Put；When lever other end moves up and down, it is in contact by upper limit position block two with the other end of lever or passes through lower limit
Block two is in contact with the other end of lever so that vertical connecting rod two moves up and down.
5. the Passive Shape Control device according to any one claim in Claims 1-4, it is characterised in that：The lever
Mechanism further includes pillar, and lever is column articulated with propping up, and the distance between hinge joint and vertical connecting rod one of lever and pillar are more than thick stick
The distance between hinge joint and vertical connecting rod two of bar and pillar.
6. Passive Shape Control device according to claim 5, it is characterised in that：Elastic positioning device is additionally provided with pillar,
Vertical connecting rod two is carried out by elastic positioning device flexibly positioned.
7. Passive Shape Control device according to claim 6, it is characterised in that：Elastic positioning device includes being arranged on pillar
Supporting block and the spring thimble being arranged in supporting block, are provided with the outer circumferential surface of the vertical connecting rod two near supporting block
Upper positioning groove and lower positioning groove；It is inserted into upper positioning groove by one end of spring thimble or is inserted into by spring thimble
Vertical connecting rod two is positioned into upper positioning groove.
8. Passive Shape Control device according to claim 7, it is characterised in that：The width of upper positioning groove and the one of spring thimble
End width matches, and the width of lower positioning groove is more than the width of spring thimble one end.
9. Passive Shape Control device according to claim 8, it is characterised in that：It is additionally provided with the top of sewage collecting babinet
Vertical stop sleeve one, one end of vertical connecting rod one is extend into sewage collecting babinet through vertical stop sleeve one to be connected with floating ball
Connect；Vertical stop sleeve two is additionally provided with pillar, vertical connecting rod two passes through vertical stop sleeve two and two energy of vertical connecting rod
Vertically stop sleeve two moves up and down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711370995.0A CN107975128B (en) | 2017-12-19 | 2017-12-19 | Passive controller in vacuum drainage system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711370995.0A CN107975128B (en) | 2017-12-19 | 2017-12-19 | Passive controller in vacuum drainage system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107975128A true CN107975128A (en) | 2018-05-01 |
| CN107975128B CN107975128B (en) | 2020-04-07 |
Family
ID=62006921
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711370995.0A Active CN107975128B (en) | 2017-12-19 | 2017-12-19 | Passive controller in vacuum drainage system |
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| Country | Link |
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| CN (1) | CN107975128B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2761539Y (en) * | 2004-10-13 | 2006-03-01 | 王成楷 | Automatic drainage device of vacuum tank |
| CN2854235Y (en) * | 2005-09-29 | 2007-01-03 | 宝山钢铁股份有限公司 | Automatic drainage device of oil-water separator of gas cabinet |
| CN101349073A (en) * | 2008-06-05 | 2009-01-21 | 浙江真创机电科技有限公司 | Vacuum collecting and discharging system |
| CN203374303U (en) * | 2013-07-19 | 2014-01-01 | 淮南润成科技股份有限公司 | Negative pressure water releasing device |
| CN205715950U (en) * | 2016-06-08 | 2016-11-23 | 信丰正天伟电子科技有限公司 | A kind of constant temperature and humidity machine automatic water-replenishing device |
| CN206377302U (en) * | 2016-12-26 | 2017-08-04 | 湖南真创环保科技有限公司 | It is a kind of for vacuum drain valve without electric-type hand control valve |
-
2017
- 2017-12-19 CN CN201711370995.0A patent/CN107975128B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2761539Y (en) * | 2004-10-13 | 2006-03-01 | 王成楷 | Automatic drainage device of vacuum tank |
| CN2854235Y (en) * | 2005-09-29 | 2007-01-03 | 宝山钢铁股份有限公司 | Automatic drainage device of oil-water separator of gas cabinet |
| CN101349073A (en) * | 2008-06-05 | 2009-01-21 | 浙江真创机电科技有限公司 | Vacuum collecting and discharging system |
| CN203374303U (en) * | 2013-07-19 | 2014-01-01 | 淮南润成科技股份有限公司 | Negative pressure water releasing device |
| CN205715950U (en) * | 2016-06-08 | 2016-11-23 | 信丰正天伟电子科技有限公司 | A kind of constant temperature and humidity machine automatic water-replenishing device |
| CN206377302U (en) * | 2016-12-26 | 2017-08-04 | 湖南真创环保科技有限公司 | It is a kind of for vacuum drain valve without electric-type hand control valve |
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| Publication number | Publication date |
|---|---|
| CN107975128B (en) | 2020-04-07 |
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