CN106759670A - A kind of anti-negative pressure controller - Google Patents
A kind of anti-negative pressure controller Download PDFInfo
- Publication number
- CN106759670A CN106759670A CN201710187468.XA CN201710187468A CN106759670A CN 106759670 A CN106759670 A CN 106759670A CN 201710187468 A CN201710187468 A CN 201710187468A CN 106759670 A CN106759670 A CN 106759670A
- Authority
- CN
- China
- Prior art keywords
- check valve
- steady
- flow tank
- negative pressure
- metal ball
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000002184 metal Substances 0.000 claims abstract description 38
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 34
- 230000008878 coupling Effects 0.000 claims abstract description 6
- 238000010168 coupling process Methods 0.000 claims abstract description 6
- 238000005859 coupling reaction Methods 0.000 claims abstract description 6
- 230000005484 gravity Effects 0.000 claims abstract description 5
- 230000009471 action Effects 0.000 claims description 5
- 239000008400 supply water Substances 0.000 claims description 4
- 230000003247 decreasing effect Effects 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 2
- 230000000007 visual effect Effects 0.000 abstract description 2
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 238000007667 floating Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B7/00—Water main or service pipe systems
- E03B7/07—Arrangement of devices, e.g. filters, flow controls, measuring devices, siphons or valves, in the pipe systems
- E03B7/075—Arrangement of devices for control of pressure or flow rate
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Hydrology & Water Resources (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Check Valves (AREA)
- Float Valves (AREA)
Abstract
The present invention provides a kind of anti-negative pressure controller; including the connecting tube for being connected with steady-flow tank; the top of connecting tube is provided with check valve; check valve is spring check valve; check valve is connected as one with connecting tube by flange; check valve lower end is flexible coupling metal ball; metal ball is located in connecting tube; check valve upper end connects magnetic valve; magnetic valve electrical connection is installed on the excess flow protection device on flange, and excess flow protection device electrical connection can launch the switch board of such as audible ringing signal or visual alarm fault-signal.The beneficial effects of the invention are as follows：Thrust of the gas to valve plate when the design offsets one-way valve spring elastic force and exhaust using metal ball gravity, steady-flow tank is set to keep good connected state with ambient atmosphere, both be avoided that anti-negative pressure controller because air inflow is small make steady-flow tank in produce negative pressure condition generation, can make again the gas in steady-flow tank smoothly discharge reach the purpose that steady-flow tank fills water.
Description
Technical field
The present invention relates to municipal water supply equipment technical field, more particularly, to a kind of anti-negative pressure controller.
Background technology
During municipal water supply, prevention steady-flow tank in occur negative pressure be ensure normal water supply a vital task it
One.It is that anti-negative pressure controller is installed in steady-flow tank that traditional steady-flow tank eliminates negative pressure mode.Traditional anti-negative pressure controller is deposited
In automatic exhaust steam valve capacity not enough so that water can not be full of in steady-flow tank, or occur being produced in steady-flow tank because its air inflow is small
The drawbacks of raw negative pressure.Additionally, ball float in traditional anti-negative pressure controller mainly uses hard connecting mode, so as to cause the ball float cannot
Floating, falling action straight up and down is smoothly completed, easily causes ball float to be stuck, so that making traditional anti-negative pressure controller
Middle O-ring seal is destroyed, and its sealing property is deteriorated, and ultimately results in the situation for steady-flow tank leak occur.
As can be seen here, a kind of anti-negative pressure controller how is worked out, is possessed simple structure and is prevented effectively from steady-flow tank and deposit
It is current those skilled in the art's problem demanding prompt solution in the advantage of negative pressure.
The content of the invention
In order to solve the above problems, the invention provides a kind of anti-negative pressure controller.
A kind of anti-negative pressure controller of the present invention, including the connecting tube for being connected with steady-flow tank, the top of the connecting tube
Check valve is installed, the check valve is spring check valve, and the check valve is connected as one with the connecting tube by flange
Body, the check valve lower end is flexible coupling metal ball, and the metal ball is located in the connecting tube.
The operation principle of anti-negative pressure controller is：When water level does not arrive setting height in steady-flow tank, the check valve is in institute
State in fully open state under metal ball Action of Gravity Field, steady-flow tank is communicated with outside air, the pressure gauge on the steady-flow tank
It is shown as 0MPa；With in steady-flow tank, water level is raised, and buoyancy suffered by the metal ball gradually increases, and the inner elements of check valve is subject to
Pulling force be gradually reduced, the check valve is progressively closed, described unidirectional until when water level reaches setting height in the steady-flow tank
Valve is completely closed, and now the current stabilization pressure inside the tank is identical with city planting ductwork pressure of supply water, and pressure gauge is shown as 0.2MPa；Work as city
When political affairs water supply pressure is not enough or cuts off the water, water level decreasing in steady-flow tank, metal ball declines therewith, and check valve is pulled open, and air enters
The steady-flow tank, in order to avoid there is negative pressure.
Further, the check valve upper end connection magnetic valve, the magnetic valve electrical connection is installed on the flange
Excess flow protection device；When negative pressure controller exception, the check valve cannot normal switching-off when, the excess flow protection device is received and overflow
Stream signal simultaneously reaches PLC triggerings in the excess flow protection device circuit board and closes valve program and make the closed electromagnetic valve, and remembers simultaneously
Record this failure.
Further, excess flow protection device electrical connection can launching failure signal switch board.
Further, using the connection of high intensity, lightweight chain or rope between the metal ball and the check valve
It is fixed.
Further, the height of water level is regulated and controled by the length of the rope or chain in the steady-flow tank.
Further, fixed using thread connecting mode between the connecting tube and the steady-flow tank.
Further, the magnetic valve is connected with the check valve by screw thread or adpting flange.
A kind of anti-negative pressure controller of the present invention, compared with prior art with advantages below：
First, gas pair when the anti-negative pressure controller offsets elastic force and the exhaust of one-way valve spring using the gravity of metal ball
The thrust of valve plate, makes steady-flow tank keep good connected state with ambient atmosphere, and the design in steady-flow tank both it is possible to prevente effectively from prevent
There is the situation of negative pressure because air inflow is small in negative pressure controller, and gas in steady-flow tank can again smoothly discharged so as to realize current stabilization
Tank fills the purpose of water.
Secondly, when metal ball suspends or swims in the water surface, acting force of the spring and air are acted on valve plate in check valve
Closed check valve under power, to ensure that water overflows not from the steady-flow tank.Because metal ball and check valve be connected by being flexible coupling as
When high intensity, lightweight chain or rope etc. can ensure that metal ball is floated, check valve is closed naturally, and will not be because of metal ball
Rock and be not closed completely.Additionally, the tube wall can be defined guiding to the rise and fall track of metal ball, make metal ball in water
Give smoothly complete in the presence of buoyancy rise vertically and vertical drop action.
Finally, due to excess flow protection device and magnetic valve are also additionally arranged in the design, so solving check valve there is event
Valve closing is completed by magnetic valve to act, will not be overflowed with water storage in ensureing steady-flow tank during barrier；Due to the excess flow protection device
Be electrically connected with switch board, thus once check valve break down cannot normal switching-off when, excess flow protection device will be to switch board
Transmission fault-signal, switch board just sends the signals such as shutdown or sound and light alarm and reminds supervisor, it is seen that check valve in the design
Double protection is played to the normal work of steady-flow tank with magnetic valve, excess flow protection device and switch board.
Brief description of the drawings
Fig. 1 is structural representation of the invention；
Fig. 2 is the structural representation after the present invention is assembled with steady-flow tank.
In figure：1st, magnetic valve, 2, check valve, 3, flange, 4, connecting tube, 5, metal ball, 6, spiracle, 7, overflow protection dress
Put, 8, switch board, 9, steady-flow tank.
Specific embodiment
In order to be better understood from the present invention, the present invention is further retouched with reference to specific embodiments and the drawings
State.
As shown in Figure 1-2, a kind of anti-negative pressure controller, including the connecting tube 4 for being connected with steady-flow tank 9, the connection
The top of pipe 4 is provided with check valve 2, and the check valve 2 is spring check valve.The check valve 2 passes through with the connecting tube 4
Flange 3 is connected as one.The lower end of the check valve 2 is flexible coupling metal ball 5, and the metal ball 5 is located in the connecting tube 4.Institute
The upper end of check valve 2 connection magnetic valve 1 is stated, the magnetic valve 1 electrically connects the excess flow protection device 7 being installed on the flange 3.Institute
State excess flow protection device 7 and electrically connect the switch board 8 that can launch such as audible ringing signal or visual alarm fault-signal.
In order to realize be flexible coupling on the basis of reduce use cost to greatest extent, so by the metal ball 5 with it is described
It is designed as being connected using high intensity, lightweight chain or rope between check valve 2.The design can ensure that metal ball 5 is floated
When floating, check valve 2 is closed naturally, and will not be rocked because of metal ball 5 and be not closed completely.Rope can be connected using metal ball 5 simultaneously
Or the length of chain controls the height of water level in steady-flow tank 9.Wherein, the wall portion of connecting tube 4 is divided into fluctuating for metal ball 5
Track, it can be ensured that metal ball 5 occurs without floating everywhere and blocks or connecting rope or the phenomenon of chain abrasion.In the reclaimed water of steady-flow tank 9
When face constantly rises, the top that water may use the metal ball 5 in connecting tube 4 forms water seal, and now check valve 2 is already closed
Close, so in order that the air pressure of the top of metal ball 5 is consistent with the air pressure in steady-flow tank 9, so being opened in the upper end of the connecting tube 4
It is provided with spiracle 6.
In order to simplify the installation steps between the connecting tube 4 and the steady-flow tank 9, so by the connecting tube 4 and institute
State steady-flow tank 9 and be designed as being connected through a screw thread and be fixed as one.For the purposes of making between the magnetic valve 1 and the check valve 2
Assembly and disassembly more facilitate, so the magnetic valve 1 and the check valve 2 are designed as to be connected by screw thread or adpting flange
It is fixed.
The concrete operating principle of the anti-negative pressure controller is as described below：
When water level does not arrive setting height in steady-flow tank 9, the check valve 2 is ball float Action of Gravity Field in the metal ball 5
Fully open state is in down, and steady-flow tank 9 is communicated with outside air, and the pressure gauge on the steady-flow tank 9 is shown as 0MPa；With
Water level is raised in steady-flow tank 9, and buoyancy suffered by the metal ball 5 gradually increases, and the pulling force that the valve element of the check valve 2 is subject to gradually subtracts
Small, the check valve 2 is progressively closed, until when water level reaches setting height in the steady-flow tank 9, the check valve 2 is closed completely
Close.Now pressure is identical with city planting ductwork pressure of supply water in the steady-flow tank 9, and pressure gauge is shown as 0.2MPa.
When municipal water supply hydraulic pressure is not enough or cuts off the water, water level decreasing in steady-flow tank 9, metal ball 5 declines therewith, check valve
2 pull open, and air enters the steady-flow tank 9, in order to avoid there is negative pressure.
When negative pressure controller exception, i.e., described check valve 2 because there is foreign matter or failure cannot normal switching-off when, it is described to overflow
Stream protection device 7 receives PLC triggerings pass valve program during overflow alarm reaches the circuit board of excess flow protection device 7 makes the magnetic valve 1
Close, and record this failure simultaneously.
When metal ball 5 is damaged, magnetic valve 1 is closed and alarmed, so as to prevent steady-flow tank 9 from being gone back while there is leak situation
Can accomplish to notify that relevant staff replaces metal ball 5 in time, with being normally carried out for the work that ensures subsequently to supply water.
Embodiments of the invention have been described in detail above, but the content is only presently preferred embodiments of the present invention,
It is not to be regarded as limiting practical range of the invention.All impartial changes made according to the scope of the invention and improvement etc., all should
Still belong within this patent covering scope.
Claims (7)
1. a kind of anti-negative pressure controller, it is characterised in that：Including the connecting tube (4) for being connected with steady-flow tank (9), the connection
The top for managing (4) is provided with check valve (2), and the check valve (2) is spring check valve, the check valve (2) and the company
Adapter (4) is connected as one by flange (3), and check valve (2) lower end is flexible coupling metal ball (5), metal ball (5) position
In the connecting tube (4)；
When steady-flow tank (9) interior water level does not arrive setting height, the check valve (2) is located under the metal ball (5) Action of Gravity Field
In fully open state, steady-flow tank (9) is communicated with outside air, and the pressure gauge on the steady-flow tank (9) is shown as 0MPa；When steady
When water level gradually rises in stream tank (9), buoyancy suffered by the metal ball (5) gradually increases, and check valve (2) valve element is subject to
Pulling force is gradually reduced, and the check valve (2) is progressively closed, until when the steady-flow tank (9) interior water level reaches setting height, it is described
Check valve (2) is completely closed, and now the interior pressure of the steady-flow tank (9) is identical with city planting ductwork pressure of supply water, and pressure gauge is shown as
0.2MPa；
When municipal water supply hydraulic pressure is not enough or cuts off the water, steady-flow tank (9) interior water level decreasing, metal ball (5) declines therewith, check valve
(2) pull open, air enters the steady-flow tank (9), in order to avoid there is negative pressure.
2. anti-negative pressure controller according to claim 1, it is characterised in that：Check valve (2) upper end connects magnetic valve
(1), magnetic valve (1) electrical connection is installed on the excess flow protection device (7) on the flange (3)；When negative pressure controller exception,
The check valve (2) cannot normal switching-off when, during the excess flow protection device (7) receives overflow alarm and reaches its circuit board
Valve program is closed in PLC triggerings closes the magnetic valve (1), and records this failure simultaneously.
3. anti-negative pressure controller according to claim 2, it is characterised in that：Excess flow protection device (7) electrical connection can
The switch board (8) of launching failure signal.
4. anti-negative pressure controller according to claim 2, it is characterised in that：The metal ball (5) and the check valve (2)
Between be connected using high intensity, lightweight chain or rope.
5. anti-negative pressure controller according to claim 2, it is characterised in that：The low pass high of the interior water level of the steady-flow tank (9)
The length for crossing the rope or chain is regulated and controled.
6. anti-negative pressure controller according to claim 2, it is characterised in that：The connecting tube (4) and the steady-flow tank (9)
Between be connected through a screw thread fixation.
7. the anti-negative pressure controller according to any one in claim 2-6, it is characterised in that：The magnetic valve (1) with
The check valve (2) is connected by screw thread or adpting flange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710187468.XA CN106759670B (en) | 2017-03-27 | 2017-03-27 | Negative pressure prevention controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710187468.XA CN106759670B (en) | 2017-03-27 | 2017-03-27 | Negative pressure prevention controller |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106759670A true CN106759670A (en) | 2017-05-31 |
| CN106759670B CN106759670B (en) | 2023-07-14 |
Family
ID=58966392
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710187468.XA Active CN106759670B (en) | 2017-03-27 | 2017-03-27 | Negative pressure prevention controller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106759670B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108005171A (en) * | 2018-01-22 | 2018-05-08 | 天津英铁科技有限公司 | A kind of pneumatic self-controlled continuous pressure water system of energy storage |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201159857Y (en) * | 2008-02-27 | 2008-12-03 | 耿迪远 | Automatic liquid level regulating device |
| CN201827496U (en) * | 2010-09-16 | 2011-05-11 | 李玉源 | Negative-pressure preventive control valve |
| CN204570829U (en) * | 2015-01-26 | 2015-08-19 | 中美金光(北京)水务科技有限公司 | The compensation pipe network pressure-superposed box supply equipment of a kind of residual quantity |
| CN204828804U (en) * | 2015-08-19 | 2015-12-02 | 响水县智诚知识产权信息服务有限公司 | Check valve with adjustable |
| CN205653840U (en) * | 2016-05-09 | 2016-10-19 | 华岩能源技术（北京）有限公司 | Novel no negative pressure water supply system vacuum inhibitor |
| CN205918983U (en) * | 2016-07-11 | 2017-02-01 | 中国水产科学研究院南海水产研究所 | Mechanical type water level control switch |
| CN207846542U (en) * | 2017-03-27 | 2018-09-11 | 天津晨天自动化设备工程有限公司 | A kind of anti-negative pressure controller |
-
2017
- 2017-03-27 CN CN201710187468.XA patent/CN106759670B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201159857Y (en) * | 2008-02-27 | 2008-12-03 | 耿迪远 | Automatic liquid level regulating device |
| CN201827496U (en) * | 2010-09-16 | 2011-05-11 | 李玉源 | Negative-pressure preventive control valve |
| CN204570829U (en) * | 2015-01-26 | 2015-08-19 | 中美金光(北京)水务科技有限公司 | The compensation pipe network pressure-superposed box supply equipment of a kind of residual quantity |
| CN204828804U (en) * | 2015-08-19 | 2015-12-02 | 响水县智诚知识产权信息服务有限公司 | Check valve with adjustable |
| CN205653840U (en) * | 2016-05-09 | 2016-10-19 | 华岩能源技术（北京）有限公司 | Novel no negative pressure water supply system vacuum inhibitor |
| CN205918983U (en) * | 2016-07-11 | 2017-02-01 | 中国水产科学研究院南海水产研究所 | Mechanical type water level control switch |
| CN207846542U (en) * | 2017-03-27 | 2018-09-11 | 天津晨天自动化设备工程有限公司 | A kind of anti-negative pressure controller |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108005171A (en) * | 2018-01-22 | 2018-05-08 | 天津英铁科技有限公司 | A kind of pneumatic self-controlled continuous pressure water system of energy storage |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106759670B (en) | 2023-07-14 |
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| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20201110 Address after: 300000 Jingde Garden 11-2-1701 (Science and Technology Park) on the southwest side of the intersection of Dongma Road and Beicheng Street, Nankai District, Tianjin Applicant after: TIANJIN CHENTIAN AUTOMATION EQUIPMENT ENGINEERING Co.,Ltd. Address before: No.5, HongRi South Road, Nankai District, Tianjin (back door of Tianjin Jingwei knitting factory) Applicant before: TIANJIN HONGJIE INSTALLATION ENGINEERING Co.,Ltd. |
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