CN105862984B - A kind of stabilized voltage device and its pressure-stabilizing water supply method - Google Patents
A kind of stabilized voltage device and its pressure-stabilizing water supply method Download PDFInfo
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- CN105862984B CN105862984B CN201610347661.0A CN201610347661A CN105862984B CN 105862984 B CN105862984 B CN 105862984B CN 201610347661 A CN201610347661 A CN 201610347661A CN 105862984 B CN105862984 B CN 105862984B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 119
- 238000000034 method Methods 0.000 title claims abstract description 12
- 230000001681 protective effect Effects 0.000 claims abstract description 158
- 230000000087 stabilizing effect Effects 0.000 claims abstract description 25
- 230000006698 induction Effects 0.000 claims abstract description 4
- 238000001514 detection method Methods 0.000 claims description 9
- 241000973497 Siphonognathus argyrophanes Species 0.000 claims 1
- 239000008399 tap water Substances 0.000 description 6
- 235000020679 tap water Nutrition 0.000 description 6
- 230000002950 deficient Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000009736 wetting Methods 0.000 description 2
- 235000020188 drinking water Nutrition 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
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- 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
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- 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)
- Fluid-Pressure Circuits (AREA)
Abstract
The present invention relates to a kind of purifiers; disclose a kind of stabilized voltage device and its pressure-stabilizing water supply method; it includes water pipe; it is successively arranged low-pressure protective valve (3), booster pump (4), the first high voltage protective valve (5) and pressure stabilizing bucket (7) on water pipe, further includes the controller (6) being all connected with low-pressure protective valve (3), booster pump (4) and the first high voltage protective valve (5);Low-pressure protective valve (3), the first high voltage protective valve (5) are used in induction water pipe hydraulic pressure in real time and are sent to the hydraulic signal sensed controller (6), and controller (6) is according to hydraulic signal control booster pump (4) work received.The present invention is adjusted by two cooperations between pressure protection valve and booster pump; so that the hydraulic pressure of water is maintained in required voltage stabilized range; it causes equipment damage or personnel safety to threaten to which guarantee is i.e. not too high, equipment too low will not be caused to dally and reduce service life of equipment.
Description
Technical field
The present invention relates to a kind of purifiers, more particularly to a kind of stabilized voltage device and its pressure-stabilizing water supply method.
Background technique
The pressure stabilizing of tap water is for particularly important as the equipment at water source using tap water, machine equipment of especially drinking water only, if
Tap water water source is too high or too low, all cisco unity malfunction.When tap water hydraulic is excessively high, equipment, or even meeting may be damaged
Cause the loss of property and the danger of personnel;When tap water hydraulic is too low, though it not will cause the danger of personnel, when equipment is long
Between dry running, will cause the failure of equipment, thus to tap water provide a stable water source, be that household wetting system uses and pacifies
The steps necessary of dress.However, municipal water pressure is not both generally existing phenomenon, by stable-pressure device, hydraulic pressure is adjusted to close
It is appliance water, the preceding topic condition that wetting system is promoted in the range of reason.
Based on the above reasons, hydraulic pressure is adjusted in the monitoring by controller to each high-low pressure, booster water pump, storage pressure member
Part --- the size of pressure stabilizing bucket pressure is to provide the key of pressure.
Summary of the invention
The present invention provides one aiming at the problem that difference of municipal water pressure in the prior art is affected to water purifier equipment
Kind stabilized voltage device and its pressure-stabilizing water supply method.
In order to solve the above-mentioned technical problem, the present invention is addressed by following technical proposals:
A kind of stabilized voltage device, is respectively the water pipe of inlet and outlet including both ends, on water pipe from water pipe into
The mouth of a river is successively arranged low-pressure protective valve, booster pump and the first high voltage protective valve and pressure stabilizing bucket to water outlet, further includes protecting with low pressure
The controller that shield valve, booster pump and the first high voltage protective valve are all connected with;Low-pressure protective valve, the first high voltage protective valve are used to incude
Real-time hydraulic pressure and the hydraulic signal sensed is sent to controller in water pipe, controller is distinguished according to the hydraulic signal received
With low-pressure protective valve preset in controller, the first high voltage protective valve nominal value compared with and by comparing result control booster pump
Work.
The real-time hydraulic pressure of water pipe is incuded by two pressure protection valves, and opening for booster pump is set according to real-time hydraulic pressure
It closes, to reach the adjusting to water inner pipe water pressure, the hydraulic pressure of the water flowed into pressure stabilizing bucket is maintained at the mark of low-pressure protective valve
Pressure stabilizing value between title value and the nominal value of the first high voltage protective valve, so that hydraulic pressure in pressure stabilizing bucket, that is, not too high cause
Equipment damage or personnel safety threaten, and equipment too low will not be caused to dally and reduce service life of equipment.
Preferably, pressure stabilizing bucket is two, two pressure stabilizing buckets are adjacent and are connected in parallel on water pipe.According to the matter to water source
Amount and with the difference of water environment, can be set multiple pressure stabilizing buckets, is more fully absorbed to the fluctuation of hydraulic pressure.
Preferably, the water outlet of water pipe is equipped with the second high voltage protective valve connected to the controller, the second high voltage protective
Valve is also used in induction water pipe hydraulic pressure in real time and the hydraulic signal sensed is sent to controller, preset second in controller
The nominal value of high voltage protective valve is greater than the nominal value of the first high voltage protective valve.By the water outlet in water pipe, the second high pressure is set
Protect valve, prevent from when the first high voltage protective defective valve can not sending hydraulic pressure caused by hydraulic signal to controller persistently rise and
Caused security risk, so that even if when the first high voltage protective defective valve, when pressure stabilizing inner bucket water pressure reaches certain value, controller
Also booster pump closing can be controlled under the action of the second high voltage protective valve, while the second high voltage protective valve can open carry out pressure release.
Preferably, being equipped with check valve between booster pump and the first high voltage protective valve.
Preferably, the structure of low-pressure protective valve, the first high voltage protective valve and the second low-pressure protective valve is identical, include
Valve body, valve body bottom end are equipped with the water inlet connecting with water pipe, and body wall is equipped with pressure relief opening;Valve core rod is fixed in valve body,
The valve seat for being arranged with spring on valve core rod and sliding up and down along valve core rod, spring bottom end are resisted against on valve seat, and valve seat is in water inlet
Valve body pressure release when being moved at pressure relief opening under the action of hydraulic pressure.Under the action of water pipe hydraulic pressure, water inlet of the water flow from valve body bottom end
Mouthful enter, when hydraulic pressure reaches certain value, spring force can be overcome to jack up valve seat, when valve seat by top at pressure relief opening when, then into
The mouth of a river is connected with pressure relief opening, realizes the function of carrying out pressure release to water pipe from pressure relief opening, has fully ensured that the safety of whole device
Energy.Valve body is equipped with for detecting water pipe hydraulic signal and draws for sending hydraulic signal to two signals of controller simultaneously
Line sufficiently realizes that the signal between pressure protection valve and controller transmits.
A kind of pressure-stabilizing water supply method, municipal water enter water pipe, low-pressure protective valve, the first high voltage protective from water pipe water inlet
Valve and the second high voltage protective valve detect water pipe hydraulic pressure and the hydraulic signal that will test and are sent to controller, and controller will
The hydraulic signal received respectively with preset low-pressure protective valve nominal value, the first high voltage protective valve nominal value are corresponded in controller
And second high voltage protective valve nominal value compare, when being less than low-pressure protective valve nominal value, booster pump does not start, and entire pressure stabilizing supplies
Water installations do not work;
When being greater than low-pressure protective valve nominal value, low pressure valve is opened, and is pressurized pump startup;Under the premise of herein, when greater than first
When high voltage protective valve nominal value, booster pump is closed, and entire stabilized voltage device does not work;
When less than the first high voltage protective valve nominal value, booster pump is continued starting;Under the premise of herein, with pressure stabilizing bucket internal pressure
Power increases, and the pressure of the first high voltage protective valve detection is continuously increased, and when being greater than the first high voltage protective valve nominal value, first is high
Pressure protection valve is opened, and booster pump is closed, and check valve locks water (flow) direction;If when the first high voltage protective defective valve, the second high pressure is protected
The pressure of shield valve detection is still being continuously increased, and when being greater than the second high voltage protective valve nominal value, the second high voltage protective valve is opened,
Booster pump is closed.
Preferably, can be let out by the pressure relief opening on valve body when the first high voltage protective valve, the second high voltage protective valve are opened
Pressure.
Preferably, when the hydraulic signal of low-pressure protective valve detection is greater than low-pressure protective valve nominal value and less than the first high pressure
When protecting valve nominal value, with the unlatching of booster pump, water inner pipe water pressure rises, until the hydraulic pressure that the first high voltage protective valve detects
When signal is greater than the 80%-90% of the first high voltage protective valve nominal value, booster pump is closed.Required reasonable voltage stabilized range can basis
Actual needs setting, i.e., different nominal values is set in controller can be realized.
Preferably, the nominal value of preset second high voltage protective valve is beyond the nominal of the first high voltage protective valve in controller
The 20% of value, effectively prevent pressure stabilizing inner bucket water press through it is high and caused by security risk.
The present invention is due to using above technical scheme, with significant technical effect:
The present invention is adjusted by two cooperations between pressure protection valve and booster pump, so that needed for the hydraulic pressure of water is maintained at
In voltage stabilized range, causes equipment damage or personnel safety to threaten so that guarantee is i.e. not too high, equipment too low will not be caused empty
Then reduce service life of equipment.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the embodiment of the present invention 1.
Fig. 2 is the flow chart of the embodiment of the present invention 1.
Fig. 3 is the structural schematic diagram of pressure protection valve in Fig. 1.
The toponym that each number designation is referred in attached drawing is as follows: 1-water inlet, 2-water outlets, 3-low-voltage variations
Valve, 4-booster pumps, the 5-the first high voltage protective valve, 6-controllers, 7-pressure stabilizing buckets, the 8-the second high voltage protective valve, 9-are unidirectionally
Valve, 101-valve bodies, 102-pressure relief openings, 103-valve core rods, 104-springs, 105-valve seats, 106-signal leads.
Specific embodiment
Present invention is further described in detail with embodiment with reference to the accompanying drawing.
Embodiment 1
A kind of stabilized voltage device is respectively as shown in Figure 1-Figure 3 the water pipe of water inlet 1 and water outlet 2 including both ends,
Low-pressure protective valve 3, booster pump 4 and the first high voltage protective valve 5 are successively arranged on water pipe from the water inlet of water pipe 1 to water outlet 2, is increased
It is equipped with check valve 9 between press pump 4 and the first high voltage protective valve 5, water (flow) direction is locked by check valve 9, prevents water from flowing back.
It further include the controller 6 being all connected with low-pressure protective valve 3, booster pump 4 and the first high voltage protective valve 5;And water pipe
It is equipped with the second high voltage protective valve 8 connecting with controller 6 at water outlet 2, is also connected with pressure stabilizing bucket 7 on water pipe, pressure stabilizing bucket 7 is located at
Between first high voltage protective valve 5 and water outlet 2, pressure stabilizing bucket 7 is two, and two pressure stabilizing buckets 7 are adjacent and are connected in parallel on water pipe.
Low-pressure protective valve 3, the first high voltage protective valve 5, the second high voltage protective valve 8 be used to induction water pipe in real time hydraulic pressure simultaneously
The hydraulic signal sensed is sent to controller 6, and low-pressure protective valve 3, the first high voltage protective valve 5, the second high voltage protective valve 8
Be arranged on water pipe, thus three simultaneously be sent to controller 6 hydraulic signal it is substantially equal, due in controller 6 preset
There are 8 nominal value of 3 nominal value of low-pressure protective valve, 5 nominal value of the first high voltage protective valve and the second high voltage protective valve, therefore controller
6 mark with 3 nominal value of low-pressure protective valve preset in controller 6, the first high voltage protective valve 5 respectively according to the hydraulic signal received
Title value and 8 nominal value of the second high voltage protective valve compare and work by comparing result control booster pump 4, so that after finally adjusting
Hydraulic pressure into the water in pressure stabilizing bucket 7 is maintained between 5 nominal value of 3 nominal value of low-pressure protective valve and the first high voltage protective valve.
The structure of low-pressure protective valve 3, the first high voltage protective valve 5 and the second low-pressure protective valve 3 is identical, includes valve body
101,101 bottom end of valve body is equipped with the water inlet 1 connecting with water pipe, and 101 side wall of valve body is equipped with pressure relief opening 102;It is solid in valve body 101
Surely there is valve core rod 103, the valve seat 105 that spring 104 is arranged on valve core rod 103 and is slided up and down along valve core rod 103, spring 104
Bottom end is resisted against on valve seat 105, and valve body 101 is let out when valve seat 105 is moved at pressure relief opening 102 under the action of 1 hydraulic pressure of water inlet
Pressure.Valve body 101 is equipped with for detecting water pipe hydraulic signal and for sending hydraulic signal to two signals of controller 6 simultaneously
Lead 106 sufficiently realizes that the signal between pressure protection valve and controller 6 transmits.
Since the nominal value of the second high voltage protective valve 8 preset in controller 6 is greater than the nominal of the first high voltage protective valve 5
Value, thus only the first high voltage protective valve 5 fail, no longer to controller 6 send hydraulic signal so that even if siphon pressure
When being reached the first high voltage protective 5 nominal value of valve, controller 6 will not still control booster pump 4 closing, then as water pipe hydraulic pressure into
One step improves, and when being increased to the second high voltage protective 8 nominal value of valve, controller 6 can just control booster pump 4 and close, while the
Two high voltage protective valves 8 are opened, and are carried out pressure release to water pipe, are reached duplicate protection.
The pressure-stabilizing water supply method of the stabilized voltage device in the present embodiment specifically: municipal water from water pipe water inlet 1 into
Water inlet pipe, low-pressure protective valve 3, the first high voltage protective valve 5 and the second high voltage protective valve 8 detect water pipe hydraulic pressure and will test
Hydraulic signal and be sent to controller 6, controller 6 by the hydraulic signal received respectively with corresponded in controller 6 it is preset
3 nominal value of low-pressure protective valve, 5 nominal value of the first high voltage protective valve and 8 nominal value of the second high voltage protective valve compare, and exist as follows
Several situations:
When the hydraulic signal that low-pressure protective valve 3 detects is less than 3 nominal value of low-pressure protective valve, low-pressure protective valve 3 is closed,
Booster pump 4 does not start, and entire stabilized voltage device does not work;When the hydraulic signal that low-pressure protective valve 3 detects is protected greater than low pressure
When protecting 3 nominal value of valve, low pressure valve is opened, and booster pump 4 starts.
When the hydraulic signal that low-pressure protective valve 3 detects is greater than 3 nominal value of low-pressure protective valve, low pressure valve is opened, pressurization
Under the premise of 4 starting of pump, when the hydraulic signal that the first high voltage protective valve 5 detects is greater than the first high voltage protective 5 nominal value of valve,
Booster pump 4 is closed, and entire stabilized voltage device does not work;When the hydraulic signal that the first high voltage protective valve 5 detects is less than first
When high voltage protective 5 nominal value of valve, booster pump 4 is continued starting.
When the hydraulic signal that the first high voltage protective valve 5 detects is less than the first high voltage protective 5 nominal value of valve, booster pump 4
Under the premise of continuing starting, with pressure rise in pressure stabilizing bucket 7, the pressure of the first high voltage protective valve 5 detection is continuously increased, until
When greater than the first high voltage protective 5 nominal value of valve, the first high voltage protective valve 5 is opened, and booster pump 4 is closed, and check valve 9 locks water flow side
To, while the first high voltage protective valve 5 passes through 102 pressure release of pressure relief opening on its valve body 101.
If the first high voltage protective valve 5 fails, the pressure of the second high voltage protective valve 8 detection is still being continuously increased, Zhi Dao great
When the second high voltage protective 8 nominal value of valve, the second high voltage protective valve 8 is opened, and booster pump 4 is closed, while the second high voltage protective valve 8
Pass through 102 pressure release of pressure relief opening on its valve body 101.
The present embodiment mesolow protects the low-voltage variation nominal value 10PSi of valve 3, the high voltage protective nominal value of high voltage protective valve
60PSi, provided stable hydraulic pressure are 55~60PSi;The nominal value of preset second high voltage protective valve 8 is super in controller 6
The 20% of the nominal value of first high voltage protective valve 5 out, therefore when booster pump 4 provides 60PSi nominal pressure, super-pressure protection valve exists
When 72PSi pressure, automatically open.
Embodiment 2
With embodiment 1, the difference is that when the hydraulic signal that low-pressure protective valve 3 detects is protected greater than low pressure in the present embodiment
Protect 3 nominal value of valve and when less than the first high voltage protective 5 nominal value of valve, with the unlatching of booster pump 4, water inner pipe water pressure rises, when
When the hydraulic signal that first high voltage protective valve 5 detects is greater than the 80% of 5 nominal value of the first high voltage protective valve, booster pump 4 is closed.
Embodiment 3
With embodiment 1, the difference is that when the hydraulic signal that low-pressure protective valve 3 detects is protected greater than low pressure in the present embodiment
Protect 3 nominal value of valve and when less than the first high voltage protective 5 nominal value of valve, with the unlatching of booster pump 4, water inner pipe water pressure rises, when
When the hydraulic signal that first high voltage protective valve 5 detects is greater than the 90% of 5 nominal value of the first high voltage protective valve, booster pump 4 is closed.
In short, the foregoing is merely presently preferred embodiments of the present invention, it is all according to equalization made by scope of the present invention patent
Variation and modification, shall all be covered by the patent of the invention.
Claims (7)
1. a kind of stabilized voltage device is respectively the water pipe of water inlet (1) and water outlet (2) including both ends, it is characterised in that: water
Low-pressure protective valve (3), booster pump (4), the first high voltage protective are successively arranged on pipe from the water inlet of water pipe (1) to water outlet (2)
Valve (5) and pressure stabilizing bucket (7) further include the control being all connected with low-pressure protective valve (3), booster pump (4) and the first high voltage protective valve (5)
Device (6) processed;Low-pressure protective valve (3), the first high voltage protective valve (5) are used in induction water pipe hydraulic pressure and the water that will be sensed in real time
Pressure signal is sent to controller (6), controller (6) according to the hydraulic signal that receives respectively with it is preset low in controller (6)
Pressure protects valve (3), the nominal value of the first high voltage protective valve (5) compares and controls booster pump (4) work by comparing result;Water pipe
Water outlet (2) at be equipped with the second high voltage protective valve (8) for connecting with controller (6), the second high voltage protective valve (8) is also used for feeling
It answers real-time hydraulic pressure in water pipe and is sent to the hydraulic signal sensed controller (6), preset second high pressure in controller (6)
The nominal value of valve (8) is protected to be greater than the nominal value of the first high voltage protective valve (5);Low-pressure protective valve (3), the first high voltage protective valve
(5) and the structure of the second low-pressure protective valve (3) is identical, includes valve body (101), and valve body (101) bottom end is equipped with to be connected with water pipe
The water inlet (1) connect, valve body (101) side wall are equipped with pressure relief opening (102);Valve core rod (103), valve are fixed in valve body (101)
The valve seat (105) for being arranged with spring (104) on core bar (103) and sliding up and down along valve core rod (103), spring (104) bottom end are supported
It leans against on valve seat (105), valve body when valve seat (105) is moved at pressure relief opening (102) under the action of water inlet (1) hydraulic pressure
(101) pressure release.
2. a kind of stabilized voltage device according to claim 1, it is characterised in that: pressure stabilizing bucket (7) is two, two pressure stabilizings
Bucket (7) is adjacent and is connected in parallel on water pipe.
3. a kind of stabilized voltage device according to claim 1, it is characterised in that: booster pump (4) and the first high voltage protective
Check valve (9) are equipped between valve (5).
4. a kind of pressure-stabilizing water supply method based on stabilized voltage device as claimed in claim 3, it is characterised in that: municipal water is from water
Enter water pipe at water inlet tube mouth (1), low-pressure protective valve (3), the first high voltage protective valve (5) and the second high voltage protective valve (8) are equal
Detection water pipe hydraulic pressure and the hydraulic signal that will test simultaneously are sent to controller (6), the hydraulic signal that controller (6) will receive
Respectively with preset low-pressure protective valve (3) nominal value, the first high voltage protective valve (5) nominal value and are corresponded in controller (6)
Two high voltage protective valve (8) nominal values compare, and when being less than low-pressure protective valve (3) nominal value, booster pump (4) does not start, entire steady
Pressure water supply device does not work;
When being greater than low-pressure protective valve (3) nominal value, low pressure valve is opened, booster pump (4) starting;Under the premise of herein, when being greater than the
When one high voltage protective valve (5) nominal value, booster pump (4) is closed, and entire stabilized voltage device does not work;
When less than first high voltage protective valve (5) nominal value, booster pump (4) is continued starting;Under the premise of herein, with pressure stabilizing bucket
(7) pressure of interior pressure rise, the detection of the first high voltage protective valve (5) is continuously increased, and is marked until being greater than the first high voltage protective valve (5)
When title value, the first high voltage protective valve (5) is opened, and booster pump (4) is closed, and check valve (9) locks water (flow) direction;If the first high pressure is protected
When protecting valve (5) failure, the pressure of the second high voltage protective valve (8) detection is still being continuously increased, until being greater than the second high voltage protective valve
(8) when nominal value, the second high voltage protective valve (8) is opened, and booster pump (4) is closed.
5. pressure-stabilizing water supply method according to claim 4, it is characterised in that: the first high voltage protective valve (5), the second high pressure are protected
When protecting valve (8) opening, it can pass through pressure relief opening (102) pressure release on valve body (101).
6. pressure-stabilizing water supply method according to claim 4, it is characterised in that: when the hydraulic pressure letter of low-pressure protective valve (3) detection
Number it is greater than low-pressure protective valve (3) nominal value and when less than first high voltage protective valve (5) nominal value, with the unlatching of booster pump (4),
Water inner pipe water pressure rises, until the hydraulic signal that the first high voltage protective valve (5) detects is greater than the first high voltage protective valve (5) nominally
When the 80%-90% of value, booster pump (4) is closed.
7. pressure-stabilizing water supply method according to claim 4, it is characterised in that: preset second high pressure is protected in controller (6)
The nominal value of valve (8) is protected beyond the 20% of the nominal value of the first high voltage protective valve (5).
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CN112058754B (en) * | 2020-08-24 | 2022-04-08 | 阳光新能源开发股份有限公司 | Water cleaning system and control method thereof |
CN112486227A (en) * | 2020-10-28 | 2021-03-12 | 中广核(乌兰察布)风力发电有限公司 | Control system and method for automatic control of pressure of cooling water system |
CN117999130A (en) * | 2021-09-30 | 2024-05-07 | 添可智能科技有限公司 | Cleaning device and pump structure |
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CN201116372Y (en) * | 2007-08-29 | 2008-09-17 | 上海连成(集团)有限公司 | Frequency conversion constant pressure water supply equipment |
CN201288358Y (en) * | 2008-10-29 | 2009-08-12 | 张明亮 | Waterproof hammer non negative-pressure feed water equipment |
CN202208949U (en) * | 2011-09-26 | 2012-05-02 | 李庆源 | Low-consumption direct water supply equipment |
CN202595794U (en) * | 2012-05-28 | 2012-12-12 | 中国石油天然气股份有限公司 | Well group closed pressure-superposed water supply system |
CN204715468U (en) * | 2015-06-12 | 2015-10-21 | 上海海澄给水设备有限公司 | A kind of Intelligent silent constant pressure water supply equipment |
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