CN110847280A - Absolute pressure secondary water supply equipment - Google Patents

Absolute pressure secondary water supply equipment Download PDF

Info

Publication number
CN110847280A
CN110847280A CN201911180217.4A CN201911180217A CN110847280A CN 110847280 A CN110847280 A CN 110847280A CN 201911180217 A CN201911180217 A CN 201911180217A CN 110847280 A CN110847280 A CN 110847280A
Authority
CN
China
Prior art keywords
water
valve
water supply
fixedly connected
centrifugal pump
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.)
Pending
Application number
CN201911180217.4A
Other languages
Chinese (zh)
Inventor
高锐
张�林
程志伟
郑小婧
王艳
董轩男
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Taiyuan Fenhe Water Supply Equipment Co Ltd
Original Assignee
Taiyuan Fenhe Water Supply Equipment Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Taiyuan Fenhe Water Supply Equipment Co Ltd filed Critical Taiyuan Fenhe Water Supply Equipment Co Ltd
Priority to CN201911180217.4A priority Critical patent/CN110847280A/en
Publication of CN110847280A publication Critical patent/CN110847280A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • EFIXED CONSTRUCTIONS
    • E03WATER SUPPLY; SEWERAGE
    • E03BINSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
    • E03B1/00Methods or layout of installations for water supply
    • EFIXED CONSTRUCTIONS
    • E03WATER SUPPLY; SEWERAGE
    • E03BINSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
    • E03B11/00Arrangements or adaptations of tanks for water supply
    • EFIXED CONSTRUCTIONS
    • E03WATER SUPPLY; SEWERAGE
    • E03BINSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
    • E03B7/00Water main or service pipe systems
    • E03B7/07Arrangement of devices, e.g. filters, flow controls, measuring devices, siphons, valves, in the pipe systems
    • EFIXED CONSTRUCTIONS
    • E03WATER SUPPLY; SEWERAGE
    • E03BINSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
    • E03B7/00Water main or service pipe systems
    • E03B7/07Arrangement of devices, e.g. filters, flow controls, measuring devices, siphons, valves, in the pipe systems
    • E03B7/075Arrangement of devices for control of pressure or flow rate

Abstract

The invention is suitable for the technical field of water supply equipment, and provides absolute pressure secondary water supply equipment, which comprises a water source assembly, a secondary water supply assembly and a vacuumizing assembly; through setting up level sensor, vacuum pump and vertical centrifugal pump, make level sensor can real-time detection vacuum drainage irritate the water level height of inner chamber, when level sensor detects vacuum drainage irritate interior water level and is located the low limit value, the vacuum pump starts, irritate and the interior air of pipeline is taken out to the vacuum drainage, thereby inhale the inner chamber that the vacuum drainage irritated with the water of concrete pond inner chamber through the water pipe, when level sensor detects vacuum drainage irritate interior water level and is in the high limit value, the vacuum pump stop work, then vertical centrifugal pump starts work, traditional secondary water supply is mostly used multi-stage vertical centrifugal pump has been avoided, need to pass through the form of water gravity flow, enter into the pump body with the water source, and the water supply pond is below the ground level, the pump package is installed above the ground level, be difficult to satisfy the problem of former water.

Description

Absolute pressure secondary water supply equipment
Technical Field
The invention belongs to the technical field of water supply equipment, and particularly relates to absolute pressure secondary water supply equipment.
Background
The secondary water supply is a form that a unit or an individual stores and pressurizes urban public water supply or self-built facility water supply, and supplies water to users or self-use through a pipeline. The secondary water supply is mainly established for compensating the pressure shortage of the municipal water supply pipeline and ensuring the water consumption of dwellings and livelihoods in high-rise people. Whether the secondary water supply facility is built, designed and constructed according to the regulations or not is directly related to the quality of secondary water supply, water pressure and water supply safety, and is closely related to the normal and stable life of people. Compared with the water supply of raw water, the water quality of secondary water supply is more easily polluted.
The traditional secondary water supply multipurpose multistage vertical centrifugal pump needs to enter a water source into a pump body in a water self-flowing mode, a water supply pool is below the ground level, and a pump set is installed above the ground level, so that the self-filling condition of an original water supply unit is difficult to satisfy.
Disclosure of Invention
The invention provides absolute pressure secondary water supply equipment, and aims to solve the problem that a traditional multi-purpose multi-stage vertical centrifugal pump for secondary water supply needs to feed a water source into a pump body in a water self-flowing mode, a water supply pool is below the ground level, and a pump group is arranged above the ground level, so that the self-filling condition of an original water supply unit is difficult to meet.
The invention is realized in such a way that the absolute pressure secondary water supply equipment comprises a water source assembly, a secondary water supply assembly and a vacuumizing assembly, wherein the water source assembly comprises a concrete water pool and a water pipe, the water pipe is fixedly connected with the concrete water pool, and the water pipe penetrates through the concrete water pool and extends to an inner cavity of the concrete water pool;
the secondary water supply component comprises a vacuum drainage tank, a second valve, a vertical centrifugal pump, an air pressure tank, a water outlet pipe and a water level sensor, the input end of the vacuum drainage tank is communicated with the water pipe, the second valve is fixedly connected with the vacuum drainage tank, the second valve is positioned at the output end of the vacuum drainage tank, the vertical centrifugal pump is fixedly connected with the second valve, the vertical centrifugal pump is positioned at one end of the second valve far away from the vacuum drainage tank, the air pressure tank is fixedly connected with the vertical centrifugal pump, the air pressure tank is positioned on one side of the vertical centrifugal pump away from the second valve, the water outlet pipe is fixedly connected with the air pressure tank, the water outlet pipe is positioned at one end of the air pressure tank far away from the vertical centrifugal pump, the water level sensor is fixedly connected with the vacuum drainage tank, and the water level sensor is positioned in an inner cavity of the water level sensor;
preferably, the vacuumizing assembly comprises a third valve, a steam-water separator, a vacuum pump and an exhaust pipe, the third valve is fixedly connected with the vacuum drainage tank, the third valve is communicated with the vacuum drainage tank, the steam-water separator is fixedly connected with the third valve, the third valve is far away from one end of the vacuum drainage tank, the vacuum pump is fixedly connected with the steam-water separator, the vacuum pump is located at the output end of the steam-water separator, the exhaust pipe is fixedly connected with the vacuum pump, and the exhaust pipe is located at the output end of the vacuum pump.
Preferably, the water source assembly further comprises a filter, the filter is fixedly connected with the water pipe, and the filter is connected in series with the water pipe.
Preferably, the water source subassembly still includes level sensor, level sensor with concrete pond fixed connection, just level sensor is located the inner chamber in concrete pond.
Preferably, the water source assembly further comprises a first valve, the first valve is fixedly connected with the water pipe and the liquid level sensor, and the first valve is connected in series between the water pipe and the liquid level sensor.
Preferably, the secondary water supply assembly further comprises a check valve, the check valve is fixedly connected with the vertical centrifugal pump and the water outlet pipe, and the check valve is located between the vertical centrifugal pump and the water outlet pipe;
the secondary water supply assembly further comprises a water pressure sensor, the water pressure sensor is fixedly connected with the vertical centrifugal pump, and the water pressure sensor is located at one end, far away from the second valve, of the vertical centrifugal pump.
Preferably, the secondary water supply assembly further comprises a third valve fixedly connected to the check valve and the water pressure sensor, and the third valve is located between the check valve and the water pressure sensor.
Preferably, the secondary water supply assembly further comprises a flow sensor, the flow sensor is fixedly connected with the water pressure sensor and the water outlet pipe, and the flow sensor is located between the water pressure sensor and the water outlet pipe.
Preferably, the water source assembly further comprises a controller, and the controller is electrically connected with the vacuum pump, the vertical centrifugal pump and the water level sensor.
Compared with the prior art, the invention has the beneficial effects that: the invention relates to absolute pressure secondary water supply equipment, which is provided with a water level sensor, a vacuum pump and a vertical centrifugal pump, wherein the water level sensor can detect the water level height of an inner cavity of a vacuum drainage tank in real time, when the water level sensor detects that the water level in the vacuum drainage tank is at a low limit value, the vacuum pump is started to pump out air in the vacuum drainage tank and a pipeline, so that the vacuum drainage tank, namely the pipeline is in a negative pressure state, water in the inner cavity of a concrete pool is sucked into the inner cavity of the vacuum drainage tank through a water pipe, when the water level sensor detects that the water level in the vacuum drainage tank is at a high limit value, the vacuum pump stops working, then the vertical centrifugal pump is started to work, so that the water is pressurized again, the water is supplied by using the multistage vertical centrifugal pump under a water source and the equipment is still at the top, and the absolute pressure, the problem that the conventional secondary water supply multipurpose multistage vertical centrifugal pump needs to enter a water source into a pump body in a water self-flowing mode, a water supply pool is below the ground level, and a pump set is installed above the ground level and cannot meet the self-filling condition of an original water supply unit is solved.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the structure of the secondary water supply assembly of the present invention;
fig. 3 is a schematic block diagram of the present invention.
In the figure: 1-a water source component, 11-a concrete pool, 12-a liquid level sensor, 13-a water pipe, 14-a filter, 15-a first valve, 2-a secondary water supply component, 21-a vacuum drainage tank, 22-a second valve, 23-a vertical centrifugal pump, 24-a check valve, 25-a third valve, 26-a water pressure sensor, 27-an air pressure tank, 28-a water outlet pipe, 29-a flow sensor, 210-a water level sensor, 211-a controller, 3-a vacuum pumping component, 31-a third valve, 32-a steam-water separator, 33-a vacuum pump and 34-an exhaust pipe.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1-3, the present invention provides a technical solution: an absolute pressure secondary water supply device comprises a water source assembly 1, a secondary water supply assembly 2 and a vacuumizing assembly 3, wherein the water source assembly 1 comprises a concrete water tank 11 and a water pipe 13, the water pipe 13 is fixedly connected with the concrete water tank 11, and the water pipe 13 penetrates through the concrete water tank 11 and extends to an inner cavity of the concrete water tank 11;
the secondary water supply component 2 comprises a vacuum drainage tank 21, a second valve 22, a vertical centrifugal pump 23, an air pressure tank 27, a water outlet pipe 28 and a water level sensor 210, wherein the input end of the vacuum drainage tank 21 is communicated with the water pipe 13, the second valve 22 is fixedly connected with the vacuum drainage tank 21, and the second valve 22 is positioned at the output end of the vacuum drainage tank 21, the vertical centrifugal pump 23 is fixedly connected with the second valve 22, the vertical centrifugal pump 23 is positioned at one end of the second valve 22 far away from the vacuum drainage tank 21, the air pressure tank 27 is fixedly connected with the vertical centrifugal pump 23, the air pressure tank 27 is positioned at one side of the vertical centrifugal pump 23 far away from the second valve 22, the water outlet pipe 28 is fixedly connected with the air pressure tank 27, the water outlet pipe 28 is positioned at one end of the air pressure tank 27 far away from the vertical centrifugal pump 23, the water level sensor 210 is fixedly connected with the vacuum drainage tank 21, and the water level sensor 210 is positioned in the inner cavity of the water level sensor 210;
the vacuumizing assembly 3 comprises a third valve 31, a steam-water separator 32, a vacuum pump 33 and an exhaust pipe 34, the third valve 31 is fixedly connected with the vacuum drainage tank 21, the third valve 31 is communicated with the vacuum drainage tank 21, the steam-water separator 32 is fixedly connected with the third valve 31, the third valve 31 is far away from one end of the vacuum drainage tank 21, the vacuum pump 33 is fixedly connected with the steam-water separator 32, the vacuum pump 33 is located at the output end of the steam-water separator 32, the exhaust pipe 34 is fixedly connected with the vacuum pump 33, and the exhaust pipe 34 is located at the output end of the vacuum pump 33.
In this embodiment, the water level sensor 210, the vacuum pump 33 and the vertical centrifugal pump 23 are provided, so that the water level sensor 210 can detect the water level of the inner cavity of the vacuum drainage tank 21 in real time, when the water level sensor 210 detects that the water level in the vacuum drainage tank 21 is at the low limit value, the vacuum pump 33 is started to start pumping out the air in the vacuum drainage tank 21 and the pipeline, so that the vacuum drainage tank 21, i.e. the pipeline, is in a negative pressure state, so that the water in the inner cavity of the concrete pool 11 is sucked into the inner cavity of the vacuum drainage tank 21 through the water pipe 13, when the water level sensor 210 detects that the water level in the vacuum drainage tank 21 is at the high limit value, the vacuum pump 33 stops working, and then the vertical centrifugal pump 23 starts working, so that the water is pressurized again, and the water supply of the multi-stage vertical centrifugal pump is realized when the water source is below and the equipment, The multi-pump combined use has the advantages of avoiding the problem that the traditional secondary water supply large multi-purpose multi-stage vertical centrifugal pump needs to enter a water source into the pump body in a water self-flowing mode, the water supply pool is below the ground level, and the pump group is installed above the ground level and is difficult to meet the self-filling condition of the original water supply unit.
Further, the water source assembly 1 further comprises a filter 14, the filter 14 is fixedly connected with the water pipe 13, and the filter 14 is connected in series with the water pipe 13.
In this embodiment, the filter 14 is provided to filter the water flowing through the inner cavity of the water pipe 13, thereby preventing impurities from being discharged into the secondary water supply equipment.
Further, the water source assembly 1 further comprises a first valve 15, the first valve 15 is fixedly connected with the water pipe 13 and the liquid level sensor 12, and the first valve 15 is connected in series between the water pipe 13 and the liquid level sensor 12.
In this embodiment, the first valve 15 is provided to control the communication between the water pipe 13 and the vacuum drainage tank 21, so as to close the secondary water supply device.
Further, the water source assembly 1 further comprises a liquid level sensor 12, the liquid level sensor 12 is fixedly connected with the concrete water pool 11, and the liquid level sensor 12 is located in an inner cavity of the concrete water pool 11.
In this embodiment, the liquid level sensor 12 can be used to detect the water level of the inner cavity of the concrete water tank 11 in real time, and then determine the water storage capacity in the concrete water tank 11.
Further, the secondary water supply assembly 2 further comprises a check valve 24, the check valve 24 is fixedly connected with the vertical centrifugal pump 23 and the water outlet pipe 28, and the check valve 24 is positioned between the vertical centrifugal pump 23 and the water outlet pipe 28;
the secondary water supply assembly 2 further comprises a water pressure sensor 26, the water pressure sensor 26 is fixedly connected with the vertical centrifugal pump 23, and the water pressure sensor 26 is located at one end of the vertical centrifugal pump 23 far away from the second valve 22.
In the present embodiment, by providing the check valve 24 between the vertical centrifugal pump 23 and the water outlet pipe 28, the water supply can be effectively prevented from flowing back, which causes an increase in pressure in the vacuum drainage tank 21; by providing the water pressure sensor 26, it is possible to detect the amount of water pressure supplied.
Further, the secondary water supply assembly 2 further comprises a third valve 25, the third valve 25 is fixedly connected with the check valve 24 and the water pressure sensor 26, and the third valve 25 is located between the check valve 24 and the water pressure sensor 26.
In the present embodiment, the third valve 25 is provided between the check valve 24 and the water pressure sensor 26, so that the opening and closing of the third valve 25 can control the amount of water of the secondary water supply.
Further, the secondary water supply assembly 2 further comprises a flow sensor 29, the flow sensor 29 is fixedly connected with the water pressure sensor 26 and the water outlet pipe 28, and the flow sensor 29 is located between the water pressure sensor 26 and the water outlet pipe 28.
In the present embodiment, the flow sensor 29 is provided between the water pressure sensor 26 and the water outlet pipe 28, so that the flow sensor 29 can be used to detect the magnitude of the water supply amount of the secondary water supply.
Further, the water source assembly 1 further comprises a controller 211, and the controller 211 is electrically connected to the vacuum pump 33, the vertical centrifugal pump 23 and the water level sensor 210.
In the embodiment, by arranging the controller 211 and connecting the controller 211 with the vacuum pump 33, the vertical centrifugal pump 23 and the water level sensor 210, the controller 211 can control the vertical centrifugal pump 23 and the vacuum pump 33 to start up according to the water level of the vacuum drainage tank 21 detected by the water level sensor 210, thereby realizing automatic secondary water supply.
The working principle and the using process of the invention are as follows: after the water supply system is installed, the water outlet pipe 28 is connected with a water supply pipe network, the water level sensor 210 can detect the water level height of the inner cavity of the vacuum drainage tank 21 in real time and transmit the water level height to the controller 211, when the water level sensor 210 detects that the water level in the vacuum drainage tank 21 is at a low limit value, the controller 211 controls the vacuum pump 33 to be started, so that air in the vacuum drainage tank 21 and air in a pipeline are pumped out, the vacuum drainage tank 21, namely the pipeline, is in a negative pressure state, so that water in the inner cavity of the concrete pool 11 is sucked into the inner cavity of the vacuum drainage tank 21 through the water pipe 13, when the water level sensor 210 detects that the water level in the vacuum drainage tank 21 is at a high limit value, the controller 211 controls the vacuum pump 33 to stop working, then the controller 211 controls the vertical centrifugal pump 23 to be started, so that the water.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims (9)

1. The utility model provides an absolute pressure secondary water supply equipment which characterized in that: the water source assembly (1) comprises a concrete pool (11) and a water pipe (13), the water pipe (13) is fixedly connected with the concrete pool (11), and the water pipe (13) penetrates through the concrete pool (11) and extends to an inner cavity of the concrete pool (11);
the secondary water supply assembly (2) comprises a vacuum drainage tank (21), a second valve (22), a vertical centrifugal pump (23), an air pressure tank (27), a water outlet pipe (28) and a water level sensor (210), the input end of the vacuum drainage tank (21) is communicated with the water pipe (13), the second valve (22) is fixedly connected with the vacuum drainage tank (21), the second valve (22) is located at the output end of the vacuum drainage tank (21), the vertical centrifugal pump (23) is fixedly connected with the second valve (22), the vertical centrifugal pump (23) is located at one end, away from the vacuum drainage tank (21), of the second valve (22), the air pressure tank (27) is fixedly connected with the vertical centrifugal pump (23), and the air pressure tank (27) is located at one side, away from the second valve (22), of the vertical centrifugal pump (23), the water outlet pipe (28) is fixedly connected with the air pressure tank (27), the water outlet pipe (28) is located at one end, far away from the vertical centrifugal pump (23), of the air pressure tank (27), the water level sensor (210) is fixedly connected with the vacuum drainage tank (21), and the water level sensor (210) is located in an inner cavity of the water level sensor (210).
2. An absolute pressure secondary water supply apparatus as claimed in claim 1, wherein: the vacuumizing assembly (3) comprises a third valve (31), a steam-water separator (32), a vacuum pump (33) and an exhaust pipe (34), the third valve (31) is fixedly connected with the vacuum drainage tank (21), the third valve (31) is communicated with the vacuum drainage tank (21), the steam-water separator (32) is fixedly connected with the third valve (31), the third valve (31) is far away from one end of the vacuum drainage tank (21), the vacuum pump (33) is fixedly connected with the steam-water separator (32), the vacuum pump (33) is located at the output end of the steam-water separator (32), the exhaust pipe (34) is fixedly connected with the vacuum pump (33), and the exhaust pipe (34) is located at the output end of the vacuum pump (33).
3. An absolute pressure secondary water supply apparatus as claimed in claim 1, wherein: the water source assembly (1) further comprises a filter (14), the filter (14) is fixedly connected with the water pipe (13), and the filter (14) is connected to the water pipe (13) in series.
4. An absolute pressure secondary water supply apparatus as claimed in claim 1, wherein: the water source component (1) further comprises a liquid level sensor (12), the liquid level sensor (12) is fixedly connected with the concrete pool (11), and the liquid level sensor (12) is located in an inner cavity of the concrete pool (11).
5. An absolute pressure secondary water supply apparatus as claimed in claim 4, wherein: the water source assembly (1) further comprises a first valve (15), the first valve (15) is fixedly connected with the water pipe (13) and the liquid level sensor (12), and the first valve (15) is connected in series between the water pipe (13) and the liquid level sensor (12).
6. An absolute pressure secondary water supply apparatus as claimed in claim 1, wherein: the secondary water supply assembly (2) further comprises a check valve (24), the check valve (24) is fixedly connected with the vertical centrifugal pump (23) and the water outlet pipe (28), and the check valve (24) is positioned between the vertical centrifugal pump (23) and the water outlet pipe (28);
the secondary water supply assembly (2) further comprises a water pressure sensor (26), the water pressure sensor (26) is fixedly connected with the vertical centrifugal pump (23), and the water pressure sensor (26) is located at one end, far away from the second valve (22), of the vertical centrifugal pump (23).
7. An absolute pressure secondary water supply apparatus as claimed in claim 6, wherein: the secondary water supply assembly (2) further comprises a third valve (25), the third valve (25) is fixedly connected with the check valve (24) and the water pressure sensor (26), and the third valve (25) is located between the check valve (24) and the water pressure sensor (26).
8. An absolute pressure secondary water supply apparatus as claimed in claim 6, wherein: the secondary water supply assembly (2) further comprises a flow sensor (29), the flow sensor (29) is fixedly connected with the water pressure sensor (26) and the water outlet pipe (28), and the flow sensor (29) is located between the water pressure sensor (26) and the water outlet pipe (28).
9. An absolute pressure secondary water supply apparatus as claimed in claim 1, wherein: the water source assembly (1) further comprises a controller (211), and the controller (211) is electrically connected with the vacuum pump (33), the vertical centrifugal pump (23) and the water level sensor (210).
CN201911180217.4A 2019-11-27 2019-11-27 Absolute pressure secondary water supply equipment Pending CN110847280A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201911180217.4A CN110847280A (en) 2019-11-27 2019-11-27 Absolute pressure secondary water supply equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201911180217.4A CN110847280A (en) 2019-11-27 2019-11-27 Absolute pressure secondary water supply equipment

Publications (1)

Publication Number Publication Date
CN110847280A true CN110847280A (en) 2020-02-28

Family

ID=69605157

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201911180217.4A Pending CN110847280A (en) 2019-11-27 2019-11-27 Absolute pressure secondary water supply equipment

Country Status (1)

Country Link
CN (1) CN110847280A (en)

Similar Documents

Publication Publication Date Title
CN201321636Y (en) Integrated intelligent water supply pump station
CN207468381U (en) Small-sized releasing agent retracting device
CN206205056U (en) A kind of non-negative pressure water service system
CN212835624U (en) Absolute pressure secondary water supply equipment
CN203108054U (en) Fire engineering fire unit
CN110847280A (en) Absolute pressure secondary water supply equipment
CN209468814U (en) A kind of multifunctional compensating formula box type negative-pressure-free supply equipment
CN201567620U (en) Pipe network add-pressure water supply equipment with regulating tank and compensatory auxiliary pump
CN206784497U (en) A kind of box type negative-pressure-free supply equipment
CN206928365U (en) A kind of high-efficiency feedwater equipment
CN213682327U (en) Municipal administration water pipe network steady voltage water tank
CN110629831B (en) Control system and control method for water supply by parallel connection of secondary pressurizing pump set and pressure-superposed pump set
CN210342206U (en) Integrated sewage flow-dividing pump station
CN206360028U (en) A kind of small-sized household constant pressure water supply equipment
CN101245605A (en) Non-negative pressure water service system
CN2755191Y (en) Automatic filtering direct water supplier with variable frequency and supplementary pressure
CN2482561Y (en) Non-tank pipe type automatic supplying water equipment
CN2701919Y (en) Automatic supercharging and stabilizing pressure water supply equipment connecting to water pipe network
CN209564538U (en) Fire-fighting water mists pump group
CN215977511U (en) Water tank type pipe network pressure-superposed water supply equipment with cleaning and pressurizing functions
CN215594239U (en) Water supply system
CN210459391U (en) Frequency conversion pressurization water supply equipment of single tank body structure
CN217327866U (en) Air lifting device for sewage
CN203462524U (en) Flow regulator
CN217660251U (en) Integral type dentistry suction unit

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination