CN217950640U - Induction water pump with automatic water supply mode adjustment function - Google Patents

Induction water pump with automatic water supply mode adjustment function Download PDF

Info

Publication number
CN217950640U
CN217950640U CN202222197501.6U CN202222197501U CN217950640U CN 217950640 U CN217950640 U CN 217950640U CN 202222197501 U CN202222197501 U CN 202222197501U CN 217950640 U CN217950640 U CN 217950640U
Authority
CN
China
Prior art keywords
water
pump
water inlet
water pump
pressure
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.)
Active
Application number
CN202222197501.6U
Other languages
Chinese (zh)
Inventor
赵荣富
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.)
Taizhou Chaolong Pump Industry Co ltd
Original Assignee
Taizhou Chaolong Pump Industry 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 Taizhou Chaolong Pump Industry Co ltd filed Critical Taizhou Chaolong Pump Industry Co ltd
Priority to CN202222197501.6U priority Critical patent/CN217950640U/en
Application granted granted Critical
Publication of CN217950640U publication Critical patent/CN217950640U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Abstract

The utility model discloses a water supply mode automatically regulated's response water pump, including pump head and water pump main part, be provided with the water intake pipe and go out the water cavity among the pump head inner chamber, the inlet tube with it sets up to go out the water cavity intercommunication, the output of water pump main part is pegged graft the inlet tube with go out the junction in water cavity, the tip of water intake pipe is provided with the inlet tube, be provided with the mounting hole on the lateral wall of inlet tube, intake pressure sensor with the mounting hole spiro union cooperation, be provided with the outlet pipe on going out the water cavity, be provided with on the lateral wall of outlet pipe the mounting hole to with go out water pressure sensor spiro union cooperation, intake pressure sensor with go out water pressure sensor respectively with the controller signal connection of water pump main part.

Description

Induction water pump with automatic water supply mode adjustment function
Technical Field
The utility model belongs to the technical field of water pump switch and control mode, specifically a water supply mode automatically regulated's response water pump.
Background
Existing water pumps with pressure control or with water flow control are collectively referred to as automatic pumps, hereinafter simply referred to as automatic pumps. The existing automatic pump control methods include the following methods:
A. pressure control: the single pressure control automatic water pump needs to install a check valve or a check valve at the water inlet part of the water pump, the water pump can set starting pressure and service pressure, the pump can be installed at a low position (bottom) to supply water to a high position (high layer) for pressurization, the pipeline pressure can be reduced when a high-level user opens a water tap, the water pump can be automatically started when the starting pressure is reduced to the set starting pressure, the water pump still works when the user closes the water tap, the pipeline pressure can be increased, the water pump can be automatically stopped when the set service pressure is exceeded, the water pump does not need to be closed down stairs, and the use is very convenient.
B. Controlling water flow: the water pump controlled by water flow is singly adopted, the water pump is required to be arranged on a pipeline through which water flows out when a faucet is opened, when a user opens the faucet, the water flows out, and when the water in the pipeline flows, a valve or a rotor is pushed, and an induction element is induced, so that the water pump can be automatically started; when a user closes the faucet, water flow in the pipeline stops flowing, the valve is closed or the rotor stops running, and then the induction is cut off to stop the water pump, so that the water pump does not need to be started or stopped, and the water is very convenient to use.
C. The pressure and water flow dual-mode control mode is characterized in that the pump integrates pressure control and water flow control into a whole, and the pump is more suitable for different occasions.
D. Non-inductive control: namely, the start and stop are controlled by a pressure sensor, a non-water flow control switch and the like. The control mode of the water pump is that the standby mode is utilized to realize control, namely, if the water pump is in a working state, if the water faucet is closed, water does not flow out of a pipeline, then the load of the water pump can be reduced, the power or the current can also be reduced, when the data is reduced to a certain value, the water pump can automatically operate continuously at a lower rotating speed or with a smaller power through the frequency conversion principle to be in the standby pressure maintaining state, when the water faucet is opened, the water flow is increased, the load is also increased, the rotating speed of the water pump is automatically increased through the frequency conversion principle, the power is increased, the water demand is met, and the control is simpler and more convenient.
A. B and C: a. one common disadvantage of the above three control modes is that: the pressure sensor or the inductive switch is designed on the water outlet side of the check valve singly, the pressure sensor or the inductive switch can only sense the pressure change in the water outlet pipeline, and the pressure change in the water inlet pipeline cannot be sensed, so a certain defect exists in many times, for example, when the water inlet pipeline is short of water, the water pump is stopped as the short-of-water protection, a high-rise user opens the water outlet pipeline of the faucet under the condition of not knowing the short of water, the pressure is certainly reduced, when the water pump is reduced to the starting pressure, the water pump is started again, but the water inlet is in the short-of-water state, the water pump is immediately stopped in a protection mode, at the moment, the pipeline of the high-rise user is also in the short-of-water state, no pressure exists in the pipeline, when the water inlet pipeline is supplied, the pressure is not high, the check valve cannot be pushed, because most of the check valves have springs as thrust sealing valves, the check valves have certain pressure, water with certain height generally still exists in the water outlet pipeline, the certain pressure can also be generated, so the check valve cannot be pushed to enter the water outlet pipeline, even if the pressure sensor or the water flow switch installed in the water inlet pipeline cannot sense the water inlet pipeline, the high-level can not be automatically started, the water pump, and the high-level automatic water supply can not be carried out, even if the water supply can not be carried out, the high-level automatic water supply can also, the high-level automatic water supply can not be carried out, the high-level water supply can also, the high-level automatic water supply can be carried out, and the high-level water supply can not be carried out.
b. The control defects of the existing water pump are as follows: when a user opens the water faucet, the water pump automatically starts pressurized water supply, and when the water faucet is closed, the water pump automatically shuts off, and the control mode has the following defects: as long as the user needs to use water, the water pump works, which means that electricity charges are generated.
D. The disadvantage of single non-inductive control:
a. because the water pump is in the standby mode, even if a user does not use water, the water pump can be in a low-speed and low-power state to continuously operate and maintain the pressure, a lot of electricity charges can be consumed in one year, and redundant electricity charge expenses are generated for the user.
b. Since the long-term continuous working condition has an influence on the service life of the motor, especially some elements in the driving plate, such as a capacitor, can attenuate the capacity due to the long-term working, resulting in the performance degradation and thus losing the automatic control function.
c. When the water inlet pipeline lacks water, generally can design the lack of water protect function for preventing dry running, when the water comes after the lack of water protection, because the design of noninductive, can't respond to water, so even water has come, the user just must manually go to open and bring the trouble to the water.
d. In order to avoid manual opening, some products are designed with a function of self-starting after water shortage protection for a certain time, and then the disadvantage of the mode is that: after water is short, the water pump is still in a standby state and is continuously started automatically, so that electric energy is consumed invisibly and the expenditure of electric charge is increased; internal parts can be damaged due to water shortage and dry running; meanwhile, the service life of the water pump is shortened or the control function is lost due to long-time frequent starting; if this function occurs late at night, it may also affect the user's rest due to frequent activation for a long period of time.
SUMMERY OF THE UTILITY MODEL
In order to compensate the defects of the prior art, the utility model provides a water supply mode automatically regulated's induction pump's technical scheme.
A water supply mode automatically regulated's response water pump, including pump head and water pump main part, be provided with water intake pipe and play water cavity in the pump head inner chamber, the inlet tube with go out the water cavity intercommunication and set up, the output of water pump main part is fixed the inlet tube with go out the junction in water cavity, the tip of water intake pipe is provided with the inlet tube, be provided with the mounting hole on the lateral wall of inlet tube, be provided with the check valve in the inner chamber of inlet tube, the check valve is installed the right side (picture A6) of mounting hole, intake pressure sensors with the mounting hole spiro union cooperation, be provided with the outlet pipe on going out the water cavity, be provided with on the lateral wall of outlet pipe the mounting hole to with play water pressure sensors spiro union cooperation.
Furthermore, the water inlet pressure sensor and the water outlet pressure sensor are respectively in signal connection with a controller of the water pump main body.
Further, be provided with the internal thread on the inner wall of inlet tube, be provided with fastening screw in the inlet tube, be provided with the external screw thread on fastening screw's the outer wall, with inlet tube spiro union cooperation in order to incite somebody to action the check valve locking is in the bottom of inlet tube.
Furthermore, the inlet tube with water intake pipe's junction is provided with the stair structure, the installation back the check valve with the cooperation of stair structure butt.
Furthermore, grooves are formed in the upper portion of the fastening screw, and at least two groups of grooves are formed in the grooves.
Furthermore, the outlet pipe is provided with two sets of, including vertical outlet pipe and horizontal outlet pipe, set up respectively on the bottom plate and the lateral wall of pump head.
Furthermore, a water filling hole is formed in the side wall of the pump head, and a plug is arranged in the water filling hole in a threaded mode.
Furthermore, still be provided with the screw on the lateral wall of pump head, the spiro union is provided with temperature sensor in the screw, temperature sensor's response end inserts in going out the water cavity.
Compared with the prior art, the utility model discloses there is following advantage:
the water pump of scheme A:
the pressure sensing devices are respectively arranged at the water inlet pipe and the water outlet pipe, so that the pressure detection of a water inlet pipeline and the pressure detection or the water flow detection of a water outlet pipeline can be realized, the multi-mode control water pump can be controlled, the multi-mode automatic switching can be realized, the application occasion is wider, and the adaptability is stronger.
1. When the water inlet pipeline is in water shortage, a signal can be provided to the controller in time for water shortage protection, and dry running is prevented;
2. when the water inlet pipeline is in short of water and then water comes, a signal can be timely provided for the controller to automatically start, so that automatic pressure maintaining is realized on the water outlet pipeline, the automatic stop can be realized after the pressure maintaining, a user can open a faucet at any position after water comes to realize automatic pressure increasing water supply, manual operation is not needed, and the automatic pressure increasing water supply device is very convenient;
3. whether the water pressure of the water inlet pipeline is larger than the use pressure set by a user or not can be automatically detected. If the detected value is larger than the set value, a signal can be automatically provided to the controller to stop the water pump, so that the electricity charge expense can be saved, and the service life of the water pump can be prolonged;
4. the installation method of the check valve is redesigned, and the check valve is fixed and locked through the fastening screw, so that the cost of the flange and the cost of a mold for manufacturing the flange can be saved, and the appearance is more exquisite and attractive;
the water pump of the scheme B:
set up pressure sensor 6 and rivers inductor 7 on the pump body of water pump, can in time detect water pressure and rivers in the pipeline, can carry out the multi-mode switching automatically under the service behavior of difference, and application scenario is wide, strong adaptability has realized real intelligent control.
1. When the water pressure of the pipeline meets the water flow starting condition, the pipeline can be automatically switched to a water flow control mode, the tap water pump is opened to start pressurized water supply, and the tap water pump is closed to automatically shut down, so that the pipeline is very convenient;
2. when the water pressure of the pipeline is lower than the water flow starting condition, the pipeline can be automatically switched to a non-pressure self-starting standby pressure maintaining mode, the operation is stopped at a lower power and a lower rotating speed, the user is ensured to automatically pressurize and supply water by opening the faucet at any time, and the faucet automatically enters the standby pressure maintaining mode at a lower rotating speed and a lower power when closed;
3. when the pressure sensor detects that the water inlet pressure is greater than the highest lift of the water pump, the water pump cannot work, electricity is saved, when the pressure in the pipeline is detected to be zero, the condition that the water in the pipeline is in a water shortage state is proved, and the water pump can be automatically stopped for protection;
4. when water is supplied after water supply is cut off, the water pump can automatically start a water supply mode meeting various conditions, the intelligent and full-automatic water supply device is truly intelligent, the electric charge is saved, and the service life is prolonged.
Drawings
Fig. 1 is a schematic view of a water pump according to a solution a of the present invention;
fig. 2 is an exploded view of the water pump structure according to the embodiment of the present invention a;
fig. 3 is a first cross-sectional view of the pump head of the water pump according to the embodiment of the present invention;
fig. 4 is a second sectional view of the pump head of the water pump according to the embodiment of the present invention;
fig. 5 is a schematic structural view of a pump head of the water pump according to the embodiment of the present invention;
FIG. 6 is a view of the installation position of the inlet and outlet pressure sensors and the check valve according to the embodiment of the present invention;
fig. 7 is the water pump sensor map of the scheme B of the utility model.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
Example A
The structure implementation of the water pump is shown in figures 1-6, and the induction water pump with the water supply mode automatically adjusted comprises a pump head 1 and a water pump main body 2, wherein a water inlet pipeline 101 and a water outlet cavity 102 are arranged in an inner cavity of the pump head 1, the water inlet pipeline is communicated with the water outlet cavity, the output of the water pump main body is fixedly connected at the joint of the water inlet pipeline and the water outlet cavity, the end part of the water inlet pipeline 101 is provided with a water inlet pipe 103, the side wall of the water inlet pipe is provided with a mounting hole 104, a water inlet pressure sensor 6 is in threaded fit with the mounting hole 104, the water outlet cavity is provided with a water outlet pipe 105, the side wall of the water outlet pipe is provided with a mounting hole 104, and the mounting hole 104 is in threaded fit with a water outlet pressure sensor 3. A check valve 106 is provided in the inner cavity of the inlet pipe 103, and is installed at the right side of the installation hole 104. After installation, the inlet pressure sensor 6 is disposed between the inlet and the check valve 106. The side wall of the pump head 1 is further provided with a screw hole 108, the screw hole 108 is screwed with the temperature sensor 4, and the sensing end of the temperature sensor 4 is inserted into the water outlet cavity 102. The water inlet pressure sensor 6, the water outlet pressure sensor 3 and the temperature sensor 4 are respectively in signal connection with the controller 201 of the water pump main body 2.
Be provided with the internal thread on the inner wall of inlet tube 103, be provided with fastening screw 107 in the inlet tube 103, be provided with the external screw thread on fastening screw 107's the outer wall, with inlet tube spiro union cooperation in order to lock check valve 106 in the bottom of inlet tube 103, inlet tube 103 is provided with the stair structure with the junction of inlet line 101, installation back check valve 106 and the cooperation of stair structure butt.
The fastening screws 107 are provided with grooves 1071 at least two of which are provided. The fastening screw is rapidly rotated by being inserted and pressed in the groove 1071 by an external tool to install or remove the fastening screw.
The water outlet pipes 105 are provided with two groups, including a longitudinal water outlet pipe and a transverse water outlet pipe, which are respectively arranged on the bottom plate and the side wall of the pump head. The side wall of the pump head 1 is provided with a water filling hole 109, and a plug 5 is screwed in the water filling hole 109. When first used or used as a self-priming function, water is added through the water addition hole 109.
Example B
The water pump structure is implemented as shown in fig. 7, the induction water pump with the water supply mode automatically adjusted comprises a pump body and a water pump main body motor, a pressure sensor and a water flow sensor are respectively arranged at the water inlet part and the water outlet part of the pump body, the pressure sensor and the water flow sensor can be arranged at the water inlet part or the water outlet part of the pump body together, and then the pressure sensor and the water flow sensor are connected with a controller on the pump body motor through signal lines to automatically switch and control the operation of the water pump in a multi-mode.
The scheme of the A scheme comprises a water supply mode of a water pump and an automatic switching mode scheme:
a pressure sensor is arranged on the left side (water inlet side) of a check valve on the pump body of the water pump or on a water inlet pipe and is used for detecting the water pressure change in a water inlet pipeline; a pressure sensor is arranged on a water outlet cavity or a water outlet pipe on the right side (water outlet side) of a check valve on a pump body of the water pump and is used for detecting pressure change in a water outlet pipeline.
The water pump has the following water supply modes:
a. a constant-pressure water supply mode;
b. an incoming water automatic pressure maintaining mode;
c. a power saving mode;
d. manual and automatic selectable modes;
constant-pressure water supply mode:
the user can set the required constant pressure and the starting pressure of the user, and the water outlet pressure is always kept constant no matter a plurality of water taps are opened within the performance range.
The automatic pressure maintaining mode of the incoming water:
when water comes again after water shortage protection, the force sensing sensor on the water inlet pipeline can sense the water in time, the water pump can be automatically started to carry out pressure maintaining on the water outlet pipeline, the automatic stop can be realized after the pressure maintaining is finished, the automatic pressurization water supply can be realized when a user opens the faucet at any position, the manual operation is not needed, and the water supply device is very convenient.
A power saving mode:
when a pressure sensor on the water inlet pipeline detects that the water inlet pressure exceeds the use pressure set by a user, the water pump automatically stops working, and when the pressure sensor detects that the water inlet pressure is lower than the set pressure, the water pump can automatically start to compensate the pressure, so that the mode saves electricity and can prolong the service life of the water pump.
Manual and automatic selectable modes:
1. manual mode:
when all sensors are in failure or water is needed in special water use occasions, the manual starting can be selected for pressurizing water supply.
2. Automatic mode:
the common household water is in an automatic mode, when a user opens the water faucet and the water outlet pressure is lower than a set value, the water pump automatically starts pressurization water supply, and when all the water faucets are closed, the water pump is automatically shut down, so that the water is very convenient to use. The scheme B comprises a water supply mode and an automatic switching scheme of a water pump:
the pressure sensor and the water flow sensor are arranged at the water inlet part or the water outlet part of the water pump body respectively, or the pressure sensor and the water flow sensor can be arranged at the water inlet part or the water outlet part of the pump body together, the pressure sensor is used for detecting the pressure change in a pipeline, and the water flow sensor is used for detecting the water flow condition when water is used.
The pump has the following water supply modes and switching schemes:
1. a water flow control mode;
2. a non-pressure standby pressure maintaining mode;
3. automatically switching modes when water comes;
4. a power saving mode.
And (3) water flow control mode:
when the force-sensitive sensor detects that the water pressure in the pipeline meets the requirement of starting a water flow mode, the mode can be automatically switched to, namely, the water faucet water pump is turned on to start pressurized water supply, the water faucet water pump is turned off to stop working, the operation is very convenient and electricity is saved, and the mode is set as a priority mode because the standby power consumption is not needed.
A non-pressure standby pressure maintaining mode:
when the pressure sensor detects that the water pressure in the pipeline is too low to start the water flow switch, the pressure sensor can be automatically switched to a non-pressure standby pressure maintaining mode, namely, the pressure sensor operates at a lower power and a lower rotating speed all the time, the pressure sensor plays a role in compensating and increasing the pressure of the water pressure in the pipeline, a user can increase the pressure of water supplied by opening a water faucet at any time, the water faucet is closed and operates at a lower power and a lower rotating speed all the time for maintaining the pressure, and the pressure sensor is particularly suitable for being used in occasions where the water pressure is often very low.
A power saving mode:
when the pressure sensor detects that the water pressure in the pipeline is greater than the maximum lift of the water pump, the water pump is automatically switched to a power saving mode, the water pump does not need to work for pressurization, and the service life is greatly prolonged while power is saved.
Automatic switching mode when water comes:
many water pumps on the market are single water pumps in a non-pressure standby pressure maintaining mode, and have the following defects:
1. the water pump always works to consume electricity when water is used or not, and the service life is influenced;
2. because the induction device is not arranged, the incoming call cannot be automatically started after the power is cut off, and the incoming call needs to be manually started;
3. because he does not have an induction device, the water-saving water dispenser can not automatically work when water comes after water shortage protection, needs manual starting and is troublesome.
In order to solve the problem, the pressure sensor and the water flow sensor are additionally arranged on the pump, and the water pump can automatically work no matter water comes after power failure or water shortage, and the specific implementation scheme is as follows:
a. when power is supplied after power failure, the pump directly enters a preferential water flow control mode, namely, a water faucet is turned on, a water pump is started to work, the water faucet is turned off, and the water pump stops working;
b. when water comes again after water is cut off, the pressure sensor can detect the water pressure condition. When the water pressure in the pipeline meets the requirement of starting water flow control, the pipeline is automatically switched to a water flow control mode; when the pressure sensor detects that the water pressure cannot meet the requirement of water flow control starting, the pressure sensor is automatically switched to a non-pressure standby pressure maintaining mode; when the pressure sensor detects that the water pressure in the pipeline is greater than the highest lift of the water pump, the power-saving mode is automatically switched to; at this moment, the water pump need not the work pressure boost, and very the power saving, when detecting that the water pressure in the inlet channel is zero (lack of water promptly) the water pump just stops work and prevents dry run, pressure sensors can detect the water pressure situation in the pipeline again and automatically get into the water supply mode of various conditions when coming water again, has realized real full-automatic intelligent control, and various service conditions are unrestricted, and the adaptability is very strong.

Claims (8)

1. The induction water pump with the automatic water supply mode adjusting function is characterized by comprising a pump head (1) and a water pump main body (2), wherein a water inlet pipeline (101) and a water outlet cavity (102) are arranged in an inner cavity of the pump head (1), the water inlet pipe is communicated with the water outlet cavity, the output end of the water pump main body is fixed at the joint of the water inlet pipe and the water outlet cavity, a water inlet pipe (103) is arranged at the end part of the water inlet pipeline (101), a mounting hole (104) is formed in the side wall of the water inlet pipe, a check valve (106) is arranged in the inner cavity of the water inlet pipe (103), the check valve is arranged on the right side of the mounting hole (104), a water inlet pressure sensor (6) is in threaded fit with the mounting hole (104) and is arranged on the left side of the check valve (106), a water outlet pipe (105) is arranged on the water outlet cavity, the side wall of the water outlet pipe is provided with the mounting hole (104) and is in threaded fit with a water outlet pressure sensor (3); or a water flow sensor (7) is arranged in the inner cavity of the water outlet pipe (105).
2. The induction water pump with automatic water supply mode regulation according to claim 1, characterized in that the water inlet pressure sensor (6) and the water outlet pressure sensor (3) are respectively in signal connection with the controller (201) of the water pump main body (2).
3. The induction water pump of claim 1, wherein the inner wall of the water inlet pipe (103) is provided with internal threads, the water inlet pipe (103) is provided with a fastening screw (107), the outer wall of the fastening screw (107) is provided with external threads, and the external threads are in threaded fit with the water inlet pipe to lock the check valve (106) at the bottom end of the water inlet pipe (103).
4. The induction water pump of claim 3, wherein a step structure is arranged at the joint of the water inlet pipe (103) and the water inlet pipeline (101), and the check valve (106) is in butt fit with the step structure after installation.
5. An induction pump of automatic adjustment of water supply mode according to claim 3, characterized in that the fastening screws (107) are provided with grooves (1071) at the top, and at least two groups of grooves are provided.
6. A water supply mode self-adjusting induction pump according to claim 1, characterized in that said water outlet pipes (105) are provided in two sets, including a longitudinal water outlet pipe and a transverse water outlet pipe, respectively provided on the bottom plate and the side wall of said pump head (1).
7. The induction water pump of claim 6, wherein a water feeding hole (109) is formed in a side wall of the pump head (1), and a plug (5) is screwed in the water feeding hole (109).
8. The induction water pump with the automatic water supply mode adjusting function as claimed in claim 1, wherein a screw hole (108) is further formed in a side wall of the pump head (1), a temperature sensor (4) is screwed into the screw hole (108), and a sensing end of the temperature sensor (4) is inserted into the water outlet cavity (102).
CN202222197501.6U 2022-08-19 2022-08-19 Induction water pump with automatic water supply mode adjustment function Active CN217950640U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202222197501.6U CN217950640U (en) 2022-08-19 2022-08-19 Induction water pump with automatic water supply mode adjustment function

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202222197501.6U CN217950640U (en) 2022-08-19 2022-08-19 Induction water pump with automatic water supply mode adjustment function

Publications (1)

Publication Number Publication Date
CN217950640U true CN217950640U (en) 2022-12-02

Family

ID=84232739

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202222197501.6U Active CN217950640U (en) 2022-08-19 2022-08-19 Induction water pump with automatic water supply mode adjustment function

Country Status (1)

Country Link
CN (1) CN217950640U (en)

Similar Documents

Publication Publication Date Title
CN100540966C (en) Replenish changeable water supply controller, be used for replenishing the system and method for mains water
CN100511068C (en) Intelligent pressure regulating water supply controlling method
CN208309676U (en) A kind of intelligent frequency-conversion water system
CN217950640U (en) Induction water pump with automatic water supply mode adjustment function
CN111810468A (en) Pump control hydraulic system, device and control method for steam turbine servomotor
CN100406132C (en) Pressure regulator
CN102966775B (en) Direct-current piston type emergency shutoff valve and application thereof
CN201344089Y (en) Control device for digital valve speed governor
KR100698229B1 (en) A system for fluid supply quantity automatic controlling using pressure change of suppliedfluid
US6644929B2 (en) Pressure regulating valve
CN201963628U (en) Novel combination valve
CN206072453U (en) Can self-discharging pilot relief valve
CN210830534U (en) Adjustable ball-cock assembly
CN210459396U (en) Improved numerical control three-tank stacked non-negative pressure water supply equipment
AU2003262296A1 (en) Rainwater harvesting
CN213655097U (en) Automatic water-replenishing control device for water pool
CN112663722A (en) Hydraulic control gravity flow pipeline flow adjusting system
JP2003067057A (en) Pressure-reduction water supply device
CN2519893Y (en) Pressure releasing structure for one-way valve of electric water heater
CN2871924Y (en) Charging-controlled combined valve
CN213628226U (en) Accurate hydraulic valve body of convenient control
CN201269079Y (en) Ramp type flow control valve
CN215059835U (en) Regulating exhaust valve assembly
CN219796194U (en) Compensation type emergency electromagnetic valve
CN220247080U (en) Intelligent regulation and control water conservation's secondary water supply installation

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant