CN112010439B - Water flow control method of water purifier - Google Patents
Water flow control method of water purifier Download PDFInfo
- Publication number
- CN112010439B CN112010439B CN202010651798.1A CN202010651798A CN112010439B CN 112010439 B CN112010439 B CN 112010439B CN 202010651798 A CN202010651798 A CN 202010651798A CN 112010439 B CN112010439 B CN 112010439B
- Authority
- CN
- China
- Prior art keywords
- water
- elastic wave
- wave generator
- control method
- flow control
- 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
Links
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/008—Control or steering systems not provided for elsewhere in subclass C02F
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/442—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by nanofiltration
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/002—Construction details of the apparatus
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/40—Liquid flow rate
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Nanotechnology (AREA)
- Physical Water Treatments (AREA)
Abstract
A water flow control method of a water purifier comprises a preposed filter element, a membrane filter element, a first water pipe connecting a water outlet end of the preposed filter element and a water inlet end of the membrane filter element, and a second water pipe arranged at a pure water outlet end of the membrane filter element. The elastic wave generator replaces a booster pump and has the advantages of no noise, small volume and high control precision.
Description
Technical Field
The invention relates to a water purifier, in particular to a method for controlling the flow in a water pipe of the water purifier.
Background
When the household water purifier is installed, the water inlet pressure needs to be measured, and if the water inlet pressure is too high (more than 0.3MPa), a pressure reducing valve needs to be installed firstly, so that the normal work of the water purifier can be ensured; if the water inlet pressure is too small (< 0.1MPa), a booster pump is needed to be used on the water purifier for pressurization. The booster pump can create a stable environment for the normal work of the filtering part, and further the purified water flow is ensured. For the related documents, reference may be made to "an intelligent emergency water storage and purification system" (No. CN205773821U) of chinese utility model patent No. ZL201620522459.2, which discloses a booster pump for increasing water pressure; reference may also be made to the chinese invention patent application publication No. 201911421303.X, which discloses a water purifier with automatic backwashing and an automatic backwashing method thereof (application publication No. CN 111056677A).
However, the use of booster pumps has the following disadvantages:
firstly, the booster pump itself is noisy when working, although the lowest decibel of the water purifier booster pump that can be realized on the market at present reaches about 40dB, it is often necessary to spend a great cost to reduce the noise.
Secondly, the booster pump is put in the cupboard and easily causes the cupboard or the water pipe vibration, and the noise that end user actually felt is usually higher, and user experience is poor.
Finally, in order to ensure sufficient purified water flow, a larger-volume booster pump is needed, and the large-volume booster pump usually adopts an external mode, so that the cabinet volume is greatly occupied, and the available space under a kitchen is reduced.
Disclosure of Invention
The technical problem to be solved by the present invention is to provide a water flow control method for a water purifier using an elastic wave generator to boost pressure, in view of the above technical situation.
The technical scheme adopted by the invention for solving the technical problems is as follows: a water flow control method of a water purifier comprises a preposed filter element, a membrane filter element, a first water pipe connecting the water outlet end of the preposed filter element and the water inlet end of the membrane filter element, a second water pipe arranged at the pure water outlet end of the membrane filter element, a main control board, an elastic wave generator and a flow meter connected with the main control board, wherein the elastic wave generator is arranged on the outer wall of the first water pipe and can pressurize water flow in the first water pipe, the flow meter is arranged on the second water pipe,
according to the formula:
wherein, q is the mass flow of the liquid caused by elastic wave of the pipe wall, kg/s;
a-elastic wave amplitude, m;
d-tube diameter, m;
cs-the speed of sound of the material inside the tube, m/s;
rho-liquid density, kg/m3；
The main control board controls the flow rate by controlling the elastic wave amplitude of the elastic wave generator according to the feedback of the flowmeter.
Furthermore, a one-way valve or a water inlet electromagnetic valve connected with the main control board is arranged on the first water pipe.
The elastic wave generator can be an electromagnetic elastic wave generator, a physical hammering elastic wave generator or a hydraulic elastic wave generator.
The electromagnetic elastic wave generator can adopt the following structure: the elastic wave generator at least comprises a frame, a driving mechanism and a vibrating head, wherein the driving mechanism is arranged on the frame and can drive the vibrating head to move back and forth, and the vibrating head is close to the outer wall of the first water pipe and is in driving connection with the driving mechanism. The frame is provided with an annular inner ring, the driving mechanism at least comprises at least two excitation assemblies and at least two excitation coils, and the at least two excitation assemblies are arranged on the inner ring of the frame; the number of the magnet exciting coils is at least two, and the magnet exciting coils are sleeved on the periphery of the corresponding magnet exciting assemblies; the number of the vibrating heads is at least two, and the vibrating heads can stretch and retract relative to the excitation assembly; and a driving coil is arranged on the periphery of each vibration head.
Preferably, the front end of the excitation assembly forms a connection port, and the rear end of the vibration head extends into the connection port and is capable of extending and contracting relative to the connection port.
Furthermore, a shoulder part is formed on the periphery of the vibrating head, a supporting spring is sleeved on the periphery of the vibrating head, one end of the supporting spring abuts against the shoulder part, and the other end of the supporting spring abuts against the front end of the excitation assembly.
Further, the front end of the excitation assembly is provided with a magnetic shielding ring around the connecting port, and the middle part of the vibration head is provided with a magnetic shielding cake.
The physical hammer type elastic wave generator can adopt the following structure: the elastic wave generator at least comprises a frame, a driving mechanism and a vibrating head, wherein the driving mechanism is arranged on the frame and can drive the vibrating head to move back and forth, and the vibrating head is close to the outer wall of the first water pipe and is in driving connection with the driving mechanism. The frame is provided with an annular inner ring, the number of the vibrating heads is at least two, and the driving mechanism comprises
A gear ring rotatably provided in the inner ring of the frame and having inner teeth formed on an inner side thereof;
at least two driven gears which can be rotatably arranged on the inner side of the gear ring and are in meshed transmission connection with the internal teeth; and
one end of the connecting rod is movably connected with the driven gear, and the other end of the connecting rod is movably connected with the respective vibrating head.
Furthermore, the gear ring can be rotatably arranged on the inner ring of the frame through a bearing.
The hydraulic elastic wave generator at least comprises
A cylinder body;
a diaphragm hermetically provided inside the cylinder; the middle part of the diaphragm is provided with a hollow cavity for the first water pipe to penetrate through; and
the piston rod is arranged in the cylinder body in a way of axially moving back and forth, and is in sealing fit with the inner wall of the cylinder body;
an oil cavity is formed in the area, located between the inner end of the piston rod and the inner wall of the diaphragm, of the cylinder body, and hydraulic oil is contained in the oil cavity.
Furthermore, the hydraulic elastic wave generator also comprises
A frame;
the rotary table can be rotatably arranged on the rack;
one end of the connecting rod can be movably connected with the turntable, and the other end of the connecting rod is movably connected with the outer end of the piston rod.
In order to ensure that the piston rod runs smoothly and does not deviate, a guide sleeve is arranged on the port of the cylinder body, and the piston rod is arranged in the guide sleeve in a penetrating mode.
Compared with the prior art, the invention has the advantages that: the elastic wave generator applies external force to act on the pipe filled with liquid periodically, the elastic wave is transmitted in the pipe wall, finally, the liquid starts to flow along the pipeline, the elastic wave is transmitted in the pipe wall, the liquid layer close to the pipe wall is vibrated and moved, then, the liquid layer close to the pipe wall starts to move relative to the adjacent liquid layer, friction force is generated between the layers in relative operation of the liquid layers, the friction force can drag liquid in the adjacent layer, the process is repeated, and finally, the liquid pressurized flow is realized. The elastic wave generator can realize noiseless pressurization water supply, is small in size and can be integrated into the water purifier, the water outlet flow of purified water can be controlled only by the amplitude, the control precision is greatly improved, and the water outlet flow can meet the design requirement.
Drawings
Fig. 1 is a schematic structural diagram of embodiment 1.
Fig. 2 is a control schematic diagram of embodiment 1.
Fig. 3 is a schematic structural view of an elastic wave generator in example 1.
Fig. 4 is a perspective sectional view of fig. 3.
FIG. 5 is a control logic diagram of embodiment 1.
Fig. 6 is a schematic structural view of an elastic wave generator in example 2.
Fig. 7 is a schematic structural view of an elastic wave generator in example 3.
Fig. 8 is a perspective sectional view of fig. 7.
Detailed Description
The invention is described in further detail below with reference to the accompanying examples.
In embodiment 1, as shown in fig. 1, the water purifier in this embodiment includes a front filter element 104, a membrane filter element 100, a first water pipe, a second water pipe, an elastic wave generator 10, and a main control board 106, where the first water pipe 101 is connected between a water outlet end of the front filter element 104 and a water inlet end of the membrane filter element 100, the pure water outlet end of the membrane filter element 100 is provided with the second water pipe 102, the elastic wave generator 10 is disposed on an outer wall of the first water pipe 101 and is capable of pressurizing water flow in the first water pipe 101, and the second water pipe 102 is provided with a flow meter 105. The first water pipe 101 is provided with a check valve 107 and a water inlet solenoid valve 108 before the elastic wave generator 10. The membrane cartridge 100 in this embodiment may be a nanofiltration cartridge, an ultrafiltration cartridge, or the like.
The principle of the elastic wave making the liquid flow is as follows: the elastic wave generator applies external force to periodically act on the pipe filled with liquid, so that the elastic wave is transmitted in the pipe wall, finally the liquid starts to flow along the pipeline, the elastic wave is transmitted in the pipe wall, vibrates and moves the liquid layer close to the pipe wall, and then the liquid layer close to the pipe wall starts to move relative to the adjacent liquid layer. And the relative operation of the liquid layers can generate friction force between the layers, the friction force can drag liquid in the adjacent layers, and the steps are repeated, so that the pressurized flow of the liquid is finally realized.
The elastic wave mentioned therein is one of stress waves, and is a form in which stress and strain caused by disturbance or external force action are transmitted in an elastic medium. An elastic wave is a wave formed by propagation of minute vibrations of a substance particle propagating in a solid material, and is called an elastic wave because only minute deformations cause an object to be in an elastic state.
The elastic waves comprise impact elastic waves, ultrasonic waves and sound waves, wherein the impact elastic waves are generated by impact of a hammer or other vibration excitation devices, and the vibration excitation device has the characteristics of large vibration excitation energy and simplicity in operation. That is, the impact elastic wave is an elastic wave excited by physical means such as manual hammering or electromagnetic excitation.
Referring to fig. 2, the main control board 106 is connected to the elastic wave generator 10, the flow meter 105 and the water inlet solenoid valve 108.
The one-way valve is arranged in front of the elastic wave generating device or the water inlet electromagnetic valve is matched for use, when the elastic wave generating device applies periodic external force, the one-way valve can ensure that liquid can only flow in one direction towards the membrane filter element, the one-way valve is simple in structure and simple to control, but when the elastic wave generating device stops working, as friction force can be slowly reduced, purified water still slowly flows to the membrane filter element from the front composite filter element, so that the pressure of the front part of the elastic wave generating device is increased, and parts are large in bearing pressure and easy to fatigue damage; if the water inlet electromagnetic valve (normally closed) is used in a matched mode, when the elastic wave generating device applies external force, the main control board controls the water inlet electromagnetic valve to be in a closed state, when the elastic wave generating device does not apply external force, the main control board controls the water inlet electromagnetic valve to be in an open state, the flow direction of water flow is ensured through circular switching, when the elastic wave generating device stops working, the water inlet electromagnetic valve is in a closed state, purified water in the front composite filter element cannot flow to the membrane filter element any more, and the problem of overlarge pressure bearing is avoided.
As shown in fig. 3 and 4, the elastic wave generator 10 in this embodiment is an electromagnetic elastic wave generator, and includes a frame 1, a plurality of driving mechanisms, and a plurality of vibrating heads 3, and a connecting column 11 with a screw hole is disposed on the periphery of the frame 1, so as to be conveniently disposed in the water purifier. A plurality of actuating mechanism evenly locate the annular inner circle of frame 1 and can drive each vibration head 3 round trip movement, vibration head 3 is close to the outer wall of first water pipe 101 and is connected with actuating mechanism drive.
The driving mechanism comprises an excitation assembly 2 and an excitation coil 21, and the excitation coil 21 is sleeved on the periphery of the corresponding excitation assembly 2; the vibrating head 3 can extend and retract relative to the excitation assembly 2; each vibration head 3 is provided with a driving coil 31 on the outer periphery.
The front end of the excitation component 2 in this embodiment forms a connection port, and the rear end of the vibrating head 3 extends into the connection port and can stretch relative to the connection port. The periphery of the vibrating head 3 is provided with a shoulder part and is sleeved with a supporting spring 32, one end of the supporting spring 32 is abutted against the shoulder part, and the other end is abutted against the front end of the excitation component 2. The front end of the excitation component 2 is provided with a magnetic shielding ring 22 around the connecting port, and the middle part of the vibrating head 3 is provided with a magnetic shielding cake 33.
The operation principle of the elastic wave generator 10 in this embodiment is as follows:
when the electromagnetic elastic wave generator works, direct current is supplied to the driving coil to generate magnetic fields in 1 fixed direction (for example, as shown in fig. 4, under the action of electrifying the driving coil, the vibration head forms a magnetic field in a fixed direction of an S-level near the center of a circle end and an N-level far from the center of a circle end), alternating current is supplied to the exciting coil, a magnetic field with N, S magnetic poles changing constantly is generated along with the constant change of the current direction, and under the action of the magnetic field with the constant changing of the magnetic pole direction of the exciting coil, a periodic and cyclic external force is generated on the vibration head to cause the vibration head to periodically press and release a first water pipe (PE material) (as shown in fig. 4, when the exciting coil generates the N-level near the center of a circle end and the S-level far from the center of a circle end under the action of alternating current, the vibration head is in a state of pressing the first water pipe, and when the alternating current changes, the exciting coil generates the S-level near the center of a circle end, the far circle center end is N-level, so that suction is generated on the vibrating head, and the vibrating head is in a state of loosening the first water pipe at the moment. ) When the main control board receives feedback of the flowmeter and needs to adjust amplitude intensity, amplitude can be controlled by adjusting the size of alternating current, and in addition, the frequency of the vibration head for applying external force (namely vibration) can be realized by adjusting the frequency of the alternating current. The magnetic shielding ring is bonded on the excitation assembly, and the vibration head is embedded with a magnetic shielding cake for shielding the mutual influence of each magnetic field and the influence on the water purifier, the material of the magnetic shielding ring/cake can adopt magnetic steel, and the magnetic shielding ring and the magnetic shielding cake at the position all adopt 430 steel plates. During installation, the first water pipe is inserted into the central hole, and then the body frame is fixed on the whole water purifier, so that the installation is convenient and the operability is strong. In addition, the electromagnetic scheme can realize high-frequency application of periodic external force and has the characteristics of small friction, low electromagnetic interference, high vibration precision and large load inertia.
The purpose of using the elastic wave generator is that the water production flow can meet the requirement, and in order to ensure that the water production flow can meet the requirement of the water purifier flow, the required elastic wave amplitude is calculated according to the following formula.
Wherein, q is the mass flow of the liquid caused by elastic wave of the pipe wall, kg/s;
a-elastic wave amplitude, m;
d-tube diameter, m;
cs-the speed of sound of the material inside the tube, m/s;
rho-liquid density, kg/m3；
From the above formula, it can be known that the larger the diameter of the pipe is, the larger the amplitude of the elastic wave required to reach when the same flow rate is reached is, and a general water purifier only uses 2 branch pipes and 3 branch pipes, so 3 branch pipes with larger diameters are selected as an example; the booster pump selected by the water purifier is 400G or 600G standard, and here, a 600G booster pump with a larger flow rate is selected as an example.
Therefore, when the pipe is a first 3-minute water pipe (with an inner diameter of 6.35mm) and the flow rate of clean water is required to reach the flow rate (i.e. 1.58L/min) provided by a 600G booster pump, the amplitude of the elastic wave to be reached is calculated, and the sound velocity of the first water pipe is 2.48X103m/s, and the above parameters are substituted into the formula 1:
namely, the amplitude of the elastic wave only needs to reach 0.2205mm, and the amplitude is very small and is easy to reach. When the diameter of the pipe is smaller (when 2 pipes are adopted), the flow rate is smaller, the amplitude is smaller, and the method can be completely realized on a household water purifier. Even can use on commercial large-scale water purification unit, when calculating commercial purifier flow demand and reaching 5L/min like the above mode, amplitude A also is only 0.3237 mm.
In addition, a flowmeter is added at the water production end for detecting the flow, the detected flow is fed back to the main control board, the main control board calculates the amplitude required by the elastic wave according to the logic program of formula 1, and outputs an intensity adjusting signal of the elastic wave generator, so that the amplitude of the elastic wave is adjusted, the flow is finally influenced, and the strong self-adaptive pressurizing flow is realized, and the logic diagram is as shown in the following figure 5.
In embodiment 2, as shown in fig. 6, the elastic wave generator 10 in this embodiment is a physical hammer type elastic wave generator, and specifically includes a frame 1, a gear ring 1b, a driven gear 2b, a connecting rod 3a, and a vibrating head 3.
The frame 1 is provided with an annular inner ring, and the gear ring 1b is rotatably arranged on the inner ring of the frame 1 through a bearing 3b and is internally provided with internal teeth; each driven gear 2b is rotatably provided on the frame 1 through a bearing 31b for a plurality of gears uniformly arranged inside the ring gear 1 b. The driven gear 2b is in meshed transmission connection with the inner teeth of the inner ring 1 b. One end of the connecting rod 3a is movably connected with the driven gear 2b, and the other end is movably connected with the respective vibrating head 3, wherein the connecting rod can also be movably connected through a bearing. The ring gear 1b may be directly driven by a motor not shown or driven by a transmission mechanism. Other structures refer to example 1.
The working principle of the elastic wave generator in the embodiment is as follows:
the physical hammering elastic wave generator is in a maximum pressure applying state, the vibration head is in a state farthest away from the driven gear, when the gear ring wheel rotates clockwise (or rotates anticlockwise), the physical hammering elastic wave is in a maximum loosening state, the vibration head is in a state closest to the driven gear, then the gear ring wheel rotates anticlockwise (or rotates clockwise) to return to a pressure applying state, and the first water pipe is made to form elastic waves in a reciprocating mode. In addition, the device can also satisfy the first water pipe of different specification and dimension (in the purifier 2 minute PE pipe and 3 minute PE pipes of using usually), as long as the turned angle of control ring gear wheel, just can control the first water pipe diameter size that the center was reserved when the vibration head was exerted pressure the state to satisfy the first water pipe requirement of different specification and dimension.
When the main control board receives a flow regulation demand, the main control board controls the rotation angle of the gear ring wheel of the physical hammering type elastic wave generator, the flow is increased when the rotation angle is large, and the flow is reduced when the rotation angle is small.
The elastic wave generator in the embodiment has the advantages of mature and simple structure, easy control and realization, large amplitude of elastic waves, slightly blocked steering switching phenomenon and slightly low precision.
In example 3, fig. 7 and 8, the elastic wave generator 10 in this example is a hydraulic elastic wave generator. The device comprises a frame 1, a rotary table 4a, a cylinder body 1a, a diaphragm 6a, a connecting rod 3a and a piston rod 2a, wherein the rotary table 4a is rotatably arranged on the frame 1 through a bearing 41 a; the diaphragm 6a can adopt silica gel, and the diaphragm 6a is arranged on the inner side of the cylinder body 1a in a sealing way; the middle part of the diaphragm 6a is provided with a hollow cavity for the first water pipe 101 to penetrate through; the piston rod 2a is arranged in the cylinder body 1a in a way of axially moving back and forth, the piston rod 2a is in sealing fit with the inner wall of the cylinder body 1a, and particularly, a sealing ring is arranged at the head part of the piston rod 2 a; the area of the cylinder block 1a between the inner end of the piston rod 2a and the inner wall of the diaphragm 6a is formed with an oil chamber 11a, and the oil chamber 11a has hydraulic oil therein.
One end of the connecting rod 3a is movably connected with the rotary disc 4a through a bearing 42a, and the other end is movably connected with the outer end of the piston rod 2a through a bearing 43 a. A guide sleeve 5a is arranged on the port of the cylinder body 1a, and the piston rod 2a penetrates through the guide sleeve 5 a. The turntable 4a may be driven directly by a motor not shown or by a gear change mechanism. Other structures refer to example 1.
The working principle of the elastic wave generator in the embodiment is as follows:
when the piston rod moves linearly downwards, hydraulic oil is compressed, the hydraulic oil applies pressure to the diaphragm, the diaphragm applies pressure to the first water pipe, when the piston rod moves linearly upwards, the hydraulic oil releases the pressure, and the first water pipe is in a pressure release state, so that when the piston rod moves linearly upwards and downwards, cyclic periodic external force is applied to the first water pipe, and elastic waves are generated to drive purified water to flow in a pressurized mode. The linear reciprocating motion of the piston rod is realized by driving the connecting rod to rotate by the turntable.
When the main control board receives a flow regulation demand, the main control board controls the rotation angle of a rotary disc of the hydraulic elastic wave generator, the rotation angle of the rotary disc directly determines the strength of the piston rod moving downwards to compress hydraulic oil, when the rotation angle of the rotary disc is large, the distance of the piston rod moving downwards in a straight line is long, the pressure on the hydraulic oil is large, the amplitude of a first water pipe is large, and the flow of purified water is large; on the contrary, when the rotating angle of the rotating disc is small, the distance of the downward linear motion of the piston rod is small, the pressure on the hydraulic oil is small, the amplitude of the first water pipe is small, and the flow rate of purified water is small.
The elastic wave generator in the embodiment has the advantages of high amplitude control precision and high amplitude intensity.
Claims (13)
1. A water flow control method of a water purifier comprises a preposed filter element (104), a membrane filter element (100) and a first water pipe (101) connected with the water outlet end of the preposed filter element (104) and the water inlet end of the membrane filter element (100), wherein the pure water outlet end of the membrane filter element (100) is provided with a second water pipe (102), the water flow control method is characterized by also comprising a main control board (106), an elastic wave generator (10) and a flow meter (105) which are connected with the main control board (106), the elastic wave generator (10) is arranged on the outer wall of the first water pipe (101) and can pressurize the water flow in the first water pipe (101), and the flow meter (105) is arranged on the second water pipe (102),
according to the formula:
wherein, q is the mass flow of the liquid caused by elastic wave of the pipe wall, kg/s;
a-elastic wave amplitude, m;
d-tube diameter, m;
cs-the speed of sound of the material inside the tube, m/s;
rho-liquid density, kg/m3；
The main control board (106) controls the elastic wave amplitude of the elastic wave generator according to the feedback of the flowmeter (105) so as to control the flow rate.
2. The water flow control method of the water purifier according to claim 1, wherein the first water pipe (101) is provided with a one-way valve (107) or a water inlet solenoid valve (108) connected with a main control panel (106).
3. The method for controlling water flow of a water purifier according to claim 1, wherein the elastic wave generator (10) is an electromagnetic elastic wave generator, a physical hammering elastic wave generator or a hydraulic elastic wave generator.
4. The water flow control method of the water purifier according to claim 3, wherein the elastic wave generator (10) at least comprises a frame (1), a driving mechanism and a vibrating head (3), the driving mechanism is arranged on the frame (1) and can drive the vibrating head (3) to move back and forth, and the vibrating head (3) is close to the outer wall of the first water pipe (101) and is in driving connection with the driving mechanism.
5. The water flow control method of the water purifier according to claim 4, wherein the frame (1) has an annular inner ring, the driving mechanism at least comprises an excitation assembly (2) and an excitation coil (21), the excitation assembly (2) is at least two and is arranged on the inner ring of the frame (1); the number of the magnet exciting coils (21) is at least two and is sleeved on the periphery of the corresponding magnet exciting assembly (2); the number of the vibrating heads (3) is at least two, and the vibrating heads can stretch and retract relative to the excitation assembly (2); a driving coil (31) is arranged on the periphery of each vibration head (3).
6. The water flow control method of the water purifier according to claim 5, wherein the front end of the excitation assembly (2) forms a connection port, and the rear end of the vibration head (3) extends into the connection port and can extend and retract relative to the connection port.
7. The water flow control method of the water purifier according to claim 6, characterized in that a shoulder part is formed on the periphery of the vibrating head (3) and a supporting spring (32) is sleeved on the periphery of the vibrating head, the shoulder part at one end of the supporting spring (32) is abutted, and the other end of the supporting spring is abutted with the front end of the excitation assembly (2).
8. The water flow control method of the water purifier according to claim 7, wherein the front end of the excitation assembly (2) is provided with a magnetic shielding ring (22) around the connecting port, and the middle part of the vibration head (3) is provided with a magnetic shielding cake (33).
9. Water purifier flow control method according to claim 4, characterized in that said frame (1) has an annular inner ring, said vibrating heads (3) are at least two,
the driving mechanism comprises
A ring gear (1b) rotatably provided on the inner ring of the frame (1) and having internal teeth formed on the inner side thereof;
at least two driven gears (2b) which are rotatably arranged on the inner side of the gear ring (1b) and are in meshed transmission connection with the internal teeth; and
one end of the connecting rod (3a) is movably connected with the driven gear (2b), and the other end is movably connected with the respective vibrating head (3).
10. The water flow control method of the water purifier according to claim 9, wherein the gear ring (1b) is rotatably arranged on the inner ring of the frame (1) through a bearing (3 b).
11. A method according to claim 3 wherein said hydraulic elastic wave generator comprises at least one hydraulic elastic wave generator
A cylinder (1 a);
a diaphragm (6a) hermetically provided inside the cylinder (1 a); the middle part of the diaphragm (6a) is provided with a hollow cavity for the first water pipe (101) to penetrate through; and
a piston rod (2a) which is arranged in the cylinder body (1a) in a way of axially moving back and forth, wherein the piston rod (2a) is in sealing fit with the inner wall of the cylinder body (1 a);
an oil chamber (11a) is formed in a region of the cylinder block (1a) between the inner end of the piston rod (2a) and the inner wall of the diaphragm (6a), and hydraulic oil is contained in the oil chamber (11 a).
12. The method as claimed in claim 11, wherein said hydraulic elastic wave generator further comprises
A frame (1);
a turntable (4a) rotatably provided on the frame (1);
one end of the connecting rod (3a) is movably connected with the turntable (4a), and the other end is movably connected with the outer end of the piston rod (2 a).
13. The water flow control method of the water purifier according to claim 11, wherein a guide sleeve (5a) is provided at a port of the cylinder (1a), and the piston rod (2a) is disposed in the guide sleeve (5a) in a penetrating manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010651798.1A CN112010439B (en) | 2020-07-08 | 2020-07-08 | Water flow control method of water purifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010651798.1A CN112010439B (en) | 2020-07-08 | 2020-07-08 | Water flow control method of water purifier |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112010439A CN112010439A (en) | 2020-12-01 |
| CN112010439B true CN112010439B (en) | 2022-04-19 |
Family
ID=73498441
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010651798.1A Active CN112010439B (en) | 2020-07-08 | 2020-07-08 | Water flow control method of water purifier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112010439B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013544641A (en) * | 2010-10-28 | 2013-12-19 | ハイドロパス、ホウルディングス、リミティド | Method and apparatus for treating fluid in a conduit at high frequency |
| CN104001689A (en) * | 2014-04-30 | 2014-08-27 | 沈孟良 | Annular magnetic ultrasonic transducer applicable to pipeline installation |
| CN106094903A (en) * | 2016-08-26 | 2016-11-09 | 曼瑞德集团有限公司 | A kind of purifier water outlet flow control system |
-
2020
- 2020-07-08 CN CN202010651798.1A patent/CN112010439B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013544641A (en) * | 2010-10-28 | 2013-12-19 | ハイドロパス、ホウルディングス、リミティド | Method and apparatus for treating fluid in a conduit at high frequency |
| CN104001689A (en) * | 2014-04-30 | 2014-08-27 | 沈孟良 | Annular magnetic ultrasonic transducer applicable to pipeline installation |
| CN106094903A (en) * | 2016-08-26 | 2016-11-09 | 曼瑞德集团有限公司 | A kind of purifier water outlet flow control system |
Non-Patent Citations (1)
| Title |
|---|
| "液体弹性波在管输系统中的应用";陈李斌等;《输送工艺》;20011231;第20卷(第4期);第11-13页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112010439A (en) | 2020-12-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101305982B1 (en) | Hydraulic actuator and hydraulic vibration test device | |
| WO2007041823A8 (en) | Method and system for optimizing downhole fluid production | |
| CN105952975A (en) | Magnetorheological vibration reducing pipe clamp | |
| JP2019534780A5 (en) | ||
| CA2510919A1 (en) | Plunger actuated pumping system | |
| CN103067818B (en) | Hydraulic driving system of underwater acoustical generator | |
| CN112010439B (en) | Water flow control method of water purifier | |
| CN102192197A (en) | Liquid injection device | |
| CN112128090B (en) | Water purifier applying elastic wave generator | |
| Chenxiao et al. | Study on vibration and noise for the hydraulic system of hydraulic hoist | |
| JP2010504448A5 (en) | ||
| CN114458718B (en) | Anti-settling magneto-rheological shock absorber for high-pressure hydraulic pipeline system and working process of shock absorber | |
| CN207378374U (en) | Liquid-filling pipe piezoelectricity liquid hinders energy accumulator | |
| CN112010438B (en) | Water flow control method of water purifier | |
| CN104475864A (en) | Vibratory saw-cutting device and method based on electro-hydraulic servo excitation | |
| JP4098614B2 (en) | Pulsation pressure amplitude control mechanism, pulsation pressure amplitude control method and pulsation generator in grouting system | |
| CN109578252A (en) | A kind of circular piezoelectric pump | |
| CN106223856B (en) | Spring valve type drilling fluid pulse generating means | |
| CN101265890A (en) | Piezoelectric hydraulic pump | |
| CN210701364U (en) | Magnetostrictive ultrasonic water jet structure | |
| CN210876010U (en) | Water flow fluctuation device | |
| CN211343839U (en) | Electroless driving frequency adjustable pressure pulsation attenuator | |
| CN208040678U (en) | A kind of bistable state inertia-type piezoelectric pump based on piezoelectric fibre composite material driving | |
| CN213125870U (en) | Flow control device based on giant magnetostrictive actuator | |
| CN101073798B (en) | Pulse vibration generator and generation method |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |