Water treatment filtering system based on ultrasound and backwashing

Abstract

An ultrasonic generator is arranged on the side wall of a shell and used for cleaning the inner wall and the outer wall of a microporous filter pipe, and a cleaning liquid inlet and a cleaning liquid outlet are formed in the upper portion and the lower portion of the shell respectively. The cleaning fluid inlet and the cleaning fluid outlet are respectively communicated with the cleaning fluid flushing device to form a cleaning fluid circulation loop, and the controller is in wireless or wired connection with the ultrasonic generator and the cleaning fluid flushing device so as to control the ultrasonic generator and the cleaning fluid flushing device. Through the combination of the ultrasonic generator and the cleaning fluid flushing device, the problem that blockages on the inner wall and the outer wall of the microporous filter pipe are difficult to remove in the prior art is effectively solved, the cleaning fluid circulation loop realizes the recycling of cleaning fluid, the use amount of the cleaning fluid is reduced, the cost is reduced, and the cleaning efficiency is improved. Intelligent management of the cleaning process is achieved through the controller, the working efficiency of the filter is improved, and the service life of the filter is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to water treatment technical field especially relates to a water treatment filtration system based on ultrasonic and backwashing. BACKGROUND

[0002] In the water treatment process, the microporous filter is one of the technologies widely used to remove impurities in water and ensure the purity of water. However, the existing water filter is prone to be blocked and covered with dirt inside and outside the filter tube and the wall surface after a long time of operation, especially the microporous filter tube with small pore size, and it is difficult for the pollutants to be effectively removed by the traditional high-pressure air flushing or conventional backwashing. These problems not only reduce the efficiency of the filter, but also increase the maintenance cost.

[0003] Chinese patent publication No. CN208799864U discloses a novel two-stage microporous filtration water treatment device, which comprises a processor box, a rotating drum is arranged at the upper part of the processor box, a microporous filter screen is arranged on the surface of the rotating drum, a flushing pipe is arranged above the rotating drum, a liquid collecting pipe is arranged below the rotating drum, one end of the liquid collecting pipe is an outlet and the other end is connected with a backwashing pipeline, a plurality of microporous filter plates are arranged on the liquid collecting pipe, a filter passage is arranged in each microporous filter plate, and the filter passage is in communication with the inner cavity of the liquid collecting pipe. The rotating drum with the microporous filter screen and the microporous filter plate realize two-stage microporous filtration and improve the filtration effect. However, the applicant finds that the following technical problems exist in the technical solution: on the one hand, the flushing liquid directly flows back after flushing the rotating drum or the microporous filter plate, and no circulation pipeline is formed, resulting in waste of the flushing liquid; on the other hand, although two layers of filters are provided, the cleaning procedures for the microporous filter screen and the microporous filter plate are cleaning and backwashing respectively, only one ultrasonic generator is arranged on one side of the microporous filter plate, the microporous filter screen, the microporous filter plate and the residual liquid collecting pipe are prone to be blocked after treating complex water with many impurities, and the cleaning effect is poor, and the automatic monitoring and control function is lacking, and too much manual operation is required during operation.

[0004] Therefore, it is particularly important to develop a filter that can effectively remove the blockage in the microporous filter tube and automatically adjust the cleaning according to the water quality conditions. UTILITY MODEL CONTENT

[0005] The utility model solves the technical problems of the prior art, and provides a water treatment filtration system based on ultrasonic and backwashing which can save flushing liquid and automatically adjust.

[0006] To solve the above technical problems, the utility model adopts the following technical scheme:

[0007] The utility model provides a water treatment filtration system based on ultrasonic and backwashing, which comprises a shell, a microporous filter tube arranged in the shell, a water inlet arranged at the lower part of the shell, and a water outlet arranged at the upper part of the shell, a controller, an ultrasonic generator arranged on the sidewall of the shell and used for cleaning the inner and outer walls of the microporous filter tube, a cleaning liquid inlet and a cleaning liquid outlet arranged at the upper and lower parts of the shell respectively, a cleaning liquid circulating loop formed by the cleaning liquid inlet and the cleaning liquid outlet in communication with a cleaning liquid flushing device, and the controller being wirelessly or wiredly connected with the ultrasonic generator and the cleaning liquid flushing device to control the ultrasonic generator and the cleaning liquid flushing device.

[0008] As a further improvement of the above technical solution,

[0009] The cleaning liquid flushing device comprises a first conveying pump and a cleaning liquid buffer tank, the first conveying pump is connected with the cleaning liquid inlet and the cleaning liquid outlet respectively and used for conveying the cleaning liquid in the cleaning liquid buffer tank to the cleaning liquid inlet to clean the microporous filter tube, and the cleaned cleaning liquid flows out through the cleaning liquid outlet.

[0010] The cleaning liquid flushing device further comprises a cleaning liquid conveying pipeline, the cleaning liquid conveying pipeline comprises a first conveying pipeline, a second conveying pipeline and a third conveying pipeline, the first conveying pipeline is used for connecting the first conveying pump and the cleaning liquid inlet, the second conveying pipeline is used for connecting the first conveying pump and the cleaning liquid outlet, and the third conveying pipeline is used for connecting the first conveying pump and the cleaning liquid buffer tank, and the first conveying pipeline, the second conveying pipeline and the third conveying pipeline are respectively provided with valves used for opening or closing the pipelines.

[0011] The water treatment filtration system comprises a liquid level monitoring member, the liquid level monitoring member comprises a second liquid level sensor arranged in the cleaning liquid buffer tank and used for monitoring the liquid level of the cleaning liquid in the cleaning liquid buffer tank, the cleaning liquid flushing device further comprises a concentration sensor used for monitoring the concentration of the cleaning liquid in the cleaning liquid buffer tank.

[0012] The cleaning liquid flushing device further comprises a cleaning liquid filtering member arranged on the second conveying pipeline.

[0013] The water treatment filtration system further comprises a second flow meter arranged on the second conveying pipeline.

[0014] The water treatment filtration system further comprises a medicament storage device, the medicament storage device comprises a second conveying pump and a medicament storage tank, and the second conveying pump is used for conveying the cleaning liquid in the medicament storage tank to the cleaning liquid buffer tank.

[0015] The liquid level monitoring member further comprises a first liquid level sensor, and the water treatment filtering system further comprises a pressure and temperature sensor, the first liquid level sensor and the pressure and temperature sensor are arranged in the shell, the first liquid level sensor is used for monitoring the liquid level in the shell, and the pressure and temperature sensor is used for monitoring the pressure and temperature in the shell.

[0016] The water treatment filtering system further comprises a grid plate, and the grid plate is arranged between the microporous filtering pipe and the water inlet in the shell.

[0017] The cleaning liquid outlet is located below the water inlet.

[0018] Compared with the prior art, the water treatment filtering system has the advantages that:

[0019] The ultrasonic generator and the cleaning liquid flushing device are combined, the problem that the blockage in the inner wall and the outer wall of the microporous filtering pipe is difficult to remove in the prior art is effectively solved, the cleaning liquid circulation loop realizes the recycling of the cleaning liquid, the use amount of the cleaning liquid is reduced, the cost is reduced, the controller is used for realizing the intelligent management of the cleaning process, the working efficiency and the service life of the filter are improved, and the manual operation is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a structural schematic view of the utility model.

[0021] In the drawing, various reference numerals represent:

[0022] 1, shell; 10, cleaning liquid outlet; 11, cleaning liquid filtering member; 12, medicament storage device; 121, second conveying pump; 122, medicament storage tank; 14, flow monitoring member; 141, first flow meter; 142, second flow meter; 15, liquid level monitoring member; 151, first liquid level sensor; 152, second liquid level sensor; 153, third liquid level sensor; 16, pressure and temperature sensor; 17, exhaust port; 18, concentration sensor; 19, fourth valve; 2, ultrasonic generator; 20, controller; 25, cleaning liquid conveying pipeline; 251, first conveying pipeline; 252, second conveying pipeline; 253, third conveying pipeline; 3, water inlet pump; 41, water inlet; 42, water outlet; 5, grid plate; 6, slag discharge port; 7, cleaning liquid buffer tank; 8, first conveying pump; 30, microporous filtering pipe. DETAILED DESCRIPTION

[0023] The utility model will be further explained in detail. Unless otherwise specified, the instruments or materials used in the utility model are commercially available.

[0024] In the description of the utility model, it is understood that the terms "upper", "lower", "front", "rear", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.

[0025] In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or more of the features. In the description of the utility model, the meaning of "multiple" is two or more than two, unless otherwise specifically limited.

[0026] In the utility model, unless otherwise specifically defined and limited, the terms "connected", "connected", "fixed" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship of two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific situation.

[0027] As shown in Figure 1 The ultrasonic and backwashing based water treatment filtration system of the embodiment comprises a shell 1, a microporous filter pipe 30 is arranged in the shell 1, a water inlet 41 and a water outlet 42 are arranged at the lower part and the upper part of the shell 1 respectively, the water treatment filtration system further comprises a controller 20, an ultrasonic generator 2 and a cleaning liquid flushing device, the ultrasonic generator 2 is arranged on the side wall of the shell 1 and is used for cleaning the inner and outer walls of the microporous filter pipe 30, a cleaning liquid inlet and a cleaning liquid outlet 10 are arranged at the upper part and the lower part of the shell 1 respectively, the cleaning liquid inlet and the cleaning liquid outlet 10 are connected with the cleaning liquid flushing device to form a cleaning liquid circulation loop, and the controller 20 is wirelessly or wiredly connected with the ultrasonic generator 2 and the cleaning liquid flushing device to control the ultrasonic generator 2 and the cleaning liquid flushing device. The combination of the ultrasonic generator 2 and the cleaning liquid flushing device effectively solves the problem that the blockages in the inner and outer walls of the microporous filter pipe 30 are difficult to remove in the prior art, the cleaning liquid circulation loop realizes the recycling of the cleaning liquid, reduces the use amount of the cleaning liquid, reduces the cost, the intelligent management of the cleaning process is realized through the controller 20, the working efficiency and the service life of the filter are improved, and the manual operation is reduced. The utility model is not only suitable for cleaning work under various water quality conditions, but also has good economy and environmental protection benefits, and has broad application prospect.

[0028] In this embodiment, the shell 1 is made of corrosion-resistant material, and the outer side wall of the shell 1 is completely covered by a wave-absorbing shielding material layer except for the part where the ultrasonic generator 2 is installed. The wave-absorbing shielding material layer is composed of a through-hole material and irregularly shaped inorganic resonators. The through-hole material is composed of one or more fiber materials or foamed cotton, and the inorganic resonators are composed of at least one metal or metal oxide. The inorganic resonators are in the form of particles or sheets with a particle size of less than 5 mm, or in the form of columns or wires with a diameter of less than 5 mm. The total volume of the inorganic resonators is 5% to 40% of the total volume of the through-hole material.

[0029] The micro-porous filter tube 30 is installed inside the shell 1 for filtering impurities in water. The pore size of the micro-porous filter tube 30 is 0.2 to 1 microns, and the number and size can be adjusted according to actual needs. The material of the micro-porous filter tube 30 includes but is not limited to polyethylene, polytetrafluoroethylene, polyamide, ceramic, stainless steel, etc.

[0030] The ultrasonic generator 2 is installed on the side wall of the shell 1 for emitting ultrasonic waves to help remove blockages on the inner and outer walls of the micro-porous filter tube 30. In this embodiment, multiple ultrasonic generators 2 are uniformly arranged along the circumferential side wall of the shell 1, and the ultrasonic generators 2 are located outside the micro-porous filter tube 30. Through the arrangement of multiple ultrasonic generators 2, ultrasonic cleaning is performed in multiple directions of the micro-porous filter tube 30, which improves the efficiency of ultrasonic cleaning compared to the technical solution with only one ultrasonic generator 2.

[0031] A water inlet pump 3 is provided on the connecting pipeline between the water inlet 41 and the shell 1 for adjusting the amount of raw water and improving the water permeability. The water inlet 41 and the water outlet 42 are respectively used for the entry of raw water and the discharge of clean water. Valves are respectively provided on the water inlet 41 and the water outlet 42 for controlling the opening or closing of the water inlet 41 and the water outlet 42. The valve on the water outlet 42 is referred to as the eighth valve.

[0032] In this embodiment, the cleaning liquid inlet and the cleaning liquid outlet 10 are respectively arranged at the top and the bottom of the shell 1 for the recycling of the cleaning liquid.

[0033] The cleaning liquid flushing device includes a first delivery pump 8 and a cleaning liquid buffer tank 7. The first delivery pump 8 is connected to the cleaning liquid inlet and the cleaning liquid outlet 10 and used to deliver the cleaning liquid in the cleaning liquid buffer tank 7 to the cleaning liquid inlet to clean the micro-porous filter tube 30. The cleaned cleaning liquid flows out through the cleaning liquid outlet 10. In this embodiment, the first delivery pump 8 is a high-pressure pump located outside the shell 1 and connected to the upper and lower ends of the shell 1 through pipelines for pumping and circulating the cleaning liquid in the shell 1 to realize the backwashing function. The cleaning liquid buffer tank 7 is used to store the cleaning liquid.

[0034] The utility model discloses a combination of ultrasonic cleaning and backwash technology, and through the controller 20 realizes the effective removal of the dirt in the hole of micro -pore filter pipe 30 and the dirt on the inner and outer wall. Ultrasonic cleaning technology converts acoustic energy into mechanical vibration, with the shell 1 inside being a cleaning tank, and the ultrasonic wave is radiated into the cleaning liquid in the cleaning tank by the side wall of the cleaning tank, so that the micro-bubbles in the liquid keep vibrating under the action of the sound wave. The vibration of these micro-bubbles produces ultrasonic cavitation effect in the cleaning tank. When the sound pressure or sound intensity reaches a certain level, the bubbles will expand rapidly and close suddenly, producing instantaneous high pressure (up to 1012-1013 Pa) and local high temperature. The huge pressure produced by this cavitation effect can destroy insoluble dirt, making it decompose and disperse in the cleaning liquid. At the same time, the micro-bubble vibration caused by the ultrasonic wave scrubs the surface of the micro -pore filter pipe 30, destroys the adsorption of dirt and the surface of the micro -pore filter pipe 30, and causes the fatigue failure of the dirt layer and is stripped. In addition, the ultrasonic wave produces positive and negative alternating sound pressure when propagating in the cleaning liquid, forms jet impact cleaning parts, and due to the nonlinear effect, also produces acoustic flow and micro acoustic flow. These effects can destroy dirt, remove or weaken the boundary dirt layer, increase the stirring and diffusion effect, accelerate the dissolution of soluble dirt, and strengthen the cleaning effect of the chemical cleaning liquid. The utility model draws the cleaning liquid from the cleaning liquid buffer groove 7 through the first delivery pump 8 and enters the shell 1 through the cleaning liquid inlet, and then is discharged back to the cleaning liquid buffer groove 7 through the cleaning liquid outlet 10. This process effectively removes the blockage on the inner and outer walls of the micro -pore filter pipe 30. Backwash combined with ultrasonic cleaning not only improves the cleaning efficiency, but also avoids the problem that single cleaning method is difficult to completely remove the blockage on the inner and outer walls of the micro -pore filter pipe 30. Backwash through the impact force of high-pressure water flow, combined with the cavitation effect of ultrasonic cleaning, acts on the dirt on the inner and outer walls of the micro -pore filter pipe 30, so that the dirt is more easily stripped and carried away by the cleaning liquid.

[0035] In the embodiment, the cleaning liquid flushing device further comprises a cleaning liquid conveying pipeline 25, the cleaning liquid conveying pipeline 25 comprises a first conveying pipeline 251, a second conveying pipeline 252 and a third conveying pipeline 253, the first conveying pipeline 251 is used for connecting the first conveying pump 8 and the cleaning liquid inlet, the second conveying pipeline 252 is used for connecting the first conveying pump 8 and the cleaning liquid outlet 10, and the third conveying pipeline 253 is used for connecting the first conveying pump 8 and the cleaning liquid buffer tank 7. The first conveying pipeline 251, the second conveying pipeline 252 and the third conveying pipeline 253 are respectively provided with valves used for opening or closing the pipelines, the valves on the first conveying pipeline 251, the second conveying pipeline 252 and the third conveying pipeline 253 are respectively referred to as a first valve, a second valve and a third valve. When flushing is needed, the first valve and the third valve are opened, and the second valve is closed, so that the first conveying pump 8 draws the cleaning liquid in the cleaning liquid buffer tank 7 and conveys the cleaning liquid into the shell 1. When cleaning is not needed, the first valve is closed, and the second valve and the third valve are opened, so that the cleaning liquid in the shell 1 is conveyed into the cleaning liquid buffer tank 7, and the cleaning liquid is recycled.

[0036] The water treatment filtering system comprises a liquid level monitoring member 15, the liquid level monitoring member 15 comprises a second liquid level sensor 152, the second liquid level sensor 152 is located in the cleaning liquid buffer tank 7 and is used for monitoring the liquid level of the cleaning liquid in the cleaning liquid buffer tank 7. The cleaning liquid flushing device further comprises a concentration sensor 18, the concentration sensor 18 is used for monitoring the concentration of the cleaning liquid in the cleaning liquid buffer tank 7.

[0037] In the embodiment, the cleaning liquid flushing device further comprises a cleaning liquid filtering member 11, the cleaning liquid filtering member 11 is arranged on the second conveying pipeline 252. The cleaning liquid filtering member 11 is one or more microporous filters, which facilitates to improve the purity of the cleaning liquid when the cleaning liquid is recycled.

[0038] In the embodiment, the water treatment filtering system further comprises a flow monitoring member 14, the flow monitoring member 14 comprises a second flow meter 142, the second flow meter 142 is arranged on the second conveying pipeline 252 and is used for monitoring the backwashing flow.

[0039] In the embodiment, the water treatment filtering system further comprises a medicament storage device 12, the medicament storage device 12 comprises a second conveying pump 121 and a medicament storage tank 122, the second conveying pump 121 is used for conveying the cleaning liquid in the medicament storage tank 122 to the cleaning liquid buffer tank 7. The second conveying pump 121 can accurately control the addition amount of the cleaning medicament, and ensures that the cleaning liquid concentration value of the cleaning liquid in the cleaning liquid buffer tank 7 is in an optimal state. The liquid level monitoring member 15 comprises a third liquid level sensor 153, the third liquid level sensor 153 is located in the medicament storage tank 122 and is used for monitoring the liquid level of the cleaning liquid in the medicament storage tank 122. The medicament storage tank 122 and the second conveying pump 121 are connected through a pipeline, and a valve (referred to as a seventh valve) is arranged on the pipeline.

[0040] The water level monitoring member 15 further comprises a first liquid level sensor 151, and the water treatment filtration system further comprises a pressure and temperature sensor 16, the first liquid level sensor 151 and the pressure and temperature sensor 16 are arranged in the shell 1, the first liquid level sensor 151 is used for monitoring the liquid level in the shell 1, and the pressure and temperature sensor 16 is used for monitoring the pressure and temperature in the shell 1.

[0041] In the embodiment, the water treatment filtration system further comprises a grid plate 5, the grid plate 5 is located in the shell 1 and is arranged between the microporous filter pipe 30 and the water inlet 41, and the grid plate 5 is used for filtering larger particles.

[0042] A fourth valve 19 for opening or closing the pipeline is arranged on the pipeline between the water inlet 41 and the shell 1.

[0043] In the embodiment, the cleaning liquid outlet 10 is located below the water inlet 41.

[0044] The shell 1 is provided with an exhaust port 17 at the top and a fifth valve is arranged at the exhaust port 17, the fifth valve is opened or closed when the exhaust port 17 needs to be opened or closed, and the shell 1 is provided with a residue discharge port 6 at the bottom, and a valve (referred to as a sixth valve) is arranged at the residue discharge port 6 and used for periodically discharging impurities at the bottom of the shell 1.

[0045] In the embodiment, the controller 20 is used for receiving data from the first flow meter 141 and the second flow meter 142, the first liquid level sensor 151, the second liquid level sensor 152 and the third liquid level sensor 153, the concentration sensor 18 and the pressure and temperature sensor 16, and automatically controlling the start and stop of related equipment according to a set threshold condition.

[0046] The controller 20 adjusts the frequency of the water inlet pump 3 to increase the flow according to the data of the first flow meter 141 when the water permeability is lower than a preset value.

[0047] Further, when the frequency of the water inlet pump 3 is increased to the highest value and still cannot make the water permeability reach the preset value, the controller 20 starts the backwashing program.

[0048] The use process of the utility model is as follows:

[0049] 1. When the system is in an initial state: the system is in standby mode, all equipment is closed, the water inlet pump 3 is running, raw water enters from the water inlet 41, larger particles are filtered through the grid plate 5 and the microporous filter pipe 30, and clean water is discharged from the water outlet 42. The sixth valve at the residue discharge port 6 is opened periodically to discharge the residue at the bottom of the shell 1.

[0050] 2. When water permeability monitoring and pump frequency adjustment are needed: the first flow meter 141 continuously monitors the water permeability of the filter, and when the water permeability is lower than a preset value, such as 80%, the controller 20 adjusts the frequency of the water inlet pump 3 to increase the flow.

[0051] 3. If the water inlet pump 3 frequency is raised to the maximum value and still cannot make the permeation rate reach the preset value, the controller 20 starts the backwashing program, including the following steps:

[0052] S1: Close the fourth valve at the water inlet pump 3 and the eighth valve at the water outlet 42, and discharge the water in the shell 1 from the filter water inlet 41;

[0053] S2: After the first liquid level sensor 151 detects that the water in the shell 1 is completely discharged, the fourth valve 19 at the water inlet 41 is closed, the third valve at the cleaning liquid buffer tank 7 and the backwashing direction valve (first valve) are opened, and the first delivery pump 8 is started to draw cleaning liquid from the cleaning liquid buffer tank 7 into the shell 1 through the cleaning liquid inlet at the top of the shell 1;

[0054] S3: When the first liquid level sensor 151 detects that the cleaning liquid in the shell 1 reaches the predetermined liquid level, the cleaning liquid buffer tank 7 valve is closed, the second valve at the bottom of the shell 1 is opened, and the cleaning liquid flows out from the cleaning liquid outlet 10 at the bottom of the shell 1 and is filtered through the cleaning liquid filter 11, and the cleaning liquid circulates to remove the blockage on the inner and outer walls of the micro-porous filter tube 30 by high-pressure water flow impact;

[0055] S4: The second flow meter 142 continuously monitors the backwashing flow, and when the backwashing flow value is lower than the preset value such as 80%, the controller 20 adjusts the frequency of the first delivery pump 8 to increase the flow.

[0056] 4. When the first delivery pump 8 frequency is raised to the maximum value in the backwashing program and still cannot make the backwashing flow value reach the preset value, the controller 20 starts the ultrasonic soaking program, including:

[0057] S1: Close the first backwashing direction valve, open the third valve at the cleaning liquid buffer tank 7, and the first delivery pump 8 draws cleaning liquid from the cleaning liquid buffer tank 7 into the shell 1 through the cleaning liquid outlet 10 at the bottom of the shell 1;

[0058] S2: When the first liquid level sensor 151 detects that the cleaning liquid in the shell 1 reaches the predetermined liquid level, the first delivery pump 8 is closed, the third valve at the cleaning liquid buffer tank 7 and the second valve at the bottom of the shell 1 are closed, and the ultrasonic generator 2 is opened to radiate ultrasonic waves into the cleaning liquid in the cleaning tank through the side wall of the cleaning tank, so that the micro-bubbles in the liquid are kept vibrating under the action of the sound waves;

[0059] S3: Ultrasonic immersion for a predetermined time, the ultrasonic generator 2 generates ultrasonic waves through the side wall of the shell 1 to the cleaning liquid, so that the micro-bubbles in the liquid keep vibrating under the action of the sound wave. These micro-bubbles under the action of the sound wave, ultrasonic cavitation effect, when the sound pressure or sound intensity reaches a certain level, the bubble will expand rapidly and close suddenly, producing a transient high pressure up to 1012-1013 Pa and local high temperature. The huge pressure generated by this cavitation effect can destroy insoluble dirt, making it decompose and disperse in the cleaning liquid. At the same time, the micro-bubble vibration caused by the ultrasonic wave can scrub the surface of the microporous filter tube 30, destroy the adsorption of the dirt on the surface of the microporous filter tube 30, and cause the fatigue failure of the dirt layer to be peeled off;

[0060] S4: After the ultrasonic immersion for a predetermined time, the ultrasonic generator 2 is turned off, the second valve at the bottom of the shell 1 and the first valve in the backwashing direction are opened, and the first conveying pump 8 is started to enter the cleaning liquid backwashing cycle for a predetermined time;

[0061] S5: The second flow meter 142 continuously monitors the backwashing flow, and when the backwashing flow value is lower than the preset value such as 80%, the controller 20 reports an error, the first conveying pump 8 is turned off, and the staff is prompted to repair and manually operate.

[0062] 5. Temperature and pressure monitoring and control: The pressure and temperature sensor 16 monitors the temperature and pressure of the shell 1 during the cleaning process. When the temperature and pressure are higher than the preset value, the controller 20 opens the fifth valve at the exhaust port 17 to control the pressure and temperature of the shell 1.

[0063] 6. Drug concentration monitoring and adjustment: The concentration sensor 18 detects the cleaning liquid concentration value of the cleaning liquid in the cleaning liquid buffer tank 7. If the cleaning liquid concentration value deviates from the specified range, the controller 20 opens the seventh valve at the drug storage tank 122, starts the second conveying pump 121 to extract the drug in the drug storage tank 122 and adds it to the cleaning liquid buffer tank 7 to adjust the cleaning liquid concentration value to the predetermined range, and then closes the seventh valve at the drug storage tank 122 and the second conveying pump 121. The second liquid level sensor 152 and the third liquid level sensor 153 respectively monitor the liquid level values of the cleaning liquid buffer tank 7 and the drug storage tank 122, and when the liquid level value is lower than the specified range, the controller 20 reports an error and prompts the staff to manually add.

[0064] 7. Microporous filter tube 30 cleaning is completed: the first conveying pump 8 and the first valve in the backwashing direction are closed, the cleaning liquid is discharged back to the cleaning liquid buffer tank 7 through the cleaning liquid outlet 10 at the bottom of the shell 1. After the first liquid level sensor 151 detects that the cleaning liquid in the shell 1 is completely discharged, the fourth valve at the filter water inlet 41 and the eighth valve at the water outlet 42 are opened to restore normal operation.

[0065] 8. Reset system: the controller 20 resets the monitoring system, ready for the next cleaning procedure.

[0066] The cleaning principle of the utility model is based on the combination of ultrasonic cleaning and high-pressure backwashing. The ultrasonic waves generated by the ultrasonic generator 2 are radiated into the cleaning liquid through the side wall of the shell 1, so that the micro-bubbles in the cleaning liquid keep vibrating under the action of the sound waves. These micro-bubbles rapidly expand and suddenly close under the action of the sound waves, generating a transient high pressure of up to 1012-1013 Pa and a local high temperature, forming an ultrasonic cavitation effect. The huge pressure generated by this cavitation effect can destroy insoluble dirt, allowing it to decompose and disperse in the cleaning liquid. At the same time, the micro-bubble vibration caused by the ultrasonic waves performs scrubbing on the solid surface, destroys the adsorption of the dirt on the surface of the micro-porous filter tube 30, and causes the fatigue failure of the dirt layer to be peeled off. High-pressure backwashing uses the impact force of high-pressure water flow, combined with the cavitation effect of ultrasonic cleaning, to act on the dirt on the inner and outer pore walls of the micro-porous filter tube 30, making it easier for the dirt to be peeled off and carried away by the cleaning liquid.

[0067] The automatic control system of the utility model includes a controller 20, a flow monitoring element 14, a liquid level monitoring element 15, a pressure temperature sensor 16, a concentration sensor 18, first to seventh valves, a second delivery pump 121 and a medicament storage tank 122. The controller 20 receives data from the flow monitoring element 14, the liquid level monitoring element 15, the pressure temperature sensor 16 and the concentration sensor 18, and automatically controls the start and stop of related equipment according to the set threshold conditions.

[0068] If the water inlet pump 3 frequency is raised to the maximum value and still cannot make the water permeability reach the preset value, the controller 20 will start the backwashing program, including closing the fourth valve 19 of the water inlet pump 3 and the filter water inlet 41, starting the first delivery pump 8 to draw cleaning liquid from the cleaning liquid buffer tank 7 into the shell 1, and when detecting that the cleaning liquid in the shell 1 reaches the predetermined liquid level, closing the third valve between the cleaning liquid buffer tank 7 and the first delivery pump 8, opening the second valve between the cleaning liquid outlet 10 at the bottom of the shell 1 and the first delivery pump 8 to make the cleaning liquid flow out, and removing the blockage by high-pressure water flow.

[0069] When the first delivery pump 8 frequency is raised to the highest value and still cannot make the backwash flow value reach the preset value, the controller 20 starts the ultrasonic soaking program, closes the backwash direction valve (the first valve), opens the third valve between the cleaning liquid buffer tank 7 and the first delivery pump 8, extracts the cleaning liquid from the cleaning liquid buffer tank 7 into the shell 1, closes the third valve between the first delivery pump 8 and the cleaning liquid buffer tank 7 after reaching the predetermined liquid level, and opens the ultrasonic generator to perform ultrasonic soaking. After a predetermined time of ultrasonic soaking, the ultrasonic generator 2 is closed, the second valve at the bottom of the shell 1 and the backwash direction valve (the first valve) are opened, and the cleaning liquid backwash cycle for a predetermined time is entered. If the backwash flow value is still lower than the preset value at this time, the controller 20 reports an error, closes the first delivery pump 8, and prompts the staff to repair and manually operate.

[0070] When the pressure temperature sensor 16 detects that the temperature and pressure are higher than the preset value, the controller 20 opens the fifth valve at the exhaust port 17 to control the pressure and temperature in the shell 1. When the concentration sensor 18 detects that the medicament concentration value of the cleaning liquid in the cleaning liquid buffer tank 7 exceeds the specified range, the second delivery pump 121 is started and the medicament concentration value is adjusted to the target range through the medicament storage tank 122. When the second liquid level sensor 152 and the third liquid level sensor 153 respectively detect that the liquid level values of the cleaning liquid buffer tank 7 and the medicament storage tank 122 are lower than the specified range, the controller 20 reports an error and prompts the staff to manually add. This automatic control mechanism not only simplifies the operation process and reduces the need for manual intervention, but also improves the intelligent level of the system and the consistency of the cleaning effect.

[0071] The utility model has disclosed as above with preferable embodiment, however not use to limit the utility model. Any skilled person in the art, without departing from the technical scheme range of the utility model, can utilize the technical content disclosed above to make many possible changes and modifications to the utility model technical scheme, or modify as equivalent change equivalent embodiment. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the utility model technical scheme, all should fall within the protection scope of the utility model technical scheme.

Claims

1. A water treatment filtration system based on ultrasonic and backwash, comprising a shell (1), a microporous filter tube (30) arranged in the shell (1), a water inlet (41) and a water outlet (42) arranged at the lower and upper parts of the shell (1) respectively, characterized in that: the water treatment filtration system further comprises a controller (20), an ultrasonic generator (2) and a cleaning liquid flushing device, the ultrasonic generator (2) is arranged on the side wall of the shell (1) and used for cleaning the inner and outer walls of the microporous filter tube (30), the upper and lower parts of the shell (1) are respectively provided with a cleaning liquid inlet and a cleaning liquid outlet (10), the cleaning liquid inlet and the cleaning liquid outlet (10) are connected with the cleaning liquid flushing device to form a cleaning liquid circulation loop, and the controller (20) is wirelessly or wiredly connected with the ultrasonic generator (2) and the cleaning liquid flushing device to control the ultrasonic generator (2) and the cleaning liquid flushing device. The cleaning liquid flushing device comprises a first conveying pump (8) and a cleaning liquid buffer tank (7), the first conveying pump (8) is connected with the cleaning liquid inlet and the cleaning liquid outlet (10) respectively and used for conveying the cleaning liquid in the cleaning liquid buffer tank (7) to the cleaning liquid inlet to clean the microporous filter tube (30), and the cleaned cleaning liquid flows out through the cleaning liquid outlet (10).

2. The water treatment filtration system of claim 1, wherein: The cleaning liquid flushing device further comprises a cleaning liquid conveying pipeline (25), the cleaning liquid conveying pipeline (25) comprises a first conveying pipeline (251), a second conveying pipeline (252) and a third conveying pipeline (253), the first conveying pipeline (251) is used for connecting the first conveying pump (8) and the cleaning liquid inlet, the second conveying pipeline (252) is used for connecting the first conveying pump (8) and the cleaning liquid outlet (10), and the third conveying pipeline (253) is used for connecting the first conveying pump (8) and the cleaning liquid buffer tank (7), the first conveying pipeline (251), the second conveying pipeline (252) and the third conveying pipeline (253) are respectively provided with valves for opening or closing the pipelines.

3. The water treatment filter system of claim 2, wherein: The water treatment filtration system comprises a liquid level monitoring member (15), the liquid level monitoring member (15) comprises a second liquid level sensor (152) arranged in the cleaning liquid buffer tank (7) and used for monitoring the liquid level of the cleaning liquid in the cleaning liquid buffer tank (7), the cleaning liquid flushing device further comprises a concentration sensor (18) used for monitoring the concentration of the cleaning liquid in the cleaning liquid buffer tank (7).

4. The water treatment filter system of claim 2, wherein: The cleaning liquid flushing device further comprises a cleaning liquid filtering member (11) arranged on the second conveying pipeline (252).

5. The water treatment filter system of claim 3, wherein: The water treatment filtration system further comprises a second flow meter (142) arranged on the second conveying pipeline (252).

6. The water treatment filtration system of claim 3, wherein: ​ 7. The water treatment filter system of claim 2, wherein: The water treatment filtering system further comprises a medicament storage device (12), the medicament storage device (12) comprises a second conveying pump (121) and a medicament storage tank (122), the second conveying pump (121) is used for conveying the cleaning liquid in the medicament storage tank (122) to the cleaning liquid buffer tank (7).

8. The water treatment filtration system of claim 4, wherein: The liquid level monitoring member (15) further comprises a first liquid level sensor (151), and the water treatment filtering system further comprises a pressure and temperature sensor (16), the first liquid level sensor (151) and the pressure and temperature sensor (16) are arranged in the shell (1), the first liquid level sensor (151) is used for monitoring the liquid level in the shell (1), and the pressure and temperature sensor (16) is used for monitoring the pressure and temperature in the shell (1).

9. The water treatment filtration system of claim 1, wherein: The water treatment filtering system further comprises a grid plate (5), the grid plate (5) is located in the shell (1) and is arranged between the microporous filtering pipe (30) and the water inlet (41).

10. The water treatment filtration system of claim 1, wherein: The cleaning liquid outlet (10) is located below the water inlet (41).

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