RO (Reverse Osmosis) membrane filter element capable of automatically shaking to remove impurities

Abstract

The present invention relates to the technical field of membrane separation, and discloses an automatic shaking impurity removal RO membrane filter element, the automatic shaking impurity removal RO membrane filter element comprises a mounting assembly, the mounting assembly comprises a main shell, and the rear end of the main shell is provided with a raw water inlet. When the permanent magnet rises to the pressure induction cavity at the bottom of the piezoelectric vibration piece, the permanent magnet is close to the resonance connecting frame at the bottom of the electromagnetic driver, in the approaching process of the permanent magnet, the relative distance between the permanent magnet and the electromagnetic coil set is reduced, and the magnetic flux penetrating through the electromagnetic coil set is gradually increased; the amplified signal is input to a comparator or a threshold switching circuit, when the signal strength exceeds a preset threshold, the circuit outputs a high level to activate the piezoelectric ceramic driving module, the piezoelectric vibrating reed deforms under the action of an alternating electric field, the vibration frequency is consistent with the frequency of the driving voltage, and the driving voltage is switched on. A high-frequency electric signal (such as kHz-MHz) output by the control circuit enables the piezoelectric vibrating reed to generate high-frequency mechanical vibration, and the generated high-frequency vibration is transmitted to the RO membrane filter element, so that impurities in the membrane are shaken off under the action of vibration.

Description

Technical Field

[0001] The present invention relates to the technical field of membrane separation, and particularly relates to an RO membrane filter element capable of automatically jittering to remove impurities. Background Art

[0002] With the acceleration of the urbanization process and the growth of the population, the requirements for the quality and output of municipal water supply are continuously increasing. The traditional water supply treatment process is difficult to meet the increasingly strict water quality standards, while the RO membrane filter element technology can effectively remove various pollutants in water and provide high-quality drinking water. Therefore, it is more and more widely used in the field of municipal water supply;

[0003] Among them, the "RO membrane filter element" disclosed in the publication number "CN103687662B" has solved the deficiencies that the existing RO membrane filter element may have a relatively low initial permeation flux efficiency, resulting in various drawbacks of the deterioration of the water purification function. After further retrieval, it is found that the "RO membrane filter element group" disclosed in the publication number "CN115025619B" effectively solves the problem of using it when the idle time is short and performing internal maintenance through formaldehyde solution or NaHSO3 aqueous solution. However, during the maintenance process, the cleaning solution mainly enters the RO membrane filter element by osmosis, and there are technical drawbacks such as slow solution penetration, which increases the penetration time. However, in actual use, RO membrane filter elements with similar structures still have many defects. For example, the existing RO membrane filter element may have unreasonable structures in the pure water collection and export structures. For example, it may lack an effective water flow guiding structure, resulting in the inability to efficiently collect water molecules under pressure. This may be due to the poor design of the central water guide pipe structure or the lack of a dedicated water trough structure, resulting in low separation efficiency of pure water. The produced pure water may be mixed with incompletely separated impurities, and the water quality cannot reach higher standards. At the same time, during the operation of the existing RO membrane filter element, the membrane surface is easily attached and accumulated with pollutants, resulting in a decrease in membrane flux and filtration efficiency, and frequent chemical cleaning or membrane element replacement is required. Therefore, it is necessary to design an RO membrane filter element capable of automatically jittering to remove impurities. Summary of the Invention

[0004] To solve the above technical problems, the present invention provides an RO membrane filter element capable of automatically jittering to remove impurities.

[0005] The present invention is implemented by the following technical solutions: An RO membrane filter element capable of automatically jittering to remove impurities includes an installation component. The installation component includes a main housing. A raw water inlet is provided at the rear end of the main housing, and a concentrated water discharge port is provided at the front end of the main housing. A central water guide pipe is fixedly installed at the central position inside the main housing through a partition. It further includes:

[0006] A filtering component, the filtering component includes an RO membrane filter element sleeved on the outer surface of the central water guide pipe;

[0007] Sealing assembly, the sealing assembly includes a mounting bracket fixedly installed on the outer surface of the main housing, and an annular sealing ring is fixedly installed on the inner wall of the mounting bracket;

[0008] Vibration assembly, the vibration assembly includes an electromagnetic drive motor fixedly installed on the top of the mounting bracket through a vibration substrate, and a piezoelectric vibration piece is arranged at the output end of the electromagnetic drive motor.

[0009] As a further improvement of the above solution, a partition is fixedly installed on the inner wall of the main housing, and a central water guide pipe is fixedly installed at the central position of the partition.

[0010] Through the above technical solution, the installation of the central water guide pipe in the main housing is more stable. The partition plays a role in supporting and positioning the central water guide pipe, ensuring that the central water guide pipe will not displace during the entire filtration process, thereby guaranteeing the stability of the RO membrane filter element filtration work and providing a stable structural basis for subsequent processes such as pure water collection.

[0011] As a further improvement of the above solution, a water through groove is opened on the outer surface of the central water guide pipe, and a pure water outlet is opened at the front end of the central water guide pipe.

[0012] Through the above technical solution, the existence of the water through groove enables the pure water filtered by the RO membrane filter element to smoothly flow into the interior of the central water guide pipe. The pure water outlet provides a dedicated outflow channel for the pure water, facilitating the collection and subsequent utilization of the filtered pure water, improving the efficiency of pure water collection, and making the flow path of the pure water clearer and more orderly.

[0013] As a further improvement of the above solution, a permanent magnet is fixedly installed on the top of the RO membrane filter element, and the permanent magnet is matched with the piezoelectric vibration piece.

[0014] Through the above technical solution, during the operation of the RO membrane filter element, when impurities accumulate in the membrane and cause the membrane to expand, the permanent magnet at the top will move with the deformation of the membrane. Since the permanent magnet is matched with the piezoelectric vibration piece, this structure lays the foundation for triggering the piezoelectric vibration piece to generate vibration by the movement of the permanent magnet subsequently, thereby realizing the association between the impurity accumulation situation and the vibration impurity removal mechanism, which is beneficial to automatically detecting impurity accumulation and timely starting the impurity removal operation.

[0015] As a further improvement of the above solution, a pressure sensing cavity is opened at the bottom of the piezoelectric vibration piece, and the pressure sensing cavity corresponds to the permanent magnet.

[0016] Through the above technical solution, the design of the pressure sensing cavity enables the permanent magnet to accurately interact with the piezoelectric vibrating piece when it rises to a specific position driven by the expansion of the RO membrane filter element. This precise correspondence helps to improve the accuracy of impurity detection and vibration triggering, avoid false triggering or untimely triggering, ensure that the vibration impurity removal operation can be started at the appropriate time, and improve the impurity removal effect and the working efficiency of the entire RO membrane filter element device.

[0017] As a further improvement of the above solution, a sealing base is fixedly installed on the outer surface of the mounting frame, a sealing cavity is opened inside the mounting frame, and an annular sealing ring is fixedly installed on the inner wall of the sealing cavity.

[0018] Through the above technical solution, the design of the sealing cavity and the annular sealing ring effectively prevents water from leaking at the connection between the RO membrane filter element and the main housing during the filtration process. This helps to maintain the pressure stability in the filtration system, ensure the normal progress of the filtration process, and at the same time avoid the waste of water resources and possible damage to the equipment.

[0019] As a further improvement of the above solution, a vibration substrate is threadedly connected to the top of the sealing base, an electromagnetic drive motor is fixedly installed on the top of the vibration substrate, and a resonance connection frame is fixedly installed at the bottom of the electromagnetic drive motor.

[0020] Through the above technical solution, the threaded connection method between the sealing base and the vibration substrate enables the vibration component to be stably installed on the sealing component. This installation method is convenient for installation and disassembly, which is beneficial to the maintenance and repair of the equipment. The electromagnetic drive motor is connected to other components through the resonance connection frame, providing a stable structural support for the normal operation of the electromagnetic drive motor, ensuring that it can accurately drive the piezoelectric vibrating piece to generate vibration.

[0021] As a further improvement of the above solution, an electromagnetic coil group is fixedly connected inside the resonance connection frame, and a piezoelectric vibrating piece is fixedly installed at the bottom of the resonance connection frame.

[0022] Through the above technical solution, when the permanent magnet approaches, an induced current will be generated in the electromagnetic coil group. This induced current is an important signal source for triggering the subsequent circuit to control the piezoelectric vibrating piece to generate vibration. The piezoelectric vibrating piece is fixedly installed on the resonance connection frame and can accurately receive the drive signal converted from the current signal generated by the electromagnetic coil group, so as to generate high-frequency mechanical vibration, effectively remove impurities in the RO membrane filter element, and improve the filtration performance and service life of the RO membrane filter element.

[0023] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0024] In the present invention, wastewater enters from the raw water inlet at the rear end of the main shell, and the partition plays a role in the installation of the central water pipe. This structure provides a basic water flow entry channel and internal structure support for the subsequent filtration process. When wastewater enters, the layout of the partition and the central water pipe allows the water to smoothly reach the periphery of the RO membrane filter element. Under the action of pressure, water molecules use the water groove on the outer surface of the central water pipe to flow into the central water pipe, and then discharge pure water from the clean water outlet along the central water pipe. In this process, the structure of the central water pipe and the water groove works together to realize the collection and export of pure water, and achieve the separation of pure water from wastewater.

[0025] The present invention, as the filtration proceeds, the increase of impurities in the RO membrane filter element causes the membrane to continue to expand. Since a permanent magnet is fixed on the top of the RO membrane filter element, the expansion of the membrane drives the permanent magnet to rise. When the permanent magnet rises to the pressure sensing cavity at the bottom of the piezoelectric vibrating plate, the permanent magnet approaches the resonant connecting frame at the bottom of the electromagnetic driver. In the process of the permanent magnet approaching, the relative distance between the permanent magnet and the electromagnetic coil group decreases, and the magnetic flux passing through the electromagnetic coil group gradually increases. According to Faraday's law of electromagnetic induction, the change of magnetic flux generates an induced current in the electromagnetic coil group fixedly connected inside the resonant connecting frame, and the amplified signal is input to the comparator or the threshold switch circuit. When the signal strength exceeds the preset threshold, the circuit outputs a high level, activates the piezoelectric ceramic drive module, and the piezoelectric vibrating plate is deformed under the action of the alternating electric field, and its vibration frequency is consistent with the driving voltage frequency. The high-frequency electrical signal (such as kHz-MHz) output by the control circuit causes the piezoelectric vibrating plate to generate high-frequency mechanical vibration, and the generated high-frequency vibration is transmitted to the RO membrane filter element, so that the impurities in the membrane are shaken off under the vibration, and automatic impurity removal is achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0027] Figure 2 This is a schematic diagram of the interior of the main housing structure of the present invention;

[0028] Figure 3 For the present invention Figure 2 A schematic diagram of the structure enlargement in the middle;

[0029] Figure 4 This is a schematic diagram of the structure of the sealing assembly of the present invention;

[0030] Figure 5 For the present invention Figure 4 A magnified schematic diagram of the structure at B in the middle;

[0031] Figure 6 It is a schematic diagram of the structure of the vibration component of the present invention;

[0032] Figure 7 For the present invention Figure 6Schematic enlarged view of the structure at position C in the [Chinese context].

[0033] Main symbol explanations:

[0034] 1. Installation component; 101. Main housing; 102. Raw water inlet; 103. Central guide pipe; 104. Water passage groove; 105. Partition; 106. Clean water outlet; 107. Concentrate discharge port; 2. Filtration component; 201. RO membrane filter element; 202. Permanent magnet; 3. Sealing component; 301. Mounting frame; 302. Sealing base; 303. Sealing cavity; 304. Annular sealing ring; 4. Vibration component; 401. Electromagnetic drive motor; 402. Vibration substrate; 403. Resonant connection frame; 404. Electromagnetic coil group; 405. Piezoelectric vibration piece; 406. Pressure sensing cavity. Specific implementation manners

[0035] Next, in combination with the drawings and specific implementation manners, the present invention will be further described. It should be noted that, on the premise of no conflict, the following-described embodiments or technical features can be arbitrarily combined to form new embodiments.

[0036] Embodiment:

[0037] Please refer to Figures 1-5 , A RO membrane filter element capable of automatically jittering and removing impurities in this embodiment includes an installation component 1. The installation component 1 includes a main housing 101. A raw water inlet 102 is opened at the rear end of the main housing 101, and a concentrate discharge port 107 is opened at the front end of the main housing 101. A central guide pipe 103 is fixedly installed at the central position inside the main housing 101 through a partition 105. It further includes:

[0038] A filtration component 2, and the filtration component 2 includes a RO membrane filter element 201 sleeved on the outer surface of the central guide pipe 103;

[0039] A sealing component 3, and the sealing component 3 includes a mounting frame 301 fixedly installed on the outer surface of the main housing 101, and an annular sealing ring 304 is fixedly installed on the inner wall of the mounting frame 301;

[0040] A vibration component 4, and the vibration component 4 includes an electromagnetic drive motor 401 fixedly installed on the top of the mounting frame 301 through a vibration substrate 402, and a piezoelectric vibration piece 405 is arranged at the output end of the electromagnetic drive motor 401.

[0041] A partition 105 is fixedly installed on the inner wall of the main housing 101, and a central guide pipe 103 is fixedly installed at the central position of the partition 105.

[0042] A water passage groove 104 is opened on the outer surface of the central guide pipe 103, and a clean water outlet 106 is opened at the front end of the central guide pipe 103.

[0043] The wastewater enters from the raw water inlet 102 at the rear end of the main housing 101. The partition 105 can install the central water guide pipe 103. When the water enters around the RO membrane filter element 201, under the action of pressure, the water molecules flow into the central water guide pipe 103 through the water guide groove 104, and the pure water is discharged from the purified water outlet 106 along the central water guide pipe 103, while the impurities are intercepted outside the RO membrane filter element 201.

[0044] A permanent magnet 202 is fixedly installed at the top of the RO membrane filter element 201, and the permanent magnet 202 is matched with the piezoelectric vibrating piece 405.

[0045] A pressure sensing cavity 406 is formed at the bottom of the piezoelectric vibrating piece 405, and the pressure sensing cavity 406 corresponds to the permanent magnet 202.

[0046] A sealing base 302 is fixedly installed on the outer surface of the mounting frame 301. A sealing cavity 303 is formed inside the mounting frame 301, and an annular sealing ring 304 is fixedly installed on the inner wall of the sealing cavity 303.

[0047] The top of the sealing base 302 is threadedly connected with a vibrating substrate 402. An electromagnetic drive motor 401 is fixedly installed on the top of the vibrating substrate 402, and a resonance connecting frame 403 is fixedly installed at the bottom of the electromagnetic drive motor 401.

[0048] Since a permanent magnet 202 is fixedly installed at the top of the RO membrane filter element 201, the expansion of the RO membrane filter element 201 will drive the permanent magnet 202 to rise. When the permanent magnet 202 rises to the pressure sensing cavity 406 at the bottom of the piezoelectric vibrating piece 405, the permanent magnet 202 approaches the resonance connecting frame 403 at the bottom of the electromagnetic drive motor 401. At this time, due to the proximity of the permanent magnet 202, the magnetic field changes. This magnetic field change will generate an induced current in the electromagnetic coil group 404 fixedly connected inside the resonance connecting frame 403. This induced current triggers the subsequent circuit control, so that the piezoelectric vibrating piece 405 generates high-frequency mechanical vibrations. The high-frequency vibrations generated by the piezoelectric vibrating piece 405 are transmitted to the RO membrane filter element 201, and the impurities in the membrane are shaken off under the action of the vibrations, thus realizing the function of automatic impurity removal.

[0049] An electromagnetic coil group 404 is fixedly connected inside the resonance connecting frame 403, and a piezoelectric vibrating piece 405 is fixedly installed at the bottom of the resonance connecting frame 403.

[0050] In the embodiment of the present application, the implementation principle of an RO membrane filter element capable of automatically jittering and removing impurities is as follows: Wastewater enters from the raw water inlet 102 at the rear end of the main housing 101. The partition 105 can install the central water guide pipe 103. When water enters around the RO membrane filter element 201, under the action of pressure, water molecules enter the central water guide pipe 103 through the water passing groove 104 and discharge pure water from the purified water outlet 106 along the central water guide pipe 103, while impurities are retained outside the RO membrane filter element 201. Subsequently, the vibration assembly 4 is used to vibrate the impurities, ensuring that the wastewater is discharged from the inside of the installation assembly 1 through the concentrated water discharge port 107.

[0051] The mounting frame 301 in the sealing assembly 3 is fixed on the outer surface of the main housing 101. A sealing cavity 303 is formed inside the mounting frame 301, and an annular sealing ring 304 is fixedly installed on its inner wall, which can prevent water from leaking from the connection between the RO membrane filter element 201 and the main housing 101 during the filtering process. The sealing base 302 ensures that the subsequent vibration assembly 4 can install the vibration substrate 402 on the top of the sealing assembly 3.

[0052] As the filtering progresses, more and more impurities accumulate in the RO membrane filter element 201, causing the RO membrane filter element 201 to continuously expand. Since a permanent magnet 202 is fixedly installed at the top of the RO membrane filter element 201, the expansion of the RO membrane filter element 201 will drive the permanent magnet 202 to rise. When the permanent magnet 202 rises to the pressure sensing cavity 406 at the bottom of the piezoelectric vibration plate 405, the permanent magnet 202 approaches the resonance connection frame 403 at the bottom of the electromagnetic driver 401.

[0053] At this time, due to the proximity of the permanent magnet 202, the magnetic field changes. This magnetic field change generates an induced current in the electromagnetic coil group 404 fixedly connected inside the resonance connection frame 403. This induced current triggers subsequent circuit control, causing the piezoelectric vibration plate 405 to generate high-frequency mechanical vibrations. The high-frequency vibrations generated by the piezoelectric vibration plate 405 are transmitted to the RO membrane filter element 201, shaking off the impurities inside the membrane under the action of vibration, thus realizing the function of automatic impurity removal.

[0054] It should be noted here that when the permanent magnet 202 approaches the electromagnetic coil group 404, the relative distance between the permanent magnet and the electromagnetic coil group decreases, resulting in a gradual increase in the magnetic flux passing through the electromagnetic coil group 404. According to Faraday's law of electromagnetic induction, the rate of change of magnetic flux is proportional to the induced electromotive force. The magnetic field direction of the permanent magnet 202, such as the N pole pointing to the electromagnetic coil group, determines the distribution of magnetic induction lines in the electromagnetic coil group. As the permanent magnet approaches, the magnetic field strength B increases significantly in a local area, and the magnetic induction line density increases. The induced current output by the electromagnetic coil group 404 is usually a weak alternating current signal, which needs to be converted into a direct current signal through a rectifier circuit such as a bridge rectifier, and then boosted to a strength that can trigger subsequent circuits through an amplifier such as an operational amplifier. The amplified signal is input to a comparator or threshold switching circuit. When the signal strength exceeds the preset threshold, the circuit outputs a high level to activate the piezoelectric ceramic drive module. The piezoelectric vibration piece 405 deforms under the action of an alternating electric field, and its vibration frequency is consistent with the drive voltage frequency. A high-frequency electric signal output by the control circuit, such as 20 kHz to 1 MHz, can cause it to generate corresponding high-frequency mechanical vibrations.

[0055] The above embodiments are only the preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantive changes and substitutions made by those skilled in the art based on the present invention fall within the scope of protection required by the present invention.

Claims

1. An RO membrane filter element capable of automatically shaking and removing impurities, comprising an installation assembly (1), the installation assembly (1) comprising a main housing (101), a raw water inlet (102) being provided at the rear end of the main housing (101), a concentrated water discharge port (107) being provided at the front end of the main housing (101), a central water guide pipe (103) being fixedly installed at a central position inside the main housing (101) through a partition (105), characterized in that: Also includes: A filter assembly (2), the filter assembly (2) comprising an RO membrane filter element (201) sleeved on the outer surface of the central water pipe (103); A sealing assembly (3), the sealing assembly (3) comprising a mounting frame (301) fixedly mounted on the outer surface of the main housing (101), an annular sealing ring (304) fixedly mounted on the inner wall of the mounting frame (301); A vibration component (4), the vibration component (4) comprising an electromagnetic driver (401) fixedly mounted on the top of a mounting frame (301) via a vibration substrate (402), the output end of the electromagnetic driver (401) being provided with a piezoelectric vibration piece (405).

2. The RO membrane filter element capable of automatic shaking and impurity removal as claimed in claim 1, characterized in that: A partition plate (105) is fixedly mounted on the inner wall of the main shell (101), and a central water pipe (103) is fixedly mounted at the center of the partition plate (105).

3. The RO membrane filter element capable of automatic shaking and impurity removal as claimed in claim 2, characterized in that: The outer surface of the central water pipe (103) is provided with a water channel (104), and the front end of the central water pipe (103) is provided with a clean water outlet (106).

4. The RO membrane filter element capable of automatic shaking and impurity removal as claimed in claim 1, characterized in that: A permanent magnet (202) is fixedly mounted on the top of the RO membrane filter element (201), and the permanent magnet (202) matches the piezoelectric vibrating piece (405).

5. The RO membrane filter element capable of automatic shaking and impurity removal as claimed in claim 4, characterized in that: A pressure sensing cavity (406) is provided at the bottom of the piezoelectric vibrating plate (405), and the pressure sensing cavity (406) corresponds to the permanent magnet (202).

6. The RO membrane filter element capable of automatic shaking and impurity removal as claimed in claim 1, characterized in that: A sealing base (302) is fixedly mounted on the outer surface of the mounting frame (301), a sealing cavity (303) is provided inside the mounting frame (301), and an annular sealing ring (304) is fixedly mounted on the inner wall of the sealing cavity (303).

7. The RO membrane filter element capable of automatic shaking and impurity removal as claimed in claim 6, characterized in that: The top of the sealing base (302) is threadedly connected to a vibration substrate (402), the top of the vibration substrate (402) is fixedly mounted with an electromagnetic driver (401), and the bottom of the electromagnetic driver (401) is fixedly mounted with a resonance connection frame (403).

8. The RO membrane filter element capable of automatic shaking and impurity removal as claimed in claim 7, characterized in that: An electromagnetic coil group (404) is fixedly connected inside the resonance connection frame (403), and a piezoelectric vibration piece (405) is fixedly installed at the bottom of the resonance connection frame (403).

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