Water glass purification equipment and method

Abstract

The present invention relates to a water glass purification device and method, and relates to the technical field of water glass production. The device comprises a processing box, a suction unit, a cleaning unit, and a driving unit disposed on the processing box, and further comprises a dual filtration assembly disposed within the processing box; the dual filtration assembly comprises a primary filter outer cylinder and a plurality of fine filter membranes disposed within the primary filter outer cylinder, the suction end of the suction unit extending into the fine filter membranes, and the filter holes on the primary filter outer cylinder are disposed between two adjacent fine filter membranes; the driving unit comprises a rotating reciprocating transmission member and a translating reciprocating transmission member, the driven end of the translating reciprocating transmission member being connected to a vertical rod; the suction force generated by the suction unit causes the coarsely separated liquid water glass within the processing box to pass through the primary filter outer cylinder and the fine filter membranes in sequence, completing a dual filtration purification operation, and then be discharged from the box by the suction unit. The present invention has a good purification effect and can ensure the separation and purification efficiency of the equipment under long-term operating conditions.

Description

Technical Field

[0001] The invention belongs to the technical field of water glass production, and particularly relates to water glass purification equipment and a method thereof. Background Art

[0002] Water glass is an important inorganic chemical raw material. In addition to being used as a detergent and adhesive component, it is also an important raw material for manufacturing fine chemical products such as silica gel, molecular sieves, silica sol, and white carbon black. It has a wide range of uses. In the inorganic silicate industry, the purification of liquid water glass mainly involves removing insoluble impurities in the liquid through physical methods to obtain a transparent and clear water glass solution.

[0003] The methods generally adopted for the purification of water glass include gravity sedimentation and centrifugal precipitation; however, gravity sedimentation takes a long time and has poor separation effect, while centrifugal sedimentation is difficult to completely remove smaller particles. Therefore, for the removal of fine particles in water glass solution, the above two methods are not ideal. Although the technology is constantly innovating, membrane filtration is used in the purification of water glass. Membrane filtration has excellent capture effect of fine particles, but impurities remain on the surface of the filter medium. Long-term use will inevitably cause a decline in treatment effect and efficiency, and the application effect has limitations. Therefore, we propose a water glass purification equipment and method. Summary of the Invention

[0004] The object of the present invention is to provide a water glass purification device and method in order to solve the above problems.

[0005] The present invention achieves the above-mentioned purpose through the following technical solutions:

[0006] The present invention provides a water glass purification device, comprising a processing box, a suction unit, a cleaning unit and a driving unit arranged on the processing box, and a double filtering component arranged in the processing box;

[0007] The double filtration assembly includes a primary filter outer cylinder and a plurality of fine filter membranes disposed in the primary filter outer cylinder, the suction end of the suction unit extends into the fine filter membranes, and the filter holes on the primary filter outer cylinder are disposed between two adjacent fine filter membranes;

[0008] The driving unit includes a rotating reciprocating transmission member and a translational reciprocating transmission member that cooperates with the rotating reciprocating transmission member, and the driven end of the translational reciprocating transmission member is connected to the fine filter membrane member;

[0009] The suction force generated by the suction unit allows the coarsely separated liquid water glass in the treatment box to pass through the primary filtration outer cylinder and the fine filtration membrane in turn to complete the double filtration and purification operation and then be discharged out of the box by the suction unit. At the same time of the double filtration and purification operation, the rotating reciprocating transmission member drives the translational reciprocating transmission member to swing and vibrate, so that the impurities deposited on the surface of the fine filtration membrane are broken up to enhance the filtration effect of the fine filtration membrane.

[0010] As a further optimization scheme of the present invention, the driving unit also includes a dual-axis motor and a transmission gear mounted on both ends of the primary filter outer cylinder. The rotating reciprocating transmission member is two and symmetrically arranged on the two transmission ends of the dual-axis motor. The dual-axis motor drives the rotating reciprocating transmission member to drive the transmission gear to drive the primary filter outer cylinder to rotate.

[0011] As a further optimization scheme of the present invention, the rotating reciprocating transmission member includes a rotating seat, a first meshing gear ring arranged outside the rotating seat and cooperating with the transmission gear, a second meshing gear ring arranged inside the rotating seat and a meshing gear extending into the rotating seat, the meshing gear is provided with a first transmission tooth, and the second meshing gear ring is provided with a second transmission tooth cooperating with the first transmission tooth.

[0012] As a further optimization scheme of the present invention, two vertical rods are provided inside the primary filter outer cylinder for fixing multiple fine filter membranes. One end of the two vertical rods is connected to the cleaning unit, and the other end is connected to the translational reciprocating transmission member and moves back and forth in translation under the drive of the translational reciprocating transmission member.

[0013] As a further optimization scheme of the present invention, the cleaning unit includes a water tank, a water supply pump, and an outlet pipe and a sewage pipe connected to the water supply pump. The ends of the outlet pipe and the sewage pipe are respectively connected to two vertical poles by setting joints. Nozzles and suction nozzles are respectively provided at positions on the outside of the two vertical poles corresponding to the filter holes on the primary filter outer cylinder.

[0014] As a further optimization scheme of the present invention, the translational reciprocating transmission member includes a transmission shaft axially connected to the rotating reciprocating transmission member, a rotating wheel arranged on the transmission shaft, a protruding rod arranged on the rotating wheel, a second hinged seat sleeved on the protruding rod and a first hinged seat sleeved on the vertical rod, a connecting rod is hinged between the first hinged seat and the second hinged seat, and the two ends of the inner part of the primary filter outer cylinder are rotated to cooperate with the limit seats of the limit vertical rod.

[0015] As a further optimization scheme of the present invention, the suction unit includes a suction pump, a suction rod arranged at the suction end of the suction pump, and a discharge pipe arranged at the discharge end of the suction pump. The suction rod extends from the lower end of the primary filter outer cylinder and has a suction nozzle on its outer side extending into the fine filter membrane.

[0016] As a further optimization scheme of the present invention, the fine filtration membrane element is composed of an upper filter membrane and a lower filter membrane that are arranged relative to each other to form a funnel structure. The outer edges of the upper filter membrane and the lower filter membrane are connected to the inner wall of the primary filtration outer cylinder, and the inner edges of the upper filter membrane and the lower filter membrane are arranged in a mutually connected state.

[0017] The present invention also provides a method for purifying water glass using any of the above-mentioned devices, comprising the following steps:

[0018] Step 1: The liquid water glass is passed through a plate and frame filter press to remove coarse particle impurities to obtain coarsely separated liquid water glass;

[0019] Step 2: The coarsely separated liquid water glass obtained in step 1 is pumped into the processing box through the pipeline, and the suction unit is started to extend the suction unit to the suction end in the fine filter membrane to generate suction force. Under the action of the suction force, the coarsely separated liquid water glass is initially filtered through the filter holes on the primary filter outer cylinder and then enters between two adjacent fine filter membranes. With the continuous action of the suction force, the coarsely separated liquid water glass after the primary filtration is finely filtered through the fine filter membrane to obtain purified liquid water glass, which is then discharged out of the box by the suction unit, and tiny impurity particles are retained on the fine filter membrane.

[0020] Step 3: During the double filtration and purification operation, the rotating reciprocating transmission member drives the translational reciprocating transmission member to swing and generate vibration, so that the tiny impurity particles trapped on the surface of the fine filter membrane are broken up to enhance the filtration effect of the fine filter membrane.

[0021] The beneficial effects of the present invention are:

[0022] (1) The present invention is provided with a double filtering component, which has a good treatment effect. The suction force is generated by the suction unit so that the coarsely separated liquid water glass in the treatment box is sequentially passed through the primary filtration outer cylinder and the fine filtration membrane to complete the double filtration and purification operation, and then discharged out of the box by the suction unit. At the same time as the double filtration and purification operation, the rotating reciprocating transmission member drives the translational reciprocating transmission member to swing the fine filtration membrane and generate vibration, so that the impurities deposited on the surface of the fine filtration membrane are broken up to enhance the filtration effect of the fine filtration membrane.

[0023] (2) The present invention cooperates with the operation of the rotating reciprocating transmission member driving the translational reciprocating transmission member to drive the fine filter membrane member to swing and generate vibration, and sets a cleaning unit for the fine filter membrane member, which can timely and effectively clean the tiny impurity particles trapped on the fine filter membrane member, thereby ensuring the separation and purification efficiency of the equipment under long-term operation conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A schematic diagram of the external structure provided by the present invention;

[0025] Figure 2 A schematic diagram of the internal structure provided by the present invention;

[0026] Figure 3 A schematic structural diagram of a dual filtration assembly provided by the present invention;

[0027] Figure 4 A schematic structural diagram of a translational reciprocating transmission member provided by the present invention;

[0028] Figure 5 A schematic structural diagram of a rotary reciprocating transmission member provided by the present invention;

[0029] In the figure: 1. Processing box; 2. Suction unit; 21. Suction pump; 22. Suction rod; 23. Drain pipe; 24. Suction nozzle; 3. Cleaning unit; 31. Water tank; 32. Water pump; 33. Outlet pipe; 34. Drain pipe; 35. Connector; 4. Driving unit; 41. Dual-axis motor; 42. Transmission gear; 43. Translational reciprocating transmission member; 431. Rotating wheel; 432. First hinge seat; 433. Connecting rod; 434 , second articulated seat; 435, transmission shaft; 436, protruding rod; 44, rotating reciprocating transmission member; 441, rotating seat; 442, second meshing gear ring; 443, first meshing gear ring; 444, meshing gear; 445, first transmission tooth; 446, second transmission tooth; 5, double filtration assembly; 51, primary filter outer cylinder; 52, vertical pole; 53, fine filter membrane; 531, upper filter membrane; 532, lower filter membrane; 6, limit seat. DETAILED DESCRIPTION

[0030] The present application is described in further detail below in conjunction with the accompanying drawings. It is necessary to point out that the following specific implementation methods are only used to further illustrate the present application and cannot be understood as limiting the scope of protection of the present application. Technicians in this field can make some non-essential improvements and adjustments to the present application based on the above application content.

[0031] Example 1

[0032] like Figure 1 As shown, this embodiment provides a water glass purification device, including a processing box 1, a suction unit 2, a cleaning unit 3 and a driving unit 4 arranged on the processing box 1, and also includes a double filtering component 5 arranged in the processing box 1;

[0033] like Figure 2-3 As shown, the dual filtration assembly 5 includes a primary filter outer cylinder 51 and a plurality of fine filter membranes 53 disposed in the primary filter outer cylinder 51. The suction end of the suction unit 2 extends into the fine filter membranes 53. The filter holes on the primary filter outer cylinder 51 are disposed between two adjacent fine filter membranes 53.

[0034] The driving unit 4 includes a rotating reciprocating transmission member 44 and a translational reciprocating transmission member 43 that cooperates with the rotating reciprocating transmission member 44. The driven end of the translational reciprocating transmission member 43 is connected to the fine filter membrane member 53.

[0035] The suction force generated by the suction unit 2 allows the coarsely separated liquid water glass in the processing box 1 to pass through the primary filtration outer cylinder 51 and the fine filtration membrane 53 in turn to complete the double filtration and purification operation and then be discharged out of the box by the suction unit 2. At the same time as the double filtration and purification operation, the rotating reciprocating transmission member 44 drives the translational reciprocating transmission member 43 to drive the fine filtration membrane 53 to swing and generate vibration, so that the impurities deposited on the surface of the fine filtration membrane 53 are broken up to enhance the filtration effect of the fine filtration membrane 53.

[0036] The driving unit 4 also includes a dual-axis motor 41 and a transmission gear 42 mounted on both ends of the primary filter outer cylinder 51. The rotating reciprocating transmission member 44 is symmetrically arranged on the two transmission ends of the dual-axis motor 41. The dual-axis motor 41 drives the rotating reciprocating transmission member 44 to drive the transmission gear 42 to drive the primary filter outer cylinder 51 to rotate, so that the coarsely separated liquid water glass entering the treatment box 1 can fully contact the primary filter outer cylinder 51 and complete preliminary filtration at the filter holes of the primary filter outer cylinder 51.

[0037] The suction unit 2 includes a suction pump 21, a suction rod 22 provided at the suction end of the suction pump 21, and a discharge pipe 23 provided at the discharge end of the suction pump 21. The suction rod 22 extends from the lower end of the primary filter outer cylinder 51 and is provided with a suction nozzle 24 on the outside thereof extending into the fine filter membrane 53. The suction force is generated by the suction pump 21 and the suction force is extended to the suction nozzle 24 in the fine filter membrane 53 through the suction rod 22. The liquid water glass that has been finely filtered by the fine filter membrane 53 is sucked into the discharge pipe 23 by the suction nozzle 24 and discharged out of the box.

[0038] like Figure 3 As shown, the fine filter membrane element 53 is composed of an upper filter membrane 531 and a lower filter membrane 532 which are arranged relative to each other to form a funnel structure. The outer edges of the upper filter membrane 531 and the lower filter membrane 532 are connected to the inner wall of the primary filter outer cylinder 51, and the inner edges of the upper filter membrane 531 and the lower filter membrane 532 are arranged to be connected to each other. When the rotating reciprocating transmission member 44 drives the translational reciprocating transmission member 43 to drive the fine filter membrane element 53 to swing, the upper filter membrane 531 and the lower filter membrane 532 produce a contraction swing, so that the tiny impurity particles retained thereon can be broken up, thereby ensuring the high filtration performance of the fine filter membrane element 53 and not being affected by the tiny impurity particles retained on the surface.

[0039] The specific application process is as follows: first, the dual-axis motor 41 drives the reciprocating transmission member 44 to drive the transmission gear 42 to drive the primary filter outer cylinder 51 to rotate, and the suction unit 2 is started, so that the suction unit 2 extends to the suction end inside the fine filter membrane 53 to generate suction force. Under the action of the suction force, the coarsely separated liquid water glass is filtered through the filter holes on the primary filter outer cylinder 51 and then enters between the two adjacent fine filter membranes 53. With the continuous action of the suction force, the coarsely separated liquid water glass after the primary filtration is finely filtered by the fine filter membrane 53 to obtain purified liquid water glass, which is discharged out of the box by the suction unit 2, and tiny impurity particles are retained on the fine filter membrane 53.

[0040] Example 2

[0041] On the basis of Example 1, in order to ensure efficient processing of the equipment, this embodiment cleans the tiny impurity particles intercepted by the fine filter membrane 53. The specific structure is designed as follows: Figure 5 As shown, the rotating reciprocating transmission member 44 includes a rotating base 441, a first meshing gear ring 443 provided outside the rotating base 441 and in transmission cooperation with the transmission gear 42, a second meshing gear ring 442 provided inside the rotating base 441, and a meshing gear 444 extending into the rotating base 441, wherein the meshing gear 444 is provided with a first transmission tooth 445, and the second meshing gear ring 442 is provided with a second transmission tooth 446 in transmission cooperation with the first transmission tooth 445;

[0042] Two vertical rods 52 are provided inside the primary filter outer cylinder 51 to fix multiple fine filter membranes 53. One end of the two vertical rods 52 is connected to the cleaning unit 3, and the other end is connected to the translational reciprocating transmission member 43 and moves back and forth in translation under the drive of the translational reciprocating transmission member 43.

[0043] The cleaning unit 3 includes a water tank 31, a water pump 32, and an outlet pipe 33 and a sewage pipe 34 connected to the water pump 32. The ends of the outlet pipe 33 and the sewage pipe 34 are respectively connected to two vertical poles 52 through a joint 35. Nozzles and suction nozzles are respectively provided at positions on the outside of the two vertical poles 52 corresponding to the filter holes on the primary filter outer cylinder 51.

[0044] like Figure 4 As shown, the translational reciprocating transmission member 43 includes a transmission shaft 435 axially connected to the rotating reciprocating transmission member 44, a rotating wheel 431 arranged on the transmission shaft 435, a protruding rod 436 arranged on the rotating wheel 431, a second hinged seat 434 sleeved on the protruding rod 436 and a first hinged seat 432 sleeved on the vertical rod 52, a connecting rod 433 is hinged between the first hinged seat 432 and the second hinged seat 434, and the two ends inside the primary filter outer cylinder 51 are rotatably matched with the limit seat 6 of the limit vertical rod 52.

[0045] The application process is as follows: when cleaning the fine filter membrane 53, the dual-axis motor 41 drives the rotating seat 441 to rotate. Under the transmission cooperation between the first meshing gear ring 443 and the transmission gear 42, the rotating seat 441 is able to drive the primary filter outer cylinder 51 to rotate. As the rotating seat 441 rotates, the second meshing gear ring 442 provided therein rotates synchronously, so that the second transmission teeth 446 of the second meshing gear ring 442 and the first transmission teeth 445 on the meshing gear 444 generate meshing transmission, and the meshing gear 444 rotates synchronously with the rotating seat 441.

[0046] The transmission shaft 435 connected to the meshing gear 444 rotates accordingly, driving the rotating wheel 431 on the transmission shaft 435 to rotate, and the protruding rod 436 on the rotating wheel 431 rotates as the rotating wheel 431 rotates. During the process of the protruding rod 436 rotating one circle, the connecting rod 433 hinged to the second hinge seat 434 pulls the vertical rod 52 fixed to its first hinge seat 432 to produce a translational reciprocating movement. At the same time as the vertical rod 52 translates, the fine filter membrane 53 connected to the vertical rod 52 produces The horizontal movement and reciprocating swing break up the tiny impurity particles trapped on the surface of the fine filter membrane 53. The water delivery pump 32 delivers the water in the water tank 31 to one of the vertical poles 52 through the outlet pipe 33, and sprays it out from the nozzle on the vertical pole 52. The sprayed water flushes along the outside of the fine filter membrane 53 and the filter holes on the primary filter outer cylinder 51. Subsequently, the impurity particles and sewage are sucked in by the suction nozzle on the other vertical pole 52 connected to the sewage pipe 34 and discharged out of the tank through the sewage pipe 34.

[0047] Example 3

[0048] This embodiment also provides a method for purifying water glass using any of the above-mentioned devices.

[0049] Step 1: The liquid water glass is passed through a plate and frame filter press to remove coarse particle impurities to obtain coarsely separated liquid water glass;

[0050] Step 2: The coarsely separated liquid water glass obtained in step 1 is pumped into the processing box 1 through the pipeline, and the suction unit 2 is started so that the suction unit 2 extends to the suction end in the fine filter membrane 53 to generate a suction force. Under the action of the suction force, the coarsely separated liquid water glass is initially filtered through the filter holes on the primary filter outer cylinder 51 and then enters between two adjacent fine filter membranes 53. With the continuous action of the suction force, the coarsely separated liquid water glass after the initial filtration is finely filtered by the fine filter membrane 53 to obtain purified liquid water glass, which is then discharged out of the box by the suction unit 2, and tiny impurity particles are trapped on the fine filter membrane 53.

[0051] Step 3: During the double filtration and purification operation, the rotating reciprocating transmission member 44 drives the translating reciprocating transmission member 43 to swing and vibrate the fine filter membrane 53, thereby breaking up the tiny impurity particles trapped on the surface of the fine filter membrane 53 to enhance the filtration effect of the fine filter membrane 53.

[0052] The above-described embodiments merely illustrate several implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, and all such variations and improvements fall within the scope of protection of the present invention.

Claims

1. A water glass purification device, comprising a treatment box (1), a suction unit (2), a cleaning unit (3) and a driving unit (4) arranged on the treatment box (1), characterized in that: It also includes a dual filter assembly (5) disposed in the processing box (1); The double filter assembly (5) includes a primary filter outer cylinder (51) and a plurality of fine filter membranes (53) arranged in the primary filter outer cylinder (51); the suction end of the suction unit (2) extends into the fine filter membrane (53); the filter hole on the primary filter outer cylinder (51) is arranged between two adjacent fine filter membranes (53); the fine filter membrane (53) is composed of an upper filter membrane (531) and a lower filter membrane (532) that are arranged relative to each other to form a funnel structure; the outer edges of the upper filter membrane (531) and the lower filter membrane (532) are connected to the inner side wall of the primary filter outer cylinder (51); and the inner edges of the upper filter membrane (531) and the lower filter membrane (532) are arranged in a mutually connected state; The driving unit (4) includes a rotating reciprocating transmission member (44) and a translational reciprocating transmission member (43) that cooperates with the rotating reciprocating transmission member (44), and the driven end of the translational reciprocating transmission member (43) is connected to the fine filter membrane member (53); two vertical rods (52) for fixing a plurality of fine filter membrane members (53) are provided inside the primary filter outer cylinder (51), one end of each of the two vertical rods (52) is connected to the cleaning unit (3), and the other end is connected to the translational reciprocating transmission member (43) and moves translationally back and forth under the drive of the translational reciprocating transmission member (43); The suction unit (2) generates a suction force so that the coarsely separated liquid water glass in the treatment box (1) is sequentially passed through the primary filtration outer cylinder (51) and the fine filtration membrane (53) to complete the double filtration and purification operation and then discharged from the box by the suction unit (2). During the double filtration and purification operation, the rotating reciprocating transmission member (44) drives the translational reciprocating transmission member (43) to drive the fine filtration membrane (53) to swing and generate vibration, so that the tiny impurity particles trapped on the surface of the fine filtration membrane (53) are broken up to enhance the filtration effect of the fine filtration membrane (53).

2. A water glass purification equipment according to claim 1, characterized in that: The driving unit (4) further comprises a dual-shaft motor (41) and a transmission gear (42) sleeved on both ends of the primary filter outer cylinder (51). The rotating reciprocating transmission member (44) is symmetrically arranged at the two transmission ends of the dual-shaft motor (41). The dual-shaft motor (41) drives the rotating reciprocating transmission member (44) to drive the transmission gear (42) to drive the primary filter outer cylinder (51) to rotate.

3. A water glass purification equipment according to claim 2, characterized in that: The rotating reciprocating transmission member (44) includes a rotating seat (441), a first meshing gear ring (443) arranged outside the rotating seat (441) and in transmission cooperation with the transmission gear (42), a second meshing gear ring (442) arranged inside the rotating seat (441), and a meshing gear (444) extending into the rotating seat (441), wherein the meshing gear (444) is provided with a first transmission tooth (445), and the second meshing gear ring (442) is provided with a second transmission tooth (446) in transmission cooperation with the first transmission tooth (445).

4. A water glass purification equipment according to claim 1, characterized in that: The cleaning unit (3) comprises a water tank (31), a water delivery pump (32), and an outlet pipe (33) and a sewage discharge pipe (34) connected to the water delivery pump (32). The ends of the outlet pipe (33) and the sewage discharge pipe (34) are respectively connected to two vertical poles (52) via joints (35). A nozzle and a suction nozzle are respectively provided on the outside of the two vertical poles (52) at positions corresponding to the filter holes on the primary filter outer cylinder (51).

5. A water glass purification equipment according to claim 1, characterized in that: The translation reciprocating transmission member (43) comprises a transmission shaft (435) axially connected to the rotation reciprocating transmission member (44), a rotating wheel (431) provided on the transmission shaft (435), a protruding rod (436) provided on the rotating wheel (431), a second hinged seat (434) sleeved on the protruding rod (436), and a first hinged seat (432) sleeved on the vertical rod (52), a connecting rod (433) being hinged between the first hinged seat (432) and the second hinged seat (434), and the two ends inside the primary filter outer cylinder (51) are rotatably matched with the limiting seats (6) of the limiting vertical rod (52).

6. A water glass purification equipment according to claim 1, characterized in that: The suction unit (2) comprises a suction pump (21), a suction rod (22) provided at the suction end of the suction pump (21), and a discharge pipe (23) provided at the discharge end of the suction pump (21). The suction rod (22) extends from the lower end of the primary filter outer cylinder (51) and is provided with a suction nozzle (24) on the outer side thereof, which extends into the fine filter membrane (53).

7. A method for purifying water glass using the equipment described in any one of claims 1 to 6, characterized in that: The following steps are included: Step 1: The liquid water glass is passed through a plate and frame filter press to remove coarse particle impurities to obtain coarsely separated liquid water glass; Step 2: The coarsely separated liquid water glass obtained in step 1 is pumped into the processing box (1) through the pipeline, and the suction unit (2) is started, so that the suction unit (2) extends to the suction end in the fine filter membrane (53) to generate a suction force. Under the action of the suction force, the coarsely separated liquid water glass is filtered through the filter holes on the primary filter outer cylinder (51) and then enters between two adjacent fine filter membranes (53). With the continuous action of the suction force, the coarsely separated liquid water glass after the primary filtration is finely filtered by the fine filter membrane (53) to obtain purified liquid water glass, which is discharged out of the box by the suction unit (2), and tiny impurity particles are retained on the fine filter membrane (53); Step 3: During the double filtration and purification operation, the rotating reciprocating transmission member (44) drives the translatory reciprocating transmission member (43) to drive the fine filter membrane member (53) to swing and generate vibration, so that the tiny impurity particles trapped on the surface of the fine filter membrane member (53) are broken up to enhance the filtering effect of the fine filter membrane member (53).

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