PVDF (Polyvinylidene Fluoride) ultrafiltration membrane device with flushing function

Abstract

The utility model discloses a PVDF (Polyvinylidene Fluoride) ultrafiltration membrane device with a flushing function, which comprises an ultrafiltration membrane device body and a washing assisting mechanism, the washing assisting mechanism comprises a straight increasing plate, a stud, an ultrasonic vibrator, an opposite protection plate, a screw cap, a pressure plate, a rotating rod, a radian shifting plate and a T-shaped rod, and the washing assisting mechanism is arranged at the ultrafiltration membrane device body. The washing assisting mechanism transmits ultrasonic waves into the flushed ultrafiltration membrane device body through an ultrasonic wave transmitting structure, and then the ultrasonic waves generate ultrasonic cavitation in the ultrafiltration membrane device body with water, so that attachments on the surface of the PVDF ultrafiltration membrane fall off under the action of rapid collapse force of tiny bubbles generated by the ultrasonic cavitation; and the top of the ultrafiltration membrane device body is provided with a manually-driven rod body structure of the washing assisting mechanism, so that water in the ultrafiltration membrane device body is stirred, stains on the surface of the PVDF ultrafiltration membrane under the influence of ultrasonic cavitation are taken away by water flow, and effective cleaning of the PVDF ultrafiltration membrane device is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of ultrafiltration membrane devices, in particular to a PVDF ultrafiltration membrane device with a flushing function. Background Art

[0002] Ultrafiltration membranes are widely used in industry and have become one of the new chemical unit operations. They are used for separation, concentration, and purification of biological products, pharmaceutical products, and the food industry. They are also used in terminal treatment devices for blood treatment, wastewater treatment, and ultrapure water preparation. However, ultrafiltration membranes will gradually become contaminated during use, and the filtering effect of the ultrafiltration membrane will decrease a lot. Therefore, PVDF ultrafiltration membranes need to be flushed.

[0003] Application No.: CN202220454782.6 discloses a PVDF ultrafiltration membrane device with a flushing function, comprising a shell and a flushing unit; the shell: a water inlet pipe is provided at the water inlet in the middle of the outer arc surface, an ultrafiltration membrane is provided in the middle of the top wall surface of the shell, a water outlet pipe is provided at the water outlet on the upper end surface of the ultrafiltration membrane, the upper end of the water outlet pipe penetrates the upper end surface of the shell and extends to the outside, a sewage pipe is provided at the sewage outlet arranged at the lower end of the outer arc surface of the shell, and an electromagnetic valve 1 is connected in series inside the water inlet pipe, the water outlet pipe and the sewage pipe, and a mounting plate is provided at the bottom end of the inner cavity of the shell; the flushing unit is arranged at the bottom end of the inner cavity of the shell, the flushing unit penetrates the middle of the lower end plate body of the ultrafiltration membrane and extends to the inner cavity of the ultrafiltration membrane, the PVDF ultrafiltration membrane device with a flushing function can repeatedly shake and deform up and down during the impact process, and cooperate with the effect of the jet-like water flow to thoroughly shake off and flush the stains attached to the surface of the membrane wire, so as to achieve the purpose of extending the life of the filter element.

[0004] The PVDF ultrafiltration membrane device of the prior art patented technology is provided with a flushing function, which can flush the ultrafiltration membrane in the housing, but this ultrafiltration membrane device only relies on a spring structure to shake the ultrafiltration membrane, thereby assisting the cleaning of the ultrafiltration membrane during flushing. However, relying solely on the auxiliary shaking of the spring will not cause excessively high-frequency shaking at the ultrafiltration membrane, thereby making the cleaning effect of the ultrafiltration membrane lower during flushing, affecting the use effect of the ultrafiltration membrane after flushing. For this reason, we propose a PVDF ultrafiltration membrane device with a flushing function. Utility Model Content

[0005] The main purpose of the utility model is to provide a PVDF ultrafiltration membrane device with a flushing function, wherein a washing aid mechanism is arranged at the ultrafiltration membrane device body, and the washing aid mechanism transmits ultrasonic waves into the ultrafiltration membrane device body after flushing by using an ultrasonic wave transmitting structure, and then the ultrasonic waves generate ultrasonic cavitation in the ultrafiltration membrane device body with water, so that the attachments on the surface of the PVDF ultrafiltration membrane that have not been flushed off are fallen off under the action of the rapid collapse force of tiny bubbles generated by ultrasonic cavitation, and a rod body structure that can be manually driven by the washing aid mechanism is arranged on the top of the ultrafiltration membrane device body, and the rod body structure can be manually driven when the ultrafiltration membrane device body is flushed and a large amount of water is stored inside, thereby stirring the water in the ultrafiltration membrane device body, so that the water flow carries away the stains on the surface of the PVDF ultrafiltration membrane under the influence of ultrasonic cavitation, thereby realizing effective cleaning of the PVDF ultrafiltration membrane device, and can effectively solve the problems in the background technology.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] A PVDF ultrafiltration membrane device with a flushing function comprises an ultrafiltration membrane device body and a washing aid mechanism, wherein the washing aid mechanism comprises a straight increase plate, a stud, an ultrasonic vibrator, a protective plate, a screw cover, a pressure plate, a rotating rod, an arc dial plate and a T-shaped rod. A straight increase plate is arranged outside the vertical shell of the ultrafiltration membrane device body, and a stud is welded to the outer plate surface of the straight increase plate, an ultrasonic vibrator is screwed on the stud, and a protective plate is symmetrically welded outside the straight increase plate outside the stud, a top opening is arranged at the top of the shell of the ultrafiltration membrane device body, and a screw cover is screwed in the top opening, a cover hole for the rotating rod to penetrate downward into the ultrafiltration membrane device body is arranged in the middle of the cover body of the screw cover, and a pressure plate for pressing and screwing the cover is welded to the top of the rotating rod, a T-shaped rod is welded to the top of the plate body of the pressure plate, and an arc dial plate is welded outside the rod body of the rotating rod.

[0008] Furthermore, a rubber sealing ring is embedded and bonded in the cover hole of the rotary cover, and a rotating rod is inserted into the rubber sealing ring;

[0009] By adopting the above technical solution, after the cover hole of the screw cap is embedded with a rubber sealing ring, the rotating rod can be inserted into the shell of the ultrafiltration membrane device body along the cover hole of the screw cap through the rubber sealing ring, so that a sealing structure exists between the screw cap and the rotating rod.

[0010] Furthermore, the arc shifting plate is welded in three groups at three points outside the rod body of the rotating rod;

[0011] By adopting the above technical solution, the rotating rod is provided with more arc-shaped paddles outside, which can stir the water in the ultrafiltration membrane device body after rotation.

[0012] Furthermore, three groups of studs are welded on the surface of the direct increase plate, and ultrasonic vibrators are screwed and installed at the three groups of columns of the studs;

[0013] By adopting the above technical solution, three groups of ultrasonic vibrators are installed outside the direct increase plate by three groups of bolts.

[0014] Furthermore, the height of the guard plate welded outside the direct increase plate is greater than the height of the shell of the ultrasonic vibrator;

[0015] By adopting the above technical solution, the guard plate can be arranged outside the direct increase plate to protect the ultrasonic vibrator.

[0016] Furthermore, the plate body of the direct increase plate is integrally formed outside the vertical shell of the ultrafiltration membrane device body, and the outer plate surface of the direct increase plate is a flat straight plate body;

[0017] By adopting the above technical solution, after the straight increase plate is integrally formed outside the ultrafiltration membrane device body, the flat straight plate body can be used to contact the bottom of the ultrasonic vibrator for planar contact, which facilitates the ultrasonic vibrator to transmit ultrasonic waves into the ultrafiltration membrane device body.

[0018] Compared with the prior art, the utility model has the following beneficial effects:

[0019] The utility model provides a washing aid mechanism at the ultrafiltration membrane device body, and the washing aid mechanism transmits the ultrasonic wave into the ultrafiltration membrane device body after washing by means of the structure of transmitting ultrasonic wave, and then the ultrasonic wave generates ultrasonic cavitation in the ultrafiltration membrane device body with water, so that the attachments on the surface of the PVDF ultrafiltration membrane that have not been washed off fall off under the action of the rapid collapse force of the tiny bubbles generated by the ultrasonic cavitation;

[0020] In addition, a manually driven rod structure of a washing-assisting mechanism is provided on the top of the ultrafiltration membrane device body. The rod structure can be manually driven when the ultrafiltration membrane device body is flushed and a large amount of water is stored inside, thereby stirring the water in the ultrafiltration membrane device body, so that the water flow carries away the stains on the surface of the PVDF ultrafiltration membrane under the influence of ultrasonic cavitation, thereby realizing effective cleaning of the PVDF ultrafiltration membrane device. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The utility model is a schematic diagram of the overall structure of a PVDF ultrafiltration membrane device with a flushing function.

[0022] Figure 2 This is an exploded view of a washing aid mechanism of a PVDF ultrafiltration membrane device with a washing function according to the utility model.

[0023] Figure 3 The utility model is a schematic diagram of the disassembly of the screw cap and the rotating rod of a PVDF ultrafiltration membrane device with a flushing function.

[0024] In the figure: 1. Ultrafiltration membrane device body; 2. Washing aid mechanism; 3. Straightening plate; 4. Stud; 5. Ultrasonic vibrator; 6. Guard plate; 7. Top opening; 8. Screw cover; 9. Pressure plate; 10. Rotating rod; 11. Curved dial plate; 12. T-shaped rod; 13. Rubber sealing ring. DETAILED DESCRIPTION

[0025] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0026] like Figure 1-3 As shown, a PVDF ultrafiltration membrane device with a flushing function comprises an ultrafiltration membrane device body 1, and also comprises a washing aid mechanism 2, wherein the washing aid mechanism 2 comprises a straight increase plate 3, a stud 4, an ultrasonic vibrator 5, a protective plate 6, a screw cover 8, a pressure plate 9, a rotating rod 10, an arc dial plate 11 and a T-shaped rod 12, and a straight increase plate 3 is arranged outside the vertical shell of the ultrafiltration membrane device body 1, and a stud 4 is welded on the outer plate surface of the straight increase plate 3, and an ultrasonic vibrator 5 is screwed and installed at the stud 4. The upper end of the ultrafiltration membrane device body 1 is provided with a top opening 7, and a screw cap 8 is screwed into the top opening 7, a cover hole for a rotating rod 10 to pass downward into the ultrafiltration membrane device body 1 is provided in the middle of the cover body of the screw cap 8, and a pressure plate 9 for pressing the screw cap 8 is welded to the top of the rotating rod 10, a T-shaped rod 12 is welded to the top of the plate body of the pressure plate 9, and an arc dial plate 11 is welded to the outside of the rod body of the rotating rod 10.

[0027] A rubber sealing ring 13 is embedded and bonded into the cover hole of the rotary cover 8, and a rotating rod 10 is inserted into the rubber sealing ring 13;

[0028] By adopting the above technical solution, after the rubber sealing ring 13 is embedded in the cover hole of the screw cap 8, the rotating rod 10 can be inserted into the shell of the ultrafiltration membrane device body 1 along the cover hole of the screw cap 8 through the rubber sealing ring 13, so that a sealing structure exists between the screw cap 8 and the rotating rod 10.

[0029] The arc shifting plates 11 are welded in three groups at three points outside the rotating rod 10;

[0030] By adopting the above technical solution, the rotating rod 10 is provided with a plurality of arc-shaped paddles 11 outside, which can stir the water in the ultrafiltration membrane device body 1 after rotation.

[0031] Among them, three groups of studs 4 are welded on the surface of the straight increase plate 3, and the three groups of columns of the studs 4 are screwed and installed with ultrasonic vibrators 5;

[0032] By adopting the above technical solution, three groups of ultrasonic vibrators 5 are installed outside the direct increase plate 3 by three groups of bolts 4 .

[0033] The height of the guard plate 6 welded outside the direct increase plate 3 is greater than the shell height of the ultrasonic vibrator 5;

[0034] By adopting the above technical solution, the shielding plate 6 can be arranged outside the direct increase plate 3 to shield the ultrasonic vibrator 5 .

[0035] The plate body of the straight increase plate 3 is integrally formed outside the vertical shell of the ultrafiltration membrane device body 1, and the outer plate surface of the straight increase plate 3 is a flat straight plate body;

[0036] By adopting the above technical solution, after the straight increase plate 3 is integrally formed outside the ultrafiltration membrane device body 1, the flat straight plate body can be used to contact the bottom of the ultrasonic vibrator 5 for planar contact, which facilitates the ultrasonic vibrator 5 to transmit ultrasonic waves into the ultrafiltration membrane device body 1.

[0037] It should be noted that the utility model is a PVDF ultrafiltration membrane device with a flushing function, a washing aid mechanism 2 is arranged at the ultrafiltration membrane device body 1, and after the straight increase plate 3 of the washing aid mechanism 2 is integrally formed outside the ultrafiltration membrane device body 1, an ultrasonic vibrator 5 is screwed and installed on the outside of the straight increase plate 3 with a stud 4, and then the ultrasonic vibrator 5 can be externally connected to an ultrasonic generator for control, and a protective plate 6 welded on the outside of the straight increase plate 3 can shield and protect the ultrasonic vibrator 5, and a rotary cover 8 can be screwed and installed in the top top opening 7 of the ultrafiltration membrane device body 1. When the PVDF ultrafiltration membrane in the ultrafiltration membrane device body 1 is flushed, a worker can hold the T-shaped rod 12 to rotate it, and then the pressure plate 9 rotates on the top of the rotary cover 8. At this time, the rotating rod 10 under the pressure plate 9 rotates at the rubber sealing ring 13, and the rotating rod 10 uses a plurality of groups of arc dial plates 11 to dial the water flow in the ultrafiltration membrane device body 1. When the ultrafiltration membrane When the pipe body of the device body 1 is connected to a pressurized water pipe to flush the PVDF ultrafiltration membrane, the water flow will be stored in the ultrafiltration membrane device body 1, and then the ultrasonic vibrator 5 is controlled by the ultrasonic generator to transmit the ultrasonic wave to the ultrafiltration membrane device body 1 at the direct increase plate 3, and then the ultrasonic wave generates ultrasonic cavitation in the ultrafiltration membrane device body 1 with water, so that the attachments on the surface of the PVDF ultrafiltration membrane that have not been flushed off fall off under the action of the rapid collapse force of the tiny bubbles generated by the ultrasonic cavitation. At this time, the water in the ultrafiltration membrane device body 1 can be stirred to form a water flow fluctuation environment, which assists the effective cleaning of the PVDF ultrafiltration membrane in the ultrafiltration membrane device body 1 after flushing, and the sewage in the ultrafiltration membrane device body 1 can be discharged from the pipe outside its shell, the screw cover 8 can be removed from the top opening 7, and then the arc plate 11 can take out the top opening 7 of the ultrafiltration membrane device body 1 from the top opening 7 for cleaning.

[0038] It should be noted that the utility model is a PVDF ultrafiltration membrane device with a flushing function. The components in the utility model are all components known to technical personnel in the field, and their structures and principles can be known to technical personnel through technical manuals or through conventional experimental methods.

[0039] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A PVDF ultrafiltration membrane device with flushing function, comprising an ultrafiltration membrane device body (1), characterized in that: The invention also comprises a washing aid mechanism (2), wherein the washing aid mechanism (2) comprises a straight increase plate (3), a stud (4), an ultrasonic vibrator (5), a protective plate (6), a rotary cover (8), a pressure plate (9), a rotating rod (10), an arc dial plate (11) and a T-shaped rod (12); a straight increase plate (3) is arranged outside the vertical shell of the ultrafiltration membrane device body (1), and a stud (4) is welded to the outer plate surface of the straight increase plate (3), an ultrasonic vibrator (5) is screwed and installed at the stud (4), and the straight increase plate (3) outside the stud (4) is ) are symmetrically welded to the outside of the protective plate (6), the top of the shell of the ultrafiltration membrane device body (1) is provided with a top opening (7), and a screw cover (8) is screwed into the top opening (7), a cover hole for the rotating rod (10) to pass downward into the ultrafiltration membrane device body (1) is provided in the middle of the cover body of the screw cover (8), and a pressure plate (9) for pressing the screw cover (8) is welded to the top of the rotating rod (10), a T-shaped rod (12) is welded to the top of the plate body of the pressure plate (9), and an arc dial plate (11) is welded to the outside of the rod body of the rotating rod (10).

2. The PVDF ultrafiltration membrane device with flushing function according to claim 1, characterized in that: A rubber sealing ring (13) is embedded and bonded in the cover hole of the rotary cover (8), and a rotating rod (10) is inserted into the rubber sealing ring (13).

3. The PVDF ultrafiltration membrane device with flushing function according to claim 1, characterized in that: The arc shifting plates (11) are welded in three groups at three points outside the rod body of the rotating rod (10).

4. The PVDF ultrafiltration membrane device with flushing function according to claim 1, characterized in that: Three groups of studs (4) are welded on the surface of the direct increase plate (3), and ultrasonic vibrators (5) are screwed and installed at the three groups of columns of the studs (4).

5. The PVDF ultrafiltration membrane device with flushing function according to claim 4, characterized in that: The height of the counter-guard plate (6) welded outside the direct increase plate (3) is greater than the height of the shell of the ultrasonic vibrator (5).

6. The PVDF ultrafiltration membrane device with flushing function according to claim 5, characterized in that: The plate body of the direct increase plate (3) is integrally formed outside the vertical shell body of the ultrafiltration membrane device body (1), and the outer plate surface of the direct increase plate (3) is a flat straight plate body.

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