Liquid preparation ultrafiltration device

Abstract

The utility model belongs to ultrafiltration device technical field especially, and a kind of liquid preparation ultrafiltration device, to the existing ultrafiltration device in use process, cannot realize the synergistic effect of cleaning inside and outside of ultrafiltration membrane, when the stubborn pollutant layer of membrane outside side is not loosened, only rely on internal backflushing is difficult to completely remove;On the contrary, although external scraping can strip pollutant, but if there is no timely internal backflushing cooperation, the pollution that is scraped off may re-plug membrane hole or other area problem, present and propose following scheme, it includes casing and sealing cover, sealing cover fixed mounting in the top of casing, the bottom of sealing cover is fixedly connected with first sealing washer, the utility model discloses by a motor synchronous drive internal backflushing and external scraping, scraper first scrapes stubborn dirt layer outside of membrane, high-pressure backflushing water flow can instantly completely flush out loose dirt from membrane hole following it, avoid that pollutant plugs again, cleaning efficiency is extremely high, simple structure, convenient to use.

Description

Technical Field

[0001] This application relates to the field of ultrafiltration device technology, and in particular to a liquid preparation ultrafiltration device. Background Technology

[0002] Ultrafiltration technology, as a precision membrane separation process driven by pressure, has been widely used in liquid preparation, concentration, purification and sterilization processes in pharmaceutical, food and bioengineering fields. Liquid preparation ultrafiltration device is a device used for liquid filtration and purification. It effectively removes impurities such as macromolecules, particles and bacteria from liquids under pressure through ultrafiltration membrane technology.

[0003] In existing technologies, ultrafiltration devices cannot achieve a synergistic effect of cleaning the inside and outside of the ultrafiltration membrane during use. When the stubborn contaminant layer on the outside of the membrane is not loosened, it is difficult to completely remove it by internal backflushing alone. Conversely, although external scraping can remove contaminants, without timely internal backflushing, the scraped contaminants may re-block the membrane pores or other areas. Therefore, we propose a liquid preparation ultrafiltration device to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing ultrafiltration devices, such as the inability to achieve a synergistic effect of cleaning the inside and outside of the ultrafiltration membrane during use; the inability to completely remove stubborn contaminant layers on the outside of the membrane by internal backflushing alone when they are not loosened; and the fact that while external scraping can remove contaminants, without timely internal backflushing, the scraped contaminants may re-block the membrane pores or other areas. Therefore, this invention proposes a liquid preparation ultrafiltration device.

[0005] The liquid preparation ultrafiltration device provided in this application adopts the following technical solution:

[0006] A liquid preparation ultrafiltration device includes a housing and a sealing cover. The sealing cover is fixedly installed on the top of the housing, and a first sealing gasket is fixedly connected to the bottom of the sealing cover. The first sealing gasket is located between the sealing cover and the housing.

[0007] The tubular ultrafiltration membrane has an installation hole at the top of the housing. The tubular ultrafiltration membrane is slidably installed in the installation hole, and the top of the tubular ultrafiltration membrane is fixedly connected to the bottom of the sealing cap.

[0008] An auxiliary cleaning mechanism is installed inside the housing and is used to clean the contaminant layer on the outside of the tubular ultrafiltration membrane.

[0009] The ring seat is rotatably installed on the bottom inner wall of the housing, and the outer side of the housing is provided with a liquid inlet, a first liquid outlet, and a second liquid outlet.

[0010] Furthermore, an annular groove is provided on the top of the annular seat, an annular plate is rotatably installed in the annular groove, and a second sealing gasket is fixedly connected to the top of the annular plate, the second sealing gasket being in contact with the bottom of the tubular ultrafiltration membrane.

[0011] Furthermore, multiple nozzles are fixedly connected to the outside of the flushing pipe, a rotary joint is rotatably installed at one end of the flushing pipe, and a second bevel gear is fixedly installed on the outside of the flushing pipe.

[0012] Furthermore, a connecting block is fixedly installed at the other end of the flushing pipe. A slot is provided at the bottom of the connecting block, and a locking block is installed in the slot. The locking block is fixedly installed on the outside of the connecting rod. Through the locking of the locking block and the slot, when the flushing pipe rotates, the flushing pipe drives the connecting rod to rotate through the connecting block and the locking block.

[0013] Furthermore, a motor is fixedly installed on the top of the sealing cover, and a transmission shaft is fixedly connected to the output shaft of the motor. A first bevel gear is fixedly installed at one end of the transmission shaft. The first bevel gear meshes with a second bevel gear. When the transmission shaft rotates, the first bevel gear drives the second bevel gear to rotate.

[0014] Furthermore, the sealing cover has an installation groove, the bottom inner wall of the installation groove has a through hole, a sealing bearing is fixedly installed in the installation groove, and a flushing pipe is fixedly connected to the inner wall of the sealing bearing. The flushing pipe is rotatably installed in the through hole.

[0015] Furthermore, the auxiliary cleaning mechanism includes two scrapers, both of which are fixedly installed on the top of the annular seat. The outer sides of the two scrapers are in contact with the outer side of the tubular ultrafiltration membrane. A connecting rod is fixedly installed inside the annular seat. The two scrapers are used to clean the contaminant layer on the outer side of the tubular ultrafiltration membrane.

[0016] In summary, this application includes at least one of the following beneficial technical effects:

[0017] 1. In this solution, the output shaft of the motor drives the transmission shaft to rotate, and the first bevel gear fixed at the end of the transmission shaft rotates accordingly, driving the second bevel gear meshing with it to rotate. Since the second bevel gear is fixedly installed on the flushing pipe, and the flushing pipe is supported on the sealing cover by the sealing bearing, the flushing pipe starts to rotate. The flushing liquid is sprayed out at high speed from multiple nozzles distributed on the flushing pipe. Due to the rotation of the flushing pipe, the sprayed water can evenly and comprehensively cover the entire inner surface of the tubular ultrafiltration membrane, performing efficient backwashing and removing contaminants in the membrane pores.

[0018] 2. This solution uses a slot at the bottom of the connecting block to engage with a block fixedly mounted on the connecting rod. The flushing tube can transmit torque to the connecting rod, which is fixedly connected to the annular seat. This causes the annular seat to rotate on the inner wall at the bottom of the housing. The two scrapers fixed to the top of the annular seat rotate synchronously. Since the outer sides of the two scrapers are always in contact with the outer side of the tubular ultrafiltration membrane, the stubborn contaminant layer attached to the outer surface of the membrane is mechanically scraped off.

[0019] This invention uses a single motor to synchronously drive internal backwashing and external scraping. The scraper first loosens the stubborn dirt layer on the outside of the membrane, and the high-pressure backwash water flow that follows can instantly flush the loose dirt out of the membrane pores, preventing contaminants from clogging again. It has extremely high cleaning efficiency, simple structure, and is easy to use. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the main structure of a liquid preparation ultrafiltration device proposed in this utility model;

[0021] Figure 2 This utility model proposes a liquid preparation ultrafiltration device. Figure 1 Enlarged structural diagram of part A in the middle;

[0022] Figure 3 This utility model proposes a liquid preparation ultrafiltration device. Figure 1 Enlarged structural diagram of part B.

[0023] Reference numerals: 1. Housing; 2. Sealing cap; 3. First sealing gasket; 4. Liquid inlet; 5. First drain outlet; 6. Flushing pipe; 7. Second drain outlet; 8. Rotary joint; 9. Motor; 10. Tubular ultrafiltration membrane; 11. Drive shaft; 12. First bevel gear; 13. Second bevel gear; 14. Sealed bearing; 15. Annular seat; 16. Connecting rod; 17. Locking block; 18. Connecting block; 19. Annular plate; 20. Second sealing gasket; 21. Scraper; 22. Nozzle. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0025] Example 1

[0026] Reference Figures 1-3 A liquid preparation ultrafiltration device includes a housing 1 and a sealing cover 2. The sealing cover 2 is fixedly installed on the top of the housing 1, and a first sealing gasket 3 is fixedly connected to the bottom of the sealing cover 2. The first sealing gasket 3 is located between the sealing cover 2 and the housing 1.

[0027] The tubular ultrafiltration membrane 10 has an installation hole at the top of the housing 1. The tubular ultrafiltration membrane 10 is slidably installed in the installation hole, and the top of the tubular ultrafiltration membrane 10 is fixedly connected to the bottom of the sealing cap 2.

[0028] An auxiliary cleaning mechanism is installed inside the housing 1 and is used to clean the contaminant layer on the outside of the tubular ultrafiltration membrane 10.

[0029] The annular seat 15 is rotatably mounted on the bottom inner wall of the housing 1. The outer side of the housing 1 is provided with a liquid inlet 4, a first liquid outlet 5, and a second liquid outlet 7.

[0030] In this embodiment, multiple nozzles 22 are fixedly connected to the outside of the flushing pipe 6. A rotary joint 8 is rotatably installed at one end of the flushing pipe 6. A second bevel gear 13 is fixedly installed on the outside of the flushing pipe 6. A motor 9 is fixedly installed on the top of the sealing cover 2. A transmission shaft 11 is fixedly connected to the output shaft of the motor 9. A first bevel gear 12 is fixedly installed at one end of the transmission shaft 11. The first bevel gear 12 meshes with the second bevel gear 13. When the transmission shaft 11 rotates, the first bevel gear 12 drives the second bevel gear 13 to rotate. The auxiliary cleaning mechanism includes two scrapers 21. Both scrapers 21 are fixedly installed on the top of the annular seat 15. The outer sides of both scrapers 21 are in contact with the outer side of the tubular ultrafiltration membrane 10. A connecting rod 16 is fixedly installed inside the annular seat 15. The two scrapers 21 are used to clean the contaminant layer on the outside of the tubular ultrafiltration membrane 10.

[0031] In this embodiment, an annular groove is formed at the top of the annular seat 15, and an annular plate 19 is rotatably installed in the annular groove. A second sealing gasket 20 is fixedly connected to the top of the annular plate 19. The second sealing gasket 20 contacts the bottom of the tubular ultrafiltration membrane 10. The second sealing gasket 20 is made of an elastic and wear-resistant material, preferably food-grade silicone rubber, polytetrafluoroethylene (PTFE), or wear-resistant nitrile rubber. Its Shore A hardness is preferably between 50 and 80 degrees to ensure that it has sufficient elasticity to provide sealing pre-tightening force. The other end of the flushing pipe 6 is fixedly installed. There is a connecting block 18, and a slot is provided at the bottom of the connecting block 18. A locking block 17 is installed in the slot. The locking block 17 is fixedly installed on the outside of the connecting rod 16. Through the locking of the locking block 17 and the slot, when the flushing pipe 6 rotates, the flushing pipe 6 drives the connecting rod 16 to rotate through the connecting block 18 and the locking block 17. An installation groove is provided on the sealing cover 2. A through hole is provided on the bottom inner wall of the installation groove. A sealing bearing 14 is fixedly installed in the installation groove. The flushing pipe 6 is fixedly connected to the inner wall of the sealing bearing 14. The flushing pipe 6 is rotatably installed in the through hole.

[0032] The implementation principle of the liquid preparation ultrafiltration device in this application embodiment is as follows: During use, the liquid to be treated enters the interior of the housing 1 through the inlet 4 on the outside of the housing 1, filling the outer space of the tubular ultrafiltration membrane 10. Under pressure, small molecules (solvents, ions, etc.) in the liquid preparation permeate through the membrane wall of the tubular ultrafiltration membrane 10 and enter its inner cavity, becoming a clear permeate. The clean permeate is discharged and collected through the second drain port 7. Solutes, colloids, particles, and other contaminants that fail to permeate the membrane are trapped on the outside of the membrane, and their concentration gradually increases, forming a contaminant layer, which is finally discharged from the housing. The first drain port 5 on the membrane is used for discharge or circulation of concentrated liquid. When the accumulation of contaminants on the outside of the membrane leads to a decrease in filtration performance, the motor 9 is turned on, and the backwash liquid is introduced into the flushing pipe 6 through the rotary joint 8. The output shaft of the motor 9 drives the drive shaft 11 to rotate, and the first bevel gear 12 fixed to the end of the drive shaft 11 rotates accordingly, driving the second bevel gear 13 meshing with it to rotate. Since the second bevel gear 13 is fixedly installed on the flushing pipe 6, and the flushing pipe 6 is supported on the sealing cover 2 by the sealing bearing 14, the flushing pipe 6 begins to rotate, and the flushing liquid flows from the end of the membrane to the end of the membrane. Multiple nozzles 22 distributed on the flushing pipe 6 spray water at high speed. Due to the rotation of the flushing pipe 6, the sprayed water can evenly and comprehensively cover the entire inner surface of the tubular ultrafiltration membrane 10, performing efficient backwashing to remove contaminants from the membrane pores. At the same time, the rotational motion of the flushing pipe 6 is transmitted through the connecting block 18 at its end. The groove at the bottom of the connecting block 18 engages with the locking block 17 fixedly installed on the connecting rod 16, thereby transmitting torque to the connecting rod 16. The connecting rod 16 is fixedly connected to the annular seat 15, thus driving the annular seat 15 to move at the bottom of the housing 1. As the inner wall rotates, the two scrapers 21 fixed to the top of the annular seat 15 rotate synchronously. Since the outer sides of the two scrapers 21 are always in contact with the outer side of the tubular ultrafiltration membrane 10, the stubborn contaminant layer attached to the outer surface of the membrane is mechanically scraped off. During this process, the annular plate 19 rotates in the annular groove of the annular seat 15, and the second sealing gasket 20 at its top is pressed against the bottom of the tubular ultrafiltration membrane 10, which not only plays a sealing role, but also bears part of the weight of the tubular ultrafiltration membrane 10. The first sealing gasket 3 ensures the static seal between the sealing cover 2 and the housing 1.

[0033] Example 2

[0034] The difference between this embodiment and embodiment one is that: the inner wall of the housing 1 is provided with an annular guide groove, and multiple guide blocks are slidably installed in the annular guide groove. The multiple guide blocks are fixedly connected to the outer side of the annular seat 15. When the annular seat 15 rotates, the multiple guide blocks can stabilize the rotation of the annular seat 15.

[0035] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A liquid preparation ultrafiltration device comprising a housing (1) and a sealing cover (2), characterized in that: The sealing cover (2) is fixedly installed on the top of the housing (1), and a first sealing gasket (3) is fixedly connected to the bottom of the sealing cover (2), the first sealing gasket (3) being located between the sealing cover (2) and the housing (1); it also includes: The tubular ultrafiltration membrane (10) has an installation hole at the top of the housing (1). The tubular ultrafiltration membrane (10) is slidably installed in the installation hole, and the top of the tubular ultrafiltration membrane (10) is fixedly connected to the bottom of the sealing cap (2). An auxiliary cleaning mechanism is installed inside the housing (1) and is used to clean the contaminant layer on the outside of the tubular ultrafiltration membrane (10). The annular seat (15) is rotatably installed on the bottom inner wall of the housing (1). The outer side of the housing (1) is provided with a liquid inlet (4), a first liquid outlet (5) and a second liquid outlet (7).

2. The liquid preparation ultrafiltration device according to claim 1, characterized in that: The auxiliary cleaning mechanism includes two scrapers (21), both of which are fixedly installed on the top of the annular seat (15). The outer sides of the two scrapers (21) are in contact with the outer side of the tubular ultrafiltration membrane (10). A connecting rod (16) is fixedly installed inside the annular seat (15).

3. The liquid preparation ultrafiltration device according to claim 2, characterized in that: The top of the annular seat (15) is provided with an annular groove, and an annular plate (19) is rotatably installed in the annular groove. The top of the annular plate (19) is fixedly connected with a second sealing gasket (20), and the second sealing gasket (20) is in contact with the bottom of the tubular ultrafiltration membrane (10).

4. The liquid preparation ultrafiltration device according to claim 3, characterized in that: The sealing cover (2) has an installation groove, and the bottom inner wall of the installation groove has a through hole. A sealing bearing (14) is fixedly installed in the installation groove. A flushing pipe (6) is fixedly connected to the inner wall of the sealing bearing (14). The flushing pipe (6) is rotatably installed in the through hole.

5. The liquid preparation ultrafiltration device according to claim 4, characterized in that: Multiple nozzles (22) are fixedly connected to the outside of the flushing pipe (6), a rotary joint (8) is rotatably installed at one end of the flushing pipe (6), and a second bevel gear (13) is fixedly installed on the outside of the flushing pipe (6).

6. The liquid preparation ultrafiltration device according to claim 5, characterized in that: A motor (9) is fixedly installed on the top of the sealing cover (2). The output shaft of the motor (9) is fixedly connected to a transmission shaft (11). A first bevel gear (12) is fixedly installed at one end of the transmission shaft (11). The first bevel gear (12) meshes with a second bevel gear (13).

7. The liquid preparation ultrafiltration device according to claim 6, characterized in that: A connecting block (18) is fixedly installed at the other end of the flushing pipe (6). A slot is provided at the bottom of the connecting block (18), and a card block (17) is installed in the slot. The card block (17) is fixedly installed on the outside of the connecting rod (16).

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