Tangential flow filtering device

Abstract

The utility model relates to the technical field of membrane filtering devices, and discloses a tangential flow filtering device which comprises a filtering main body, a membrane filtering box is arranged on the filtering main body, the interior of the membrane filtering box is hollow, a sealing frame is fixedly connected to the upper surface of the membrane filtering box, a cover is arranged on the outer surface of the sealing frame in a sliding and sleeving mode, and a dismounting mechanism is arranged on the membrane filtering box. The dismounting mechanism comprises a fixing block, a fixing groove, a two-way threaded rod, a handle, a supporting block, a positioning block, wheels, a supporting shaft, a tightening block, a sealing spring, a sealing frame and a fixing plate, according to the tangential flow filtering device, the cover is downwards and tightly attached to the membrane filtering box, so that the cover downwards covers the membrane filtering box, and then the membrane filtering box and the cover are sealed; the installation between the membrane filter box and the cover is completed, the installation is rapid and convenient, the installation efficiency is high, labor is saved, elements in the membrane filter box are convenient to maintain and replace, the device is convenient to maintain, and the practicability of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of membrane filtering devices, in particular to a tangential flow filtering device. Background Art

[0002] Tangential flow refers to a form of filtration in which the direction of liquid flow is perpendicular to the filtration direction. The tangential flow filter is a process test instrument commonly used in the fields of biology and pharmacy. It can be used for product concentration, dialysis (desalting, dealcoholization, etc.), buffer replacement, and can replace the centrifuge to collect cells from the fermentation tank and remove cell debris.

[0003] Existing public patent: CN202321256032.9 In the tangential flow membrane filtration device, water and buffer solution are respectively added to the tank body through two metering pumps. When cleaning the membrane filter box, the second valve can be closed, the first valve can be opened, and the metering pump on the first cylinder can be started to transport water to clean the tank body. It has comprehensive functions, high cleaning efficiency, and saves manpower. However, the membrane filter box in the comparative example is fixed by one-piece molding or commonly used bolts, which makes the maintenance and inspection of the membrane filter box more complicated and laborious when the membrane or other components in the membrane filter box are damaged, which makes it inconvenient to repair the tangential flow filtration device. Utility Model Content

[0004] 1. Technical issues to be solved

[0005] In view of the deficiencies in the prior art, the utility model provides a tangential flow filtration device, which solves the problem that the membrane filter box in the comparative example is fixed by one-piece molding or commonly used bolts, which makes the maintenance and inspection of the membrane filter box more complicated and laborious when the membrane or other components inside the membrane filter box are damaged, thereby making it inconvenient to maintain the tangential flow filtration device.

[0006] (II) Technical solution

[0007] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a tangential flow filtration device, comprising a filtration body, on which a membrane filtration box is arranged;

[0008] The membrane filter box is hollow inside, and a sealing frame is fixedly connected to the upper surface of the membrane filter box;

[0009] Wherein, a cover is provided on the outer surface of the sealing frame;

[0010] Among them, a disassembly mechanism is arranged on the membrane filter box, and the disassembly mechanism includes a fixing block, a fixing groove, a bidirectional threaded rod, a handle, a supporting block, a positioning block, a wheel, a supporting shaft, a tightening block, a sealing spring, a sealing frame and a fixing plate.

[0011] Preferably, the two tightening blocks are fixedly connected to the left and right outer surfaces of the membrane filtration box;

[0012] Wherein, the lower surface of the cover is in contact with the upper surface of the filter body;

[0013] Wherein, two fixing blocks are fixedly connected to the left and right outer surfaces of the cover;

[0014] Wherein, two fixing grooves are arranged on the lower surfaces of the two fixing blocks.

[0015] Preferably, the four support blocks are slidably connected in the two fixing grooves;

[0016] Wherein, two bidirectional threaded rods are rotatably connected between the front and rear inner walls of the two fixing grooves;

[0017] Wherein, two support blocks are threadedly sleeved on the outer surface of the bidirectional threaded rod;

[0018] The two support blocks are located at two different thread sections of the bidirectional threaded rod.

[0019] Preferably, the lower surface of the support block extends out of the lower surface of the fixing block through the fixing groove;

[0020] Among them, the four positioning blocks are fixedly connected to the lower surfaces of the four supporting blocks;

[0021] Among them, the four supporting shafts are rotatably connected to the outer surface of one side of the four positioning blocks close to the membrane filter box through bearings;

[0022] Among them, four wheels are fixedly connected to the outer surfaces of four supporting shafts.

[0023] Preferably, the tightening block is in the shape of an isosceles triangle;

[0024] Among them, four wheels are slidably connected to the lower surfaces of the two tightening blocks;

[0025] The front end of the bidirectional threaded rod rotates and penetrates the front side surface of the fixing block.

[0026] Preferably, the two handles are fixedly connected to the front ends of the two bidirectional threaded rods;

[0027] Wherein, a plurality of sealing springs are fixedly connected to the top wall of the cover;

[0028] The fixed plate is slidably sleeved in the cover, and the lower ends of the plurality of sealing springs are fixedly connected to the upper surface of the fixed plate;

[0029] Wherein, a rubber pad is arranged on the lower surface of the fixing plate.

[0030] (III) Beneficial effects

[0031] Compared with the prior art, the utility model provides a tangential flow filtration device, which has the following beneficial effects:

[0032] 1. The tangential flow filtration device has a cover that is tightly attached to the membrane filter box downward, so that the cover covers the membrane filter box downward, thereby sealing the membrane filter box and the cover, thereby completing the installation between the membrane filter box and the cover. The installation is quick and convenient, with high installation efficiency and less labor, thereby facilitating the repair and replacement of components in the membrane filter box, thereby facilitating the maintenance of the device, thereby increasing the practicability of the device.

[0033] 2. The tangential flow filtration device, under the action of the released elastic force of the sealing spring, pushes the fixing plate and the sealing frame to fit tightly together, thereby improving the sealing performance between the membrane filtration box and the cover, thereby increasing the practicality of the device.

[0034] 3. The cover of the tangential flow filtration device can be removed, and then the components in the membrane filtration box can be replaced. The replacement is convenient and the disassembly is simple, which saves manpower while ensuring the maintenance efficiency of the device, thereby increasing the practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 This is a schematic diagram of the overall structure of a tangential flow filtration device of the utility model;

[0036] Figure 2 This is a schematic diagram of the structure of the membrane filter box of the utility model;

[0037] Figure 3 This is a schematic diagram of the support block structure of the utility model;

[0038] Figure 4 This is a schematic diagram of the sealing frame structure of the utility model;

[0039] Figure 5 This is a schematic diagram of the bottom structure of the fixed block of the utility model;

[0040] Figure 6 This is a schematic diagram of the bottom structure of the lid of the utility model.

[0041] In the figure: 1. filter body; 2. membrane filter box; 3. cover; 4. fixing block; 5. fixing groove; 6. two-way threaded rod; 7. handle; 8. support block; 9. positioning block; 10. wheel; 11. support shaft; 12. tightening block; 13. sealing spring; 14. sealing frame; 15. fixing plate. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0043] See also Figure 1-6 The utility model provides a new technical solution: a tangential flow filtration device, including a filter body 1, the filter body 1 includes a base, a back plate, a top frame, a placement seat, a tank body, a first cylinder body, a second cylinder body, a reflux pipe, a cavity, etc. When the membrane filter box needs to be cleaned, the first valve, the second valve and the fourth valve can be closed, and the third valve can be opened. Then, the metering pump on the first cylinder body is started to carry out water backwashing. When the tank body is cleaned, the second valve can be closed and the first valve can be opened for cleaning. The filter body 1 is the existing technology in the existing public patent: CN202321256032.9 tangential flow membrane filtration device, which will not be described in detail here;

[0044] Among them, a membrane filter box 2 is provided on the filter body 1, and the membrane filter box 2 is the prior art in the existing public patent: CN202321256032.9 tangential flow membrane filtration device, which will not be described in detail here;

[0045] The membrane filter box 2 is hollow inside, and a sealing frame 14 is fixedly connected to the upper surface of the membrane filter box 2;

[0046] The outer surface of the sealing frame 14 is slidably covered with a cover 3;

[0047] Among them, a disassembly mechanism is provided on the membrane filtration box 2, and the disassembly mechanism includes a fixing block 4, a fixing groove 5, a bidirectional threaded rod 6, a handle 7, a support block 8, a positioning block 9, a wheel 10, a support shaft 11, a tightening block 12, a sealing spring 13, a sealing frame 14 and a fixing plate 15.

[0048] Furthermore, two tightening blocks 12 are fixedly connected to the left and right outer surfaces of the membrane filtration box 2;

[0049] The lower surface of the cover 3 is in contact with the upper surface of the filter body 1;

[0050] Among them, two fixing blocks 4 are fixedly connected to the left and right outer surfaces of the cover 3;

[0051] The two fixing grooves 5 are formed on the lower surfaces of the two fixing blocks 4 .

[0052] Further, four support blocks 8 are slidably connected in the two fixing grooves 5;

[0053] Among them, two bidirectional threaded rods 6 are rotatably connected between the front and rear inner walls of the two fixing grooves 5;

[0054] Among them, two support blocks 8 are threadedly sleeved on the outer surface of the bidirectional threaded rod 6;

[0055] The two support blocks 8 are located at two different thread sections of the bidirectional threaded rod 6 .

[0056] Further, the lower surface of the support block 8 extends out of the lower surface of the fixing block 4 through the fixing groove 5;

[0057] Among them, four positioning blocks 9 are fixedly connected to the lower surfaces of four supporting blocks 8;

[0058] Among them, four support shafts 11 are rotatably connected to the outer surface of one side of four positioning blocks 9 close to the membrane filter box 2 through bearings;

[0059] The four wheels 10 are fixedly connected to the outer surfaces of the four supporting shafts 11 .

[0060] Further, the isosceles triangle shape of the tightening block 12;

[0061] Among them, the four wheels 10 are slidably connected to the lower surfaces of the two tightening blocks 12;

[0062] The front end of the bidirectional threaded rod 6 rotates and penetrates the front surface of the fixing block 4 .

[0063] Further, two handles 7 are fixedly connected to the front ends of the two bidirectional threaded rods 6;

[0064] Among them, a plurality of sealing springs 13 are fixedly connected to the top wall of the cover 3;

[0065] The fixing plate 15 is slidably sleeved in the cover 3, and the lower ends of the plurality of sealing springs 13 are fixedly connected to the upper surface of the fixing plate 15;

[0066] Wherein, a sealing member is provided between the fixing plate 15 and the cover 3;

[0067] Wherein, a rubber pad is provided on the lower surface of the fixing plate 15 .

[0068] When the filter box 2 is in the closed position, the lid 3 is moved downwards to close the filter box 2, and the filter box 2 is in the closed position. ...

[0069] As mentioned above, during the installation and sealing process of the cover 3 and the membrane filter box 2, the upper surface of the sealing frame 14 contacts the lower surface of the fixed plate 15, and as the covering process progresses, the sealing frame 14 squeezes the fixed plate 15, causing the fixed plate 15 to move upward. The upward movement of the fixed plate 15 squeezes the sealing spring 13, causing the sealing spring 13 to be squeezed and deformed. At the same time, under the action of the released elastic force of the sealing spring 13, the fixed plate 15 is pushed tightly against the sealing frame 14, thereby improving the sealing performance between the membrane filter box 2 and the cover 3, thereby increasing the practicability of the device.

[0070] As mentioned above, when it is necessary to replace the components in the membrane filter box 2, it is only necessary to rotate the handle 7 so that the handle 7 drives the front and rear support blocks 8 to move away from each other, and support the two support blocks 8 to move away from each other until they do not block the up and down movement of the cover 3, and then the cover 3 can be removed, and then the components in the membrane filter box 2 can be replaced. The replacement is convenient and the disassembly is simple, which saves manpower while ensuring the maintenance efficiency of the device, thereby increasing the practicality of the device.

[0071] When the filter block 12 is in contact with the bottom surface of the filter element 14, the wheel 10 is moved in a direction opposite to the bottom surface of the filter element 14, and the wheel 10 is moved in a direction opposite to the bottom surface of the filter element 14. ...

[0072] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A tangential flow filtration device, comprising a filter body (1), characterized in that: The filtering body (1) is provided with a membrane filtering box (2); The membrane filter box (2) is hollow inside, and a sealing frame (14) is fixedly connected to the upper surface of the membrane filter box (2); Wherein, a cover (3) is slidably sleeved on the outer surface of the sealing frame (14); The membrane filter box (2) is provided with a disassembly mechanism, which comprises a fixing block (4), a fixing groove (5), a bidirectional threaded rod (6), a handle (7), a support block (8), a positioning block (9), a wheel (10), a support shaft (11), a tightening block (12), a sealing spring (13), a sealing frame (14) and a fixing plate (15).

2. A tangential flow filtration device according to claim 1, characterized in that: The two tightening blocks (12) are fixedly connected to the left and right outer surfaces of the membrane filtration box (2); The lower surface of the cover (3) is in contact with the upper surface of the filter body (1); Wherein, two fixing blocks (4) are fixedly connected to the left and right outer surfaces of the cover (3); Wherein, two fixing grooves (5) are provided on the lower surfaces of the two fixing blocks (4).

3. A tangential flow filtration device according to claim 2, characterized in that: The four support blocks (8) are slidably connected in the two fixing grooves (5); Wherein, two bidirectional threaded rods (6) are rotatably connected between the front and rear inner walls of the two fixing grooves (5); Wherein, the two support blocks (8) are threadedly sleeved on the outer surface of the bidirectional threaded rod (6); The two support blocks (8) are located at two different thread sections of the bidirectional threaded rod (6).

4. A tangential flow filtration device according to claim 3, characterized in that: The lower surface of the support block (8) extends out of the lower surface of the fixing block (4) through the fixing groove (5); Wherein, four positioning blocks (9) are fixedly connected to the lower surfaces of four supporting blocks (8); The four support shafts (11) are rotatably connected to the outer surfaces of one side of the four positioning blocks (9) close to the membrane filter box (2) through bearings; The four wheels (10) are fixedly connected to the outer surfaces of the four supporting shafts (11).

5. A tangential flow filtration device according to claim 4, characterized in that: The tightening block (12) is in the shape of an isosceles triangle; Wherein, the four wheels (10) are slidably connected to the lower surfaces of the two tightening blocks (12); The front end of the bidirectional threaded rod (6) rotates and penetrates the front side surface of the fixing block (4).

6. A tangential flow filtration device according to claim 5, characterized in that: The two handles (7) are fixedly connected to the front ends of the two bidirectional threaded rods (6); Wherein, a plurality of sealing springs (13) are fixedly connected to the top wall of the cover (3); The fixing plate (15) is slidably sleeved in the cover (3), and the lower ends of the plurality of sealing springs (13) are fixedly connected to the upper surface of the fixing plate (15); Wherein, a rubber pad is arranged on the lower surface of the fixing plate (15).

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