Multi-stage filtration combined equipment for chemical reagent auxiliaries

Abstract

The utility model relates to the technical field of filters, and discloses multi-stage filtration combined equipment for chemical reagent auxiliaries. According to the scheme, the device comprises a supporting plate, a pressing plate, a first connecting plate, a second connecting plate and a supporting plate are sequentially installed on the front side of the supporting plate from top to bottom, a rough filtering tank is installed between the pressing plate and the first connecting plate, and a fine filtering tank is installed between the first connecting plate and the second connecting plate; an ultra-clean filtering tank is installed between the second connecting plate and the supporting plate, an internal thread sliding block is arranged on the rear side of the pressing plate, and a screw rod is in threaded connection with the interior of the internal thread sliding block. After the shifting block is moved to drive the plug pin to be separated from the supporting plate, the hand wheel can be reversely rotated to enable the pressing plate to move upwards, so that the rough filtering tank and the fine filtering tank can be unlocked at the same time, and a single group or multiple groups of filtering tanks can be conveniently and rapidly disassembled and assembled; therefore, the use convenience of the device is improved.

Description

Technical Field

[0001] This utility model belongs to the field of filter technology, specifically a multi-stage filtration device for chemical reagents and auxiliaries. Background Technology

[0002] The purity of chemical reagents and auxiliaries determines product quality and safety. Taking targeted drug synthesis processes as an example, trace impurities (such as bacteria, pyrogens, colloidal particles, etc.) may interfere with the activity of drug molecules or even cause adverse reactions. Therefore, the purity requirements for reagents and auxiliaries are extremely high, usually needing to be increased from the initial 95% to over 99.99%. Traditional single-stage filtration equipment is difficult to meet the needs of multi-stage purification, and multi-stage filtration technology has emerged to meet this need.

[0003] Multi-stage filtration systems achieve step-by-step purification by connecting filter units of different precisions in series. However, existing technologies still have the following problems: First, most multi-stage filtration devices adopt an integrated fixed structure, with each filter unit tightly integrated. When a filter element in a certain stage becomes clogged or fails, the entire device needs to be disassembled for maintenance, which is cumbersome and time-consuming. Second, the filter unit replacement process for some series-connected filtration devices is complex, requiring repeated disassembly and reassembly of sealing components with the help of specialized tools. Therefore, we propose a multi-stage filtration system for chemical reagents and auxiliaries. Utility Model Content

[0004] The purpose of this invention is to provide a multi-stage filtration device for chemical reagents and auxiliaries to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a multi-stage filtration device for chemical reagents and auxiliaries, comprising a support plate, a pressure plate, a first connecting plate, a second connecting plate, and a support plate sequentially installed from top to bottom on the front side of the support plate; a coarse filter tank installed between the pressure plate and the first connecting plate; a fine filter tank installed between the first connecting plate and the second connecting plate; and an ultra-clean filter tank installed between the second connecting plate and the support plate; an internally threaded slider is provided on the rear side of the pressure plate, a screw is screwed into the internally threaded slider, a worm gear is provided at the bottom of the screw, a worm is engaged on the rear side of the worm gear, a handwheel is provided on the left side of the worm, a lever is provided on the left side of the handwheel, a connecting block is provided on the right side of the lever, a pin and a high-strength spring are respectively provided on the front and rear sides of the connecting block, and a locking groove is opened on the rear side of the support plate, into which the pin is inserted.

[0006] Preferably, the support plate has a first countersunk hole at its top, the top of the coarse filter tank is inserted into the first countersunk hole, the first connecting plate has a second countersunk hole at its top, and a third countersunk hole at its bottom, the second and third countersunk holes are connected, the bottom of the coarse filter tank is inserted into the second countersunk hole, the top of the fine filter tank is inserted into the third countersunk hole, the second connecting plate has a fourth countersunk hole at its top, and a fifth countersunk hole at its bottom, the fourth and fifth countersunk holes are connected, the bottom of the fine filter tank is inserted into the fourth countersunk hole, the top of the ultra-clean filter tank is inserted into the fifth countersunk hole, the tray has a sixth countersunk hole at its top, and the bottom of the ultra-clean filter tank is inserted into the sixth countersunk hole.

[0007] Preferably, sealing rings are installed in the first, second, third, fourth, fifth, and sixth countersunk holes, a liquid inlet valve is provided at the top of the pressure plate and the liquid inlet valve is connected to the first countersunk hole, and a liquid drain valve is provided at the bottom of the support plate and the liquid drain valve is connected to the sixth countersunk hole.

[0008] Preferably, the bottom of the support plate is provided with a base plate, and a sliding groove and two sets of guide grooves are provided through the rear side of the support plate. The sliding groove is located between the two sets of guide grooves. Two sets of T-shaped guide blocks are evenly provided on the rear side of the pressure plate, the first connecting plate and the second connecting plate. The T-shaped guide blocks are set in the guide grooves. The support plate is fixedly set on the front side of the support plate. The pressure plate, the first connecting plate and the second connecting plate are all slidably set on the front side of the support plate.

[0009] Preferably, the internal threaded slider is disposed in the slide groove, two sets of first support sleeves are evenly sleeved on the outer side of the screw, and two sets of second support sleeves are evenly sleeved on the outer side of the worm, and the first support sleeves and the second support sleeves are evenly disposed on the rear side of the support plate.

[0010] Preferably, a first mounting groove is provided on the front side of the handwheel, and a second mounting groove is provided through the left side of the first mounting groove. The high-strength spring is fixedly disposed in the first mounting groove, the connecting block is slidably disposed in the first mounting groove and the second mounting groove, and the pin is slidably disposed in the second mounting groove.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: by rotating the handwheel in conjunction with the worm gear meshing with the worm wheel, the pressure plate can be pressed downward, thereby pressing the coarse filter tank between the pressure plate and the first connecting plate, the fine filter tank between the first and second connecting plates, and the ultra-clean filter tank between the second connecting plate and the support plate. Furthermore, when the handwheel is tightened, the high-strength spring drives the pin to insert into the locking groove of the support plate, thereby locking the position of the handwheel and the position of the pressure plate. Moreover, by utilizing the self-locking property of the worm wheel and worm, the installation stability of the coarse filter tank, fine filter tank, and ultra-clean filter tank can be effectively guaranteed.

[0012] After the movable lever separates the pin from the support plate, the handwheel can be rotated in the opposite direction to move the pressure plate upward. This allows the coarse filter tank and the fine filter tank to be unlocked simultaneously, enabling convenient and quick assembly and disassembly of single or multiple filter tanks. Furthermore, the lever is mounted on the handwheel, which improves the ease of use of the device. Attached Figure Description

[0013] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0014] In the attached diagram:

[0015] Figure 1 This is a schematic diagram of the structure of a multi-stage filtration device for chemical reagents and auxiliaries according to the present invention;

[0016] Figure 2 This is a left sectional view of a multi-stage filtration device for chemical reagents and auxiliaries according to the present invention.

[0017] Figure 3 This is a partial top cross-sectional view of a multi-stage filtration device for chemical reagents and auxiliaries according to the present invention.

[0018] In the diagram: 1. Support plate; 11. Pressure plate; 111. Base plate; 12. First connecting plate; 13. Second connecting plate; 14. Support plate; 15. Drain valve; 16. Inlet valve; 17. Coarse filter tank; 18. Fine filter tank; 19. Ultra-clean filter tank; 2. Sealing ring; 21. T-shaped guide block; 22. First support sleeve; 23. Second support sleeve; 24. Internal threaded slider; 25. Screw; 26. Worm gear; 27. Worm; 28. Handwheel; 3. Altering block; 31. Connecting block; 32. Pin; 33. High-strength spring. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figure 1-3A multi-stage filtration device for chemical reagents and auxiliaries includes a support plate 1. From top to bottom, a pressure plate 11, a first connecting plate 12, a second connecting plate 13, and a support plate 14 are sequentially installed on the front side of the support plate 1. A coarse filter tank 17 is installed between the pressure plate 11 and the first connecting plate 12. A fine filter tank 18 is installed between the first connecting plate 12 and the second connecting plate 13. An ultra-clean filter tank 19 is installed between the second connecting plate 13 and the support plate 14. An internally threaded slider 24 is fixedly installed on the rear side of the pressure plate 11. A screw 25 is screwed into the internal threaded slider 24. A worm gear 26 is fixedly installed at the bottom of the screw 25. A worm 27 meshes with the rear side of the worm gear 26. A handwheel 28 is fixedly installed on the left side of the support plate 1. A lever 3 is slidably installed on the left side of the handwheel 28. A connecting block 31 is fixedly installed on the right side of the lever 3. A pin 32 and a high-strength spring 33 are fixedly installed on the front and rear sides of the connecting block 31, respectively. A locking groove is opened on the rear side of the support plate 1. The pin 32 is inserted into the locking groove. The high-strength spring 33 pushes the connecting block 31 forward by its own rebound force. Then, the connecting block 31 drives the pin 32 forward to insert into the locking groove of the support plate 1, thereby locking the position of the handwheel 28. A first countersunk hole is opened through the top of the support plate 1. The top of the coarse filter tank 17 is inserted into the first countersunk hole. A second countersunk hole is formed at the top of the first connecting plate 12, and a third countersunk hole is formed at the bottom of the first connecting plate 12. The second and third countersunk holes are connected. The bottom of the coarse filter tank 17 is inserted into the second countersunk hole, and the top of the fine filter tank 18 is inserted into the third countersunk hole. A fourth countersunk hole is formed at the top of the second connecting plate 13, and a fifth countersunk hole is formed at the bottom of the second connecting plate 13. The fourth and fifth countersunk holes are connected. The bottom of the fine filter tank 18 is inserted into the fourth countersunk hole, and the top of the ultra-clean filter tank 19 is inserted into the fifth countersunk hole. A sixth countersunk hole is formed at the top of the support plate 14, and the bottom of the ultra-clean filter tank 19 is inserted into the sixth countersunk hole. The first, second, third, and fourth countersunk holes are connected. Sealing rings 2 are installed in the fourth, fifth, and sixth submersible holes to seal the gaps between the submersible holes and the filter tank. An inlet valve 16 is fixedly installed on the top of the pressure plate 11 and is connected to the first submersible hole. A drain valve 15 is fixedly installed on the bottom of the support plate 14. Chemical reagents and auxiliaries are injected into the coarse filter tank 17 through the inlet valve 16 for preliminary filtration. Then, the chemical reagents and auxiliaries flow down to the fine filter tank 18 for secondary filtration by their own weight. Finally, they flow down to the ultra-clean filter tank 19 for final filtration and are discharged through the drain valve 15, which is connected to the sixth submersible hole.

[0021] A base plate 111 is fixedly installed at the bottom of the support plate 1. A sliding groove and two sets of guide grooves are opened through the rear side of the support plate 1. The sliding groove is located between the two sets of guide grooves. Two sets of T-shaped guide blocks 21 are evenly fixedly installed on the rear sides of the pressure plate 11, the first connecting plate 12, and the second connecting plate 13, respectively. The T-shaped guide blocks 21 are slidably installed in the guide grooves. The support plate 14 is fixedly installed on the front side of the support plate 1. The pressure plate 11, the first connecting plate 12, and the second connecting plate 13 are all slidably installed on the front side of the support plate 1. The internally threaded slider 24 is slidably installed in the sliding groove. Two screws are evenly sleeved on the outer side of the screw 25. A first support sleeve 22 supports the rotation of the screw 25. Two sets of second support sleeves 23 are evenly sleeved on the outside of the worm 27, supporting the rotation of the worm 27. The first support sleeve 22 and the second support sleeve 23 are evenly fixedly arranged on the rear side of the support plate 1. A first mounting groove is opened on the front side of the handwheel 28. A second mounting groove is opened through the left side of the first mounting groove. A high-strength spring 33 is fixedly arranged in the first mounting groove. A connecting block 31 is slidably arranged in the first mounting groove and the second mounting groove. A pin 32 is slidably arranged in the second mounting groove.

[0022] Working principle: The T-shaped guide block 21 assists in the stable up-and-down movement of the pressure plate 11, the first connecting plate 12, and the second connecting plate 13. This allows the coarse filter tank 17 to be inserted between the pressure plate 11 and the first connecting plate 12, the fine filter tank 18 to be inserted between the first connecting plate 12 and the second connecting plate 13, and the ultra-clean filter tank 19 to be inserted between the second connecting plate 13 and the support plate 14. Rotating the handwheel 28 drives the worm gear 27, which in turn drives the worm wheel 26, which in turn drives the screw 25. The screw 25 then moves the internal threaded slider 24 downwards, which in turn moves the pressure plate 11 downwards. The downward pressure applied by the pressure plate 11 presses the coarse filter tank 17 between the pressure plate 11 and the first connecting plate 12, and the fine filter tank 18 between the first connecting plate 13 and the support plate 14. Between plate 12 and the second connecting plate 13, the ultra-clean filter tank 19 is pressed between the second connecting plate 13 and the support plate 14. When the handwheel 28 is tightened, the high-strength spring 33 uses its own rebound force to push the connecting block 31 forward, and then the connecting block 31 drives the pin 32 forward to insert into the locking groove of the support plate 1, thereby locking the position of the handwheel 28, and then locking the position of the pressure plate 11, thus ensuring the installation stability of the coarse filter tank 17, the fine filter tank 18 and the ultra-clean filter tank 19. The chemical reagents and auxiliaries are injected into the coarse filter tank 17 through the liquid inlet valve 16 for preliminary filtration. Then the chemical reagents and auxiliaries flow down into the fine filter tank 18 for secondary filtration by their own weight, and finally flow down into the ultra-clean filter tank 19 for final filtration by their own weight, and are discharged through the liquid drain valve 15.

[0023] When it is necessary to disassemble the coarse filter tank 17, the connecting block 31 is moved backward by moving the lever 3 backward, which in turn moves the pin 32 backward to separate it from the support plate 1. At this time, the handwheel 28 can be rotated in the opposite direction to move the pressure plate 11 upward to separate it from the coarse filter tank 17. In this way, the coarse filter tank 17 can be moved upward to separate it from the first connecting plate 12, thus completing the disassembly. When it is necessary to disassemble the fine filter tank 18, the first connecting plate 12 is moved upward to separate it from the top of the fine filter tank 18. Then, the fine filter tank 18 can be moved upward to separate it from the second connecting plate 13, thus completing the disassembly. Similarly, the second connecting plate 13 is moved upward to separate it from the top of the ultra-clean filter tank 19, thus moving the ultra-clean filter tank 19 upward to separate it from the support plate 14, thus completing the disassembly.

Claims

1. A multi-stage filtration device for chemical reagents and auxiliaries, characterized in that, The system includes a support plate (1), on the front side of which a pressure plate (11), a first connecting plate (12), a second connecting plate (13), and a support plate (14) are installed sequentially from top to bottom. A coarse filter tank (17) is installed between the pressure plate (11) and the first connecting plate (12), a fine filter tank (18) is installed between the first connecting plate (12) and the second connecting plate (13), and an ultra-clean filter tank (19) is installed between the second connecting plate (13) and the support plate (14). An internally threaded slider (24) is provided on the rear side of the pressure plate (11). A screw rod (25) is screwed into the inside of the block (24). A worm wheel (26) is provided at the bottom of the screw rod (25). A worm (27) is meshed on the rear side of the worm wheel (26). A handwheel (28) is provided on the left side of the worm (27). A lever (3) is provided on the left side of the handwheel (28). A connecting block (31) is provided on the right side of the lever (3). A pin (32) and a high-strength spring (33) are provided on the front and rear sides of the connecting block (31) respectively. A locking groove is provided on the rear side of the support plate (1). The pin (32) is inserted into the locking groove.

2. The multi-stage filtration device for chemical reagents and auxiliaries according to claim 1, characterized in that: The support plate (1) has a first recessed hole at the top, the top of the coarse filter tank (17) is inserted into the first recessed hole, the top of the first connecting plate (12) has a second recessed hole, the bottom of the first connecting plate (12) has a third recessed hole, the second recessed hole and the third recessed hole are connected, the bottom of the coarse filter tank (17) is inserted into the second recessed hole, the top of the fine filter tank (18) is inserted into the third recessed hole, the top of the second connecting plate (13) has a fourth recessed hole, the bottom of the second connecting plate (13) has a fifth recessed hole, the fourth recessed hole and the fifth recessed hole are connected, the bottom of the fine filter tank (18) is inserted into the fourth recessed hole, the top of the ultra-clean filter tank (19) is inserted into the fifth recessed hole, the top of the support plate (14) has a sixth recessed hole, and the bottom of the ultra-clean filter tank (19) is inserted into the sixth recessed hole.

3. The multi-stage filtration device for chemical reagents and auxiliaries according to claim 2, characterized in that: A sealing ring (2) is installed in the first, second, third, fourth, fifth and sixth countersunk holes. A liquid inlet valve (16) is provided on the top of the pressure plate (11), and the liquid inlet valve (16) is connected to the first countersunk hole. A liquid drain valve (15) is provided at the bottom of the support plate (14), and the liquid drain valve (15) is connected to the sixth countersunk hole.

4. The multi-stage filtration device for chemical reagents and auxiliaries according to claim 1, characterized in that: The bottom of the support plate (1) is provided with a base plate (111). The rear side of the support plate (1) is provided with a sliding groove and two sets of guide grooves. The sliding groove is located between the two sets of guide grooves. The rear sides of the pressure plate (11), the first connecting plate (12) and the second connecting plate (13) are respectively evenly provided with two sets of T-shaped guide blocks (21). The T-shaped guide blocks (21) are set in the guide grooves. The support plate (14) is fixedly set on the front side of the support plate (1). The pressure plate (11), the first connecting plate (12) and the second connecting plate (13) are all slidably set on the front side of the support plate (1).

5. The multi-stage filtration device for chemical reagents and auxiliaries according to claim 4, characterized in that: The internal threaded slider (24) is set in the groove, and two sets of first support sleeves (22) are evenly sleeved on the outside of the screw (25), and two sets of second support sleeves (23) are evenly sleeved on the outside of the worm (27). The first support sleeves (22) and the second support sleeves (23) are evenly arranged on the rear side of the support plate (1).

6. The multi-stage filtration device for chemical reagents and auxiliaries according to claim 5, characterized in that: The handwheel (28) has a first mounting groove on its front side, and a second mounting groove is provided through the left side of the first mounting groove. The high-strength spring (33) is fixedly installed in the first mounting groove, the connecting block (31) is slidably installed in the first mounting groove and the second mounting groove, and the pin (32) is slidably installed in the second mounting groove.

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