Vertical two-stage filter

Abstract

The utility model relates to the technical field of biochemical reagent production, and provides a vertical two-stage filter which comprises a mounting frame, a centrifugal barrel rotationally connected to the bottom end of the inner side of the mounting frame, a motor fixedly mounted at the bottom of the mounting frame, an output shaft of the motor fixedly connected with the bottom of the centrifugal barrel, and a filtering mechanism arranged on the inner side of the centrifugal barrel. The filtering mechanism comprises an annular plate, the inner ring of the bottom surface of the annular plate is fixedly connected with a first-stage filter element, the outer ring of the bottom surface of the annular plate is fixedly connected with a second-stage filter element, the center position of the bottom of the first-stage filter element is provided with a liquid discharging piece used for guiding out impurities in the first-stage filter element and the second-stage filter element, and the two ends of the annular plate are fixedly connected with clamping blocks; a positioning mechanism is arranged at the top of the centrifugal barrel. According to the utility model, impurities filtered on the inner sides of the first-stage filter element and the second-stage filter element can be discharged through the liquid discharging piece, so that the problem that impurities on the inner side of a second-stage filter membrane cannot be discharged in the prior art is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of biochemical reagent production, in particular to a vertical double-stage filter. Background Art

[0002] Biochemical reagents refer to biological materials or organic compounds related to life science research, as well as reagents used in clinical diagnosis and medical research. Due to the broad scope and rapid development of life science, such reagents are of various types and complex in nature. Biochemical reagents have certain requirements for their purity and technology depending on their different uses. Therefore, in the manufacturing process of biochemical reagents, biochemical reagents need to be filtered and purified.

[0003] After searching, the Chinese patent publication number CN214415800U discloses "a two-stage centrifugal filter device for filtering biochemical reagents, comprising: a body, the body is a hollow cylinder; a centrifugal bucket, the centrifugal bucket is rotatably arranged in the body around its own axis, a filter bucket is arranged in the centrifugal bucket, the filter bucket can rotate with the centrifugal bucket, the bottom wall of the filter bucket is sealed and connected with an annular filter membrane extending upward, the filter membrane includes a primary filter membrane located on the inside and a secondary filter membrane located on the outside, the pore size of the primary filter membrane is larger than the pore size of the secondary filter membrane, and the secondary filter membrane forms the side wall of the filter bucket";

[0004] The above patent effectively improves the filtering effect by arranging a primary filter membrane and a secondary filter membrane inside the filter barrel to filter the liquid to be filtered twice, wherein the first liquid outlet can discharge the liquid after the two filtrations, and the second liquid outlet can discharge the impurities filtered by the primary filter membrane. However, the bottom ends of the primary filter membrane and the secondary filter membrane are fixedly sealed, and the impurities filtered by the secondary filter membrane will remain in the gap between the primary filter membrane and the secondary filter membrane and cannot be discharged. As the impurities accumulate, the secondary filter membrane will be completely blocked and the filtering work cannot be realized. Utility Model Content

[0005] The utility model provides a vertical double-stage filter, which solves the problem in the prior art that impurities inside the secondary filter membrane cannot be discharged.

[0006] The technical solution of the utility model is as follows: a vertical double-stage filter, comprising a mounting frame, the bottom end of the inner side of the mounting frame is rotatably connected to a centrifugal bucket, a motor is fixedly installed at the bottom of the mounting frame, the output shaft of the motor is fixedly connected to the bottom of the centrifugal bucket, a filtering mechanism is arranged on the inner side of the centrifugal bucket, the filtering mechanism comprises an annular plate, the inner ring of the bottom surface of the annular plate is fixedly connected to a primary filter core, the outer ring of the bottom surface of the annular plate is fixedly connected to a secondary filter core, a drainage piece for draining out impurities inside the primary filter core and the secondary filter core is arranged at the center position of the bottom of the primary filter core, blocks are fixedly connected to both ends of the annular plate, and a positioning mechanism for positioning and installing the block is arranged on the top of the centrifugal bucket.

[0007] Preferably, one end of the bottom of the centrifugal bucket is fixedly connected with a liquid outlet pipe communicating with the interior of the centrifugal bucket, and a corresponding control valve is fixedly installed on the liquid outlet pipe.

[0008] Preferably, the vertical cross-sections of the primary filter core and the secondary filter core are both U-shaped structures, and the primary filter core and the secondary filter core are concentrically arranged.

[0009] Preferably, the drainage component includes a liquid guide tube, the top end of the liquid guide tube penetrates the secondary filter element and extends to the inner side of the secondary filter element, the top end of the liquid guide tube is fixedly connected to the primary filter element and communicates with the interior of the primary filter element, a plurality of through holes are opened in the middle of the liquid guide tube, and a plurality of the through holes are located in the gap between the primary filter element and the secondary filter element, and the bottom end of the liquid guide tube is fixedly connected to a drainage tube vertically arranged with the liquid guide tube.

[0010] Preferably, the discharge member also includes a sealing piston, which is slidably connected to the inner side of the catheter tube, and the bottom of the sealing piston is rotatably connected to a screw rod, the bottom end of the screw rod penetrates the bottom wall of the catheter tube and extends to the bottom of the catheter tube, the screw rod is threadedly connected to the bottom wall of the catheter tube, and the bottom of the screw rod is fixedly connected to a rotating cap.

[0011] Preferably, the diameter of the sealing piston is the same as the inner diameter of the catheter, and the length of the sealing piston is greater than the diameter of the through hole.

[0012] Preferably, the length of the screw is greater than the length of the catheter, and the diameter of the screw is smaller than the inner diameter of the catheter.

[0013] Preferably, the positioning mechanism includes a fixing plate, which is fixedly connected to the top of the centrifugal barrel, and both ends of the inner side of the fixing plate are provided with slots that slidably cooperate with the card block, the inner sides of the two card slots are slidably connected with plug rods that penetrate the inner walls of the slots, one ends of the two plug rods are inserted into the ends of the corresponding card blocks, the other ends of the two plug rods are fixedly connected with pull blocks, the middle parts of the two plug rods are fixedly connected with limiting blocks, the inner walls of the two card slots are provided with storage grooves that match the limit blocks, one ends of the two plug rods are sleeved with springs, one ends of the two springs are in contact with the inner walls of the corresponding storage slots, and the other ends of the two springs are in contact with the corresponding limit blocks.

[0014] Preferably, a slot matching the insertion rod is formed at the end of the clamping block, and the insertion rod is slidably matched with the corresponding slot.

[0015] Preferably, a cleaning mechanism is provided on the top of the mounting frame, and the cleaning mechanism includes a cylinder, and the cylinder is fixedly connected to the top wall of the mounting frame, and the output end of the cylinder is fixedly connected to a connecting plate concentrically arranged with the centrifugal barrel, and the bottom of the connecting plate is fixedly connected to a brush rod, and the bristle part of the brush rod contacts the inner wall of the first-stage filter element.

[0016] The technical effects and advantages of the utility model are as follows: the centrifugal barrel can be driven to rotate by a motor, which makes the primary filter element and the secondary filter element centrifugally rotate synchronously, so that the primary filter element and the secondary filter element filter the filtrate twice in turn, and the impurities filtered inside the primary filter element and the secondary filter element will be discharged through the drainage piece, which can avoid the problem of blockage caused by the accumulation of impurities inside the primary filter element and the secondary filter element. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the structure of a vertical double-stage filter of the utility model Figure 1 .

[0018] Figure 2 A schematic diagram of the structure of a vertical double-stage filter of the utility model Figure 2 .

[0019] Figure 3 It is a structural schematic diagram of the filtering mechanism of the utility model.

[0020] Figure 4 for Figure 3 Schematic diagram of the enlarged structure of part A.

[0021] Figure 5 It is a structural schematic diagram of the positioning mechanism of the utility model.

[0022] Figure 6 It is a structural schematic diagram of the cleaning mechanism of the utility model.

[0023] The accompanying drawings are marked as follows: 1. mounting frame; 2. centrifugal barrel; 21. liquid outlet pipe; 3. motor; 4. filtering mechanism; 41. annular plate; 42. primary filter element; 43. secondary filter element; 44. drainage member; 441. liquid guide tube; 442. liquid discharge pipe; 443. sealing piston; 444. through hole; 445. screw rod; 446. rotating cap; 45. block; 46. slot; 5. positioning mechanism; 51. fixing plate; 52. insertion rod; 53. pulling block; 54. limiting block; 55. storage slot; 56. spring; 57. slot; 6. cleaning mechanism; 61. cylinder; 62. connecting plate; 63. brush rod. DETAILED DESCRIPTION

[0024] The following will be combined with 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 of 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.

[0025] Reference Figure 1 - Figure 3 The utility model provides a vertical double-stage filter, including a mounting frame 1, a centrifugal bucket 2 is rotatably connected to the bottom end of the inner side of the mounting frame 1, a motor 3 is fixedly installed at the bottom of the mounting frame 1, the output shaft of the motor 3 is fixedly connected to the bottom of the centrifugal bucket 2, one end of the bottom of the centrifugal bucket 2 is fixedly connected to a liquid outlet pipe 21 communicating with the inside of the centrifugal bucket 2, and a corresponding control valve is fixedly installed on the liquid outlet pipe 21; a filtering mechanism 4 is arranged on the inner side of the centrifugal bucket 2, and the filtering mechanism 4 includes an annular plate 41, and the inner ring of the bottom surface of the annular plate 41 is fixedly connected with a The outer ring of the bottom surface of the annular plate 41 is fixedly connected with a secondary filter element 43, the vertical cross-sections of the primary filter element 42 and the secondary filter element 43 are both U-shaped structures, the primary filter element 42 and the secondary filter element 43 are concentrically arranged, and a drainage piece 44 for draining out the internal impurities of the primary filter element 42 and the secondary filter element 43 is arranged at the center of the bottom of the primary filter element 42, both ends of the annular plate 41 are fixedly connected with a clamping block 45, and the top of the centrifugal barrel 2 is provided with a positioning mechanism 5 for positioning and installing the clamping block 45.

[0026] The centrifugal barrel 2 can be driven to rotate by the motor 3, so that the primary filter element 42 and the secondary filter element 43 can be centrifugally rotated synchronously, and the primary filter element 42 and the secondary filter element 43 can filter the filtrate twice in sequence. The impurities filtered inside the primary filter element 42 and the secondary filter element 43 will be discharged through the drain 44, which can avoid the problem of blockage caused by accumulation of impurities inside the primary filter element 42 and the secondary filter element 43.

[0027] Reference Figure 4 The drainage member 44 includes a liquid guide tube 441, the top of which penetrates the secondary filter core 43 and extends to the inner side of the secondary filter core 43, the top of which is fixedly connected to the primary filter core 42 and communicates with the inside of the primary filter core 42, a plurality of through holes 444 are provided in the middle of the liquid guide tube 441, and the plurality of through holes 444 are located in the gap between the primary filter core 42 and the secondary filter core 43, the bottom of the liquid guide tube 441 is fixedly connected to a liquid drainage tube 442 vertically arranged therewith, and a sealing piston 44 is slidably connected to the inner side of the liquid guide tube 441. 3. The bottom of the sealing piston 443 is rotatably connected with a screw 445, the bottom end of the screw 445 penetrates the bottom wall of the liquid guiding tube 441 and extends to the bottom of the liquid guiding tube 441, the screw 445 is threadedly connected to the bottom wall of the liquid guiding tube 441, and the bottom of the screw 445 is fixedly connected with a rotating cap 446, the diameter of the sealing piston 443 is the same as the inner diameter of the liquid guiding tube 441, the length of the sealing piston 443 is larger than the diameter of the through hole 444, the length of the screw 445 is larger than the length of the liquid guiding tube 441, and the diameter of the screw 445 is smaller than the inner diameter of the liquid guiding tube 441.

[0028] After the filtration is completed, the annular plate 41 is separated from the centrifugal barrel 2 and the primary filter element 42 and the secondary filter element 43 are taken out from the centrifugal barrel 2, and then the rotating cap 446 is rotated to rotate the screw 445, which allows the screw 445 to drive the sealing piston 443 to slide upward until the sealing piston 443 completely slides into the primary filter element 42 and separates from the inner wall of the liquid guide tube 441. At this time, the liquid impurities on the inner side of the primary filter element 42 will be introduced into the liquid guide tube 441, and at the same time, the liquid impurities on the inner side of the secondary filter element 43 will pass through the through hole 444 and be introduced into the liquid guide tube 441. Finally, the liquid impurities inside the primary filter element 42 and the secondary filter element 43 are discharged through the drain pipe 442, effectively solving the problem of the filter holes of the primary filter element 42 and the secondary filter element 43 being blocked.

[0029] Reference Figure 5The positioning mechanism 5 includes a fixing plate 51, which is fixedly connected to the top of the centrifugal barrel 2. Both ends of the inner side of the fixing plate 51 are provided with slots 57 that slidably cooperate with the block 45. The inner sides of the two slots 57 are slidably connected with a plug rod 52 that penetrates the inner wall of the slot 57. The end of the block 45 is provided with a slot 46 that matches the plug rod 52. The plug rod 52 slidably cooperates with the corresponding slot 46. The other ends of the two plug rods 52 are fixedly connected with a pull block 53. The middle parts of the two plug rods 52 are fixedly connected with a limiting block 54. The inner walls of the two slots 57 are provided with receiving slots 55 that match the limiting block 54. One end of the two plug rods 52 is sleeved with a spring 56. One end of the two springs 56 contacts the inner wall of the corresponding receiving slot 55, and the other end of the two springs 56 contacts the corresponding limiting block 54. During installation, the two pull blocks 53 are pulled outward to make the two plug rods 52 slide toward the outside of the fixed plate 51, which makes the limit block 54 slide completely into the storage groove 55. At this time, the two springs 56 are compressed to accumulate elastic potential energy, and then the primary filter element 42 and the secondary filter element 43 at the bottom of the annular plate 41 are inserted into the centrifugal bucket 2, and the two clamping blocks 45 cooperate with the corresponding clamping grooves 57. Finally, the pull block 53 is released. At this time, the spring 56 releases the potential energy to make the two plug rods 52 slide in the opposite direction and cooperate with the slots 46 at the ends of the clamping blocks 45. This realizes the positioning installation of the annular plate 41, so that the primary filter element 42 and the secondary filter element 43 can rotate with the centrifugal bucket 2. The entire structure can realize the rapid installation of the primary filter element 42 and the secondary filter element 43. Similarly, by pulling the two pull blocks 53 outward to make the two plug rods 52 disengage from the clamping blocks 45, the primary filter element 42 and the secondary filter element 43 can also be disassembled.

[0030] Reference Figure 6 A cleaning mechanism 6 is provided on the top of the mounting frame 1. The cleaning mechanism 6 includes a cylinder 61, which is fixedly connected to the top wall of the mounting frame 1. The output end of the cylinder 61 is fixedly connected to a connecting plate 62 which is concentrically arranged with the centrifugal bucket 2. The bottom of the connecting plate 62 is fixedly connected to a brush rod 63, and the brush part of the brush rod 63 contacts the inner wall of the primary filter core 42. By controlling the cylinder 61 to move the connecting plate 62 downward, the brush rod 63 is inserted into the inner side of the primary filter core 42 and contacts the inner wall of the primary filter core 42. When the primary filter core 42 rotates with the centrifugal bucket 2, the brush rod 63 rotates relatively with the primary filter core 42, so that the brush rod 63 can clean up the large volume impurities attached to the inner wall of the primary filter core 42, and prevent the filter holes of the primary filter core 42 from being blocked by large volume impurities.

[0031] Working principle of the utility model: during installation, the two pull blocks 53 are pulled outward to make the two plug rods 52 slide to the outside of the fixed plate 51, so that the limit block 54 completely slides into the receiving groove 55, at this time, the two springs 56 are compressed to accumulate elastic potential energy, and then the primary filter element 42 and the secondary filter element 43 at the bottom of the annular plate 41 are inserted into the centrifugal barrel 2, and the two clamping blocks 45 cooperate with the corresponding clamping grooves 57, and finally the pull block 53 is released, at this time the spring 56 releases the potential energy to make the two plug rods 52 slide in the opposite direction and cooperate with the slots 46 at the ends of the clamping blocks 45, thus realizing the positioning installation of the annular plate 41;

[0032] During operation, the centrifugal barrel 2 can be driven to rotate by the motor 3, which makes the primary filter element 42 and the secondary filter element 43 rotate centrifugally synchronously, so that the primary filter element 42 and the secondary filter element 43 filter the filtrate twice in sequence; after the filtration is completed, the annular plate 41 is separated from the centrifugal barrel 2 and the primary filter element 42 and the secondary filter element 43 are taken out from the centrifugal barrel 2, and then the rotating cap 446 is rotated to rotate the screw 445, so that the screw 445 can drive the sealing piston 443 to slide upward until the sealing piston 443 completely slides into the primary filter element 42 and is separated from the inner wall of the liquid guide tube 441. At this time, the liquid impurities inside the primary filter element 42 will be introduced into the liquid guide tube 441, and the liquid impurities inside the secondary filter element 43 will pass through the through hole 444 and be introduced into the liquid guide tube 441. Finally, the liquid impurities inside the primary filter element 42 and the secondary filter element 43 are discharged through the drain pipe 442, effectively solving the problem of the filter holes of the primary filter element 42 and the secondary filter element 43 being blocked.

[0033] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A vertical double-stage filter, comprising a mounting frame (1), wherein the bottom end of the inner side of the mounting frame (1) is rotatably connected to a centrifugal bucket (2), a motor (3) is fixedly mounted on the bottom of the mounting frame (1), and an output shaft of the motor (3) is fixedly connected to the bottom of the centrifugal bucket (2), characterized in that: A filtering mechanism (4) is arranged inside the centrifugal barrel (2), and the filtering mechanism (4) comprises an annular plate (41), the inner circle of the bottom surface of the annular plate (41) is fixedly connected to a primary filter core (42), the outer circle of the bottom surface of the annular plate (41) is fixedly connected to a secondary filter core (43), a drain piece (44) for draining impurities inside the primary filter core (42) and the secondary filter core (43) is arranged at the center of the bottom of the primary filter core (42), a clamping block (45) is fixedly connected to both ends of the annular plate (41), and a positioning mechanism (5) for positioning and installing the clamping block (45) is arranged at the top of the centrifugal barrel (2).

2. A vertical double-stage filter according to claim 1, characterized in that: One end of the bottom of the centrifugal bucket (2) is fixedly connected to a liquid outlet pipe (21) communicating with the interior of the centrifugal bucket (2), and a corresponding control valve is fixedly mounted on the liquid outlet pipe (21).

3. A vertical double-stage filter according to claim 1, characterized in that: The vertical cross-sections of the primary filter core (42) and the secondary filter core (43) are both U-shaped structures, and the primary filter core (42) and the secondary filter core (43) are concentrically arranged.

4. A vertical double-stage filter according to claim 1, characterized in that: The liquid discharge member (44) comprises a liquid guide tube (441), the top end of the liquid guide tube (441) penetrates the secondary filter core (43) and extends to the inner side of the secondary filter core (43), the top end of the liquid guide tube (441) is fixedly connected to the primary filter core (42) and communicates with the interior of the primary filter core (42), a plurality of through holes (444) are provided in the middle of the liquid guide tube (441), the plurality of through holes (444) are located in the gap between the primary filter core (42) and the secondary filter core (43), and the bottom end of the liquid guide tube (441) is fixedly connected to a liquid discharge tube (442) vertically arranged with the liquid guide tube (441).

5. A vertical double-stage filter according to claim 4, characterized in that: The liquid discharge member (44) further comprises a sealing piston (443), wherein the sealing piston (443) is slidably connected to the inner side of the liquid guiding tube (441), and the bottom of the sealing piston (443) is rotatably connected to a screw rod (445), the bottom end of the screw rod (445) penetrates the bottom wall of the liquid guiding tube (441) and extends to the bottom of the liquid guiding tube (441), the screw rod (445) is threadedly connected to the bottom wall of the liquid guiding tube (441), and the bottom of the screw rod (445) is fixedly connected to a rotating cap (446).

6. A vertical double-stage filter according to claim 5, characterized in that: The diameter of the sealing piston (443) is the same as the inner diameter of the liquid guiding tube (441), and the length of the sealing piston (443) is greater than the diameter of the through hole (444).

7. A vertical double-stage filter according to claim 5, characterized in that: The length of the screw rod (445) is greater than the length of the liquid guiding tube (441), and the diameter of the screw rod (445) is smaller than the inner diameter of the liquid guiding tube (441).

8. A vertical double-stage filter according to claim 1, characterized in that: The positioning mechanism (5) comprises a fixing plate (51), the fixing plate (51) being fixedly connected to the top of the centrifugal bucket (2), the inner sides of the fixing plate (51) being provided with slots (57) for slidably cooperating with the block (45), the inner sides of the two slots (57) being slidably connected with plug rods (52) penetrating the inner walls of the slots (57), one end of the two plug rods (52) being plugged into the end of the corresponding block (45), and the other end of the two plug rods (52) being inserted into the end of the corresponding block (45), and the other end of the two plug rods (52) being inserted into the end of the corresponding block (45). Both are fixedly connected with a pulling block (53), the middle parts of the two insertion rods (52) are fixedly connected with a limiting block (54), the inner walls of the two clamping grooves (57) are provided with a receiving groove (55) matching with the limiting block (54), one end of the two insertion rods (52) is sleeved with a spring (56), one end of the two springs (56) contacts with the inner wall of the corresponding receiving groove (55), and the other end of the two springs (56) contacts with the corresponding limiting block (54).

9. A vertical double-stage filter according to claim 8, characterized in that: A slot (46) matching the insertion rod (52) is provided at the end of the clamping block (45), and the insertion rod (52) is slidably matched with the corresponding slot (46).

10. A vertical double-stage filter according to claim 1, characterized in that: A cleaning mechanism (6) is arranged on the top of the mounting frame (1), and the cleaning mechanism (6) comprises a cylinder (61), and the cylinder (61) is fixedly connected to the top wall of the mounting frame (1); the output end of the cylinder (61) is fixedly connected to a connecting plate (62) arranged concentrically with the centrifugal bucket (2); the bottom of the connecting plate (62) is fixedly connected to a brush rod (63), and the brush portion of the brush rod (63) contacts the inner wall of the primary filter element (42).

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