Microbial limit filtering device

Abstract

The utility model provides a microbial limit filtering device, belongs to the technical field of filtering, and solves the technical problems that the center of a filtering membrane is easy to collapse, so that fluid is not uniformly distributed in the filtering process, the interception effect of microorganisms is influenced, and the microorganisms are possibly not effectively filtered. A microbial limit filtering device comprises a base, two bottom cylinders are fixedly connected to the top of the base, filtering membranes are arranged in the two bottom cylinders, pressing rings are slidably connected to the tops of the two bottom cylinders, supporting plates are rotatably connected to the interiors of multiple storage grooves, and rollers are rotatably connected to the ends, close to the filtering membranes, of the multiple supporting plates. The other ends of the multiple supporting plates are all provided with adjusting mechanisms used for adjusting the roller, the multiple clamping plates are annularly and evenly arranged, and one sides of the multiple clamping plates are all provided with supporting mechanisms used for supporting the clamping plates. According to the utility model, through the arrangement of the roller, the phenomenon of collapse of the filter membrane in the installation process can be avoided.

Description

Technical Field

[0001] This utility model belongs to the field of filtration technology, and relates to microorganisms, particularly a microbial limit filtration device. Background Technology

[0002] Microbial limit filtration devices are used to remove microbial contaminants from liquids. Widely used in industries such as pharmaceuticals, food, and biotechnology, these devices effectively intercept bacteria, fungi, and other microorganisms within a specific pore size range using a fine filter membrane, thus separating the microorganisms from the test liquid and facilitating microbial culture and detection. Their design and use must adhere to good manufacturing practices to ensure filtration efficiency and reliability, thereby achieving optimal protection in practical applications.

[0003] However, some existing microbial limit filtration devices are prone to central collapse of the filter membrane during use, which leads to uneven fluid distribution during filtration and affects the retention of microorganisms, potentially resulting in ineffective filtration. Therefore, this problem needs to be solved. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a microbial limit filtration device. The technical problem this invention aims to solve is that the filter membrane is prone to collapse at the center, which leads to uneven fluid distribution during the filtration process, thereby affecting the retention effect of microorganisms and potentially causing microorganisms to fail to be effectively filtered.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A microbial limit filtration device includes a base with two bottom cylinders fixedly connected to the top of the base. Each bottom cylinder contains a filter membrane. A pressure ring is slidably connected to the top of each bottom cylinder, and both pressure rings cooperate with the filter membrane. Each pressure ring has a connecting mechanism for connecting the bottom cylinders. Multiple receiving slots are evenly arranged in a ring at the bottom of each pressure ring. A support plate is rotatably connected inside each receiving slot. A roller is rotatably connected to one end of each support plate near the filter membrane. An adjustment mechanism for adjusting the roller is provided at the other end of each support plate. Multiple clamping plates are evenly arranged in a ring at the top of the pressure ring. A support mechanism for supporting each clamping plate is provided on one side. The roller arrangement prevents the filter membrane from collapsing during installation.

[0007] As a further embodiment of this utility model, the connecting mechanism includes a nut, which is rotatably sleeved on the surface of the pressure ring. A limiting groove is formed on the top of the nut, and a limiting ring is slidably connected inside the limiting groove. The limiting ring is fixedly connected to the top of the pressure ring. A threaded groove is formed on the surface of the bottom cylinder near the pressure ring. The threaded groove and the nut are mutually fitted. Multiple positioning grooves are formed on the top of the pressure ring, and the multiple positioning grooves are evenly arranged in a ring. Positioning posts are slidably connected to the bottom of each of the multiple positioning grooves, and the multiple positioning posts are fixedly connected to the top of the bottom cylinder. By setting the nut, the pressure ring and the bottom cylinder can be connected.

[0008] As a further embodiment of this utility model, the adjusting mechanism includes two slide grooves, which are symmetrically opened inside the receiving groove. A rotating shaft is rotatably connected inside each of the two slide grooves. The two rotating shafts are fixedly connected to both sides of the support plate. A torsion spring is sleeved on the surface of each of the two rotating shafts. One end of each torsion spring is fixedly connected to one side of the slide groove, and the other end of each torsion spring is fixedly connected to one side of the support plate. The roller can be adjusted by the torsion springs.

[0009] As a further embodiment of this utility model, the support mechanism includes a fixed ring, which is fixedly connected to the top of the pressure ring. Two support rods are slidably connected to the surface of the fixed ring near the clamping plate. Both support rods are fixedly connected to one side of the clamping plate, and the other end of each support rod is fixedly connected to a base. Tension springs are sleeved on the surface of each support rod near the base. One end of each tension spring is fixedly connected to one side of the base, and the other end of each tension spring is fixedly connected to one side of the fixed ring. By setting up the support rods, the clamping plate can be supported.

[0010] The beneficial effects of this utility model are as follows:

[0011] 1. This utility model employs a technique of pulling the filter membrane with rollers, which avoids the phenomenon of the filter membrane collapsing during installation. This effectively solves the problem that the filter membrane is prone to collapse at the center, resulting in uneven fluid distribution during filtration and affecting the retention of microorganisms, potentially leading to ineffective filtration. A roller is installed at the bottom of the pressure ring, and the roller is lower than the pressure ring. During the installation process, the roller will first contact the filter membrane. Because the roller is connected to the pressure ring through a torsion spring, when the roller rolls on the surface of the filter membrane, it will also pull it, preventing the phenomenon of the filter membrane collapsing at the center. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of a microbial limit filtration device proposed in this utility model.

[0013] Figure 2 This is an exploded structural diagram of a microbial limit filtration device proposed in this utility model;

[0014] Figure 3 This is a schematic diagram of the connection mechanism of a microbial limit filtration device proposed in this utility model;

[0015] Figure 4 This is a schematic diagram of the adjustment mechanism of a microbial limit filtration device proposed in this utility model;

[0016] Figure 5 for Figure 4 Enlarged structural diagram at point A in the diagram;

[0017] Figure 6 This is a schematic diagram of the support mechanism of a microbial limit filtration device proposed in this utility model.

[0018] In the diagram: 1. Base; 2. Bottom cylinder; 3. Pressure ring; 4. Fixing ring; 201. Filter membrane; 202. Threaded groove; 203. Positioning post; 301. Limiting ring; 302. Positioning groove; 303. Nut; 304. Limiting groove; 305. Storage groove; 306. Slide groove; 307. Support plate; 308. Roller; 309. Rotating shaft; 310. Torsion spring; 401. Clamping plate; 402. Support rod; 403. Chassis; 404. Tension 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 of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0020] Reference Figure 1 - Figure 6A microbial limit filtration device includes a base 1, with two bottom cylinders 2 fixedly connected to the top of the base 1. Each bottom cylinder 2 contains a filter membrane 201. A pressure ring 3 is slidably connected to the top of each bottom cylinder 2, and both pressure rings 3 cooperate with the filter membrane 201. Each pressure ring 3 has a connecting mechanism for connecting the bottom cylinders 2 on its surface. Multiple storage slots 305 are formed at the bottom of the pressure rings 3, and these slots 305 are evenly arranged in a ring. Support plates 307 are rotatably connected inside each of the multiple storage slots 305. Each plate 307 is rotatably connected to a roller 308 near the end of the filter membrane 201. The other end of each of the multiple support plates 307 is provided with an adjustment mechanism for adjusting the roller 308. The top of the pressure ring 3 is provided with multiple clamping plates 401, which are arranged in a ring and are uniformly arranged. The clamping plates 401 can be used to clamp and fix the filter cup. Each side of the multiple clamping plates 401 is provided with a support mechanism for supporting the clamping plates 401. The roller 308 can prevent the filter membrane 201 from collapsing during installation.

[0021] Preferably, the connecting mechanism includes a nut 303, which is rotatably sleeved on the surface of the pressure ring 3. A limiting groove 304 is formed on the top of the nut 303, and a limiting ring 301 is slidably connected inside the limiting groove 304. The limiting ring 301 is fixedly connected to the top of the pressure ring 3. A threaded groove 202 is formed on the surface of the bottom cylinder 2 near the pressure ring 3. The threaded groove 202 and the nut 303 are mutually matched. Multiple positioning grooves 302 are formed on the top of the pressure ring 3, and the multiple positioning grooves 302 are evenly arranged in a ring. Positioning pins 203 are slidably connected to the bottom of each of the multiple positioning grooves 302. The setting of the positioning pins 203 can ensure that the nut 303 can move normally. The multiple positioning pins 203 are fixedly connected to the top of the bottom cylinder 2. The setting of the nut 303 can connect the pressure ring 3 and the bottom cylinder 2.

[0022] Preferably, the adjustment mechanism includes two slides 306, which are symmetrically arranged inside the receiving groove 305. A rotating shaft 309 is rotatably connected inside each of the two slides 306. The two rotating shafts 309 are fixedly connected to both sides of the support plate 307. A torsion spring 310 is sleeved on the surface of each of the two rotating shafts 309. One end of each torsion spring 310 is fixedly connected to one side of the slide 306, and the other end of each torsion spring 310 is fixedly connected to one side of the support plate 307. The roller 308 can be adjusted by the torsion springs 310.

[0023] Preferably, the support mechanism includes a fixing ring 4, which is fixedly connected to the top of the pressure ring 3. Two support rods 402 are slidably connected to the surface of the fixing ring 4 near the clamping plate 401. Both support rods 402 are fixedly connected to one side of the clamping plate 401, and the other end of each support rod 402 is fixedly connected to a base plate 403. Tension springs 404 are sleeved on the surface of each support rod 402 near the base plate 403. The clamping plate 401 can be constrained by the tension springs 404. One end of each tension spring 404 is fixedly connected to one side of the base plate 403, and the other end of each tension spring 404 is fixedly connected to one side of the fixing ring 4. The clamping plate 401 can be supported by the support rods 402.

[0024] Working principle: When installing the filter membrane 201, it is first placed at the top of the bottom cylinder 2, and then the pressure ring 3 is connected to the bottom cylinder 2. A positioning post 203 is installed at the top of the bottom cylinder 2, and the positioning post 203 cooperates with the pressure ring 3 to prevent the pressure ring 3 from shifting during installation. A roller 308 is installed at the bottom of the pressure ring 3, and the roller 308 is lower than the pressure ring 3. Therefore, during the installation of the pressure ring 3, the roller 308 will contact the filter membrane 201 first. Because the roller 308 is set at an inclination, After the roller 308 contacts the filter membrane 201, the roller 308 moves towards the positioning post 203 by pressing the pressure ring 3. A support plate 307 is installed on the top of the roller 308, and the support plate 307 is connected to the pressure ring 3 by a torsion spring 310. Thus, when the roller 308 rolls on the surface of the filter membrane 201, it will also pull on it to prevent the center of the filter membrane 201 from collapsing. After the pressure ring 3 moves into place, it is connected to the bottom cylinder 2 by the nut 303 on the surface of the pressure ring 3 to achieve the purpose of fixing.

[0025] 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 microbial limit filtration device comprising a base (1), characterized in that, The base (1) top fixedly connected with two bottom cylinder (2), two the bottom cylinder (2) inside is provided with filter membrane (201), two the bottom cylinder (2) top is slidably connected with the compression ring (3), and two compression rings (3) are matched with filter membrane (201), two the compression ring (3) surface is equipped with the connecting mechanism for connecting bottom cylinder (2), the compression ring (3) bottom is provided with a plurality of storage grooves (305), and a plurality of storage grooves (305) are evenly arranged in annular, a plurality of the storage groove (305) inside is rotatably connected with the supporting plate (307), a plurality of the supporting plate (307) is rotatably connected with the roller (308) at filter membrane (201) one end, a plurality of the supporting plate (307) the other end is provided for adjusting the adjusting mechanism of roller (308), the compression ring (3) top is provided with a plurality of clamping plates (401), and a plurality of clamping plates (401) are evenly arranged in annular, a plurality of the clamping plate (401) one side is equipped with the support mechanism for supporting clamping plate (401).

2. The microbial limit filtration device of claim 1, wherein, The connecting mechanism includes a nut (303), the nut (303) is rotatably connected to the surface of the compression ring (3), the nut (303) top is provided with a limiting groove (304), the limiting groove (304) is slidably connected with a limiting ring (301), the limiting ring (301) is fixedly connected to the top of the compression ring (3), the bottom cylinder (2) is provided with a threaded groove (202) on the surface near the compression ring (3).

3. The microbial limit filtration device of claim 2, wherein, The threaded groove (202) is matched with the nut (303), the compression ring (3) top is provided with a plurality of positioning grooves (302), and a plurality of positioning grooves (302) are evenly arranged in annular, a plurality of the positioning groove (302) bottom is slidably connected with a positioning column (203), a plurality of the positioning column (203) is fixedly connected to the top of the bottom cylinder (2).

4. The microbial limit filtration device of claim 1, wherein, The adjusting mechanism includes two sliding grooves (306), two the sliding groove (306) is symmetrically provided in the storage groove (305), two the sliding groove (306) is rotatably connected with a rotating shaft (309), two the rotating shaft (309) is fixedly connected to the both sides of the supporting plate (307), two the rotating shaft (309) surface is sleeved with a torsional spring (310), two the torsional spring (310) one end is fixedly connected to the one side of the sliding groove (306), two the torsional spring (310) the other end is fixedly connected to the one side of the supporting plate (307).

5. The microbial limit filtration device of claim 1, wherein, The support mechanism includes a fixed ring (4), the fixed ring (4) is fixedly connected to the top of the compression ring (3), the fixed ring (4) is slidably connected with two support rods (402) on the surface near the clamping plate (401), two the support rod (402) is fixedly connected to the one side of the clamping plate (401), two the support rod (402) the other end is fixedly connected with a bottom disc (403).

6. The microbial limit filtration device of claim 5, wherein, Two supporting rods (402) are sleeved with pull springs (404) near the side surface of the bottom disc (403), one end of the two pull springs (404) is fixedly connected to one side of the bottom disc (403), and the other end of the two pull springs (404) is fixedly connected to one side of the fixed ring (4).

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