Filter for medicine inspection

Abstract

The utility model relates to the technical field of medicine inspection, and discloses a filter for medicine inspection. Comprising a supporting base, a liquid discharging pipe is fixedly connected to the inner side wall of the supporting base, a plurality of filter heads are evenly and fixedly connected to the top of the liquid discharging pipe, the filter heads communicate with the interior of the liquid discharging pipe, corrugated pipes are fixedly connected to the tops of the filter heads, and filter membrane fixing bases are fixedly connected to the tops of the corrugated pipes; glass cylinders are inserted into the tops of the multiple filter membrane fixing bases, auxiliary mounting mechanisms are arranged on the side walls of the top ends of the multiple filter membrane fixing bases, and the auxiliary mounting mechanisms comprise fixing clamping blocks which are uniformly and fixedly connected to the side walls of the top ends of the filter membrane fixing bases in the annular direction. In the process that the glass cylinder is accurately inserted into the filter membrane fixing base, the auxiliary positioning effect is achieved, large errors caused by butt joint of the glass cylinder and the filter membrane fixing base are avoided, the sealing performance can be improved, and medicine filtering work can be conducted smoothly.

Description

Technical Field

[0001] This utility model relates to the field of pharmaceutical testing technology, and more specifically, to a filter for pharmaceutical testing. Background Technology

[0002] Filters used in pharmaceutical testing are indispensable equipment in the pharmaceutical industry and drug quality control. They are used for the filtration, sterilization and clarification of samples. They are mainly composed of multiple precision components, and different types of filter components are different. Common ones include needle filters and vacuum filters. Vacuum filters consist of a glass cylinder, a filter membrane fixing base, a receiving bottle and a vacuum connection valve.

[0003] When using a vacuum filtration device, the glass tube needs to be aligned with the filter membrane fixing base. This alignment is done manually, by manually inserting the bottom of the glass tube into the filter membrane fixing base. During this process, the glass tube may not be accurately inserted on the first attempt due to the operator's skill level and other factors. Furthermore, errors in alignment are not conducive to sealing and can lead to leakage in pharmaceutical testing filtration in severe cases. Utility Model Content

[0004] The purpose of this invention is to provide a filter for pharmaceutical testing to solve the problems mentioned in the background art.

[0005] 1. When operators unfamiliar with the operation manually insert the bottom of the glass tube into the filter membrane fixing base, they may fail to insert it successfully on the first attempt. Repeated insertions may cause additional wear on the outer wall of the bottom of the glass tube, which will eventually reduce the service life of the glass tube and cause it to be scrapped prematurely.

[0006] 2. After the glass tube is inserted into the filter membrane fixing base, misalignment can easily lead to reduced sealing, making it easy for drug testing filters to leak, resulting in drug waste and environmental pollution at the drug testing site.

[0007] To achieve the above objectives, this utility model provides a filter for pharmaceutical testing, including a support base. A drain pipe is fixedly connected to the inner side wall of the support base. A plurality of filter heads are uniformly fixedly connected to the top of the drain pipe. Each filter head communicates with the interior of the drain pipe. A corrugated pipe is fixedly connected to the top of each filter head. A filter membrane fixing base is fixedly connected to the top of each corrugated pipe. A glass tube is inserted into the top of each filter membrane fixing base. An auxiliary installation mechanism is provided on the top side wall of each filter membrane fixing base. The auxiliary installation mechanism includes fixing blocks uniformly fixedly connected to the top side wall of the filter membrane fixing base in a circumferential orientation. A sliding rod slides through the interior of each fixing block. An extension rod is fixedly connected to the end of the sliding rod near the glass tube. A positioning plate is hinged to the end of the extension rod away from the sliding rod. A limit plate is fixedly connected to the end of the sliding rod away from the extension rod. An elastic element is fixedly connected to the bottom of the limit plate. The end of the elastic element away from the limit plate is fixedly connected to the side wall of the fixing block.

[0008] As a further improvement to this technical solution, the outer wall contour of the positioning plate on the side away from the extension rod is arc-shaped, and the arc-shaped surfaces of the multiple positioning plates abut against the outer wall of the bottom end of the glass tube.

[0009] By using elastic elements in conjunction with sliding rods and extension rods to reset the positioning plates, the glass tube can be clamped and fixed. Furthermore, by setting multiple positioning plates, it plays an auxiliary positioning role in the process of accurately inserting the glass tube into the filter membrane fixing base.

[0010] As a further improvement to this technical solution, the slide bar is symmetrically hinged with two first connecting rods at the end near the extension rod, and the ends of the two first connecting rods away from the slide bar are each hinged with a second connecting rod. The ends of the two second connecting rods away from the first connecting rods are each hinged to the bottom side wall of the positioning plate.

[0011] As a further improvement to this technical solution, both first links and second links are located below the extension rod, and torsion springs are provided inside the hinge joints of both first links and second links.

[0012] As a further improvement to this technical solution, a protective sleeve is fixedly connected to the top of the multiple fixed blocks and to the outside of the filter membrane fixing base.

[0013] As a further improvement to this technical solution, a sealing ring is fixedly connected to the inner wall of the filter membrane fixing base, and the sealing ring is located between the outer wall of the bottom end of the glass tube and the inner wall of the filter membrane fixing base.

[0014] By utilizing the deformation effect of the sealing ring, the gap between the outer wall of the bottom of the glass tube and the inner wall of the filter membrane fixing base is sealed, thereby improving the sealing performance and preventing leakage of the filtered medicine.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] In this pharmaceutical testing filter, an auxiliary installation mechanism is set up. The elastic rebound characteristics of the elastic element allow the sliding rod and extension rod, which were squeezed before the glass tube was inserted, to return to their original position along with the positioning plate. This achieves the purpose of clamping and fixing the glass tube. Furthermore, by setting up multiple positioning plates, an auxiliary positioning function is played during the precise insertion of the glass tube into the filter membrane fixing base. This avoids large errors in the docking of the glass tube and the filter membrane fixing base, which helps to improve the sealing performance and ensures the smooth operation of pharmaceutical filtration. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a three-dimensional structural diagram of the relevant components at the filter membrane fixing base of the utility model;

[0019] Figure 3 This is a side view of the three-dimensional structure of the filter membrane fixing base of the utility model;

[0020] Figure 4 This is a three-dimensional structural diagram of the components related to the auxiliary installation mechanism of the utility model.

[0021] The meanings of the labels in the diagram are as follows:

[0022] 1. Support base; 2. Drain pipe; 21. Filter head; 22. Corrugated pipe; 3. Filter membrane fixing base; 31. Glass cylinder; 4. Auxiliary installation mechanism; 41. Fixing block; 42. Sliding rod; 43. Extension rod; 44. Positioning plate; 45. Limiting plate; 46. Elastic element; 51. First connecting rod; 52. Second connecting rod; 6. Protective sleeve; 71. Sealing ring. Detailed Implementation

[0023] 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.

[0024] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0025] Example 1

[0026] Please see Figures 1-4 As shown, this embodiment provides a filter for pharmaceutical testing, including a support base 1. A drain pipe 2 is fixedly connected to the inner wall of the support base 1. A plurality of filter heads 21 are uniformly fixedly connected to the top of the drain pipe 2. The filter heads 21 are all in communication with the inside of the drain pipe 2. A corrugated pipe 22 is fixedly connected to the top of each filter head 21. A filter membrane fixing base 3 is fixedly connected to the top of each corrugated pipe 22. A glass tube 31 is inserted into the top of each filter membrane fixing base 3. An auxiliary installation mechanism 4 is provided on the top side wall of each filter membrane fixing base 3. The installation mechanism 4 includes fixing blocks 41 that are uniformly fixed to the top side wall of the filter membrane fixing base 3 in a ring orientation. Each fixing block 41 has a sliding rod 42 that slides through it. An extension rod 43 is fixedly connected to the end of the slide rod 42 near the glass tube 31. A positioning plate 44 is hinged to the end of the extension rod 43 away from the slide rod 42. A limit plate 45 is fixedly connected to the end of the slide rod 42 away from the extension rod 43. An elastic element 46 is fixedly connected to the bottom of the limit plate 45. The end of the elastic element 46 away from the limit plate 45 is fixedly connected to the side wall of the fixing block 41.

[0027] Before filtering the drug, the bottom end of the glass tube 31 needs to be aligned and inserted into the filter membrane fixing base 3. When the bottom end of the glass tube 31 is directly above the filter membrane fixing base 3, the outer wall of the glass tube 31 will press against the positioning plate 44 after contact, causing the positioning plate 44 to slide towards the limiting plate 45 in conjunction with the extension rod 43 and the sliding rod 42. During this process, the elastic element 46 is stretched synchronously. Here, the elastic element 46 can be a rubber band or elastic rope with a large elasticity. After the glass tube 31 is inserted into the filter membrane fixing base 3, the sliding rod 42 and the extension rod 43 will return to their original positions with the positioning plate 44 under the rebound action of the elastic element 46, thus achieving the purpose of clamping and fixing the glass tube 31. In addition, by setting multiple positioning plates 44, the glass tube 31 is accurately inserted into the filter membrane fixing base 3, which plays an auxiliary positioning role, avoids large errors in the docking of the glass tube 31 and the filter membrane fixing base 3, and helps to improve the sealing performance, so that the drug filtration work can proceed smoothly.

[0028] The outer wall of the positioning plate 44, away from the extension rod 43, has an arc-shaped profile. Multiple positioning plates 44 with arc-shaped surfaces abut against the bottom outer wall of the glass cylinder 31. The arc-shaped surfaces allow for better contact with the outer wall of the glass cylinder 31 and protect its surface. Two first connecting rods 51 are symmetrically hinged to the end of the slide rod 42 near the extension rod 43. A second connecting rod 52 is hinged to the end of each first connecting rod 51 away from the slide rod 42. The ends of each second connecting rod 52 away from the first connecting rod 51 are hinged to the bottom side wall of the positioning plate 44. Both the first connecting rods 51 and the second connecting rods 52 are located below the extension rod 43. 2. A torsion spring is installed inside the hinge. In the initial state, when the glass tube 31 is not inserted into the filter membrane fixing base 3, the torsion spring inside the hinge between the first connecting rod 51 and the second connecting rod 52 is not compressed, so the first connecting rod 51 and the second connecting rod 52 are in a state similar to being straight. When the positioning plate 44 is hinged to the extension rod 43, and the first connecting rod 51 and the second connecting rod 52 are located below the extension rod 43, the total length of the first connecting rod 51 and the second connecting rod 52 in the state similar to being straight exceeds the total length of the extension rod 43. This achieves the effect of pushing the bottom end of the positioning plate 44 away from the extension rod 43, so that the positioning plate 44 is always in an inclined state.

[0029] The glass tube 31 is inserted into the filter membrane fixing base 3, causing the positioning plate 44 to be squeezed by the outer wall of the bottom end of the glass tube 31. As the glass tube 31 is fully inserted, the positioning plate 44 is rotated under the pressure, in conjunction with the extension rod 43, and gradually changes from an inclined state to a vertical state. During this process, the second connecting rod 52 and the first connecting rod 51, which are in a similar straight state, gradually change to a bent state and simultaneously compress the torsion spring. Then, in conjunction with the spring rebound characteristics, the first connecting rod 51 and the second connecting rod 52 support the positioning plate 44 and achieve the clamping and fixing of the glass tube 31.

[0030] Multiple fixing blocks 41 are fixedly connected to protective sleeves 6 on their tops and outside the filter membrane fixing base 3. The protective sleeves 6 protect the filter membrane fixing base 3 and reduce damage to the filter membrane fixing base 3 from accidental impacts by external objects. At the same time, they provide better dust protection for the auxiliary installation mechanism 4. A sealing ring 71 is fixedly connected to the inner wall of the filter membrane fixing base 3. The sealing ring 71 is located between the outer wall of the bottom end of the glass tube 31 and the inner wall of the filter membrane fixing base 3. When the glass tube 31 is aligned and inserted into the filter membrane fixing base 3, the outer wall of the bottom end of the glass tube 31 comes into contact with the sealing ring 71. By squeezing the sealing ring 71, the elastic sealing ring 71 deforms between the outer wall of the bottom end of the glass tube 31 and the inner wall of the filter membrane fixing base 3, thereby sealing the gap between the outer wall of the bottom end of the glass tube 31 and the inner wall of the filter membrane fixing base 3. This helps to improve the sealing performance of the glass tube 31 when it is placed inside the filter membrane fixing base 3 and prevents the medicine from leaking during filtration.

[0031] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A filter for pharmaceutical testing, comprising a support base (1), wherein a drain pipe (2) is fixedly connected to the inner wall of the support base (1), characterized in that: A plurality of filter heads (21) are uniformly fixedly connected to the top of the drain pipe (2). Each filter head (21) is connected to the interior of the drain pipe (2). A corrugated pipe (22) is fixedly connected to the top of each filter head (21). A filter membrane fixing base (3) is fixedly connected to the top of each corrugated pipe (22). A glass tube (31) is inserted into the top of each filter membrane fixing base (3). An auxiliary installation mechanism (4) is provided on the top side wall of each filter membrane fixing base (3). The auxiliary installation mechanism (4) includes components uniformly fixedly connected to the filter membrane fixing base (3) in a ring orientation. The top sidewall has a fixing block (41), and a sliding rod (42) slides through the interior of each fixing block (41). An extension rod (43) is fixedly connected to the end of the sliding rod (42) near the glass tube (31). A positioning plate (44) is hinged to the end of the extension rod (43) away from the sliding rod (42). A limit plate (45) is fixedly connected to the end of the sliding rod (42) away from the extension rod (43). An elastic element (46) is fixedly connected to the bottom of the limit plate (45). The end of the elastic element (46) away from the limit plate (45) is fixedly connected to the sidewall of the fixing block (41).

2. The filter for pharmaceutical testing according to claim 1, characterized in that: The outer wall of the positioning plate (44) away from the extension rod (43) has an arc shape, and the arc surface of the multiple positioning plates (44) abuts against the outer wall of the bottom end of the glass tube (31).

3. The filter for pharmaceutical testing according to claim 1, characterized in that: The slide bar (42) is symmetrically hinged with two first connecting rods (51) at one end near the extension rod (43). The ends of the two first connecting rods (51) away from the slide bar (42) are each hinged with a second connecting rod (52). The ends of the two second connecting rods (52) away from the first connecting rods (51) are each hinged to the bottom side wall of the positioning plate (44).

4. The filter for pharmaceutical testing according to claim 3, characterized in that: Both first links (51) and second links (52) are located below the extension rod (43), and torsion springs are provided inside the hinge joints of both first links (51) and second links (52).

5. The filter for pharmaceutical testing according to claim 1, characterized in that: A protective sleeve (6) is fixedly connected to the top of the multiple fixed blocks (41) and to the outside of the filter membrane fixing base (3).

6. The filter for pharmaceutical testing according to claim 1, characterized in that: A sealing ring (71) is fixedly connected to the inner wall of the filter membrane fixing base (3). The sealing ring (71) is located between the outer wall of the bottom end of the glass tube (31) and the inner wall of the filter membrane fixing base (3).

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