Filtering device for medicine inspection

Abstract

The utility model relates to a filtering device for medicine inspection, which comprises a shell and a filter cartridge arranged inside the shell, the filter cartridge comprises an inner cartridge body with an opening at the upper end and an outer cartridge body rotatably sleeved outside the inner cartridge body, the inner wall of the outer cartridge body is in sealing fit with the outer wall of the inner cartridge body, a first drain hole is arranged at the bottom of the side wall of the inner cartridge body, and a second drain hole is arranged at the bottom of the side wall of the outer cartridge body. A second drainage hole is formed in the outer cylinder body, and the motion trail plane of the first drainage hole and the motion trail plane of the second drainage hole are coplanar; the device further comprises a driving assembly, and the driving assembly is installed on the shell and used for driving the outer barrel body and the inner barrel body to rotate relative to each other. A locking assembly is arranged between the inner barrel body and the outer barrel body and used for fixing the relative position of the inner barrel body and the outer barrel body. The problems that in the prior art, a filter cartridge cannot adjust the aperture of a filter hole according to the size of the residual part of a solid drug, and then the filtering efficiency of an extracting solution is affected are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of drug inspection, in particular to a filtering device for drug inspection. Background Art

[0002] As an important technical support for drug supervision, drug inspection and testing plays a very important role in judging drug quality and preventing drug quality risks. Strengthening the construction of drug inspection and testing system and comprehensively improving drug inspection and testing capabilities are of great significance to ensuring drug safety.

[0003] In the process of drug testing, solid drugs are usually immersed in an extract so that the components to be tested in the solid drugs are dissolved in the extract. Then, a filtering device is used to remove the residual solid drugs that are not dissolved in the extract. Finally, the filtered extract is tested. However, existing filtering devices usually use filter cartridges with fixed filter pore diameters, which makes it impossible to adjust the filter pore diameter according to the size of the residual solid drug, thereby affecting the filtration efficiency of the extract. Utility Model Content

[0004] In view of this, the purpose of the utility model is to provide a filtering device for drug testing to solve the problem that the filter cartridge in the prior art cannot adjust the pore size of the filter holes according to the size of the solid drug residue, thereby affecting the filtering efficiency of the extract.

[0005] The utility model is realized by the following technical solutions:

[0006] A filter device for drug inspection, comprising a housing and a filter cartridge arranged inside the housing, the filter cartridge comprising an inner cylinder with an opening at the upper end and an outer cylinder rotatably sleeved outside the inner cylinder, and the inner wall of the outer cylinder is sealed with the outer wall of the inner cylinder, a first hydrophobic hole is opened at the bottom of the side wall of the inner cylinder, a second hydrophobic hole is arranged on the outer cylinder, and a motion trajectory plane of the first hydrophobic hole is coplanar with a motion trajectory plane of the second hydrophobic hole;

[0007] It also includes a driving assembly, which is mounted on the housing and is used to drive the outer cylinder and the inner cylinder to rotate relative to each other;

[0008] A locking assembly is provided between the inner cylinder and the outer cylinder, and the locking assembly is used to fix the relative position of the inner cylinder and the outer cylinder.

[0009] Furthermore, the first hydrophobic hole and the second hydrophobic hole have the same aperture, and both are strip-shaped holes extending along the circumferential direction.

[0010] Furthermore, there are a plurality of the second hydrophobic holes, the apertures of the plurality of the second hydrophobic holes are all different, and the aperture of the largest second hydrophobic hole is not larger than the aperture of the first hydrophobic hole.

[0011] Furthermore, the shell is a cylindrical structure with an opening at the upper end, a notch is provided on the open end of the shell, and a first protrusion adapted to the notch is provided on the open end of the inner cylinder.

[0012] Further, the driving assembly includes a rotating shaft whose lower end is rotatably connected to the bottom wall of the shell and a worm gear fixedly connected to the middle of the rotating shaft, and the upper end of the rotating shaft is connected to the outer cylinder;

[0013] A worm meshing with the worm wheel is rotatably connected to the side wall of the shell, and one end of the worm penetrates the side wall of the shell and extends out of the shell.

[0014] Furthermore, a second protrusion is fixedly connected to the upper end of the rotating shaft, and a groove adapted to the second protrusion is provided on the lower surface of the outer cylinder.

[0015] Furthermore, a partition is provided on the housing between the second protrusion and the worm gear, a through hole is opened at the center of the partition, and the rotating shaft is rotatably fitted in the through hole.

[0016] Furthermore, an arc-shaped hole is provided on the opening end of the inner cylinder, and the locking assembly includes a locking bolt, and the threaded end of the locking bolt passes through the arc-shaped hole and is threadedly connected with the outer cylinder.

[0017] The beneficial effects of the utility model are:

[0018] The drug inspection filtering device has a second hydrophobic hole at the same height as the first hydrophobic hole on the side wall of the outer cylinder, and the first hydrophobic hole is combined with the second hydrophobic hole to connect the inside and the outside of the filter cartridge, thereby achieving the purpose of filtering; the outer cylinder and the inner cylinder are driven to rotate relative to each other by a driving component to change the relative position of the first hydrophobic hole and the second hydrophobic hole, so that they are combined to form filter holes with different apertures, thereby achieving the purpose of adjusting the aperture of the filter hole according to the size of the residual part of the solid drug; finally, the relative position of the inner cylinder and the outer cylinder is fixed by a locking component, so that the filter cartridge can stably complete the filtering work, thereby improving the filtering efficiency to a certain extent.

[0019] Other advantages, objectives and features of the present invention will be described in the following description to some extent, and will be apparent to those skilled in the art based on the following examination and research, or can be taught from the practice of the present invention to some extent. The objectives and other advantages of the present invention can be achieved and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the three-dimensional structure of the first embodiment of the utility model;

[0021] Figure 2It is a top view of the first embodiment of the utility model;

[0022] Figure 3 This is an exploded view of the first embodiment of the utility model;

[0023] Figure 4 for Figure 2 Sectional view of AA in the middle;

[0024] Figure 5 This is a schematic diagram of the three-dimensional structure of the filter cartridge in the first embodiment of the utility model;

[0025] Figure 6 It is a schematic diagram of the three-dimensional structure of the filter cartridge in the second embodiment of the present utility model.

[0026] In the figure: housing 1, partition 11, through hole 111, notch 12,

[0027] Inner cylinder 21, first protrusion 211, arc hole 212, first drain hole 213, outer cylinder 22, groove 221, second drain hole 222, locking bolt 23,

[0028] The rotating shaft 31 , the worm wheel 311 , the second protrusion 312 , and the worm 32 . DETAILED DESCRIPTION

[0029] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0030] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0032] In the above description of the utility model, it should be noted that the terms "one side", "the other side", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0033] In addition, the term "same" does not mean that the parts must be absolutely the same, but slight differences are allowed. The term "vertical" only means that the positional relationship between the parts is more vertical than "parallel", and does not mean that the structure must be completely vertical, but can be slightly tilted.

[0034] Embodiment 1

[0035] See also Figure 1-5 The utility model provides a technical solution: a filter device for drug inspection, comprising a housing 1 and a filter cartridge arranged inside the housing 1, the filter cartridge comprising an inner cylinder 21 with an opening at the upper end and an outer cylinder 22 rotatably sleeved outside the inner cylinder 21, and the inner wall of the outer cylinder 22 is sealed with the outer wall of the inner cylinder 21, a first hydrophobic hole 213 is opened at the bottom of the side wall of the inner cylinder 21, a second hydrophobic hole 222 is arranged on the outer cylinder 22, and the motion trajectory plane of the first hydrophobic hole 213 is coplanar with the motion trajectory plane of the second hydrophobic hole 222;

[0036] It also includes a driving assembly, which is mounted on the housing 1 and is used to drive the outer cylinder 22 and the inner cylinder 21 to rotate relative to each other;

[0037] A locking assembly is provided between the inner cylinder 21 and the outer cylinder 22 , and the locking assembly is used to fix the relative position of the inner cylinder 21 and the outer cylinder 22 .

[0038] A second hydrophobic hole 222 is provided on the side wall of the outer cylinder 22 at the same level as the first hydrophobic hole 213, and the inner wall of the outer cylinder 22 is sealed with the outer wall of the inner cylinder 21, so that the filter hole formed by the combination of the first hydrophobic hole 213 and the second hydrophobic hole 222 serves as the only channel connecting the inside and the outside of the filter cartridge, thereby achieving the purpose of filtration; the outer cylinder 22 and the inner cylinder 21 are driven to rotate relative to each other by the driving component to change the relative position of the first hydrophobic hole 213 and the second hydrophobic hole 222, so that they are combined to form filter holes with different apertures, so as to achieve the purpose of adjusting the aperture of the filter hole according to the size of the residual part of the solid medicine; finally, the relative position of the inner cylinder 21 and the outer cylinder 22 is fixed by the locking component, so that the filter cartridge can stably complete the filtration work, thereby improving the filtration efficiency to a certain extent.

[0039] When in use, the driving assembly drives the outer cylinder 22 to rotate in the opposite direction relative to the inner cylinder 21, so that the inner wall of the outer cylinder 22 blocks the first hydrophobic hole 213, and the solid medicine and the extract are placed in the inner cylinder 21 together. After the tested component in the solid medicine is dissolved in the extract, the driving assembly drives the outer cylinder 22 to rotate forward relative to the inner cylinder 21 to move the second hydrophobic hole 222 toward the first hydrophobic hole 213, so as to gradually increase the aperture of the filter hole formed by the combination of the first hydrophobic hole 213 and the second hydrophobic hole 222, until the aperture of the filter hole is close to the size of the residual part of the solid medicine, and then the relative position of the inner cylinder 21 and the outer cylinder 22 is fixed by the locking assembly, so that the mixed solution of the extract and the tested component of the solid medicine flows out of the filter hole into the shell 1, while the residual part of the solid medicine is blocked in the inner cylinder 21, and finally the filtered extract is tested.

[0040] In this embodiment, the first hydrophobic holes 213 and the second hydrophobic holes 222 have the same aperture, and are both strip-shaped holes extending along the circumferential direction.

[0041] By arranging the first hydrophobic holes 213 and the second hydrophobic holes 222 as strip holes, the pore size of the filter holes formed by the first hydrophobic holes 213 and the second hydrophobic holes 222 has a larger adjustable range and has higher practicality.

[0042] In this embodiment, the shell 1 is a cylindrical structure with an opening at the upper end. A notch 12 is provided on the open end of the shell 1 , and a first protrusion 211 adapted to the notch 12 is provided on the open end of the inner cylinder 21 .

[0043] The first protrusion 211 is embedded in the notch 12 to limit the rotation of the inner cylinder 21 on the housing 1 .

[0044] In this embodiment, the driving assembly includes a rotating shaft 31 whose lower end is rotatably connected to the bottom wall of the housing 1 and a worm gear 311 fixedly connected to the middle of the rotating shaft 31, and the upper end of the rotating shaft 31 is connected to the outer cylinder 22;

[0045] A worm 32 meshing with the worm wheel 311 is rotatably connected to the side wall of the housing 1 , and one end of the worm 32 penetrates the side wall of the housing 1 and extends out of the housing 1 .

[0046] One end of the worm 32 is passed through the side wall of the housing 1 and extended outside the housing 1 to facilitate manual control of the rotation of the worm 32; through the transmission of the worm wheel 311 and the worm 32, continuous control of the rotating shaft 31 is achieved, thereby driving the outer cylinder 22 to rotate to any angle.

[0047] In this embodiment, a second protrusion 312 is fixedly connected to the upper end of the rotating shaft 31 , and a groove 221 adapted to the second protrusion 312 is provided on the lower surface of the outer cylinder 22 .

[0048] The second protrusion 312 is in the shape of a hexagonal prism. By cooperating with the groove 221, the rotating shaft 31 drives the outer cylinder 22 to rotate on the inner cylinder 21. The groove 221 of the outer cylinder 22 is aligned with the second protrusion 312 and then lowered, so that the second protrusion 312 is embedded in the groove 221, thereby realizing the quick installation of the outer cylinder 22.

[0049] In this embodiment, a partition plate 11 is disposed on the housing 1 between the second protrusion 312 and the worm gear 311 . A through hole 111 is formed at the center of the partition plate 11 . The rotating shaft 31 is rotatably fitted in the through hole 111 .

[0050] A sealing ring is provided at the connection between the rotating shaft 31 and the partition plate 11 to separate the interior of the housing 1 into an upper chamber and a lower chamber, and the filtered extract is collected through the upper chamber of the housing 1 .

[0051] In this embodiment, an arc-shaped hole 212 is provided on the open end of the inner cylinder 21 , and the locking assembly includes a locking bolt 23 , and a threaded end of the locking bolt 23 passes through the arc-shaped hole 212 and is threadedly connected to the outer cylinder 22 .

[0052] By rotating the locking bolt 23 forward, the outer cylinder 22 moves upward and approaches the inner cylinder 21 under the push of the external thread on the locking bolt 23, until the bottom surface inside the outer cylinder 22 abuts against the bottom surface outside the inner cylinder 21, and under the action of the mutual friction force, the mutual rotation between the outer cylinder 22 and the inner cylinder 21 is limited.

[0053] Embodiment 2

[0054] See also Figure 6 , which is different from the first embodiment in that: in this embodiment, there are multiple second hydrophobic holes 222 , the apertures of the multiple second hydrophobic holes 222 are different, and the aperture of the largest second hydrophobic hole 222 is not larger than the aperture of the first hydrophobic hole 213 .

[0055] The apertures of the plurality of second hydrophobic holes 222 are set to a plurality of commonly used apertures, and all the second hydrophobic holes 222 are arranged in a circular array on the side wall of the outer cylinder 22 from small to larger apertures, and the size of the residual solid drug portion is measured in advance, so as to find the second hydrophobic hole 222 with an aperture close to and smaller than the size according to the size, and then quickly align the second hydrophobic hole 222 with the first hydrophobic hole 213, thereby improving the filtration efficiency of the filter cartridge.

[0056] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A filtering device for drug testing, comprising a housing (1) and a filter cartridge arranged inside the housing (1), characterized in that: The filter cartridge comprises an inner cylinder (21) with an opening at the upper end and an outer cylinder (22) rotatably sleeved outside the inner cylinder (21), and the inner wall of the outer cylinder (22) is sealed with the outer wall of the inner cylinder (21), a first hydrophobic hole (213) is provided at the bottom of the side wall of the inner cylinder (21), and a second hydrophobic hole (222) is provided on the outer cylinder (22), and the motion trajectory plane of the first hydrophobic hole (213) is coplanar with the motion trajectory plane of the second hydrophobic hole (222); It also includes a driving assembly, which is mounted on the housing (1) and is used to drive the outer cylinder (22) and the inner cylinder (21) to rotate relative to each other; A locking assembly is provided between the inner cylinder (21) and the outer cylinder (22), and the locking assembly is used to fix the relative position of the inner cylinder (21) and the outer cylinder (22).

2. The drug testing filter device according to claim 1, characterized in that: The first hydrophobic hole (213) and the second hydrophobic hole (222) have the same aperture, and are both strip-shaped holes extending in the circumferential direction.

3. The drug testing filter device according to claim 1, characterized in that: There are a plurality of second hydrophobic holes (222), the apertures of the plurality of second hydrophobic holes (222) are all different, and the aperture of the largest second hydrophobic hole (222) is not larger than the aperture of the first hydrophobic hole (213).

4. The drug testing filter device according to claim 2 or 3, characterized in that: The shell (1) is a cylindrical structure with an opening at the upper end. The open end of the shell (1) is provided with a notch (12). The open end of the inner cylinder (21) is provided with a first protrusion (211) adapted to the notch (12).

5. The drug testing filter device according to claim 4, characterized in that: The driving assembly comprises a rotating shaft (31) whose lower end is rotatably connected to the bottom wall of the housing (1) and a worm gear (311) fixedly connected to the middle of the rotating shaft (31); the upper end of the rotating shaft (31) is connected to the outer cylinder (22); A worm (32) meshing with the worm wheel (311) is rotatably connected to the side wall of the housing (1), and one end of the worm (32) penetrates the side wall of the housing (1) and extends outside the housing (1).

6. The drug testing filter device according to claim 5, characterized in that: The upper end of the rotating shaft (31) is fixedly connected with a second protrusion (312), and the lower surface of the outer cylinder (22) is provided with a groove (221) adapted to the second protrusion (312).

7. The drug testing filter device according to claim 6, characterized in that: A partition plate (11) is provided on the housing (1) between the second protrusion (312) and the worm gear (311), a through hole (111) is opened at the center of the partition plate (11), and the rotating shaft (31) is rotatably fitted in the through hole (111).

8. The drug testing filter device according to claim 7, characterized in that: An arc-shaped hole (212) is provided on the open end of the inner cylinder (21), and the locking assembly comprises a locking bolt (23). The threaded end of the locking bolt (23) passes through the arc-shaped hole (212) and is threadedly connected to the outer cylinder (22).

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