Serum prefilter

Abstract

The utility model relates to the field of serum filters, in particular to a serum prefilter convenient to disassemble and clean, which comprises an upper funnel, a filter screen and a lower funnel, a blanking port is arranged at the upper end of the upper funnel, the upper funnel is of an inverted circular truncated cone structure, and the diameter of the upper end face of the upper funnel is larger than that of the lower end face of the upper funnel. The filter screen is located between the upper hopper and the lower hopper, a filter opening is formed in the bottom of the lower hopper, fixing plugs are arranged on the outer side face of the edge of the lower port of the upper hopper, a first annular body is arranged on the edge of the upper end of the lower hopper, plug holes with the same number as the fixing plugs are formed in the first annular body, and the fixing plugs are located in the plug holes. The serum prefilter disclosed by the utility model is convenient to disassemble, does not cause pollution to serum in the operation process, can be convenient to clean and sterilize at high temperature, and achieves the purpose of repeated utilization for multiple times.

Description

Technical Field

[0001] This utility model relates to the field of serum filters, specifically to a serum pre-filter that is easy to disassemble and clean. Background Technology

[0002] Currently, the common method for coarse filtration of serum involves placing a layer of gauze over a funnel, securing it with a rubber band, and then pouring the serum onto the gauze for filtration. This method has limitations: the gauze is not securely fixed and easily falls off; the gauze is easily contaminated by hand contact after use; and issues such as the suitability of the gauze material and size, as well as the generation of large amounts of gauze waste, are also common problems. Therefore, using existing technology for coarse filtration of serum presents problems of easy contamination and inconvenience. It is necessary to develop a serum filter that can solve these problems. Utility Model Content

[0003] To address the aforementioned problems, the main objective of this invention is to provide a serum pre-filter that is easy to disassemble, does not contaminate the serum during operation, is easy to clean and sterilize at high temperatures, and can be reused multiple times.

[0004] To achieve the above objectives, this utility model provides a serum pre-filter, comprising an upper hopper, a filter screen, and a lower hopper. The upper hopper has a discharge port at its upper end and is an inverted frustum structure with an upper end diameter larger than the lower end diameter. The filter screen is located between the upper and lower hoppers. The bottom of the lower hopper has a filter port. A fixing plug is provided on the outer side of the lower port edge of the upper hopper. A first annular body is provided at the upper edge of the lower hopper. The first annular body has the same number of plug holes as the fixing plugs, and the fixing plugs are located in the plug holes.

[0005] Furthermore, a second annular body is provided on the outer periphery of the filter screen. The second annular body also has the same number of plug holes as the fixed plugs. The fixed plugs pass through the plug holes on the second annular body and the plug holes on the first annular body from top to bottom.

[0006] Furthermore, the filter screen has an embedded structure. An annular support plate is provided at the bottom of the inner side of the first annular body of the lower hopper. The filter screen is embedded in the first annular body and above the annular support plate. The lower port of the upper hopper abuts against the edge of the upper surface of the filter screen.

[0007] Furthermore, a handle is provided at any position on the edge of the discharge port of the upper hopper, and a handle is also provided at any position on the outer edge of the filter screen.

[0008] Furthermore, the fixing plug is a bolt structure, which is fixed by a nut after passing through the plug hole.

[0009] Furthermore, the bottom surface of the second annular body is provided with several upper fastening parts, and the upper end surface of the first annular body is provided with several lower fastening parts, with the number of upper fastening parts and lower fastening parts being the same.

[0010] Furthermore, the upper fastener includes a first side baffle, a bottom plate, and a first stop block, while the lower fastener includes a second side baffle, a top plate, and a second stop block.

[0011] Furthermore, the upper fastener rotates and engages within the lower fastener, and in the engaged state, the fixing plug and its corresponding plug hole are located on the same axis.

[0012] The beneficial effects of this utility model through the above technical solution include:

[0013] (1) During use, the upper and lower funnels of the serum pre-filter of this utility model can stably fix the filter screen in the middle position. The overall structure is easy to clean and can be sterilized at high temperature. Different materials and pore sizes of filter screens can be selected according to actual needs, making it suitable for various scenarios.

[0014] (2) In addition, the filter of this utility model does not need to be disassembled during the cleaning or sterilization process, and the whole unit can be directly cleaned and sterilized.

[0015] (3) Furthermore, the filter of this utility model is equipped with a handle, so the operator does not need to directly touch the filter screen or funnel structure during operation. The operation can be carried out by the handle. Attached Figure Description

[0016] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0017] Figure 1 This is a schematic diagram of the structure of the first embodiment of the serum prefilter of this utility model.

[0018] Figure 2 This is a structural breakdown diagram of the serum pre-filter of this utility model.

[0019] Figure 3 This is a front view of the serum pre-filter of this utility model.

[0020] Figure 4 This is a schematic diagram of the second embodiment of the serum prefilter of this utility model.

[0021] Figure 5 This is a partial structural schematic diagram of the third embodiment of the serum prefilter of this utility model.

[0022] Explanation of reference numerals in the attached figures

[0023] 10. Upper hopper; 11. Discharge port; 12. Fixing plug; 121. Nut;

[0024] 20. Filter screen; 21. Second ring-shaped body;

[0025] 30. Lower hopper; 31. Filter port; 32. First annular body; 33. Annular support plate;

[0026] 40. Embolization hole;

[0027] 50. Handle;

[0028] 60. Upper fastener; 61. First side baffle; 62. Base plate; 63. First stop block;

[0029] 70. Lower fastener assembly; 71. Second side baffle; 72. Top plate; 73. Second stop block. Detailed Implementation

[0030] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Many specific details are set forth in the following description to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0031] First Embodiment

[0032] like Figures 1-3 The diagram shown is a schematic representation of the structure of a serum pre-filter according to the first embodiment of this invention. In this embodiment, the serum pre-filter includes an upper hopper 10, a filter screen 20, and a lower hopper 30. The upper hopper 10 has a discharge port 11 at its upper end. The upper hopper 10 is an inverted frustum structure with an upper end diameter larger than its lower end diameter. The filter screen 20 is located between the upper hopper 10 and the lower hopper 30. The lower hopper 30 has a filter port 31 at its bottom. A fixing plug 12 is provided on the outer side of the lower port edge of the upper hopper 10. The upper end of the lower hopper 30... A first annular body 32 is provided at the edge, and the first annular body 32 is provided with plug holes 40 in the same number as the fixed plugs 12. In this embodiment, there are two fixed plugs 12 and two plug holes 40. The two fixed plugs 12 and the two plug holes 40 are respectively located on both sides of the bottom of the upper hopper 10 or on both sides of the upper end of the lower hopper 30. The lower end of the fixed plug 12 passes through the plug hole 40. In addition, a handle 50 is provided at any position on the edge of the discharge port 11 of the upper hopper 10, and a handle 50 is also provided at any position on the outer edge of the filter screen 20.

[0033] In this embodiment, during the installation of the serum pre-filter, the filter screen 20 is placed between the upper hopper 10 and the lower hopper 30. The diameter of the filter screen 20 is equal to the diameter of the inscribed circle at the bottom of the upper hopper 10 or the upper port of the lower hopper 30, thus allowing the filter screen 20 to be directly snapped between the two. Then, the fixing plugs 12 on both sides of the bottom of the upper hopper 10 are inserted into the plug holes 40 directly below it. During installation, the operator can hold the handle 50 on the filter screen 20 to fix and install it. In the use of this embodiment, the operator holds the handle 50 on the upper hopper 10 and pours the raw serum into the discharge port 11. After being filtered by the filter screen 20, the serum enters the lower hopper 30 and is finally collected through the filter port 31, thus completing the entire filtration process. Throughout the filtration process, the upper hopper 10 and lower hopper 30 can stably fix the filter screen 20 in the middle position. The operator can operate it through the handle 50 without touching the structure of the filter screen 20, thus preventing the serum from being contaminated. Different materials and pore sizes of the filter screen 20 can be selected according to actual needs, making it suitable for various scenarios. For example, in this embodiment, the upper hopper 10 and lower hopper 30 can be made of stainless steel, which is easy to clean and can be sterilized at high temperatures. In addition, the filter in this embodiment does not need to be disassembled during cleaning or sterilization; the entire unit can be directly cleaned and sterilized.

[0034] In addition, in other preferred embodiments, such as Figure 2 As shown, the outer periphery of the filter screen 20 is provided with a second annular body 21. The second annular body 21 also has the same number of plug holes 40 as the fixing plugs 12. During filter installation, the fixing plugs 12 pass through the plug holes 40 on the second annular body 21 and the plug holes 40 on the first annular body 32 sequentially from top to bottom. This further positions the filter screen 20, preventing it from becoming misaligned due to the impact of serum during filtration, thus affecting the filtration effect. Furthermore, as... Figure 3 As shown, the fixing plug 12 in this embodiment can be a bolt structure. After the bolt structure passes through the plug hole 40, it is fixed by the nut 121, which can improve the stability of the overall filter.

[0035] Second Embodiment

[0036] Please see Figure 4The diagram shows a schematic of the filter structure according to the second embodiment of the present invention. This embodiment is basically the same as the previous embodiment in structure, except that the filter screen 20 in this embodiment is an embedded structure. Specifically, an annular support plate 33 is provided at the bottom of the inner side of the first annular body 32 on the lower hopper 30. The radius of the inner circle of the annular support plate 33 is smaller than the radius of the inner circle of the first annular body 32. The filter screen 20 is embedded in the first annular body 32 and above the annular support plate 33. The lower port of the upper hopper 10 abuts against the edge of the upper surface of the filter screen 20. Thus, the filter screen 20 can be fixedly mounted on the annular support plate 33 and the inner side of the first annular body 32, eliminating the need to set other structures on the filter screen 20 to improve stability. In addition, in other embodiments, the outer periphery of the filter screen 20 is still provided with a second annular body 21. The radius of the outer circle of the second annular body 21 is larger than the radius of the inner circle of the annular support plate 33 and smaller than the radius of the inner circle of the first annular body 32. Thus, the filter screen 20 can be firmly mounted on the upper port of the lower hopper 30.

[0037] Third Embodiment

[0038] Please refer to the following: Figure 5 The diagram shown is a partial structural schematic of the third embodiment of this utility model. Unlike the other embodiments described above, in this embodiment, to further improve the stability of the filter screen 20 structure and prevent misalignment and displacement, the bottom surface of the second annular body 21 is provided with several upper fastening members 60, and the upper end surface of the first annular body 32 is provided with several lower fastening members 70. The number of upper fastening members 60 and lower fastening members 70 is the same. The upper fastening members 60 are rotatably fastened within the lower fastening members 70. As shown, the upper fastening member 60 is provided with a first side baffle 61, a bottom plate 62, and a first stop block 63, while the lower fastening member 70 is provided with a second side baffle 71, a top plate 72, and a second stop block 73. Please refer to... Figure 2 As shown, after the upper and lower fastening parts of this embodiment are rotated and fastened, the fixing plug 12 and the corresponding lower plug hole 40 are located on the same axis. In other words, before the upper fastening part 60 is rotated, the plug hole 40 on the second annular body 21 of the filter screen 20 and the plug hole 40 on the first annular body 32 are not on the same upper and lower axis. Only after the upper fastening part 60 is rotated are they simultaneously located on the same upper and lower axis, which makes it convenient for the fixing plug 12 to pass through both for fixation.

[0039] Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

Claims

1. A serum prefilter, characterized in that, The device includes an upper hopper (10), a filter screen (20), and a lower hopper (30). The upper hopper (10) has a discharge port (11) at its upper end. The upper hopper (10) is an inverted frustum structure with an upper end diameter larger than the lower end diameter. The filter screen (20) is located between the upper hopper (10) and the lower hopper (30). The lower hopper (30) has a filter port (31) at its bottom. The outer side of the lower port edge of the upper hopper (10) is provided with a fixing plug (12). The upper edge of the lower hopper (30) is provided with a first annular body (32). The first annular body (32) has the same number of plug holes (40) as the fixing plugs (12). The fixing plugs (12) are located in the plug holes (40).

2. A serum pre-filter according to claim 1, characterized in that, The filter screen (20) has a second annular body (21) on its outer periphery. The second annular body (21) also has the same number of plug holes (40) as the fixed plugs (12). The fixed plugs (12) pass through the plug holes (40) on the second annular body (21) and the plug holes (40) on the first annular body (32) from top to bottom.

3. A serum pre-filter according to claim 1, characterized in that, The filter screen (20) is an embedded structure. The bottom of the inner side of the first annular body (32) on the lower hopper (30) is provided with an annular support plate (33). The filter screen (20) is fitted inside the first annular body (32) and above the annular support plate (33). The lower port of the upper hopper (10) abuts against the edge of the upper surface of the filter screen (20).

4. A serum prefilter according to any one of claims 1 to 3, characterized in that, A handle (50) is provided at any position on the edge of the discharge port (11) of the upper hopper (10), and a handle (50) is also provided at any position on the outer edge of the filter screen (20).

5. A serum pre-filter according to claim 1, characterized in that, The fixing plug (12) is a bolt structure, which is fixed by a nut (121) after passing through the plug hole (40).

6. A serum prefilter according to claim 2, characterized in that, The bottom surface of the second annular body (21) is provided with a plurality of upper fastening parts (60), and the upper end surface of the first annular body (32) is provided with a plurality of lower fastening parts (70). The number of upper fastening parts (60) and lower fastening parts (70) is the same.

7. A serum pre-filter according to claim 6, characterized in that, The upper fastener (60) includes a first side baffle (61), a bottom plate (62) and a first stop block (63), and the lower fastener (70) includes a second side baffle (71), a top plate (72) and a second stop block (73).

8. A serum prefilter according to claim 6, characterized in that, The upper fastener (60) is rotated and fastened inside the lower fastener (70), and in the fastened state, the fixing plug (12) and its corresponding plug hole (40) are located on the same axis.

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