Anti-pollution filter element suction head

Abstract

The utility model relates to the field of filter element suction head devices, and discloses an anti-pollution filter element suction head which comprises a main body and a filter element, the filter element is arranged in the main body, the main body comprises a suction head, the bottom end of the inner side wall of the suction head is connected with a first sealing plug in a sliding mode, and a plurality of limiting rings are arranged on the side wall of a second sealing plug in a linear array mode. The top end of the second sealing plug is fixedly connected with a fixing block, the filter element comprises two first filter screens, a plurality of filter particles are arranged between the two first filter screens, the bottom end of the first filter screen close to the middle of the suction head is fixedly connected with a second filter screen, and the two first filter screens are fixedly connected with the inner side wall of the suction head. According to the anti-pollution filter element suction head, the two sealing plugs are arranged in the main body, the two ends of the suction head are sealed, the suction head can be effectively prevented from being polluted before use, the filter element is arranged in the suction head, and the filtering effect on a liquid sample is effectively improved.

Description

Technical Field

[0001] The utility model relates to the field of filter element suction head devices, in particular to an anti-pollution filter element suction head. Background Art

[0002] The pipette tip is a consumable used with the pipette. The tip itself is mainly made of medical-grade polypropylene. When in use, the pipette tip cooperates with the pipette to aspirate or discharge liquid samples and complete the pipetting process of liquid samples. It is widely used in medical research, biological research, chemical laboratories and other fields.

[0003] Although the prior art uses a pipette tip to absorb liquid samples during the use of the pipette, there is a problem of lack of protection for the pipette tip before use, which results in the inside of the pipette tip being easily contaminated with impurities such as dust and bacteria before use, making the experimental results prone to deviations. Therefore, those skilled in the art provide a contamination-proof filter tip to solve the problems raised in the above background technology. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings of the prior art and to propose an anti-pollution filter element pipette tip. The utility model provides an anti-pollution filter element pipette tip which provides two sealing plugs in the main body to seal the two ends of the pipette tip, thereby effectively preventing the pipette tip from being contaminated before use, and arranging a filter element inside the pipette tip to effectively improve the filtering effect of the liquid sample.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an anti-pollution filter element suction head, comprising a main body and a filter element, the filter element is arranged inside the main body, the main body comprises a suction head, a first sealing plug is slidably connected to the bottom end of the inner side wall of the suction head, a second sealing plug is slidably connected to the top end of the inner side wall of the suction head, the side wall of the second sealing plug has a plurality of limit rings in a linear array, a fixed block is fixedly connected to the top end of the second sealing plug, the filter element comprises two first filter screens, a plurality of filter particles are arranged between the two first filter screens, a second filter screen is fixedly connected to the bottom end of the first filter screen near the middle of the suction head, and the two first filter screens are fixedly connected to the inner side wall of the suction head;

[0006] Through the above technical solution, by setting the main body, a first sealing plug and a second sealing plug are respectively set at the two ends of the pipette tip, the two sealing plugs are respectively adapted to the two ends of the pipette tip, and a plurality of limiting rings are set on the side wall of the second sealing plug. The cross-section of the limiting ring is arc-shaped, which can make the sealing plug fit more closely to the inner wall of the pipette tip when the pipette tip is operated, thereby achieving a better sealing effect and avoiding the inner wall of the pipette tip from being contaminated before use, resulting in inaccurate experimental results.

[0007] Furthermore, the side wall of the second filter screen is fixedly connected to the inner side wall of the suction head;

[0008] Through the above technical solution, the stability of the filter element is effectively improved.

[0009] Furthermore, the first sealing plug and the second sealing plug are both made of rubber material;

[0010] Through the above technical solution, the sealing plug can be effectively fitted to the inner wall of the suction head.

[0011] Furthermore, the inner side walls of the plurality of limit rings are respectively fixedly connected to the side walls of the second sealing plug, and the cross-sections of the plurality of limit rings are all arc structures, and the plurality of limit rings are all made of rubber material;

[0012] Through the above technical solution, the sealing effect is effectively improved.

[0013] Furthermore, some of the filter particles are PE particles;

[0014] Through the above technical solution, by setting the filter element structure, setting multiple filter particles between the two first filter screens, and setting the filter material into a granular shape, the contact area between the sample to be tested and the filter particles can be effectively increased, and the filtering efficiency of the liquid sample can be effectively improved.

[0015] Furthermore, the second filter screen is made of polyethylene;

[0016] Through the above technical solution, polyethylene material is used in the second filter. The filter made of polyethylene has the advantages of good chemical stability and resistance to most acid and alkali corrosion, which can increase the service life. The polyethylene filter has a low cost and is an economical and practical filter material.

[0017] Furthermore, the side wall of the first sealing plug and the inner side wall of the suction head are adapted to each other at a lower position;

[0018] Through the above technical solution, the sealing effect on the bottom end of the suction head is effectively improved.

[0019] Furthermore, the side wall of the suction head is provided with anti-slip patterns;

[0020] Through the above technical solution, the gripping effect of the staff is effectively improved to prevent falling.

[0021] The utility model has the following beneficial effects:

[0022] 1. In the utility model, by setting a main body, a first sealing plug and a second sealing plug are respectively set at both ends of the pipette tip, the two sealing plugs are respectively adapted to the two ends of the pipette tip, and a plurality of limiting rings are set on the side wall of the second sealing plug. The cross-section of the limiting ring is an arc shape, which can make the sealing plug fit more closely to the inner wall of the pipette tip when the pipette tip is operated, thereby achieving a better sealing effect and avoiding the inner wall of the pipette tip from being contaminated before use, resulting in inaccurate experimental results.

[0023] 2. In the present invention, by setting a filter element structure, a plurality of filter particles are set between the two first filter screens, and the filter material is set into a granular shape, which can effectively increase the contact area between the sample to be detected and the filter particles, and effectively improve the filtering efficiency of the liquid sample.

[0024] 3. In the utility model, polyethylene material is used in the second filter screen. The filter screen made of polyethylene has the advantages of good chemical stability and resistance to most acid and alkali corrosion, which can increase the service life. The polyethylene filter screen has a low cost and is an economical and practical filter material. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A three-dimensional diagram of an anti-pollution filter tip proposed by the utility model;

[0026] Figure 2 This is a front view of an anti-pollution filter tip proposed by the utility model;

[0027] Figure 3 A cross-sectional view of an anti-pollution filter element pipette tip proposed by the utility model;

[0028] Figure 4 for Figure 3 Enlarged view of point A in the middle.

[0029] Legend:

[0030] 1. Main body; 101. Fixed block; 102. Suction head; 103. First sealing plug; 104. Second sealing plug; 105. Limiting ring; 2. Filter element; 201. Filter particles; 202. First filter screen; 203. Second filter screen. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in 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 in 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.

[0032] Reference Figure 1-4, an embodiment provided by the utility model: an anti-pollution filter element suction head, comprising a main body 1 and a filter element 2, the filter element 2 is arranged inside the main body 1, the main body 1 comprises a suction head 102, a first sealing plug 103 is slidably connected to the bottom end of the inner side wall of the suction head 102, a second sealing plug 104 is slidably connected to the top end of the inner side wall of the suction head 102, a plurality of limiting rings 105 are arranged on the side wall of the second sealing plug 104 in a linear array, a fixed block 101 is fixedly connected to the top end of the second sealing plug 104, the filter element 2 comprises two first filter screens 202, a plurality of filter particles 201 are arranged between the two first filter screens 202, and a first filter screen 203 is arranged near the middle of the suction head 102 02 is fixedly connected to the bottom end with a second filter screen 203, and the two first filter screens 202 are fixedly connected to the inner wall of the suction head 102. By setting the main body 1, a first sealing plug 103 and a second sealing plug 104 are respectively set at both ends of the suction head 102, and the two sealing plugs are respectively adapted to the two ends of the suction head 102, and a plurality of limiting rings 105 are set on the side wall of the second sealing plug 104. The cross-section of the limiting ring 105 is arc-shaped, which can make the sealing plug fit more closely to the inner wall of the suction head 102 when the suction head 102 is operated, so as to achieve a better sealing effect and avoid the inner wall of the suction head 102 from being contaminated before use, resulting in inaccurate experimental results.

[0033] The side wall of the second filter screen 203 is fixedly connected to the inner wall of the suction head 102, the first sealing plug 103 and the second sealing plug 104 are both made of rubber, the inner walls of the plurality of limit rings 105 are respectively fixedly connected to the side walls of the second sealing plug 104, and the cross-sections of the plurality of limit rings 105 are all arc structures, the plurality of limit rings 105 are all made of rubber, the plurality of filter particles 201 are all PE particles, the second filter screen 203 is made of polyethylene, the side wall of the first sealing plug 103 and the inner wall of the suction head 102 are mutually adapted at the lower position, and the side wall of the suction head 102 It is provided with anti-slip patterns, and by setting the filter element 2 structure, a plurality of filter particles 201 are set between the two first filter screens 202, and the filter material is set to be granular, which can effectively increase the contact area between the sample to be detected and the filter particles 201, and effectively improve the filtering efficiency of the liquid sample. Polyethylene material is used in the second filter screen 203. The filter screen made of polyethylene has the advantages of good chemical stability and resistance to most acid and alkali corrosion, which can increase the service life. In addition, the polyethylene filter screen has a low cost and is an economical and practical filter material.

[0034] Working principle: by setting the main body 1, a first sealing plug 103 and a second sealing plug 104 are respectively set at the two ends of the suction head 102, the two sealing plugs are respectively adapted to the two ends of the suction head 102, and a plurality of limiting rings 105 are set on the side wall of the second sealing plug 104, the cross section of the limiting ring 105 is arc-shaped, which can make the sealing plug fit the inner wall of the suction head 102 more closely when the suction head 102 is operated, so as to achieve a better sealing effect and avoid the inner wall of the suction head 102 from being contaminated before use, resulting in inaccurate experimental results. By setting the filter element 2 structure, a plurality of filter particles 201 are set between the two first filter screens 202, and the filter material is set to be granular, which can effectively increase the contact area between the sample to be detected and the filter particles 201, and effectively improve the filtering efficiency of the liquid sample. Polyethylene material is used in the second filter screen 203. The filter screen made of polyethylene has the advantages of good chemical stability and resistance to most acid and alkali corrosion, which can improve the service life. The polyethylene filter screen has a low cost and is an economical and practical filter material.

[0035] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. 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 pollution-proof filter element pipette tip, comprising a main body (1) and a filter element (2), wherein the filter element (2) is arranged inside the main body (1), and is characterized in that: The main body (1) comprises a suction head (102), the bottom end of the inner wall of the suction head (102) is slidably connected to a first sealing plug (103), the top end of the inner wall of the suction head (102) is slidably connected to a second sealing plug (104), the side wall of the second sealing plug (104) is provided with a plurality of limiting rings (105) in a linear array, the top end of the second sealing plug (104) is fixedly connected to a fixing block (101), the filter element (2) comprises two first filter screens (202), a plurality of filter particles (201) are arranged between the two first filter screens (202), the bottom end of the first filter screen (202) near the middle of the suction head (102) is fixedly connected to the second filter screen (203), and the two first filter screens (202) are fixedly connected to the inner wall of the suction head (102).

2. The anti-pollution filter tip according to claim 1, characterized in that: The side wall of the second filter screen (203) is fixedly connected to the inner side wall of the suction head (102).

3. The anti-pollution filter tip according to claim 1, characterized in that: The first sealing plug (103) and the second sealing plug (104) are both made of rubber.

4. The anti-pollution filter tip according to claim 1, characterized in that: The inner side walls of the plurality of limit rings (105) are respectively fixedly connected to the side walls of the second sealing plug (104), and the cross-sections of the plurality of limit rings (105) are all arc structures, and the plurality of limit rings (105) are all made of rubber material.

5. The anti-pollution filter tip according to claim 1, characterized in that: Some of the filter particles (201) are PE particles.

6. The anti-pollution filter tip according to claim 1, characterized in that: The second filter screen (203) is made of polyethylene.

7. The anti-pollution filter tip according to claim 1, characterized in that: The side wall of the first sealing plug (103) and the inner side wall of the suction head (102) are adapted to each other at a lower position.

8. The anti-pollution filter tip according to claim 1, characterized in that: The side wall of the suction head (102) is provided with anti-slip patterns.

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