A kitchen paper chemical detection pipette tip

Abstract

This utility model discloses a pipette tip for chemical testing of kitchen paper, including a tip body, which comprises a main body, a connecting part, and a suction head. The inner wall of the connecting part is provided with two sets of annular sealing ribs. A removable filter membrane is provided between the suction head and the main body. An observation window with graduations is provided on one side of the main body. When the pipette is tightly connected to the tip through the annular sealing ribs of the connecting part, leakage can be prevented. The liquid is drawn in through the suction head and first passes through the removable filter membrane to filter out fibrous impurities and grease in the kitchen paper sample. The operator can monitor the liquid volume in real time through the observation window and graduations on the side of the main body. After the pipette is completed, the suction head can be unscrewed to clean or replace the filter membrane to ensure the accuracy of the next test. Thus, the above structure effectively improves the accuracy, convenience, and reliability of pipetting for chemical testing of kitchen paper.

Description

Technical Field

[0001] This utility model relates to the field of chemical detection tools, specifically a pipette tip for chemical detection of kitchen paper. Background Technology

[0002] In the field of chemical testing of kitchen paper products (including napkins, kitchen paper, food packaging paper, etc.), pipette tips are the core tools for sample pretreatment and reagent transfer, and their performance directly affects the accuracy of test results and operational efficiency.

[0003] However, existing pipette tips have several problems that need to be solved when testing kitchen paper: when drawing up the suspension after soaking kitchen paper, paper fiber impurities can easily clog the tip, which not only causes inaccurate pipetting but also prevents the tip from working continuously, thus affecting the testing efficiency and the accuracy of the results. Moreover, the connection between the tip and the pipette is generally not sealed well, which may lead to leakage, further interfering with the testing process. Therefore, it is necessary to design a new pipette tip for chemical testing of kitchen paper to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a pipette tip for chemical detection on kitchen paper to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a pipette tip for chemical detection of kitchen paper, comprising a tip body, the tip body comprising a main body, a connecting part disposed at one end of the main body and a suction head disposed at the other end of the main body, the inner wall of the connecting part being provided with two sets of annular sealing ribs, a detachable filter membrane being provided between the suction head and the main body, and an observation window being provided on one side of the main body, the observation window being marked with scale lines.

[0006] Preferably, the filter membrane is made of glass fiber and its surface is coated with a polytetrafluoroethylene oleophobic layer, and the edge of the filter membrane is provided with a sealing gasket.

[0007] Preferably, one end of the main body is provided with a connecting groove, the filter membrane and the sealing gasket are installed inside the connecting groove, and one end of the liquid suction head is provided with a threaded joint that is threadedly connected to the connecting groove.

[0008] Preferably, the gun head body is made of polypropylene, and the inner wall of the gun head body is smoothed.

[0009] Preferably, the annular sealing rib is made of silicone.

[0010] Preferably, the accuracy of the scale line is 0.1 ml.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. This utility model prevents leakage when the pipette is tightly connected to the pipette tip via the annular sealing rib of the connecting part. The liquid is drawn in through the aspiration head and first passes through a detachable filter membrane to filter out fibrous impurities and grease from the kitchen paper sample. The operator can monitor the liquid volume in real time through the observation window and scale lines on the side of the main body. After the pipetting is completed, the aspiration head can be unscrewed to clean or replace the filter membrane to ensure the accuracy of the next test. Thus, through the above structure, the accuracy, convenience and reliability of pipetting for chemical testing of kitchen paper are effectively improved. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0014] Figure 2 This is a side view and a top view of the present invention;

[0015] Figure 3 This is a schematic diagram of the structural breakdown of this utility model. Figure 1 ;

[0016] Figure 4 This is a schematic diagram of the structural breakdown of this utility model. Figure 2 ;

[0017] Figure 5 for Figure 3 Enlarged view of part A in the image.

[0018] In the diagram: 1. Main body, 2. Connecting part, 3. Sealing rib, 4. Connecting groove, 5. Filter membrane, 6. Sealing gasket, 7. Liquid suction head, 8. Threaded joint, 9. Observation window, 10. Scale line. 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. 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.

[0020] Example 1

[0021] Please refer to Figure 1-5 As shown, this utility model provides a pipette tip for chemical detection of kitchen paper, including a tip body, the tip body including a main body 1, a connecting part 2 provided at one end of the main body 1 and a suction head 7 provided at the other end of the main body 1. The inner wall of the connecting part 2 is provided with two sets of annular sealing ribs 3. A detachable filter membrane 5 is provided between the suction head 7 and the main body 1. An observation window 9 is provided on one side of the main body 1, and scale lines 10 are marked on the observation window 9.

[0022] Specifically, when the pipette is tightly connected to the pipette tip via the annular sealing rib 3 of the connecting part 2, leakage can be prevented. The liquid is drawn in through the aspiration head 7 and first passes through the detachable filter membrane 5 to filter out fibrous impurities and grease in the kitchen paper sample. The operator can monitor the liquid volume in real time through the observation window 9 and scale lines 10 on the side of the main body 1. After the pipetting is completed, the aspiration head 7 can be unscrewed to clean or replace the filter membrane 5 to ensure the accuracy of the next test. Thus, through the above structure, the accuracy, convenience and reliability of pipetting for chemical testing of kitchen paper are effectively improved.

[0023] The filter membrane 5 is made of glass fiber and has a polytetrafluoroethylene oleophobic coating on its surface. The filter membrane 5 has a sealing gasket 6 at its edge. The glass fiber filter membrane 5, together with the polytetrafluoroethylene oleophobic coating on its surface, can efficiently filter fibrous impurities and prevent grease from adhering. The sealing gasket 6 at the edge can ensure the filtration seal and improve the filtration effect and durability.

[0024] The main body 1 has a connecting groove 4 at one end. The filter membrane 5 and the sealing gasket 6 are installed inside the connecting groove 4. The suction head 7 has a threaded connector 8 at one end that is threaded to the connecting groove 4. The filter membrane 5 and the sealing gasket 6 are installed inside the connecting groove 4 at one end of the main body 1. The suction head 7 can be threaded to the connecting groove 4 through the threaded connector 8 at one end, so that the filter membrane 5 and the sealing gasket 6 are fixed between the main body 1 and the suction head 7. When liquid is sucked in by the suction head 7, it first passes through the filter membrane 5 to filter impurities. The sealing gasket 6 can prevent liquid from leaking from the connection. At the same time, the threaded connection makes it easy to disassemble the suction head 7 to replace the filter membrane 5 and the sealing gasket 6. Thus, the design effectively improves the filtration reliability and maintenance convenience.

[0025] The nozzle body is made of polypropylene, and the inner wall of the main body 1 is smoothed. The polypropylene nozzle body combined with the smooth inner wall of the main body 1 has both chemical stability and can reduce liquid residue, thereby improving the accuracy of pipetting and the safety of use.

[0026] Among them, the annular sealing rib 3 is made of silicone. The silicone material has good elasticity, which can fit tightly against the outer wall of the pipette, enhance the connection and seal, effectively prevent leakage, and improve the stability of pipetting.

[0027] The accuracy of graduation line 10 is 0.1 ml. By setting it, the volume of liquid transfer can be precisely controlled, thereby improving the accuracy of liquid transfer in chemical testing of kitchen paper.

[0028] Working principle: First, the glass fiber filter membrane 5 with a polytetrafluoroethylene oleophobic coating and its edge sealing gasket 6 are installed inside the connecting groove 4 at one end of the polypropylene body 1. Then, the suction head 7 is threadedly connected to the connecting groove 4 through the threaded connector 8 to fix the filter membrane 5 and the sealing gasket 6. Finally, the pipette is tightly connected to the pipette head through two sets of annular sealing ribs 3 made of silicone material on the inner wall of the connecting part 2. During the suction, the liquid is drawn in through the suction head 7. The filter membrane 5 filters out fiber impurities and grease, and the sealing gasket 6 prevents leakage. The operator monitors the liquid volume through the observation window 9 and scale line 10 on the side of the body 1. After the pipette is completed, the filter membrane 5 and the sealing gasket 6 can be cleaned or replaced by unscrewing the suction head 7, thus completing the entire operation process.

[0029] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0030] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A kitchen paper chemical detection pipette tip, comprising a tip body, the tip body comprising a main body (1), a connecting part (2) arranged at one end of the main body (1), and a liquid suction head (7) arranged at the other end of the main body (1), characterized in that: The inner wall of the connecting part (2) is provided with two sets of annular sealing ribs (3), and a detachable filter membrane (5) is provided between the liquid suction head (7) and the main body (1). An observation window (9) is opened on one side of the main body (1), and a scale line (10) is marked on the observation window (9).

2. A chemical detection pipette tip for use in the food service industry as in claim 1, wherein: The filter membrane (5) is made of glass fiber and its surface is coated with a polytetrafluoroethylene oleophobic layer. The edge of the filter membrane (5) is provided with a sealing gasket (6).

3. The pipette tip for chemical detection on kitchen paper according to claim 2, characterized in that: One end of the main body (1) is provided with a connecting groove (4), the filter membrane (5) and the sealing gasket (6) are installed inside the connecting groove (4), and one end of the suction head (7) is provided with a threaded connector (8) that is threadedly connected to the connecting groove (4).

4. The chemical detection pipette tip for kitchen paper according to claim 1, characterized in that: The gun head body is made of polypropylene, and the inner wall of the main body (1) is smoothed.

5. A chemical detection pipette tip for use in the food service industry as in claim 4, wherein: The annular sealing rib (3) is made of silicone.

6. A chemical detection pipette tip for use in the detection of kitchen paper according to claim 5, characterized in that: The accuracy of the scale line (10) is 0.1 ml.

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