A needle filter assisted filtration device

Abstract

The utility model relates to laboratory filtration technical field, and disclose a needle filter auxiliary filtration device, this needle filter auxiliary filtration device, including syringe, bottom is provided with the needle filter body for filtering liquid, still include auxiliary support mechanism, auxiliary support mechanism includes the mobile seat of setting in the syringe outside, and the mobile seat inner wall diameter is adapted with the syringe outside, the mobile seat outside equidistance is provided with multiple groups of connecting shaft spare, the inside movable mounting of connecting shaft spare has telescopic link, the output end of telescopic link is fixed with the axle rest, the inside movable mounting of axle rest has sucking disc. The device fixes syringe through the mobile seat and screw rod, rubber cap cooperation, telescopic link, connecting shaft spare, axle rest and sucking disc steady support syringe, solve handheld filter shaking problem, improve the accuracy and stability of liquid drop after filtration.

Description

Technical Field

[0001] This utility model relates to the field of laboratory filtration technology, specifically to an auxiliary filtration device for a needle-type filter. Background Technology

[0002] In biological microscopic sample observation experiments, biological samples are often first processed to make them into liquid form, and then filtered with a needle filter to remove impurities and obtain a pure sample solution. This solution is then dropped onto a glass slide for observation and analysis under a microscope. In order to clearly observe cell structure or microbial characteristics, the solution containing the sample must be filtered through a needle filter and then carefully dropped onto the surface of the glass slide to make a temporary slide.

[0003] When filtering biological samples using a handheld syringe through a needle filter, slight hand tremors can affect the stability and accuracy of the filtration, leading to deviations in the position and amount of liquid droplets. When the filtered liquid is subsequently dropped onto a glass slide for microscopic observation, these deviations and unevenness result in poor sample distribution on the slide, making it impossible to form an ideal observation area. Therefore, there is an urgent need to develop a needle filter-assisted filtration device to solve these practical problems. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides a needle-type filter-assisted filtration device, which solves the problem that slight hand tremors during filtration can affect the stability and accuracy of filtration, leading to deviations in the position and amount of liquid droplets, resulting in poor sample distribution on the slide and the inability to form an ideal observation area.

[0005] To achieve the above objectives, this utility model provides a needle-type filter auxiliary filtration device through the following technical solution: a syringe, wherein the bottom of the syringe is provided with a needle-type filter body for filtering liquids.

[0006] It also includes an auxiliary support mechanism, which includes a movable seat disposed on the outside of the syringe, and the inner diameter of the movable seat is adapted to the outside of the syringe. Multiple sets of connecting shafts are equidistantly arranged on the outside of the movable seat. A telescopic rod is movably installed on the inner side of the connecting shaft. A shaft frame is fixedly connected to the output end of the telescopic rod. A suction cup is movably installed on the inner side of the shaft frame. A component for fixing and positioning the movable seat is also provided on one side of the movable seat.

[0007] Preferably, the positioning component includes a screw disposed on one side of the movable seat, and a rubber cap is fixedly connected to one end of the screw.

[0008] Preferably, the number of connecting shafts is at least three sets, and the connecting shafts are designed to be radially distributed around the axis of the movable seat.

[0009] Preferably, it also includes a metering component disposed on one side of the top of the movable seat. The metering component includes a mounting frame, which is located on one side of the syringe and fixedly connected to one side of the top of the movable seat. A scale plate is installed through the inside of the mounting frame, and an abutment plate is fixedly connected to the top of the scale plate.

[0010] Preferably, an observation slot is provided on one side of the mounting bracket for observing the values ​​on the scale plate surface.

[0011] Preferably, the scale on the surface of the scale plate is in millimeters, and the spacing between adjacent scale lines is equal, which facilitates the determination of the moving position of the contact plate.

[0012] This invention provides an auxiliary filtration device for a needle-type filter. Compared with the prior art, it has the following advantages.

[0013] 1. This device uses a movable base, screw, and rubber cap to fix the syringe, while the telescopic rod, connecting shaft, shaft frame, and suction cup provide stable support for the syringe, solving the problem of handheld filtration shaking and improving the accuracy and stability of the filtered liquid dripping. After the operation is completed, the syringe and auxiliary support mechanism can be easily separated by turning the screw in the opposite direction, retracting the telescopic rod, and sliding down the movable base, facilitating quick installation and disassembly.

[0014] 2. Insert the scale plate into the mounting bracket. Use the observation slot to check the scale plate value to determine the position of the contact plate. By rotating the knob on one side of the scale plate, you can adjust its position in the mounting bracket. After adjustment, fix the knob in place so that the contact plate restricts the movement of the syringe piston, achieving precise quantitative liquid extraction and solving the problem of difficulty in accurately controlling the amount of liquid extracted during filtration. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the appearance of the present utility model;

[0016] Figure 2 This is a partial schematic diagram of the auxiliary support mechanism of this utility model;

[0017] Figure 3 This is a schematic diagram illustrating the use of the auxiliary support mechanism of this utility model;

[0018] Figure 4 This is a partial schematic diagram of the quantitative component of this utility model.

[0019] In the diagram: 1. Syringe; 101. Needle filter body; 2. Auxiliary support mechanism; 201. Movable seat; 202. Connecting shaft; 203. Telescopic rod; 204. Shaft bracket; 205. Suction cup; 206. Screw; 207. Rubber cap; 3. Metering component; 301. Mounting bracket; 302. Scale plate; 303. Contact plate; 304. Observation slot. Detailed Implementation

[0020] 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.

[0021] First implementation method:

[0022] refer to Figure 1-4 A needle-type filter auxiliary filtration device includes a syringe 1, and a needle-type filter body 101 for filtering liquid is provided at the bottom of the syringe 1.

[0023] It also includes an auxiliary support mechanism 2, which includes a movable seat 201 disposed on the outside of the syringe 1, and the inner diameter of the movable seat 201 is adapted to the outside of the syringe 1. Multiple sets of connecting shafts 202 are equidistantly disposed on the outside of the movable seat 201. A telescopic rod 203 is movably installed on the inner side of the connecting shaft 202. A shaft frame 204 is fixedly connected to the output end of the telescopic rod 203. A suction cup 205 is movably installed on the inner side of the shaft frame 204. A component for fixing and positioning the movable seat 201 is also provided on one side of the movable seat 201.

[0024] The positioning component includes a screw 206 disposed on one side of the movable seat 201, and a rubber cap 207 is fixedly connected to one end of the screw 206. The number of connecting shafts 202 is at least three sets, and the connecting shafts 202 are designed to be radially distributed around the axis of the movable seat 201.

[0025] After moving the movable seat 201 to correspond to the bottom of the syringe 1, move the movable seat 201 to the outside of the syringe 1. By rotating the screw 206 through the rubber cap 207, the movable seat 201 can be tightly pressed against the outside of the syringe 1, thereby enhancing the overall stability.

[0026] Push the telescopic rod 203 to move it in an arc shape around the connecting shaft 202, so that the telescopic rod 203 can be flexibly adjusted in direction. When it is necessary to fix the syringe 1, extend the telescopic rod 203 so that the suction cup 205 on the shaft frame 204 contacts the appropriate support plane and adheres to it, thereby stabilizing and supporting the syringe 1.

[0027] When it is necessary to move or remove the device, simply pull the telescopic rod 203 gently to separate the suction cup 205 from the support plane, and the suction cup 205 can be reset. This solves the problem of easy shaking and instability when the handheld syringe 1 is used for filtration, and achieves the function of stabilizing the syringe 1 and improving the accuracy and stability of the filtration operation.

[0028] After the operation is completed, the steps to separate the syringe 1 from the auxiliary support mechanism 2 are as follows: First, rotate the screw 206 in the opposite direction by the rubber cap 207 to release the fixation of the movable seat 201 on the syringe 1. Then, retract the telescopic rod 203 completely to completely separate the suction cup 205 from the support plane. Finally, slide the movable seat 201 off the syringe 1 to separate the syringe 1 from the auxiliary support mechanism 2.

[0029] Second implementation method:

[0030] Due to the limited accuracy of the syringe scale and unstable human operation, it is difficult to control the amount of liquid drawn, which leads to the deviation of experimental results.

[0031] refer to Figure 4 In the second embodiment of this utility model, a quantitative component 3 is also provided on one side of the top of the movable seat 201. The quantitative component 3 includes a mounting frame 301, and the mounting frame 301 is located on one side of the syringe 1 and fixedly connected to one side of the top of the movable seat 201. A scale plate 302 is installed through the inside of the mounting frame 301, and an abutment plate 303 is fixedly connected to the top of the scale plate 302.

[0032] The mounting bracket 301 also has an observation slot 304 on one side for observing the values ​​on the surface of the scale plate 302. The scale on the surface of the scale plate 302 is in millimeters, and the spacing between adjacent scale lines is equal, which makes it easy to determine the moving position of the contact plate 303.

[0033] The scale plate 302 is inserted into the mounting bracket 301. The value on the scale plate 302 can be viewed through the observation slot 304 to determine the position of the contact plate 303. A knob is provided on one side of the scale plate 302. Rotating the knob can adjust the position of the scale plate 302 in the mounting bracket 301. When the desired position is reached, the knob can fix the position of the scale plate 302, thereby restricting the movement of the piston of the syringe 1 by the contact plate 303, realizing the function of precise quantitative extraction of liquid, and solving the problem of difficulty in accurately controlling the amount of liquid extracted during the filtration process.

[0034] When it is necessary to remove the scale plate 302, rotate the knob in the opposite direction to release the fixation of the scale plate 302, and then directly pull the scale plate 302 out of the mounting bracket 301.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A needle-type filter auxiliary filtration device, comprising a syringe (1), wherein the bottom of the syringe (1) is provided with a needle-type filter body (101) for filtering liquid, characterized in that... ； It also includes an auxiliary support mechanism (2), which includes a movable seat (201) disposed on the outside of the syringe (1), and the inner diameter of the movable seat (201) is adapted to the outside of the syringe (1). Multiple sets of connecting shafts (202) are equidistantly arranged on the outside of the movable seat (201). A telescopic rod (203) is movably installed on the inside of the connecting shaft (202). A shaft frame (204) is fixedly connected to the output end of the telescopic rod (203). A suction cup (205) is movably installed on the inside of the shaft frame (204). A component for fixing and positioning the moving position of the movable seat (201) is also provided on one side of the movable seat (201).

2. The needle-type filter auxiliary filtration device according to claim 1, characterized in that: The positioning component includes a screw (206) disposed on one side of the movable seat (201), and a rubber cap (207) is fixedly connected to one end of the screw (206).

3. The needle-type filter auxiliary filtration device according to claim 1, characterized in that: The number of connecting shafts (202) is at least three sets, and the connecting shafts (202) are designed to be radially distributed around the axis of the movable seat (201).

4. The needle-type filter auxiliary filtration device according to claim 1, characterized in that: It also includes a metering component (3) disposed on one side of the top of the movable seat (201). The metering component (3) includes a mounting bracket (301), which is located on one side of the syringe (1) and fixedly connected to one side of the top of the movable seat (201). A scale plate (302) is installed through the inside of the mounting bracket (301), and an abutment plate (303) is fixedly connected to the top of the scale plate (302).

5. The needle-type filter auxiliary filtration device according to claim 4, characterized in that: The mounting bracket (301) also has an observation slot (304) on one side for observing the values ​​on the surface of the scale plate (302).

6. The needle-type filter auxiliary filtration device according to claim 4, characterized in that: The scale plate (302) has millimeter-sized graduations on its surface, and the spacing between adjacent graduation lines is equal, which facilitates determining the moving position of the contact plate (303).

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