Organic reagent pipettor

Abstract

The utility model discloses an organic reagent pipettor, which relates to the technical field of experimental equipment and comprises a pipette, a mounting frame is sleeved on the pipette, two groups of clamping mechanisms are mounted in the mounting frame, a moving mechanism is arranged on the front side of the mounting frame and comprises a threaded plate, and a quantifying mechanism is mounted on the threaded plate. A top plate is arranged at the top of the quantifying mechanism, the quantifying mechanism comprises two fixing plates, the two fixing plates are fixedly connected to the two sides of the threaded plate respectively, and fixing blocks are fixedly connected into the fixing plates. The pipette has the beneficial effects that when a handle on the pipette is pulled to extract liquid, a top plate can be driven to move upwards, so that a connecting plate is utilized to drive two sliding rods to move upwards, and through upward movement of the sliding rods, a limiting block can be driven to move upwards until the limiting block moves to the bottom of a fixed block, so that the movement distance of the sliding rods is limited; and then the lifting height of the top plate is limited, quantitative extraction is achieved, and errors are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of experimental equipment, in particular to an organic reagent pipette. Background Art

[0002] As a metering tool, a pipette (also known as a micropipette) mainly solves the problems of low precision and poor repeatability when transferring small amounts of liquid in a laboratory. Organic reagent pipettes are widely used in biological, chemical, medical and other fields. Pipettes play an irreplaceable role in laboratory work. It improves the accuracy, repeatability and efficiency of experiments, reduces the risk of cross-contamination, and protects the health and safety of laboratory personnel. It is an important and indispensable tool in modern laboratories.

[0003] For example, the patent document with the publication number CN214514673U discloses an organic reagent quantitative pipetting device for laboratory use. By installing a support plate above the display window, the slider at the edge of the lower surface of the support plate can cooperate with the chute to slide, and a convex lens is embedded inside the support plate. By moving the support plate, the convex lens corresponds to the display window, and the limit block slides inside the limit groove. At the same time, the rubber block fits with the inner wall of the limit groove. Therefore, during the process of dragging the support plate to move, the rubber block abuts against the inner wall of the limit groove, so as to play a good limiting role on the support plate, so that the convex lens magnifies the numbers on the display window, which is beneficial for the operator to distinguish the numbers on the display window and avoid operation errors when adjusting the liquid suction volume.

[0004] During the use of the above patent, although the convex lens can be used to more clearly distinguish the numbers on the display window and avoid operation errors when adjusting the liquid suction volume, when using the device to extract liquid, in order to quantitatively extract a certain volume of liquid, the operator needs to lean over and continuously observe the volume of the extracted liquid, which is rather cumbersome. Summary of the Utility Model

[0005] The purpose of the utility model is to provide an organic reagent pipette to solve the above problems.

[0006] The utility model realizes the above purpose through the following technical solutions:

[0007] An organic reagent pipette includes a pipetting gun, on which an installation frame is sleeved. Two sets of clamping mechanisms are installed in the installation frame. A moving mechanism is arranged on the front side of the installation frame. The moving mechanism includes a threaded plate, on which a quantitative mechanism is installed. A top plate is arranged at the top of the quantitative mechanism. The quantitative mechanism includes a fixed plate. There are two fixed plates, which are respectively fixedly connected to both sides of the threaded plate. A fixed block is fixedly connected in the fixed plate. A sliding rod is slidably connected in the fixed block. An observation rod is fixedly connected to one side of the fixed plate. A limiting block is fixedly connected to the bottom of the sliding rod. The tops of the two sliding rods are fixedly connected to a connecting plate. The top plate is fixedly connected to the top of the connecting plate.

[0008] Preferably, the top plate is an L-shaped plate made of aluminum alloy.

[0009] Preferably, the observation rod is a cylindrical rod made of a transparent material.

[0010] Preferably, the clamping mechanism includes a threaded rod, which is threadedly connected to the side wall of the installation frame. A knob is fixedly connected to one side of the threaded rod. The other side of the threaded rod is rotatably connected to a sliding plate, which is slidably connected to the inner wall of the installation frame. A connecting column is fixedly connected to one side of the sliding plate. A clamping plate is fixedly connected to one side of the connecting column.

[0011] Preferably, the clamping plate is an arc-shaped plate.

[0012] Preferably, the moving mechanism includes a mounting plate, which is fixedly connected to the front side of the installation frame. A lead screw is installed on the front side of the mounting plate through a bearing seat. The threaded plate is threadedly connected to the lead screw. A sliding groove is formed on the front side of the mounting plate. The threaded plate is slidably connected in the sliding groove. A turntable is fixedly connected to the bottom of the lead screw.

[0013] The beneficial effects are as follows: When pulling the handle on the pipetting gun to draw liquid, it can drive the top plate to move upward, thereby driving the two sliding rods to move upward through the connecting plate. By the upward movement of the sliding rods, the limiting block can be driven to move upward until the limiting block moves to the bottom of the fixed block, so as to limit the moving distance of the sliding rod, and further limit the rising height of the top plate, realizing quantitative extraction and avoiding errors.

[0014] The additional technical features and their advantages of the present utility model will be more clearly described in the following description content, or can be understood through the specific practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings are used to provide a further understanding of the present utility model and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present utility model, but do not constitute a limitation to the present utility model. In the drawings:

[0016] Figure 1is a perspective view of an organic reagent pipette according to the present utility model;

[0017] Figure 2 is a perspective view of a clamping mechanism of an organic reagent pipette according to the present utility model;

[0018] Figure 3 is an enlarged view of the structure at position A of an organic reagent pipette according to the present utility model;

[0019] Figure 4 is an enlarged view of the structure at position B of an organic reagent pipette according to the present utility model.

[0020] Explanation of reference numerals is as follows: 1, pipette gun; 101, mounting frame; 201, threaded rod; 202, knob; 203, sliding plate; 204, connecting column; 205, clamping plate; 301, mounting plate; 302, lead screw; 303, threaded plate; 304, turntable; 305, sliding groove; 401, fixing plate; 402, fixing block; 403, sliding rod; 404, observation rod; 405, limiting block; 406, connecting plate; 5, top plate. Detailed implementation manners

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments.

[0022] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model.

[0023] The present utility model will be further described below in conjunction with the accompanying drawings:

[0024] As Figures 1 - 4 shown, an organic reagent pipette includes a pipette gun 1, a mounting frame 101 is sleeved on the pipette gun 1, two sets of clamping mechanisms for clamping and fixing are installed in the mounting frame 101, a moving mechanism for lifting is arranged on the front side of the mounting frame 101, the moving mechanism includes a threaded plate 303, a quantitative mechanism for quantitative extraction is installed on the threaded plate 303, a top plate 5 is arranged at the top of the quantitative mechanism, and the top plate 5 is an L-shaped plate made of aluminum alloy.

[0025] The clamping mechanism includes a threaded rod 201, which is threadedly connected to the side wall of the mounting frame 101. A knob 202 is welded to one side of the threaded rod 201, and the other side of the threaded rod 201 is rotatably connected to a sliding plate 203 through a bearing. The sliding plate 203 is slidably connected to the inner wall of the mounting frame 101. A connecting column 204 is bolted to one side of the sliding plate 203, and a clamping plate 205 is bolted to one side of the connecting column 204. The clamping plate 205 is an arc-shaped plate. By rotating the knob 202 to rotate the threaded rod 201, the threaded rod 201 is driven to rotate and move, thereby driving the sliding plate 203 to slide. By the sliding of the sliding plate 203, the connecting column 204 is driven to move, and then the clamping plate 205 is driven to move. By driving the two clamping plates 205 in the two clamping mechanisms to approach each other, the pipette 1 is clamped, and then the fixed mounting frame 101 is realized.

[0026] The moving mechanism includes a mounting plate 301, which is bolted to the front side of the mounting frame 101. A lead screw 302 is mounted on the front side of the mounting plate 301 through a bearing seat. A threaded plate 303 is threadedly connected to the lead screw 302. A sliding groove 305 is formed on the front side of the mounting plate 301, and the threaded plate 303 is slidably connected in the sliding groove 305. A turntable 304 is welded to the bottom of the lead screw 302. By rotating the turntable 304, the lead screw 302 is driven to rotate, and then the threaded plate 303 is driven to slide. The metering mechanism includes a fixing plate 401. There are two fixing plates 401, and the two fixing plates 401 are respectively bolted to both sides of the threaded plate 303. A fixing block 402 is welded in the fixing plate 401, and a sliding rod 403 is slidably connected in the fixing block 402. An observation rod 404 is screwed to one side of the fixing plate 401. The observation rod 404 is a cylindrical rod made of a transparent material. A limiting block 405 is bolted to the bottom of the sliding rod 403. The tops of the two sliding rods 403 are bolted to a connecting plate 406, and a top plate 5 is bolted to the top of the connecting plate 406. By the sliding of the threaded plate 303, the fixing plate 401 is driven to move, and then the fixing plate 401 is moved to the target height. At the same time, by the movement of the fixing plate 401, the observation rod 404 can be driven to move, so that the staff can use the observation rod 404 to observe the position of the fixing plate 401, which is more convenient for adjusting the height of the fixing plate 401. When pulling the handle on the pipette 1 to draw liquid, the top plate 5 can be driven to move upward, so that the two sliding rods 403 are driven to move upward through the connecting plate 406. By the upward movement of the sliding rod 403, the limiting block 405 can be driven to move upward until the limiting block 405 is moved to the bottom of the fixing block 402, so as to limit the moving distance of the sliding rod 403, and then limit the rising height of the top plate 5, realizing quantitative extraction and avoiding errors.

[0027] Working principle: When in use, first put the installation frame 101 on the pipette 1, and then rotate the threaded rod 201 through the knob 202, so as to drive the threaded rod 201 to rotate and move, and then drive the sliding plate 203 to slide. Through the sliding of the sliding plate 203, the connecting column 204 is driven to move, and then the clamping plate 205 is driven to move. By driving the two clamping plates 205 in the two clamping mechanisms to approach each other, the pipette 1 is clamped, and then the fixed installation frame 101 is realized. Then, by rotating the turntable 304, the lead screw 302 is driven to rotate, and then the threaded plate 303 is driven to slide. Through the sliding of the threaded plate 303, the fixed plate 401 is driven to move, and then the fixed plate 401 is moved to the target height. At the same time, by moving the fixed plate 401, the observation rod 404 can be driven to move, so that the staff can use the observation rod 404 to observe the position of the fixed plate 401, which is more convenient for adjusting the height of the fixed plate 401. Then, by pulling the handle on the pipette 1, the liquid is extracted. When pulling the handle, the top plate 5 can be driven to move upward, so as to drive the two sliding rods 403 to move upward through the connecting plate 406. By moving the sliding rods 403 upward, the limit block 405 can be driven to move upward until the limit block 405 is moved to the bottom of the fixed block 402, so as to limit the moving distance of the sliding rod 403, and then limit the rising height of the top plate 5, realizing quantitative extraction and avoiding errors. When the pipette 1 needs to be cleaned, by reversing the knob 202 in the two clamping mechanisms, the two clamping plates 205 are driven to move away from each other, and then the clamping of the pipette 1 is released. Then, the pipette 1 can be taken out for cleaning.

[0028] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of the present invention claimed is defined by the appended claims and their equivalents.

Claims

1. An organic reagent pipette, comprising a pipette gun (1), characterized in that: The pipette gun (1) is sleeved with a mounting frame (101), two sets of clamping mechanisms are installed in the mounting frame (101), a moving mechanism is arranged on the front side of the mounting frame (101), the moving mechanism comprises a threaded plate (303), a quantitative mechanism is installed on the threaded plate (303), and a top plate (5) is arranged on the top of the quantitative mechanism; The quantitative mechanism comprises a fixed plate (401), wherein the fixed plates (401) are in two pieces, and the two fixed plates (401) are respectively fixedly connected to the two sides of the threaded plate (303); a fixed block (402) is fixedly connected to the fixed plate (401); a sliding rod (403) is slidably connected to the fixed block (402); an observation rod (404) is fixedly connected to one side of the fixed plate (401); a limit block (405) is fixedly connected to the bottom of the sliding rod (403); a connecting plate (406) is fixedly connected to the top of the two sliding rods (403); and the top plate (5) is fixedly connected to the top of the connecting plate (406).

2. An organic reagent pipette according to claim 1, characterized in that: The top plate (5) is an L-shaped plate made of aluminum alloy.

3. An organic reagent pipette according to claim 1, characterized in that: The observation rod (404) is a cylindrical rod made of transparent material.

4. An organic reagent pipette according to claim 1, characterized in that: The clamping mechanism comprises a threaded rod (201), the threaded rod (201) being threadedly connected to the side wall of the mounting frame (101), a knob (202) being fixedly connected to one side of the threaded rod (201), a sliding plate (203) being rotatably connected to the other side of the threaded rod (201), the sliding plate (203) being slidably connected to the inner wall of the mounting frame (101), a connecting column (204) being fixedly connected to one side of the sliding plate (203), and a clamping plate (205) being fixedly connected to one side of the connecting column (204).

5. An organic reagent pipette according to claim 4, characterized in that: The clamping plate (205) is an arc-shaped plate.

6. An organic reagent pipette according to claim 1, characterized in that: The moving mechanism comprises a mounting plate (301), wherein the mounting plate (301) is fixedly connected to the front side of the mounting frame (101), a lead screw (302) is mounted on the front side of the mounting plate (301) via a bearing seat, the threaded plate (303) is threadedly connected to the lead screw (302), a sliding groove (305) is provided on the front side of the mounting plate (301), the threaded plate (303) is slidably connected to the sliding groove (305), and a turntable (304) is fixedly connected to the bottom of the lead screw (302).

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