Laboratory pipette

Abstract

The utility model discloses a laboratory pipette, and particularly relates to the technical field of experimental equipment, the laboratory pipette comprises a base, the top of the base is provided with a top plate, the top plate is internally provided with a pipette body, the bottom of the pipette body is provided with a liquid taking pipe, and a connecting plate is arranged between the base and the top plate; the clamping mechanism comprises a mounting block and a clamping seat, the mounting block is mounted on one side of the connecting plate, the clamping seat is fixed on one side of the mounting block, and a groove is formed in the clamping seat; according to the utility model, through the arrangement of the clamping mechanism, the pipette body can be stabilized during working, so that the pipette body is not easy to shake or deviate, thereby avoiding the situation that a user needs to support the pipette body in the operation process; the hand fatigue and pressure of a user and unnecessary accidents are reduced, the accuracy and consistency of the device during liquid transfer are improved, and the safety of liquid transfer operation is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of experimental equipment, and in particular relates to a laboratory liquid transfer gun. Background Art

[0002] At present, pipettes are commonly used in molecular biology experiments. That is, through the cooperation between a syringe and a pipette or straw, researchers can accurately and repeatably move small volumes of liquid, thereby achieving accurate volume measurement and liquid transfer, and ensuring the reliability of experimental results.

[0003] A Chinese patent application numbered CN202320872648.2 discloses a pipette gun, which is provided with a pipette gun body. When a person performs pipetting, a handle is embedded and fixed through the side end face of a connecting piece, so that the person holds a liquid collection tube and pushes the handle to drive the connecting piece to move and move the piston. When the piston moves, the liquid is extracted to perform pipetting. After pipetting, the bottom end face of a second fixed rod is installed on a buffer pad 1, so that the person inserts the pipette gun body into the top plate after use and places it. After the liquid collection tube contacts the buffer pad 2, the pressure is reduced by a spring. The cushion is used to cushion the liquid and prevent damage caused by collision, thereby facilitating placement and pipetting. However, when the above-mentioned pipette is in use, the liquid collection tube is driven up and down by the pipette body to form a liquid collection and placement operation. However, it is difficult to clamp the pipette body firmly during the up and down movement of the pipette body, and it is easy to shake or shift. The user is required to support the pipette body during operation, which increases the fatigue and pressure of the user's hands and unnecessary accidents, reduces the accuracy and consistency of liquid transfer, and affects the safety of the pipetting operation. Utility Model Content

[0004] The purpose of the utility model is to provide a laboratory pipette, which, through the setting of a clamping mechanism, can stabilize the pipette body when it is working, so that the pipette body is not easy to shake or deviate, thereby avoiding the situation where the user needs to support the pipette body during operation, reducing the user's hand fatigue and pressure as well as the occurrence of unnecessary accidents, increasing the accuracy and consistency of the device when transferring liquids, improving the safety of pipetting operations, facilitating experiments, and solving the above-mentioned deficiencies in the technology.

[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a laboratory pipette gun, comprising: a base, a top plate is installed on the top of the base, a gun body is arranged inside the top plate, a liquid collection tube is installed at the bottom of the gun body, a connecting plate is arranged between the base and the top plate, and a plurality of filter holes are opened at the bottom of the liquid collection tube. Through the arrangement of the filter holes, the liquid collection tube can filter larger dirt when sucking liquid, thereby increasing the accuracy of the experiment;

[0006] The clamping mechanism includes a mounting block installed on one side of the connecting plate and a clamping seat fixed on one side of the mounting block. A groove is provided inside the clamping seat. A roller is rotatably connected inside the groove. The roller fits the gun body. An anti-deviation mechanism is provided between the clamping seat and the gun body to prevent the gun body from deviating.

[0007] Preferably, the anti-deviation mechanism comprises a fixing plate fixed to one side of the clamping seat and a positioning plate installed at the bottom of the fixing plate, and an observation mechanism for observing the deviation of the gun body is provided between the positioning plate and the gun body.

[0008] Preferably, the observation mechanism includes a movable plate attached to one side of the gun body and an observation rod fixed to one side of the movable plate, a spring is connected between the movable plate and the positioning plate, the spring is sleeved on the outside of the observation rod, and a positioning mechanism for positioning the observation rod is provided between the observation rod and the positioning plate.

[0009] Preferably, the positioning mechanism includes a positioning sleeve fixed on one side of the positioning plate and a limiting sleeve sleeved on the outside of the observation rod. The limiting sleeve is fixed to the positioning sleeve. By installing the limiting sleeve on the observation rod, the observation rod is more stable when moving and will not fall off easily, thereby increasing the accuracy of the device's observation when the gun body is offset.

[0010] Preferably, a separation mechanism for separating the clamping seat from the gun body is provided between the mounting block and the connecting plate, the separation mechanism comprises an open groove opened on one side of the connecting plate and a bidirectional screw rotatably connected to the inside of the open groove, two moving blocks are installed inside the open groove, the moving blocks are fixed to the mounting block, and the moving blocks are screwed to the outside of the bidirectional screw, and a limiting mechanism for limiting the moving blocks is provided between the moving block and the open groove.

[0011] Preferably, the limiting mechanism includes sliding grooves opened at the upper and lower ends of the opening groove and sliders fixed at the upper and lower ends of the moving block. The two sliders cooperate with the two sliding grooves. Through the mutual cooperation between the two sliders and the two sliding grooves, the moving block is smoother during the movement process.

[0012] Preferably, a liquid storage box is installed on the top of the base, and the liquid storage box corresponds to the liquid extraction pipe.

[0013] In the above technical solution, the technical effects and advantages provided by the utility model are:

[0014] 1. The clamping mechanism can stabilize the pipette body during operation, making it less likely for the pipette body to shake or deflect, thereby avoiding the need for the user to support the pipette body during operation, reducing hand fatigue and pressure on the user and the occurrence of unnecessary accidents, increasing the accuracy and consistency of the device in liquid transfer, improving the safety of pipetting operations, and facilitating experiments;

[0015] 2. Through the setting of the separation mechanism, the clamping seat and the gun body can be quickly separated, so that the gun body can be easily cleaned and disinfected, ensuring hygiene and no cross contamination during operation, and facilitating the maintenance and repair of the gun body, thereby extending the service life of the gun body. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 It is a structural schematic diagram of the gun body of the utility model;

[0019] Figure 3 It is a structural schematic diagram of the clamping mechanism of the utility model;

[0020] Figure 4 It is a structural schematic diagram of the observation mechanism of the utility model;

[0021] Figure 5 It is a structural schematic diagram of the separation mechanism of the utility model.

[0022] Description of reference numerals:

[0023] 1. Base; 2. Top plate; 3. Gun body; 4. Clamping mechanism; 5. Separation mechanism; 6. Liquid storage box; 7. Liquid extraction pipe;

[0024] 41. Fixed plate; 42. Positioning plate; 43. Movable plate; 44. Spring; 45. Observation rod; 46. Limit sleeve; 47. Mounting block; 48. Clamping seat; 49. Roller;

[0025] 51. Moving block; 52. Bidirectional screw; 53. Sliding block; 54. Sliding groove. DETAILED DESCRIPTION

[0026] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0027] The utility model provides Figure 1 and Figure 2 The laboratory pipette shown includes: a base 1, a top plate 2 is installed on the top of the base 1, a gun body 3 is arranged inside the top plate 2, a liquid collection tube 7 is installed at the bottom of the gun body 3, a connecting plate is arranged between the base 1 and the top plate 2, and a liquid storage box 6 is installed on the top of the base 1, and the liquid storage box 6 corresponds to the liquid collection tube 7.

[0028] As can be seen from the above, when in use, the base 1 is first placed where it is needed, and then the gun body 3 is moved to drive the liquid collection tube 7 to move downward, so that the liquid collection tube 7 is in contact with the liquid storage box 6, and the liquid in the liquid storage box 6 is extracted into the gun body 3 through the liquid collection tube 7, and then the gun body 3 is moved upward to drive the liquid collection tube 7 away from the liquid storage box 6. Finally, the liquid in the gun body 3 is moved to complete the pipetting operation. Through the setting of the liquid collection tube 7, the liquid at the bottom of the liquid storage box 6 can be effectively extracted, avoiding uneven extraction. At the same time, the gun body 3 can repeatedly transfer liquid, reduce operating errors, and improve experimental repeatability and consistency.

[0029] refer to Figure 3 and Figure 4 As shown, the clamping mechanism 4 includes a mounting block 47 mounted on one side of the connecting plate and a clamping seat 48 fixed on one side of the mounting block 47. A groove is provided inside the clamping seat 48. A roller 49 is rotatably connected inside the groove. The roller 49 fits with the gun body 3. An anti-deviating mechanism for preventing the gun body 3 from deviating is provided between the clamping seat 48 and the gun body 3. The anti-deviating mechanism includes a fixing plate 41 fixed on one side of the clamping seat 48 and a positioning plate 42 installed at the bottom of the fixing plate 41. A An observation mechanism for observing the deviation of the gun body 3, the observation mechanism includes a movable plate 43 attached to one side of the gun body 3 and an observation rod 45 fixed to one side of the movable plate 43, a spring 44 is connected between the movable plate 43 and the positioning plate 42, the spring 44 is sleeved on the outside of the observation rod 45, a positioning mechanism for positioning the observation rod 45 is provided between the observation rod 45 and the positioning plate 42, the positioning mechanism includes a positioning sleeve fixed on one side of the positioning plate 42 and a limiting sleeve 46 sleeved on the outside of the observation rod 45, the limiting sleeve 46 is fixed to the positioning sleeve.

[0030] Through the above technical solution:

[0031] When the gun body 3 moves up and down, the contact between the gun body 3 and the roller 49 causes the roller 49 to rotate in the groove. The rotation of the roller 49 makes the gun body 3 move up and down more smoothly and does not easily get stuck. When the gun body 3 deviates during the process of taking liquid, the deviation of the gun body 3 causes it to come into conflict with the movable plate 43. The conflict between the gun body 3 and the movable plate 43 causes the movable plate 43 to drive the observation rod 45 to move. The movement of the observation rod 45 drives the contraction of the spring 44, so that the observation rod 45 moves to a fixed position. The side of the positioning plate 42 allows the user to clearly observe the size of the deviation of the gun body 3, and then push the observation rod 45 to reset the gun body 3. At the same time, through the arrangement of the roller 49 and the observation rod 45, the gun body 3 can be stabilized during operation, and it is not easy to shake or deviate, avoiding the need for the user to support the gun body 3 during operation, reducing the user's hand fatigue and pressure as well as the occurrence of unnecessary accidents, increasing the accuracy and consistency of the device in liquid transfer, improving the safety of pipetting operations, and facilitating experiments.

[0032] In addition, refer to Figure 5 As shown, a separation mechanism 5 for separating the clamping seat 48 from the gun body 3 is provided between the mounting block 47 and the connecting plate, the separation mechanism 5 includes an open groove provided on one side of the connecting plate and a bidirectional screw 52 rotatably connected to the inside of the open groove, two moving blocks 51 are installed inside the open groove, the moving block 51 is fixed to the mounting block 47, and the moving block 51 is screwed to the outside of the bidirectional screw 52, ​​a limiting mechanism for limiting the moving block 51 is provided between the moving block 51 and the open groove, the limiting mechanism includes a slide groove 54 provided at the upper and lower ends of the open groove and a slider 53 fixed at the upper and lower ends of the moving block 51, and the two sliders 53 cooperate with the two slide grooves 54.

[0033] Through the above technical solution:

[0034] When in use, the bidirectional screw 52 is rotated to drive the moving block 51 to move on its outer wall, and the movement of the moving block 51 drives the synchronous movement of the mounting block 47, and the movement of the mounting block 47 drives the clamping seat 48 to move, and the movement of the clamping seat 48 drives the roller 49 to start moving, so that the roller 49 is separated from the gun body 3. Through the separation of the roller 49 from the gun body 3, the clamping seat 48 and the gun body 3 can be quickly separated, which can facilitate the cleaning and disinfection of the gun body 3, ensure hygiene and no cross contamination during operation, and facilitate the maintenance and repair of the gun body 3, thereby extending the service life of the gun body 3.

[0035] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A laboratory pipette, characterized in that include: A base (1), a top plate (2) is installed on the top of the base (1), a gun body (3) is arranged inside the top plate (2), a liquid extraction pipe (7) is installed at the bottom of the gun body (3), and a connecting plate is arranged between the base (1) and the top plate (2); The clamping mechanism (4) comprises a mounting block (47) mounted on one side of the connecting plate and a clamping seat (48) fixed on one side of the mounting block (47); a groove is provided inside the clamping seat (48); a roller (49) is rotatably connected inside the groove; the roller (49) is fitted with the gun body (3); and an anti-deviating mechanism is provided between the clamping seat (48) and the gun body (3) to prevent the gun body (3) from deviating.

2. The laboratory pipette according to claim 1, characterized in that: The anti-deviation mechanism comprises a fixing plate (41) fixed to one side of the clamping seat (48) and a positioning plate (42) installed at the bottom of the fixing plate (41); an observation mechanism for observing the deviation of the gun body (3) is provided between the positioning plate (42) and the gun body (3).

3. The laboratory pipette according to claim 2, characterized in that: The observation mechanism comprises a movable plate (43) attached to one side of the gun body (3) and an observation rod (45) fixed to one side of the movable plate (43); a spring (44) is connected between the movable plate (43) and the positioning plate (42); the spring (44) is sleeved on the outside of the observation rod (45); and a positioning mechanism for positioning the observation rod (45) is provided between the observation rod (45) and the positioning plate (42).

4. The laboratory pipette according to claim 3, characterized in that: The positioning mechanism comprises a positioning sleeve fixed on one side of the positioning plate (42) and a limiting sleeve (46) sleeved on the outside of the observation rod (45), and the limiting sleeve (46) is fixed to the positioning sleeve.

5. The laboratory pipette according to claim 1, characterized in that: A separation mechanism (5) for separating the clamping seat (48) from the gun body (3) is provided between the mounting block (47) and the connecting plate, the separation mechanism (5) comprising an open groove provided on one side of the connecting plate and a bidirectional screw (52) rotatably connected to the inside of the open groove, two moving blocks (51) are installed inside the open groove, the moving blocks (51) are fixed to the mounting block (47), and the moving blocks (51) are screwed to the outside of the bidirectional screw (52), and a limiting mechanism for limiting the moving blocks (51) is provided between the moving blocks (51) and the open groove.

6. The laboratory pipette according to claim 5, characterized in that: The limiting mechanism comprises sliding grooves (54) provided at the upper and lower ends of the opening groove and sliding blocks (53) fixed at the upper and lower ends of the moving block (51), and the two sliding blocks (53) cooperate with the two sliding grooves (54).

7. The laboratory pipette according to claim 1, characterized in that: A liquid storage box (6) is installed at the top of the base (1), and the liquid storage box (6) corresponds to the liquid extraction pipe (7).

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