Pipette and pipette holder

Abstract

The utility model provides a pipette and a pipette holder, relates to the field of pipettes, and adopts the technical scheme that the pipette comprises a pipette body and a suction head, the upper part of the suction head is provided with a mounting plate and a light source, the circumferential surface of the mounting plate is oppositely provided with a limiting end lug and a dismounting end lug, the limiting end lug is horizontally provided with a limiting hole, and the dismounting end lug is provided with a mounting hole. A locking assembly is arranged on the disassembly and assembly end lug and can apply acting force towards the limiting column to the light source, the light source is of an annular structure, the limiting column is arranged on the outer circumferential face of the light source and can stretch into the limiting hole, and the limiting column is arranged on the outer circumferential face of the light source. The light source and the mounting plate are coaxially arranged, and the light source can move in the radial direction of the suction head. According to the utility model, illumination can be compensated, so that a tester can clearly observe the liquid level condition of the suction head.

Description

Technical Field

[0001] The utility model relates to the field of liquid transfer guns, in particular to a liquid transfer gun and a liquid transfer gun placement rack. Background Art

[0002] The pipette, also known as a pipette, is a precision instrument commonly used in laboratories, mainly used for the transfer of small or trace amounts of liquid. The pipette is mainly composed of a display window, a capacity adjustment component, a piston, an O-ring, a suction tube, and a pipette tip. Its working principle: Based on Hooke's law, the volume of the liquid in the pipette is proportional to the spring force in the pipette; before pipetting, the pipette tip needs to be assembled, that is, the nozzle cone of the gun body is aligned with the pipette tip, and lightly press vertically downward to tighten it.

[0003] When using a pipette to absorb reagents, you are required to release your thumb slowly and steadily, and never release it suddenly to prevent the solution from being sucked in too quickly and bubbles from forming in the reagent in the tip. The presence of bubbles will cause the liquid collection value set by the pipette to be inconsistent with the actual volume of the liquid, which will cause changes in parameters such as the concentration of the reagent and the reaction rate, thereby affecting the accuracy and reliability of the experimental results. Observing whether there are bubbles in the tip after taking the liquid is an essential step for experiments that require precise measurement. When bubbles are observed, the reagent needs to be discharged and re-absorbed. At the same time, due to the gun body, insufficient reagent absorption or empty absorption may also occur, and the experimenter is also required to observe the liquid level in the tip.

[0004] When the ambient light is insufficient and the color of the reagent is close to the color of the pipette tip, it is difficult for the test personnel to keenly observe whether there are bubbles on the liquid surface of the pipette tip and the position of the liquid surface, resulting in errors in the test results. Utility Model Content

[0005] In order to solve the technical problem in the above-mentioned prior art that insufficient light makes it difficult for experimenters to keenly observe the liquid level of the pipette tip, the utility model provides a pipette and a pipette placement rack that can compensate for light so that experimenters can keenly observe the liquid level of the pipette tip.

[0006] In the first aspect, in order to solve the above-mentioned technical problems, the utility model provides a pipette gun, comprising a gun body and a suction tip, wherein a mounting plate and a light source are arranged on the upper part of the suction tip, and a limiting end ear and a disassembly end ear are relatively arranged on the circumferential surface of the mounting plate, a limiting hole is horizontally arranged on the limiting end ear, and a locking assembly is arranged on the disassembly end ear. The light source is an annular structure, and a limiting column is arranged on the outer circumferential surface of the light source. The locking assembly can apply a force to the light source toward the limiting column, and the limiting column can extend into the limiting hole. The light source is coaxially arranged with the mounting plate and can move along the radial direction of the suction tip.

[0007] The utility model can compensate for illumination in weak light conditions by installing a detachable light source on the upper part of the suction head, so that the test personnel can keenly observe the liquid level of the suction head and avoid a low reagent liquid level or the presence of bubbles after suction.

[0008] Furthermore, the locking assembly includes a locking shaft, which can be horizontally movably arranged on the disassembly and assembly end ear, and the locking end of the locking shaft can extend into the locking hole on the outer circumference of the light source and abut against the bottom of the hole. The locking end sleeve of the locking shaft is provided with a spring, one end of the spring is connected to the locking end of the locking shaft, and the other end of the spring is connected to the disassembly and assembly end ear.

[0009] The utility model realizes locking or releasing of the light source through the cooperation of the lock shaft and the spring, has a simple structure, is easy to operate, and has a locking effect with high reliability.

[0010] Furthermore, a limiting head is provided at the locking end of the lock shaft, and the spring is connected to the limiting head.

[0011] Furthermore, a control cylinder is coaxially arranged at the end of the lock shaft extending out of the disassembly end ear, and the control cylinder can abut against the disassembly end ear.

[0012] The utility model provides an operating cylinder, which, on the one hand, facilitates the application of force to the lock shaft for easy operation, and on the other hand, can keep the spring in a compressed state to improve the locking effect.

[0013] Furthermore, the light source includes lamp beads, and the lamp beads are evenly arranged on the lower end surface of the light source and surround the suction head.

[0014] The utility model can ensure that the liquid surface has a uniform and strong lighting effect by evenly arranging the lamp beads on the lower end surface.

[0015] In the second aspect, the utility model also provides a pipette placement rack for placing the above-mentioned pipette, including a placement plate, a limiting assembly is arranged on the placement plate, the limiting assembly includes a limiting seat and a limiting buckle, a placement groove is arranged on the limiting seat, the limiting buckle is an arc-shaped structure, the connecting end of the limiting buckle is hinged to the limiting seat, the locking end of the limiting buckle is detachably connected to the limiting seat, and after connection, the limiting buckle is opposite to the placement groove.

[0016] The utility model arranges a limiting seat and a limiting buckle to cooperate with each other, instead of placing the gun body in a hanging manner, so as to enhance the limiting effect on the gun body and prevent the gun body from falling and being damaged under the action of external force.

[0017] Furthermore, at least three grooves are circumferentially arranged on the outer circumferential surface of the locking end of the limit buckle, and a locking groove is arranged on the limit seat on one side of the placement groove. The locking end of the limit buckle can extend into the locking groove, and a clamping block is swingably arranged in the locking groove through a pin shaft, and the clamping end of the clamping block can be clamped with the clamping groove, and the operating end of the clamping block can extend out of the limit seat, and a torsion spring is sleeved on the pin shaft, and the support legs of the torsion spring are respectively supported on the inner wall of the clamping block and the outer wall of the limit seat.

[0018] The utility model can adjust the locking position of the limit buckle by arranging the clamping block, the clamping groove and the torsion spring, adapts to gun bodies of various diameters, and ensures the limit effect on various gun bodies.

[0019] Furthermore, the inner walls of the two side plates of the placement plate are both provided with ultraviolet disinfection components.

[0020] The utility model can disinfect the gun body after use by arranging the ultraviolet disinfection component, replacing manual cleaning.

[0021] Furthermore, the placement plate is connected to a support seat.

[0022] It can be seen from the above technical solutions that the utility model has the following advantages:

[0023] The utility model provides a liquid transfer gun and a liquid transfer gun placement rack. By installing a detachable light source on the upper part of the suction head, the light can be compensated in the case of weak light, so that the test personnel can keenly observe the liquid level of the suction head to avoid the low reagent liquid level or the existence of bubbles after the suction; the light source is locked or released by the cooperation of the lock shaft and the spring, the structure is simple, the operation is convenient, and the locking effect has high reliability; by arranging the operating cylinder, on the one hand, it is convenient to apply force to the lock shaft for easy operation, and on the other hand, the spring can be kept in a compressed state to improve the locking effect; by evenly arranging the lamp beads on the lower end surface, it can be ensured that the liquid surface has a uniform and strong lighting effect; by arranging the limit seat and the limit buckle to cooperate, instead of placing the gun body in a suspended manner, the limit effect on the gun body can be enhanced to prevent it from falling and causing damage under the action of external force; by arranging the clamping block, the clamping groove and the torsion spring, the locking position of the limit buckle can be adjusted to adapt to gun bodies of various diameters and ensure the limit effect on various gun bodies; by arranging the ultraviolet disinfection component, the gun body after use can be disinfected to replace manual cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solution of the utility model, the drawings required for use in the description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 It is an exploded view of the suction head, light source and mounting plate in a specific implementation manner of the utility model.

[0026] Figure 2 It is a schematic diagram of the structure of the limit assembly in a specific implementation manner of the utility model.

[0027] Figure 3 It is a schematic diagram of the assembly structure of the gun body and the pipette gun placement rack in a specific implementation manner of the utility model.

[0028] In the figure, 1. suction head; 2. light source; 3. mounting plate; 4. disassembly and assembly end ear; 5. operating tube; 6. locking shaft; 7. spring; 8. limit column; 9. limit seat; 10. limit buckle; 11. slot; 12. torsion spring; 13. block; 14. pin; 15. gun body; 16. ultraviolet disinfection component; 17. side panel; 18. support seat; 19. placement plate. DETAILED DESCRIPTION

[0029] In order to make the purpose, features and advantages of the utility model more obvious and easy to understand, the technical scheme of the utility model will be clearly and completely described below in combination with the drawings in the specific embodiment. Obviously, the embodiments described below are only part of the embodiments of the utility model, not all of them. Based on the embodiments in this patent, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this patent.

[0030] like Figure 1 and Figure 3 As shown, this specific embodiment provides a pipette gun, including a gun body 15 and a suction tip 1, a mounting plate 3 and a light source 2 are arranged on the upper part of the suction tip 1, a limiting end ear and a disassembly end ear 4 are relatively arranged on the circumferential surface of the mounting plate 3, a limiting hole is horizontally arranged on the limiting end ear, and a locking assembly is arranged on the disassembly end ear 4, the light source 2 is annular, a limiting column 8 is arranged on the outer circumferential surface of the light source 2, the limiting column 8 can be extended into the limiting hole, the locking assembly can apply a force to the light source 2 toward the limiting column 8, the light source 2 is coaxially arranged with the mounting plate 3, and the inner diameter of the light source 2 is larger than the outer diameter of the suction tip 1, and can move along the radial direction of the suction tip 1.

[0031] This specific embodiment can compensate for illumination in weak light conditions by installing a detachable light source 2 on the upper part of the pipette tip 1, so that the experimenter can keenly observe the liquid level of the pipette tip 1 to avoid a low reagent level or bubbles after aspiration.

[0032] like Figure 1 As shown, since the suction head 1 is a disposable product, and the light source 2 can be reused, in order to facilitate the disassembly and assembly of the light source 2, the locking assembly includes a locking shaft 6, which can be horizontally movably arranged on the disassembly end ear 4, and the locking end of the locking shaft 6 can extend into the locking hole on the outer circumference of the light source 2 and abut against the bottom of the hole, and the locking end sleeve of the locking shaft 6 is provided with a spring 7, one end of the spring 7 is connected to the locking end of the locking shaft 6, and the other end of the spring 7 is connected to the disassembly end ear 4; under the action of the spring 7, the locking shaft 6 can make the limiting column 8 always located in the limiting end ear, so as to achieve The locking shaft 6 is limited in position, and the force acting on the light source 2 can be removed by pulling the locking shaft 6, and the light source 2 can be moved in the radial direction to release the limit. It can be seen that the operation is convenient. In the present specific embodiment, a limiting head is provided at the locking end of the locking shaft 6, and a spring 7 is connected to the limiting head. At the same time, an operating cylinder 5 is coaxially provided at the end of the locking shaft 6 extending out of the disassembly and assembly end ear 4, and the operating cylinder 5 can abut against the disassembly and assembly end ear 4. By providing the operating cylinder 5, on the one hand, it is convenient to apply force to the locking shaft 6 for easy operation, and on the other hand, it can keep the spring 7 in a compressed state to improve the locking effect.

[0033] In order to ensure that the light is evenly distributed around the suction head 1, the light source 2 includes lamp beads, which are evenly arranged on the lower end surface of the light source 2 and surround the suction head. The circle formed by the lamp beads is coaxial with the suction head.

[0034] In this specific embodiment, in order to further reduce costs, the mounting plate 3 is configured to be detachable. Specifically, the mounting plate 3 and the suction head 1 are matched with a small gap, and the inner wall of the mounting plate 3 is provided with a protrusion that enhances the friction, and the suction head 1 is a conical structure for easy disassembly and assembly; to prevent the mounting plate 3 from blocking light, the light source 2 is located at the lower part of the mounting plate 3, and the limiting end ear and the disassembly end ear 4 of the mounting plate 3 extend downward.

[0035] like Figure 2 and Figure 3As shown, this specific embodiment also provides a pipette placement rack for placing the above-mentioned pipette, including a placement plate 19, the placement plate 19 is connected to a support seat 18, a limiting component is arranged on the placement plate 19, the limiting component includes a limiting seat 9 and a limiting buckle 10, the limiting seat 9 is provided with a placement groove, the limiting buckle 10 is an arc-shaped structure, the connecting end of the limiting buckle 10 is hinged to the limiting seat 9 through an axis, the locking end of the limiting buckle 10 is detachably connected to the limiting seat 9, after connection, the limiting buckle 10 is opposite to the placement groove; by arranging the limiting seat 9 and the limiting buckle 10 to cooperate, instead of placing the gun body 15 in a suspended manner in the prior art, the limiting effect on the gun body 15 can be enhanced to prevent it from falling and causing damage due to external force.

[0036] Since there are many types of pipettes with different diameters, in order to ensure that the limit assembly is suitable for a variety of pipettes, such as Figure 2 As shown, in this specific embodiment, the outer circumferential surface of the locking end of the limit buckle 10 is circumferentially provided with at least three slots 11, and three are provided in this specific embodiment. A locking slot is provided on the limit seat 9 on one side of the placement slot, and the locking end of the limit buckle 10 can extend into the locking slot. A clamping block 13 is swingably provided in the locking slot through a pin shaft 14, and the clamping end of the clamping block 13 can be clamped with the slot 11, and the operating end of the clamping block 13 can extend out of the limit seat 9. A torsion spring 12 is sleeved on the pin shaft 14, and the support legs of the torsion spring 12 are respectively supported on the inner wall of the clamping block 13 and the outer wall of the limit seat 9; when in use, the gun body 15 is first placed on the limit seat 9, the clamping block 13 is pressed, and the limit buckle 10 is rotated until it fits with the surface of the box gun body 15, and then the clamping block 13 is released, and the clamping block 13 is clamped with the corresponding hole groove to achieve locking.

[0037] In the prior art, the gun body 15 may be contaminated by the reagent and needs to be manually sterilized. In order to save the manual sterilization, Figure 3 As shown, in this specific embodiment, the inner walls of the two side plates 17 of the placement plate 19 are both provided with ultraviolet disinfection components 16, and the gun body 15 to be disinfected is placed on the ultraviolet disinfection component 16 and turned on to perform disinfection.

[0038] From the above specific implementations, it can be seen that the utility model has the following beneficial effects:

[0039] 1. By installing a detachable light source 2 on the upper part of the pipette tip 1, it is possible to compensate for the illumination in a weak light condition, so that the test personnel can keenly observe the liquid level of the pipette tip 1 to avoid a low reagent level or bubbles after the pipette tip is sucked;

[0040] 2. The locking or releasing of the light source 2 is achieved by the cooperation of the lock shaft 6 and the spring 7. The structure is simple and easy to operate. The locking effect has high reliability. By setting the operating cylinder 5, on the one hand, it is convenient to apply force to the lock shaft 6 for easy operation. On the other hand, it can keep the spring 7 in a compressed state to improve the locking effect.

[0041] 3. By evenly arranging the lamp beads on the lower end surface, it can ensure that the liquid surface has a uniform and strong lighting effect;

[0042] 4. By arranging the limit seat 9 and the limit buckle 10 to cooperate with each other, instead of placing the gun body 15 in a suspended manner, the limit effect on the gun body 15 can be enhanced to prevent it from falling and causing damage under the action of external force;

[0043] 5. By setting the clamping block 13, the clamping slot 11 and the torsion spring 12, the locking position of the limit buckle 10 can be adjusted to adapt to gun bodies 15 of various diameters, thereby ensuring the limiting effect on various gun bodies 15;

[0044] 6. The ultraviolet disinfection assembly 16 can be provided to disinfect the gun body 15 after use, replacing manual cleaning.

[0045] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A pipette gun, comprising a gun body (15) and a pipette tip (1), characterized in that: The upper part of the suction head (1) is provided with a mounting plate (3) and a light source (2); a limit end ear and a disassembly end ear (4) are relatively provided on the circumferential surface of the mounting plate (3); a limit hole is horizontally provided on the limit end ear; a locking component is provided on the disassembly end ear (4); the light source (2) is an annular structure; a limit post (8) is provided on the outer circumferential surface of the light source (2); the locking component can apply a force to the light source (2) towards the limit post (8); the limit post (8) can extend into the limit hole; the light source (2) is coaxially arranged with the mounting plate (3) and can move along the radial direction of the suction head (1).

2. The pipette as claimed in claim 1, characterized in that: The locking assembly comprises a locking shaft (6), the locking shaft (6) being horizontally movably arranged on the disassembly end ear (4), the locking end of the locking shaft (6) being able to extend into a locking hole on the outer circumference of the light source (2) and abutting against the bottom of the hole, the locking end sleeve of the locking shaft (6) being provided with a spring (7), one end of the spring (7) being connected to the locking end of the locking shaft (6), and the other end of the spring (7) being connected to the disassembly end ear (4).

3. The pipette as claimed in claim 2, characterized in that: The locking end of the lock shaft (6) is provided with a limit head, and the spring (7) is connected to the limit head.

4. The pipette as claimed in claim 3, characterized in that: The end of the lock shaft (6) extending out of the disassembly end ear (4) is coaxially provided with a control cylinder (5), and the control cylinder (5) can abut against the disassembly end ear (4).

5. The liquid transfer gun according to any one of claims 1 to 4, characterized in that: The light source (2) comprises lamp beads, which are evenly arranged on the lower end surface of the light source (2) and surround the suction head (1).

6. A pipette placement rack, characterized in that: Used to place the pipette as described in claim 5, comprising a placement plate (19), a limiting assembly is arranged on the placement plate (19), the limiting assembly comprises a limiting seat (9) and a limiting buckle (10), the limiting seat (9) is provided with a placement groove, the limiting buckle (10) is an arc-shaped structure, the connecting end of the limiting buckle (10) is hinged to the limiting seat (9), the locking end of the limiting buckle (10) is detachably connected to the limiting seat (9), and after connection, the limiting buckle (10) is opposite to the placement groove.

7. The pipette placement stand according to claim 6, characterized in that: At least three slots (11) are circumferentially arranged on the outer circumferential surface of the locking end of the limit buckle (10); a locking slot is arranged on the limit seat (9) at one side of the placement slot; the locking end of the limit buckle (10) can be inserted into the locking slot; a clamping block (13) is swingably arranged in the locking slot via a pin shaft (14); the clamping end of the clamping block (13) can be clamped with the slot (11); the operating end of the clamping block (13) can extend out of the limit seat (9); a torsion spring (12) is sleeved on the pin shaft (14); the legs of the torsion spring (12) are respectively supported on the inner wall of the clamping block (13) and the outer wall of the limit seat (9).

8. The pipette placement stand according to claim 7, characterized in that: The inner walls of the two side plates (17) of the placement plate (19) are both provided with ultraviolet disinfection components (16).

9. The pipette placement stand according to claim 8, characterized in that: The placement plate (19) is connected to a support seat (18).

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