CN218945107U

CN218945107U - Pipette for intelligent detection of food and medicine

Info

Publication number: CN218945107U
Application number: CN202222320207.XU
Authority: CN
Inventors: 贾梦伟; 田雨; 殷诚; 刘迪; 赵帅
Original assignee: Wuxi Ruchuang Technology Co ltd
Current assignee: Wuxi Ruchuang Technology Co ltd
Priority date: 2022-09-01
Filing date: 2022-09-01
Publication date: 2023-05-02
Anticipated expiration: 2032-09-01

Abstract

The utility model discloses a pipette for intelligent detection of food and medicines, which relates to the technical field of intelligent detection and comprises a tube body, wherein an expanding part is arranged in the middle of the tube body, scale marks are arranged on the outer surface of the tube body above the expanding part, a sharp mouth is arranged at the lower end of the tube body, the number of the tube bodies is at least two, the pipette also comprises a suction device, the suction device comprises a first tube body, a piston in sliding sealing connection with the first tube body is arranged in the first tube body, an air tap is arranged at one end of the first tube body, an opening is arranged at the other end of the first tube body, a piston rod is arranged at one surface of the piston facing the opening direction of the first tube body, a handle is arranged at the tail end of the piston rod, the top ends of the tube bodies are communicated with the air tap through connecting pipes, and a valve for opening and closing the tube body is arranged on the tube body. The intelligent detection pipette can solve the problems that the existing pipette for intelligent detection of food and medicines increases the workload of detection personnel, prolongs the detection time, needs an external ear washing ball as a suction device and is inconvenient to use.

Description

Pipette for intelligent detection of food and medicine

Technical Field

The utility model relates to the technical field of intelligent detection, in particular to a pipette for intelligent detection of food and medicines.

Background

The intelligent detection of food and medicine refers to the rapid qualitative and quantitative detection of food and medicine samples in an intelligent laboratory by utilizing a Surface Enhanced Raman Scattering (SERS) technology and adopting a Raman spectrum analyzer.

During the detection, a pipette is required to quantitatively discharge the liquid. A pipette is a measuring instrument that measures the volume of solution it emits. Which is an elongated glass tube with an enlarged portion in the middle. The lower end of the tube is sharp mouth-shaped, and an scale mark is carved on the neck of the upper end of the tube, which is a mark of the exact volume.

The existing pipette for intelligent detection of food and medicines has the following defects:

1. in the intelligent detection process of food and medicine, the same liquid is required to be sucked and discharged by using the pipette for multiple times, so that the workload of detection personnel is large, and meanwhile, the detection time is long.

2. Existing pipettes require the use of an ear-ball as an external suction device to aspirate liquid. In the process of using the ear washing ball, the ear washing ball is required to be abutted against the upper end pipe orifice of the pipette. When a detector sucks liquid, the earball is often not abutted tightly due to carelessness, so that the suction failure condition occurs. Meanwhile, the mouth of the pipette with smaller specification is smaller, the ear washing ball is not easy to insert, and the operation is inconvenient.

3. After the existing pipette is filled with liquid, a detector is required to remove the ear washing ball and quickly plug the pipe orifice at the upper end of the pipette with fingers, if the pipe orifice is not plugged with fingers in time after the ear washing ball is removed, the liquid flows out from the tip mouth at the lower end of the pipe body, and the pipetting fails; when quantitatively discharging liquid, a detector needs to slowly lift the finger, so that the liquid in the tube body slowly descends to the scale mark line of the upper end tube neck, and if the liquid is lifted too fast, the liquid can flow out from the tip mouth at the lower end of the tube body, and the liquid transferring fails. The existing pipettes are very inconvenient to operate.

Disclosure of Invention

The technical problem to be solved by the utility model is to provide a pipette for intelligent detection of food and medicines, which solves the problems that the existing pipette for intelligent detection of food and medicines increases the workload of detection personnel, prolongs the detection time, needs an external ear washing ball as a suction device and is inconvenient to use.

The technical scheme adopted for solving the technical problems is as follows: the utility model provides a pipette for food medicine wisdom detects, includes the body, the middle part of body sets up the expansion portion, and the body surface sets up the scale marking in the expansion portion top, the lower extreme of body sets up the cusp portion, the quantity of body is two at least, the pipette still includes suction device, suction device includes first barrel, set up rather than sliding seal's piston in the first barrel, the one end of first barrel sets up air cock, the open setting of the other end, the piston sets up the piston rod towards the one side of the open direction of first barrel, the terminal of piston rod sets up the handle, the top of a plurality of bodies is through connecting pipe and air cock intercommunication, set up the valve that is used for opening and close the body on the body.

Further, the number of the tube bodies is three.

Further, the projections of the plurality of pipe bodies on the horizontal plane are arranged in a straight shape or in a polygonal shape.

Further, the connecting pipe is a hard pipe made of glass, and the distance between two adjacent pipe bodies is more than three centimeters.

Further, the connecting pipe is a hose made of fluororubber.

Further, a layer of sealing ring made of fluororubber is arranged on the periphery of the piston and is in sliding sealing connection with the inner wall of the first cylinder body through the sealing ring.

Further, the valve comprises a second cylinder body which is vertically communicated with the pipe body, a cock which is in rotary sealing connection with the second cylinder body is arranged in the second cylinder body, and a radial runner is arranged on the cock at a position corresponding to the pipe body.

Further, the cock is made of polytetrafluoroethylene.

Further, the outer surface of the cock is a friction surface with a micro-nano structure.

The utility model has the following beneficial effects:

the pipette is provided with a plurality of tube bodies, the tube bodies share a suction device, and a valve for opening and closing the tube bodies is arranged on the tube bodies. In the intelligent detection process of food and medicine, when the same liquid is required to be sucked and discharged for many times, a detection person places the liquid into a beaker, a valve is opened, a suction device is used for sucking the liquid simultaneously by a plurality of tube bodies, after the liquid level in the tube bodies is higher than a scale mark line, the detection person continues to pull the piston upwards to enable the piston to be positioned at a position on the upper part of the first tube body, which is about to be separated from the first tube body (at the moment, the piston still plays a sealing role), the detection person keeps a smaller opening (about 1/6-1/5 opening) of the valve, continues to pull the piston upwards to enable the piston to be separated from the first tube body (when the valve is completely closed, the piston needs to be pulled to overcome the atmospheric pressure to do work, and at the moment, the piston still can be moved for a distance by pulling the piston by force), after the piston is separated from the first tube body, the detection person completely closes the valve, and the valve is not required to be rapidly closed after the piston is separated from the first tube body, because the valve is kept at the smaller opening. The liquid suction is completed.

When the liquid is discharged, the bottom end of the corresponding pipe body is aligned with the waste liquid cylinder, the valve corresponding to the pipe body is opened, the smaller opening (about 1/6-1/5 opening) is reserved, the liquid level in the pipe body slowly descends to the scale mark line, then the valve is closed, the bottom end of the pipe body is aligned with the target discharging container, and the valve is fully opened to finish the liquid discharge. The corresponding valve is operated by the detection personnel to enable the corresponding pipe bodies to be drained independently, and the drainage of the pipe bodies is not affected mutually.

The pipette can absorb liquid of a plurality of tube bodies at one time, reduces the workload of detection personnel and shortens the detection time.

The pipette is provided with the suction device which consists of the first cylinder body, the piston and the like, does not need to be externally connected with the suction device, does not cause suction failure, and is convenient to operate.

According to the pipette disclosed by the utility model, the opening degree of the piston is adjusted, so that the liquid level can be slowly lowered, a detector is not required to quickly react in the sucking and discharging processes, the pipetting failure is avoided, and the operation is very convenient.

Drawings

FIG. 1 is a front view of the present utility model;

FIG. 2 is a schematic diagram showing the valve in a fully open state;

fig. 3 is a schematic diagram of the valve in a fully closed state.

Detailed Description

Example 1:

as shown in fig. 1-3, a pipette for intelligent detection of food and medicine comprises a tube body 1, the middle part of tube body 1 sets up the expansion portion 11, and tube body 1 surface sets up scale marking 12 in expansion portion 11 top, the lower extreme of tube body 1 sets up sharp mouth 13, the quantity of tube body 1 is two at least, the pipette still includes suction device 2, suction device 2 includes first barrel 21, set up rather than sliding seal's piston 22 in the first barrel 21, the one end of first barrel 21 sets up air cock 23, the open setting of the other end, the one side that piston 22 towards the open direction of first barrel 21 sets up piston rod 24, the end of piston rod 24 sets up handle 25, and the top of a plurality of tube bodies 1 is through connecting pipe 3 and air cock 23 intercommunication, set up the valve 4 that is used for opening and close tube body 1 on the tube body 1.

The number of the pipe bodies 1 is three.

The number of tubes 1 may also be two, four or some other suitable number.

The projections of the plurality of tube bodies 1 on the horizontal plane are arranged in a straight shape or in a polygonal shape.

When the number of the pipe bodies is not more than three, the pipe bodies are generally arranged in a straight line shape; when the number of the pipe bodies exceeds three, polygonal arrangement is generally selected.

The connecting pipe 3 is a hard pipe made of glass, and the distance between two adjacent pipe bodies 1 is more than three centimeters.

The distance between the adjacent pipe bodies 1 is more than three centimeters, so that interference is avoided during liquid discharge.

The periphery of the piston 22 is provided with a layer of sealing ring made of fluororubber material and is in sliding sealing connection with the inner wall of the first cylinder 21 through the sealing ring.

The fluororubber material is acid-base resistant and corrosion resistant, and has good sealing performance.

The valve 4 comprises a second cylinder 41 vertically communicated with the pipe body 1, a cock 42 in rotary sealing connection with the second cylinder 41 is arranged in the second cylinder 41, and a radial runner 421 is arranged on the cock 42 at a position corresponding to the pipe body 1.

Referring to fig. 2 and 3, when the flow path 421 is in a vertical state, the valve 4 is completely opened; when the flow path 421 is in a horizontal state, the valve 4 is completely closed. The opening of the valve can be adjusted during the rotation of the flow passage 421 from the vertical state to the horizontal state.

The cock 42 is made of polytetrafluoroethylene.

The polytetrafluoroethylene material can resist acid and alkali and corrosion, so that gas formed by liquid evaporation in the pipe body is prevented from corroding the cock, and the phenomenon that a detector carelessly makes the liquid contact with the cock to corrode the cock when the pipe body is rinsed can also be avoided.

The outer surface of the cock 42 is a friction surface of a micro-nano structure.

The friction surface of the micro-nano structure can ensure the rotary sealing connection of the cock 42 and the second cylinder 41.

Example 2:

in example 1, the connection pipe 3 was replaced with a hose made of fluororubber by a hard pipe made of glass.

After the hard tube is replaced by the hose, a detector can adjust the position and the relative distance of each tube body during operation, so that the operation is convenient.

The fluororubber material has the characteristics of acid-base resistance and corrosion resistance.

The above description is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model in any way, and any person skilled in the art will not depart from the scope of the present utility model. In the following description, reference is made to the accompanying drawings, which form a part hereof, and in which is shown by way of illustration, specific embodiments in which the utility model may be practiced, and in which the utility model may be practiced.

Claims

1. The utility model provides a pipette for food medicine wisdom detects, includes body (1), the middle part of body (1) sets up expansion portion (11), and body (1) surface sets up scale marking (12) in expansion portion (11) top, the lower extreme of body (1) sets up sharp mouth (13), its characterized in that, the quantity of body (1) is two at least, the pipette still includes suction device (2), suction device (2) include first barrel (21), set up piston (22) rather than sliding seal connection in first barrel (21), the one end of first barrel (21) sets up air cock (23), the open setting of the other end, the one side of piston (22) orientation first barrel (21) open direction sets up piston rod (24), the end of piston rod (24) sets up handle (25), the top of a plurality of bodies (1) is through connecting pipe (3) and air cock (23) intercommunication, set up valve (4) that are used for opening and close body (1) on body (1).

2. Pipette for intelligent detection of food and pharmaceutical products according to claim 1, characterized in that the number of tubes (1) is three.

3. Pipette for intelligent detection of food and pharmaceutical products according to claim 1, characterized in that the projections of the plurality of tubes (1) on the horizontal plane are arranged in a line or in a polygonal shape.

4. A pipette for intelligent detection of food and medicine according to claim 1, characterized in that the connecting tube (3) is a hard tube made of glass, and the distance between two adjacent tube bodies (1) is more than three cm.

5. Pipette for intelligent detection of food and medicine according to claim 1, characterized in that the connecting tube (3) is a hose of fluororubber material.

6. A pipette for intelligent detection of food and medicine according to claim 1, characterized in that the periphery of the piston (22) is provided with a layer of sealing ring made of fluororubber material and is in sliding sealing connection with the inner wall of the first cylinder (21) through the sealing ring.

7. A pipette for intelligent detection of food and medicine according to claim 1, characterized in that the valve (4) comprises a second cylinder (41) vertically communicated with the pipe body (1), a cock (42) in rotary sealing connection with the second cylinder (41) is arranged in the second cylinder (41), and a radial runner (421) is arranged on the cock (42) at a position corresponding to the pipe body (1).

8. A pipette for intelligent detection of food and pharmaceutical products according to claim 7, characterized in that said tap (42) is of polytetrafluoroethylene material.

9. A pipette for intelligent detection of food and pharmaceutical products according to claim 7, characterized in that the outer surface of the tap (42) is a friction surface of micro-nano structure.