CN207769824U - A kind of liquid relief and dropping liquid integral type experimental provision - Google Patents

Abstract

The utility model discloses an integrated experimental device for pipetting liquid and dripping liquid, which comprises a transparent cylindrical tube with an open end. The cylindrical tube is respectively connected with a first guide vane and a second guide vane along the inner wall from the open end. The side of the first baffle away from the second baffle is connected with a first push rod, the side of the second baffle away from the first baffle is connected with a second push rod, and the second push rod passes through the other end of the cylinder Extending to the outside of the cylinder, the other end of the cylinder is externally connected to the suction pipe and communicated with the suction pipe; the first deflector is provided with multiple first holes at equal angles, and the second deflector is provided with multiple second holes at equal angles. Pore channel; it can realize the quantitative transfer and constant-speed dripping of liquid; it also has the advantages of simple structure, good sealing, simple operation, good accuracy and good flexibility.

Description

An integrated experimental device for pipetting and dripping

technical field

The utility model relates to the technical field of experimental equipment, in particular to an integrated experimental device for pipetting and dropping liquid.

Background technique

The pipette is a measuring device used to accurately pipette a certain volume of solution. The existing pipette needs to cooperate with the suction ear ball to complete the measuring operation. The uncertainty of human control is large, and sometimes it is necessary to measure multiple times to achieve the desired effect. The dropping funnel is a conventional instrument for synthetic experiments, most of which are used in organic synthesis experiments. When using the dropping funnel, the liquid in the funnel can flow out evenly, and the reaction rate can also be controlled by controlling the rate of the dropping liquid. Due to the current The tee port with the funnel is an open structure with the outside world. When dripping liquid, the connection between the piston and the tee port will leak out due to the loose connection, resulting in inaccurate dripping amount of the solution and poor experimental results. The dropping liquid is usually transferred into the dropping funnel through other measuring liquid containers, and its operation is cumbersome, and in the process of pipetting, there is also a certain loss to the liquid. Pipettes and dropping funnels are only suitable for measuring and dropping, respectively, so their usage is relatively limited.

Utility model content

The purpose of the utility model is to provide an experimental device integrating liquid pipetting and liquid dripping, which can realize quantitative transfer and constant-speed dripping of liquid during the liquid pipetting process.

The technical scheme adopted by the utility model is, an integrated experimental device for pipetting and dripping, comprising a transparent cylindrical tube with one end open, the cylindrical tube is respectively connected with a first deflector, a second guide plate and a second guide plate along the inner wall from the open end to the inside. Two deflectors, the first deflector is connected to the first push rod on the side away from the second deflector, the first push rod extends from the opening of the cylinder to the outside of the cylinder, the second deflector is far away from the first deflector One side of the sheet is connected with a second push rod, and the second push rod extends through the other end of the cylinder to the outside of the cylinder, and the other end of the cylinder is connected to the suction pipe; the first deflector is provided with multiple first channels at equal angles , a plurality of second holes are opened at equal angles on the second deflector.

The utility model is also characterized in that:

The outer wall of the cylinder is provided with graduation marks.

The outer eaves of the first deflector and the second deflector are both sleeved with soft rubber shells, and each soft rubber shell is attached to the inner wall of the cylinder.

The second push rod is connected with a plug at the outer end of the cylinder.

There are at least three first holes and second holes.

The beneficial effect of the utility model is that the utility model is an integrated experimental device for pipetting and dripping, which can realize the quantitative transfer and dripping of liquid; it also has the advantages of simple structure, good sealing performance, simple operation, accuracy and flexibility. good sex.

Description of drawings

Fig. 1 is a schematic structural view of a pipetting and dripping integrated experimental device of the present invention.

In the figure, 1. Cylindrical cylinder, 2. The first deflector, 3. The second deflector, 4. The first push rod, 5. The second push rod, 6. The first hole, 7. Scale line, 8 . Second channel, 9. Suction tube, 10. Plug, 11. Soft rubber shell.

Detailed ways

The utility model will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

The utility model is an integrated experimental device for pipetting and dripping, as shown in Figure 1, comprising a transparent cylindrical tube 1 with one end open, and the cylindrical tube 1 is respectively connected with first guide vanes 2 along the inner wall from the open end. , the second deflector 3, the first deflector 2 is connected with the first push rod 4 on the side away from the second deflector 3, the first push rod 4 extends from the opening of the cylinder 1 to the outside of the cylinder 1, the second A second push rod 5 is connected to the side of the second deflector 3 away from the first deflector 2, and the second push rod 5 passes through the other end of the cylinder 1 and extends to the outside of the cylinder 1, and the other end of the cylinder 1 is connected with a suction The liquid pipe 9 ; the first deflector 2 is equiangularly opened with a plurality of first holes 6 , and the second deflector 3 is equiangularly opened with a plurality of second holes 8 .

The outer wall of the cylinder 1 is provided with a scale line 7, which can quantitatively measure the liquid.

The outer eaves of the first deflector 2 and the second deflector 3 are sleeved with soft rubber shells 11, and each soft rubber shell 11 fits with the inner wall of the cylindrical tube 1, so that the first deflector can be used during use. 2. The sealing performance between the second deflector 3 and the cylinder 1 is better.

The second push rod 5 is connected with a plug 10 at the outer end of the cylinder 1, which facilitates the pushing of the second push rod 5 and can also prevent the second push rod 5 from entering the cylinder 1.

There are at least three first holes 6 and second holes 8, which are convenient for controlling the dripping speed when dripping.

The usage method of a pipetting and dripping integrated experimental device of the utility model is as follows:

When in use, push the first push rod 4 to push the first deflector 2 and the second deflector 3 to the end of the cylinder 1 close to the suction pipe 9; rotate the first push rod 4, the first push rod 4 At the same time, the first guide vane 2 is driven, so that the first channel 6 on the first guide vane 2 is completely staggered from the second channel 8 on the second guide vane 3; In the liquid, push the second push rod 5 to the open end of the cylinder 1, then the liquid will be sucked into the cylinder 1, and at the same time judge the amount of the dripping liquid that needs to be measured by the scale line 7; At the mouth of the experimental container, turn the first push rod 4 to adjust the overlapping area of the first channel 6 and the second channel 8, so as to realize constant-velocity dripping of the liquid.

Another method of using the liquid transfer and dripping integrated experimental device of the utility model is as follows:

Pushing the first push rod 4 will push the first deflector 2 and the second deflector 3 to the end of the cylinder 1 close to the suction pipe 9; turn the first push rod 4, and the first push rod 4 will simultaneously drive the second A deflector 2, the first channel 6 on the first guide 2 is completely staggered with the second channel 8 on the second guide 3; the suction pipe 9 is inserted into the liquid to be transferred, and the The second push rod 5 is pushed toward the open end of the cylindrical barrel 1, then the liquid is sucked in the cylindrical barrel 1, and the amount of the dripping liquid to be measured is judged by the scale line 7 at the same time; the experimental device is moved to the mouth of the experimental container where the solution needs to be added, The first push rod 4 is pushed toward the end of the cylinder 1 close to the pipette 9, so as to realize the quantitative transfer of the liquid.

Through the above method, the utility model is an integrated experimental device for pipetting and dripping, which can realize quantitative transfer and constant-speed dripping of liquid; it also has the advantages of simple structure, good sealing performance, simple operation, high accuracy and good flexibility. The advantages.

Claims (5)

1. An integrated experimental device for pipetting and dripping, characterized in that it comprises a transparent cylinder (1) with an open end, and the cylinder (1) is respectively connected with a first guide tube from the open end inwardly along the inner wall. flow sheet (2), second flow guide sheet (3), the first push rod (4) is connected to the side of the first flow guide sheet (2) away from the second flow guide sheet (3), the first The push rod (4) extends from the opening of the cylinder (1) to the outside of the cylinder (1), and the second deflector (3) is connected to a second push rod (5) on the side away from the first deflector (2). ), the second push rod (5) extends to the outside of the cylinder (1) through the other end of the cylinder (1), and the other end of the cylinder (1) is connected with a suction pipe (9); The first deflector (2) is provided with a plurality of first channels (6) at equal angles, and the second guide vane (3) is provided with a plurality of second channels (8) at equal angles. 2 . An integrated experimental device for pipetting and dripping according to claim 1 , characterized in that, the outer wall of the cylinder ( 1 ) is provided with a scale line ( 7 ). 3. A kind of pipetting and dripping integrated experimental device as claimed in claim 1, characterized in that, the outer eaves of the first deflector (2) and the second deflector (3) are all socketed with Soft rubber shells (11), each of the soft rubber shells (11) is attached to the inner wall of the cylinder (1). 4 . An integrated experimental device for pipetting and dripping according to claim 1 , characterized in that, the second push rod ( 5 ) is connected with a plug ( 10 ) at the outer end of the cylinder ( 1 ). 5 . The integrated experimental device for pipetting and dripping according to claim 1 , wherein there are at least three first channels ( 6 ) and second channels ( 8 ).