CN210279196U - Slide rail formula liquid-transfering gun equipment - Google Patents
Slide rail formula liquid-transfering gun equipment Download PDFInfo
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- CN210279196U CN210279196U CN201920591171.4U CN201920591171U CN210279196U CN 210279196 U CN210279196 U CN 210279196U CN 201920591171 U CN201920591171 U CN 201920591171U CN 210279196 U CN210279196 U CN 210279196U
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- liquid
- slide rail
- pipette
- transfering gun
- operating button
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Abstract
The utility model discloses a slide rail formula liquid-transfering gun equipment, to the problem that the control spring part is easy to age in the use of the liquid-transfering gun on the current market and causes the precision of liquid suction to be inaccurate, the instrument durability is poor, the liquid-transfering gun is reformed, a set of novel slide rail formula liquid-transfering gun is provided; the novel slide rail type pipette mainly comprises two parts, namely a structure for removing the abandoned pipette head and a structure for sucking liquid with fixed volume, wherein the structure for removing the abandoned pipette head is connected with the closed shell in a pin connection mode, and the structure for sucking the liquid with fixed volume is nested in the closed shell; the liquid part for sucking the fixed volume mainly comprises an operating button, a closed shell, a sliding rail with a groove, a rolling sliding block and a suction head with a capillary inside; the slide rail type liquid-transfering gun equipment has the advantages of low production cost, good operation effect, strong adjustability and easy operation.
Description
Technical Field
The patent of the utility model relates to a slide rail formula liquid-transfering gun equipment belongs to meticulous laboratory glassware field.
Background
The pipette is a common experimental instrument in biological laboratories and is mainly used for sucking up trace liquid. The liquid-transfering gun is mainly composed of an operating button, a suction head ejector, a handle, a display window, a suction head push-out ring pipe and a suction head cone. The volume of the liquid which can be sucked can be changed by changing the display scale by changing the volume of the gun by rotating the operation button. The sucking and releasing of the liquid is realized by pressing the operation button. The side surface is also provided with a sucker push-out device to control the movement of the sucker push-out ring pipe, and the used gun head is removed. Thereby realizing the use process of the whole pipette.
Currently, liquid-transfering guns in common use in the market are divided into gas piston type liquid-transfering guns and external piston type liquid-transfering guns according to the principle, and are gradually turned into automatic operation by manual operation. However, because of their high cost and temporary lack of popularity, the commercial use of gas piston type pipette is still manual. Inside the manual gas piston type pipetting gun there are a pipetting volume control section and a span correction section, both of which are controlled mainly by springs. There are many use cautions in the manual gas piston type pipette in the use, if need to resume maximum range after using, otherwise can make the spring be in the compression state for a long time, make the elastic coefficient of spring change, cause the spring to move liquid again when stretching out and drawing back and draw volume and presume not accord, cause the pipette precision to descend. And the spring elastic coefficient can also be changed due to the normal aging of the spring in the long-term use process, so that the precision of the liquid-transfering gun is reduced. The spring control part in the prior pipette system needs to be changed urgently, so that the accuracy of the pipette is not reduced due to improper use or aging of the spring.
Disclosure of Invention
The patent of the utility model provides a pair of slide rail formula liquid-transfering gun equipment easily causes to absorb liquid precision inaccurate to the liquid-transfering gun on the present market, and the poor problem of instrument durability reforms transform the liquid-transfering gun, provides a neotype slide rail formula liquid-transfering gun. Neotype slide rail formula pipetting gun mainly includes two parts, is being used for shifting out respectively abandons the structure of using the rifle head and is used for fixed volume liquid to absorb the structure, wherein removes to abandon the structure of using the rifle head and link to each other with airtight shell through the pin junction mode for fixed volume liquid absorbs that the structure nestification is inside airtight shell.
The portion for removing the disposable tip: a suction head ejector is used for controlling the suction head to push out the movement of the ring pipe, and the used gun head is removed. The suction head ejector is connected with the inside of the closed shell through a clamping groove, the clamping groove is divided into two positions, and a spring is arranged.
Aspirating a fixed volume liquid fraction: mainly comprises an operating button, a closed shell, a sliding rail with a groove, a rolling sliding block and a suction head with a capillary inside. The lower part of the operating button is connected with a thin rod, and a blocking piece is connected to the thin rod between the operating button and the closed shell. The thin rod at the lower part of the operating button is in a thread shape between the thin rod and the rolling sliding block in the internal structure of the closed shell, and the rolling sliding block and the thin rod can move up and down relatively by rotating the operating button. The distance between the rolling slide block and the blocking piece is the height inside the cylindrical cavity, and the length of the cavity is required to be the same as that of the capillary in the suction head. The distance between the rolling sliding block and the blocking piece can be changed by rotating the operating button, so that the internal volume of the cavity is changed, and the volume of the liquid to be sucked is changed. The sliding rail and the closed shell are integrally structured, an oil seal is filled between the rolling sliding block and the sliding rail, the distance between the rolling sliding block and the sliding rail is extremely small, namely the rolling sliding block and the sliding rail have basically the same size, and the lower part of the rolling sliding block is provided with a liquid transfer control rod which is integrally structured with the rolling sliding block. The suction head is connected with the shell in a clamping groove mode, and a capillary tube with the diameter of 0.48-0.6 mm and the length of 7-8 cm is arranged in the suction head. The rolling slide block is a semi-cylinder with the diameter of 1 cm-1.5 cm and the height of 1.5cm, and the slide rail is provided with a groove and the length of the slide rail is 5 cm-8 cm.
The using method comprises the following steps:
(1) the position of the thin rod in the slide rail is controlled by rotating the operating button, the volume of the liquid to be sucked is obtained in the volume display window,
(2) the pipette is held by the right hand, and the pipette head is accurately and tightly arranged at the nozzle of the pipette.
(3) Pressing an operating button till the separation blade is tightly connected with the sealing shell, and driving the rolling slide block to move by the button so as to enable the liquid transfer control rod to move, further enabling the inside of the capillary tube to form a vacuum environment, and enabling the tip of the pipette head to contact with the reagent and enter the position below the liquid level.
(4) The operating button is pulled to move the slide block to the top to suck the reagent.
(5) And moving the pipette gun after absorbing the reagent into a target container, and slowly pushing an operating button until a baffle is tightly connected with the sealing shell, so as to ensure that all liquid is extruded.
(6) And pressing a gun head removing button, knocking off the gun head, and putting the pipette gun back on the original rack.
(7) Rotating the operating button to another required liquid sucking volume and repeating the steps (2) to (6).
(8) And after the operation is finished, the liquid-transfering gun is put back to the designated position.
The utility model discloses a following beneficial effect mainly has:
the change of the control volume of the sliding rail and the rolling sliding block effectively replaces a spring control system in the existing system, and the problems of inaccurate precision and the like caused by improper operation and overlong use time are avoided. The capillary tube is used for replacing the original structure in the suction head, so that the precision is higher, and the backflow condition can be effectively prevented. The maximum range does not need to be adjusted back after the use is finished, and the experimental operation is simplified. The sliding rail type liquid-transfering gun set has the advantages of low production cost, good operation effect, strong adjustability and easy operation.
Drawings
FIG. 1 is an external view of a slide-rail pipette.
FIG. 1 shows a suction structure for a fixed volume of liquid
2 is a display window
3 is a structure for removing the waste lance tip
FIG. 2 is a perspective view of a slide rail pipette.
Fig. 3 is a cross-sectional view of the slide rail.
FIG. 4 is a view showing the internal structure of the suction head.
In figure 4, 4 is an operating button, 5 is a baffle plate, 6 is a rolling slide rail, 7 is a slide block, and 8 is a liquid-transferring control rod
The connection mode is as follows: the operating button lower extreme links to each other with moving liquid the control lever, and on the separation blade was fixed in the liquid-moving control lever between operating button and the seal shell, the liquid-moving control lever passed through the screw and linked to each other with the slider, and accessible rotary operation button made roll slider and slender axles relative movement from top to bottom. The sliding rail and the closed shell are integrally structured, an oil seal is filled between the rolling sliding block and the sliding rail, the distance between the rolling sliding block and the sliding rail is extremely small, namely the rolling sliding block and the sliding rail have basically the same size, and the lower part of the rolling sliding block is provided with a liquid transfer control rod which is integrally structured with the rolling sliding block.
FIG. 5 is a right side view of the interior of the suction head
Fig. 6 is a partially enlarged schematic view of the connection mode of the slide rail and the slide block in fig. 4.
The structure and connection mode in figure 6 are the same as those in figure 4.
Detailed Description
Example 1
1000ul, 500ul and 100ul of distilled water are respectively sucked into a beaker by a slide rail type pipette with the measuring range of 1000ul and a common pipette in the market with the measuring range of 1000ul, and are discarded after 3 times of sucking the distilled water, and then 1000ul, 500ul and 100ul of distilled water are respectively sucked for 5 times. The slide rail with the measuring range of 1000ul is characterized in that the capillary inside the pipette gun has the diameter of 0.6mm and the length of 7.5 cm. The rolling slide block is a semi-cylinder with the diameter of 1.5cm and the height of 1.5cm, and the length of the slide rail is 7 cm.
The operation method of the slide rail type liquid-transfering gun is as follows:
(1) the operating button is rotated to obtain the required volume of the liquid to be sucked up of 1000ul in the display window.
(2) The pipette is held by the right hand, and the pipette head is accurately and tightly arranged at the nozzle of the pipette.
(3) Pressing an operating button till the separation blade is tightly connected with the sealing shell, and driving the rolling slide block to move by the button so as to enable the liquid transfer control rod to move, further enabling the inside of the capillary tube to form a vacuum environment, and enabling the tip of the pipette head to contact with the reagent and enter the position below the liquid level.
(4) The operating button is pulled to move the slide block to the top to suck the reagent.
(5) And moving the pipette gun after absorbing the reagent into a target container, and slowly pushing an operating button until a baffle is tightly connected with the sealing shell, so as to ensure that all liquid is extruded.
(6) And pressing a gun head removing button, knocking off the gun head, and putting the pipette gun back on the original rack.
(7) And weighing the removed distilled water, and recording data.
(8) The operating button is rotated to obtain the required volume of 500ul of the liquid to be aspirated in the display window.
(9) And (4) repeating the steps (2) to (7).
(10) The operating button is rotated to obtain the required volume of liquid 100ul in the display window.
(11) And (4) repeating the steps (2) to (7).
The commercially available pipette gun operates as follows:
(1) the operating button is rotated to obtain the required volume of the liquid to be sucked up of 1000ul in the display window.
(2) The pipette is held by the right hand, and the pipette head is accurately and tightly arranged at the nozzle of the pipette.
(3) The thumb is used for pressing the pressing knob of the pipette gun to the first gear, half of the gun head is immersed into liquid to suck the liquid, the knob is forbidden to be pressed to the bottom, otherwise, the sucked liquid is incorrect in volume, and then the thumb is slightly released, so that the liquid is sucked out.
(4) And moving the pipette after sucking the reagent into a target container, slowly pressing an operation button to a first gear, and then to a second gear to ensure that all liquid is squeezed out.
(5) The gun head removal button is pressed to remove the gun head.
(6) The measuring range is adjusted to the maximum, the exceeding of the measuring range is forbidden, and the liquid-transferring gun is placed back on the original frame.
(7) And weighing the removed distilled water, and recording data.
(8) The operating button is rotated to obtain the required volume of 500ul of the liquid to be aspirated in the display window.
(9) And (4) repeating the steps (2) to (7).
(10) The operating button is rotated to obtain the required volume of liquid 100ul in the display window.
(11) And (4) repeating the steps (2) to (7).
Placing distilled water in an electronic balance, weighing, recording actual mass, obtaining data of a common liquid-transfering gun in the market as table I, obtaining data of a slide rail type liquid-transfering gun as table II, and obtaining the density of water at 24 ℃ of 0.9973g/cm according to the industrial standard JTJ054-94 of the people's republic of China3By calculating V1＝5000ul，m1＝4.9865g,V2＝1000ul，m2＝0.9973g，V3＝100ul，m30.09973 g. Accuracy a ═ m (m) according to the formula1-m2)/m2And 100, calculating the accuracy of each measuring range, wherein common liquid-transfering guns in the market are shown as a third meter, and sliding rail type liquid-transfering guns are shown as a fourth meter.
Meter-recording meter for measuring distilled water quality by common liquid-transfering gun precision in market
| Measuring range/ |
1/ |
2/ |
3/ |
4/ |
5/g | m1Average value/g |
| 5000ul | 5.0045 | 4.9748 | 4.9874 | 4.9942 | 5.0109 | 4.99436 |
| 1000ul | 0.9874 | 1.005 | 0.9878 | 0.9933 | 1.0070 | 0.9961 |
| 100ul | 0.0978 | 0.0981 | 0.1011 | 0.0991 | 0.0999 | 0.0992 |
Meter-two slide rail type distilled water quality measuring recorder for precision measurement of liquid-transfering gun
| Measuring range/ |
1/ |
2/ |
3/ |
4/ |
5/g | m1Average value/g |
| 5000ul | 4.9781 | 5.0001 | 4.9684 | 4.9846 | 4.9764 | 4.9817 |
| 1000ul | 0.9963 | 0.9883 | 1.0059 | 1.0043 | 0.9971 | 0.99838 |
| 100ul | 0.0981 | 0.0996 | 0.1009 | 0.1015 | 0.1012 | 0.10026 |
Data sorting table for common liquid-transfering gun in the third market
| Range \ experimental value | m1/g | m2/g | (m1-m2)/g | A/％ |
| 5000ul | 4.99436 | 4.9865 | 0.00786 | 0.158 |
| 1000ul | 0.9961 | 0.9973 | -0.0012 | -0.120 |
| 100ul | 0.0992 | 0.09973 | -0.00053 | -0.531 |
Data arrangement meter for four-slide rail type liquid-transfering gun
| Range \ experimental value | m1/g | m2/g | (m1-m2)/g | A/％ |
| 5000ul | 4.9817 | 4.9865 | -0.0048 | -0.096 |
| 1000ul | 0.99838 | 0.9973 | 0.00108 | 0.108 |
| 100ul | 0.10026 | 0.09973 | 0.00053 | 0.531 |
According to the requirements of laboratories, the accuracy ranges of the measuring ranges are 5000ul +/-0.6%, 1000ul +/-1% and 100ul +/-2%, the experimental results of the slide rail type liquid-transfering gun and the common liquid-transfering gun in the market are both in the accuracy range, and the accuracy of the slide rail type liquid-transfering gun is higher than that of the common liquid-transfering gun in the market.
It should be noted that the above-mentioned embodiments of the present invention and the technical principles applied thereto should be regarded as the protection scope of the present invention if the functional functions of the invention are not beyond the spirit of the description and the accompanying drawings.
Claims (7)
1. The slide rail type pipette device is characterized by consisting of a structure for removing a discarded pipette head and a structure for sucking liquid with a fixed volume, wherein the structure for removing the discarded pipette head is connected with a closed shell in a pin connection mode, and the structure for sucking the liquid with the fixed volume is nested in the closed shell.
2. The slide rail pipette apparatus of claim 1, wherein the means for removing the disposable tip comprises a tip ejector for controlling the movement of the tip ejector collar.
3. The slide rail type pipette device according to claim 1, wherein the fixed volume of liquid to be aspirated is mainly composed of an operating button, a pipette control pin, a closed housing, a slide rail with a groove, a rolling slider, and a tip with a capillary tube inside.
4. The slide rail type pipette instrument as claimed in claim 3, wherein the pipette control pin is provided under the operating button, and a stopper is attached to the pin between the operating button and the closed casing.
5. The slide rail type pipette device of claim 3, wherein the slide rail is integrally constructed with the hermetic case, and an oil seal is required to be filled between the rolling slider and the slide rail.
6. The slide rail pipette device of claim 3, wherein the tip has an internal capillary tube with a diameter of 0.48mm to 0.6mm and a length of 7cm to 8 cm.
7. The slide rail type pipette device of claim 3, wherein the rolling slide is a semi-cylinder with a diameter of 1cm to 1.5cm and a height of 1.5cm, and the slide rail has a groove with a length of 5cm to 8 cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920591171.4U CN210279196U (en) | 2019-04-28 | 2019-04-28 | Slide rail formula liquid-transfering gun equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920591171.4U CN210279196U (en) | 2019-04-28 | 2019-04-28 | Slide rail formula liquid-transfering gun equipment |
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| Publication Number | Publication Date |
|---|---|
| CN210279196U true CN210279196U (en) | 2020-04-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920591171.4U Expired - Fee Related CN210279196U (en) | 2019-04-28 | 2019-04-28 | Slide rail formula liquid-transfering gun equipment |
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|---|---|
| CN (1) | CN210279196U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111744567A (en) * | 2020-06-24 | 2020-10-09 | 台州创兴环保科技有限公司 | Liquid-transfering gun for laboratory |
-
2019
- 2019-04-28 CN CN201920591171.4U patent/CN210279196U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111744567A (en) * | 2020-06-24 | 2020-10-09 | 台州创兴环保科技有限公司 | Liquid-transfering gun for laboratory |
| CN111744567B (en) * | 2020-06-24 | 2021-03-30 | 巨爱宁 | Liquid-transfering gun for laboratory |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200410 Termination date: 20210428 |