Integrated automatic pipetting device

Abstract

The utility model relates to an integrated automatic pipetting device. The device comprises a handheld liquid taking bracket which is formed by connecting a bracket main body and a handle and is shaped like a Chinese character'ji '. A dry battery power supply system is embedded in the lower part of the back of the handle; a drainage hole is formed in the bottom of the handle; a liquid taking pump is embedded in the middle of the handle, an anti-suck-back device is embedded in the upper part of the handle, and a buckle for fixing a big-belly pipette is arranged on the side surface of the handle; the top of the big-belly pipette is connected with the anti-suck-back device; the suck-back prevention device is connected with the inlet end of the liquid taking pump; the liquid taking pump is connected with a dry battery power supply system; the front face of the support body is provided with an on-key button, a key button and an off-key button of a power source. The key opening button and the key button are respectively connected with the liquid taking pump; and the on-key button, the key button and the off-key button are respectively connected with the dry battery power supply system. The device can improve the liquid taking efficiency and reduce the test cost, is convenient to transport and carry, is simple to install and manufacture on site, and can be widely applied to the technical field of laboratory detection.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of laboratory detection equipment, especially to an integrated automatic pipetting device. BACKGROUND

[0002] The big-bell pipette is often used in the experiment process and is a relatively accurate liquid transfer tool. In the laboratory operation process, the separation and movement of the liquid are important links of the operation, and the liquid is usually separated and moved manually by using the ear ball and the pipette. The operation of sucking and discharging the liquid during the reagent test needs the cooperation of both hands to accurately separate and take the liquid. Sometimes, the appropriate liquid volume can be obtained only after repeated tests. The operation failure rate is high, which increases a lot of additional work burden. The traditional pipette operation requires high proficiency and concentration of the test personnel, and there is a risk of error caused by operation failure. After failure, repeated operation is needed. When the big-bell pipette is used, the operation difficulty also increases, which reduces the test efficiency to a certain extent.

[0003] CN117244604A discloses a reagent taking device and a using method thereof. The device solves the problems of inconvenient operation, easy pollution of experimental reagents and experimental personnel of the existing reagent taking device. The device comprises a pipette, a rubber hose and an ear ball. The two ends of the rubber hose are communicated with the pipette and the ear ball, respectively. During use, according to the pipetting requirement, a pipette with a suitable range is selected, and the ear ball, the rubber hose and the pipette are combined and installed. When taking the liquid, one hand holds the pipette, the other hand holds the ear ball, the pipette is placed below the liquid surface, the hand holding the ear ball is pinched, at this time, due to the change of pressure, the liquid enters the pipette. If it is necessary to adjust the liquid level, the pipette is lifted to be in line with the sight, the ear ball is loosened, the liquid level in the pipette is controlled, the taking of the liquid is completed, the posture of holding the ear ball is kept unchanged, the pipette is transferred to the container to be discharged, the ear ball is loosened, and the discharging is completed. The method is simple and operable, and is convenient to use. However, it has the following disadvantages: it is only a simple combination of auxiliary equipment, and there is still difficulty in the operation process, and the purpose of precise control cannot be achieved.

[0004] CN117599877A discloses a multi-gear adjustable pipette liquid taking auxiliary device, which belongs to the technical field of pipettes. The device comprises an empty cylinder, a first piston plate slidingly connected to the inner wall of the empty cylinder, a driving plate fixedly connected to the surface of the first piston plate through a piston rod, a top plug fixedly connected to the bottom of the first piston plate through a first spring, a through hole formed in the top plug, a connecting rod fixedly connected to the bottom of the top plug, a bottom plug fixedly connected to the bottom of the connecting rod, the bottom plug being fixedly connected to the empty cylinder, a first one-way valve mounted on the bottom plug and the first piston plate, an air inlet pipe fixedly connected to the outer wall of the empty cylinder, a liquid discharge speed-up valve fixedly connected to the air inlet pipe, a suction ball fixedly connected to the free end of the air inlet pipe, a second one-way valve mounted on the suction ball, a butt joint fixedly connected to the bottom of the empty cylinder, and a soft rubber plug fixedly connected to the outer wall of the butt joint. The auxiliary device is simple to operate and convenient to use, and improves the liquid taking and discharging precision of the pipette. However, the device has the following disadvantages: first, the device is complex to manufacture, and requires the setting of an empty cylinder, a piston and the like, which is high in manufacturing cost and difficult to popularize in laboratories. Second, the operation is difficult, and requires high technical personnel operation and high training cost.

[0005] Therefore, there is an urgent need for an optimal combination to improve liquid taking efficiency and reduce test cost. Practical new type content

[0006] The technical problem to be solved by the present application is to provide an integrated automatic pipetting device which improves liquid taking efficiency and reduces test cost.

[0007] To solve the above problems, the integrated automatic pipetting device comprises a hand-held liquid taking support connected by a support main body and a handle and shaped like a, a dry battery power supply system embedded in the lower part of the back of the handle, a liquid discharge hole arranged at the bottom of the handle, a liquid taking pump embedded in the middle of the handle, an anti-suck-back device embedded in the upper part of the handle, and a buckle for fixing a large-bellied pipette arranged on the side of the handle, the top of the large-bellied pipette is connected with the anti-suck-back device through a hard glass tube I, the anti-suck-back device is connected with the inlet end of the liquid taking pump through a hard glass tube II, the outlet end of the liquid taking pump is connected with a hard glass tube III, the end of the hard glass tube III passes through the liquid discharge hole and is connected with a waste liquid container, the liquid taking pump is connected with the dry battery power supply system, the front of the support main body is provided with an on-key button, a key button and a release-key button, the on-key button and the key button are connected with the liquid taking pump respectively, and the on-key button, the key button and the release-key button are connected with the dry battery power supply system respectively.

[0008] The hand-held liquid taking support is formed by pressing two PVC templates together.

[0009] The large-bellied pipette is parallel to the handle.

[0010] The hard glass tube I, the hard glass tube II and the hard glass tube III are embedded in the handheld liquid taking support.

[0011] The height of the hard glass tube I in the support body is higher than the height of the hard glass tube II in the support body.

[0012] Compared with the prior art, the utility model has the following advantages:

[0013] 1、The handheld liquid taking support in the utility model adopts PVC material, can realize effective fixing of auxiliary tools, is light in quality and convenient to operate, reduces liquid taking cost of test, and improves work efficiency.

[0014] 2、The dry battery power supply system is adopted in the utility model, and can be applicable to various operation environments.

[0015] 3、The anti-suckback device is arranged in the utility model, liquid damage to instruments due to excessive suction can be effectively prevented, instrument safety is protected, and operating personnel are prevented from being hurt.

[0016] 4、The liquid taking pump is arranged in the utility model, liquid suction and discharge can be realized, the purpose of accurate liquid transfer is achieved, and calibration equipment is not needed in combination with the scale line on the pipette.

[0017] 5、The utility model is an integrated automatic device, not only reduces pipetting difficulty, but also improves accuracy, effectively solves the problems of great difficulty in pipetting of a large-bell pipette, the need for repeated practice, and accurate liquid transfer through skilled operation, greatly reduces the harm of various pollutants to operating personnel when liquid is taken, reduces occupational hazards, and protects human health.

[0018] 6、The utility model is convenient to transport and carry, simple to install and manufacture on site, and can be widely applied to the technical field of laboratory detection. DRAWINGS

[0019] The specific implementation mode of the utility model will be further described in detail below in combination with the drawings.

[0020] Figure 1 It is a structural schematic view of the utility model.

[0021] In the figure: 1 is a handheld liquid taking support; 21 is a hard glass tube I; 22 is a hard glass tube II; 23 is a hard glass tube III; 3 is an anti-suckback device; 4 is a liquid taking pump; 5 is a dry battery power supply system; 6 is a buckle; and 7 is a large-bell pipette. PREFERRED EMBODIMENT

[0022] For example, Figure 1As shown, an integrated automatic pipetting device, the device comprises a hand-held liquid taking support 1 connected by a bracket body and a handle in the shape of "T". The back lower part of the handle is embedded with a dry battery power supply system 5, the bottom of the handle is provided with a liquid discharge hole; the middle part of the handle is embedded with a liquid taking pump 4, the upper part is embedded with an anti-suckback device 3, and the side surface is provided with a buckle 6 for fixing a large-bellied pipette 7; the top of the large-bellied pipette 7 is connected with the anti-suckback device 3 through a hard glass tube I 21; the anti-suckback device 3 is connected with the inlet end of the liquid taking pump 4 through a hard glass tube II 22, and the outlet end of the liquid taking pump 4 is connected with a hard glass tube III 23; the end of the hard glass tube III 23 penetrates through the liquid discharge hole and is connected with a waste liquid container; the liquid taking pump 4 is connected with the dry battery power supply system 5; the front surface of the bracket body is provided with a power-on key button, a key button and a release key button; the power-on key button and the key button are connected with the liquid taking pump 4 respectively; the power-on key button, the key button and the release key button are connected with the dry battery power supply system 5 respectively.

[0023] Wherein: the hand-held liquid taking support 1 is formed by pressing two PVC templates together, which can meet the fixation and vertical support of various hard glass tubes, the anti-suckback device 3 and the like, and realize stable work of the pump body and ensure the accuracy of liquid taking.

[0024] The large-bellied pipette 7 is parallel to the handle.

[0025] The hard glass tube I 21, the hard glass tube II 22 and the hard glass tube III 23 are embedded in the hand-held liquid taking support 1.

[0026] The height of the hard glass tube I 21 in the bracket body is higher than the height of the hard glass tube II 22 in the bracket body.

[0027] The buckle 6 on the side surface of the handle can ensure that the large-bellied pipette 7 does not fall off and shake, plays a role in fixation and vertical support, and facilitates liquid transfer.

[0028] When the liquid is excessive, the anti-suckback device 3 can make the excessive liquid enter the liquid taking pump 4, plays a role in buffering, and prevents test accidents.

[0029] The liquid taking pump 4 adopts a high-precision pump and can be applied to various working conditions, greatly saving manpower and material resources.

[0030] The dry battery power supply system 5 is adopted, the battery can be replaced regularly, and no power supply is needed, which is light and convenient to carry.

[0031] The hand-held liquid taking support 1 adopts a handle design, which is convenient for one-handed operation.

[0032] The purpose of setting the release key button in the utility model is to press the air pressure to be consistent with the outside world after pressing, and to automatically realize liquid release.

[0033] Before taking liquid, according to the positive and negative electrode requirements, correctly install two 5 dry batteries, ensure that the liquid pump 4 circuit system is normal and can work normally. Click the power on key button, the liquid pump 4 works normally, extracts liquid; click the key button, the liquid pump 4 stops working, keeps the original pressure, the liquid and liquid level remain unchanged, click the release key button, turn off the dry battery power supply system 5, the liquid pipeline is connected with the outside world, and the liquid is released through the natural atmospheric pressure. The left hand holds the handle in the liquid taking support 1, and the four fingers except the thumb pinch the device tightly to ensure that it does not shake, the device is perpendicular to the ground, and the thumb realizes the normal operation of the "on", "off" and "release" keys. The right hand holds the liquid to be moved, and the big belly pipette 7 is placed below the liquid surface to be moved to ensure that the liquid surface above the nozzle can meet the requirements of the liquid taking amount. Press the on key button with the thumb, ensure that the uppermost scale position of the big belly pipette 7 is parallel to the eye view angle, and then press the key button with the thumb after ensuring that the lowermost concave liquid surface is coincided with the scale line. After the extraction is completed, place the big belly pipette 7 in the target container, and then click the release key button. The moved liquid is released through the action of gravity, and the liquid taking is completed.

[0034] After taking liquid, the above steps are used to clean with the corresponding cleaning liquid, and the big belly pipette 7 is washed at least three times until it is clean. After cleaning is completed, the big belly pipette 7 is placed in the box.

Claims

1. An integrated automated pipetting device, characterized by: The device comprises a hand-held liquid taking support (1) connected by a support body and a handle and shaped like a "U"; a dry battery power supply system (5) is embedded in the lower part of the back of the handle, and a liquid discharge hole is arranged at the bottom of the handle; a liquid taking pump (4) is embedded in the middle part of the handle, an anti-back suction device (3) is embedded in the upper part of the handle, and a buckle (6) for fixing a large-bellied pipette (7) is arranged on the side of the handle; the top of the large-bellied pipette (7) is connected with the anti-back suction device (3) through a hard glass tube I (21); the anti-back suction device (3) is connected with the inlet end of the liquid taking pump (4) through a hard glass tube II (22), and the outlet end of the liquid taking pump (4) is connected with a hard glass tube III (23); the end of the hard glass tube III (23) penetrates through the liquid discharge hole and is connected with a waste liquid container; the liquid taking pump (4) is connected with the dry battery power supply system (5); the front of the support body is provided with an on-key button, a key button and a release-key button of the power supply; The on-key button and the key button are respectively connected with the liquid taking pump (4); the on-key button, the key button and the release-key button are respectively connected with the dry battery power supply system (5).

2. An integrated automated pipetting device as in claim 1, wherein: The hand-held liquid taking support (1) is made of two PVC templates pressed together.

3. An integrated automated pipetting device as in claim 1, wherein: The large-bellied pipette (7) is parallel to the handle.

4. An integrated automated pipetting device as in claim 1, wherein: The hard glass tube I (21), the hard glass tube II (22) and the hard glass tube III (23) are embedded in the hand-held liquid taking support (1).

5. An integrated automated pipetting device as in claim 4, wherein: The height of the hard glass tube I (21) in the support body is higher than the height of the hard glass tube II (22) in the support body.

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