Detachable pipette

Abstract

The utility model relates to a detachable pipette, which belongs to the technical field of pipettes and comprises a pipette body, the bottom of the pipette body is fixedly connected with a sleeve, the bottom of the sleeve is fixedly connected with a tip cone, and the inner wall of the tip cone is provided with a groove. The liquid transfer gun disclosed by the utility model has the beneficial effects that when the liquid transfer gun body is used for sucking liquid, if a suck-back phenomenon occurs, the liquid flows through and touches the liquid suck-back contact type sensor, the liquid suck-back contact type sensor transmits information to the controller, and the controller controls the alarm lamp of the sensor to be turned on, so that the liquid transfer gun body can suck the liquid. Immediately triggering an alarm by the sensor alarm lamp, displaying red color, stopping sample adding by an operator, disassembling the pipette body through the detachable assembly, and then cleaning and disinfecting, so that the phenomenon that the pipette body sucks back due to errors of the operator is avoided, the experiment accuracy can be improved, and the pipette body can be disassembled, cleaned and disinfected at any time; and the service life of the pipette body is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to pipette technical field especially relates to a detachable pipette. BACKGROUND

[0002] Pipette belongs to one kind of pipettor, is often used for the pipetting of small or trace liquid, different specifications, different specifications pipette are matched with different size gun head, the shape produced by different manufacturers is also slightly different, but the working principle and operating method are basically consistent, the commonly used pipette on the market is air cushion type piston pipettor, the piston system is built in the pipettor, the moving distance of the piston is realized by the adjusting wheel control screw rod structure, the push button drives the push rod to make the piston move downward, the gas in the piston cavity is discharged, after the hand is released, the piston restores to the original position under the action of the return spring, thereby completing the liquid absorption, when discharging liquid, the piston pushes the air to discharge liquid, the pipette is suitable for medical laboratory, biotechnology laboratory, food laboratory, pharmacy and chemical laboratory, environmental laboratory etc., mainly applied in sample preparation stage in medical clinical laboratory, realizes accurate liquid proportioning transfer.

[0003] The gun head matched with the pipette on the market is mostly disposable plastic, and the phenomenon of back suction may occur in the process of experimental operation, if the pipette back suction is not found in time and the experiment continues, the pipette is often contaminated, thereby affecting the accuracy of experimental results, and currently part of the pipette is of integrated structure and cannot be disassembled, so that the gun wall cannot be cleaned and disinfected, thereby affecting the experimental results. UTILITY MODEL CONTENT

[0004] In view of the above problems existing in the prior art, the main purpose of the utility model is to provide a detachable pipette.

[0005] The technical scheme of the utility model is as follows: a detachable pipette, including pipette body, the bottom of the pipette body is fixedly connected with a sleeve, the bottom of the sleeve is fixedly connected with a suction head cone, the inner wall of the suction head cone is provided with a groove, the inner wall of the suction head cone is provided with a liquid back suction contact type inductor, the side close to the groove of the liquid back suction contact type inductor is fixedly connected with a protrusion, the protrusion is clamped with the groove, the inner wall of the groove is embedded with a magnet, the side close to the groove of the liquid back suction contact type inductor is embedded with an iron sheet, the outer side of the pipette body is fixedly installed with an inductor alarm lamp, the top of the pipette body is provided with an upper cover, the top of the upper cover is fixedly installed with a controller.

[0006] By adopting the above technical scheme, when liquid suction is performed by using the pipette body, if reverse suction occurs, liquid will flow through the liquid reverse suction contact type sensor, the liquid reverse suction contact type sensor will transmit information to the controller, and the sensor alarm lamp will be started through the controller control, and then the sensor alarm lamp will trigger an alarm immediately.

[0007] As a preferred embodiment, the inner part of the upper cover is provided with a detachable assembly, which comprises a sliding groove opened in the inner part of the upper cover, a limiting disc slidingly connected in the sliding groove, a pull rod fixedly connected to the top of the limiting disc, and a spring sleeved outside the pull rod and above the limiting disc.

[0008] By adopting the above technical scheme, when the upper cover contacts the pipette body, the limiting disc will slide in the sliding groove through the reaction force of the spring, thereby enabling the insertion rod to enter the insertion hole.

[0009] As a preferred embodiment, the detachable assembly further comprises an insertion hole opened in the inner part of the pipette body, and the bottom of the limiting disc is fixedly connected with an insertion rod, and the insertion rod is clamped with the insertion hole.

[0010] By adopting the above technical scheme, the upper cover and the pipette body can be fixed through the clamping state of the insertion rod and the insertion hole.

[0011] As a preferred embodiment, a hinge is arranged between the upper cover and the pipette body, the upper cover and the pipette body are connected through the hinge, and a piston rod is slidingly installed in the inner part of the pipette body.

[0012] By adopting the above technical scheme, the external liquid can be drawn into the pipette body through the pulling of the piston rod.

[0013] As a preferred embodiment, a volume display window is fixedly installed on the outer side of the pipette body, and a handle is fixedly connected to the outer side of the pipette body.

[0014] By adopting the above technical scheme, the volume display window is arranged to enable the operator to easily understand the volume of the liquid.

[0015] As a preferred embodiment, a push button is fixedly connected to the top of the piston rod, and a vent hole is opened in the inner part of the upper cover.

[0016] By adopting the above technical scheme, the push button is arranged to enable the piston rod to be pushed and pulled.

[0017] As a preferred embodiment, the top of the pull rod extends to the outer side of the upper cover and is fixedly connected with a pull ring.

[0018] By adopting the technical scheme, the pull rod can be pulled conveniently.

[0019] As a preferred implementation, the sealing ring is fixedly connected to the inner wall of the upper cover and the upper cover of the pipette body.

[0020] By adopting the technical scheme, the sealing ring is fixedly connected to the inner wall of the upper cover and the upper cover of the pipette body.

[0021] Compared with the prior art, the pipette body has the advantages and positive effects that,

[0022] 1. In the pipette body, if the liquid flows through the liquid back-suction contact type sensor, the liquid back-suction contact type sensor will transmit information to the controller, and the controller will control the sensor alarm lamp to start, and the sensor alarm lamp will trigger an alarm immediately, showing red, the operator should stop adding samples, and the pipette body is disassembled through the detachable assembly, and then cleaned and disinfected, so that the pipette body is not back-sucked due to the operator's mistake, the accuracy of the experiment is improved, the pipette body can be disassembled and cleaned and disinfected at any time, and the service life of the pipette body is prolonged.

[0023] 2. When the upper cover contacts the pipette body, the spring will push the limiting disc to slide in the sliding groove, and then drive the insertion rod into the insertion hole, so that the insertion rod and the insertion hole are in a clamping state, and the upper cover and the pipette body are fixed, and the pull rod is pulled to unlock the upper cover, so that the operator can clean and disinfect the inner wall of the pipette body. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 The utility model provides a kind of overall perspective view of detachable pipette gun;

[0025] Figure 2 The utility model provides a kind of detachable pipette gun detachable assembly schematic view;

[0026] Figure 3 The utility model provides a kind of detachable pipette gun Figure 2 The utility model provides a kind of detachable pipette gun

[0027] Legend: 1, pipette body; 2, volume display window; 3, sensor alarm lamp; 4, handle; 5, sleeve; 6, suction head cone; 7, groove; 8, liquid back-suction contact type sensor; 9, piston rod; 10, push button; 11, controller; 12, upper cover; 13, sealing ring; 14, insertion hole; 15, sliding groove; 16, pull rod; 17, spring; 18, limiting disc; 19, insertion rod. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0029] With reference to Figures 1-3 A detachable pipette comprises a pipette body 1, a sleeve 5 fixedly connected to the bottom of the pipette body 1, a suction head cone 6 fixedly connected to the bottom of the sleeve 5, a groove 7 formed in the inner wall of the suction head cone 6, a liquid reverse suction contact type sensor 8 arranged on the inner wall of the suction head cone 6, a protrusion fixedly connected to one side of the liquid reverse suction contact type sensor 8 close to the groove 7, the protrusion being engaged with the groove 7, a magnet embedded in the inner wall of the groove 7, an iron sheet embedded in one side of the liquid reverse suction contact type sensor 8 close to the groove 7, an inductor alarm lamp 3 fixedly installed on the outer side of the pipette body 1, an upper cover 12 arranged on the top of the pipette body 1, and a controller 11 fixedly installed on the top of the upper cover 12. When the pipette body 1 is used to suck liquid, if reverse suction occurs, liquid will flow to the liquid reverse suction contact type sensor 8, the liquid reverse suction contact type sensor 8 will transmit information to the controller 11, and the controller 11 will control the inductor alarm lamp 3 to start, and the inductor alarm lamp 3 will immediately trigger an alarm and present red color. The operator should stop adding samples, detach the pipette body 1 through the detachable assembly, and then clean and disinfect the pipette body 1, so as to avoid reverse suction of the pipette body 1 due to operator's mistake, improve the accuracy of experiments, clean and disinfect at any time, and prolong the service life of the pipette body 1.

[0030] Specifically, the inside of the upper cover 12 is provided with a detachable assembly, the detachable assembly comprises a sliding groove 15 formed in the inside of the upper cover 12, a limiting disc 18 slidingly connected in the inside of the sliding groove 15, a pull rod 16 fixedly connected to the top of the limiting disc 18, and a spring 17 sleeved with the outer side of the pull rod 16 and located above the limiting disc 18. The detachable assembly further comprises a plug hole 14 formed in the inside of the pipette body 1, and a plug rod 19 fixedly connected to the bottom of the limiting disc 18 and engaged with the plug hole 14. When the upper cover 12 contacts with the pipette body 1, the limiting disc 18 will slide in the sliding groove 15 through the reaction force of the spring 17, and the plug rod 19 will enter the plug hole 14, so that the plug rod 19 and the plug hole 14 are in an engaged state, and the upper cover 12 and the pipette body 1 are fixed. When the pull rod 16 is pulled, the upper cover 12 can be unlocked, so that the operator can clean and disinfect the inner wall of the pipette body 1.

[0031] Specifically, the hinge is arranged between the upper cover 12 and the pipette body 1, the upper cover 12 is connected with the pipette body 1 through the hinge, the piston rod 9 is slidably installed in the pipette body 1, the external liquid can be sucked into the pipette body 1 by pulling the piston rod 9, so that the pipetting purpose of the liquid is realized, the volume display window 2 is fixedly installed on the outer side of the pipette body 1, the volume display window 2 is arranged, so that the operator can understand the volume of the liquid, the handle 4 is fixedly connected to the outer side of the pipette body 1, the push button 10 is fixedly connected to the top of the piston rod 9, the piston rod 9 can be pushed and pulled through the push button 10, the air hole is arranged in the upper cover 12, the pull rod 16 extends to the outer side of the upper cover 12 and is fixedly connected with the pull ring, so as to facilitate pulling the pull rod 16, the sealing ring 13 is fixedly connected to the inner wall of the pipette body 1 and the upper cover 12, the two sealing rings 13 abut each other, and the sealing property of the pipette body 1 and the upper cover 12 can be improved through the sealing ring 13.

[0032] Working principle: first, when using the pipette body 1 to suck liquid, the upper cover 12 can be rotated and contacted with the pipette body 1, the limiting disc 18 is pushed to slide in the sliding groove 15 through the reaction force of the spring 17, and then the inserting rod 19 can be driven to enter the insertion hole 14, so that the inserting rod 19 and the insertion hole 14 are in the clamping state, and then the upper cover 12 and the pipette body 1 are fixed, if the reverse suction phenomenon occurs, the liquid flows through the liquid reverse suction contact type sensor 8, the liquid reverse suction contact type sensor 8 transmits information to the controller 11, and the sensor alarm lamp 3 is started through the controller 11, and then the sensor alarm lamp 3 triggers the alarm immediately, and presents red, the operator should stop adding sample, and then pull the pull rod 16, so as to unlock the upper cover 12, so that the operator can clean and disinfect the inner wall of the pipette body 1, so as to avoid the reverse suction phenomenon of the pipette body 1 due to the mistake of the operator, and improve the accuracy of the experiment.

[0033] In the description of the present application, it should be pointed out that, unless otherwise specified and limited, the terms "installation", "arranged with", "connection" and the like should be understood in a broad sense, for example, "connection" can be fixed connection, can also be detachable connection, or integral connection, can be mechanical connection, can also be electrical connection, can be directly connected, can also be indirectly connected through an intermediate medium, can be the communication between two elements, and those skilled in the art can understand the specific meaning of the above terms in the present application according to the specific situation.

[0034] The above merely describes the preferred embodiments of the present application, and is not used to limit the present application, and although the present application is described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or make equivalent replacements to some technical features, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A detachable pipette comprising a pipette body (1), characterized in that: The bottom of the pipette body (1) is fixedly connected with a sleeve (5), the bottom of the sleeve (5) is fixedly connected with a suction head cone (6), the inner wall of the suction head cone (6) is provided with a groove (7), and the inner wall of the suction head cone (6) is provided with a liquid reverse suction contact type inductor (8). The side of the liquid reverse suction contact type inductor (8) close to the groove (7) is fixedly connected with a protrusion, the protrusion is clamped with the groove (7), the inner wall of the groove (7) is embedded with a magnet, the side of the liquid reverse suction contact type inductor (8) close to the groove (7) is embedded with an iron sheet, the outer side of the pipette body (1) is fixedly installed with an inductor alarm lamp (3), the top of the pipette body (1) is provided with an upper cover (12), and the top of the upper cover (12) is fixedly installed with a controller (11).

2. A detachable pipette according to claim 1, characterized in that: The inside of the upper cover (12) is provided with a detachable assembly, the detachable assembly comprises a sliding groove (15) formed in the inside of the upper cover (12), the inside of the sliding groove (15) is slidably connected with a limiting disc (18), the top of the limiting disc (18) is fixedly connected with a pull rod (16), and the outer side of the pull rod (16) and above the limiting disc (18) are sleeved with a spring (17).

3. A removable pipette according to claim 2, characterized in that: The detachable assembly further comprises a jack (14) formed in the inside of the pipette body (1), and the bottom of the limiting disc (18) is fixedly connected with a plug rod (19).

4. The detachable pipette of claim 1, wherein: A hinge is arranged between the upper cover (12) and the pipette body (1), the upper cover (12) and the pipette body (1) are connected through the hinge, and the inside of the pipette body (1) is slidably installed with a piston rod (9).

5. The detachable pipette of claim 1, wherein: The outer side of the pipette body (1) is fixedly installed with a volume display window (2), and the outer side of the pipette body (1) is fixedly connected with a handle (4).

6. A detachable pipette according to claim 4, characterized in that: The top of the piston rod (9) is fixedly connected with a push button (10), and the inside of the upper cover (12) is provided with a vent hole.

7. A detachable pipette according to claim 2, characterized in that: The top of the pull rod (16) extends to the outside of the upper cover (12) and is fixedly connected with a pull ring.

8. A detachable pipette according to claim 1, characterized in that: The inner walls of the pipette body (1) and the upper cover (12) are fixedly connected with sealing rings (13), and the two sealing rings (13) abut each other.

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