CN215541001U

CN215541001U - Interval adjustable double-end liquid-transfering gun

Info

Publication number: CN215541001U
Application number: CN202121593939.5U
Authority: CN
Inventors: 刘浩; 焦豪妍; 周伟明
Original assignee: Guangdong Food and Drugs Vocational College
Current assignee: Guangdong Food and Drugs Vocational College
Priority date: 2021-07-13
Filing date: 2021-07-13
Publication date: 2022-01-18
Anticipated expiration: 2031-07-13

Abstract

The utility model belongs to the field of pipette, in particular to a double-head pipette with adjustable space, which comprises a pipette main body, a first pipette head, a second pipette head and a connecting pipe; the bottom end of the liquid transferring gun main body is fixedly connected with two groups of connecting pipes, a first liquid transferring head and a second liquid transferring head are respectively sleeved on the outer sides of the two groups of connecting pipes, and an interval adjusting mechanism is arranged at the bottom end of each connecting pipe; the spacing adjusting mechanism comprises racks, gears, fixing blocks, connecting blocks, first springs, abutting blocks, inserting blocks and inserting grooves, the racks are arranged in two groups, the two groups of racks are fixedly connected with the first liquid transferring head and the second liquid transferring head respectively, the gears are arranged between the two groups of racks, and the fixing blocks are sleeved on the outer sides of the gears; the distance between the first liquid transferring head and the second liquid transferring head is adjusted through the distance adjusting mechanism, and liquid transferring is performed on two groups of containers with different specifications at the same time.

Description

Interval adjustable double-end liquid-transfering gun

Technical Field

The utility model relates to the field of pipette guns, in particular to a double-head pipette gun with an adjustable space.

Background

Pipette guns, a type of pipette, are commonly used in laboratories for pipetting small or minute quantities of liquids, and the amount of liquid pipetted has been precisely controlled over a long period of time with existing pipette guns.

The existing double-head liquid transferring gun can not adjust the distance between two liquid transferring heads, is inconvenient to extract liquid in two groups of containers with different specifications and is inconvenient to extract; therefore, a double-head pipette with adjustable spacing is provided for solving the problems.

SUMMERY OF THE UTILITY MODEL

In order to make up for the defects of the prior art and solve the problem that the distance between two liquid transferring heads cannot be adjusted by most of the conventional double-head liquid transferring guns, the utility model provides a double-head liquid transferring gun with an adjustable distance.

The technical scheme adopted by the utility model for solving the technical problems is as follows: the utility model relates to a double-head pipette with adjustable space, which comprises a pipette main body, a first pipette head, a second pipette head and a connecting pipe, wherein the first pipette head is arranged on the pipette main body; the bottom end of the liquid transferring gun main body is fixedly connected with two groups of connecting pipes, a first liquid transferring head and a second liquid transferring head are respectively sleeved on the outer sides of the two groups of connecting pipes, and an interval adjusting mechanism is arranged at the bottom end of each connecting pipe; the spacing adjusting mechanism comprises two groups of racks, a gear, a fixed block, a connecting block, a first spring, a butting block, an inserting block and a slot, and two groups of the racks are respectively and fixedly connected with the first liquid transferring head and the second liquid transferring head, the gear is arranged between the two groups of racks, the fixed block is sleeved on the outer side of the gear, the fixed block is fixedly connected with the bottom end of the liquid-transfering gun main body, the connecting block is fixedly connected with the bottom end of the liquid-transfering gun main body, the first spring is arranged inside the connecting block, the abutting block is sleeved inside the connecting block, the inserting block penetrates through the abutting block and is inserted into the connecting block, the inserting groove is formed in one side of the inside of the connecting block and is clamped with the inserting block, the distance between the first liquid transferring head and the second liquid transferring head is adjusted through the distance adjusting mechanism, and liquid transferring is performed on two groups of containers with different specifications at the same time.

Preferably, all be provided with quick replacement mechanism between connecting pipe and first pipetting head and the second pipetting head, quick replacement mechanism includes spacing chamber, spacing spring, stopper and spacing groove, the both sides on first pipetting head and second pipetting head inner wall top are seted up to spacing chamber, spacing spring sets up the inside in spacing chamber, the inside in spacing chamber is established to the stopper cover, the both sides at the connecting pipe are seted up to the spacing groove, and spacing groove and second spout block play the effect that the convenience was changed first pipetting head and second pipetting head through quick replacement mechanism.

Preferably, the gear is fixedly connected with the knob, and the anti-skidding line is seted up in the outside of knob, plays the effect of preventing the slippage when rotating the knob through seting up the anti-skidding line in the outside of knob.

Preferably, the inserted block is close to the first slider of bottom fixedly connected with of slot one side, and first slider sliding connection is in the inside of first spout, the inside at the butt joint piece is seted up to first spout, the inside of first spout is provided with the second spring, plays the effect that makes the inserted block more smooth and easy when removing through the effect of first slider and first spout.

Preferably, the stopper is close to the both ends of spacing spring one side and all fixedly connected with second slider, and second slider sliding connection is in the inside of second spout, the both ends at spacing intracavity portion are seted up to the second spout, play through the effect of second slider and second spout and prevent that the stopper from blocking because of frictional force's too big when removing.

Preferably, one side of the limiting spring close to the limiting block is fixedly connected with the limiting block, one side of the limiting spring far away from the limiting block is fixedly connected inside the limiting cavity, and the effect of reducing force of the limiting spring is utilized to achieve the effect of enabling the limiting block to automatically rebound.

The utility model has the advantages that:

1. according to the double-head liquid transferring gun, the function of adjusting the distance between the first liquid transferring head and the second liquid transferring head is realized through the structural design of the rack, the gear, the fixing block, the connecting block, the first spring, the abutting block, the inserting block and the inserting slot, the distance between the first liquid transferring head and the second liquid transferring head is adjusted through the combined action of the rack and the gear, and the distance between the first liquid transferring head and the second liquid transferring head is fixed through the combined action of the connecting block, the first spring, the abutting block, the inserting block and the inserting slot, so that the problem that the distance between the two liquid transferring heads cannot be adjusted by the conventional double-head liquid transferring gun is solved, and the liquid transferring operation efficiency of two groups of containers with different sizes is improved;

2. according to the utility model, through the structural design of the limiting cavity, the limiting spring, the limiting block and the limiting groove, the function of replacing the first liquid transferring head and the second liquid transferring head is realized, the first liquid transferring head and the second liquid transferring head are fixed through the combined action of the limiting cavity, the limiting spring, the limiting block and the limiting groove, the problem that the liquid transferring heads cannot be replaced due to the fact that most of the existing liquid transferring guns are designed integrally is solved, the adaptability of the device to different liquid transferring heads is improved, and the device is convenient to install different liquid transferring heads to perform liquid transferring operation on different liquids.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

FIG. 1 is a schematic perspective view of a first embodiment;

FIG. 2 is a schematic cross-sectional front view illustrating a structure of the first embodiment;

FIG. 3 is an enlarged schematic view of a portion A of FIG. 2 according to the first embodiment;

FIG. 4 is an enlarged structural diagram of the first embodiment at B in FIG. 3;

FIG. 5 is a schematic diagram illustrating a partial cross-sectional side view according to a first embodiment;

FIG. 6 is an enlarged structural view of the first embodiment at C in FIG. 5;

FIG. 7 is an enlarged structural view of the first embodiment at D in FIG. 5;

fig. 8 is a schematic structural diagram of a partial front cross section in the second embodiment.

In the figure: 1. a pipette body; 2. a first pipetting head; 3. a second pipetting head; 41. a rack; 42. a gear; 43. a fixed block; 44. a knob; 45. connecting blocks; 46. a first spring; 47. a butting block; 48. inserting a block; 49. a slot; 410. a first slider; 411. a first chute; 412. a second spring; 5. a connecting pipe; 61. a limiting cavity; 62. a limiting spring; 63. a limiting block; 64. a second slider; 65. a second chute; 66. a limiting groove; 67. a clamping block; 68. a clamping groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example one

Referring to fig. 1-7, a spacing-adjustable double-head pipette includes a pipette body 1, a first pipette head 2, a second pipette head 3 and a connecting tube 5; the bottom end of the liquid transferring gun main body 1 is fixedly connected with connecting pipes 5, the connecting pipes 5 are provided with two groups, a first liquid transferring head 2 and a second liquid transferring head 3 are respectively sleeved on the outer sides of the two groups of connecting pipes 5, and the bottom end of each connecting pipe 5 is provided with an interval adjusting mechanism; the distance adjusting mechanism comprises racks 41, gears 42, fixing blocks 43, connecting blocks 45, first springs 46, abutting blocks 47, inserting blocks 48 and inserting grooves 49, two groups of the racks 41 are arranged, the two groups of the racks 41 are respectively fixedly connected with the first liquid transferring head 2 and the second liquid transferring head 3, the gears 42 are arranged between the two groups of the racks 41, the fixing blocks 43 are sleeved on the outer sides of the gears 42, the fixing blocks 43 are fixedly connected with the bottom ends of the liquid transferring gun main bodies 1, the connecting blocks 45 are fixedly connected with the bottom ends of the liquid transferring gun main bodies 1, the first springs 46 are arranged inside the connecting blocks 45, the abutting blocks 47 are sleeved inside the connecting blocks 45, the inserting blocks 48 penetrate through the abutting blocks 47 and are inserted inside the connecting blocks 45, the inserting grooves 49 are formed in one side inside the connecting blocks 45, and the inserting grooves 49 are clamped with the inserting blocks 48; during operation, the rotary knob 44 drives the gear 42 to rotate, the gear 42 rotates to drive the two sets of racks 41 to move in opposite directions respectively, after the rack is moved to a specified position, the insert block 48 is pulled outwards to enable the insert block 48 to be disengaged from the slot 49, the limiting effect on the abutting block 47 is removed, at the moment, the abutting block 47 moves downwards under the action of the reducing force of the first spring 46 and abuts against the gear 42, the effect of fixing the distance between the first liquid transferring head 2 and the second liquid transferring head 3 is achieved, and the first liquid transferring head 2 and the second liquid transferring head 3 are prevented from moving.

A quick replacement mechanism is arranged between the connecting pipe 5 and the first pipetting head 2 and between the connecting pipe and the second pipetting head 3, the quick replacement mechanism comprises a limiting cavity 61, a limiting spring 62, a limiting block 63 and a limiting groove 66, the limiting cavity 61 is arranged on two sides of the top end of the inner wall of the first pipetting head 2 and the top end of the inner wall of the second pipetting head 3, the limiting spring 62 is arranged inside the limiting cavity 61, the limiting block 63 is sleeved inside the limiting cavity 61, the limiting groove 66 is arranged on two sides of the connecting pipe 5, and the limiting groove 66 is clamped with the second chute 65; during operation, when will removing liquid head 2 or second and remove liquid head 3 and install, first remove liquid head 2 or second and remove liquid head 3 upwards and promote, spacing piece 63 receives the extrusion in the connecting pipe 5 outside under the effect of ascending thrust, spacing piece 63 removes and produces the extrusion to spacing spring 62 to the inside of spacing chamber 61 under the effect of extrusion force, make spacing spring 62 produce elastic deformation, when removing liquid head 2 or second and remove liquid head 3 upwards and loosen first liquid head 2 or second and remove liquid head 3 when can't promoting, the extrusion force to spacing piece 63 in the connecting pipe 5 outside disappears this moment, spacing piece 63 restores to the original position and block with spacing groove 66 under the effect of the reducing force of spacing spring 62 this moment.

The gear 42 is fixedly connected with a knob 44, and the outer side of the knob 44 is provided with anti-skid grains; in operation, the friction between the knob and the hand is increased by the anti-slip threads formed on the outer side of the knob 44, so that the knob 44 is not easily slipped off when rotated.

The bottom end of the insertion block 48 close to one side of the insertion slot 49 is fixedly connected with a first sliding block 410, the first sliding block 410 is connected inside a first sliding groove 411 in a sliding manner, the first sliding groove 411 is arranged inside the abutting block 47, and a second spring 412 is arranged inside the first sliding groove 411; in operation, when the distance between the first pipetting head 2 and the second pipetting head 3 is to be adjusted, the insert block 48 is first pulled upward to drive the abutment block 47 to move upward, the bottom end of the abutment block 47 is released from abutment with the gear 42, the effect of the abutment block 47 on the rotation of the gear 42 is released, the abutment block 47 presses the first spring 46 when the abutment block 47 moves upward, the first spring 46 is elastically deformed, the insert block 48 is also pushed to the side away from the connection block 45 by the action of the slot 49, the first slider 410 fixedly connected with the insert block 48 slides synchronously inside the first sliding slot 411 along with the movement of the insert block 48, the second spring 412 is pressed to elastically deform the second spring 412, the insert block 48 is stopped being pulled when the abutment block 47 is pulled to the bottom end not to abut with the gear 42, at this time, the insert block 48 moves to the side close to the slot 49 by the action of the reducing force of the second spring 412, and is engaged with the slot 49 to limit the abutting block 47, so as to prevent the abutting block 47 from returning to the original position under the action of the reducing force of the first spring 46.

Both ends of one side of the limiting block 63, which is close to the limiting spring 62, are fixedly connected with second sliding blocks 64, the second sliding blocks 64 are connected inside second sliding grooves 65 in a sliding manner, and the second sliding grooves 65 are formed in both ends inside the limiting cavity 61; during operation, the contact area between the limiting block 63 and the limiting cavity 61 is reduced through the combined action of the second sliding block 64 and the second sliding groove 65, so that the friction force is reduced, and the limiting block 63 moves more smoothly.

One side of the limiting spring 62 close to the limiting block 63 is fixedly connected with the limiting block 63, and one side of the limiting spring 62 far away from the limiting block 63 is fixedly connected inside the limiting cavity 61; during operation, stopper 63 removes and produces the extrusion to spacing spring 62 to the inside of spacing chamber 61, makes spacing spring 62 produce elastic deformation, and when upwards promoting first liquid removal head 2 or second liquid removal head 3 and can't promote, stopper 63 restores to the original position and with spacing groove 66 block under the effect of the reducing force of spacing spring 62.

Example two

Referring to fig. 8, in a first comparative example, as another embodiment of the present invention, the top ends of the inner walls of the first pipetting head 2 and the second pipetting head 3 are both fixedly connected with a fixture 67, the fixture 67 is fastened with a clamping groove 68, and the clamping groove 68 is disposed on two sides of the connecting pipe 5; during operation, when installing first pipetting head 2 or second pipetting head 3, when upwards promoting first pipetting head 2 or second pipetting head 3, the outside of connecting pipe 5 produces the extrusion to fixture block 67, make the fixture block 67 that adopts the rubber material produce elastic deformation, when inserting first pipetting head 2 or second pipetting head 3 totally the outside of connecting pipe 5 disappears to the extrusion force of fixture block 67, fixture block 67 love under the effect of self restoring force at this moment and restore to the original state, and play the effect of carrying out auxiliary fixture and auxiliary positioning to first pipetting head 2 or second pipetting head 3 with draw-in groove 68 block.

In the operating principle, when the distance between the first pipetting head 2 and the second pipetting head 3 is to be adjusted, the insert block 48 is first pulled upward to drive the abutting block 47 to move upward, the bottom end of the abutting block 47 is released from the abutting state with the gear 42, the limiting effect of the abutting block 47 on the rotation of the gear 42 is released, when the abutting block 47 moves upward, the abutting block 47 presses the first spring 46 to elastically deform the first spring 46, the insert block 48 is also pushed to the side away from the connecting block 45 under the action of the slot 49, the first slider 410 fixedly connected with the insert block 48 slides synchronously inside the first chute 411 along with the movement of the insert block 48, and presses the second spring 412 to elastically deform the second spring 412, when the abutting block 47 is pulled to the bottom end without being abutted against the gear 42, the insert block 48 is stopped being pulled, at this time, the insert block 48 moves to the side close to the slot 49 under the action of the reducing force of the second spring 412, and is engaged with the slot 49 to limit the abutting block 47, so as to prevent the abutting block 47 from returning to the original position under the action of the reducing force of the first spring 46, then the knob 44 is rotated to drive the gear 42 to rotate, the gear 42 rotates to drive the two groups of racks 41 to respectively move in opposite directions, after the abutting block is moved to a specified position, the inserting block 48 is pulled outwards to release the engagement with the slot 49, so as to release the limiting effect on the abutting block 47, at this time, the abutting block 47 moves downwards under the action of the reducing force of the first spring 46 and is abutted against the gear 42, so that the spacing between the first liquid transfer head 2 and the second liquid transfer head 3 is fixed, and the first liquid transfer head 2 and the second liquid transfer head 3 are prevented from moving.

When the first liquid transfer head 2 or the second liquid transfer head 3 is to be installed, the first liquid transfer head 2 or the second liquid transfer head 3 is pushed upwards, the limiting block 63 is extruded by the outer side of the connecting pipe 5 under the action of the upward pushing force, the limiting block 63 moves towards the inside of the limiting cavity 61 under the action of the extruding force and extrudes the limiting spring 62, so that the limiting spring 62 generates elastic deformation, when the first liquid transfer head 2 or the second liquid transfer head 3 is pushed upwards and cannot be pushed, the first liquid transfer head 2 or the second liquid transfer head 3 is loosened, the extruding force of the outer side of the connecting pipe 5 to the limiting block 63 disappears, at the moment, the limiting block 63 restores to the original position under the action of the reducing force of the limiting spring 62 and is clamped with the limiting groove 66 to play a role in fixing the first liquid transfer head 2 or the second liquid transfer head 3, when the first liquid transfer head 2 or the second liquid transfer head 3 is to be detached, directly pulling the first liquid transferring head 2 or the second liquid transferring head 3 downwards by force.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing shows and describes the general principles, essential features, and advantages of the utility model. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the utility model as claimed.

Claims

1. The utility model provides a spacing adjustable double-end liquid-transfering gun which characterized in that: comprises a pipette main body (1), a first pipette head (2), a second pipette head (3) and a connecting pipe (5); the bottom end of the liquid transferring gun main body (1) is fixedly connected with connecting pipes (5), two groups of the connecting pipes (5) are arranged, a first liquid transferring head (2) and a second liquid transferring head (3) are respectively sleeved on the outer sides of the two groups of the connecting pipes (5), and an interval adjusting mechanism is arranged at the bottom end of the connecting pipe (5);

the interval adjusting mechanism comprises racks (41), gears (42), fixing blocks (43), a connecting block (45), first springs (46), abutting blocks (47), inserting blocks (48) and inserting grooves (49), wherein the racks (41) are provided with two groups, the racks (41) are respectively fixedly connected with a first liquid transferring head (2) and a second liquid transferring head (3), the gears (42) are arranged between the two groups of racks (41), the fixing blocks (43) are sleeved on the outer sides of the gears (42), the fixing blocks (43) are fixedly connected with the bottom end of the liquid transferring gun main body (1), the connecting block (45) is fixedly connected with the bottom end of the liquid transferring gun main body (1), the first springs (46) are arranged in the connecting block (45), the abutting blocks (47) are sleeved in the connecting block (45), the inserting blocks (48) penetrate through the abutting blocks (47) and are inserted in the connecting block (45), the slot (49) is arranged on one side inside the connecting block (45), and the slot (49) is clamped with the inserting block (48).

2. The adjustable-spacing double-ended pipette of claim 1, wherein: connecting pipe (5) and first pipetting head (2) and second pipetting head (3) between all be provided with quick replacement mechanism, quick replacement mechanism includes spacing chamber (61), spacing spring (62), stopper (63) and spacing groove (66), the both sides on first pipetting head (2) and second pipetting head (3) inner wall top are seted up in spacing chamber (61), spacing spring (62) set up the inside in spacing chamber (61), the inside in spacing chamber (61) is established in stopper (63) cover, the both sides in connecting pipe (5) are seted up in spacing groove (66), and spacing groove (66) and second spout (65) block.

3. The adjustable-spacing double-ended pipette as defined in claim 2, wherein: the gear (42) is fixedly connected with a knob (44), and anti-skid grains are formed in the outer side of the knob (44).

4. The adjustable-spacing double-ended pipette as defined in claim 3, wherein: the bottom fixedly connected with first slider (410) that inserted block (48) is close to slot (49) one side, and first slider (410) sliding connection is in the inside of first spout (411), the inside at butt joint piece (47) is seted up in first spout (411), the inside of first spout (411) is provided with second spring (412).

5. The adjustable-spacing double-ended pipette as defined in claim 4, wherein: the both ends that stopper (63) are close to spacing spring (62) one side are all fixedly connected with second slider (64), and second slider (64) sliding connection is in the inside of second spout (65), the both ends in spacing chamber (61) inside are seted up in second spout (65).

6. The adjustable-spacing double-ended pipette of claim 5, wherein: one side of the limiting spring (62) close to the limiting block (63) is fixedly connected with the limiting block (63), and one side of the limiting spring (62) far away from the limiting block (63) is fixedly connected inside the limiting cavity (61).