CN218979771U

CN218979771U - Multi-range accurate liquid suction injector

Info

Publication number: CN218979771U
Application number: CN202222743851.8U
Authority: CN
Inventors: 王槐瑞; 于艳玲; 徐新山; 李登英; 刘美娟; 郭静; 陈国举
Original assignee: Jinchuan Group Co Ltd
Current assignee: Jinchuan Group Co Ltd
Priority date: 2022-10-18
Filing date: 2022-10-18
Publication date: 2023-05-09
Anticipated expiration: 2032-10-18

Abstract

The utility model belongs to the field of injection equipment, and particularly relates to a multi-range accurate liquid suction injector. The specific technical scheme is as follows: the injection device comprises an injection cylinder and a piston which are matched, wherein a piston rod is arranged at one end of the piston, the other end of the piston rod penetrates through the injection cylinder and is connected with a limiting frame, a shell is arranged on the periphery of the injection cylinder, a limiting cavity is formed between the outer side wall of the injection cylinder and the inner side wall of the shell, the lower end of the limiting frame is sleeved into the limiting cavity, and a limiting assembly is arranged on the side wall of the shell. One of the positioning components is selected to limit the piston rod according to actual needs, so that liquid is quantitatively obtained. The same injector can quantitatively absorb liquid with different capacities, and has strong adaptability and wide application range.

Description

Multi-range accurate liquid suction injector

Technical Field

The utility model belongs to the field of injection equipment, and particularly relates to a multi-range accurate liquid suction injector.

Background

In hospitals or laboratories, it is often necessary to use syringes to aspirate a quantity of liquid from an injection bottle or other container. In the process of sucking liquid, the piston is not only slowly pulled out, but also the volume of the sucked liquid needs to be controlled by observing the position of the piston of the syringe in the injection cylinder. The liquid is roughly read and sucked according to the scales on the injection cylinder, so that the situation that the sucked liquid medicine is too much or too little is easy to occur. And the quantitative liquid medicine can be obtained only by frequent suction for many times, so that the accuracy of the medicine dosage is difficult to ensure.

Therefore, aiming at the technical problems, the research and development of the multi-range accurate liquid suction injector is very necessary, and the multi-range accurate liquid suction injector is particularly suitable for occasions with large workload and needs to repeatedly suck quantitative liquid for many times, and has excellent industrial application prospect.

Disclosure of Invention

In order to solve the technical problems in the background technology, the utility model provides a multi-range accurate liquid suction injector.

In order to achieve the aim of the utility model, the utility model adopts the following technical scheme: the utility model provides an accurate imbibition syringe of multiscale, includes the injection tube and the piston of adaptation, piston one end is provided with the piston rod, the piston rod other end passes the injection tube and is connected with the spacing, the injection tube periphery is provided with the shell, the injection tube lateral wall with spacing chamber between the shell inside wall, spacing lower extreme embolias spacing intracavity, be provided with spacing subassembly on the shell lateral wall, spacing in spacing intracavity position is restricted to spacing subassembly.

Preferably: the side wall of the shell is provided with a through hole, the limiting assembly comprises a limiting rod which is arranged in the through hole in a sliding manner, and one end of the limiting rod extends out of the side wall of the shell and is connected with a handle; the limiting frame is characterized in that a first limiting block is arranged at the lower end of the limiting frame, and when limiting, one end, far away from the handle, of the limiting rod stretches into the limiting cavity to prop against the first limiting block.

Preferably: the shell is characterized in that a first chute matched with the first limiting block is formed in the inner side wall of the shell, and the first limiting block slides in the first chute.

Preferably: the shell is characterized in that a first limit groove is formed in the side wall of the shell and located in the through hole, the limit assembly further comprises a first groove formed in the side wall of the limit rod, a first spring in a compressed state is arranged in the first groove, and a second limit block matched with the first limit groove is arranged at one end of the first spring.

Preferably: a second groove is formed in the limiting rod along the axial direction of the limiting rod, the second groove is communicated with the first groove to form an L-shaped through hole, and a pull rod is slidably arranged in the second groove; one end of the first spring, which is far away from the second limiting block, is provided with a squeezing block.

Preferably: the contact surface between one end of the pull rod, which is close to the first groove, and the extrusion block is an inclined surface.

Preferably: the second sliding groove is formed in the inner side wall of the second groove, and a first sliding block matched with the second sliding groove is arranged on the periphery of the pull rod.

Preferably: the through hole is characterized in that a third sliding groove is formed in the inner side wall of the through hole, and a second sliding block matched with the third sliding groove is arranged on the periphery of the limiting rod.

Preferably: one end, far away from the first limiting block, on the inner side wall of the through hole is provided with a stop block.

Preferably: the shell is characterized in that a second limiting groove is formed in the inner side wall of the shell, and a third limiting block matched with the second limiting groove is arranged on the outer side wall of the limiting frame.

The utility model has the following beneficial effects:

through fixed connection spacing on the piston rod, the syringe periphery sets up the shell, and spacing lower extreme can slide along with the piston rod from top to bottom in spacing intracavity, sets up one or more sets of spacing subassembly on the shell, and spacing subassembly restriction mount is in spacing intracavity position to the position of restriction piston rod in the syringe removes is quantitative to draw the accurate liquid of volume. When the multi-group limiting assembly is arranged, the limiting assembly can be arranged at the scales of 10mL, 20mL, 30mL and 40mL, liquid with the volume of 10mL, 20mL, 30mL and 40mL is quantitatively absorbed, one of the positioning assemblies is selected to limit the piston rod according to actual needs, and therefore the liquid is quantitatively and accurately absorbed. The same injector can accurately absorb liquid with different capacities, and has strong adaptability and wide application range.

Drawings

FIG. 1 is a schematic diagram of the overall structure of a quantitative liquid suction syringe according to the present utility model;

FIG. 2 is a schematic view of the partial structure of the A in FIG. 1 (limiting state of the limiting assembly);

fig. 3 is a schematic view of the partial structure of B in fig. 1 (non-limiting state of the limiting assembly).

In the figure: the injection device comprises a shell 1, a limiting frame 2, an injection cylinder 3, a piston rod 4, a piston 5, a sealing ring 6, a second limiting groove 7, a third limiting block 8, a limiting cavity 9, a pull rod 10, a through hole 11, a limiting rod 12, a first limiting groove 13, a second limiting block 14, a first spring 15, a first groove 16, a stop block 17, a first sliding block 18, a second sliding groove 19, a pressing block 20, a first sliding groove 21, a first limiting block 22, a second groove 23, a second sliding block 24 and a third sliding groove 25.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. The technical means used in the examples are conventional means well known to those skilled in the art unless otherwise indicated.

In the description of the present utility model, it should be understood that the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present utility model, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

The utility model discloses a multi-range accurate liquid suction injector, which is shown in fig. 1-3, and comprises an adaptive injection cylinder 3 and a piston, wherein one end of the piston is provided with a piston rod 4, the other end of the piston rod 4 penetrates through the injection cylinder 3 and is connected with a limiting frame 2, and the limiting frame 2 is fixedly connected with the upper end of the piston rod 4 and moves along with the piston rod 4. In order to ensure the tightness between the piston and the injection cylinder 3, a sealing ring 6 is arranged at the periphery of the piston. The outer periphery of the injection cylinder 3 is provided with a shell 1, a limiting cavity 9 is formed between the outer side wall of the injection cylinder 3 and the inner side wall of the shell 1, the lower end of the limiting frame 2 is sleeved into the limiting cavity 9, the side wall of the shell 1 is provided with a limiting component, and the limiting component limits the position of the limiting frame 2 in the limiting cavity 9. Because the limiting frame 2 is fixedly connected with the piston rod 4, the position of the limiting frame 2 in the limiting cavity 9, namely the position of the piston rod 4 in the injection cylinder 3, is limited, so that the liquid is quantitatively and accurately sucked. A group of limiting components can be arranged on the side wall of the shell 1, and corresponding liquid can be quantitatively absorbed by arranging a plurality of groups of limiting components at the positions with the capacities of 10mL, 20mL, 30mL and 40 mL. One of the positioning components is selected to limit the piston rod according to actual needs, so that liquid is quantitatively and accurately sucked. The same injector can accurately absorb liquid with different capacities, and has strong adaptability and wide application range.

The side wall of the shell 1 is provided with a through hole 11, the limiting component is arranged in the through hole 11 in a sliding manner, and when limiting, the limiting component stretches into the limiting cavity 9 to prop against the lower end of the limiting frame 2, so that the position of the limiting frame 2 is limited; when the limiting assembly is not required to be limited, the limiting assembly is retracted into the through hole 11, and the limiting frame 2 slides up and down in the limiting cavity 9 along with the piston rod 4. The limiting component comprises a limiting rod 12 which is arranged in the through hole 11 in a sliding mode, and one end, far away from the piston rod 4, of the limiting rod 12 extends out of the side wall of the shell 1 and is connected with a handle. The lower end of the limiting frame 2 is fixedly provided with a first limiting block 22, and during limiting, one end of the limiting rod 12, far away from the handle, stretches into the limiting cavity 9 to be propped against the first limiting block 22, specifically, the limiting rod 12 is located on the first limiting block 22 and is used for limiting the fixing frame to continuously move upwards.

The shell 1 is provided with a first limit groove 13 on the side wall and in the through hole 11, the limit component further comprises a first groove 16 arranged on the side wall of the limit rod 12, a first spring 15 in a compressed state is arranged in the first groove 16, and one end of the first spring 15 is fixedly provided with a second limit block 14 matched with the first limit groove 13. In order to facilitate the outward pulling of the limiting rod 12, the side of the second limiting block 14 away from the limiting cavity 9 is a cambered surface, and the side of the first limiting groove 13 away from the limiting cavity 9 is a cambered surface correspondingly; one side of the second limiting block 14 and one side of the first limiting groove 13, which are close to the limiting cavity 9, are vertical planes. The first spring 15 is always in a compressed state, both in the limit state and in the non-limit state.

The second groove 23 is formed in the limiting rod 12 along the axis direction of the limiting rod 12, the second groove 23 is communicated with the first groove 16 to form an L-shaped through hole 11, the pull rod 10 is slidably arranged in the second groove 23, and one end, far away from the piston rod 4, of the pull rod 10 is provided with the handle. An extrusion block 20 is fixedly arranged at one end of the first spring 15 far away from the second limiting block 14. During limiting, the pull rod 10 is pushed into the second groove 23 in the limiting rod 12, the pull rod 10 abuts against the extrusion block 20, and one end, far away from the handle, of the limiting rod 12 is pushed into the limiting cavity 9; simultaneously, the pull rod 10 presses the pressing block 20, and the pressing block 20 moves upwards in the first groove 16 to press the first spring 15, so that the second limiting block 14 is tightly pressed into the first limiting groove 13.

In order to make the pull rod 10 press the pressing block 20 better, the contact surface between the end of the pull rod 10 close to the first groove 16 and the pressing block 20 is an inclined surface.

In order to limit the position of the pull rod 10 in the second groove 23, so that the pull rod 10 is not separated from the limiting rod 12, a second sliding groove 19 is formed in the inner side wall of the second groove 23, a first sliding block 18 matched with the second sliding groove 19 is arranged on the periphery of the pull rod 10, and the first sliding block 18 can slide back and forth in the second sliding groove 19.

In order to enable the second limiting block 14 to fall into the first limiting groove 13 accurately, a third sliding groove 25 is formed in the inner side wall of the through hole 11, and a second sliding block 24 matched with the third sliding groove 25 is arranged on the periphery of the limiting rod 12, so that the position of the limiting rod 12 in the inner circumferential direction of the through hole 11 is limited.

In order to prevent the stop rod 12 from being separated from the through hole 11, a stop block 17 is disposed on an inner side wall of the through hole 11 at an end far away from the first stop block 22.

In order to enable the first limiting block 22 and the limiting component to be accurately positioned, the limiting frame 2 is guaranteed not to move in the circumferential direction in the limiting cavity 9, a first sliding groove 21 matched with the first limiting block 22 is formed in the inner side wall of the shell 1, and the first limiting block 22 slides in the first sliding groove 21. The shell 1 is provided with a second limit groove 7 on the inner side wall, a third limit block 8 matched with the second limit groove 7 is arranged on the outer side wall of the limit frame 2, and the third limit block 8 can slide up and down in the second limit groove 7. By providing the first chute 21 and the second limit groove 7, the position of the limit frame 2 in the inner circumferential direction of the limit cavity 9 is limited.

The above embodiments are only illustrative of the preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model, and various modifications, variations, alterations, substitutions made by those skilled in the art to the technical solution of the present utility model should fall within the protection scope defined by the claims of the present utility model without departing from the spirit of the design of the present utility model.

Claims

1. The utility model provides an accurate imbibition syringe of multiscale, includes injection tube (3) and piston (5) of adaptation, piston (5) one end is provided with piston rod (4), its characterized in that: the piston rod (4) other end passes injection tube (3) and is connected with spacing (2), injection tube (3) periphery is provided with shell (1), injection tube (3) lateral wall with be spacing chamber (9) between shell (1) inside wall, spacing (2) lower extreme embolias in spacing chamber (9), be provided with spacing subassembly on shell (1) lateral wall, spacing (2) the position in spacing chamber (9) of spacing subassembly restriction.

2. A multi-range accurate liquid suction syringe according to claim 1, wherein: the side wall of the shell (1) is provided with a through hole (11), the limiting component comprises a limiting rod (12) arranged in the through hole (11), and one end of the limiting rod (12) extends out of the side wall of the shell (1) and is connected with a handle; the lower end of the limiting frame (2) is provided with a first limiting block (22), and when limiting, one end of the limiting rod (12) far away from the handle stretches into the limiting cavity (9) to prop against the first limiting block (22).

3. A multi-range accurate liquid suction syringe according to claim 2, wherein: the novel sliding device is characterized in that a first sliding groove (21) matched with the first limiting block (22) is formed in the inner side wall of the shell (1), and the first limiting block (22) slides in the first sliding groove (21).

4. A multi-range accurate liquid suction syringe according to claim 2, wherein: the novel limiting device is characterized in that a first limiting groove (13) is formed in the side wall of the shell (1) and located in the through hole (11), the limiting assembly further comprises a first groove (16) formed in the side wall of the limiting rod (12), a first spring (15) in a compressed state is arranged in the first groove (16), and a second limiting block (14) matched with the first limiting groove (13) is arranged at one end of the first spring (15).

5. A multi-range accurate liquid suction syringe according to claim 4 wherein: a second groove (23) is formed in the limiting rod (12) along the axial direction of the limiting rod, the second groove (23) is communicated with the first groove (16) to form an L-shaped through hole, and a pull rod (10) is arranged in the second groove (23) in a sliding mode; one end of the first spring (15) far away from the second limiting block (14) is provided with a squeezing block (20).

6. A multi-range accurate liquid suction syringe according to claim 5 wherein: the contact surface of one end, close to the first groove (16), of the pull rod (10) and the extrusion block (20) is an inclined surface.

7. A multi-range accurate liquid suction syringe according to claim 6 wherein: the inner side wall of the second groove (23) is provided with a second sliding groove (19), and the periphery of the pull rod (10) is provided with a first sliding block (18) matched with the second sliding groove (19).

8. A multi-range accurate liquid suction syringe according to claim 2, wherein: the inner side wall of the through hole (11) is provided with a third sliding groove (25), and the periphery of the limiting rod (12) is provided with a second sliding block (24) which is matched with the third sliding groove (25).

9. A multi-range accurate liquid suction syringe according to claim 2, wherein: one end, far away from the first limiting block (22), of the inner side wall of the through hole (11) is provided with a stop block (17).

10. A multi-range accurate liquid suction syringe according to claim 1, wherein: the novel anti-theft device is characterized in that a second limiting groove (7) is formed in the inner side wall of the shell (1), and a third limiting block (8) matched with the second limiting groove (7) is arranged on the outer side wall of the limiting frame (2).