CN210097713U

CN210097713U - Progressive quantitative feeding microsyringe

Info

Publication number: CN210097713U
Application number: CN201920904142.9U
Authority: CN
Inventors: 张丹; 黄文娟; 徐翠莲
Original assignee: Tarim University
Current assignee: Tarim University
Priority date: 2019-06-17
Filing date: 2019-06-17
Publication date: 2020-02-21
Anticipated expiration: 2029-06-17

Abstract

The utility model relates to a trace injector technical field specifically is a trace injector that asymptotic formula ration was given, including a quantification section of thick bamboo and locating support, the inside piston upper surface bonding of a quantification section of thick bamboo has the push rod, and a quantification section of thick bamboo upper surface is equipped with locating support, and the feed liquor cavity has been seted up inside the feed liquor valve body of a quantification section of thick bamboo lower part outer wall, and the flowing back chamber has been seted up inside the conical body of the lower part of a quantification section of thick bamboo, and beneficial effect is: the utility model limits the height of the top ring when rising, namely the height of the piston when rising, and carries out quantitative control on the amount of the test liquid which can be filled in the quantitative cylinder; the sealing ball is arranged in the liquid discharge cavity in the lower part of the quantifying cylinder to control one-way liquid discharge, the sealing ball is arranged in the liquid inlet valve body to control one-way liquid inlet, the sampling and the sample adding in the quantifying cylinder are convenient, and the pollution to the experimental environment is avoided.

Description

Progressive quantitative feeding microsyringe

Technical Field

The utility model relates to a microsampler technical field specifically is a microsampler of asymptotic formula ration feeding.

Background

The microsampler is a common experimental instrument for many disciplines, especially physical qualitative and quantitative detection experiments, and the requirement on detection test precision is high, so that the microsampler needs to be ensured to be capable of accurately and precisely feeding.

Most microsamplers in the market at present depend on manual sampling and manual sampling, and the sampling and sampling processes of the microsampler are required to be repeated, so that the microsampler is complicated, and test liquid samples are easy to drip off to pollute the test environment; and the manual direct sample adding is adopted, so that the added test liquid is easy to be too much or too little, and the test is not accurate.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a trace injector that asymptotic formula ration was fed to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a trace sample injector of asymptotic quantitative feeding comprises a quantitative cylinder and a positioning support, wherein the quantitative cylinder is a cylindrical body, a piston is arranged in the quantitative cylinder, the outer wall of the piston is in matched sliding contact with the inner wall of the quantitative cylinder, a push rod is bonded on the upper surface of the piston and vertically penetrates through the top of the quantitative cylinder upwards, a button is bonded on the upper end of the quantitative cylinder, a top ring is integrally formed in the middle of the push rod, a gantry-shaped positioning support is integrally formed on the upper surface of the quantitative cylinder, the push rod penetrates through the middle of a cross rod of the positioning support, a plurality of pairs of uniformly-arranged positioning grooves are formed in the inner walls of two support legs of the positioning support, a U-shaped positioning clamping piece is arranged on the upper surface close to the top ring, the two sides of the positioning clamping piece are matched and clamped in the positioning grooves formed in the inner sides of the two support legs of the positioning support, and an observation, the lower part outer wall integrated into one piece of a ration section of thick bamboo has the feed liquor valve body, and the feed liquor chamber has been seted up to the inside of feed liquor valve body, is linked together through inlet channel between the inside of feed liquor chamber and a ration section of thick bamboo, and inlet channel hugs closely the inside bottom surface of a ration section of thick bamboo and sets up, and the lateral wall intercommunication in feed liquor chamber has the feed liquor interface, the lower part of a ration section of thick bamboo is the conical body, and the flowing back chamber has been seted up to the conical body inside of the lower part of a ration section of thick bamboo, through flowing back passageway intercommunication.

Preferably, a return spring is connected between the lower surface of the top ring and the upper surface of the quantifying cylinder, and the return spring is sleeved outside the push rod.

Preferably, toughened glass is bonded at the opening of the observation window in a sealing manner, and scale marks are arranged on the surface of the toughened glass.

Preferably, a spherical concave arc surface is arranged at the connecting port of the liquid inlet port and the liquid inlet channel, a sealing ball is arranged close to the spherical arc surface, an elastic sheet is bonded to the upper end of the sealing ball, and the elastic sheet is fixedly inserted above the inner wall of the liquid inlet cavity.

Preferably, the connection port of the liquid discharge cavity and the liquid discharge channel is provided with a spherical concave arc surface, a sealing ball is arranged close to the spherical concave arc surface, one side of the sealing ball is bonded with a spring plate, and the spring plate is fixedly inserted into the side wall of the liquid discharge cavity.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model limits the height of the top ring when rising, namely the height of the piston when rising, and carries out quantitative control on the amount of the test liquid which can be filled in the quantitative cylinder;

2. the utility model discloses be provided with the ball sealer in quantifying section of thick bamboo lower part flowing back intracavity portion, the one-way flowing back of control is provided with the ball sealer in the inside of feed liquor valve body, and the one-way feed liquor of control is convenient to the inside sampling of quantifying section of thick bamboo and application of sample, avoids causing the pollution to experimental environment.

Drawings

FIG. 1 is a schematic view of a half section of the structure of the present invention;

FIG. 2 is a schematic structural view of the present invention;

fig. 3 is a front sectional view of the present invention.

In the figure: the device comprises a dosing cylinder 1, a piston 2, a push rod 3, a positioning support 4, a positioning groove 5, a top ring 6, a positioning clamp 7, an observation window 8, a liquid inlet valve body 9, a liquid inlet cavity 10, a liquid inlet interface 11, a liquid discharge cavity 12, a liquid discharge pipe 13, a sealing ball 14 and an elastic sheet 15.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 to 3, the present invention provides a technical solution: the utility model provides a trace injector that asymptotic formula ration was fed, including quantitative section of thick bamboo 1 and locating support 4, combine fig. 1 and fig. 2 to show, quantitative section of thick bamboo 1 is the drum-shaped body, quantitative section of thick bamboo 1 is inside to be provided with piston 2, the outer wall of piston 2 and the inner wall cooperation sliding contact of quantitative section of thick bamboo 1, the upper surface bonding of piston 2 has the push rod 3 with quantitative section of thick bamboo 1 concentricity, push rod 3 runs through the top of quantitative section of thick bamboo 1, the upper end bonding of quantitative section of thick bamboo 1 has the button, be used for pressing push rod 3, make push rod 3 promote piston 2, the middle part integrated into one piece of push rod 3 has thimble 6, be connected with the answer spring between the lower surface of thimble 6 and the upper surface of quantitative section of thick bamboo 1, the outside at push rod 3 is established to the answer spring cover, under the effect that the thimble 6 upwards promoted at.

Referring to fig. 1 and 3, the outer wall of the quantitative cylinder 1 is provided with an observation window 8 along the axial direction, toughened glass is hermetically bonded at the opening of the observation window 8, the surface of the toughened glass is provided with scale marks, the position of the piston 2 in the quantitative cylinder 1 and the liquid amount of the test liquid can be observed and determined through the observation window 8, the positioning bracket 4 in the shape of a gantry bracket is integrally formed on the upper surface of the quantitative cylinder 1, the push rod 3 penetrates through the middle part of a cross rod of the positioning support 4, a plurality of pairs of positioning grooves 5 which are uniformly arranged are arranged on the inner walls of two support legs of the positioning support 4, a U-shaped positioning clamping piece 7 is arranged on the upper surface which is close to the top ring 6, two sides of the positioning clamping piece 7 are clamped in the positioning grooves 5 which are arranged on the inner sides of the two support legs of the positioning support 4 in a matching way, the positioning clamping piece 7 limits the height of the top ring 6 when the top ring rises, that is, the height of the piston 2 is restricted to be raised, and the amount of the test liquid which can be filled in the measuring cylinder 1 is quantitatively controlled.

Referring to fig. 1 and 3, a liquid inlet valve body 9 is integrally formed on the outer wall of the lower portion of the quantifying cylinder 1, a liquid inlet cavity 10 is formed in the liquid inlet valve body 9, the liquid inlet cavity 10 is communicated with the interior of the quantifying cylinder 1 through a liquid inlet channel, the liquid inlet channel is formed in close contact with the bottom surface of the interior of the quantifying cylinder 1, a liquid inlet interface 11 is communicated with the side wall of the liquid inlet cavity 10, the liquid inlet interface 11 is connected with a storage tank of test liquid through a conduit, the test liquid enters the interior of the quantifying cylinder 1 through the liquid inlet interface 11 and the liquid inlet cavity 10, a spherical concave arc surface is arranged at the connection port of the liquid inlet interface 11 and the liquid inlet channel, a sealing ball 14 is arranged in close contact with the spherical arc surface, an elastic sheet 15 is bonded to the upper end of the sealing ball 14, the elastic sheet 15 is fixedly inserted above the inner wall of the liquid inlet cavity 10, and, when the piston 2 rises upwards, the pressure inside the quantifying cylinder 1 is reduced, and the sealing ball 14 is bounced off at the moment, so that the test liquid is sucked into the quantifying cylinder 1 along the liquid inlet interface 11, and when the piston 2 descends, the sealing ball 14 presses the connecting port of the liquid inlet interface 11 and the liquid inlet channel tightly to prevent the test liquid from flowing back.

Referring to fig. 1 and 3, the lower portion of the quantitative cylinder 1 is a conical body, a liquid discharge cavity 12 is formed in the conical body at the lower portion of the quantitative cylinder 1, the liquid discharge cavity 12 is communicated with the interior of the quantitative cylinder 1 through a liquid discharge channel, the bottom surface of the liquid discharge cavity 12 is communicated with a liquid discharge pipe 13, the liquid discharge pipe 13 is used for discharging test liquid, a connecting port between the liquid discharge cavity 12 and the liquid discharge channel is provided with a spherical concave arc surface, a sealing ball 14 is arranged close to the spherical concave arc surface, an elastic sheet 15 is bonded to one side of the sealing ball 14, the elastic sheet 15 is fixedly inserted into the side wall of the liquid discharge cavity 12, under the elastic force of the elastic sheet 15, the sealing ball 14 is made close to the spherical concave arc surface arranged at the connecting port between the liquid discharge cavity 12 and the liquid discharge channel, when the piston 2 rises, the sealing ball 14 tightly presses the connecting port between the liquid discharge cavity 12 and the liquid discharge channel, the spring 15 is sprung open, and the test solution is pushed from the inside of the measuring cylinder 1 into the discharge chamber 12 and discharged along the discharge pipe 13.

The working principle is as follows: the utility model discloses during operation, through the position of adjusting piston 2, predetermine the cavity that quantitative section of thick bamboo 1 is inside sealed by piston 2, confirm the volume that quantitative section of thick bamboo 1 once added test liquid, after confirming to finish, hug closely the upper surface setting of apical ring 6 with location card 7, and make location card 7 card go into the corresponding constant head tank 5 that the both feet inboard of locating support 4 established; when sampling and sample adding are carried out, the liquid inlet interface 11 is connected with a storage tank storing test liquid through a conduit, during sampling, the piston 2 is enabled to rise upwards from the bottommost part inside the quantifying cylinder 1, the pressure inside the quantifying cylinder 1 is reduced, at the moment, the sealing ball 14 inside the liquid inlet cavity 10 is bounced off, the sealing ball 14 inside the liquid discharging cavity 12 seals the liquid discharging channel, so that the test liquid is sucked into the quantifying cylinder 1 along the liquid inlet interface 11, during sample adding, the amount of the test liquid to be added is preset, so that the test liquid inside the quantifying cylinder 1 only needs to be completely discharged, a button at the upper end of the push rod 3 is pressed, the piston 2 is enabled to be pressed downwards, at the moment, the sealing ball 14 inside the liquid discharging cavity 12 is bounced off, the sealing ball 14 inside the liquid inlet cavity 10 seals the liquid discharging channel, the test liquid passes through the liquid discharging cavity 12 and is discharged from the liquid discharging pipe 13, the top ring 6 is jacked upwards, the push rod 3 and the piston 2 are lifted to enter the sampling process, so that the next sample adding process is facilitated.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a trace injector of asymptotic formula ration feeding, includes quantitative section of thick bamboo (1) and locating support (4), its characterized in that: the quantitative cylinder (1) is a cylindrical body, a piston (2) is arranged inside the quantitative cylinder (1), the outer wall of the piston (2) is in matched sliding contact with the inner wall of the quantitative cylinder (1), a push rod (3) is bonded on the upper surface of the piston (2), the push rod (3) vertically upwards penetrates through the top of the quantitative cylinder (1), a button is bonded on the upper end of the quantitative cylinder (1), a top ring (6) is integrally formed in the middle of the push rod (3), a positioning support (4) in the shape of a gantry support is integrally formed on the upper surface of the quantitative cylinder (1), the push rod (3) penetrates through the middle of a cross rod of the positioning support (4), a plurality of pairs of uniformly arranged positioning grooves (5) are formed in the inner walls of two support legs of the positioning support (4), a positioning clamping piece (7) in the shape of a U shape is arranged on the upper surface close to the top ring (6), and two sides of the positioning clamping piece (7) are matched and clamped in the positioning grooves (5) formed in, observation window (8) have been seted up along axial direction to the outer wall of ration section of thick bamboo (1), the lower part outer wall integrated into one piece of ration section of thick bamboo (1) has feed liquor valve body (9), and feed liquor chamber (10) have been seted up to the inside of feed liquor valve body (9), is linked together through inlet channel between the inside of feed liquor chamber (10) and ration section of thick bamboo (1), and inlet channel hugs closely the bottom surface of ration section of thick bamboo (1) inside and sets up, and the lateral wall intercommunication of feed liquor chamber (10) has feed liquor interface (11), the lower part of ration section of thick bamboo (1) is the conical body, and liquid discharge chamber (12) have been seted up to the conical body inside of the lower part of ration section of thick bamboo (1), through flowing back passageway intercommunication, bottom surface intercommunication fluid-discharge tube (13) of liquid.

2. An asymptotic doser as claimed in claim 1, characterised in that: and a return spring is connected between the lower surface of the top ring (6) and the upper surface of the quantitative cylinder (1), and the return spring is sleeved outside the push rod (3).

3. An asymptotic doser as claimed in claim 1, characterised in that: toughened glass is hermetically bonded at the opening of the observation window (8), and scale marks are arranged on the surface of the toughened glass.

4. An asymptotic doser as claimed in claim 1, characterised in that: the liquid inlet connector (11) is provided with a spherical concave arc surface at the connecting port with the liquid inlet channel, a sealing ball (14) is arranged close to the spherical arc surface, the upper end of the sealing ball (14) is bonded with an elastic sheet (15), and the elastic sheet (15) is fixedly inserted above the inner wall of the liquid inlet cavity (10).

5. An asymptotic doser as claimed in claim 1, characterised in that: a connecting port of the liquid discharge cavity (12) and the liquid discharge channel is provided with a spherical concave arc surface, a sealing ball (14) is arranged close to the spherical concave arc surface, one side of the sealing ball (14) is bonded with an elastic sheet (15), and the elastic sheet (15) is fixedly inserted into the side wall of the liquid discharge cavity (12).