CN217688759U - Trace sampling needle with deep cleaning function - Google Patents

Abstract

The utility model discloses a trace advances appearance needle with degree of depth cleaning function, including cylinder, clearance ware and locator, the inner wall of cylinder runs through installs the stock, the clearance ware is installed to the inner wall of stock, the outer wall of stock is encircleed and is installed the rubber circle, the multiunit locator is installed to the inner wall of cylinder. The utility model discloses an install clearance ware and rubber circle and clear up the residual of revolving drum inner wall, when needing to clear up the residual of cylinder inner wall, make slide bar moving position promote the piece removal of exerting pressure, piece moving position that exerts pressure extrudes the gasbag, make the inside gas of gasbag enter into the inside of rubber circle through the blast pipe, can make the volume grow of rubber circle laminate with the inner wall of cylinder mutually after the gas enters into the inside of rubber circle, it moves to stimulate the stock drive rubber circle simultaneously, can clear up the absorbent residual of cylinder inner wall when the rubber circle removes, reach the purpose of carrying out degree of depth clearance to cylinder inner wall residual.

Description

Trace sampling needle with deep cleaning function

Technical Field

The utility model relates to a syringe technical field specifically is a micro syringe with degree of depth cleaning function.

Background

The chromatograph is a device for chromatographic separation and analysis, the modern chromatograph has the characteristics of high stability, sensitivity, versatility, high automation degree and the like, the chromatograph is widely used for analyzing certain content of chemical products and high polymer materials, and the sample injection needle is sampling equipment for assisting the chromatograph to detect, absorbs a trace of samples from a sample bottle and enters the chromatograph for detection.

The existing trace injection needle has the defects that:

patent document CN110031579A discloses a trace advances appearance needle, the right item of protection "includes the cylinder, and the top of cylinder is provided with the piston rod, and the one end fixedly connected with that the piston rod stretches out the cylinder promotes the button, promotes to be provided with the butt joint subassembly on the button, and the cylinder is close to the one end both sides that promote the button and sets up along the holding tank of its symmetry setting, and the inside sliding connection who keeps the tank has the guide subassembly of being connected with the butt joint subassembly. The injection needle can be combined and disassembled with the injection needle, so that the repeated use is realized, the push button on the injection needle is guided when the injection needle is used, the push button and a piston rod connected with the push button are prevented from deflecting, the safety of the injection needle is protected, the force of the piston rod is buffered during injection, the excessive and too fast injection quantity is avoided when the push force is too large, the relative movement of a needle cylinder and the push button is avoided, the quantitative injection is realized, and the outflow of liquid in the injection needle under the action of external force can be avoided when the injection needle is not used. However, the device is inconvenient to use and not easy to clean the residues on the inner wall.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a trace injection needle with degree of depth cleaning function to solve the problem of the inner wall residue clearance of proposing among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a trace sample injection needle with a deep cleaning function comprises a needle cylinder, a cleaner and a positioner, wherein a long rod penetrates through the inner wall of the needle cylinder, and the cleaner is mounted on the inner wall of the long rod;

the cleaning device comprises a cleaner body, a cleaning device and a cleaning device, wherein an air bag is arranged on the inner wall of the cleaner body, a limiting frame is arranged on the outer wall of the air bag, a pressing block is arranged on the other side of the air bag, a sliding rod is arranged on the outer wall of the pressing block, a first spring is arranged on the outer wall of the sliding rod in a surrounding mode, a limiting plate is arranged on the inner wall of the cleaner body, and the limiting plate is located on one side of the air bag;

the outer wall of the long rod is provided with a rubber ring in a surrounding way, and the inner wall of the needle cylinder is provided with a plurality of groups of locators.

Preferably, a needle is mounted at one end of the barrel.

Preferably, one end of the long rod is provided with a piston.

Preferably, the outer wall of gasbag installs the blast pipe, and the outer wall that just one end of blast pipe extends to the rubber circle.

Preferably, the sealing washer is installed to the inner wall of locator, and the inner wall of sealing washer runs through to install spacing axle, and the connecting block is installed to the bottom of spacing axle, and the slide is installed to the bottom of connecting block, and the drive shaft is installed to the bottom of slide, and the inner wall of locator is equipped with two sets of spacing grooves, and the spacing groove is located one side of sealing washer.

Preferably, the spout is installed to the inner wall of slide, and No. two springs are installed to the inner wall of spout, and the stopper is installed to the outer wall of No. two springs.

Preferably, the positioning plate is installed around the stock outer wall, and the positioning plate is located one side of rubber circle.

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

1. the utility model discloses an install clearance ware and rubber circle and clear up the residue of revolving drum inner wall, when needing to clear up the residue of cylinder inner wall, make slide bar shift position promote the piece of exerting pressure and move, the piece shift position of exerting pressure extrudes the gasbag, spacing frame is spacing to the gasbag, make the inside gas of gasbag enter into the inside of rubber circle through the blast pipe, gas can make the volume grow of rubber circle and the inner wall of cylinder laminate mutually after entering into the inside of rubber circle, stimulate the stock simultaneously and drive the rubber circle and move, can clear up the adsorbed residue of cylinder inner wall when the rubber circle moves, reach the purpose of carrying out the degree of depth clearance to cylinder inner wall residue;

2. the utility model discloses an install the locator and can carry out the ration sample, when needing the ration sample, make the drive shaft remove and promote slide shift position, slide shift position promotes the connecting block and removes, the connecting block removes the inside that promotes spacing axle and removes and enter into the cylinder, the slide removes to the inside that No. two springs promoted the stopper and enter into the spacing groove behind certain position simultaneously and carries on spacingly to the position of spacing axle, when the pulling stock takes a sample, spacing axle carries on spacingly through the position of locating plate to the stock, make the stock only can stimulate the piston in certain space and remove, reach the purpose of ration sample.

Drawings

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

FIG. 2 is a schematic cross-sectional view of the present invention;

FIG. 3 is a schematic view of a part of the structure of the cleaner of the present invention;

fig. 4 is a schematic view of a part of the locator according to the present invention.

In the figure: 1. a needle cylinder; 101. a needle head; 2. a long rod; 201. a piston; 3. a cleaner; 301. an air bag; 302. pressing a block; 303. a limiting plate; 304. a slide bar; 305. a first spring; 306. a limiting frame; 4. a rubber ring; 401. an exhaust pipe; 5. a positioner; 501. a seal ring; 502. a limiting shaft; 503. connecting blocks; 504. a slide plate; 505. a drive shaft; 506. a limiting groove; 6. a chute; 601. a second spring; 602. a limiting block; 7. and (7) positioning the plate.

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.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element to which the reference is made must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, and for example, "connected" may be either fixedly connected or detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Please refer to fig. 1 and 2, a micro sample injection needle with deep cleaning function, including a needle cylinder 1, a cleaner 3 and a locator 5, a long rod 2 is installed on an inner wall of the needle cylinder 1 in a penetrating manner, the needle cylinder 1 provides an installation space for the long rod 2, the cleaner 3 is installed on an inner wall of the long rod 2, a rubber ring 4 is installed around an outer wall of the long rod 2, the cleaner 3 can clean residues inside the needle cylinder 1 by volume change of the rubber ring 4, a plurality of sets of locators 5 are installed on an inner wall of the needle cylinder 1, the locator 5 can limit a moving position of the long rod 2, so as to achieve the purpose of quantitative sampling, a needle head 101 is installed at one end of the needle cylinder 1, a piston 201 is installed at one end of the long rod 2, the long rod 2 is pulled to move to the piston 201, when the piston 201 moves, the inside of the needle cylinder 1 becomes a negative pressure state, a sample enters the inside of the needle cylinder 1 through the needle head 101 to be stored, an exhaust pipe 401 is installed on an outer wall of the air bag 301, and one end of the exhaust pipe 401 extends to an outer wall of the rubber ring 4, and air inside of the air bag 301 enters the inside of the rubber ring 4 through the exhaust pipe 401, so as to be attached to the inner wall of the rubber ring 1, and the volume of the rubber ring 4.

Referring to fig. 2 and 3, an air bag 301 is installed on the inner wall of the cleaner 3, a limiting frame 306 is installed on the outer wall of the air bag 301, a pressing block 302 is installed on the other side of the air bag 301, a sliding rod 304 is installed on the outer wall of the pressing block 302, a spring 305 is installed on the outer wall of the sliding rod 304 in a surrounding mode, a limiting plate 303 is installed on the inner wall of the cleaner 3, and the limiting plate 303 is located on one side of the air bag 301.

Referring to fig. 2 and 4, a sealing ring 501 is installed on the inner wall of a positioner 5, a limiting shaft 502 is installed on the inner wall of the sealing ring 501 in a penetrating manner, a connecting block 503 is installed at the bottom of the limiting shaft 502, a sliding plate 504 is installed at the bottom of the connecting block 503, a driving shaft 505 is installed at the bottom of the sliding plate 504, two sets of limiting grooves 506 are formed in the inner wall of the positioner 5, the limiting grooves 506 are located on one side of the sealing ring 501, a sliding groove 6 is installed on the inner wall of the sliding plate 504, a second spring 601 is installed on the inner wall of the sliding groove 6, a limiting block 602 is installed on the outer wall of the second spring 601, a positioning plate 7 is installed on the outer wall of a long rod 2 in a surrounding manner, and the positioning plate 7 is located on one side of a rubber ring 4.

The working principle is that when residues on the inner wall of a syringe 1 need to be cleaned, the sliding rod 304 is moved to push a pressing block 302 to move, the pressing block 302 is moved to extrude an air bag 301, a limiting frame 306 limits the air bag 301, air in the air bag 301 enters the rubber ring 4 through an exhaust pipe 401, the air can enable the size of the rubber ring 4 to be increased to be attached to the inner wall of the syringe 1 after entering the rubber ring 4, meanwhile, a long rod 2 is pulled to drive the rubber ring 4 to move, the residues adsorbed on the inner wall of the syringe 1 can be cleaned when the rubber ring 4 moves, the purpose of deep cleaning of the residues on the inner wall of the syringe 1 is achieved, a limiting plate 303 has a limiting effect on a first spring 305, the first spring 305 can reset the sliding rod 304, when quantitative sampling is needed, a driving shaft 505 is moved to push the moving position of the sliding plate 504, the moving position of the sliding plate 504 pushes the connecting block 503 to move, the limiting shaft 502 is moved to enter the inside of the syringe 1, and the long rod 502 is pulled to move the limiting shaft 502 to a limiting groove 602, and the positioning plate 502 can be pulled to perform quantitative sampling on the long rod 2 in the limiting groove 2, and the positioning plate 502 can be pulled in the limiting groove 2.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims (7)

1. The utility model provides a trace advances a syringe with degree of depth cleaning function, includes cylinder (1), clearance ware (3) and locator (5), its characterized in that: a long rod (2) is installed on the inner wall of the needle cylinder (1) in a penetrating mode, and a cleaner (3) is installed on the inner wall of the long rod (2);

an air bag (301) is installed on the inner wall of the cleaner (3), a limiting frame (306) is installed on the outer wall of the air bag (301), a pressing block (302) is installed on the other side of the air bag (301), a sliding rod (304) is installed on the outer wall of the pressing block (302), a first spring (305) is installed on the outer wall of the sliding rod (304) in a surrounding mode, a limiting plate (303) is installed on the inner wall of the cleaner (3), and the limiting plate (303) is located on one side of the air bag (301);

the outer wall of stock (2) encircles and installs rubber circle (4), multiunit locator (5) are installed to the inner wall of cylinder (1).

2. The microsample injection needle with deep cleaning function of claim 1, wherein: one end of the needle cylinder (1) is provided with a needle head (101).

3. The microsample injection needle with deep cleaning function of claim 1, wherein: one end of the long rod (2) is provided with a piston (201).

4. The micro-quantity sampling needle with the deep cleaning function according to claim 1, characterized in that: an exhaust pipe (401) is installed on the outer wall of the air bag (301), and one end of the exhaust pipe (401) extends to the outer wall of the rubber ring (4).

5. The microsample injection needle with deep cleaning function of claim 1, wherein: sealing washer (501) are installed to the inner wall of locator (5), and spacing axle (502) are installed in the inner wall of sealing washer (501) through installing, and connecting block (503) are installed to the bottom of spacing axle (502), and slide (504) are installed to the bottom of connecting block (503), and drive shaft (505) are installed to the bottom of slide (504), and the inner wall of locator (5) is equipped with two sets of spacing grooves (506), and spacing groove (506) are located one side of sealing washer (501).

6. A microsample injection needle with deep cleaning function according to claim 5, characterized in that: spout (6) are installed to the inner wall of slide (504), and No. two spring (601) are installed to the inner wall of spout (6), and stopper (602) are installed to the outer wall of No. two spring (601).

7. The microsample injection needle with deep cleaning function of claim 1, wherein: the outer wall of the long rod (2) is provided with a positioning plate (7) in a surrounding mode, and the positioning plate (7) is located on one side of the rubber ring (4).

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