CN219200975U

CN219200975U - Sampling device

Info

Publication number: CN219200975U
Application number: CN202223474509.9U
Authority: CN
Inventors: 冯晶
Original assignee: Beijing North Medical District Of Pla General Hospital
Current assignee: Beijing North Medical District Of Pla General Hospital
Priority date: 2022-12-26
Filing date: 2022-12-26
Publication date: 2023-06-16
Anticipated expiration: 2032-12-26

Abstract

The utility model relates to the technical field of sampling devices, in particular to a sampling device which comprises an adsorption tube with a pointed cone part at the bottom and an adsorption assembly arranged at the top of the adsorption tube and used for generating negative pressure in the adsorption tube, wherein the adsorption assembly comprises an annular bottom plate fixedly connected to the top of the adsorption tube, a top plate arranged above the annular bottom plate and a rubber sheet hermetically connected to the side walls of the annular bottom plate and the top plate, a pressing spring is fixedly connected between the annular bottom plate and the top plate, the central position of the annular bottom plate is communicated with the adsorption tube, the problem that the rubber head is weak in softening recovery after long-term use, so that the adsorption force is insufficient can be avoided, and meanwhile, multiple adsorption and sampling can be realized in a one-time sampling process.

Description

Sampling device

Technical Field

The utility model relates to the technical field of sampling devices, in particular to a sampling device.

Background

In medical science detection field, often use the sampler to sample the instillation to the sample liquid, the sampling equipment of using is rubber head burette, it is the adsorption tube that adopts glass or plastics, set up a rubber head at the top of adsorption tube, the in-process of taking a sample is at first pressed the rubber head and is emptied, then press the rubber head and insert the bottom of adsorption tube into the sample liquid, loosen the rubber head, the rubber head resumes deformation, adsorb the sample liquid into the adsorption tube, the problem that prior art exists is, after the rubber at current rubber head burette top is used for a long time because the volatilization corruption of liquid medicine becomes soft, the in-process adsorption power that resumes deformation and adsorb the sample liquid through the adsorption tube is not enough, unable normal use, and current rubber head burette only can adsorb once at the in-process of taking a sample, unable adaptation a large amount of samplings.

Disclosure of Invention

In view of the above problems, an object of the present utility model is to: the utility model provides a sampling device, it can avoid after long-term use rubber head soft recovery deformability weak, leads to the problem of adsorption affinity inadequately, can realize simultaneously that a lot of absorption carries out a large amount of appearance in the in-process of once sampling.

In order to achieve the above purpose, the utility model adopts the technical scheme that: the utility model provides a sampling device, is provided with the absorption pipe of pointed cone portion and sets up at the absorption pipe top be used for producing the absorption subassembly of negative pressure to the absorption pipe inside including the bottom, the setting of fixed connection at the annular bottom plate at absorption pipe top is the roof and sealing connection at the rubber sheet of annular bottom plate and roof lateral wall of annular bottom plate top, fixedly connected with presses the spring between annular bottom plate and the roof, the central point of annular bottom plate puts and the absorption pipe intercommunication.

The beneficial effects of the utility model are as follows: can form an adsorption component through roof, cyclic annular bottom plate and sheet rubber, be close to the annular bottom plate through pressing the roof and can empty, the in-process of the recovery deformation of sheet rubber afterwards for the adsorption tube adsorbs the sample liquid, is provided with between roof and cyclic annular bottom plate and presses the spring, can increase the ability that the sheet rubber resumes deformation, guarantees that it has sufficient adsorption affinity.

In order to enable the pressing top plate to be close to the annular bottom plate, the pressing top plate can be guided to move over against the annular bottom plate, and the emptying effect is guaranteed.

As a further improvement of the above technical scheme: the top of adsorption tube is provided with the mount, the central point of roof puts fixedly connected with guide bar, guide bar runs through the mount and keeps sliding connection with the mount between.

The beneficial effects of this improvement are: the fixing frame and the guide rod are used for guiding the pressing of the top plate, so that the position of the top plate is prevented from shifting in the downward pressing process, and the emptying effect is prevented from being influenced.

In order to enable the sampling device to conduct repeated adsorption in the sampling process, the effect of a large number of samples is achieved.

As a further improvement of the above technical scheme: be provided with the check valve that is used for absorbing the subassembly exhaust on the annular bottom plate, be provided with the rotary valve that control absorption pipe upper and lower intercommunication on the absorption pipe.

The beneficial effect of this improvement: the rotary valve is closed in the process of emptying, the top plate is pressed, air is discharged from the one-way valve, after the emptying is finished, the one-way valve is automatically closed, the rotary valve is opened, the top plate is loosened, the pressing spring and the rubber sheet reset, the adsorption tube is driven to adsorb sample liquid, and a large amount of sample taking can be realized through circulation for many times.

In order to enable the one-way valve to be opened and closed automatically.

As a further improvement of the technical scheme, the one-way valve comprises an exhaust pipe, the inner wall of the exhaust pipe is fixedly connected with a supporting frame, the central position of the supporting frame is slidably connected with a valve rod, the bottom of the valve rod is fixedly connected with a sealing plug for sealing the bottom of the exhaust pipe, the outer surface of the valve rod is sleeved with a reset spring, and two ends of the reset spring are respectively fixedly connected with the sealing plug and the supporting frame.

The beneficial effects of this improvement are: in the evacuation process, the top plate is pressed downwards, the rotary valve is closed, the sealing plug moves downwards under the pressure of gas, the reset spring is lengthened, and after the evacuation is finished, the sealing plug can seal the exhaust pipe under the pulling of the reset spring.

In order to facilitate the determination of the scale of the sample during sampling.

As a further improvement of the scheme, the surface of the adsorption tube is provided with scale marks.

The beneficial effect of this improvement: the capacity of the sample can be read out through the graduation marks.

In order to allow the sorbent tube to hold a sufficient quantity of sample fluid.

As a further improvement of the above scheme, the side wall of the adsorption tube is expanded outwards along the radial direction of the adsorption tube and extends with a liquid storage chamber.

The beneficial effect of this improvement: the liquid storage chamber can enlarge the accommodating space of the adsorption tube.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a cross-sectional view of the present utility model;

FIG. 3 is an enlarged schematic view of the present utility model at A in FIG. 2;

fig. 4 is an enlarged schematic view of the present utility model at B in fig. 3.

In the figure: 1. an adsorption tube; 2. an adsorption assembly; 201. a top plate; 202. an annular bottom plate; 203. a rubber sheet; 204. pressing the spring; 205. a fixing frame; 206. a guide rod; 3. a pointed cone; 4. rotating the valve; 5. a one-way valve; 501. an exhaust pipe; 502. a support frame; 503. a valve stem; 504. a sealing plug; 505. a return spring; 6. scale marks; 7. a liquid storage chamber.

Detailed Description

In order that those skilled in the art may better understand the technical solutions of the present utility model, the following detailed description of the present utility model with reference to the accompanying drawings is provided for exemplary and explanatory purposes only and should not be construed as limiting the scope of the present utility model.

Example 1:

as shown in fig. 1 to 4, a sampling device comprises an adsorption tube 1 with a pointed cone 3 at the bottom and an adsorption assembly 2 arranged at the top of the adsorption tube 1 and used for generating negative pressure inside the adsorption tube 1, wherein the adsorption assembly 2 comprises an annular bottom plate 202 fixedly connected to the top of the adsorption tube 1, a top plate 201 arranged above the annular bottom plate 202 and a rubber sheet 203 hermetically connected to the side walls of the annular bottom plate 202 and the top plate 201, a pressing spring 204 is fixedly connected between the annular bottom plate 202 and the top plate 201, and the central position of the annular bottom plate 202 is communicated with the adsorption tube 1.

Example 2:

as shown in fig. 1 to 4, as a further optimization of the above embodiment, a sampling device includes an adsorption tube 1 with a pointed cone 3 at the bottom and an adsorption assembly 2 disposed at the top of the adsorption tube 1 for generating negative pressure inside the adsorption tube 1, the adsorption assembly 2 includes an annular bottom plate 202 fixedly connected to the top of the adsorption tube 1, a top plate 201 disposed above the annular bottom plate 202, and a rubber sheet 203 sealingly connected to the side walls of the annular bottom plate 202 and the top plate 201, a pressing spring 204 is fixedly connected between the annular bottom plate 202 and the top plate 201, a central position of the annular bottom plate 202 is communicated with the adsorption tube 1, a fixing frame 205 is disposed at the top of the adsorption tube 1, a guide rod 206 is fixedly connected to the central position of the top plate 201, and the guide rod 206 penetrates the fixing frame 205 and is slidingly connected to the fixing frame 205.

Example 3:

as shown in fig. 1 to 4, as a further optimization of the above embodiment, a sampling device includes an adsorption tube 1 with a pointed cone 3 at the bottom and an adsorption assembly 2 disposed at the top of the adsorption tube 1 for generating negative pressure inside the adsorption tube 1, the adsorption assembly 2 includes an annular bottom plate 202 fixedly connected to the top of the adsorption tube 1, a top plate 201 disposed above the annular bottom plate 202, and a rubber sheet 203 sealingly connected to the side walls of the annular bottom plate 202 and the top plate 201, a pressing spring 204 is fixedly connected between the annular bottom plate 202 and the top plate 201, the central position of the annular bottom plate 202 is communicated with the adsorption tube 1, a check valve 5 for exhausting the adsorption assembly 2 is disposed on the annular bottom plate 202, and a rotary valve 4 for controlling the up-down communication of the adsorption tube 1 is disposed on the adsorption tube 1.

Example 4:

as shown in fig. 1 to 4, as a further optimization of the above embodiment, a sampling device includes an adsorption tube 1 with a pointed cone 3 at the bottom and an adsorption assembly 2 disposed at the top of the adsorption tube 1 for generating negative pressure inside the adsorption tube 1, the adsorption assembly 2 includes an annular bottom plate 202 fixedly connected to the top of the adsorption tube 1, a top plate 201 disposed above the annular bottom plate 202, and a rubber sheet 203 sealingly connected to the side walls of the annular bottom plate 202 and the top plate 201, a pressing spring 204 is fixedly connected between the annular bottom plate 202 and the top plate 201, a central position of the annular bottom plate 202 is communicated with the adsorption tube 1, the check valve 5 includes an exhaust pipe 501, a support frame 502 is fixedly connected to an inner wall of the exhaust pipe 501, a valve rod 503 is slidably connected to a central position of the support frame 502, a sealing plug 504 for sealing the bottom of the exhaust pipe 501 is fixedly connected to the bottom of the valve rod 503, a reset spring 505 is sleeved on an outer surface of the valve rod 503, and two ends of the reset spring 505 are fixedly connected to the sealing plug 504 and the support frame 502, respectively.

Example 5:

as shown in fig. 1 to 4, as a further optimization of the above embodiment, a sampling device includes an adsorption tube 1 with a pointed cone 3 at the bottom and an adsorption assembly 2 disposed at the top of the adsorption tube 1 for generating negative pressure inside the adsorption tube 1, the adsorption assembly 2 includes an annular bottom plate 202 fixedly connected to the top of the adsorption tube 1, a top plate 201 disposed above the annular bottom plate 202, and a rubber sheet 203 sealingly connected to the side walls of the annular bottom plate 202 and the top plate 201, a pressing spring 204 is fixedly connected between the annular bottom plate 202 and the top plate 201, the central position of the annular bottom plate 202 is communicated with the adsorption tube 1, and the surface of the adsorption tube 1 is provided with scale marks 6.

Example 6

As shown in fig. 1 to 4, as a further optimization of the above embodiment, a sampling device comprises an adsorption tube 1 with a pointed cone 3 at the bottom and an adsorption assembly 2 arranged at the top of the adsorption tube 1 for generating negative pressure inside the adsorption tube 1, wherein the adsorption assembly 2 comprises an annular bottom plate 202 fixedly connected to the top of the adsorption tube 1, a top plate 201 arranged above the annular bottom plate 202 and a rubber sheet 203 hermetically connected to the side walls of the annular bottom plate 202 and the top plate 201, a pressing spring 204 is fixedly connected between the annular bottom plate 202 and the top plate 201, the central position of the annular bottom plate 202 is communicated with the adsorption tube 1, and the side walls of the adsorption tube 1 are outwardly expanded and extended along the radial direction of the adsorption tube 1 to form a liquid storage chamber 7.

The working principle of the utility model is as follows: firstly, the rotary valve 4 is in a closed state, the top plate 201 is pressed downwards to move towards the direction close to the annular bottom plate 202, the rubber sheet 203 deforms to empty, in the process of emptying, air pushes the sealing plug 504 to move downwards, the reset spring 505 deforms and is then discharged from the exhaust pipe 501, after the air is exhausted, the reset spring 505 resets to drive the sealing plug 504 to seal the exhaust pipe 501, at the moment, the bottom pointed cone 3 of the adsorption pipe 1 is inserted into sample liquid, the rotary valve 4 is opened, the top plate 201 is loosened, the pressing spring 204 and the rubber sheet 203 reset to drive the adsorption pipe 1 to adsorb the sample liquid, and a large amount of sampling can be realized by circulation for a plurality of times. The sample liquid can also stay in the liquid storage chamber 7, and the scale of the sample can be observed through the scale mark 6.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

The principles and embodiments of the present utility model have been described herein with reference to specific examples, the description of which is intended only to facilitate an understanding of the method of the present utility model and its core ideas. The foregoing is merely illustrative of the preferred embodiments of the utility model, and it is noted that there is virtually no limit to the specific structure which may be imposed by those skilled in the art without departing from the spirit of the utility model, and that modifications, adaptations, or variations of the foregoing features may be combined in a suitable manner; such modifications, variations and combinations, or applications of the concepts and aspects of the utility model in other applications without modification, are contemplated as falling within the scope of the utility model.

Claims

1. The utility model provides a sampling device, is provided with adsorption tube (1) of pointed cone portion (3) and sets up at adsorption tube (1) top be used for adsorbing subassembly (2) to the inside negative pressure that produces of adsorption tube (1), its characterized in that: the adsorption component (2) comprises an annular bottom plate (202) fixedly connected to the top of the adsorption pipe (1), a top plate (201) arranged above the annular bottom plate (202) and a rubber sheet (203) which is connected to the side walls of the annular bottom plate (202) and the top plate (201) in a sealing mode, a pressing spring (204) is fixedly connected between the annular bottom plate (202) and the top plate (201), and the central position of the annular bottom plate (202) is communicated with the adsorption pipe (1).

2. A sampling device according to claim 1, wherein: the top of adsorption tube (1) is provided with mount (205), the central point of roof (201) put fixedly connected with guide bar (206), guide bar (206) run through mount (205) and keep sliding connection with between mount (205).

3. A sampling device according to claim 1, wherein: the annular bottom plate (202) is provided with a one-way valve (5) for exhausting the adsorption assembly (2), and the adsorption pipe (1) is provided with a rotary valve (4) for controlling the adsorption pipe (1) to be communicated up and down.

4. A sampling device according to claim 3, wherein: the one-way valve (5) comprises an exhaust pipe (501), a supporting frame (502) is fixedly connected to the inner wall of the exhaust pipe (501), a valve rod (503) is slidably connected to the central position of the supporting frame (502), a sealing plug (504) for sealing the bottom of the exhaust pipe (501) is fixedly connected to the bottom of the valve rod (503), a reset spring (505) is sleeved on the outer surface of the valve rod (503), and two ends of the reset spring (505) are fixedly connected with the sealing plug (504) and the supporting frame (502) respectively.

5. A sampling device according to claim 1, wherein: the surface of the adsorption tube (1) is provided with scale marks (6).

6. A sampling device according to claim 1, wherein: the side wall of the adsorption tube (1) is outwards expanded along the radial direction of the adsorption tube (1) and extends to form a liquid storage chamber (7).