CN213745326U

CN213745326U - Damping tube and cleaning system

Info

Publication number: CN213745326U
Application number: CN202022485434.9U
Authority: CN
Inventors: 石义康; 陶家亮; 吴勇波; 刘俊来
Original assignee: Shenzhen Reetoo Biotechnology Co Ltd
Current assignee: Shenzhen Reetoo Biotechnology Co Ltd
Priority date: 2020-10-30
Filing date: 2020-10-30
Publication date: 2021-07-20
Anticipated expiration: 2030-10-30

Abstract

The application discloses damping pipe and cleaning system, the soft elastic tube that contracts when inflation, pressure reduce when including first connecting pipe, second connecting pipe and inflow liquid pressure increase, the elastic tube has relative first end and second end, first end and second end through two connect respectively with first connecting pipe and second connecting pipe are connected. When the damping tube is applied to sampling needle outer wall washing pipe-line system, the elastic tube can expand or contract according to the increase or decrease of liquid pressure, thereby effectively eliminating power pump outlet pressure pulsation, and further preventing the generation of liquid splashing in the sampling needle outer wall cleaning process.

Description

Damping tube and cleaning system

Technical Field

The utility model relates to an external diagnosis (IVD for short) instrument field especially relates to a sampling needle cleaning system who is applied to In Vitro Diagnostic instrument.

Background

In the IVD instrument, generally be equipped with and carry out abluent cleaning system to the sampling needle outer wall, this cleaning system is usually including wasing the liquid bucket, wasing pond and waste liquid bucket, and the washing liquid in the washing liquid bucket is carried to the washing pond by first power pump, and the sampling needle washs in wasing the pond, and the waste liquid of wasing the production is carried to the waste liquid bucket by second power pump. However, this piping system has the following disadvantages: during operation, the outlet pressure of the first power pump is pulsed, and the outlet pressure is unstable, so that liquid splashing is easily generated in the flushing process of the sampling needle.

SUMMERY OF THE UTILITY MODEL

The utility model provides a new damping tube and have sampling needle outer wall washing pipe-line system of this damping tube.

The utility model provides a damping tube, the soft elastic tube that expands when liquid pressure increases, contracts when pressure reduces including first connecting pipe, second connecting pipe and inflow, the elastic tube has relative first end and second end, first end and second end through two joints respectively with first connecting pipe and second connecting pipe are connected. When the liquid pressure increases, the elastic tube expands and its inner diameter increases. When the pressure is reduced, the elastic tube contracts and its inner diameter decreases.

Each joint comprises a first joint pipe and a second joint pipe, the first end of the first connecting pipe and the first end of the elastic pipe are respectively sleeved on the first joint pipe and the second joint pipe of one joint, and the second end of the second connecting pipe and the second end of the elastic pipe are respectively sleeved on the first joint pipe and the second joint pipe of the other joint.

The outer diameter of the first joint pipe of one joint is matched with the inner diameter of the first connecting pipe, and the outer diameter of the second joint pipe is matched with the inner diameter of the elastic pipe. The outer diameter of the first joint pipe of the other joint is matched with the inner diameter of the second connecting pipe, and the outer diameter of the second joint pipe is matched with the inner diameter of the elastic pipe. The two connectors may or may not be of uniform size.

In the axial direction of the damping pipe, the first connecting pipe, one joint, the elastic pipe, the other joint and the second connecting pipe are connected in sequence.

Each of the joints further has an intermediate portion between the first joint pipe and the second joint pipe, the intermediate portion having an outer diameter greater than the outer diameters of the first and second joint pipes.

The outer wall of the first joint pipe and the outer wall of the second joint pipe are both convexly provided with anti-falling parts.

The wall thickness of the elastic pipe is smaller than that of the first connecting pipe and that of the second connecting pipe.

The inner diameters of the first connecting pipe and the second connecting pipe are smaller than the inner diameter of the elastic pipe.

The first and second connection tubes may be medical catheters. The elastic tube may be a silicone tube.

The cleaning system comprises a cleaning liquid container, a cleaning container, a waste liquid container and a damping pipe, wherein the cleaning liquid container and the cleaning container are connected through a liquid inlet pipeline, the cleaning container and the waste liquid container are connected through a liquid discharge pipeline, a first power pump is arranged on the liquid inlet pipeline, a second power pump is arranged on the liquid discharge pipeline, and the damping pipe is arranged on the liquid inlet pipeline and is located between the cleaning container and the first power pump.

The liquid inlet pipeline is also provided with a pipeline control component capable of controlling the on-off of the liquid inlet pipeline, and the pipeline control component is positioned between the cleaning container and the damping pipe.

The first power pump is a diaphragm pump. The second powered pump may be a diaphragm pump. The line control means may be a shut-off valve.

The utility model has the advantages that: when the damping tube is applied to sampling needle outer wall washing pipe-line system, the elastic tube can expand or contract according to the increase or decrease of liquid pressure, thereby effectively eliminating power pump outlet pressure pulsation, and further preventing the generation of liquid splashing in the sampling needle outer wall cleaning process.

Drawings

FIG. 1 is a schematic sectional view of a damper tube according to the present embodiment;

fig. 2 is a block diagram showing the structure of the sampling needle outer wall cleaning line system according to the present embodiment.

Detailed Description

Reference will now be made in detail to embodiments of the present patent, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present patent and are not to be construed as limiting the present patent.

In the description of this patent, it is to be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for the convenience of describing the patent and for the simplicity of description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the patent.

In the description of this patent, it is noted that unless otherwise specifically stated or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly and can include, for example, fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed. The specific meaning of the above terms in this patent may be understood by those of ordinary skill in the art as appropriate.

As shown in fig. 1, a damping tube 1 includes a soft first connection tube 11, a soft second connection tube 12, a soft elastic tube 13, and two hard joints, which are respectively defined as a first joint 14 and a second joint 15. The first connecting pipe 11 can be connected to an element located upstream or downstream of the damping pipe, and the second connecting pipe 12 can be connected to an element located downstream or upstream of the damping pipe. The elastic tube 13 is capable of expanding when the pressure of the inflowing liquid increases and contracting when the pressure decreases.

The first connection pipe 11, the elastic pipe 13, the second connection pipe 12, the first joint 14, and the second joint 15 are tubular structures that axially penetrate through. The elastic tube 13 is located between the first connection tube 11 and the second connection tube 12, and the two ends of the elastic tube 13 are a first end 131 and a second end 132, respectively, the first end 131 is fixedly connected with the first connection tube 11 through the first joint 14, and the second end 132 is fixedly connected with the second connection tube 12 through the second joint 15.

When the pressure of the liquid flowing into the damping tube 1 increases, the elastic tube 13 is compressed and expanded, the inner diameter of the elastic tube 13 increases, the flow rate of the liquid decreases, and the liquid pressure decreases, thereby functioning to balance the liquid pressure. When the pressure decreases, the elastic tube 13 contracts, the inner diameter of the elastic tube 13 decreases, the liquid flow rate increases, and the liquid pressure increases.

For the damping tube, the first connection tube 11 and the second connection tube 12 may be made of a soft material, such as rubber or silicone. The elastic tube 13 is made of soft material, which has a soft hardness, a thin wall thickness and a good elasticity, such as silica gel. The first joint 14 and the second joint 15 may be made of a hard material, such as a plastic having a certain hardness.

As shown in fig. 1, a damper tube 1 includes a soft first connection tube 11, a first joint 14, an elastic tube 13, a second joint 15, and a second connection tube 12, which are connected in this order in the axial direction of the damper tube. The first and

second joints

14 and 15 are each a variable diameter tubular body, and each includes a middle portion 16 located in the middle, and a first joint pipe 17 and a second joint pipe 18 located on both sides of the middle portion. The outer diameter of the first joint pipe 17 of the first and

second joints

14 and 15 is matched with the inner diameter of the first and second connecting pipes, respectively. The outer diameter of the second joint pipe 18 of the first and

second joints

14 and 15 matches the inner diameter of the elastic pipe 13. The resilient tube 13 is located between the first connector 14 and the second connector 15 and has opposite first and

second ends

131, 132.

When assembling, the first connecting pipe 11 is tightly sleeved on the first joint pipe 17 of the first joint 14; the first end 131 of the elastic tube is tightly sleeved on the second joint tube 18 of the first joint 14, and the second end 132 of the elastic tube is tightly sleeved on the second joint tube 18 of the second joint 15; the second connection pipe 12 is tightly fitted over the first joint pipe 17 of the second joint 15.

In this embodiment, the first and second joints are reducer joints, and the first joint pipe 17 is fitted to the first and

second connection pipes

11 and 12, and the second joint pipe 18 is fitted to the elastic pipe. The sizes of the first joint and the second joint can be consistent, and at the moment, the sizes of the first connecting pipe and the second connecting pipe can be consistent; of course, the first joint and the second joint may not have the same size, and in this case, the first connection pipe and the second connection pipe may not have the same size. The elastic tube 13 may have an inner diameter greater than that of the first and

second connection tubes

11 and 12, and the first joint tube 17 may have an outer diameter less than that of the second joint tube 18. The wall thickness of the elastic tube 13 may be smaller than the wall thickness of the first and

second connection tubes

11 and 12, so that the elastic tube has better elasticity and is easier to expand or contract.

In the present embodiment, in order to ensure a stable connection between the connection pipe and the elastic pipe, the outer wall of the first joint pipe 17 and the outer wall of the second joint pipe 18 are provided with the coming-off preventing portion 19 in a protruding manner.

As shown in fig. 1 and 2, it is a system for cleaning the outer wall of a sampling needle, which can be applied to an IVD instrument. The cleaning system comprises a cleaning liquid container 2, a first power pump 3, a damping pipe 1, a pipeline control part 4, a cleaning container 5, a second power pump 6 and a waste liquid container 7. The cleaning solution container 2 and the cleaning container 5 are connected by a solution supply line 8, and the cleaning container 5 and the waste solution container 7 are connected by a solution discharge line 9. The first power pump 3, the damper pipe 1, and the pipe control part 4 are sequentially provided on the supply pipe 8. The second power pump 6 is provided on the drain line 9.

The cleaning liquid container 2 can be used to hold a cleaning liquid. The first power pump 3 is capable of providing a power source for delivering the cleaning liquid. The damping tube 1 can be used for eliminating pressure pulsation at the outlet of the first power pump 3 and eliminating the problem of liquid splashing generated when the outer wall of the sampling needle 10 in the cleaning container 5 is cleaned. The line control unit 4 can control the on/off of the liquid supply line 8. The cleaning container 5 can provide a container for cleaning the sampling needle and collect waste liquid generated during cleaning the sampling needle. The sampling needle 10 can suck and inject a sample. The second power pump 6 can be used for waste liquid discharge. The waste liquid container 7 is capable of collecting waste liquid.

The damping tube 1 includes a first connection tube 11, a first joint 14, an elastic tube 13, a second joint 15, and a second connection tube 12, which are connected in sequence. The first connecting pipe 11 is able to convey the washing liquid, which can be connected as an inlet of the damping pipe with an element located upstream of the damping pipe. The first joint 14 is capable of fitting with the first connecting tube 11 and the elastic tube 13. The elastic tube 13 is generally a silicone tube with soft hardness, thin wall thickness and good elasticity. The second joint 15 can be fitted with the second connection pipe 12 and the elastic pipe 13. The second connecting pipe 12 is capable of conveying a cleaning liquid and it is capable of being connected as an outlet of the damping pipe to an element located downstream of the damping pipe.

The cleaning process of the outer wall of the sampling needle is as follows:

the method comprises the following steps: after the sampling of the sampling needle 10 is finished, moving the sampling needle into the cleaning container 5 to clean the needle wall;

step two: the first power pump 3 is started, the pipeline control part 4 is opened, and the cleaning liquid is subjected to pressure stabilization through the damping pipe 1 and enters the cleaning container 5 to clean the outer wall of the sampling needle 10; simultaneously, the second power pump 6 is started to discharge the waste liquid generated in the cleaning process into a waste liquid container 7;

step three: the cleaning process is ended and all components are stopped.

In the present embodiment, the first and second power pumps may be diaphragm pumps. The first and second connecting tubes may be medical tubes. The line control means may be a shut-off valve. The elastic tube can be a silicone tube, and the silicone tube applied to the IVD instrument can be selected

(inner diameter)

(outer diameter), the pipe length of about 100mm specification size, of course, can also be selected according to the requirements for other sizes.

In this embodiment, utilize the elasticity of elasticity pipe better, the characteristic of shrink when pressurized inflation, pressure reduce, install the elasticity pipe at the exit end that is close to first diaphragm pump, when first diaphragm pump annotates the liquid, exit pressure increases, and elasticity pipe pressurized inflation, when first diaphragm pump imbibition, exit pressure reduces, and the elasticity pipe shrink to make continuous imbibition of first diaphragm pump, annotate the liquid in-process, exit pressure reaches relative balance, reaches the effect of eliminating the pulsation.

The foregoing is a more detailed description of the present invention that is presented in conjunction with specific embodiments, and it is not to be understood that the specific embodiments of the present invention are limited to these descriptions. To the utility model belongs to the technical field of ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions or replacement.

Claims

1. The damping tube is characterized by comprising a first connecting tube, a second connecting tube and a soft elastic tube, wherein the soft elastic tube expands when the pressure of inflow liquid is increased and contracts when the pressure is reduced, the elastic tube is provided with a first end and a second end which are opposite, and the first end and the second end are respectively connected with the first connecting tube and the second connecting tube through two joints.

2. The damper tube according to claim 1, wherein each of the joints includes a first joint tube and a second joint tube, first ends of the first connection tube and the elastic tube are respectively fitted over the first joint tube and the second joint tube of one of the joints, and second ends of the second connection tube and the elastic tube are respectively fitted over the first joint tube and the second joint tube of the other of the joints.

3. The damper tube of claim 2, wherein each of the fittings further has an intermediate portion between the first and second fitting tubes, the intermediate portion having an outer diameter greater than the outer diameters of the first and second fitting tubes.

4. The damping pipe according to claim 2, wherein the outer wall of the first joint pipe and the outer wall of the second joint pipe are each provided with a retaining portion in a protruding manner.

5. The damper tube according to claim 1, wherein the elastic tube has a wall thickness smaller than wall thicknesses of the first and second connection tubes.

6. The damping tube according to claim 5, wherein the first and second connection tubes have an inner diameter smaller than an inner diameter of the elastic tube.

7. The damper tube of claim 1, wherein the elastic tube is a silicone tube.

8. A cleaning system comprises a cleaning liquid container, a cleaning container and a waste liquid container, wherein the cleaning liquid container and the cleaning container are connected through a liquid inlet pipeline, the cleaning container and the waste liquid container are connected through a liquid outlet pipeline, a first power pump is arranged on the liquid inlet pipeline, a second power pump is arranged on the liquid outlet pipeline, and the cleaning system is characterized by further comprising a damping pipe according to any one of claims 1 to 7, wherein the damping pipe is arranged on the liquid inlet pipeline and is positioned between the cleaning container and the first power pump.

9. The cleaning system of claim 8, wherein a pipeline control component capable of controlling the on-off of the liquid inlet pipeline is further arranged on the liquid inlet pipeline, and the pipeline control component is positioned between the cleaning container and the damping pipe.

10. The washing system as recited in claim 9 wherein the first powered pump is a diaphragm pump.