CN214400443U

CN214400443U - Sampling pipe

Info

Publication number: CN214400443U
Application number: CN202022538804.0U
Authority: CN
Inventors: 丁建林; 张敏; 沈宏波; 丁维; 杨蓉
Original assignee: Hangzhou Weice Biotechnology Co ltd
Current assignee: Hangzhou Weice Biotechnology Co ltd
Priority date: 2020-11-05
Filing date: 2020-11-05
Publication date: 2021-10-15
Anticipated expiration: 2030-11-05

Abstract

The utility model discloses a sampling pipe, including the tube cap, and upper portion open-ended pipe shaft, the tube cap can be dismantled with the pipe shaft and link to each other, be equipped with the lip limit that can offset with the upper portion open-ended inner wall of pipe shaft in the tube cap, lip limit and pipe cap lateral wall cooperation centre gripping the upper portion of pipe shaft, lip limit, pipe cap lateral wall and pipe cap top face cooperation form can with the sealed complex sealed face of upper portion opening of pipe shaft, the part of this sealed face with pipe shaft upper portion open-ended outer wall is laminated mutually. The sealing surface is designed in the pipe cover, so that the good sealing performance is kept between the upper opening of the pipe body and the pipe cover, and the liquid in the pipe body can be prevented from leaking even when the air pressure in the pipe body is increased; through the cross section design with the pipe shaft for the cavity ellipse, be convenient for extrude the liquid in the pipe shaft, and expose the spanner in drip hole after increasing the fracture, can improve practical convenience.

Description

Sampling pipe

Technical Field

The utility model belongs to the technical field of detect appurtenance, especially, relate to a sampling pipe.

Background

At present, some epidemics are still more abused globally, such as influenza, hand-foot-and-mouth disease and the like, and particularly, the novel coronavirus (2019-nCoV) which is outbreaked in 19 years seriously endangers human life and affects global economy. The virus sampling tube is widely used for detecting the epidemic diseases, can be used for collecting, storing and transporting virus samples, and can be used for loading the samples on a test card for chromatographic reaction after simple treatment to obtain test results. However, the sampling tube product applied to virus collection at present has some problems, such as poor sealing performance, complex using method, complex steps, more components and the like.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model provides a sampling tube which has good sealing performance and is practical and convenient.

The utility model provides a technical scheme that its technical problem adopted is: the utility model provides a sampling pipe, includes the tube cap, and upper portion open-ended pipe shaft, tube cap and pipe shaft can dismantle continuously, be equipped with the lip limit that can offset with the upper portion open-ended inner wall of pipe shaft in the tube cap, lip limit and pipe cap lateral wall cooperation centre gripping the upper portion of pipe shaft, lip limit, pipe cap lateral wall and pipe cap top end face cooperation form can with the sealed complex sealed face of upper portion opening of pipe shaft, the part of this sealed face with pipe shaft upper portion open-ended outer wall is laminated mutually.

The utility model discloses optimize the tube cap of sampling pipe and tube shaft assembly joint's structure for two at least lateral walls of tube shaft upper portion open-ended are laminated mutually with sealed face and are realized sealedly, and tube shaft upper portion open-ended outer wall is laminated mutually with sealed face moreover, avoids producing the possibility of weeping between tube shaft upper portion opening and the tube cap, guarantees the leakproofness of being connected between tube shaft and the tube cap.

Furthermore, the sealing surface comprises a first acting surface attached to the inner wall of the upper opening of the pipe body, a second acting surface attached to the top end surface of the upper opening of the pipe body, and a third acting surface attached to the outer wall of the upper opening of the pipe body. The sealing surface comprises three acting surfaces which are respectively attached to the inner wall, the outer wall and the top end surface of the upper opening of the pipe body to realize sealing, and good connection sealing performance between the pipe body and the pipe cover can be still ensured even if larger air pressure is formed in the pipe body.

Further, the pipe cover is in threaded connection with the pipe body, and internal threads on the inner wall of the pipe cover are located below the third acting surface; the axial length of the third active surface is less than the axial length of the first active surface. The connection mode of the tube cover and the tube body is simple and stable; the axial length of the lip edge is larger than that of the third acting surface, the projections of a part of the lip edge and the part of the internal thread in the horizontal direction are overlapped, a stable clamping effect is formed between the lip edge and the projection of the internal thread, and the upper opening of the pipe body is prevented from being separated from the sealing surface.

Further, a sleeve with a reduced inner diameter is formed on the pipe cover, the end part of the sleeve extends inwards to form a dropping hole with a reduced inner diameter, a spanner is connected to the dropping hole through a neck part, the spanner is broken by applying external force, and the dropping hole is exposed; the cross section of the neck is in a pentagram shape. The cross section design of neck is convenient for the neck to break away from the sleeve, and convenient operation is laborsaving.

Furthermore, the filter element is further included, a necking with the inner diameter gradually reduced and then gradually increased is formed on the inner wall of the pipe cover, and the filter element is arranged on the upper portion of the necking. The necking structure is simple, the processing is convenient, the necking and the pipe cover are integrally arranged, the axial displacement can not occur, the filter element can be effectively prevented from being separated from the pipe cover, and the assembly of the filter element is simple.

Furthermore, the cross section of the tube body is hollow and oval. The shape design of the tube body is beneficial to fully squeezing and pinching the liquid and the sample in the tube body.

Further, the outer wall of the tube cover forms a thin rib for increasing friction force; the upper portion symmetry of pipe shaft is equipped with two flat surfaces of being convenient for to hold, two flat surfaces are parallel. The thin ribs can increase the friction force when the pipe cover is screwed or unscrewed; the design is established to the planomum and is convenient for grip the pipe shaft and operate, and it is more convenient laborsaving to operate.

Furthermore, the inner bottom surface of the pipe body is in a smooth circular arc shape. The smooth circular arc-shaped inner bottom surface avoids dead angles, and can reduce the detention of filling materials.

Further, the bottom of the pipe body forms a supporting leg which enables the pipe body to be vertical to a horizontal plane. The supporting legs are convenient for the sampling tube to stably stand on a horizontal plane.

Furthermore, be equipped with the sign portion of being convenient for observe inside object volume on the pipe shaft. The volume of the object in the pipe body can be visually observed by the identification part.

The utility model has the advantages that: by designing the sealing surface in the pipe cover, good sealing performance is kept between the upper opening of the pipe body and the pipe cover, and liquid in the pipe body can be prevented from leaking even when the air pressure in the pipe body is increased; through the cross section design with the pipe shaft for the cavity ellipse, be convenient for extrude the liquid in the pipe shaft, and expose the spanner in drip hole after increasing the fracture, can improve practical convenience.

Drawings

Fig. 1 is a perspective view of the present invention.

Fig. 2 is a side view of the present invention.

Fig. 3 is a front view of the present invention.

Fig. 4 is an exploded view of the present invention.

Fig. 5 is a partial sectional view of the present invention.

Fig. 6 is a schematic view of the usage state of the present invention.

Fig. 7 is a front view of the tube body provided by the present invention.

Fig. 8 is a sectional view a-a in fig. 7.

Fig. 9 is a partial cross-sectional view of the pipe cover and the pipe body in a tightened state according to the present invention.

Fig. 10 is a partial cross-sectional view of the pipe cap and pipe body of the present invention in an unthreaded state.

Detailed Description

In order to make the technical solution of the present invention better understood, the following figures in the embodiments of the present invention are combined to clearly and completely describe the technical solution 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 efforts shall belong to the protection scope of the present invention.

As shown in fig. 1-10, a sampling tube comprises a tube cover 1, a tube body 2 with an upper opening, and a filter element 3; the pipe cover 1 and the pipe body 2 are detachably connected, in the embodiment, the pipe cover 1 and the pipe body 2 are in threaded connection, the inner wall of the pipe cover 1 is provided with an internal thread 12, and the outer wall of the upper part of the pipe body 2 is provided with an external thread 20. Still be equipped with lip limit 11 in tube cap 1, when tube body 2 and tube cap 1 assembly connect, lip limit 11 and tube cap 1 lateral wall 18 cooperation centre gripping tube body 2's upper portion, the inner wall of tube body 2's upper portion opening 21 offsets with lip limit 11 outer wall, and the inner wall interference fit of lip limit 11 and upper portion opening 21 plays the sealed effect of strengthening tube cap 1 and tube body 2 promptly.

As shown in fig. 5, the lip 11, the side wall 18 of the cap 1 and the top end surface 19 of the cap 1 cooperate to form a sealing surface 4 that can be sealingly engaged with the upper opening 21 of the body 2, and a portion of the sealing surface 4 engages with the outer wall of the upper opening 21 of the body 2 to form a seal.

Specifically, as shown in fig. 9 and 10, the sealing surface 4 includes a first operation surface 41 that is in contact with the inner wall of the upper opening 21 of the pipe body 2, a second operation surface 42 that is in contact with the distal end surface 23 of the upper opening 21 of the pipe body 2, and a third operation surface 43 that is in contact with the outer wall of the upper opening 21 of the pipe body 2, and the female screw 12 on the inner wall of the cap 1 is located below the third operation surface 43. That is to say, the axial length of the third active surface 43 is smaller than the axial length of the first active surface 41, and at least part of the lip 11 coincides with the projection of the internal thread 12 in the horizontal direction. Of course, in other embodiments, the axial length of the third active surface 43 may be greater than or equal to the axial length of the first active surface 41.

The top end surface 23 of the upper opening 21 of the tube body 2 is a horizontal plane, and the second acting surface 42 is a horizontal plane parallel to the top end surface 23 of the upper opening 21 of the tube body 2; if the outer wall of the upper opening 21 of the tubular body 2 is a vertical plane perpendicular to the distal end surface 23, the third acting surface 43 is a vertical plane in contact with the outer wall of the upper opening 21 of the tubular body 2, and if the outer wall of the upper opening 21 of the tubular body 2 is an inclined surface extending from the bottom to the top and from the outside to the inside, the third acting surface 43 is an inclined surface having the same inclination direction and inclination angle as those of the outer wall; the inner wall of the upper opening 21 of the pipe body 2 is a vertical plane perpendicular to the distal end surface 23, and the first operation surface 41 is a vertical plane in contact with the inner wall of the upper opening 21 of the pipe body 2. When shaft 2 and tube cap 1 are screwed up, first active surface 41, second active surface 42 and third active surface 43 laminate with the three face of 2 upper portion openings 21 of shaft respectively for shaft 2 and tube cap 1 form closed seal chamber, and liquid in the shaft 2 can not flow out, even when sampling pipe internal gas pressure is greater than external atmospheric pressure, sealed face 4 can prevent the outside expansion of the upper portion opening 21 of shaft 2 and displacement, thereby improves the leakproofness of tube cap 1 and shaft 2.

The outer surface of the tube cover 1 is provided with dense thin ribs 10 which can increase the friction force when screwing or unscrewing the tube cover 1; on the upper portion of pipe shaft 2, with the below of the pipe shaft 2 upper portion open-ended external screw thread 20 corresponding position, the front and back symmetry sets up two flat surfaces 24, and these two flat surfaces 24 convenient to use person grip and operate, and two flat surfaces 24 are parallel to each other, and the area is great, the comfort level of feeling when having increased handheld sampling pipe, and the operation when screwing up or unscrewing the tube cap is more laborsaving. The flat surface 24 may be provided with a thin rib for increasing the frictional force during operation.

The filter element 3 serves to filter impurities in the sample liquid and the sample so that the extruded droplets efficiently chromatographically react on the test card. In order to facilitate the assembly of the filter element 3, a sleeve 13 with a reduced inner diameter is formed on the tube cover 1, the filter element 3 is arranged in the sleeve 13, and the filter element 3 is made of a material with certain elastic deformation so as to be smoothly arranged in the tube cover 1. The inner wall of the pipe cover 1 is provided with a necking 14 with the inner diameter gradually reduced and then gradually increased, the necking 14 and the pipe cover 1 are integrally structured, the necking 14 surrounds the inner ring of the pipe cover 1 for a circle, the filter element 3 is pressed against the closed end of the sleeve 13, and the position of the filter element 3 can be limited to be kept on the upper part of the necking 14 on the premise of not influencing the outflow of liquid. Of course, in other embodiments, the necking 14 may not be arranged around the circumference, but may be arranged intermittently in the circumferential direction, and the shape may be changed as long as the function of limiting the filter element 3 is achieved.

As shown in fig. 6, a dropping hole 15 with a reduced inner diameter is formed at the end of the sleeve 13 extending inwards, a wrench 17 is connected to the dropping hole 15 through a neck 16, the outer diameter of the neck 16 is smaller than the outer dimensions of the sleeve 13 and the wrench 17, when the wrench 17 is removed by applying an external force, the neck 16 is separated from the sleeve 13, and the dropping hole 15 is exposed, so that the liquid in the pipe body 2 can be filtered after being filtered by the filter element 3.

In order to allow easy separation of the neck 16 from the sleeve 13, the neck 16 is of a relatively thin material thickness, while the cross-section of the neck 16 may be a pentagram, which, when the neck 16 is of a pentagram shape, makes it easier to break the neck 16 due to increased stress at the corners of the neck 16, although the neck 16 may also be of a circular, triangular, polygonal shape, etc. The material of the neck portion 16 and the drip hole 15 is preferably a material having poor flexibility such as ABS, PC, PP, etc. so that when the neck portion 16 is broken by hand, the broken portion does not stick to the material and the drip hole 15 is smoothly exposed.

The neck 16 is broken by breaking the wrench 17 with a hand, the pipe cap 1 is exposed out of the dropping hole 15 after the breaking, the pipe body 2 is extruded by external force, and liquid in the pipe body 2 can flow out of the sampling pipe through the dropping hole 15. The tube body 2 is made of soft plastics, such as low-pressure polyethylene, polypropylene and the like, and can be squeezed and pinched by external force, for the convenience of squeezing and pinching, as shown in fig. 8, the cross section of the tube body 2 is hollow and oval, so that the problems that sampling tubes with more circular cross sections on the market are difficult to squeeze and pinch and are not easy to squeeze and pinch fully can be solved, and the liquid and the samples of the tube body 2 can be squeezed and pinched fully.

The tube body 2 is transparent so as to observe the volume of the filling material in the tube body 2, and meanwhile, in order to more visually see the volume, the tube body 2 is provided with a mark part 27 which specifically comprises an upper limit mark pattern 272 and a lower limit mark pattern 271 as shown in fig. 3, wherein the area between the upper limit mark pattern 272 and the lower limit mark pattern 271 is in a semitransparent matte shape and is used for reference of the volume range of the filling material in the tube so as to identify the volume of the filling material; the transparent tube body 2 can be provided with scales or other patterns which can replace the functions of the scales so as to identify the volume of the filling materials.

The inner bottom surface 25 of the tube body 2 is smooth and circular arc-shaped, so that dead angles possibly generated when the tube body is flat-bottomed can be avoided, and the retention of filling materials can be reduced. The supporting legs 26 are arranged outside the bottom of the tube body 2, the number of the supporting legs 26 is not limited, and the tube body 2 or the sampling tube can be conveniently and stably erected on a horizontal plane; the lower end of the bottom of the tube body 2 can be a plane bottom to surround the arc-shaped bottom, so that the tube body 2 or the sampling tube can be conveniently and stably erected on a horizontal plane.

The above detailed description is provided for illustrative purposes, and is not intended to limit the present invention, and any modifications and variations of the present invention are within the spirit and scope of the following claims.

Claims

1. The utility model provides a sampling pipe, includes tube cap (1) to reach upper portion open-ended pipe shaft (2), tube cap (1) and pipe shaft (2) can be dismantled and link to each other, be equipped with lip limit (11) that can offset with the inner wall of the upper portion opening (21) of pipe shaft (2) in tube cap (1), its characterized in that: the lip edge (11) and the side wall (18) of the tube cover (1) are matched to clamp the upper part of the tube body (2), the lip edge (11), the side wall (18) of the tube cover (1) and the top end surface (19) of the tube cover (1) are matched to form a sealing surface (4) which can be in sealing fit with an upper opening (21) of the tube body (2), and part of the sealing surface (4) is attached to the outer wall of the upper opening (21) of the tube body (2).

2. The sampling tube of claim 1, wherein: the sealing surface (4) comprises a first acting surface (41) attached to the inner wall of the upper opening (21) of the pipe body (2), a second acting surface (42) attached to the top end surface (23) of the upper opening (21) of the pipe body (2), and a third acting surface (43) attached to the outer wall of the upper opening (21) of the pipe body (2).

3. The sampling tube of claim 2, wherein: the pipe cover (1) is in threaded connection with the pipe body (2), and the internal thread (12) of the inner wall of the pipe cover (1) is positioned below the third acting surface (43); the axial length of the third active surface (43) is smaller than the axial length of the first active surface (41).

4. The sampling tube of claim 1, wherein: the pipe cover (1) is provided with a sleeve (13) with a reduced inner diameter, the end part of the sleeve (13) extends inwards to form a dropping hole (15) with a reduced inner diameter, the dropping hole (15) is connected with a wrench (17) through a neck part (16), the wrench (17) is broken when external force is applied, and the dropping hole (15) is exposed.

5. The sampling tube of claim 1, wherein: the pipe cover is characterized by further comprising a filter element (3), wherein a necking opening (14) with the inner diameter gradually reduced and then gradually increased is formed in the inner wall of the pipe cover (1), and the filter element is arranged on the upper portion of the necking opening (14).

6. The sampling tube of claim 1, wherein: the cross section of the tube body (2) is hollow and oval.

7. The sampling tube of claim 1, wherein: the outer wall of the pipe cover (1) is provided with a thin rib (10) for increasing friction force; two flat surfaces (24) convenient to hold are symmetrically arranged at the upper part of the tube body (2), and the two flat surfaces (24) are parallel.

8. The sampling tube of claim 1, wherein: the inner bottom surface (25) of the pipe body (2) is in a smooth circular arc shape.

9. The sampling tube of claim 1 or 8, wherein: the bottom of the pipe body (2) forms a supporting leg (26) which enables the pipe body (2) to be vertical to the horizontal plane.

10. The sampling tube of claim 1, wherein: be equipped with on pipe shaft (2) and be convenient for observe inside object volumetric sign portion (27).