CN218262494U

CN218262494U - Sampling pipe that leakproofness is good

Info

Publication number: CN218262494U
Application number: CN202221952613.1U
Authority: CN
Inventors: 童京京; 刘淑莉; 曲径; 赵瑞瑞; 李博茹; 刘勋; 朱怡倩; 刘瑞娜
Original assignee: Xinxiang Huazhiyuan Biotechnology Co ltd
Current assignee: Xinxiang Huazhiyuan Biotechnology Co ltd
Priority date: 2022-07-27
Filing date: 2022-07-27
Publication date: 2023-01-10
Anticipated expiration: 2032-07-27

Abstract

The utility model discloses a sampling pipe that leakproofness is good relates to nucleic acid sampling pipe technical field, including body, tube cap, be equipped with the gasket in the tube cap, the mouth of pipe outside of body is equipped with the L shape groove, the inner wall of tube cap is equipped with L shape trip, L shape trip figure is the same in the L shape groove, L shape trip can insert L shape groove and rotation downwards, makes L shape trip, L shape groove meshing, the corner in L shape groove is equipped with the limiting plate, the limiting plate is used for making the lower extreme of L shape trip take place elastic deformation, the lower extreme of L shape trip is equipped with hemispherical bump, works as when L shape trip, L shape groove meshing, the vertical section, the bump of L shape trip are located the limiting plate both sides. The utility model discloses a cooperation realization of L shape groove, L shape trip is sealed to make the tube cap compress tightly through the limiting plate, only need when sealed with the tube cap small-angle rotation can, can solve and be difficult to guarantee the problem that the sampling pipe is well sealed in big batch nucleic acid collection work.

Description

Sampling pipe that leakproofness is good

Technical Field

The utility model relates to a nucleic acid sampling pipe technical field specifically is a sampling pipe that leakproofness is good.

Background

Sampling pipe is the great consumptive material of consumption ratio in the nucleic acid testing work, and present most sampling pipe is the spiral mouth, and the tube cap inboard is equipped with the gasket, need screw the tube cap after the sample of packing into and make the bottleneck sticiss on the gasket and guarantee sealedly. Such a sealing method has the following problems: need rotatory number of turns more when screwing on the tube cap, operating personnel is difficult to hold the required number of turns of screwing, and the gasket is inboard at the tube cap, also is difficult to judge whether compress tightly the gasket through the mode of observing, and in the work of gathering big batch nucleic acid, a staff need gather hundreds of pipes nucleic acid sample every day, the condition that the number of turns is not enough appears inevitably.

Patent application No. CN202020949100.X provides a good virus sampling pipe of leakproofness, realize once sealedly through gasket and sampling pipe body inner wall in close contact with, the pipe cap screws with the sampling pipe body and realizes the secondary seal, it forms the cubic to seal to cramp the pipe cap and sampling pipe through the swivel, also need screw the pipe cap with the sampling pipe, can't solve above-mentioned problem, and will realize the effect that the swivel cramps pipe cap and sampling pipe, in the in-process of swivel motion to the downside, the pipe cap external diameter size with the swivel contact should increase gradually, utilize the elastic deformation increase contact surface pressure of swivel and pipe cap, and how to cramp pipe cap and sampling pipe in this patent does not explain the swivel.

The patent with application number of CN202021441181.9 provides a high-sealing virus sampling tube, the inner side of a sample tube is sealed through a ball valve, so that the sealing performance is good, and a sealing plug is fixedly arranged at the lower end of the inner side of a sealing cover and is inserted into the upper end face of the sample tube to seal the sample tube, so that double sealing is formed. This scheme need not rotate sealed lid too many turns, nevertheless has higher to sealed lid turned angle's accuracy requirement, and the ball valve rotates excessively or rotates inadequately easily otherwise, leads to the ball valve sealed not tight, so can't solve above-mentioned problem completely. In addition, this scheme structure is complicated, contains a large amount of transmission structures, and the reliability is not high, will make driving medium such as spring, stay cord and ensure good connection in the narrow and small space of sealed lid, and production technology is too complicated, will make the cost of sampling pipe increase by a wide margin, and the sampling pipe belongs to disposable consumables, and the scheme that this patent was proposed is difficult to implement in big batch nucleic acid sampling work.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: the sampling tube with good sealing performance has the advantages of simple and reliable structure, convenient and labor-saving operation and good sealing performance, and solves the problem that the sampling tube is difficult to be well sealed in large-batch nucleic acid collection work.

The utility model adopts the technical scheme as follows:

the utility model provides a sampling pipe that leakproofness is good, includes body, tube cap, be equipped with the gasket in the tube cap, the mouth of pipe outside of body is equipped with the L shape groove, the inner wall of tube cap is equipped with L shape trip, the L shape groove is the central symmetry setting around the axis of body, L shape trip is the central symmetry setting around the axis of tube cap, L shape groove, L shape trip figure are the same, L shape trip can insert L shape groove and rotation downwards, makes L shape trip, L shape groove meshing, the corner in L shape groove is equipped with the limiting plate, the limiting plate is used for making the lower extreme of L shape trip take place elastic deformation, the lower extreme of L shape trip is equipped with hemispherical bump, works as when L shape trip, L shape groove were jogged, the vertical section, the bump of L shape trip are located the limiting plate both sides.

Preferably, the thickness of the limiting plate conforms to the following relationship:

d＝δ*L+H；

d: the thickness of the limiting plate;

δ: the multiple is selected between 0.05 and 0.2;

l: the distance between the limiting plate and the corner of the L-shaped groove is less than or equal to the total length of the limiting plate;

h: the minimum thickness of the limiting plate is 0-0.2 mm.

Preferably, the exit of body is equipped with the spacing ring, the spacing ring is located L shape groove below, the upper surface of spacing ring is equipped with the elastic washer, and when L shape trip, the meshing of L shape groove, the elastic washer receives the extrusion of tube cap, spacing ring.

Preferably, the entry of body is equipped with the sealing, the external diameter of sealing increases along with the entry distance increase with the body, be equipped with the elastic sealing ring on the inner wall of tube cap, the elastic sealing ring is located L shape trip top, the height of sealing, elastic sealing ring equals, the internal diameter of elastic sealing ring is less than the biggest external diameter of sealing.

Preferably, the gasket is silica gel or rubber material, the gasket is the annular, the surface of gasket is equipped with annular bulge, annular bulge's external diameter equals the entry internal diameter of body.

To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:

(1) The threaded connection mode is replaced by the mode that the L-shaped clamping tenon and the L-shaped groove are meshed, the pipe cover does not need to rotate for a plurality of circles when screwed, and the good sealing performance between the pipe cover and the pipe body can be ensured only by small-angle rotation, so that the problem that the existing sampling pipe adopting threaded connection is difficult to ensure screwing is solved;

(2) Through the arrangement of the salient points and the limiting plate, in the process of meshing the L-shaped clamping tenon and the L-shaped groove, the lower end of the L-shaped clamping tenon is gradually elastically deformed until the salient points pass through the limiting plate and are clamped, at the moment, the lower end of the L-shaped clamping tenon still keeps a certain deformation amount, the pipe cover is tightly pressed on the pipe body by utilizing the extrusion between the limiting plate and the L-shaped clamping tenon, and the pipe orifice is tightly pressed on the gasket, so that a good sealing effect is generated;

(3) The inlet of the pipe body is provided with the sealing part, the sealing part gradually extrudes the elastic sealing ring on the inner wall of the pipe cover in the process that the L-shaped clamping tenon is inserted into the L-shaped groove, so that the pressure between the sealing part and the elastic sealing ring is gradually increased, when the L-shaped clamping tenon is completely inserted into the L-shaped groove, the extrusion force between the sealing part and the elastic sealing ring is maximized, and the sealing effect is further improved by utilizing the close contact between the sealing part and the elastic sealing ring.

Drawings

Fig. 1 is a perspective view of embodiment 1.

Fig. 2 is a schematic perspective view of embodiment 1.

Fig. 3 is an enlarged view of a portion a in fig. 1.

Fig. 4 is an enlarged view of fig. 2 at B.

Fig. 5 is a front view structural view of embodiment 2.

FIG. 6 is an enlarged view of example 2 at C.

Fig. 7 is a perspective view of the tube cap in example 3.

Fig. 8 is a bottom view of the gasket in example 3.

Fig. 9 is a schematic size view of the stopper plate.

The labels in the figure are: 100. a pipe body; 200. a tube cover; 300. a gasket; 101. an L-shaped slot; 102. a limiting plate; 103. a limiting ring; 104. an elastic washer; 105. a sealing part; 201. l-shaped clamping tenons; 202. an elastic sealing ring; 301. an annular projection; 2011. and (4) bumps.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the following detailed description of the present invention is made with reference to the accompanying drawings and examples, and it should be understood that the specific examples described herein are only for the purpose of explaining the present invention and are not intended to limit the present invention.

Example 1

As shown in fig. 1 to 4, the present embodiment provides a sampling tube with good sealing performance, which includes a tube body 100 made of plastic, and a tube cap 200, wherein a gasket 300 is disposed in the tube cap 200, the gasket 300 is ring-shaped and made of silicon, in other embodiments, rubber and other materials with good elasticity and sealing performance may be used instead, an L-shaped groove 101 is disposed outside a tube opening of the tube body 100, an L-shaped tenon 201 is fixedly disposed on an inner wall of the tube cap 200, the L-shaped groove 101 is disposed in central symmetry around an axis of the tube body 100, the L-shaped tenon 201 is disposed in central symmetry around an axis of the tube cap 200, the number of the L-shaped tenon 101 and the number of the L-shaped tenon 201 are both 7, in other embodiments, any number not less than 2 may be provided, the heights of the upper ends of the L-shaped tenon 201 and the L-shaped groove 101 are equal, the width of the lower end of the L-shaped tenon 201 is less than the width of the upper end of the L-shaped groove 101, so that the L-shaped tenon 201 can be inserted into the L-shaped groove 101 and rotated, so that the L-shaped tenons 201 and the L-shaped grooves 101 are engaged.

The lower extreme of L shape trip 201 is disconnected with the inner wall of tube cap 200, and the corner in L shape groove 101 is equipped with limiting plate 102 for make the lower extreme of L shape trip 201 take place elastic deformation, and the lower extreme of L shape trip 201 is equipped with hemispherical bump 2011, and the length of limiting plate 102 is less than the distance of bump 2011 and L shape trip 201 corner, and when L shape trip 201, L shape groove 101 meshing, the vertical section of L shape trip 201, bump 2011 are located limiting plate 102 both sides.

As shown in fig. 9, the thickness of the limit plate 102 satisfies the following relationship:

d＝δ*L+H；

d: the thickness of the limiting plate 102;

δ: the multiple is selected between 0.05 and 0.2;

l: the distance between the limiting plate and the corner of the L-shaped groove 101 is less than or equal to the total length of the limiting plate 102;

h: the minimum thickness of the limiting plate 102 is 0 mm-0.2 mm.

Specifically, in this embodiment, δ is 0.1, h is 0.2mm, and the total length of the position restriction plate 102 is 2mm.

When the L-shaped tenon 201 rotates in the L-shaped groove 101, the protruding point 2011 slides on the lower surface of the limiting plate 102, because the thickness of the limiting plate 102 gradually increases, the elastic deformation degree of the lower end of the L-shaped tenon 201 gradually increases, so that the pipe cover 200 is gradually pressed on the pipe body 100, when the protruding point 2011 crosses the limiting plate 102, the elastic deformation of the lower end of the L-shaped tenon 201 instantaneously reduces, so that the protruding point 2011 is clamped by the limiting plate 102, the L-shaped tenon 201 and the L-shaped groove 101 are prevented from being disengaged, at this moment, the lower end of the L-shaped tenon 201 still keeps a certain deformation amount, the pipe cover 200 keeps a state pressed on the pipe body 100 by using the elasticity of the pipe cover, meanwhile, the gasket 300 is extruded by the pipe orifice of the pipe body 100, and the outlet of the pipe body 100 is well sealed.

Through the arrangement, when the L-shaped clamping tenon 201 and the L-shaped groove 101 are meshed, the elastic gasket 104 is extruded by the pipe cover 200 and the limiting ring 103 and elastically deforms, and the lower edge of the pipe cover 200 is sealed.

When the tube cap 200 needs to be opened again, the tube cap 200 is rotated in a reverse direction, so that the limit plate 102 extrudes the convex points 2011 and the convex points 2011 slide with each other, and the convex points 2011 can be separated from the state clamped by the limit plate 102.

Example 2

The embodiment is improved on the basis of embodiment 1, specifically, as shown in fig. 5 and 6, a sealing portion 105 is provided at the inlet of the tube 100, the outer diameter of the sealing portion 105 increases with the distance from the inlet of the tube 100, an elastic sealing ring 202 made of silicone material is provided on the inner wall of the tube cover 200, the elastic sealing ring 202 is located above the L-shaped tenon 201, the heights of the sealing portion 105 and the elastic sealing ring 202 are equal, and the inner diameter of the elastic sealing ring 202 is smaller than the maximum outer diameter of the sealing portion 105.

With the above arrangement, when the L-shaped tenon 201 is inserted into the L-shaped groove 101, the sealing portion 105 gradually presses the elastic sealing ring 202 and elastically deforms the elastic sealing ring, so that a third sealing surface is formed on the basis of embodiment 1, and the sealing effect is further improved.

Example 3

The embodiment is improved on the basis of embodiment 1, specifically, as shown in fig. 7 and 8, the surface of the gasket 300 is provided with an annular protrusion 301, the outer diameter of the annular protrusion 301 is equal to the inner diameter of the inlet of the pipe body 100, when the L-shaped tenon 201 and the L-shaped groove 101 are engaged, the annular protrusion 301 is just located inside the inlet of the pipe body 100 and attached to the inlet, and the sealing effect of the gasket 300 on the inlet of the pipe body 100 is improved.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not intended to limit the present invention, and all modifications, equivalents, improvements and the like that are made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. The utility model provides a sampling tube that leakproofness is good, includes body (100), tube cap (200), be equipped with gasket (300) in tube cap (200), a serial communication port, the mouth of pipe outside of body (100) is equipped with L shape groove (101), the inner wall of tube cap (200) is equipped with L shape trip (201), L shape groove (101) are central symmetry setting around the axis of body (100), L shape trip (201) are central symmetry setting around the axis of tube cap (200), L shape groove (101), L shape trip (201) figure are the same, L shape trip (201) can insert L shape groove (101) and rotate downwards L shape groove (201), make L shape trip (201), L shape groove (101) meshing, the corner of L shape groove (101) is equipped with limiting plate (102), limiting plate (102) are used for making the lower extreme of L shape trip to take place elastic deformation, the lower extreme of L shape trip (201) is equipped with hemispherical bump (2011), works as L shape trip (101), L shape trip (201) the bump both sides when engaging, the vertical bump (102) are located limiting plate (2011 shape (201).

2. The sampling tube with good sealing performance as claimed in claim 1, wherein the thickness of the limiting plate (102) is in accordance with the following relationship:

d＝δ*L+H；

d: the thickness of the limiting plate (102);

δ: the multiple is selected from 0.05-0.2;

l: the distance between the limiting plate and the corner of the L-shaped groove (101) is less than or equal to the total length of the limiting plate (102);

h: the minimum thickness of the limiting plate (102) is 0-0.2 mm.

3. The sampling tube with good sealing performance according to claim 1, wherein a limiting ring (103) is arranged at the outlet of the tube body (100), the limiting ring (103) is positioned below the L-shaped groove (101), an elastic gasket (104) is arranged on the upper surface of the limiting ring (103), and when the L-shaped tenon (201) and the L-shaped groove (101) are engaged, the elastic gasket (104) is extruded by the tube cover (200) and the limiting ring (103).

4. The sampling tube with good sealing performance according to any one of claims 1 to 3, wherein the inlet of the tube body (100) is provided with a sealing part (105), the outer diameter of the sealing part (105) is increased along with the increase of the distance from the inlet of the tube body (100), the inner wall of the tube cover (200) is provided with an elastic sealing ring (202), the elastic sealing ring (202) is positioned above the L-shaped tenon (201), the heights of the sealing part (105) and the elastic sealing ring (202) are equal, and the inner diameter of the elastic sealing ring (202) is smaller than the maximum outer diameter of the sealing part (105).

5. The sampling tube with good sealing performance according to any one of claims 1 to 3, wherein the gasket (300) is made of silicone or rubber, the gasket (300) is annular, the surface of the gasket (300) is provided with an annular protrusion (301), and the outer diameter of the annular protrusion (301) is equal to the inner diameter of the inlet of the tube body (100).