CN212646228U - Syringe type air collection sealing device capable of avoiding air leakage - Google Patents
Syringe type air collection sealing device capable of avoiding air leakage Download PDFInfo
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- CN212646228U CN212646228U CN202020939878.2U CN202020939878U CN212646228U CN 212646228 U CN212646228 U CN 212646228U CN 202020939878 U CN202020939878 U CN 202020939878U CN 212646228 U CN212646228 U CN 212646228U
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- piston
- air
- rubber sleeve
- elastic rubber
- needle cylinder
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Abstract
The utility model discloses an avoid cylinder air acquisition sealing device of gas leakage, include: the air collection device comprises a needle cylinder, a piston and an elastic rubber sleeve, wherein the piston is concentrically arranged in the needle cylinder, the tail end of the piston extends out of the tail end of the needle cylinder, the front end of the elastic rubber sleeve is concentrically sleeved at the tail part of the excircle of the needle cylinder, the tail end of the elastic rubber sleeve is sleeved on the excircle of the piston to lock and seal the joint of the needle cylinder and the piston, and when air is collected, the tail end of the elastic rubber sleeve is turned outwards to the excircle of the front end of the elastic rubber sleeve to unlock the joint of the needle cylinder and the piston. In this way, avoid cylinder air acquisition sealing device of gas leakage, gather and accomplish the back, realize the quick seal of cylinder and piston connection department through the resetting of elasticity gum cover to keep the relative position relation of cylinder and piston, promote the stability in the transportation, avoid the gas leakage problem.
Description
Technical Field
The utility model relates to an air acquisition technical field especially relates to a syringe formula air acquisition sealing device who avoids gas leakage.
Background
For a long time, the development of industry has led to the aggravation of environmental pollution, wherein, river water and air pollution seriously affect people's production and life, and in order to promote the human living environment, the treatment of sewage and air pollution is strengthened in all regions.
The air pollution treatment can not be carried out by collecting and detecting air. The air collection can be carried out by adopting a needle cylinder to carry out on-site air extraction collection, and the air inlet hole is additionally sealed through a sealing cover after air extraction is finished. In order to improve the precision of air collection, the needle cylinder and the piston are made of glass materials mostly, and in the actual use process, the joint of the needle cylinder and the piston is poor in stability and is prone to relative displacement and air leakage, so that external air enters the inside of the needle cylinder to pollute the collected air in the transportation process, or the air in the inside of the needle cylinder escapes to reduce the collection amount, and improvement is needed.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the main technical problem who solves provides a syringe formula air acquisition sealing device who avoids gas leakage, avoids the gas leakage problem, promotes the stability of gathering precision and transportation.
In order to solve the technical problem, the utility model discloses a technical scheme be: there is provided a syringe type air collection seal device for avoiding air leakage, comprising: the air collection device comprises a needle cylinder, a piston and an elastic rubber sleeve, wherein the piston is concentrically arranged in the needle cylinder, the tail end of the piston extends out of the tail end of the needle cylinder, the front end of the elastic rubber sleeve is concentrically sleeved at the tail part of the excircle of the needle cylinder, the tail end of the elastic rubber sleeve is sleeved on the excircle of the piston to lock and seal the joint of the needle cylinder and the piston, and when air is collected, the tail end of the elastic rubber sleeve is turned outwards to the excircle of the front end of the elastic rubber sleeve to unlock the joint of the needle cylinder and the piston.
In a preferred embodiment of the present invention, the piston is provided with a pushing plate at the rear end thereof.
In a preferred embodiment of the present invention, the piston and the pushing plate are integrated.
In a preferred embodiment of the present invention, the tail end of the inner hole of the elastic rubber sleeve is provided with a ring groove to reduce the wall thickness.
In a preferred embodiment of the present invention, the bottom of the syringe is provided with an air inlet/outlet joint, and the air inlet/outlet joint is provided with a sealing cover.
In a preferred embodiment of the present invention, the needle cylinder is provided with a hoop for fixing the elastic rubber sleeve.
In a preferred embodiment of the present invention, the outer circumference of the needle cylinder has positioning members protruding outward from the tail portion thereof and distributed in an annular array, and the elastic rubber sleeve has positioning holes corresponding to the positioning members one to one.
In a preferred embodiment of the present invention, the positioning member is a hemispherical or cylindrical structure.
The utility model has the advantages that: the utility model discloses a syringe formula air acquisition sealing device who avoids gas leakage, gather and accomplish the back, realize the quick seal of cylinder and piston connection department through the restoration of elasticity gum cover to the relative position relation of cylinder and piston has been kept, the stability in the promotion transportation avoids gas leakage problem, has promoted air acquisition's precision.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained without inventive work, wherein:
fig. 1 is a schematic structural view of a preferred embodiment of a syringe type air collection sealing device for preventing air leakage according to the present invention;
FIG. 2 is a cross-sectional view of FIG. 1;
FIG. 3 is an enlarged view of portion A of FIG. 2;
fig. 4 is a schematic structural view of a preferred embodiment of the air collection sealing device of the present invention for preventing air leakage;
fig. 5 is a schematic structural view of another preferred embodiment of the syringe type air collection sealing device for preventing air leakage according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely below, and it should be apparent that the described embodiments are only some embodiments of the present invention, but 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 belong to the protection scope of the present invention.
Referring to fig. 1 to 5, an embodiment of the present invention includes:
a syringe type air collection sealing device for preventing air leakage as shown in fig. 1 and 2, comprising: the piston 2 is concentrically arranged in the needle cylinder 1, the tail end of the piston 2 extends out of the tail end of the needle cylinder, and the tail end of the piston 2 is provided with the push disc 3, so that the piston 2 can be conveniently pushed and pulled, and air can be conveniently collected by matching with the needle cylinder 1.
In this embodiment, the piston 2 and the push plate 3 are integrated, and the collected air quality cannot be affected by the glass material. The bottom of the needle cylinder 1 is provided with an air inlet and outlet joint 4 for air to enter and exit, and the air inlet and outlet joint 4 is provided with a sealing cover 5, so that the air is conveniently collected and then enters the air outlet joint 4 for sealing.
The front end of the elastic rubber sleeve 6 is concentrically sleeved at the tail part of the excircle of the needle cylinder 1, the tail end of the elastic rubber sleeve 6 is sleeved on the excircle of the piston 2 to lock and seal the joint of the needle cylinder 1 and the piston 2, and the elastic rubber sleeve 6 can be a silica gel sleeve to avoid secondary pollution to collected air.
The elastic rubber sleeve 6 is fixed on the needle cylinder 1 in two ways:
firstly, as shown in fig. 1 to 4, the tail part of the outer circle of the needle cylinder 1 is convexly provided with positioning parts 8 distributed in an annular array, the elastic rubber sleeve 6 is provided with positioning holes 7 corresponding to the positioning parts 8 one by one, the fixing of the elastic rubber sleeve 6 on the needle cylinder 1 is realized through the matching of the positioning parts 8 and the positioning holes 7, and the positioning parts 8 are of a hemispherical or cylindrical structure, as shown in fig. 3, in the embodiment, the positioning parts 8 are of a hemispherical structure, which is beneficial to the installation of the elastic rubber sleeve 6;
secondly, as shown in fig. 5, the needle cylinder 1 is provided with an anchor ear 10 for fixing the elastic rubber sleeve 6, the anchor ear 10 is adopted to hold the elastic rubber sleeve 6 tightly, and the structure is stable because the elastic rubber sleeve is fixed by screws.
When air collection is carried out, the tail end of the elastic rubber sleeve 6 is turned outwards to the excircle of the front end of the elastic rubber sleeve to unlock the joint of the needle cylinder 1 and the piston 2, as shown in fig. 4, which is beneficial to drawing the piston 2. The tail end of the inner hole of the elastic rubber sleeve 6 is provided with a ring groove 9 to reduce the wall thickness, a gap is reserved to facilitate the tail end eversion operation of the elastic rubber sleeve 6, and after the collection is finished, the elastic rubber sleeve 6 resets to realize the locking and sealing of the joint of the needle cylinder 1 and the piston 2.
To sum up, the utility model discloses a syringe formula air acquisition sealing device who avoids gas leakage who points out has made things convenient for the collection of air and has gathered the back sealed and fixed, avoids gas leakage and the relative displacement of cylinder 1 and piston 2 junction in the transportation, has promoted the air acquisition quality.
The above is only the embodiment of the present invention, not limiting the scope of the present invention, all of which utilize the equivalent structure or equivalent flow transformation made by the content of the present invention, or directly or indirectly applied to other related technical fields, and all included in the same way in the protection scope of the present invention.
Claims (8)
1. A syringe-style air collection seal for preventing air leakage, for collecting and sealing air, comprising: the air collection device comprises a needle cylinder, a piston and an elastic rubber sleeve, wherein the piston is concentrically arranged in the needle cylinder, the tail end of the piston extends out of the tail end of the needle cylinder, the front end of the elastic rubber sleeve is concentrically sleeved at the tail part of the excircle of the needle cylinder, the tail end of the elastic rubber sleeve is sleeved on the excircle of the piston to lock and seal the joint of the needle cylinder and the piston, and when air is collected, the tail end of the elastic rubber sleeve is turned outwards to the excircle of the front end of the elastic rubber sleeve to unlock the joint of the needle cylinder and the piston.
2. The air leak preventing syringe type air collection sealing device as claimed in claim 1, wherein the rear end of the piston is provided with a push disk.
3. The air leak preventing syringe type air collection sealing device according to claim 1, wherein the piston and the push plate are of an integrated structure.
4. The air leakage preventing syringe type air collection sealing device as claimed in claim 1, wherein the tail end of the inner hole of the elastic rubber sleeve is provided with a ring groove to reduce the wall thickness.
5. The air leakage preventing syringe type air collection sealing device as claimed in claim 1, wherein the bottom of the syringe is provided with an air inlet and outlet joint, and the air inlet and outlet joint is provided with a sealing cover.
6. The air-leakage-preventing syringe type air collection sealing device as claimed in claim 1, wherein a hoop for fixing the elastic rubber sleeve is arranged on the syringe.
7. The air leakage preventing syringe type air collection sealing device as claimed in claim 1, wherein the outer cylindrical tail of the syringe is provided with positioning members in an annular array in a protruding manner, and the elastic rubber sleeve is provided with positioning holes corresponding to the positioning members one to one.
8. A leak-proof syringe-type air collection seal as claimed in claim 7, wherein said positioning member is of a hemispherical or cylindrical configuration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020939878.2U CN212646228U (en) | 2020-05-29 | 2020-05-29 | Syringe type air collection sealing device capable of avoiding air leakage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020939878.2U CN212646228U (en) | 2020-05-29 | 2020-05-29 | Syringe type air collection sealing device capable of avoiding air leakage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212646228U true CN212646228U (en) | 2021-03-02 |
Family
ID=74796094
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020939878.2U Expired - Fee Related CN212646228U (en) | 2020-05-29 | 2020-05-29 | Syringe type air collection sealing device capable of avoiding air leakage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212646228U (en) |
-
2020
- 2020-05-29 CN CN202020939878.2U patent/CN212646228U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210302 |