CN111624056A - 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
- Publication number
- CN111624056A CN111624056A CN202010471582.7A CN202010471582A CN111624056A CN 111624056 A CN111624056 A CN 111624056A CN 202010471582 A CN202010471582 A CN 202010471582A CN 111624056 A CN111624056 A CN 111624056A
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- piston
- air
- rubber sleeve
- elastic rubber
- needle cylinder
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/24—Suction devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/50—Sealings between relatively-movable members, by means of a sealing without relatively-moving surfaces, e.g. fluid-tight sealings for transmitting motion through a wall
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
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- Molecular Biology (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
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Abstract
The invention discloses a syringe type air collection sealing device capable of avoiding air leakage, which comprises: 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. Through the mode, the air leakage-preventing syringe type air collection sealing device disclosed by the invention has the advantages that after collection is finished, the joint of the syringe and the piston is quickly sealed through resetting of the elastic rubber sleeve, the relative position relation of the syringe and the piston is kept, the stability in the transportation process is improved, and the air leakage problem is avoided.
Description
Technical Field
The invention relates to the technical field of air collection, in particular to a needle cylinder type air collection sealing device capable of avoiding air 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.
Disclosure of Invention
The invention mainly solves the technical problem of providing the needle cylinder type air collection sealing device for avoiding air leakage, avoiding the air leakage problem and improving the collection precision and the stability in the transportation process.
In order to solve the technical problems, the invention adopts a technical scheme that: 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 invention, the tail end of the piston is provided with a push disc.
In a preferred embodiment of the present invention, the piston and the push plate are of an integrated structure.
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 circle of the needle cylinder has positioning members protruding 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 invention has the beneficial effects that: according to the air-leakage-preventing syringe type air collection sealing device, after collection is completed, the joint of the syringe and the piston is quickly sealed through resetting of the elastic rubber sleeve, the relative position relation of the syringe and the piston is kept, the stability in the transportation process is improved, the air leakage problem is avoided, and the air collection precision is improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without inventive efforts, wherein:
FIG. 1 is a schematic view of a preferred embodiment of a syringe-type air collection seal of the present invention for preventing air leakage;
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 air leakage prevention;
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 clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 5, an embodiment of the 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.
In conclusion, the air leakage-preventing syringe type air collection sealing device provided by the invention facilitates air collection, sealing and fixing after collection, avoids air leakage and relative displacement at the joint of the syringe 1 and the piston 2 in the transportation process, and improves the air collection quality.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, or direct or indirect applications in other related fields, which are made by the contents of the present specification, are included in the 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 |
|---|---|---|---|
| CN202010471582.7A CN111624056A (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 |
|---|---|---|---|
| CN202010471582.7A CN111624056A (en) | 2020-05-29 | 2020-05-29 | Syringe type air collection sealing device capable of avoiding air leakage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111624056A true CN111624056A (en) | 2020-09-04 |
Family
ID=72260808
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010471582.7A Pending CN111624056A (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) | CN111624056A (en) |
-
2020
- 2020-05-29 CN CN202010471582.7A patent/CN111624056A/en active Pending
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| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20211222 Address after: 201112 floor 4, building 3, No. 168, Jiangchao Road, Minhang District, Shanghai Applicant after: SHANGHAI JIONGCE ENVIRONMENTAL PROT TECHNOLOGY Co.,Ltd. Address before: 215600 No.18 Zhongxing Road, Xieqiao village, yangshe Town, Zhangjiagang City, Suzhou City, Jiangsu Province Applicant before: SUZHOU DATA TESTING SERVICE TECHNOLOGY CO.,LTD. |
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| TA01 | Transfer of patent application right |