CN206292215U - Injection device - Google Patents
Injection device Download PDFInfo
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- CN206292215U CN206292215U CN201621267744.0U CN201621267744U CN206292215U CN 206292215 U CN206292215 U CN 206292215U CN 201621267744 U CN201621267744 U CN 201621267744U CN 206292215 U CN206292215 U CN 206292215U
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- injection
- injection body
- push rod
- assembly
- injection device
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Abstract
The utility model provides a kind of injection device, including needle assembly, injection body assembly, injection propulsion assembly, and the needle assembly is arranged at the bottom of injection body assembly, and the injection propulsion assembly is arranged in injection body assembly；The injection propulsion assembly includes push rod, presses gland and piston；The push rod is connected through a screw thread with the center by gland, the center of piston, and metering scale is provided with the push rod；The injection body assembly includes injection Body Lumen, injection housing cover and injection body lower cover, and the injection housing cover and injection body lower cover are respectively arranged at the upper and lower ends of injection Body Lumen；Through injection Body Lumen, the piston is arranged in injection Body Lumen the push rod.The injection device that the utility model is provided, air-tightness is good, and metering method is simple, and conversion head can be realized being seamlessly connected with gas-tight container.
Description
Technical field
The utility model belongs to environmental treatment equipment technical field, belongs to pollutant meter store equipment technical field, tool
Body is related to a kind of injection device.
Background technology
In environmental monitoring work, often sample is injected in instrument with needle and syringe head, in medical domain application
It is commonplace.Packing gas chromatography instrument is used in environmental monitoring to enter in instrument, it is necessary to gas or fluid sample are injected,
But often due to having pressure in instrument, so unavoidable between general syringe and syringe needle produce leakage because pressure is acted on, because
And influence result accuracy；In addition, when sample is more, syringe and the frequent plug of syringe needle, because syringe needle root is thinner, are pulled up compared with expense
Power, in some instances it may even be possible to damage finger.In environmental treatment, using in head space filtration system, the metering method of syringe is more difficult accurate
Reading, have error to the metering of gas and liquid；Easily occurs the situation of leakage in connection.
CN201620400512.1 discloses a kind of injection device for preventing and revealing and conveniently take, it is characterised in that：It is described
Injection device includes syringe needle and syringe, and the syringe needle includes on syringe needle connection end and by syringe needle connecting portion and the syringe needle
The metal needle that connection end is connected, the inwall of connection end is provided with inside spin structure on the syringe needle, the inside spin structure
Internal thread is the one kind in trapezoidal thread, rectangular thread or saw-tooth thread, and the outer wall of connection end is provided with use on the syringe needle
Structure is expanded in increase moment of torsion.The utility model is mainly utilized and uses inside spin structure, syringe in connection end on syringe needle
Corresponding external spiral structure is used with the incoming end that connection end on syringe needle is installed, and is set on the outside of connection end on syringe needle and is expanded
Structure, so as to play the effect for sample leakage being prevented during sample introduction and conveniently being taken, but, the injection device still uses common pin
Head and conventional metering method, have some limitations.
Utility model content
In view of the shortcomings of the prior art, the utility model provides that a kind of air-tightness is good, and metering method is simple, conversion head with
Gas-tight container can realize the injection device being seamlessly connected.
In order to solve the above technical problems, the utility model provides following technical scheme：Injection device, it includes syringe needle group
Part, injection body assembly, injection propulsion assembly, the needle assembly are arranged at the bottom of injection body assembly, and the injection is pushed away
Enter component to be arranged in injection body assembly；The injection propulsion assembly includes push rod, presses gland and piston；The push rod with press
Gland centrally through threaded connection, the push rod, centrally through threaded connection, is provided with metering with piston on the push rod
Scale；The piston is arranged in injection body assembly, and the push rod is applied in injection body assembly, described to press gland setting
Outside injection body assembly.The piston is polytetrafluoroethylmaterial material, and the push rod is aluminium, and the gland of pressing is for plastics material
Material.The injection body assembly and needle assembly are stainless steel material.
Further, the injection body assembly includes injection Body Lumen, injection housing cover and injection body lower cover,
It is described injection housing cover and injection body lower cover be respectively arranged at injection Body Lumen upper and lower ends, and with injection body
Cavity is connected through a screw thread；Through injection Body Lumen, the piston is arranged in injection Body Lumen the push rod.
Further, the injection housing cover middle part is provided with the circular hole that the push rod passes through.
Further, moveable positioning wedged block is provided with the push rod, the positioning wedged block is located on injection body
Cover and by between gland.The position moved by the positioning wedged block, realization is measured to the liquid in syringe.
Further, the injection body lower cover is provided with the fixing end being connected with the needle assembly.
Further, the fixing end can be screwed pipe, or and needle assembly with externally threaded protrusion
Supporting lockhole.
Further, the external screw thread is trapezoidal thread, rectangular thread or buttless thread.
Further, the needle assembly includes fixed cover, safety valve, pinhead sleeve, the fixed cover successively from top to bottom
Match with the fixing end, the pinhead sleeve matches with external equipment.The external equipment can be head space filtering dress
Put or gas chromatograph device etc..
Further, the fixed cover is internally provided with the internal thread matched with fixing end, or the fixed cover
Portion is provided with the lock matched with the lockhole.
The beneficial effects of the utility model：
The utility model provides a kind of injection device, not only with store function, also with following advantage：
1) injection device is assembled by screw thread, it is possible to achieve each accessory convenient disassembly, is easy to follow-up cleaning and more
Spare and accessory parts are changed, be can be repeated several times and used；
2) the injection device air-tightness is good, can effectively completely cut off the contact with external environment condition, realizes the accurate of subsequent detection
Property；
3) injection device carries out positional readings using scale, positioning wedged block is set on push rod, realizes to gas, liquid
Effectively metering；
4) injection device uses removable needle component, is capable of achieving to be carried out from the pipeline of different bores, unlike material
Connection；Realize being seamlessly connected with gas-tight container, the transfer of toxic gas, liquid is realized in perfection；
5) the injection device simple structure, is suitable to the storage and metering of toxic gas, liquid, and low cost is adapted to industry raw
Produce and apply.
Brief description of the drawings
Fig. 1 is the structural representation of the utility model preferred embodiment；
Fig. 2 is the structural representation of injection propulsion assembly part in the utility model preferred embodiment.
Specific embodiment
The utility model is further described with specific embodiment below, but the utility model does not receive following embodiments
Restriction.
Embodiment 1
As shown in Fig. 1~2, the utility model provides a kind of injection device, and it includes needle assembly 3, injection body assembly
2nd, propulsion assembly 1 is injected, the needle assembly 3 is arranged at the bottom of injection body assembly 2, and the injection propulsion assembly 1 is set
In in injection body assembly 2；As shown in Fig. 2 the injection propulsion assembly 1 includes push rod 11, presses gland 12 and piston 13；It is described
Push rod 11 with press gland 12 centrally through threaded connection, the push rod 11 with piston 13 centrally through threaded connection, it is described
Metering scale 14 is provided with push rod 11；The piston 13 is arranged in injection body assembly 2, and the push rod 11 is applied in injection
It is described to be arranged on outside injection body assembly 2 by gland 12 in body assembly 2.The piston 13 is polytetrafluoroethylmaterial material, described
Push rod 11 is aluminium, and the gland 12 of pressing is for plastic material.
The injection body assembly 2 and needle assembly 3 are stainless steel material.The injection body assembly 2 includes injection originally
23 points of body cavity 21, injection housing cover 22 and injection body lower cover 23, the injection housing cover 22 and injection body lower cover
The upper and lower ends of injection Body Lumen 21 are not arranged at, and are connected through a screw thread with injection Body Lumen 21；The push rod 11
Through injection Body Lumen 21, the piston 13 is arranged in injection Body Lumen 21.The middle part of injection housing cover 22 sets
It is equipped with the circular hole that the push rod 11 passes through.Positioning wedged block 15 is provided with the push rod 11, the positioning wedged block 15 is located at injection
Housing cover 22 and press between gland 12.The position moved by the positioning wedged block 15, realization is entered to the liquid in syringe
Row metering.The injection body lower cover 23 is provided with the fixing end 24 being connected with the needle assembly 3.The fixing end 24 can be with
It is screwed pipe, or the lockhole supporting with needle assembly 3 with externally threaded protrusion.The external screw thread is trapezoidal spiral shell
Line, rectangular thread or buttless thread.
The needle assembly 3 includes fixed cover 31, safety valve 32, pinhead sleeve 33, the fixed cover 31 successively from top to bottom
Match with the fixing end 24, the pinhead sleeve 33 matches with external equipment.The external equipment can be head space mistake
Filter device or gas chromatograph device etc..The fixed cover 31 is internally provided with the internal thread matched with fixing end 24, or
The fixed cover 31 is internally provided with the lock matched with the lockhole.
Injection device of the present utility model, using preceding, passed through screw thread and is assembled, assembling tightened with it is external
Equipment is attached and uses.The metering regulation of the injection device, the gas or liquid entered by the needle assembly of injection device,
Push rod movement is promoted, positioning wedged block is moved, the scale on push rod is read by the position of positioning wedged block, realized to injection
The reading of gas or amount of liquid in device.The injection process of the injection device：By first reading the push rod scale before injection, beat
Safety valve is driven, promotes push rod to be injected, after the completion of injection, closed safe valve adjusts positioning wedged block, reads the quarter on push rod
Degree, realizes the reading to the gas or amount of liquid injected.
The injection device that the utility model is provided, is assembled, it is possible to achieve each accessory convenient disassembly by screw thread, is easy to
Follow-up cleaning and replacing spare and accessory parts, can be repeated several times and use；The injection device air-tightness is good, can effectively completely cut off and external environment condition
Contact, realize the accuracy of subsequent detection；Using scale is set on push rod, positioning wedged block carries out positioning reading to the injection device
Number, realizes to gas, effective metering of liquid；The injection device use removable needle component, be capable of achieving from different bores,
The pipeline of unlike material is attached；Realize being seamlessly connected with gas-tight container, the transfer of toxic gas, liquid is realized in perfection；Should
Injection device simple structure, is suitable to the storage and metering of toxic gas, liquid, and low cost is adapted to industrial production and application.
Preferred embodiment of the present utility model is the foregoing is only, the utility model is not limited to, for this
For the technical staff in field, the utility model can have various modifications and variations.It is all it is of the present utility model spirit and principle
Within, any modification, equivalent substitution and improvements made etc. should be included within protection domain of the present utility model.
Claims (8)
1. injection device, it is characterised in that including needle assembly, injection body assembly, injection propulsion assembly, the needle assembly
The bottom of injection body assembly is arranged at, the injection propulsion assembly is arranged in injection body assembly；The injection propulsion group
Part includes push rod, presses gland and piston；The push rod with press gland centrally through threaded connection, in the push rod and piston
The heart is connected through a screw thread, and metering scale is provided with the push rod；The injection body assembly includes injection Body Lumen, injection
Housing cover and injection body lower cover, the injection housing cover and injection body lower cover are respectively arranged at injection Body Lumen
Upper and lower ends, and be connected through a screw thread with injection Body Lumen；It is described to be arranged on outside injection body assembly by gland；It is described to push away
Through injection Body Lumen, the piston is arranged in injection Body Lumen bar；The injection housing cover middle part is set
State the circular hole that push rod passes through.
2. injection device according to claim 1, it is characterised in that moveable locator card is provided with the push rod
Block, the positioning wedged block is located at injection housing cover and presses between gland.
3. injection device according to claim 1, it is characterised in that the injection body lower cover is provided with and the syringe needle
The fixing end of component connection.
4. injection device according to claim 3, it is characterised in that the fixing end is the spiral shell with externally threaded protrusion
Line pipe.
5. injection device according to claim 4, it is characterised in that the external screw thread be trapezoidal thread, rectangular thread or
Buttless thread.
6. injection device according to claim 3, it is characterised in that the needle assembly includes fixing from top to bottom successively
Set, safety valve, pinhead sleeve, the fixed cover match with fixing end, and the pinhead sleeve matches with external equipment.
7. injection device according to claim 6, it is characterised in that the fixed cover is internally provided with and fixing end
The internal thread matched somebody with somebody.
8. injection device according to claim 6, it is characterised in that the external equipment is head space filter or gas phase
Chromatogram instrument apparatus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621267744.0U CN206292215U (en) | 2016-11-23 | 2016-11-23 | Injection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621267744.0U CN206292215U (en) | 2016-11-23 | 2016-11-23 | Injection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206292215U true CN206292215U (en) | 2017-06-30 |
Family
ID=59099368
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621267744.0U Active CN206292215U (en) | 2016-11-23 | 2016-11-23 | Injection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206292215U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107389841A (en) * | 2017-08-31 | 2017-11-24 | 国网河南省电力公司检修公司 | A kind of hermetically sealed injector of dielectric oil chromatographic analysis |
-
2016
- 2016-11-23 CN CN201621267744.0U patent/CN206292215U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107389841A (en) * | 2017-08-31 | 2017-11-24 | 国网河南省电力公司检修公司 | A kind of hermetically sealed injector of dielectric oil chromatographic analysis |
| CN107389841B (en) * | 2017-08-31 | 2019-06-04 | 国网河南省电力公司检修公司 | A kind of hermetically sealed sample injector of dielectric oil chromatographic analysis |
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