CN206756236U - One kind installs filter piston meter additional - Google Patents
One kind installs filter piston meter additional Download PDFInfo
- Publication number
- CN206756236U CN206756236U CN201720607396.5U CN201720607396U CN206756236U CN 206756236 U CN206756236 U CN 206756236U CN 201720607396 U CN201720607396 U CN 201720607396U CN 206756236 U CN206756236 U CN 206756236U
- Authority
- CN
- China
- Prior art keywords
- filter cylinder
- outer layer
- shell
- cylinder
- air
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
It the utility model is related to a kind of installation filter piston meter, including piston meter main body, intake interface is provided with main body, it is characterized in that, enter intake interface after the filtering that ambient atmos pass through filter, described filter includes shell (7), internal layer filter cylinder, outer layer filter cylinder and circulation valve (3), one end of air stream outlet (6) is stretched out shell and is connected with described intake interface, the other end is communicated with internal layer cartridge interior, and outer layer cavity is formed by the outer surface of shell (7) and outer layer filter cylinder；The main body of circulation valve (3) is spiral cylinder, and it is provided with one end of air chamber (2) and is closely connected with shell (7), outer layer filter cylinder and internal layer filter cylinder in a manner of multi-diameter shaft；The through hole of connection air chamber (2) and described outer layer cavity is offered on multi-diameter shaft, the borded pile body of circulation valve (3) is located in internal layer filter cylinder, and ambient atmos enter air inlet chamber (2) by air flow inlet (1).
Description
Technical field
It the utility model is related to a kind of flowmeter.
Background technology
Piston meter is widely used in surrounding air automatic monitoring system, is all to use in ambient air quality continuous monitoring
It completes the detection to instrument flow as Transfer Standards, is responsible for the important task of Environmental Monitoring Quality Assurance.
It uses the principle of dry type piston movement, and in the presence of flowmeter imports and exports gas differential pressure, gas passes through from entrance
Reversal valve enters measuring chamber and promotes piston movement, by reciprocating motion of the piston in measuring chamber, so as to obtain passing through flowmeter
Gas volume value.
However, in actual use and operation, due to the limitation of field environmental condition, the particulate matter of any micron dimension is all
Can enter with gas and be attached on piston and measuring chamber, slowly cause piston movement to be obstructed or complete stuck.
So when flowmeter is moved to caused by another place (also or shelve a period of time reuse) from one place
Temperature difference may cause to condense, and particulate matter is mixed in the vapor of condensation can synthesize microcosmic droplet, so as to cause to live
Fill in retard motion.When flowmeter not used time, gas port and gas outlet are lived in sealed cap；When reusing, flowmeter is allowed new
Environment in stand a period of time after, allow it to be reused after reaching thermal balance.
And when flowmeter passes through much time using, the measured room of air-flow has dust and is gathered in measurement chamber interior walls and work
Beyond the Great Wall, when dust accumulates to a certain extent, the accuracy of flowmeter measurement will be influenceed so that flowmeter carries out disassembling cleaning
With the frequency increase of calibration, flowmeter is caused to re-start calibration and authenticated time shortening.
Utility model content
In view of the above-mentioned problems, the purpose of the design is overcome the deficiencies in the prior art, there is provided one kind can effectively prevent from living
Plug is stuck or the contaminated phenomenon of viscous and measuring chamber occurs, and improves the piston flow of flow enumeration position service life
Meter.
One kind installs filter piston meter, including piston meter main body additional, and intake interface is provided with main body,
Characterized in that, entering intake interface after the filtering that ambient atmos pass through filter, described filter includes shell
(7), internal layer filter cylinder, outer layer filter cylinder, circulation valve (3) and air stream outlet (6), one end of air stream outlet (6) stretch out shell with it is described
Intake interface be connected, the other end communicates with internal layer cartridge interior, and it is empty to form outer layer by the outer surface of shell (7) and outer layer filter cylinder
Chamber；The main body of circulation valve (3) is spiral cylinder, its be provided with one end of air chamber (2) in a manner of multi-diameter shaft with shell (7), outer
Layer filter cylinder and internal layer filter cylinder closely connect；The through hole of connection air chamber (2) and described outer layer cavity, ring are offered on multi-diameter shaft
The borded pile body of stream valve (3) is located in internal layer filter cylinder, and ambient atmos enter air inlet chamber (2) by air flow inlet (1).
The design for prevent flowmeter measuring chamber by it is dirty the characteristics of, can possess after filter is installed additional following excellent
Point：
(1) shell is made of transparent plastic from selection, why selects transparent plastic to be because when filter membrane is dirty
It can find and change in time after dirt；Filter cylinder is to select 5 μm of glass fibre cotton to be made after pulp, and this permeability is good,
Air-flow is not interfered with to normally enter in flowmeter.
(2) from cost, whole parts of the device use versatile material, it is not necessary to any complicated processing, into
This is low；Load onto it and greatly reduce flowmeter maintenance and repair cost later, save expense.
(3) filter is very compact, very light in weight, is easy to carry, and the connection process between scene and flowmeter is simple；
(4) by repeatedly practising, flowmeter has installed it additional, is effectively improved and resists the contaminated ability of measuring chamber, reaches
To effect that is dirty, reducing the maintenance and repair frequency is not easy, so as to extend service life.
Brief description of the drawings
Fig. 1 filters and flowmeter connection diagram
Fig. 2 filter profiles
Label declaration in figure：1st, air flow inlet；2nd, circulation valve air chamber；3rd, circulation valve；4th, filter cylinder I；5th, filter cylinder II；6th, air-flow
Outlet；7th, shell.
Embodiment
The present invention will be described with reference to the accompanying drawings and examples.
Fig. 1 be piston meter install additional filter after connection diagram, by the air flow outlet of filter with
The air inlet of BIOS flowmeters flexible pipe airtight connection.
As shown in Fig. 2 whole filter is specifically included by shell 7,3 several parts of filter cylinder I, filter cylinder II and circulation valve,
Air stream outlet 6 stretches out shell and with being communicated inside filter cylinder I；Filter cylinder I and filter cylinder II are the glass fibre cotton with 3 μm and 5 μm respectively
It is made after pulp, forms Double-layer filter cartridge.The main body of circulation valve 3 is solid spiral cylinder, is provided with one end of air chamber 2
Shape is divided into the first ladder 8, the second ladder 9, the 3rd ladder 10 and fourth order ladder 11, the first ladder 8 and shell similar to multi-diameter shaft
7 internal diameter is engaged, and the inner side of the second ladder 9 and the outer shroud of the 3rd ladder 10 are closely connected with filter cylinder II, in the second ladder 9
Outer shroud offers the through hole (being not drawn into figure) of connection circulation valve air chamber 2 and the internal cavity of shell 7, the outer shroud of the 3rd ladder 10 and the
The inner side of four-step 11 is closely connected with filter cylinder I, and the main body of circulation valve 3 is located at as in the filter cylinder I of interior filter cylinder.Gas is with stable
Flow velocity be evenly distributed in along helical body on the filter membrane of filter cylinder II, it be designed with the uniform velocity, support and fixed filter cylinder
Triple role, and allow the clean air through Double-layer filter cartridge to enter and there are enough spaces to be detained.
In the presence of flow meters work (pumping), air-flow enters the air chamber 2 of circulation valve through entrance 1, is opened up from air chamber
Through hole, be evenly distributed to the outer wall of filter cylinder II (5 μm), the by-pass filtration through filter cylinder II can be some bigger particulate matters
Filter out, by-pass filtration is interception mechanism, and bulky grain thing is worked；Air-flow reaches filter cylinder I (3 μm) after the filtering of filter cylinder II
Outer wall, secondary filtration is formed, some less particulate matters are filtered out, gas enters in circulation valve 3 after double-filtration, in spiral shell
Air-flow is formed along helical groove and flowed along the hand of spiral on rotation cylinder., can be micro- by≤5 after filtering by the second tunic
Rice and >=more than 3 microns particulate matter intercept on second layer filter membrane, reduce particulate matter attachment measurement chamber interior walls and piston on
Phenomenon, the accuracy of gas flow measurement is improved, and then extend the service life of flowmeter.
From air stream outlet 6 into flowmeter, (flowmeter closely connects with filter flexible rubber hose in the presence of pumping
Connect), so as to complete whole filter process.Clean gas after final filtration enters measuring chamber by the intake interface of flowmeter.
Claims (1)
1. one kind installs filter piston meter, including piston meter main body additional, intake interface is provided with main body, its
Be characterised by, enter intake interface after the filtering that ambient atmos pass through filter, described filter include shell (7),
Internal layer filter cylinder, outer layer filter cylinder, circulation valve (3) and air stream outlet (6), one end of air stream outlet (6) are stretched out shell and entered with described
Gas interface is connected, and the other end communicates with internal layer cartridge interior, and outer layer cavity is formed by the outer surface of shell (7) and outer layer filter cylinder；
The main body of circulation valve (3) is spiral cylinder, and it is provided with one end of air chamber (2) and filtered in a manner of multi-diameter shaft with shell (7), outer layer
Cylinder and internal layer filter cylinder closely connect；The through hole of connection air chamber (2) and described outer layer cavity, circulation valve are offered on multi-diameter shaft
(3) borded pile body is located in internal layer filter cylinder, and ambient atmos enter air inlet chamber (2) by air flow inlet (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720607396.5U CN206756236U (en) | 2017-05-27 | 2017-05-27 | One kind installs filter piston meter additional |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720607396.5U CN206756236U (en) | 2017-05-27 | 2017-05-27 | One kind installs filter piston meter additional |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206756236U true CN206756236U (en) | 2017-12-15 |
Family
ID=60621476
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720607396.5U Expired - Fee Related CN206756236U (en) | 2017-05-27 | 2017-05-27 | One kind installs filter piston meter additional |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206756236U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112313483A (en) * | 2018-06-18 | 2021-02-02 | 彼得罗菲奥伦蒂尼有限公司 | Gas meter structure |
-
2017
- 2017-05-27 CN CN201720607396.5U patent/CN206756236U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112313483A (en) * | 2018-06-18 | 2021-02-02 | 彼得罗菲奥伦蒂尼有限公司 | Gas meter structure |
| CN112313483B (en) * | 2018-06-18 | 2024-03-08 | 彼得罗菲奥伦蒂尼有限公司 | Gas meter structure |
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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: 20171215 Termination date: 20200527 |