CN202255505U - Roots gas flow meter - Google Patents
Roots gas flow meter Download PDFInfo
- Publication number
- CN202255505U CN202255505U CN2011203752007U CN201120375200U CN202255505U CN 202255505 U CN202255505 U CN 202255505U CN 2011203752007 U CN2011203752007 U CN 2011203752007U CN 201120375200 U CN201120375200 U CN 201120375200U CN 202255505 U CN202255505 U CN 202255505U
- Authority
- CN
- China
- Prior art keywords
- main shaft
- waist wheel
- bearing
- waist
- synchromesh gear
- 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 - Lifetime
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Abstract
The utility model relates to a roots gas flow meter. The roots gas flow meter comprises a waist wheel assembly, a display assembly, a meter cavity and a synchronous gear; the waist wheel assembly is arranged in the meter cavity; the display assembly is fixedly installed at one end of the meter cavity; the waist wheel assembly comprises a pair of engaged waist wheels, a first main shaft and a second main shaft; the first main shaft and the second main shaft are fixedly installed at two ends of the waist wheels respectively; a first bearing and a second bearing are respectively arranged on the first main shaft and the second main shaft; the synchronous gear is installed on the first main shaft; and the first bearing is arranged outside the synchronous gear. The roots gas flow meter disclosed by the technical scheme of the utility model has the good effects that the roots gas flow meter is simple in structure and is convenient for achieving online maintenance and periodic verification.
Description
Technical field
The utility model relates to a kind of instrument of measuring flow, is specifically related to a kind of gas Roots type flowmeter.
Background technology
The gas Roots type flowmeter is a kind of high-precision gas flow-meter, utilizes the rotation of the inner waist wheel of measurement chamber to realize the purpose of measuring, and is mainly used in the flow through gas gross of closed conduct of accurate measurement.Be suitable for measuring rock gas, cities and towns coal gas, propane, nitrogen etc.At present, the most employing of the measurement chamber of the flowmeter that uses on the market is made up of housing and front and back gland, and the bearing that is used to support places gland; Synchromesh gear places the outside of bearing simultaneously, because bearing is a consumable accessory, when instrument periodic calibration or replacing parts; Need to disassemble flowmeter from pipeline; And dismantle and be used for the synchromesh gear that waits the gap to transmit between the dependable flow meter waist wheel, the technical requirement height is not easy to field maintemance.
Summary of the invention
To the deficiency that prior art exists, it is a kind of simple in structure that the purpose of the utility model is to provide, and is convenient to realize the gas Roots type flowmeter of on-line maintenance and periodic calibration.
For realizing above-mentioned purpose; The utility model provides following technical scheme: a kind of gas Roots type flowmeter; Comprise waist wheel assembly, display module, metering cavity and synchromesh gear; Said waist wheel assembly places in the metering cavity; Display module is fixedly mounted on metering cavity one end; Said waist wheel assembly comprises a pair of intermeshing waist wheel, main shaft
and main shaft
; Said main shaft
and main shaft
are fixedly mounted on waist wheel two ends respectively; And be respectively equipped with the clutch shaft bearing and second bearing on main shaft
and the main shaft
; Said main shaft
is gone up synchromesh gear is installed, and said clutch shaft bearing places the outside of synchromesh gear.
Through adopting technique scheme, shorten table body length size, increased the diameter of axle with matching; Strengthen instrument rigidity; Thereby improve the short-term overload capacity of instrument, and, be convenient to realize on-line maintenance and periodic calibration because clutch shaft bearing places the outside of synchromesh gear.
The utility model further is set to: described synchromesh gear and display module are on same end face.Through this setting, make the utility model structure simpler.
The utility model also further is set to: said two waists wheel is that two hollow bodies and axle center part are formed the cylindrical body of cross section like a kidney shape by two sides, and there is the axis hole that passes main shaft
and main shaft
centre.Through this setting, the operation of waist wheel is more safe and reliable.
The utility model has the advantages that: because clutch shaft bearing places the outside of synchromesh gear; Be convenient to realize on-line maintenance and periodic calibration; And the structure of the utility model is simpler, shortens table body length size, has increased the diameter of axle with matching; Strengthen instrument rigidity, thereby improve the short-term overload capacity of instrument.
Below in conjunction with Figure of description and embodiment the utility model is further described.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment;
Fig. 2 is the explosive view of the utility model embodiment;
Fig. 3 is the structural representation of the utility model embodiment waist wheel.
Embodiment
Referring to Fig. 1, Fig. 2 and Fig. 3; The disclosed a kind of gas Roots type flowmeter of the utility model; Comprise waist wheel assembly, display module 1, metering cavity 4 and synchromesh gear 3; Said waist wheel assembly places in the metering cavity 4; Display module 1 is fixedly mounted on metering cavity 4 one ends; Said waist wheel assembly comprises a pair of intermeshing waist wheel 6,7; Main shaft
9 and main shaft
8; Said main shaft
9 and main shaft
8 are fixedly mounted on waist respectively and take turns 6 two ends; And be respectively equipped with the clutch shaft bearing 2 and second bearing 5 on main shaft
9 and the main shaft
8; Synchromesh gear 3 is installed on the said main shaft
9, and said clutch shaft bearing 2 places the outside of synchromesh gear 3.
Said clutch shaft bearing 2 places the outside of synchromesh gear 3, can guarantee to be connected very closely between two waists of this flowmeter wheel 6,7 and the synchromesh gear 3, and abnormal conditions appear in the dependable flow meter in start-up course sensitivity reduces greatly.
In order to shorten table body length size, described synchromesh gear 3 and display module 1 are on same end face.
Said two waists wheel 6,7 is that two hollow bodies 61 and axle center part are formed the cylindrical body of cross section like a kidney shape by two sides, and there is the axis hole 62 that passes main shaft
9 and main shaft
8 centre.
The principle of work of the utility model: when gas passes through the metering cavity 4 of flowmeter; Under the effect of in-out end pressure reduction, has kinetic energy; Drive 6,7 rotations of waist wheel respectively, utilize its rotating speed to confirm the gas volume of air-flow, its flow number shows on display module 1.
The foregoing description is to the specific descriptions of the utility model; Only be used for the utility model is further specified; Can not be interpreted as the qualification to the utility model protection domain, the technician of this area according to the content of above-mentioned utility model the utility model is made some nonessential improvement and adjustment all falls within the protection domain of the utility model.
Claims (3)
1. gas Roots type flowmeter; Comprise waist wheel assembly, display module, metering cavity and synchromesh gear; Said waist wheel assembly places in the metering cavity; Display module is fixedly mounted on metering cavity one end; Said waist wheel assembly comprises a pair of intermeshing waist wheel, main shaft
and main shaft
; Said main shaft
and main shaft
are fixedly mounted on waist wheel two ends respectively; And be respectively equipped with the clutch shaft bearing and second bearing on main shaft
and the main shaft
; Said main shaft
is gone up synchromesh gear is installed, and it is characterized in that: said clutch shaft bearing places the outside of synchromesh gear.
2. gas Roots type flowmeter according to claim 1 is characterized in that: described synchromesh gear and display module are on same end face.
3. gas Roots type flowmeter according to claim 1 and 2; It is characterized in that: said two waists wheel is that two hollow bodies and axle center part are formed the cylindrical body of cross section like a kidney shape by two sides, and there is the axis hole that passes main shaft
and main shaft
centre.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203752007U CN202255505U (en) | 2011-09-30 | 2011-09-30 | Roots gas flow meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203752007U CN202255505U (en) | 2011-09-30 | 2011-09-30 | Roots gas flow meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202255505U true CN202255505U (en) | 2012-05-30 |
Family
ID=46116732
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203752007U Expired - Lifetime CN202255505U (en) | 2011-09-30 | 2011-09-30 | Roots gas flow meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202255505U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104142164A (en) * | 2013-05-10 | 2014-11-12 | 罗美特（上海）自动化仪表有限公司 | Gas Roots flowmeter |
| CN107830904A (en) * | 2017-11-27 | 2018-03-23 | 重庆前卫克罗姆表业有限责任公司 | Gas roots flowmeter |
| CN108931273A (en) * | 2018-07-26 | 2018-12-04 | 合肥精大仪表股份有限公司 | A kind of rotz flowmeter |
-
2011
- 2011-09-30 CN CN2011203752007U patent/CN202255505U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104142164A (en) * | 2013-05-10 | 2014-11-12 | 罗美特（上海）自动化仪表有限公司 | Gas Roots flowmeter |
| CN107830904A (en) * | 2017-11-27 | 2018-03-23 | 重庆前卫克罗姆表业有限责任公司 | Gas roots flowmeter |
| CN108931273A (en) * | 2018-07-26 | 2018-12-04 | 合肥精大仪表股份有限公司 | A kind of rotz flowmeter |
| CN108931273B (en) * | 2018-07-26 | 2020-04-17 | 合肥精大仪表股份有限公司 | Roots flowmeter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Lingxizhen Industrial Demonstration Park in Cangnan County of Wenzhou City, Zhejiang province 325800 Patentee after: ZHEJIANG CANGNAN INSTRUMENT GROUP Co.,Ltd. Address before: Lingxizhen Industrial Demonstration Park in Cangnan County of Wenzhou City, Zhejiang province 325800 Patentee before: Zhejiang Cangnan Instrument Co.,Ltd. |
|
| CP03 | Change of name, title or address |
Address after: Lingxizhen Industrial Demonstration Park in Cangnan County of Wenzhou City, Zhejiang province 325800 Patentee after: Zhejiang Cangnan Instrument Co.,Ltd. Address before: Lingxizhen Industrial Demonstration Park in Cangnan County of Wenzhou City, Zhejiang province 325000 Patentee before: Zhejiang Cangnan Instrument Factory |
|
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Lingxizhen Industrial Demonstration Park in Cangnan County of Wenzhou City, Zhejiang province 325800 Patentee after: ZHEJIANG CANGNAN INSTRUMENT GROUP CO.,LTD. Address before: Lingxizhen Industrial Demonstration Park in Cangnan County of Wenzhou City, Zhejiang province 325800 Patentee before: ZHEJIANG CANGNAN INSTRUMENT GROUP Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120530 |