CN212513183U - Roots gas flowmeter - Google Patents
Roots gas flowmeter Download PDFInfo
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- CN212513183U CN212513183U CN202021728731.5U CN202021728731U CN212513183U CN 212513183 U CN212513183 U CN 212513183U CN 202021728731 U CN202021728731 U CN 202021728731U CN 212513183 U CN212513183 U CN 212513183U
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- 230000006698 induction Effects 0.000 claims abstract description 8
- 238000009434 installation Methods 0.000 claims description 4
- 238000005259 measurement Methods 0.000 abstract description 7
- 238000001514 detection method Methods 0.000 abstract description 6
- 230000035945 sensitivity Effects 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 4
- 238000007789 sealing Methods 0.000 abstract description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 238000011084 recovery Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Abstract
The utility model discloses a gas Roots flowmeter, which comprises an upper cover, a gear, a cover plate, a shell, a waist wheel rotor, a bearing, a screw, a gasket, a nut, a locking ring, a magnet, a magnetic induction sensor and a bottom cover, wherein the upper end and the lower end of the shell are respectively provided with the cover plate in a sealing way to form an inner cavity of the shell, and the cover plates are respectively arranged at the upper end and the lower end of the shell; bearings are embedded in the protruding positions of the two ends of the cover plates, rotating shafts of the pair of mutually meshed waist wheel rotors are respectively installed in the inner cavity of the flow meter between the cover plates, and the two ends of each rotating shaft penetrate through the upper end surface and the lower end surface of the two cover plates and are matched with the bearings to rotate; the utility model discloses, very little flow can promote the waist wheel rotor rotatory, reaches sensitivity height, and long service life is equivalent to the effect, but wide application in industrial gas flow detects and control, and urban gas detects or field such as measurement, can the fully provided user to the detection of high accuracy or measure the requirement.
Description
Technical Field
The utility model relates to a metering device equipment field specifically is gaseous roots flowmeter.
Background
At present, the gas flowmeter is used in a plurality of places, for example, a gas station adopts an oil gas recovery system, whether the oil gas recovery amount in the process of oil filling meets the national standard requirement or not is detected, the gas flowmeter needs to be installed on an oil filling machine, and the waist wheel flowmeter is a measuring instrument which is more commonly used in the gas station because of simple structure. However, the existing waist wheel flowmeter is mainly used for measuring large-caliber gas, liquid and steam medium flow, has low sensitivity and low precision, and cannot push the waist wheel to measure small flow or small air pressure flow; in view of these drawbacks, it is necessary to design a gas roots flowmeter.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a gaseous roots flowmeter, very little flow can promote the waist wheel rotor rotatory, reaches sensitivity height, and long service life is equivalent to the effect, but wide application in industrial gas flow detects and control, and city gas detects or field such as measurement, can the fully provided user to the detection of high accuracy or measure the requirement.
The purpose of the utility model can be realized by the following technical scheme:
the gas Roots flowmeter comprises an upper cover, a gear, cover plates, a shell, a lumbar rotor, a bearing, a screw, a gasket, a nut, a locking ring, a magnet, a magnetic induction sensor and a bottom cover, wherein the upper end and the lower end of the shell are respectively provided with the cover plates in a sealing manner to form a shell inner cavity, and the cover plates are respectively arranged at the upper end and the lower end of the shell;
bearings are embedded in the protruding positions of the two ends of the cover plates, a pair of rotating shafts of the waist wheel rotors which are meshed with each other are respectively installed in the inner cavity of the flow meter between the cover plates, the two ends of each rotating shaft penetrate through the upper end surface and the lower end surface of the two cover plates and are matched with the bearings to rotate, gears which are meshed with each other are installed at the upper ends of the two rotating shafts, and a bottom cover and an upper cover are respectively installed on the shell on the outer sides of the two cover plates;
the inside hollow structure that is of kidney-wheel rotor, the waist of kidney-wheel rotor is provided with the circular arc curved surface that equals the radian with the top, two for involute curved surface, one of them between the circular arc curved surface two magnet of installation on the gear, installation the gear of magnet corresponds the upper cover of position and installs magnetic induction sensor.
As a further aspect of the present invention: the shell is provided with an inlet and an outlet, and the inner cavity of the shell is communicated with the inlet and the outlet.
As a further aspect of the present invention: the concentricity of the upper bearing hole and the lower bearing hole of the two cover plates is within 0.02.
As a further aspect of the present invention: the gear is fixed in a limiting mode through a nut and a locking ring which are arranged at the upper end of the rotating shaft, and the bearing is fixed through screws which are located on two sides of the mounting position of the cover plate and tightly pressed between the screws.
The utility model has the advantages that: the utility model discloses an inside hollow structure of waist wheel rotor, adopt aluminium alloy surface stereoplasm oxidation treatment with rotation axis an organic whole, wear resistant surface, light in weight, the driving force of waist wheel rotor has been reduced, two magnetic pulse signals of gear rotation a week output, realize the flow measurement of convection cell, product compact structure, small, it is sensitive to rotate, very little flow can promote the waist wheel rotor rotatory, reach sensitivity height, long service life is equivalent to the effect, but wide application in industrial gas flow detects and control, fields such as city gas detection or measurement, can the fully provided user to the detection of high accuracy or measure the requirement.
Drawings
In order to facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings.
FIG. 1 is a schematic view of the overall internal structure of the present invention;
in the figure: 1. an upper cover; 2. a gear; 3. a cover plate; 4. a housing; 5. a waist wheel rotor; 6. a bearing; 7. a screw; 8. a gasket; 9. a nut; 10. a locking ring; 11. a magnet; 12. a magnetic induction sensor; 13. a bottom cover.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
As shown in fig. 1, the gas roots flowmeter comprises an upper cover 1, a gear 2, a cover plate 3, a shell 4, a waist wheel rotor 5, a bearing 6, a screw 7, a gasket 8, a nut 9, a locking ring 10, a magnet 11, a magnetic induction sensor 12 and a bottom cover 13, wherein the cover plate 3 is hermetically installed at each of the upper end and the lower end of the shell 4 to form a shell inner cavity, and the cover plates 3 are respectively installed at the upper end and the lower end of the shell 4;
the inside of the waist wheel rotor 5 is of a hollow structure and is subjected to hard oxidation treatment on the surface of aluminum alloy integrally with the rotating shaft, the waist part and the top part of the waist wheel rotor 5 are provided with arc curved surfaces with equal radian, an involute curved surface is arranged between the two arc curved surfaces, one gear 2 is provided with two magnets 11, and an upper cover 1 at the position corresponding to the gear 2 provided with the magnets 11 is provided with a magnetic induction sensor 12;
an inlet and an outlet are arranged on the shell 4, and the inner cavity of the shell 4 is communicated with the inlet and the outlet;
the concentricity of the upper bearing hole and the lower bearing hole of the two cover plates 3 is within 0.02;
the gear 2 is limited and fixed through a nut 9 and a locking ring 10 which are arranged at the upper end of a rotating shaft, and the bearing 6 is fixed through a screw 7 which is positioned at the two sides of the mounting position of the cover plate 3 and is in threaded connection with a gasket 8 which is pressed between the two sides.
The utility model discloses a theory of operation: the utility model discloses a 5 inside hollow structures of lumbar gear rotor, adopt aluminium alloy surface stereoplasm oxidation treatment with rotation axis an organic whole, wear-resisting surface, light in weight, the driving force of lumbar gear rotor 5 has been reduced, two magnetic pulse signals of 2 rotatory a week outputs of gear, realize the flow measurement of convection fluid, product compact structure, small, it is sensitive to rotate, very little flow can promote the rotation of lumbar gear rotor 5, it is high to reach sensitivity, long service life is equivalent to the effect, but wide application in industrial gas flow detects and control, fields such as city gas detection or measurement, can the fully provided user is to the detection of high accuracy or measurement requirement.
The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.
Claims (4)
1. The gas Roots flowmeter is characterized by comprising an upper cover (1), a gear (2), a cover plate (3), a shell (4), a waist wheel rotor (5), a bearing (6), a screw (7), a gasket (8), a nut (9), a locking ring (10), a magnet (11), a magnetic induction sensor (12) and a bottom cover (13), wherein the cover plate (3) is hermetically installed at the upper end and the lower end of the shell (4) to form a shell inner cavity, and the cover plate (3) is respectively installed at the upper end and the lower end of the shell (4);
bearings (6) are embedded in the protruding positions of the two ends of the cover plate (3), a pair of mutually meshed rotating shafts of the waist wheel rotor (5) are respectively installed in the inner cavity of the flow meter between the cover plates (3), the two ends of each rotating shaft penetrate through the upper end surface and the lower end surface of each cover plate (3) and are matched with the bearings to rotate, mutually meshed gears (2) are installed at the upper ends of the two rotating shafts, and a bottom cover (13) and an upper cover (1) are respectively installed on a shell (4) on the outer sides of the two cover plates (3);
the inside hollow structure that is of kidney-wheel rotor (5), the waist and the top of kidney-wheel rotor (5) are provided with the circular arc curved surface that equals the radian, two for involute curved surface, one of them between the circular arc curved surface two magnet (11) of installation on gear (2), installation magnetic induction sensor (12) are installed on gear (2) of magnet (11) correspond upper cover (1) of position.
2. A gas roots-type flowmeter according to claim 1 wherein the housing (4) is provided with an inlet and an outlet and the housing (4) interior chamber communicates with the inlet and the outlet.
3. A gas roots-type flowmeter according to claim 1 wherein the concentricity of the upper and lower bearing holes of the two cover plates (3) is within 0.02.
4. A gas roots flowmeter according to claim 1, wherein the gear (2) is fixed in a limiting way by a nut (9) and a locking ring (10) arranged at the upper end of the rotating shaft, and the bearing (6) is fixed by a screw (7) which is positioned at two sides of the mounting position of the cover plate (3) and is connected with a gasket (8) through screw threads.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021728731.5U CN212513183U (en) | 2020-08-18 | 2020-08-18 | Roots gas flowmeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021728731.5U CN212513183U (en) | 2020-08-18 | 2020-08-18 | Roots gas flowmeter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212513183U true CN212513183U (en) | 2021-02-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021728731.5U Active CN212513183U (en) | 2020-08-18 | 2020-08-18 | Roots gas flowmeter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212513183U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113565489A (en) * | 2021-08-02 | 2021-10-29 | 西安东新石油设备厂有限公司 | Fluid metering generator |
-
2020
- 2020-08-18 CN CN202021728731.5U patent/CN212513183U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113565489A (en) * | 2021-08-02 | 2021-10-29 | 西安东新石油设备厂有限公司 | Fluid metering generator |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder |
Address after: 325000 Heyi village, Oubei street, Yongjia County, Wenzhou City, Zhejiang Province Patentee after: Zhejiang Hengsheng Machinery Co.,Ltd. Address before: 325105 Anfeng village, Dongou street, Yongjia County, Wenzhou City, Zhejiang Province Patentee before: Zhejiang Hengsheng Machinery Co.,Ltd. |
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| CP02 | Change in the address of a patent holder |