CN108827413A - A kind of Roots type flowmeter - Google Patents
A kind of Roots type flowmeter Download PDFInfo
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- CN108827413A CN108827413A CN201810650786.XA CN201810650786A CN108827413A CN 108827413 A CN108827413 A CN 108827413A CN 201810650786 A CN201810650786 A CN 201810650786A CN 108827413 A CN108827413 A CN 108827413A
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- inner casing
- gas flow
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F11/00—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it
- G01F11/28—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with stationary measuring chambers having constant volume during measurement
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- General Physics & Mathematics (AREA)
- Measuring Volume Flow (AREA)
Abstract
The invention discloses a kind of Roots type flowmeters, are made of gas flow volume correction instrument, gauge outfit, measuring room；Gas flow volume correction instrument is connect by bracket with measuring room；Gauge outfit is connect with measuring room；The gas flow volume correction instrument is made of front cover and rear cover sealed connection, loose-leaf is equipped between the front cover and the rear cover, four corners of the front cover and four corners of the rear cover are fixed as one by four screws.The structure connection relationship of shell of the present invention, machine core, no matter upper entering and lower leaving or it is left go out into the right side, be able to achieve, facilitate installation；By the design of lower oilhole, in maintenance, emptying is very convenient；Independent Machine Design, maintenance when do not have to Zheng Biaofan factory, so that it may on-line maintenance removes machine core, the machine core more renewed can (new machine core is good in factory calibration), bad machine core brings back factory repair.
Description
Technical field
The present invention relates to field of flow meters, and in particular to a kind of Roots type flowmeter.
Background technique
Roots type flowmeter is also known as rotz flowmeter, is mainly used for accomplished continuously or intermittently surveying gas flow in closed conduct
The high-precision measuring instrument of amount.It has precision height, good reliability, light-weight, the service life is long, running noises are low, the side of installing and using
Just the features such as rotz flowmeter can scene instruction integrated flux, instantaneous flow, single dose etc., also exportable pulse signal, 4-
20mA or 1-5V analog signal, 485 communications, 4-20mA+HART, MODBUS agreement etc..Rotz flowmeter is turned by measuring room, metering
Son, metering unit component (i.e. internal measurement element) and counting indicator component etc. are constituted.Have one in the shell of rotz flowmeter
A measuring room, have in measuring room it is a pair of or two pairs can tangent rotation waist wheel (being the gear that the number of teeth is 2 in fact), in flowmeter
It is co-axially mounted a pair of of driving gear with two waist wheels outside shell, they, which are intermeshed, allows two waist wheels mutually to link.
Roots type flowmeter is continuously divided into gas single known volume fractiion using mechanical measurement element, according to measuring room
Gradually, the number for being repeatedly full of and discharging the volume fractiion fluid carrys out measuring flow volume total amount.When detected fluid flows through gas
When meter, the dynamic pressure of gas makes to form a differential pressure between inlet and outlet and waist wheel is pushed to rotate, when waist in gas push first axle
When wheel rotates in an anti-clockwise direction, the waist wheel that the driving gear band being attached thereto moves on the second axis is rotated clockwise, after 90 ° of rotation,
The waist wheel of top is rotated clockwise by gas push, and driving gear band moves following waist wheel and rotates counterclockwise；When waist wheel is rotated by 360 °,
There is the fluid discharge stream meter for being four times in measuring room dischargeable capacity.In this way, two waist wheel exchange driving rotations, with turning for waist wheel
Dynamic, gas is via the continuous discharge stream meter of measuring room.The gas volume of waist wheel every revolution discharge is a fixed value, that is, is discharged
Measure it is directly proportional to waist wheel shaft revolution, by waist wheel shaft and other transmission mechanisms, will rotation number slow down after be transmitted to calculating and show
Show part.As long as this working principle of exactly rotz flowmeter determines that this flowmeter measuring room internal engagement gap is set
Rationally, it just has higher precision and the lower flow that starts, this characteristic is in industry and civilian cell combustion gas meter for meter, assembling
Particularly important in amount, it had not only met measuring accuracy when resident is just commonly using gas, but also overcame other type flow juice to resident
Small tolerance is helpless when gas-use low peak.
Existing Roots's quantifier, installation direction have tool sex-limited, and erector is easy to wrongly installed direction and does over again.In addition it is tieing up
Complete machine is needed to change when repairing, on the spot calibration, it is time-consuming and laborious in this way；After returning factory, emptying is also pretty troublesome.
Summary of the invention
In order to solve the above-mentioned technical problem, the present invention proposes a kind of Roots type flowmeter, solves what machine core can be repaired individually
Problem, there are also the problem of oil inlet and emptying inconvenience, no matter upper entering and lower leaving or it is left go out into the right side, can facilitate installation.
To achieve the goals above, the present invention adopts the following technical scheme that：
A kind of Roots type flowmeter is made of gas flow volume correction instrument, gauge outfit, measuring room；The amendment of gas flow volume
Instrument is connect by bracket with measuring room；Gauge outfit is connect with measuring room；
The gas flow volume correction instrument is made of, the front cover and the rear cover front cover and rear cover sealed connection
Between be equipped with loose-leaf, four corners of the front cover and four corners of the rear cover are fixed as one by four screws, institute
It states and is equipped with display screen in front cover；It is connected with PLC, the PLC connection power supply and display screen in the rear cover, connection is covered after described
There are multiple interfaces；
The first interface of the gas flow volume correction instrument is connect by the first cable with the gauge outfit, acquisition pulse letter
Number, by electron process, change into flow signal；
The second interface of the gas flow volume correction instrument passes through the pressure sensor of the second cable and the measuring room
Connection, effect are the temperature values for acquiring measuring room；
The third mouth of the gas flow volume correction instrument is connected by the temperature sensor of third cable and the measuring room
It connects, effect is the pressure value of acquisition meter room；
Counter is equipped in the gauge outfit；
The measuring room is made of shell, machine core, front shroud and back shroud；
The shell is cuboid, is internally provided with the measuring room of Hollow Cylindrical Shaft shape；There are two installations on the measuring room
Mouthful, described two installing ports are located in two opposites of the shell；The first inlet, outlet are additionally provided on the measuring room
Mouthful, first inlet, outlet is located in other two opposite of the shell, the center line of two installing ports and the
The central axis of one inlet, outlet；One of remaining two opposite of the shell is equipped with indicator, is used to indicate first
The installation direction of inlet, outlet；The inner wall axial direction of the measuring room is equipped with upper card interface and lower card interface；
The machine core includes inner casing, the inner casing be hollow tubular, the tube wall of the inner casing be radially equipped with second into and out of
Port；The first and second oil-through-hole is penetratingly equipped in the tube wall axial direction of the inner casing, two oil-through-holes are located at the upper of the inner casing
Side and lower section, the inner casing are equipped with left and right plush copper；
Rotor is connected in the inner casing, rotor is equipped with first shaft hole and the second axis hole；
The both ends of the inner casing are sealedly connected with left wallboard and right wallboard respectively, and left and right wallboard is flute profile, structure one
It causes, is tightly connected respectively with front shroud and back shroud, serves as fuel tank；Left wallboard is equipped with third oil-through-hole, the 4th oil-through-hole,
Right wallboard is equipped with the 5th oil-through-hole, the 6th oil-through-hole；First oil-through-hole, third oil-through-hole, the 5th oil-through-hole are corresponding, and pass through
Lead to and connects, oil-through-hole in formation；Second oil-through-hole, the 4th oil-through-hole, the 6th oil-through-hole are corresponding, and penetrate through connection, under formation
Oil-through-hole；Third axis hole, the 4th axis hole, the 5th axis hole, the 6th axis hole are respectively equipped in the middle part of left and right wallboard；
First transmission shaft is through connection first shaft hole, third axis hole, the 5th axis hole；
Second driving shaft is through connection the second axis hole, the 4th axis hole, the 6th axis hole；
One end of first transmission shaft and second driving shaft is successively arranged from outside to inside gets rid of oil sheet, bearing gland, bearing respectively；
It gets rid of oil sheet, bearing gland, bearing to be respectively positioned in the slot of left wallboard, transmission gear, which is set on the first transmission shaft and is located at, gets rid of oil sheet
Front；
The other end of first transmission shaft and second driving shaft is successively arranged from outside to inside gets rid of oil sheet, driven gear, axis respectively
Pressure cap, bearing；Two driven gears intermesh；Oil sheet, driven gear are got rid of, bearing gland, bearing are respectively positioned in right wallboard.
The machine core is placed in shell, the left and right plush copper of the machine core and the upper card interface of the inner casing and lower card interface
It is engaged by clamping, first inlet, outlet is corresponding with the second inlet, outlet；
Front shroud is equipped with tank filler sleeve and oily window；Back shroud is equipped with tank filler sleeve and oily window；Above, oily window exists tank filler sleeve
Lower section；
Tank filler sleeve is correspondingly arranged with upper oil-through-hole, and oily window is correspondingly arranged with lower oil-through-hole；Oily window is for observing volume read-out；
From tank filler sleeve enter volume read-out be：It is advisable with oil sheet bottom contact 1mm-10mm is got rid of；
In this way since air inlet and gas outlet form pressure difference, drive rotor makes the pinion rotation on transmission shaft, thus band
Counter changes in dynamic gauge outfit.
Further, the PLC is connected with GPS module and bluetooth module, is used for data exchange, realizes remote operation.
Further, the power supply uses battery, and the battery is fixed by battery holder.
Further, the hollow tubulose of the inner casing is " lantern " shape, is matched with the shape of rotor.
Further, the upper card interface and lower card interface are symmetrical about the center line a of the inner casing.
Further, the shape of the upper card interface is " bowl " type that falls.
Further, the shape of the lower card interface is " circular arc " type.
Further, the side of the indicator is set there are three at labeling, and corresponding at labeling has warming interface, pressure sensitivity
Pressure interface when interface and calibrating.
Further, the inlet, outlet is surrounded by four mounting holes, and four mounting holes divide equally circumferentially.
Further, the open end of the left wallboard and right wallboard is respectively equipped with seal groove.
Beneficial effect：The structure connection relationship of shell of the present invention, machine core, no matter upper entering and lower leaving or it is left go out into the right side, can be real
It is existing, facilitate installation；By the design of lower oilhole, in maintenance, emptying is very convenient；Independent Machine Design, not in maintenance
With Zheng Biaofan factory, so that it may on-line maintenance removes machine core, the machine core more renewed can (new machine core is good in factory calibration),
Bad machine core brings back factory repair.
Detailed description of the invention
Fig. 1 is a kind of perspective view of Roots type flowmeter of the present invention；
Fig. 2 is a kind of main view of Roots type flowmeter of the present invention；
Fig. 3 is the open shape structural schematic diagram of gas flow volume correction instrument in the present invention；
Fig. 4 is the state diagram that an a kind of gas left side for Roots type flowmeter of the present invention goes out into the right side；
Fig. 5 is a kind of state diagram of the gas upper entering and lower leaving of Roots type flowmeter of the present invention；
When Fig. 6 is that a gas left side goes out into the right side in Fig. 4, the tank filler sleeve schematic diagram with oily window in lower section above；
When Fig. 7 is gas upper entering and lower leaving in Fig. 5, the tank filler sleeve schematic diagram with oily window in lower section above；
When Fig. 8 is that a gas left side goes out into the right side, the tank filler sleeve partial schematic diagram with oily window in lower section above；
When Fig. 9 is gas upper entering and lower leaving, the tank filler sleeve partial schematic diagram with oily window in lower section above；
Figure 10 is the perspective view of shell in the present invention；
Figure 11 is the main view of shell in the present invention；
Figure 12 is the perspective view of inner casing in the present invention；
Figure 13 is the main view of inner casing in the present invention；
Figure 14 is the right view of machine core in the present invention；
Figure 15 is the left view of machine core in the present invention；
Figure 16 is the main view of machine core in the present invention；
Figure 17 is the explosive view of machine core in the present invention；
Figure 18 is the perspective view of machine core in the present invention.
As shown in the figure：Gas flow volume correction instrument 100, front cover 101, rear cover 102, display screen 103, PLC104, power supply
105, interface 106, sealing structure 107, pressure sensor 108, temperature sensor 109；Gauge outfit 200；Measuring room 300；Tank filler sleeve
303, oily window 304, front shroud 305, back shroud 306,310 second air inlets, 311 hollow tubuloses, 312 first oil-through-holes, 313 the
Two oil-through-holes, 314 second gas outlets, 315 left plush coppers, 316 right plush coppers, right wallboard 317, left wallboard 321, third oil-through-hole 325,
4th oil-through-hole 326, five oil-through-holes 327, the first transmission shaft 328, second driving shaft 329, transmission gear 330, third axis hole
331, the 4th axis hole 332, first shaft hole 333, the second axis hole 334, bearing gland 337, driven gear 338, get rid of oil sheet 339, axis
Hold 340, shell 370, the first air inlet 371, the first gas outlet 372, front shroud 373, back shroud 374, the peace of indicator 375,376
Fill mouth, 377 measuring rooms, card interface on 378,379 lower card interfaces, 380 machine cores, inner casing 390, rotor 391, the first cable 400, the
Two cables 500, third cable 600, bracket 700.
Specific embodiment
Below in conjunction with attached drawing the structure and working principle that the present invention will be described in detail.
As shown in Figs. 1-2, a kind of Roots type flowmeter, by gas flow volume correction instrument 100, gauge outfit 200, measuring room 300
Composition；Gas flow volume correction instrument 100 is connect by bracket 700 with measuring room 300；Gauge outfit 200 is connect with measuring room 300；
The first interface of the gas flow volume correction instrument 100 is connect by the first cable 400 with the gauge outfit 200, and effect is to adopt
Set pulse signal changes into flow signal by electron process.The second interface of the gas flow volume correction instrument 100 passes through
Second cable 500 is connect with the pressure sensor 108 of the measuring room 300, and effect is the temperature value of acquisition meter room 300；It is described
The third mouth of gas flow volume correction instrument 100 is connected by the temperature sensor 109 of third cable 600 and the measuring room 300
It connects, effect is the pressure value of acquisition meter room 300；Counter is equipped in the gauge outfit 200；
As shown in figure 3, the gas flow volume correction instrument 100, is made of front cover 101 and the sealed connection of rear cover 102,
Loose-leaf is equipped between the front cover 101 and the rear cover 102, four corners of the front cover and four corners of the rear cover are logical
It crosses four screws to be fixed as one, when opening, front cover and rear cover not will disconnect, and display screen 103 is equipped in the front cover；After described
It is connected with PLC104, the PLC104 connection power supply 105 and display screen 103 in lid 102, is connected on the rear cover 102 multiple
Interface 106；The PLC is connected with GPS module and bluetooth module, is used for mobile phone or computer end data exchange, realizes remote operation.
The power supply 105 uses battery, and the battery is fixed by battery holder.The open end of the left wallboard and right wallboard is respectively equipped with
Sealing structure 107, sealing structure 107 are to open up seal groove on front cover 101 and rear cover 102, are equipped with sealing ring, the two sealing
Connection.
As shown in figs. 4 and 7, the measuring room 300 is by shell 370, machine core 380, front shroud 373 and 374 groups of back shroud
At；The front end of measuring room 300 is gauge outfit, and tank filler sleeve 303 and oily window 304, metering are equipped on front shroud 373 and back shroud 374
The upper surface of room 300 is equipped with indicator 375, and the side of indicator 375 is set there are three at labeling 301, and 301 correspond at labeling
Pressure interface 3013 when having warming interface 3011, pressure sensitivity interface 3012 and calibrating.
As shown in Figure 10, the shell 370 is cuboid, is internally provided with the measuring room 377 of Hollow Cylindrical Shaft shape；The meter
It measures there are two installing port 376 on room, described two installing ports 376 are located in two opposites of the shell 370；It is described
The first inlet, outlet 371,372 is additionally provided on measuring room 377, first inlet, outlet 371,372 is located at described outer
In other two opposite of shell, the center line of two installing ports 376 and the central axis of the first inlet, outlet 371,372；
One of described remaining two opposite of shell 370 is equipped with indicator 375, is used to indicate the peace of the first inlet, outlet 371,372
Fill direction；The inner wall axial direction of the measuring room 377 is equipped with upper card interface 378 and lower card interface 379；First inlet, outlet
The surrounding of mouth 371,372 is all provided with there are four mounting hole, and four mounting holes are divided equally on the same circumference.
As shown in figure 11, the shape of the upper card interface 378 is " bowl " shape.The shape of the lower card interface 379 is " circle
Arc " type.
As shown in Figure 12,13,17, the machine core 380 includes inner casing 390, and the inner casing 390 is hollow tubular 311, hollow
Tubulose 311 is " lantern " shape, is matched with the shape of rotor 391.The tube wall of the inner casing 390 be radially equipped with second into and out of
Port 310,314；The first and second oil-through-hole 312,313 is penetratingly equipped in the tube wall axial direction of the inner casing, two oil-through-holes distinguish position
Above and below the inner casing 309, the inner casing 309 is equipped with left and right plush copper 315,316；
As shown in figure 13, other than the first and second oil-through-hole 312,313, inner casing 390 be front and rear, left and right, it is symmetrical above and below,
Upper and lower center line a, left and right center line b, the first and second oil-through-hole 312,313 diagonally opposing corners are set on the tube wall of inner casing 390, and first
Oil-through-hole 312 is located at the top of left plush copper 315 or right plush copper 316, and the second oil-through-hole 313 is located at left plush copper 315 or right plush copper 316
Lower section.
Rotor 391 is connected in the inner casing 390, rotor 391 is equipped with first shaft hole 333 and the second axis hole 334；
As shown in Figure 14-18 and Fig. 3, the both ends of the inner casing 390 are sealedly connected with left wallboard 321 and right wallboard respectively
317, left and right wallboard 321,317 is flute profile, and structure is consistent, is tightly connected, fills with front shroud 373 and back shroud 374 respectively
Work as fuel tank；Left wallboard 321 is equipped with third oil-through-hole 325, the 4th oil-through-hole 326, and right wallboard 317 is equipped with the 5th oil-through-hole
327, the 6th oil-through-hole；First oil-through-hole 312, third oil-through-hole 325, the 5th oil-through-hole corresponding 327, and penetrate through connection, shape
At upper oil-through-hole；Second oil-through-hole 313, the 4th oil-through-hole 326, the 6th oil-through-hole are corresponding, and penetrate through connection, form lower logical oil
Hole；Left and right 321,317 middle part of wallboard is respectively equipped with third axis hole 331, the 4th axis hole 332, the 5th axis hole, the 6th axis hole；First
Transmission shaft 328 is through connection first shaft hole 333, third axis hole 331, the 5th axis hole；Second driving shaft 329 is through the second axis of connection
Hole 334, the 4th axis hole 332, the 6th axis hole；
One end of first transmission shaft 328 and second driving shaft 329 is successively arranged from outside to inside respectively gets rid of oil sheet 339, bearing
Gland 337, bearing 340；It gets rid of oil sheet 339, bearing gland 337, bearing 340 to be respectively positioned in the slot of left wallboard 321, transmission gear
330 be set to the first transmission shaft 328 on and be located at get rid of before oil sheet 339；
As shown in figure 14, the other end of the first transmission shaft 328 and second driving shaft 329 is successively arranged from outside to inside respectively gets rid of
Oil sheet 339, driven gear 338, bearing gland 337, bearing 340；Two driven gears 338 intermesh；Get rid of oil sheet 339, from
Moving gear 338, bearing gland 337, bearing 340 are respectively positioned in right wallboard 317.
370 inner sleeve of shell has machine core 380, the left and right plush copper 315,316 of the machine core 380 and the upper card of the inner casing 370
Interface 378 and lower card interface 379 are engaged by clamping, 310,314 pairs of first inlet, outlet 371,372 and the second inlet, outlet
It answers；
Front shroud 305 is equipped with tank filler sleeve 303 and oily window 304；Back shroud 306 is equipped with tank filler sleeve 303 and oily window 304；
Above, oily window 304 is in lower section for tank filler sleeve 303；
Tank filler sleeve 303 is correspondingly arranged with upper oil-through-hole, and oily window 304 is correspondingly arranged with lower oil-through-hole；Oily window 304 is for observing
Volume read-out；
From tank filler sleeve enter volume read-out be：It is advisable with oil sheet bottom contact 1mm-10mm is got rid of；
In this way since air inlet and gas outlet form pressure difference, drive rotor makes the pinion rotation on transmission shaft, thus band
Counter changes in dynamic gauge outfit.
Claims (10)
1. a kind of Roots type flowmeter is made of gas flow volume correction instrument, gauge outfit, measuring room；Gas flow volume correction instrument
It is connect by bracket with measuring room；Gauge outfit is connect with measuring room；It is characterized in that：
The gas flow volume correction instrument is made of front cover and rear cover sealed connection, between the front cover and the rear cover
Equipped with loose-leaf, four corners of the front cover and four corners of the rear cover are fixed as one by four screws, before described
Display screen is equipped in lid；PLC, the PLC connection power supply and display screen are connected in the rear cover, covered after described be connected with it is more
A interface；
The first interface of the gas flow volume correction instrument is connect by the first cable with the gauge outfit, acquisition pulse signal,
By electron process, flow signal is changed into；
The second interface of the gas flow volume correction instrument is connect by the second cable with the pressure sensor of the measuring room,
Effect is the temperature value for acquiring measuring room；
The third mouth of the gas flow volume correction instrument is connect by third cable with the temperature sensor of the measuring room, is made
With the pressure value for being acquisition meter room；
Counter is equipped in the gauge outfit；
The measuring room is made of shell, machine core, front shroud and back shroud；
The shell is cuboid, is internally provided with the measuring room of Hollow Cylindrical Shaft shape；There are two installing port, institutes on the measuring room
Two installing ports are stated to be located in two opposites of the shell；The first inlet, outlet, institute are additionally provided on the measuring room
The first inlet, outlet is stated to be located in other two opposite of the shell, the center line of two installing ports and first into,
The central axis of gas outlet；One of remaining two opposite of the shell is equipped with indicator, is used to indicate the first inlet, outlet
The installation direction of mouth；The inner wall axial direction of the measuring room is equipped with upper card interface and lower card interface；
The machine core includes inner casing, and the inner casing is hollow tubular, and the tube wall of the inner casing is radially equipped with the second inlet, outlet
Mouthful；The first and second oil-through-hole is penetratingly equipped in the tube wall axial direction of the inner casing, two oil-through-holes are located at the top of the inner casing
And lower section, the inner casing are equipped with left and right plush copper；
Rotor is connected in the inner casing, rotor is equipped with first shaft hole and the second axis hole；
The both ends of the inner casing are sealedly connected with left wallboard and right wallboard respectively, and left and right wallboard is flute profile, and structure is consistent,
It is tightly connected respectively with front shroud and back shroud, serves as fuel tank；Left wallboard is equipped with third oil-through-hole, the 4th oil-through-hole, right wall
Plate is equipped with the 5th oil-through-hole, the 6th oil-through-hole；First oil-through-hole, third oil-through-hole, the 5th oil-through-hole are corresponding, and the company of perforation
It connects, oil-through-hole in formation；Second oil-through-hole, the 4th oil-through-hole, the 6th oil-through-hole are corresponding, and penetrate through connection, form lower logical oil
Hole；Third axis hole, the 4th axis hole, the 5th axis hole, the 6th axis hole are respectively equipped in the middle part of left and right wallboard；
First transmission shaft is through connection first shaft hole, third axis hole, the 5th axis hole；
Second driving shaft is through connection the second axis hole, the 4th axis hole, the 6th axis hole；
One end of first transmission shaft and second driving shaft is successively arranged from outside to inside gets rid of oil sheet, bearing gland, bearing respectively；Get rid of oil
Piece, bearing gland, bearing are respectively positioned in the slot of left wallboard, and transmission gear is set on the first transmission shaft and before getting rid of oil sheet
Face；
The other end of first transmission shaft and second driving shaft is successively arranged from outside to inside gets rid of oil sheet, driven gear respectively, bearing pressure
Lid, bearing；Two driven gears intermesh；Oil sheet, driven gear are got rid of, bearing gland, bearing are respectively positioned in right wallboard；
The machine core is placed in shell, and the left and right plush copper of the machine core and the upper card interface of the inner casing and lower card interface are clamped
Cooperation, first inlet, outlet are corresponding with the second inlet, outlet；
Front shroud is equipped with tank filler sleeve and oily window；Back shroud is equipped with tank filler sleeve and oily window；Above, oily window is under for tank filler sleeve
Side.
2. a kind of Roots type flowmeter as described in claim 1, it is characterised in that：The PLC is connected with GPS module and bluetooth mould
Block is used for data exchange, realizes remote operation.
3. a kind of Roots type flowmeter as described in claim 1, it is characterised in that：The power supply uses battery, and the battery is logical
Battery holder is crossed to fix.
4. a kind of Roots type flowmeter as described in claim 1, it is characterised in that：The hollow tubulose of the inner casing is " lantern "
Shape is matched with the shape of rotor.
5. a kind of Roots type flowmeter as described in claim 1, it is characterised in that：The upper card interface and lower card interface are about institute
The center line a for stating inner casing is symmetrical.
6. a kind of Roots type flowmeter as described in claim 1, it is characterised in that：The shape of the upper card interface is " bowl "
Type.
7. a kind of Roots type flowmeter as described in claim 1, it is characterised in that：The shape of the lower card interface is " circular arc "
Type.
8. a kind of Roots type flowmeter as described in claim 1, it is characterised in that：The side of the indicator labels there are three setting
Locate, pressure interface when having warming interface, pressure sensitivity interface and calibrating is corresponded at labeling.
9. a kind of Roots type flowmeter as described in claim 1, it is characterised in that：The inlet, outlet is surrounded by four
Mounting hole, four mounting holes are divided equally circumferentially.
10. a kind of Roots type flowmeter as described in claim 1, it is characterised in that：The open end of the left wallboard and right wallboard
It is respectively equipped with seal groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810650786.XA CN108827413B (en) | 2018-06-22 | 2018-06-22 | Roots flowmeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810650786.XA CN108827413B (en) | 2018-06-22 | 2018-06-22 | Roots flowmeter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108827413A true CN108827413A (en) | 2018-11-16 |
| CN108827413B CN108827413B (en) | 2020-04-03 |
Family
ID=64137553
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810650786.XA Active CN108827413B (en) | 2018-06-22 | 2018-06-22 | Roots flowmeter |
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| Country | Link |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114777865A (en) * | 2021-12-13 | 2022-07-22 | 浙江裕顺仪表有限公司 | Roots flow metering device for industrial gas prepayment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114777865A (en) * | 2021-12-13 | 2022-07-22 | 浙江裕顺仪表有限公司 | Roots flow metering device for industrial gas prepayment |
| CN114777865B (en) * | 2021-12-13 | 2023-01-31 | 浙江裕顺仪表有限公司 | Roots flow metering device for industrial gas prepayment |
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| CN108827413B (en) | 2020-04-03 |
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