CN209131748U - A kind of volumetric flowmeter - Google Patents

A kind of volumetric flowmeter Download PDF

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Publication number
CN209131748U
CN209131748U CN201822148171.5U CN201822148171U CN209131748U CN 209131748 U CN209131748 U CN 209131748U CN 201822148171 U CN201822148171 U CN 201822148171U CN 209131748 U CN209131748 U CN 209131748U
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CN
China
Prior art keywords
runner
shaft
volumetric flowmeter
rotor assembly
lower cover
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CN201822148171.5U
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Chinese (zh)
Inventor
叶多
吴波
冯光涛
吴春燕
李熙
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Chongqing Endurance Industry Stock Co Ltd
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Chongqing Endurance Industry Stock Co Ltd
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Priority to CN201822148171.5U priority Critical patent/CN209131748U/en
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Abstract

The utility model discloses a kind of volumetric flowmeter, including measuring room component and the upper cover and lower cover for being separately mounted to measuring room component upper/lower terminal, the measuring room component includes measuring room and is mounted on indoor two to be parallel to each other the rotor assembly of metering, the rotor assembly includes the runner and shaft of coaxial cooperation, and the lower end of two shafts is respectively fixed with the guide gear of the transmission that is engaged with each other.The shaft lower end is fixed on the inner face of the lower cover, and the runner is rotationally covered in the shaft and can be freely rotated around the shaft, and the guide gear is fixed on runner on the end face of lower cover one end and does not contact with the lower cover;The upper end of one of rotor assembly is by output element with the meter unit associated for metering metering signal is passed to meter unit.Volumetric flowmeter is simple and compact for structure, is easily assembled maintenance, and measuring accuracy is preferable.

Description

A kind of volumetric flowmeter
Technical field
The utility model belongs to measuring equipment technical field more particularly to a kind of for liquid or the measurement of gas flow Equipment.
Background technique
Volumetric flowmeter is most common one kind in flowmeter large family, it is directly to be carried out according to discharge fluid volume The instrument of flux cumulating.If the fixed standard volume of measuring chamber is V, by the fluid of flowmeter discharge in some time interval Fixed standard volume number be n, then the volume total amount Q of detected fluid be Q=nV.Pass through biography using counter or other elements Motivation structure measures the revolution n of rotor assembly, can show the flow Q of detected fluid.
The moving component of volumetric flowmeter has reciprocating motion and two kinds of rotary motion, common rotz flowmeter, Luo Ciliu Meter etc. belongs to rotational motion metering.At present for the volumetric flowmeter of rotary motion metering, general configuration such as Fig. 1- Shown in 2, including metering unit and upper and lower covers and display unit a1 (gauge outfit), upper and lower covers (upper cover a2, lower cover a12) cover conjunction respectively At the both ends of measuring room a14 to form a closed cavity;Be embedded with respectively at the two-port of measuring room component upper end cover a6, under The airtight cavity that end cap a9, upper and lower end cap and measuring room a14 are surrounded is measuring chute.Two are additionally provided in measuring room component mutually The parallel rotor assembly for pushing fluid media (medium) to be measured, rotor assembly include that shaft a8 and fixation are nested in shaft Runner a7 on a8, the top and bottom shaft a8 of one of rotor assembly, which respectively correspond, is equipped with output gear a3 and first Guide gear a13, output gear a3 and gauge outfit a1 are sequentially connected to export, show flow information, the lower end of another rotor assembly With the second guide gear engaged with the first guide gear a13, the shaft a8 of two rotor assembly distinguishes at its both ends It is fixedly set with bearing a11, and upper and lower side is mounted on by installation by adhering of the bearing a11 in end cap and is covered, with reality It assembly of the existing rotor assembly in measuring room a14 and is freely rotatable;Meanwhile in order to enable rotor assembly rotation it is more flexible, With suitable end clearance to guarantee measuring accuracy, also particularly in each bearing a11 towards respective institute close to the end shaft a8 End face on be pressed with a gland (upper press cover a4, lower cover a10), and by gland and corresponding end cap (upper and lower end cap) it Between add circular shim liner a5 to adjust the axial movement value of rotor assembly, avoid the end face of runner a7 and corresponding end cap End face CONTACT WITH FRICTION, generating clamping stagnation or influences measuring accuracy because end clearance is excessive.In general, gasket a5 according to It needs to be made into multi-thickness specification, and carries out the increase and decrease installation of respective numbers as needed in assembly.
Above-mentioned existing volumetric flowmeter structure can have ideal measuring accuracy, but structure is complicated, and zero Component is various, assembly difficulty, especially for the adjustment of above-mentioned end clearance, due to suitable quantity to be used, appropriate size Gasket a5, the quantity for even more needing to assemble and disassemble adjustment gasket a5 repeatedly in assembly could be completed, and after the flowmeter of this structure Phase is also not convenient for safeguarding.In view of the foregoing, this flowmeter structure is for existing flowmeter at present, particularly with small-bore Flowmeter is not able to satisfy plant produced more and more and demand that user uses.
Utility model content
Utility model aims to solve above-mentioned technical problems, provide a kind of volumetric flowmeter, the positive displacement stream Meter efficiently solves existing volumetric flowmeter, and structure is complicated, the inconvenient technical problem of assembly maintenance.
The technical solution of the utility model is as follows:
A kind of volumetric flowmeter, including measuring room component and the upper cover for being separately mounted to measuring room component upper/lower terminal And lower cover, the measuring room component include measuring room and are mounted on indoor two to be parallel to each other the rotor assembly of metering, institute The runner and shaft that rotor assembly includes coaxial cooperation are stated, the lower end of two shafts is respectively fixed with the transmission that is engaged with each other Guide gear.
The shaft lower end is fixed on the inner face of the lower cover, the runner rotationally cover in the shaft and It can be freely rotated around the shaft, the guide gear is fixed on runner on the end face of lower cover one end and does not contact with the lower cover; The upper end of one of rotor assembly is by output element with the meter unit associated for metering to transmit metering signal To meter unit.
Further, the output element is fixedly mounted on the runner on the end face of meter unit one end.
Further, the output element is output gear or the code-disc equipped with magnet steel.
Further, the output gear is directly engaged with the input gear of gauge outfit;The code-disc directly be mounted on table Signal transducer inside head cooperates to acquire the rotary metering information of rotor assembly.
Further, the runner is installed in rotation in the shaft by bearing.
Further, measuring chute is surrounded by the lower cover, upper cover and measuring room three.
Further, for the cylindric blind hole of guide gear setting, institute there are two being set on the inner face of the lower cover The inner face for stating upper cover is equipped with two cavitys for accommodating and rotating respectively for the output element and another shaft upper end.
Further, the guide gear is fixed on the end face of runner by a pair of of positioning pin and a pair of screws.
Further, the runner is waist wheel, Roots takes turns, the one of which in helical rotor.
The utility model has the beneficial effects that volumetric flowmeter documented by the utility model, without upper and lower end caps and The accessories such as shim liner, structure is simpler compact, without taking a significant amount of time the quantity of de-regulation shim liner, relative to existing For rotor assembly, the rotor component construction difference of the utility model is larger, and existing rotor assembly is as stated in the background art Guide gear, runner, the big critical component of shaft three integral type fixed connection structure, and in the rotor assembly of the utility model, Guide gear is directly anchored on the end face of runner rather than in shaft, and shaft is fixed on lower lid, and runner is rotatable Ground is mounted in shaft using shaft as rotation axis, and the bearing that existing rotor assembly is both ends of the shaft is covered in upper and lower end Mounting hole limit its rotation axis, rotor assembly is that an entirety is rotated, it is therefore desirable in the axis of upper and lower end cap Bearing bore processes and must guarantee its installation accuracy when install gland, gasket, and assembling process is complicated, error influence link compared with More, working efficiency when producing and safeguarding is all lower.It can be seen that volumetric flowmeter structure provided by the utility model is simple It is compact, it is easily assembled maintenance, measuring accuracy is preferable, is particularly suitable for 25mm and its small-caliber flow meter below.
Detailed description of the invention
Fig. 1 is existing flowmeter structure schematic diagram.
Fig. 2 is enlarged view at the I in Fig. 1.
Fig. 3 is the utility model appearance diagram.
Fig. 4 is the fractionation schematic diagram of measuring room component.
Fig. 5 is the top view removed after gauge outfit.
Fig. 6 is to remove the schematic diagram after code-disc in Fig. 5.
Fig. 7 is the perspective view of structure shown in Fig. 6.
Fig. 8 is that the runner of two rotor assembly in Fig. 7 and shaft split explosive view.
Fig. 9 is the top view of two rotor assembly.
Separated structure schematic diagram of the Figure 10 between meter unit and measuring room component.
Component label instructions: measuring room 1, lower cover 2, meter unit 3, runner 4, shaft 5, code-disc 6, guide gear 7, screw 8, positioning pin 9, blind hole 201, cavity 301.
Specific embodiment
The embodiments of the present invention is illustrated by particular specific embodiment below, those skilled in the art can be by this Content disclosed by specification understands other advantages and effect of the utility model easily.
The utility model is described in further detail with reference to the accompanying drawings and examples:
As shown in Fig. 3-9 ,-volumetric flowmeter, including measuring room component and to be separately mounted to measuring room component upper and lower The upper cover and lower cover 2 at both ends, the measuring room component include measuring room 1 and two to be parallel to each other that are mounted in measuring room 1 A rotor assembly, the rotor assembly include the runner 4 and shaft 5 of coaxial cooperation, and the lower end of two shafts 5 is respectively fixed with The guide gear 7 of one transmission that is engaged with each other.
5 lower end of shaft is fixed on the inner face of the lower cover 2, and the runner 4 is rotationally covered in the shaft 5 It is upper and 5 can be freely rotated around the shaft, the guide gear 7 be fixed on runner 4 on the end face of 2 one end of lower cover and not with it is described under Lid 2 contacts;The upper end of one of rotor assembly is by output element with 3 associated of meter unit for metering will measure Signal passes to meter unit 3.
Further, the output element is fixedly mounted on the runner 4 on the end face of 3 one end of meter unit, so that It is more compact to obtain structure, convenient for preferably installing fixed output element.
Further, the output element is output gear or the code-disc 6 equipped with magnet steel, and output gear is corresponding mechanical The mechanical gauge outfit of counting, and code-disc 6 is then used for electronic watch head.
Further, the output gear is directly engaged with the input gear of gauge outfit;The code-disc 6 directly be mounted on table Signal transducer inside head cooperates to acquire the rotary metering information of rotor assembly, so that the output signal of rotor assembly is straight It connects and passes to gauge outfit and counted, reduce volume, simplify flowmeter structure.
Further, the runner 4 is installed in rotation in the shaft 5 by bearing, is easily installed manufacture.
Further, measuring chute is surrounded by the lower cover 2, upper cover and 1 three of measuring room, is fallen into a trap compared with the existing technology For the cooperation for measuring room 1 and upper and lower end cap, structure is simpler compact, and manufacturing cost is lower.
Further, for the cylindric blind hole of the guide gear 7 setting there are two being set on the inner face of the lower cover 2 201, the inner face of the upper cover is equipped with two for accommodating and rotating respectively for the output element and another 5 upper end of shaft A cavity 301 (as shown in Figure 10), purpose are equally to reduce flowmeter volume, are easily installed use.
Further, the guide gear 7 passes through a pair of of positioning pin 9 and a pair of screws 8 is fixed on the end face of runner 4 On.
Further, the runner 4 is waist wheel, Roots takes turns, the one of which in helical rotor, to correspond at present on the market Common rotz flowmeter, Roots type flowmeter and spiral rotor flow meter.
The above embodiments are only illustrative of the principle and efficacy of the utility model, and not for limitation, this is practical new Type.Any person skilled in the art can all carry out above-described embodiment under the spirit and scope without prejudice to the utility model Modifications and changes.Therefore, such as those of ordinary skill in the art without departing from the revealed essence of the utility model All equivalent modifications or change completed under mind and technical idea, should be covered by the claim of the utility model.

Claims (9)

1. a kind of volumetric flowmeter, including measuring room component and be separately mounted to measuring room component upper/lower terminal upper cover and Lower cover, the measuring room component includes measuring room and is mounted on indoor two to be parallel to each other the rotor assembly of metering, described Rotor assembly includes the runner and shaft of coaxial cooperation, and the lower end of two shafts is respectively fixed with the transmission that is engaged with each other Guide gear;It is characterized by:
The shaft lower end is fixed on the inner face of the lower cover, and the runner rotationally covers in the shaft and can be around Shaft is freely rotated, and the guide gear is fixed on runner on the end face of lower cover one end and does not contact with the lower cover;Wherein The upper end of one rotor assembly is by output element with the meter unit associated for metering metering signal is passed to table Head part.
2. volumetric flowmeter according to claim 1, it is characterised in that: the output element is fixedly mounted on the runner On the end face of meter unit one end.
3. volumetric flowmeter according to claim 1, it is characterised in that: the output element is output gear or is equipped with The code-disc of magnet steel.
4. volumetric flowmeter according to claim 3, it is characterised in that: the output gear directly with the input tooth of gauge outfit Wheel engagement;The code-disc directly cooperates with the signal transducer being mounted on inside gauge outfit to acquire the rotary metering of rotor assembly and believe Breath.
5. volumetric flowmeter according to claim 1, it is characterised in that: the runner is installed in rotation on by bearing In the shaft.
6. volumetric flowmeter according to claim 1, it is characterised in that: measuring chute is by the lower cover, upper cover and metering Room three surrounds.
7. volumetric flowmeter according to claim 6, it is characterised in that: for institute there are two being set on the inner face of the lower cover State the cylindric blind hole of guide gear setting, the inner face of the upper cover be equipped with accommodate respectively and for the output element and Two cavitys of another shaft upper end rotation.
8. volumetric flowmeter according to claim 1, it is characterised in that: the guide gear passes through a pair of of positioning pin and one Screw is fixed on the end face of runner.
9. any one volumetric flowmeter according to claim 1-8, it is characterised in that: the runner is waist wheel, Roots One of which in wheel, helical rotor.
CN201822148171.5U 2018-12-20 2018-12-20 A kind of volumetric flowmeter Active CN209131748U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201822148171.5U CN209131748U (en) 2018-12-20 2018-12-20 A kind of volumetric flowmeter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201822148171.5U CN209131748U (en) 2018-12-20 2018-12-20 A kind of volumetric flowmeter

Publications (1)

Publication Number Publication Date
CN209131748U true CN209131748U (en) 2019-07-19

Family

ID=67249043

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201822148171.5U Active CN209131748U (en) 2018-12-20 2018-12-20 A kind of volumetric flowmeter

Country Status (1)

Country Link
CN (1) CN209131748U (en)

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