CN207395832U - Rocking arm folded plate component in diaphragm gas meter, flow meter - Google Patents
Rocking arm folded plate component in diaphragm gas meter, flow meter Download PDFInfo
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- CN207395832U CN207395832U CN201721461217.8U CN201721461217U CN207395832U CN 207395832 U CN207395832 U CN 207395832U CN 201721461217 U CN201721461217 U CN 201721461217U CN 207395832 U CN207395832 U CN 207395832U
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- folded plate
- rocking arm
- vertical shaft
- flow meter
- gas meter
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Abstract
The utility model discloses the rocking arm folded plate components in a kind of diaphragm gas meter, flow meter, including folded plate, rocking arm and vertical shaft, folded plate is used for that the diaphragm in gas meter, flow meter is driven to move back and forth; rocking arm is fixedly connected with one end of vertical shaft; folded plate is equipped with location hole; the other end insertion location hole of vertical shaft; have gap between the other end and location hole of vertical shaft; the gap is used for adjusting the angle between folded plate and rocking arm; after the completion of the angle adjustment between folded plate and rocking arm, freezing plastic is poured into gap and then fixes the other end of folded plate and vertical shaft.The rocking arm folded plate component improves the measuring accuracy of diaphragm gas meter, flow meter.
Description
Technical field
The utility model is related to mechanical instrument, the rocking arm folded plate component in more particularly to a kind of diaphragm gas meter, flow meter.
Background technology
Diaphragm gas meter, flow meter is a kind of mechanical instrument, and the motive force of motion of membrane is the gas by gas meter, flow meter import and export
Pressure differential.Its driving source is to enter the one side intracavitary of membrane by the tested gas for being higher than normal pressure, generated pressure, push every
Film is to the motive force (torque that the vertical shaft original place that namely membrane is affected rotates) that opposite side is mobile and generates, when membrane moves on to
During the position of the limit (also having referred to as dead point) of opposite side, torque, which no longer generates, can allow membrane to return to the power of coming, and must just lean on the
Two membranes generate same power previous membrane to be driven to do return movement in succession；When the gas outlet for changing first membrane is
During air inlet, the opposite side of this membrane has the motive force of gas and continues to do back and forth movement again, and can also change second
The moving direction of membrane.The vertical shaft that membrane is affected does reciprocal pendulum motion, goes to affect one to share by its swing rod, connecting rod
Crank axle, when torque that crank axle receives differs certain cycle (90 °), with regard to that can accomplish continuous rotation, and by its band
Movable pulley come change the direction of air inlet/outlet and drive counting device, achieve the purpose that continuous automatic metering.
As shown in Figure 1, diaphragm gas meter, flow meter is mostly by two capsule rooms 10,20, two epitheliums 30 of axis, rotary valve 40, pull rod 70, song
Handle 50, connecting rod 60 and the counter composition to link therewith.Each can back and forth turn over therebetween there are one positioning in two capsule rooms 10
The dynamic flexible epithelium 30 of transhipment is divided into four rooms of variable volume.Diaphragm gas meter, flow meter has many since structure is different
Type, but its measuring principle is substantially the same, and equally follows above-mentioned basic principle design and manufacture.It is that combustion gas is made to enter appearance
The constant measuring room of product, discharges it after being full of, and by certain special entity, will inflate, the cycle-index of exhaust is converted
(it is usually m into volume unit3), be transferred to the external instruction device of gas meter, flow meter, directly read combustion gas by cubical content.By
In making, gas discharge inside measuring room is relatively difficult, thus be generally equipped with two or more measuring rooms alternately into
Row inflation and exhaust.Since the charge, exhaust of single metering room is discontinuous, nor gas meter, flow meter can be rotated, because
This diaphragm gas meter, flow meter generally there are four measuring room, it using gas meter, flow meter air inlet 80,90 combustion gas of gas outlet pressure differential as moving
Power promotes the diaphragm chuck assembly between two adjacent measuring rooms to move in a straight line, and passes through specially designed linkage to make
The regular alternately open and close of valve cap, make crank move in a circle, so that gas meter, flow meter reaches the continuous mesh supplied and measure
's.
As shown in Fig. 2, it shows a formula circle valve film gas meter, flow meter outside a kind of existing rocking arm right angle.Movement is using one
Change the plastic part of injection molding, two-in-one circular rotary valve structure, revolution volume is 1.2L.The center of this circle valve is one logical
There are the central shaft 3 of a positioning in hole, centre, are a crank gears on central shaft 3, the connecting rod b that swings by of rocking arm a acts on crank
On c, crank gear rotation is pulled, sets below crank gear and to stir circular valve there are one auxiliary crank cf and rotate, realize two chambers
Body achievees the purpose that continuous metering alternately into outlet.When central shaft 3 rotates a circle, epithelium 51 and epithelium 52 respectively do once past
Initial position is moved back into again, and the gas volume amount discharged at this time is called " single-revolution volume ", referred to as " revolution volume ", is denoted as
Vc.When determining the revolution n of central shaft 3, so that it may calculate the integrated flow value q (q=nVc) of diaphragm watch.It can from Fig. 2
Go out, when central shaft 3 rotates, crank c drives rocking arm a to swing by connecting rod b, and rocking arm a is fixedly connected with the upper end of vertical shaft 1, rocking arm a
Swing rotates 1 original place of vertical shaft, and 1 lower section connection folded plate 2 of vertical shaft, folded plate 2 is swung therewith, past so as to which epithelium (51,52) be driven to do
Multiple movement.
Theoretically, the size of actual revolution volume is related with the swing extreme position of epithelium depth D and folded plate, theoretically
It says, the swing extreme position of folded plate should match with epithelium depth D, i.e., when folded plate is located at lateral limit position, epithelium is located just
In the state opened completely, i.e., situation shown in Fig. 2, otherwise actual revolution volume ratio design revolution volume is less than normal.If conversely, folding
The lateral limit position of plate is more than epithelium depth, then can not be stretched out because of epithelium causes crank axle that can not be rotated further,
It can not measure.
In conclusion the swing extreme position of folded plate is most important for the measuring accuracy of diaphragm watch.The pendulum of folded plate
Extreme position is moved by the assembly technology of relative angle between fixed folded plate and rocking arm to ensure, Industry code requirements rocking arm and folding
Relative angle between plate is 38 ° 18 ' ± 1 °, can ensure that the error of indication of diaphragm gas meter, flow meter meets national standard GB/ within this range
The regulation of the T6968-2011 limits of error.
At present, as shown in Fig. 3 to 5, the annular knurl 11 on vertical shaft 1 and rocking arm a and folding are passed through between rocking arm a, folded plate 2, vertical shaft 1
The location hole interference fit installation of plate 2.This mounting means has the shortcomings that technology as is evident below or deficiency, that is, passes through vertical shaft
On annular knurl rocking arm and folded plate are fixed, influenced by the manufacturing process of vertical shaft annular knurl, annular knurl is parallel with vertical shaft center line
Degree has certain deviation so that when annular knurl is pressed into rocking arm and folded plate location hole, vertical shaft can rotate slightly, cause the phase of rocking arm and folded plate
It is larger to angular deviation.And annular knurl thread rolling technique influence it is difficult to ensure that, it is parallel with vertical shaft center line to influence vertical shaft annular knurl
Degree.In addition, the positioning of the angle of folded plate and rocking arm is without fixed reference, the cooperation of vertical shaft and rocking arm, the cooperation of vertical shaft and folded plate, positioning
Frock is likely to occur the offset on position in assembling process.
The information for being disclosed in the background section is merely intended to increase the understanding to the general background of the utility model, and
It is not construed as recognizing or implies that the information structure has been existing well known to persons skilled in the art in any form
Technology.
Utility model content
The purpose of this utility model is to provide the rocking arm folded plate components in a kind of diaphragm gas meter, flow meter, improve diaphragm combustion gas
The measuring accuracy of table.
To achieve the above object, the utility model provides the rocking arm folded plate component in a kind of diaphragm gas meter, flow meter, including folding
Plate, rocking arm and vertical shaft, folded plate are used for that the diaphragm in gas meter, flow meter is driven to move back and forth, and rocking arm is fixedly connected with one end of vertical shaft,
Folded plate is equipped with location hole, and the other end insertion location hole of vertical shaft has gap, the gap between the other end and location hole of vertical shaft
For adjusting the angle between folded plate and rocking arm, after the completion of the angle adjustment between folded plate and rocking arm, solidification is poured into gap
Glue and then the other end of folded plate and vertical shaft is fixed.
Preferably, the other end of vertical shaft is machined with plane along its axial direction, is equipped with towards the side wall in the location hole of plane
Boss, gap are located between plane and boss.
Preferably, fixation is inlayed in one end of rocking arm and vertical shaft by injection.
Compared with prior art, the utility model has the advantages that：Pass through the other end and folded plate in vertical shaft
Gap between location hole is set, the angle between folded plate and rocking arm is finely adjusted when being assembled convenient for vertical shaft and folded plate, is so shaken
The precision of relative angle between arm and folded plate is improved, then folded plate drives epithelium to carry out reciprocal flip-flop movement, and one back and forth
The revolution volume accuracy of generation improves, and reduces the error of indication of diaphragm gas meter, flow meter, improves the measuring accuracy of diaphragm gas meter, flow meter.
Description of the drawings
Fig. 1 is the measuring principle schematic diagram of existing diaphragm gas meter, flow meter；
Fig. 2 is the fundamental diagram of a formula circle valve film gas meter, flow meter outside existing rocking arm right angle；
Fig. 3 is the installation diagram of rocking arm, folded plate and vertical shaft in the gas meter, flow meter in Fig. 2；
Fig. 4 is the sectional arrangement drawing of rocking arm, folded plate and vertical shaft in the gas meter, flow meter in Fig. 2；
Fig. 5 is the assembling plan view of rocking arm, folded plate and vertical shaft in the gas meter, flow meter in Fig. 2；
Fig. 6 is the installation diagram of the rocking arm folded plate component in diaphragm gas meter, flow meter according to the present utility model；
Fig. 7 is the sectional view of the rocking arm folded plate component in diaphragm gas meter, flow meter according to the present utility model；
Fig. 8 is the partial enlarged view of the rocking arm folded plate component in diaphragm gas meter, flow meter according to the present utility model.
Specific embodiment
Below in conjunction with the accompanying drawings, specific embodiment of the present utility model is described in detail, it is to be understood that this practicality
New protection domain is not restricted by specific implementation.
Unless otherwise explicitly stated, otherwise in entire disclosure and claims, term " comprising " or its change
It changes such as "comprising" or " including " etc. and will be understood to comprise stated element or component, and do not exclude other members
Part or other components.
As shown in Figure 6 to 8, the rocking arm folded plate in a kind of diaphragm gas meter, flow meter of specific embodiment of the present invention
Component, including folded plate 23, rocking arm 22 and vertical shaft 21, folded plate 23 is used for that the diaphragm in gas meter, flow meter is driven to move back and forth, rocking arm 22
Be fixedly connected with one end of vertical shaft 21, folded plate 23 be equipped with location hole, vertical shaft 21 the other end insertion location hole, vertical shaft 21 it is another
There is gap 231, which is used for adjusting the angle between folded plate 23 and rocking arm 22, when folded plate 23 between end and location hole
After the completion of angle adjustment between rocking arm 22, freezing plastic is poured into gap 231 and then by the other end of folded plate 23 and vertical shaft 21
It is fixed.
In said program, by setting gap 231 between the location hole of the other end of vertical shaft 21 and folded plate 23, convenient for vertical
Axis 21 and folded plate 23 are finely adjusted the angle between folded plate 23 and rocking arm when assembling because the swing extreme position of folded plate for
Most important for the measuring accuracy of diaphragm watch, the swing extreme position of folded plate passes through relative angle between fixed folded plate and rocking arm
Ensureing, relative angle is ensured by assembly technology between existing folded plate and rocking arm, but just as dividing in the introduction
As analysis, manufacture and assembling all can bring deviation to relative angle between folded plate and rocking arm.So this programme passes through between setting
Gap 231 can be finely adjusted angle A NG (referring to Fig. 5) in assembling process, be poured into when angle adjustment is suitable to gap
The fixation between the other end of vertical shaft 21 and folded plate 23 can be realized in freezing plastic, and freezing plastic can select UV glue, pass through ultraviolet light
4s rapid-curing cutbacks are irradiated, folded plate will not rotate compared with vertical shaft, the final measuring accuracy for ensureing diaphragm gas meter, flow meter.As another kind
Form of construction work, can the first encapsulating in folded plate location hole, be packed into vertical shaft, then adjust the angle, after the completion of angle adjustment, use ultraviolet light
Irradiation heating consolidates gelling, and then the other end of folded plate and vertical shaft is fixed.
As a kind of preferred embodiment, the other end of vertical shaft 21 is machined with plane along its axial direction, towards the location hole of plane
Interior side wall is equipped with boss, and gap 231 is located between plane and boss (referring to Fig. 8).It so designs, it is determined that vertical shaft and folding
The angle reference for assembling of plate, the angular deviation that vertical shaft rotating is avoided to bring.Plane may be employed radial direction milling 1mm and be formed, simultaneously
The location hole of folded plate 23 is made to the boss of a 1mm, boss is engaged with 21 radial direction milling depth of vertical shaft, but need to leave seam
Gap, to be used as encapsulating.The purpose of encapsulating is to prevent vertical shaft from being rotated compared with rocking arm, can solve gas meter, flow meter in pressure vertical shaft
When, angular deviation problem that folded plate, rocking arm and vertical shaft twist and bring when coordinating.
As a kind of preferred embodiment, fixation is inlayed in rocking arm 22 and one end of vertical shaft 21 by injection.In the present solution, pass through
Fixation is inlayed in injection, and rocking arm 22 and vertical shaft 21 are substantially an entirety, inclined there is no assembling as the benchmark of angle positioning
Difference.
To sum up, the rocking arm folded plate component in the diaphragm gas meter, flow meter of the present embodiment, passes through the other end and folded plate in vertical shaft 21
Gap 231 is set between 23 location hole, when being assembled convenient for vertical shaft 21 and folded plate 23 to the angle between folded plate 23 and rocking arm into
Row fine tuning, the precision of the relative angle between such rocking arm and folded plate are improved, then folded plate 23 drives epithelium back and forth to be turned over
Transhipment is dynamic, and a revolution volume accuracy generated back and forth improves, and reduces the error of indication of diaphragm gas meter, flow meter, improves diaphragm combustion
The measuring accuracy of gas meter.
The description of the foregoing specific exemplary embodiment to the utility model is in order to illustrate and illustration purpose.These
Description is not wishing to for the utility model to be defined to disclosed precise forms, and it will be apparent that according to the above instruction, can carry out
Many change and variations.The purpose of selecting and describing the exemplary embodiment is that explain the certain principles of the utility model
And its practical application, so that those skilled in the art can realize and utilize a variety of examples of the utility model
Property embodiment and various chooses and changes.The scope of the utility model is intended to by claims and its waits similar shapes
Formula is limited.
Claims (3)
1. the rocking arm folded plate component in a kind of diaphragm gas meter, flow meter, including folded plate, rocking arm and vertical shaft, the folded plate is used for driving combustion
Diaphragm in gas meter moves back and forth, which is characterized in that the rocking arm is fixedly connected with one end of the vertical shaft, and the folded plate is equipped with
Location hole, the other end of the vertical shaft is inserted into the location hole, between having between the other end of the vertical shaft and the location hole
Gap, the gap are used for adjusting the angle between the folded plate and the rocking arm, the angle between the folded plate and the rocking arm
After the completion of adjustment, freezing plastic is poured into the gap and then fixes the other end of the folded plate and the vertical shaft.
2. the rocking arm folded plate component in diaphragm gas meter, flow meter according to claim 1, which is characterized in that the vertical shaft it is another
End is machined with plane along its axial direction, is equipped with boss towards the side wall in the location hole of the plane, the gap is located at described
Between plane and the boss.
3. the rocking arm folded plate component in diaphragm gas meter, flow meter according to claim 1, which is characterized in that the rocking arm with it is described
One end of vertical shaft fixation is inlayed by injection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721461217.8U CN207395832U (en) | 2017-11-06 | 2017-11-06 | Rocking arm folded plate component in diaphragm gas meter, flow meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721461217.8U CN207395832U (en) | 2017-11-06 | 2017-11-06 | Rocking arm folded plate component in diaphragm gas meter, flow meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207395832U true CN207395832U (en) | 2018-05-22 |
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ID=62324718
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721461217.8U Active CN207395832U (en) | 2017-11-06 | 2017-11-06 | Rocking arm folded plate component in diaphragm gas meter, flow meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207395832U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111069884A (en) * | 2020-01-14 | 2020-04-28 | 中船重工鹏力（南京）智能装备系统有限公司 | Automatic rocker arm mounting device for meter and assembling method thereof |
-
2017
- 2017-11-06 CN CN201721461217.8U patent/CN207395832U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111069884A (en) * | 2020-01-14 | 2020-04-28 | 中船重工鹏力（南京）智能装备系统有限公司 | Automatic rocker arm mounting device for meter and assembling method thereof |
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