CN207473420U - A kind of electronic flowmeter - Google Patents
A kind of electronic flowmeter Download PDFInfo
- Publication number
- CN207473420U CN207473420U CN201721718294.7U CN201721718294U CN207473420U CN 207473420 U CN207473420 U CN 207473420U CN 201721718294 U CN201721718294 U CN 201721718294U CN 207473420 U CN207473420 U CN 207473420U
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- valve body
- electronic flowmeter
- adjusting spool
- adjusting
- connecting shaft
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- 238000006073 displacement reaction Methods 0.000 claims abstract description 22
- 238000009987 spinning Methods 0.000 claims abstract description 7
- 239000007789 gas Substances 0.000 description 48
- 230000000875 corresponding effect Effects 0.000 description 21
- 230000009471 action Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 238000012544 monitoring process Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000002547 anomalous effect Effects 0.000 description 1
- 210000001367 artery Anatomy 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N ferric oxide Chemical compound O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 210000003462 vein Anatomy 0.000 description 1
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Abstract
The utility model discloses a kind of electronic flowmeter, including a valve body, is provided with air inlet and gas outlet, for the inlet and outlet of gas；One stepper motor is fixed on the valve body, is received outer signals and is rotated fixed corresponding stroke；One adjusting spool, one end are arranged in the valve body, and for adjusting the circulation aperture between the air inlet and the gas outlet, the other end is connect after being pierced by the valve body with the output terminal of the stepper motor；The adjusting spool is connect by adjusting screw thread with the valve body, and axial displacement is generated in the valve body by the spinning movement of itself.In this way, by setting stepper motor, the precision of flow-rate adjustment can be greatly improved, and without adjusting manually.
Description
Technical field
The utility model is related to flow measurement fields, and in particular to a kind of electronic flowmeter.
Background technology
For oxygenerator industry generally using traditional buoys flowmeter, which needs client to adjust manually at present, and due to
The error of float and scale causes such flowmeter accuracy poor；In addition, traditional buoys flowmeter can not carry out gas flow
Monitoring, if gas flow has fuctuation within a narrow range, traditional buoys flowmeter can not be automatically to flow-rate adjustment.
In view of drawbacks described above, the utility model creator obtains this practicality newly finally by prolonged research and practice
Type.
Utility model content
To solve above-mentioned technological deficiency, the technical solution adopted in the utility model is, provides a kind of electronic flowmeter,
Including：
One valve body, is provided with air inlet and gas outlet, for the inlet and outlet of gas；
One stepper motor is fixed on the valve body, is received outer signals and is rotated fixed corresponding stroke；
One adjusting spool, one end are arranged in the valve body, for adjusting between the air inlet and the gas outlet
Circulation aperture, the other end connect after being pierced by the valve body with the output terminal of the stepper motor；
The adjusting spool is connect by adjusting screw thread with the valve body, by the spinning movement of itself in the valve body
Generate axial displacement.
Preferably, the electronic flowmeter further includes a connecting shaft, one end is connect with the output terminal of the stepper motor,
One end that the other end is pierced by the valve body with the adjusting spool is connect, and the spinning movement of the stepper motor is passed to described
Adjusting spool.
Preferably, the output terminal and the connecting shaft, the connecting shaft and among the adjusting spool two at least one
It is a to be in axial sliding connection.
Preferably, the output terminal of the connecting shaft and the stepper motor is in the radially fixed of the connecting shaft, in axial direction
It is slidably connected.
Preferably, the output terminal is flat column, the connecting shaft has with one end that the output terminal is connect
The corresponding link slot of shape；The output terminal is inserted into the link slot.
Preferably, the output terminal is fixedly connected with the connecting shaft, the connecting shaft is with the adjusting spool in axial direction
It is slidably connected.
Preferably, being additionally provided with bonnet on the valve body, the bonnet interior is provided with circular hole, and the adjusting spool passes through
The circular hole and the connection axis connection.
Preferably, the bonnet includes threaded cap and fixed part, the fixed part has external screw thread, and the valve body has interior
Screw thread, the bonnet, which is connected through a screw thread, to be fixed on the valve body；The threaded cap is arranged on the fixed part upper end and edge
It extends radially outwardly.
Preferably, being provided with recirculation hole in the valve body, the recirculation hole is connect with the air inlet, the gas outlet；
The adjusting spool lower end is provided with cynapse, and the cynapse is inserted into the recirculation hole.
Preferably, the air inlet is arranged on the both sides of the recirculation hole with the adjusting spool.
On this basis, a kind of flow control system with electronic flowmeter described above can also be provided, also
Including：
Instruction inputting device instructs for input control；
Processor receives the control instruction, and is converted to corresponding pulsed quantity and sends；
The electronic flowmeter receives the pulsed quantity, and makes corresponding actions by the stepper motor, controls gas
Body flow；
Sensor, monitors the actual value of the gas flow flowed through, and is transferred to the processor；
The processor receives the actual value, and is compared with control instruction, if not being consistent, generates new described
Pulsed quantity is sent to the electronic flowmeter, and the stepper motor is made to make corresponding modification action.
Preferably, the sensor is mounted on the electronic flowmeter rear end.
The beneficial effects of the utility model are compared with the prior art：In this way, by setting stepper motor, it can be significantly
The precision of flow-rate adjustment is improved, and without adjusting manually；Screw thread is adjusted by setting, the rotary motion of adjusting spool is converted to
Linear motion, the precision of adjusting can be further improved on the basis of before, achievees the purpose that accurately to control；And the electronics
Flowmeter structure is compact, small, is easily installed and uses；In addition, compact volume so that the electronic flowmeter can be by
The inside of oxygenerator etc. is installed on, can exclude, to the issuable interference of the appearance of oxygenerator etc., to make product appearance in this way
Industrial design has the operating space of bigger；It is simple in structure, gas flow can be not only automatically controlled, it can also be automatically to gas stream
Amount is finely adjusted, and eliminates the fluctuation of gas flow, and process is simple, convenient；And other reasons etc. can be found by monitoring in time
Caused by gas flow change, to carry out latter step processing.
Description of the drawings
In order to illustrate more clearly of the technical solution in various embodiments of the utility model, institute in being described below to embodiment
Attached drawing to be used is needed to be briefly described.
Fig. 1 is the structure chart of the electronic flowmeter of the utility model；
Fig. 2 is the sectional view of the electronic flowmeter of the utility model；
Fig. 3 is the fragmentary cross-sectional view one of the electronic flowmeter of the utility model；
Fig. 4 is the fragmentary cross-sectional view two of the electronic flowmeter of the utility model；
Fig. 5 is the structure chart one of the flow control system of the utility model；
Fig. 6 is the structure chart two of the flow control system of the utility model.
Specific embodiment
Below in conjunction with attached drawing, to the utility model, above-mentioned and other technical characteristic and advantage are described in more detail.
Embodiment 1
As shown in Figure 1, it is the structure chart of the application electronic flowmeter；With reference to Fig. 2, wherein, the electronic flowmeter packet
It includes：
One valve body 1, is provided with air inlet 12 and gas outlet 13, for the inlet and outlet of gas；
One stepper motor 2 is fixed on the valve body 1, is received outer signals and is rotated fixed corresponding stroke；
One adjusting spool 3, one end are arranged in the valve body 1, for adjusting the air inlet 12 and the gas outlet
Circulation aperture between 13, the other end are connect after being pierced by the valve body 1 with the output terminal 21 of the stepper motor 2；
The adjusting spool 3 is connect by adjusting screw thread 31 with the valve body 1, by the spinning movement of itself in the valve
Axial displacement is generated in body 1.
In this way, the adjusting to gas flow/flow velocity, the actually recirculation hole between air inlet 12 and gas outlet 13
The size of diameter is adjusted；When the circulation aperture between air inlet 12 and gas outlet 13 is needed to be adjusted, stepper motor 2
It can receive extraneous Regulate signal, and corresponding angle be rotated according to Regulate signal (characteristic of of stepper motor 2 itself is exactly can be with
The rotation for the angle being determined, and precision is very high)；Since stepper motor 2 is connect with the adjusting spool 3, institute can be driven
It states adjusting spool 3 and rotates identical angle；The adjusting spool 3 is connect with valve body 1 by adjusting screw thread 31, and motion mode is
After adjusting spool 3 rotates, due to adjusting the effect of screw thread 31, the screw of adjusting spool 3 is converted to for screw
Linear motion, wherein, the stepper motor 2 that adjusting spool 3 rotates is driven to be fixed on valve body 1, it can't be in the adjusting spool 3
Axis direction on generate displacement, therefore after adjusting spool 3 rotates, displacement can be generated in the axial direction；The adjusting spool 3
It is moved into valve body 1, the aperture of supplied gas flowing in valve body 1 can be gradually blocked, conversely, can then expand the circulation aperture；This
Sample by linear movement of the adjusting spool 3 in valve body 1, can adjust the circulation aperture between air inlet 12 and gas outlet 13
Size, and then adjust flow/flow velocity of gas.
In this way, by setting stepper motor 2, the precision of flow-rate adjustment can be greatly improved, and without adjusting manually；Pass through
Setting adjusts screw thread 31, and the rotary motion of adjusting spool 3 is converted to linear motion, can further be carried on the basis of before
The precision of top adjustment achievees the purpose that accurately to control.And the electronic flowmeter is compact-sized, and it is small, it is easily installed and makes
With.In addition, compact volume so that the electronic flowmeter can be installed in the inside of oxygenerator etc., can exclude in this way
To the issuable interference of the appearance of oxygenerator etc., the industrial design of product appearance is made to have the operating space of bigger.
In this way, the rotation amount of stepper motor 2 controls to adjust the stroke up and down of spool 3, and then the hole of 1 metering orifice of application valve body
Diameter size, the final control realized to flow.
Embodiment 2
Electronic flowmeter as described above, the present embodiment are different from part and are that the electronic flowmeter further includes
One connecting shaft 4, one end are connect with the output terminal 21 of the stepper motor 2, and the other end and the upper end of the adjusting spool 3 (are worn
Go out one end of the valve body 1) connection, the spinning movement of the stepper motor 2 is passed into the adjusting spool 3, makes the valve
Core does synchronous and identical angle rotation with the output terminal 21 of the stepper motor 2.
In this way, the stepper motor 2 and the adjusting spool 3 are connected, it is simple in structure, it is easy to connect.
Embodiment 3
Electronic flowmeter as described above, the present embodiment are different from part and are, the connecting shaft 4 and the stepping
The output terminal 21 of motor 2 is radially fixed the connecting shaft 4, and slide axially connection；In this way, the adjusting spool 3 is turning
Axial displacement can be generated when dynamic, the connecting shaft 4 is slidably connected in the axial output terminal 21 with the stepper motor 2, can disappear
(interference can influence the axial direction of adjusting spool 3 in turn for the interference generated except 3 axial displacement of adjusting spool on the output terminal 21
Displacement), and then improve the accuracy of control.
Embodiment 4
Electronic flowmeter as described above, the present embodiment are different from part and are, the output terminal 21 is flat
Column, the connecting shaft 4 and one end that the output terminal 21 connects have the corresponding link slot 41 of shape；The output terminal 21
The link slot 41 is inserted into, so as to drive 4 synchronous rotary of connecting shaft.
The cross section of the output terminal 21 is identical, in this way, the output terminal 21 and the link slot 41 are in the connecting shaft 4
Axial direction can be with relative motion.
Preferably, it is elliptical cylindroid that the flat column, which can be cross section,；Can also be cross section it be half
Round semicolumn；As long as it is not that cross section is circular cylinder, connecting shaft 4 can be driven to rotate.
Embodiment 5
Electronic flowmeter as described above, the present embodiment is different from part and is, as shown in figure 3, the output terminal
21 be cylinder, is provided at least one raised 43；One end that the connecting shaft 4 is connect with the output terminal 21 has connection
Slot 41 is provided with the inside groove 42 axially set corresponding with described raised 43 in the link slot 41, and the output terminal 21 is inserted into
The link slot 41, described raised 43 slide axially along the inside groove 42.
In this way, the output terminal 21 is when rotated, described raised 43 are stuck in corresponding inside groove 42, drive the link slot 41
(connecting shaft 4) is rotated in (connecting shaft 4) radial action；After the adjusting spool 3 generates axial displacement, link slot 41
Generate axial displacement therewith, at this point, protrusion 43 along corresponding inside groove 42 in axial displacement, to eliminate 3 axial displacement of adjusting spool
Interference, improve the accuracy to pore size control.
Embodiment 6
Electronic flowmeter as described above, the present embodiment are different from part and are, the output terminal 21 has described
Link slot 41,4 outwardly convex of connecting shaft, is inserted into the link slot 41.It is in this way, easy to use.
In the present embodiment, the setting of output terminal 21 and 4 junction of connecting shaft, in embodiment 4/5 on the contrary, still having in this way
There is elimination to interfere, improve the effect of accuracy, and easy to use.
Embodiment 7
Electronic flowmeter as described above, the present embodiment are different from part and are, the connecting shaft 4 and adjusting spool
3 in the radially fixed of the connecting shaft 4, and slide axially connection；In this way, the adjusting spool 3 can generate axial direction in rotation
Displacement, the connecting shaft 4 are slidably connected in axial direction and adjusting spool 3, can eliminate 3 axial displacement of adjusting spool to the output
The interference (interference can influence the axial displacement of adjusting spool 3 in turn) that end 21 generates, and then improve the accuracy of control.
Embodiment 8
Electronic flowmeter as described above, the present embodiment are different from part and are, the adjusting spool 3 is pierced by described
One end of valve body 1 is flat column, and the connecting shaft 4 is corresponding with shape with one end that the adjusting spool 3 connects
Link slot 41；The adjusting spool 3 is inserted into the link slot 41, so as to which the connecting shaft 4 drives the adjusting spool 3 to synchronize rotation
Turn.
The cross section that the adjusting spool 3 is inserted into one end of the link slot 41 is identical, in this way, the adjusting spool 3 with
The link slot 41 can be with relative motion in the axial direction of the connecting shaft 4.
Preferably, it is elliptical cylindroid that the flat column, which can be cross section,；Can also be cross section it be half
Round semicolumn；As long as it is not that cross section is circular cylinder, can be rotated under the drive of connecting shaft 4.
Embodiment 9
Electronic flowmeter as described above, the present embodiment is different from part and is, as shown in figure 4, the regulating valve
One end that core 3 is pierced by the valve body 1 is cylinder, is provided at least one raised 43；The connecting shaft 4 has link slot
41, the inside groove 42 axially set corresponding with described raised 43 is provided in the link slot 41, the adjusting spool 3 is inserted into institute
Link slot 41 is stated, described raised 43 slide axially along the inside groove 42.
In this way, the connecting shaft 4 is when rotated, described raised 43 are stuck in corresponding inside groove 42, drive the adjusting spool 3
In (connecting shaft 4) radial action, rotated；After the adjusting spool 3 generates axial displacement, protrusion 43 is along corresponding inside groove
42 in axial displacement, to eliminate the interference of 3 axial displacement of adjusting spool, improves the accuracy to pore size control.
Embodiment 10
Electronic flowmeter as described above, the present embodiment are different from part and are, the adjusting spool 3 is pierced by described
One end of valve body 1 has the link slot 41, and 4 outwardly convex of connecting shaft is inserted into the link slot 41.In this way, user
Just.
In the present embodiment, the adjusting spool 3 is pierced by one end of the valve body 1 and the setting of 4 junction of connecting shaft, with reality
It applies in example 4/5 on the contrary, still having in this way and eliminates interference, improve the effect of accuracy, and easy to use.
Embodiment 11
Electronic flowmeter as described above, the present embodiment are different from part and are, can be in the electronic flowmeter
There are any one in situations below：
The output terminal 21 of the stepper motor 2 is fixedly connected with the connecting shaft 4, the connecting shaft 4 and the regulating valve
Core 3 slides axially connection；
The output terminal 21 of the stepper motor 2 slides axially with the connecting shaft 4 and connect, the connecting shaft 4 with it is described
Adjusting spool 3 is fixedly connected；
The output terminal 21 of the stepper motor 2 slides axially with the connecting shaft 4 and connect, the connecting shaft 4 with it is described
Adjusting spool 3 slides axially connection.
In this way, the influence that the axial movement that can eliminate adjusting spool 3 is brought to final control accuracy.In other words,
The output terminal 21 is in axial sliding connection with the connecting shaft 4, the connecting shaft 4 at least one in the adjusting spool 3.
Embodiment 12
Electronic flowmeter as described above, the present embodiment is different from part and is, as shown in Fig. 2, on the valve body 1
Be additionally provided with bonnet 14, the bonnet 14 is internally provided with circular hole 143, the adjusting spool 3 pass through the circular hole 143 with it is described
Connecting shaft 4 connects.
In this way, facilitate processing, assembly and disassembly.
The bonnet 14 includes threaded cap 141 and fixed part 142, and the fixed part 142 has external screw thread, with the valve body
1 has internal thread, and the bonnet 14, which is connected through a screw thread, to be fixed on the valve body 1；The threaded cap 141 is arranged on described solid
Determine 142 upper end of portion and extend radially outward.In this way, aspect assembly and disassembly.
The contact surface of the threaded cap 141 and the valve body 1 is provided with static seal, in this way, can to the bonnet 14 with
The threaded connection place of the valve body 1 is sealed, and prevents from revealing.
Internal thread is provided in the circular hole 143 of the threaded cap 141, the side wall of the adjusting spool 3 is provided with external screw thread,
The internal thread is connect with the external screw thread, and the rotary motion of the adjusting spool 3 is converted to linear motion.
3 lower end of adjusting spool is surrounded with seal groove 32, and the dynamic sealing is arranged in the seal groove 32, will
It is sealed at the adjusting spool 3 and 143 inner wall of circular hole of the fixed part 142, prevents the adjusting spool 3 relatively described
Leakage is generated when fixed part 142 moves.
Recirculation hole 15 is provided in the valve body 1, the recirculation hole 15 connects with the air inlet 12, the gas outlet 13
It connects, circulates for the gas.
The recirculation hole is arranged on the lower end of the adjusting spool 3, and coaxial with the adjusting spool 3, the regulating valve
3 lower end of core is against the recirculation hole；As such, it is desirable to adjust the circulation aperture between the air inlet 12 and the gas outlet 13
When, it is only necessary to adjust the lower end of adjusting spool 3 and the distance of the recirculation hole.
3 lower end of adjusting spool is provided with cynapse 33, and the cynapse 33 is inserted into the recirculation hole, in this way, sealing effect
Fruit is more preferable.
Wherein, the air inlet 12 is arranged on the both sides of the recirculation hole 15 with the adjusting spool 3, in this way, the tune
Space where section spool 3 can obtain better seal effect.(in the case that under normal circumstances, particularly recirculation hole 15 is closed,
The air pressure of air inlet 12 is greater than the air pressure of gas outlet 13, and adjusting spool 3 is pierced by the valve body 1, needs additionally to being pierced by portion
Divide and be sealed, if adjusting spool 3 is connected with air inlet 12, then air pressure in space wants sealing with regard to bigger where it
The problems such as seeking higher, and being more prone to leakage)
Wherein, the air inlet 12 and gas outlet 13 can also be according to actual conditions into line replacement, using air inlet as going out
Gas port, gas outlet are used as air inlet.
Embodiment 13
Electronic flowmeter as described above, the present embodiment is different from part and is, as shown in figure 5, it is；Wherein,
The flow control system includes：
Instruction inputting device 5 instructs for input control；
Processor 6 receives the control instruction, and is converted to corresponding pulsed quantity and sends；
Electronic flowmeter described above receives the pulsed quantity, and makes corresponding actions by the stepper motor 2,
Control gas flow；
Sensor 7, monitors the actual value of the gas flow flowed through, and is transferred to the processor 6；
The processor 6 receives the actual value, and is compared with control instruction, if not being consistent, generates new institute
It states pulsed quantity and is sent to the electronic flowmeter, the stepper motor 2 is made to make corresponding modification action.
In this way, user inputs the flow value of oxygen/other gases of oneself demand, the flow by instruction inputting device 5
Value is transferred to processor 6 as control instruction；The processor 6 receives the control instruction, according in the control instruction
Flow value, electron flowmeter sends corresponding pulsed quantity；After stepper motor 2 in electronic flowmeter receives pulse, according to
Pulsed quantity according to the direction of setting rotates certain angle, and (signal that the processor 6 is sent to electronic flowmeter is when needed
It further includes：Rotation direction and pulsed quantity), and then adjust the size of the gas flow by electronic flowmeter；The sensor 7 is examined
The actual value of the gas flow of flow measurement warp, and processor 6 is transferred data to, if flow value and client that sensor 7 is fed back are defeated
The flow value entered is consistent, then electronic flowmeter keeps current working condition, if the flow value that sensor 7 is fed back is inputted with client
Flow value it is inconsistent, the stepper motor 2 that processor 6 then sends corresponding pulse/pulsed quantity electron flowmeter makes correspondence
Modification action.Then sensor 7 reads again the actual value of gas flow and is transferred to processor 6 and compares, until actual flow
Until value is consistent with client's inlet flow magnitude.
It is simple in structure in this way, gas flow can be not only automatically controlled, (in actual treatment gas flow, due to machinery
The influence of problem etc., the actual value of gas flow have small fluctuation, and actual flow is caused to generate error, is also needed at this time more
Secondary to manually adjust, process is cumbersome) gas flow can also be finely adjusted automatically, the fluctuation of gas flow is eliminated, process is simple,
It is convenient；And by monitoring can find other reasons (mechanical failure) etc. in time caused by gas flow change, it is latter to carry out
Step processing.
In this way, user only need by input unit input target gas flow, system can automatically by flow adjust to
Desired value does not need to user and is frequently adjusted, simple and convenient；It is safe.
Wherein, the stepper motor 2 is the opened loop control motor that electric impulse signal is changed into angular displacement or displacement of the lines.
In the case of non-overload, the rotating speed of motor, the position stopped being solely dependent upon the frequency and umber of pulse of pulse signal, without being loaded
The influence of variation, as soon as when step actuator receives a pulse signal, its Driving Stepping Motor 2 rotates one by the direction of setting
A fixed angle, referred to as " step angle ", its rotation are run step by step with fixed angle.It can be by controlling arteries and veins
Number is rushed to control angular displacement, so as to achieve the purpose that accurate positionin；Electricity can be controlled by controlling pulse frequency simultaneously
The speed and acceleration of machine rotation, so as to achieve the purpose that speed governing.
Embodiment 14
Flow control system as described above, the present embodiment is different from part and is, as shown in fig. 6, the flow
Control system further includes an alarm modules 8, and the alarm modules 8 are connect with the processor 6, to described in the processor 6
Actual value is recorded with the situation that the control instruction is not consistent, right after the number or be not consistent of not being consistent persistently reaches threshold value
Outgoing goes out alarm.
In this way, it can externally be sent out after there was a mechanical failure or reasons is waited to cause gas flow that can not restore for a long time
Alarm avoids more heavy losses.
The alarm modules 8 are also connect with the sensor 7, the actual value of gas flow of the sensor 7 in monitoring
After suddenly change occurs, to 8 signal an alert of alarm modules, the alarm modules 8 externally send out alarm.It in this way, can
To find (because of generations such as mechanical reason or breakages) anomalous variation of gas flow in time, so as to handle as early as possible, damage is reduced
It loses.
The alarm modules 8 can be alarm, and externally sound the alarm sound；The alarm modules 8 or buzzing
Device；The alarm modules 8 or flash lamp, externally send out alarm light；The alarm modules 8 may be that other have
The device of prompting function, as long as can externally be reminded；The alarm modules 8 can also be according to actual conditions, will be upper
Stating may integrated treatment.
Embodiment 15
Flow control system as described above, the present embodiment are different from part and are that described instruction input unit 5 is
Display screen with operation interface, user input the gas flow values of demand in operation interface, and display screen is by the gas of input
Body flow value is sent to the processor 6 as control instruction.In this way, it is easy to use, convenient for displaying.
Embodiment 16
Flow control system as described above, the present embodiment are different from part and are, the sensor 7 is mounted on institute
Electronic flowmeter rear end is stated, in this way, convenient for being detected to the gas flow that electronic flowmeter flows out, eliminates gas stream all
Flowed fluctuation caused by the reason of road etc. improves the accuracy of detection data.
Embodiment 17
Flow control system as described above, the present embodiment are different from part and are, the processor 6 is STM32
Chip is mainly used to handle various data according to the program of input, and 2 driving chip of stepper motor is ULN2003,7 type of sensor
Number be OCS-3F (ultrasonic wave oxygen concentration flow sensor 7).
In the application, the nouns of locality such as upper end, lower end, upper part, lower part for using, are with the electron stream in described Fig. 1
The judgement carried out based on gauge vertical display；If after the electronic flowmeter is put according to other positions, the corresponding noun of locality
It can change, but the relative position of various components still remains unchanged in electronic flowmeter, those skilled in the art are to this Shen
Please in content when being understood, this kind of situation should be considered.
The above is only the preferred embodiment of the present invention, is merely illustrative for the utility model, and
It is unrestricted.Those skilled in the art understands, can be to it in the spirit and scope limited in the utility model claims
Many changes are carried out, are changed or even equivalent, but fall in the scope of protection of the utility model.
Claims (10)
1. a kind of electronic flowmeter, which is characterized in that including：
One valve body, is provided with air inlet and gas outlet, for the inlet and outlet of gas；
One stepper motor is fixed on the valve body, is received outer signals and is rotated fixed corresponding stroke；
One adjusting spool, one end are arranged in the valve body, for adjusting the stream between the air inlet and the gas outlet
Through-hole diameter, the other end are connect after being pierced by the valve body with the output terminal of the stepper motor；
The adjusting spool is connect by adjusting screw thread with the valve body, is generated in the valve body by the spinning movement of itself
Axial displacement.
2. electronic flowmeter as described in claim 1, which is characterized in that the electronic flowmeter further includes a connecting shaft,
One end is connect with the output terminal of the stepper motor, and one end that the other end is pierced by the valve body with the adjusting spool is connect, will
The spinning movement of the stepper motor passes to the adjusting spool.
3. electronic flowmeter as claimed in claim 2, which is characterized in that the output terminal and the connecting shaft, the connection
Axis is in axial sliding connection at least one among the adjusting spool two.
4. electronic flowmeter as claimed in claim 3, which is characterized in that the connecting shaft is described defeated with the stepper motor
Outlet is radially fixed the connecting shaft, and slide axially connection.
5. electronic flowmeter as claimed in claim 4, which is characterized in that the output terminal be flat column, the company
Spindle and one end that the output terminal connects have the corresponding link slot of shape；The output terminal is inserted into the link slot.
6. electronic flowmeter as claimed in claim 3, which is characterized in that the output terminal is fixedly connected with the connecting shaft,
The connecting shaft slides axially with the adjusting spool and connect.
7. the electronic flowmeter as described in any claim in claim 2-6, which is characterized in that also set up on the valve body
There is bonnet, the bonnet interior is provided with circular hole, and the adjusting spool passes through the circular hole and the connection axis connection.
8. electronic flowmeter as claimed in claim 7, which is characterized in that the bonnet includes threaded cap and fixed part, described
Fixed part has external screw thread, and the valve body has internal thread, and the bonnet, which is connected through a screw thread, to be fixed on the valve body；It is described
Threaded cap is arranged on the fixed part upper end and extends radially outward.
9. the electronic flowmeter as described in any claim in claim 1-6, which is characterized in that be provided in the valve body
Recirculation hole, the recirculation hole are connect with the air inlet, the gas outlet；The adjusting spool lower end is provided with cynapse, described
Cynapse is inserted into the recirculation hole.
10. electronic flowmeter as claimed in claim 9, which is characterized in that the air inlet is arranged on the adjusting spool
The both sides of the recirculation hole.
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|---|---|---|---|
| CN201721718294.7U CN207473420U (en) | 2017-12-11 | 2017-12-11 | A kind of electronic flowmeter |
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| CN201721718294.7U CN207473420U (en) | 2017-12-11 | 2017-12-11 | A kind of electronic flowmeter |
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| CN207473420U true CN207473420U (en) | 2018-06-08 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107842639A (en) * | 2017-12-11 | 2018-03-27 | 常州中进医疗器材股份有限公司 | A kind of electronic flowmeter and the flow control system with the flowmeter |
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2017
- 2017-12-11 CN CN201721718294.7U patent/CN207473420U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107842639A (en) * | 2017-12-11 | 2018-03-27 | 常州中进医疗器材股份有限公司 | A kind of electronic flowmeter and the flow control system with the flowmeter |
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