CN206223115U - Plunger displacement pump pitchometer - Google Patents
Plunger displacement pump pitchometer Download PDFInfo
- Publication number
- CN206223115U CN206223115U CN201621126051.XU CN201621126051U CN206223115U CN 206223115 U CN206223115 U CN 206223115U CN 201621126051 U CN201621126051 U CN 201621126051U CN 206223115 U CN206223115 U CN 206223115U
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- Prior art keywords
- light
- plunger
- circuit
- displacement pump
- plunger displacement
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Abstract
The utility model discloses a kind of plunger displacement pump pitchometer,For in the prior art cannot direct measurement plunger displacement pump pitch problem,There is provided following technical scheme,Including supporting table,Supporting table is provided with the power part of driving plunger rotation and is mutually butted on plunger to measure detector for displacement measuring of the plunger along pump housing axial displacement,Power part is provided with the rotating disk with power part synchronous axial system,Rotating disk is provided with the loophole for running through vertically,Supporting table is located at rotating disk axial direction both sides and is provided with light detection means,Whether the light that light detection means send according to itself detects pulse signal through loophole with output light,Whether counting device is counted in response to light detection pulse signal and is overflowed with output control signal according to counting,On-off circuit controls power part start and stop in response to control signal break-make and by break-make,When counting device overflows,On-off circuit disconnects controlling power part to stop operating,Whole detection process is without crossing multioperation,Measurement is simple and convenient.
Description
Technical field
The utility model is related to a kind of detection instrument of pump, more specifically, it relates to a kind of plunger displacement pump pitchometer.
Background technology
Plunger displacement pump is an important device of hydraulic system, and it is moved back and forth by plunger in cylinder body, makes seal operation
The volume of cavity volume changes to realize oil suction, force feed.Plunger displacement pump has rated pressure high, compact conformation, efficiency high and flow
Easy to adjust the advantages of, being widely used in high pressure, big flow and flow needs the occasion of regulation, such as hydraulic press, engineering machine
In tool and ship.
A kind of axial plunger pump of in the market, including the pump housing and the plunger that is threaded in the pump housing, when in use, post
Plug rotation is then moved up and down in the pump housing, so as to realize the suction of pump, so the accuracy of pitch directly influences plunger displacement pump
The accuracy of discharge capacity, and do not have a kind of device of suitable direct detection plunger displacement pump pitch in the prior art.
Utility model content
In view of the shortcomings of the prior art, the purpose of this utility model is to provide a kind of plunger displacement pump pitchometer,
Having the advantages that can simple and convenient measurement plunger displacement pump pitch.
To achieve the above object, the utility model provides following technical scheme：
A kind of plunger displacement pump pitchometer, including for the supporting table of non-movable piston pump, the supporting table is provided with driving
The power part of plunger rotation and plunger is mutually butted on to measure detector for displacement measuring of the plunger along pump housing axial displacement, the power
Portion is provided with the rotating disk with power part synchronous axial system, and the rotating disk is provided with the loophole for running through vertically, and the supporting table is located at
Rotating disk axial direction both sides are provided with light detection means, and whether the light that the light detection means send according to itself is through printing opacity
Pulse signal is detected in hole with output light, and the light detection means are electrically connected with to be carried out in response to light detection pulse signal
Count and whether overflowed with the counting device of output control signal according to counting, the counting device is electrically connected with response to control
Signal break-make processed and by break-make control power part start and stop on-off circuit；
When counting device overflows, the on-off circuit disconnects controlling power part to stop operating.
Using above-mentioned technical proposal, power part drives rotating disk synchronous axial system, rotating disk to be provided with while driving plunger rotation
Loophole, light detection means are arranged at the both sides of rotating disk axial direction and whether transmitted light emitter sends according to loophole
Light detects pulse signal with output light, then the umber of pulse of light detection pulse signal is the number of turns for reacting plunger rotation, meter
Whether counting apparatus detect pulse signal to be counted and are overflowed with output control signal according to counting, so-called meter in response to light
Number spilling is to count to exceed maximum, and after spilling is counted, on-off circuit is turned in response to control signal disconnection with leaving the motor off
It is dynamic, so that the number of turns that motor is rotated is the maximum for counting, so the reading as plunger displacement pump that detector for displacement measuring is detected is rotated
The pitch of the count maximum number of turns, whole detection process is measured simple and convenient without crossing multioperation.
Preferably, the light detection means include that the light for sending IR for being arranged at rotation dish side is sent out
Transmit-receive radio road and be arranged at rotating disk opposite side for receiving the light receiver circuit of IR, the light receiver circuit according to
Whether receive in loophole and pulse signal is detected with output light through the IR for coming.
Using above-mentioned technical proposal, light radiating circuit and light receiver circuit are arranged on the both sides of rotating disk, in rotating disk
When being rotated with power part, loophole is constantly passed through between light radiating circuit and light receiver circuit, when printing opacity hole position
When between light radiating circuit and light receiver circuit, it is red through what is come that light receiver circuit can receive loophole
UV light, so that light receiver circuit is according to whether receive loophole through the light for coming to determine power part and plunger
The number of turns of rotation simultaneously exports corresponding counting pulse signal, it is not necessary to artificial counting, brings conveniently.
Preferably, the light receiver circuit is included for detecting light intensity and exporting detection corresponding with light intensity
The test section of signal and the comparing section with light intensity reference signal, the comparing section are electrically connected with and compare with test section
Detection signal detects pulse signal with the magnitude of voltage size of light intensity reference signal with output light.
Using above-mentioned technical proposal, test section is used to detect light intensity and exports the detection signal of reflection light intensity,
But be not that normal light intensity can also make test section error detection have received the IR of staff reflection, so than
There is reference signal corresponding with datum ray intensity compared with portion, comparing section is by the voltage of the magnitude of voltage of detection signal and reference signal
Value is compared, and when there is the reflection IR more than datum ray intensity to be irradiated next, now the size of detection signal is big
In the size of reference signal, only now comparing section just exports the Rotating speed measring pulse corresponding with IR state is detected
Signal, so as to avoid the interference of the light such as sunlight and light, makes detection more accurate.
Preferably, the comparing section is LM339 type comparator circuits.
Using above-mentioned technical proposal, LM339 type comparator circuits are the comparator circuit of specialty, and its offset voltage is small, electricity
Source voltage is wide, the selection that the current potential of output end can be flexible, brings facility, additionally, LM339 working stabilities, resist dry
Disturb ability strong, so detection is accurate.
Preferably, the counting device includes the counting circuit being electrically connected with light detection means and based on switching
The adjustment portion of number maximum.
Using above-mentioned technical proposal, counting circuit is counted in response to the triggering of light detection pulse signal, and
Different control signals are exported when maximum is counted up to, and adjustment portion can as needed set the size of count maximum,
Such that it is able to the number of turns for being convenient for people to need to carry out setting plunger rotation.
Preferably, the counting circuit is 74LS290 type counter circuits.
Using above-mentioned technical proposal, 74LS290 type counters have binary system, quinary, senary, the decimal system etc. various
Connection, so selection can be user-friendly for as needed using corresponding connection.
Preferably, the on-off circuit is transistor switching circuit.
Using above-mentioned technical proposal, transistor switching circuit does not have movable contact partly, therefore does not have the worry of abrasion,
Can be fast using the unlimited switch that repeatedly, the responsiveness of transistor switching circuit is more general, the opening and closing time of general switch is
Calculated with millisecond, and transistor switching circuit is then with microsecond meter, transistor switching circuit is not quivered phenomenon, using three poles
Pipe on-off circuit is driven during inductive load, in the moment of switch open, does not have spark generation, safer.
Preferably, the supporting table is provided with the fixed seat for placing plunger displacement pump, is threaded with the fixed seat
Base is worn to abut the fastener of plunger displacement pump.
Using above-mentioned technical proposal, plunger displacement pump is mutually butted on by fastener and fixed seat jointly, is realized by static friction
The fixation of plunger displacement pump, limits the movement of the plunger displacement pump in measurement, enhances the accuracy of detection.
In sum, the utility model has the advantages that：
1. plunger rotates a fixing turn under the drive of power part, the reading as plunger that now detector for displacement measuring is detected
Pump rotates the pitch of the count maximum number of turns, and whole detection process is measured simple and convenient without crossing multioperation；
2. loophole constantly with rotating disk rotate, light receiver circuit according to whether receive loophole through come it is red
The light that outgoing transmit-receive radio road sends, without human metering, is brought just with measuring the number of turns of power part and plunger rotation
Profit；
3. plunger displacement pump is mutually butted on by fastener and fixed seat jointly, the fixation of plunger displacement pump is realized by static friction, limited
The movement of the plunger displacement pump in measurement has been made, the accuracy of detection has been enhanced.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model, for illustrating supporting table above section；
Fig. 2 is structural representation of the present utility model, for illustrating supporting table internal structure；
Fig. 3 is the enlarged diagram in A portions in Fig. 2；
Fig. 4 is theory diagram of the present utility model；
Fig. 5 is the circuit theory diagrams of light detection means；
Fig. 6 is the circuit theory diagrams of counting device；
Fig. 7 is the circuit theory diagrams of on-off circuit.
In figure：1st, supporting table；11st, support；12nd, detector for displacement measuring；13rd, thimble；2nd, fixed seat；21st, fastener；3rd, power
Portion；31st, rotating disk；32nd, loophole；4th, light detection means；41st, light radiating circuit；42nd, light receiver circuit；421st, detect
Portion；422nd, comparing section；5th, counting device；51st, counting circuit；52nd, adjustment portion；6th, on-off circuit；7th, plunger displacement pump.
Specific embodiment
Below in conjunction with the accompanying drawings and embodiment, the utility model is described in detail.
A kind of plunger displacement pump pitchometer, reference picture 1, including supporting table 1, are fixedly connected on the upper surface of supporting table 1
There is the fixed seat 2 for placing column plug pump 7, fastener 21 is threaded with the side of fixed seat 2, fasten in the present embodiment
Part 21 is bolt, can also be screw etc. in other embodiment, after plunger displacement pump 7 is placed in fixed seat 2, the screw rod end of bolt
Plunger displacement pump 7 is mutually butted on through fixed seat 2, because stiction between the two is so as to plunger displacement pump 7 is fixed in fixed seat 2.
Reference picture 1, support 11 is also provided with the side of supporting table 1 vertically, and the upper end on support 11 positioned at fixed seat 2 is provided with
Detector for displacement measuring 12 for measuring plunger displacement, the detector for displacement measuring 12 in the present embodiment is digital, and on being located at
The concrete principle and structure of measuring instrument are prior art, are repeated no more in the present embodiment, the detector for displacement measuring 12 in measurement
Thimble 13 is mutually butted on the top of plunger, and when plunger is moved axially in the pump housing along the pump housing, plunger drives the displacement of thimble 13, enters
And digital measuring apparatus when plunger is moved the size of pitch show on a display screen.
Reference picture 2 and Fig. 3, are located in fixed seat 2 in supporting table 1 and are provided with through hole, are had for band in supporting table 1
The power part 3 of dynamic plunger rotation, power part 3 is motor in the present embodiment, can also be cylinder in other embodiment, and motor turns
Axle through through hole to be mutually butted on plunger, produced static friction between the two, motor is so as to drive plunger rotation.
Reference picture 3, is also fixedly connected with the rotating disk 31 of synchronous axial system on the axle of motor, rotating disk 31 is axially arranged with along it and runs through
Loophole 32, in the present embodiment the quantity of loophole 32 be 10, supporting table 1 be located at the axial direction of rotating disk 31 both sides be provided with light
Whether line detector 4, the light that light detection means 4 send according to itself detects arteries and veins through loophole 32 with output light
Rush signal.
Reference picture 3 and Fig. 5, light detection means 4 include that the light being arranged in supporting table 1 positioned at the side of rotating disk 31 is sent out
Transmit-receive radio road 41 and the light receiver circuit 42 positioned at the opposite side of rotating disk 31, light radiating circuit 41 are used to send IR,
Light receiver circuit 42 is used to receive IR, is connect with light when the loophole 32 on rotating disk 31 goes to light radiating circuit 41
When between receipts circuit 42, the IR that light radiating circuit 41 sends is examined by passing through loophole 32 by light receiver circuit 42
Measure, light receiver circuit 42 detects arteries and veins through the IR for coming according to whether receiving in loophole 32 with output light
Rush signal.
Light receiver circuit 42 includes that light is used to detect light intensity and exports detection signal corresponding with light intensity
Test section 421 and the comparing section 422 with light intensity reference signal, comparing section 422 are electrically connected with to connect with test section 421
Receive detection signal and compare detection signal and pulse signal is detected with output light with the magnitude of voltage size of light intensity reference signal,
The physical circuit of light detection means 4 is connected as：
Light radiating circuit 41 includes LED and resistance R1, and the anode of LED is connected to electricity
Source, is grounded after the negative electrode series resistance R6 of LED；
Test section 421 includes photosensitive triode VT, resistance R3, wherein the colelctor electrode of photosensitive triode VT is connected to power supply,
The emitter stage output detection signal of photosensitive triode VT, the emitter stage of photosensitive triode VT after series resistance R3 while be grounded；
Comparing section 422 is LM339 type comparator circuits, is specifically connected as, including chip U1, resistance R2 and resistance R4,
Its chips U1 is LM339, and the in-phase input end of LM339 is connected to the emitter stage of photosensitive triode VT to receive detection signal,
Be connected to power supply after the inverting input series resistance R2 of LM339, and the inverting input of LM339 series resistance R4 is followed by simultaneously
Ground, the output end output light detection pulse signal of LM339.
Reference picture 4, light detection means 4 are electrically connected with counting device 5 and on-off circuit 6 successively.
Reference picture 5 and Fig. 6, counting device 5 is electrically connected with light detection means 4 to be believed with receiving light detection pulse
Number, counting device 5 detects pulse signal count and is overflowed with output control signal according to whether counting in response to light,
Counting device 5 has a maximum for counting, so-called counting overflow refer to counting exceeded maximum, counting device 5 according to whether
Count and overflow two kinds of control signals of varying level of output.
Counting device 5 includes counting circuit 51 and the adjustment portion 52 being electrically connected with counting circuit 51, counting circuit 51
It is electrically connected with light detection means 4 to receive light detection pulse signal, coincidence circuit 51 detects arteries and veins in response to light
Signal is rushed to be counted and whether is overflowed with output control signal according to counting, adjustment portion 52 is based on setting counting circuit 51
Several maximums, the physical circuit of counting device 5 is connected as：
Counting circuit 51 is 74LS290 type counter circuits, and it includes chip IC 1 and door and single-pole double-throw switch (SPDT) SB,
Wherein chip IC 1 is 74LS29, and the CP0 pins of 74LS290 chips are connected to the output end of LM339 to receive light detection pulse
Signal, while the CP1 pins of 74LS290 chips are connected to the Q0 pins of its own, ROB, S9A, S9B pipe of 74LS290 chips
Pin is grounded, the Q0 ends and Q3 ends of 74LS290 chips be connected to simultaneously with door, be connected to single-pole double throw with the output end of door and open
Close a switching point of SB, while the Q1 ends of 74LS290 chips are connected to another switching point of single-pole double-throw switch (SPDT), with door and
Switch SB constitutes adjustment portion 52, and when single-pole double-throw switch (SPDT) with door with being connected, now 74LS290 is decimal system connection, is counted most
Big value is 9, and when single-pole double-throw switch (SPDT) is directly connected with the Q1 ends of 74LS290,74LS290 is quinary connection, single-pole double throw
The ROA of the fixing end output control signal 74LS290 chips of switch is connected to switch SB and is resetted with receiving control signal.
Reference picture 6 and Fig. 7, counting device 5 are electrically connected with on-off circuit 6, and on-off circuit 6 is logical in response to control signal
Break and by the break-make of itself with the start and stop of controlled motor, the physical circuit of on-off circuit 6 is connected as：
Triode VT1, resistance R7, resistance R8, relay KM1 including NPN type and it is controlled by the normally opened of relay KM1
Formula switchs KM1-1, and the base stage of wherein triode VT1 is connected to the Q ends of 74LS74 to receive control signal, the base of triode VT1
Power supply is connected to after pole series resistance R7, is grounded after the emitter stage SRE KM1 of triode VT1, switch one end of KM1-1
Power supply is connected to after series resistance R8, is grounded after switching the other end series electric motor M of KM1-1.
The operation principle and the course of work of the present embodiment：
When the pitch of plunger displacement pump 7 is measured, plunger displacement pump 7 is placed in fixed seat 2 first, then tightens bolt, bolt
Screw rod be mutually butted on plunger displacement pump 7 so as to plunger displacement pump 7 is fixed in fixed seat 2, now under the plunger of plunger displacement pump 7 and supporting table 1
The rotating shaft of motor is closely offseted, and motor is rotated such that it is able to drive plunger synchronous axial system, and plunger can edge after rotation in the pump housing
The moving axially upwards the jack-up of thimble 13 of digital displacement measurement instrument 12 of the pump housing, then the measurement column of digital displacement measurement instrument 12
The displacement of plug is shown on a display screen.
When motor drives rotating disk 31 to rotate, the loophole 32 on rotating disk 31 constantly turns with the rotation of rotating disk 31 simultaneously
Dynamic, when loophole 32 is located between light radiating circuit 41 and light receiver circuit 42, test section 421 can receive light
Light and output detection signal corresponding with light intensity that line radiating circuit 41 sends, LM339 compare after receiving detection signal
Compared with detection signal and the size of light intensity reference signal, now sent because test section 421 detects light radiating circuit 41
Light, the voltage of the detection signal that LM339 is received more than light reference signal voltage, the light detection of LM339 outputs
Pulse signal is high level, when loophole 32 is not between light radiating circuit 41 and light receiver circuit 42, test section
421 do not receive the light that light radiating circuit 41 sends, so the voltage swing of detection signal now is less than light intensity
The size of reference signal, the light detection pulse signal of LM339 outputs is low level.
Because loophole 32 has 10 in the present embodiment, motor is rotated one week, and light detection pulse signal changes 10 times,
Plunger rotates a circle in the pump housing simultaneously, and the distance that plunger is moved up is the pitch of plunger, and 74LS290 receives light detection
The step-by-step counting each time of pulse signal once, when 74LS290 takes decade counter connection, when 74LS290 count down to from 0
When 9, number 10 times altogether are now counted and overflowed, and export the control signal of high level, and then triode VT1 conductings make relay KM1
Work, relay KM1 disconnects switch KM1-1, and then motor power-off stops operating, that is, control plunger rotation one week, now position
The reading shown on shift measurement instrument 12 is the pitch that plunger displacement pump 7 rotates one week.
In other embodiments, 74LS290 can also be formed quinary senary etc., loophole 32 can also be changed
The number number of turns different to realize control plunger rotation.
The above is only preferred embodiment of the present utility model, and protection domain of the present utility model is not limited merely to
Above-described embodiment, all technical schemes belonged under the utility model thinking belong to protection domain of the present utility model.Should refer to
Go out, for those skilled in the art, some improvement under the premise of the utility model principle is not departed from and
Retouching, these improvements and modifications also should be regarded as protection domain of the present utility model.
Claims (8)
1. a kind of plunger displacement pump pitchometer, it is characterized in that：Including the supporting table (1) for non-movable piston pump (7), the support
Platform (1) is provided with the power part (3) of driving plunger rotation and is mutually butted on plunger to measure plunger along pump housing axial displacement
Detector for displacement measuring (12), the power part (3) is provided with the rotating disk (31) with power part (3) synchronous axial system, the rotating disk (31)
The loophole (32) for running through is provided with vertically, and the supporting table (1) is provided with light detection means positioned at rotating disk (31) axial direction both sides
(4) whether the light that, the light detection means (4) send according to itself detects arteries and veins through loophole (32) with output light
Signal is rushed, the light detection means (4) are electrically connected with and are counted and according to counting in response to light detection pulse signal
Whether overflow with the counting device of output control signal (5), the counting device (5) is electrically connected with logical in response to control signal
On-off circuit (6) disconnected and that power part (3) start and stop are controlled by break-make；
When counting device (5) is counted to be overflowed, the on-off circuit (6) disconnects controlling power part (3) to stop operating.
2. plunger displacement pump pitchometer according to claim 1, it is characterized in that：The light detection means (4) are including setting
It is placed in the light radiating circuit (41) for sending IR of rotation dish side and is arranged at rotating disk (31) opposite side use
In the light receiver circuit (42) for receiving IR, the light receiver circuit (42) is according to whether receive loophole (32)
It is interior that pulse signal is detected with output light through the IR for coming.
3. plunger displacement pump pitchometer according to claim 2, it is characterized in that：The light receiver circuit (42) is including use
In the test section (421) for detecting light intensity and output detection signal corresponding with light intensity and with light intensity benchmark
The comparing section (422) of signal, the comparing section (422) is electrically connected with test section (421) and to compare detection signal strong with light
Spend the magnitude of voltage size of reference signal and pulse signal is detected with output light.
4. plunger displacement pump pitchometer according to claim 3, it is characterized in that：The comparing section (422) is LM339 types ratio
Compared with device circuit.
5. plunger displacement pump pitchometer according to claim 1, it is characterized in that：The counting device (5) including with light
Counting circuit (51) and the adjustment portion (52) for toggle count maximum that detection means (4) is electrically connected with.
6. plunger displacement pump pitchometer according to claim 5, it is characterized in that：The counting circuit (51) is 74LS290
Type counter circuit.
7. plunger displacement pump pitchometer according to claim 1, it is characterized in that：The on-off circuit (6) is opened for triode
Powered-down road.
8. according to any described plunger displacement pump pitchometer of claim 1 to 7, it is characterized in that：The supporting table (1) is provided with
Fixed seat (2) for placing plunger displacement pump (7), is threaded with the fixed seat (2) and wears base to abut plunger displacement pump (7)
Fastener (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621126051.XU CN206223115U (en) | 2016-10-14 | 2016-10-14 | Plunger displacement pump pitchometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621126051.XU CN206223115U (en) | 2016-10-14 | 2016-10-14 | Plunger displacement pump pitchometer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206223115U true CN206223115U (en) | 2017-06-06 |
Family
ID=58788253
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621126051.XU Expired - Fee Related CN206223115U (en) | 2016-10-14 | 2016-10-14 | Plunger displacement pump pitchometer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206223115U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107192495A (en) * | 2017-07-04 | 2017-09-22 | 江苏大全凯帆电器股份有限公司 | Intelligent screw fastening device |
-
2016
- 2016-10-14 CN CN201621126051.XU patent/CN206223115U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107192495A (en) * | 2017-07-04 | 2017-09-22 | 江苏大全凯帆电器股份有限公司 | Intelligent screw fastening device |
| CN107192495B (en) * | 2017-07-04 | 2023-08-08 | 江苏大全凯帆电器股份有限公司 | Intelligent screw fastening device |
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Granted publication date: 20170606 Termination date: 20211014 |