CN109850233A - A kind of high precision micro propellant filling machine and its application method - Google Patents
A kind of high precision micro propellant filling machine and its application method Download PDFInfo
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- CN109850233A CN109850233A CN201910205296.3A CN201910205296A CN109850233A CN 109850233 A CN109850233 A CN 109850233A CN 201910205296 A CN201910205296 A CN 201910205296A CN 109850233 A CN109850233 A CN 109850233A
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- propellant
- cylinder
- spray head
- valve
- piston
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- 239000003380 propellant Substances 0.000 title claims abstract description 151
- 238000000034 method Methods 0.000 title claims abstract description 11
- 239000007921 spray Substances 0.000 claims abstract description 106
- 239000003795 chemical substances by application Substances 0.000 claims description 9
- 238000007789 sealing Methods 0.000 claims description 9
- 230000033228 biological regulation Effects 0.000 claims description 7
- 230000007423 decrease Effects 0.000 claims description 6
- 238000010586 diagram Methods 0.000 description 16
- LCGLNKUTAGEVQW-UHFFFAOYSA-N Dimethyl ether Chemical compound COC LCGLNKUTAGEVQW-UHFFFAOYSA-N 0.000 description 4
- 239000000443 aerosol Substances 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 230000003252 repetitive effect Effects 0.000 description 2
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- -1 and from Figure 15 Substances 0.000 description 1
- 239000001273 butane Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 239000006210 lotion Substances 0.000 description 1
- 210000004072 lung Anatomy 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- IJDNQMDRQITEOD-UHFFFAOYSA-N n-butane Chemical compound CCCC IJDNQMDRQITEOD-UHFFFAOYSA-N 0.000 description 1
- OFBQJSOFQDEBGM-UHFFFAOYSA-N n-pentane Natural products CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
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- Vacuum Packaging (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
A kind of high precision micro propellant filling machine and its application method, the present invention relates to a kind of propellant filling machine more particularly to high precision micro propellant filling machine and its uses.It is a kind of compact-sized reasonable to provide, and practical simplicity fills high precision micro propellant filling machine with high accuracy and its use.The gas control shutoff valve, which is detachably fixed, to be connected on the metering device；The micro device for filling is connected to by pipeline with the metering device；The micro device for filling includes spray head cylinder, spray head attachment base, attachment base with holes, spring, spool and inhalator jar pressure ring；The top of the spray head cylinder is equipped with propellant entrance B；The spray head cylinder includes spray head cylinder body, nozzle rod and spray head piston；The spray head piston seal is connected in the spray head cylinder body；The nozzle rod is fixedly connected on the spray head piston, and one end is stretched out from the top of the spray head cylinder body, and the other end is stretched out from the bottom of the spray head cylinder body；The nozzle rod is equipped with the through-hole two being connected to the propellant entrance B；The top of the spray head attachment base is fixedly connected with the sealed bottom of the nozzle rod；The spray head attachment base is equipped with the through-hole three being connected to the through-hole two；The present invention has the features such as compact-sized reasonable, practical simplicity, filling precision is high.
Description
Technical field
The present invention relates to a kind of propellant filling machine more particularly to a kind of high precision micro propellant filling machine and its uses
Method.
Background technique
Aerosol means that drug containing, lotion or suspension (raw material) and suitable propellant are packaged in jointly with special valve
In the pressure vessel of system, content is sprayed in mist dress object by the pressure of propellant when use, for lung's sucking or straight
Connect the preparation for being sprayed onto skin and disinfection space.
The filling sequence of aerosol are as follows:
1) raw material is added into the tank body of opening.
2) cap valve, sealing.
3) propellant with pressure is filled in the tank body of sealing.
The material of propellant is usually dimethyl ether, the third butane, carbon dioxide etc., and filling machine structure is shown in that Figure 13 is (common to throw
Penetrate agent metering cylinder) and Figure 14 (spray head is touched in conventional propellant filling).
Fill step are as follows:
One, propellant is after booster pump boil down to liquid, and from Figure 15, propellant entrance (connects the propellant of liquid with booster pump
Connect) then A1 exports A7(by propellant and connect with spray head into propellant cylinder A6), entered in Figure 17 by pipeline and is cast
Agent entrance B1(is connect with metering cylinder), by hollow piston rod in spray head cylinder B2, into spray head check valve B3.Propellant sealing
Between metering cylinder and spray head.
Two, the tank body of sealing is placed in Figure 18 below inhalator jar pressure ring B4.
Three, gas source signal, spray head cylinder B2 downlink in Figure 17 are connected, inhalator jar pressure ring B4 compresses valve, while inhalator jar
Pressure ring B4 uplink opens spray head check valve B3, and the propellant with pressure enters in inhalator jar.And then, in Figure 15 on metering cylinder
Cylinder A3 connects gas source signal, metering piston bar A4 downlink, and built-in check valve A5 cuts off what increasing pump was supplied from propellant entrance
Propellant, while metering piston bar A4 decline, the propellant indentation sealing that will be sealed between propellant cylinder body and spray head
Tank body in.
Four, metering piston bar A4 decline, after meeting the stroke valve A2 in Figure 15, spray head cylinder B2 and Figure 15 fall into a trap in Figure 17
Measure return hydraulic cylinder.
Five, take out the inhalator jar filled.Conventional propellant filling machine can satisfy the filling requirement of general propellant.
When customer requirement filling propellant be R134a 2.4 times of common dimethyl ether (liquidus density of R134a be), fill
Metering is 4 grams, and precision must be controlled at positive and negative 0.1 gram.For this high-precision, the filling of micro propellant, using common
Filling machine is unable to satisfy requirement at all.The reason is as follows that:
1, inhalator jar is placed under filling spray head by conventional propellant filling machine, and spray head cylinder downlink, inhalator jar pressure ring compresses aerosol
When tank, spray head check valve is turned on, even if metering cylinder non-downlink, propellant enter in inhalator jar, until being full of.Spray head cylinder
Time difference asynchronous with the downlink of dosing cylinder is one of the factor for influencing precision filling.
2, metering cylinder uses built-in check valve, and the diameter of propellant cylinder is big, for the cylinder by diameter 35, the row of metering cylinder
Journey is only 4mm, and the error of metering cylinder stroke influences charging quantity too big.
3, the stroke of metering cylinder controls backhaul by mechanical trip valve, because of the fluctuation of gas source and the degree of flexibility of mechanical valve,
Caused by time error, the product of this error and metering cylinder downstream rate is the error filled.
Summary of the invention
For the present invention in view of the above problems, providing a kind of compact-sized reasonable, practical simplicity, filling is with high accuracy a kind of high
The micro propellant filling machine of precision and its application method.
The technical scheme is that including metering device, gas control shutoff valve and micro device for filling；
The gas control shutoff valve, which is detachably fixed, to be connected on the metering device；The micro device for filling passes through pipeline and institute
State metering device connection；
The micro device for filling includes spray head cylinder, spray head attachment base, attachment base with holes, spring, spool and inhalator jar pressure ring；
The top of the spray head cylinder is equipped with propellant entrance B；
The spray head cylinder includes spray head cylinder body, nozzle rod and spray head piston；
The spray head piston seal is connected in the spray head cylinder body；The nozzle rod is fixedly connected on the spray head piston,
One end is stretched out from the top of the spray head cylinder body, and the other end is stretched out from the bottom of the spray head cylinder body；
The nozzle rod is equipped with the through-hole two being connected to the propellant entrance B；
The top of the spray head attachment base is fixedly connected with the sealed bottom of the nozzle rod；The spray head attachment base be equipped with
The through-hole three that the through-hole two is connected to；
The top of the attachment base with holes is fixedly connected with the sealed bottom of the spray head attachment base；It is set on the attachment base with holes
There is several and through-hole tee joint through-hole four；
The top of the inhalator jar pressure ring is fixedly connected with the sealed bottom of the attachment base with holes；The bottom of the inhalator jar pressure ring
Portion is adapted with inhalator jar；The inhalator jar pressure ring is equipped with the through-hole five being connected to the through-hole four；
The attachment base cavity being adapted to the spool is equipped between the attachment base with holes and inhalator jar pressure ring；
The spool is connected in the attachment base cavity by sealing ring；By the flexible realization of the spring to through-hole five
It turns off or on.
The gas control shutoff valve include stop valve body, shut-off valve regulation handle, cut-off valve piston, shut-off valve piston rod and
End valve sphere；
It is located at bottom position on the stop valve body and is equipped with the propellant entrance A being connected to booster pump；The stop valve body
It is upper that the propellant outlet A being connected to metering device is equipped with close to medium position；
The shut-off valve regulation handle is connected to the top of the stop valve body by thread seal；
The shut-off valve piston seal is connected to the interior intracavitary of the stop valve body；The shut-off valve piston rod is fixedly connected on
The lower section of the cut-off valve piston, is adapted with the cut-off valve sphere；
The inner cavity of the shut-off valve is equipped with the propellant channel being connected to the propellant entrance A, sets on the propellant channel
There is the sphere attachment base being adapted to the cut-off valve sphere.Cut-off valve sphere is movably arranged on sphere attachment base.
The metering device includes locking nut, metering adjustment screw, cylinder block, the cylinder piston body of rod, external stroke
Valve and propellant cylinder body；
The cylinder block is fixedly connected on the top of the propellant cylinder body, and is interconnected；
Vertically communicated propellant storage chamber is equipped in the propellant cylinder body；The propellant storage chamber and the cylinder piston
The body of rod is adapted；The propellant storage chamber, which is equipped with, exports the through-hole one being adapted to the propellant of the gas control shutoff valve；Institute
The bottom for stating propellant storage chamber is equipped with the propellant outlet B connecting with micro device for filling；
One end of the metering adjustment screw is stretched out out of described cylinder block, and the locking nut by being adapted to is fixedly connected on
On the cylinder block；The other end of the metering adjustment screw protrudes into the adjusting cavity of the cylinder block；
The piston portion of the cylinder piston body of rod is arranged in the adjusting cavity, and the bar portion of the cylinder piston body of rod is to the throwing
It penetrates agent storage cavity direction to extend, be adapted with the propellant storage chamber；
The external stroke valve is fixed at the bottom of the cylinder block, and the test side of the external stroke valve is protruded into described
In adjusting cavity.
The gauge diameter of the cylinder piston body of rod is 14mm.
A kind of application method of high precision micro propellant filling machine, comprising:
1) start booster pump, the propellant through booster pump pressurization opens Pneumatic valve cut-off ball, from projectile by propellant entrance A
Agent outlet B enters propellant cylinder body；The cylinder piston body of rod is pressed on metering adjusting screw rod by the propellant into propellant cylinder body
On, the propellant entrance B that B enters filling spray head is exported by propellant, by attachment base with holes, into the bottom of spool；Cause
Spool is acted on by spring, and the pressure of booster pump cannot push spool to move upwards.Sprayed without propellant；
At this point, the reversal valve connecting with spray head cylinder is failure to actuate, gas source enters the cavity of resorption of spray head cylinder, i.e. inhalator jar pressure ring is in
Upper initial point position.
2) inhalator jar is placed on to the underface of inhalator jar pressure ring, starts the descending button of spray head cylinder, commutate valve events,
Spray head cylinder downlink, will compress inhalator jar.The channel of booster pump and propellant cylinder is cut off in gas control shutoff valve movement simultaneously.It is quantitative
Propellant be enclosed between metering cylinder and spray head.
3) after reaching the time that time-delay valve one is set, gas source enters the epicoele of dosing cylinder, since dosing cylinder epicoele is living
The area of plug is much larger than the area of piston rod, and the pressure generated in propellant cylinder body can overcome spring to the pressure of spool；
I.e. while measuring cylinder piston rod decline, spool rises, and propellant enters in inhalator jar.
4) after the piston portion of the cylinder piston body of rod encounters external stroke valve, the cylinder piston body of rod will be continued traveling downwardly；Work as gas
After the bottom of the adjusting cavity of the piston portion and cylinder block of the cylinder piston body of rod comes into full contact with；Reversal valve resets.The spray of spray head cylinder
The cylinder piston body of rod of head piston and dosing cylinder backs on top position respectively, and gas control shutoff valve resets, and propellant is again introduced into
Metering device waits next circulation.
It include metering device, gas control shutoff valve and micro device for filling in the present invention；Gas control shutoff valve is detachably fixed company
It connects on metering device；Micro device for filling is connected to by pipeline with the metering device；Micro device for filling includes spray head gas
Cylinder, spray head attachment base, attachment base with holes, spring, spool and inhalator jar pressure ring；Attachment base with holes is that propellant enters spool bottom
Channel, spring pushes down spool.Spool, which is opened, needs biggish pressure；When metering device generates larger pressure, it is located at spool
The propellant of lower section opens spool, enters in inhalator jar pressure ring.It is compact-sized reasonable that the present invention has, and practical simplicity fills
The features such as replenishing essence degree is high.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of metering device of the present invention,
Fig. 2 be in Fig. 1 A to structural schematic diagram,
Fig. 3 is the structural schematic diagram of micro device for filling,
Fig. 4 be in Fig. 3 B to structural schematic diagram,
Fig. 5 is the enlarged structure schematic diagram in the region C in Fig. 4,
Fig. 6 is the structural schematic diagram of spray head attachment base；
Fig. 7 is the schematic view of the front view of attachment base with holes,
Fig. 8 is the overlooking structure diagram of Fig. 7,
Fig. 9 is the present invention looks up structural representation of Fig. 7,
Figure 10 be in Fig. 7 D to structural schematic diagram,
Figure 11 is the structural schematic diagram of spool,
Figure 12 be in Figure 11 E to structural schematic diagram,
Figure 13 is pneumatic schematic diagram of the present invention,
Figure 14 is the structural schematic diagram of conventional propellant metering cylinder in background technique,
Figure 15 be in Figure 14 I to structural schematic diagram,
Figure 16 is the structural schematic diagram of conventional propellant filling spray head in background technique,
Figure 17 be in Figure 16 II to structural schematic diagram,
Figure 18 is the enlarged structure schematic diagram of IV in Figure 17；
1 is metering device in figure, and 11 be locking nut, and 12 be metering adjustment screw, and 13 be cylinder block, and 14 be cylinder piston rod
Body, 15 be external stroke valve, and 16 be propellant cylinder body, and 17 be propellant outlet B,
2 be gas control shutoff valve, and 21 are off valve body, and 22 are off valve regulation handle, and 23 are off valve piston, and 24 are off valve
Piston rod, 25 are off valve sphere, and 26 be propellant entrance A,
3 be micro device for filling, and 31 be spray head cylinder, and 32 be spray head attachment base, and 33 be attachment base with holes, and 34 be spring, and 35 are
Spool, 36 be inhalator jar pressure ring, and 37 be propellant entrance B.
Specific embodiment
The present invention as shown in figures 1-13, including metering device 1, gas control shutoff valve 2 and micro device for filling 3；
The gas control shutoff valve 2, which is detachably fixed, to be connected on the metering device 1；The micro device for filling 3 passes through Teflon
Imperial R115-5 hoseline is connected to the metering device 1；
The micro device for filling 3 includes spray head cylinder 31, spray head attachment base 32, attachment base with holes 33, spring 34,35 and of spool
Inhalator jar pressure ring 36；
The top of the spray head cylinder 31 is equipped with propellant entrance B37；
The spray head cylinder 31 includes spray head cylinder body, nozzle rod and spray head piston；As shown in figure 3, being provided on spray head cylinder 31
Stroke valve, effect is to press inflation button if not having jar below air charging system, and air charging system downlink is encountered
The trip valve, air charging system reset, dosing cylinder not downlink.Maloperation is prevented, loss is reduced.
The spray head piston seal is connected in the spray head cylinder body；The nozzle rod is fixedly connected on the spray head piston
On, one end is stretched out from the top of the spray head cylinder body, and the other end is stretched out from the bottom of the spray head cylinder body；
The nozzle rod is equipped with the through-hole two being connected to the propellant entrance B37；
The top of the spray head attachment base 32 is fixedly connected with the sealed bottom of the nozzle rod；It is set on the spray head attachment base 32
There is the through-hole three being connected to the through-hole two；
The top of the attachment base with holes 33 is fixedly connected with the sealed bottom of the spray head attachment base 32；The attachment base with holes
33 are equipped with several through-holes four with the through-hole tee joint；As shown in fig. 6, the bottom of spray head attachment base 32 is equipped with internal screw thread
Slot；As shown in fig. 7, the top of attachment base 33 with holes is equipped with the external screw thread connector being adapted to internal thread groove；As shown in Figure 10, outside
Threaded connector is equipped with several four A of through-hole uniformly arranged, and the lower part of attachment base 33 with holes, which is arranged with, several uniformly to be arranged
Four B of through-hole；Slot in Figure 10 on the outside of four B of through-hole realizes attachment base 33 with holes and spray head attachment base 32 for placing sealing ring
It is tightly connected；Propellant flows into four B of through-hole from four A of through-hole, finally flows into the channel of 35 bottom of spool；
The top of the inhalator jar pressure ring 36 is fixedly connected with the sealed bottom of the attachment base 33 with holes；The inhalator jar pressure ring
36 bottom is adapted with inhalator jar；The inhalator jar pressure ring 36 is equipped with the through-hole five being connected to the through-hole four；
The attachment base cavity being adapted to the spool 35 is equipped between the attachment base with holes 33 and inhalator jar pressure ring 36；Company with holes
Joint chair 33 is the channel that propellant enters 35 bottom of spool, and spring 34 pushes down spool 35.Spool 35, which is opened, needs biggish pressure
Power；
The spool 35 is connected in the attachment base cavity by sealing ring；By the flexible realization of the spring 34 to through-hole
Five turn off or on.The top of spool 35 is located at medium position and is equipped with the spring groove being adapted to spring 34, and spring 34 is located at band
Between hole attachment base 33 and spool 35.When normal condition, propellant enters the lower passage of spool 35, spool 35 from through-hole four
Bottom and inhalator jar pressure ring 36 be tightly connected, blocked through-hole five；When metering device 1 pressurizes to micro device for filling 3
When, spool 35 overcomes the elastic force of spring 34, moves upwards, and through-hole five is opened, and realizes the filling of inhalator jar.
The gas control shutoff valve 2 includes stop valve body 21, shut-off valve regulation handle 22, cut-off valve piston 23, shut-off valve
Piston rod 24 and cut-off valve sphere 25；
It is located at bottom position on the stop valve body 21 and is equipped with the propellant entrance A26 being connected to booster pump；The shut-off valve
The propellant outlet A being connected to metering device 1 is equipped on valve body 21 close to medium position；
The shut-off valve regulation handle 22 is connected to the top of the stop valve body 21 by thread seal；
The cut-off valve piston 23 is sealedly connected on the interior intracavitary of the stop valve body 21；The shut-off valve piston rod 24 is fixed
It is connected to the lower section of the cut-off valve piston 23, is adapted with the cut-off valve sphere 25；
The inner cavity of the shut-off valve is equipped with the propellant channel that is connected to the propellant entrance A26, on the propellant channel
Equipped with the sphere attachment base being adapted to the cut-off valve sphere 25.Cut-off valve sphere 25 is movably arranged on sphere attachment base.
Gas source is entered by the air inlet on 2 valve body of gas control shutoff valve, generates pressure, gas by 2 piston of gas control shutoff valve
It controls 2 piston rod of shut-off valve and compresses gas control valve sphere, i.e., cut-off propellant enters the access of propellant metering cylinder cylinder.
The metering device 1 include locking nut 11, metering adjustment screw 12, cylinder block 13, the cylinder piston body of rod 14,
External stroke valve 15 and propellant cylinder body 16；
The cylinder block 13 is fixedly connected on the top of the propellant cylinder body 16, and is interconnected；
Vertically communicated propellant storage chamber is equipped in the propellant cylinder body 16；The propellant storage chamber and the cylinder are living
Stopper rod body 14 is adapted；The propellant storage chamber, which is equipped with, exports the through-hole being adapted to the propellant of the gas control shutoff valve 2
One；The bottom of the propellant storage chamber is equipped with the propellant outlet B17 connecting with micro device for filling 3；
One end of the metering adjustment screw 12 is stretched out out of described cylinder block 13, and fixed by the locking nut 11 of adaptation
It is connected on the cylinder block 13；The other end of the metering adjustment screw 12 protrudes into the adjusting cavity of the cylinder block 13
It is interior；
The piston portion of the cylinder piston body of rod 14 is arranged in the adjusting cavity, is moved up and down in adjusting cavity by gas source,
The bar portion of the cylinder piston body of rod 14 extends to propellant storage cavity direction, mutually fits with the propellant storage chamber
Match；
The external stroke valve 15 is fixed at the bottom of the cylinder block 13, and the test side of the external stroke valve 15 is stretched
Enter in the adjusting cavity.
Propellant metering cylinder uses plunger cylinder structure, extrude propellant number propellant goed deep by the cylinder piston body of rod 14
The diameter of cylinder determines that can be made is very thin, greatly reduces influence of the journey error to filling error.The cylinder piston body of rod 14
It is manufactured using overall structure, the piston portion of each cylinder piston body of rod 14 must be contacted with cylinder bottom could backhaul.Machinery is fixed
Position, repetitive positioning accuracy are high.Metering adjusting screw rod is threadedly attached on propellant metering cylinder, can be carried out in cylinder block 13
Up and down adjustment realizes that the position of 14 upper limit of the cylinder piston body of rod is adjusted, and metering adjustment screw 12 passes through top after the completion of adjusting
Locking nut 11 fasten, can eliminate gap to filling precision influence.
The gauge diameter of the cylinder piston body of rod 14 is 14mm.
A kind of application method of high precision micro propellant filling machine, comprising:
1) start booster pump, the propellant through booster pump pressurization opens Pneumatic valve cut-off ball, from throwing by propellant entrance A26
It penetrates agent outlet B17 and enters propellant cylinder body 16；The cylinder piston body of rod 14 is pressed on meter by the propellant into propellant cylinder body 16
It measures on adjusting screw rod, the propellant entrance B37 that B17 enters filling spray head is exported by propellant, by attachment base 33 with holes, into
Enter the bottom of spool 35；Because spool 35 is acted on by spring 34, the pressure of booster pump cannot push spool 35 to move upwards.I.e. without throwing
Penetrate agent ejection；
At this point, the reversal valve connecting with spray head cylinder 31 is failure to actuate, gas source enters the cavity of resorption of spray head cylinder 31, i.e. inhalator jar pressure ring
36 are in upper initial point position.
2) inhalator jar is placed on to the underface of inhalator jar pressure ring 36, starts the descending button of spray head cylinder 31, reversal valve
Movement, 31 downlink of spray head cylinder will compress inhalator jar.The movement of gas control shutoff valve 2 simultaneously, cutting booster pump and propellant cylinder lead to
Road.Quantitative propellant is enclosed between metering cylinder and spray head.
3) after reaching the time that time-delay valve one is set, gas source enters the epicoele of dosing cylinder, since dosing cylinder epicoele is living
The area of plug is much larger than the area of piston rod, and the pressure generated in propellant cylinder body 16 can overcome spring 34 to spool 35
Pressure；I.e. while measuring cylinder piston rod decline, spool 35 rises, and propellant enters in inhalator jar.
4) after the piston portion of the cylinder piston body of rod 14 encounters external stroke valve 15, under the cylinder piston body of rod 14 will continue
Row；After the bottom of the adjusting cavity of the piston portion and cylinder block 13 of the cylinder piston body of rod 14 comes into full contact with；Piston portion is from touching
The time of bottom of the external stroke valve 15 to adjusting cavity presets control by time-delay valve two and changes after the time for reaching setting
It is resetted to valve.The spray head piston of spray head cylinder 31 and the cylinder piston body of rod 14 of dosing cylinder back on top position respectively, gas control
Single shut-off valve resets, and propellant is again introduced into metering device 1, waits next circulation.
The work of time-delay valve two is after encountering external stroke valve 15, and the piston in dosing cylinder continues traveling downwardly, and piston and bottom are filled
After touch, piston returns tap；Have the characteristics that repetitive positioning accuracy is high.
As shown in figure 13, A is time-delay valve one in figure, and B is gas control shutoff valve (namely figure label be 2 component), and C is
Metering cylinder, D be external stroke valve (namely figure label be 15 component), E is time-delay valve two, and F is stroke valve, and G is spray head
Cylinder (namely figure label be 31 component), H is pressure reducing valve one, and I is descending button, and J is reversal valve, and K is reset button
(effect of reset button is, if reversal valve stops at half-way, that is, air charging system cylinder.The button is pressed, is commutated
Valve returns to original state), L is pressure reducing valve two.
From high-precision, the sequence of movement and structure of micro propellant filling machine can be seen that the machine has the advantage that
1, when spray head cylinder 31 is begun to decline, no propellant enters inhalator jar；In propellant cylinder body 16 and spray head cylinder 31, with
And the amount of the propellant in pipeline is greater than and needs charging quantity, does not influence on filling precision, it is ensured that the precision of micro filling
It realizes.
2, spray head cylinder 31 and metering cylinder movement having time control respectively, provide guarantee for successively movement.Metering cylinder is equipped with
Delay will not equally impact filling precision if the movement of spray head cylinder 31 is grown again.
3, metering cylinder backhaul to top and goes downwards to bottom by mechanical position limitation, and resetting is high.To be filling precision
Provide guarantee.
For this case disclosure of that, need to illustrate there are also the following:
(1), this case the disclosed embodiments attached drawing relates only to and structure involved by this case disclosed embodiment, other knots
Structure, which can refer to, to be commonly designed；
(2), in the absence of conflict, the feature in this case the disclosed embodiments and embodiment can be combined with each other to obtain
New embodiment；
More than, only specific embodiment disclosed in this case, but the protection scope of the disclosure is not limited thereto, and this case institute is public
The protection scope opened should be subject to the protection scope in claims.
Claims (5)
1. a kind of high precision micro propellant filling machine, which is characterized in that including metering device, gas control shutoff valve and micro filling
Device；
The gas control shutoff valve, which is detachably fixed, to be connected on the metering device；The micro device for filling passes through pipeline and institute
State metering device connection；
The micro device for filling includes spray head cylinder, spray head attachment base, attachment base with holes, spring, spool and inhalator jar pressure ring；
The top of the spray head cylinder is equipped with propellant entrance B；
The spray head cylinder includes spray head cylinder body, nozzle rod and spray head piston；
The spray head piston seal is connected in the spray head cylinder body；The nozzle rod is fixedly connected on the spray head piston,
One end is stretched out from the top of the spray head cylinder body, and the other end is stretched out from the bottom of the spray head cylinder body；
The nozzle rod is equipped with the through-hole two being connected to the propellant entrance B；
The top of the spray head attachment base is fixedly connected with the sealed bottom of the nozzle rod；The spray head attachment base be equipped with
The through-hole three that the through-hole two is connected to；
The top of the attachment base with holes is fixedly connected with the sealed bottom of the spray head attachment base；It is set on the attachment base with holes
There is several and through-hole tee joint through-hole four；
The top of the inhalator jar pressure ring is fixedly connected with the sealed bottom of the attachment base with holes；The bottom of the inhalator jar pressure ring
Portion is adapted with inhalator jar；The inhalator jar pressure ring is equipped with the through-hole five being connected to the through-hole four；
The attachment base cavity being adapted to the spool is equipped between the attachment base with holes and inhalator jar pressure ring；
The spool is connected in the attachment base cavity by sealing ring；By the flexible realization of the spring to through-hole five
It turns off or on.
2. a kind of high precision micro propellant filling machine according to claim 1, which is characterized in that the gas control shutoff valve
Including stop valve body, shut-off valve regulation handle, cut-off valve piston, shut-off valve piston rod and cut-off valve sphere；
It is located at bottom position on the stop valve body and is equipped with the propellant entrance A being connected to booster pump；The stop valve body
It is upper that the propellant outlet A being connected to metering device is equipped with close to medium position；
The shut-off valve regulation handle is connected to the top of the stop valve body by thread seal；
The shut-off valve piston seal is connected to the interior intracavitary of the stop valve body；The shut-off valve piston rod is fixedly connected on
The lower section of the cut-off valve piston, is adapted with the cut-off valve sphere；
The inner cavity of the shut-off valve is equipped with the propellant channel being connected to the propellant entrance A, sets on the propellant channel
There is the sphere attachment base being adapted to the cut-off valve sphere；Cut-off valve sphere is movably arranged on sphere attachment base.
3. a kind of high precision micro propellant filling machine according to claim 1, which is characterized in that the metering device packet
Include locking nut, metering adjustment screw, cylinder block, the cylinder piston body of rod, external stroke valve and propellant cylinder body；
The cylinder block is fixedly connected on the top of the propellant cylinder body, and is interconnected；
Vertically communicated propellant storage chamber is equipped in the propellant cylinder body；The propellant storage chamber and the cylinder piston
The body of rod is adapted；The propellant storage chamber, which is equipped with, exports the through-hole one being adapted to the propellant of the gas control shutoff valve；Institute
The bottom for stating propellant storage chamber is equipped with the propellant outlet B connecting with micro device for filling；
One end of the metering adjustment screw is stretched out out of described cylinder block, and the locking nut by being adapted to is fixedly connected on
On the cylinder block；The other end of the metering adjustment screw protrudes into the adjusting cavity of the cylinder block；
The piston portion of the cylinder piston body of rod is arranged in the adjusting cavity, and the bar portion of the cylinder piston body of rod is to the throwing
It penetrates agent storage cavity direction to extend, be adapted with the propellant storage chamber；
The external stroke valve is fixed at the bottom of the cylinder block, and the test side of the external stroke valve is protruded into described
In adjusting cavity.
4. a kind of high precision micro propellant filling machine according to claim 3, which is characterized in that the cylinder piston rod
The gauge diameter of body is 14mm.
5. a kind of application method of high precision micro propellant filling machine described in claim 1 characterized by comprising
1) start booster pump, the propellant through booster pump pressurization opens Pneumatic valve cut-off ball, from projectile by propellant entrance A
Agent outlet B enters propellant cylinder body；The cylinder piston body of rod is pressed on metering adjusting screw rod by the propellant into propellant cylinder body
On, the propellant entrance B that B enters filling spray head is exported by propellant, by attachment base with holes, into the bottom of spool；Cause
Spool is acted on by spring, and the pressure of booster pump cannot push spool to move upwards；Sprayed without propellant；
At this point, the reversal valve connecting with spray head cylinder is failure to actuate, gas source enters the cavity of resorption of spray head cylinder, i.e. inhalator jar pressure ring is in
Upper initial point position；
2) inhalator jar is placed on to the underface of inhalator jar pressure ring, starts the descending button of spray head cylinder, commutate valve events, spray head
Cylinder downlink will compress inhalator jar；The channel of booster pump and propellant cylinder is cut off in gas control shutoff valve movement simultaneously；Quantitative throwing
Agent is penetrated to be enclosed between metering cylinder and spray head；
3) after reaching the time that time-delay valve one is set, gas source enters the epicoele of dosing cylinder, due to dosing cylinder epicoele piston
Area is much larger than the area of piston rod, and the pressure generated in propellant cylinder body can overcome spring to the pressure of spool；Exist
While measuring cylinder piston rod decline, spool rises, and propellant enters in inhalator jar；
4) after the piston portion of the cylinder piston body of rod encounters external stroke valve, the cylinder piston body of rod will be continued traveling downwardly；When cylinder is living
After the bottom of the adjusting cavity of the piston portion and cylinder block of stopper rod body comes into full contact with；Reversal valve resets；The spray head of spray head cylinder is living
The cylinder piston body of rod of plug and dosing cylinder backs on top position respectively, and gas control shutoff valve resets, and propellant is again introduced into metering
Device waits next circulation.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910205296.3A CN109850233B (en) | 2019-03-18 | 2019-03-18 | High-precision trace propellant filling machine and use method thereof |
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| CN201910205296.3A CN109850233B (en) | 2019-03-18 | 2019-03-18 | High-precision trace propellant filling machine and use method thereof |
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| CN109850233B CN109850233B (en) | 2024-03-08 |
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|---|---|
| CN109850233B (en) | 2024-03-08 |
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