CN110397566A - A kind of liquid material output method using metering pump - Google Patents
A kind of liquid material output method using metering pump Download PDFInfo
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- CN110397566A CN110397566A CN201910606279.0A CN201910606279A CN110397566A CN 110397566 A CN110397566 A CN 110397566A CN 201910606279 A CN201910606279 A CN 201910606279A CN 110397566 A CN110397566 A CN 110397566A
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- 239000011344 liquid material Substances 0.000 title claims abstract description 66
- 238000000034 method Methods 0.000 title claims abstract description 24
- 239000007788 liquid Substances 0.000 claims description 26
- 238000010008 shearing Methods 0.000 claims description 26
- 238000009434 installation Methods 0.000 claims description 12
- 230000000694 effects Effects 0.000 claims description 4
- 238000005259 measurement Methods 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims description 2
- 238000007789 sealing Methods 0.000 description 10
- 238000010586 diagram Methods 0.000 description 5
- 208000005189 Embolism Diseases 0.000 description 4
- 238000005187 foaming Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000004814 polyurethane Substances 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000009191 jumping Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000011295 pitch Substances 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B13/00—Pumps specially modified to deliver fixed or variable measured quantities
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B23/00—Pumping installations or systems
- F04B23/04—Combinations of two or more pumps
- F04B23/06—Combinations of two or more pumps the pumps being all of reciprocating positive-displacement type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/18—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by changing the effective cross-section of the working surface of the piston
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/14—Pistons, piston-rods or piston-rod connections
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/16—Casings; Cylinders; Cylinder liners or heads; Fluid connections
- F04B53/162—Adaptations of cylinders
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
Abstract
The present invention provides a kind of liquid material output method using metering pump, the following steps are included: providing N number of metering pump for being respectively used to conveying N kind liquid material, metering pump includes cylinder body and piston component, and cylinder body includes stationary cylinder and cylinder body movable plate, and cylinder body opening is formed on stationary cylinder；Cylinder body movable plate is slideably positioned in cylinder body opening, and surrounds a cylinder space jointly with stationary cylinder；Piston component include make movable plate and piston extensible member, make movable plate and be slidably installed on stationary cylinder, piston extensible member connect with as movable plate and with stationary cylinder and cylinder body movable plate sliding contact, to form the confined space for accommodating liquid material in cylinder space；Pass through the movement of cylinder body movable plate and the flexible cross-sectional area to adjust corresponding confined space of piston extensible member；Moving synchronously as movable plate for N number of metering pump is driven, the liquor charging amount of every kind of liquid material is the cross-sectional area of corresponding confined space and the product for making movable plate move distance.The liquid material output method can ensure that the mixed proportion of a variety of liquid materials is stablized.
Description
Technical field
The present invention relates to liquid material export technique field more particularly to a kind of liquid material output methods using metering pump.
Background technique
In existing PU (polyurethanes) foaming part manufacturing equipment, metering pump is crucial portion in the system of use
Part, the mixed ratio of two kinds of material are controlled by the metering pump of respective system.Metering pump in the prior art is usually to pass through change
The stroke of embolism adjusts liquor charging amount.Since system pressure is unstable, and respectively control system will allow two meters to two metering pumps
Amount pump embolism movement velocity is inconsistent, and in use, the stroke of embolism will receive outlet pressure reaction and mechanical mechanism
The influence of backhaul difference and cause embolism movement there is jumping phenomena, be exactly sometimes fast and sometimes slow, so that liquid output is unstable, to lead
Cause the mixed proportion of two kinds of materials unstable, or discharging it is asynchronous cause to be layered, cause production foaming part it is unqualified.
Summary of the invention
The present invention is intended to provide a kind of liquid material output method using metering pump, liquor charging amount can be adjusted and can be more
Ensure that the mixed proportion of a variety of liquid materials is stablized when kind liquid material mixing.
In order to achieve the above objectives, the technical scheme adopted by the invention is that:
A kind of liquid material output method using metering pump, for N kind liquid material to be exported according to preset mixed proportion, wherein
N is natural number not less than 2, the liquid material output method the following steps are included:
N number of metering pump is provided, N number of metering pump is respectively used to conveying N kind liquid material, and each metering pump includes cylinder body and work
Plug assembly, the cylinder body include stationary cylinder and cylinder body movable plate, and the side of the stationary cylinder forms cylinder body opening, the stationary cylinder
Upper also compartment of terrain offers inlet and liquid outlet；The cylinder body movable plate is slidably installed in the cylinder body opening, and with
The stationary cylinder surrounds a cylinder space jointly；The piston component includes making movable plate and piston extensible member, and the movable plate of making is slided
Be installed on the stationary cylinder dynamicly, the piston extensible member and it is described make movable plate connection, and with the inner wall of the stationary cylinder and
The inner wall sliding contact of the cylinder body movable plate, to form the confined space for accommodating liquid material, institute in the cylinder space
Confined space is stated to be connected to the inlet and the liquid outlet；Under the effect of external force, described to be able to drive institute as movable plate
It states piston extensible member to move back and forth along a first direction, the cylinder body movable plate can be along vertical with the first direction second
Direction is moved back and forth to adjust the cross-sectional area of the confined space, the piston extensible member can stress along the second direction
It is corresponding flexible, so that the piston extensible member can be kept in contact with the cylinder body movable plate；
According to the liquor charging amount of every kind of liquid material, pass through the movement of cylinder body movable plate and stretching to adjust respectively for piston extensible member
The cross-sectional area of N number of metering pump confined space；
The actuation strip piston extensible member of N number of metering pump is driven to move synchronously: when piston extensible member moves so that closed
When space becomes larger, liquid material enters via corresponding inlet in the confined space of corresponding measurement pump, when piston extensible member is transported
When moving so that confined space becomes smaller, liquid material is discharged outside the confined space via corresponding liquid outlet；The liquor charging amount of every kind of liquid material
The cross-sectional area of confined space is pumped for corresponding measurement and makees the product of movable plate move distance.
Further, the piston extensible member includes ejector plate, expansion plate and ejection actuator, the ejector plate with it is described
It is oppositely arranged as movable plate, the inside sliding contact of the ejector plate and the cylinder body movable plate is described to make movable plate and the fixation
The side sliding contact of the relatively described cylinder body movable plate of cylinder, the expansion plate are located in the cylinder space, the expansion plate
Opposite sides makees movable plate and ejector plate is connect with described respectively, and the free side of the expansion plate and the inner wall of the stationary cylinder are sliding
Dynamic contact；The ejection actuator is located at the expansion plate backwards to the side of the confined space, and connect the ejector plate with
It is described to make movable plate, to drive the ejector plate to move along the second direction, and drive the expansion plate along the second direction
Carry out stretching motion.
Further, the ejection actuator includes scissors mechanism and driver, the opposite end point of the scissors mechanism
Movable plate is not made and the ejector plate is connect with described, the driver, which is installed in, described to be made to connect on movable plate and with the scissors mechanism
It connects, to drive the scissors mechanism to drive the expansion plate and ejector plate movement.
Further, the scissors mechanism includes two shearing fork telescopic parts and a connecting shaft, and two shearing fork telescopic parts are parallel
Be oppositely arranged, each shearing fork telescopic part include two mounting plates and a fork-shearing frame, two mounting plates respectively with it is described make movable plate and
The ejector plate is fixedly connected, and each mounting plate is equipped with the dovetail groove extended along the first direction；The phase of the fork-shearing frame
One fixed rod end is all had to both ends and a mobile rod end, two fixed rod ends are rotatablely connected with two mounting plates respectively, two
Mobile rod end passes through a dovetail slide block respectively and is slidably connected with the dovetail groove on two mounting plates；The hinged pivot pin of the fork-shearing frame
Also it is connect by connecting rod with the expansion plate；The connecting shaft is located at one end of the fork-shearing frame, and be located at the scissor
The mobile rod end connection of two of frame the same end；The driver and the connection axis connection.
Further, the expansion plate includes along the second direction successively hinged muti-piece piston plate, the connecting rod
It is connected to the hinged place of adjacent two pieces of piston plates.
Further, one end sliding for making movable plate is pierced by the stationary cylinder and is located at outside the cylinder space, described
Ejector plate is located in the cylinder space.
Further, the cylinder space is in cubic.
Further, the quantity of the piston component is two, and two piston components are opposite along the first direction
Setting, two piston components link together as movable plate, and the piston extensible members of two piston components is by the cylinder space point
It is divided into installation space and two confined spaces positioned at the installation space opposite end；The inlet and the liquid out
Mouthful quantity be two, two inlets are connected to two confined spaces respectively, two liquid outlets respectively with two institutes
State confined space connection.
Further, the stationary cylinder of N number of metering pump is fixed together.
Due to the adoption of the above technical scheme, the invention has the following advantages:
1, above-mentioned liquid material output method, metering pump adjust the cross section of confined space by the movement of cylinder body movable plate
Product, and then realize the adjusting to liquor charging amount.Since the metering pump adjusts liquor charging amount by the movement of cylinder body movable plate, thus permit
Many a metering pumps are moved synchronously as movable plate, therefore, as long as it regulates each metering pump according to the liquor charging amount of every kind of liquid material
Cross section, that is, can ensure that the mixed proportion of a variety of liquid materials when mixing is stablized, do not influenced by system pressure is unstable, improved
The qualification rate of product.Due to being moved synchronously as movable plate for multiple metering pumps, it can be ensured that a variety of liquid materials discharge simultaneously, avoid
Discharge the asynchronous generation for leading to mixing layered phenomenon.
2, above-mentioned liquid material output method, the expansion plate of the metering pump used is controlled by scissors mechanism to be stretched, and can be made
The movement for obtaining expansion plate is more stable；Scissors mechanism can give ejector plate and make movable plate by the control movement of ejection actuator
One thrust makees movable plate and stationary cylinder keeps being in close contact so that ejector plate and cylinder body movable plate keep being in close contact, thus
Guarantee the leakproofness that there is piston component enough pressure to guarantee confined space, avoids liquid material from polluting scissors mechanism, further mention
The high precision and service life of metering pump.
3, above-mentioned liquid material output method, metering pump are in cubic, convenient for calculating the output quantity of liquid.
Detailed description of the invention
Fig. 1 is the perspective view of metering pump in first embodiment of the invention.
Fig. 2 is the perspective view of metering pump shown in Fig. 1.
Fig. 3 is the exploded view of metering pump shown in Fig. 1.
Fig. 4 is structure chart of the metering pump shown in Fig. 3 at another visual angle.
Fig. 5 is the perspective view of ejection actuator in metering pump shown in Fig. 4.
Fig. 6 is the optical cable of ejection actuator shown in Fig. 5.
Fig. 7 is the perspective view of metering pump expansion plate in first embodiment of the invention.
Fig. 8 is perspective view of the expansion plate shown in Fig. 7 at another visual angle.
Fig. 9 is the exploded view of piston plate in expansion plate shown in Fig. 7.
Figure 10 is perspective diagram of the metering pump under main view view shown in Fig. 1.
Figure 11 is the perspective view of metering pump in second embodiment of the invention.
Figure 12 is the perspective view of metering pump shown in Figure 11.
Figure 13 is the exploded view of metering pump shown in Figure 11.
Figure 14 is the usage state diagram of metering pump shown in Fig. 1.
Figure 15 is structural schematic diagram when two metering pumps are used in conjunction in first embodiment of the invention.
Figure 16 is structural schematic diagram when four metering pumps are used in conjunction in second embodiment of the invention.
Main element symbol description
100,300- metering pump, 2- cylinder body, 21- stationary cylinder, 211- inlet, 212- liquid outlet, 213- end plate, 2131-
Sliding eye, the first side plate of 214-, the second side plate of 215-, 216- third side plate, 23- cylinder body movable plate, 25- cylinder body opening, 4- are living
Plug assembly, 41- make movable plate, 43- piston extensible member, 431- ejector plate, 433- expansion plate, 4331- piston plate, 4332- connector sleeve,
4334- interts pin shaft, 435- ejection actuator, 436- scissors mechanism, 4361- shearing fork telescopic part, 4362- connecting shaft, 4363- peace
The fixed rod end of loading board, 4364- fork-shearing frame, 4365- dovetail groove, 4366-, 4367- mobile rod end, the hinged pivot pin of 4368-, 4369-
Connecting rod, 4360- dovetail slide block, 437- driver, 5- confined space, 6- installation space.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
It should be noted that it can be directly on another component when component is referred to as " being fixed on " another component
Or there may also be components placed in the middle.When a component is considered as " connection " another component, it, which can be, is directly connected to
To another component or it may be simultaneously present component placed in the middle.When a component is considered as " being set to " another component, it
It can be and be set up directly on another component or may be simultaneously present component placed in the middle.Term as used herein is " vertical
", " horizontal ", "left", "right" and similar statement for illustrative purposes only.
Unless otherwise defined, all technical and scientific terms used herein and belong to technical field of the invention
The normally understood meaning of technical staff is identical.Term as used herein in the specification of the present invention is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.Term " and or " used herein includes one or more phases
Any and all combinations of the listed item of pass.
Referring to Figure 1, first embodiment of the invention provides a kind of metering pump 100, including cylinder body 2 and is installed in cylinder body 2
On piston component 4.
In the present embodiment, cylinder body 2 is substantially in cube case shape, including stationary cylinder 21 and cylinder body movable plate 23.Please
Together referring to fig. 2 to Fig. 4, the side of stationary cylinder 21 forms cylinder body opening 25, is also spaced apart on stationary cylinder 21 and is equipped with inlet 211
And liquid outlet 212；Cylinder body movable plate 23 is slidably installed at cylinder body opening 25, and surrounds cylinder body sky jointly with stationary cylinder 21
Between, cylinder space is in cubic.
In the present embodiment, stationary cylinder 21 include two end plates 213, one first side plate 214, one second side plate 215 and
One third side plate 216.End plate 213 is substantially in cube plate, and two end plates 213 are oppositely arranged in parallel.Wherein on end plate 213
Perforation offers sliding eye 2131, and sliding eye 2131 is connected to cylinder space and far from 25 setting of cylinder body opening.First side plate
214, the second side plate 215 and third side plate 216 are substantially in cube plate, the first side plate 214, the second side plate 215 and third
Side plate 216 is sequentially connected and is arranged around the periphery of end plate 213, the phase of the opposite end of the first side plate 214, the second side plate 215
The opposite end at both ends and third side plate 216 is connect with two end plates 213 respectively.First side plate 214 and third side plate 216 are total
It is same to surround the cylinder body opening 25, cylinder body 25 generally rectangular openning shapes of opening.Inlet 211 is provided with the first side plate 214
On, and it is located at first one end of side plate 214 far from sliding eye 2131.Liquid outlet 212 is provided on third side plate 216, and equal position
In the one end of third side plate 216 far from sliding eye 2131.
Cylinder body movable plate 23 is substantially in cuboid plate, is matched with the shape of cylinder body opening 25.Cylinder body movable plate 23
The inner wall sliding contact with two end plates 213 respectively of wherein two opposite sides side, remaining two opposite sides side of cylinder body movable plate 23
Respectively with the inner wall sliding contact of the inner wall and third side plate 216 of the first side plate 214, it is open with sealing the cylinder body of stationary cylinder 21
25, so that cylinder body movable plate 23 and stationary cylinder 21 form the cylinder space, and improve the leakproofness of cylinder space.It is preferred that
Four peripheral walls on ground, cylinder body movable plate 23 are equipped with sealing ring (not shown), to further increase leakproofness.The setting category of sealing ring
In the prior art, to omit length, which is not described herein again.
Piston component 4 includes making movable plate 41 and piston extensible member 43.Make movable plate 41 to be slidably installed on stationary cylinder 21, it is living
Plug extensible member 43 is connect with movable plate 41 is made, and the inner wall sliding contact with the inner wall of stationary cylinder 21 and cylinder body movable plate 23, with
The confined space 5 for accommodating liquid material is formed in the cylinder space, confined space 5 connects with inlet 211 and liquid outlet 212
It is logical.Under the effect of external force, make movable plate 41 and be able to drive piston extensible member 43 along first direction reciprocating motion, cylinder body movable plate
23 can move back and forth along the second direction vertical with first direction to adjust the cross-sectional area of confined space 5, piston extensible member
43 can stress accordingly stretch in a second direction so that piston extensible member 43 can be kept in contact with cylinder body movable plate 23.
In the present embodiment, first direction is the short transverse of cylinder body 2 in Fig. 1, and second direction is cylinder body 2 in Fig. 1
Length direction.Please also refer to Figure 10, makees movable plate 41 substantially in cuboid plate, make one end of movable plate 41 via sliding eye 2131
It protrudes into cylinder space, the other end is located at outside cylinder space.Make side and 215 sliding contact of the second side plate of movable plate 41, actuation
The width of plate 41 and cylinder space it is of same size so that make movable plate 41 opposite sides can respectively with the first side plate 214
Inner wall and the inner wall of third side plate 216 be in contact.Preferably, make on side of the movable plate 41 towards the second side plate 215, make movable plate
On 41 sides towards the first side plate 214 and makees to be recessed with mounting groove on side of the movable plate 41 towards third side plate 216 (figure is not
Show), be installed with sealing strip (not shown) in mounting groove, three sealing strips respectively with the first side plate 214, the second side plate 215 and
Three side plates, 216 sliding contact, to prevent the liquid material edge in confined space 5 from making the gap leakage between movable plate 41 and stationary cylinder 21,
And then improve the leakproofness of confined space 5.The installation of sealing strip belongs to the prior art, and to omit length, which is not described herein again.
In the present embodiment, piston extensible member 43 includes ejector plate 431, expansion plate 433 and ejection actuator 435.It pushes away
Top plate 431 is oppositely arranged with movable plate 41 is made.In the present embodiment, ejector plate 431 is contained in cylinder space, and is moved with cylinder body
The inside sliding contact of movable plate 23；The opposite sides of expansion plate 433 respectively with make movable plate 41 and ejector plate 431 is connect, expansion plate
433 free side and the inner wall sliding contact of stationary cylinder 21, thus in expansion plate 433 close to inlet 211 and liquid outlet 212
Side formed confined space 5；Ejection actuator 435 is contained in cylinder space, and is located at expansion plate 433 backwards to confined space
5 side；Ejection actuator 435 connects ejector plate 431 and makees movable plate 41, to drive ejector plate 431 to move in a second direction, and
Expansion plate 433 is driven to stretch in a second direction.
In the present embodiment, ejector plate 431 is parallel with movable plate 41 is made.The substantially square plate of ejector plate 431, width
It is of same size with cylinder space so that the opposite sides of ejector plate 431 can respectively with the inner wall of the first side plate 214 and
The inner wall sliding contact of three side plates 216.Expansion plate 433 is substantially square, opposite sides respectively with make movable plate 41 far from sliding
The one end in hole 2131 and ejector plate 431 are connected far from one end of sliding eye 2131, and the free side of expansion plate 433 is respectively with first
The inner wall sliding contact of the inner wall and third side plate 216 of side plate 214.Confined space 5 is located at 433 dorsal glide hole 2131 of expansion plate
Side；Expansion plate 433 forms an installation space 6 backwards to the side of confined space 5.
Preferably, side, ejector plate 431 side towards first side plate 214 of the ejector plate 431 towards cylinder body movable plate 23
And recessed ejector plate 431 is equipped with fixing groove (not shown) towards the side of third side plate 216, is installed with sealing strip in fixing groove
(not shown), three sealing strips respectively with 216 sliding contact of cylinder body movable plate 23, the first side plate 214 and third side plate, to prevent
Liquid material in confined space 5 is improved from the gap leakage between ejector plate 431 and cylinder body movable plate 23 to installation space 6
The leakproofness of confined space 5.Sealing strip (not shown) is equally installed on the free side of expansion plate 433, it is closed to prevent
Liquid material in space 5 can be improved close from the gap leakage between 21 body 2 of expansion plate 433 and stationary cylinder to installation space 6
Close the leakproofness in space 5.
Please also refer to Fig. 7 to Fig. 9, in the present embodiment, expansion plate 433 includes successively hinged more in a second direction
Block piston plate 4331, specifically: each piston plate 4331 is connected with connector sleeve 4332, phase towards the side of adjacent pistons plate 4331
The connector sleeve 4332 of adjacent two piston plates 4331 is along the third direction vertical with first direction and second direction (cylinder body 2 in Fig. 1
Width direction) arrangement, and rotation connection is realized by interspersed pin shaft 4334, so that two neighboring piston plate 4331 is hinged on
Together.
Please referring also to fig. 4 to fig. 6 and Figure 10, ejection actuator 435 is located in installation space 6, including scissors mechanism 436
And driver 437.The opposite end of scissors mechanism 436 respectively with make movable plate 41 and ejector plate 431 is connect；Driver 437 with cut
It pitches mechanism 436 to connect, to drive scissors mechanism 436 that ejector plate 431 is driven to move, so that ejector plate 431 and cylinder body movable plate
23 inside offsets, while expansion plate 433 being driven to stretch in a second direction.
In the present embodiment, scissors mechanism 436 includes two shearing fork telescopic parts 4361 and a connecting shaft 4362, and two are cut
Fork extensible member 4361 is oppositely arranged in parallel along third direction.Each shearing fork telescopic part 4361 includes that two mounting plates 4363 and one are cut
Crotch 4364, two mounting plates 4363 respectively with make movable plate 41 and ejector plate 431 is fixedly connected, each mounting plate 4363 is equipped with
The dovetail groove 4365 extended in a first direction；The structure of fork-shearing frame 4364 belongs to the prior art, and it is solid that opposite end all has one
Fixed pole end 4366 and a mobile rod end 4367, two fixed rod ends 4366 are rotatablely connected with two mounting plates 4363 respectively, and two
Mobile rod end 4367 is slidably connected by a dovetail slide block 4360 with the dovetail groove 4365 on two mounting plates 4363 respectively；Scissor
The hinged pivot pin 4368 of frame 4364 is connected to the hinged place of adjacent two pieces of piston plates 4331 by connecting rod 4369, i.e., interspersed pin shaft
On 4334.Connecting shaft 4362 is located at fork-shearing frame 4364 close to the one end for making movable plate 41, and with two fork-shearing frames 4364 close to actuation
The mobile rod end 4367 of two of 41 one end of plate connects.Driver 437, which is installed in, to be made to connect on movable plate 41 and with connecting shaft 4362.It drives
Dynamic device 437 is preferably cylinder or hydraulic cylinder.Connecting shaft 4362 can be pushed to move along dovetail groove 4365 by driver 437, with
It drives two fork-shearing frames 4364 to stretch in a second direction, and then gives ejector plate 431 by fork-shearing frame 4364 and make movable plate 41 1
A thrust connects so that ejector plate 431 is kept in contact with cylinder body movable plate 23 and to make movable plate 41 with the holding of the second side plate 215
Touching, while the movement of fork-shearing frame 4364 and ejector plate 431 is able to drive expansion plate 433 and carries out corresponding stretching motion.
It is appreciated that can be equipped with check valve at inlet 211 and liquid outlet 212, the check valve at inlet 211 is only permitted
Perhaps liquid material enters in confined space 5 from inlet 211, and the check valve at liquid outlet 212 only allows liquid material from confined space 5 from out
Liquid mouth 212 is discharged, and belongs to the prior art, and to omit length, which is not described herein again.
Embodiment of the present invention also provides a kind of liquid material output method using the metering pump, for by N kind liquid material according to
The output of preset mixed proportion, wherein N is the natural number not less than 2, the liquid material output method the following steps are included:
Step S1, provides N number of metering pump 100, and N number of metering pump 100 is respectively used to conveying N kind liquid material.Refer to figure
15, structural schematic diagram when being used in conjunction for two metering pumps 100, at this point, the stationary cylinder 21 of two metering pumps 100 is fixedly connected on
Together, in the present embodiment, the second side plate 215 of two metering pumps 100 is fixed together.It is appreciated that metering pump
100 quantity is not limited to two, can be designed as other numbers.
Step S2 passes through the movement of cylinder body movable plate 23 and stretching for piston extensible member 43 according to the liquor charging amount of every kind of liquid material
It contracts to adjust the cross-sectional area of N number of 100 confined space 5 of metering pump respectively；Wherein, a drive can be used in the movement of cylinder body movable plate 23
Dynamic device driving, the driving device preferably use worm and gear driving device, High power output, and self-locking effect good, and positioning is quasi-
Really.The structure of worm and gear driving device belongs to the prior art, and to omit length, which is not described herein again.
The flexible of expansion plate 433 is driven by ejection actuator 435, when driver 437 is drivingly connected axis 4362 towards separate
Sliding eye 2131 direction movement when, fork-shearing frame 4364 is stretched, drive ejector plate 431 towards cylinder body movable plate 23 move with
Cylinder body movable plate 23 is close to；When driver 437, which is drivingly connected axis 4362, to be moved towards sliding eye 2131, fork-shearing frame 4364 is received
Contracting, so that expansion plate 433 is compressed.It can ensure that ejector plate 431 is close to cylinder body movable plate 23 by the setting, so that it is guaranteed that
The leakproofness of confined space 5.
Step S3 drives the movable plate 41 of making of N number of metering pump 100 to move synchronously pre-determined distance h with piston extensible member 43: when
Piston extensible member 43 enables to confined space 5 to become larger (attached drawing on the left side Figure 14) when moving towards sliding eye 2131, at this point, close
Space 5 is closed in negative pressure, liquid material enters via inlet 211 in the confined space 5 of metering pump 100, when piston extensible member 43 is towards remote
Direction from sliding eye 2131 makes confined space 5 become smaller (attached drawing on the right of Figure 14) when moving, and liquid material is via 212 row of liquid outlet
Out outside confined space 5.The each liquor charging amount of every kind of liquid material is that corresponding measurement pumps the cross-sectional area of 100 confined spaces 5 and makees movable plate
The product of 41 move distance h.The movement for making movable plate 41 preferably uses a driving device, such as hydraulic cylinder etc. to drive, and belongs to existing
There is technology, to omit length, which is not described herein again.It preferably, can also be by multiple one end making movable plate 41 and being located at outside cylinder space
It is linked together by connectors such as connecting plates, to ensure that the movement of movable plate 41 of making of multiple metering pumps 100 synchronizes.
Please also refer to Figure 11 to Figure 13 and Figure 16, second embodiment of the invention provides a kind of metering pump 300, with
The structure of metering pump 100 is roughly the same in one embodiment, including cylinder body 2 and the piston component 4 being installed on cylinder body 2, cylinder
Body 2 includes stationary cylinder 21 and cylinder body movable plate 23, the difference is that: in the present embodiment, opened up on two end plates 213
There is sliding eye 2131；The quantity of piston component 4 is two, and structure is identical as first embodiment, two 4 edges of piston component
First direction is oppositely arranged, and two one end for making movable plate 41 are protruded into cylinder space from two sliding eyes 2131 respectively, and two
Make one end that movable plate 41 is located in cylinder space to link together, in the present embodiment, two piston components 4 make movable plate 41
It is integrally molded so as an entirety.Cylinder space is divided into installation space 6 and is located at by the piston extensible member 43 of two piston components 4
Two confined spaces 5 of 6 opposite end of installation space；The quantity of inlet 211 and liquid outlet 212 is two, two feed liquors
Mouth 211, which is provided with respectively on two end plates 213 and respectively with two confined spaces 5, to be connected to, and two liquid outlets 212 are provided with respectively
It is connected on two end plates 213 and respectively with two confined spaces 5.
Referring to Figure 12, when up moving as movable plate 41 along first direction, the confined space 5 being located above becomes smaller, and makes
The liquid material that confined space 5 must be located above is discharged from corresponding liquid outlet 212, meanwhile, underlying confined space 5 becomes larger,
So that the inlet 211 of liquid material from below enters in underlying confined space 5.It is transported down as movable plate 41 along first direction
When dynamic, the confined space 5 being located above becomes larger, so that liquid material enters the confined space 5 being located above from the inlet 211 of top
It is interior, meanwhile, underlying confined space 5 becomes smaller, so that being located below the liquid material of confined space 5 from corresponding liquid outlet 212
Discharge.By this kind of structure, enables to liquid material to be alternately discharged from two liquid outlets 212, improve the continuity of operation, Jin Eryou
Conducive to the raising of working efficiency.When being applied to the mixing of a variety of liquid materials, multiple metering pumps 300 can be used in conjunction, such as Figure 16, this
When, the quantity of metering pump 300 is four.Preferably, the stationary cylinder 21 of four metering pumps 300 is fixed together.
It is appreciated that in other embodiments, the ejector plate 431 and ejection actuator 435 of piston component 4 can save
Slightly, at this point, the side of expansion plate 433 and cylinder body movable plate 23 can be slidably connected together, for example, can be in 433 face of expansion plate
It is equipped with dovetail slide block to the side of cylinder body movable plate 23, and is equipped with towards the side of expansion plate 433 along the in cylinder body movable plate 23
The dovetail groove that one direction extends, dovetail slide block are slidably connected with dovetail groove.At this point, shifting of the expansion plate 433 with cylinder body movable plate 23
It moves and stretches.However, this kind of mode can make the sealing performance of confined space 5 be deteriorated, the precision of metering pump 100 and service life
It reduces.
It is appreciated that the structure of expansion plate 433 is not limited to present embodiment, can also be stretched using in the prior art other
433 structure of contracting plate.
It is appreciated that in other embodiments, ejector plate 431 can also be extended to far from one end of expansion plate 433
Outside cylinder space.
It is appreciated that metering pump 100 is not exclusively for use on foaming machine, it can also apply and need to carry out liquid material output at other
Equipment on.
Above description is the detailed description for the present invention preferably possible embodiments, but embodiment is not limited to this hair
Bright patent claim, it is all the present invention suggested by technical spirit under completed same changes or modifications change, should all belong to
In the covered the scope of the patents of the present invention.
Claims (9)
1. a kind of liquid material output method using metering pump is used to export N kind liquid material according to preset mixed proportion, wherein N
For the natural number not less than 2, which comprises the following steps:
N number of metering pump is provided, N number of metering pump is respectively used to conveying N kind liquid material, and each metering pump includes cylinder body and piston group
Part, the cylinder body include stationary cylinder and cylinder body movable plate, and the side of the stationary cylinder forms cylinder body opening, goes back on the stationary cylinder
Compartment of terrain offers inlet and liquid outlet；The cylinder body movable plate is slidably installed in the cylinder body opening, and with it is described
Stationary cylinder surrounds a cylinder space jointly；The piston component includes making movable plate and piston extensible member, described to make movable plate slidably
Be installed on the stationary cylinder, the piston extensible member and it is described make movable plate connection, and with the inner wall of the stationary cylinder and described
The inner wall sliding contact of cylinder body movable plate, it is described close to form the confined space for accommodating liquid material in the cylinder space
Space is closed to be connected to the inlet and the liquid outlet；Under the effect of external force, described to be able to drive the work as movable plate
Plug extensible member is moved back and forth along a first direction, and the cylinder body movable plate can be along the second direction vertical with the first direction
Move back and forth to adjust the cross-sectional area of the confined space, the piston extensible member can stress it is corresponding along the second direction
It is flexible, so that the piston extensible member can be kept in contact with the cylinder body movable plate；
According to the liquor charging amount of every kind of liquid material, pass through the flexible N number of to adjust respectively of the movement of cylinder body movable plate and piston extensible member
The cross-sectional area of metering pump confined space；
The actuation strip piston extensible member of N number of metering pump is driven to move synchronously: when piston extensible member moves so that confined space
When becoming larger, liquid material enters via corresponding inlet in the confined space of corresponding measurement pump, when the movement of piston extensible member makes
Confined space when becoming smaller, liquid material is discharged outside the confined space via corresponding liquid outlet；The liquor charging amount of every kind of liquid material is phase
It answers the cross-sectional area of metering pump confined space and makees the product of movable plate move distance.
2. liquid material output method as described in claim 1, it is characterised in that: the piston extensible member includes ejector plate, stretches
Plate and ejection actuator, the ejector plate are oppositely arranged with described as movable plate, and the ejector plate is interior with the cylinder body movable plate
Slideslip contact, the side sliding contact for making the movable plate cylinder body movable plate opposite with the stationary cylinder, the expansion plate
In the cylinder space, the opposite sides of the expansion plate makees movable plate and ejector plate is connect with described respectively, described flexible
The free side of plate and the inner wall sliding contact of the stationary cylinder；The ejection actuator is located at the expansion plate backwards to described close
The side in space is closed, and connects the ejector plate and makees movable plate with described, to drive the ejector plate to move along the second direction,
And the expansion plate is driven to carry out stretching motion along the second direction.
3. liquid material output method as claimed in claim 2, it is characterised in that: the ejection actuator includes scissors mechanism and drive
Dynamic device, the opposite end of the scissors mechanism make movable plate and the ejector plate is connect with described respectively, and the driver is installed in
It is described to make to connect on movable plate and with the scissors mechanism, to drive the scissors mechanism to drive the expansion plate and the ejector plate
Movement.
4. liquid material output method as claimed in claim 3, it is characterised in that: the scissors mechanism includes two shearing fork telescopic parts
And a connecting shaft, two shearing fork telescopic parts are oppositely arranged in parallel, each shearing fork telescopic part includes two mounting plates and a fork-shearing frame,
Two mounting plates make movable plate and the ejector plate is fixedly connected with described respectively, and each mounting plate is equipped with along the first direction
The dovetail groove of extension；The opposite end of the fork-shearing frame all has a fixed rod end and a mobile rod end, two fixed rod ends point
It is not rotatablely connected with two mounting plates, two mobile rod ends pass through a dovetail slide block respectively and the dovetail groove on two mounting plates is sliding
Dynamic connection；The hinged pivot pin of the fork-shearing frame also passes through connecting rod and connect with the expansion plate；The connecting shaft is located at described cut
One end of crotch, and connect with two mobile rod ends for being located at described fork-shearing frame the same end；The driver and the connecting shaft
Connection.
5. liquid material output method as claimed in claim 2, it is characterised in that: the expansion plate include along the second direction according to
Secondary hinged muti-piece piston plate, the connecting rod are connected to the hinged place of adjacent two pieces of piston plates.
6. liquid material output method as described in claim 1, it is characterised in that: one end sliding for making movable plate is pierced by described solid
Determine cylinder and be located at outside the cylinder space, the ejector plate is located in the cylinder space.
7. liquid material output method as described in claim 1, it is characterised in that: the cylinder space is in cubic.
8. liquid material output method as described in claim 1, it is characterised in that: the quantity of the piston component is two, two
The piston component is oppositely arranged along the first direction, and two piston components link together as movable plate, two piston groups
The cylinder space is divided into installation space and positioned at two institute of the installation space opposite end by the piston extensible member of part
State confined space；The quantity of the inlet and the liquid outlet is two, and two inlets are described closed with two respectively
Space connection, two liquid outlets are connected to two confined spaces respectively.
9. liquid material output method as described in claim 1, it is characterised in that: the stationary cylinder of N number of metering pump is fixedly connected on one
It rises.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910606279.0A CN110397566B (en) | 2019-07-05 | 2019-07-05 | Liquid material output method adopting metering pump |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910606279.0A CN110397566B (en) | 2019-07-05 | 2019-07-05 | Liquid material output method adopting metering pump |
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| CN110397566A true CN110397566A (en) | 2019-11-01 |
| CN110397566B CN110397566B (en) | 2020-10-30 |
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| CN201910606279.0A Expired - Fee Related CN110397566B (en) | 2019-07-05 | 2019-07-05 | Liquid material output method adopting metering pump |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111232168A (en) * | 2020-01-13 | 2020-06-05 | 哈尔滨工程大学 | Ballast water tank based on gear scissor fork mechanism |
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| WO2018143897A1 (en) * | 2017-02-01 | 2018-08-09 | Igo Sajovic | Piston machine |
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| US5024584A (en) * | 1987-11-30 | 1991-06-18 | Tetra Dev-Co | Pump unit with adjustable piston stroke length |
| CN104968940A (en) * | 2012-09-25 | 2015-10-07 | 孙威 | Reciprocating low-speed heavy-load hydraulic pump with variable action area |
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| CN110397566B (en) | 2020-10-30 |
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