CN103826759A - Method for preventing pack-out in pumping system - Google Patents
Method for preventing pack-out in pumping system Download PDFInfo
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- CN103826759A CN103826759A CN201280044403.5A CN201280044403A CN103826759A CN 103826759 A CN103826759 A CN 103826759A CN 201280044403 A CN201280044403 A CN 201280044403A CN 103826759 A CN103826759 A CN 103826759A
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- 238000005086 pumping Methods 0.000 title claims abstract description 34
- 238000000034 method Methods 0.000 title claims abstract description 29
- 239000000463 material Substances 0.000 claims abstract description 29
- 230000000694 effects Effects 0.000 claims abstract description 9
- 238000002156 mixing Methods 0.000 claims description 52
- 238000011049 filling Methods 0.000 claims description 14
- 239000002131 composite material Substances 0.000 claims description 12
- 238000010438 heat treatment Methods 0.000 claims description 11
- 239000000289 melt material Substances 0.000 claims description 7
- 238000002844 melting Methods 0.000 claims description 5
- 230000008018 melting Effects 0.000 claims description 5
- 238000007599 discharging Methods 0.000 claims 1
- 239000012943 hotmelt Substances 0.000 abstract description 24
- 238000012544 monitoring process Methods 0.000 abstract description 2
- 239000000155 melt Substances 0.000 abstract 1
- 239000000470 constituent Substances 0.000 description 42
- 239000012530 fluid Substances 0.000 description 32
- 239000007788 liquid Substances 0.000 description 11
- 238000009826 distribution Methods 0.000 description 10
- 239000002245 particle Substances 0.000 description 10
- 229920000642 polymer Polymers 0.000 description 8
- 239000004831 Hot glue Substances 0.000 description 7
- 230000003213 activating effect Effects 0.000 description 7
- 238000004891 communication Methods 0.000 description 7
- 239000000853 adhesive Substances 0.000 description 6
- 230000001070 adhesive effect Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 239000000203 mixture Substances 0.000 description 5
- 230000004913 activation Effects 0.000 description 4
- 239000011324 bead Substances 0.000 description 4
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 4
- 230000009467 reduction Effects 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 239000006185 dispersion Substances 0.000 description 3
- 238000005538 encapsulation Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000010992 reflux Methods 0.000 description 2
- 239000011343 solid material Substances 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000037452 priming Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Images
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
- F04B23/00—Pumping installations or systems
- F04B23/02—Pumping installations or systems having reservoirs
- F04B23/025—Pumping installations or systems having reservoirs the pump being located directly adjacent the reservoir
-
- 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
- F04B15/00—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts
- F04B15/02—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts the fluids being viscous or non-homogeneous
-
- 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
- F04B49/06—Control using electricity
- F04B49/065—Control using electricity and making use of computers
-
- 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
- F04B53/08—Cooling; Heating; Preventing freezing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
- B05C11/10—Storage, supply or control of liquid or other fluent material; Recovery of excess liquid or other fluent material
- B05C11/1042—Storage, supply or control of liquid or other fluent material; Recovery of excess liquid or other fluent material provided with means for heating or cooling the liquid or other fluent material in the supplying means upstream of the applying apparatus
-
- 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
- F04B2201/00—Pump parameters
- F04B2201/02—Piston parameters
- F04B2201/0201—Position of the piston
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Coating Apparatus (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Loading And Unloading Of Fuel Tanks Or Ships (AREA)
Abstract
A method for preventing pack-out in a system for pumping hybrid hot-melt material comprises monitoring activity of a pump that pumps hybrid hot-melt material, shutting off a heater that melts pumped hybrid hot-melt material at an inactivity threshold level, and relieving pump pressure.
Description
Technical field
Present disclosure relate generally to is for the pumping system of hot melt material, as which pumping system for distributing the adhesive that is used in encapsulation.More specifically, present disclosure relates to the control method for operating the pumping system for distributing heat of mixing melt material.
Background technology
Traditionally, hot melt system operation is to send into pumping system for melting solid polymer bead before being sent to distributor by liquid hot melt bead.These systems need to be at the hopper from for not heating bead the whole route heat hot liquation state to distributor.This need to use multiple heaters in system.For example, hopper, pump and manifold are configured to heated individual unit, and manifold is connected to distributor by the flexible pipe of heating.Heater increases the power consumption of this system, thereby increases operating cost.The recent progress of hot-melt technology has related to the use of blending constituent, wherein the polymer particle of inhomogeneous dispersion is suspended in the liquid component being adsorbed, as licensing to the people such as Stumphauzer, be transferred to as described in the U.S. Patent No. 7,285,583 of H.B.Fuller company.At the distribution system for this blending constituent, before distributing, conventionally before just entering distributor, heat is not applied to described composition, as licensing to the people such as Stumphauzer, be transferred to as described in the U.S. Patent No. 7,221,859 of H.B.Fuller company.
Blending constituent allocation units run into the phenomenon that is called " filling up (pack-out) ", and wherein liquid component is by emptying from pumping unit, and solid polymer particle is stayed in pump.When pumping system is in pump is wherein pressurized but when the standby mode that hot melt material is not pumped, the pressure in pump causes that liquid component refluxes through seal to the area of low pressure of pump and leaks.In the situation that only solid particles stays, there is the trend of deadlock in pump machanism.Therefore need to safeguard the particle filling up to remove, this causes the delay of production line.Be developed and solved the existing system filling up and relate in backfeed loop material is recycled continuously by pump, even to prevent the backflow of liquid component when the unallocated hot melt material.Typically, throttle orifice is arranged in recirculation circuit to maintain the back pressure for distributing, but allows to rethink certain flowing.This system increases the complexity of whole system and has increased power demand, thereby has first eliminated some benefits of blending constituent hot melt system.Therefore, there is the demand to improved hot melt distribution system.
Summary of the invention
The present invention relates to for preventing the method for filling up for the system of pumping heat of mixing melt material.The method comprises the activity of the pump that monitors pumping heat of mixing melt material, closes the heater for melting the heat of mixing melt material being pumped at outage threshold level place, and discharges pump pressure.
Accompanying drawing explanation
Fig. 1 is melt into point, comprises the schematic diagram of the hot melt distribution system of pump assembly, heater and distribution rifle for the heat of mixing.
Fig. 2 is the schematic diagram of the pump assembly of Fig. 1, and the interconnection of the electronic component of composite material container, hopper, air motor, pump, fluid outlet part, relief valve and the execution control to hot melt distribution system is shown.
Fig. 3 be general introduction Fig. 2 electronic component performed to prevent the block diagram of the method for filling up in pump assembly.
The specific embodiment
Fig. 1 is melt into point, comprises pump assembly 12, heater 14 for the heat of mixing and distributes the schematic diagram of the hot melt distribution system 10 of rifle 16.Pump assembly 12 is fluidly connected to heater 14 by fluid line 18.Pump assembly 12 is electrically connected to heater 14 by communication line 20.Heater 14 is connected to distributor 16 at coupling 22 places.
The pump assembly 12 being described in more detail with reference to Fig. 2 comprises the former moving mechanical pump that flows to heater 14 that fluent material is provided.In described embodiment, fluent material comprises heat of mixing melt adhesive composition (" blending constituent "), it comprises the polymer particle that is suspended in the inhomogeneous dispersion in the liquid component being adsorbed, as licensed to the people's such as Stumphauzer United States Patent (USP) NO.7, as described in 285,583.But the present invention can be for distributing solid particles to be wherein blended in the pumping system of the blending constituent of any type in fluent material.Electronic component in pump assembly 12 makes pump turn round to provide the composite material of desirable amount of flow to heater 14.Electronic component also makes heater 14 move to provide the polymer particle of needed heat output to disperse in melting heat melt adhesive composition, thus activated adhesive material.In one embodiment, heater 14 comprises online heater, and wherein coupling 22 is connected to fluid line 18 outlet valve of distributor 16 continuously.For example, heater 14 can comprise as licensed to the people's such as Stumphauzer United States Patent (USP) NO.7, the online heater of describing in 221,859.The mixture of the fusing of hotmelt flows into distributor 16, distributor 16 applying adhesive in a controlled manner.Distributor 16 can comprise can be by direct manually operated hand-held spray guns, or the module that can be operated by the controller of the part as automatic processing.Therefore, in application-specific, hot glue can be applied to surface, as the surface of encapsulation, case etc.
Room temperature place around, fluent material has enough viscosity to flow to heater 14 from pumping system 12 under pump pressure.Therefore, fluid line 18 is both not heated is not isolated yet.Heater 14 be provided for by blending constituent activate into uniformly, the necessary all heat inputs of the hot glue of viscosity.Hot glue also flows to distributor 16 by coupling 22 from heater 14 under the pressure from pumping system 12.Heater 14 provides enough thermal output and is suitably connected to distributor 16, makes blending constituent to be maintained in hot melt state distributor 16 is interior from the heat of heater 14.But in other embodiments, distributor 16 is provided with independent heating element heater.Further, in some configurations, coupling 22 can comprise heated flexible pipe etc.Can use any online heating system as known in the art, as stratie.In such an embodiment, about the present invention, with similar these heaters of mode control of heater 14.Therefore, distributor 16 receives the blending constituent in the state in preparing coating.Due to all having eliminated by pumping system and in leaving whole paths of distributor the needs that heat as known in the art blending constituent, this system is favourable with respect to existing solid-bead system.
Hot melt distribution system 10 therefore can by continuously or batch (-type) operate to distribute hot glue, only need between heater 14 and distributor 16, activate a small amount of blending constituent simultaneously.(heating) blending constituent activating becomes uniform solid material in the time being cooled to room temperature.Solid material can refuse become hot glue, but the blending constituent as provided at first can not be provided.Therefore, any heating to be back in fluid line 18 or pumping system 12 be all undesirable with the blending constituent activating.In conventional existing system, the blending constituent that this event need to heat the activation of this system enters any parts wherein to remove the adhesive solidifying.As long as existing system used continuously or by the interval batch (-type) with short use, this can not occur conventionally.But, if existing system keeps idle running within a time cycle, be moved back in fluid line from the branch that is mixed into of the activation of heater, in fluid line, it can solidify and block system.Further, this system may individually stand the situation of filling up.The invention provides a kind of control method for system 10, it prevents the appearance of the situation of filling up, thereby prevents from that the blending constituent of self-activating heater 14 moves back by system 10.
Fig. 2 is the schematic diagram of the pump assembly 12 of Fig. 1, and the interconnection of the electronic component 34 of composite material container 24, hopper 26, motor 28, pump 30, fluid outlet part 32, relief valve 33 and the control of execution to hot melt distribution system 10 is shown.Pump 30 comprises entrance 36, outlet 38 and fluid line 40 and 42.Relief valve 33 is positioned in return line 44, and return line 44 links together fluid outlet part 32 and hopper 26.Electronic component 34 comprises communication line 20, and communication line 20 is connected to position sensor 46, relief valve 33 and motor 28.
Pump 30 comprises for pressurizeing from the pump of the fluent material of hopper 26.Pump 30 can comprise any conventional pumps known in the art.For example, in one embodiment, pump 30 can comprise positive displacement pump, as membrane pump or linear displacement piston pump.Pump 30 is driven by motor 28, and motor 28 can comprise any conventional motor known in the art.For example, motor 26 can comprise that rotation is for providing air motor or the electro-motor of the axle of power to pump 30.Electronic component 34 optionally operates motor 28 with driving pump 30 based on operator's input or programming program.
The entrance 36 of pump 30 is such as being fluidly connected to hopper 26 by fluid line 40.Hopper 26 comprises container or the receiver that can keep hot melt material container 24 and material be guided into the entrance 36 of pump 30.For example, hopper 26 can have infundibulate shape and maybe can have the independent pump for priming pump 30.As mentioned above, hot melt material container 24 comprises blending constituent, and this blending constituent comprises the polymer particle that is suspended in the inhomogeneous dispersion in the liquid component being adsorbed.In one embodiment, containers 24 comprises the pocket-in-case packing that can be placed in hopper 26 or on the top of hopper 26.The outlet 38 of pump 30 is fluidly connected to fluid outlet part 32 by fluid line 42.Fluid outlet part 32 comprises the pressure fluid that receives self-pumping 30 fluid manifold of pressure fluid being guided into fluid line 18 and return line 44.Fluid line 18 extends to heater and distributor, as heater 14 and distributor 16 (Fig. 1).Return line 44 extends to material hopper 26.Controlled by relief valve 33 by flowing of return line 44, relief valve 33 can optionally be controlled by electronic component 34.
Electronic component 34 is conventionally with automated manner operation hot melt distribution system 10.Like this, electronic component 34 comprises computer system, and as known in the art, computer system comprises processor, memory, graphic alphanumeric display, user interface, memory etc.Under normal and typical service condition, electronic component 34 can maintain system 10 state that (heating) blending constituent activating can be assigned with at distributor place.Under this condition, motor 28 starts pump 30 to be maintained in pressurization running status.Like this, pump 30 receives from the uninflated fluid of hopper 26 and in outlet 38 downstreams and maintains pressure fluid.And electronic component 34 starts heater 14 to produce heat or thermal output.Therefore the blending constituent that, is pushed to distributor 16 by pump 30 is first by heater 14.The thermal output of heater 14 causes the polymer particle fusing suspending in liquid component, thereby forms hot glue.Therefore, the blending constituent of pressurization and not heating is provided to heater 14, and the blending constituent of pressurization and heating is provided heater 14 and distributor 16.Therefore, can be manually or automatically operation commutator 16 to distribute the blending constituent activating.
Sometimes system 10 remains in the state of normal operation, such as in the situation that motor 28 and heater 14 move, but in the time that the blending constituent activating is not assigned with.If system 10 is not expected the time cycle for extending, as in the time within one day, finishing or produce in shifts, conventionally wish to close whole system.As the short dwelling period between batch operation does not affect the operation of system 10.But if system 10 keeps power supply within the time cycle extending in the situation that not distributing any fluid, system 10 may run into the phenomenon that is called " filling up ", wherein the polymer particle of the not hot melt in the mixed composition of pump 30 stops up.This phenomenon occurs be maintained in the state that has pressure reduction between entrance 36 and outlet 38 during at pump 30.This pressure reduction can cause that the liquid component of blending constituent refluxes through this system, particularly passes the seal of pump 30.
In existing system, pump can become malfunctioning, and the heated branch that is mixed into is back to fluid line from heater.Once heated blending constituent moves away from heater, it solidifies after a time cycle, therefore stops up fluid relation.This causes that system can not operate, thus the loss production time.Need maintenance system to remove the blending constituent of solidifying with the fluid line from heater upstream.The blending constituent of solidifying can be melted again by heat, once but it to have moved away heater in fluid line enough far away, need to introduce external heat source and from existing system, remove the blending constituent of solidifying.In the present invention, electronic component 34 carry out executing arithmetic with prevent pump 30 in the situation that there is no distributing fluids extend time cycle intrinsic pressure under move.
Fig. 3 is the performed block diagram that prevents the method for filling up in pump 30 of electronic component 34 of general introduction Fig. 2.At step 100 place, hot melt distribution system 10 is activated to start to distribute the blending constituent of activation or the process of hot glue.Particularly, electronic component 34 is sent to signal heater 14 on communication line 20.Heater 14 activates the blending constituent in distributor 16 subsequently.In one embodiment, heater 14 is connected directly to the outlet valve in distributor 16, makes heater 14 only activate the blending constituent that preparation is assigned with immediately.As mentioned, electronic component 34 is also sent to signal any other heater using in system 10.Blending constituent in the pipeline 18 of heater 14 upstreams remains hot melt not.At step 105 place, pump 30 is activated, as signal being sent to motor 28 on communication line 20 by electronic component 34.Therefore, pump 30 is operated the blending constituent of pressurization to be outwards sent to fluid outlet part 32 and distributor 16.Like this, system 10 is ready to distribute the composite material activating.
At step 110 place, electronic component 34 monitors the activity of pump 30.Particularly, electronic component 34 is communicated by letter with the position sensor 46 that is connected to pump 30 by communication line 20.Position sensor 46 is provided by the motion of whether just carrying out the parts of the indication of effective pumping that provides of pump 30.For example, position sensor 46 can monitor the position for the axis of the piston of the linear displacement piston pump that is shifted.Alternatively, can be by monitoring that the activity of distributor 16 monitors the activity of pump 30 indirectly.Therefore, the trigger of distributor 16, starting bar or nozzle can be provided with motion sensor or position sensor.Therefore,, at step 110 place, electronic component 34 monitors that pump 30 is with detected activity continuously.Electronic component 34 maintains the counter or the clock that when motion in pump 30 stops, being activated.In described embodiment, electronic component 34 maintains the single clock of two threshold levels that stop that being identified for pump 30.In other embodiments, electronic component 34 comprises each two independent clocks determining individually a threshold level.
After electronic component 34 determines that pump 30 has dallied and is called the first threshold level of " idle running " threshold level, electronic component 34 makes system 10 enter standby mode at step 120 place.In standby mode, the signal that electronic component 34 reduces command heater 14 thermal output on communication line 20 is sent to heater 14.Thermal output step-down is to the level that prevents that composite material is activated, thereby provides cost savings with the energy output reducing.This thermal output level is maintained enough height to allow heater 14 to get back to rapidly running temperature in the time again wishing or need the operation of system 10.Knowing will reuse system 10 in the short time cycle time, as after attended operation or predetermined interruption, standby mode can start in first threshold level.The time of first threshold level can be arranged and adjust at electronic component 34 places by the operator of system 10.
When in standby mode, electronic component 34 continues to monitor the activity of pumps 30.If additional time quantum exceedes the first " idle running " threshold value to reach Second Threshold level or " stopping " threshold value, electronic component 34 starts the parts of shutdown system 10 at step 130 place.First, close or interrupting heater 14 at step 150 place.At step 160 place, closed or power-off pump 30 by electronic component 34.Particularly, electronic component 34 order motors 28 and heater 14 shut-down operations.The stopping of motor 28 causes that pump 30 no longer produces on one's own initiative pressure reduction between entrance 36 and outlet 38, thereby eliminated the condition of filling up that there will be.Heater 14 stop preventing from melting additional blending constituent.In step 170, pass by after time enough length, the blending constituent in heater 14 is finally cooled to and occurs the temperature of solidifying.Like this, the blending constituent of solidifying in heater 14 can again be melted in the time starting heater 14, but in fluid line 18, the composite material except heater 14 keeps un-activation in suspension liquid state.Therefore the blending constituent that, prevents activation is to returning drift or moving to fluid line 18 or pump assembly 12.At step 180 place, pump 30 is depressurized, to allow any remaining extruding blending constituent in the system of staying 10 (such as pipeline 42 and 44) to be drawn back to hopper 26.Particularly, the signal that electronic component 34 is opened order relief valve 33 is sent to relief valve 33.Relief valve 33 can comprise any suitable self-closing valve.Because all composite materials that have been activated all will solidify when cooling in heater 14, therefore, in the time that valve 33 is opened, only unactivated blending constituent will flow back into fluid outlet part 32, pipeline 42 and pump 38 from fluid line 18.Like this, system 10 enters halted state completely, does not wherein have pumping and heating to occur, and can not distribute.In this state, owing to there is not pressure reduction at entrance 36 and outlet between 38, therefore prevent from occurring moving back of liquid component in blending constituent in pump 30.Like this, prevent that the blending constituent activating from entering the wherein disabled system 10 of heat from heater 14.And, prevent filling up of pump 30.
At step 190 place, electronic component 34 restarting systems 10.Particularly, return to the electric power of pump 30 and heater 14.And relief valve 33 is back to closed condition.In one embodiment, system 10 provides to indicate to electronic component 34 operator and is restarted.In another embodiment, electronic component 34 is as a part of restarting systems 10 of pre-programmed program.For example, after system 10 keeps operation during at end-of-shift, electronic component 34 can make system 10 enter stand-by state and enter subsequently stop mode.Electronic component 34 can make system 10 turn back to running status subsequently in the time of upper once displacement beginning.
Although the present invention has been described with reference to preferred embodiment, it will be recognized by those skilled in the art, without departing from the spirit and scope of the present invention in the situation that, can change in form and details.
Claims (25)
1. for preventing that the method comprises the steps: for a method of filling up for the system of pumping composite material
Monitor the activity of the pump of pumping composite material;
In outage threshold level, place closes the heater for melting the composite material being pumped; And
Discharge pump pressure.
2. method according to claim 1, also comprises the steps:
Before discharging pump pressure, composite material is solidified in heater.
3. method according to claim 1, the step that wherein discharges pump pressure comprises the composite material of pressurization is sent to pump intake from pump discharge.
4. method according to claim 1, the step that wherein discharges pump pressure comprises opens relief valve.
5. method according to claim 1, also comprises the steps:
Give the motor power-off that drives described pump at outage threshold level place.
6. method according to claim 1, wherein outage threshold comprises the time cycle that described pump does not move.
7. method according to claim 1, also comprises the steps:
Before outage threshold place closes heater, reduce the thermal output of heater at idle running threshold level place.
8. method according to claim 7, wherein the time cycle of outage threshold is longer than the time cycle of idle running threshold value.
9. method according to claim 1, also comprises the steps:
Restart this system.
10. method according to claim 9, the step that wherein restarts this system comprises:
Pressurize to pump; With
Start heater.
11. methods according to claim 10, wherein comprise to the step of pump pressurization:
Close pump relief valve; With
Give pump motor power supplying.
12. methods according to claim 9, the step that wherein restarts this system comprises:
Automatically restart this system.
13. methods according to claim 1, wherein monitor that the movable step of pump comprises definite position of pump shaft or the position of definite distributor control lever.
14. 1 kinds of material pumping systems, comprising:
The pump of pumping material, this pump has entrance and exit;
Receive the heater from the pumping material of described outlet;
Receive the distributor from the heated pumping material of heater; With
Electronic component, monitors the movable of pump and is configured in outage threshold level place the output that reduces heater and pump.
15. material pumping systems according to claim 14, wherein heater is connected to distributor by flexible pipe and separates with pump discharge.
16. material pumping systems according to claim 14, also comprise:
Be connected to pump the position sensor with electronic component telecommunication.
17. material pumping systems according to claim 14, also comprise:
Be positioned in return line and with the relief valve of electronic component telecommunication, this return line is fluidly connected described entrance with described outlet.
18. material pumping systems according to claim 17, also comprise:
Be connected to the material hopper of the return line between pump intake and pump discharge.
19. material pumping systems according to claim 14, also comprise:
Be configured to the motor for driving described pump.
20. material pumping systems according to claim 14, wherein:
Electronic component is configured in and detects described pump and stopped closing after the cycle very first time heater and pump.
21. material pumping systems according to claim 20, wherein:
Electronic component is configured in and detects the output that reduces heater after the second time cycle that described pump stopped being less than the cycle very first time.
22. 1 kinds for preventing that the method comprises the steps: for the method for filling up of the system of pumping heat of mixing melt material
With pump pumping heat of mixing melt material;
With heater heating heat of mixing melt material;
The activity of testing pump;
Determine the first dwelling period;
Reduce the thermal output of heater; And
Described pump reduces pressure.
23. methods according to claim 22, the step that wherein reduces the thermal output of heater comprises to heater power-off.
24. methods according to claim 23, the step of the described pump that wherein reduces pressure comprises closes pump motor.
25. methods according to claim 24, the step of the described pump that wherein reduces pressure also comprises opens the pressure relief valve that is fluidly connected to described delivery side of pump.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US201161533904P | 2011-09-13 | 2011-09-13 | |
| US61/533,904 | 2011-09-13 | ||
| PCT/US2012/055048 WO2013040147A2 (en) | 2011-09-13 | 2012-09-13 | Method for preventing pack-out in pumping system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103826759A true CN103826759A (en) | 2014-05-28 |
Family
ID=47883959
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201280044403.5A Pending CN103826759A (en) | 2011-09-13 | 2012-09-13 | Method for preventing pack-out in pumping system |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20140193277A1 (en) |
| EP (1) | EP2755775A4 (en) |
| KR (1) | KR20140063681A (en) |
| CN (1) | CN103826759A (en) |
| TW (1) | TW201318922A (en) |
| WO (1) | WO2013040147A2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109530119A (en) * | 2018-11-01 | 2019-03-29 | 河南中南工业有限责任公司 | A kind of adhesive spray equipment and method |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10046351B2 (en) | 2014-07-14 | 2018-08-14 | Graco Minnesota Inc. | Material dispense tracking and control |
| EP3546071B1 (en) * | 2018-03-27 | 2022-01-19 | Robatech AG | Device for intermittently applying a flowable substance and method for applying such a substance |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0115479A1 (en) * | 1983-01-31 | 1984-08-08 | Monsanto Company | Hot melt adhesive delivery system |
| CN1178723A (en) * | 1996-07-16 | 1998-04-15 | 伊利诺斯工具制造公司 | Applicator for thermal smelting adhesive with metering gear driving head |
| EP0993873A2 (en) * | 1998-10-15 | 2000-04-19 | Nordson Corporation | Hot melt delivery system |
| CN1735749A (en) * | 2002-11-19 | 2006-02-15 | 巴西压缩机股份有限公司 | A control system for the movement of a piston |
| US20060144860A1 (en) * | 2005-01-03 | 2006-07-06 | O'keefe Patrick J Jr | Two channel electronic temperature controller |
| CN101506751A (en) * | 2006-08-25 | 2009-08-12 | 堡盟Hhs有限公司 | Hot-glue application system and method for controlling and monitoring the hot-glue application system |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4613062A (en) * | 1984-04-17 | 1986-09-23 | Continental Can Company, Inc. | Hot melt material dispenser |
| DE3624844A1 (en) * | 1986-07-23 | 1988-01-28 | Josef Schucker | TEMPERATURE DEVICE FOR LIQUID ADHESIVES |
| US5814790A (en) * | 1995-10-04 | 1998-09-29 | Nordson Corporation | Apparatus and method for liquifying thermoplastic material |
| EP1135215B1 (en) * | 1998-12-03 | 2003-03-05 | Nordson Corporation | Hot melt material application system with high temperature pressure monitoring and heated recirculating manifolds |
| US7607750B2 (en) * | 2004-09-27 | 2009-10-27 | Seiko Epson Corporation | Pump control mechanism, printer incorporating the same, and pump control method |
| US8272537B2 (en) * | 2008-04-17 | 2012-09-25 | Nordson Corporation | Valveless liquid dispenser |
| KR20150079693A (en) * | 2012-10-25 | 2015-07-08 | 그라코 미네소타 인크. | Power management for hot melt dispensing systems |
-
2012
- 2012-09-13 KR KR1020147006325A patent/KR20140063681A/en not_active Application Discontinuation
- 2012-09-13 EP EP12830923.4A patent/EP2755775A4/en not_active Withdrawn
- 2012-09-13 TW TW101133545A patent/TW201318922A/en unknown
- 2012-09-13 WO PCT/US2012/055048 patent/WO2013040147A2/en active Application Filing
- 2012-09-13 US US14/123,715 patent/US20140193277A1/en not_active Abandoned
- 2012-09-13 CN CN201280044403.5A patent/CN103826759A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0115479A1 (en) * | 1983-01-31 | 1984-08-08 | Monsanto Company | Hot melt adhesive delivery system |
| CN1178723A (en) * | 1996-07-16 | 1998-04-15 | 伊利诺斯工具制造公司 | Applicator for thermal smelting adhesive with metering gear driving head |
| EP0993873A2 (en) * | 1998-10-15 | 2000-04-19 | Nordson Corporation | Hot melt delivery system |
| CN1735749A (en) * | 2002-11-19 | 2006-02-15 | 巴西压缩机股份有限公司 | A control system for the movement of a piston |
| US20060144860A1 (en) * | 2005-01-03 | 2006-07-06 | O'keefe Patrick J Jr | Two channel electronic temperature controller |
| CN101506751A (en) * | 2006-08-25 | 2009-08-12 | 堡盟Hhs有限公司 | Hot-glue application system and method for controlling and monitoring the hot-glue application system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109530119A (en) * | 2018-11-01 | 2019-03-29 | 河南中南工业有限责任公司 | A kind of adhesive spray equipment and method |
Also Published As
| Publication number | Publication date |
|---|---|
| US20140193277A1 (en) | 2014-07-10 |
| EP2755775A2 (en) | 2014-07-23 |
| WO2013040147A2 (en) | 2013-03-21 |
| TW201318922A (en) | 2013-05-16 |
| EP2755775A4 (en) | 2015-04-01 |
| WO2013040147A3 (en) | 2013-05-10 |
| KR20140063681A (en) | 2014-05-27 |
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Application publication date: 20140528 |