CN117732410B - Polyurethane hot melt adhesive production reaction device and method thereof - Google Patents
Polyurethane hot melt adhesive production reaction device and method thereof Download PDFInfo
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- CN117732410B CN117732410B CN202410181920.1A CN202410181920A CN117732410B CN 117732410 B CN117732410 B CN 117732410B CN 202410181920 A CN202410181920 A CN 202410181920A CN 117732410 B CN117732410 B CN 117732410B
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- 238000006243 chemical reaction Methods 0.000 title claims abstract description 80
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 77
- 238000000034 method Methods 0.000 title claims abstract description 42
- 239000004831 Hot glue Substances 0.000 title claims abstract description 40
- 229920002635 polyurethane Polymers 0.000 title claims abstract description 37
- 239000004814 polyurethane Substances 0.000 title claims abstract description 37
- 239000002994 raw material Substances 0.000 claims abstract description 52
- 238000003756 stirring Methods 0.000 claims abstract description 29
- 230000005540 biological transmission Effects 0.000 claims abstract description 26
- 230000008569 process Effects 0.000 claims abstract description 26
- 238000001125 extrusion Methods 0.000 claims abstract description 22
- 230000003647 oxidation Effects 0.000 claims abstract description 6
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 78
- 230000005484 gravity Effects 0.000 claims description 63
- 238000003860 storage Methods 0.000 claims description 62
- 238000007599 discharging Methods 0.000 claims description 35
- 229910052757 nitrogen Inorganic materials 0.000 claims description 31
- 229910001873 dinitrogen Inorganic materials 0.000 claims description 16
- 230000007246 mechanism Effects 0.000 claims description 11
- 238000011049 filling Methods 0.000 claims description 5
- 238000011068 loading method Methods 0.000 claims description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 3
- 210000001503 joint Anatomy 0.000 claims description 3
- 239000001301 oxygen Substances 0.000 claims description 3
- 229910052760 oxygen Inorganic materials 0.000 claims description 3
- 238000002156 mixing Methods 0.000 abstract description 3
- 239000000463 material Substances 0.000 description 14
- 238000005259 measurement Methods 0.000 description 13
- 230000009471 action Effects 0.000 description 4
- 230000001276 controlling effect Effects 0.000 description 4
- 238000013461 design Methods 0.000 description 4
- 238000010030 laminating Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
- 238000010977 unit operation Methods 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/141—Feedstock
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- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
The invention discloses a polyurethane hot melt adhesive production reaction device and a method thereof, and relates to the field of reaction devices. The polyurethane hot melt adhesive production reaction device comprises a production reaction device main body, wherein the production reaction device main body comprises an upper cover arranged above the production reaction device main body, a stirring assembly is arranged in the production reaction device main body, and a feeding unit, an air extrusion unit and a metering transmission unit are arranged on the production reaction device main body. According to the polyurethane hot melt adhesive production reaction device, through the feeding unit, the air extrusion unit and the metering transmission unit, the raw materials entering the production reaction device main body are subjected to air extrusion, the problem of raw material oxidation caused by air mixing in the production reaction device main body in the subsequent feeding process is avoided, and the production quality of the polyurethane hot melt adhesive is improved.
Description
Technical Field
The invention relates to the technical field of reaction devices, in particular to a polyurethane hot melt adhesive production reaction device and a method thereof.
Background
In the production and processing process of the hot melt adhesive, the mixing reaction of the hot melt adhesive materials is usually realized through a reaction kettle so as to realize the processing of the hot melt adhesive, and in the production process of the polyurethane hot melt adhesive, the polyurethane hot melt adhesive materials are heated, mixed and stirred, so that the air is prevented from being oxidized, and the inside of a production reaction device of the polyurethane hot melt adhesive is also required to be isolated from air.
The traditional polyurethane hot melt adhesive production reaction device has the advantages that the internal raw material stirring process is isolated from air by vacuumizing or filling nitrogen into the reaction container, air is extruded, in the operation process, all raw materials are firstly added from a feed inlet of the reaction device in batches in sequence, then the nitrogen is filled or vacuumized for processing, in the actual production process, the condition of the internal raw materials is also required to be observed in real time through an observation window, whether the raw materials need to be further added or not is judged through the color and the physical state of a mixed material, in order to ensure that the polyurethane hot melt adhesive finished product effect is better, the material needs to be fed again through state judgment in the stirring process, the material state is more perfect, in the feeding process, air is easy to enter the reaction device together with the added raw materials, so that the local polyurethane hot melt adhesive is oxidized, and the quality of the polyurethane hot melt adhesive finished product is reduced. Aiming at the defects of the prior art, the invention provides a polyurethane hot melt adhesive production reaction device and a method thereof, so as to solve the problems.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a polyurethane hot melt adhesive production reaction device and a method thereof, wherein raw materials entering the production reaction device main body are subjected to air extrusion through a feeding unit, an air extrusion unit and a metering transmission unit, so that the problem of raw material oxidation caused by air mixed into the production reaction device main body in the subsequent feeding process is avoided, and the production quality of the polyurethane hot melt adhesive is improved; utilize down feed bin, measurement formula storage bin and gravity door mechanism's design, can realize keeping in the raw materials of adding, cooperation measurement drive unit design makes air extrusion unit and feed unit produce the linkage, on the one hand can add through the automatic ration material of measurement drive unit, on the other hand can add the back at the ration material, and automatic drive air extrusion unit operation in the inside row material in-process of measurement formula storage bin not only guarantees that air discharge is effectual, still practices thrift the nitrogen gas quantity, satisfies the user demand.
In order to achieve the above purpose, the invention is realized by the following technical scheme: the utility model provides a polyurethane hot melt adhesive production reaction unit, includes production reaction unit main part, production reaction unit main part is including setting up the upper cover in production reaction unit main part top, the inside of production reaction unit main part is equipped with stirring subassembly, be equipped with in the production reaction unit main part:
The feeding unit is arranged on the side face of the production reaction device main body and comprises a feeding conveying cylinder arranged on the production reaction device main body, a discharging bin is arranged on the feeding conveying cylinder, a metering storage bin is arranged above the discharging bin, and gravity door mechanisms are arranged in the discharging bin and the metering storage bin;
Air extrusion unit, set up in on production reaction unit main part and the feeding unit, the air extrusion unit includes:
The nitrogen filling pipe is arranged on the upper cover;
A nitrogen gas discharge pipe arranged on the upper cover;
A branch pipe arranged on the nitrogen gas charging pipe;
the second nitrogen inlet pipe is arranged on the discharging bin;
The first electromagnetic valve is arranged between the branch pipe and the second nitrogen inlet pipe;
The second nitrogen outlet pipe is arranged on the metering storage bin;
And the metering transmission unit is arranged on the feeding unit and used for controlling the first electromagnetic valve to be in linkage with the gravity gate mechanism.
Preferably, the gravity door mechanism comprises a first gravity door rotatably connected inside the metering storage bin and a second gravity door rotatably connected inside the discharging bin;
the first gravity door is provided with a first positioning shaft and a first balancing weight;
and a second positioning shaft is arranged on the second gravity door.
Preferably, the metering transmission unit comprises a rack which is connected to the side surface of the blanking bin in a sliding way, the second positioning shaft penetrates through the blanking bin and is fixedly connected with a transmission gear, and the transmission gear is meshed with the rack;
The rack is provided with a bearing plate, the bearing plate is provided with a sleeve seat, and a plurality of groups of second balancing weights which are convenient to disassemble and assemble are movably clamped in the sleeve seat;
The second nitrogen outlet pipe is provided with a second electromagnetic valve, the top of the first electromagnetic valve is provided with a push switch, and the bearing plate is used for controlling the switch state of the push switch to the first electromagnetic valve and the second electromagnetic valve.
Preferably, the top fixedly connected with spacing ejector pin of rack, first locating shaft passes measurement formula storage bin and fixedly connected with spacing wheel, the spacing groove that corresponds with spacing ejector pin has been seted up on the spacing wheel.
Preferably, a first limit sleeve is arranged on the discharging bin, and the rack is slidably connected in the first limit sleeve.
Preferably, a second limiting sleeve is arranged on the metering storage bin, and the limiting ejector rod is slidably connected in the second limiting sleeve.
Preferably, a discharging hopper is arranged at the top of the metering storage bin.
Preferably, the stirring assembly comprises a stirring motor arranged on the upper cover, and the output end of the stirring motor is fixedly connected with a stirring rod.
Preferably, the side of the feeding conveying cylinder is fixedly connected with a conveying motor, and the output end of the conveying motor is fixedly connected with a spiral propelling rod.
A method of operating a polyurethane hot melt adhesive production reaction apparatus, the method comprising the steps of:
step S1: the production reaction device main body is in butt joint with the upper cover, nitrogen is introduced through a nitrogen filling pipe, and air is discharged from a nitrogen discharge pipe;
step S2: feeding raw materials of all components by using a feeding unit;
step S3: in the feeding process, air in the metering type stock bin is extruded synchronously through an air extrusion unit;
Step S4: after entering the production reaction device main body, all the component raw materials are stirred and mixed by the stirring assembly, and the raw material adding process and the stirring process are not affected by oxidation of oxygen in the air, so that the quality of the finished product is ensured.
The invention discloses a polyurethane hot melt adhesive production reaction device and a method thereof, which have the following beneficial effects:
1. this polyurethane hot melt adhesive production reaction unit, through the feeding unit that sets up, air extrusion unit and measurement drive unit, carry out the air extrusion to the inside raw materials that gets into production reaction unit main part, avoid follow-up reinforced in-process air to mix into the inside of production reaction unit main part and cause raw and other materials oxidation problem, promote polyurethane hot melt adhesive production quality, utilize the design of lower feed bin, measurement formula storage bin and gravity door mechanism, can realize keeping in the raw materials of adding, cooperation measurement drive unit design makes air extrusion unit and feeding unit produce the linkage, on the one hand can add through the automatic ration material of measurement drive unit, on the other hand can be after quantitative material adds, the operation of automatic drive air extrusion unit in the inside row material in measurement formula storage bin, not only guarantee that the air discharge effect is good, still practice thrift the nitrogen gas quantity, satisfy the user demand.
2. This polyurethane hot melt adhesive production reaction unit, the measurement drive unit's that set up compact structure utilizes loading board, cover seat and multiunit second balancing weight to exert the down force to the rack for rack is to the drive gear force, and cooperate the transmission of second location axle to make second gravity door and the inside unloading position laminating of lower feed bin, when the inside raw materials quality of entering measurement formula storage bin is less than the temporary storage threshold value of setting, the second gravity door can not be opened, consequently, the suspension of raw materials has been realized, thereby avoid the inside of air entering lower feed bin, in quantitative charging process, the air extrusion unit also can not function in the inner chamber of feed bin and measurement formula storage bin, reduce the waste of nitrogen gas.
3. This polyurethane hot melt adhesive production reaction unit, when rack atress upward movement, the rack drives spacing ejector pin upward movement in step for spacing ejector pin joint is in the inside of spacing groove, thereby forms the rotation spacing to spacing wheel, therefore first gravity door position is in closing locking state, and the unloading is not, and be in closed state, avoid two sets of gravity doors to open simultaneously and lead to the phenomenon that the air got into, if first gravity door is in the unloading open state, spacing ejector pin is laminating spacing wheel surface this moment, reminds personnel metering formula stock bin inside raw materials to reach temporary storage threshold value.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a cross-sectional view of the present invention;
FIG. 3 is a schematic view of a second nitrogen outlet pipe according to the present invention;
FIG. 4 is a schematic view of the structure of a second nitrogen inlet pipe according to the present invention;
FIG. 5 is a schematic view of the structure of the gravity door of the present invention;
FIG. 6 is a schematic view of a limiting sleeve according to the present invention;
FIG. 7 is a schematic view of the internal structures of the discharging bin and the metering type storage bin of the invention;
FIG. 8 is a schematic view of an exploded drive of the gravity door of the present invention;
FIG. 9 is a schematic view of a first gravity door according to the present invention;
FIG. 10 is a schematic structural view of a second gravity door according to the present invention;
FIG. 11 is a schematic illustration of a second exemplary embodiment of a clamping assembly;
fig. 12 is a schematic diagram illustrating the disassembly of the second counterweight of the invention.
In the figure: 1. producing a reaction device main body; 2. an upper cover; 201. a stirring motor; 202. a stirring rod; 3. a feed transfer drum; 301. a conveying motor; 302. a screw propulsion rod; 4. discharging the material bin; 401. a first limit sleeve; 5. metering type storage bin; 501. the second limit sleeve; 6. discharging a hopper; 7. a nitrogen gas charging pipe; 701. a nitrogen gas discharge pipe; 702. a branch pipe; 703. a first electromagnetic valve; 7031. a push switch; 704. a second nitrogen inlet pipe; 705. a second nitrogen outlet pipe; 706. a second electromagnetic valve; 8. a first gravitational gate; 801. a first positioning shaft; 802. a first balancing weight; 803. a limiting wheel; 8031. a limit groove; 9. a second gravitational gate; 901. a second positioning shaft; 902. a transmission gear; 903. a rack; 904. a carrying plate; 905. a sleeve seat; 906. a second balancing weight; 907. and limiting the ejector rod.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention are clearly and completely described, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The embodiment of the application solves the problems that in the feeding process of the traditional polyurethane hot melt adhesive production reaction device, air is easy to enter the reaction device along with the added raw materials, so that the local polyurethane hot melt adhesive is oxidized, and the quality of a polyurethane hot melt adhesive finished product is reduced.
In order to better understand the above technical solutions, the following detailed description will refer to the accompanying drawings and specific embodiments.
The embodiment of the invention discloses a polyurethane hot melt adhesive production reaction device, which is shown in figures 1-12 and comprises a production reaction device main body 1, wherein the production reaction device main body 1 comprises an upper cover 2 arranged above the production reaction device main body 1, a stirring assembly is arranged in the production reaction device main body 1, and the production reaction device main body 1 is provided with:
The feeding unit is arranged on the side surface of the production reaction device main body 1 and comprises a feeding conveying cylinder 3 arranged on the production reaction device main body 1, a discharging bin 4 is arranged on the feeding conveying cylinder 3, a metering storage bin 5 is arranged above the discharging bin 4, and gravity door mechanisms are arranged in the discharging bin 4 and the metering storage bin 5;
An air extrusion unit provided on the production reaction device main body 1 and the feeding unit, the air extrusion unit including:
A nitrogen gas charging pipe 7 provided on the upper cover 2;
A nitrogen gas discharge pipe 701 provided on the upper cover 2;
a branch pipe 702 provided on the nitrogen gas charging pipe 7;
a second nitrogen inlet pipe 704 arranged on the lower bin 4;
A first electromagnetic valve 703 disposed between the branch pipe 702 and the second nitrogen inlet pipe 704;
a second nitrogen outlet pipe 705, which is arranged on the metering storage bin 5;
and the metering transmission unit is arranged on the feeding unit and used for controlling the first electromagnetic valve 703 to be in linkage with the gravity gate mechanism.
Specifically, the gravity door mechanism comprises a first gravity door 8 rotatably connected inside the metering storage bin 5 and a second gravity door 9 rotatably connected inside the discharging bin 4;
The first gravity door 8 is provided with a first positioning shaft 801 and a first balancing weight 802;
a second positioning shaft 901 is arranged on the second gravity door 9;
The first balancing weight 802 applies pressure to the first gravity door 8, so that when the first gravity door 8 does not discharge, the first gravity door 8 is driven to keep a fit and sealing state with the discharging position of the metering storage bin 5.
Further, the metering transmission unit comprises a rack 903 which is slidably connected to the side surface of the discharging bin 4, a second positioning shaft 901 penetrates through the discharging bin 4 and is fixedly connected with a transmission gear 902, and the transmission gear 902 is meshed with the rack 903;
the rack 903 is provided with a bearing plate 904, the bearing plate 904 is provided with a sleeve seat 905, and a plurality of groups of second balancing weights 906 which are convenient to disassemble and assemble are movably clamped in the sleeve seat 905;
the second nitrogen outlet pipe 705 is provided with a second electromagnetic valve 706, the top of the first electromagnetic valve 703 is provided with a push switch 7031, and the bearing plate 904 is used for controlling the switch state of the push switch 7031 to the first electromagnetic valve 703 and the second electromagnetic valve 706;
The metering transmission unit is compact in structure, the bearing plate 904, the sleeve seat 905 and the plurality of groups of second balancing weights 906 are utilized to apply downward pressure to the racks 903, so that the racks 903 apply force to the transmission gears 902, and the second positioning shafts 901 are matched for transmission to enable the second gravity door 9 to be attached to the blanking position inside the blanking bin 4, when the mass of raw materials entering the inside of the metering storage bin 5 is smaller than a set temporary storage threshold value, the second gravity door 9 is not opened, so that temporary storage of the raw materials is realized, air is prevented from entering the inside of the blanking bin 4, and in the quantitative feeding process, the air extrusion unit is not operated in the inner cavities of the blanking bin 4 and the metering storage bin 5, and waste of nitrogen is reduced;
When the mass of the raw materials entering the metering storage bin 5 is larger than a set temporary storage threshold value, the second gravity door 9 is opened, and meanwhile, the second positioning shaft 901 drives the transmission gear 902 to rotate, the transmission gear 902 drives the rack 903 to slide upwards, and the rack 903 drives the bearing plate 904, the sleeve seat 905 and the second balancing weight 906 to move;
When the bearing plate 904 moves and is separated from the pressing type switch 7031 to press, the first electromagnetic valve 703 and the second electromagnetic valve 706 are in an open state, so that nitrogen is introduced into the interiors of the discharging bin 4 and the metering type storage bin 5 and air is discharged in the discharging process, and the automatic discharge of the air in the metering type storage bin 5 is realized;
the temporary storage threshold is adjusted by the number of the second balancing weights 906, the temporary storage threshold represents the temporary storage capacity of the metering storage bin 5 for raw materials, the raw materials can be quantified through the temporary storage capacity, so that raw materials can be conveniently and quantitatively added, when the number of the second balancing weights 906 is larger, the temporary storage threshold is higher, namely the mass of the raw materials which can be stored in the metering storage bin 5 is larger, and conversely.
Further, a limiting ejector rod 907 is fixedly connected to the top of the rack 903, the first positioning shaft 801 passes through the metering storage bin 5 and is fixedly connected with a limiting wheel 803, and a limiting groove 8031 corresponding to the limiting ejector rod 907 is formed in the limiting wheel 803.
When rack 903 is forced to move upwards, rack 903 drives spacing ejector pin 907 simultaneously and moves upwards for spacing ejector pin 907 joint is in the inside of spacing groove 8031, thereby form the rotation spacing to spacing round 803, consequently, first gravity door 8 position is in the closed locking state, do not blow down, and be in the closed state, avoid two sets of gravity doors to open simultaneously and lead to the phenomenon of air entering, if first gravity door 8 is in the unloading open state, spacing ejector pin 907 is laminating spacing round 803 surface at this moment, remind personnel metering storage silo 5 inside raw materials abundant, spacing ejector pin 907 and rack 903 position lock simultaneously and spacing to second gravity door 9, consequently, stop the unloading and push down loading board 904 makes first gravity door 8 reset, and then loading board 904 makes second gravity door 9 atress unloading.
The device can also manually lift the bearing plate 904 upwards and perform manual blanking, and the internal raw materials of the metering storage bin 5 are blanked into the blanking bin 4.
Be equipped with first stop collar 401 on the lower feed bin 4, rack 903 sliding connection is in first stop collar 401, and the first stop collar 401 that sets up realizes spacing to rack 903, guarantees that the atress of rack 903 is stable.
The second limiting sleeve 501 is arranged on the metering storage bin 5, the limiting ejector rod 907 is slidably connected in the second limiting sleeve 501, and the arranged second limiting sleeve 501 is used for providing supporting and limiting for the limiting ejector rod 907 and guaranteeing the stability of the stress of the limiting ejector rod 907.
Specifically disclosed, a discharging hopper 6 is arranged at the top of the metering storage bin 5, and the discharging hopper 6 is convenient for discharging raw materials in the metering storage bin 5.
Specifically, the stirring subassembly is including setting up the stirring motor 201 on upper cover 2, and stirring motor 201 output fixedly connected with puddler 202, and the stirring subassembly overall structure of setting is compact, easy to maintain, makes puddler 202 stir the raw materials through stirring motor 201 drive puddler 202 rotation.
Further, a conveying motor 301 is fixedly connected to the side face of the feeding conveying cylinder 3, an output end of the conveying motor 301 is fixedly connected with a spiral propelling rod 302, the conveying motor 301 drives the spiral propelling rod 302 to rotate, raw materials in the discharging bin 4 enter the feeding conveying cylinder 3 during discharging, and the raw materials enter the inner cavity of the production reaction device body 1 through the rotation pushing of the spiral propelling rod 302.
The operation method of the polyurethane hot melt adhesive production reaction device comprises the following steps:
Step S1: the production reaction device main body 1 and the upper cover 2 are in butt joint, nitrogen is introduced through the nitrogen gas filling pipe 7, and air is discharged from the nitrogen gas discharge pipe 701;
step S2: feeding raw materials of all components by using a feeding unit;
Step S3: in the feeding process, air in the metering storage bin 5 is synchronously extruded through an air extrusion unit;
Step S4: after entering the production reaction device main body 1, all the component raw materials are stirred and mixed by the stirring assembly, and the raw material adding process and the stirring process are not affected by oxidation of oxygen in the air, so that the quality of the finished product is ensured.
When raw materials are fed by the feeding unit, the raw materials enter the metering storage bin 5 through the discharging hopper 6, and thrust is applied to the first gravity door 8, so that the first gravity door 8 is stressed to turn over, and the raw materials enter the inner cavity of the metering storage bin 5;
Because the second gravity door 9 is limited by the second positioning shaft 901 and the transmission gear 902, the second gravity door 9 carries and temporarily stores raw materials, under the action of the gravity of the rack 903, the carrying plate 904, the sleeve seat 905 and the plurality of groups of second balancing weights 906, the rack 903 applies force to the transmission gear 902, so that the second positioning shaft 901 and the second gravity door 9 are kept under stress, and the second gravity door 9 is kept in a closed state;
The number of the second balancing weights 906 arranged in the device is large, and the rack 903 is stressed by a large force, so that the bearing capacity of the second gravity door 9 is stronger, the raw materials are primarily metered, the temporary storage quantity of the raw materials in the metering type storage bin 5 is regulated by the number of the second balancing weights 906, and the discharging quantitative control of the raw materials of each component is conveniently controlled;
When the thrust exerted by the raw materials on the second gravity door 9 in the metering storage bin 5 exceeds the gravity traction force of the racks 903, the bearing plate 904, the sleeve seat 905 and the plurality of groups of second balancing weights 906, the raw materials push the second gravity door 9 to be in an open state and perform blanking, so that the raw materials enter the feeding conveying cylinder 3, and when the conveying motor 301 works, the spiral pushing rod 302 is driven to rotate, and the spiral pushing rod 302 is used for pushing the raw materials to enter the inner cavity of the production reaction device main body 1 for heating, mixing and stirring;
In the process of opening the second gravity door 9, the second gravity door 9 drives the second positioning shaft 901 to rotate, the second positioning shaft 901 drives the transmission gear 902 to rotate, the transmission gear 902 drives the rack 903 to slide upwards, and the rack 903 drives the bearing plate 904, the sleeve seat 905 and the second balancing weight 906 to move;
When the bearing plate 904 moves and is separated from the pressing type switch 7031 to press, the first electromagnetic valve 703 and the second electromagnetic valve 706 are in an open state, so that nitrogen of the nitrogen charging pipe 7 enters the inside of the first electromagnetic valve 703 and the second nitrogen charging pipe 704 through the branch pipe 702 and is discharged from the second nitrogen outlet pipe 705 through the discharging bin 4 and the metering storage bin 5, and the internal air of the discharging bin 4 and the metering storage bin 5 is discharged in the process of opening and discharging the internal second gravity door 9 of the metering storage bin 5, so that the air in the discharging process is ensured not to enter the inside of the production reaction device main body 1 along with raw materials;
When the rack 903 is forced to move upwards, the rack 903 synchronously drives the limiting ejector rod 907 to move upwards, so that the limiting ejector rod 907 is clamped in the limiting groove 8031, the limiting wheel 803 is rotated and limited, the first gravity door 8 is in a closed and locked state and cannot drop materials, if the first gravity door 8 is in a blanking open state, the limiting ejector rod 907 is attached to the surface of the limiting wheel 803, a sufficient amount of raw materials in the personnel metering storage bin 5 is reminded, meanwhile, the positions of the limiting ejector rod 907 and the rack 903 are locked and limit the second gravity door 9, blanking is stopped, the bearing plate 904 is pressed down, the first gravity door 8 is reset, and the hand-loosening bearing plate 904 enables the second gravity door 9 to be subjected to blanking.
The device can also manually lift the bearing plate 904 upwards and perform manual blanking, and the internal raw materials of the metering storage bin 5 are blanked into the blanking bin 4.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The foregoing has shown and described the basic principles and main features of the present invention and the advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. The utility model provides a polyurethane hot melt adhesive production reaction unit, includes production reaction unit main part (1), production reaction unit main part (1) is including setting up upper cover (2) in production reaction unit main part (1) top, the inside of production reaction unit main part (1) is equipped with stirring subassembly, its characterized in that, be equipped with on production reaction unit main part (1):
The feeding unit is arranged on the side face of the production reaction device main body (1) and comprises a feeding conveying cylinder (3) arranged on the production reaction device main body (1), a discharging bin (4) is arranged on the feeding conveying cylinder (3), a metering storage bin (5) is arranged above the discharging bin (4), and gravity door mechanisms are arranged in the discharging bin (4) and the metering storage bin (5);
an air extrusion unit provided on the production reaction device main body (1) and the feeding unit, the air extrusion unit comprising:
A nitrogen gas charging pipe (7) arranged on the upper cover (2);
a nitrogen gas discharge pipe (701) provided on the upper cover (2);
A branch pipe (702) provided to the nitrogen gas charging pipe (7);
the second nitrogen inlet pipe (704) is arranged on the discharging bin (4);
a first electromagnetic valve (703) provided between the branch pipe (702) and a second nitrogen inlet pipe (704);
a second nitrogen outlet pipe (705) arranged on the metering storage bin (5);
the metering transmission unit is arranged on the feeding unit and used for controlling the first electromagnetic valve (703) to be in linkage with the gravity gate mechanism;
The gravity door mechanism comprises a first gravity door (8) rotatably connected inside the metering storage bin (5) and a second gravity door (9) rotatably connected inside the discharging bin (4);
A first positioning shaft (801) and a first balancing weight (802) are arranged on the first gravity door (8); a second positioning shaft (901) is arranged on the second gravity door (9);
the metering transmission unit comprises a rack (903) which is connected to the side surface of the lower bin (4) in a sliding manner, the second positioning shaft (901) penetrates through the lower bin (4) and is fixedly connected with a transmission gear (902), and the transmission gear (902) is meshed with the rack (903);
A bearing plate (904) is arranged on the rack (903), a sleeve seat (905) is arranged on the bearing plate (904), and a plurality of groups of second balancing weights (906) which are convenient to disassemble and assemble are movably clamped in the sleeve seat (905);
The second nitrogen gas exit tube (705) is last to be equipped with second solenoid valve (706), the top of first solenoid valve (703) is equipped with push type switch (7031), loading board (904) are used for controlling push type switch (7031) to the on-off state of first solenoid valve (703) and second solenoid valve (706).
2. The polyurethane hot melt adhesive production reaction device according to claim 1, wherein a limiting ejector rod (907) is fixedly connected to the top of the rack (903), the first positioning shaft (801) penetrates through the metering storage bin (5) and is fixedly connected with a limiting wheel (803), and a limiting groove (8031) corresponding to the limiting ejector rod (907) is formed in the limiting wheel (803).
3. The polyurethane hot melt adhesive production reaction device according to claim 2, wherein a first limit sleeve (401) is arranged on the lower bin (4), and the rack (903) is slidably connected in the first limit sleeve (401).
4. A polyurethane hot melt adhesive production reaction device according to claim 3, characterized in that the metering storage bin (5) is provided with a second limit sleeve (501), and the limit ejector rod (907) is slidably connected in the second limit sleeve (501).
5. A polyurethane hot melt adhesive production reaction apparatus according to claim 3, characterized in that the top of the metering storage bin (5) is provided with a blanking hopper (6).
6. The polyurethane hot melt adhesive production reaction device according to claim 1, wherein the stirring assembly comprises a stirring motor (201) arranged on the upper cover (2), and the output end of the stirring motor (201) is fixedly connected with a stirring rod (202).
7. The polyurethane hot melt adhesive production reaction device according to claim 1, wherein a conveying motor (301) is fixedly connected to the side surface of the feeding conveying cylinder (3), and a spiral pushing rod (302) is fixedly connected to the output end of the conveying motor (301).
8. A method of operating a polyurethane hot melt adhesive production reaction apparatus according to any one of claims 1 to 7, comprising the steps of:
Step S1: the production reaction device main body (1) is in butt joint with the upper cover (2), nitrogen is introduced through the nitrogen filling pipe (7), and air is discharged from the nitrogen discharge pipe (701);
step S2: feeding raw materials of all components by using a feeding unit;
step S3: in the feeding process, air in the metering storage bin (5) is extruded synchronously through an air extrusion unit;
Step S4: after entering the production reaction device main body (1), all the component raw materials are stirred and mixed by the stirring assembly, and the raw material adding process and the stirring process are not affected by oxidation of oxygen in the air, so that the quality of the finished product is ensured.
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| CN202410181920.1A CN117732410B (en) | 2024-02-19 | 2024-02-19 | Polyurethane hot melt adhesive production reaction device and method thereof |
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| CN202410181920.1A CN117732410B (en) | 2024-02-19 | 2024-02-19 | Polyurethane hot melt adhesive production reaction device and method thereof |
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| CN117732410B true CN117732410B (en) | 2024-04-30 |
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| CN211104818U (en) * | 2019-08-23 | 2020-07-28 | 长沙爱达环保科技有限公司 | High-precision powder metering system for mixing station |
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| CN117732410A (en) | 2024-03-22 |
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