CN103894136A - One-step method reaction device for thermoplastic polyurethane - Google Patents
One-step method reaction device for thermoplastic polyurethane Download PDFInfo
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- CN103894136A CN103894136A CN201410122604.3A CN201410122604A CN103894136A CN 103894136 A CN103894136 A CN 103894136A CN 201410122604 A CN201410122604 A CN 201410122604A CN 103894136 A CN103894136 A CN 103894136A
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Abstract
The invention discloses a one-step method reaction device for thermoplastic polyurethane. The one-step method reaction device comprises a material storage tank, a static metering feeding device, a check valve, a reactor, a valve and a buffering device, wherein all the parts are connected by pipelines; the static metering feeding device is composed of a pneumatic ball valve, a plunger piston cylinder body, a plunger piston and a driving device; the buffering device is composed of a buffering device kettle body, a plunger piston and an oil cylinder. The one-step method reaction device for the thermoplastic polyurethane has the beneficial effects that the metering device is accurate in feeding and has strong adaptability on materials with different viscosities; the one-step reaction device for the thermoplastic polyurethane disclosed by the invention can be used in cooperation with a double-screw extruder with a small length-diameter ratio and can also be used in cooperation with a melt pump, so as to realize continuous feeding and granulation one-step method production; the performances of the product meet the requirements; compared with an existing system with a mass flow rate pump dynamic metering system and a double-screw extruder with a large length-diameter ratio, the system used according to the invention has the advantages that the cost is low and the adaptability on the different materials is strong.
Description
Technical field
The present invention relates to thermoplastic polyurethane one-step method reaction unit, belong to TPUE processing technique field.
Background technology
Thermoplastic polyurethane TPU because of its superior performance and environmental protection concept day by day welcomed by the people, product has been contained the scope of commercial Application and civilian necessity, the one-step method production process of current industrial TPU mainly adopts twin-screw continuous production technology.Main flow process is: by polyester (ether) polyalcohol through dehydration or prepolymer, vulcabond, chain extender, " gear pump+mass metrology pump " accurate-metering for Fen San road, and be conveyed into super mixer mix, mixed material enters in the double-screw reactor of 100 DEG C of left and right, under certain screw speed, successive reaction and movement, after different segmentations humidity province reaction a period of time of double-screw reactor, by head extruding pelletization dry packing.
There is following problem in traditional twin-screw continuous production processes: 1, " " system is expensive, not strong to the adaptive capacity of full-bodied prepolymer system for gear pump+mass metrology pump; 2, the time of staying of material in double screw extruder is limited, be generally less than 1 minute, make reaction be difficult to abundant reaction, industrial measure now increases the draw ratio of double screw rod extruder often, general draw ratio reaches 80 left and right, so again the cost of lifting means greatly.
Summary of the invention
The object of the invention is to overcome the shortcoming of above-mentioned process equipment, change three kinds of required component polyalcohols of polyurethane reaction, the metering method of isocyanates and chain extender, changed into the static weighing system of plunger type by the dynamic measuring system of mass flow pump, change the key reaction place of polyurethane, from twin-screw, change in plunger type reactor, provide a kind of and have that delicate metering, high-speed stirred mix, reaction generated time is controlled, the thermoplastic polyurethane one-step method reaction unit of continuous feeding.
Its objective is such realization, thermoplastic polyurethane one-step method reaction unit, comprises storage tank, static weighing feeder, check valve, reactor, valve, buffer, between each several part, connect by pipeline; Described static weighing feeder by pneumatic ball valve, plunger cylinder, plunger and and drive unit form, described drive unit or be oil cylinder or for leading screw, pneumatic ball valve is triple valve, connect respectively check valve, reactor feed mouth and plunger cylinder, plunger is arranged in plunger cylinder, plunger connecting drive device; Described buffer charging aperture is connected with reactor discharging opening by valve, and buffer is made up of buffer kettle, plunger and oil cylinder, and buffer is provided with buffer discharging opening.
Described reactor is made up of line slideway, axle sleeve, guide rail left and right drive unit, motor, Hooks coupling universal coupling, motor fixing plate, rotating seal, paddle, reactor kettle, plunger and oil cylinder, described guide rail left and right drive unit or be oil cylinder or for leading screw; Reactor kettle has charging aperture and discharging opening; Paddle is arranged in reactor kettle, paddle is connected with Hooks coupling universal coupling by connecting rod, between connecting rod and reactor kettle, there is rotating seal sealing, motor and Hooks coupling universal coupling are fixed on motor fixing plate, motor fixing plate is connected with line slideway by axle sleeve, under the effect of motor fixing plate guide rail left and right drive unit, can move left and right along line slideway; Plunger is arranged in reactor kettle, and plunger is connected with oil cylinder.
Storage tank and pipeline all can adopt heating tape to control temperature, and reactor and buffer all adopt ceramic heaters heat, and temperature control all adopts temp controlled meter to carry out temperature control.
Agitator, piston movement all adopt hydraulic jack or servomotor screw mechanism to drive.
Thermoplastic polyurethane one-step method reaction unit of the present invention, can support the use with the double screw extruder of less draw ratio, also can support the use with Melt Pump.
The present invention contrasts prior art and compares and have following good effect: 1, plunger type static weighing system adopts " plunger+tee ball valve " system, control the position of taking out material piston of plunger, can control the precision of metering, pneumatic ball valve is tee ball valve simultaneously, coordinate the on-off action on three-way connection (pipe) road that the material of accurate measurement is pushed to reactor, to the material strong adaptability of different viscosities; 2, the reaction of material is mainly carried out in reactor, twin-screw mainly plays the function of convey materials to pelletizing system, therefore only need the double screw extruder of less draw ratio, generally can select draw ratio is 10 ~ 30 double screw extruder, therefore can, according to the reaction time of the different qualities of material and technological requirement adjustment material, be conducive to control the abundant reaction of material; 3, used dynamic measurement system gear pump+mass flow pump and big L/D ratio double screw extruder system, cost is more expensive, and " the plunger type static weighing system+common double screw extruder " system of employing can reduce the cost of manufacturing machine greatly; 4, the material that reactor produces is extruded by screw extruder by buffer again, can realize continuous feeding extruding pelletization One-step production; 5 devices of the present invention can realization and Melt Pump, support the use granulation through granulating system.
Brief description of the drawings
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is general structure schematic diagram of the present invention.
Fig. 2 is the schematic diagram of plunger type static weighing feeder.
Fig. 3 is the schematic diagram of reactor.
Fig. 4 is the schematic diagram of buffer.
Fig. 5 is that the present invention and double screw extruder support the use general structure schematic diagram.
Fig. 6 is that the present invention and Melt Pump support the use general structure schematic diagram.
In Fig. 1: 1. storage tank, 2. static weighing feeder, 3. check valve, 4. reactor, 5. valve, 6. buffer;
In Fig. 2: 21. pneumatic ball valves, 22. plunger cylinders;
In Fig. 3: 41. oil cylinders, 42. plungers, 43. reactor kettlies, 44. paddles, 45. reactor feed mouths, 46. rotating seals, 47. Hooks coupling universal couplings, 48. motor fixing plates, 49. motors, 410. line slideways, 411. axle sleeves, 412. reactor discharging openings;
In Fig. 4: 61. oil cylinders, 62. plungers, 63. buffer kettlies, 63. buffer charging apertures, 63. buffer dischargings;
In Fig. 5: 7. double screw extruder;
In Fig. 6: 8. Melt Pump.
Detailed description of the invention
Below in conjunction with concrete preferred embodiment, further set forth the present invention.Should be understood that embodiment is only not limited to scope of the present invention for the present invention is described.In addition should be understood that those skilled in the art can make various changes or amendment to the present invention after having read the content of the present invention's instruction, these equivalent form of values fall within the appended claim description of the application limited range equally.
Embodiment
Thermoplastic polyurethane one-step method reaction unit as shown in Figure 1, comprises storage tank (1), static weighing feeder (2), check valve (3), reactor (4), valve (5), buffer (6), between each several part, connects by pipeline; Described static weighing feeder as shown in Figure 2, by pneumatic ball valve (21), plunger cylinder (22), plunger and and drive unit form, described drive unit or be oil cylinder or for leading screw, pneumatic ball valve (21) is triple valve, connect respectively check valve (3), reactor feed mouth (45) and plunger cylinder (22), plunger is arranged in plunger cylinder, plunger connecting drive device; Described buffer charging aperture (64) is connected with reactor discharging opening (412) by valve (5), buffer as shown in Figure 4, be made up of buffer kettle (63), plunger (62) and oil cylinder (61), buffer is provided with buffer discharging opening (65).
Described reactor as shown in Figure 3, formed described guide rail left and right drive unit or be oil cylinder or for leading screw by line slideway (410), axle sleeve (411), guide rail left and right drive unit, motor (49), Hooks coupling universal coupling (47), motor fixing plate (48), rotating seal (46), paddle (44), reactor kettle (43), plunger (42) and oil cylinder (41); Reactor kettle (43) has charging aperture (45) and discharging opening (412); Paddle (44) is arranged in reactor kettle (43), paddle (44) is connected with Hooks coupling universal coupling (47) by connecting rod, between connecting rod and reactor kettle (43), there is rotating seal (46) sealing, motor (49) and Hooks coupling universal coupling (47) are fixed on motor fixing plate (48), motor fixing plate (48) is connected with line slideway (410) by axle sleeve (411), motor fixing plate (48), under the effect of guide rail left and right drive unit, can move left and right along line slideway (410); Plunger (42) is arranged in reactor kettle (43), and plunger (42) is connected with oil cylinder.
The course of work of plunger type static weighing feeder (see figure 2) is as follows: pneumatic ball valve (21) is opened the passage between storage tank and plunger cylinder (22), take out glassware under the effect of oil cylinder or leading screw, by the position of controlling plunger motion, raw material quantitative is sucked and taken out in glassware, then pneumatic ball valve is closed the passage between storage tank, open the passage between reactor, raw material is pushed in reactor.
The course of work of reactor (as Fig. 3) is as follows: plunger (42) retreats, raw material is by reactor feed mouth (45) injecting reactor kettle (43), motor (48) rotates paddle (44) by Hooks coupling universal coupling (46) raw material is carried out to high-speed stirred, meanwhile oil cylinder or leading screw drive paddle to move back and forth, and reach well-beaten effect.After reaction completes, plunger (42) is under the effect of oil cylinder (41), and the polyurethane melt that reaction is completed is pushed in buffer fast by reactor discharging opening (412).
The course of work of buffer (as Fig. 4) is as follows: oil cylinder (61) actuation plunger (62) retreats fast by buffer charging aperture (64) suction and enters in buffer kettle (63), more at the uniform velocity raw material is released by buffer discharging opening (65).
Thermoplastic polyurethane one-step method reaction unit of the present invention, can support the use with the double screw extruder of less draw ratio, and centre is provided with check valve, and as shown in Figure 5, the draw ratio that can select double-screw extruder screw is 10;
Adopt the double screw extruder of thermoplastic polyurethane one-step method reaction unit of the present invention and less draw ratio to support the use, the temperature of setting storage tank is 80 DEG C, the temperature of setting reactor kettle is 160 DEG C, the temperature of setting buffer kettle is 180 DEG C, the temperature of the different sections of design extruder is respectively 160--180 DEG C, the polyester polyol of catalyst and antioxidant will be added with, vulcabond MDI methyl diphenylene diisocyanate and expansion key agent 1, 4-butanediol, add respectively after three storage tanks (1) as shown in Figure 1, by plunger type static weighing feeder (2), raw material is accurately controlled, quantitative raw material is joined in polyurethane reaction device (4) by three charging apertures, through sufficient rapid stirring and reaction, push buffer (6) by reactor, at the uniform velocity enter in common double screw extruder (7) and carry out extruding pelletization by buffer again, finally obtain polyurethane pulverized particles, particle is performance indications excellence after tested, meet follow-up instructions for use.
Thermoplastic polyurethane one-step method reaction unit of the present invention, can also support the use with Melt Pump, and centre is provided with check valve as shown in Figure 6, and the polyurethane pulverized particles that equipment production obtains as shown in Figure 6 after tested meets instructions for use.
Claims (2)
1. thermoplastic polyurethane one-step method reaction unit, is characterized in that: comprise storage tank (1), static weighing feeder (2), check valve (3), reactor (4), valve (5), buffer (6), between each several part, connect by pipeline; Described static weighing feeder by pneumatic ball valve (21), plunger cylinder (22), plunger and and drive unit form, described drive unit or be oil cylinder or for leading screw, pneumatic ball valve (21) is triple valve, connect respectively check valve (3), reactor feed mouth (45) and plunger cylinder (22), plunger is arranged in plunger cylinder, plunger connecting drive device; Described buffer charging aperture (64) is connected with reactor discharging opening (412) by valve (5), and buffer is made up of buffer kettle (63), plunger (62) and oil cylinder (61), and buffer is provided with buffer discharging opening (65).
2. thermoplastic polyurethane one-step method reaction unit according to claim 1, it is characterized in that: described reactor (4) is made up of line slideway (410), axle sleeve (411), guide rail left and right drive unit, motor (49), Hooks coupling universal coupling (47), motor fixing plate (48), rotating seal (46), paddle (44), reactor kettle (43), plunger (42) and oil cylinder (41) described guide rail left and right drive unit or be oil cylinder or for leading screw; Reactor kettle (43) has charging aperture (45) and discharging opening (412); Paddle (44) is arranged in reactor kettle (43), paddle (44) is connected with Hooks coupling universal coupling (47) by connecting rod, between connecting rod and reactor kettle (43), there is rotating seal (46) sealing, motor (49) and Hooks coupling universal coupling (47) are fixed on motor fixing plate (48), motor fixing plate (48) is connected with line slideway (410) by axle sleeve (411), under the effect of motor fixing plate (48) guide rail left and right drive unit, can move left and right along line slideway (410); Plunger (42) is arranged in reactor kettle (43), and plunger (42) is connected with oil cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410122604.3A CN103894136B (en) | 2014-03-29 | 2014-03-29 | One-step method reaction device for thermoplastic polyurethane |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410122604.3A CN103894136B (en) | 2014-03-29 | 2014-03-29 | One-step method reaction device for thermoplastic polyurethane |
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| CN103894136A true CN103894136A (en) | 2014-07-02 |
| CN103894136B CN103894136B (en) | 2015-07-08 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108437260A (en) * | 2018-04-28 | 2018-08-24 | 广州市合诚化学有限公司 | A kind of thermoplastic elastomer (TPE) oil-filled equipment |
| CN111939838A (en) * | 2020-07-17 | 2020-11-17 | 成都天慧分子筛科技有限公司 | Automatic particle balling system |
| CN113090500A (en) * | 2021-04-14 | 2021-07-09 | 杨豪虎 | Material mixing pump |
| CN113289563A (en) * | 2021-05-26 | 2021-08-24 | 浙江金汤塑胶科技股份有限公司 | Thermoplastic polyurethane production device and processing technology |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108437260A (en) * | 2018-04-28 | 2018-08-24 | 广州市合诚化学有限公司 | A kind of thermoplastic elastomer (TPE) oil-filled equipment |
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| CN111939838A (en) * | 2020-07-17 | 2020-11-17 | 成都天慧分子筛科技有限公司 | Automatic particle balling system |
| CN113090500A (en) * | 2021-04-14 | 2021-07-09 | 杨豪虎 | Material mixing pump |
| CN113289563A (en) * | 2021-05-26 | 2021-08-24 | 浙江金汤塑胶科技股份有限公司 | Thermoplastic polyurethane production device and processing technology |
| CN113289563B (en) * | 2021-05-26 | 2022-09-16 | 浙江金汤塑胶科技股份有限公司 | Thermoplastic polyurethane production device and processing technology |
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