CN212472039U

CN212472039U - Adopt TPU production device of novel shale shaker

Info

Publication number: CN212472039U
Application number: CN202021158118.4U
Authority: CN
Inventors: 张玉国; 许海亮; 马剑伟; 张磊
Original assignee: Shandong Kolemay Industry Co ltd
Current assignee: Shandong Kolemay Industry Co ltd
Priority date: 2020-06-19
Filing date: 2020-06-19
Publication date: 2021-02-05
Anticipated expiration: 2030-06-19

Abstract

The utility model belongs to the technical field of polymer new material apparatus for producing, concretely relates to adopt TPU apparatus for producing of novel shale shaker, including a plurality of raw materials storage tanks, mass flow meter, syntropy twin-screw reaction type extruder, pelleter, heat exchanger, hydroextractor, shale shaker and stock chest under water, the shale shaker include the shale shaker case, the shale shaker case passes through vibrating spring and is connected with the fixed frame, installs vibrating motor on the shale shaker case, be equipped with the feed inlet on shale shaker case upper portion apron and a plurality of fan that weathers, the last screen cloth and the lower screen cloth of installation about being equipped with are gone up to the feed inlet lower extreme shale shaker incasement, it just to last screen cloth to weather the fan, the screen cloth is equipped with a plurality of discharge gates to the shale shaker case cooperation upper screen cloth and lower screen cloth. The utility model discloses can make the TPU particle drier to the TPU particle is the dispersion of vibrating more easily, and the screening is more abundant, has improved work efficiency and product quality greatly.

Description

Adopt TPU production device of novel shale shaker

Technical Field

The utility model belongs to the technical field of polymer new material apparatus for producing, concretely relates to adopt TPU apparatus for producing of novel shale shaker.

Background

Thermoplastic polyurethane elastomers (Thermoplastic polyurethanes) are abbreviated to TPUs.

The elastomer is a high molecular material with the glass transition temperature lower than the room temperature, the elongation at break more than 50 percent and better recoverability after the external force is removed. The polyurethane elastomer is a special class of elastomers, has a wide hardness range and a wide performance range, and is a class of high polymer materials between rubber and plastic. It can be plasticized thermally, has no or little cross-linking in chemical structure, and has essentially linear molecules, but some physical cross-linking. Such polyurethane elastomers are known as TPUs.

Thermoplastic polyurethane elastomers (TPU) are predominantly linear polymeric materials produced by the joint reaction of diisocyanates, oligomeric polyols, and chain extenders. It is characterized by repeated carbamate groups in molecular composition, and simultaneously contains allophanate, biuret, ester bonds, ether bonds and other groups; from the viewpoint of molecular structure, it is composed of hard segments obtained by reacting a diisocyanate with a chain extender and soft segments obtained by reacting a diisocyanate with a macropolyol. The special molecular structure enables the TPU to have excellent performances which are incomparable with other various thermoplastic elastomers: high modulus, high strength, high elongation and high elasticity, and excellent wear resistance, oil resistance, low temperature resistance, aging resistance and the like. The tensile strength is as high as 50MPa or above, and the tensile elongation is more than 500%; low temperature resistance of-40 deg.c, high temperature resistance over 120 deg.c, long term compression deformation rate, oil resistance, aliphatic hydrocarbon solvent resistance, oxygen and ozone resistance, etc.

The general flow of the TPU continuous production process is as follows: a raw material storage tank, a three-component filling machine, a co-rotating double-screw reactive extruder, an underwater granulator, a dehydrator, a vibrating screen, a drying tank and a packaging machine. The vibrating screen is used for screening out particles which are irregular in particle size or particle shape and are adhered and do not meet the standard, for example, the target particle size of TPU particles is generally 2.0-5.0mm in diameter, the pore diameters of upper and lower layers of screen plates of the vibrating screen of the double-layer screen plate can be selected to be 5.0mm and 2.0mm, single particles or two or more adhered particles with the particle size being higher than 5.0mm and particles with the particle size being less than 2.0mm are screened out by the vibrating screen. In the existing continuous production process, the hourly output of TPU is generally 200-500 Kg/h and 600-1000 Kg/h according to different specifications and models of extruders.

TPU is a strong polar material, and when the water content of the surfaces of particles is high, the particles are easy to adhere to each other and harden and are difficult to disperse due to heating. In the production process of the TPU, if the particle vibration screening is insufficient, the production efficiency is influenced, the yield of the coarse particles of the side brands is increased, and the yield of good products is reduced; if the TPU product with the requirement on the particle size, such as the popcorn E-TPU, is not screened sufficiently, the particle size and the roundness quality of the product are also influenced, the particle size of the puffed popcorn is not round after foaming, and holes and hollows are generated during compression molding of the popcorn, so that the product is scrapped.

Before underwater granulation in a TPU production line, the temperature of a TPU melt is generally between 150 and 250 ℃, the temperature of granulating water is generally between 5 and 50 ℃, the TPU melt is solidified into particles with the size of rice grains after meeting cold water in a granulating die head, the particles are conveyed to a dehydrator by water, the particles and the water are dehydrated and separated through a section of water particle mixing pipeline and the dehydrator. In order to better ensure easier dispersion of the TPU particles after dehydration, the following measures are generally taken: firstly, adding a lubricating release agent into TPU raw materials or granulating water; secondly, the pipeline of the granulating cooling water is prolonged, and the particles are fully cooled in water; thirdly, the temperature of cooling water is reduced, and the refrigerating capacity of the ice water machine and the area of a heat exchanger are increased; fourthly, the capability of the dehydrator is increased, and the dehydration is more sufficient. The dewatering capacity of the existing dewaterer is that the water content of the TPU after dewatering is generally 2000-5000ppm, and when the air humidity is high, the water content of the TPU is higher; fifthly, the design of a vibrating screen is improved, the particles are further air-dried, and the flowing dispersity of the particles is improved.

At present, the adopted vibrating screen has the following problems:

1. the traditional vibrating screen has an unsatisfactory vibrating effect, and particularly for soft TPU (thermoplastic polyurethane), a product with stronger surface viscosity below Shore hardness of 80A is easy to agglomerate and disperse, so that the particles are difficult to disperse.

2. When TPU particles are vibrated and sorted, if the TPU particles are agglomerated and dispersed poorly, the vibration screening effect is not ideal, so that particles with unqualified particle sizes or adhesion are mixed into a positive plate, or more coarse particles are generated and come out from an upper coarse particle outlet. In order to improve the yield of the finished products of the positive cards, the placed and cooled coarse grains are generally required to be subjected to vibratory screening again, and the working efficiency and the production continuity are greatly influenced.

3. The sieve plate of the traditional vibrating sieve is parallel to the ground, and particles flow forwards slowly in the vibrating selection process, so that the particles are sometimes accumulated.

4. After the TPU is granulated and dehydrated, the water content of TPU particles is generally 2000-5000ppm, and the TPU particles are high in water content and not easy to disperse in a vibration screening process.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: overcome prior art's not enough, provide an adopt TPU apparatus for producing of novel shale shaker, solved the TPU particle through cut the problem that moisture content is high to conglomerate difficult dispersion on the vibration sieve after the grain dehydration, improved work efficiency and product quality greatly.

The utility model discloses an adopt following technical scheme to realize:

the TPU production device adopting the novel vibrating screen comprises a plurality of raw material storage tanks, wherein the raw material storage tanks are respectively connected with inlets of a co-rotating twin-screw reaction type extruder through mass flow meters;

the vibrating screen comprises a vibrating screen box, the vibrating screen box is connected with a fixed frame through a vibrating spring, a vibrating motor is installed on the vibrating screen box, a feed inlet and a plurality of blow-drying fans are arranged on a cover plate on the upper portion of the vibrating screen box, an upper screen mesh and a lower screen mesh which are installed up and down are arranged in the vibrating screen box at the lower end of the feed inlet, the blow-drying fans are right opposite to the upper screen mesh, and the vibrating screen box is matched with the upper screen mesh and the lower screen mesh to be provided with a plurality of discharge ports.

The feeding port end of the upper screen is higher than the discharging port end, and the inclination angle of the feeding port end and the discharging port end and the horizontal plane is 1-10 degrees.

The feeding port end of the lower screen is higher than the discharging port end, and the inclination angle of the lower screen and the horizontal plane is 1-10 degrees.

The upper screen and the lower screen can be detached and separated from the vibrating screen box; the aperture of the screen can be customized according to the particle size requirement of the TPU target product.

The blowing-drying electric wind power is preferably 50-100W, and the air supply surface is larger than the vibrating screen; the fan head is rotatable and liftable so as to face the face of the vibrating screen, preferably at a distance of 20-50cm from the screen.

The dehydrator is connected with the water storage tank, and the water storage tank is connected with the underwater granulator.

The outlet of the storage tank is sequentially connected with the mixed batch drying tank and the automatic packaging machine.

Compared with the prior art, the beneficial effects of the utility model are as follows:

1. the utility model discloses an increase and weather the fan, make the TPU moisture content reduce 1500 and supplementarily become 3000ppm from original 2000 supplementarily use 5000ppm, reduced follow-up dehumidification drying energy consumption, the dehumidification drying energy consumption practices thrift the electric energy about 10%.

2. The utility model discloses make the TPU particle drier to the TPU particle vibrates the dispersion more easily, and the screening is more abundant.

3. The utility model discloses the slope setting of shale shaker face more is favorable to the particle shake to move ahead for the vibration screening speed.

4. Vibrating and screening two layers of sieve plates, wherein the sieve plates can be detached and separated; the aperture of the sieve plate can be customized according to the particle size requirement of a TPU target product.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of the vibrating screen of the present invention;

in the figure: 1. a raw material storage tank; 2. a mass flow meter; 3. a co-rotating twin-screw reactive extruder; 4. an underwater pelletizer; 5. a heat exchanger; 6. a dehydrator; 7. a water storage tank; 8. vibrating screen; 9. a storage tank; 10. a mixed batch drying tank; 11. an automatic packaging machine; 12. a shaker box; 13. a feed inlet; 14. drying the fan; 15. feeding a screen mesh; 16. a lower screen mesh; 17. a discharge port; 18. a vibration spring; 19. fixing the frame; 20. a vibration motor.

Detailed Description

The present invention will be further described with reference to the accompanying drawings.

As shown in fig. 1-2, the TPU production apparatus using the novel vibrating screen includes a plurality of raw material storage tanks 1, the raw material storage tanks 1 are respectively connected with inlets of a co-rotating twin-screw reaction type extruder 3 through mass flow meters 2, an underwater pelletizer 4 is arranged at an outlet of the co-rotating twin-screw reaction type extruder 3, the underwater pelletizer 4 is connected with a dehydrator 6 through a heat exchanger 5, the dehydrator 6 is connected with a vibrating screen 8, and a storage tank 9 is arranged at an outlet of the vibrating screen 8; the dehydrator 6 is connected with the water storage tank 7, and the water storage tank 7 is connected with the underwater granulator 4. The outlet of the storage tank 9 is sequentially connected with a mixed batch drying tank 10 and an automatic packaging machine 11.

Shale shaker 8 include shale shaker case 12, shale shaker case 12 passes through vibrating spring 18 and is connected with fixed frame 19, installs vibrating motor 20 on the shale shaker case 12, be equipped with feed inlet 13 and two on the 12 upper portion apron of shale shaker case and weather fan 14, the last screen cloth 15 and the lower screen cloth 16 of installation about being equipped with in the 13 lower extreme shale shaker case 12 of feed inlet 13, it is just to last screen cloth 15 to weather fan 14, shale shaker case 12 cooperates upper screen cloth 15 and lower screen cloth 16 and is equipped with three discharge gate 17.

The end of the feeding hole 13 of the upper screen 15 is higher than the end of the discharging hole 17, and the inclination angle with the horizontal plane is 1-10 degrees.

The end of the feeding hole 13 of the lower screen 16 is higher than the end of the discharging hole 17, and the inclination angle of the lower screen and the horizontal plane is 1-10 degrees.

The aperture of the upper screen 15 is 5.0mm, the aperture of the lower screen 16 is 2.0mm, the target collects particles with the diameter of 2.0-5.0mm, and the discharged particles with the aperture less than 2.0mm or more than 5.0mm are used as a side plate.

Of course, the above description is only a preferred embodiment of the present invention, and should not be taken as limiting the scope of the embodiments of the present invention. The present invention is not limited to the above examples, and the technical field of the present invention is equivalent to the changes and improvements made in the actual range of the present invention, which should be attributed to the patent coverage of the present invention.

Claims

1. The utility model provides an adopt TPU apparatus for producing of novel shale shaker, includes a plurality of raw materials storage tank (1), its characterized in that: the raw material storage tanks (1) are respectively connected with inlets of the co-rotating twin-screw reaction type extruders (3) through mass flow meters (2), underwater grain cutters (4) are arranged at outlets of the co-rotating twin-screw reaction type extruders (3), the underwater grain cutters (4) are connected with a dehydrator (6) through a heat exchanger (5), the dehydrator (6) is connected with a vibrating screen (8), and a storage tank (9) is arranged at an outlet of the vibrating screen (8);

shale shaker (8) including shale shaker case (12), shale shaker case (12) are connected with fixed frame (19) through vibrating spring (18), install vibrating motor (20) on shale shaker case (12), be equipped with feed inlet (13) and a plurality of fan (14) that weather on shale shaker case (12) upper portion apron, last screen cloth (15) and lower screen cloth (16) of installation about being equipped with in feed inlet (13) lower extreme shale shaker case (12), it is just to last screen cloth (15) to weather fan (14), shale shaker case (12) are cooperateed and are equipped with a plurality of discharge gates (17) screen cloth (15) and lower screen cloth (16).

2. The TPU production plant utilizing the novel shaker of claim 1, further comprising: the end of the feed inlet (13) of the upper screen (15) is higher than the end of the discharge outlet (17), and the inclination angle between the end of the upper screen and the horizontal plane is 1-10 degrees.

3. The TPU production plant utilizing the novel shaker of claim 1, further comprising: the end of the feed inlet (13) of the lower screen (16) is higher than the end of the discharge outlet (17), and the inclination angle between the end of the lower screen and the horizontal plane is 1-10 degrees.

4. The TPU production plant utilizing the novel shaker of claim 1, further comprising: the dehydrator (6) is connected with the water storage tank (7), and the water storage tank (7) is connected with the underwater granulator (4).

5. The TPU production plant utilizing the novel shaker of claim 1, further comprising: the outlet of the storage tank (9) is sequentially connected with the mixed batch drying tank (10) and the automatic packaging machine (11).