CN212097423U - Drainage device for double-screw extruder - Google Patents

Abstract

The utility model discloses a drainage device for on double screw extruder uses at double screw extruder's technical field, and its technical scheme main points are: the double-screw extruder comprises a drainage mechanism connected to the side wall of an extrusion barrel of a double-screw extruder and a support frame for supporting the drainage mechanism, wherein the drainage mechanism comprises a front material barrel and a barrel body communicated with the front material barrel; has the technical effects that: the water drainage channel is provided for liquid water generated in the extrusion molding process of the high polymer elastomer raw material, dynamic plugging of the high polymer elastomer melt is realized, water is removed on the premise of not damaging the movement direction and continuity of the high polymer elastomer melt, and energy loss caused by drying and dehydration is reduced.

Description

Drainage device for double-screw extruder

Technical Field

The utility model relates to a double screw extruder's technical field, in particular to a drainage device for on double screw extruder.

Background

At present, in the production process of a high polymer elastomer (including synthetic rubber and natural rubber), a high polymer elastomer raw material (water is mixed in the raw material) needs to be fed into a double-screw extruder for extrusion molding, the water content in the high polymer elastomer extruded in the extruder is high, and a dryer needs to be used for drying the extruded high polymer elastomer, so that the water content in the high polymer elastomer is evaporated until the water content in the high polymer elastomer reaches the production requirement. However, the method of drying by the dryer to achieve the purpose of dehydration consumes more power and energy, and requires higher cost.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a drainage device for on double screw extruder, its advantage: provide drainage channel for the liquid water that polymer elastomer raw materials extrusion molding in-process produced to reach the purpose of dehydrating to polymer elastomer, to the loss of electric energy when having reduced the drying-machine stoving dehydration, be favorable to practicing thrift manufacturing cost.

The above technical purpose of the present invention can be achieved by the following technical solutions: the utility model provides a drainage device for on double screw extruder, is including connecting drainage mechanism on the lateral wall of the section of thick bamboo of extruding of double screw extruder and the support frame that is used for supporting drainage mechanism, drainage mechanism includes preceding feed cylinder and the barrel that is linked together with preceding feed cylinder, be equipped with the twin-screw in preceding feed cylinder and the barrel, install on the support frame and be used for driving twin-screw pivoted motor and reducing gear box, the one end that the barrel was kept away from to preceding feed cylinder is linked together with the section of thick bamboo of extruding of double screw extruder, in the twin-screw stretches into the section of thick bamboo of extruding in the preceding feed cylinder, one side intercommunication on barrel towards ground has the.

Through above-mentioned technical scheme, the during operation, the operator starts the twin-screw extruder and stirs the extrusion molding to the polymer elastomer raw materials, and meanwhile, operator starter motor and speed reducer drive twin-screw are rotatory, and the twin-screw will extrude in the section of thick bamboo from the polymer elastomer raw materials orientation that the section of thick bamboo lateral wall was extruded of extruding to carry out the shutoff to the polymer elastomer raw materials. At this time, the water in the polymer elastomer raw material flows into the front charging barrel through the side wall of the extrusion barrel, flows into the barrel body and flows out through the drain pipe. By the arrangement, water in the high-molecular elastomer raw material can be dehydrated in the process of extruding the high-molecular elastomer raw material, and the extruded high-molecular elastomer does not need to be dried and dehydrated independently, so that the step of drying and dehydrating is omitted, the electric energy consumption caused by the work of a dryer is also saved, and the effects of saving energy and reducing the production cost are favorably achieved; meanwhile, the dehydration is simultaneously carried out along with the extrusion molding processing of the high polymer elastomer, so that the continuity of the dehydration work is realized, and the processing efficiency is favorably improved.

The utility model discloses further set up to: the outer side of the cylinder is communicated with an exhaust pipe for discharging water vapor in the cylinder, and the exhaust pipe and the drain pipe are kept through in the vertical direction.

Through above-mentioned technical scheme, the steam that produces in-process that stirs the extrusion molding to the polymer elastomer raw materials enters into preceding feed cylinder and barrel from the extrusion cylinder in to discharge through the blast pipe. The setting of blast pipe, the timely discharge in the steam is followed the extrusion cylinder of being convenient for, has reduced steam and has been difficult to discharge and exist in the polymer elastomer raw materials, leads to the possibility that appears the bubble in the polymer elastomer product of extruding, has guaranteed the quality of the polymer elastomer product of extruding.

The utility model discloses further set up to: the filter screen is arranged at the pipe orifice of the drain pipe on the barrel body, and the drain pipe and the filter screen are detachably connected to the barrel body.

Through above-mentioned technical scheme, the setting of filter screen has played to be squeezed out the polymer elastomer raw materials in the barrel from extruding the barrel and has blockked and the filtering action for water in the barrel passes through the filter screen and discharges from the drain pipe, and polymer elastomer raw materials are blocked by the filter screen and are caught and are extruded to extruding in the barrel by the twin-screw stirring extrusion molding in preceding feed cylinder and the barrel. The arrangement of the filter screen reduces the possibility that the crushed aggregates in the macromolecular elastomer raw material in the cylinder body leak out through the drain pipe.

The utility model discloses further set up to: the utility model discloses a filter screen, including the barrel, the barrel is provided with logical groove, the notch area that leads to the groove is greater than the orificial area of drain pipe, the drain pipe has the installation piece that is used for sealing logical groove towards the one end of barrel along outer peripheral edges rigid coupling, the installation piece parcel is in the outside of barrel and through screw threaded connection in the outside of barrel, the filter screen is pressed from both sides tightly between the outer wall of installation piece and barrel.

Through above-mentioned technical scheme, when the filter screen is blockked up through long-term use hole mesh, the operator unscrews the screw from the installation piece, then the operator takes off the installation piece from the lateral wall of barrel to take off the filter screen from between installation piece and the barrel and clear up or change, then install the installation piece again on the lateral wall of barrel. The mode of being connected can be dismantled in the adoption between drain pipe and filter screen and the barrel, and the operator of being convenient for clears up or changes the filter screen when the filter screen is blockked up, has guaranteed the filter effect of filter screen, has reduced the filter screen and has blockked up the possibility that leads to water difficult to discharge, and easy operation is convenient.

The utility model discloses further set up to: the installation piece is equipped with a plurality of inserted bars towards one side rigid coupling of barrel, and is a plurality of the inserted bar is worn to establish the filter screen and is made the filter screen tensioning strut, the inserting groove corresponding with the inserted bar has been seted up in the outside of barrel, the inserted bar is pegged graft in the inserting groove.

Through above-mentioned technical scheme, during the installation, the operator wears to establish the filter screen with a plurality of spliced poles simultaneously for the filter screen is fixed to be strutted, then corresponds the spliced pole and pegs graft in the inserting groove. Due to the arrangement of the insertion rod, the possibility of dislocation of the filter screen between the cylinder body and the mounting block is reduced, and the filter screen is limited.

The utility model discloses further set up to: the exhaust pipe is far away from one end threaded connection of barrel and is had the cartridge filter, the cartridge filter is linked together with the exhaust pipe, the cartridge filter intussuseption is filled with the active carbon filter pulp.

Through the technical scheme, the activated carbon filter cotton adopts aluminum honeycombs, plastic honeycombs and paper honeycombs with through hole structures as carriers. Compared with the traditional activated carbon filter screen, the activated carbon filter screen has better water vapor dynamic performance, large specific surface area and high adsorption efficiency. The vapor in the cylinder body is filtered by the activated carbon filter cotton in the filter cylinder before being discharged through the exhaust pipe, so that the peculiar smell and harmful substances of the macromolecular elastomer raw material contained in the vapor are adsorbed and filtered by the activated carbon filter cotton, the possibility of air pollution caused by direct discharge of the vapor to the air is reduced, and the requirement of environmental protection is met. Meanwhile, the mode of detachable connection is adopted between the filter cartridge and the exhaust pipe, so that an operator can regularly screw the filter cartridge off from the exhaust pipe to replace the activated carbon filter cotton, and the filtering effect on water vapor is ensured.

The utility model discloses further set up to: a safety cover is sleeved outside a rotating shaft of the motor between the motor and the reduction gearbox, and the safety cover is installed on the supporting frame.

Through above-mentioned technical scheme, the setting of safety cover for the axis of rotation of motor is surrounded, has reduced in the course of the work, and when the axis of rotation of motor rotated at a high speed, the operator touched the axis of rotation carelessly or had the foreign matter to bump into the axis of rotation and be bounced off, and lead to the possibility that the potential safety hazard takes place, has guaranteed operational environment's security.

The utility model discloses further set up to: the universal wheel is installed to the one end that the motor was kept away from to the support frame.

Through above-mentioned technical scheme, the setting of universal wheel, the operator of being convenient for removes the support frame that has motor and reducing gear box to the support in the installation, is favorable to using manpower sparingly.

To sum up, the utility model discloses following beneficial effect has:

1. the dynamic plugging of the high molecular elastomer melt is realized while the high molecular elastomer raw material is extruded, and continuous dehydration is performed on the premise of not damaging the movement direction of the high molecular elastomer melt, so that the processing efficiency is improved, and the energy-saving effect is also achieved;

2. the filter screen and the barrel are detachably connected, so that an operator can replace the filter screen at the drain pipe conveniently, and the normal performance of the filtering effect of the filter screen is guaranteed.

Drawings

FIG. 1 is a schematic view of a structure for embodying a twin-screw extruder and a water discharge mechanism.

Fig. 2 is a schematic diagram for showing the entire structure of the drainage mechanism in embodiment 1.

Fig. 3 is a schematic configuration diagram for showing the positional relationship between the rotary shaft and the safety cover in embodiment 1.

Fig. 4 is a schematic view for showing the entire structure of the drainage mechanism in embodiment 2.

Fig. 5 is a schematic view showing a connection structure of the filter cartridge and the exhaust pipe and the drain pipe and the cartridge in embodiment 2.

Fig. 6 is an enlarged view of a portion a in fig. 5.

Reference numerals: 1. a twin screw extruder; 2. an extrusion cylinder; 3. a drainage mechanism; 4. a feeding hopper; 7. a support frame; 8. a front barrel; 9. a barrel; 10. double screw; 11. a motor; 12. a reduction gearbox; 13. a drain pipe; 14. an exhaust pipe; 15. a filter screen; 16. a through groove; 17. mounting blocks; 18. a screw; 19. a plug rod; 20. inserting grooves; 21. a filter cartridge; 22. activated carbon filter cotton; 23. a rotating shaft; 24. a safety shield; 25. a universal wheel.

Detailed Description

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

Example 1: a drainage device for a double-screw extruder, referring to fig. 1, comprises a drainage mechanism 3 connected to the side wall of an extrusion barrel 2 of the double-screw extruder 1 and a support frame 7 for supporting the drainage mechanism 3, wherein a universal wheel 25 is installed at one end of the support frame 7 far away from a motor 11. Be equipped with feeding hopper 4 on the twin-screw extruder 1, during operation, the operator pours the polymer elastomer raw materials (mixed with water in the raw materials) into feeding hopper 4 in, and when actually processing, mainly carry out the extrusion molding processing to synthetic rubber or natural rubber, polymer elastomer raw materials carries out the extrusion molding processing through feeding hopper entering into in extruding cylinder 2.

Referring to fig. 1 and 2, in the present embodiment, two sets of water discharge mechanisms 3 are provided on the side wall of the extrusion cylinder 2 of the twin-screw extruder 1 in the length direction. The drainage mechanism 3 comprises a front charging barrel 8 and a barrel body 9 communicated with the front charging barrel 8, and one end of the front charging barrel 8 far away from the barrel body 9 is communicated with the extruding barrel 2 of the double-screw extruder 1. A group of double screws 10 are arranged in the front charging barrel 8 and the barrel body 9, a motor 11 and a reduction gearbox 12 for driving the double screws 10 to rotate are arranged on the supporting frame 7, and one end, far away from the motor 11, of the double screws 10 extends into the extrusion barrel 2.

Referring to fig. 1 and 2, a drain pipe 13 is connected to the side of the cylinder 9 facing the ground, and when the raw material of the polymer elastomer is extruded in the extrusion cylinder 2, part of the water in the melt of the polymer elastomer in a molten or semi-molten state is extruded, and at this time, the water flows into the front cylinder 8 and flows into the cylinder 9 to be discharged through the drain pipe 13. Set up like this, the water that the polymer elastomer fuse-element produced in extrusion molding process of being convenient for can in time discharge through drain pipe 13, has reduced moisture content and has leaded to the moisture content of the polymer elastomer product of extruding more and cause the possibility of influence to the quality of product when being difficult to follow and extrude section of thick bamboo 2 in the discharge.

Referring to fig. 2, an exhaust pipe 14 for discharging water vapor in the barrel 9 is connected to the outside of the barrel 9, the exhaust pipe 14 and the drain pipe 13 are vertically penetrated, and water vapor generated in the process of extruding the elastomer raw material in the extrusion barrel 2 (fig. 1) enters the front barrel 8 and the barrel 9 and is discharged through the exhaust pipe 14.

Referring to fig. 2, during extrusion molding, an operator starts a motor 11 and a reduction gearbox 12 to drive a twin-screw 10 to rotate so as to perform extrusion molding on the polymer elastomer melt entering the front charging barrel 8 and the barrel 9, and finally extrudes and pushes the polymer elastomer raw material into the extrusion barrel 2 again to realize dynamic plugging of the polymer elastomer raw material. A safety cover 24 is sleeved outside a rotating shaft 23 (figure 3) of the motor 11 between the motor 11 and the reduction box 12, and the safety cover 24 is installed on the support frame 7. The arrangement of the safety cover 24 enables the rotating shaft 23 of the motor 11 to be shielded, so that the possibility that potential safety hazards are easily caused due to the fact that the rotating shaft 23 rotates at a high speed when the motor 11 works, and an operator accidentally touches the rotating shaft 23 or a foreign object collides with the rotating shaft 23 and is bounced off is reduced.

The working process is as follows: when the extruder works, an operator adds the high-molecular elastomer raw material into the feeding hopper 4, then the operator starts the double-screw extruder 1, the motor 11 and the reduction gearbox 12, and the high-molecular elastomer raw material is extruded into a molten or semi-molten state in the extrusion barrel 2. The extruded high molecular elastomer melt enters the extrusion cylinder 2 to be extruded, and water vapor generated in the extrusion process enter the front cylinder 8 and the cylinder 9 from the extrusion cylinder 2 and are discharged through a drain pipe 13 and an exhaust pipe 14 respectively. Meanwhile, the twin-screw 10 carries out extrusion molding on the polymer elastomer melt entering the front charging barrel 8 and the barrel body 9, the polymer elastomer melt is extruded into the extrusion barrel 2 again, dynamic plugging on the polymer elastomer melt is realized, and finally the polymer elastomer processed by extrusion molding is extruded from the discharge end of the extrusion barrel 2.

Example 2: referring to fig. 4 and 5, a drainage device for a twin-screw extruder is different from embodiment 1 in that a filter cartridge 21 is connected to one end of an exhaust pipe 14 far from a cylinder 9 in a threaded manner, the filter cartridge 21 is communicated with the exhaust pipe 14, an activated carbon filter cotton 22 is filled in the filter cartridge 21, and the inside of the activated carbon filter cotton 22 is of a porous structure and has good adsorption performance on harmful substances in water vapor. The steam that the process that the polymer elastomer raw materials is extruded in extrusion cylinder 2 (fig. 1) produced is discharged through blast pipe 14, through the filtration of active carbon filter pulp 22 in cartridge filter 21 before the steam is discharged for peculiar smell and harmful substance in the steam discharge in the air after being filtered by active carbon filter pulp 22 absorption, have reduced the pollution to the air. The arrangement of the exhaust pipe 14 is beneficial to timely discharging the water vapor in the extrusion cylinder 2 in the extrusion molding process, and the possibility that the water vapor is difficult to discharge and enters the high polymer elastomer product to influence the product quality is reduced.

Referring to fig. 5 and 6, a filter screen 15 is disposed on the cylinder 9 at the nozzle of the drain pipe 13, and the diameter of the holes of the filter screen 15 is smaller than that of the raw material of the high molecular elastomer. A through groove 16 is formed in the barrel 9, the area of a groove opening of the through groove 16 is larger than that of a pipe opening of the drain pipe 13, and an installation block 17 used for sealing the through groove 16 is bonded to one end, facing the barrel 9, of the drain pipe 13 along the outer peripheral edge. A plurality of plug-in connection rods 19 are bonded on one side of the mounting block 17 facing the cylinder 9, and plug-in connection grooves 20 corresponding to the plug-in connection rods 19 are formed on the outer side of the cylinder 9. During installation, an operator penetrates through one filter screen 15 with a plurality of insertion rods 19 simultaneously, so that the filter screen 15 is stretched and straightened among the plurality of insertion rods 19, and then the insertion rods 19 are correspondingly inserted into the insertion grooves 20 on the outer side of the cylinder 9. Next, the operator screws the mounting block 17 to the outside of the cylinder 9 by the screws 18, so that the filter screen 15 is clamped between the mounting block 17 and the cylinder 9.

Referring to fig. 5 and 6, when part of the polymer elastomer melt and water enter the front barrel 8 (fig. 4) and the barrel 9, the water passes through the filter screen 15 and is discharged from the drain pipe 13, and the polymer elastomer melt is filtered by the filter screen 15 and intercepted in the barrel 9, so that the possibility of the polymer elastomer melt leaking out through the drain pipe 13 is reduced. When the mesh of the filter screen 15 is clogged with the crushed particles in the polymer elastomer melt, the operator unscrews the screw 18 from the mounting block 17 and the cylinder 9, and removes the drain pipe 13 together with the mounting block 17 and the filter screen 15 from the cylinder 9. The operator then removes the filter screen 15 from the mounting block 17 for cleaning or replacement, and then reinstalls the mounting block 17 and filter screen 15 to the outside of the bowl 9. By the arrangement, an operator can clean or replace the filter screen 15 when the filter screen 15 is blocked, and the possibility that water is difficult to discharge from the barrel 9 due to the fact that the filter screen 15 is blocked is reduced.

Working principle; the water vapor generated in the extrusion molding process is filtered by the activated carbon filter cotton 22 in the filter cylinder 21 before being discharged and then discharged into the air, so that the pollution to the air is reduced.

Meanwhile, by additionally arranging the filter screen 16, the polymer elastomer raw material is blocked by the filter screen 16 while the level generated in the extrusion molding process is discharged through the filter screen 16 and the drain pipe 13, so that the possibility that the polymer elastomer raw material leaks through the drain pipe 13 is reduced.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.

Claims (8)

1. A drainage device for a double-screw extruder is characterized in that: including connecting drainage mechanism (3) on the lateral wall of the extrusion section of thick bamboo (2) of twin-screw extruder (1) and being used for supporting support frame (7) of drainage mechanism (3), drainage mechanism (3) are including preceding feed cylinder (8) and with barrel (9) that preceding feed cylinder (8) are linked together, be equipped with twin-screw (10) in preceding feed cylinder (8) and barrel (9), install on support frame (7) and be used for driving twin-screw (10) pivoted motor (11) and reducing gear box (12), the one end that barrel (9) were kept away from to preceding feed cylinder (8) is linked together with the extrusion section of thick bamboo (2) of twin-screw extruder (1), twin-screw (10) in preceding feed cylinder (8) stretch into extrusion section of thick bamboo (2), one side intercommunication that barrel (9) were towards ground has drain pipe (13).

2. The water discharge device for twin-screw extruder as claimed in claim 1, wherein: an exhaust pipe (14) for discharging water vapor in the cylinder (9) is communicated with the outer side of the cylinder (9), and the exhaust pipe (14) and the drain pipe (13) are kept through in the vertical direction.

3. The water discharge device for twin-screw extruder as claimed in claim 1, wherein: a filter screen (15) is arranged at the pipe orifice of the drain pipe (13) on the barrel body (9), and the drain pipe (13) and the filter screen (15) are detachably connected to the barrel body (9).

4. The water discharge device for twin-screw extruder as claimed in claim 3, wherein: logical groove (16) have been seted up on barrel (9), the notch area that leads to groove (16) is greater than the orificial area of drain pipe (13), drain pipe (13) have along outer peripheral edges rigid coupling to be used for sealing the installation piece (17) that lead to groove (16) towards the one end of barrel (9), installation piece (17) parcel is in the outside of barrel (9) and through screw (18) threaded connection in the outside of barrel (9), filter screen (15) are pressed from both sides tightly between the outer wall of installation piece (17) and barrel (9).

5. The water discharge apparatus for use on a twin-screw extruder as defined in claim 4, wherein: the installation piece (17) are equipped with a plurality of spliced poles (19) towards one side rigid coupling of barrel (9), and are a plurality of spliced pole (19) wear to establish filter screen (15) and make filter screen (15) tensioning strut, spliced groove (20) corresponding with spliced pole (19) are seted up in the outside of barrel (9), spliced pole (19) are pegged graft in spliced groove (20).

6. The water discharge device for twin-screw extruder as claimed in claim 2, wherein: one end of the exhaust pipe (14) far away from the cylinder body (9) is in threaded connection with a filter cylinder (21), the filter cylinder (21) is communicated with the exhaust pipe (14), and activated carbon filter cotton (22) is filled in the filter cylinder (21).

7. The water discharge device for twin-screw extruder as claimed in claim 1, wherein: a safety cover (24) is sleeved outside a rotating shaft (23) of the motor (11) between the motor (11) and the reduction gearbox (12), and the safety cover (24) is installed on the support frame (7).

8. The water discharge device for twin-screw extruder as claimed in claim 1, wherein: and one end of the support frame (7) far away from the motor (11) is provided with a universal wheel (25).

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