CN210733219U - Counter-rotating parallel double-screw extruder capable of improving extrusion yield - Google Patents

Abstract

The utility model discloses a counter-rotating parallel double-screw extruder capable of improving extrusion yield, which comprises a frame, wherein a reduction gearbox, a coupler and a first motor are arranged inside the frame, an output shaft of the first motor is fixedly connected with an input shaft of the reduction gearbox through the coupler, a feeding machine is arranged on the upper surface of the frame, a feed inlet of the feeding machine is communicated with a vertical stirring hopper, and a discharge outlet of the feeding machine is communicated with a forced feeding mechanism; the material is poured into the vertical stirring hopper, enters the feeding machine through the vertical stirring hopper, is guided into the machine barrel through the forced feeding mechanism, the first motor is started, the effect of large torque is realized through the coupler and the reduction gearbox, the extrusion screw is driven to rotate, the material is extruded, the double-tank shutdown-free cleaning vacuum mechanism is matched with the converging core, and the effects of improving the output of the extruder and prolonging the service life of the extrusion screw of the machine barrel are achieved.

Description

Counter-rotating parallel double-screw extruder capable of improving extrusion yield

Technical Field

The utility model belongs to the technical field of floor processing machinery, concretely relates to can improve parallel double screw extruder of incorgruous of extrusion output.

Background

Both the LVT plastic floor and the SPC floor are one of PVC floors. The main raw materials are polyvinyl chloride, wood powder, calcium powder and the like. The PVC floor is light, thin, wear-resistant, good in elasticity, fireproof, flame-retardant, water-absorbing, moisture-proof, sound-absorbing and noise-preventing, and is particularly simple, convenient and pollution-free in installation. The development of PVC floor is short for several years, and the PVC floor is developed from a single hard floor manufactured by using a marble-imitated effect to a floor manufactured by using various soft and hard walls, a wood-proof floor, a foaming light floor, an environment-friendly methane-free plastic wood grain floor and the like. Has been generally accepted in large and medium cities at home and abroad, and has wide application.

The process of floor production can be summarized as follows: the raw materials are sheared and meshed by a screw in a cylinder of an extruder under the conditions of high temperature and vacuum negative pressure to form paste (called as plasticization), the paste is shaped and extruded into a sheet shape by a die, the sheet is molded by a calender under the condition of hot state, a layer of film which needs to imitate marble or wood grains is coated on the surface of the sheet, and the linen grain (grains are coated on a lower roller) for sticking glue is pressed on the back of the sheet to be used as a base material. And performing wear-resistant protection treatment on the surface of the UV paint coating production line. And then the substrate is subjected to the sectional slotting treatment by a slotting machine, and finally the finished product is packed.

Therefore, the working efficiency, the service life and the plastification condition of the materials in the machine barrel of the extruder directly determine the quality and the yield of the product. Most of the existing extruders in the market are 92/188 counter-rotating conical twin-screw extruders and 110/220 counter-rotating conical twin-screw extruders, or 115 counter-rotating parallel twin-screw extruders, 130 counter-rotating parallel twin-screw extruders and 135 counter-rotating parallel twin-screw extruders.

The cone twin or flat twin extruder has limited output, the maximum screw center distance of the 135 counter-rotating parallel twin-screw extruder is 110mm, the length-diameter ratio of a machine barrel is 28:1, and the output is 40 tons/day. The remaining yield is smaller. Because the raw materials contain a large amount of calcium powder (calcium carbonate), the hardness of the raw materials is high, a barrel screw is easy to wear, and the raw materials are usually replaced within 3-6 months, so that the cost is too high. Medium and small floor enterprises cannot afford to pay at all. Most of the existing machine barrels are cooled by an external fan, the cooling effect is general, if the machine barrels cannot be cooled in time, the temperature inside the machine barrels is ultrahigh, and the materials are scorched. At this moment, the machine barrel screw needs to be stopped, disassembled and cleaned, and time and labor are wasted. Meanwhile, the power of the main driving motor of the extruder is 132KW, the power is low, the torque is low, the locking of the machine barrel screw rod can be caused under the condition of more feeding, the reduction gearbox is damaged, and the service life of the machine barrel screw rod is shortened.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a can improve the parallel twin-screw extruder of incorgruous of extrusion output to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a counter-rotating parallel double-screw extruder capable of improving extrusion yield comprises a rack, wherein a reduction gearbox, a coupler and a first motor are mounted inside the rack, an output shaft of the first motor is fixedly connected with an input shaft of the reduction gearbox through the coupler, a feeding machine is mounted on the upper surface of the rack, a feed inlet of the feeding machine is communicated with a vertical stirring hopper, a discharge outlet of the feeding machine is communicated with a forced feeding mechanism, a machine barrel is mounted inside the rack and below the forced feeding mechanism and is communicated with a discharge outlet of the forced feeding mechanism, a machine barrel electric rear supporting mechanism and a machine barrel front supporting mechanism are mounted on two sides of the bottom of the outer side wall of the machine barrel respectively, an extrusion screw is mounted inside the machine barrel, a double-tank non-stop cleaning vacuum mechanism is mounted below the machine barrel and is mounted on the bottom wall of the inside of the rack, the machine barrel is communicated with the double-tank shutdown-free cleaning vacuum mechanism, and one end of the machine barrel, which is far away from the forced feeding mechanism, is communicated with a confluence core.

Preferably: the feeding machine is any one of a double-screw feeding machine and a single-screw feeding machine.

Preferably: perpendicular stirring hopper includes hopper, second motor, pivot and stirring paddle leaf, the second motor pass through flange mounting in the upper surface center department of hopper, the output shaft of second motor runs through the hopper, the output shaft of second motor with pivot fixed connection, stirring paddle leaf evenly install in the lateral wall of pivot, the bottom of hopper with the feed inlet intercommunication of feeding machine.

Preferably: the forced feeding mechanism comprises a cylinder, a vertical screw, a worm, a turbine and a third motor, wherein the outer side wall of the cylinder is communicated with a discharge hole of the feeding machine, the third motor is arranged at the top of the outer side wall of the cylinder, an output shaft of the third motor penetrates through the cylinder and is fixedly connected with the turbine, the top end of the worm is rotatably connected with the cylinder through a bearing, the bottom end of the worm is fixedly connected with the vertical screw, and the outer side wall of the worm is meshed and connected with the turbine.

Preferably: the outer side wall of the machine barrel is uniformly provided with a first cooling water tank.

Preferably: the extrusion screw comprises a mandrel and a thread element, and the thread element is uniformly sleeved on the outer side wall of the mandrel.

Preferably: the double-tank shutdown-free cleaning vacuum mechanism comprises a vacuum pump and a vacuum filtering tank, wherein the vacuum filtering tank is provided with two vacuum tanks, and the output end of the vacuum pump is communicated with the vacuum filtering tank through a pipe body and a valve respectively.

Preferably: a flow channel is formed in the confluence core, and a second cooling water tank is formed in one side of the confluence core.

Preferably: the length-diameter ratio of the cylinder is 30-35: 1.

the utility model discloses a technological effect and advantage: the utility model provides a can improve parallel twin-screw extruder of incorgruous of extrusion output compares with prior art, has following advantage:

the material is poured into the vertical stirring hopper, enters the feeding machine through the vertical stirring hopper, is guided into the machine barrel through the forced feeding mechanism, the first motor is started, the effect of large torque is realized through the coupler and the reduction gearbox, the extrusion screw is driven to rotate, the material is extruded, the double-tank shutdown-free cleaning vacuum mechanism is matched with the converging core, and the effects of improving the output of the extruder and prolonging the service life of the extrusion screw of the machine barrel are achieved.

Drawings

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

FIG. 2 is a schematic view of the frame structure of the present invention;

FIG. 3 is a diagram of the connection mode of the reduction box, the coupling and the first motor of the present invention;

FIG. 4 is a schematic view of the feeding machine of the present invention;

FIG. 5 is a schematic view of the vertical stirring hopper of the present invention, wherein the arrow direction is the direction of the material;

FIG. 6 is a schematic structural view of the forced feeding mechanism of the present invention, wherein the arrow direction is the direction of the material;

FIG. 7 is a view of the connection mode between the barrel electric rear support mechanism and the barrel front support mechanism of the present invention and the barrel, and the arrow direction is the disassembly direction;

fig. 8 is a top view of fig. 7 of the present invention, with the direction of the arrow being the disassembly direction;

FIG. 9 is a schematic view of the extrusion screw structure of the present invention;

FIG. 10 is a schematic structural view of a double-tank shutdown-free vacuum cleaning mechanism of the present invention;

FIG. 11 is a schematic view of the structure of the confluence core of the present invention;

fig. 12 is a left side view of the present invention.

In the figure: 1. a frame; 2. a reduction gearbox; 3. a coupling; 4. a first motor; 5. a feeder; 501. a double screw feeder; 502. a single screw feeder; 6. a vertical stirring hopper; 601. a hopper; 602. a second motor; 603. a rotating shaft; 604. a stirring paddle; 7. a forced feeding mechanism; 701. a barrel; 702. a vertical screw; 703. a worm; 704. a turbine; 705. a third motor; 8. a barrel electric rear support mechanism; 9. a barrel; 91. a first cooling water tank; 10. extruding a screw; 1001. a mandrel; 1002. a threaded element; 11. the double-tank shutdown-free vacuum cleaning mechanism; 1101. a vacuum pump; 1102. a vacuum filtration tank; 12. a barrel front support mechanism; 13. a confluence core; 1301. a flow channel; 1302. a second cooling water tank.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. The specific embodiments described herein are merely illustrative of the invention and are not intended to be limiting of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The utility model provides a counter-rotating parallel twin-screw extruder capable of improving extrusion yield, as shown in figures 1-12, which comprises a frame 1, wherein a reduction gearbox 2, a coupler 3 and a first motor 4 are arranged inside the frame 1, an output shaft of the first motor 4 is fixedly connected with an input shaft of the reduction gearbox 2 through the coupler 3, a feeder 5 is arranged on the upper surface of the frame 1, a feed inlet of the feeder 5 is communicated with a vertical stirring hopper 6, a discharge outlet of the feeder 5 is communicated with a forced feeding mechanism 7, a cylinder 9 is arranged inside the frame 1 and below the forced feeding mechanism 7, the cylinder 9 is communicated with a discharge outlet of the forced feeding mechanism 7, an electric rear support mechanism 8 and a cylinder front support mechanism 12 are respectively arranged on two sides of the bottom of the outer side wall of the cylinder 9, an extrusion screw 10 is arranged inside the cylinder 9, a double-tank halt-free cleaning vacuum mechanism 11 is arranged below the machine barrel 9, the double-tank halt-free cleaning vacuum mechanism 11 is installed on the inner bottom wall of the machine frame 1, the machine barrel 9 is communicated with the double-tank halt-free cleaning vacuum mechanism 11, and one end, far away from the forced feeding mechanism 7, of the machine barrel 9 is communicated with a confluence core 13.

Preferably: the feeder 5 is any one of a double-screw feeder 501 and a single-screw feeder 502; the model of the double-screw feeder 501 is 800 type spherical double screws, the model of the single-screw feeder 502 is 160 type single-screw feeders, by adopting 800 type spherical double-screw feeding, the speed ratio of the feeding motor is 9, the feeding amount reaches 90 tons/day under the condition of full load, the single-screw feeder is suitable for raw materials of fine powder or new materials mixed by a mixer, or the single-screw feeder is replaced by 160 type single-screw feeders, the power of the single-screw feeding motor is 3KW, the speed ratio is 20, the screw diameter is 160mm, the lead is 125mm, the full load output is 60 tons/day, the single-screw feeder is mainly suitable for crushed materials or returned materials after the waste floor is crushed, the double-screw feeder has the advantages that the grinding process of the crushed materials is omitted while the materials are not blocked, the processes are reduced, the equipment is saved, the manpower is saved, the cost is greatly saved, the large output is ensured, different feeders 5 can be selected according to, when the production raw material is large-particle crushed material, a 160 single-screw feeder is used.

Preferably: the vertical stirring hopper 6 comprises a hopper 601, a second motor 602, a rotating shaft 603 and stirring blades 604, wherein the second motor 602 is mounted at the center of the upper surface of the hopper 601 through a flange, an output shaft of the second motor 602 penetrates through the hopper 601, the output shaft of the second motor 602 is fixedly connected with the rotating shaft 603, the stirring blades 604 are uniformly mounted on the outer side wall of the rotating shaft 603, and the bottom of the hopper 601 is communicated with a feeding hole of the feeder 5; through installing second motor 602 on the lid of hopper 601, second motor 602 is flange formula gear motor, and the model is 5IK90GU-CF, and the raw materials is incessantly stirred by stirring paddle 604, prevents that the raw materials from agglomerating, the wall built-up, bridging influences the unloading.

Preferably: the forced feeding mechanism 7 comprises a cylinder 701, a vertical screw 702, a worm 703, a turbine 704 and a third motor 705, wherein the outer side wall of the cylinder 701 is communicated with a discharge hole of the feeder 5, the third motor 705 is installed at the top of the outer side wall of the cylinder 701, an output shaft of the third motor 705 penetrates through the cylinder 701 and is fixedly connected with the turbine 704, the top end of the worm 703 is rotatably connected with the cylinder 701 through a bearing, the bottom end of the worm 703 is fixedly connected with the vertical screw 702, and the outer side wall of the worm 703 is meshed with the turbine 704; as the machine barrel 9 is normally fed naturally in the market, the self weight of raw materials and the occlusion of double screws are relied on, in order to improve the yield, the forced feeding mechanism 7 is added, a downward thrust is added above the blanking port of the machine barrel 9, the feeding efficiency of the machine barrel 9 is improved, and the yield is improved.

Preferably: the outer side wall of the machine barrel 9 is uniformly provided with first cooling water grooves 91; the winding machine is used for winding the copper pipe, cooling water is introduced, and the temperature of the machine barrel 9 is reduced.

Preferably: the extrusion screw 10 comprises a mandrel 1001 and a threaded element 1002, and the threaded element 1002 is uniformly sleeved on the outer side wall of the mandrel 1001; because the existing screws on the market are integrally processed, the use cost is high, the depth of screw grooves is small, the material consumption is limited, the yield is low, through the arrangement, different threaded elements 1002 are threaded outside the extrusion screw 10 through a common mandrel 1001, each threaded element 1002 is a lead, so that the threaded element 1002 is replaced in any section which is easy to wear, the use and maintenance cost can be greatly reduced, meanwhile, under the condition that the center distance between the two screws is 110mm, the diameter of each screw can reach phi 136-phi 138mm, the material consumption of the spiral grooves is more, the yield can reach 60 tons/day, and the yield is improved.

Preferably: the double-tank shutdown-free cleaning vacuum mechanism 11 comprises a vacuum pump 1101 and vacuum filter tanks 1102, the number of the vacuum filter tanks 1102 is two, and the output ends of the vacuum pump 1101 are respectively communicated with the two vacuum filter tanks 1102 through pipe bodies and valves; because during normal production, negative pressure needs to be formed in the cylinder 9, in the process of pumping pressure by the vacuum pump 1101, raw materials which are not completely plasticized are pumped out of the cylinder 9 and enter the vacuum pump 1101, and the blades of the vacuum pump 1101 are easily blocked after a long time, so that the vacuum filter tank 1102 is added before the vacuum pump 1101, and the structure of the double tanks can be switched when one tank is full, so that the non-stop cleaning is realized, the service life of equipment is prolonged, the maintenance cost of the equipment is reduced, and the model of the vacuum pump 1101 is 2 BV-5121.

Preferably: a flow passage 1301 is formed inside the merging core 13, and a second cooling water tank 1302 is formed on one side of the merging core 13; because the confluence core 13 on the existing market is not cooled, once the foundation speed is high, the yield is promoted to cause the over-high temperature in the confluence core 13 to be out of control, the paste is caused, the machine needs to be stopped for cleaning, through the arrangement, cooling water is introduced to the confluence core 13, the temperature control can be realized, the flow channel 1301 with large caliber can increase the discharge amount in unit time, and the service time of the equipment is prolonged while the yield is improved.

Preferably: the length-diameter ratio of the cylinder 9 is 30-35: 1; make the time of material in barrel 9 and walking distance extension, make it fully plastify, the performance of goods is better, takes the barrel 9 of first cooling trough 91 simultaneously, uses the cooling mode that water-cooling and air-cooling combined together, and the paste is prevented to more effectual accuse temperature, reduces clearance number of times, extension live time.

In this embodiment: because the existing equipment needs to move the machine barrel screw out of the reduction gearbox 2 and move to the outside to conveniently draw out the extrusion screw 10 when replacing the machine barrel screw, the action structure is manual, time and labor are wasted, the parallel double-screw extruder adopts the machine barrel electric rear support mechanism 8 to match with the machine barrel front support mechanism 12, the machine barrel electric rear support mechanism 8 adopts an SWLD2.5T type worm gear elevator and is matched with a 0.37KW speed reducer to improve the efficiency of replacing the extrusion screw 10 in the machine barrel 9, the automation degree of the equipment is improved from a more humanized angle by considering the operation of workers, the machine barrel front support mechanism 12 consists of a hand wheel fixing plate and a threaded rod, the hand wheel drives the threaded rod to rotate on the fixing plate, the threaded rod props against the machine barrel 9 to support the machine barrel 9, when disassembling, the hand wheel of the machine barrel front support mechanism 12 is firstly rotated to move the whole machine barrel 9 forwards and then move the machine barrel 9 downwards, finally, the extrusion screw 10 is removed in the direction of the arrows in fig. 7 and 8.

In this embodiment: the first motor 4 is a 160KW energy-saving motor, the reduction gearbox 2 is a horizontal integrated high-torque reduction gearbox, and the coupling 3 is a plum blossom elastic coupling, so that the effect of large torque is realized.

The working principle is as follows: firstly, materials are poured into a vertical stirring hopper 6, the materials enter a feeding machine 5 through the vertical stirring hopper 6, then the materials are guided into a machine barrel 9 through a forced feeding mechanism 7, a first motor 4 is started, the effect of large torque is realized through a coupler 3 and a reduction gearbox 2, an extrusion screw rod 10 is driven to rotate, the materials are extruded, and the double-tank shutdown-free cleaning vacuum mechanism 11 and the confluence core 13 are matched to achieve the effects of improving the output of the extruding machine and prolonging the service life of the extrusion screw rod 10 of the machine barrel 9.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims (9)

1. A counter-rotating parallel twin-screw extruder capable of improving extrusion yield comprises a frame (1), and is characterized in that: the automatic feeding device is characterized in that a reduction gearbox (2), a coupler (3) and a first motor (4) are installed inside the rack (1), an output shaft of the first motor (4) is fixedly connected with an input shaft of the reduction gearbox (2) through the coupler (3), a feeder (5) is installed on the upper surface of the rack (1), a feed inlet of the feeder (5) is communicated with a vertical stirring hopper (6), a discharge outlet of the feeder (5) is communicated with a forced feeding mechanism (7), a machine barrel (9) is installed below the forced feeding mechanism (7) inside the rack (1), the machine barrel (9) is communicated with a discharge outlet of the forced feeding mechanism (7), a machine barrel electric rear supporting mechanism (8) and a machine barrel front supporting mechanism (12) are installed on two sides of the bottom of the outer side wall of the machine barrel (9) respectively, an extrusion screw (10) is installed inside the machine barrel (9), the machine is characterized in that a double-tank halt-free cleaning vacuum mechanism (11) is arranged below the machine barrel (9), the double-tank halt-free cleaning vacuum mechanism (11) is installed on the inner bottom wall of the machine frame (1), the machine barrel (9) is communicated with the double-tank halt-free cleaning vacuum mechanism (11), and the machine barrel (9) is far away from one end of the forced feeding mechanism (7) and is communicated with a confluence core (13).

2. A counter-rotating parallel twin screw extruder capable of increasing extrusion throughput as claimed in claim 1, wherein: the feeder (5) is any one of a double-screw feeder (501) and a single-screw feeder (502).

3. A counter-rotating parallel twin screw extruder capable of increasing extrusion throughput as claimed in claim 1, wherein: perpendicular stirring hopper (6) include hopper (601), second motor (602), pivot (603) and stirring paddle leaf (604), second motor (602) through flange mounting in the upper surface center department of hopper (601), the output shaft of second motor (602) runs through hopper (601), the output shaft of second motor (602) with pivot (603) fixed connection, stirring paddle leaf (604) evenly install in the lateral wall of pivot (603), the bottom of hopper (601) with the feed inlet intercommunication of feeder (5).

4. A counter-rotating parallel twin screw extruder capable of increasing extrusion throughput as claimed in claim 1, wherein: the forced feeding mechanism (7) comprises a cylinder body (701), a vertical screw (702), a worm (703), a turbine (704) and a third motor (705), wherein the outer side wall of the cylinder body (701) is communicated with a discharge hole of the feeding machine (5), the third motor (705) is installed at the top of the outer side wall of the cylinder body (701), an output shaft of the third motor (705) penetrates through the cylinder body (701) and is fixedly connected with the turbine (704), the top end of the worm (703) is rotatably connected with the cylinder body (701) through a bearing, the bottom end of the worm (703) is fixedly connected with the vertical screw (702), and the outer side wall of the worm (703) is meshed with the turbine (704).

5. A counter-rotating parallel twin screw extruder capable of increasing extrusion throughput as claimed in claim 1, wherein: the outer side wall of the machine barrel (9) is uniformly provided with a first cooling water tank (91).

6. A counter-rotating parallel twin screw extruder capable of increasing extrusion throughput as claimed in claim 1, wherein: the extrusion screw (10) comprises a mandrel (1001) and a threaded element (1002), wherein the threaded element (1002) is uniformly sleeved on the outer side wall of the mandrel (1001).

7. A counter-rotating parallel twin screw extruder capable of increasing extrusion throughput as claimed in claim 1, wherein: the double-tank shutdown-free cleaning vacuum mechanism (11) comprises a vacuum pump (1101) and a vacuum filtering tank (1102), the vacuum filtering tank (1102) is provided with two, and the output end of the vacuum pump (1101) is respectively communicated with the vacuum filtering tank (1102) through a pipe body and a valve.

8. A counter-rotating parallel twin screw extruder capable of increasing extrusion throughput as claimed in claim 1, wherein: a flow channel (1301) is formed in the confluence core (13), and a second cooling water tank (1302) is formed in one side of the confluence core (13).

9. A counter-rotating parallel twin screw extruder capable of increasing extrusion throughput as claimed in claim 1, wherein: the length-diameter ratio of the cylinder (9) is 30-35: 1.

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