CN219806442U - Discharging mechanism of extruder - Google Patents

Abstract

The utility model relates to an extruder blanking mechanism which comprises a charging barrel and a hopper of an extruder, wherein a cooling water tank is arranged on the outer top of the charging barrel, a sleeve is communicated with the position of the outer top corresponding to a charging hole of the charging barrel, a lower flange is arranged on the outer side of the top of the sleeve, a cavity is formed in the side wall of the sleeve in a hollow mode, a coil pipe is wound in the cavity, the two ends of the top and the bottom of the coil pipe extend out of the sleeve, the bottom of the coil pipe is communicated with a water outlet of the cooling water tank, the top of the coil pipe is communicated with a water inlet of the cooling water tank, a blanking pipe is communicated with the top of the hopper, an upper flange is arranged on the outer side of the upper portion of the blanking pipe, the upper flange and the lower flange of the blanking pipe are in a sleeved connection mode and are fixedly connected through butterfly bolts, a supporting platform is arranged above the hopper, a bin is erected on the supporting platform, a discharging pipe is communicated with the bottom of the bin, a control valve is arranged on the upper portion of the discharging pipe, and a telescopic corrugated pipe is fixedly connected with the lower portion of the discharging pipe. The utility model can realize the blocking of the top of the hopper, the water cooling of the blanking pipe and the uniform and controllable blanking, and is more practical.

Description

Discharging mechanism of extruder

Technical Field

The utility model belongs to the technical field of extruders, and particularly relates to an extruder blanking mechanism.

Background

The PPR pipe fitting is a pipe manufactured by adopting a hot melt plastic blowing mode, has the advantages of energy conservation, material saving, environmental protection, light weight, high strength, corrosion resistance, long service life and the like, and is widely applied to the fields of building water supply and drainage, municipal administration, industry, agriculture and the like.

At present, the production process flow of the PPR pipe mainly comprises the steps of raw material mixing, feeding and drying, screw shearing, extrusion, melting, preplasticizing, sizing sleeve cooling preliminary shaping, spray box/water tank cooling shaping, cooling, code spraying and printing, cutting quality inspection and the like. The screw extruder mainly relies on the pressure and shearing force generated by screw rotation to fully plasticize and uniformly mix materials, and the materials are molded by a die. The prior conventional screw extruder mainly comprises six parts, namely a transmission part, a feeding device, a charging barrel, a screw, a machine head, a mouth mold and the like, wherein a heater is arranged on the outer wall or the inner wall of the charging barrel, the feeding device generally adopts a hopper, a discharging opening at the top of the hopper and the bottom of the hopper are communicated with the inside of the charging barrel, and then raw materials are directly fed into the hopper, and the charging barrel is discharged through the hopper so as to realize extrusion processing in a matched manner. However, the following problems exist in the practical use of the hopper type blanking structure: 1. the material is directly put into the hopper through the open top, so that dust pollution exists, the environment is not protected enough, the blanking speed is not uniform enough, the blanking is negligent, and the follow-up extrusion processing is not facilitated; 2. because of the heat transfer effect of the charging barrel, the temperature of the discharging opening of the hopper which is directly communicated with the charging barrel is higher, and then partial materials are easily melted in advance to block the discharging opening, which is not beneficial to the subsequent normal extrusion processing and needs to be improved.

Disclosure of Invention

Accordingly, the present utility model is directed to an extruder blanking mechanism, which can realize the plugging of the top of a hopper, the water cooling of a blanking pipe and the uniform and controllable blanking, so as to solve the above problems.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows: the utility model provides an extruder unloading mechanism, includes feed cylinder and hopper of extruder, the mount is equipped with cooling water tank on the outer top of feed cylinder, outer top and the position department fixed intercommunication that corresponds rather than the feed inlet have the sleeve, telescopic top outside is equipped with down flange, the inside cavity of lateral wall is equipped with the cavity, around being equipped with the coil pipe in the cavity, sleeve and its bottom are all stretched out to the top end both ends of coil pipe and the delivery port intercommunication of its bottom through the inlet tube that has the inlet pump and cooling water tank, top are through the wet return that has the return pump and the water inlet intercommunication of cooling water tank, the open top of hopper, bottom intercommunication have the unloading pipe, the upper portion outside of unloading pipe is equipped with the flange, the unloading pipe plug bush is equipped with flange and lower flange butt and through a plurality of bolt fixed connection in the sleeve, the top of hopper is equipped with supporting platform on the supporting platform, the bottom intercommunication of feed bin has the discharging pipe, the upper portion of feed bin is equipped with the control valve, the lower part runs through supporting platform and fixed intercommunication has the bellows, the supporting platform both sides's supporting platform bottom all is equipped with vertically and has the impeller, and the impeller of impeller cylinder, the same impeller is equipped with the impeller cylinder down and the impeller is connected to the impeller of a plurality of impeller, and the impeller cylinder is equipped with a plurality of impeller shafts down at the top and the impeller, and the impeller cylinder is connected to the top of the same impeller cylinder, and the impeller cylinder is connected to the top of the impeller cylinder has the impeller cylinder that has the impeller.

Preferably, a plurality of first internal thread holes are uniformly distributed on the lower flange at circumferential intervals, a plurality of second internal thread holes are uniformly distributed on the upper flange at circumferential intervals, the first internal thread holes and the second internal thread holes are in one-to-one correspondence, and one end of a screw rod of the butterfly bolt penetrates through the corresponding first internal thread holes and the corresponding second internal thread holes.

Preferably, the diameter of the cover plate is larger than the outer diameter of the hopper, and a sealing gasket is arranged on the bottom surface of the cover plate.

Preferably, a rotating roller is horizontally arranged in the hopper, two ends of the rotating roller are both rotationally connected to the corresponding side wall of the hopper, one end of the rotating roller extends out of the hopper and is connected with a second motor in a transmission manner, and a plurality of beating rods are uniformly distributed on the peripheral side of the rotating roller.

The beneficial effects of the utility model are as follows: when the charging barrel of the extruder is charged, the two hydraulic cylinders can be operated firstly, so that the piston rod of the hydraulic cylinders is extended, the cover plate can be driven to move downwards until the cover plate seals the hopper, and therefore the problems of dust scattering and pollution during charging can be effectively avoided, and the charging barrel is more environment-friendly. Then, the first motor is operated and the control valve is opened, so that raw materials stored in the bin can be discharged into the discharging box through the discharging pipe and the telescopic corrugated pipe, the operation of the first motor can drive the impeller shaft and impeller blades on the impeller shaft to rotate, so that the material limiting effect on the raw materials can be realized by utilizing the rotating impeller blades, the raw materials can be uniformly and continuously discharged into the hopper, the discharging speed can be controlled by controlling and adjusting the rotating speed of the first motor, the discharging amount can be regulated and controlled more conveniently, the discharging is ensured to be stable and smooth, and the subsequent extrusion production and processing are facilitated;

after the raw materials enter the hopper, the raw materials can be collected to a blanking pipe under the guidance of the hopper, and the blanking pipe is used for blanking the feeding cylinder, so that the feeding operation of the feeding cylinder is realized. In the process, the blanking pipe is inserted into the sleeve and is not directly communicated with the charging barrel, so that the heat transferred to the blanking pipe by the charging barrel can be effectively reduced. Simultaneously, cooling water tank, intake pump and return water pump operation for cooling water that cooling water tank produced can flow through the coil pipe, and the back flows back cooling water tank again after carrying out the heat exchange with the unloading pipe, thereby can realize the effective water-cooling treatment to the unloading pipe through circulating flowing cooling water, with this can effectively avoid the raw materials to melt in advance, guarantees the unobstructed of unloading pipe, makes the raw materials can the unloading feed cylinder smoothly, does not influence extrusion processing operation. In addition, when the hopper needs to be overhauled or replaced, the hydraulic cylinder only needs to be operated in a stop state, so that a piston rod of the hydraulic cylinder is contracted, the cover plate can be driven to move up to a proper height, and then the butterfly bolt is screwed down, so that the blanking pipe can be easily pulled out of the sleeve, and the original hopper is detached, so that the hydraulic cylinder is overhauled or replaced, and the hydraulic cylinder is simple and convenient to operate and more practical.

Drawings

FIG. 1 is a schematic diagram of the front view of the present utility model;

FIG. 2 is a schematic diagram of the front view of the cartridge and its upper cooling water tank and sleeve of the present utility model;

FIG. 3 is a schematic view of the front view of the hopper of the present utility model;

FIG. 4 is a schematic view of the connection structure of the hopper and the sleeve according to the utility model; a step of

Fig. 5 is a schematic diagram of the front view of the cover plate and the blanking box thereon.

Reference numerals in the drawings: 1 is a charging barrel, 2 is a hopper, 3 is a cooling water tank, 4 is a sleeve, 5 is a lower flange, 6 is a cavity, 7 is a coil pipe, 8 is a water inlet pump, 9 is a water inlet pipe, 10 is a water return pump, 11 is a water return pipe, 12 is a discharging pipe, 13 is an upper flange, 14 is a butterfly bolt, 15 is a supporting platform, 16 is a storage bin, 17 is a discharging pipe, 18 is a control valve, 19 is a telescopic bellows, 20 is a hydraulic cylinder, 21 is a cover plate, 22 is a discharging box, 23 is an impeller shaft, 24 is a first motor, 25 is impeller blades, 26 is a first internal thread through hole, 27 is a second internal thread through hole, 28 is a sealing gasket, 29 is a rotating roller, 30 is a second motor, and 31 is a material beating rod.

Detailed Description

The utility model is described in further detail below with reference to the attached drawings and detailed description:

as shown in fig. 1 to 5, an extruder blanking mechanism includes a barrel 1 and a hopper 2 of an extruder. The upper fixing frame on the outer top of feed cylinder 1 is equipped with coolant tank 3, the fixed intercommunication in position department that outer top corresponds with its feed inlet has sleeve 4, the top outside of sleeve 4 is equipped with flange 5 down, the inside cavity of lateral wall is equipped with cavity 6, around being equipped with coil pipe 7 in the cavity 6, the sleeve 4 is all stretched out at the top end both ends of coil pipe 7 and its bottom through the inlet tube 9 with intake pump 8 with coolant tank 3's delivery port intercommunication, the top is through the wet return 11 with coolant tank 3's water inlet intercommunication that has wet return 10. The top of the hopper 2 is open, the bottom is communicated with a blanking pipe 12, an upper flange 13 is arranged on the outer side of the upper part of the blanking pipe 12, the blanking pipe 12 is inserted into the sleeve 4, and the upper flange 13 is abutted with the lower flange 5 and fixedly connected with the lower flange through a plurality of butterfly bolts 14. The upper side of the hopper 2 is provided with a supporting platform 15, a storage bin 16 is erected on the supporting platform 15, the bottom of the storage bin 16 is communicated with a discharging pipe 17, the upper part of the discharging pipe 17 is provided with a control valve 18, and the lower part of the discharging pipe penetrates through the supporting platform 15 and is fixedly communicated with a telescopic corrugated pipe 19. The bottoms of the supporting platforms 15 on two sides of the telescopic corrugated pipe 19 are vertically provided with hydraulic cylinders 20, piston rods of the two hydraulic cylinders 20 face downwards and are fixedly connected with the same cover plate 21, the cover plate 21 can be covered on the top of the hopper 2, and a discharging box 22 is horizontally arranged on the top of the cover plate 21. The top of the blanking box 22 is communicated with the bottom end of the telescopic corrugated pipe 19, the bottom of the blanking box is communicated to the bottom surface of the cover plate 21, an impeller shaft 23 is arranged in the blanking box, two ends of the impeller shaft 23 are both rotationally connected to the corresponding side wall of the blanking box 22, one end of the impeller shaft extends out of the blanking box 22 and is in transmission connection with a first motor 24, and a plurality of impeller blades 25 are circumferentially distributed on the impeller shaft 23;

when feeding materials into the charging barrel 1 of the extruder, the two hydraulic cylinders 20 can be operated firstly, so that the piston rods of the hydraulic cylinders are extended, the cover plate 21 can be driven to move downwards until the cover plate 21 seals the hopper 2, and therefore the problems of dust scattering and pollution during feeding can be effectively avoided, and the extruder is more environment-friendly. Then, the first motor 24 is operated and the control valve 18 is opened, so that raw materials stored in the storage bin 16 can be discharged into the discharging box 22 through the discharging pipe 17 and the telescopic corrugated pipe 19, the operation of the first motor 24 can drive the impeller shaft 23 and the impeller blades 25 on the impeller shaft 23 to rotate, so that the material limiting effect on the raw materials can be realized by utilizing the rotating impeller blades 25, the raw materials can be uniformly and continuously discharged into the hopper 2, the discharging speed can be controlled by controlling and adjusting the rotating speed of the first motor 24, the discharging quantity can be regulated and controlled more conveniently, the stable and smooth discharging is ensured, and the subsequent extrusion production and processing are facilitated;

after the raw materials enter the hopper 2, the raw materials can be collected to the blanking pipe 12 under the guidance of the hopper 2, and the blanking pipe 12 is used for blanking the feeding barrel 1, so that the feeding operation of the feeding barrel 1 is realized. In the process, the blanking pipe 12 is inserted into the sleeve 4 and is not directly communicated with the charging barrel 1, so that the heat transferred to the blanking pipe 12 by the charging barrel 1 can be effectively reduced. Simultaneously, cooling water tank 3, intake pump 8 and return water pump 10 operation for cooling water that cooling water tank 3 produced can flow through coil pipe 7, and the back flows back cooling water tank 3 after carrying out the heat exchange with unloading pipe 12, thereby can realize the effective water-cooling treatment to unloading pipe 12 through the cooling water that circulation flows, with this can effectively avoid the raw materials to melt in advance, guarantee the unobstructed of unloading pipe 12, make the raw materials can unloading feed cylinder 1 smoothly, do not influence extrusion processing operation. In addition, when the hopper 2 needs to be overhauled or replaced, the hydraulic cylinder 20 is only required to be operated in a stop state, so that the piston rod of the hydraulic cylinder is contracted, the cover plate 21 can be driven to move up to a proper height, the butterfly bolt 14 is unscrewed, the blanking pipe 12 can be easily pulled out of the sleeve 4, and the original hopper 2 is detached, so that the hydraulic cylinder is overhauled or replaced, and the hydraulic cylinder is simple and convenient to operate and more practical. The cooling water tank 3 adopts a conventional integrated cooling water tank in the prior art, is an existing advanced circulating water cooling device, can be widely applied to the matching of other electric appliances and mechanical equipment needing circulating water cooling, is internally integrated with components such as a water circulation radiator, a cooling fan, a waterway circulation system, a water level indicating device and the like, and can realize the cooling operation of the cooling water on the equipment and the reflux cyclic utilization of the cooling water by matching with a circulating water pump during use, so that the cooling water cooling device is convenient to use and does not waste water resources.

In this embodiment, a plurality of first internal threaded holes 26 are uniformly distributed on the lower flange 5 at circumferential intervals, a plurality of second internal threaded holes 27 are uniformly distributed on the upper flange 13 at circumferential intervals, the first internal threaded holes 26 and the second internal threaded holes 27 are in one-to-one correspondence, and one end of a screw rod of the butterfly bolt 14 penetrates through the corresponding first internal threaded holes 26 and second internal threaded holes 27, so that the upper flange 13 can be fixedly connected with the lower flange 5 through the butterfly bolt 14, and the hopper 2 can be conveniently and flexibly disassembled, overhauled and replaced. The butterfly bolt 14 is achieved by the prior art, has the characteristic of being convenient for hand screwing operation, and is more practical.

In this embodiment, the cover plate 21 has a diameter greater than the outer diameter of the hopper 2 to ensure that the cover plate 21 has sufficient area to cover the hopper 2. The bottom surface of the cover plate 21 is provided with a sealing gasket 28 to ensure the sealing effect of the cover plate on the hopper 2, thereby avoiding the problem of dust pollution during feeding.

In this embodiment, a rotating roller 29 is horizontally disposed in the hopper 2, two ends of the rotating roller 29 are both rotatably connected to corresponding side walls of the hopper 2, one end of the rotating roller extends out of the hopper 2 and is in transmission connection with a second motor 30, a plurality of stirring rods 31 are uniformly distributed on the peripheral side of the rotating roller 29, so that when materials flow through the hopper 2 from top to bottom, the second motor 30 can be operated, the rotating roller 29 and a plurality of stirring rods 31 on the rotating roller 29 are driven to rotate by using the power provided by the second motor 30, and therefore the materials passing through can be effectively scattered by the stirring rods 31, the materials are prevented from agglomerating to block the blanking tube 12, and smooth blanking can be further ensured.

The foregoing description of the preferred embodiments of the utility model is not intended to limit the utility model to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the utility model are intended to be included within the scope of the utility model.

Claims (4)

1. The utility model provides an extruder feed mechanism, includes feed cylinder and hopper of extruder, its characterized in that, the mount is equipped with cooling water tank on the outer top of feed cylinder, the fixed intercommunication in position department that outer top corresponds rather than the feed inlet has the sleeve, telescopic top outside is equipped with down flange, the inside cavity of lateral wall is equipped with the cavity, around being equipped with the coil pipe in the cavity, sleeve and its bottom are all stretched out at the top end both ends of coil pipe and the delivery port intercommunication of its bottom through the inlet tube that has the inlet pump and cooling water tank, top are through the return tube that has the return pump and the water inlet intercommunication of cooling water tank, the open top of hopper, bottom intercommunication have the unloading pipe, the upper portion outside of unloading pipe is equipped with the flange, unloading pipe plug bush is in the sleeve and flange butt and through a plurality of butterfly bolt fixed connection down, the top of hopper is equipped with supporting platform, the supporting platform erects the feed bin, the bottom intercommunication of feed bin has the tube, the supporting platform is equipped with control valve, the lower part and runs through supporting platform and fixedly communicates there is the bellows, the supporting platform both sides's bottom has the impeller motor to be equipped with the impeller, and the impeller cylinder is equipped with the impeller cylinder down at the top of a plurality of the same impeller and the impeller that has the impeller cylinder to stretch out at the top of a plurality of the impeller cylinder, the impeller cylinder that the impeller cylinder is connected to the top of the same, and the impeller cylinder is connected to the top of the impeller cylinder that has the top of the impeller cylinder is connected to the top of the top.

2. The extruder blanking mechanism of claim 1, wherein a plurality of first internal threaded holes are uniformly distributed on the lower flange at circumferential intervals, a plurality of second internal threaded holes are uniformly distributed on the upper flange at circumferential intervals, the first internal threaded holes and the second internal threaded holes are in one-to-one correspondence, and one end of a screw of the butterfly bolt penetrates through the corresponding first internal threaded holes and second internal threaded holes.

3. The extruder blanking mechanism of claim 1, wherein the cover plate has a diameter greater than the outer diameter of the hopper and a gasket disposed on a bottom surface thereof.

4. The blanking mechanism of an extruder as set forth in claim 1 wherein a rotating roller is horizontally disposed in said hopper, both ends of said rotating roller are rotatably connected to corresponding side walls of said hopper, one end of said rotating roller extends out of said hopper and is drivingly connected to a second motor, and a plurality of striking rods are uniformly distributed on the peripheral side of said rotating roller.