CN213972469U

CN213972469U - Efficient single screw extruder

Info

Publication number: CN213972469U
Application number: CN202022764167.9U
Authority: CN
Inventors: 张卫东
Original assignee: Nantong Shimao Electromechanical Equipment Co ltd
Current assignee: Nantong Shimao Electromechanical Equipment Co ltd
Priority date: 2020-11-25
Filing date: 2020-11-25
Publication date: 2021-08-17
Anticipated expiration: 2030-11-25

Abstract

The application relates to a high-efficiency single-screw extruder, relating to the technical field of plastic processing; the extrusion cylinder assembly comprises a base, wherein a plurality of extrusion cylinders which are mutually communicated are arranged above the base, screw rods are jointly arranged in all the extrusion cylinders, a motor for driving the screw rods to rotate circumferentially is arranged on the base, the extrusion cylinder close to the motor is an initial extrusion cylinder, the top of the initial extrusion cylinder is communicated with a feed hopper, a dredging rod is rotatably connected inside the feed hopper, dredging blades are arranged on the outer side wall of the dredging rod, one end of the screw rod penetrates through the initial extrusion cylinder and is fixedly connected to the driving end of the motor, and a gear set for driving the dredging rod to rotate simultaneously along with the screw rods is jointly connected between the screw rod and the dredging rod; this application has the effect of alleviating material jam in the feeding fill, improves material conveying efficiency.

Description

Efficient single screw extruder

Technical Field

The application relates to the technical field of plastic processing, in particular to a high-efficiency single-screw extruder.

Background

The single screw extruder is one of the common plastic extruders, is mainly used for extruding soft and hard polyvinyl chloride, polyethylene and other thermoplastic plastics, can be used for processing various plastic products such as blown film, extruded tube, pressing plate, wire drawing belt and the like, and can also be used for melt granulation.

A Chinese patent with a related publication number of CN207874811U discloses a single-screw plastic extruder, which comprises a first extruding cylinder, a second extruding cylinder communicated with one end of the first extruding cylinder through a flange plate; a feed hopper is arranged on the outer side wall of the first extrusion cylinder, and a discharge port is arranged at one end of the second extrusion cylinder, which is far away from the first extrusion cylinder; a driving screw rod is rotatably connected inside the first extrusion cylinder, one end of the driving screw rod is connected with a rotating motor, the other end of the driving screw rod is connected with a driven screw rod, and the driven screw rod is positioned inside the second extrusion cylinder; a heating plate is arranged at the bottom of the second extrusion cylinder, an exhaust pipe is inserted through the top of the second extrusion cylinder, and one end of the exhaust pipe, which is far away from the second extrusion cylinder, is communicated with an exhaust fan; in the course of the work, pour into the material into first extrusion tube from the feeder hopper in, start rotating electrical machines and rotate with drive initiative hob and driven hob to carry the material to the second extrusion tube in, heat the material through the hot plate and melt and finally extrude from the discharge gate of second extrusion tube, carry out the control by temperature change to the second extrusion tube through the exhaust fan at this in-process, give off unnecessary heat.

In view of the above-mentioned related art, the inventor thinks that because the bore of the upper end of the feed hopper is smaller than the bore of the lower end of the feed hopper, when a material enters the first extrusion cylinder through the feed hopper, the material is likely to jam at the joint of the first extrusion cylinder and the second extrusion cylinder, which results in slow feeding and low processing efficiency.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems that the material jam exists in the connection position of a first extruding cylinder and a second extruding cylinder in the related art, the feeding is slow, and the processing efficiency is low, the application provides an efficient single-screw extruder.

The application provides a high-efficiency single screw extruder adopts following technical scheme:

the utility model provides an efficient single screw extruder, includes the base, the base top is provided with the extrusion cylinder of a plurality of mutual intercommunication, and is whole be provided with the hob jointly in the extrusion cylinder, be provided with on the base and be used for driving hob circumferential direction's motor, be close to the extrusion cylinder of motor department is originated extrusion cylinder, originated extrusion cylinder top intercommunication is provided with the feeder hopper, the inside rotation of feeder hopper is connected with dredging rod, dredging rod lateral wall is provided with the mediation blade, hob wherein one end runs through originated extrusion cylinder and fixed connection in motor drive end, be connected with jointly between hob and the dredging rod and be used for driving dredging rod along with hob pivoted gear train simultaneously.

Through adopting above-mentioned technical scheme, when the starter motor, the motor drive hob pivoted drives dredging rod synchronous rotation simultaneously to need not to increase in addition drive dredging rod pivoted setting, after the material gets into in the feeder hopper, pivoted dredging rod and mediation blade can accelerate the material and get into the initial speed of extruding in the section of thick bamboo, alleviate the material phenomenon of blocking up, improve machining efficiency.

Optionally, the feed hopper includes the heat-conducting plate, hot-blast hose is inserted to the heat-conducting plate inside.

Through adopting above-mentioned technical scheme, carry hot-blastly in the hot-blast hose to remove the tide to the feeder hopper inner wall and the material that is located the feeder hopper, keep the material dry, reduce the down resistance of material, avoid appearing that moist material glues each other and is in the same place or glues the feeder hopper inner wall and aggravate the phenomenon of blocking up of material.

Optionally, the outer side wall of the heat conducting plate is provided with a spiral hole for embedding the hot air hose along the circumferential direction of the heat conducting plate.

Through adopting above-mentioned technical scheme, the heated area of feeder hopper can have been enlarged in the setting up of spiral hole to realize the thermally equivalent of feeder hopper, optimize and remove damp effect.

Optionally, the feed hopper still includes the heated board, the heated board is connected in the lateral wall that the heat-conducting plate is close to spiral hole department, hot-blast hose is located between heat-conducting plate and the heated board.

Through adopting above-mentioned technical scheme, the setting of heated board can play the heat preservation effect, delays thermal speed that gives off in the feeder hopper, improves the effect of removing damp to the feeder hopper.

Optionally, a heating element for heating the material is arranged in each extrusion cylinder, a cooling fan is arranged on one side of each extrusion cylinder, and an air outlet of each cooling fan is communicated with the corresponding extrusion cylinder; and the tops of all the extrusion cylinders are communicated with an exhaust hose together, and the exhaust hose is communicated with a hot air hose.

Through adopting above-mentioned technical scheme, through cooling blower with the steam of each extruding cylinder in discharge from the exhaust hose, link to each other hot-blast hose and exhaust hose to make full use of exhaust hot gas preheats the feeder hopper, in order to improve resource utilization.

Optionally, a buffer tube is communicated between the feed hopper and the initial extrusion cylinder, and the lower end of the buffer tube is obliquely arranged in a direction away from the motor.

Through adopting above-mentioned technical scheme, the setting up of buffer tube can guide the material in the feeder hopper to remove towards the direction of keeping away from the motor, can reduce the material on the one hand and block up at the initial section of thick bamboo tip of extruding, and on the other hand can help accelerating the conveying speed of hob, improves machining efficiency.

Optionally, a storage box is arranged above the hopper, a feeding pipe is arranged below the storage box, an electric valve used for opening and closing the feeding pipe is arranged on the feeding pipe, the electric valve is electrically connected with a controller, and the controller is further electrically connected with a first detection module used for detecting the height of the material in the feeding hopper.

Through adopting above-mentioned technical scheme, when the material altitude value that first detection module detected was less than the default, the controller started electric valve, realized automatic feed, when the material altitude value that first detection module detected was higher than the default, will stop the feed, avoids aggravating the phenomenon of blocking up of interior material of feeding fill.

Optionally, the controller is also electrically connected with a second detection module for detecting the remaining amount of the material in the storage box, and the controller is electrically connected with a warning light for alarming when the value detected by the second detection module is lower than a preset value.

Through adopting above-mentioned technical scheme to the realization is to the real-time detection of material surplus in the storage case, guarantees can be steady incessant supply material, improves machining efficiency.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the speed of the material entering the initial extrusion cylinder is increased through the rotating dredging rod and the dredging blades, so that the material congestion phenomenon is relieved, and the processing efficiency is improved;

2. detect the material height in the feeder hopper through first detection module, when the material height value that first detection module detected was higher than the default, will stop the feed, avoid aggravating the phenomenon of blocking up of interior material of feeding hopper.

Drawings

FIG. 1 is a schematic view of a high-efficiency single-screw extruder in the example;

FIG. 2 is a partial sectional view showing the positional relationship among the hopper, the starter extrusion cylinder and the hopper in the embodiment;

fig. 3 is a partially enlarged view of the structure of part a in fig. 2.

Description of reference numerals: 1. a base; 11. an extrusion cylinder; 111. starting an extrusion cylinder; 112. a terminal extrusion barrel; 113. an exhaust hole; 1131. an exhaust hose; 1132. a hot air hose; 114. a screw rod; 115. a discharge port; 12. a motor; 13. a gear set; 131. a main gear; 132. a pinion gear; 133. a docking gear; 14. a controller; 141. a first detection module; 142. a second detection module; 143. a warning light; 15. a feed hopper; 151. a heat conducting plate; 1511. a helical bore; 152. a thermal insulation board; 153. dredging the rod; 1531. dredging the leaves; 16. a buffer tube; 17. a material storage box; 171. a feed pipe; 1711. an electrically operated valve; 18. a heating member; 19. and (5) cooling the fan.

Detailed Description

The present application is described in further detail below with reference to figures 1-3.

The embodiment of the application discloses a high-efficiency single-screw extruder. Referring to fig. 1 and 2, the single screw extruder comprises a base 1, wherein a plurality of extruding cylinders 11 which are connected together through flanges are arranged on the upper surface of the base 1 along the length direction of the base, and the interiors of the adjacent extruding cylinders 11 are communicated with each other; the screw rods 114 are connected to the insides of all the extrusion cylinders 11 in a co-rotating mode, the motor 12 is placed on the base 1, and one end of each screw rod 114 penetrates through the extrusion cylinder 11 and is welded to the driving end of the motor 12.

Referring to fig. 1, the extrusion cylinder 11 close to the motor 12 is a starting extrusion cylinder 111, the extrusion cylinder 11 far away from the motor 12 is a tail end extrusion cylinder 112, and a discharge port 115 is formed in the end of the tail end extrusion cylinder 112; a material storage box 17, a feed hopper 15 and a buffer pipe 16 are sequentially arranged above the initial extrusion cylinder 111 from top to bottom; the lower extreme of storage case 17 is run through and is inserted and be equipped with the feed pipe 171 that is used for inputing the material into in feeder hopper 15, is provided with the electric valve 1711 that is used for opening and close feed pipe 171 on the feed pipe 171, and feeder hopper 15 lower extreme is linked together with buffer tube 16, and buffer tube 16 lower extreme runs through the initial 111 roof of extruding, and buffer tube 16 lower extreme sets up towards the direction slope of keeping away from motor 12.

Referring to fig. 1, a dredging rod 153 is rotatably connected inside the feed hopper 15, and a plurality of dredging blades 1531 are fixedly welded on the outer side wall of the dredging rod 153; a gear set 13 is commonly arranged between the dredging rod 153 and the screw rod 114, and the gear set 13 comprises a main gear 131 fixedly sleeved on the screw rod 114, a pinion 132 fixedly sleeved on the dredging rod 153, and a butt gear 133 engaged and connected between the main gear 131 and the pinion 132.

Referring to fig. 1 and 2, a first detection module 141 for detecting the height of the material in the feed hopper 15 is embedded in an outer surface of the storage bin 17 facing the feed hopper 15, the first detection module 141 may be an ultrasonic level sensor, the first detection module 141 is electrically connected to the controller 14, the controller 14 may be a PLC controller, and the controller 14 is electrically connected to the electric valve 1711, so as to close the electric valve 1711 when the height of the material detected by the first detection module 141 is higher than a preset value, so as to stop the material from being fed to the feed hopper 15 from the storage bin 17, thereby avoiding aggravating the situation of material congestion in the feed hopper 15.

Referring to fig. 1 and 2, the controller 14 is further electrically connected with a second detection module 142 for detecting the remaining amount of the material in the storage tank 17, the second detection module 142 may be an ultrasonic level sensor, the second detection module 142 is embedded in the top wall of the storage tank 17, the controller 14 is further electrically connected with a warning lamp 143 for starting when the value detected by the second detection module 142 is lower than a preset value, the warning lamp 143 is an LED lamp, and the warning lamp 143 is fixedly adhered to the outer side wall of the storage tank 17 to remind an operator to supply the material in time.

Referring to fig. 1 and 2, a heating element 18 is mounted at the bottom of each extrusion cylinder 11, the heating element 18 is a heating resistance wire, a cooling fan 19 is disposed at a position of the base 1 close to each extrusion cylinder 11, an air outlet of the cooling fan 19 is communicated with the inside of the extrusion cylinder 11 at a corresponding position, and an exhaust hole 113 is formed in the top wall of each extrusion cylinder 11 in a penetrating manner; so as to melt the material in the extruding cylinder 11 through the heating element 18, and discharge part of hot gas in the extruding cylinder 11 through the cooling fan 19 and the exhaust hole 113, thereby realizing temperature control.

Referring to fig. 1 and 3, an exhaust hose 1131 is fixedly inserted into all the exhaust holes 113, a hot air hose 1132 is communicated with one end of the exhaust hose 1131 away from the exhaust holes 113, and the end of the hot air hose 1132 is adhered to the end of the exhaust hose 1131; the feeding hopper 15 comprises a heat conducting plate 151 and a heat insulation plate 152 positioned outside the heat conducting plate 151, wherein the heat conducting plate 151 can be made of a metal copper material, and the heat insulation plate 152 can be made of a rock wool material; the outer side wall of the heat conducting plate 151 is provided with a spiral hole 1511 along the circumferential direction, and the hot air hose 1132 is inserted into the spiral hole 1511, and the heat insulation plate 152 is detachably connected to the outer side wall of the heat conducting plate 151 close to the spiral hole 1511 through a bolt; so as to dehumidify and dehumidify the feed hopper 15 and the materials inside the feed hopper, and avoid the situation that the materials with moisture are stuck together to cause the feed hopper 15 to block up.

The implementation principle of the high-efficiency single-screw extruder in the embodiment of the application is as follows: firstly, materials are prestored in the storage box 17, the electric valve 1711 is opened through the controller 14, the materials in the storage box 17 are input into the feed hopper 15, then the motor 12 is started, the motor 12 drives the dredging rod 153 and the screw rod 114 to rotate simultaneously, so that the dredging rod 153 and the dredging blade 1531 are used for accelerating the entering of the materials in the feed hopper 15 into the initial extruding cylinder 111, in the process, the height of the materials in the feed hopper 15 is detected in real time through the first detection module 141, and when the detection value of the first detection module 141 is higher than the preset value, the controller 14 closes the electric valve 1711 to stop feeding, and the jam condition in the feed hopper 15 is relieved.

After the material enters the initial extrusion cylinder 111, the material is conveyed through the screw rod 114, during the conveying process, the material is heated by the heating element 18 to be molten to a viscous flow state, and then the material is extruded from the discharge port 115 of the terminal extrusion cylinder 112 through the screw rod 114; in the heating process, air is introduced into the extrusion cylinder 11 through the cooling fan 19, so that hot air in the extrusion cylinder 11 is discharged from the exhaust holes 113, and the hot air enters the hot air hose 1132 through the exhaust hose 1131 to preheat the feed hopper 15, thereby reducing the moisture of the materials in the feed hopper 15 and the feed hopper 15.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides an efficient single screw extruder, includes base (1), base (1) top is provided with a plurality of extrusion section of thick bamboo (11) that communicate each other, and is whole be provided with hob (114) jointly in extrusion section of thick bamboo (11), be provided with on base (1) and be used for driving hob (114) circumferential direction's motor (12), be close to extrusion section of thick bamboo (11) of motor (12) department are for the originated section of thick bamboo (111) of extruding, the originated section of thick bamboo (111) top intercommunication of extruding is provided with feeder hopper (15), its characterized in that: feed hopper (15) internal rotation is connected with dredging rod (153), dredging rod (153) lateral wall is provided with mediation blade (1531), screw rod (114) wherein one end runs through initial extrusion cylinder (111) and fixed connection in motor (12) drive end, be connected with jointly between screw rod (114) and dredging rod (153) and be used for driving dredging rod (153) along with screw rod (114) pivoted gear train (13) simultaneously.

2. A high efficiency single screw extruder as claimed in claim 1, wherein: feeder hopper (15) include heat-conducting plate (151), heat-conducting plate (151) inside is inserted and is equipped with hot-blast hose (1132).

3. A high efficiency single screw extruder as claimed in claim 2, wherein: the outer side wall of the heat conducting plate (151) is provided with a spiral hole (1511) embedded with a hot air hose (1132) along the circumferential direction of the outer side wall.

4. A high efficiency single screw extruder as claimed in claim 3, wherein: feeder hopper (15) still include heated board (152), heated board (152) are connected in heat-conducting plate (151) and are close to the lateral wall of spiral hole (1511) department, hot-blast hose (1132) are located between heat-conducting plate (151) and heated board (152).

5. A high efficiency single screw extruder as claimed in claim 1, wherein: a heating element (18) for heating materials is arranged in each extrusion cylinder (11), a cooling fan (19) is arranged on one side of each extrusion cylinder (11), and an air outlet of each cooling fan (19) is communicated with the extrusion cylinder (11) at the corresponding position; all the tops of the extrusion cylinders (11) are communicated with an exhaust hose (1131) together, and the exhaust hose (1131) is communicated with a hot air hose (1132).

6. A high efficiency single screw extruder as claimed in claim 1, wherein: a buffer tube (16) is communicated between the feed hopper (15) and the initial extrusion cylinder (111), and the lower end of the buffer tube (16) is obliquely arranged in the direction away from the motor (12).

7. A high efficiency single screw extruder as claimed in claim 1, wherein: hopper top is provided with storage case (17), storage case (17) below is provided with feed pipe (171), be provided with electric valve (1711) that are used for opening and close feed pipe (171) on feed pipe (171), electric valve (1711) electricity is connected with controller (14), controller (14) still electricity is connected with and is used for detecting first detection module (141) of material height in feeder hopper (15).

8. A high efficiency single screw extruder as claimed in claim 7, wherein: the controller (14) is also electrically connected with a second detection module (142) for detecting the material allowance inside the material storage box (17), and the controller (14) is electrically connected with a warning lamp (143) for alarming when the value detected by the second detection module (142) is lower than a preset value.