CN209534100U - A screw extruder with double feeding device - Google Patents

Abstract

The utility model belongs to the technical field of the plastics processing machinery technique and specifically relates to indicate a take two feed arrangement's screw extruder, which comprises a frame, first barrel, the second barrel, first drive arrangement, second drive arrangement, locate the first feed arrangement of the feed end of first barrel and locate the second feed arrangement of the feed end of second barrel, first barrel internalization is provided with first extrusion screw, first extrusion screw is connected with first drive arrangement's output drive, second barrel internalization is provided with the second and extrudes the screw, the second is extruded the screw and is connected with second drive arrangement's output drive, the bottom of first barrel and second barrel all is provided with heating device. The utility model provides a pair of take two feed arrangement's screw extruder can separately carry out the melting of raw materials simultaneously and automatic mixing again together, finally extrudees work, improves production efficiency, and the melting effect of raw materials is better.

Description

A screw extruder with double feeding device

technical field

The utility model relates to the technical field of plastic preparation machinery, in particular to a screw extruder with double feeding devices.

Background technique

The production of plastic products often requires the mixing of various materials, such as the production of color masterbatch, the raw materials are carrier and carbon black, etc. The current production method is usually to melt, filter and extrude the carrier through an extruder, and then cut The granulator cuts into pellets, and then feeds the cut pellets together with carbon black and other raw materials into the extruder through a weighing scale, and performs melting, extrusion and pelletizing operations again to complete the manufacture of masterbatch.

In the above process, the treated and cut granules are used together with carbon black to make color masterbatches. Many existing practices are to feed all raw materials into the extruder at the same time. Different raw materials will easily lead to poor melting effect, and the granules from When the solid is melted into a liquid and then coated with other raw materials such as carbon black, the coating effect is not good, resulting in poor quality of the final product; and some methods use different extruders to melt and extrude different raw materials first, and then re- Mixed together and then extruded, resulting in low production efficiency.

Utility model content

The utility model provides a screw extruder with a double feeding device for the problems of the prior art, which is provided with a first feeding device and a second feeding device, which can separate and melt the raw materials at the same time and then automatically mix them together, finally Extrusion is carried out, so the production efficiency can be improved, and the melting effect of raw materials is better.

In order to solve the above technical problems, the utility model adopts the following technical scheme: a screw extruder with double feeding device, including a frame, a first barrel, a second barrel, a first driving device, and a second driving device , the first feed device that is located at the feed end of the first machine barrel and the second feed device that is located at the feed end of the second machine barrel, described first machine barrel, second machine barrel, first driving device and The second driving devices are all fixed on the frame, and the first extruding screw is movably arranged in the first barrel, and the first extruding screw is drivingly connected with the output end of the first driving device. A second extruding screw is movably arranged in the cylinder, and the second extruding screw is drivingly connected to the output end of the second driving device, and the bottoms of the first barrel and the second barrel are provided with heating devices;

The discharge end of the second barrel communicates with the first barrel, and a communication valve is installed in the discharge end of the second barrel. The communication valve includes a baffle and a handle, and the handle is arranged on the second barrel. Outside the machine barrel, the two ends of the baffle are respectively connected with a first rotating shaft and a second rotating shaft, both of the first rotating shaft and the second rotating shaft are rotatably connected with the second machine barrel, and an elastic member is arranged inside the first rotating shaft, One end of the elastic member is connected to the inner wall of the first rotating shaft, the other end of the elastic member is connected to the handle, and the second barrel is provided with a first bar-shaped groove and a second bar-shaped groove perpendicular to the first bar-shaped groove. shaped slot, the first bar-shaped slot and the second bar-shaped slot are both used for clamping the handle.

More preferably, the first feeding device includes a third driving device and the first feeding port, the first feeding box and the first feeding channel communicated in sequence, and the first feeding channel communicates with the first barrel , the first feeding screw is movably arranged in the first feeding box, and the first feeding screw is drivingly connected to the output end of the third driving device.

More preferably, the second feeding device includes a fourth driving device and a second feeding port, a second feeding box, and a second feeding channel communicated in sequence, and the second feeding channel communicates with the second barrel A second feeding screw is movably arranged in the second feeding box, and the second feeding screw is drivingly connected to the output end of the fourth driving device.

More preferably, the inner bottom of the first material inlet is detachably equipped with a first mesh plate, the first mesh plate is provided with a plurality of first through holes, and the outer wall of the first material inlet is fixed with a first pneumatic oscillator.

More preferably, the flights of the first feeding screws have equal pitches and equal depths.

More preferably, the inner bottom of the second material inlet is detachably equipped with a second mesh plate, the second mesh plate is provided with a plurality of second through holes, and the outer wall of the second material inlet is fixed with a second pneumatic oscillator.

More preferably, the flights of the second feeding screws have equal pitches and equal depths.

More preferably, the first extrusion screw includes a first screw part, a second screw part and a third screw part connected in sequence, the threads of the first screw part have equal pitches and equal depths, and the first screw part The threads of the second screw part have equal pitch and gradually smaller depth, the threads of the third screw part have equal pitch and equal depth, and the pitch and depth of the threads of the third screw part are smaller than those of the first screw The pitch and depth of the internal threads.

More preferably, the heating device includes an electromagnetic core and an electromagnetic coil installed in the electromagnetic core, and the outer wall of the first barrel and the outer wall of the second barrel are both wound with an electromagnetic core.

More preferably, the first driving device includes a first driving motor and a first gearbox connected to the output end of the first driving motor, and the output end of the first gearbox is drivingly connected to the first extrusion screw, so The second driving device includes a second driving motor and a second gearbox connected to the output end of the second driving motor, and the output end of the second gearbox is drivingly connected to the second extruding screw.

The beneficial effects of the utility model:

The utility model provides a screw extruder with a double feeding device. When there are multiple raw materials that need to be melted and mixed, the communication valve is opened first, and the handle is manually pulled so that the handle is not stuck in the first strip groove. , then turn the handle 90 degrees to drive the baffle to rotate, and then snap the handle into the second bar-shaped groove. At this time, the baffle no longer blocks the discharge end of the second barrel, and then the different raw materials are fed by the first The feeding device and the second feeding device are put into the screw extruder, and the first extruding screw and the second extruding screw are respectively driven to rotate by the first driving device and the second driving device, and at the same time, the heating device is started to raise the first barrel and the temperature in the second barrel, so that the raw materials are heated and melted, and the second extrusion screw stirs and extrudes the raw materials in the second barrel into the first barrel, mixes with the raw materials in the first barrel, and finally is extruded by the first extruder Extrude the screw to extrude the first machine barrel. The screw extruder is equipped with the first feeding device and the second feeding device, which can separate and melt the raw materials at the same time, then automatically mix them together, and finally carry out the extrusion work, so that the production efficiency can be improved, and the melting effect of the raw materials is better. Well, a connecting valve is set in the second barrel, and the second barrel can be closed when the second barrel is not working, so that the screw extruder is also suitable for the production of single raw material.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Fig. 2 is the right side view of Fig. 1 .

FIG. 3 is a cross-sectional view at AA in FIG. 2 .

Fig. 4 is a structural schematic view of the first strip-shaped groove and the second strip-shaped groove of the present invention.

Fig. 5 is a schematic structural view of the first material inlet of the present invention.

Fig. 6 is a schematic structural view of the second material inlet of the present invention.

Fig. 7 is a schematic structural view of the first extrusion screw of the present invention.

Fig. 8 is a schematic structural diagram of the second extrusion screw of the present invention.

Fig. 9 is a schematic structural view of the first feeding screw of the present invention.

Fig. 10 is a schematic structural view of the second feeding screw of the present invention.

Reference numerals in FIGS. 1 to 10 include:

1-frame, 2-first barrel, 21-first extrusion screw, 211-first screw part, 212-second screw part, 213-third screw part, 3-second barrel, 31- The second extrusion screw, 4-the first driving device, 41-the first driving motor, 42-the first gearbox, 5-the second driving device, 51-the second driving motor, 52-the second gearbox, 6- The first feeding device, 61-the third driving device, 62-the first feeding port, 63-the first feeding box, 64-the first feeding channel, 65-the first feeding screw, 621-the first screen plate, 622-the first through hole, 623-the first pneumatic oscillator, 7-the second feeding device, 71-the fourth driving device, 72-the second feeding port, 73-the second feeding box, 74-the second feeding Material channel, 75-the second feeding screw, 721-the second stencil, 722-the second through hole, 723-the second pneumatic oscillator, 8-heating device, 81-electromagnetic core, 82-electromagnetic coil, 9-communication Valve, 91-baffle plate, 92-handle, 93-first rotating shaft, 94-second rotating shaft, 95-elastic member, 96-first bar-shaped groove, 97-second bar-shaped groove.

Detailed ways

In order to facilitate the understanding of those skilled in the art, the utility model will be further described below in conjunction with the embodiments and accompanying drawings, and the contents mentioned in the implementation modes are not limitations of the utility model. Below in conjunction with accompanying drawing, the utility model is described in detail.

A screw extruder with a double feeding device provided in this embodiment, as shown in Fig. 1 to Fig. 4, Fig. 7 and Fig. 8, includes a frame 1, a first barrel 2, a second barrel 3, a first The driving device 4, the second driving device 5, the first feeding device 6 arranged at the feeding end of the first barrel 2 and the second feeding device 7 arranged at the feeding end of the second barrel 3, the first The machine barrel 2, the second machine barrel 3, the first driving device 4 and the second driving device 5 are all fixed on the frame 1, and a first extruding screw 21 is movably arranged in the first machine barrel 2, and the first extruding screw 21 is movable in the first machine barrel 2. An extruding screw 21 is drivingly connected to the output end of the first driving device 4, and a second extruding screw 31 is movably arranged in the second barrel 3, and the second extruding screw 31 is connected to the output end of the second driving device 5. The output end is driven and connected, and the bottoms of the first barrel 2 and the second barrel 3 are provided with a heating device 8; the discharge end of the second barrel 3 communicates with the first barrel 2, and the second A communication valve 9 is installed in the discharge end of the barrel 3, and the communication valve 9 includes a baffle 91 and a handle 92, the handle 92 is arranged outside the second barrel 3, and the two ends of the baffle 91 are respectively connected with The first rotating shaft 93 and the second rotating shaft 94, both of the first rotating shaft 93 and the second rotating shaft 94 are rotatably connected with the second barrel 3, the first rotating shaft 93 is provided with an elastic member 95, and the elastic member 95 One end is connected to the inner wall of the first rotating shaft 93, and the other end of the elastic member 95 is connected to the handle 92. The second barrel 3 is provided with a first bar-shaped groove 96 and a second bar-shaped groove 96 perpendicular to the first. The bar-shaped slot 97 , the first bar-shaped slot 96 and the second bar-shaped slot 97 are all used for clamping the handle 92 .

Specifically, when there are multiple raw materials that need to be melted and mixed, the connecting valve 9 is first opened, and the handle 92 is manually pulled upwards, and the elastic member 95 is extended so that the handle 92 is not snapped into the first bar-shaped groove 96, and then 90 degrees Turn the handle 92, the handle 92 drives the elastic member 95 to rotate, the elastic member 95 then drives the first rotating shaft 93 to rotate, and finally the baffle plate 91 is rotated 90 degrees, and then the handle 92 is released to make it snap into the second strip groove 97, and the The baffle plate 91 is fixed, and now the baffle plate 91 no longer blocks the discharge end of the second machine barrel 3, and the second machine barrel 3 is opened; then different raw materials are fed by the first feeding device 6 and the second feeding device 7 respectively. Put it into the screw extruder, drive the first extrusion screw 21 and the second extrusion screw 31 to rotate respectively by the first driving device 4 and the second driving device 5, and start the heating device 8 at the same time, and the heating device 8 raises the first extruder barrel 2 and the temperature in the second barrel 3, the raw material is heated and melted, and the second extrusion screw 31 stirs and extrudes the raw material in the second barrel 3 into the first barrel 2, and the raw material in the first barrel 2 The raw materials are mixed and finally extruded from the first barrel 2 by the first extruding screw 21 . The screw extruder is equipped with the first feeding device 6 and the second feeding device 7, which can separate and melt the raw materials at the same time, then automatically mix them together, and finally perform the extrusion work, so that the production efficiency can be improved, and the melting of the raw materials The effect is better, a communication valve 9 is set in the second barrel 3, and the second barrel 3 can be closed when the second barrel 3 is not working, so that the screw extruder is also suitable for the production of single raw materials, that is, increasing The scope of use of screw extruders.

A screw extruder with double feeding devices provided in this embodiment, as shown in Figure 1, the first feeding device 6 includes a third driving device 61 and a first feeding port 62, a first feeding box 63 and a first feeding channel 64, the first feeding channel 64 communicates with the first machine barrel 2, a first feeding screw 65 is movable in the first feeding box 63, and the first feeding screw 65 It is drive-connected to the output of the third drive device 61 .

Specifically, the staff sends raw materials into the first material inlet 62, and at the same time starts the third driving device 61, the third driving device 61 is a motor, and the third driving device 61 drives the first feeding screw 65 in the first feeding box 63 Rotate to make the first feeding screw 65 convey the raw material at a constant speed, the raw material enters the first barrel 2 through the first feeding channel 64, and the first feeding screw is added between the first feeding port 62 and the first barrel 2 65, it is convenient to control the feeding amount of raw materials.

A screw extruder with double feeding devices provided in this embodiment, as shown in Fig. 1 and Fig. 2, the second feeding device 7 includes a fourth driving device 71 and a second feeding port 72 connected in sequence, The second feeding box 73 and the second feeding channel 74, the second feeding channel 74 communicates with the second machine barrel 3, the second feeding screw 75 is movably arranged in the second feeding box 73, and the second feeding screw 75 is movable. The feeding screw 75 is drivingly connected to the output end of the fourth driving device 71 .

Specifically, the staff sends raw materials into the second material inlet 72, and simultaneously starts the fourth driving device 71, the fourth driving device 71 is a motor, and the fourth driving device 71 drives the second feeding screw 75 in the second feeding box 73 Rotate to make the second feeding screw 75 convey the raw material at a constant speed, the raw material enters the second barrel 3 through the second feeding channel 74, and a second feeding screw is added between the second feeding port 72 and the second barrel 3 75, it is convenient to control the feeding amount of raw materials.

A screw extruder with double feeding devices provided in this embodiment, as shown in Figure 5, the bottom of the first feeding port 62 is detachably equipped with a first mesh plate 621, the first mesh plate 621 Several first through holes 622 are provided, and a first pneumatic vibrator 623 is fixed on the outer wall of the first material inlet 62 .

Specifically, a first net plate 621 is set, and a first through hole 622 is set on the first net plate 621. The raw material enters the first feeding box 63 through the first through hole 622, and the first through hole 622 can filter out the raw material at the same time. When adding raw materials, start the first pneumatic oscillator 623 to prevent the raw materials from adhering to the inner wall of the first feeding port 62. This structure can slow down the speed at which raw materials are fed into the first feeding box 63. Avoid adding too much raw material.

This embodiment provides a screw extruder with double feeding devices, as shown in Fig. 9, the flights of the first feeding screw 65 have equal pitches and equal depths.

Specifically, the first feeding screws 65 having equal distances and equal depths are convenient for controlling the conveying amount of materials.

A screw extruder with double feeding devices provided in this embodiment, as shown in Figure 6, the second net plate 721 is detachably installed on the inner bottom of the second feed port 72, and the second net plate 721 Several second through holes 722 are provided, and a second pneumatic vibrator 723 is fixed on the outer wall of the second material inlet 72 .

Specifically, a second net plate 721 is set, and a second through hole 722 is set on the second net plate 721. The raw material enters the second feeding box 73 through the second through hole 722, and the second through hole 722 can filter out the raw material at the same time. When adding raw materials, start the second pneumatic oscillator 723 to prevent the raw materials from adhering to the inner wall of the second feeding port 72. This structure can slow down the speed at which raw materials are fed into the second feeding box 73. Avoid adding too much raw material.

The present embodiment provides a screw extruder with double feeding devices, as shown in Fig. 10 , the flights of the second feeding screw 75 have equal pitches and equal depths.

Specifically, the equal distance and equal depth of the second feeding screw 75 facilitates the control of the conveying amount of the material.

A screw extruder with a double feeding device provided in this embodiment, as shown in Figure 7, the first extrusion screw 21 includes a first screw part 211, a second screw part 212 and a third screw part connected in sequence 213, the threads of the first screw part 211 have equal pitches and equal depths, the threads of the second screw part 212 have equal pitches and gradually decrease in depth, and the threads of the third screw part 213 have Equal pitch and equal depth, the pitch and depth of the thread of the third screw part 213 are smaller than the pitch and depth of the thread of the first screw part 211 .

Specifically, the first extrusion screw 21 is divided into three parts, and the pitch and depth of the threads of each part are different. The first screw part 211 is a feeding section, also called a conveying section, which feeds the material into the barrel For forward transmission, the pitch of the screw is equal, and the depth of the screw is also equal, that is, the screw is equidistant and equal in depth; the second screw part 212 is the compression section, also called the migration section, and the screw in this section is equally spaced and not equal in depth. At this time, the material The heat gradually melts, and the physical state changes. The second screw part 212 is mainly to adapt to the change of the physical state of the material, and the volume of the screw cavity gradually becomes smaller; the third screw part 213 is a homogenization section, also called a metering section. The screw rods of the first screw rod portion 211 are equidistant and equal in depth, but the screw groove depth is shallower than that of the feeding section, which is convenient for controlling the amount of extruded material.

A screw extruder with double feeding device provided in this embodiment, as shown in Figure 1 and Figure 2, the heating device 8 includes an electromagnetic core 81 and an electromagnetic coil 82 installed in the electromagnetic core 81, the first An electromagnetic core 81 is wound around the outer wall of the barrel 2 and the outer wall of the second barrel 3 .

Specifically, after electrification, the electromagnetic coil 82 of the heating device 8 generates eddy currents in the first machine barrel 2 and the second machine barrel 3 through electromagnetic induction, so that the first machine barrel 2 and the second machine barrel 3 generate heat, thereby To heat the materials in the first barrel 2 and the second barrel 3, the heating device 8 has a simple structure, can be heated as long as it is powered on, and is easy to use.

A screw extruder with double feeding device provided in this embodiment, as shown in Fig. 1 and Fig. 2, the first driving device 4 includes a first driving motor 41 and a motor connected to the output end of the first driving motor 41 The first gearbox 42, the output end of the first gearbox 42 is drivingly connected to the first extrusion screw 21, and the second driving device 5 includes a second driving motor 51 and is connected to the output end of the second driving motor 51. The second gearbox 52, the output end of the second gearbox 52 is drivingly connected with the second extrusion screw 31.

Specifically, start the first drive motor 41 and the second drive motor 51, and the staff can adjust the rotation speed through the second gearbox 52412, and then control the rotation speed of the first extrusion screw 21 and the second extrusion screw 31, so as to facilitate the control and adjustment of the second extrusion screw. The delivery rate of the raw material by the first extrusion screw 21 and the second extrusion screw 31.

The above is only the preferred embodiment of the utility model, and does not limit the utility model in any form. Although the utility model is disclosed as above with the preferred embodiment, it is not used to limit the utility model. Anyone who is familiar with the utility model Professional technicians, without departing from the scope of the technical solution of the present utility model, should use the technical content disclosed above to make some changes or modify equivalent embodiments with equivalent changes, but if they do not deviate from the technical solution of the present utility model, according to this The utility model technology refers to any simple modification, equivalent change and modification made to the above embodiments, which all belong to the scope of the utility model technical solution.

Claims (10)

1. a kind of screw extruder of the double feeding devices of band, it is characterised in that: including rack, the first machine barrel, the second machine barrel, first Driving device, the second driving device, set on the first machine barrel feed end the first feeding device and set on second machine barrel into Expect second feeding device at end, first machine barrel, the second machine barrel, first driving device and the second driving device are both secured to In rack, it is movably set with the first extrusion screw rod in first machine barrel, first extrusion screw rod and first driving device Output end is drivingly connected, and the second extrusion screw rod is movably set in second machine barrel, and second extrusion screw rod and second drive The output end of dynamic device is drivingly connected, and the bottom of first machine barrel and the second machine barrel is provided with heating device；

The discharge end of second machine barrel is connected to the first machine barrel, is installed with communicating valve in the discharge end of second machine barrel, institute Stating communicating valve includes baffle and knob, and the knob is set to outside the second machine barrel, and the baffle both ends are connected separately with first turn Axis and the second shaft, the first rotating shaft and the second shaft are rotatablely connected with the second machine barrel, and bullet is equipped in the first rotating shaft Property part, the inner wall of one end of the elastic component and first rotating shaft connects, and the other end and knob of elastic component connect, second machine Cylinder be externally provided with the first strip groove and with vertically disposed second strip groove of the first strip groove, first strip groove and the second bar shaped Slot is used to clamping knob.

2. the screw extruder of the double feeding devices of a kind of band according to claim 1, it is characterised in that: the first charging dress It sets including third driving device and the first feeding inlet, the first box for feeding odd and the first feeding channel that are sequentially communicated, described first Feeding channel is connected to the first machine barrel, and the first feeding spiro rod, the first feeding spiral shell are movably set in first box for feeding odd Bar and the output end of third driving device are drivingly connected.

3. the screw extruder of the double feeding devices of a kind of band according to claim 1, it is characterised in that: the second charging dress It sets including fourth drive device and the second feeding inlet, the second box for feeding odd and the second feeding channel that are sequentially communicated, described second Feeding channel is connected to the second machine barrel, and the second feeding spiro rod, the second feeding spiral shell are movably set in second box for feeding odd Bar and the output end of fourth drive device are drivingly connected.

4. the screw extruder of the double feeding devices of a kind of band according to claim 2, it is characterised in that: first feeding inlet Interior bottom is detachably installed with the first web plate, and first web plate is equipped with several first through hole, the outer wall of first feeding inlet It is fixed with the first pneumatic oscillator.

5. the screw extruder of the double feeding devices of a kind of band according to claim 2, it is characterised in that: the first feeding spiral shell The screw thread of bar has equal screw pitch and equal depth.

6. the screw extruder of the double feeding devices of a kind of band according to claim 3, it is characterised in that: second feeding inlet Interior bottom is detachably installed with the second web plate, and second web plate is equipped with several second through-holes, the outer wall of second feeding inlet It is fixed with the second pneumatic oscillator.

7. the screw extruder of the double feeding devices of a kind of band according to claim 3, it is characterised in that: the second feeding spiral shell The screw thread of bar has equal screw pitch and equal depth.

8. the screw extruder of the double feeding devices of a kind of band according to claim 1, it is characterised in that: described first squeezes out spiral shell Bar includes sequentially connected first threaded shank, the second threaded shank and third threaded shank, and the screw thread of first threaded shank has The screw thread of equal screw pitch and equal depth, second threaded shank has equal screw pitch and gradually smaller depth, The screw thread of the third threaded shank has equal screw pitch and equal depth, the screw pitch and depth of the screw thread of the third threaded shank Degree is respectively less than the screw pitch and depth of the screw thread of the first threaded shank.

9. the screw extruder of the double feeding devices of a kind of band according to claim 1, it is characterised in that: the heating device packet The electromagnetic coil for including electromagnet core and being installed in electromagnet core, the first machine barrel outer wall and the second machine barrel outer wall are arranged with electricity Magnetic core.

10. the screw extruder of the double feeding devices of a kind of band according to claim 1, it is characterised in that: first driving Device includes the first driving motor and the first gearbox for connecting with the output end of the first driving motor, first gearbox Output end and the first extrusion screw rod be drivingly connected, second driving device include the second driving motor and with second driving Second gearbox of the output end connection of motor, the output end of second gearbox and the second extrusion screw rod are drivingly connected.