CN206884121U - The feed arrangement of single screw extrusion machine - Google Patents

Abstract

The utility model discloses a feeding device of a single-screw extruder, which comprises a body, a hopper, and a material barrel connected with the hopper. The body is provided with a collection part and sucks dust and sundries in the hopper into the collection part. The dust collection device includes a suction pipe connected to the hopper, and the inlet end of the suction pipe is provided with a filter screen to prevent raw materials from entering the suction pipe, which can effectively remove the dust carried by the raw materials in the hopper And sundries are taken away to ensure the cleanliness of raw material feeding, thereby improving the quality of products extruded by the extruder.

Description

Feed device for single screw extruder

technical field

The utility model relates to an extrusion molding process of plastic products, in particular to a feeding device of a single-screw extruder.

Background technique

The single-screw extruder is mainly used to extrude thermoplastics such as soft and hard polyvinyl chloride and polyethylene, and can process a variety of plastic products, such as blown film, extruded tubes, pressing plates, and ribbons.

At present, in the prior art, in a Chinese patent document with the authorized announcement number CN203093000U, a kind of extruder is recorded. Different raw materials are evenly mixed with granular raw materials. When the extruder is running, the driving device drives the extrusion screw to rotate slowly through the transmission device, and the granular raw materials in the feeding hopper are introduced into the chamber, and the chamber is heated by various heaters. The granular raw material gradually melts into a fluid state as it moves toward the module.

Put the raw materials into the hopper, due to the uneven quality of the raw materials, some of the raw materials will contain dust and sundries, if these sundries and dust are not cleaned out in time, they will easily melt together with the raw materials to form a fluid, and finally injection molded into plastic Products, which greatly affect the quality of plastic products.

Utility model content

The purpose of this utility model is to provide a feeding device for a single-screw extruder, which can effectively take away the dust and sundries contained in the raw materials in the hopper, ensure the cleanliness of the raw material feeding, and thus improve the extrusion rate of the extruder. The quality of the molded product.

The above-mentioned technical purpose of the utility model is achieved through the following technical solutions: a feeding device of a single-screw extruder, including a fuselage, a hopper, and a barrel connected with the hopper, and a collection part is arranged on the fuselage And a dust suction device for sucking dust and sundries in the hopper into the collection part, the dust suction device includes a dust suction pipe connected with the hopper, and the inlet end of the dust suction pipe is provided with a filter screen to prevent raw materials from entering the dust suction pipe.

By adopting the above technical solution, the dust suction device sucks the dust and debris in the hopper into the collection part, and collects the debris and dust through the collection part, and the filter screen allows the debris and dust to pass through and enter the dust suction pipe. It can prevent the raw materials from entering the suction pipe to ensure that the raw materials will not be lost. The utility model can effectively take away the dust and sundries carried by the raw materials in the hopper to ensure the cleanliness of the raw materials, thereby improving the products extruded from the raw materials. quality.

Further, the dust suction device further includes a dust suction fan connected with the dust suction pipe, and the dust suction fan is arranged on the machine body.

By adopting the above-mentioned technical scheme, the dust suction fan works, and the dust and sundries are sucked away through the dust suction pipe. Clutter works better.

Further, the collection part includes a collection box with opposite sides respectively connected with the dust suction pipe and the dust suction fan, and the collection box is provided with a gauze layer to prevent dust and sundries from entering into the dust suction fan.

By adopting the above technical scheme, the dust suction fan enters the dust and sundries into the collection box through the suction pipe, and the gauze layer in the collection box can allow the air to pass through, and the dust and sundries cannot pass through. Under the obstruction of the gauze layer, The dust and sundries are kept in the collection box, thereby preventing the dust and sundries from entering the dust collection fan, and ensuring the safety and stability of the dust collection fan.

Further, the hopper is connected with a hot air mechanism for blowing hot air into the hopper.

By adopting the above technical scheme, the hot air mechanism blows hot air into the hopper, which can preheat the raw materials in the hopper, facilitate the rapid heating and melting of raw materials in the hopper, and at the same time play a role in drying the raw materials in the hopper Function, to ensure the stability and quality of the products produced by the extrusion process.

Further, the hot gas mechanism includes a hot gas pipe connected to the hopper and a hot gas source connected to the hot gas pipe.

By adopting the above technical scheme, the hot air source works and blows hot air into the hopper through the hot air pipe. The setting of the hot air source and the hot air pipe can stably deliver the hot air to the hopper, which can better preheat the raw materials in the hopper. drying effect.

Further, the nozzle of the hot gas pipe is arranged symmetrically with the nozzle of the dust suction pipe with respect to the axis of the hopper.

By adopting the above technical scheme, the mouth of the hot gas pipe is opposite to the mouth of the dust suction pipe, so that the hot air entering the hopper can flow towards the mouth of the dust suction pipe, thereby blowing dust and sundries to the dust suction pipe , which is conducive to the accurate and efficient suction of the dust and debris in the hopper by the vacuum tube.

Further, the hopper is provided with a stirring mechanism for stirring the raw materials in the hopper.

By adopting the above technical solution, the stirring mechanism stirs the raw materials in the hopper, so that the hot air in the hopper can flow up, down and around more easily, and the heating and drying efficiency of the hot air is improved.

Further, the stirring mechanism includes a stirring paddle arranged in the hopper, and a stirring motor driving the stirring paddle to rotate.

By adopting the above technical scheme, the stirring paddle stirs the raw materials in the hopper, and the setting of the stirring motor realizes the function of automatically stirring the raw materials and improves the degree of automation of the utility model.

Further, the hopper is provided with a material inlet and a material cover covering the material inlet, and the material cover is provided with a feeding mechanism for automatically feeding materials into the hopper.

By adopting the above technical scheme, the material cover is placed on the feed port, reducing dust and foreign matters falling into the hopper, and the feed mechanism automatically feeds the raw materials into the hopper, thereby realizing the automatic feeding function of the utility model.

Further, the feeding mechanism includes a feeding cylinder communicated with the hopper, and a feeding fan that pumps the raw materials into the hopper through the feeding cylinder.

By adopting the above technical scheme, the feeding fan pumps the raw materials into the hopper through the feeding barrel, and the fan pumping method can stably and continuously feed materials into the hopper, which facilitates the continuous extrusion of plastic products by the extruder .

In summary, the utility model has the following beneficial effects:

1. The utility model can remove the dust and sundries in the raw materials, realize the clean feeding of the extruder, and ensure the quality of the products extruded by the extruder;

2. Adopting the way of fan pumping, it can stably and continuously feed materials into the hopper, which is convenient for the continuous extrusion of plastic products by the extruder.

Description of drawings

Fig. 1 is the overall structure schematic diagram of the present embodiment;

Fig. 2 is a schematic cross-sectional view of the hopper in this embodiment.

In the figure: 1, fuselage; 2, barrel; 3, hopper; 301, feed inlet; 4, transmission mechanism; 401, transmission motor; 402, reduction box; 5, vacuum device; 501, vacuum tube; 502, dust suction fan; 6, collection part; 7, feeding mechanism; 701, feeding fan; 702, feeding cylinder; 8, stirring mechanism; 801, stirring motor; 802, stirring paddle; 9, material cover; 10, Gauze layer; 11, hot air mechanism; 1101, hot air source; 1102, hot air pipe; 12, filter screen.

detailed description

Below in conjunction with accompanying drawing, the utility model is described in further detail.

The specific embodiment is only an explanation of the utility model, and it is not a limitation of the utility model. Those skilled in the art can make modifications to the embodiment without creative contribution as required after reading this description, but as long as the utility model All claims are protected by patent law.

Embodiment: a feeding device of a single-screw extruder, as shown in Figure 1, includes a body 1, a hopper 3, and a barrel 2 connected to the hopper 3, and the hopper 3 and the barrel 2 are installed on the body 1 , the barrel 2 is provided with a screw (not shown) extending along the length of the barrel 2, the screw is rotatably connected to the body 1, and the body 1 is provided with a transmission mechanism 4 for driving the screw to work, and the transmission mechanism 4 includes a transmission motor 401 and the reduction box 402, the screw and the transmission motor 401 are connected through the reduction box 402, the transmission motor 401 works to drive the screw to rotate, thereby transporting the raw material in the barrel 2 from one end to the other.

As shown in FIG. 2 , the machine body 1 is provided with a collecting portion 6 and a dust suction device 5 for sucking dust and sundries in the hopper 3 into the collecting portion 6 . The dust collection device 5 includes a dust suction pipe 501 communicating with the hopper 3 and a dust collection fan 502 , and the dust collection fan 502 is arranged on the machine body 1 .

The collection part 6 includes a collection box, and the left and right sides of the collection box communicate with one end of the dust suction pipe 501 and the dust suction fan 502 respectively, and the dust suction fan 502 communicates with the dust suction pipe 501 through the collection box. A gauze layer 10 is arranged in the collection box, and the gauze layer 10 includes gauze pieces parallel to the left and right inner walls of the collection box. The gauze pieces can allow air to pass through, and can block dust and sundries from passing through. Between the dust fan 502, dust and sundries can be prevented from entering the dust suction fan 502.

The end of the dust suction pipe 501 connected to the hopper 3 is the inlet port, and the inlet end is provided with a filter screen 12 that stops the raw material from entering the dust suction pipe 501. The raw material is granular, and its particle diameter is greater than the diameter of the upper hole of the filter screen 12. Therefore, Air can enter the dust suction pipe 501 through the mesh, and the raw material cannot pass through the filter screen 12 .

As shown in FIG. 2 , the hopper 3 is connected with a hot air mechanism 11 , and the hot air mechanism 11 is used to blow hot air into the hopper 3 . The hot air mechanism 11 includes a hot air pipe 1102 communicated with the hopper 3 and a hot air source 1101 communicated with the hot air pipe 1102. In this embodiment, the hot air source 1101 is a hot air blower, and the hot air blower blows hot air in the hopper 3 through the hot air pipe 1102.

The mouth of one end of the hot air pipe 1102 connected to the hopper 3 and the mouth of the end of the suction pipe 501 connected to the hopper 3 are symmetrical about the axis of the hopper 3, so that the hot air blown into the hopper 3 by the hot air pipe 1102 flows to the pipe of the dust suction pipe 501. The nozzle flows, thereby blowing dust and debris to flow to the nozzle of the suction pipe 501.

As shown in FIG. 2 , the hopper 3 is provided with a stirring mechanism 8 for stirring the raw materials in the hopper 3 . Stirring mechanism 8 comprises the stirring paddle 802 that is arranged in the hopper 3, the stirring motor 801 that drives stirring paddle 802 rotations, the top of hopper 3 is provided with feed inlet 301 and the material cover 9 that covers feed inlet 301, and paddle 802 It is rotatably connected with the material cover 9, and the axis of the stirring paddle 802 is parallel to the axis of the hopper 3. The stirring motor 801 works to drive the stirring paddle 802 to rotate, and the raw materials in the hopper 3 are stirred by the stirring paddle 802.

The material cover 9 is provided with a feed mechanism 7 that feeds automatically in the hopper 3. The feed mechanism 7 includes a feed cylinder 702 and a feed fan 701. The feed cylinder 702 is arranged on the material cover 9 and communicates with the inside of the hopper 3. The feeding fan 701 is connected to the feeding barrel 2 , and the feeding fan 701 works to pump the raw materials into the hopper 3 through the feeding barrel 702 .

When the utility model is used, the feeding fan works, and the raw materials are pumped into the hopper 3 through the feeding cylinder 702, the stirring paddle 802 stirs the raw materials entering the hopper 3, and the hot air source 1101 blows heat into the hopper 3 through the hot air pipe 1102. The air flow preheats and dries the raw materials in the hopper 3. At the same time, the dust suction fan 502 works to suck the sundries and dust in the hopper 3 into the collection part 6 through the dust suction pipe 501, and the collection part 6 sucks the dust and waste When the material is collected, the transmission mechanism 4 works to drive the screw to rotate, thereby pushing the raw material in the hopper 3 to the other end of the barrel 2.

Claims (10)

1. a feeding device of a single-screw extruder, comprising a fuselage (1), a hopper (3), a barrel (2) communicated with the hopper (3), characterized in that: the fuselage (1) A collection part (6) and a dust suction device (5) for sucking dust and debris in the hopper (3) into the collection part (6) are arranged on the top, and the dust suction device (5) includes a A dust suction pipe (501), the inlet end of the dust suction pipe (501) is provided with a filter screen (12) to prevent raw materials from entering the dust suction pipe (501). 2. The feeding device of the single-screw extruder according to claim 1, characterized in that: the dust suction device (5) also includes a dust suction blower (502) communicated with the dust suction pipe (501), the The dust suction fan (502) is arranged on the fuselage (1). 3. The feeding device of the single-screw extruder according to claim 2, characterized in that: the collection part (6) includes opposite sides connected with the dust suction pipe (501) and the dust suction fan (502) respectively. A collection box, which is provided with a gauze layer (10) to prevent dust and sundries from entering the dust suction fan (502). 4. The feeding device of a single-screw extruder according to claim 1, characterized in that: said hopper (3) is connected with a hot air mechanism (11) for blowing hot air into the hopper (3). 5. The feeding device of the single-screw extruder according to claim 4, characterized in that: the hot gas mechanism (11) includes a hot gas pipe (1102) communicated with the hopper (3) and a hot gas pipe (1102) Connected hot gas source (1101). 6. The feeding device of the single-screw extruder according to claim 5, characterized in that: the mouth of the hot gas pipe (1102) and the mouth of the dust suction pipe (501) are in relation to the hopper (3) The axes are set symmetrically. 7. The feeding device of the single-screw extruder according to claim 1, characterized in that: the hopper (3) is provided with a stirring mechanism (8) for stirring the raw materials in the hopper (3). 8. The feeding device of the single-screw extruder according to claim 7, characterized in that: the stirring mechanism (8) comprises a stirring paddle (802) arranged in the hopper (3), a driving paddle (802 ) the stirring motor (801) of rotation. 9. The feeding device of the single-screw extruder according to claim 1, characterized in that: the hopper (3) is provided with a feed port (301) and a material cover covering the feed port (301) (9), the material cover (9) is provided with a feeding mechanism (7) that automatically feeds into the hopper (3). 10. The feeding device of the single-screw extruder according to claim 9, characterized in that: the feeding mechanism (7) comprises a feeding barrel (702) communicated with the hopper (3), through which (702) Raw materials are pumped to the feeding fan (701) in the hopper (3).