Super specific gravity granule extruding machine
Technical Field
The invention relates to the technical field of extruders, in particular to a super-specific gravity particle extrusion machine.
Background
The PVC board containing quartz sand is a high-strength PVC board. The production process of the PVC sheet material containing quartz sand mainly comprises the following steps: mixing, extruding, shaping and cutting. In the extrusion stage, an extruder is generally used to convey the uniformly mixed PVC powder and quartz sand to a shaping mold. The structure of the extruder currently used is: comprising the following steps: the machine frame is provided with a screw barrel, an extrusion screw is rotatably arranged in the screw barrel, a feeding flow channel is formed between the extrusion screw and the screw barrel, the extrusion screw comprises an extrusion screw feeding section, an extrusion screw fusing section, an extrusion screw conveying section and an extrusion screw compressing section which are sequentially arranged along the axial direction, a feeding port communicated with the feeding flow channel is arranged at the feeding end of the screw barrel, a converging core is butted at the discharging end of the screw barrel, and a converging channel communicated with the feeding flow channel is axially communicated in the converging core. The above-mentioned extruder has the disadvantages: because the hardness of quartz sand is high, the screw barrel, the screw rod and the converging core are extremely easy to be worn by the quartz sand in the material extrusion process, so that the service lives of the screw barrel, the screw rod and the converging core are short, the screw barrel, the screw rod and the converging core are required to be frequently replaced in the production process, and the production and use cost of enterprises is greatly increased.
Disclosure of Invention
The invention aims to provide a super-specific gravity discharge particle extruder with long service life.
In order to achieve the above purpose, the invention adopts the following technical scheme: the super-specific gravity particle extruding machine comprises: the machine frame is provided with a screw barrel in the machine frame, an extrusion screw is rotatably arranged in the screw barrel, a feeding flow passage is formed between the extrusion screw and the screw barrel, the extrusion screw comprises an extrusion screw feeding section, an extrusion screw fusing section, an extrusion screw conveying section and an extrusion screw compressing section which are sequentially arranged along the axial direction, a feeding port communicated with the feeding flow passage is arranged at the feeding end of the screw barrel, a converging core is butted at the discharging end of the screw barrel, a converging passage communicated with the feeding flow passage is axially communicated with the converging core, a double alloy layer is arranged on the outer wall of the extrusion screw and the inner wall of the screw barrel in matched contact with the extrusion screw conveying section and the extrusion screw compressing section, and a wear-resisting chromium layer is arranged on the inner wall of the converging passage of the converging core.
Further, the aforementioned super-gravity discharge pellet extruder, wherein: a transverse feeding cylinder is arranged on the frame above the screw cylinder, a feeding screw rod is rotatably arranged in the transverse feeding cylinder, a feeding port is arranged at the top of the feeding end of the transverse feeding cylinder, a discharging port is arranged at the bottom of the discharging end of the transverse feeding cylinder, and the discharging port is communicated with the feeding port of the screw cylinder through a feeding pipe.
Further, the aforementioned super-gravity discharge pellet extruder, wherein: a feeding hopper is arranged at the feeding hole of the transverse feeding cylinder.
Through implementation of the technical scheme, the invention has the beneficial effects that: through set up the double alloy layer on extruding the outer wall of screw rod, on the screw shell inner wall that is in cooperation contact with extrusion screw rod conveying section and extrusion screw rod compression section to and set up the antifriction chromium layer on the inner wall of the confluence passageway of confluence core, can effectively prevent extrusion screw rod, screw shell and confluence core and damage by quartz sand grinding in extrusion process, and then effectively prolonged the life of extruder, reduced enterprise's manufacturing use cost.
Drawings
Fig. 1 is a schematic structural view of a super gravity discharge pellet extruder according to the present invention.
Fig. 2 is an enlarged schematic view of the H site shown in fig. 1.
Detailed Description
The invention will be further described with reference to the drawings and the specific examples.
As shown in fig. 1 and 2, the super-gravity discharge particle extruder comprises: the device comprises a frame 1, wherein a screw barrel 2 is arranged on the frame 1, an extrusion screw 3 is rotatably arranged in the screw barrel 2, a feeding flow channel 4 is formed between the extrusion screw 3 and the screw barrel 2, the extrusion screw 3 comprises an extrusion screw feeding section a, an extrusion screw fusing section b, an extrusion screw conveying section c and an extrusion screw compressing section d which are sequentially arranged along the axial direction, a feeding port communicated with the feeding flow channel 4 is arranged at the feeding end of the screw barrel 2, a converging core 5 is abutted at the discharging end of the screw barrel 2, a converging channel 6 communicated with the feeding flow channel 4 is axially penetrated in the converging core 5, a double alloy layer 7 is arranged on the outer wall of the extrusion screw 3 and the inner wall of the screw barrel 2 which is in matched contact with the extrusion screw conveying section c and the extrusion screw compressing section d, and a wear-resistant chromium layer 8 is arranged on the inner wall of the converging channel of the converging core 5; in the embodiment, a transverse feeding cylinder 9 is arranged on a frame 1 above a screw cylinder 2, a feeding screw 10 is rotatably arranged in the transverse feeding cylinder 9, a feeding port is arranged at the top of a feeding end of the transverse feeding cylinder 9, a feeding hopper 11 is arranged at the feeding port of the transverse feeding cylinder 9, a discharging port is arranged at the bottom of a discharging end of the transverse feeding cylinder 9, and the discharging port is communicated with the feeding port of the screw cylinder 2 through a feeding pipe 12, so that a mixture of quartz sand and PVC powder can enter a feeding runner 4 more orderly and controllably;
The working principle of the invention is as follows:
The quartz sand and PVC powder which are uniformly mixed are firstly introduced into the transverse feeding cylinder 9 from the feeding hopper 11, the mixture which enters the transverse feeding cylinder 9 enters the feeding pipe 12 under the conveying of the feeding screw rod 10, then enters the feeding flow channel 4 through the feeding pipe 12, then the mixture in the feeding flow channel 4 is conveyed to the confluence channel 6 of the confluence core 5 backwards through the rotation of the extrusion screw rod 3, and then enters the die for post shaping from the confluence channel 6.