CN211138067U

CN211138067U - PVC single screw extruder

Info

Publication number: CN211138067U
Application number: CN201921221316.8U
Authority: CN
Inventors: 刘华; 黄金彪
Original assignee: Huangshi Huayi Environmental Protection Technology Co ltd
Current assignee: Huangshi Huayi Environmental Protection Technology Co ltd
Priority date: 2019-07-30
Filing date: 2019-07-30
Publication date: 2020-07-31
Anticipated expiration: 2029-07-30

Abstract

The utility model discloses a PVC single screw rod extruding machine, include: the device comprises an extrusion head, a sleeve, a screw rod, a charging hopper, a motor and an exhaust tube, wherein the screw rod is coaxially arranged in the sleeve; the extrusion head is arranged at one end of the sleeve; the charging hopper is communicated with the other end of the sleeve; the motor drives the screw to rotate relative to the sleeve; the middle part of the sleeve is provided with a negative pressure hole communicated with the inner cavity of the sleeve; the exhaust tube is communicated with the negative pressure hole, one end of the exhaust tube in the PVC single-screw extruder is communicated with the inner cavity of the sleeve through the negative pressure hole, and the exhaust tube is used for exhausting gas in the plastic raw material, so that the gas is prevented from being detained in a product to form bubbles, and the quality of the product is improved.

Description

PVC single screw extruder

Technical Field

The utility model relates to a extruding machine technical field, concretely relates to PVC single screw rod extruding machine.

Background

At present, spiral extruding machine is including extruding head, sleeve pipe, screw rod, loading hopper and motor, place in the screw rod is coaxial the sleeve pipe, extrude the head set up in sheathed tube one end, the loading hopper with sheathed tube other end intercommunication, motor drive the screw rod is relative the sleeve pipe rotates, and the plastic raw materials in the loading hopper can be carried to extruding the head to the pivoted screw rod to extrude into the product.

Because the sleeve pipe is a sealed environment, gas in the plastic raw material can not be discharged in the actual production process, so that the gas can be remained in the product to form bubbles, thereby reducing the quality of the product

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome above-mentioned technique not enough, provide a PVC single screw rod extruding machine, the sleeve pipe of solving among the prior art is sealed environment, and gaseous can be stayed the technical problem who forms the bubble in the product.

In order to achieve the technical purpose, the technical scheme of the utility model provide a PVC single screw rod extruding machine, include: the device comprises an extrusion head, a sleeve, a screw rod, a charging hopper, a motor and an exhaust tube, wherein the screw rod is coaxially arranged in the sleeve; the extrusion head is arranged at one end of the sleeve; the charging hopper is communicated with the other end of the sleeve; the motor drives the screw to rotate relative to the sleeve; the middle part of the sleeve is provided with a negative pressure hole communicated with the inner cavity of the sleeve; the air exhaust pipe is communicated with the negative pressure hole.

Compared with the prior art, the beneficial effects of the utility model include: one end of the exhaust tube in the PVC single-screw extruder is communicated with the inner cavity of the sleeve through the negative pressure hole, and the exhaust tube is used for exhausting gas in the plastic raw material, so that the gas is prevented from being detained in a product to form bubbles, and the quality of the product is improved.

Drawings

FIG. 1 is a schematic structural diagram of one embodiment of the PVC single screw extruder provided by the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to FIG. 1, this example provides a PVC single screw extruder comprising: the device comprises an extrusion head 1, a sleeve 2, a screw 3, a charging hopper 4, a motor 5 and an exhaust tube 6.

The screw rod 3 is coaxially arranged in the sleeve 2, and when the screw rod 3 rotates in a single direction, the plastic raw material in the sleeve 2 can be driven to move in a single direction.

The extrusion head 1 is arranged at one end of the sleeve 2, and a user can replace different extrusion heads 1 according to different products, specifically, an internal thread is arranged at one end of the extrusion head 1 communicated with the sleeve 2, and an external thread connected with the internal thread is arranged on the sleeve 2, so that the extrusion heads 1 can be detached and replaced conveniently.

Hopper 4 with the other end intercommunication of sleeve pipe 2, it is specific hopper 4 with the charge door intercommunication of seting up on the outer wall of sleeve pipe 2, hopper 4 with sleeve pipe 2 welded fastening.

The motor 5 drives the screw rod 3 to rotate relative to the sleeve 2, and specifically, a driving shaft of the motor 5 is coaxially and fixedly connected with one end, far away from the extrusion head 1, of the screw rod 3.

The middle part of the sleeve 2 is provided with a negative pressure hole communicated with the inner cavity of the sleeve, the exhaust tube 6 is communicated with the negative pressure hole, and the exhaust tube 6 is used for exhausting gas in the plastic raw material, so that the gas is prevented from being detained in a product to form bubbles, and the quality of the product is improved.

The embodiment further provides a preferable implementation manner, the screw rod 3 includes a screw mandrel 31, a first helical blade 32 and a second helical blade 33, the first helical blade 32 is disposed on the outer peripheral surface of the screw mandrel 31 near the end of the extrusion head 1, the second helical blade 33 is disposed on the outer peripheral surface of the screw mandrel 31 near the end of the charging hopper 4, the inclination angle between the first helical blade 32 and the screw mandrel 31 is greater than the inclination angle between the second helical blade 33 and the screw mandrel 31, so as to ensure that the movement speed of the plastic material near the end of the extrusion head 1 in the sleeve 2 is greater than the movement speed of the plastic material near the end of the charging hopper 4 in the sleeve 2, the plastic material near the end of the extrusion head 1 pulls the plastic material near the end of the charging hopper 4 to move, the plastic raw materials are driven by the screw rod 3 to be conveyed to the extrusion head 1 from the feeding hopper 4, so that the plastic raw materials in the sleeve 2 are integrated and are not broken, the viscosity of the plastic raw materials is high, the rubber materials are further ensured not to be discharged from the negative pressure hole, and the negative pressure hole can only discharge gas in the plastic raw materials.

When the heating device 7 is an electric heating wire, the electric heating wire is attached to the outer peripheral surface of the sleeve 2, and an insulating layer is arranged outside the electric heating wire.

The working principle is as follows: one end of the exhaust tube 6 in the PVC single-screw extruder is communicated with the inner cavity of the sleeve 2 through the negative pressure hole, and the exhaust tube 6 is used for exhausting gas in the plastic raw material, so that the gas is prevented from being detained in a product to form bubbles, and the quality of the product is improved.

The above description of the present invention does not limit the scope of the present invention. Any other corresponding changes and modifications made according to the technical idea of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A PVC single screw extruder comprising: the device comprises an extrusion head, a sleeve, a screw rod, a charging hopper, a motor and an exhaust tube, wherein the screw rod is coaxially arranged in the sleeve; the extrusion head is arranged at one end of the sleeve; the charging hopper is communicated with the other end of the sleeve; the motor drives the screw to rotate relative to the sleeve; the middle part of the sleeve is provided with a negative pressure hole communicated with the inner cavity of the sleeve; the air exhaust pipe is communicated with the negative pressure hole, the screw comprises a screw mandrel, a first spiral blade and a second spiral blade, and the first spiral blade is arranged on the outer peripheral surface of one end, close to the extrusion head, of the screw mandrel; the second helical blade is arranged on the outer peripheral surface of one end, close to the feeding hopper, of the screw mandrel, and the inclination angle between the first helical blade and the screw mandrel is larger than that between the second helical blade and the screw mandrel.

2. The PVC single screw extruder of claim 1, wherein the outer peripheral surface of the sleeve is sheathed with a heating means.