Single-screw extrusion device for pipe production

Abstract

The utility model relates to the technical field of screw extruders, in particular to a single-screw extrusion device for pipe production. According to the technical scheme, the extrusion machine comprises an extrusion machine body, a rotating shaft and a push head, the rotating shaft is rotationally installed in the extrusion machine body, a communicating groove is formed in the inner wall of the rotating shaft, a bearing is installed on one side of the inner wall of the communicating groove, and a connecting plate is rotationally installed in the bearing. The effect of improving the heating efficiency of the raw materials is achieved, the purpose of synchronously heating the raw materials at different positions in the extruder body is achieved, the heating efficiency of the raw materials in the extruder body is improved, and the melting speed of the raw materials is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of screw extruders, in particular to a single-screw extruder device for pipe production. Background Art

[0002] Pipes are indispensable materials in construction projects. They play a vital role in conveying liquids and gases. Plastic pipes made of PVC or PP materials need to be extruded through a screw extruder. A single screw extruder is a widely used device in the field of plastic processing. It works in a heated barrel through a rotating Archimedean screw to plasticize the plastic raw materials and then extrude them. When the plastic raw materials enter the barrel, as the screw rotates, the raw materials are conveyed forward and heated and plasticized in the process. Due to the different temperatures in different areas of the barrel, the plastic raw materials will go through stages such as solid conveying, melting, and melt conveying, and finally be extruded through the die.

[0003] Although the prior art has many benefits during use, it still has the following problems: its heating efficiency for raw materials is low, and the existing screw lacks a heating structure, which results in the material inside the extruder being able to be gradually heated only from the outside, affecting the heating efficiency after the equipment is started. Utility Model Content

[0004] The utility model aims to provide a single-screw extruder for pipe production to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a single-screw extruder for pipe production, comprising an extruder body, a rotating shaft and a pusher head, wherein a rotating shaft is rotatably installed inside the extruder body, a connecting groove is provided on the inner wall of the rotating shaft, a bearing is installed on one side of the inner wall of the connecting groove, and a connecting plate is rotatably installed inside the bearing.

[0006] When using a single-screw extruder device for pipe production in the technical solution, the raw material enters the extruder body through the hopper for heating, and the heating tube heats the heat exchange liquid in the connecting groove to transfer the temperature to the spiral blades, thereby achieving the purpose of synchronously heating the raw materials at different positions inside the extruder body, and the external motor drives the rotating shaft and the spiral blades to rotate in a circle through gears, and the spiral blades push the molten raw material inside the extruder body to move until it is extruded through the extrusion head and the push head.

[0007] Preferably, a hopper is plugged and installed on one side of the outer wall of the upper end of the extruder body, and the hopper is connected to the inside of the extruder body. The hopper is used to store raw materials.

[0008] Preferably, a heating pipe is installed inside the connecting plate, and the heating pipe is located inside the connecting groove. Heat exchange liquid is stored inside the connecting groove, and the heating pipe heats up the heat exchange liquid inside the connecting groove.

[0009] Preferably, the outer wall of the rotating shaft is provided with a spiral blade, and the spiral blade is in contact with the inner wall of the extruder body. The rotating shaft drives the spiral blade to rotate, thereby pushing the raw material inside the extruder body to move.

[0010] Preferably, a push head is installed on the outer wall of one end of the rotating shaft, and the push head is designed in a conical shape.

[0011] Preferably, an extrusion head is installed on the outer wall of one end of the extruder body, and the pusher head is located inside the extrusion head. The extrusion head and the pusher head extrude the raw materials.

[0012] Preferably, a gear is installed on the outer wall of one side of the rotating shaft, and the gear is located outside the extruder body. The external motor can drive the rotating shaft to rotate through the gear.

[0013] Preferably, one end of the extruder body is designed in a conical shape.

[0014] Compared with the prior art, the utility model has the following beneficial effects: the utility model achieves the effect of improving the heating efficiency of the raw materials by arranging a rotating shaft, a heating tube and a connecting plate; the raw materials enter the extruder body through the hopper for heating; the heating tube heats the heat exchange liquid in the connecting groove, thereby transferring the temperature to the spiral blades, thereby achieving the purpose of synchronously heating the raw materials at different positions inside the extruder body, improving the heating efficiency of the raw materials inside the extruder body, and improving the melting speed of the raw materials; and the external motor drives the rotating shaft and the spiral blades to rotate in a circle through gears, and the spiral blades push the molten raw materials inside the extruder body to move until they are extruded through the extrusion head and the push head. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the appearance of the extruder body structure of the utility model;

[0016] Figure 2 It is a schematic cross-sectional view of the main structure of the extruder of the utility model;

[0017] Figure 3 It is a structural schematic diagram of the utility model.

[0018] In the figure: 1. extruder body; 11. extrusion head; 12. hopper; 2. rotating shaft; 21. connecting groove; 22. bearing; 23. connecting plate; 24. heating tube; 25. gear; 26. spiral blade; 27. push head. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figure 1-Figure 3 , the utility model provides two embodiments:

[0021] Embodiment 1: A single-screw extruder device for pipe production includes an extruder body 1, a rotating shaft 2 and a pusher head 27. The rotating shaft 2 is rotatably installed inside the extruder body 1, and a connecting groove 21 is opened on the inner wall of the rotating shaft 2. A bearing 22 is installed on one side of the inner wall of the connecting groove 21, and a connecting plate 23 is rotatably installed inside the bearing 22.

[0022] A hopper 12 is plugged and installed on one side of the outer wall of the upper end of the extruder body 1, and the hopper 12 is connected to the inside of the extruder body 1. The hopper 12 is used to store raw materials.

[0023] The outer wall of the rotating shaft 2 is provided with a spiral blade 26, and the spiral blade 26 contacts the inner wall of the extruder body 1. The rotating shaft 2 drives the spiral blade 26 to rotate, thereby pushing the raw material inside the extruder body 1 to move.

[0024] A pusher head 27 is installed on the outer wall of one end of the rotating shaft 2, and the pusher head 27 is designed in a conical shape.

[0025] An extrusion head 11 is mounted on the outer wall of one end of the extruder body 1, and a pusher head 27 is located inside the extrusion head 11. The extrusion head 11 and the pusher head 27 extrude the raw materials.

[0026] A gear 25 is installed on the outer wall of one side of the rotating shaft 2, and the gear 25 is located outside the extruder body 1. The external motor can drive the rotating shaft 2 to rotate through the gear 25.

[0027] One end of the extruder body 1 is designed in a conical shape.

[0028] Embodiment 2: A single-screw extruder device for pipe production includes an extruder body 1, a rotating shaft 2 and a pusher head 27. The rotating shaft 2 is rotatably installed inside the extruder body 1. A connecting groove 21 is opened on the inner wall of the rotating shaft 2. A bearing 22 is installed on one side of the inner wall of the connecting groove 21. A connecting plate 23 is rotatably installed inside the bearing 22.

[0029] A hopper 12 is plugged and installed on one side of the outer wall of the upper end of the extruder body 1, and the hopper 12 is connected to the inside of the extruder body 1. The hopper 12 is used to store raw materials.

[0030] A heating pipe 24 is installed inside the connecting plate 23, and the heating pipe 24 is located inside the connecting groove 21. A heat exchange liquid is stored inside the connecting groove 21, and the heating pipe 24 heats the heat exchange liquid inside the connecting groove 21.

[0031] The outer wall of the rotating shaft 2 is provided with a spiral blade 26, and the spiral blade 26 contacts the inner wall of the extruder body 1. The rotating shaft 2 drives the spiral blade 26 to rotate, thereby pushing the raw material inside the extruder body 1 to move.

[0032] A pusher head 27 is installed on the outer wall of one end of the rotating shaft 2, and the pusher head 27 is designed in a conical shape.

[0033] An extrusion head 11 is mounted on the outer wall of one end of the extruder body 1, and a pusher head 27 is located inside the extrusion head 11. The extrusion head 11 and the pusher head 27 extrude the raw materials.

[0034] A gear 25 is installed on the outer wall of one side of the rotating shaft 2, and the gear 25 is located outside the extruder body 1. The external motor can drive the rotating shaft 2 to rotate through the gear 25.

[0035] One end of the extruder body 1 is designed in a conical shape. The raw material enters the extruder body 1 through the hopper 12 for heating. The heating tube 24 heats the heat exchange liquid in the connecting groove 21, so that the temperature is transferred to the spiral blade 26, thereby achieving the purpose of synchronously heating the raw materials at different positions inside the extruder body 1, improving the heating efficiency of the raw materials inside the extruder body 1, and increasing the melting speed of the raw materials. The external motor drives the shaft 2 and the spiral blade 26 to rotate in a circle through the gear 25, and the spiral blade 26 pushes the molten raw material inside the extruder body 1 to move until it is extruded through the extrusion head 11 and the push head 27.

[0036] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A single screw extruder for pipe production, comprising an extruder body (1), a rotating shaft (2) and a pusher head (27), characterized in that: A rotating shaft (2) is rotatably mounted inside the extruder body (1), a connecting groove (21) is provided on the inner wall of the rotating shaft (2), a bearing (22) is mounted on one side of the inner wall of the connecting groove (21), a connecting plate (23) is rotatably mounted inside the bearing (22), a heating tube (24) is mounted inside the connecting plate (23), and the heating tube (24) is located inside the connecting groove (21), a spiral blade (26) is mounted on the outer wall of the rotating shaft (2), and the spiral blade (26) is in contact with the inner wall of the extruder body (1).

2. A single screw extruder for pipe production according to claim 1, characterized in that: A hopper (12) is plugged and installed on one side of the outer wall of the upper end of the extruder body (1), and the hopper (12) is connected to the inside of the extruder body (1).

3. A single screw extruder for pipe production according to claim 2, characterized in that: A pusher head (27) is installed on the outer wall of one end of the rotating shaft (2), and the pusher head (27) is designed in a conical shape.

4. A single screw extruder for pipe production according to claim 1, characterized in that: An extrusion head (11) is installed on the outer wall of one end of the extruder body (1), and the push head (27) is located inside the extrusion head (11).

5. A single screw extruder for pipe production according to claim 1, characterized in that: A gear (25) is installed on the outer wall of one side of the rotating shaft (2), and the gear (25) is located outside the extruder body (1).

6. A single screw extruder for pipe production according to claim 1, characterized in that: One end of the extruder body (1) is designed in a conical shape.

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