Water-cooling extrusion shaft for foam foaming plastic recovery equipment

Abstract

The utility model discloses a water-cooling extrusion shaft for foam foaming plastic recovery equipment, which relates to the technical field of foam solid waste recovery and comprises a rotating shaft, a conical shell is fixedly connected to the outer side of the rotating shaft, and the axis of the rotating shaft and the axis of the conical shell are collinear. Spiral conveying blades are fixedly connected to the outer sides of the conical shell and the rotating shaft; a liquid cavity is formed in the conical shell, a rotating joint is fixedly connected to the end, close to the bottom end of the conical shell, of the rotating shaft, the liquid cavity is connected with the rotating joint through a liquid conveying pipe, and the liquid conveying pipe is fixedly connected to the outer side of the rotating shaft through a shaft sleeve. According to the water-cooling extrusion shaft for the foamed plastic recovery equipment, material melting caused by temperature rise of the conical shell in the foamed plastic compression process can be avoided, and adhesion of materials in a machine is avoided, so that the compression effect is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of foam solid waste recycling, in particular to a water-cooled extrusion shaft used for foamed plastic recycling equipment. Background Art

[0002] In industries such as home appliance packaging, foam materials are often needed for protection. These materials contain a lot of air, which has a good shock-absorbing and protective effect on the products. However, because there is a lot of air inside the foam materials, these materials are also very troublesome to recycle and process. The debris is difficult to collect during the processing process, which has a great impact. At present, foam plastic recycling equipment is mostly used for compression and recycling.

[0003] A foam solid waste compression and recovery device is disclosed in the Chinese utility model patent application number: CN202123052272.0. Since the continuous squeezing of foam solid waste in the pressing bin will generate a certain amount of heat, a cooling bin is set on the outside of the pressing bin and filled with cooling water to cool the pressing bin. However, in actual use, it is found that the cooling bin alone is not enough to meet the cooling needs. The main reason is that when compressing foam and other foaming plastics, the material in the spiral extrusion section will generate friction and heat during the advancement process, and the cooling bin cannot cool the inside of the extrusion section. Excessive temperature causes the material to melt, causing the material inside the machine to stick together, affecting the discharge.

[0004] Therefore, it is necessary to propose a water-cooled extrusion shaft for foamed plastic recycling equipment to solve the above problems. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] The purpose of the utility model is to provide a water-cooled extrusion shaft for foamed plastic recycling equipment to solve the problem that when the foam solid waste compression recovery device proposed in the above background technology extrudes materials, the cooling effect is poor, the temperature is too high causing the material to melt, causing the material inside the machine to stick together, and affecting the discharge of the material.

[0007] (II) Technical solution

[0008] To achieve the above objectives, the utility model is implemented through the following technical solutions: a water-cooled extrusion shaft for foamed plastic recycling equipment, including a rotating shaft, a conical shell is fixedly connected to the outer side of the rotating shaft, the axis of the rotating shaft is colinear with the axis of the conical shell, and the outer sides of the conical shell and the rotating shaft are fixedly connected with spiral conveying blades; a liquid cavity is provided inside the conical shell, and one end of the rotating shaft close to the bottom end of the conical shell is fixedly connected to a rotary joint, the liquid cavity is connected to the rotary joint through an infusion tube, and the infusion tube is fixedly connected to the outer side of the rotating shaft through a sleeve.

[0009] A through hole is provided in the middle of the shaft sleeve along its axial direction, and the infusion tube passes through the shaft sleeve through the through hole.

[0010] Preferably, the rotary joint is fixedly connected to the rotating shaft via a coupling.

[0011] Preferably, there are two infusion tubes, and a water inlet and a water outlet are provided at the bottom end of the conical shell, and both the water inlet and the water outlet are connected to the rotary joint through the infusion tube.

[0012] Preferably, a sleeve is provided between the shaft sleeve and the liquid cavity, the sleeve is sleeved on the outside of the rotating shaft, one end of the sleeve is fixedly connected to the conical shell, and the infusion tube is located on the inner side of the sleeve.

[0013] Preferably, it also includes a conveying cylinder, the rotating shaft penetrates the conveying cylinder axially, the rotating shaft is rotatably connected to the conveying cylinder, and a feed port and a discharge port are respectively provided at both ends of the conveying cylinder, the feed port is opened on one side of the conveying cylinder wall, and the discharge port is opened at the end of the conveying cylinder.

[0014] (III) Beneficial effects

[0015] Compared with the prior art, the utility model provides a water-cooled extrusion shaft for a foamed plastic recycling device, which has the following beneficial effects:

[0016] 1. The water-cooled extrusion shaft used for the foam plastic recycling equipment sets a liquid cavity in the conical shell, and cools the conical shell by passing cooling water into the liquid cavity, thereby avoiding the melting of the material due to the temperature rise of the conical shell during the compression of the foam plastic, and avoiding the adhesion of the material inside the machine, so as to ensure the compression effect.

[0017] 2. The water-cooled extrusion shaft used for the foamed plastic recycling equipment fixes a sleeve on the outside of the rotating shaft and a rotating joint at the end of the rotating shaft. Under the action of the sleeve, the infusion tube can be prevented from affecting the bearing installation. At the same time, under their joint action, the infusion tube can still supply water to the liquid cavity when the rotating shaft rotates, so as to ensure the cooling effect of the conical shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the front cross-section of the structure of the utility model;

[0019] Figure 2 It is a schematic diagram of the structure of the utility model.

[0020] In the figure: 1. rotary joint; 2. bushing; 3. through hole; 4. infusion tube; 5. discharge port; 6. liquid chamber; 7. conical shell; 8. rotating shaft; 9. feed port; 10. spiral conveying blade; 11. conveying cylinder; 12. bearing. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0022] See also Figure 1-2 As shown, a water-cooled extrusion shaft for a foamed plastic recycling device includes a rotating shaft 8, a conical shell 7 is fixedly connected to the outer side of the rotating shaft 8, the axis of the rotating shaft 8 is colinear with the axis of the conical shell 7, and spiral conveying blades 10 are fixedly connected to the outer sides of the conical shell 7 and the rotating shaft 8; a liquid cavity 6 is provided inside the conical shell 7, and a rotary joint 1 is fixedly connected to one end of the rotating shaft 8 close to the bottom end of the conical shell 7, and the liquid cavity 6 is connected to the rotary joint 1 through an infusion tube 4, and the infusion tube 4 is fixedly connected to the outer side of the rotating shaft 8 through a sleeve 2.

[0023] By setting a liquid cavity 6 inside the conical shell 7 and sending cooling water into the liquid cavity 6 through the infusion tube 4, the conical shell 7 can be cooled to avoid the melting of the foamed plastic caused by heat generation during the compression process. The rotary joint 1 is fixedly connected to the axial end of the rotating shaft 8, and the infusion tube 4 is connected to the liquid pump through the rotary joint 1, so that the rotating shaft 8 can still supply water to the liquid cavity 6 when the rotating shaft 8 is in a rotating state. At the same time, the infusion tube 4 is fixed to the outside of the rotating shaft 8 through the shaft sleeve 2, and the bearing 12 is installed on the outside of the shaft sleeve 2, so as to avoid the infusion tube 4 affecting the installation of the bearing 12, and at the same time, the infusion tube 4 will not affect the rotation of the rotating shaft 8.

[0024] Specifically, a through hole 3 is opened in the middle of the sleeve 2 along its axial direction, and the infusion tube 4 passes through the sleeve 2 through the through hole 3. By opening the through hole 3, the installation of the infusion tube 4 is more convenient, and the rotary joint 1 is fixedly connected to the rotating shaft 8 through a coupling.

[0025] In some embodiments, there are two infusion tubes 4, and a water inlet and a water outlet are provided at the bottom end of the conical shell 7. The two infusion tubes 4 are respectively connected with the water inlet and the water outlet. By setting the water inlet and the water outlet, water can be circulated to the conical shell 7 through the infusion tube 4, thereby improving the cooling effect of the conical shell 7. The rotary joint 1 adopts a two-channel joint, and the two channels are respectively connected with the water inlet and the water outlet through the infusion tube 4.

[0026] In some embodiments, in order to protect the infusion tube 4, a sleeve is provided between the sleeve 2 and the liquid chamber 6, the sleeve is sleeved on the outside of the rotating shaft 8, one end of the sleeve is fixedly connected to the conical shell 7, and the infusion tube 4 is located on the inner side of the sleeve. The material can be avoided by setting the sleeve.

[0027] Specifically, it also includes a conveying cylinder 11, a rotating shaft 8 axially penetrates the conveying cylinder 11, the rotating shaft 8 is rotatably connected to the conveying cylinder 11, and a feed port 9 and a discharge port 5 are respectively provided at both ends of the conveying cylinder 11. The feed port 9 is opened on one side of the cylinder wall of the conveying cylinder 11, and the discharge port 5 is opened at the end of the conveying cylinder 11.

[0028] The rotating shaft 8 is arranged in the conveying cylinder 11, and the bottom end of the conical shell 7 is made to correspond to the position of the discharge port 5. When the foamed plastic is compressed, the material to be compressed is sent from the feed port 9 to the conveying cylinder 11, and the material is pushed toward the discharge port 5 under the push of the spiral conveying blade 10, and the compression of the material is achieved with the cooperation of the conical shell 7.

[0029] Working principle: When in use, the rotating shaft 8 is rotated and arranged on the mounting frame through the bearing 12, the conveying cylinder 11 is fixedly connected to the mounting frame, and the end of the rotating shaft 8 away from the rotary joint 1 is connected to the output shaft of the motor. The rotating shaft 8 is driven to rotate by the motor, and the foamed plastic is pushed to the discharge port 5 under the action of the spiral conveying blade 10. Under the action of the conical shell 7, the foamed plastic is gradually compressed and discharged from the discharge port 5. By arranging a liquid cavity 6 inside the conical shell 7, cooling water is sent into the liquid cavity 6 through the infusion tube 4, and the cooling water can be used to cool the conical shell 7, thereby avoiding the melting of the material due to the heating of the conical shell 7 during the compression of the material.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A water-cooled extrusion shaft for a foamed plastic recycling device, comprising a rotating shaft (8), characterized in that: The outer side of the rotating shaft (8) is fixedly connected to a conical housing (7); the axis of the rotating shaft (8) is colinear with the axis of the conical housing (7); and the outer sides of the conical housing (7) and the rotating shaft (8) are fixedly connected to spiral conveying blades (10); A liquid cavity (6) is provided inside the conical shell (7); one end of the rotating shaft (8) close to the bottom end of the conical shell (7) is fixedly connected to a rotating joint (1); the liquid cavity (6) is connected to the rotating joint (1) via a liquid infusion tube (4); and the liquid infusion tube (4) is fixedly connected to the outside of the rotating shaft (8) via a shaft sleeve (2).

2. A water-cooled extrusion shaft for a foamed plastic recycling device according to claim 1, characterized in that: A through hole (3) is provided in the middle of the shaft sleeve (2) along its axial direction, and the infusion tube (4) passes through the shaft sleeve (2) through the through hole (3).

3. A water-cooled extrusion shaft for a foamed plastic recycling device according to claim 1, characterized in that: The rotary joint (1) is fixedly connected to the rotating shaft (8) via a coupling.

4. A water-cooled extrusion shaft for a foamed plastic recycling device according to claim 1, characterized in that: There are two infusion tubes (4), and a water inlet and a water outlet are provided at the bottom end of the conical shell (7), and both the water inlet and the water outlet are connected to the rotary joint (1) through the infusion tube (4).

5. The water-cooled extrusion shaft for a foamed plastic recycling device according to claim 1, characterized in that: A sleeve is provided between the shaft sleeve (2) and the liquid chamber (6), the sleeve being sleeved on the outside of the rotating shaft (8), one end of the sleeve being fixedly connected to the conical shell (7), and the infusion tube (4) being located on the inside of the sleeve.

6. A water-cooled extrusion shaft for a foamed plastic recycling device according to claim 1, characterized in that: It also comprises a conveying cylinder (11), the rotating shaft (8) penetrates the conveying cylinder (11) along the axial direction of the conveying cylinder (11), the rotating shaft (8) is rotatably connected to the conveying cylinder (11), and a feed port (9) and a discharge port (5) are respectively provided at two ends of the conveying cylinder (11), the feed port (9) is opened on one side of the cylinder wall of the conveying cylinder (11), and the discharge port (5) is opened at the end of the conveying cylinder (11).

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