Extrusion and drying integrated reduction device and working method thereof

Abstract

The application discloses a kind of extrusion and drying integrated reduction device and its working method, including mutually matched extrusion section and drying section, the drying section is connected in the discharge end of extrusion section, the extrusion section includes extrusion net cylinder and the pitch change screw feeding mechanism being arranged in extrusion net cylinder, the drying section includes high-temperature heating cylinder and the screw feeding mechanism being arranged in high-temperature heating cylinder, the high-temperature heating cylinder is double-layer sealed cylinder, double-layer sealed cylinder is circulated with high-temperature heat conducting oil flowing;The feeding end of high-temperature heating cylinder is connected with the discharge end of extrusion net cylinder, and the inner diameter of extrusion net cylinder is same with the inner diameter of high-temperature heating cylinder.The extrusion reduction part and drying reduction part in waste treatment equipment are integrated in the application, simple and compact structure, can reduce the volume of equipment whole, reduce floor area, and save the material conveying link of extrusion reduction part to drying reduction part, improve reduction efficiency, increase reduction ratio, reduce waste treatment cost.

Description

Technical Field

[0001] This invention belongs to the field of energy-saving and environmental protection equipment technology, specifically a compression and drying integrated volume reduction device and its working method. Background Technology

[0002] Traditional food waste treatment equipment typically uses a screw feeding mechanism to squeeze out water before using a separate drying device for the waste reduction section (which includes separate compression and drying sections). This increases the overall size and floor space required for the equipment. Furthermore, the process of conveying the waste to the drying device via a lifting or other conveying mechanism is time-consuming and adds an extra material handling step, which means there is an additional waste residue step. This affects the efficiency and proportion of compression reduction, and increases the cost of waste treatment. Summary of the Invention

[0003] In order to overcome the defects and deficiencies in the prior art, the present invention provides an integrated compression and drying reduction device and its working method that integrates the compression reduction section and the drying reduction section of a waste treatment equipment. The device has a simple and compact structure, which can reduce the overall size of the equipment, reduce the floor space, and eliminate the material conveying link from the compression reduction section to the drying reduction section, thereby improving the reduction efficiency, increasing the reduction ratio, and reducing the cost of waste treatment.

[0004] To achieve the above objectives, the present invention provides the following technical solution: an integrated extrusion and drying reduction device, comprising an extrusion section and a drying section that cooperate with each other, wherein the drying section is connected to the discharge end of the extrusion section, the extrusion section includes an extrusion mesh cylinder and a variable pitch screw feeding mechanism disposed within the extrusion mesh cylinder, and the drying section includes a high-temperature heating cylinder and a screw feeding mechanism disposed within the high-temperature heating cylinder, wherein the high-temperature heating cylinder is a double-sealed cylinder, and high-temperature heat transfer oil circulates within the double-sealed cylinder; the feed end of the high-temperature heating cylinder is connected to the discharge end of the extrusion mesh cylinder, and the inner diameter of the extrusion mesh cylinder is the same as the inner diameter of the high-temperature heating cylinder.

[0005] This invention integrates the compression reduction section and the drying reduction section of the waste treatment equipment into one, resulting in a simple and compact structure. This reduces the overall size of the equipment, decreases the floor space required, and eliminates the material conveying link between the compression reduction section and the drying reduction section, thereby improving reduction efficiency, increasing the reduction ratio, and reducing waste treatment costs.

[0006] Preferably, the variable pitch screw feeding mechanism and the screw feeding mechanism are an integral structure, and the inner wall ring of the variable pitch screw feeding mechanism and the drive shaft, as well as the inner wall ring of the screw feeding mechanism and the drive shaft, are both hollow structures.

[0007] This structure makes it compact, the screw feeding is more stable and reliable, and it can release steam and pressure through internal hollowing while ensuring overall strength, and appropriately reduce weight and production costs.

[0008] Preferably, the inner wall ring of the spiral feeding mechanism is provided with a fine venting gap structure.

[0009] During the drying process, the steam and some oil mixture generated by the material in the drying section are discharged through the gaps in the inner wall of the screw mechanism.

[0010] Preferably, the top of the feed end of the extrusion section is provided with a feed hopper, and the discharge end of the drying section is provided with a discharge port.

[0011] This structure makes its feeding and discharging more stable and reliable.

[0012] Preferably, one end of the high-temperature heating cylinder is provided with a heat transfer oil inlet, and the other end of the high-temperature heating cylinder is provided with a heat transfer oil outlet. The heat transfer oil inlet is located at the feed end of the drying section, and the heat transfer oil outlet is located at the discharge end of the drying section.

[0013] This structure ensures the recyclability of the heat transfer oil inside the high-temperature heating cylinder.

[0014] Preferably, the extrusion section and the drying section are connected by a connecting component, the feed end of the extrusion section is provided with a first mounting component, and the discharge end of the drying section is provided with a second mounting component.

[0015] This structure ensures a smoother and more reliable connection between the extrusion section and the drying section, and facilitates the installation of the entire volume reduction device in the waste treatment equipment.

[0016] Preferably, the drive shaft of the variable pitch screw feeding mechanism and the screw feeding mechanism passes through the interior of the variable pitch screw feeding mechanism and the screw feeding mechanism. The first mounting assembly is provided with a first bearing that matches the drive shaft in the middle, and the second mounting assembly is provided with a second bearing that matches the drive shaft in the middle. One end of the drive shaft is exposed on the outside of the first mounting assembly.

[0017] This structure ensures that the drive shaft drives the variable pitch screw feeder and the screw feeder mechanism more smoothly and reliably.

[0018] Preferably, the inner wall diameter of the variable pitch screw feeder and the inner wall diameter of the screw feeder both gradually increase from the feed end to the discharge end.

[0019] This structure creates a sloping inner cavity between the variable pitch screw feeder and the screw feeder. During the drying process, the steam and some of the oil mixture generated by the material in the drying section are discharged from the outlet along the slope.

[0020] Preferably, the feeding end of the extrusion section, the discharge end of the drying section, and the space between the extrusion section and the drying section are all provided with supporting plates, and the outer wall of the extrusion mesh cylinder is provided with several reinforcing ribs.

[0021] This structure ensures the overall installation is secure, while also ensuring the strength of the extruded mesh cylinder.

[0022] A method for operating an integrated extrusion and drying weight reduction device includes the following steps: S1. Kitchen waste enters the compression section below through the feed hopper; S2. By rotating the variable pitch screw feeding mechanism, kitchen waste material is conveyed to the left, and at the same time, the variable pitch screw structure forms extrusion force in the extrusion cylinder. S3. The extrusion cylinder uses a fine mesh to expel water and oil from the material, while the squeezed material continues to move to the left into the drying section under the pressure of the extrusion. S4. High-temperature heat transfer oil circulates inside the high-temperature heating cylinder of the drying section, continuously providing the heat energy required for drying the materials inside the drying section. S5. During the drying process, the steam and some grease generated by the material in the drying section are discharged through the exhaust slit structure on the inner wall of the screw feeding mechanism. S6. Finally, under high temperature, the material with lower water and oil content is discharged from the outlet at the end of the drying section.

[0023] Compared with the prior art, the beneficial effects of the present invention are as follows: by integrating the compression reduction section and the drying reduction section in the waste treatment equipment, the structure is simple and compact, which can reduce the overall volume of the equipment, reduce the floor space, and eliminate the material conveying link from the compression reduction section to the drying reduction section, thereby improving the reduction efficiency, increasing the reduction ratio, and reducing the cost of waste treatment. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the structure of the present invention after the feed hopper has been removed; Figure 3 This is a cross-sectional view of the present invention after the feed hopper has been removed; Figure 4 This is a schematic diagram of the variable pitch screw feeding mechanism and the screw feeding mechanism in this invention; Figure 5 for Figure 4 Sectional view of AA; Figure 6 This is a side view of the present invention; In the diagram: 1. Extrusion section; 2. Drying section; 3. Extrusion screen cylinder; 4. Variable pitch screw feeding mechanism; 5. High-temperature heating cylinder; 6. Screw feeding mechanism; 7. Heat transfer oil; 8. Exhaust slit structure; 9. Feed hopper; 10. Discharge port; 11. Heat transfer oil inlet; 12. Heat transfer oil outlet; 13. Connecting assembly; 14. First mounting assembly; 15. Second mounting assembly; 16. Drive shaft; 17. First bearing; 18. Second bearing; 19. Support plate; 20. Reinforcing rib. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Example 1

[0027] like Figure 1-4 As shown, an integrated extrusion and drying reduction device includes an extrusion section 1 and a drying section 2 that cooperate with each other. The drying section 2 is connected to the discharge end of the extrusion section 1. The extrusion section 1 includes an extrusion mesh cylinder 3 and a variable pitch screw feeding mechanism 4 disposed within the extrusion mesh cylinder 3. The drying section 2 includes a high-temperature heating cylinder 5 and a screw feeding mechanism 6 disposed within the high-temperature heating cylinder 5. The high-temperature heating cylinder 5 is a double-sealed cylinder, and high-temperature heat transfer oil 7 circulates inside the double-sealed cylinder. The feed end of the high-temperature heating cylinder 5 is connected to the discharge end of the extrusion mesh cylinder 3, and the inner diameter of the extrusion mesh cylinder 3 is the same as the inner diameter of the high-temperature heating cylinder 5.

[0028] The variable pitch screw feeding mechanism 4 and the screw feeding mechanism 6 are integrated structures, and the inner wall ring of the variable pitch screw feeding mechanism 4 and the drive shaft 16, as well as the inner wall ring of the screw feeding mechanism 6 and the drive shaft 16, are hollow structures.

[0029] The inner wall ring of the spiral feeding mechanism 6 is provided with a fine exhaust slit structure 8.

[0030] The top of the feed end of the extrusion section 1 is provided with a feed hopper 9, and the discharge end of the drying section 2 is provided with a discharge port 10.

[0031] One end of the high-temperature heating cylinder 5 is provided with a heat transfer oil inlet 11, and the other end of the high-temperature heating cylinder 5 is provided with a heat transfer oil outlet 12. The heat transfer oil inlet 11 is located at the feeding end of the drying section 2, and the heat transfer oil outlet 12 is located at the discharging end of the drying section 2.

[0032] The extrusion section 1 and the drying section 2 are connected by a connecting component 13. The feed end of the extrusion section 1 is provided with a first mounting component 14, and the discharge end of the drying section 2 is provided with a second mounting component 15.

[0033] The drive shaft 16 of the variable pitch screw feeding mechanism 4 and the screw feeding mechanism 6 passes through the interior of the variable pitch screw feeding mechanism 4 and the screw feeding mechanism 6. The first mounting assembly 14 is provided with a first bearing 17 that cooperates with the drive shaft 16 in the middle. The second mounting assembly 14 is provided with a second bearing 18 that cooperates with the drive shaft 16 in the middle. One end of the drive shaft 16 is exposed on the outside of the first mounting assembly 14. Example 2

[0034] The inner wall diameter of both the variable pitch screw feeding mechanism 4 and the screw feeding mechanism 6 gradually increases from the feed end to the discharge end.

[0035] Support plates 19 are provided at the feeding end of the extrusion section 1, the discharge end of the drying section 2, and between the extrusion section 1 and the drying section 2. Several reinforcing ribs 20 are provided on the outer wall of the extrusion mesh cylinder 3. Example 3

[0036] A method for operating an integrated extrusion and drying weight reduction device includes the following steps: 1. First, kitchen waste enters the extrusion mechanism (extrusion section) below through the feed hopper. 2. The extrusion mechanism consists of a variable pitch screw feeding mechanism and an extrusion screen cylinder. The variable pitch screw feeding mechanism rotates to convey kitchen waste to the left, while the variable pitch screw structure creates extrusion pressure within the screen cylinder (e.g., ...). Figure 1 (as shown) 3. The extrusion cylinder, through a fine mesh (not shown in the diagram), forces water and oil out of the material, while the squeezed-dry material continues to move to the left into the drying section under the pressure of the extrusion. Figure 1 (as shown) 4. The drying section consists of a high-temperature heating cylinder and a screw feeding mechanism. The high-temperature heating cylinder is a double-layer cylinder with high-temperature heat transfer oil circulating inside the double-sealed cylinder (a heat transfer oil circulation supply mechanism is required) to continuously provide the heat energy required for drying the material inside the cylinder. 5. The inner wall of the screw feeding mechanism in the drying section has a fine exhaust gap structure. During the drying process, the steam and some grease generated by the material in the drying section are discharged through the gaps in the inner wall of the screw feeding mechanism. (Because the inner wall of the screw feeding mechanism has a certain slope, the steam and grease (oil and water) will go along the slope to the end of the screw feeding mechanism. There are several baffles on the end face of the screw feeding mechanism, and there is a drain hole in the middle. During the rotation, the steam and grease (oil and water) will be carried to the drain hole in the middle through the rotation of the baffles and discharged from the drain hole.) 6. Finally, under high temperature, the material with lower water and oil content is discharged from the outlet at the end of the drying section.

[0037] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A compression and drying integrated volume reduction device, comprising a compression section (1) and a drying section (2) that cooperate with each other, characterized in that: The drying section (2) is connected to the discharge end of the extrusion section (1). The extrusion section (1) includes an extrusion screen cylinder (3) and a variable pitch screw feeding mechanism (4) disposed in the extrusion screen cylinder (3). The drying section (2) includes a high temperature heating cylinder (5) and a screw feeding mechanism (6) disposed in the high temperature heating cylinder (5). The high temperature heating cylinder (5) is a double-sealed cylinder, and high temperature heat transfer oil (7) circulates inside the double-sealed cylinder. The feed end of the high temperature heating cylinder (5) is connected to the discharge end of the extrusion screen cylinder (3), and the inner diameter of the extrusion screen cylinder (3) is the same as the inner diameter of the high temperature heating cylinder (5).

2. The integrated extrusion and drying reduction device according to claim 1, characterized in that: The variable pitch screw feeding mechanism (4) and the screw feeding mechanism (6) are an integral structure, and the inner wall ring of the variable pitch screw feeding mechanism (4) and the drive shaft (16) and the inner wall ring of the screw feeding mechanism (6) and the drive shaft (16) are both hollow structures.

3. The integrated extrusion and drying weight reduction device according to claim 2, characterized in that: The inner wall ring of the spiral feeding mechanism (6) is provided with a fine exhaust slit structure (8).

4. The integrated extrusion and drying weight reduction device according to claim 1, characterized in that: The top of the feed end of the extrusion section (1) is provided with a feed hopper (9), and the discharge end of the drying section (2) is provided with a discharge port (10).

5. The integrated extrusion and drying reduction device according to claim 1, characterized in that: One end of the high-temperature heating cylinder (5) is provided with a heat transfer oil inlet (11), and the other end of the high-temperature heating cylinder (5) is provided with a heat transfer oil outlet (12). The heat transfer oil inlet (11) is located at the feed end of the drying section (2), and the heat transfer oil outlet (12) is located at the discharge end of the drying section (2).

6. The integrated extrusion and drying reduction device according to claim 1, characterized in that: The extrusion section (1) and the drying section (2) are connected by a connecting component (13). The feeding end of the extrusion section (1) is provided with a first mounting component (14), and the discharging end of the drying section (2) is provided with a second mounting component (15).

7. The integrated extrusion and drying reduction device according to claim 6, characterized in that: The drive shaft (16) of the variable pitch screw feeding mechanism (4) and the screw feeding mechanism (6) passes through the interior of the variable pitch screw feeding mechanism (4) and the screw feeding mechanism (6). The first mounting assembly (14) is provided with a first bearing (17) that cooperates with the drive shaft (16) in the middle. The second mounting assembly (14) is provided with a second bearing (18) that cooperates with the drive shaft (16) in the middle. One end of the drive shaft (16) is exposed on the outside of the first mounting assembly (14).

8. The integrated extrusion and drying reduction device according to claim 1, characterized in that: The inner wall diameter of the variable pitch screw feeder (4) and the inner wall diameter of the screw feeder (6) both gradually increase from the feed end to the discharge end.

9. The integrated extrusion and drying weight reduction device according to claim 1, characterized in that: The feeding end of the extrusion section (1), the discharge end of the drying section (2), and the space between the extrusion section (1) and the drying section (2) are all provided with support plates (19), and the outer wall of the extrusion mesh cylinder (3) is provided with several reinforcing ribs (20).

10. A method for operating the integrated extrusion and drying weight reduction device as described in claim 4, characterized in that: Includes the following steps: S1. Kitchen waste enters the compression section below through the feed hopper; S2. By rotating the variable pitch screw feeding mechanism, kitchen waste material is conveyed to the left, and at the same time, the variable pitch screw structure forms a squeezing force in the squeezing cylinder. S3. The extrusion cylinder uses a fine mesh to expel water and oil from the material, while the squeezed material continues to move to the left into the drying section under the pressure of the extrusion. S4. High-temperature heat transfer oil circulates inside the high-temperature heating cylinder of the drying section, continuously providing the heat energy required for drying the materials inside the drying section. S5. During the drying process, the steam and some grease generated by the material in the drying section are discharged through the exhaust slit structure on the inner wall of the screw feeding mechanism. S6. Finally, under high temperature, the material with lower water and oil content is discharged from the outlet at the end of the drying section.

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