A sealing structure for a waste pushing device

Abstract

This utility model discloses a sealing structure for a waste pushing device, including a fixed cylinder fixedly connected to a waste pyrolysis furnace, a pusher head inside the fixed cylinder, a sealing ring between the fixed cylinder and the pusher head, and a positioning ring fixed to the outer end of the fixed cylinder. The outer side of the positioning ring is flush with the port of the fixed cylinder and abuts against one side of the sealing ring. Multiple U-shaped mounting seats are evenly distributed around the outer circumference of the positioning ring, with the open ends of the U-shaped mounting seats all facing the center line of the positioning ring to form an encircling structure. A notch is provided on the side of the U-shaped mounting seat away from the fixed cylinder, and a threaded hole facing the axial direction of the fixed cylinder is provided at the notch. A bolt is connected to the threaded hole, and the end of the bolt abuts against the other side of the sealing ring through a washer. The sealing ring and the fixed cylinder slide against each other. This utility model effectively solves the sealing problem between the fixed cylinder and the pusher head while ensuring the free movement of the pushing device, and it is low in manufacturing cost and easy to maintain.

Description

Technical Field

[0001] This utility model relates to the field of waste pyrolysis furnace technology, specifically to a sealing structure for a waste feeding device. Background Technology

[0002] Waste pyrolysis furnaces are key environmental protection equipment used to process municipal solid waste, industrial waste, or biomass. Their core principle is to decompose organic waste into storable and usable solid, liquid, and gaseous products in a high-temperature, oxygen-deficient or oxygen-free environment, thereby achieving waste reduction, harmlessness, and resource recovery.

[0003] In the process of realizing this utility model, the inventors discovered that: During the feeding process, a pushing device is used to push the waste from outside the furnace into the furnace. Since the pushing device moves back and forth, gaps are reserved in the moving parts to allow the pushing device to move freely (because the pushing device has a large diameter and long length, it is not suitable to use lubricating oil in the high temperature environment inside the furnace, and the fixed cylinder is prone to deformation at high temperature, and high-precision fitting is prone to failure. In addition, the material adhering to the front end of the pusher head is easy to get stuck in the cylinder, so gaps are reserved). However, because of the gaps, flue gas will leak out of the furnace, affecting the waste treatment effect and polluting the environment. Summary of the Invention

[0004] In order to solve the problems existing in the prior art, this utility model proposes a sealing structure for a waste pushing device.

[0005] Therefore, the technical solution of this utility model is as follows: a sealing structure for a waste pushing device, comprising a fixed cylinder fixedly connected to a waste pyrolysis furnace, a pusher head provided inside the fixed cylinder, the diameter of the pusher head being smaller than the inner diameter of the fixed cylinder, characterized in that: a sealing ring with a square cross-section that is easy to assemble and disassemble is provided between the fixed cylinder and the pusher head, the specific structure being as follows: A positioning ring is fixed to the outer end of the fixed cylinder. The outer side of the positioning ring is flush with the port of the fixed cylinder and together they abut against one side of the sealing ring. Multiple U-shaped mounting seats are evenly distributed around the outer circumference of the positioning ring. The open ends of the U-shaped mounting seats all face the center line of the positioning ring to form an encircling structure. The side of the U-shaped mounting seat away from the fixed cylinder has a notch. The notch has a threaded hole facing the axial side of the fixed cylinder. A bolt is connected in the threaded hole. The end of the bolt abuts against the other side of the sealing ring through a washer. The sealing ring and the fixed cylinder slide against each other.

[0006] A further improvement to the above technical solution is that the gasket is a split-type snap-fit ​​structure, with mounting feet fixed at both ends. The mounting feet have mounting holes and are connected as a single unit by bolt fastening components. This facilitates the installation and replacement of the gasket.

[0007] A further improvement to the above technical solution is that the inner side of the open end of the U-shaped mounting seat is fixedly connected to one side of the positioning ring, the length of the side of the U-shaped mounting seat with the notch is greater than the length of the other side, and the threaded hole is located on the extension. This is to accommodate the pressing part of the sealing ring.

[0008] A further improvement to the above technical solution is that the sealing ring adopts a split-end structure, with the split point formed by compression and fixed by bolts. This facilitates the installation and replacement of the sealing ring.

[0009] A further improvement to the above technical solution is that the bolt fastening assembly includes a bolt and a nut. Using bolts and nuts for fastening is convenient to procure and inexpensive.

[0010] Beneficial effects: Compared with the prior art, this utility model can effectively solve the sealing problem between the fixed cylinder and the pusher head while ensuring the free movement of the pusher device, and it is also low in manufacturing cost and easy to maintain. Attached Figure Description

[0011] Figure 1 This is a cross-sectional view of the present invention.

[0012] Figure 2 This is an exploded assembly diagram of this utility model.

[0013] The following components are shown in the diagram: 1. Fixed cylinder; 2. Push head; 3. Sealing ring; 4. Positioning ring; 5. U-shaped mounting base; 6. Bolt; 7. Gasket. Detailed Implementation

[0014] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings, but this embodiment should not be construed as a limitation of this utility model.

[0015] This utility model is as follows Figure 1 and Figure 2 As shown: A sealing structure for a waste pushing device includes a fixed cylinder 1 fixedly connected to a waste pyrolysis furnace. A pusher 2 is provided inside the fixed cylinder. The diameter of the pusher is smaller than the inner diameter of the fixed cylinder. A sealing ring 3 with a square cross-section is provided between the fixed cylinder and the pusher for easy disassembly and assembly. The larger contact area of ​​the square sealing ring means lower surface pressure, which can more effectively disperse the sealing pressure. Moreover, because its cross-section is thicker, it is not easy to move or twist, and it can better maintain its original shape and resilience. This means that its sealing life is longer, especially in high-temperature environments.

[0016] In this embodiment, a positioning ring 4 is fixed to the outer end of the fixed cylinder. The outer surface of the positioning ring is flush with the port of the fixed cylinder and together they abut against one side of the sealing ring. Multiple U-shaped mounting seats 5 are evenly distributed around the outer circumference of the positioning ring. The open ends of the U-shaped mounting seats all face the center line of the positioning ring, forming a circumferential structure. A notch 51 is provided on the side of the U-shaped mounting seat away from the fixed cylinder. A threaded hole facing the axial direction of the fixed cylinder is provided at the notch. A bolt 6 is connected to the threaded hole, and the end of the bolt abuts against the other side of the sealing ring through a washer 7. The sealing ring and the fixed cylinder slide against each other. This structure fixes the sealing ring between the movable ring and the positioning ring, and the sealing ring slides against the fixed cylinder, ensuring sealing performance without affecting the movement of the pusher head.

[0017] In this embodiment, the gasket 7 is a split-type snap-fit ​​structure, with mounting feet 71 fixed at both ends. The mounting feet have mounting holes and are connected as a whole by a bolt fastening assembly, which includes bolts and nuts. This design facilitates the installation and replacement of the gasket.

[0018] In this embodiment, the inner side of the opening end of the U-shaped mounting base 5 is fixedly connected to one side of the positioning ring. The length of the side of the U-shaped mounting base with the notch is greater than the length of the other side. The threaded hole is located on the extension, which is compatible with the pressing part of the sealing ring. The sealing ring 3 adopts a split structure at both ends. The split part is formed by extrusion and fixed by bolts. This split structure facilitates the installation and replacement of the sealing ring.

[0019] Any aspects not described in detail in this specification are techniques well-known in the art.

[0020] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A sealing structure for a waste pushing device, comprising a fixed cylinder fixedly connected to a waste pyrolysis furnace, wherein a pusher head is provided inside the fixed cylinder, the diameter of the pusher head being smaller than the inner diameter of the fixed cylinder, characterized in that: A square-section sealing ring is provided between the fixed cylinder and the push head for easy disassembly and assembly. The specific structure is as follows: A positioning ring is fixed to the outer end of the fixed cylinder. The outer side of the positioning ring is flush with the port of the fixed cylinder and together they abut against one side of the sealing ring. Multiple U-shaped mounting seats are evenly distributed around the outer circumference of the positioning ring. The open ends of the U-shaped mounting seats all face the center line of the positioning ring to form an encircling structure. The side of the U-shaped mounting seat away from the fixed cylinder has a notch. The notch has a threaded hole facing the axial side of the fixed cylinder. A bolt is connected in the threaded hole. The end of the bolt abuts against the other side of the sealing ring through a washer. The sealing ring and the fixed cylinder slide against each other.

2. The sealing structure of the waste pushing device according to claim 1, characterized in that: The gasket is a split snap-fit ​​structure, with mounting feet fixed at both ends. The mounting feet have mounting holes and are connected as a whole by bolt fastening components.

3. The sealing structure of a waste pushing device according to claim 1 or 2, characterized in that: The inner side of the opening end of the U-shaped mounting base is fixedly connected to one side of the positioning ring. The length of the side of the U-shaped mounting base with the notch is greater than the length of the other side, and the threaded hole is provided on the extension.

4. The sealing structure of the waste pushing device according to claim 3, characterized in that: The sealing ring has a split structure at both ends, and the split is formed by extrusion and fixed by bolts.

5. The sealing structure of the waste pushing device according to claim 2, characterized in that: The bolt fastening assembly includes a bolt and a nut.

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