Waste tire cracking utilization device

By installing a sealing structure and filter screen in the tire pyrolysis unit, the problem of incomplete pyrolysis caused by air ingress was solved, thereby improving the quality and production efficiency of liquid oil and solid carbon black.

CN121780192APending Publication Date: 2026-04-03TONGREN SOUTHWEST CEMENT CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-12-26
Publication Date
2026-04-03

AI Technical Summary

Technical Problem

Existing tire granule pyrolysis equipment is prone to air entry during the heating process, resulting in incomplete pyrolysis reaction, poor quality of the produced liquid oil, gas and solid carbon black, and low production efficiency.

Method used

A waste tire pyrolysis and utilization device is designed. A sealing structure is formed by setting a locking structure and a sealing mechanism to ensure an oxygen-deficient environment in the pyrolysis chamber. The tire rubber particles in the pyrolysis chamber are heated by a heating wire. A filter screen is set in the oil collection tank to filter the liquid oil, prevent solid carbon black from entering, and improve the purity of the liquid oil.

Benefits of technology

This achieved an oxygen-deficient state for the pyrolysis reaction, improving the quality of liquid oil, gas, and solid carbon black, and increasing production efficiency.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention relates to the technical field of tire treatment equipment, in particular to a waste tire cracking utilization device which comprises a cracking box, an upper cover is rotatably arranged at the upper end of the cracking box, a locking structure is arranged on the upper cover, and a cracking chamber for cracking waste tires is arranged in the cracking box. A heating mechanism for heating waste tires is arranged on the cracking chamber, an oil collecting tank matched with the heating mechanism is arranged at the lower end of the cracking chamber, a plugging mechanism matched with the oil collecting tank is arranged in the cracking chamber, and an upper cover is fixed by arranging a locking structure. The upper cover and the feed port of the cracking box form a sealing structure to prevent air permeation, and the plugging mechanism is arranged to plug the cracking chamber to form a sealing structure, so that air cannot enter the cracking chamber during reaction, the cracking chamber can be in an anoxic state, and liquid oil, gas and solid carbon black produced by cracking reaction are good in quality. The production efficiency is high.
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Description

Technical Field

[0001] This invention relates to the field of tire processing equipment technology, and in particular to a waste tire pyrolysis and utilization device. Background Technology

[0002] Tire pyrolysis refers to the process of converting the organic materials in waste tires into reusable resources such as oil, gas, and carbon black through high-temperature decomposition and chemical reactions. It is an environmentally friendly waste treatment technology that can effectively reduce the pollution of waste tires to the environment while recovering valuable components.

[0003] Existing tire granule pyrolysis devices generally heat tire granules under anaerobic or hypoxic conditions, causing them to decompose into liquid oil, gas, and solid carbon black. For example, Chinese Patent Publication No. CN215843161U discloses "a tire granule pyrolysis device", which uses an electric push rod to drive two linkage rods to move in opposite directions through a deflection rod, causing the movable toothed plate to deflect in a meandering manner. This causes intermittent misaligned collisions between the fixed toothed plate and the movable toothed plate, resulting in secondary pulverization of the raw materials entering the feed box. Through the two pulverization processes, the volume of the raw materials is initially controlled, thereby improving the practicality of the device. In practical applications, tire granules need to be continuously heated to induce a pyrolysis reaction. However, existing pyrolysis devices are prone to introducing air during the heating of tire granules, resulting in incomplete pyrolysis reactions and poor quality of the produced liquid oil, gas, and solid carbon black, leading to low production efficiency. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies, such as the ease with which air can enter the pyrolysis device, leading to incomplete pyrolysis reactions, poor quality of the produced liquid oil, gas, and solid carbon black, and low production efficiency. Therefore, this invention proposes a waste tire pyrolysis and utilization device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: Design a waste tire pyrolysis and utilization device, including a pyrolysis box, an upper cover rotatably mounted on the upper end of the pyrolysis box, a locking structure on the upper cover, a pyrolysis chamber for pyrolysis of waste tires inside the pyrolysis box, a heating mechanism for heating the waste tires on the upper part of the pyrolysis chamber, an oil collection tank cooperating with the heating mechanism at the lower end of the pyrolysis chamber, a sealing mechanism cooperating with the oil collection tank inside the pyrolysis box, an oil drain pipe on the oil collection tank, and an air outlet pipe on the oil collection tank.

[0006] Furthermore, the heating mechanism includes a heating chamber, in which a heating wire is disposed and wound around the inner wall of the heating chamber.

[0007] Furthermore, the oil collection tank includes an oil collection chamber, on which a filter screen is fixedly installed, and a retaining ring is provided on one side of the oil collection tank.

[0008] Furthermore, the sealing mechanism includes a sealing head, the upper end of which abuts against the retaining ring to form a sealing structure, and the upper end of the sealing head is provided with a protrusion, the upper end of which passes through the retaining ring and extends above it.

[0009] Furthermore, a support is fixedly installed inside the pyrolysis chamber, a conduit is fixedly installed on the support, a guide post is movably inserted into the conduit, and the upper end of the guide post is fixedly connected to the sealing head.

[0010] Furthermore, a spring is provided between the conduit and the sealing head, a groove is provided on the conduit, and a connecting part that cooperates with the groove is fixedly provided on the guide post.

[0011] Furthermore, a mounting plate is fixedly installed on the conduit, and a cylinder is fixedly installed on the mounting plate. The output shaft of the cylinder is fixedly connected to the connecting part.

[0012] Furthermore, a baffle is fixedly provided at the lower end of the sealing head, and the baffle is sleeved on the outside of the conduit.

[0013] Furthermore, the locking structure includes a connecting seat fixedly connected to the pyrolysis box, a threaded post rotatably disposed on the connecting seat, and a locking member threadedly connected to the threaded post to cooperate with the upper cover.

[0014] Furthermore, the upper cover has an opening that mates with the threaded post, the locking component includes a rotating part that is threadedly connected to the threaded post, the lower end of the rotating part is rotatably connected to a locking block, and the opening of the upper cover has a locking groove that mates with the locking block.

[0015] The waste tire pyrolysis and utilization device proposed in this invention has the following advantages: In this invention, the upper cover is fixed by setting a locking structure, so that the upper cover and the feed inlet of the pyrolysis chamber form a sealed structure to prevent air from seeping in. The pyrolysis chamber is sealed by setting a sealing mechanism to form a sealed structure, thereby ensuring that no air enters the pyrolysis chamber during the reaction, so that the pyrolysis chamber can be in an oxygen-deficient state. The liquid oil, gas and solid carbon black produced by the pyrolysis reaction are of good quality and the production efficiency is high. Secondly, in this invention, an oil collection tank is set up to collect the liquid oil produced by the pyrolysis reaction, and a filter screen is set up to filter it, preventing tire particles and solid carbon black from entering the oil collection tank and ensuring the purity of the liquid oil. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a waste tire pyrolysis and utilization device proposed in this invention; Figure 2 This is a schematic diagram of the structure of the top cover of the present invention; Figure 3 This is a schematic diagram of the pyrolysis chamber of the present invention; Figure 4 This is a schematic diagram of the enlarged structure of region A of the present invention; Figure 5 This is a schematic diagram of the sealing head of the present invention; Figure 6 This is a schematic diagram of the enlarged structure of region B of the present invention.

[0017] In the diagram: 1. Pyrolysis chamber; 2. Top cover; 3. Locking structure; 31. Connecting seat; 32. Threaded post; 33. Clamping element; 331. Rotating part; 332. Clamping block; 4. Pyrolysis chamber; 5. Heating mechanism; 51. Heating chamber; 52. Heating wire; 6. Oil collection tank; 61. Oil collection chamber; 62. Filter screen; 63. Retaining ring; 7. Sealing mechanism; 71. Sealing head; 72. Protrusion; 73. Support; 74. Conduit; 75. Guide post; 751. Connecting part; 76. Spring; 77. Slide groove; 78. Cylinder; 79. Baffle; 8. Oil drain pipe; 9. Air outlet pipe. Detailed Implementation

[0018] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0019] Reference Figure 1-6 A waste tire pyrolysis and utilization device includes a pyrolysis box 1, with a feed inlet at the upper end of the pyrolysis box 1 and a top cover 2 rotatably mounted on the upper end of the pyrolysis box 1. The top cover 2 is equipped with a locking structure 3, and a sealing gasket is fixedly mounted on the lower end of the top cover 2. The pyrolysis box 1 is equipped with a pyrolysis chamber 4 for pyrolysis of waste tires. A heating mechanism 5 for heating waste tires is mounted on the top of the pyrolysis chamber 4. An oil collection box 6 that cooperates with the heating mechanism 5 is mounted on the lower end of the pyrolysis chamber 4. A sealing mechanism 7 that cooperates with the oil collection box 6 is mounted inside the pyrolysis box 1. An oil discharge pipe 8 and an air outlet pipe 9 are mounted on the oil collection box 6. A discharge port is mounted on the bottom of the pyrolysis box 1, and an inclined plate is mounted inside the pyrolysis box 1 to discharge and collect solid carbon black. The oil collection box 6 is equipped with multiple air outlet pipes 9, and the pyrolysis box 1 is equipped with an air collection chamber that communicates with the multiple air outlet pipes 9. An air guide pipe is mounted on the air collection chamber.

[0020] In this invention, the upper cover 2 is fixed by a locking structure 3, so that the upper cover 2 and the feed inlet of the pyrolysis chamber 1 form a sealed structure to prevent air from seeping in. The pyrolysis chamber 4 is sealed by a sealing mechanism 7 to form a sealed structure, thereby ensuring that air does not enter the pyrolysis chamber 4 during the reaction. During pyrolysis, the pyrolysis chamber 4 is evacuated by the gas outlet pipe 9, so that an oxygen-deficient environment is formed inside the pyrolysis chamber 4. This results in high quality liquid oil, gas and solid carbon black produced by the pyrolysis reaction, and high production efficiency.

[0021] Furthermore, in this embodiment, the heating mechanism 5 includes a heating chamber 51, and a heating wire 52 is disposed inside the heating chamber 51. The heating wire 52 is wound around the inner wall of the heating chamber 51. The heating chamber is heated by the heating wire 52, thereby heating the tire rubber particles in the pyrolysis chamber 4, so that the tire rubber particles undergo a pyrolysis reaction.

[0022] In this embodiment, the oil collection tank 6 includes an oil collection chamber 61, on which a filter screen plate 62 is fixedly installed. A baffle ring 63 is provided on one side of the oil collection tank 6. The liquid oil produced by the pyrolysis reaction is collected through the oil collection chamber 61 and filtered through the filter screen plate 62 to prevent tire particles and solid carbon black from entering the oil collection chamber 61, thus ensuring the purity of the liquid oil. The liquid oil in the oil collection chamber 61 is discharged and collected along the oil drain pipe 8.

[0023] Furthermore, in this embodiment, the sealing mechanism 7 includes a sealing head 71. The upper end of the sealing head 71 abuts against the retaining ring 63 to form a sealing structure, preventing tire rubber particles from falling out of the pyrolysis chamber 4. The upper end of the sealing head 71 is provided with a protrusion 72, the upper end of which passes through the retaining ring 63 and extends above it, preventing tire rubber particles from accumulating on the sealing head 71, so that the tire rubber particles are fully heated.

[0024] In this embodiment, a support 73 is fixedly installed inside the pyrolysis chamber 1, and a conduit 74 is fixedly installed on the support 73. A guide post 75 is movably inserted into the conduit 74, and the upper end of the guide post 75 is fixedly connected to the sealing head 71. By setting the conduit 74 and the guide post 75 to cooperate, the movement trajectory of the sealing head 71 is restricted, ensuring that the sealing head 71 can abut against the retaining ring 63 to form a sealing structure when it moves upward.

[0025] It should be noted that, in this embodiment, a spring 76 is provided between the conduit 74 and the sealing head 71, a groove 77 is provided on the conduit 74, and a connecting part 751 that cooperates with the groove 77 is fixedly provided on the guide post 75. The movement range of the guide post 75 is limited by the cooperation between the connecting part 751 and the groove 77 to prevent the sealing head 71 from moving too far upward.

[0026] In this embodiment, a mounting plate is fixedly installed on the conduit 74, and a cylinder 78 is fixedly installed on the mounting plate. The output shaft of the cylinder 78 is fixedly connected to the connecting part 751. The cylinder 78 controls the connecting part 751 to move up and down, thereby driving the guide column 75 and the sealing head 71 to move up and down.

[0027] Furthermore, in this embodiment, a baffle 79 is fixedly provided at the lower end of the sealing head 71. The baffle 79 is sleeved on the outside of the conduit 74. By setting the baffle 79, the conduit 74 and the cylinder 78 are shielded to prevent the conduit 74 and the cylinder 78 from being blocked by the solid carbon black discharged from the pyrolysis chamber 4.

[0028] In this embodiment, the locking structure 3 includes a connecting seat 31 fixedly connected to the pyrolysis box 1. A threaded post 32 is rotatably provided on the connecting seat 31. A locking piece 33 that cooperates with the upper cover 2 is threadedly connected to the threaded post 32. By adjusting the position of the locking piece 33, the locking piece 33 abuts against the upper cover 2, ensuring the sealing between the upper cover 2 and the pyrolysis box 1.

[0029] More specifically, in this embodiment, the upper cover 2 has an opening that mates with the threaded post 32, and the locking member 33 includes a rotating part 331 that is threadedly connected to the threaded post 32. The lower end of the rotating part 331 is rotatably connected to a locking block 332. The opening of the upper cover 2 has a locking groove that mates with the locking block 332. By rotating the rotating part 331, the locking block 332 is moved. The rotating part 331 is threadedly connected to the threaded post 32 to prevent the rotating part 331 from being lifted by the upper cover 2 after the position is adjusted.

[0030] Working method: During operation, rotating part 331 drives the locking block 332 to move, so that the locking block 332 engages with the locking slot, limiting and fixing the upper cover 2. Heating wire 52 heats the heating chamber, thereby heating the tire rubber particles in the pyrolysis chamber 4, causing the tire rubber particles to undergo a pyrolysis reaction. The liquid oil produced by the pyrolysis reaction is collected through oil collection chamber 61 and filtered through filter screen 62 to prevent tire particles and solid carbon black from entering oil collection chamber 61. After pyrolysis is completed, cylinder 78 drives connecting part 751 and sealing head 71 to move down and separate from retaining ring 63, discharging solid carbon black from pyrolysis chamber 4.

[0031] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A waste tire pyrolysis and utilization device, comprising a pyrolysis chamber (1), characterized in that, The pyrolysis box (1) is rotatably equipped with a top cover (2), and a locking structure (3) is provided on the top cover (2). The pyrolysis box (1) is equipped with a pyrolysis chamber (4) for pyrolysis of waste tires. A heating mechanism (5) for heating waste tires is provided on the top of the pyrolysis chamber (4). An oil collection tank (6) that cooperates with the heating mechanism (5) is provided at the bottom of the pyrolysis chamber (4). A sealing mechanism (7) that cooperates with the oil collection tank (6) is provided in the pyrolysis box (1). An oil drain pipe (8) is provided on the oil collection tank (6). An air outlet pipe (9) is provided on the oil collection tank (6).

2. The waste tire pyrolysis and utilization device according to claim 1, characterized in that: The heating mechanism (5) includes a heating chamber (51), and a heating wire (52) is provided inside the heating chamber (51). The heating wire (52) is wound around the inner wall of the heating chamber (51).

3. The waste tire pyrolysis and utilization device according to claim 1, characterized in that: The oil collection tank (6) includes an oil collection chamber (61), on which a filter screen plate (62) is fixedly installed, and a retaining ring (63) is provided on one side of the oil collection tank (6).

4. The waste tire pyrolysis and utilization device according to claim 3, characterized in that: The sealing mechanism (7) includes a sealing head (71), the upper end of which abuts against the retaining ring (63) to form a sealing structure. The upper end of the sealing head (71) is provided with a protrusion (72), the upper end of which passes through the retaining ring (63) and extends above it.

5. The waste tire pyrolysis and utilization device according to claim 4, characterized in that: A bracket (73) is fixedly installed inside the pyrolysis box (1), and a conduit (74) is fixedly installed on the bracket (73). A guide post (75) is movably inserted into the conduit (74), and the upper end of the guide post (75) is fixedly connected to the sealing head (71).

6. The waste tire pyrolysis and utilization device according to claim 5, characterized in that: A spring (76) is provided between the conduit (74) and the plug (71). A groove (77) is provided on the conduit (74). A connecting part (751) that cooperates with the groove (77) is fixedly provided on the guide post (75).

7. The waste tire pyrolysis and utilization device according to claim 6, characterized in that: A mounting plate is fixedly installed on the conduit (74), and a cylinder (78) is fixedly installed on the mounting plate. The output shaft of the cylinder (78) is fixedly connected to the connecting part (751).

8. The waste tire pyrolysis and utilization device according to claim 6, characterized in that: The lower end of the plug (71) is fixedly provided with a baffle (79), which is sleeved on the outside of the conduit (74).

9. The waste tire pyrolysis and utilization device according to claim 1, characterized in that: The locking structure (3) includes a connecting seat (31) fixedly connected to the pyrolysis box (1), and a threaded post (32) is rotatably provided on the connecting seat (31). A clip (33) that cooperates with the upper cover (2) is threadedly connected to the threaded post (32).

10. The waste tire pyrolysis and utilization device according to claim 9, characterized in that: The upper cover (2) has an opening that mates with the threaded post (32). The clip (33) includes a rotating part (331) that is threadedly connected to the threaded post (32). The lower end of the rotating part (331) is rotatably connected to a clip (332). The opening of the upper cover (2) has a slot that mates with the clip (332).