A pyrolysis mechanism for processing waste tires

Abstract

The utility model relates to a pyrolysis mechanism for processing waste tires, comprising a pyrolysis kettle, an annular grinding head and a feed-in and feed-out mechanism. The discharge port of the pyrolysis kettle is connected to the feed-in and feed-out mechanism through the annular grinding head. The annular grinding head comprises a rotating part connected to the pyrolysis kettle and a fixed part connected to the feed-in and feed-out mechanism. A cooling structure is arranged in the fixed part, and the cooling structure can cool the heat generated at the annular grinding head. By arranging a cooling structure on the fixed part between the pyrolysis kettle and the annular grinding head, the annular grinding head is cooled, thereby avoiding the seal between the two from being damaged under high temperature conditions, ensuring the elasticity of the oil-sealed graphite packing, minimizing the high temperature effect of thermal cracking, and improving the sealing cycle of the grinding head. Moreover, multiple replacements of the oil-sealed graphite packing are avoided, thereby reducing the cost of equipment operation.

Description

Technical Field

[0001] The utility model relates to the technical field of waste tire processing, in particular to a pyrolysis mechanism used for processing waste tires. Background Art

[0002] With the massive development of the automobile industry, more and more waste tires are discarded at will, causing pollution. The advent of waste tire thermal cracking and refining equipment can perfectly process waste tires to obtain valuable products such as tire oil, carbon black and steel wire, and the processing process is environmentally friendly and harmless. At present, the treatment of waste rubber generally adopts the thermal cracking method. Thermal cracking refers to the reaction of destroying the high molecular bonding state of organic matter by heating and decomposing it into low molecular substances. The products of the reaction are gas, oil and coke. At present, thermal cracking technology has been widely used in various waste treatment fields, such as thermal cracking treatment of waste tires, urban garbage and medical waste treatment.

[0003] In order to ensure that the waste tires are transported forward during the pyrolysis process and that the materials are heated evenly during the reaction process, a pyrolysis kettle is generally used as a reaction vessel for the pyrolysis of waste tires. That is, the waste tires are fed into the pyrolysis kettle through a feeding device for rotational pyrolysis, and the materials are fed into the pyrolysis kettle through an annular grinding head to improve the pyrolysis efficiency. However, a dynamic seal is used for the seal between the annular grinding head and the pyrolysis kettle. Moreover, during the rotation of the pyrolysis kettle, the dynamic seal between the pyrolysis kettle and the static fixed part of the sealing annular grinding head is particularly important.

[0004] At present, dynamic sealing is mainly achieved by extruding multiple turns of high-temperature resistant graphite packing, but this sealing method has the following shortcomings: first, the elasticity of the graphite packing is poor. Once the temperature is high, the sealing performance will deteriorate, which will affect the efficiency of thermal cracking and may even cause safety hazards in severe cases; in addition, in order to achieve better sealing, the graphite packing needs to be replaced regularly, which greatly increases the cost of equipment operation. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] In view of the above-mentioned shortcomings and deficiencies of the prior art, the utility model provides a pyrolysis mechanism for waste tire processing, which solves the technical problem that the elasticity of graphite packing is poor. Once the temperature is high, the sealing performance will deteriorate, which will affect the efficiency of thermal cracking and may even cause safety hazards in severe cases. In addition, in order to achieve better sealing, the graphite packing needs to be replaced regularly, which greatly increases the cost of equipment operation.

[0007] (II) Technical solution

[0008] In order to achieve the above-mentioned purpose, the main technical solutions adopted by the utility model include:

[0009] On the one hand, a pyrolysis mechanism for waste tire processing includes a pyrolysis kettle, an annular grinding head and a feeding and discharging mechanism;

[0010] The discharge port of the pyrolysis kettle is connected to the feeding and discharging mechanism through the annular grinding head;

[0011] The annular grinding head includes a rotating part connected to the pyrolysis kettle and a fixed part connected to the feeding and discharging mechanism;

[0012] A cooling structure is arranged in the fixing part, and the cooling structure can cool down the heat generated by the annular grinding head.

[0013] Optionally, the cooling structure includes an annular groove opened on the fixed part, and the annular groove is used for the flow of cooling water to provide a one-time cooling of the fixed part, and along the radial direction of the annular groove, a liquid inlet and a liquid outlet connected to the annular groove are respectively opened on the outer peripheral wall of the fixed part.

[0014] Optionally, the cooling structure further comprises a nitrogen ring groove connected to the outside, and the nitrogen ring groove is opened along the axial direction of the fixing part, and nitrogen is introduced into the nitrogen ring groove through an air inlet to perform secondary cooling of the fixing part.

[0015] Optionally, a sealing portion is provided between the rotating portion and the fixed portion;

[0016] The sealing portion is used to seal between the rotating portion and the fixed portion.

[0017] Optionally, the fixing portion is further provided with an adjustment mechanism;

[0018] The adjusting mechanism comprises an adjusting rubber ring, an adjusting gland and a locking member;

[0019] The adjusting rubber ring is arranged in the groove body at one end of the fixing part, and the adjusting pressure cover is locked on the adjusting rubber ring through the locking member, and the adjusting pressure cover abuts against the adjusting rubber ring.

[0020] Optionally, the feeding and discharging mechanism comprises an "L"-shaped connector connected to one end surface of the fixing portion, and one end of the "L"-shaped connector is connected to a discharging barrel body;

[0021] At least one sealing gate valve is coaxially arranged on the outer peripheral wall of the discharge barrel body;

[0022] The sealing gate valve is used to block or open the discharge port of the discharge barrel body.

[0023] Optionally, the sealing gate valve comprises a valve driver and a valve body;

[0024] The valve driving member is arranged outside the discharging cylinder, and the protruding end of the valve driving member is connected to the valve body;

[0025] The valve driving member is used to drive the valve body to pass through the discharge barrel body and block the discharge port, so as to form a closed space between the discharge barrel body, the "L"-shaped connector, the annular grinding head and the pyrolysis kettle.

[0026] Optionally, three sealing gate valves are provided, and the three sealing gate valves are arranged at equal intervals between the material inlet of the discharge barrel body and the material outlet of the discharge barrel body.

[0027] Optionally, the material feeding and discharging mechanism further includes a material sensor;

[0028] The material sensor is arranged at one end of the discharge barrel body close to the material inlet, and is used to detect the amount of material in the discharge barrel body and feed back to the controller. The controller can receive the signal and control the action of the valve drive.

[0029] (III) Beneficial effects

[0030] The beneficial effects of the utility model are as follows: the utility model is a pyrolysis mechanism for waste tire processing, by providing a cooling structure on the fixed part between the pyrolysis kettle and the annular grinding head, so as to cool the annular grinding head, thereby avoiding damage to the seal between the two under high temperature conditions, ensuring the elasticity of the graphite packing, minimizing the high temperature effect of thermal cracking, and improving the efficiency of thermal cracking. Moreover, it avoids the need to replace the graphite packing multiple times, thereby reducing the cost of equipment operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a schematic diagram of the main structure of the pyrolysis mechanism for waste tire processing of the utility model;

[0032] Figure 2 for Figure 1 A right view structural diagram of ;

[0033] Figure 3 for Figure 1 A schematic diagram of the cross-sectional structure of an annular grinding head;

[0034] Figure 4 for Figure 3 A magnified detail of the circled “A”.

[0035] [Description of Reference Numerals]

[0036] 1: pyrolysis kettle; 2: annular grinding head; 21: rotating part; 22: fixed part; 221: annular groove; 222: nitrogen ring groove; 23: sealing part; 231: carbon fiber packing; 232: guide belt; 233: "O"-shaped sealing ring; 234: pressure ring; 24: adjustment mechanism; 241: adjustment rubber ring; 242: adjustment gland; 243: locking piece; 3: feeding and discharging mechanism; 31: "L"-shaped connector; 32: discharging barrel body; 321: first material bin; 322: second material bin; 323: third material bin; 33: sealing gate valve; 331: valve drive; 332: valve body; 34: material sensor. DETAILED DESCRIPTION

[0037] In order to better explain the present invention and facilitate understanding, the present invention is described in detail below in conjunction with the accompanying drawings through specific embodiments. The directional terms "upper", "lower", "inner" and "outer" mentioned herein are based on the orientation of the drawings.

[0038] Reference Figure 1-4 As shown, a pyrolysis mechanism for waste tire processing proposed in an embodiment of the utility model includes a pyrolysis kettle 1, an annular grinding head 2 and a feeding and discharging mechanism 3. The discharge port of the pyrolysis kettle 1 is connected to the feeding and discharging mechanism 3 through the annular grinding head 2. The annular grinding head 2 includes a rotating part 21 connected to the pyrolysis kettle 1 and a fixed part 22 connected to the feeding and discharging mechanism 3. A cooling structure is arranged in the fixed part 22, and the cooling structure can cool the heat generated at the annular grinding head 2.

[0039] Furthermore, the cooling structure includes an annular groove 221 provided on the fixed portion 22, the annular groove 221 is provided for the flow of cooling water, so as to cool the fixed portion 22 once, and along the radial direction of the annular groove 221, a liquid inlet and a liquid outlet connected to the annular groove 221 are provided on the outer peripheral wall of the fixed portion 22 respectively. Specifically, the liquid inlet of the annular groove 221 is used to be connected to the water outlet of the external circulating water tank. The water inlet of the circulating water tank is connected to the liquid outlet of the annular groove 221, and the circulating water tank has the function of cooling water, and can cool high-temperature water to a lower temperature, and then pass it into the annular groove 221.

[0040] Furthermore, the cooling structure further includes a nitrogen annular groove 222 connected to the outside, and the nitrogen annular groove 222 is opened along the axial direction of the fixing part 22, and nitrogen is introduced into the nitrogen annular groove 222 through the air inlet for secondary cooling of the fixing part 22. The nitrogen annular groove 222 can be further cooled and sealed by introducing nitrogen.

[0041] Furthermore, a sealing portion 23 is provided between the rotating portion 21 and the fixed portion 22. The sealing portion 23 is used to seal between the rotating portion 21 and the fixed portion 22. Specifically, the sealing portion 23 includes a carbon fiber packing 231, and the carbon fiber packing 231 is arranged in a sealing groove on an end surface of the fixed portion 22 close to the feeding and discharging mechanism 3, and is screwed and pressed by a pressure ring 234, thereby playing a guiding role.

[0042] See also Figure 4 As shown, the sealing part also includes a guide belt 232 sleeved between the rotating part 21 and the fixed part 22, which is used to play an axial guiding role and prevent it from rotating in the radial direction. An "O"-shaped sealing ring 233 is also provided to improve the sealing effect.

[0043] Furthermore, an adjustment mechanism 24 is also provided on the fixing portion 22. The adjustment mechanism 24 includes an adjustment rubber ring 241, an adjustment pressure cover 242 and a locking member 243. The adjustment rubber ring 241 is provided in the groove body at one end of the fixing portion 22, and the adjustment pressure cover 242 is locked on the adjustment rubber ring 241 by the locking member 243, and the adjustment pressure cover 242 abuts against the adjustment rubber ring 241. The setting of the adjustment mechanism 24 can be appropriately adjusted according to the tightness of the sealing portion 23, so as to always ensure that the sealing effect is in the best state.

[0044] Furthermore, the feeding and discharging mechanism 3 includes an "L"-shaped connector 31 connected to one end surface of the fixing portion 22, and one end of the "L"-shaped connector 31 is connected to a discharging barrel body 32. At least one sealing gate valve 33 is coaxially arranged on the outer peripheral wall of the discharging barrel body 32. The sealing gate valve 33 is used to block or open the discharging port of the discharging barrel body 32.

[0045] Furthermore, the feeding and discharging mechanism 3 also includes a material sensor 34. The material sensor 34 is arranged at one end of the discharging barrel body 32 near the material inlet, and is used to detect the amount of material in the discharging barrel body 32 and feed it back to the controller, which can receive the signal and control the valve driving member 331 to operate.

[0046] Here, it should be noted that the purpose of setting a sealing gate valve 33 at the front end of the discharge port is to improve the sealing effect. It is mainly reflected in: the existing discharge port is directly connected to the external equipment, resulting in poor sealing effect at the discharge port, thereby reducing the pyrolysis effect of the pyrolysis kettle 1. Compared with the present embodiment, a sealing gate valve is set at the front end of the discharge port to always ensure that there is material in the material bin, thereby preventing the gas from escaping and improving the airtightness. When the material bin is about to be full, the material sensor 34 will send a valve opening signal to the controller. After receiving the signal, the controller converts it into a start signal to control the valve drive 331 to control the valve body 332 to open, and then discharge the material. After discharge, the valve body 332 is closed again to form a seal.

[0047] Furthermore, the sealing gate valve 33 includes a valve driving member 331 and a valve body 332. The valve driving member 331 is arranged outside the discharge barrel, and the protruding end of the valve driving member 331 is connected to the valve body 332. The valve driving member 331 is used to drive the valve body 332 to pass through the discharge barrel body 32 to block the discharge port, so that a closed space is formed between the discharge barrel body 32, the "L"-shaped connector 31, the annular grinding head 2 and the pyrolysis kettle 1.

[0048] Further, three sealing gate valves 33 are provided, and the three sealing gate valves 33 are arranged at equal intervals between the material inlet of the discharge barrel body 32 and the material outlet of the discharge barrel body 32. Figure 2 As shown, the purpose of having three sealing gate valves 33 is to better control the amount of materials, which is convenient for control and use. At the same time, the discharge barrel body 32 is divided into three material bins, namely the first material bin 321, the second material bin 322 and the third material bin 323, which is convenient for the rapid formation of a closed space, which can be formed according to the amount of materials. And it is ensured that there are always materials in the second and third material bins to achieve a sealing effect.

[0049] A sealing method for a pyrolysis mechanism for waste tire processing, the sealing method comprising the following steps:

[0050] S1, the pyrolysis kettle 1 discharges the waste tires after pyrolysis. The waste tires are discharged from the discharge port of the pyrolysis kettle 1.

[0051] S2, material sealing. The material discharged from the discharge port of the pyrolysis kettle 1 in step S1 is sealed by the rotating part 21 of the annular grinding head.

[0052] S3, material output, the material sealed in step S2 is discharged through the material input and output mechanism 3.

[0053] The utility model provides a pyrolysis mechanism for waste tire processing. By providing a cooling structure on the fixed part between the pyrolysis kettle 1 and the annular grinding head 2, the annular grinding head 2 is cooled, thereby preventing the seal between the two from being damaged under high temperature conditions, ensuring the elasticity of the graphite packing, minimizing the high temperature effect of thermal cracking, and improving the sealing of thermal cracking. Moreover, it avoids the need to replace the graphite packing multiple times, thereby reducing the cost of equipment operation.

[0054] In the description of the present utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0055] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0056] In the present utility model, unless otherwise clearly specified and limited, when a first feature is “on” or “below” a second feature, it may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, when a first feature is “above”, “above” or “above” a second feature, it may be that the first feature is directly above or obliquely above the second feature, or it may simply mean that the first feature is higher in level than the second feature. When a first feature is “below”, “below” or “below” a second feature, it may be that the first feature is directly below or obliquely below the second feature, or it may simply mean that the first feature is lower in level than the second feature.

[0057] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "embodiment", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0058] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A pyrolysis mechanism for waste tire processing, characterized in that: It comprises a pyrolysis kettle (1), an annular grinding head (2) and a material feeding and discharging mechanism (3); The discharge port of the pyrolysis kettle (1) is connected to the feeding and discharging mechanism (3) via the annular grinding head (2); The annular grinding head (2) comprises a rotating part (21) connected to the pyrolysis kettle (1) and a fixed part (22) connected to the feeding and discharging mechanism (3); A cooling structure is provided in the fixing portion (22), and the cooling structure is capable of cooling the heat generated by the annular grinding head (2).

2. The pyrolysis mechanism for waste tire processing according to claim 1, characterized in that: The cooling structure comprises an annular groove (221) formed on the fixed portion (22), the annular groove (221) being used for the flow of cooling water to cool the fixed portion (22) once, and a liquid inlet and a liquid outlet, which are in communication with the annular groove (221), are formed on the outer peripheral wall of the fixed portion (22) along the radial direction of the annular groove (221).

3. The pyrolysis mechanism for waste tire processing according to claim 2, characterized in that: The cooling structure further comprises a nitrogen annular groove (222) connected to the outside, and the nitrogen annular groove (222) is opened along the axial direction of the fixing part (22), and nitrogen is introduced into the nitrogen annular groove (222) through an air inlet for secondary cooling of the fixing part (22).

4. The pyrolysis mechanism for waste tire processing according to claim 1, characterized in that: A sealing portion (23) is provided between the rotating portion (21) and the fixed portion (22); The sealing portion (23) is used to seal between the rotating portion (21) and the fixed portion (22).

5. The pyrolysis mechanism for waste tire processing according to claim 4, characterized in that: The fixing portion (22) is also provided with an adjustment mechanism (24); The adjustment mechanism (24) comprises an adjustment rubber ring (241), an adjustment pressure cover (242) and a locking member (243); The adjusting rubber ring (241) is arranged in a groove body at one end of the fixing portion (22), and the adjusting pressure cover (242) is locked onto the adjusting rubber ring (241) through the locking member (243), and the adjusting pressure cover (242) and the adjusting rubber ring (241) are abutted against each other.

6. The pyrolysis mechanism for waste tire processing according to claim 5, characterized in that: The feeding and discharging mechanism (3) comprises an "L"-shaped connector (31) connected to one end surface of the fixing portion (22); one end of the "L"-shaped connector (31) is connected to a discharging barrel body (32); At least one sealing gate valve (33) is coaxially arranged on the outer peripheral wall of the discharge barrel body (32); The sealing gate valve (33) is used to block or open the discharge port of the discharge barrel body (32).

7. The pyrolysis mechanism for waste tire processing according to claim 6, characterized in that: The sealing gate valve (33) comprises a valve driving component (331) and a valve body (332); The valve driving member (331) is arranged outside the discharge barrel, and the protruding end of the valve driving member (331) is connected to the valve body (332); The valve driving member (331) is used to drive the valve body (332) to pass through the discharge barrel body (32) to seal the discharge port, so that a closed space is formed between the discharge barrel body (32), the "L"-shaped connecting head (31), the annular grinding head (2) and the pyrolysis kettle (1).

8. The pyrolysis mechanism for waste tire processing according to claim 7, characterized in that: Three sealing gate valves (33) are provided, and the three sealing gate valves (33) are arranged at equal intervals between the material inlet of the discharge barrel body (32) and the material outlet of the discharge barrel body (32).

9. The pyrolysis mechanism for waste tire processing according to claim 8, characterized in that: The material feeding and discharging mechanism (3) further includes a material sensor (34); The material sensor (34) is arranged at one end of the discharge barrel body (32) close to the material inlet, and is used to detect the amount of material in the discharge barrel body (32) and feed back to the controller. The controller can receive the signal and control the action of the valve drive (331).

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