Feeding sealing device of rotary cylindrical cracking kettle for waste rubber

Abstract

The utility model discloses a feed sealing device of a rotary cylinder cracking kettle for waste rubber, which comprises a cylinder cracking kettle (1), a feed port (2) is formed at one end of the cylinder cracking kettle (1), a belt weigher (3) and a belt conveyor (4) are sequentially arranged outside the feed port (2), a first-stage stock bin (5) is arranged below the end of the belt weigher (3), and a second-stage stock bin (6) is arranged below the end of the belt conveyor (4). A feeding hopper matched with the belt weigher (3) is arranged at the top of the first-stage stock bin (5), the lower end of the first-stage stock bin (5) is connected with a second-stage stock bin (7) through a first-stage feeding pipe (6), the lower end of the second-stage stock bin (7) is connected with the feeding port (2) through a second-stage feeding pipe (8), the first-stage feeding pipe (6) and the second-stage feeding pipe (8) are both connected with discharging valves (9), and a nitrogen sealing system is arranged outside the second-stage stock bin (7). According to the feeding device, feeding can be performed on the cylindrical cracking kettle in a sealed state, so that high-temperature oil gas in the cylindrical cracking kettle is prevented from overflowing in the feeding process.

Description

Technical Field

[0001] This utility model relates to a feeding device for a cylindrical pyrolysis reactor, and more particularly to a feeding and sealing device for a waste rubber rotary cylindrical pyrolysis reactor. Background Technology

[0002] Currently, the common method for treating waste rubber is to use a rotary cylindrical pyrolysis reactor to perform high-temperature pyrolysis. This process, within a sealed container, produces usable pyrolysis oil, methane gas, and carbon black, thus achieving the harmless treatment and recycling of waste rubber. However, during the process, the waste rubber needs to be periodically dumped into the rotary pyrolysis reactor using conveyor belts and belt scales. This causes the high-temperature oil and gas inside the reactor to easily leak out during the feeding process. This poses environmental pollution and fire hazards, and the leaked oil and gas can also heat the external feeding equipment, increasing the likelihood of heat damage.

[0003] Therefore, a device is needed to prevent the high-temperature oil and gas from overflowing from the cylindrical pyrolysis reactor during the feeding process. Utility Model Content

[0004] The purpose of this invention is to provide a feeding and sealing device for a rotary cylindrical pyrolysis reactor for waste rubber. It enables feeding into the reactor while it is sealed, thereby preventing the overflow of high-temperature oil and gas from the reactor during the feeding process.

[0005] The technical solution of this utility model is as follows: A feeding and sealing device for a rotary cylindrical pyrolysis reactor for waste rubber includes a cylindrical pyrolysis reactor. One end of the cylindrical pyrolysis reactor forms a feeding port. A belt scale and a belt conveyor are sequentially arranged outside the feeding port. A primary silo is arranged below the end of the belt scale. A feeding hopper that works with the belt scale is arranged at the top of the primary silo. A secondary silo is connected to the lower end of the primary silo via a primary feeding pipe. The lower end of the secondary silo is connected to the feeding port via a secondary feeding pipe. Discharge valves are connected to both the primary and secondary feeding pipes. A nitrogen sealing system is arranged outside the secondary silo.

[0006] The belt scale is used to weigh waste rubber and continuously transport it to the primary silo.

[0007] The primary feed pipe is used to keep the feed pipe closed during the feeding of the secondary silo and to prevent air from escaping from the cylindrical pyrolysis reactor.

[0008] The secondary feed pipe is used to keep the feed pipe closed during the feeding of the primary silo and to prevent air from escaping from the cylindrical pyrolysis reactor.

[0009] The nitrogen sealing system is used to control the gas pressure in the secondary silo and prevent air exchange between the cylindrical pyrolysis reactor and the external environment.

[0010] In the aforementioned feed sealing device for a rotary cylindrical pyrolysis reactor for waste rubber, the nitrogen sealing system includes a suction pipe and a nitrogen sealing pipe connected to the outside of the secondary silo. The suction pipe is used to extract the secondary silo before feeding the primary silo, preventing the waste gas remaining in the secondary silo from overflowing outward through the primary silo. The nitrogen sealing pipe is used to fill the secondary silo with nitrogen before feeding the primary silo, thereby keeping the gas pressure in the secondary silo stable.

[0011] In the aforementioned feeding sealing device for a rotary cylindrical pyrolysis reactor for waste rubber, the cylindrical pyrolysis reactor is provided with an insulated box.

[0012] In the aforementioned feeding sealing device for a rotary cylindrical pyrolysis reactor for waste rubber, both the primary and secondary silos are externally connected to fixed supports. The fixed supports and the primary silo are interconnected via a weighing sensor, which is used to measure the weight of the waste rubber in the primary silo.

[0013] In the aforementioned feed sealing device for a rotary cylindrical pyrolysis reactor for waste rubber, the primary feed pipe and the secondary feed pipe have the same structure, both including a first pipe body and a second pipe body that are separately arranged. The middle part of the first pipe body is connected to a discharge valve. The first pipe body and the second pipe body are nested inside and outside each other. The outside of the first pipe body and the second pipe body are connected to each other through a telescopic pipe section.

[0014] In the aforementioned feed sealing device for a rotary cylindrical pyrolysis reactor for waste rubber, the discharge valve is a pneumatic push-pull valve.

[0015] Compared with the prior art, this utility model has the following characteristics:

[0016] (1) Through the structural cooperation of the primary silo, secondary silo, unloading valve and nitrogen sealing system, this utility model enables the primary silo to first send a certain amount of waste rubber into the secondary silo, and then the secondary silo to feed the cylindrical pyrolysis reactor. During the feeding process, by closing the unloading valve on the primary feed pipe, the secondary silo can be isolated from the outside air, thereby preventing the possibility of gas overflow from the cylindrical pyrolysis reactor. After the feeding is completed, the nitrogen sealing system can draw and fill the gas in the secondary silo with nitrogen, thereby removing the high-temperature oil and gas that overflowed into the secondary silo during the feeding process, avoiding the possibility of this gas overflowing outwards during the feeding process of the primary silo. With the above cooperation, this utility model can realize the feeding of the cylindrical pyrolysis reactor in a closed environment, and after the feeding is completed, the overflowing high-temperature oil and gas is concentrated and extracted, effectively preventing the overflow of high-temperature oil and gas in the cylindrical pyrolysis reactor during the feeding process.

[0017] (2) By combining the structure of the fixed bracket and the weighing sensor, it can weigh the waste rubber stored in the primary silo. On the one hand, it can control the belt scale to stop conveying after the primary silo is full to prevent the waste rubber from overflowing; on the other hand, it can convey a certain amount of waste rubber to the secondary silo each time it is fed, thereby ensuring the feeding stability of the cylindrical pyrolysis reactor.

[0018] (3) By limiting the structure of the primary and secondary feed pipes, it is possible to achieve mutual insertion between the primary and secondary silos and between the secondary silo and the cylindrical pyrolysis reactor while ensuring the sealing effect, thereby facilitating the early installation and later maintenance of the primary and secondary silos; at the same time, the secondary feed pipe can also achieve the movable connection between the secondary silo and the cylindrical pyrolysis reactor after it is installed, thereby preventing the possibility of cracking and damage at the connection between the secondary silo and the cylindrical pyrolysis reactor due to temperature difference;

[0019] Therefore, this invention can feed material into a cylindrical pyrolysis reactor under sealed conditions, thereby preventing the overflow of high-temperature oil and gas inside the cylindrical pyrolysis reactor during the feeding process. Attached Figure Description

[0020] Figure 1 This is a structural schematic diagram of Example 1;

[0021] Figure 2 This is a structural schematic diagram of Example 2;

[0022] Figure 3 This is a schematic diagram of the connection between the first tube and the second tube in Example 2.

[0023] The labels in the attached diagram are as follows: 1-Cylindrical pyrolysis reactor, 2-Inlet, 3-Belt scale, 4-Belt conveyor, 5-Primary silo, 6-Primary feed pipe, 7-Secondary silo, 8-Secondary feed pipe, 9-Discharge valve, 10-Suction pipe, 11-Nitrogen sealing pipe, 12-Fixed bracket, 13-Weighing sensor, 14-First pipe body, 15-Second pipe body, 16-Telescopic pipe section. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments, but this should not be construed as limiting the present invention.

[0025] Example 1. A feeding sealing device for a waste rubber rotary cylindrical pyrolysis reactor, configured as follows: Figure 1As shown, the reactor includes a cylindrical pyrolysis vessel 1. One end of the cylindrical pyrolysis vessel 1 forms a feed inlet 2. A belt scale 3 and a belt conveyor 4 are sequentially arranged outside the feed inlet 2. A primary silo 5 is located below the end of the belt scale 3. A feed hopper that works with the belt scale 3 is located at the top of the primary silo 5. The lower end of the primary silo 5 is connected to a closed secondary silo 7 via a primary feed pipe 6. The lower end of the secondary silo 7 is connected to the feed inlet 2 via a secondary feed pipe 8. Discharge valves 9 are connected to both the primary feed pipe 6 and the secondary feed pipe 8. A nitrogen sealing system is provided outside the secondary silo 7.

[0026] The belt scale 3 is used to weigh the waste rubber and continuously transport it to the primary silo 5;

[0027] The primary feed pipe 6 is used to keep the secondary silo 7 closed during feeding and to prevent air from escaping from the cylindrical pyrolysis reactor 1.

[0028] The secondary feeding pipe 8 is used to keep the primary silo 5 closed during feeding and to prevent air from escaping from the cylindrical pyrolysis reactor 1.

[0029] The nitrogen sealing system is used to control the air pressure in the secondary silo 7 and prevent air exchange between the cylindrical pyrolysis reactor 1 and the external environment.

[0030] Both the primary feeding pipe 6 and the secondary feeding pipe 8 are rigid heat-insulated pipes. The two ends of the primary feeding pipe 6 are fixedly connected to the primary silo 5 and the secondary silo 7, and the two ends of the secondary feeding pipe 8 are fixedly connected to the secondary silo 7 and the cylindrical pyrolysis reactor 1, thereby ensuring complete sealing of each connection part.

[0031] The nitrogen sealing system includes a suction pipe 10 and a nitrogen sealing pipe 11 connected to the outside of the secondary silo 7. The suction pipe 10 is used to extract the secondary silo 7 before the primary silo 5 is fed, to prevent the exhaust gas remaining in the secondary silo 7 from overflowing out of the primary silo 5. The nitrogen sealing pipe 11 is used to fill the secondary silo 7 with nitrogen before the primary silo 5 is fed, so as to keep the gas pressure in the secondary silo 7 stable.

[0032] The cylindrical pyrolysis reactor 1 is provided with an insulated box on the outside, which is used to keep the cylindrical pyrolysis reactor 1 warm, thereby reducing the energy consumption generated by the cylindrical pyrolysis reactor 1 during the pyrolysis process.

[0033] Both the primary silo 5 and the secondary silo 7 are externally connected to fixed supports 12. The fixed supports 12 and the primary silo 5 are interconnected by a weighing sensor 13, which is used to measure the weight of waste rubber in the primary silo 5.

[0034] The unloading valve 9 is a pneumatic push-pull valve.

[0035] In this embodiment, the waste rubber is first transported by the belt conveyor 4 to the belt scale 3, and then the belt scale 3 weighs the waste rubber and pours it into the primary silo 5. When the primary silo 5 accumulates a specified weight of waste rubber, the weighing sensor 13 controls the belt scale 3 and the belt conveyor 4 to stop transporting and wait for subsequent instructions.

[0036] When feeding is required into the cylindrical pyrolysis reactor 1, the discharge valve 9 of the primary feed pipe 6 is opened first, while the discharge valve of the secondary feed pipe 8 is closed, causing the waste rubber in the primary silo 5 to be poured into the secondary silo 7. After feeding into the primary silo 5, the discharge valve 9 of the primary feed pipe 6 is closed, while the discharge valve of the secondary feed pipe 8 is opened, causing the waste rubber in the secondary silo 7 to fall into the cylindrical pyrolysis reactor 1, completing the feeding process. After feeding into the secondary silo 7, the discharge valve of the secondary feed pipe 8 is closed, and the nitrogen sealing system is activated, causing the suction pipe 10 and the nitrogen sealing pipe 11 to respectively evacuate and fill the secondary silo 7 with nitrogen, thereby removing the high-temperature oil and gas that overflowed from the cylindrical pyrolysis reactor 1 into the secondary silo 7 during the feeding process, and subsequently filling it with nitrogen to maintain a stable pressure in the secondary silo 7. This prevents the overflow of high-temperature oil and gas.

[0037] With the above-mentioned coordination, this embodiment can maintain the separation between the cylindrical pyrolysis reactor 1 and the external air during the discharge process, thereby improving the stability and environmental friendliness of the waste rubber during the treatment process.

[0038] Example 2. A feeding sealing device for a waste rubber rotary cylindrical pyrolysis reactor, configured as follows: Figure 2-3 As shown, the reactor includes a cylindrical pyrolysis vessel 1. One end of the cylindrical pyrolysis vessel 1 forms a feed inlet 2. A belt scale 3 and a belt conveyor 4 are sequentially arranged outside the feed inlet 2. A primary silo 5 is located below the end of the belt scale 3. A feed hopper that works with the belt scale 3 is located at the top of the primary silo 5. The lower end of the primary silo 5 is connected to a closed secondary silo 7 via a primary feed pipe 6. The lower end of the secondary silo 7 is connected to the feed inlet 2 via a secondary feed pipe 8. Discharge valves 9 are connected to both the primary feed pipe 6 and the secondary feed pipe 8. A nitrogen sealing system is provided outside the secondary silo 7.

[0039] The belt scale 3 is used to weigh the waste rubber and continuously transport it to the primary silo 5;

[0040] The primary feed pipe 6 is used to keep the secondary silo 7 closed during feeding and to prevent air from escaping from the cylindrical pyrolysis reactor 1.

[0041] The secondary feeding pipe 8 is used to keep the primary silo 5 closed during feeding and to prevent air from escaping from the cylindrical pyrolysis reactor 1.

[0042] The nitrogen sealing system is used to control the air pressure in the secondary silo 7 and prevent air exchange between the cylindrical pyrolysis reactor 1 and the external environment.

[0043] The nitrogen sealing system includes a suction pipe 10 and a nitrogen sealing pipe 11 connected to the outside of the secondary silo 7. The suction pipe 10 is used to extract the secondary silo 7 before the primary silo 5 is fed, to prevent the exhaust gas remaining in the secondary silo 7 from overflowing out of the primary silo 5. The nitrogen sealing pipe 11 is used to fill the secondary silo 7 with nitrogen before the primary silo 5 is fed, so as to keep the gas pressure in the secondary silo 7 stable.

[0044] The cylindrical pyrolysis reactor 1 is provided with an insulated box on the outside, which is used to keep the cylindrical pyrolysis reactor 1 warm, thereby reducing the energy consumption generated by the cylindrical pyrolysis reactor 1 during the pyrolysis process.

[0045] Both the primary silo 5 and the secondary silo 7 are externally connected to fixed supports 12. The fixed supports 12 and the primary silo 5 are interconnected by a weighing sensor 13, which is used to measure the weight of waste rubber in the primary silo 5. The top of the fixed support 12 extends above the primary silo 5 and is connected to a belt scale 3 and a belt conveyor 4. One side of the fixed support 12 forms an operating platform for workers to stand and load / unload.

[0046] The primary feeding pipe 6 and the secondary feeding pipe 8 have the same structure, each including a first pipe body 14 and a second pipe body 15 arranged in a split manner. Both the first pipe body 14 and the second pipe body 15 are rigid heat-insulated pipes. The first pipe body 14 of the primary feeding pipe 6 is fixedly connected to the lower end of the primary silo 5, and the second pipe body 15 of the primary feeding pipe 6 is fixedly connected to the upper end of the secondary silo 7. The first pipe body 14 of the secondary feeding pipe 8 is fixedly connected to the lower end of the secondary silo 7, and the second pipe body 15 of the secondary feeding pipe 8 is fixedly connected to the inlet 2 of the cylindrical pyrolysis reactor 1. The middle part of the first pipe body 14 is connected to the discharge valve 9. The first pipe body 14 and the second pipe body 15 are nested and partially overlapped. The exterior of the first pipe body 14 and the second pipe body 15 are connected to each other by a telescopic pipe section 16. The telescopic pipe section 16 completely covers the overlapping part along the length direction, and the two ends of the telescopic pipe section 16 are respectively sealed to the outer walls of the first pipe body 14 and the second pipe body 15.

[0047] The unloading valve 9 is a pneumatic push-pull valve.

[0048] Compared to Example 1, this example further defines the structure of the primary feed pipe 6 and the secondary feed pipe 8, allowing the primary silo 5, the secondary silo 7, and the cylindrical pyrolysis reactor 1 to be interlocked during installation. This facilitates assembly and disassembly for operators and enables a movable connection between the cylindrical pyrolysis reactor 1 and the secondary silo 7, preventing damage caused by thermal expansion and contraction at the connection points. The telescopic joint 16 seals the joint between the first pipe body 14 and the second pipe body 15, ensuring the environmental benefits of this example.

Claims

1. A feeding and sealing device for a rotary cylindrical pyrolysis reactor for waste rubber, comprising a cylindrical pyrolysis reactor (1), wherein one end of the cylindrical pyrolysis reactor (1) forms a feed inlet (2), and a belt scale (3) and a belt conveyor (4) are sequentially arranged outside the feed inlet (2), characterized in that: The belt scale (3) is provided with a primary silo (5) at the lower end. The top of the primary silo (5) is provided with a feed hopper that works with the belt scale (3). The lower end of the primary silo (5) is connected to a secondary silo (7) via a primary feed pipe (6). The lower end of the secondary silo (7) is connected to a feed inlet (2) via a secondary feed pipe (8). Both the primary feed pipe (6) and the secondary feed pipe (8) are connected to a discharge valve (9). The secondary silo (7) is provided with a nitrogen sealing system on its exterior. The belt scale (3) is used to weigh the waste rubber and then continuously transport it to the primary silo (5); The primary feed pipe (6) is used to keep the feed pipe closed during the feeding of the secondary silo (7) and to prevent air from escaping from the cylindrical pyrolysis reactor (1); The secondary feed pipe (8) is used to keep the primary silo (5) closed during feeding and to prevent air from escaping from the cylindrical pyrolysis reactor (1); The nitrogen sealing system is used to control the air pressure in the secondary silo (7) and prevent air exchange between the cylindrical pyrolysis vessel (1) and the external environment.

2. The feeding sealing device for a waste rubber rotary cylindrical pyrolysis reactor according to claim 1, characterized in that: The nitrogen sealing system includes a suction pipe (10) and a nitrogen sealing pipe (11) connected to the outside of the secondary silo (7). The suction pipe (10) is used to extract the secondary silo (7) before feeding the primary silo (5) to prevent the waste gas remaining in the secondary silo (7) from overflowing out through the primary silo (5). The nitrogen sealing pipe (11) is used to fill the secondary silo (7) with nitrogen before feeding the primary silo (5) to keep the gas pressure in the secondary silo (7) stable.

3. The feeding sealing device for a waste rubber rotary cylindrical pyrolysis reactor according to claim 1, characterized in that: The cylindrical pyrolysis reactor (1) is equipped with an insulated box on the outside.

4. The feeding sealing device for a waste rubber rotary cylindrical pyrolysis reactor according to claim 1, characterized in that: Both the primary silo (5) and the secondary silo (7) are externally connected to fixed supports (12). The fixed supports (12) and the primary silo (5) are interconnected by a weighing sensor (13), which is used to measure the weight of waste rubber in the primary silo (5).

5. The feeding sealing device for a waste rubber rotary cylindrical pyrolysis reactor according to claim 4, characterized in that: The primary feeding pipe (6) and the secondary feeding pipe (8) have the same structure, both including a first pipe body (14) and a second pipe body (15) that are set in a split manner. The middle part of the first pipe body (14) is connected to the unloading valve (9). The first pipe body (14) and the second pipe body (15) are nested inside and outside. The outside of the first pipe body (14) and the second pipe body (15) are connected to each other through a telescopic pipe section (16).

6. The feeding sealing device for a waste rubber rotary cylindrical pyrolysis reactor according to claim 1, characterized in that: The unloading valve (9) is a pneumatic push-pull valve.

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