Feeding device of cracking furnace

Abstract

The utility model discloses a feeding device of a cracking furnace. The feeding device comprises a main bracket and a blanking paddle, the powder storage box is of a box body structure with an upper opening, the powder storage box is erected and supported by a main support of a frame structure, the lower portion of the powder storage box is connected with a discharging hopper, a discharging opening of the discharging hopper is connected with a transversely-arranged closed cylinder to form a transition cylinder, the discharging hopper is communicated with the interior of the transition cylinder, and the transition cylinder is connected with a connecting pipe in a communicated mode. A pipe opening, connected with the transition barrel, of the connecting pipe is a material passing opening, the material passing opening is located under the discharging opening, a rotatable discharging paddle is arranged in the transition barrel, a main body of the discharging paddle is a paddle shaft, the paddle shaft is provided with paddle blades which are of a strip sheet structure and are circumferentially distributed, and one end of the paddle shaft is rotationally matched with a sealing piston. A hydraulic cylinder is fixed to the end, close to the sealing piston, of the transition barrel. A telescopic rod of the hydraulic cylinder is fixedly connected with the sealing piston. The cracking furnace has the beneficial effects that high-temperature and high-pressure gas in the cracking furnace cannot be leaked, and the rubber powder cracking efficiency of the cracking furnace is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of cracking furnace supporting mechanisms, in particular to a cracking furnace feeding device. Background Art

[0002] The rubber industry is one of the important basic industries of the national economy. It not only provides people with daily necessities, medical and other light industrial rubber products that are indispensable in daily life, but also provides various rubber production equipment or rubber parts to heavy industries and emerging industries such as mining, transportation, construction, machinery, and electronics. In recent years, the artificial rubber industry has developed rapidly, but at the same time, there are also problems of resource waste and environmental pollution. At present, the traditional treatment methods for waste rubber mainly include abandonment, burial and burning, which will cause serious environmental pollution and public hazards; in recent years, emerging treatment methods such as recycling and regenerating rubber, cracking to produce fuel gas and carbon black have gradually replaced traditional treatment methods.

[0003] The patent document with publication number CN207091364U (comparative document 1) discloses a rotary cracking furnace charging device, including a storage box, a feed hopper, a feeding cylinder and a propulsion cylinder, wherein the feed hopper is arranged at the bottom of the storage box and is connected to the storage box, the feeding cylinder and the propulsion cylinder are respectively arranged on both sides of the feed hopper and are both connected to the feed hopper, the aperture of the feed cylinder is larger than the aperture of the propulsion cylinder, and a reciprocating material pushing structure is arranged in the propulsion cylinder. The rotary cracking furnace charging device of this structure can add materials to the rotary cracking furnace midway during the operation of the rotary cracking furnace, thereby improving the working efficiency.

[0004] The patent document with publication number CN102776017A (comparative document 2) mentions the working state of the cracking furnace: during the process of cracking the cracking furnace to produce fuel oil, gas and carbon black, the temperature inside the cracking furnace is about 300°C to 600°C, and the pressure inside the furnace is about 0.3MPa to 3MPa.

[0005] However, the feeding device in Comparative Document 1 does not include a sealing mechanism, and is directly arranged on the side wall of the cracking furnace. This will cause the high-temperature and high-pressure airflow in the cracking furnace to easily escape from the feeding structure in Comparative Document 1, causing part of the temperature in the cracking furnace to be lost and pressure to leak, resulting in the high-temperature and high-pressure environment of the cracking furnace being unable to be maintained constantly, thereby affecting the cracking efficiency of the cracking furnace on rubber powder. Utility Model Content

[0006] The utility model aims to provide a cracking furnace feeding device to solve the technical problem that the high temperature and high pressure environment in the furnace cannot be kept constant due to design defects of the above-mentioned background technology materials, thereby affecting the cracking efficiency.

[0007] The above technical objectives of the utility model are achieved through the following technical solutions:

[0008] A cracking furnace feeding device comprises: a main support and a feeding paddle; the powder storage box is a box structure with an upper opening, the powder storage box is supported by the main support of a frame structure, a feeding hopper is supported below the powder storage box, a horizontal closed cylinder is connected to the feeding port of the feeding hopper to form a transition tube, the feeding hopper and the transition tube are internally connected, a connecting pipe is connected to the transition tube, the pipe opening where the connecting pipe is connected to the transition tube is a feeding port, the feeding port is located directly below the feeding port, a rotatable feeding paddle is arranged in the transition tube, the main body of the feeding paddle is a paddle shaft, the paddle shaft is provided with paddle blades with a strip structure and circumferential distribution, one end of the paddle shaft is rotatably matched with a sealing piston, a hydraulic cylinder is fixed to the end of the transition tube close to the sealing piston, and the telescopic rod of the hydraulic cylinder is fixedly connected to the sealing piston.

[0009] Furthermore, in order to enable the propeller shaft to have the ability to rotate at a uniform speed, a sub-bracket with a frame structure is fixed to the side of the main bracket, a reducer is fixed on the sub-bracket, the propeller shaft protrudes out of the transition tube and is coaxially connected to the output shaft of the reducer, the input shaft of the reducer and the output shaft of a motor are coaxially fixed, and the motor is fixed on the sub-bracket.

[0010] Furthermore, in order to compensate for the length error of the paddle shaft when the paddle shaft and the sealing piston move, the paddle shaft and the output shaft of the reducer are always in transmission connection. The output shaft of the reducer is a rotating tube shaft with a sleeve structure, and the rotating tube shaft has a cavity with a prismatic structure to form a prismatic cavity. A sliding prism with a prismatic structure is fixed to the side of the paddle shaft close to the reducer. The longitudinal outer contour of the sliding prism is consistent with the longitudinal outer contour of the prismatic cavity, and the sliding prism is slidably embedded in the prismatic cavity of the rotating tube shaft.

[0011] In order to enable the utility model to feed multiple groups of cracking furnaces at the same time, the number of the lower hoppers is at least two groups, all of which are received under the powder storage box and form a sealed connection with the side wall of the powder storage box, the number of connecting pipes is consistent with the number of lower hoppers, and the feeding port of each group of connecting pipes is located directly below the feeding port of a group of lower hoppers.

[0012] Furthermore, in order to enable the paddle to supply materials to multiple groups of feeding ports at the same time, the length of the paddle is greater than the total width of all feeding ports.

[0013] Furthermore, in order to enable the sealing piston to seal multiple groups of feeding ports and feeding ports at the same time, the length of the sealing piston is greater than the total width of all feeding ports.

[0014] Furthermore, in order to maintain uniform feeding between each group of connecting pipes and the discharge hopper, and to prevent mutual interference during feeding, when the paddles are located directly below all the discharge ports, a spacer with a circular structure is provided at the interval position of each group of discharge ports and is fixed on the paddle shaft and the paddle blades, and the outer diameter of the spacer is consistent with the inner diameter of the transition tube.

[0015] Furthermore, in order to prevent the rubber powder particles from leaking from the side of the blade close to the reducer and affecting the movement and reset of the blade, a barrier plate with a disc structure is fixed to the side of the blade close to the reducer, and the outer diameter of the barrier plate is consistent with the inner diameter of the transition cylinder.

[0016] Furthermore, in order to facilitate the feeding of the sealing piston, the side of the sealing piston close to the reducer is configured to have a conical structure to form a conical head.

[0017] In summary, the utility model has the following beneficial effects:

[0018] It will not cause leakage of high-temperature and high-pressure gas in the cracking furnace, thereby ensuring the cracking efficiency of the cracking furnace for rubber powder: by setting up a movable sealing piston, the external hydraulic system is used to drive the hydraulic cylinder to extend, and the telescopic rod of the hydraulic cylinder drives the sealing piston and the unloading paddle to move toward the reducer side as a whole, until the sealing piston seals all the feeding ports and unloading ports, and then the cracking furnace is started; because the upper opening of the connecting pipe is closed and the connecting pipe and the feed port of the cracking furnace are sealed, the feeding port will not affect the generation of the high-temperature and high-pressure environment of the cracking furnace, and there will not be pressure leakage like the comparative documents, causing the high temperature and high pressure of the cracking furnace to not continue to affect the cracking efficiency of the cracking furnace for rubber powder. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 It is a schematic diagram of the top view structure of the utility model;

[0021] Figure 3 It is a schematic diagram of the partially cut structure of the utility model during material cutting;

[0022] Figure 4 It is a schematic diagram of the partially cutaway structure of the utility model during sealing;

[0023] Figure 5 This is a schematic diagram of the structure of the middle material retaining ring on the material discharge paddle of the utility model;

[0024] In the figure, 1. main bracket; 2. discharge paddle; 3. powder storage box; 4. discharge hopper; 5. transition cylinder; 6. connecting pipe; 7. reducer; 8. rotating pipe shaft; 9. hydraulic cylinder; 10. motor; 11. sealing piston; 12. auxiliary bracket; 21. paddle shaft; 22. paddle blade; 23. sliding prism; 24. barrier plate; 25. spacer; 41. discharge port; 61. feeding port; 81. prismatic cavity; 91. telescopic rod; 111. conical head. DETAILED DESCRIPTION

[0025] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0026] Example:

[0027] See also Figure 1-Figure 5 , the utility model provides a technical solution:

[0028] A cracking furnace feeding device comprises: a main support 1 and a feeding paddle 2; the powder storage box 3 is a box structure with an upper opening, the powder storage box 3 is supported by the main support 1 of the frame structure, a feeding hopper 4 is supported below the powder storage box 3, a feeding port 41 of the feeding hopper 4 is connected to a horizontally placed closed cylinder to form a transition tube 5, the feeding hopper 4 and the transition tube 5 are internally conductive, a connecting pipe 6 is conductively connected to the transition tube 5, the pipe opening where the connecting pipe 6 is connected to the transition tube 5 is a feeding port 61, the feeding port 61 is located directly below the feeding port 41, a rotatable feeding paddle 2 is arranged in the transition tube 5, the main body of the feeding paddle 2 is a paddle shaft 21, the paddle shaft 21 is provided with paddle blades 22 with a strip structure and circumferential distribution, one end of the paddle shaft 21 is rotatably matched with a sealing piston 11, a hydraulic cylinder 9 is fixed to one end of the transition tube 5 close to the sealing piston 11, and a telescopic rod 91 of the hydraulic cylinder 9 is fixedly connected to the sealing piston 11.

[0029] In order to enable the propeller shaft 21 to have the ability to rotate at a uniform speed, a sub-bracket 12 with a frame structure is fixed to the side of the main bracket 1, and a reducer 7 is fixed on the sub-bracket 12. The propeller shaft 21 protrudes out of the transition tube 5 and is coaxially connected to the output shaft of the reducer 7. The input shaft of the reducer 7 and the output shaft of a motor 10 are coaxially fixed, and the motor 10 is fixed on the sub-bracket 12.

[0030] In order to compensate for the length error of the paddle shaft 21 when the paddle shaft 21 and the sealing piston 11 move, the paddle shaft 21 is always in transmission connection with the output shaft of the reducer 7. The output shaft of the reducer 7 is a rotating tube shaft 8 with a sleeve structure. The rotating tube shaft 8 has a cavity with a prismatic structure to form a prismatic cavity 81. A sliding prism 23 with a prismatic structure is fixed to the side of the paddle shaft 21 close to the reducer 7. The longitudinal outer contour of the sliding prism 23 is consistent with the longitudinal outer contour of the prismatic cavity 81, and the sliding prism 23 is slidably embedded in the prismatic cavity 81 of the rotating tube shaft 8.

[0031] In order to enable the utility model to feed multiple groups of cracking furnaces at the same time, the number of the lower hoppers 4 is at least two groups, all of the lower hoppers 4 are received under the powder storage box 3 and form a sealed connection with the side wall of the powder storage box 3, the number of connecting pipes 6 is consistent with the number of lower hoppers 4, and the feeding port 61 of each group of connecting pipes 6 is located directly below the feeding port 41 of a group of lower hoppers 4.

[0032] In order to enable the paddle 22 to supply materials to multiple groups of feeding ports 61 at the same time, the length of the paddle 22 is greater than the total width of all the feeding ports 41 .

[0033] In order to enable the sealing piston 11 to simultaneously seal multiple groups of feed ports 61 and feed ports 41, the length of the sealing piston 11 is greater than the total width of all feed ports 41 (if there are intervals between the feed ports 41, the total width of the feed ports 41 includes the intervals between adjacent feed ports 41).

[0034] In order to ensure that the feeding between each group of connecting pipes 6 and the discharge hopper 4 is uniform and does not interfere with each other during feeding, when the paddles 22 are located directly below all the discharge ports 41, a spacer 25 with a circular structure is provided at the interval position of each group of discharge ports 41 and is fixed on the paddle shaft 21 and the paddles 22. The outer diameter of the spacer 25 is consistent with the inner diameter of the transition tube 5.

[0035] In order to prevent the rubber powder particles from leaking from the side of the blade 22 close to the reducer 7 and affecting the movement and reset of the blade 22, a barrier sheet 24 with a disc structure is fixed to the side of the blade 22 close to the reducer 7, and the outer diameter of the barrier sheet 24 is consistent with the inner diameter of the transition cylinder 5.

[0036] In order to facilitate the feeding of the sealing piston 11 , the side of the sealing piston 11 close to the reducer 7 is configured to have a conical structure to form a conical head 111 .

[0037] Brief description of the usage process:

[0038] When in use, each group of connecting pipes 6 is connected to a feed port of a cracking furnace and is kept in sealed connection with the feed port of the cracking furnace. The cracking raw material - rubber powder (generally rubber powder made from waste tire waste) is stored in the powder storage box 3. The rubber powder in the powder storage box 3 enters all the lower hoppers 4 due to gravity.

[0039] When it is necessary to feed the cracking furnace, the hydraulic cylinder 9 is driven to retract by an external hydraulic system, and the telescopic rod 91 of the hydraulic cylinder 9 drives the sealing piston 11 and the feeding paddle 2 to move toward the hydraulic cylinder 9 as a whole, so that the paddle 22 is located below all the feeding ports 41, and the spacer 25 on the feeding paddle 2 is located at the interval position of all the feeding ports 41;

[0040] Because the paddle shaft 21 maintains a sliding connection with the rotating tube shaft 8 through the sliding prism 23, it will not limit the discharge paddle 2 when it moves. Because the sliding prism 23 is a prism structure, the paddle shaft 21 and the rotating tube shaft 8 maintain a sliding connection and can also transmit rotational motion. Therefore, at this time, the motor 10 is energized to rotate it, and the motor drives the rotating tube shaft 8 to rotate through the reducer 7. The rotating tube shaft 8 drives the paddle shaft 21 to rotate through the sliding prism 23. The paddle shaft 21 drives the paddle blades 22 thereon to rotate. Because the paddle blades 22 are strip structures and are circumferentially distributed on the paddle shaft 21, the rotating paddle blades 22 will gradually transport the rubber powder at the discharge port 41 of the discharge hopper 4 to the feed port 61, and because of gravity, the rubber powder is transported from the connecting pipe 6 to each group of cracking furnaces. After the feeding reaches the required amount (this is an interval value, not an exact value), the motor 10 is turned off;

[0041] At this time, it is necessary to seal the feeding port 61 of the connecting pipe 6 to form a high temperature and high pressure environment in the cracking furnace, and close the feeding port 41 of the feeding hopper 4 to stop feeding. At this time, the hydraulic cylinder 9 is extended by the external hydraulic system, and the telescopic rod 91 of the hydraulic cylinder 9 drives the sealing piston 11 and the feeding paddle 2 to move toward the reducer 7 side as a whole until the sealing piston 11 seals all the feeding ports 61 and the feeding ports 41, and then the cracking furnace is started;

[0042] Because the upper opening of the connecting pipe 6 is closed and the connecting pipe 6 and the feed port of the cracking furnace are sealed, the feed port 61 will not affect the generation of a high temperature and high pressure environment of the cracking furnace, and there will not be pressure leakage like in the reference document, causing the high pressure of the cracking furnace to be insufficient and affecting the cracking efficiency of the cracking furnace on the rubber powder.

[0043] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A cracking furnace feeding device, comprising: A main support (1), a material discharge paddle (2), and a powder storage box (3); the characteristics are as follows: the powder storage box (3) is a box structure with an upper opening, the powder storage box (3) is supported by the main support (1) of the frame structure, a material discharge hopper (4) is supported below the powder storage box (3), a material discharge port (41) of the material discharge hopper (4) is connected to a horizontally placed closed cylinder to form a transition tube (5), the material discharge hopper (4) and the transition tube (5) are internally conductive, a connecting pipe (6) is conductively connected to the transition tube (5), and the connecting pipe (6) is connected to the transition tube (5) through a pipe The opening is a material passing opening (61), and the material passing opening (61) is located directly below the material discharge opening (41). A rotatable material discharge paddle (2) is arranged in the transition tube (5), and the main body of the material discharge paddle (2) is a paddle shaft (21). The paddle shaft (21) is provided with paddle blades (22) with a strip structure and distributed circumferentially. One end of the paddle shaft (21) is rotatably matched with a sealing piston (11). A hydraulic cylinder (9) is fixed to one end of the transition tube (5) close to the sealing piston (11), and a telescopic rod (91) of the hydraulic cylinder (9) is fixedly connected to the sealing piston (11).

2. A cracking furnace feeding device according to claim 1, characterized in that: A sub-bracket (12) of a frame structure is fixed to the side of the main bracket (1), a reducer (7) is fixed to the sub-bracket (12), a propeller shaft (21) protrudes out of the transition tube (5) and is coaxially connected to the output shaft of the reducer (7), the input shaft of the reducer (7) and the output shaft of a motor (10) are coaxially fixed, and the motor (10) is fixed to the sub-bracket (12).

3. A cracking furnace feeding device according to claim 2, characterized in that: The output shaft of the reducer (7) is a rotating tube shaft (8) with a sleeve structure, the rotating tube shaft (8) has a hollow cavity with a prism structure to form a prismatic cavity (81), a sliding prism (23) with a prism structure is fixed on the side of the paddle shaft (21) close to the reducer (7), the longitudinal outer contour of the sliding prism (23) is consistent with the longitudinal outer contour of the prismatic cavity (81), and the sliding prism (23) is slidably embedded in the prismatic cavity (81) of the rotating tube shaft (8).

4. A cracking furnace feeding device according to claim 1, characterized in that: The number of the lower hoppers (4) is at least two groups, all of the lower hoppers (4) are received below the powder storage box (3) and form a sealed connection with the side wall of the powder storage box (3), the number of the connecting pipes (6) is consistent with the number of the lower hoppers (4), and the feeding port (61) of each group of connecting pipes (6) is correspondingly located directly below the feeding port (41) of a group of lower hoppers (4).

5. A cracking furnace feeding device according to claim 4, characterized in that: The length of the paddle (22) is greater than the total width of all the material discharge openings (41).

6. A cracking furnace feeding device according to claim 4, characterized in that: The length of the sealing piston (11) is greater than the total width of all the feed openings (41).

7. A cracking furnace feeding device according to claim 4, characterized in that: When the blades (22) are located directly below all the feed openings (41), a spacer (25) with a circular structure is provided at the interval position of each group of feed openings (41) and is fixed on the blade shaft (21) and the blade (22), and the outer diameter of the spacer (25) is consistent with the inner diameter of the transition tube (5).

8. A cracking furnace feeding device according to claim 1, characterized in that: In order to affect the movement and reset of the blade (22), a barrier sheet (24) with a disc structure is fixed on one side of the blade (22) close to the reducer (7), and the outer diameter of the barrier sheet (24) is consistent with the inner diameter of the transition cylinder (5).

9. A cracking furnace feeding device according to claim 1, characterized in that: The side of the sealing piston (11) close to the reducer (7) is arranged in a conical structure to form a conical head (111).

Images