Oil-rich coal pyrolysis product conveying device

Abstract

The invention belongs to the technical field of coal chemical industry, and particularly relates to an oil-rich coal pyrolysis product conveying device. The oil-rich coal pyrolysis product conveying device comprises a fixed shell, a rotating shaft and an outer wall spiral blade, wherein the rotating shaft and the outer wall spiral blade are coaxially arranged in the shell; a sieve plate is slidably mounted on the inner wall of the discharge port, a crushing slide block is slidably arranged on the sieve plate, an inclined annular plate is fixed to the position, close to the discharge port, of the fixed shell, a transmission vertebral plate is slidably assembled on the outer wall of the rotating shaft, a transmission rod is matched with the inclined annular plate in an abutting mode, and the vertebral plate is matched with the inclined face of the crushing slide block in an abutting mode. Bulk agglomerated materials are intercepted by the screening plate, the rotating shaft drives the transmission vertebral plate to rotate, horizontal thrust is converted into vertical pressure through transmission of the inclined annular plate and the inclined face, the crushing sliding block is driven to extrude and crush the block materials, and the materials are prevented from blocking a discharging port and affecting subsequent procedures.

Description

Technical Field

[0001] This invention belongs to the field of coal chemical technology, specifically referring to a device for conveying the pyrolysis products of oil-rich coal. Background Technology

[0002] The core value of oil-rich coal lies in the simultaneous extraction of high-value-added oil and gas products such as coal-based tar and coal gas through medium-low temperature air-isolated pyrolysis process, while producing high-calorific-value semi-coke solid products. The semi-coke products generated after the pyrolysis of oil-rich coal have the characteristics of high temperature, uneven particle size, easy agglomeration and caking, and high dust content. Its transportation link is the core process for the continuous and stable operation of the pyrolysis production line. Traditional oil-rich coal pyrolysis product conveying devices are prone to clogging problems. The semi-coke material after pyrolysis is easily agglomerated and clumps due to the uniformity of the pyrolysis reaction and the effect of cooling temperature control. Simply relying on screw pushing cannot achieve material particle size refinement. After large pieces of material reach the discharge end with the conveying process, they are very likely to block the discharge port, causing the conveying process to be interrupted or even damaging the conveying equipment. Summary of the Invention

[0003] This invention overcomes the shortcomings of existing technologies and provides a conveying device for oil-rich coal pyrolysis products. By setting a transmission cone and transmission rod at the end of the rotating shaft, and forming a contacting structure with the inclined ring plate on the fixed shell, the rotational power of the rotating shaft is converted into a horizontal reciprocating thrust of the transmission cone by the periodic sliding of the transmission rod along the slope of the inclined ring plate. Then, through the inclined tangential contact structure between the transmission cone and the crushing slider, the horizontal thrust is efficiently converted into a vertical extrusion force, realizing the synchronous extrusion and crushing of large pieces of semi-coke and agglomerated semi-coke retained on the screening plate. The device completes material screening and crushing of large pieces of material in real time, ensuring that the output particle size meets the standard and eliminating the problem of discharge port blockage.

[0004] The technical solution adopted in this invention is as follows: This solution provides a fixed shell, a rotating shaft, and spiral blades. The fixed shell enables sealed conveying, preventing high-temperature semi-coke from cooling and agglomerating, dust spillage, and oxidation loss. The rotating shaft is coaxially rotatably connected inside the fixed shell, transmitting power. The spiral blades are helically fixed on the circumferential wall of the rotating shaft, rotating with the shaft to generate axial thrust on the oil-rich coal pyrolysis semi-coke material, achieving directional conveying from the inlet to the outlet. An outlet is fixedly provided at the lower part of the circumferential wall at one end of the fixed shell, communicating with the fixed shell for discharging qualified semi-coke material after screening and crushing. A slidable screen plate is connected to the inner wall to screen the incoming semi-coke. Qualified fine material passes through the screen holes, while large pieces and agglomerated materials are intercepted. A sliding bushing is fixed on the top wall of the screen plate to provide vertical sliding guidance. A crushing slider is slidably connected to the sliding bushing to crush large pieces of semi-coke on the screen plate. An inclined ring plate is fixed on the side wall of the fixed housing near the discharge port to provide an inclined slope, which converts the rotational motion into the horizontal linear motion of the transmission cone plate. A transmission cone plate is slidably connected to the circumferential wall of the rotating shaft. The two sides of the transmission cone plate respectively abut against the inclined ring plate and the crushing slider plate, converting the horizontal thrust into vertical crushing pressure.

[0005] Furthermore, a groove is provided on the inner wall of the discharge port to ensure that the sieve plate slides only vertically without tilting or jamming, providing movement space for vibration reset. The sieve plate is slidably disposed in the groove, and a first reset spring is fixedly provided at the bottom end of the sieve plate. The bottom end of the first reset spring is fixedly connected to the inner bottom wall of the groove. When pressed, it stores energy, and when the pressure is released, it pushes the sieve plate upward to reset and generate vibration.

[0006] Furthermore, a guide rod is fixedly provided inside the crushing slider, which cooperates with the sliding bushing to restrict the crushing slider to only make vertical linear movements. A second return spring is fixedly provided at the bottom end of the guide rod, and the other end of the second return spring is fixedly connected to the inner bottom wall of the sliding bushing. It stores energy under pressure, and pushes the guide rod and the crushing slider to return to their original position when the pressure is released.

[0007] Furthermore, a reset spring is rotatably connected to the side wall of the transmission vertebra plate, and the other end of the reset spring is rotatably connected to the inner side wall of the fixed housing. When the inclined ring plate is in the low slope section, the transmission vertebra plate is pulled to reset in the opposite direction, thereby relieving the compression on the broken slider.

[0008] Furthermore, a transmission rod is fixedly provided on the side wall of the transmission vertebra plate, which slides along the inclined ring plate slope to transmit the slope thrust.

[0009] Furthermore, the crushing slider is located directly above the sieve plate, the sidewall of the crushing slider is inclined, and the transmission cone plate and the inclined surface of the crushing slider abut against each other.

[0010] Furthermore, a feed inlet is fixedly provided on the upper part of the circumferential wall at one end of the fixed shell. The feed inlet is connected to the fixed shell and is used to receive the high-temperature semi-coke products discharged from the pyrolysis equipment and introduce them into the inner cavity of the fixed shell.

[0011] The beneficial effects achieved by the present invention using the above structure are as follows: (1) During the material conveying process, the rotating shaft rotates continuously at a constant speed, driving the transmission cone plate at its end to rotate synchronously. The transmission rod fixed to the side wall of the transmission cone plate slides periodically along the slope of the inclined ring plate during the rotation process. Each time the transmission rod slides from the low slope to the high slope, a complete crushing stroke is completed. (2) The transmission rod is subjected to the axial thrust of the inclined ring plate slope, which drives the transmission cone plate to move horizontally along the axis of rotation. Subsequently, the inclined surface of the transmission cone plate is tangentially engaged with the side wall inclined surface of the crushing slider. Under the guidance of the inclined surface, the horizontal thrust is converted into vertical downward pressure, which pushes the crushing slider down along the sliding bushing to effectively crush and break up large pieces of semi-coke or agglomerates. (3) The first reset spring pushes the sieve plate upward along the slide groove to reset to the initial position, which will generate a small vibration. This vibration can clear the fine semi-coke powder and blockage particles adhering to the sieve holes, and solve the problem of easy blockage of the sieve plate. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of a conveying device for oil-rich coal pyrolysis products proposed in this invention; Figure 2 This is a schematic cross-sectional view of a conveying device for oil-rich coal pyrolysis products proposed in this invention. Figure 3 for Figure 2 Enlarged view of a portion of point A in the middle.

[0013] The components are as follows: 1. Fixed housing; 2. Rotating shaft; 3. Spiral blade; 4. Feed inlet; 5. Discharge outlet; 6. Slide groove; 7. Screen plate; 8. First return spring; 9. Sliding bushing; 10. Crushing slider; 11. Guide rod; 12. Second return spring; 13. Inclined ring plate; 14. Transmission cone plate; 15. Transmission rod; 16. Return tension spring.

[0014] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof. Detailed Implementation

[0015] 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. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0016] Example 1: Please refer to Figures 1-3 A conveying device for oil-rich coal pyrolysis products includes a fixed housing 1, a rotating shaft 2, and spiral blades 3. The rotating shaft 2 is coaxially rotatably connected inside the fixed housing 1. The spiral blades 3 are spirally fixedly arranged on the circumferential wall of the rotating shaft 2. A feed inlet 4 is fixedly provided on the upper part of the circumferential wall at one end of the fixed housing 1, and a discharge outlet 5 is fixedly provided on the lower part of the circumferential wall at the other end of the fixed housing 1. Both the feed inlet 4 and the discharge outlet 5 are connected to the fixed housing 1. A groove 6 is formed on the inner wall of the discharge outlet 5. A screen plate 7 is slidably connected in the groove 6. A first return spring 8 is fixedly provided at the bottom end of the screen plate 7. The bottom end of the first return spring 8 is fixedly connected to the inner bottom wall of the groove 6. A sliding bushing 9 is fixedly provided on the top wall of the screen plate 7. A crushing slider 10 is slidably connected to the sliding bushing 9. The crushing slider 10 is located directly above the sieve plate 7. The side wall of the crushing slider 10 is inclined. A guide rod 11 is fixedly installed inside the crushing slider 10. A second return spring 12 is fixedly installed at the bottom end of the guide rod 11. The other end of the second return spring 12 is fixedly connected to the inner bottom wall of the sliding bushing 9. An inclined ring plate 13 is fixedly installed on the side wall of the fixed housing 1 near the discharge port 5. A transmission cone plate 14 is slidably installed on the circumferential wall of the rotating shaft 2. A transmission rod 15 is fixedly installed on the side wall of the transmission cone plate 14. The transmission rod 15 abuts against the inclined ring plate 13. The transmission cone plate 14 abuts against the inclined surface of the crushing slider 10. A return tension spring 16 is rotatably connected to the side wall of the transmission cone plate 14. The other end of the return tension spring 16 is rotatably connected to the inner side wall of the fixed housing 1.

[0017] In this embodiment, the high-calorific-value semi-coke product generated after the pyrolysis reaction of oil-rich coal falls from the discharge end of the pyrolysis equipment into the feed inlet 4 of this device and enters the internal cavity of the fixed shell 1 by its own weight. At this time, the power equipment drives the rotating shaft 2 to rotate at a constant speed. The rotating shaft 2 drives the spiral blades 3 on the outer wall to rotate synchronously and continuously. The spiral blades 3 push the semi-coke material accumulated inside the fixed shell 1 from one end of the feed inlet 4 to one end of the discharge outlet 5 at a constant speed and stably through the spiral thrust. The whole process realizes the closed high-temperature material transportation, avoiding the semi-coke cooling and clumping and dust pollution. When the semi-coke material is pushed to the end of the fixed shell 1, it falls directly onto the sieve plate 7 inside the discharge port 5. Fine and qualified semi-coke with a particle size smaller than the through hole diameter of the sieve plate 7 passes directly through the through hole and is discharged from the bottom of the discharge port 5 to enter the subsequent collection or processing steps. Large pieces of semi-coke and agglomerated semi-coke with an excessive particle size are intercepted by the sieve plate 7 and remain on the upper part of the sieve plate 7, waiting for crushing, thus preventing large pieces of material from clogging the discharge port 5 and affecting subsequent processes. While the material is being conveyed, the rotating shaft 2 continues to rotate, causing the transmission cone 14 at the end to rotate synchronously. The transmission rod 15 on the side wall of the transmission cone 14 slides continuously along the inclined slope of the inclined ring plate 13. When the transmission rod 15 slides to the high slope position of the inclined ring plate 13, the slope thrust of the inclined ring plate 13 pushes the transmission rod 15 and the transmission cone 14 to move horizontally along the axis of the rotating shaft 2 toward the crushing slider 10. During this process, the reset spring 16 is gradually stretched to store elastic reset force. During the horizontal movement of the transmission cone 14, the inclined surface of the transmission cone 14 continuously squeezes the outer inclined surface of the crushing slider 10. Under the guidance of the inclined surface, the horizontal thrust is converted into vertical downward pressure, pushing the crushing slider 10 and the guide rod 11 to slide vertically downward along the sliding sleeve 9. During this process, the second reset spring 12 is compressed, and at the same time, the extrusion surface at the bottom of the crushing slider 10 gradually approaches the large piece of semi-coke on the upper part of the screen plate 7. As the transmission cone plate 14 continues to advance, the downward squeezing force of the crushing slider 10 gradually increases, which strongly squeezes and crushes the large pieces of semi-coke and agglomerated semi-coke that remain on the screen plate 7, crushing them to a particle size smaller than the standard size of the through hole of the screen plate 7, so as to meet the requirements of subsequent use; during the squeezing and crushing process, the screen plate 7 slides down vertically in a small amount along the slide groove 6 under pressure, compressing the first return spring 8 at the bottom. When the transmission rod 15 rotates with the transmission cone 14 and slides to the low slope position of the inclined ring plate 13, the slope thrust of the inclined ring plate 13 disappears. At this time, the return spring 16 releases its elastic force and quickly pulls the transmission cone 14 to move horizontally in the opposite direction along the rotation axis 2, away from the crushing slider 10, and releases the inclined surface compression on the crushing slider 10. Then, the first return spring 8 and the second return spring 12 release their elastic potential energy simultaneously. The first return spring 8 pushes the screen plate 7 to reset vertically upward along the slide groove 6, and the second return spring 12 pushes the guide rod 11 and the crushing slider 10 to reset vertically upward along the sliding bushing 9. The crushing slider 10 separates from the screen plate 7 and restores the initial distance. During this reset process, the first reset spring 8 causes the screen plate 7 to vibrate slightly, which can effectively clear the fine semi-coke adhering to the screen holes and prevent the screen holes from clogging. At the same time, all the qualified semi-coke after crushing is discharged through the screen plate 7. The new semi-coke material is continuously conveyed to the discharge port 5 by the spiral blade 3 and enters the next round of conveying, screening and crushing cycle, realizing the integrated operation of continuous conveying, real-time crushing and automatic screening, which greatly improves the processing efficiency and material utilization rate of oil-rich coal pyrolysis products.

[0018] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the invention, such designs should fall within the protection scope of the present invention.

Claims

1. A conveying device for oil-rich coal pyrolysis products, comprising a fixed housing (1), a rotating shaft (2), and helical blades (3), wherein the rotating shaft (2) is coaxially rotatably connected to the fixed housing (1), and the helical blades (3) are helically fixedly arranged on the circumferential wall of the rotating shaft (2), characterized in that, A discharge port (5) is fixedly provided on the lower part of the circumferential wall at one end of the fixed housing (1). The discharge port (5) is connected to the fixed housing (1). A sieve plate (7) is slidably connected to the inner wall of the discharge port (5). A sliding bushing (9) is fixedly provided on the top wall of the sieve plate (7). A crushing slider (10) is slidably connected to the sliding bushing (9). An inclined ring plate (13) is fixedly provided on the side wall of the fixed housing (1) near the discharge port (5). A transmission cone plate (14) is slidably provided on the circumferential wall of the rotating shaft (2). The two sides of the transmission cone plate (14) are respectively in contact with the inclined ring plate (13) and the crushing slider (10).

2. The oil-rich coal pyrolysis product conveying device according to claim 1, characterized in that: A groove (6) is provided on the inner wall of the discharge port (5). A sieve plate (7) is slidably connected in the groove (6). A first reset spring (8) is fixedly provided at the bottom end of the sieve plate (7). The bottom end of the first reset spring (8) is fixedly connected to the inner bottom wall of the groove (6).

3. The oil-rich coal pyrolysis product conveying device according to claim 1, characterized in that: The crushing slider (10) is fixedly provided with a guide rod (11), and a second reset spring (12) is fixedly provided at the bottom end of the guide rod (11). The other end of the second reset spring (12) is fixedly connected to the inner bottom wall of the sliding bushing (9).

4. The oil-rich coal pyrolysis product conveying device according to claim 1, characterized in that: A reset spring (16) is rotatably connected to the side wall of the transmission vertebra plate (14), and the other end of the reset spring (16) is rotatably connected to the inner side wall of the fixed housing (1).

5. The oil-rich coal pyrolysis product conveying device according to claim 1, characterized in that: The transmission vertebral plate (14) is fixedly provided with a transmission rod (15) on its side wall.

6. The oil-rich coal pyrolysis product conveying device according to claim 1, characterized in that: The crushing slider (10) is located directly above the sieve plate (7), and the side wall of the crushing slider (10) is set with an incline. The incline of the transmission cone plate (14) and the crushing slider (10) abut against each other.

7. The oil-rich coal pyrolysis product conveying device according to claim 1, characterized in that: A feed inlet (4) is fixedly provided on the upper part of the circumferential wall of one end of the fixed housing (1), and the feed inlet (4) is connected to the fixed housing (1).

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