An air supply connection structure for slag conveying

Abstract

This utility model relates to the field of pneumatic conveying auxiliary equipment, specifically an air replenishment connection structure for slag conveying. It includes an auxiliary pipe connected to an ash conveying pipeline at one end and to a pneumatic conveyor with an air outlet pipe at the other. The auxiliary pipe is inclined and fixedly connected to the ash conveying pipeline by welding. A raised connecting thread is fixedly connected to the inner wall of the auxiliary pipe. A grooved mating thread is formed on the circumferential outer wall of the air outlet pipe. The air outlet pipe communicates with the auxiliary pipe through the mating thread and the connecting thread. An anti-detachment ring is fixedly connected to the air outlet pipe, with its axis collinear with the axis of the air outlet pipe. An anti-detachment cylinder abuts against the anti-detachment ring at a position away from the mating thread. A grooved anti-detachment thread is formed on the inner wall of the anti-detachment cylinder. A raised fixing thread is fixedly connected to the circumferential outer wall of the auxiliary pipe. The anti-detachment cylinder is fitted onto the outside of the auxiliary pipe through the mating thread and the fixing thread, thereby improving the convenience of replacing the pneumatic conveyor.

Description

Technical Field

[0001] This utility model relates to the technical field of pneumatic conveying auxiliary equipment, specifically to an air replenishment connection structure for slag conveying. Background Technology

[0002] In existing thermal power plants, slag is typically transported out via a fly ash conveying system. This system is a common type of fly ash conveying system that not only provides a continuous and stable supply of fly ash, ensuring the continuous operation of the power plant, but also continuously transports the slag generated during power generation to the processing workshop. Currently, the fly ash conveying system is gradually becoming one of the important supporting equipment in thermal power plants.

[0003] In existing fly ash conveying systems, when transporting slag, the slag first enters the ash conveying pipeline. At the end of the ash conveying pipeline, there is an air source that provides compressed airflow. Under the action of the compressed airflow, the slag moves along the ash conveying pipeline. Since the ash conveying pipeline is relatively long, in order to prevent the airflow in the ash conveying pipeline from being unable to push the slag, a pneumatic conveyor is usually installed on the ash conveying pipeline as an air replenishment structure. The pneumatic conveyor is connected to the air source, and the compressed air from the air source is replenished into the ash conveying pipeline through the pneumatic conveyor. The pneumatic conveyor is inclined in the opposite direction to the direction of airflow in the ash conveying pipeline.

[0004] The existing pneumatic conveyor typically includes a body with an air inlet chamber. One end of the air inlet chamber is connected to an air inlet pipe, and the other end is connected to an air outlet pipe. The end of the air inlet pipe furthest from the body is connected to an air source, and the end of the air outlet pipe furthest from the body is connected to an ash conveying pipeline. In use, the worker first connects the air outlet pipe to the ash conveying pipeline, and then fixes the ash conveying pipeline and the air outlet pipe together by welding. After the connection is completed, the gas generated in the air source enters the air inlet chamber through the air inlet pipe, and then enters the ash conveying pipeline through the air outlet pipe, thus driving the movement of fly ash in the ash conveying pipeline.

[0005] The aforementioned prior art has the following drawbacks: When a pneumatic conveyor malfunctions and needs to be replaced, workers usually have to stop the conveying work on that section of the ash conveying pipeline, then melt the connection between the air outlet pipe and the pipeline, and then re-fix the new pneumatic conveyor by welding. This process is cumbersome, increases the complexity of replacing the pneumatic conveyor, and reduces its ease of use. Utility Model Content

[0006] The purpose of this utility model is to provide an air replenishment connection structure for slag conveying, thereby improving the convenience of replacing pneumatic conveyors and solving the problems mentioned in the background art.

[0007] To achieve the above-mentioned technical objectives and effects, this utility model is implemented through the following technical solution: A gas-supply connection structure for slag conveying includes an auxiliary pipe, one end of which is connected to an ash conveying pipeline and the other end of which is connected to a pneumatic conveyor with an air outlet pipe. The auxiliary pipe is inclined and fixedly connected to the ash conveying pipeline by welding. The inner wall of the auxiliary pipe is fixedly connected with a raised connecting thread, and the outer circumferential wall of the air outlet pipe is provided with a grooved mating thread. The air outlet pipe is connected to the auxiliary pipe through the mating thread and the connecting thread. An anti-detachment ring is fixedly connected to the air outlet pipe. The axis of the anti-detachment ring is collinear with the axis of the air outlet pipe. An anti-detachment cylinder is abutted against the anti-detachment ring at a position away from the mating thread. The air outlet pipe is inserted into the anti-detachment cylinder. The inner wall of the anti-detachment cylinder is provided with a grooved anti-detachment thread, and the outer circumferential wall of the auxiliary pipe is fixedly connected with a raised fixing thread. The anti-detachment cylinder is sleeved on the outside of the auxiliary pipe through the mating thread and the fixing thread. After the anti-detachment cylinder is tightened, the anti-detachment cylinder presses against the anti-detachment ring.

[0008] As a preferred embodiment of this utility model, the connecting thread has a left-hand helix, and the mating thread has a helix that matches the connecting thread; the anti-loosening thread has a right-hand helix, and the fixing thread has a helix that matches the anti-loosening thread.

[0009] As a preferred embodiment of this utility model, a reinforcing seat is provided at the connection position between the auxiliary pipe and the ash conveying pipe, the auxiliary pipe is inserted into the reinforcing seat, the bottom wall of the reinforcing seat is fixedly connected to the ash conveying pipe, and the circumferential side wall of the auxiliary pipe is fixedly connected to the inner wall of the reinforcing seat.

[0010] As a preferred embodiment of this utility model, a sealing ring is fixedly connected to the end face of the anti-detachment ring away from the mating thread. The sealing ring is sleeved on the air outlet pipe, and the circumferential side wall of the sealing ring abuts against the inner wall of the anti-detachment cylinder. After the anti-detachment cylinder is tightened, it is pressed against the sealing ring.

[0011] As a preferred embodiment of this invention, the sealing ring is made of silicone material.

[0012] As a preferred embodiment of this utility model, a tapered reinforcing cylinder is fixedly connected to the end face of the anti-detachment ring facing the mating thread. The axis of the reinforcing cylinder is collinear with the axis of the air outlet pipe. The larger end of the reinforcing cylinder is fixedly connected to the end face of the anti-detachment ring, and the smaller end of the reinforcing cylinder extends to the mating thread.

[0013] The beneficial effects of this utility model are: After the auxiliary pipe is fixedly connected to the ash conveying pipe by welding, the auxiliary pipe can transfer the supporting force of the ash conveying pipe to the pneumatic conveyor, so that the pneumatic conveyor can be stably inserted into the auxiliary pipe. The auxiliary pipe and the air outlet pipe of the pneumatic conveyor are connected by connecting threads and mating threads. Because the connecting threads are raised, the integrity of the auxiliary pipe is not compromised, ensuring its stability during use. Furthermore, the threaded connection not only provides good connection strength but also excellent sealing, enabling the pneumatic conveyor to stably deliver airflow into the ash conveying pipeline and ensuring the airtightness of the connection between the auxiliary pipe and the air outlet pipe. The anti-drop ring and anti-drop cylinder work together to prevent the pneumatic conveyor from ejecting from the auxiliary pipe due to excessive pipeline pressure, further guaranteeing stable operation. When replacing the pneumatic conveyor, workers only need to rotate the anti-drop cylinder and the conveyor itself to pull it out of the auxiliary pipe. The replacement conveyor is then screwed back into the auxiliary pipe in the same way. The replacement operation is simple and quick, greatly optimizing the process and improving the convenience of pneumatic conveyor replacement. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram showing the internal structure of the anti-fall-off cylinder.

[0016] The attached diagram lists the components represented by each number as follows: 1. Ash conveying pipe; 2. Pneumatic conveyor; 21. Air outlet pipe; 3. Auxiliary pipe; 31. Connecting thread; 311. Mating thread; 32. Anti-detachment thread; 321. Fixing thread; 4. Anti-detachment ring; 41. Sealing ring; 5. Anti-detachment cylinder; 6. Reinforcing seat; 7. Reinforcing cylinder. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0018] See Figure 1-2 As shown, a gas supply connection structure for slag conveying includes a long auxiliary pipe 3. One end of the auxiliary pipe 3 is connected to an ash conveying pipe 1, and the other end is connected to a pneumatic conveyor 2 with an air outlet pipe 21. The auxiliary pipe 3 is inclined to the ash conveying pipe 1 and is fixedly connected to the ash conveying pipe 1 by welding. A reinforcing seat 6 is provided at the connection position between the auxiliary pipe 3 and the ash conveying pipe 1. The auxiliary pipe 3 is inserted into the reinforcing seat 6. The bottom wall of the reinforcing seat 6 is fixedly connected to the ash conveying pipe 1. The circumferential side wall of the auxiliary pipe 3 is fixedly connected to the inner wall of the reinforcing seat 6. The reinforcing seat 6 can improve the connection strength between the auxiliary pipe 3 and the ash conveying pipe 1 and improve the stability of the auxiliary pipe 3 during use.

[0019] See Figure 1-2 As shown, the inner wall of the auxiliary pipe 3 is fixedly connected with a left-hand spiral protruding connecting thread 31, and the outer wall of the vent pipe 21 is provided with a groove-type mating thread 311. The vent pipe 21 is connected to the auxiliary pipe 3 through the mating thread 311 and the connecting thread 31. The setting of the connecting thread 31 can ensure the integrity of the auxiliary pipe 3, prevent the auxiliary pipe 3 from cracking when subjected to pressure, and improve the stability of the auxiliary pipe 3 in use.

[0020] See Figure 1-2 As shown, an anti-detachment ring 4 is fixedly connected to the air outlet pipe 21. The axis of the anti-detachment ring 4 is collinear with the axis of the air outlet pipe 21. The anti-detachment ring 4 is located at the position away from the auxiliary pipe 3 on the mating thread 311. A sealing ring 41 made of silicone material is fixedly connected to the end face of the anti-detachment ring 4 away from the mating thread 311. The sealing ring 41 is sleeved on the air outlet pipe 21. The circumferential side wall of the sealing ring 41 abuts against the inner wall of the anti-detachment cylinder 5. After the anti-detachment cylinder 5 is tightened, it is pressed against the sealing ring 41.

[0021] See Figure 1-2 As shown, a tapered reinforcing cylinder 7 is fixedly connected to the end face of the anti-detachment ring 4 facing the mating thread 311. The axis of the reinforcing cylinder 7 is collinear with the axis of the air outlet pipe 21. The larger end of the reinforcing cylinder 7 is fixedly connected to the end face of the anti-detachment ring 4, and the smaller end of the reinforcing cylinder 7 extends to the mating thread 311.

[0022] See Figure 1-2As shown, the anti-detachment ring 4 abuts against the anti-detachment cylinder 5 at a position away from the mating thread 311. The air outlet pipe 21 is inserted into the anti-detachment cylinder 5. The inner wall of the anti-detachment cylinder 5 is provided with a right-hand spiral groove anti-detachment thread 32. The circumferential outer wall of the auxiliary pipe 3 is fixedly connected with a raised fixing thread 321. The anti-detachment cylinder 5 is sleeved on the outside of the auxiliary pipe 3 through the mating of the anti-detachment thread 32 and the fixing thread 321. After the anti-detachment cylinder 5 is tightened, the anti-detachment cylinder 5 presses against the anti-detachment ring 4. The loosening rotation method of the anti-detachment ring 4 is opposite to the loosening rotation method of the air outlet pipe 21, which can prevent the connection of the air outlet pipe 21 from being affected when operating the anti-detachment cylinder 5. At the same time, it can also prevent the anti-detachment cylinder 5 from being affected when the air outlet pipe 21 rotates irregularly during use, thereby improving the stability of the anti-detachment cylinder 5 in use.

[0023] One specific application of this embodiment is: When the worker operates the pneumatic conveyor 2, firstly, the worker loosens the anti-detachment cylinder 5. After loosening the anti-detachment cylinder 5, the clamping force on the sealing ring and anti-detachment ring 4 is released, and the connection between the anti-detachment cylinder 5 and the outer wall of the auxiliary pipe 3 is separated. Then, the worker rotates the air outlet cylinder in the opposite direction to loosening the anti-detachment cylinder 5. After loosening the air outlet cylinder, the worker can directly pull the air outlet pipe 21 out of the auxiliary pipe 3 to complete the separation. Then, the worker places the new pneumatic conveyor 2 into the auxiliary pipe 3. During placement, the worker first screws the air outlet pipe 21 into the auxiliary pipe 3. When the end of the reinforcing cylinder 7 abuts against the auxiliary pipe 3, it indicates that the connection between the air outlet pipe 21 and the auxiliary pipe 3 has reached the qualified state. Then, the worker tightens the anti-drop cylinder 5 onto the outside of the auxiliary pipe 3. Tightening the anti-drop cylinder 5 applies pressure to the sealing ring 41, causing the sealing ring 41 to seal the gap between the air outlet pipe 21 and the anti-drop cylinder 5. In summary, the above steps improve the ease of replacement of the pneumatic conveyor 2.

[0024] Of course, the above description is not intended to limit the present utility model, nor is the present utility model limited to the examples given above. Any changes, alterations, additions or substitutions made by those skilled in the art within the scope of the present utility model should be protected by the present utility model.

Claims

1. A gas replenishment connection structure for slag conveying, characterized in that: The system includes an auxiliary pipe (3) connected at one end to the ash conveying pipe (1) and at the other end to a pneumatic conveyor (2) with an air outlet pipe (21). The auxiliary pipe (3) is inclined and fixedly connected to the ash conveying pipe (1) by welding. The inner wall of the auxiliary pipe (3) is fixedly connected with a raised connecting thread (31). The outer circumferential wall of the air outlet pipe (21) is provided with a grooved mating thread (311). The air outlet pipe (21) is connected to the auxiliary pipe (3) through the mating thread (311) and the connecting thread (31). The air outlet pipe (21) is fixedly connected with an anti-detachment ring (4) to prevent... The axis of the detachment ring (4) is collinear with the axis of the air outlet pipe (21). The anti-detachment ring (4) is abutted against the anti-detachment cylinder (5) at a position away from the mating thread (311). The air outlet pipe (21) is inserted into the anti-detachment cylinder (5). The inner wall of the anti-detachment cylinder (5) is provided with a groove-type anti-detachment thread (32). The outer circumferential wall of the auxiliary pipe (3) is fixedly connected with a protruding fixing thread (321). The anti-detachment cylinder (5) is fitted on the outside of the auxiliary pipe (3) through the mating of the anti-detachment thread (32) and the fixing thread (321). After the anti-detachment cylinder (5) is tightened, the anti-detachment cylinder (5) presses against the anti-detachment ring (4).

2. The air supply connection structure for slag conveying according to claim 1, characterized in that: The connecting thread (31) is left-handed, and the helix of the mating thread (311) is matched with that of the connecting thread (31); the anti-loosening thread (32) is right-handed, and the helix of the fixing thread (321) is matched with that of the anti-loosening thread (32).

3. The air supply connection structure for slag conveying according to claim 2, characterized in that: A reinforcing seat (6) is provided at the connection position between the auxiliary pipe (3) and the ash conveying pipe (1). The auxiliary pipe (3) is inserted into the reinforcing seat (6). The bottom wall of the reinforcing seat (6) is fixedly connected to the ash conveying pipe (1). The circumferential side wall of the auxiliary pipe (3) is fixedly connected to the inner wall of the reinforcing seat (6).

4. The air supply connection structure for slag conveying according to claim 3, characterized in that: A sealing ring (41) is fixedly connected to the end face away from the mating thread (311) of the anti-drop ring (4). The sealing ring (41) is sleeved on the air outlet pipe (21). The circumferential side wall of the sealing ring (41) abuts against the inner wall of the anti-drop cylinder (5). After the anti-drop cylinder (5) is tightened, it is pressed onto the sealing ring (41).

5. The air supply connection structure for slag conveying according to claim 4, characterized in that: The sealing ring (41) is made of silicone material.

6. The air supply connection structure for slag conveying according to claim 5, characterized in that: The anti-detachment ring (4) has a tapered reinforcing cylinder (7) fixedly connected to the end face of the mating thread (311). The axis of the reinforcing cylinder (7) is collinear with the axis of the air outlet pipe (21). The larger end of the reinforcing cylinder (7) is fixedly connected to the end face of the anti-detachment ring (4), and the smaller end of the reinforcing cylinder (7) extends to the mating thread (311).

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