Positive-pressure pneumatic conveying system for pebble coal

Abstract

The utility model provides a pebble coal positive-pressure pneumatic conveying system which comprises a single-point conveying pump system, an air source system, a pipeline system and a control system, and is characterized in that the single-point conveying pump system comprises a manual inserting plate door, an expansion joint, a feeding valve, an SCQ pump, a discharging valve, a first rotary emitter, an air inlet system, a local control system, a hydrophobic separator and an air supplementing device; according to the utility model, the drain separator is additionally arranged at the front end of the air inlet system, and the air supply device is additionally arranged at the rear end of the first rotary emitter, so that moisture in compressed air can be effectively removed, and the problem of internal corrosion or material adhesion of a pipeline caused by moisture is avoided; the risk of caking of pebble coal particles due to humidity change in the conveying process is reduced, and smooth flowing of materials is ensured; the air supplement device can provide additional compressed air supplement for the conveying pipeline at the rear end of the first rotary emitter, and the conveying capacity of the system is further improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of stone coal pressure gas force delivery, especially relates to a stone coal positive pressure gas force delivery system. BACKGROUND

[0002] The traditional domestic thermal power plant coal mill produces stone coal, which is usually transported out by artificial forklifts, so the working environment is poor and the pollution is serious, the material delivered by the gas force delivery system is generally in powder or small particle form, and the stone coal particles can be up to 80mm, and the small particles are 10-50mm, so the positive pressure gas force delivery cannot be realized due to the large particles, and therefore there is no stone coal positive pressure gas force delivery system on the domestic market for a long time.

[0003] The Chinese utility model patent with the patent number CN205187365U proposes a stone coal positive pressure gas force delivery system, which comprises a single-point delivery pump system, an air source system, a pipeline system and a control system, the single-point delivery pump system comprises a manual plug door, an expansion joint, a feeding valve, an SCQ pump, a discharging valve, a first rotary launcher, an air inlet system and an on-site control system, the manual plug door is connected with a feeding device and the expansion joint, the expansion joint is connected with the feeding valve, the feeding valve is connected with the SCQ pump, the on-site control system is arranged in the SCQ pump, the bottom of the SCQ pump is connected with the discharging valve, the discharging valve is connected with the first rotary launcher, the first rotary launcher is connected with a delivery pipeline, and the SCQ pump and the first rotary launcher are connected with the air inlet system.

[0004] The above-mentioned delivery system realizes automatic feeding, automatic delivery, automatic stopping, valve damage alarm and other functions, the stone coal positive pressure gas force delivery system is environment-friendly, efficient and stable, and there is no dust and leakage in the use site, but in the actual operation process of the system, we find that there are still technical problems to be improved, if the compressed air contains a large amount of water in the system, the inner wall of the pipeline may be corroded, and the service life is affected, and the humid environment may cause the stone coal particles to be caked, increasing the delivery difficulty, on the other hand, in long-distance delivery or complex pipeline, pressure loss is also a common problem. UTILITY MODEL CONTENTS

[0005] In order to solve the problems of large water content in compressed air and pressure loss in the prior art, the utility model provides a stone coal positive pressure gas force delivery system.

[0006] The utility model provides a stone coal positive pressure gas force delivery system adopts the following technical scheme:

[0007] A positive pressure pneumatic conveying system for stone and coal includes a single-point conveying pump system, an air source system, a pipeline system, and a control system. The single-point conveying pump system includes a manual gate valve, an expansion joint, a feed valve, an SCQ pump, a discharge valve, a first rotary launcher, an air intake system, a local control system, a condensate separator, and an air replenisher.

[0008] The manual slide gate has a feeding device and an expansion joint connected to its inlet and outlet ends, respectively. One end of the expansion joint is connected to a feeding valve, and the other end of the feeding valve is connected to an SCQ pump. The SCQ pump has an internal local control system. One end of the SCQ pump's bottom outlet is connected to a discharge valve, and the other end of the discharge valve is connected to a first rotary launcher. An air replenisher is connected to the discharge port of the first rotary launcher, and the air replenisher is connected to a conveying pipeline. Both the SCQ pump and the first rotary launcher are connected to an air intake system, which is connected to an air source system. A hydrophobic separator is connected between the air source system and the air intake system. The feeding device connected to the manual slide gate is connected to the conveying pipeline, and a drain valve is installed between the feeding device and the conveying pipeline. Multiple single-point conveying pump systems are connected to a terminal storage unit via conveying pipelines, and a second rotary launcher is installed on the conveying pipeline between each single-point conveying pump system.

[0009] Furthermore, all the conveying pipelines are made of seamless steel pipes; and are connected using replaceable wear-resistant elbows.

[0010] Furthermore, the control system includes a local solenoid valve box, a PLC control system, a supervisory control system, and cables and cable trays.

[0011] Furthermore, the SCQ pump also includes a vibration sensor and a temperature sensor.

[0012] Furthermore, the SCQ pump is a spherical or boot-shaped casting.

[0013] Furthermore, the air source system includes an air compressor system, an air source pipeline and valve system, and an air storage tank.

[0014] In summary, the beneficial effects of this utility model are as follows:

[0015] This invention adds a hydrophobic separator to the front end of the air intake system and an air replenisher to the rear end of the first rotary transmitter, which can effectively remove moisture from the compressed air and avoid problems such as internal corrosion of pipes or material adhesion caused by moisture. It helps to extend the service life of equipment and pipes. In addition, dry compressed air can also reduce the risk of stone and coal particles clumping due to humidity changes during transportation, ensuring smooth material flow.

[0016] The air replenisher can provide additional compressed air to the delivery pipeline at the rear end of the first rotary launcher, further improving the delivery capacity of the system. Especially in the case of long-distance or complex pipelines, it can effectively maintain the pressure balance in the pipeline.

[0017] By combining the use of hydrophobic separators and air replenishers, the airflow parameters during the conveying process can be better controlled, thereby reducing the occurrence of blockages, material jams, and other phenomena, and improving the operational stability of the system. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the single-point delivery pump system of this utility model;

[0019] Figure 2 This is a schematic diagram of the internal structure of the overall conveying system of this utility model.

[0020] Figure 3 This is a schematic diagram of the internal sensor of the integral SCQ pump of this utility model.

[0021] As shown in the figure: 1-Manual slide gate, 2-Expansion joint, 3-Infeed valve, 4-SCQ pump, 5-Discharge valve, 6-First rotary launcher, 7-Air intake system, 8-Local control system, 9-Single-point conveying pump system, 10-Air source system, 11-Pipeline system, 12-Second rotary launcher, 13-Conveying pipeline, 14-Blocking valve, 15-Terminal storage, 16-Drain separator, 17-Air replenisher. Detailed Implementation

[0022] The following is in conjunction with the appendix Figures 1-3 The present invention will be further described in detail below:

[0023] This utility model discloses a positive pressure pneumatic conveying system for stones and coal, such as... Figure 1 , 2 As shown, a positive pressure pneumatic conveying system for stone and coal includes a single-point conveying pump system 9, an air source system 10, a pipeline system 11, and a control system. The single-point conveying pump system 9 includes a manual slide gate 1, an expansion joint 2, a feed valve 3, an SCQ pump 4, a discharge valve 5, a first rotary launcher 6, an air intake system 7, a local control system 8, a condensate separator 16, and an air supplementer 17.

[0024] The manual slide gate 1 has a feeding device and an expansion joint 2 connected to its inlet and outlet ends, respectively. The expansion joint 2 is connected to one end of the feeding valve 3, and the other end of the feeding valve 3 is connected to the SCQ pump 4. The SCQ pump 4 has a local control system 8 installed inside. The bottom outlet of the SCQ pump 4 is connected to one end of the discharge valve 5, and the other end of the discharge valve 5 is connected to the first rotary launcher 6. The discharge port of the first rotary launcher 6 is connected to the air supply device 17, which is connected to the conveying pipe 13. The SCQ pump 4 and the first rotary launcher 6 are both connected to the air intake system 7, which is connected to the air source system 10. A water separator 16 is connected between the air source system 10 and the air intake system 7. The feeding device connected to the manual slide gate 1 is connected to the conveying pipe 13, and a drain valve 14 is provided between the feeding device and the conveying pipe 13. Multiple single-point conveying pump systems 9 are connected to the terminal storage 15 through the conveying pipe 13, and a second rotary launcher 12 is provided on the conveying pipe 13 between each single-point conveying pump system 9.

[0025] In the above embodiment, the system provides a stable airflow through the air source system 10, the single-point conveying pump system 9 is responsible for sucking in and pressurizing the stone coal, the pipeline system 11 serves as the material conveying channel, and the control system is responsible for the automated operation and monitoring of the entire system; the single-point conveying pump system 9 controls the entry of materials through the manual gate 1, the expansion joint 2 plays the role of compensating for the thermal expansion and contraction of the pipeline, the feed valve 3 and the discharge valve 5 control the entry and exit of materials, the SCQ pump 4 is the core component of the conveying, pressurizes and conveys materials through the airflow provided by the air intake system 7, and the first rotary launcher 6 ensures that the materials can smoothly enter the conveying pipeline 13;

[0026] It is worth noting that the core improvement of this embodiment is the addition of a hydrophobic separator 16 at the front end of the air intake system 7 and an air supplementer 17 at the rear end of the first rotary launcher 6. The hydrophobic separator 16 can effectively remove moisture from the compressed air, avoiding problems such as internal corrosion of the pipeline or material adhesion caused by moisture. This helps to extend the service life of the equipment and pipeline. In addition, dry compressed air can also reduce the risk of stone and coal particles clumping due to humidity changes during the transportation process, ensuring smooth material flow. The air supplementer 17 can provide additional compressed air to the conveying pipeline 13 at the rear end of the first rotary launcher 6, further improving the conveying capacity of the system. Especially in the case of long-distance or complex pipelines, it can effectively maintain the pressure balance in the pipeline. Through the combined use of the hydrophobic separator 16 and the air supplementer 17, the airflow parameters during the transportation process can be better controlled, thereby reducing the occurrence of blockages, material jamming, and other phenomena, and improving the operational stability of the system.

[0027] All conveying pipelines 13 are made of seamless steel pipes; and are connected using replaceable back-mounted wear-resistant elbows; in this embodiment, seamless steel pipes are used as conveying pipelines 13, which have advantages such as high strength, corrosion resistance, and low leakage; replaceable back-mounted wear-resistant elbows are used to connect the pipelines, which improves the wear resistance and service life of the pipelines;

[0028] The control system includes a local solenoid valve box, a PLC control system, a supervisory control system, and cables and cable trays. In this embodiment, the control system controls the opening and closing of each valve through the local solenoid valve box, the PLC control system realizes automated control and monitoring, the supervisory control system is used for remote monitoring and operation, and the cables and cable trays provide electrical connections and support. This achieves automated control and monitoring of the system, improving its stability and reliability. The use of the supervisory control system improves the system's controllability and visibility, facilitating remote operation and management.

[0029] like Figure 3 As shown, the SCQ pump 4 also includes a vibration sensor and a temperature sensor. In this embodiment, the vibration sensor and temperature sensor installed in the SCQ pump 4 are used to monitor the pump's operating status and ensure that the pump operates under safe and stable conditions. The vibration sensor can monitor the operating status of the SCQ pump 4 in real time and determine whether there is abnormal vibration. If the internal components of the SCQ pump 4 are worn, loose, or unbalanced, it will lead to increased vibration. These problems can be detected in time by the vibration sensor, avoiding delivery interruptions or efficiency reductions due to equipment failure and reducing unplanned downtime. The temperature sensor can detect the operating temperature of the SCQ pump 4. Excessively high or low temperatures may indicate potential problems with the equipment, such as overload, insufficient cooling, or poor lubrication. Combined with vibration data, comprehensive analysis can be performed through AI algorithms or PLC control systems to predict equipment failures in advance, reducing maintenance costs and downtime losses caused by sudden failures and extending the service life of the equipment.

[0030] like Figure 3 As shown, the SCQ pump 4 is a spherical or boot-shaped casting; the air source system 10 includes an air compressor system, an air source pipeline and valve system, and an air storage tank. In this embodiment, the SCQ pump 4 adopts a spherical or boot-shaped casting design, which has the advantages of compact structure, small footprint, and easy installation and maintenance; the air source system 10 consists of an air compressor system, an air source pipeline and valve system, and an air storage tank. The air compressor system provides compressed air as the power for delivery; the air source pipeline and valve system can deliver compressed air to various air consumption points; the air storage tank can store compressed air to ensure the stability of the air source and provide power for delivery.

[0031] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. The various components mentioned in this utility model are common technologies in the existing field. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A positive pressure pneumatic conveying system for stone and coal, comprising a single-point conveying pump system (9), a gas source system (10), a pipeline system (11), and a control system, characterized in that: The single-point delivery pump system (9) includes a manual slide gate (1), an expansion joint (2), a feed valve (3), an SCQ pump (4), a discharge valve (5), a first rotary launcher (6), an air intake system (7), a local control system (8), a hydrophobic separator (16), and an air replenisher (17). The manual slide gate (1) has a feeding device and an expansion joint (2) connected to its inlet and outlet ends, respectively. The expansion joint (2) is connected to one end of a feeding valve (3), and the other end of the feeding valve (3) is connected to an SCQ pump (4). The SCQ pump (4) has a local control system (8) installed inside. The bottom outlet of the SCQ pump (4) is connected to one end of a discharge valve (5), and the other end of the discharge valve (5) is connected to a first rotary launcher (6). The discharge port of the first rotary launcher (6) is connected to an air replenisher (17), and the air replenisher (17) is connected to a conveying pipe (13). The SCQ pump... (4) and the first rotary launcher (6) are both connected to the air intake system (7), which is connected to the air source system (10); a hydrophobic separator (16) is connected between the air source system (10) and the air intake system (7); the feeding device connected to the manual slide gate (1) is connected to the conveying pipe (13), and a drain valve (14) is provided between the feeding device and the conveying pipe (13); multiple single-point conveying pump systems (9) are connected to a terminal warehouse (15) through the conveying pipe (13), and a second rotary launcher (12) is provided on the conveying pipe (13) between each single-point conveying pump system (9).

2. The positive pressure pneumatic conveying system for stones and coal according to claim 1, characterized in that, All conveying pipelines (13) are made of seamless steel pipes and are connected using replaceable wear-resistant elbows.

3. The positive pressure pneumatic conveying system for stones and coal according to claim 1, characterized in that, The control system includes a local solenoid valve box, a PLC control system, a supervisory control system, and cables and cable trays.

4. The positive pressure pneumatic conveying system for stones and coal according to claim 1, characterized in that, The SCQ pump (4) also includes a vibration sensor and a temperature sensor.

5. The positive pressure pneumatic conveying system for stones and coal according to claim 1, characterized in that, The SCQ pump (4) is a spherical or boot-shaped casting.

6. The positive pressure pneumatic conveying system for stones and coal according to claim 1, characterized in that, The air source system (10) includes an air compressor system, an air source pipeline and valve system, and an air storage tank.

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