A pneumatic conveying device for monoammonium phosphate

Abstract

The utility model relates to a kind of monoammonium phosphate pneumatic conveying devices, including air compressor, gas holder, transition bin, bin type pump, fluidization device and receiving bin;Transition bin is provided with feed inlet and bin temperature detection sensor, and the bottom of transition bin is provided with bin type pump;The bottom conical inner wall of transition bin and receiving bin is provided with fluidization device, and spiral heat preservation pipe is respectively arranged from conical inner wall from bottom to top;The discharge port of bin type pump is connected with the feed inlet of receiving bin by conveying pipeline;Conveying pipeline is uniformly provided with pipeline heat tracing device;The bottom of bin type pump is connected with gas holder by heat preservation pipeline;Gas holder is connected with air compressor.The utility model is perceived temperature in material conveying process by temperature sensor, in order to centralized control console carries out automation control, carries out heating insulation, guarantees the temperature-material conveying time curve of material in optimum temperature section, improves conveying efficiency, avoids material bonding in conveying pipeline, improves the conveying efficiency when long-distance conveying.

Description

Technical Field

[0001] This utility model relates to the field of chemical material transportation technology, and in particular to a pneumatic conveying device for monoammonium phosphate. Background Technology

[0002] Ammonium dihydrogen phosphate, with the chemical formula NH4H2PO4, also known as monoammonium phosphate, is a white crystalline or powdery substance with a melting point of 190℃ and a density of 1.8 g / cm³. 3 Ammonium dihydrogen phosphate (MDH) is readily soluble in water, hygroscopic, slightly soluble in alcohol, and insoluble in acetone. It has a pungent odor. MDH is stable in air, but decomposes into ammonia and phosphoric acid above its melting point, with partial decomposition occurring at 100°C. MDH is primarily used as a fire retardant for wood, textiles, and paper; due to its high nitrogen and phosphorus content, essential elements for plant growth, it is also used as an important agricultural fertilizer. Because MDH releases hydrogen ions upon contact with water, it is highly corrosive and prone to clumping, easily adhering to pipe walls during transport. Therefore, temperature and dryness control are necessary when transporting it through pipelines to manage corrosiveness and clumping, thereby improving transport efficiency over long distances. Utility Model Content

[0003] The purpose of this invention is to provide a pneumatic conveying device for monoammonium phosphate to improve the conveying efficiency during long-distance pipeline transportation.

[0004] This utility model is achieved by the following technical solution: A pneumatic conveying device for monoammonium phosphate includes an air compressor, an air storage tank, a transition chamber, a chamber pump, a fluidizing device, and a receiving chamber. The transition chamber is equipped with inlet level and internal temperature sensors, and the chamber pump is located at its bottom. The receiving chamber is equipped with an inlet temperature sensor. Fluidizing devices are installed on the conical inner walls at the bottom of both the transition and receiving chambers, and spiral insulation pipes are installed from bottom to top along the conical inner walls. The outlet of the chamber pump is connected to the inlet of the receiving chamber via a conveying pipe. Pipeline heat tracing devices are evenly installed on the conveying pipe. The bottom of the chamber pump is connected to the air storage tank via an insulation pipe. The air storage tank is connected to the air compressor. The transition chamber, chamber pump, and receiving chamber are controlled by corresponding first, second, and third field control boxes, respectively. The first, second, and third field control boxes are controlled by a PLC control cabinet.

[0005] Furthermore, there are two gas storage tanks connected by a pipeline, and a dryer and a filter are installed on the pipeline in sequence according to the direction of air intake.

[0006] Furthermore, an electric heater and a gas flow temperature sensor are installed on the outlet pipe of the gas storage tank that is directly connected to the silo pump.

[0007] Furthermore, the transition chamber is also equipped with a first safety valve and a high-level material meter; an exhaust pipe is connected between the transition chamber and the chamber pump.

[0008] Furthermore, the receiving chamber is also equipped with a second safety valve and a radar level gauge; the installation site of the receiving chamber is equipped with an air storage tank for connection to the fluidization device.

[0009] Furthermore, the material conveying pipeline is equipped with multiple temperature sensors for material conveying.

[0010] Furthermore, the installation site of the transition chamber is equipped with a valve air supply power tank, which is used to supply air to the valves as the power for opening and closing.

[0011] Furthermore, pipe supports are installed under both the insulated pipe and the material conveying pipe.

[0012] Furthermore, the insulated pipe is equipped with branch pipes for connection to the fluidization device.

[0013] Furthermore, the PLC control cabinet is electrically connected to the distributed control console.

[0014] The beneficial effects of this utility model are: This utility model uses a temperature sensor to sense the temperature during the material conveying process, so that the distribution control console can perform automated control, heating and insulation, ensuring that the temperature-conveying time curve of the material is in the optimal temperature range, improving conveying efficiency, avoiding material sticking in the conveying pipeline, and improving the conveying efficiency during long-distance conveying. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0016] Figure 2 This is an enlarged connection diagram of the left side of this utility model.

[0017] Figure 3 This is an enlarged connection diagram of the right side of this utility model.

[0018] The components include: 1. Air compressor; 2. Air tank; 3. Dryer; 4. Filter; 5. Electric heater; 6. Airflow temperature sensor; 7. Insulated pipe; 8. Valve air supply power tank; 9. Internal temperature detection sensor; 10. First safety valve; 11. Exhaust pipe; 12. High-level material meter; 13. Transition bin; 14. First field control box; 15. Bin pump; 16. Second field control box; 17. Conveying pipe; 18. Pipeline heat tracing device; 19. Temperature sensor during material conveying; 20. Feed temperature sensor; 21. Second safety valve; 22. Radar level gauge; 23. Third field control box; 24. Air storage tank; 25. PLC control cabinet; 26. Distributed control console; 27. Fluidization device; 28. Pipe support; 29. ​​Spiral insulated pipe; 30. Receiving bin. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0020] like Figures 1 to 3 As shown, a pneumatic conveying device for monoammonium phosphate includes an air compressor 1, an air storage tank 2, a transition chamber 13, a chamber pump 15, a fluidizing device 27, and a receiving chamber 30. The transition chamber 13 is equipped with inlet level and chamber temperature detection sensors 9, and the chamber pump 15 is located at the bottom of the transition chamber 13. The receiving chamber 30 is equipped with an inlet temperature sensor 20. Fluidizing devices 27 are installed on the conical inner walls at the bottom of both the transition chamber 13 and the receiving chamber 30, and spiral insulation pipes 29 are installed from bottom to top on the conical inner walls. The outlet of the chamber pump 15 is connected to the receiving chamber... The feed inlet of silo 30 is connected via a conveying pipe 17; pipe heat tracing devices 18 are evenly arranged on the conveying pipe 17; the bottom of the silo pump 15 is connected to the air storage tank 2 via an insulated pipe 7; the air storage tank 2 is connected to the air compressor 1; the transition silo 13, the silo pump 15, and the receiving silo 30 are controlled by corresponding first field control boxes 14, second field control boxes 16, and third field control boxes 23, respectively; the first field control box 14, second field control box 16, and third field control box 23 are controlled by a PLC control cabinet 25. The fluidization device 27 includes fluidization tubes and fluidization ring tubes. The fluidization ring tubes are located on the outside of the conical wall, and multiple inclined fluidization tubes are evenly arranged on the fluidization ring tubes. The fluidization devices 27 in the transition chamber 13 and receiving chamber 30 provide pneumatic power through the gas storage tank 2 and gas storage bag 24 respectively to internally purify and fluidize the monoammonium phosphate material entering the transition chamber 13 and receiving chamber 30, making the material tumble within the chamber for uniform heating and significantly improving the effects of breaking up arches and clumps. This invention uses insulated pipes 7 to transport heated kinetic gas to heat and maintain the monoammonium phosphate. When the temperature drops to 80°C during material transport, the pipe heat tracing device 18 is activated to ensure the temperature during material transport remains above 80°C, ensuring the temperature-transport time curve of the material is within the optimal temperature range, improving transport efficiency, preventing material adhesion in the conveying pipe 17, affecting transport speed, and avoiding material waste and damage to the pipe. When the temperature of the material entering the transition chamber 13 or receiving chamber 30 is below 50°C, a hot water pump is activated to heat the material through the spiral insulated pipe 29, preventing material adhesion and fully utilizing the hot water produced in the factory for heat energy recovery. The transition chamber 13 and receiving chamber 30 are made of Q235B material, and the conveying pipe 17 is made of 304 stainless steel to reduce the impact of corrosion and damage to the pipe.

[0021] As a preferred embodiment, such as Figure 1 and Figure 2 As shown, there are two air storage tanks 2, which are connected by a pipeline. A dryer 3 and a filter 4 are installed on the pipeline in sequence according to the air inlet direction. An air compressor 1 is used to provide the air source. To achieve the purpose of dehydration, a multi-stage dehydration and oil removal method is adopted, which involves air storage tank 2, dryer 3, filter 4, and air storage tank 2, ensuring the stability of long-distance transportation and greatly reducing the frequency of pipeline blockage.

[0022] As a preferred embodiment, such as Figure 1 and Figure 2 As shown, an electric heater 5 and an airflow temperature sensor 6 are installed on the outlet pipe of the air storage tank 2, which is directly connected to the silo pump 15.

[0023] As a preferred embodiment, such as Figure 1 and Figure 2 As shown, the transition chamber 13 is also equipped with a first safety valve 10 and a high-level material meter 12; an exhaust pipe 11 connects the transition chamber 13 and the chamber pump 15. As a preferred embodiment, as... Figure 1 and Figure 3 As shown, the receiving chamber 30 is also equipped with a second safety valve 21 and a radar level gauge 22; an air storage tank 24 is installed at the installation site of the receiving chamber 30 for connection to the fluidization device 27. The transition chamber 13 and the receiving chamber 30 respectively detect the high and low material levels of the material through the high-level material gauge 12 and the radar level gauge 22 to achieve automatic operation. In automatic operation mode, when the low material level is reached, the material is automatically conveyed to the high material level and then stopped; when the high material level is reached, the feeding stops to ensure efficient operation of the equipment.

[0024] As a preferred embodiment, such as Figures 1 to 3 As shown, multiple temperature sensors 19 for material conveying are installed on the material conveying pipeline 17.

[0025] As a preferred embodiment, such as Figure 1 and Figure 2 As shown, the site where the transition chamber 13 is installed is equipped with a valve air supply power tank 8, which is used to supply air to the valves as the power for opening and closing.

[0026] As a preferred embodiment, such as Figures 1 to 3 As shown, pipe supports 28 are provided under both the insulated pipe 7 and the conveying pipe 17 to support the insulated pipe 7 and the conveying pipe 17 during long-distance transportation.

[0027] As a preferred embodiment, such as Figure 1 and Figure 2 As shown, the insulated pipe 7 is provided with a branch pipe for connecting to the fluidization device 27.

[0028] As a preferred embodiment, such as Figure 1 and Figure 3 As shown, the PLC control cabinet 25 is electrically connected to the distributed control console 26, and the entire conveying system is centrally controlled and automated by the distributed control console 26. The temperature of the material during the conveying process is sensed by a temperature sensor so that the distributed control console 26 can perform automated control to ensure that the temperature-conveying time curve of the material is in the optimal temperature range, thereby improving the conveying efficiency, preventing the material from sticking in the conveying pipe 17, and improving the conveying efficiency during long-distance conveying.

[0029] Although the specific embodiments of this utility model have been described and explained in detail above, it should be noted that various equivalent changes and modifications can be made to the above embodiments based on the concept of this utility model. As long as the resulting functions do not exceed the spirit covered by the specification, they should all be within the protection scope of this utility model.

Claims

1. A pneumatic conveying device for monoammonium phosphate, characterized in that, The system includes an air compressor, an air storage tank, a transition chamber, a chamber pump, a fluidizing device, and a receiving chamber. The transition chamber is equipped with inlet level and internal temperature sensors, and the chamber pump is located at its bottom. The receiving chamber is equipped with an inlet temperature sensor. Fluidizing devices are installed on the conical inner walls at the bottom of both the transition and receiving chambers, and spiral insulation pipes are installed from bottom to top along these conical inner walls. The outlet of the chamber pump is connected to the inlet of the receiving chamber via a conveying pipe. Pipeline heat tracing devices are evenly installed on the conveying pipe. The bottom of the chamber pump is connected to the air storage tank via an insulation pipe. The air storage tank is connected to the air compressor. The transition chamber, chamber pump, and receiving chamber are controlled by corresponding first, second, and third field control boxes, respectively. These field control boxes are controlled via a PLC control cabinet.

2. The pneumatic conveying device for monoammonium phosphate according to claim 1, characterized in that, There are two gas storage tanks, which are connected by a pipeline. A dryer and a filter are installed on the pipeline in sequence according to the direction of air inlet.

3. The pneumatic conveying device for monoammonium phosphate according to claim 2, characterized in that, An electric heater and a gas flow temperature sensor are installed on the outlet pipe of the gas storage tank that is directly connected to the silo pump.

4. The pneumatic conveying device for monoammonium phosphate according to claim 1, characterized in that, The transition chamber is also equipped with a first safety valve and a high-level material meter; an exhaust pipe is connected between the transition chamber and the chamber pump.

5. The pneumatic conveying device for monoammonium phosphate according to claim 1, characterized in that, The receiving chamber is also equipped with a second safety valve and a radar level gauge; the installation site of the receiving chamber is equipped with an air storage tank for connection to the fluidization device.

6. The pneumatic conveying device for monoammonium phosphate according to claim 1, characterized in that, The material conveying pipeline is equipped with multiple temperature sensors for material conveying.

7. The pneumatic conveying device for monoammonium phosphate according to claim 1, characterized in that, The site where the transition chamber is installed is equipped with a valve air supply power tank, which is used to supply air to the valves as the power for opening and closing.

8. The pneumatic conveying device for monoammonium phosphate according to claim 1, characterized in that, Both the insulated pipe and the material conveying pipe are equipped with pipe supports.

9. A pneumatic conveying device for monoammonium phosphate according to claim 8, characterized in that, The insulated pipe is equipped with branch pipes for connecting to the fluidization device.

10. A pneumatic conveying device for monoammonium phosphate according to claim 1, characterized in that, The PLC control cabinet is electrically connected to the distributed control console.

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