Bulk material handling apparatus

Abstract

The utility model relates to a kind of bulk material handling devices, including air source device and vertically distributed processing bin, the top of processing bin is separately provided with feed inlet and gas outlet, the bottom of processing bin is connected with vertically distributed multi-section type flow guide device, multi-section type flow guide device includes multiple groups of by top to bottom sequentially intercommunicating flow guide piece, each group of flow guide piece includes coaxial line arrangement and by top to bottom intercommunication conical cylinder and straight cylinder, conical cylinder is all top wide bottom narrow conical structure, the conical cylinder of flow guide piece in top and processing bin intercommunication, first on-off valve is installed on the straight cylinder of flow guide piece in bottom, and the straight cylinder of flow guide piece in bottom and air source device are connected by gas pipeline intercommunication;The size of multiple groups of flow guide piece sequentially decreases from top to bottom, the utility model can prolong the residence time of viscous bulk material in processing bin when using, to guarantee fluidization processing effect.

Description

Technical Field

[0001] This utility model belongs to the field of chemical technology, and in particular relates to a bulk material handling device. Background Technology

[0002] Currently, some viscous bulk materials are generated during the chemical production process. In order to ensure the smooth transportation, storage and use of these viscous bulk materials, fluidization treatment is required in the processing silo by backflushing with cold air. This means that the airflow is used to reduce the stickiness between the viscous bulk materials and prevent them from clumping.

[0003] Existing processing chambers are typically single-chamber cylindrical structures. During use, the residence time of viscous bulk materials within the processing chamber is sometimes short, which affects the fluidization treatment effect of viscous materials. Therefore, there are still shortcomings and deficiencies in the existing technology. Utility Model Content

[0004] The purpose of this invention is to provide a bulk material handling device to solve the problems mentioned in the background art.

[0005] The technical solution adopted by this utility model to solve the above problems is as follows: A bulk material handling device includes an air source device and vertically distributed handling chambers. The top of the handling chambers is provided with an inlet and an outlet. The bottom of the handling chambers is connected to a vertically distributed multi-segment flow guiding device. The multi-segment flow guiding device includes multiple sets of flow guiding components connected sequentially from top to bottom. Each set of flow guiding components includes a conical cylinder and a straight cylinder arranged coaxially and connected from top to bottom. The conical cylinders are all conical structures that are wider at the top and narrower at the bottom. The conical cylinder of the flow guiding component at the top is connected to the handling chamber. A first switching valve is installed on the straight cylinder of the flow guiding component at the bottom. The straight cylinder of the flow guiding component at the bottom is connected to the air source device through an air supply pipeline. The dimensions of the multiple sets of flow guides decrease sequentially from top to bottom.

[0006] Furthermore, the straight cylinder of each set of guide components is connected to the gas source device through a gas pipeline, and the bottom of the conical cylinder of each set of guide components extends into the straight cylinder. The gas pipeline is horizontally arranged, and the end of the gas pipeline near the straight cylinder is opposite to the bottom of the conical cylinder.

[0007] Furthermore, a vacuum sensor capable of collecting the vacuum level inside the processing chamber is installed on the processing chamber. The vacuum sensor signal is connected to the central control system. A first regulating valve is installed on the gas supply pipeline. The central control system is connected to the gas source device, the vacuum sensor, and the first regulating valve.

[0008] Furthermore, a first pressure transmitter is installed on the processing chamber, and the central control system is signal-connected to the first pressure transmitter.

[0009] Furthermore, multiple temperature sensors are installed on the processing chamber from top to bottom, and the central control system is connected to the signals of the multiple temperature sensors respectively.

[0010] Furthermore, the air source device includes a variable frequency air compressor and a buffer tank connected in series. A fourth switch valve is installed at the bottom of the buffer tank, and a safety valve and a second pressure transmitter are installed at the top of the buffer tank. The buffer tank and the air supply pipeline are connected through an air filter. The central control system is connected to the variable frequency air compressor, the safety valve and the second pressure transmitter respectively.

[0011] Furthermore, a flow sensor and a third pressure transmitter are installed on the gas pipeline, and the central control system is connected to the flow sensor and the third pressure transmitter respectively.

[0012] Furthermore, the air outlet on the processing chamber is connected to an air outlet pipe, and the body of the air outlet pipe is connected to a first branch pipe with a second switching valve. The end of the first branch pipe away from the air outlet pipe is connected to a hydrocarbon analyzer with an audible and visual alarm and an automatic exhaust valve. The central control system is connected to the audible and visual alarm, the automatic exhaust valve, and the hydrocarbon analyzer.

[0013] Furthermore, a sampling tube is connected to the first branch pipe located between the hydrocarbon analyzer and the second switching valve, and a third switching valve is installed on the sampling tube.

[0014] Furthermore, a second branch pipe is connected to the gas transmission pipeline, and a second regulating valve and a fifth switching valve are installed on the second branch pipe. The end of the second branch pipe away from the gas transmission pipeline is connected to a liquid nitrogen tank.

[0015] The beneficial effects of this utility model by adopting the above technical solution are as follows: This invention, based on existing gas source devices and processing chambers, incorporates a multi-segment flow guiding device, including a conical cylinder that is wider at the top and narrower at the bottom. This facilitates the discharge of viscous bulk materials while reducing the amount of material falling into the processing chamber per unit time compared to existing technologies, thereby extending the residence time of the viscous bulk materials and ensuring the fluidization treatment effect. Furthermore, during the discharge process, as the viscous bulk materials fall sequentially onto the inclined surfaces of multiple conical cylinders, they can also be broken up to a certain extent, reducing agglomeration. Additionally, the decreasing size of the multiple flow guiding components from top to bottom further extends the residence time of the viscous bulk materials in the processing chamber. In summary, this invention, when in use, can extend the residence time of viscous bulk materials in the processing chamber, ensuring the fluidization treatment effect. Attached Figure Description

[0016] Figure 1This is a schematic diagram of the structure of this utility model; Figure 2 This is one of the structural schematic diagrams of some of the devices of this utility model; Figure 3 This is the second schematic diagram of the structure of part of the device of this utility model; Figure 4 This is the third schematic diagram of the structure of part of the device of this utility model.

[0017] Attached reference numerals: 1. Gas pipeline; 2. Hydrocarbon analyzer; 3. Flow guide; 31. Conical cylinder; 32. Straight cylinder; 4. Central control system; 41. PLC control cabinet; 42. Computer; 5. Processing chamber; 6. Gas source device; 61. Variable frequency air compressor; 62. Buffer tank; 63. Fourth switching valve; 64. Safety valve; 65. Second pressure transmitter; 7. Conical discharge cylinder; 8. Air filter; 9. T-connector; 10. Feed pipe; 1. First switching valve; 12. Collector; 13. Vacuum sensor; 14. First regulating valve; 15. First pressure transmitter; 16. Gas outlet pipe; 17. Second switching valve; 18. First branch pipe; 19. Sampling pipe; 20. Third switching valve; 21. Sampling bag; 22. Temperature sensor; 23. Flow sensor; 24. Third pressure transmitter; 25. Second branch pipe; 26. Second regulating valve; 27. Fifth switching valve; 28. Liquid nitrogen tank. Detailed Implementation

[0018] To make the objectives, technical solutions, and beneficial effects of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0019] Example 1 like Figures 1 to 4 As shown, this utility model provides a bulk material handling device, including an air source device 6 and a vertically distributed handling chamber 5. The top of the handling chamber 5 has an inlet and an outlet. Specifically, an inlet pipe 10 is connected to the inlet, allowing viscous bulk materials to fall into the handling chamber 5 through the inlet pipe 10 during use. The cold air entering the handling chamber 5 can be discharged outwards through the outlet. The bottom of the handling chamber 5 is connected to a vertically distributed multi-segment flow guiding device. The multi-segment flow guiding device includes multiple sets of flow guiding components 3 connected sequentially from top to bottom. Each set of flow guiding components 3 includes a conical cylinder 31 and a straight cylinder 32 arranged coaxially and connected from top to bottom. The conical cylinders 31 are all conical structures with a wider top and narrower bottom. Specifically, as shown... Figure 4 As shown, the vertical cross-section of the conical cylinder 31 is an isosceles trapezoid. If we assume that the acute angle between the two inclined surfaces of the conical cylinder 31 is A, the range of A can be set to 20-70 degrees.

[0020] The conical cylinder 31 of the top guide member 3 is connected to the processing chamber 5. Specifically, the inner diameter of the top of the top conical cylinder 31 is matched with the inner diameter of the bottom opening of the processing chamber 5. A first switching valve 11 is installed on the straight cylinder 32 of the bottom guide member 3. Specifically, a conical discharge cylinder 7 is coaxially connected to the bottom end of the multi-segment guide device. The conical discharge cylinder 7 is wider at the top and narrower at the bottom to facilitate the discharge of viscous bulk materials. The first switching valve 11 is installed at the bottom opening of the conical discharge cylinder 7, and the first switching valve 11 can be configured as a rotary valve. When fluidizing viscous bulk materials, the first switching valve 11 is in the open position. The system is designed for continuous output of bulk materials. During use, a collector 12 can be installed below the first switch valve 11 to hold the bulk materials. In addition, the bulk materials can be weighed and recorded before being transported to the processing bin 5. The bulk material loss rate can be calculated by weighing the bulk materials in the collector 12. The straight cylinder 32 of the guide member 3 at the bottom is connected to the air source device 6 through an air supply pipe 1. Specifically, during use, the air source device 6 can blow air into the multi-stage guide device to fluidize the viscous bulk materials that fall sequentially along the processing bin 5 and multiple sets of guide members 3 under gravity by air backflushing.

[0021] Specifically, based on the existing gas source device 6 and processing chamber 5, a multi-stage flow guiding device is set up, which includes a conical cylinder 31 that is wide at the top and narrow at the bottom. This facilitates the discharge of viscous bulk materials and, compared with the existing technology, reduces the amount of viscous bulk materials discharged into the processing chamber 5 per unit time, thereby extending the residence time of the viscous bulk materials in the processing chamber 5 and ensuring the fluidization treatment effect. In addition, during the discharge process, when the viscous bulk materials fall sequentially on the inclined surfaces of multiple conical cylinders 31, the viscous bulk materials can also be broken up to a certain extent to reduce agglomeration.

[0022] Secondly, such as Figure 1 and Figure 2 As shown, the size of the multiple sets of guide members 3 decreases from top to bottom. In this way, when the bulk material passes through the multiple sets of guide members 3 in sequence, the amount of bulk material falling per unit time will gradually slow down, which can prolong the residence time of the bulk material in the fluidization position. In general, when this utility model is used, it can prolong the residence time of viscous bulk material in the processing chamber 5 to ensure the fluidization treatment effect.

[0023] Furthermore, such as Figure 1As shown, the straight cylinder 32 of each group of guide members 3 is connected to the air source device 6 through the air supply pipe 1. For example, if the guide members 3 are set into two groups, the air supply pipe 1 connected to the two groups of guide members 3 can be connected to the air source device 6 through the three-way pipe 9. In this way, air can be blown into the multi-section guide device from multiple positions for easy use. The bottom of the conical cylinder 31 of each group of guide members 3 extends into the straight cylinder 32. The air supply pipe 1 is set horizontally, and the end of the air supply pipe 1 near the straight cylinder 32 is opposite to the bottom of the conical cylinder 31. In this way, when in use, the cold air output from the air supply pipe 1 can be blown onto the outer wall of the conical cylinder 31 to disperse the cold air. The dispersed cold air can then rise along the circumference of the conical cylinder 31. Compared with the direct blowing method, this can, to a certain extent, avoid the problem that the amount of gas gathered at the direct blowing output position is much greater than the amount of gas around it, thus avoiding the impact on the uniformity of the bulk material fluidization.

[0024] Furthermore, such as Figure 1 and Figure 2 As shown, a vacuum sensor 13 capable of collecting the vacuum level inside the processing chamber 5 is installed on the processing chamber 5. The vacuum sensor 13 is connected to the central control system 4. A first regulating valve 14 is installed on the gas supply pipeline 1. The central control system 4 is connected to the gas source device 6, the vacuum sensor 13, and the first regulating valve 14. Specifically, the central control system 4 consists of a PLC control cabinet 41 and a computer 42 as in the prior art. During use, various parameters required for the fluidization process can be set in the central control system 4. The central control system 4 can also display the data and operating status of each electrical component connected to the central control system 4 in real time and supports data storage and export.

[0025] During use, the central control system 4 dynamically adjusts the vacuum level in the processing chamber 5 by controlling the gas source device 6 and the first regulating valve 14, based on the real-time vacuum level data collected by the vacuum sensor 13. For example, when the vacuum level in the processing chamber 5 increases due to continuous feeding of bulk material, the central control system 4 can automatically increase the gas flow rate in the gas delivery pipeline 1 by controlling the first regulating valve 14. If the vacuum level in the processing chamber 5 decreases due to a large amount of gas escaping, the degassing gas flow rate is reduced to ensure a stable degassing environment and avoid energy waste.

[0026] Furthermore, a first pressure transmitter 15 is installed on the processing chamber 5, and the central control system 4 is connected to the first pressure transmitter 15. Specifically, during use, the first pressure transmitter 15 can be used to monitor the pressure fluctuations in the processing chamber 5 in real time. This helps the operators to release pressure in a timely manner when the pressure exceeds the set threshold due to pipeline blockage or other reasons.

[0027] Since existing technologies typically utilize external devices to adjust the temperature inside the processing chamber 5, to facilitate monitoring of whether the temperature inside the processing chamber 5 is suitable, therefore, as Figure 2 As shown, multiple temperature sensors 22 are installed on the processing chamber 5 from top to bottom. The central control system 4 is connected to the multiple temperature sensors 22. Specifically, during use, the multiple temperature sensors 22 can measure the temperature of each position in the processing chamber 5 in real time, so that the temperature in the processing chamber 5 can be adjusted to a suitable temperature through external equipment. For example, by cooling the processing chamber 5, the stickiness between viscous bulk materials can be further reduced, and agglomeration can be avoided.

[0028] Furthermore, such as Figure 1 As shown, the air source device 6 includes a variable frequency air compressor 61 and a buffer tank 62 connected in series. A fourth switching valve 63 is installed at the bottom of the buffer tank 62, and a safety valve 64 and a second pressure transmitter 65 are installed at the top of the buffer tank 62. The second pressure transmitter 65 can monitor the pressure inside the buffer tank 62 in real time. The buffer tank 62 is connected to the air supply pipeline 1 through an air filter 8. The central control system 4 is connected to the variable frequency air compressor 61, the safety valve 64, and the second pressure transmitter 65 respectively. Specifically, when the pressure inside the buffer tank 62 is too high, the central control system 4 can automatically open the safety valve 64 to release pressure; or it can open the fourth switching valve 63 to release pressure. The central control system 4 can control the variable frequency air compressor 61 through the real-time data fed back by the vacuum sensor 13 to gradually increase the vacuum level in the processing chamber 5 to the target range and maintain stability.

[0029] Furthermore, such as Figure 1 As shown, a flow sensor 23 and a third pressure transmitter 24 are installed on the gas pipeline 1. The central control system 4 is connected to the flow sensor 23 and the third pressure transmitter 24 respectively. Specifically, the third pressure transmitter 24 can monitor the pressure in the gas pipeline 1 in real time; while the flow sensor 23 can monitor the flow rate of the gas in the gas pipeline 1 in real time.

[0030] Furthermore, this invention can also be used to test the parameters required for fluidization of different viscous bulk materials. Specifically, when fluidizing a certain type of bulk material, the central control system 4 can store and export various parameters when the fluidization effect of that viscous bulk material reaches the relevant standards, such as gas flow rate, fluidization time, vacuum degree at each time period, temperature of each temperature control zone, and pressure safety threshold, to provide a theoretical basis for the fluidization of different bulk materials. In this way, when fluidizing the tested bulk material, the relevant parameters can be set directly in the central control system 4 according to the characteristics of the bulk material, such as particle size, to avoid the fluidization effect being affected by the parameters being out of sync with the actual characteristics of the bulk material. For example, if the flow rate is insufficient or the time is too short, the viscosity of the viscous bulk material will not drop to the target value, which may easily cause blockage of the conveying pipeline and wall formation on the inner wall of the silo, affecting the performance of subsequent processes.

[0031] In addition, the processing chamber 5 of this utility model is also provided with an openable and closable maintenance door, and a sealing element is provided on the maintenance door. Specifically, after the test is completed, the maintenance door can be opened to clean up the loose material remaining in the processing chamber 5, so as to avoid the mixing of different loose materials and affect the test results.

[0032] Example 2 In existing technologies, the bulk materials produced after polymerization reactions often contain a large amount of harmful, flammable, and explosive gases, such as unreacted monomers and volatile solvents. These harmful gases need to be fully volatilized in the treatment chamber 5 through air backflushing to reduce the concentration of harmful gases in the bulk materials to the target standard before the bulk materials flow into the next process. Based on the corresponding structure disclosed in Example 1, this embodiment can also be applied to degassing bulk materials. The difference is that when degassing bulk materials, the first switch valve 11 is closed, and the air source device 6 outputs hot air to reduce the adsorption force of harmful gases in the bulk materials and assist the gases to escape. Since the harmful gases are less likely to escape from the bulk materials closer to the bottom of the degassing position, the function of the multi-stage flow guiding device is to reduce the amount of bulk materials at the bottom of the degassing position to avoid excessive accumulation of bulk materials at the bottom, which would hinder the volatilization of harmful gases in the bulk materials.

[0033] In addition, such as Figures 1 to 3As shown, the air outlet on the processing chamber 5 is connected to an air outlet pipe 16. The body of the air outlet pipe 16 is connected to a first branch pipe 18 equipped with a second switch valve 17. The end of the first branch pipe 18 away from the air outlet pipe 16 is connected to a hydrocarbon analyzer 2 equipped with an audible and visual alarm and an automatic exhaust valve. Specifically, the central control system 4 is connected to the audible and visual alarm, the automatic exhaust valve, and the hydrocarbon analyzer 2. The hydrocarbon analyzer 2 is existing technology. In use, the hydrocarbon analyzer 2 can be used to monitor the concentration data of harmful gases in the bulk material and can transmit the concentration data to the central control system 4 in real time. By setting up the hydrocarbon analyzer 2, it is easy to determine whether the concentration of harmful gases in the bulk material has dropped to the target standard, thereby making it easier to control the degassing time. When fluidizing viscous bulk material, the second switch valve 17 can be closed.

[0034] Furthermore, such as Figure 1 As shown, a sampling tube 19 is connected to the first branch pipe 18 located between the hydrocarbon analyzer 2 and the second switch valve 17. A third switch valve 20 is installed on the sampling tube 19. Specifically, during use, a sampling bag 21 can be attached to the end of the sampling tube 19 away from the first branch pipe 18. Then, when the third switch valve 20 is opened, it is convenient to sample and study the gas.

[0035] Since hot air is introduced into the air source device 6 during the degassing process of the bulk material in this embodiment, therefore, Figure 1 As shown, a second branch pipe 25 is connected to the gas transmission pipeline 1. A second regulating valve 26 and a fifth switching valve 27 are installed on the second branch pipe 25. The end of the second branch pipe 25 away from the gas transmission pipeline 1 is connected to a liquid nitrogen tank 28. Specifically, during use, if the gas temperature in the degassing system is too high, the fifth switching valve 27 can be opened to supply liquid nitrogen into the gas transmission pipeline 1 for cooling to avoid safety accidents. The flow rate of liquid nitrogen can be adjusted through the second regulating valve 26.

[0036] Similarly, this embodiment can be used to test the parameters required for degassing different bulk materials. Specifically, when degassing a certain type of bulk material, the central control system 4 can store and export various parameters of the bulk material before it flows into the next process, such as: degassing flow rate, degassing time, vacuum degree at each time period, temperature of each temperature control zone, pressure safety threshold, gas concentration safety threshold, pressure and gas concentration change curve, and gas content of the material before and after degassing, so as to provide a theoretical basis for the degassing treatment of different bulk materials. In this way, when degassing the tested bulk material, the relevant parameters can be set directly in the central control system 4 according to the characteristics of the bulk material, such as particle size and initial gas content, so as to avoid the situation where harmful gas residue exceeds the standard or excessive backflushing causes dust to be generated due to the parameters being out of sync with the actual characteristics of the bulk material, thereby maintaining the stability of the degassing process.

[0037] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. 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 claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A bulk material handling device, comprising an air source device and vertically distributed handling chambers, characterized in that: The top of the processing chamber is provided with a feed inlet and an air outlet, and the bottom of the processing chamber is connected to a vertically distributed multi-segment flow guiding device. The multi-segment flow guiding device includes multiple sets of flow guiding components connected sequentially from top to bottom. Each set of flow guiding components includes a conical cylinder and a straight cylinder arranged coaxially and connected from top to bottom. The conical cylinders are all conical structures with a wider top and a narrower bottom. The conical cylinder of the flow guiding component at the top is connected to the processing chamber. The straight cylinder of the flow guiding component at the bottom is equipped with a first switching valve, and the straight cylinder of the flow guiding component at the bottom is connected to the air source device through an air transmission pipeline. The dimensions of the multiple sets of flow guides decrease sequentially from top to bottom.

2. The bulk material handling device according to claim 1, characterized in that: Each set of guide tubes has a straight cylinder connected to a gas source device via a gas pipeline, and the bottom of the conical cylinder of each set of guide tubes extends into the straight cylinder. The gas pipeline is horizontally arranged, and the end of the gas pipeline near the straight cylinder is opposite to the bottom of the conical cylinder.

3. The bulk material handling device according to claim 1, characterized in that: The processing chamber is equipped with a vacuum sensor capable of collecting the vacuum level inside the processing chamber. The vacuum sensor signal is connected to the central control system. The gas supply pipeline is equipped with a first regulating valve. The central control system is connected to the gas source device, the vacuum sensor, and the first regulating valve.

4. The bulk material handling device according to claim 3, characterized in that: A first pressure transmitter is installed on the processing chamber, and the central control system is connected to the first pressure transmitter via signal.

5. The bulk material handling device according to claim 3, characterized in that: The processing chamber is equipped with multiple temperature sensors from top to bottom, and the central control system is connected to the signals of the multiple temperature sensors respectively.

6. The bulk material handling device according to claim 3, characterized in that: The air source device includes a variable frequency air compressor and a buffer tank connected in series. A fourth switch valve is installed at the bottom of the buffer tank, and a safety valve and a second pressure transmitter are installed at the top of the buffer tank. The buffer tank and the air supply pipeline are connected through an air filter. The central control system is connected to the variable frequency air compressor, the safety valve and the second pressure transmitter respectively.

7. A bulk material handling device according to claim 3, characterized in that: The gas pipeline is equipped with a flow sensor and a third pressure transmitter, and the central control system is connected to the flow sensor and the third pressure transmitter respectively.

8. A bulk material handling device according to claim 3, characterized in that: The air outlet on the processing chamber is connected to an air outlet pipe, and the body of the air outlet pipe is connected to a first branch pipe with a second switch valve. The end of the first branch pipe away from the air outlet pipe is connected to a hydrocarbon analyzer with an audible and visual alarm and an automatic exhaust valve. The central control system is connected to the audible and visual alarm, the automatic exhaust valve and the hydrocarbon analyzer respectively.

9. A bulk material handling device according to claim 8, characterized in that: A sampling tube is connected to the first branch pipe located between the hydrocarbon analyzer and the second switching valve, and a third switching valve is installed on the sampling tube.

10. A bulk material handling device according to claim 1, characterized in that: The gas transmission pipeline is connected to a second branch pipe, on which a second regulating valve and a fifth switching valve are installed, and the end of the second branch pipe away from the gas transmission pipeline is connected to a liquid nitrogen tank.

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