A pneumatic conveying system and a charging system

Abstract

The utility model relates to powder material loading technical field, concretely relates to a pneumatic conveying system and loading system. The utility model provides a pneumatic conveying system including the first sending jar for containing material and the finished product bin with first sending jar through first feeding line intercommunication, first feeding line is equipped with first air supply subassembly, and the first sending jar is equipped with the first air inlet for the inert gas, the finished product bin is communicated with screening device in the blanking port of finished product bin, and the finished product bin is communicated with finished product bin dust removal device, and finished product bin dust removal device is equipped with finished product bin pressure relief subassembly. Through setting up first sending jar and through first feeding line intercommunication finished product bin, utilize inert gas protection effect and the effect of blowing to make material enter finished product bin, and through setting up finished product bin dust removal device and pressure relief, system is in the slightly positive pressure state, avoids material contact air, is applicable to the loading transportation of air sensitivity high, strong corrosive lithium salt powder material.

Description

Technical Field

[0001] This utility model relates to the field of powder material loading technology, specifically to an airflow conveying system and a loading system. Background Technology

[0002] Powder material tank trucks (i.e., powder material transport vehicles) are key equipment for modern industrial bulk material transportation and are widely used in chemical, food, and building materials industries. A powder material transport vehicle consists of a chassis system, transmission system, tank body, and piping system. A feed inlet is located at the top of the tank body. Loading powder materials involves transferring them from the silo into the tank truck through the feed inlet via a loading system or device.

[0003] Existing powder material transport vehicles can meet the fineness requirements of product materials by loading them through screening units, thus ensuring product quality. For example, Chinese utility model patent CN208898159U, authorized on May 24, 2019, discloses a bulk material unloading device, including a hopper, a feeding unit, an air supply unit, and a support frame. The support frame is equipped with a discharge pipe for filling materials into cement tank trucks. It also includes a screening unit, which includes an upper shell and a lower shell. The inlet of the upper shell is connected to the discharge elbow of the feeding unit. A vibrating screen is installed inside the upper shell, and a discharge chute is installed below the vibrating screen inside the lower shell. The screened fine cement material is fed into the slag discharge pipe through the discharge chute and then into the tank of the cement tank truck. This can prevent lumpy materials from entering the cement tank truck tank along with the powdery materials, thereby improving the fineness of the cement and ensuring product quality.

[0004] However, the above-mentioned unloading device is mainly designed for cement. Cement itself is not highly corrosive and is not very sensitive to air. However, if it is to load powdery materials such as lithium salts used in the preparation of secondary batteries, lithium salt powder cannot be exposed to air and is highly corrosive. When using the above-mentioned unloading device to load lithium salt powder, the quality of the lithium salt powder will not meet the requirements for use, and it will pose a great threat to the personal safety of the operators. Therefore, there is an urgent need for a loading system suitable for powdery materials that are highly sensitive to air and highly corrosive. Utility Model Content

[0005] The first objective of this invention is to provide an airflow conveying system that solves the problem that existing conveying devices are not suitable for powdery materials that are highly sensitive to air and highly corrosive.

[0006] The second objective of this invention is to provide a feeding system that solves the problem that existing feeding devices are not suitable for powdery materials that are highly sensitive to air and highly corrosive.

[0007] To solve the above-mentioned technical problems, the technical solution of the airflow conveying system of this utility model is as follows: An airflow conveying system includes a first feeding tank for containing materials and a finished product silo connected to the first feeding tank via a first feeding pipeline; the first feeding pipeline is equipped with a first air supply assembly for introducing inert gas to convey the material in the first feeding tank to the finished product silo along the first feeding pipeline; the first feeding tank is provided with a first air inlet for introducing inert gas; the discharge port of the finished product silo is connected to a screening device; the finished product silo is connected to a finished product silo dust removal device, and the finished product silo dust removal device is provided with a finished product silo pressure relief assembly for releasing pressure when the pressure inside the finished product silo dust removal device increases to a limit pressure.

[0008] This utility model innovatively provides an airflow conveying system, which includes a first sending tank and a finished product silo connected by a first feeding pipeline. The first sending tank is provided with a first air inlet for introducing inert gas. Inert gas is introduced through the first air inlet of the first sending tank, so that the powdered material in the first sending tank is in an inert gas environment. The first air supply component installed in the first feeding pipeline provides power for the inert gas to overcome the movement resistance and be conveyed to the finished product silo along the first feeding pipeline. The finished product silo dust removal device connected to the finished product silo can remove dust from the inert gas containing the material in the finished product silo during material conveying, and release pressure when the pressure in the finished product silo dust removal device increases to the limit pressure. The pneumatic conveying system of this embodiment can keep the system in an inert gas atmosphere and under slight positive pressure at all times; the powdered material is prevented from contacting the air and the possibility of operators coming into contact with highly corrosive materials is greatly reduced, so as to achieve safe and efficient loading of powdered materials that are highly sensitive to air and highly corrosive, and ensure the high quality of the material; at the same time, it can reduce the material breakage rate by using a low-pressure, low-speed, and low-loss conveying design.

[0009] Preferably, the first air supply assembly includes a main air supply pipeline located upstream of the first feeding pipeline and connected to the first feeding pipeline, and an auxiliary air supply pipeline disposed on the side wall of the first feeding pipeline and connected to the first feeding pipeline.

[0010] Preferably, it further includes a first buffer bin for receiving materials produced by the production system and a buffer bin dust removal device connected to the first buffer bin; the discharge port of the first buffer bin is connected to a first sending tank, and the first sending tank is connected to the buffer bin dust removal device; the buffer bin dust removal device is provided with a buffer bin pressure relief component for releasing pressure when the pressure inside the buffer bin dust removal device increases to a limit pressure.

[0011] Preferably, it further includes a second sending tank for containing unqualified materials screened out by the screening device. The second sending tank is connected to a second feeding pipeline, and the second feeding pipeline is equipped with a second air supply assembly for introducing inert gas to transport the material in the second sending tank along the second feeding pipeline. The second sending tank is provided with a second air inlet for introducing inert gas.

[0012] Preferably, it further includes a second buffer chamber connected to the screening device for receiving unqualified materials screened out by the screening device; the discharge port of the second buffer chamber is connected to the second sending tank, and the second buffer chamber and the second sending tank are respectively connected to the dust removal device of the finished product silo.

[0013] The technical solution of the feeding system of this utility model is as follows: A material handling system includes a production system for producing materials and an air conveying system. The air conveying system includes a first delivery tank for containing materials produced by the production system and a finished product silo connected to the first delivery tank via a first feeding pipeline. The first feeding pipeline is equipped with a first air supply assembly for introducing inert gas to convey the material in the first delivery tank to the finished product silo along the first feeding pipeline. The first delivery tank is provided with a first air inlet for introducing inert gas. The discharge port of the finished product silo is connected to a screening device. The finished product silo is connected to a finished product silo dust removal device, which is equipped with a finished product silo pressure relief assembly for releasing pressure when the pressure inside the finished product silo dust removal device increases to a limit pressure.

[0014] The material loading system of this invention can be directly integrated with the production system. The materials produced by the production system can be directly transported through the pneumatic conveying system. The pneumatic conveying system includes a first sending tank and a finished product silo connected by a first feeding pipeline. The first sending tank is equipped with a first air inlet for introducing inert gas. Inert gas is introduced through the first air inlet of the first sending tank, and the first air supply component installed in the first feeding pipeline provides power for the inert gas to overcome the resistance of movement and be transported along the first feeding pipeline to the screening unit for screening. Qualified materials and unqualified materials are screened out. Qualified materials can be loaded into tank trucks. The pneumatic conveying system can keep the system in an inert gas atmosphere and in a slightly positive pressure state at all times. The powdered materials are prevented from contacting air, and the possibility of operators coming into contact with highly corrosive materials is greatly reduced, realizing safe and efficient loading of powdered materials that are highly sensitive to air and highly corrosive.

[0015] Preferably, the first air supply assembly includes a main air supply pipeline located upstream of the first feeding pipeline and connected to the first feeding pipeline, and an auxiliary air supply pipeline disposed on the side wall of the first feeding pipeline and connected to the first feeding pipeline.

[0016] Preferably, a first buffer chamber is connected between the material outlet of the production system and the first sending tank, and a buffer chamber dust removal device is provided on the first buffer chamber; the discharge port of the first buffer chamber is connected to the first sending tank, and the first sending tank is connected to the buffer chamber dust removal device; the buffer chamber dust removal device is provided with a buffer chamber pressure relief component, which is used to relieve pressure when the pressure inside the buffer chamber dust removal device increases to the limit pressure.

[0017] Preferably, it further includes a second sending tank for containing unqualified materials screened out by the screening device. The second sending tank is connected to a second feeding pipeline, and the second feeding pipeline is equipped with a second air supply assembly for introducing inert gas to transport the material in the second sending tank along the second feeding pipeline. The second sending tank is provided with a second air inlet for introducing inert gas.

[0018] Preferably, it further includes a second buffer chamber connected to the screening device for receiving unqualified materials screened out by the screening device; the discharge port of the second buffer chamber is connected to the second sending tank, and the second buffer chamber and the second sending tank are respectively connected to the dust removal device of the finished product silo. Attached Figure Description

[0019] Figure 1 This is a flowchart of the loading system of Embodiment 1 of this utility model; Figure 2 This is a flowchart of the loading system of Embodiment 2 of this utility model; In the attached diagram: 1. Production system; 11. Drying oven discharge screw; 2. Pneumatic conveying system; 21. First feeding unit; 211. Buffer silo bag filter; 2111. First exhaust pipe; 2112. First pressure relief valve; 212. First buffer silo; 2121. First buffer silo feed pipe; 2122. First buffer silo exhaust pipe; 2123. First buffer silo exhaust valve; 213. First sending tank; 2131. First sending tank air inlet pipe; 2132. First sending tank air inlet valve; 2133. 2134. Buffer bin discharge valve; 2135. First sending tank exhaust pipe; 214. First sending tank exhaust valve; 215. First sending tank feeding pipe; 216. First sending tank air supply pipe; 217. First auxiliary air supply pipe; 218. First sending tank air supply valve; 219. First auxiliary air supply valve; 2005. First sending tank discharge valve; 2106. Finished product silo feeding valve; 22. Screening unit; 221. Finished product silo; 2211. Finished product silo exhaust pipe; 2212. Finished product... 2213. Finished product silo discharge pipeline; 2214. Star-shaped discharge valve; 222. Screening device; 2221. Circular vibrating screen; 2222. Tanker truck inlet pipeline; 2223. Tanker truck inlet valve; 223. Finished product silo bag filter; 2231. Second exhaust pipeline; 2232. Second pressure relief valve; 23. Second feeding unit; 231. Second buffer silo; 2311. Second buffer silo inlet pipeline; 2312. Second buffer silo exhaust pipeline; 2313. Second buffer silo inlet valve; 2314. Second buffer bin exhaust valve; 232. Second sending tank; 2321. Second sending tank air inlet pipe; 2322. Second sending tank air inlet valve; 2323. Second buffer bin discharge valve; 2324. Second sending tank exhaust pipe; 2325. Second sending tank exhaust valve; 233. Second sending tank feeding pipe; 2331. Second sending tank air supply pipe; 2332. Second sending tank air supply pipe; 2333. Second sending tank air supply valve; 2334. Second auxiliary air supply valve; 3. Tanker truck. Detailed Implementation

[0020] The technical concept of the airflow conveying system provided by this utility model is as follows: Lithium salts, widely used as electrolyte components and intermediates, are key materials in the secondary battery field, including lithium hexafluorophosphate, lithium bis(fluorosulfonyl)imide, and lithium bis(oxalato)borate. However, lithium salts are highly hygroscopic. For example, lithium hexafluorophosphate hydrolyzes to produce lithium fluoride and hydrogen fluoride. Hydrogen fluoride is highly corrosive and toxic, and it also degrades the effective components of lithium salts, causing the electrolyte conductivity to drop by more than 30% during subsequent use, severely affecting the performance of secondary batteries. Therefore, the loading and transportation of lithium salts has become a major challenge, and how to safely and with low weight loss load and transport lithium salts has become an urgent problem to be solved in the industry.

[0021] Existing loading devices use a screening unit at the discharge bend of the hopper to screen the material coming out of the discharge bend, preventing lumpy material from entering the tanker along with powdery material. However, the screen of the screening unit is located inside the upper shell, so the material will be in direct contact with the air. Furthermore, during the high-frequency vibration screening process, there is material splashing, making it unsuitable for lithium salt powdery materials that are highly sensitive to air and highly corrosive.

[0022] This invention comprises a first feeding tank and a finished product silo connected by a first feeding pipeline. The first feeding tank is equipped with a first air inlet for introducing inert gas. Utilizing the protective effect of inert gas, the entire system is placed in an inert gas atmosphere. The powdery material from the first feeding unit is purged into the finished product silo by the blowing effect of the inert gas. The pressure is then released by the pressure relief component of the dust removal device in the finished product silo, keeping the system in a slightly positive pressure state. This prevents the material from contacting air and is suitable for loading and transporting lithium salt powdery materials that are highly sensitive to air and highly corrosive, ensuring the effective composition of the material and the safety of the loading process.

[0023] The implementation of this utility model will be further described below with reference to specific embodiments.

[0024] I. Specific Embodiments of the Feeding System of this Utility Model Example 1 The flowchart of the loading system in this embodiment is as follows: Figure 1 As shown, the system includes a production system 1 for producing materials and an air conveying system 2. The production system 1 includes a discharge device, which includes a drying oven discharge screw 11, through which powdered materials are discharged.

[0025] The pneumatic conveying system 2 includes a first feeding unit 21 and a screening unit 22. The first feeding unit 21 includes a buffer bin bag filter 211, a first buffer bin 212, and a first sending tank 213 arranged sequentially from top to bottom.

[0026] The buffer chamber bag filter 211 has a first air inlet, a second air inlet, and a first exhaust port. The first exhaust port is connected to a first exhaust pipe 2111. The first exhaust pipe 2111 is equipped with a first pressure relief valve 2112, which is used to relieve pressure when the pressure inside the buffer chamber bag filter increases to the limit pressure. The limit pressure is 0.2MPa and is controlled by an online pressure valve.

[0027] The upper side of the first buffer chamber 212 is provided with a first buffer chamber inlet and a first buffer chamber exhaust port. The first buffer chamber inlet is connected to the first buffer chamber inlet pipe 2121 for allowing the powdery material fed by the screw to enter the first buffer chamber. The lower side of the first buffer chamber 212 is provided with a first buffer chamber outlet. The first buffer chamber exhaust port of the first buffer chamber 212 is connected to the first air inlet of the buffer chamber bag dust collector 211 through the first buffer chamber exhaust pipe 2122. The first buffer chamber exhaust pipe is provided with a first buffer chamber exhaust valve 2123.

[0028] The upper side of the first sending tank 213 is provided with a first sending tank air inlet, a first sending tank feed inlet, and a first sending tank exhaust port. The first sending tank air inlet is connected to a first sending tank air inlet pipe 2131 for introducing inert gas, such as nitrogen. The first sending tank air inlet pipe 2131 is provided with a first sending tank air inlet valve 2132. The first sending tank feed inlet is connected to the first buffer bin discharge port. A first buffer bin discharge valve 2133 is provided between the first sending tank feed inlet and the first buffer bin discharge port for allowing the powdery material in the first buffer bin to enter the first sending tank when opened. The first sending tank exhaust port is connected to the second air inlet of the buffer bin bag filter dust collector through a first sending tank exhaust pipe 2134. The first sending tank exhaust pipe 2134 is provided with a first sending tank exhaust valve 2135. The lower side of the first sending tank is provided with a first sending tank discharge port.

[0029] The screening unit 22 includes a finished product silo 221 and a screening device 222 arranged sequentially from top to bottom. The finished product silo 221 has a finished product silo inlet and a finished product silo exhaust outlet on its upper side. The first discharge port of the first sending tank 213 is connected to the finished product silo inlet via a first sending tank feeding pipe 214. The first discharge port of the first sending tank is connected to a first sending tank air supply pipe 2141. The first sending tank air supply pipe is connected to a portion of the first sending tank feeding pipe near the first sending tank. Auxiliary air inlets are equidistantly spaced on the side wall of the first sending tank feeding pipe 214. Figure 1 (Not shown in the image) Each auxiliary air inlet is connected to a first auxiliary air supply pipe 2142. The first sending tank air supply pipe 2141 and multiple first auxiliary air supply pipes 2142 are used to introduce inert gas, such as nitrogen, so that the powdered material in the first sending tank 213 is blown to the finished product silo 221 along the first sending tank feeding pipe 214. The first sending tank air supply pipe 2141 is equipped with a first sending tank air supply valve 2143, and multiple first auxiliary air supply pipes 2142 are equipped with first auxiliary air supply valves 2144. A finished product silo discharge port is opened on the lower side of the finished product silo 221. The first sending tank feeding pipe 214 is equipped with a first sending tank discharge valve 2145 on the side near the first sending tank 213, and a finished product silo feeding valve 2146 on the side near the finished product silo 221.

[0030] It is understandable that the multiple auxiliary air inlets on the side wall of the first feeding tank's feed pipe 214 may not be equidistant.

[0031] The screening unit 22 also includes a finished product silo baghouse dust collector 223. The finished product silo baghouse dust collector 223 has a third air inlet and a second exhaust outlet. The second exhaust outlet is connected to a second exhaust pipe 2231, which is equipped with a second pressure relief valve 2232 for releasing pressure when the pressure inside the finished product silo baghouse dust collector 223 rises to a limit pressure. The third air inlet of the finished product silo baghouse dust collector 223 is connected to the finished product silo exhaust outlet via a finished product silo exhaust pipe 2211.

[0032] The screening device 222 includes two circular vibrating screens 2221. Each of the two circular vibrating screens 2221 has a feed inlet, a discharge outlet, and a slag discharge outlet. The discharge outlet of the finished product silo is connected to the feed inlets of the two circular vibrating screens through two finished product silo discharge pipes 2212. The discharge outlets of the two circular vibrating screens are connected to the tanker truck inlet through a tanker truck inlet pipe 2222. The tanker truck inlet pipe 2222 has a tanker truck inlet valve 2223 on the side near the tanker truck. The powdery material in the finished product silo 221 enters the circular vibrating screen 2221 for screening. The powdery material that meets the particle size requirements enters the tanker truck 3 through the tanker truck inlet pipe 2222, while the powdery material that does not meet the particle size requirements is discharged through the slag discharge outlet of the circular vibrating screen for further processing. Each finished product hopper discharge pipe 2212 has a finished product hopper discharge valve 2213 on the side near the finished product hopper 221, and a star-shaped discharge valve 2214 on the side near the circular vibrating screen. In this embodiment, all valves in the loading system are independently controlled by a PLC control cabinet.

[0033] Each circular vibrating screen 2221 has two layers of screens. The first layer is used to remove large particles of material, and the second layer is used to filter out small particles that do not meet the requirements. The material that meets the required particle size is transported into the tanker truck feed pipe 2222 and then into the tanker truck 3.

[0034] It should be noted that the materials of each device in the loading system are preferably corrosion-resistant materials, and the polishing precision of the inner surface of each device and pipeline is not less than 0.4μm; the internal welds are required to be fully welded and ground flat and smooth to ensure that no impurities fall off during transportation.

[0035] When the loading system of this embodiment is running, the discharge screw 11 of the drying furnace is opened, and the powdered material is fed through the screw and enters the first buffer chamber 212 through the feed pipe 2121 of the first buffer chamber. At the same time, nitrogen is introduced into the first buffer chamber 212. The material level gauge of the first buffer chamber 212 measures the material level. When the material level of the first buffer chamber 212 reaches a certain value, the discharge valve 2133 of the first buffer chamber and the exhaust valve 2135 of the first sending tank are opened through the PLC control cabinet. The exhaust valve 2123 of the first buffer chamber is normally open during the material feeding period, so that the pressure at both ends of the first sending tank 213 and the first buffer chamber 212 is constant, and the first buffer chamber 212 begins to feed material into the first sending tank 213. The buffer chamber bag dust collector 211 is equipped with a pressure detection device and low pressure and over pressure alarm devices. When the first buffer chamber 212 receives the material produced by the production system, and when the material enters the first sending tank 213, it removes dust from the inert gas containing the material. When the pressure of the buffer chamber bag dust collector 211 gradually rises to a certain level, the first pressure relief valve 2112 opens to relieve pressure.

[0036] When the material level in the first sending tank 213 reaches a certain value, the discharge valve 2133 of the first buffer silo and the exhaust valve 2135 of the first sending tank are closed, so that the first buffer silo 212 stops discharging material. At the same time, the air inlet valve 2132, the air supply valve 2143, multiple first auxiliary air supply valves 2144, and the discharge valve 2145 of the first sending tank are opened. Nitrogen gas is introduced into the air supply pipeline 2141 of the first sending tank and multiple first auxiliary air supply pipelines 2142, so that the powdery material in the first sending tank 213 is blown to the finished product silo 221 along the first sending tank feeding pipeline 214.

[0037] After the finished product silo feeding valve 2146 is opened, the powdery material enters the finished product silo 221. The finished product silo bag filter 223 is equipped with a pressure detection device and low-pressure and over-pressure alarm devices. During material conveying, it removes dust from the inert gas containing the material in the screening unit. When the pressure of the finished product silo bag filter 223 gradually rises to a certain level, the second pressure relief valve 2232 opens to relieve pressure. The finished product silo 221 is equipped with a weighing and metering device. After confirming the weight fluctuation of the finished product silo 221, it indicates that the finished product silo 221 has started feeding. After the tank truck 3 arrives at the designated position and notifies the filling, the finished product silo discharge valve 2213 and the star-shaped discharge valve 2214 are opened in sequence. The powdery material enters the circular vibrating screen 2221 for screening, separating powdery materials of different particle sizes. The powdery material that meets the particle size requirements enters the tank truck 3 through the tank truck feed pipe 2222. The powdery material that does not meet the particle size requirements is discharged through the slag discharge port of the circular vibrating screen for further processing. For example, the material discharged from the slag discharge port of the circular vibrating screen enters the storage device.

[0038] The airflow delivery system in this embodiment is the airflow delivery system provided by this utility model.

[0039] Example 2 The flowchart of the loading system in this embodiment is as follows: Figure 2 As shown, it includes a production system 1 and an air conveying system 2. The production system 1 and the air conveying system 2 are basically the same as those in Embodiment 1, except that the air conveying system 2 also includes a second feeding unit 23. The second feeding unit 23 includes a second buffer chamber 231 and a second sending tank 232 arranged from top to bottom.

[0040] The upper side of the second buffer chamber 231 has a second buffer chamber inlet and a second buffer chamber exhaust port. The second buffer chamber inlet is connected to the slag discharge port of the circular vibrating screen through the second buffer chamber inlet pipe 2311. The finished product silo bag filter dust collector 223 has a fourth air inlet and a fifth air inlet. The second buffer chamber exhaust port is connected to the fourth air inlet through the second buffer chamber exhaust pipe 2312. The second buffer chamber inlet pipe 2311 is equipped with a second buffer chamber inlet valve 2313, and the second buffer chamber exhaust pipe 2312 is equipped with a second buffer chamber exhaust valve 2314. The lower side of the second buffer chamber 231 has a first buffer chamber discharge port.

[0041] The upper side of the second sending tank 232 is provided with a second sending tank air inlet, a second sending tank feed inlet, and a second sending tank exhaust port. The second sending tank air inlet is connected to a second sending tank air inlet pipe 2321 for introducing inert gas, such as nitrogen. The second sending tank air inlet pipe 2321 is provided with a second sending tank air inlet valve 2322. The second sending tank feed inlet is connected to the second buffer bin discharge port. A second buffer bin discharge valve 2323 is provided between the second sending tank feed inlet and the second buffer bin discharge port for allowing the powdery material in the second buffer bin 231 to enter the second sending tank 232 when opened. The second sending tank exhaust port is connected to the fifth air inlet of the finished product bin bag dust collector 223 through the second sending tank exhaust pipe 2324. The second sending tank exhaust pipe 2324 is provided with a second sending tank exhaust valve 2325. The lower side of the second sending tank is provided with a second sending tank discharge port.

[0042] The second sending tank 232's discharge port is connected to a second sending tank feeding pipe 233. The second sending tank's discharge port is connected to a second sending tank air supply pipe 2331. The second sending tank air supply pipe 2332 is connected to a portion of the second sending tank feeding pipe 233 near the second sending tank 232. Auxiliary air inlets are equidistantly spaced on the side wall of the second sending tank feeding pipe 233. Figure 2(Not shown in the image) Each auxiliary air inlet is connected to a second auxiliary air supply pipe 2332. The second sending tank air supply pipe 2331 and multiple second auxiliary air supply pipes 2332 are used to introduce inert gas, such as nitrogen, so that the powdered material in the second sending tank 232 is blown to the storage device along the second sending tank feeding pipe 233. The second sending tank air supply pipe 2331 is equipped with a second sending tank air supply valve 2333, and multiple second auxiliary air supply pipes 2332 are each equipped with a second auxiliary air supply valve 2334.

[0043] The airflow delivery system in this embodiment is the airflow delivery system provided by this utility model.

[0044] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An airflow conveying system, characterized in that, The device includes a first feeding tank for containing materials and a finished product silo connected to the first feeding tank via a first feeding pipeline. The first feeding pipeline is equipped with a first air supply assembly for introducing inert gas to transport the material in the first feeding tank to the finished product silo along the first feeding pipeline. The first feeding tank is provided with a first air inlet for introducing inert gas. The discharge port of the finished product silo is connected to a screening device. The finished product silo is connected to a finished product silo dust removal device, which is provided with a finished product silo pressure relief assembly for releasing pressure when the pressure inside the finished product silo dust removal device increases to a limit pressure.

2. The airflow conveying system as described in claim 1, characterized in that, The first air supply assembly includes a main air supply pipeline located upstream of the first feeding pipeline and connected to the first feeding pipeline, and an auxiliary air supply pipeline disposed on the side wall of the first feeding pipeline and connected to the first feeding pipeline.

3. The pneumatic conveying system as described in claim 1, characterized in that, It also includes a first buffer bin for receiving materials produced by the production system and a buffer bin dust removal device connected to the first buffer bin; the discharge port of the first buffer bin is connected to a first sending tank, and the first sending tank is connected to the buffer bin dust removal device; the buffer bin dust removal device is equipped with a buffer bin pressure relief component for releasing pressure when the pressure inside the buffer bin dust removal device increases to the limit pressure.

4. The pneumatic conveying system as described in claim 1, characterized in that, It also includes a second sending tank for containing unqualified materials screened out by the screening device. The second sending tank is connected to a second feeding pipeline. The second feeding pipeline is equipped with a second air supply assembly for introducing inert gas to transport the material in the second sending tank along the second feeding pipeline. The second sending tank is provided with a second air inlet for introducing inert gas.

5. The pneumatic conveying system as described in claim 4, characterized in that, It also includes a second buffer chamber connected to the screening device for receiving unqualified materials screened out by the screening device; the discharge port of the second buffer chamber is connected to the second sending tank, and the second buffer chamber and the second sending tank are respectively connected to the dust removal device of the finished product silo.

6. A loading system, characterized in that, The system includes a production system for producing materials and a pneumatic conveying system. The pneumatic conveying system includes a first sending tank for containing materials produced by the production system and a finished product silo connected to the first sending tank via a first feeding pipeline. The first feeding pipeline is equipped with a first air supply assembly for introducing inert gas to transport the material in the first sending tank to the finished product silo along the first feeding pipeline. The first sending tank is provided with a first air inlet for introducing inert gas. The discharge port of the finished product silo is connected to a screening device. The finished product silo is connected to a finished product silo dust removal device, which is equipped with a finished product silo pressure relief assembly for releasing pressure when the pressure inside the finished product silo dust removal device increases to a limit pressure.

7. The loading system as described in claim 6, characterized in that, The first air supply assembly includes a main air supply pipeline located upstream of the first feeding pipeline and connected to the first feeding pipeline, and an auxiliary air supply pipeline disposed on the side wall of the first feeding pipeline and connected to the first feeding pipeline.

8. The loading system as described in claim 6, characterized in that, A first buffer chamber is also connected between the material outlet of the production system and the first sending tank. A buffer chamber dust removal device is installed on the first buffer chamber. The discharge port of the first buffer chamber is connected to the first sending tank, and the first sending tank is connected to the buffer chamber dust removal device. The buffer chamber dust removal device is equipped with a buffer chamber pressure relief component, which is used to relieve pressure when the pressure inside the buffer chamber dust removal device increases to the limit pressure.

9. The loading system as described in claim 6, characterized in that, It also includes a second sending tank for containing unqualified materials screened out by the screening device. The second sending tank is connected to a second feeding pipeline. The second feeding pipeline is equipped with a second air supply assembly for introducing inert gas to transport the material in the second sending tank along the second feeding pipeline. The second sending tank is provided with a second air inlet for introducing inert gas.

10. The loading system as described in claim 9, characterized in that, It also includes a second buffer chamber connected to the screening device, used to receive unqualified materials screened out by the screening device; the discharge port of the second buffer chamber is connected to the second sending tank, and the second buffer chamber and the second sending tank are respectively connected to the dust removal device of the finished product silo.

Images