Bin air supply system

Abstract

The utility model belongs to the technical field of gas conveying, and particularly discloses a stock bin gas supply system which comprises a stock bin device, a gas supply device, an exhaust device and a control device, the stock bin device is used for containing raw materials to be reacted, and the gas supply device comprises a reaction gas source pipeline, an inert gas source pipeline and a first bin connecting pipeline. The first ends of the reaction gas source pipeline and the inert gas source pipeline are communicated with a reaction gas source and an inert gas source in a one-to-one correspondence mode, the second ends of the reaction gas source pipeline and the inert gas source pipeline are connected to form a first junction end, the first bin connecting pipeline is communicated with the stock bin device and the first junction end, and the reaction gas source pipeline is sequentially provided with a first on-off valve, a first exhaust valve and a third on-off valve in the gas injection direction. By means of the system, two kinds of gas can be replaced in the pipeline and the stock bin device, automatic operation is achieved in the whole process through the control device, an operator can be prevented from inhaling reaction gas or inert gas, and the safety of the operator is guaranteed.

Description

Technical Field

[0001] This utility model belongs to the field of gas conveying technology, specifically relating to a gas supply system for a silo. Background Technology

[0002] The production process of ternary precursors involves both aerobic and anaerobic reactions. When producing anti-oxidation products, inert gas needs to be introduced to prevent the material from oxidizing.

[0003] A typical silo air supply system includes a high-pressure air source, a silo, and a compressed air or inert gas pipeline connecting the two. However, current silo air supply systems often suffer from unstable atmosphere control, which affects product quality. Furthermore, the valves in the compressed air and inert gas pipelines need to be manually opened and closed, which can easily lead to gas leaks if the operator inhales the inert gas, posing a significant safety hazard. Utility Model Content

[0004] In view of the above-mentioned defects or deficiencies, this utility model provides a silo air supply system, which aims to solve the technical problems of unstable silo atmosphere control, cumbersome operation and great safety hazards in the prior art.

[0005] To achieve the above objectives, this utility model provides a silo gas supply system, including a silo device, a gas supply device, an exhaust device, and a control device. The silo device is used to hold the raw materials to be reacted. The gas supply device includes a reaction gas source pipeline, an inert gas source pipeline, and a first silo pipeline. The first ends of the reaction gas source pipeline and the inert gas source pipeline are respectively connected to the reaction gas source and the inert gas source, and the second ends away from the corresponding gas sources are connected to form a first junction end. The first silo pipeline connects the silo device and the first junction end. The reaction gas source pipeline is provided with a first on / off valve, a first exhaust valve, and a third on / off valve in sequence along the gas injection direction. The inert gas source pipeline is provided with a second on / off valve. The exhaust device is located on the silo device. The control device is used to control the opening and closing of the on / off valve and the exhaust valve respectively.

[0006] When using the aforementioned silo gas supply system, during the production of oxidized products, the control device opens the first on-off valve and closes the first exhaust valve and the second on-off valve, respectively. This opens the reaction gas source pipeline and disconnects the inert gas source pipeline. The reaction gas source injects reaction gas into the silo device through the reaction gas source pipeline and the first silo pipe, allowing the raw materials to undergo an aerobic reaction within the silo device. During the production of anti-oxidized products, the control device first closes the first on-off valve and opens the first exhaust valve, the second on-off valve, and the third on-off valve. This disconnects the reaction gas source pipeline and opens the inert gas source pipeline. The inert gas source injects inert gas into the silo device through the inert gas source pipeline and the first silo pipe, thereby discharging the reaction gas from the reaction gas source pipeline. Once the reaction gas has completely dissipated... After complete discharge, the control device closes the third shut-off valve, ensuring that only inert gas exists in the silo and its connected pipelines. The reactants then undergo an anaerobic reaction. During this subsequent anaerobic reaction, the closure of the first and third shut-off valves prevents the small amount of high-pressure reaction gas overflowing the first shut-off valve from entering the silo, thus improving the stability of the atmosphere within the silo. This system allows for the replacement of two gases within the pipelines and silo, enabling the production of different compounds according to actual production needs. This significantly improves production efficiency. Furthermore, the entire process is automated by the control device, preventing operators from inhaling reaction or inert gases and ensuring their safety.

[0007] In this embodiment of the utility model, a second exhaust valve and a fourth on / off valve are also provided on the inert gas source pipeline. The second exhaust valve and the fourth on / off valve are sequentially arranged between the second on / off valve and the first junction end along the gas injection direction.

[0008] In this embodiment of the utility model, the gas supply device further includes a second compartment pipe, which is used to introduce inert gas into the silo device. The first end of the first compartment pipe and the second compartment pipe are respectively connected to the silo device, and the second end is connected to form a second junction end. The first junction end is connected to the second junction end. A fifth on / off valve that is communicatively connected to the control device is provided on the second compartment pipe.

[0009] In this embodiment of the utility model, the silo device includes a silo body, an air disc device, and a pneumatic striking device. The silo body is used to hold the raw materials to be reacted. The air disc device and the pneumatic striking device are both located at the lower part of the silo body. The first end of the first silo pipe is connected to the air disc device and the pneumatic striking device at the bottom of the silo device, respectively. The first end of the second silo pipe is connected to the silo air inlet at the upper part of the silo body.

[0010] In this embodiment of the invention, a flow detector is also provided on the second bin pipeline, and the flow detector is located between the fifth on / off valve and the bin device.

[0011] In this embodiment of the utility model, the exhaust device includes a filter chamber and a filter. The filter chamber is located on the top of the silo and has an air inlet and an exhaust end. The air inlet of the filter chamber is connected to the silo device. A gas channel is formed between the air inlet and the exhaust end of the filter chamber. The filter is placed in the gas channel and is used to filter the gas passing through the gas channel.

[0012] In this embodiment of the utility model, the exhaust device further includes a fan, a proportional valve, and a concentration detector. The air inlet of the fan is connected to the exhaust end of the filter chamber. The concentration detector is located at the air inlet of the fan and is used to detect the concentration of the reaction gas. The proportional valve is located at the air outlet of the fan. The control device is communicatively connected to the proportional valve and the concentration detector, and is used to control the opening degree of the proportional valve according to the concentration of the reaction gas.

[0013] In this embodiment of the utility model, the filter chamber has a first accommodating cavity and a second accommodating cavity formed sequentially in the direction from the air inlet end to the exhaust end. The filter is placed in the first accommodating cavity. The hopper air supply system also includes a back-blowing device, and the back-blowing nozzle of the back-blowing device is placed in the second accommodating cavity.

[0014] In this embodiment of the invention, the exhaust device further includes a first pressure detector, which has a first detection port and a second detection port. The first detection port is connected to the first accommodating cavity, and the second detection port is connected to the second accommodating cavity, for detecting the pressure difference between the first accommodating cavity and the second accommodating cavity.

[0015] In this embodiment of the invention, the exhaust device further includes a second pressure detector, which is used to detect the pressure value of the second accommodating cavity.

[0016] In this embodiment of the utility model, the backflush device further includes a backflush air manifold and a sixth shut-off valve. The outlet of the backflush air manifold is connected to the sixth shut-off valve and the backflush air nozzle in sequence, and the inlet of the backflush air manifold is connected to the first compartment pipe.

[0017] In this embodiment of the invention, the air supply system for the silo also includes a dust removal tower, which is connected to the air outlet of the fan via a pipeline and is used to collect dust particles discharged by the fan.

[0018] Other features and advantages of this invention will be described in detail in the following detailed description section. Attached Figure Description

[0019] The accompanying drawings are provided to illustrate the present invention and form part of the specification. They are used together with the following detailed description to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0020] Figure 1 This is an overall schematic diagram of the air supply system for the silo according to an embodiment of the present utility model;

[0021] Figure 2 This is a schematic diagram of a gas supply device according to an embodiment of the present invention;

[0022] Figure 3 This is a schematic diagram of the exhaust device and backflushing device according to an embodiment of the present invention;

[0023] Figure 4 This is a schematic diagram of a hopper device according to an embodiment of the present invention;

[0024] Figure 5 This is a detailed schematic diagram of the air supply system for the silo according to an embodiment of the present invention.

[0025] Explanation of reference numerals in the attached figures

[0026] 100. Gas supply device; 110. Reactant gas source pipeline; 111. First on / off valve; 112. First exhaust valve; 113. Third on / off valve; 114. First manual ball valve; 120. Inert gas source pipeline; 121. Second on / off valve; 122. Second exhaust valve; 123. Fourth on / off valve; 124. Second manual ball valve; 130. First compartment pipeline; 140. Second compartment pipeline; 141. Fifth on / off valve; 142. Flow detector; 143. Manual regulating valve;

[0027] 200. Exhaust device; 210. Filter chamber; 211. First receiving cavity; 2111. Filter; 212. Second receiving cavity; 220. Fan; 230. Proportional valve; 240. Concentration detector; 250. First pressure detector; 260. Second pressure detector;

[0028] 300. Hopper device; 310. Pneumatic disc device; 320. Pneumatic striking device; 330. Air inlet; 340. Seventh shut-off valve; 350. Eighth shut-off valve; 360. Slide valve; 370. Rotary star valve; 380. Hopper discharge port.

[0029] 500. Backflush device; 510. Backflush nozzle; 520. Backflush air manifold; 530. Sixth shut-off valve; 540. Third manual ball valve;

[0030] 600. Dust removal tower. Detailed Implementation

[0031] The specific embodiments of this application will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this application.

[0032] The air supply system for the silo of this application is described below with reference to the accompanying drawings.

[0033] like Figures 1 to 5As shown, this application provides a silo air supply system, wherein the silo air supply system includes:

[0034] The silo device 300 is used to hold the raw materials to be reacted.

[0035] The gas supply device 100 includes a reaction gas source pipeline 110, an inert gas source pipeline 120, and a first silo pipeline 130. The first ends of the reaction gas source pipeline 110 and the inert gas source pipeline 120 are respectively connected to the reaction gas source and the inert gas source, and the second ends away from the corresponding gas sources are connected to form a first junction end. The first silo pipeline 130 connects the silo device 300 and the first junction end. The reaction gas source pipeline 110 is provided with a first on / off valve 111, a first exhaust valve 112 and a third on / off valve 113 in sequence along the gas injection direction. The inert gas source pipeline 120 is provided with a second on / off valve 121.

[0036] Exhaust device 200, which is installed on the hopper device 300;

[0037] The control device is used to control the opening and closing of the on / off valve and the exhaust valve respectively.

[0038] When using the aforementioned silo gas supply system, during the production of oxidized products, the control device controls the first on / off valve 111 to open and the first exhaust valve 112 and the second on / off valve 121 to close, thereby opening the reaction gas source pipeline 110 and disconnecting the inert gas source pipeline 120. The reaction gas source injects reaction gas into the silo device 300 through the reaction gas source pipeline 110 and the first silo pipe pipeline 130, causing the raw materials to be reacted in the silo device 300 to undergo an aerobic reaction. During the production of anti-oxidation products, the control device first controls the first on / off valve 111 to close and the first exhaust valve 112, the second on / off valve 121, and the third on / off valve 113 to open, thereby disconnecting the reaction gas source pipeline 110 and opening the inert gas source pipeline 120. The inert gas source injects inert gas into the silo device 300 through the inert gas source pipeline 120 and the first silo pipe pipeline 130, thereby discharging the reaction gas from the reaction gas source pipeline 110. After the reaction gas is completely discharged... The control device closes the third shut-off valve 113, ensuring that only inert gas exists in the silo device 300 and the pipelines connected to it. The reactants then undergo an anaerobic reaction. During this subsequent anaerobic reaction, the closure of the first shut-off valve 111 and the third shut-off valve 113 prevents a small amount of high-pressure reaction gas overflowing the first shut-off valve 111 from entering the silo device 300, thus improving the stability of the atmosphere within the silo device 300. Compared to conventional gas supply systems that only replace the gas in the silo, this system allows for the replacement of two gases within the pipelines and the silo device 300. This enables the production of different compounds within the silo device 300 according to actual production needs, effectively improving production efficiency. Furthermore, the entire process is automated by the control device, preventing operators from inhaling reaction or inert gases and ensuring their safety. Specifically, a first manual ball valve 114 is also provided between the third shut-off valve 113 and the first junction.

[0039] It should be noted that the terms "reaction gas source" and "inert gas source" are only used to illustrate the difference in the gases supplied, and do not limit the specific types of gases supplied. The reaction gas source can supply air or other gases, and the inert gas source can supply nitrogen or other gases. In a specific embodiment of this invention applied to the production of ternary precursors, the reaction gas source supplies air, and the inert gas source supplies nitrogen. When this invention is applied to embodiments of other compound production, the reaction gas source and inert gas source can supply the corresponding gases according to actual needs.

[0040] like Figure 2As shown in this embodiment of the invention, the inert gas source pipeline 120 is further provided with a second exhaust valve 122 and a fourth on / off valve 123. The second exhaust valve 122 and the fourth on / off valve 123 are sequentially arranged between the second on / off valve 121 and the first junction end along the gas injection direction. The second exhaust valve 122 and the fourth on / off valve 123 are used to discharge the gas in the inert gas pipeline when needed. It can be understood that the inert gas source pipeline 120 has the same structure as the reaction gas source pipeline 110. Therefore, the silo gas supply system can realize both the replacement of reaction gas with inert gas and the replacement of inert gas with reaction gas, making it more convenient to use. The replacement of inert gas with reaction gas can be referred to the above-described inert gas charging process, which will not be repeated here.

[0041] In this embodiment of the invention, the gas supply device 100 further includes a second silo pipe 140, which is used to introduce inert gas into the silo device 300. The first ends of the first silo pipe 130 and the second silo pipe 140 are respectively connected to the silo device 300, and the second ends are joined to form a second junction end. The first junction end is connected to the second junction end. The second silo pipe 140 is provided with a fifth on / off valve 141 that is communicatively connected to the control device. The second silo pipe 140 serves as the main route for inert gas to enter the silo device 300, improving the gas intake efficiency. By setting the fifth on / off valve 141, the flow and discharge of inert gas in the silo device 300 can be further flexibly controlled, improving the operability and practicality of the silo gas supply system.

[0042] Specifically, when inert gas is introduced, the control device opens the fifth on-off valve 141, allowing the inert gas to enter the silo device 300 via the first compartment pipe 130 and the second compartment pipe 140 respectively; when reaction gas is introduced, the control device closes the fifth on-off valve 141, allowing the reaction gas to enter the silo device 300 only via the first compartment pipe 130. Furthermore, a second manual ball valve 124 is also provided between the fourth on-off valve 123 and the first junction end.

[0043] like Figure 4As shown in this embodiment of the invention, the silo device 300 includes a silo body, an air disc device 310, and a pneumatic striking device 320. The silo body is used to hold the raw materials to be reacted. The air disc device 310 and the pneumatic striking device 320 are both located at the lower part of the silo body. The first end of the first silo pipe 130 is connected to the air disc device 310 and the pneumatic striking device 320 at the bottom of the silo device 300, respectively. The first end of the second silo pipe 140 is connected to the silo air inlet 330 at the upper part of the silo body. The air disc device 310 is used to effectively promote the flow of the raw materials to be reacted in the silo body by the flow of gas when inert gas or reactive gas is introduced, so as to promote the smooth flow of the reacted material out of the silo body. The pneumatic striking device 320 is used to strike the silo body when necessary to prevent the raw materials to be reacted from clumping or depositing in the silo body.

[0044] Specifically, the first hopper pipeline 130 branches off to connect the pneumatic disc device 310 and the pneumatic striking device 320. Each branch is equipped with a seventh on / off valve 340 or an eighth on / off valve 350. The control device is communicatively connected to the seventh on / off valve 340 and the eighth on / off valve 350. The operation of the pneumatic disc device 310 is controlled by controlling the opening and closing of the seventh on / off valve 340, and the operation of the pneumatic striking device 320 is controlled by controlling the opening and closing of the eighth on / off valve 350. Furthermore, the bottom of the hopper device 300 is provided with a slide gate valve 360, a star-shaped discharge valve 370, and a hopper discharge port 380 from top to bottom.

[0045] like Figure 2 As shown in this embodiment of the invention, a flow detector 142 is also provided on the second silo pipeline 140, and the flow detector 142 is located between the fifth on / off valve 141 and the silo device 300. The flow detector 142 is used to monitor the gas flow rate entering the silo body in real time to ensure that the supply of inert gas is stable and meets the preset requirements. Specifically, a manual regulating valve 143 is also provided between the fifth on / off valve 141 and the flow detector 142.

[0046] like Figure 3 As shown in this embodiment of the invention, the exhaust device 200 includes a filter chamber 210 and a filter 2111. The filter chamber 210 is located at the top of the silo and has an inlet end and an exhaust end. The inlet end of the filter chamber 210 is connected to the silo device 300. A gas channel is formed between the inlet end and the exhaust end of the filter chamber 210. The filter 2111 is placed in the gas channel and is used to filter the gas passing through the gas channel. The filter 2111 can effectively filter out impurities in the gas and improve the cleanliness of the gas.

[0047] like Figure 3As shown in this embodiment of the invention, the exhaust device 200 further includes a fan 220, a proportional valve 230, and a concentration detector 240. The air inlet of the fan 220 is connected to the exhaust end of the filter chamber 210. The concentration detector 240 is located at the air inlet of the fan 220 and is used to detect the concentration of the reaction gas. This prevents dust from affecting the working effect of the fan 220 and the concentration detector 240 and thus the sensitivity of the concentration detection. The proportional valve 230 is located at the air outlet of the fan 220. The control device is communicatively connected to both the proportional valve 230 and the concentration detector 240 and is used to control the opening degree of the proportional valve 230 according to the concentration of the reaction gas. The fan 220 is used to accelerate the gas discharge from the silo device 300. The control device controls the opening degree of the proportional valve 230 according to the measurement result of the concentration detector 240, thereby maintaining the stability of the environment inside the detection device and minimizing nitrogen consumption.

[0048] Specifically, taking the production of ternary precursors as an example, the concentration detector 240 is an oxygen concentration detector 240, the reaction gas is air, and the inert gas is nitrogen. When nitrogen is introduced, the blower 220 stops working, and the valve opening of the proportional valve 230 is automatically adjusted according to the feedback value of the oxygen concentration detector 240. When the oxygen concentration drops to the set target value, the valve closes, and the nitrogen atmosphere in the chamber is stable. When air is introduced, the blower 220 works to discharge the remaining nitrogen after the reaction, ensuring the efficiency of the oxidation reaction.

[0049] like Figure 3 As shown in this embodiment of the invention, the filter chamber 210 has a first receiving cavity 211 and a second receiving cavity 212 sequentially formed along the direction from the air inlet to the exhaust end. The filter 2111 is placed in the first receiving cavity 211. The hopper air supply system also includes a back-blowing device 500, and the back-blowing nozzle 510 of the back-blowing device 500 is placed in the second receiving cavity 212. Through the back-blowing device 500, the dust attached to the filter 2111 can be blown into the hopper device 300, realizing the self-cleaning of the filter 2111 and improving the service life of the filter 2111. Specifically, the filter chamber 210 is provided with multiple filters 2111, and the back-blowing device 500 is provided with multiple back-blowing nozzles 510 corresponding to the multiple filters 2111.

[0050] like Figure 3 As shown in this embodiment of the invention, the exhaust device 200 further includes a first pressure detector 250. The first pressure detector 250 has a first detection port and a second detection port. The first detection port is connected to the first receiving cavity 211, and the second detection port is connected to the second receiving cavity 212, for detecting the pressure difference between the first receiving cavity 211 and the second receiving cavity 212. When the feedback value of the first pressure detector 250 exceeds a preset value, it indicates that the filter 2111 is clogged, and the filter 2111 needs to be cleaned or replaced immediately to ensure the safety of the silo air supply system.

[0051] Specifically, the normal pressure drop range of the first accommodating chamber 211 and the second accommodating chamber 212 is 2-3 kPa. When the pressure suddenly increases, the control device will issue an alarm, and the filter element will be manually checked for blockage or damage. The manual judgment and handling will then be carried out.

[0052] like Figure 3 As shown in this embodiment of the invention, the exhaust device 200 further includes a second pressure detector 260, which is used to detect the pressure value of the second accommodating cavity 212. Through the second pressure detector 260, it is possible to determine whether the pressure of the silo device 300 is safe, and to provide feedback to adjust the flow rate of the gas supply, ensuring that the pressure inside the silo device 300 is maintained within a set range.

[0053] like Figure 3 As shown in this embodiment of the invention, the backflush device 500 further includes a backflush air manifold 520 and a sixth shut-off valve 530. The outlet of the backflush air manifold 520 is sequentially connected to the sixth shut-off valve 530 and the backflush nozzle 510, while the inlet of the backflush air manifold 520 is connected to the first compartment pipe. The function of the backflush air manifold 520 is to store compressed gas, providing a sufficient volume of gas for the backflush nozzle 510 at one time, ensuring the cleaning efficiency of the filter 2111. The sixth shut-off valve 530 is communicatively connected to the control device, which controls the operation of the sixth shut-off valve 530.

[0054] Specifically, the backflush device 500 includes multiple backflush nozzles 510, each corresponding to a sixth shut-off valve 530. The control device can independently control each sixth shut-off valve 530, thereby accurately backflush cleaning each filter 2111. Furthermore, the backflush air manifold 520 is also provided with an exhaust port, and a third manual ball valve 540 is provided at the exhaust port.

[0055] like Figure 1 As shown in the embodiment of this utility model, the air supply system for the silo also includes a dust removal tower 600, which is connected to the air outlet of the fan 220 via a pipeline and is used to collect dust particles discharged by the fan 220.

[0056] In the description of this application, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0057] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between components; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0058] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0059] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A silo gas supply system characterized by, The silo gas supply system comprises: A silo device (300) for containing raw materials to be reacted; A gas supply device (100) comprising a reaction gas source pipeline (110), an inert gas source pipeline (120), and a first silo connecting pipeline (130), the first ends of the reaction gas source pipeline (110) and the inert gas source pipeline (120) are respectively connected to the reaction gas source and the inert gas source one by one, and the second ends away from the corresponding gas source are connected to form a first connection end, the first silo connecting pipeline (130) connects the silo device (300) and the first connection end, the reaction gas source pipeline (110) is sequentially provided with a first on-off valve (111), a first exhaust valve (112), and a third on-off valve (113) in the gas injection direction, and the inert gas source pipeline (120) is provided with a second on-off valve (121); An exhaust device (200) provided on the silo device (300); A control device for controlling the opening and closing of the on-off valves and the exhaust valves.

2. The silo gas supply system of claim 1, wherein, The inert gas source pipeline (120) is further provided with a second exhaust valve (122) and a fourth on-off valve (123), which are sequentially arranged between the second on-off valve (121) and the first connection end in the gas injection direction.

3. The silo gas supply system of claim 1, wherein, The gas supply device (100) further comprises a second silo connecting pipeline (140) for introducing inert gas into the silo device (300), the first ends of the first silo connecting pipeline (130) and the second silo connecting pipeline (140) are connected to the silo device (300), and the second ends are connected to form a second connection end, the first connection end is connected to the second connection end, and the second silo connecting pipeline (140) is provided with a fifth on-off valve (141) in communication with the control device.

4. The silo gas supply system of claim 3, wherein, The silo device (300) comprises a silo body, a gas disc device (310), and a pneumatic knocking device (320), the silo body is used for containing raw materials to be reacted, the gas disc device (310) and the pneumatic knocking device (320) are arranged at the lower part of the silo body, the first ends of the first silo connecting pipeline (130) are connected to the gas disc device (310) and the pneumatic knocking device (320) at the bottom of the silo device (300), respectively, and the first end of the second silo connecting pipeline (140) is connected to the silo gas inlet (330) at the upper part of the silo body; And / or, the second silo connecting pipeline (140) is further provided with a flow detector (142), and the flow detector (142) is located between the fifth on-off valve (141) and the silo device (300).

5. The silo gas supply system of claim 3, wherein, The exhaust device (200) comprises a filter bin (210) and a filter (2111), the filter bin (210) is arranged at the top of the bin and has an air inlet end and an air outlet end, the air inlet end of the filter bin (210) is communicated with the bin device (300), a gas passage is formed between the air inlet end and the air outlet end of the filter bin (210), and the filter (2111) is arranged in the gas passage and used for filtering the gas passing through the gas passage.

6. The silo gas supply system of claim 5, wherein, The exhaust device (200) further comprises a fan (220), a proportional valve (230) and a concentration detector (240), the air inlet of the fan (220) is communicated with the air outlet end of the filter bin (210), the concentration detector (240) is arranged at the air inlet of the fan (220) and used for detecting the concentration of the reaction gas, the proportional valve (230) is arranged at the air outlet of the fan (220), and the control device is respectively communicated with the proportional valve (230) and the concentration detector (240) and is used for controlling the opening degree of the proportional valve (230) according to the concentration of the reaction gas.

7. The bin gas supply system of claim 5, wherein, The filter bin (210) is sequentially formed with a first accommodating cavity (211) and a second accommodating cavity (212) in the direction from the air inlet end to the air outlet end, the filter (2111) is arranged in the first accommodating cavity (211), and the bin gas supply system further comprises a back flushing device (500), a back flushing nozzle (510) of the back flushing device (500) is arranged in the second accommodating cavity (212).

8. The silo gas supply system of claim 7, wherein, The exhaust device (200) further comprises a first pressure detector (250), the first pressure detector (250) has a first detection port and a second detection port, the first detection port is communicated with the first accommodating cavity (211), and the second detection port is communicated with the second accommodating cavity (212) and is used for detecting the pressure difference between the first accommodating cavity (211) and the second accommodating cavity (212); And / or, the exhaust device (200) further comprises a second pressure detector (260), the second pressure detector (260) is used for detecting the pressure value of the second accommodating cavity (212).

9. The silo gas supply system of claim 7, wherein, The back flushing device (500) further comprises a back flushing gas bag (520) and a sixth on-off valve (530), the outlet of the back flushing gas bag (520) is sequentially connected with the sixth on-off valve (530) and the back flushing nozzle (510), and the inlet of the back flushing gas bag (520) is connected with the first bin connecting pipe.

10. The silo gas supply system of claim 6, wherein, The bin gas supply system further comprises a dust removal tower (600), the dust removal tower (600) is communicated with the air outlet of the fan (220) through a pipeline and is used for collecting the dust particles discharged by the fan (220).

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