Steel silo with automatic weighing system

Abstract

The utility model discloses a steel silo with an automatic weighing system, and relates to the technical field of storage and fresh keeping. The steel silo comprises a steel silo body, a sealing cover and a ventilation frame, the sealing cover is fixedly clamped to the top of the steel silo body, a lifting air cylinder is clamped to the top of the sealing cover, a lifting telescopic pipe is slidably clamped to the bottom of the lifting air cylinder, a first supporting plate is inserted into the bottom of the peripheral face of the lifting telescopic pipe in a penetrating mode, and a second supporting plate is clamped to the bottom of the lifting telescopic pipe. A ventilation frame is clamped and fixed to the center of the top of the sealing cover, and a ventilation telescopic pipe is slidably clamped to the bottom of the ventilation frame. Through the arrangement of the steel silo main body, the sealing cover and the ventilation frame, the problems that the steel silo is difficult to weigh all stored materials for a long time, the accuracy of weighing flowing materials is low, the materials are possibly adhered to the inner wall of the steel silo to influence the judgment on residual materials, and the like are solved. And after long-time storage, the materials stacked at the bottom of the steel silo are difficult to dry through vacuumizing.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the storage and fresh-keeping technical field, especially a steel plate storehouse with automatic weighing system. BACKGROUND

[0002] Steel plate storehouse, it is mainly used to store cement, fly ash, slag powder, clinker, grain and other powder, granular material, also can be used for the storage of liquid such as sulfuric acid, it has the advantages of large storage capacity, short construction time, less investment, safe and reliable, energy saving and environmental protection, long service life, good air tightness, high strength, light weight, but it still has the following disadvantages in practical use:

[0003] The utility model discloses a steel plate storehouse for seed fresh -keeping is provided with steel plate storehouse air port on the outside of seed storage steel plate storehouse, is provided with planetary gear mechanism, steel plate storehouse first stirring mechanism and steel plate storehouse second stirring mechanism in the inside of seed storage steel plate storehouse, steel plate storehouse first stirring mechanism is connected with seed storage steel plate storehouse movably through planetary gear mechanism, since the material quantity required to store in steel plate storehouse is larger, for the convenience of the management of a large number of materials, it is usually necessary to set up a weighing system to weigh the material quantity, but since the storage capacity is larger, the weighing system is directly subjected to greater pressure for a long time and is prone to decrease in accuracy, therefore, the steel plate storehouse usually sets up a weighing structure at the import and export of raw materials, but this leads to a relatively complex weighing structure, and errors are prone to occur when weighing the materials being imported and exported, and the weighing accuracy is relatively low.

[0004] When the steel plate storehouse discharges materials, part of the materials can adhere to the inner wall of the steel plate storehouse, which may affect the judgment of the total quantity of the materials in the steel plate storehouse for a long time, and part of the materials need to be stored under a certain degree of dryness, so the materials are usually stored in the steel plate storehouse after being dried, although the steel plate storehouse has good sealing performance, but it is difficult to avoid the entry of external air into the steel plate storehouse through tiny gaps for a long time, and it is difficult to ensure that all the materials are at an appropriate degree of dryness by regularly vacuumizing the steel plate storehouse, especially the materials accumulated at the bottom of the steel plate storehouse, which may contaminate the materials. UTILITY MODEL CONTENTS

[0005] The utility model discloses a steel plate storehouse with automatic weighing system, through steel plate storehouse main part, sealing cover and ventilating frame, solved steel plate storehouse when actual use, it is difficult to directly all the materials in the steel plate storehouse for a long time weighing, the material is weighed at the import and export, and the weighing accuracy is low, when discharging materials, part of the materials can adhere to the inner wall of the steel plate storehouse, which affects the judgment of the total quantity of the materials in the steel plate storehouse, and the moisture in the external air inevitably enters the steel plate storehouse through the gap and contacts the materials during the storage process, and the materials accumulated at the bottom of the steel plate storehouse are difficult to dry by vacuumizing.

[0006] To solve the above technical problems, the utility model is through the following technical schemes realizes:

[0007] The utility model discloses a steel plate storehouse with automatic weighing system, including steel plate storehouse main part, sealing cover and ventilating frame, the outer peripheral surface of steel plate storehouse main part is connected and is fixed with the heat preservation frame, be provided with spiral feed pipe in the heat preservation frame, the top of sealing cover is connected with lift cylinder, the bottom sliding joint of lift cylinder has lift telescopic pipe, the bottom of lift telescopic pipe outer peripheral surface is inserted and is connected with first support plate, the bottom of lift telescopic pipe is connected with second support plate, the top central of sealing cover is connected and is fixed with ventilating frame, the outer peripheral surface of ventilating frame is inserted and is connected with high pressure gas pump, the bottom sliding joint of ventilating frame has ventilation telescopic pipe,

[0008] Through the heat preservation frame can be heat preservation to the steel plate storehouse main part, avoid the outside environment temperature to the storage temperature cause bigger influence, material can pass through spiral feed pipe and go in and out material, and through spiral feed pipe can the speed of material's in and out delay, facilitate when the material is weighed to the total amount of the stored material, through lift cylinder can drive second support plate and first support plate and move up and down, when need weigh the weight of the material in steel plate storehouse main part, control second support plate and go up make first support plate and second support plate contact through the shock absorbing support block, can weigh the weight of material, and when not need to weigh, only need to control first support plate and second support plate reset, avoid pressure sensing assembly long time stress, guarantee the precision of weighing, ventilation telescopic pipe is provided with reset spring, when the material is fed, through high pressure gas pump and exhaust in ventilating frame, can make material enter steel plate storehouse main part under the action of air pressure through spiral feed pipe, and when store certain time, through high pressure gas pump and pump in filtered air in ventilation telescopic pipe, can make ventilation telescopic pipe stretch and insert in material, make the airflow when entering steel plate storehouse main part can first and the material at the bottom contact, carry out air cooling drying to the material, avoid the bottom material to be damped, guarantee the storage efficiency of material in steel plate storehouse main part.

[0009] Further, the first connecting pipe is welded through the top of the spiral feed pipe, the second connecting pipe is welded through the bottom of the spiral feed pipe, and the second connecting pipe is inserted and connected to the bottom of the outer peripheral surface of the heat preservation frame.

[0010] Material can pass through spiral feed pipe and go in and out material, and through spiral feed pipe can the speed of material's in and out delay, facilitate when the material is weighed to the total amount of the stored material, through the heat preservation frame can be heat preservation to the steel plate storehouse main part, avoid the outside environment temperature to the storage temperature cause bigger influence.

[0011] Further, the steel plate bin body inner wall is welded and fixed with a limiting frame, the steel plate bin body outer peripheral surface is clamped and fixed with a heating plate, and the first connecting pipe is clamped and penetrated on the top of the steel plate bin body outer peripheral surface.

[0012] The first support plate is limited by the limiting frame, and when the material is not weighed, the second support plate is moved to the bottom of the steel plate bin body, so that the limiting frame supports the first support plate and the material, avoids long-time stress of the pressure sensing assembly, ensures the accuracy of weighing, reduces maintenance costs, the steel plate bin body is heated by the heating plate, the material is further heated, changes of the material at too low temperature are avoided, and the stability of the material storage is ensured.

[0013] Further, the lifting telescopic pipe top is penetrated and inserted in the sealing cover top, the sealing cover top is welded with a first exhaust pipe, and the first support plate is located on the top of the limiting frame.

[0014] The lifting cylinder drives the telescopic pipe to extend and retract, further drives the second support plate and the first support plate to move up and down, the material adhered to the inner wall of the steel plate bin body is scraped off, and the upward movement of the first support plate enables the material to be discharged through the spiral material conveying pipe under the action of gravity, so that the structure is simple and the operation is convenient.

[0015] Further, the second support plate top central part is clamped and fixed with a pressure sensing assembly, the pressure sensing assembly top is clamped and fixed with a shock absorption support block, the second support plate is penetrated and inserted in the limiting frame bottom, and the shock absorption support block is attached to the first support plate bottom.

[0016] When the second support plate supports the first support plate and the material through the shock absorption support block, the material is weighed by the pressure sensing assembly, and the total amount of the material stored in the steel plate bin body can be weighed at any time, the structure is simple and convenient to use, and when the material is fed and weighed at the same time, the influence of vibration on the pressure sensing assembly is reduced by the shock absorption support block.

[0017] Further, the ventilation telescopic pipe bottom is penetrated and clamped with an air pipe, the air pipe outer peripheral surface is penetrated and clamped with an air pressure valve, the air pipe bottom is clamped and fixed with a plug cone, and the ventilation telescopic pipe is penetrated and inserted in the sealing cover top.

[0018] When feeding, the steel plate bin body is pumped by the high-pressure air pump, so that the steel plate bin body is in low pressure, and the material is further stored in the steel plate bin body under the action of air pressure, and after the material storage is completed, the steel plate bin body is further pumped to be in relative vacuum, so that the moisture in the air is avoided to pollute the material.

[0019] Further, the outer periphery of the high-pressure air pump is penetrated by a third connecting pipe, the outer periphery of the third connecting pipe is penetrated by a second exhaust pipe and a solenoid valve, the second exhaust pipe is located between the high-pressure air pump and the solenoid valve, the other end of the third connecting pipe is penetrated by an air filter, and the outer periphery of the air filter is penetrated by an air extraction pipe.

[0020] After the material is stored for a certain period of time, the high-pressure air pump extracts air from the outside through the air extraction pipe, so that the outside air is filtered through the air filter and enters the ventilation rack and the ventilation telescopic pipe, the ventilation telescopic pipe is stretched under the action of air pressure, the plug-in cone is further inserted into the material, and the airflow can first contact the bottom material when entering the steel plate warehouse body, and then the airflow is used for air cooling and drying of all materials, so that the bottom material is prevented from being damp, the storage efficiency of the material in the steel plate warehouse body is ensured, after drying for a certain period of time, the high-pressure air pump is closed, the ventilation telescopic pipe is reset, the high-pressure air pump is controlled to extract air from the ventilation rack, and the steel plate warehouse body is in a vacuum state again.

[0021] The utility model has the advantages of the following beneficial effects:

[0022] The utility model discloses a steel plate warehouse body and sealing cover are set up, the material amount that the steel plate warehouse needs stores is relatively large, for being convenient for the management of a large amount of material, usually needs to set up the weighing system to weigh the material amount, but because the amount of storage is relatively large, directly weighing all the material in the steel plate warehouse, the weighing system is under the relatively large pressure for a long time and is easy to lead to the decrease of accuracy, therefore, the steel plate warehouse usually sets up the weighing structure at the import and export of raw materials, but leads to the weighing structure to be relatively complex, and the weighing of the material that is going in and going out is easy to appear the error, and the weighing accuracy is lower, when the material in the steel plate warehouse needs to be weighed, control lift cylinder drives lift telescopic pipe to contract, and the second support plate supports the material and the first support plate, further can make pressure sensing assembly weigh the material, when the material does not need to be weighed, make the second support plate move to the bottom in the steel plate warehouse body, and the limiting frame supports the first support plate and the material, avoid the long -time stress of pressure sensing assembly, guarantee the precision of weighing, reduce the maintenance expenditure.

[0023] This invention solves the problem of material adhering to the inner wall of a steel silo during discharge by setting up a sealing cover and a ventilation frame. This can affect the operator's judgment of the material quantity in the silo over time. Some materials require a certain degree of dryness for storage, so they are usually dried before being stored in the silo. Although steel silos have good sealing properties, long-term storage inevitably leads to outside air entering through tiny gaps, potentially contaminating the materials. After a certain storage period, a high-pressure air pump draws air from the outside through an extraction pipe. This outside air is filtered through an air filter and enters the ventilation frame and ventilation telescopic pipe. The ventilation telescopic pipe is stretched under air pressure, further inserting the cone into the material. This allows the airflow to contact the bottom material first, and then the upward airflow dries all the material, preventing moisture absorption at the bottom. During discharge, a lifting cylinder moves the first support plate upward, scraping off the material from the inner wall of the steel silo. Attached Figure Description

[0024] Figure 1 This is a structural rendering of the present invention;

[0025] Figure 2 This is a schematic diagram of the structure of this utility model;

[0026] Figure 3 This is a structural diagram of the main body of the steel silo of this utility model;

[0027] Figure 4 This is a structural diagram of the sealing cap of this utility model;

[0028] Figure 5 This is a structural diagram of the ventilation rack of this utility model.

[0029] Figure label:

[0030] 1. Steel silo body; 101. Insulation rack; 102. Spiral feed pipe; 103. First connecting pipe; 104. Second connecting pipe; 105. Heating plate; 106. Limiting frame; 2. Sealing cover; 201. Lifting cylinder; 202. First support plate; 203. Second support plate; 204. Lifting telescopic pipe; 205. First exhaust pipe; 206. Pressure sensing component; 207. Shock-absorbing support block; 3. Ventilation rack; 301. High-pressure air pump; 302. Ventilation telescopic pipe; 303. Ventilation pipe; 304. Air pressure valve; 305. Insert cone; 306. Third connecting pipe; 307. Second exhaust pipe; 308. Solenoid valve; 309. Air filter element; 310. Suction pipe. Detailed Implementation

[0031] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0032] Please see Figures 1-5 As shown, this utility model is a steel silo with an automatic weighing system, including a steel silo body 1, a sealing cover 2, and a ventilation frame 3. An insulation frame 101 is snapped and fixed to the outer periphery of the steel silo body 1. A spiral feed pipe 102 is provided inside the insulation frame 101. The sealing cover 2 is snapped and fixed to the top of the steel silo body 1. A lifting cylinder 201 is snapped and fixed to the top of the sealing cover 2. A lifting telescopic pipe 204 is slidably snapped and fixed to the bottom of the lifting cylinder 201. A first support plate 202 is inserted through the bottom of the outer periphery of the lifting telescopic pipe 204. A second support plate 203 is snapped and fixed to the bottom of the lifting telescopic pipe 204. A ventilation frame 3 is snapped and fixed to the center of the top of the sealing cover 2. A high-pressure air pump 301 is snapped and fixed through the outer periphery of the ventilation frame 3. A ventilation telescopic pipe 302 is slidably snapped and fixed to the bottom of the ventilation frame 3.

[0033] During feeding, the high-pressure air pump 301 is controlled to evacuate air from the main body 1 of the steel silo, creating a negative pressure state inside the silo. This allows the material to enter the main body 1 of the steel silo through the spiral feed pipe 102 for storage. When further storage is needed, the high-pressure air pump 301 is controlled to evacuate air from the main body 1 of the steel silo again, creating a relative vacuum. After the material has been stored for a certain period, filtered air is pumped into the ventilation expansion pipe 302 by the high-pressure air pump 301. This causes the ventilation expansion pipe 302 to extend and insert into the material, allowing the airflow to first contact the material at the bottom of the silo before flowing upwards to cool and dry all the material. To prevent the bottom material from getting damp, when it is necessary to weigh the material inside the steel silo body 1, the lifting cylinder 201 is controlled to drive the lifting telescopic tube 204 to retract, causing the second support plate 203 to move upward, which in turn drives the first support plate 202 to move upward. The material is then weighed through the pressure sensing component 206. When weighing is not required, the first support plate 202 and the second support plate 203 are simply controlled to reset, preventing the pressure sensing component 206 from being subjected to force for a long time. When discharging, the first support plate 202 and the second support plate 203 are controlled to move upward again, causing the material to move to the top inside the steel silo body 1 and be discharged through the spiral feed pipe 102 under the action of gravity.

[0034] Among them, such as Figures 1-3 As shown, a first connecting pipe 103 is welded through the top of the spiral feed pipe 102, and a second connecting pipe 104 is welded through the bottom of the spiral feed pipe 102. The second connecting pipe 104 is inserted and snapped into the bottom of the outer periphery of the insulation rack 101. A limit frame 106 is welded and fixed to the inner wall of the steel silo body 1. A heating plate 105 is snapped and fixed to the outer periphery of the steel silo body 1. The first connecting pipe 103 is inserted and snapped into the top of the outer periphery of the steel silo body 1.

[0035] When weighing of materials is not required, the lifting cylinder 201 moves the second support plate 203 downward, and the first support plate 202 moves downward synchronously under the pressure of the materials until the first support plate 202 is attached to the top of the limiting frame 106. The limiting frame 106 supports the first support plate 202 and the materials, preventing the pressure sensing component 206 from being stressed for a long time. The materials are fed and discharged through the spiral feed pipe 102, and the spiral feed pipe 102 slows down the feeding and discharging speed of the materials, making it easier to weigh the total amount of stored materials when feeding. When the ambient temperature is too low, the heating plate 105 heats the steel silo body 1, further heating the materials to bring them to a suitable temperature, and the insulation frame 101 insulates the interior of the steel silo body 1.

[0036] Among them, such as Figure 1 , 2 As shown in Figure 4, the top of the lifting telescopic tube 204 is inserted through and connected to the top of the sealing cover 2. The top of the sealing cover 2 is welded through and connected to the first exhaust pipe 205. The first support plate 202 is located at the top of the limit frame 106. The pressure sensing component 206 is snapped and fixed at the center of the top of the second support plate 203. The shock-absorbing support block 207 is snapped and fixed at the top of the pressure sensing component 206. The second support plate 203 is inserted through and connected to the bottom of the limit frame 106. The shock-absorbing support block 207 is attached to the bottom of the first support plate 202.

[0037] When materials need to be weighed, the lifting cylinder 201 drives the lifting telescopic tube 204 to stretch, which in turn drives the second support plate 203 to move upward. After the shock-absorbing support block 207 is attached to the bottom of the first support plate 202, the first support plate 202 is moved upward, and the material is weighed through the pressure sensing component 206. At the same time, the material attached to the inner wall of the steel silo body 1 can be scraped off.

[0038] Among them, such as Figure 1 , 2 As shown in Figure 5, a ventilation pipe 303 is inserted and snapped through the bottom of the ventilation telescopic pipe 302. A pressure valve 304 is inserted and snapped through the outer circumference of the ventilation pipe 303. An insert cone 305 is fixed and snapped through the bottom of the ventilation pipe 303. The ventilation telescopic pipe 302 is inserted and snapped through the top of the sealing cover 2. A third connecting pipe 306 is inserted and snapped through the outer circumference of the high-pressure air pump 301. The outer circumference of the third connecting pipe 306 is inserted and snapped through the second exhaust pipe 307 and the solenoid valve 308. The second exhaust pipe 307 is located between the high-pressure air pump 301 and the solenoid valve 308. An air filter element 309 is inserted and snapped through the other end of the third connecting pipe 306 relative to the high-pressure air pump 301. An air extraction pipe 310 is inserted and snapped through the outer circumference of the air filter element 309.

[0039] During feeding, the solenoid valve 308 is closed and the second exhaust pipe 307 is opened. The high-pressure air pump 301 draws air from the steel silo body 1, creating a low-pressure environment inside the silo body 1. This allows the material to enter the silo body 1 for storage under air pressure. After feeding is complete, further evacuation creates a relative vacuum inside the silo body 1. After a certain storage time, the first exhaust pipe 205 and the solenoid valve 308 are opened, and the second exhaust pipe 307 is closed. The high-pressure air pump 301 draws air from the outside through the extraction pipe 310, allowing the outside air to pass through the air filter element 309 and enter the silo. The ventilation frame 3 and the ventilation telescopic pipe 302 are used to stretch the ventilation telescopic pipe 302 under air pressure, further allowing the insertion cone 305 to be inserted into the material. This allows the airflow to contact the material at the bottom when entering the main body 1 of the steel silo, and then use the upward airflow to air-cool and dry all the material, preventing the bottom material from getting damp. After drying for a certain period of time, the high-pressure air pump 301 is turned off, the ventilation telescopic pipe 302 is reset, the first exhaust pipe 205 and the solenoid valve 308 are closed at the same time, and the second exhaust pipe 307 is opened. The high-pressure air pump 301 is controlled to evacuate air from the ventilation frame 3, so that the main body 1 of the steel silo is in a vacuum state again.

[0040] The specific working principle of this utility model is as follows: During feeding, the high-pressure air pump 301 evacuates air from the steel silo body 1, creating a low-pressure environment inside the silo body 1. This allows the material to enter the steel silo body 1 through the spiral feed pipe 102 under air pressure. After feeding is complete, further evacuation creates a relative vacuum inside the steel silo body 1. When the ambient temperature is too low, the heating plate 105 heats the steel silo body 1, further heating the material to a suitable temperature. The insulation rack 101 then insulates the inside of the steel silo body 1. After the material has been stored for a certain period of time, the high-pressure air pump 301 is controlled to draw air from the outside through the air extraction pipe 310. The outside air is filtered through the air filter element 309 and enters the ventilation frame 3 and the ventilation expansion pipe 302. The ventilation expansion pipe 302 is stretched under the action of air pressure, further inserting the cone 305 into the material. When the airflow enters the main body 1 of the steel silo, it first contacts the material at the bottom, and then the upward airflow dries all the material by air cooling, preventing the material at the bottom from getting damp. After drying for a certain period of time, the high-pressure air pump 301 is turned off, the ventilation expansion pipe 302 is reset, and the high pressure is controlled. Air pump 301 evacuates air from the ventilation frame 3, creating a vacuum inside the steel silo body 1. When material weighing is required, lifting cylinder 201 extends lifting telescopic tube 204, further moving the second support plate 203 upward. This causes the shock-absorbing support block 207 to adhere to the bottom of the first support plate 202, moving the first support plate 202 upward. The pressure sensor component 206 then weighs the material and simultaneously scrapes off material adhering to the inner wall of the steel silo body 1. When weighing is not required, lifting cylinder 201 moves the second support plate 203... As the material moves downward, the first support plate 202 moves downward synchronously under the pressure of the material until it is in contact with the top of the limiting frame 106. The limiting frame 106 supports the first support plate 202 and the material, preventing the pressure sensing component 206 from being subjected to force for a long time. When it is necessary to discharge the material, the first support plate 202 is controlled to move upward until the material moves to the top of the steel silo body 1, so that the material is discharged through the spiral feed pipe 102 under the action of gravity. At the same time, the high-pressure air pump 301 pumps filtered air into the steel silo body 1 to increase the discharge speed of the material.

[0041] The above are merely preferred embodiments of the present utility model and do not limit the present utility model. Any modifications, equivalent substitutions, or improvements made to the technical solutions described in the foregoing embodiments, or to some of the technical features, shall fall within the protection scope of the present utility model.

Claims

1. A steel silo with an automatic weighing system, comprising a steel silo body (1), a sealing cover (2), and a ventilation frame (3), characterized in that: The outer periphery of the steel silo body (1) is fixed with an insulation frame (101), and a spiral feed pipe (102) is installed inside the insulation frame (101). The top of the steel silo body (1) is fixed with a sealing cover (2), and the top of the sealing cover (2) is fixed with a lifting cylinder (201). The bottom of the lifting cylinder (201) is slidably fixed with a lifting telescopic pipe (204). The bottom of the outer periphery of the lifting telescopic pipe (204) is inserted through a first support plate (202), and the bottom of the lifting telescopic pipe (204) is fixed with a second support plate (203). The center of the top of the sealing cover (2) is fixed with a ventilation frame (3), and the outer periphery of the ventilation frame (3) is inserted through a high-pressure air pump (301). The bottom of the ventilation frame (3) is slidably fixed with a ventilation telescopic pipe (302).

2. A steel silo with an automatic weighing system according to claim 1, characterized in that: The top of the spiral feed tube (102) is welded with a first connecting tube (103), and the bottom of the spiral feed tube (102) is welded with a second connecting tube (104). The second connecting tube (104) is snapped into the bottom of the outer periphery of the heat preservation rack (101).

3. A steel silo with an automatic weighing system according to claim 2, characterized in that: The inner wall of the steel silo body (1) is welded with a limit frame (106), and a heating plate (105) is snapped onto the outer periphery of the steel silo body (1). The first connecting pipe (103) is inserted and snapped onto the top of the outer periphery of the steel silo body (1).

4. A steel silo with an automatic weighing system according to claim 3, characterized in that: The top of the lifting telescopic tube (204) is inserted through the top of the sealing cover (2), and the top of the sealing cover (2) is welded through the first exhaust pipe (205). The first support plate (202) is located on the top of the limit frame (106).

5. A steel silo with an automatic weighing system according to claim 4, characterized in that: A pressure sensing component (206) is fixedly snapped to the top center of the second support plate (203), and a shock-absorbing support block (207) is fixedly snapped to the top of the pressure sensing component (206). The second support plate (203) is inserted through the bottom of the limiting frame (106), and the shock-absorbing support block (207) is attached to the bottom of the first support plate (202).

6. A steel silo with an automatic weighing system according to claim 1, characterized in that: The bottom of the ventilation telescopic tube (302) is connected to a vent pipe (303), the outer circumference of the vent pipe (303) is connected to a pressure valve (304), the bottom of the vent pipe (303) is fixed with an insert cone (305), and the ventilation telescopic tube (302) is inserted into the top of the sealing cover (2).

7. A steel silo with an automatic weighing system according to claim 1, characterized in that: The high-pressure air pump (301) has a third connecting pipe (306) that is inserted through and snapped onto its outer peripheral surface. The third connecting pipe (306) is inserted through and snapped onto the second exhaust pipe (307) and the solenoid valve (308). The second exhaust pipe (307) is located between the high-pressure air pump (301) and the solenoid valve (308). The third connecting pipe (306) has an air filter (309) inserted through and snapped onto its other end relative to the high-pressure air pump (301). The air filter (309) has an air extraction pipe (310) inserted through and snapped onto its outer peripheral surface.

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