Quick pressure relief silo capable of preventing uneven material distribution

Abstract

The utility model relates to the technical field of silo pressure relief, and provides a quick pressure relief silo capable of preventing uneven distribution of materials, the quick pressure relief silo comprises a silo body, an air exhaust assembly, a pressure relief pipe and a spoiler, the upper end of the silo body is provided with a plurality of uniformly distributed pressure relief holes and a feed port located in the middle; the pressure relief pipe is used for connecting the pressure relief hole and the air exhaust assembly; the spoiler is arranged in the bin body and divides the interior of the bin body into an upper cavity and a lower cavity, a plurality of flow guide blades are arranged on the spoiler at intervals, and a through hole located below the feeding port is formed in the spoiler. According to the rapid pressure relief silo capable of preventing uneven material distribution, gas in the silo body is extracted through the multiple pressure relief holes at the same time through the gas extraction assembly and the pressure relief pipe, so that pressure is rapidly relieved, the multiple pressure relief holes are evenly distributed, and it is avoided that light materials in the silo body are stacked at one position; and a spoiler and a guide vane are arranged for dividing and disturbing airflow, so that the influence of negative pressure on light materials in the lower cavity during air exhaust is reduced, and the problems that the pressure relief efficiency is low and the materials are distributed unevenly are solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of silo pressure relief, and particularly relates to a quick pressure relief silo for preventing uneven distribution of materials. BACKGROUND

[0002] In the electrolytic aluminum industry, when the dense-phase material loading system and the dilute-phase conveying system load materials from the center of the top of a silo to the inside of the silo, the pressure inside the silo will increase, and the pressure is generally relieved through a pressure relief hole on the silo and a pressure relief pipe in communication with the pressure relief hole. The pressure relief pipe is connected to a fan, and the fan provides negative pressure.

[0003] However, this pressure relief method has the problem of low pressure relief efficiency, and when the pressure is relieved, the lighter and finer materials in the falling materials are easily offset to the side close to the position of the pressure relief hole under the action of the negative pressure, resulting in uneven distribution of the materials. These lighter and finer materials will further decrease in size and weight after subsequent process treatment, and when a large amount of light powdery materials is conveyed in a short time through the dilute-phase conveying system, these powdery materials can only be boiled and not moved, resulting in the problems of difficult material feeding and blockage when the materials are fed, and uneven material feeding easily affects the subsequent electrolysis process and induces electrolytic cell effects. CONTENT OF THE UTILITY MODEL

[0004] The present application provides a quick pressure relief silo for preventing uneven distribution of materials, which can solve the problems of low pressure relief efficiency and uneven distribution of materials.

[0005] The present application provides a quick pressure relief silo for preventing uneven distribution of materials, which comprises a silo body, an air extraction assembly, a pressure relief pipe and a spoiler. The upper end of the silo body is provided with a plurality of uniformly distributed pressure relief holes and a material inlet in the middle. The pressure relief pipe is used to connect the pressure relief holes and the air extraction assembly. The spoiler is arranged in the silo body and divides the inside of the silo body into an upper chamber and a lower chamber. A plurality of guide vanes are arranged on the spoiler in intervals. A through hole is arranged on the spoiler below the material inlet.

[0006] According to the quick pressure relief silo for preventing uneven distribution of materials provided by the present application, the silo body is in a cylindrical shape, and a plurality of the pressure relief holes are arranged in a ring shape and uniformly spaced with the central axis of the silo body as the center line.

[0007] According to the quick pressure relief silo for preventing uneven distribution of materials provided by the present application, the distance between the pressure relief hole and the inner side wall of the silo body is smaller than the distance between the pressure relief hole and the central axis of the silo body.

[0008] According to the quick pressure relief silo for preventing uneven distribution of materials provided by the present application, the number of the pressure relief pipes is multiple, at least one of the pressure relief pipes is connected to one of the pressure relief holes, and the number of the pressure relief holes connected by the multiple pressure relief pipes is the same.

[0009] The quick pressure relief silo for preventing uneven distribution of materials provided by the present application has multiple pieces of the guide vane arranged in a ring shape or in a straight line direction.

[0010] The quick pressure relief silo for preventing uneven distribution of materials provided by the present application has an included angle between the extension direction of at least part of the guide vane and the vertical direction.

[0011] The quick pressure relief silo for preventing uneven distribution of materials provided by the present application further comprises multiple guide members corresponding to the multiple pressure relief holes, the guide member is arranged below the corresponding pressure relief hole, and the upper end of the guide member is a conical surface with a convex middle part.

[0012] The quick pressure relief silo for preventing uneven distribution of materials provided by the present application further comprises a control module, multiple flow detection members, and multiple flow valves, the flow detection member and the flow valve are arranged at any pressure relief hole, and the flow detection member and the flow valve are electrically connected to the control module.

[0013] The quick pressure relief silo for preventing uneven distribution of materials provided by the present application further comprises a gas pressure detection member arranged in the silo body, and the gas pressure detection member and the air extraction assembly are electrically connected to the control module.

[0014] The quick pressure relief silo for preventing uneven distribution of materials provided by the present application further comprises a dust collection assembly, and the pressure relief pipe and the air extraction assembly are connected to the dust collection assembly.

[0015] The quick pressure relief silo for preventing uneven distribution of materials provided by the present application extracts the gas in the silo body through the air extraction assembly and the pressure relief pipe at the same time, thereby achieving rapid pressure relief, the multiple pressure relief holes are uniformly distributed to avoid the accumulation of lighter materials in the silo body, the spoiler and the guide vane are arranged to divide and disturb the airflow, thereby reducing the influence of negative pressure on the lighter materials in the lower chamber during air extraction, and the problems of low pressure relief efficiency and uneven distribution of materials are effectively solved. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0017] Figure 1 The structure diagram of the quick pressure relief silo for preventing uneven distribution of materials provided in the present application is shown in the figure;

[0018] Figure 2 The structure diagram of the quick pressure relief silo for preventing uneven distribution of materials provided in the present application is shown in the figure;

[0019] Figure 3 The structure diagram of the quick pressure relief silo for preventing uneven distribution of materials provided in the present application is shown in the figure.

[0020] Reference signs:

[0021] 1, silo body; 11, pressure relief hole; 12, feeding port; 13, upper chamber; 14, lower chamber;

[0022] 2, air extraction assembly;

[0023] 3, pressure relief pipe; 31, main pipe; 32, branch pipe;

[0024] 4, spoiler; 41, guide vane; 42, through hole;

[0025] 5, flow guide; 6, connecting rod; 7, air pressure detection piece; 8, dust collection assembly. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical scheme and advantages of the present application more clear and understandable, the present application will be further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the present application, and are not used to limit the present application.

[0027] In the description of the embodiments of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0028] In addition, the terms "first", "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include one or more features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise explicitly specified and limited.

[0029] The quick pressure relief silo for preventing uneven distribution of materials provided in the present application will be described below in combination with Figures 1 to 3 the drawings.

[0030] Referring to Figures 1 to 3 The embodiment of the present application provides a quick pressure relief silo for preventing uneven distribution of materials, comprising a silo body 1, an air extraction assembly 2, a pressure relief pipe 3 and a spoiler 4, the upper end of the silo body 1 is provided with a plurality of evenly distributed pressure relief holes 11 and a feed inlet 12 located in the middle part; the pressure relief pipe 3 is used for connecting the pressure relief holes 11 and the air extraction assembly 2; the spoiler 4 is arranged in the silo body 1 and separates the inside of the silo body 1 into an upper chamber 13 and a lower chamber 14, a plurality of guide vanes 41 are arranged on the spoiler 4 at intervals, and the spoiler 4 is provided with a through hole 42 located below the feed inlet 12.

[0031] Specifically, the feed inlet 12 is used for connecting a dilute phase conveying system, the dilute phase conveying system is a conveying system for conveying materials mixed with gas, therefore, when the materials are conveyed into the silo body 1, the air pressure in the silo body 1 will gradually increase, and timely pressure relief is needed.

[0032] The air extraction assembly 2 is communicated with the pressure relief holes 11 through the pressure relief pipe 3, so that the air extraction assembly 2 can quickly extract the gas in the silo body 1 to achieve the purpose of pressure relief. The number of pressure relief holes 11 is multiple, which can accelerate the speed of pressure relief. During the pressure relief process, an air flow is formed inside the silo body 1 and points to the pressure relief holes 11, the air flow has a certain traction effect on the lighter materials in the falling materials, and in the embodiment, the plurality of pressure relief holes 11 are evenly distributed, so that the lighter materials falling from the feed inlet 12 are simultaneously attracted by the negative pressure at the plurality of pressure relief holes 11, so that the lighter materials are evenly diffused in different directions, and then the lighter materials are as evenly distributed as possible.

[0033] The through hole 42 on the spoiler 4 is used for the materials to pass through and fall, the spoiler 4 separates the inside of the silo body 1 into the upper chamber 13 and the lower chamber 14, the spoiler 4 is close to the inner top wall of the silo body 1, so that almost all the materials entering the silo body 1 will pass through the through hole 42 and enter the lower chamber 14, and the distance between the spoiler 4 and the silo body 1 is specifically less than 30 cm, so that the lower chamber 14 has enough volume to accommodate the materials,

[0034] During pressure relief, the gas in the upper chamber 13 is extracted first, and then the gas in the lower chamber 14 enters the upper chamber 13 through the gaps between the guide vanes 41 and the guide vanes 41 and the through hole 42, wherein the air flow in the lower chamber 14 is cut and scattered when it hits the guide vanes 41 and the spoiler 4, that is, the distribution and intensity of the air flow in the lower chamber 14 are affected by the existence of the spoiler 4 and the guide vanes 41, so that the influence of the negative pressure at the pressure relief holes 11 on the lighter materials in the lower chamber 14 is reduced, and the lighter materials are prevented from being too concentrated on one side close to the pressure relief holes 11.

[0035] The rapid pressure relief silo for preventing uneven distribution of materials in the embodiments of the present application can quickly relieve pressure by simultaneously extracting the gas in the silo body 1 through the multiple pressure relief holes 11 of the air extraction assembly 2 and the pressure relief pipe 3, and the multiple pressure relief holes 11 are uniformly distributed to avoid the accumulation of lighter materials in the silo body 1 at one place. The spoiler 4 and the guide vane 41 are arranged to divide and disturb the airflow, thereby reducing the influence of negative pressure on lighter materials in the lower chamber 14 during air extraction, and effectively solving the problems of low pressure relief efficiency and uneven distribution of materials.

[0036] In some embodiments, the air extraction assembly 2 is a gas pump, a fan or the like.

[0037] Please refer to Figures 1 to 2 In some embodiments, the silo body 1 is in a cylindrical shape, and the multiple pressure relief holes 11 are arranged in a ring shape with the central axis of the silo body 1 as the center line.

[0038] Specifically, the number of pressure relief holes 11 is four, the included angle between the connecting line of the adjacent two pressure relief holes 11 and the center line of the silo body 1 is 90°, and the spacing between the four pressure relief holes 11 and the feed port 12 is equal, so that the influence of the negative pressure at the four pressure relief holes 11 on the materials entering from the feed port 12 is basically the same.

[0039] Please refer to Figures 1 to 2 In some embodiments, the spacing between the pressure relief hole 11 and the inner side wall of the silo body 1 is less than the spacing between the pressure relief hole 11 and the central axis of the silo body 1.

[0040] Specifically, the materials entering the silo body 1 from the feed port 12 will fall on the middle area of the bottom wall of the silo body 1, and as the height of the materials increases, the materials will gradually form a conical shape, at which time the materials in the middle will slide to the surrounding under the action of gravity, thereby making the materials as evenly distributed as possible. However, the negative pressure at the pressure relief hole 11 will cause the surrounding lighter materials to converge towards the side of the pressure relief hole 11, and if the pressure relief hole 11 is close to the central axis of the silo body 1, the negative pressure will to some extent prevent the lighter materials from sliding from the middle to the inner edge of the silo body 1, resulting in a smaller amount of lighter materials distributed at the inner edge of the silo body 1. Therefore, the pressure relief hole 11 needs to be away from the central axis of the silo body 1, so that the lighter materials gradually spread from the middle of the silo body 1 to the inner edge of the silo body 1 under the action of gravity and negative pressure during pressure relief, thereby making the lighter materials as evenly distributed as possible.

[0041] Please refer to Figure 1 In some embodiments, the number of pressure relief pipes 3 is multiple, and the pressure relief pipe 3 is connected to at least one pressure relief hole 11, and the number of pressure relief holes 11 connected by the multiple pressure relief pipes 3 is the same.

[0042] Specifically, the pressure relief pipe 3 can be a double-pipe or a multi-pipe (three-pipe or more), preferably, the types of the plurality of pressure relief pipes 3 are the same to reduce the influence of the pipe type on the pressure relief efficiency. For example, when the number of pressure relief holes 11 is four, the pressure relief pipe 3 can be a three-pipe, the number of pressure relief pipes 3 is two, the pressure relief pipe 3 includes a main pipe 31 and two branch pipes 32 connected to the main pipe 31, and the total of four branch pipes 32 of the two pressure relief pipes 3 are in one-to-one correspondence with the four pressure relief holes 11.

[0043] Referring to Figures 2 to 3 In some embodiments, the plurality of guide vanes 41 can be spaced apart in a circular direction, spaced apart in a straight line direction, or partially spaced apart in a circular direction and partially spaced apart in a straight line direction. At least part of the guide vanes 41 have an angle between the extension direction and the vertical direction, and the guide vanes 41 arranged obliquely change the flow direction of the gas flow, which can diffuse and reverse the gas flow directed to the pressure relief hole 11, and reduce the influence on the lighter material. The widths of the gaps between the guide vanes 41 can be the same or different. In addition, the widths of the upper and lower ends of the gap can be the same or different. For example, by arranging the upper ends of the adjacent two guide vanes 41 close to each other, the width of the upper end of the gap between the two guide vanes 41 is smaller than the width of the lower end, so that when the gas in the lower chamber 14 passes through the gap into the upper chamber 13, the gas flow rate at the lower end of the gap is smaller than the gas flow rate at the upper end of the gap. The gas flow rate near the lower end of the gap is slow, and it is not easy to affect the lighter material falling in the lower chamber 14, thereby avoiding uneven distribution of the material.

[0044] Referring to Figures 1 to 2 In some embodiments, the rapid pressure relief silo for preventing uneven distribution of the material further includes a plurality of guide members 5, the plurality of guide members 5 correspond to the plurality of pressure relief holes 11 one-to-one, the guide member 5 is arranged below the corresponding pressure relief hole 11, and the upper end of the guide member 5 is a conical surface with the middle part protruding upwards.

[0045] Specifically, in the absence of the flow guide 5, when pressure relief, the air pressure in the upper chamber 13 near the pressure relief hole 11 will decrease rapidly, and the spoiler 4 is close to the pressure relief hole 11, under the action of negative pressure at the pressure relief hole 11, the pressure relief hole 11 will extract gas from the lower chamber 14 through the gap between the flow guide blade 41 below and the flow guide blade 41, causing the formation of an airflow in the lower chamber 14 pointing to the part of the spoiler 4 below the pressure relief hole 11, thereby easily affecting the lighter material in the lower chamber 14; secondly, after the pressure relief hole 11 mainly extracts air through the gap below, the gas flow from other parts of the upper chamber 13 to the pressure relief hole 11 is relatively small, that is, the gas flow rate in other parts of the upper chamber 13 is relatively slow, thereby causing the gas in the lower chamber 14 to flow directly to other parts of the upper chamber 13 to be relatively small, and the air flow through the part of the spoiler 4 below the pressure relief hole 11 will be much larger than the air flow through other parts of the spoiler 4, further increasing the likelihood of the formation of an airflow in the lower chamber 14 pointing to the part of the spoiler 4 below the pressure relief hole 11.

[0046] In the present embodiment, the flow guide 5 is connected to the inner wall of the bin body 1 through the connecting rod 6, and is arranged directly below the pressure relief hole 11, preventing the pressure relief hole 11 from directly extracting gas through the gap below. The upper end of the flow guide 5 is a conical surface, which can limit and guide the direction of the airflow, so that the airflow from each part of the upper chamber 13 is guided to the pressure relief hole 11 through the conical surface, thereby making the air pressure changes in each part of the upper chamber 13 as uniform as possible, further making the air flow through each part of the spoiler 4 differ relatively small, preventing the formation of directional airflow in the lower chamber 14, and avoiding uneven distribution of the material.

[0047] In some embodiments, the rapid pressure relief silo that prevents uneven distribution of the material further comprises a control module, a plurality of flow detection members, and a plurality of flow valves, and any pressure relief hole 11 is provided with a flow detection member and a flow valve, and the flow detection member and the flow valve are electrically connected to the control module.

[0048] Specifically, the flow detection member can be a flow sensor, which can detect the air flow through the pressure relief hole 11, and the control module can adjust the opening and closing degree of each flow valve according to the air flow through each pressure relief hole 11, so that the air flow through each pressure relief hole 11 is equal, avoiding the influence on the lighter material caused by the relatively large or small air flow of some pressure relief holes 11 relative to other pressure relief holes 11. The flow detection member and the flow valve can also be arranged on the branch pipe 32 corresponding to the pressure relief hole 11.

[0049] Please refer to Figures 1 to 2 In some embodiments, the rapid pressure relief silo that prevents uneven distribution of the material further comprises an air pressure detection member 7 arranged in the bin body 1, and the air pressure detection member 7 and the air extraction assembly 2 are electrically connected to the control module.

[0050] Specifically, the air pressure detection member 7 can be an air pressure sensor, which is configured to detect the air pressure value in the bin body 1. The control module can determine whether the bin body 1 needs to be depressurized according to the air pressure value. When the bin body 1 needs to be depressurized, the control module controls the air extraction assembly 2 to start air extraction. When the air pressure value is relatively large, the control module controls the air extraction assembly 2 to speed up the air extraction speed, and controls the opening degree of the flow valve to increase, so as to depressurize quickly. After the depressurization is completed, the control module controls the air extraction assembly 2 to stop working, and controls the flow valve to close.

[0051] Please refer to Figure 1 In some embodiments, the rapid depressurization silo for preventing uneven distribution of materials further comprises a dust collection assembly 8, and the depressurization pipe 3 and the air extraction assembly 2 are connected to the dust collection assembly 8.

[0052] Specifically, when the materials are fed into the bin body 1, part of the powdery materials can be dispersed into the air. During the depressurization, a small amount of powdery materials can be extracted together with the air. In order to avoid waste or pollution of the powdery materials, the dust collection assembly 8 is provided to filter and collect the powdery materials. The dust collection assembly 8 can be a bag dust collector, which has a first chamber and a second chamber. The first chamber and the second chamber are communicated, and a bag is arranged at the communication port of the first chamber and the second chamber. The first chamber is communicated with the air extraction assembly 2, and the second chamber is communicated with the depressurization pipe 3. The air extraction assembly 2 extracts the gas in the first chamber, so that the second chamber is in a negative pressure state. Then, the gas in the bin body 1 enters the second chamber through the depressurization pipe 3. The gas in the second chamber passes through the bag and enters the first chamber, and is finally discharged. The powdery materials in the gas are filtered by the bag and remain in the second chamber, so that the filtering and collection of the powdery materials are completed. The second chamber is located below the first chamber, and a collection box for collecting the powdery materials is arranged at the bottom of the second chamber.

[0053] In the drawings of the present application, the same or similar reference numerals correspond to the same or similar components; in the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore the terms describing the positional relationship in the drawings are only used for exemplary illustration, and cannot be understood as a limitation of the present patent. For those skilled in the art, the specific meanings of the above terms can be understood according to the specific circumstances.

[0054] The above is only a preferred embodiment of the present application, and is not intended to limit the present application. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A quick pressure relief silo for preventing uneven distribution of material, characterized in that, The invention relates to a quick pressure relief silo for preventing uneven distribution of materials, comprising: a silo body, the upper end of which is provided with a plurality of evenly distributed pressure relief holes and a feed inlet in the middle part; an air extraction assembly; a pressure relief pipe for connecting the pressure relief holes and the air extraction assembly; a spoiler arranged in the silo body and separating the interior of the silo body into an upper chamber and a lower chamber, the spoiler being provided with a plurality of guide vanes at intervals, and the spoiler being provided with a through hole below the feed inlet.

2. A quick pressure relief silo to prevent material maldistribution according to claim 1, characterized in that, The silo body is cylindrical, and the plurality of pressure relief holes are arranged in a ring shape at intervals with the central axis of the silo body as the center line.

3. A quick pressure relief silo to prevent material maldistribution according to claim 2, characterized in that, The distance between the pressure relief holes and the inner side wall of the silo body is smaller than the distance between the pressure relief holes and the central axis of the silo body.

4. The rapid pressure relief silo to prevent material segregation as claimed in claim 1, wherein, The number of pressure relief pipes is multiple, and the pressure relief pipes are connected to at least one pressure relief hole, and the number of pressure relief holes connected by the multiple pressure relief pipes is the same.

5. The rapid pressure relief silo to prevent material segregation as claimed in claim 1 wherein, The plurality of guide vanes are arranged in a ring shape at intervals; or The plurality of guide vanes are arranged at intervals along a straight line.

6. The rapid pressure relief silo to prevent material segregation as claimed in claim 1, wherein, There is an included angle between the extension direction of at least part of the guide vanes and the vertical direction.

7. The rapid pressure relief silo to prevent material segregation as claimed in claim 1 wherein, The quick pressure relief silo for preventing uneven distribution of materials further comprises a plurality of guide members, the plurality of guide members correspond one-to-one to the plurality of pressure relief holes, the guide members are arranged below the corresponding pressure relief holes, and the upper end of the guide member is a conical surface with a convex middle part.

8. The rapid pressure relief silo to prevent material segregation of claim 1, wherein, The quick pressure relief silo for preventing uneven distribution of materials further comprises a control module, a plurality of flow detection members, and a plurality of flow valves, the flow detection members and the flow valves are arranged at any pressure relief hole, and the flow detection members and the flow valves are electrically connected to the control module.

9. A quick pressure relief silo to prevent material maldistribution according to claim 8, characterized in that, The quick pressure relief silo for preventing uneven distribution of materials further comprises an air pressure detection member, the air pressure detection member is arranged in the silo body, and the air pressure detection member and the air extraction assembly are electrically connected to the control module.

10. The rapid pressure relief silo to prevent material segregation of claim 1, wherein, The quick pressure relief silo for preventing uneven distribution of materials further comprises a dust collection assembly, and the pressure relief pipe and the air extraction assembly are connected to the dust collection assembly.

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