Powder bin

Abstract

The utility model discloses a powder bin, and relates to the technical field of material storage, the powder bin comprises a bin body and a shunting structure, a material storage cavity with an upward opening is formed in the bin body; the flow dividing structure is arranged on the bottom wall in the material storage cavity, the flow dividing structure divides the bottom space in the material storage cavity into at least two material storage areas, the flow dividing structure is used for guiding materials to the material storage areas, an air flow channel is formed in the flow dividing structure, and the air flow channel is communicated with the material storage areas. And the air flow channel is communicated with the outside of the material storage cavity and is used for introducing air into the material storage area. According to the powder stock bin, the distribution structure is arranged, powder can be distributed into the different storage areas on the different sides of the distribution structure, then gas is introduced into the gas flow channel of the distribution structure from the outside so that the gas can spray gas to the powder in the storage areas, and therefore the problem that the powder is prone to arching and blocking is solved.

Description

Technical Field

[0001] This utility model relates to the field of material storage technology, and in particular to a powder silo. Background Technology

[0002] Powder materials are widely used in production. However, during the discharge process from the silo, powder materials are prone to problems such as sticking to the wall and arching due to their own weight and the cohesive force between particles, which can lead to clogging of the silo. This is especially true in the middle and lower part of the silo, where the material has poorer flowability, making it more likely to cause such problems and affecting the normal use of the material. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a powder silo that can solve the problem of powder bridging and blockage in the silo, making the discharge of powder from the silo smoother.

[0004] A powder silo according to an embodiment of the present invention includes: a silo body and a diversion structure. The silo body has an upwardly open storage cavity. The diversion structure is disposed on the bottom wall of the storage cavity. The diversion structure divides the bottom space of the storage cavity into at least two storage areas. The diversion structure is used to guide material to the storage areas. An airflow channel is formed in the diversion structure. The airflow channel is connected to the outside of the storage cavity and is used to ventilate the storage areas.

[0005] According to the powder silo of this utility model embodiment, by setting a diversion structure, the powder can first be diverted to different storage areas on different sides of the diversion structure, and then gas is introduced into the airflow channel of the diversion structure from the outside, so that the gas sprays the powder in the storage area, thereby reducing the problem of powder arching and blockage.

[0006] According to an embodiment of the present invention, the powder silo includes an upper guide section and a lower gas flow section connected from top to bottom. The upper guide section is provided with guide slopes in the direction of at least two storage areas. The lower gas flow section is provided with the airflow channel and is adapted to spray gas towards the storage area when gas is introduced.

[0007] According to an embodiment of the present invention, the powder silo includes a hollow air inlet plate and an air jet plate. The air inlet plate is located below the air jet plate. The air inlet plate is provided with a first air inlet hole. The air jet plate is provided with air jet holes on both sides facing a first direction. The first air inlet hole and the air jet holes are connected inside the lower gas flow section to form the airflow channel.

[0008] According to an embodiment of the present invention, in a powder silo, the upper guide portion and the lower gas flow portion are connected to the two ends of the silo body along the second direction of the silo body.

[0009] According to the powder silo of this utility model embodiment, the cross-sectional structure of the upper guide part is an isosceles trapezoid, and the two base angles of the isosceles trapezoid are both 'a', and satisfy 70°≤a<90°.

[0010] According to the powder silo of this utility model embodiment, the air inlet plate protrudes partially from the outer wall of the silo body, and the first air inlet hole is provided at the protrusion.

[0011] According to the powder hopper of this utility model embodiment, the bottom of the air inlet plate is further provided with a low discharge port, the height of which is lower than the height of the first air inlet hole.

[0012] According to an embodiment of the present invention, the powder hopper further includes a second air inlet, and there are multiple second air inlets. Some of the multiple second air inlets are spaced apart along the height direction of the hopper body, and at least some of the second air inlets are at a height higher than the height of the diversion structure.

[0013] According to an embodiment of the present invention, the powder silo body comprises, from top to bottom, a first rectangular structure, a trapezoidal structure, and a second rectangular structure connected together, and the diversion structure is located at the inner bottom of the trapezoidal structure.

[0014] According to the powder silo of this utility model embodiment, the included angle between the side of the trapezoidal structure and the horizontal plane is b, and satisfies: 60°≤b<90°.

[0015] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0017] Figure 1 This is a front view of the powder silo according to an embodiment of the present invention;

[0018] Figure 2 This is a side view of the split hopper according to an embodiment of the present invention.

[0019] Figure label:

[0020] Powder silo 100,

[0021] The hopper body 1 includes a first rectangular structure 11, a trapezoidal structure 12, a second rectangular structure 13, a second air inlet 2, a flow diversion structure 3, an upper guide section 31, a guide slope 311, a jet plate 32, a jet hole 321, an air inlet plate 33, a first air inlet 331, and a low exhaust port 332. Detailed Implementation

[0022] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0023] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] The following is for reference. Figures 1-2 According to the embodiment of the present utility model, the powder silo 100 is provided with a diversion structure 3. First, the powder can be diverted to different storage areas on different sides of the diversion structure 3. Then, gas is introduced into the airflow channel of the diversion structure 3 from the outside so that the gas sprays the powder in the storage area, thereby reducing the problem of powder arching and blockage.

[0026] like Figure 1 and Figure 2As shown, a powder hopper 100 according to an embodiment of the present invention includes: a hopper body 1 and a diversion structure 3.

[0027] The hopper body 1 has an upward-open storage cavity; the diversion structure 3 is located on the bottom wall of the storage cavity, and the diversion structure 3 divides the bottom space of the storage cavity into at least two storage areas. The diversion structure 3 is used to guide material to the storage areas. An airflow channel is formed in the diversion structure 3, and the airflow channel is connected to the outside of the storage cavity and is used to ventilate the storage areas.

[0028] In practice, the storage chamber is open upwards, meaning that powder can be placed inside. The storage chamber of the silo body 1 is designed to be vertically connected and funnel-like. Powder can be discharged through the silo body 1 and transferred to another device that needs to store powder. The powder enters from the top of the silo body 1 and falls to the bottom of the silo body 1 by gravity. Under the action of the diversion structure 3, the powder is diverted to different storage areas at the bottom of the silo body 1. In other words, the diversion structure 3 can first prevent the powder from accumulating at the bottom of the silo body 1, which can also be understood as the middle and lower part of the silo body 1, thus initially dispersing the powder.

[0029] The diversion structure 3 can be set at the center of the hopper body 1 along the first direction, which is... Figure 1 The flow distribution structure 3 can be set in other positions within the silo body 1 in the left and right directions, as long as it can divide the bottom of the silo body 1 into at least two storage areas. When the flow distribution structure 3 is set in the center of the silo body 1, the flow distribution structure 3 divides the lower part of the silo body 1 into two small silos. When the powder enters the silo body 1, the channel changes, which facilitates the eccentric flow of the powder material and further prevents the material from being compacted and arched. Its structure is simple, easy to install, highly reliable, and can disperse the powder in the silo body 1 more evenly.

[0030] In addition, the diversion structure 3 also forms an airflow channel, which is connected to the outside and inside of the silo body 1. The air source can be introduced into the inside of the silo body 1 through the airflow channel to disperse the powder in the silo body 1 and thus prevent the powder from accumulating.

[0031] The airflow can enter the diversion structure 3 through the bottom of the diversion structure 3 and outside the silo body 1, or through the side of the diversion structure 3 and outside the silo body 1. The diversion structure 3 can spray air towards the storage area or towards the top, so that the powder is dispersed in different directions, improving the flowability of the powder and thus avoiding problems such as powder sticking to the wall and arching.

[0032] In some embodiments, the diversion structure 3 includes an upper guide section 31 and a lower gas flow section connected from top to bottom. The upper guide section 31 is provided with guide slopes 311 in the direction of distribution of at least two storage areas. The lower gas flow section is provided with an airflow channel and is adapted to spray gas into the storage area when gas is introduced.

[0033] The upper guide section 31 is provided with a guide slope 311 in the direction of at least two storage areas. This means that the powder can flow more smoothly into the storage area through the guide slope 311. The guide slope 311 can be set at the top of the diversion structure 3 or at a position near the top of the diversion structure 3. The guide slope 311 can be constructed as a smooth slope, so that the powder can slide down and be diverted better after contacting the diversion structure 3, thereby preventing material accumulation.

[0034] The lower gas flow section and the upper guide section 31 can be two separate components connected together, or the upper guide section 31 and the lower gas flow section can be directly constructed as one unit. That is, the top of the diversion structure 3 mainly serves as a guide, while the area below the guide slope 311 of the diversion structure 3 is the lower gas flow section. The powder flowing down along the guide slope 311 flows to both sides of the lower gas flow section. At this time, the lower gas flow section can spray air towards the storage area, so that the lower gas flow section can spray air directly towards the powder that has just fallen, thereby preventing the powder from accumulating and arching in time.

[0035] In some embodiments, the lower gas flow section includes a hollow air inlet plate 33 and an air jet plate 32. The air inlet plate 33 is located below the air jet plate 32. The air inlet plate 33 is provided with a first air inlet hole 331. The air jet plate 32 is provided with air jet holes 321 on both sides facing the first direction. The first air inlet hole 331 and the air jet holes 321 are connected inside the lower gas flow section to form an airflow channel.

[0036] In practice, the first air inlet 331 of the air inlet plate 33 connects to the side of the hopper body 1. The air inlet plate 33 has a first cavity, and the air jet plate 32 has a second cavity. The first cavity and the second cavity are connected, and the first cavity is connected to the first air inlet 331, while the second cavity is connected to the air jet 321. The air jet plate 32 has air jet 321 on both sides facing the first direction, which is the distribution direction of the two storage areas. Figure 1 In the left and right directions, the jet plate 32 sprays gas towards the corresponding storage area along the distribution direction of different storage areas. For example, the jet holes 321 on the jet plate 32 can be set to multiple, and the array of multiple jet holes 321 is distributed in multiple rows and columns. After the gas enters through the first cavity of the air inlet plate 33, it is then evenly sprayed towards the storage area through the multiple jet holes 321 of the jet plate 32, thereby achieving a more uniform dispersion of the powder. That is, the gas is sprayed from multiple jet holes 321 towards the powder at different positions in the storage area, thereby improving the dispersion effect of the powder.

[0037] In some embodiments, the upper guide section 31 and the lower gas flow section are connected to the two ends of the hopper body 1 along the second direction.

[0038] Reference Figure 2 As shown, the second direction intersects with the first direction. The first direction is the distribution direction of the two storage areas. Therefore, the second direction can be the direction in which the diversion structure 3 extends towards the inner wall of the powder silo body 1 inside the silo body. For example, if the first direction is... Figure 1 When the left and right directions are met, the second direction is... Figure 1 In the direction perpendicular to the paper, when both ends of the upper guide section 31 and the lower gas flow section are connected to the hopper body 1 along the second direction, that is, the upper guide section 31 and the lower gas flow section divide the lower part of the hopper body 1 into different storage areas, so that the powder flows between the diversion structure 3 and the inner wall of the hopper body 1, and is dispersed into the storage area by the gas ejected from the jet hole 321 of the lower gas flow section, so that more powder is more evenly dispersed.

[0039] In some embodiments, the upper guide portion 31 has a cross-sectional structure of an isosceles trapezoid, where both base angles of the isosceles trapezoid are α, and satisfy 70°≤α<90°.

[0040] In practice, the upper guide section 31 is an isosceles trapezoid, meaning that the two sides of the isosceles trapezoid are symmetrically distributed along the first direction, and the base of the isosceles trapezoid is close to the top of the lower gas flow section. The two base angles of the isosceles trapezoid are the angles between the two sides and the base, such as 60 degrees, 72°, 75°, 80°, etc. At this time, the inclination of the guide slope 311 of the upper guide section 31 is limited. By increasing the inclination of the guide slope 311, the powder can fall into the storage area more smoothly without accumulating on the top of the upper guide section 31.

[0041] Alternatively, the upper guide section 31 can be configured as a hollow structure. The hollow structure can reduce the weight of the upper guide section 31, and at the same time, while the airflow flows from the air inlet plate 33 into the interior of the lower gas flow section, it also provides a buffer space for the airflow, preventing the airflow pressure from being too high and causing the powder to fall smoothly.

[0042] In some embodiments, the air inlet plate 33 protrudes partially from the outer wall of the hopper body 1, and a first air inlet hole 331 is provided at the protrusion.

[0043] Reference Figure 2As shown, at least one end of the air inlet plate 33 protrudes from the hopper body 1 along the second direction. At this time, the first air inlet hole 331 is located at the position where the air inlet plate 33 protrudes in the second direction. The first air inlet pipe is installed at the first air inlet hole 331 to facilitate connection with the interface of the air source. Furthermore, the air inlet plate 33 protrudes partially outward, which means that the gas capacity of the air inlet plate 33 can be appropriately increased, so that the gas can be sprayed out in a timely and sufficient manner along the multiple jet holes 321, thereby improving the gas dispersion effect on the powder.

[0044] In addition, the air intake plate 33 and the jet plate 32 are adapted to the inner wall of the hopper body 1 at both ends along the second direction and are connected to the inner wall of the hopper body 1.

[0045] In some embodiments, the bottom of the air inlet plate 33 is also provided with a low outlet 332, the height of which is lower than the height of the first air inlet 331. First, gas is introduced through the first air inlet 331, so that the gas is sprayed towards the storage area through multiple jet holes 321. That is, some powder is blown towards the storage area during the jetting process of the jet holes 321 and flows out of the hopper body 1 from the storage area. A very small amount of powder particles may fall into the airflow channel in the diversion structure 3 through the jet holes 321. That is, after the jetting stops, there may be a very small amount of powder particles in the airflow channel of the diversion structure 3, and the powder particles can be discharged through the low outlet 332.

[0046] Setting the height of the low discharge port 332 lower than the height of the first air inlet 331 of the air inlet plate 33 allows the powder particles to be discharged better by gravity and reduces the impact on the first air inlet 331.

[0047] In some embodiments, the powder silo 100 further includes a second air inlet 2. There are multiple second air inlets 2, and some of the multiple second air inlets 2 are spaced apart along the height direction of the silo body 1. At least some of the second air inlets 2 are higher than the height of the diversion structure 3.

[0048] Specifically, by setting a second air inlet 2 in the powder silo 100, and the multiple second air inlets 2 can be distributed at intervals along the height direction of the powder silo 100, that is, multiple air inlets 2 can be correspondingly set with multiple air inlets. By connecting the corresponding air sources to the multiple air inlets, gas can be introduced into the silo body 1 from different heights, thereby enhancing the flowability of the powder in the silo body 1 and preventing the material from sticking to the wall. The addition of an upper guide section 31 in the silo body 1 facilitates the breaking of the cohesion at the center of the powder silo 100 and prevents the powder from arching.

[0049] In addition, multiple second air inlets 2 can be set at different positions around the hopper body 1, which can enhance the flowability of powder in the circumferential direction of the hopper body 1, so that the powder is blown apart after entering the powder hopper 100, reducing the phenomena such as bridging and aggregation of powder before the diversion structure 3.

[0050] Furthermore, the second air inlet 2, located at the lowest position, can be higher than the position of the jet plate 32, thereby allowing the powder hopper 100 to disperse the powder at multiple positions in the overall height direction, reducing the aggregation of the powder, and also avoiding excessive or concentrated force in dispersing the powder at a certain position, which would make the powder difficult to fall.

[0051] In some embodiments, the hopper body 1 includes, from top to bottom, a first rectangular structure 11, a trapezoidal structure 12, and a second rectangular structure 13 connected together, and the diversion structure 3 is located at the inner bottom of the trapezoidal structure 12.

[0052] like Figure 2 As shown, the powder first enters the silo body 1 from the first rectangular structure 11, and then reaches the trapezoidal structure 12 through the first rectangular structure 11. The cross-sectional width of the trapezoidal structure 12 near the first rectangular structure 11 is greater than the cross-sectional width away from the first rectangular structure 11, so that the silo body 1 presents a phenomenon of being wider at the top and narrower at the bottom. This allows the powder to rely on its own gravity and flow to one end of the silo body 1 for outlet. The outlet end of the silo body 1 is the end where the second rectangular structure 13 of the silo body 1 is located, thereby realizing the outflow and transfer of the powder.

[0053] Furthermore, when the jet plate 32, the upper guide section 31, and the air inlet plate 33 are all connected by separate structures and the flow splitting structure 3 is located at the bottom of the trapezoidal structure 12, the cross-sectional shape of the jet plate 32 is an inverted trapezoid. The top edge of the jet plate 32 coincides with the bottom edge of the upper guide section 31, and the bottom edge of the jet plate 32 coincides with the top edge of the air inlet plate 33. At the same time, the jet holes 321 of the jet plate 32 are evenly arranged on the jet plate 32 and are internally connected to the air inlet plate 33 in a hollow structure, which facilitates internal air intake and the dispersion and flow of powder at the bottom of the hopper body 1.

[0054] In some embodiments, the angle between the side of the trapezoidal structure 12 and the horizontal plane is b, and satisfies: 60°≤b<90°.

[0055] In practice, the angle between the side of the trapezoidal structure 12 and the horizontal plane can be set to 60°, 65°, 70°, etc., which means that the hopper body 1 has a funnel-shaped structure, thereby improving the smoothness of the powder flowing from the inlet end to the outlet end. The inlet end is located near the first rectangular structure 11, and the outlet end is located near the second rectangular structure 13. The hopper body 1 is mainly constructed as a trapezoidal structure 12, and the angle between the side of the trapezoidal structure 12 and the horizontal plane is limited, so that the powder can gradually flow from the inlet end to the outlet end, avoiding the problem of powder accumulation caused by too much powder flowing at one time.

[0056] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. 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.

[0057] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A powder silo, characterized in that, include: The silo body has an upward-opening storage cavity formed within it; The diversion structure is located on the bottom wall of the storage cavity, which divides the bottom space of the storage cavity into at least two storage areas. The diversion structure is used to guide material into the storage areas. An airflow channel is formed in the diversion structure, which is connected to the outside of the storage cavity and is used to ventilate the storage areas.

2. The powder silo according to claim 1, characterized in that, The diversion structure includes an upper guide section and a lower gas flow section connected from top to bottom. The upper guide section is provided with guide slopes in the direction of at least two storage areas. The lower gas flow section is provided with the airflow channel and is adapted to spray gas into the storage area when gas is introduced.

3. The powder silo according to claim 2, characterized in that, The lower gas flow section includes a hollow air inlet plate and an air jet plate. The air inlet plate is located below the air jet plate. The air inlet plate is provided with a first air inlet hole. The air jet plate is provided with air jet holes on both sides facing a first direction. The first air inlet hole and the air jet holes are connected inside the lower gas flow section to form the airflow channel.

4. The powder silo according to claim 3, characterized in that, The upper guide section and the lower gas flow section are connected to the two ends of the silo body along the second direction of the silo body.

5. The powder silo according to claim 2, characterized in that, The cross-sectional structure of the upper guide section is an isosceles trapezoid, with both base angles of the isosceles trapezoid being 'a', and satisfying 70°≤a<90°.

6. The powder silo according to claim 3, characterized in that, The air inlet plate protrudes partially from the outer wall of the hopper body, and the first air inlet hole is provided at the protrusion.

7. The powder silo according to claim 3, characterized in that, The bottom of the air intake plate is also provided with a low exhaust port, the height of which is lower than the height of the first air intake hole.

8. The powder silo according to claim 3, characterized in that, It also includes a second air inlet, which is a plurality of second air inlets. Some of the second air inlets are spaced apart along the height direction of the hopper body, and at least some of the second air inlets are at a height higher than the height of the diversion structure.

9. The powder silo according to claim 1, characterized in that, The silo body comprises, from top to bottom, a first rectangular structure, a trapezoidal structure, and a second rectangular structure connected together, with the diversion structure located at the inner bottom of the trapezoidal structure.

10. The powder silo according to claim 9, characterized in that, The angle between the side of the trapezoidal structure and the horizontal plane is b, and satisfies: 60°≤b<90°.

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