Flow field structure for dust-containing air in limited space

Abstract

The utility model provides a kind of flow field structure of dust-containing air steering uniform distribution in limited space belongs to dust removal purification technical field, including bunker and buffer bin, the buffer bin is set in the top of the bunker, the inside of the buffer bin has the buffer cavity and the flow cavity that are sequentially transverse communication;The buffer cavity is communicated at the top of the bunker, and the louver structure is provided between the buffer cavity and the flow cavity, the louver structure has multiple louvers, which are horizontally spaced from top to bottom, a drainage gap is formed between adjacent two louvers, and the width of multiple drainage gaps decreases from top to bottom.The utility model provides a kind of flow field structure of dust-containing air steering uniform distribution in limited space, realizes the effective adaptation of dynamic non-uniform airflow in height limited space, forms horizontal uniform airflow, and provides reliable airflow conditions for subsequent dust-containing air collection and purification treatment.

Description

Technical Field

[0001] This utility model belongs to the field of dust removal and purification technology, and more specifically, it relates to a flow field structure that directs dust-laden air in a confined space to a uniformly distributed flow field. Background Technology

[0002] The conveying, storage, or mixing of materials generates a large amount of dust. Furthermore, due to the compact layout and dense stacking of equipment in most production settings, the vertical space of storage areas is often severely limited, further exacerbating the difficulty of airflow control. The dust-laden airflow itself exhibits an uneven distribution due to the irregularity of material movement and the limitations of the spatial structure.

[0003] To avoid the risk of explosion, equipment wear, or environmental pollution caused by dust accumulation, it is usually necessary to collect and purify dusty air in confined spaces. A common practice in existing technologies is to install exhaust fans on the top or sides of the enclosure to draw the dusty air out to the purification system using negative pressure. However, because the initial distribution of dusty airflow in a confined space is extremely uneven, and the design of airflow direction and flow path is greatly restricted when height is limited, the inability to flexibly adjust the structure due to height constraints prevents dynamic adaptation to airflow characteristics. This results in a significant decrease in uniform flow during fluctuations in operating conditions, making it difficult to meet the stable operation requirements of complex industrial environments. Utility Model Content

[0004] The purpose of this invention is to provide a flow field structure that can divert and distribute dusty air in a limited space. In cases where the height space is limited and the structure cannot be flexibly adjusted, it is impossible to dynamically adapt to the airflow characteristics, resulting in a significant decrease in the uniform flow effect when the operating conditions fluctuate.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is: to provide a flow field structure for uniformly distributing dust-laden air in a limited space, including a silo and a buffer silo, wherein the buffer silo is disposed above the silo, and the interior of the buffer silo has a buffer chamber and a flow equalization chamber that are connected horizontally in sequence; The buffer chamber is connected to the top of the silo. A louver structure is provided between the buffer chamber and the flow equalization chamber. The louver structure has multiple louver plates arranged horizontally from top to bottom. A flow-guiding gap is formed between two adjacent louver plates. The width of the multiple flow-guiding gaps decreases from top to bottom. The uneven dust-laden airflow in the silo enters the buffer chamber upwards for buffering, and after passing through multiple flow-guiding gaps, it forms a horizontally uniform dust-laden airflow in the flow-equalizing chamber.

[0006] In one possible implementation, one side wall of the buffer chamber includes an inclined plate that is inclined outward from bottom to top and a longitudinal plate connected to the upper end of the inclined plate, the inclined plate and the longitudinal plate constituting one side wall of the buffer chamber.

[0007] In one possible implementation, the louver structure includes a mounting frame disposed between the buffer cavity and the flow equalization cavity, with a plurality of louver plates horizontally spaced from top to bottom on the mounting frame, and the mounting frame being parallel to the inclined plate.

[0008] In one possible implementation, the louver includes a mounting plate and a dust barrier plate, the mounting plate being fixed to the mounting frame, the dust barrier plate being perpendicular to the mounting plate, and the drainage gap being formed between two adjacent dust barrier plates.

[0009] In one possible implementation, the length of the dust barrier is greater than the length of the mounting plate.

[0010] In one possible implementation, the hopper has an opening on one side for material to enter and exit.

[0011] The beneficial effects of this utility model's confined space dust-laden air diversion and uniform distribution flow field structure are as follows: Compared with the prior art, the gradient gap design of the louver structure achieves adaptive control of airflow, with the width of the guide gaps formed by multiple louvers decreasing from top to bottom. When the dust-laden airflow enters the buffer chamber from the hopper, the airflow will form a pressure distribution that increases from top to bottom due to height limitations during its vertical ascent, resulting in uneven dust-laden airflow. The guide gaps with decreasing width can specifically guide the uneven dust-laden airflow in different height ranges. The wider gap at the top can accommodate airflow with lower pressure and slower velocity, preventing stagnation due to narrow channels. The narrower gap at the bottom can moderately throttle airflow with higher pressure and faster velocity, reducing its impact intensity. This passive adaptation design, which requires no additional structural adjustments, can still achieve dynamic balance based on the pressure and velocity characteristics of the airflow itself, even when the height space is limited and adjustable components cannot be installed, thus providing a continuous and uniform airflow to the flow equalization chamber. This invention provides a flow field structure for uniformly distributing dust-laden air in a confined space. This structure eliminates the need for large-angle, long-distance turning of non-uniform dust-laden airflow within a height-limited space. Instead, the airflow smoothly transitions through the guiding action of louvers, forming a horizontal, uniform dust-laden airflow. This reduces the problems of eddies and energy loss caused by space compression. This integrated design, which achieves buffering, guiding, and uniform flow within a limited height, effectively adapts to dynamically non-uniform airflow, providing reliable airflow conditions for subsequent dust-laden air collection and purification. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 A schematic diagram of a flow field structure for uniformly distributing dust-laden air in a confined space, provided by this utility model; Figure 2 for Figure 1 A magnified view of a section at point M; Figure 3 This is a schematic diagram of the louvered panel structure.

[0014] In the picture: 100. Hopper; 110. Opening; 200. Buffer hopper; 210. Buffer chamber; 220. Flow equalization chamber; 230. Purification chamber; 240. Inclined plate; 250. Longitudinal plate; 260. Lower sealing plate; 300. Louver structure; 310. Mounting frame; 320. Louvered plate; 321. Mounting plate; 322. Dust barrier plate. Detailed Implementation

[0015] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0016] Unless otherwise explicitly specified, the use of terms such as "first," "second," or "third" is intended to distinguish different objects, not to describe a specific order.

[0017] Unless otherwise expressly defined, the use of directional terms such as “center,” “lateral,” “longitudinal,” “horizontal,” “vertical,” “top,” “bottom,” “inner,” “outer,” “upper,” “lower,” “front,” “back,” “left,” “right,” “clockwise,” “counterclockwise,” “high,” and “low” to indicate orientation or positional relationships is based on the orientation and positional relationships shown in the accompanying drawings and is only for the convenience of describing the present invention and simplifying the description. It is not intended to 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 limiting the specific protection scope of the present invention.

[0018] Please see Figure 1 and Figure 2This invention provides a flow field structure for uniformly distributing dust-laden air in a confined space. The flow field structure includes a hopper 100 and a buffer hopper 200. The buffer hopper 200 is positioned above the hopper 100. The interior of the buffer hopper 200 comprises a buffer chamber 210 and a flow equalization chamber 220 connected horizontally in sequence. The buffer chamber 210 is connected to the top of the hopper 100. A louver structure 300 is provided between the buffer chamber 210 and the flow equalization chamber 220. The louver structure 300 has multiple louvered plates 320 arranged horizontally from top to bottom, forming a flow-guiding gap between adjacent louvered plates 320. The width of the multiple flow-guiding gaps decreases from top to bottom. The uneven dust-laden airflow in the hopper 100 enters the buffer chamber 210 for buffering, and after passing through the multiple flow-guiding gaps, forms a horizontally uniform dust-laden airflow in the flow equalization chamber 220.

[0019] This invention provides a flow field structure for uniformly distributing dust-laden air in a confined space. Compared with existing technologies, the gradient gap design of the louver structure 300 achieves adaptive control of airflow. The width of the guide gaps formed by multiple louvers 320 decreases from top to bottom. When the dust-laden airflow enters the buffer chamber 210 from the hopper 100, the airflow will form a pressure distribution that increases from top to bottom due to height limitations during its vertical ascent, resulting in uneven dust-laden airflow. The guide gaps with decreasing width can specifically guide the uneven dust-laden airflow in different height ranges. The wider gap at the top can accommodate airflow with lower pressure and slower velocity, preventing stagnation due to narrow channels. The narrower gap at the bottom can moderately throttle airflow with higher pressure and faster velocity, reducing its impact intensity. This passive adaptation design, which requires no additional structural adjustments, can still achieve dynamic balance based on the pressure and velocity characteristics of the airflow itself, even when the height space is limited and adjustable components cannot be installed, thus providing a continuous and uniform airflow to the flow equalization chamber 220. This invention provides a flow field structure for uniformly distributing dust-laden air in a confined space. This structure eliminates the need for large-angle, long-distance turning of non-uniform dust-laden airflow within a height-limited space. Instead, the airflow smoothly transitions through the guiding action of the louvers 320, forming a horizontal, uniform dust-laden airflow. This reduces the problems of eddies and energy loss caused by space compression. This integrated design, which achieves buffering, guiding, and uniform flow within a limited height, effectively adapts to dynamically non-uniform airflow, providing reliable airflow conditions for subsequent dust-laden air collection and purification.

[0020] It is worth noting that a purification chamber 230 is provided on the side of the flow equalization chamber 220 away from the buffer chamber 210. A purification device is installed in this purification chamber 230. A horizontally uniform, dust-laden airflow enters the purification chamber 230 and is purified by the device. The purified airflow then flows out from the other side of the purification chamber 230 and enters the subsequent processing flow. The purification device continuously intercepts and adsorbs dust and other impurities in the dust-laden airflow to ensure that the discharged airflow meets the corresponding cleanliness standards.

[0021] Please see Figure 1 One side wall of the buffer chamber 200 includes an inclined plate 240 that slopes outward from bottom to top and a longitudinal plate 250 connected to the upper end of the inclined plate 240. The inclined plate 240 and the longitudinal plate 250 constitute one side wall of the buffer cavity 210. One side of the buffer cavity 210 extends laterally to one side of the hopper 100. When the dust-laden airflow enters the buffer cavity 210 from the hopper 100, the inclined plate 240 can use its tilt angle to guide the airflow upward and in the direction of the lateral extension of the buffer cavity 210, promoting the full diffusion of the dust-laden airflow and thus filling the entire buffer cavity 210. This avoids dead airflow zones within the buffer cavity 210, allowing more dust-laden airflow to contact the subsequent louver structure 300, creating better conditions for the louver structure 300 to achieve uniform airflow distribution.

[0022] In some industrial sites, the available height for installing dust collection devices is often limited due to constraints such as equipment layout and plant height. This structure, by extending the buffer chamber 210 laterally towards the hopper 100, replaces the method of simply increasing the height to expand the volume of the buffer chamber 210. Without occupying excessive vertical space, it ensures that the buffer chamber 210 has sufficient volume to accommodate and handle dust-laden airflow. This satisfies the installation requirements of height-constrained spaces while ensuring the normal function of the buffer chamber 210, enabling the dust collection system to operate stably and efficiently in complex spatial environments and improving the equipment's adaptability to different site conditions.

[0023] Please see Figure 2The louver structure 300 includes a mounting frame 310 disposed between a buffer chamber 210 and a flow equalization chamber 220. Multiple louvers 320 are horizontally spaced from top to bottom on the mounting frame 310, which is parallel to the inclined plate 240. When the dust-laden airflow enters the buffer chamber 210, the inclined buffer channel formed by the inclined plate 240 and the parallel alignment of the mounting frame 310 with the inclined direction of the mounting frame 310 ensures a relatively stable flow state of the dust-laden airflow before it enters the flow gap. The inclined mounting frame 310 allows the dust-laden airflow passing through its flow gap to smoothly transform into a horizontal airflow, uniformly entering the flow equalization chamber 220 and subsequent purification devices. This orderly transformation of airflow direction ensures that the dust-laden airflow entering the purification device is uniformly distributed horizontally, avoiding problems such as excessively high local concentrations or uneven flow rates caused by chaotic airflow directions. The uniform horizontal dust-laden airflow allows the purification materials in the purification device to be evenly stressed and function fully, improving the filtration efficiency and purification effect of the purification device. In addition, this structural design improves the continuity and integrity of airflow between the buffer chamber 210, the louver structure 300 and the flow equalization chamber 220, reduces airflow impact and energy loss between the links, and lowers the energy consumption during system operation.

[0024] Please see Figure 3 The louvered plate 320 includes a mounting plate 321 and a dust-blocking plate 322. The mounting plate 321 is fixed to the mounting frame 310, and the dust-blocking plate 322 is perpendicular to the mounting plate 321. A flow-guiding gap is formed between two adjacent dust-blocking plates 322. The mounting plate 321, fixed to the mounting frame 310, provides a stable support foundation for the dust-blocking plate 322, ensuring that the dust-blocking plate 322 is not easily shaken or deformed under airflow impact. The perpendicularity of the dust-blocking plate 322 to the mounting plate 321 gives the flow-guiding gap formed between adjacent dust-blocking plates 322 a clear guiding function. When dust-laden airflow passes through the flow-guiding gap, the dust-blocking plate 322 can effectively block and divert the airflow. Larger dust particles, when flowing through the dust-blocking plate 322, will be blocked on the surface of the dust-blocking plate 322 due to collision or inertia, achieving a preliminary dust removal effect and reducing the filtration load of subsequent purification devices.

[0025] Please see Figure 3The length of the dust-blocking plate 322 is greater than that of the mounting plate 321. The longer length of the dust-blocking plate 322 extends it further in the direction perpendicular to the mounting plate 321, enabling it to intercept and guide a wider range of dust-laden airflow. Furthermore, the longer dust-blocking plate 322 increases the contact area with the dust-laden airflow, more effectively intercepting larger dust particles in the air. As dust particles move in the airflow, the probability of them colliding with the dust-blocking plate 322 or settling due to inertia increases with the increased contact area, resulting in more large dust particles being blocked on the surface of the dust-blocking plate 322, thus enhancing the initial dust removal effect.

[0026] Please see Figure 1 A lower sealing plate 260 is provided at the bottom of the purification chamber 230. One outer end of the lower sealing plate 260 is vertically fixed to the side wall of the buffer chamber 200, and the inner end of the lower sealing plate 260 extends into the buffer chamber 200. The lower end of the mounting frame 310 is connected to the inner end of the lower sealing plate 260. The lower sealing plate 260, through its vertical fixation to the side wall of the buffer chamber 200 at its outer end, forms a stable supporting foundation. The lower end of the mounting frame 310, connected to the inner end of the lower sealing plate 260, provides a reliable fixing point for the mounting frame 310 thanks to the load-bearing capacity of the lower sealing plate 260. This connection method effectively disperses the airflow impact force and its own weight borne by the mounting frame 310 and the louver structure 300, preventing the mounting frame 310 from loosening or deforming due to concentrated force, and ensuring the dimensional stability of the drainage gap in the louver structure 300. The design of the lower sealing plate 260 extending into the chamber can provide some shielding and guidance for the airflow from the buffer chamber 210 to the flow equalization chamber 220, reducing the disorderly flow of airflow from the bottom of the buffer chamber 210 directly to the bottom of the flow equalization chamber 220, and promoting a more concentrated and evenly distributed airflow through the louver structure 300. Combined with the tilt angle and drainage gap design of the louvers themselves, the airflow path can be further standardized, allowing the buffered dust-laden airflow to enter the drainage gap more orderly.

[0027] Please see Figure 1 The outer end of the lower sealing plate 260 penetrates the side wall of the buffer chamber 200 and extends to the outside. The portion of the lower sealing plate 260 extending to the outside can form a more stable connection structure with the side wall of the buffer chamber 200, thereby increasing the load-bearing capacity of the lower sealing plate 260 by increasing the stress points and support area.

[0028] Please see Figure 1A top side cavity is formed between the lower sealing plate 260 and the top of the hopper 100, and the top side cavity connects to the buffer cavity 210. When a large amount of dust-laden airflow is generated by pouring material into the hopper 100, some of the dust-laden airflow may diffuse to the side along the top of the hopper 100. The existence of the top side cavity provides a dedicated flow channel for this diffused dust-laden airflow, allowing it to smoothly enter the buffer cavity 210 through the top side cavity, avoiding the accumulation of dust-laden airflow in the area between the top of the hopper 100 and the lower sealing plate 260, and reducing the occurrence of airflow congestion. The connection between the top side cavity and the buffer cavity 210 is equivalent to expanding the buffer space. After the dust-laden airflow enters the top side cavity, it will first undergo a certain degree of buffering and deceleration here before flowing into the buffer cavity 210, making the flow stabilization effect of the buffer cavity 210 more significant.

[0029] Please see Figure 1 The silo 100 has an opening 110 on one side for material to enter and exit. The opening 110 provides a direct passage for material transport vehicles to enter and exit the silo 100, so that materials can be directly transferred into or out of the silo 100 by vehicles, reducing intermediate links in the material transfer process.

[0030] Furthermore, based on the aforementioned flow field structure of uniformly distributed dust-laden air in a limited space, an exhaust pipe is installed on one side of the buffer chamber 200 and connected to the purification chamber 230. A fan is installed on the exhaust pipe, and the fan is started to create a negative pressure environment for gas flow in the silo 100 and the buffer chamber 200, thereby achieving the path of the gas in the silo 100 sequentially passing through the inner cavity of the silo 100, the buffer chamber 210, the flow equalization chamber 220 and the purification chamber 230 into the exhaust pipe.

[0031] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A flow field structure for uniformly distributing dust-laden air in a confined space, characterized in that, It includes a hopper (100) and a buffer hopper (200), the buffer hopper (200) being disposed above the hopper (100), and the interior of the buffer hopper (200) having a buffer chamber (210) and a flow equalization chamber (220) connected in sequence laterally; The buffer chamber (210) is connected to the top of the hopper (100). A louver structure (300) is provided between the buffer chamber (210) and the flow equalization chamber (220). The louver structure (300) has multiple louver plates (320) arranged horizontally from top to bottom. A flow-guiding gap is formed between two adjacent louver plates (320). The width of the multiple flow-guiding gaps decreases from top to bottom. The uneven dust-laden airflow in the hopper (100) enters the buffer chamber (210) for buffering, and after passing through multiple flow-guiding gaps, it forms a horizontally uniform dust-laden airflow in the flow-equalizing chamber (220).

2. The flow field structure for uniformly distributing dust-laden air in a confined space as described in claim 1, characterized in that, The side wall of the buffer chamber (200) includes an inclined plate (240) that is inclined outward from bottom to top and a longitudinal plate (250) connected to the upper end of the inclined plate (240). The inclined plate (240) and the longitudinal plate (250) constitute one side wall of the buffer cavity (210).

3. The flow field structure for uniformly distributing dust-laden air in a confined space as described in claim 2, characterized in that, The louver structure (300) includes a mounting frame (310) disposed between the buffer cavity (210) and the flow equalization cavity (220), and a plurality of louver plates (320) are horizontally spaced from top to bottom on the mounting frame (310), and the mounting frame (310) is parallel to the inclined plate (240).

4. The flow field structure for uniformly distributing dust-laden air in a confined space as described in claim 3, characterized in that, The louvered panel (320) includes a mounting plate (321) and a dust barrier plate (322). The mounting plate (321) is fixed to the mounting frame (310), and the dust barrier plate (322) is perpendicular to the mounting plate (321). The drainage gap is formed between two adjacent dust barrier plates (322).

5. The flow field structure for uniformly distributing dust-laden air in a confined space as described in claim 4, characterized in that, The length of the dust barrier plate (322) is greater than the length of the mounting plate (321).

6. A flow field structure for uniformly distributing dust-laden air in a confined space as described in any one of claims 1-5, characterized in that, The hopper (100) has an opening (110) on one side for material to enter and exit.

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