An arch-breaking fluidization device to prevent arching of materials in a powder tank

Abstract

This utility model discloses an arch-breaking fluidization device to prevent material from arching in a powder tank. It includes a powder tank mechanism and a piping mechanism embedded in the inner cavity of the powder tank mechanism. The powder tank mechanism has a hopper, a discharge neck fixed to the bottom port of the hopper, and multiple protruding strips arranged in a ring array on the outer surface of the hopper. The inner side of each protruding strip has a groove communicating with the inner cavity of the hopper. The outer surface of the discharge neck has multiple openings arranged in a ring array. The piping mechanism includes a pulse air cannon, a ring pipe connected to the pulse air cannon's delivery port, and multiple outer pipes arranged in a ring array connected to the inner side of the ring pipe. One of the outer pipes is connected at its end to an inner pipe located in the center of the hopper's inner cavity, and the bottom end of the inner pipe is connected to a hollow tank. This arch-breaking fluidization device can achieve multi-directional arch-breaking fluidization throughout the hopper, reducing arch-breaking blind spots, minimizing the impact of pulsed airflow on the tank, and preventing pipe blockage.

Description

Technical Field

[0001] This utility model relates to the technical field of powder breaking equipment, specifically to a breaking fluidization device for preventing materials from arching in a powder tank. Background Technology

[0002] In the concrete production process, the storage and transportation of powder materials are necessary, mainly including cement and fly ash. Vertical powder silos are commonly used for the storage and transportation of powdery materials. During the storage and discharge of powder materials in the silo, the combined effects of interparticle adhesion, internal friction, and silo wall friction can easily cause arching and bridging phenomena to form inside the silo, leading to poor discharge or even material interruption.

[0003] Currently, the industry mainly uses methods such as air cannons and mechanical vibration to address the problem of material arching in powder silos. Existing air cannon arch-breaking devices are mostly arranged at single points or in localized areas, which can only break up arches in the area around the silo wall. They are difficult to cover the center of the silo and the bottom discharge transition area, resulting in obvious blind spots in arch breaking and limited fluidization effect.

[0004] Meanwhile, existing arch-breaking pipelines are mostly directly installed inside the silo, occupying the effective storage space inside the tank. The pipeline vibration generated during pulsed airflow operation directly acts on the tank body, which can easily cause impact damage to the tank structure over long-term operation. In view of the above-mentioned problems, the art proposes a solution for an arch-breaking fluidization device to prevent material arching in powder tanks. Utility Model Content

[0005] The purpose of this invention is to provide an arch-breaking fluidization device to prevent material from arching in a powder tank, thereby addressing the shortcomings mentioned in the background art.

[0006] To address the shortcomings and defects described in the background art, the technical solution of this utility model is as follows:

[0007] An arch-breaking fluidization device for preventing material from arching in a powder tank includes a powder tank mechanism and a pipeline mechanism embedded in the inner cavity of the powder tank mechanism; the powder tank mechanism includes a hopper, a discharge neck fixed to the bottom port of the hopper, and 20-30 protrusions fixed in a ring array on the outer surface of the hopper, the inner end face of each protrusion is provided with a groove communicating with the inner cavity of the hopper, and the outer ring surface of the discharge neck is provided with 20-30 openings in a ring array.

[0008] The pipeline system includes a pulse air cannon, an annular pipe connected to the pulse air cannon's delivery port, and 20-30 outer pipes arranged in a ring array and connected to the inner end face of the annular pipe. The end of the outer pipe closest to the pulse air cannon's delivery port is connected to an inner pipe located in the center of the hopper's inner cavity, and the bottom end of the inner pipe is connected to a hollow tank.

[0009] In a preferred embodiment of this utility model, the outer tubes are all fixed in a ring array within the groove.

[0010] In a preferred embodiment of this utility model, the inner cavities of the outer tube and the annular tube are interconnected, and check valves are installed at the connection points of the outer tube and the annular tube.

[0011] As a preferred embodiment of this utility model, the inner sidewall of the outer tube is provided with multiple air delivery holes in a linear array.

[0012] As a preferred embodiment of this utility model, the outer surface of the inner tube is provided with a plurality of through holes arranged in a ring array.

[0013] As a preferred embodiment of this utility model, the hollow tank is teardrop-shaped, and multiple through holes are provided on the outer surface of the hollow tank. The hollow tank is located at the connection between the hopper and the discharge neck.

[0014] In a preferred embodiment of this utility model, the pulse air cannon delivery port is connected to the annular pipe via a branch pipe.

[0015] As a preferred embodiment of this utility model, a layer of shock-absorbing cotton is adhered between the inner wall of the groove and the outer surface of the outer tube by an adhesive.

[0016] Compared with the prior art, this utility model has the following technical effects and advantages:

[0017] 1. The arch-breaking fluidization device of this utility model achieves multi-directional arch-breaking fluidization in the entire area of ​​the silo by cooperating with the circumferential outer tube, the central inner tube and the bottom hollow tank, reducing the arch-breaking blind zone; the outer tube is embedded in the groove of the silo protrusion, without occupying the effective storage space in the silo, and the shock-absorbing cotton in the groove can absorb the pipeline vibration caused by the pulse airflow, reducing the impact on the tank.

[0018] 2. The check valve of the arch-breaking fluidization device of this utility model can prevent material backflow from clogging the pipeline and improve the operational stability of the device.

[0019] 3. The overall structure of the arch-breaking fluidization device of this utility model is reasonably arranged. The airflow covers the perimeter of the bin wall, the center of the bin body and the discharge transition area, which can effectively break the arching of materials in different positions, improve the material fluidization effect and discharge smoothness, and adapt to the use needs of various powder storage tanks. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0021] Figure 1 This is a schematic diagram of the arch-breaking fluidization mechanism in the arch-breaking fluidization device for preventing materials from arching in a powder tank according to this utility model.

[0022] Figure 2 This is a schematic diagram of the powder tank mechanism in the anti-bridging fluidization device for preventing material from arching in the powder tank according to the present invention.

[0023] Figure 3 This is a schematic diagram of the pipeline mechanism in a breaking fluidization device for preventing material from arching in a powder tank according to the present invention.

[0024] Explanation of reference numerals in the attached figures:

[0025] 1. Powder tank mechanism; 1-1. Hopper; 1-2. Opening; 1-3. Discharge neck; 1-4. Raised bar; 1-5. Groove; 2. Piping mechanism; 2-1. Pulse air cannon; 2-2. Outer pipe; 2-3. Inner pipe; 2-4. Hollow tank; 2-5. Annular pipe. Detailed Implementation

[0026] To provide a clearer explanation and description of the technical solution and implementation of this utility model, several preferred specific embodiments for implementing the technical solution of this utility model are introduced below. The following description is merely exemplary and not intended to limit the scope, application, or use of this disclosure. It should be understood that in all these drawings, the same or similar reference numerals indicate the same or similar parts and features. The various drawings only schematically illustrate the concept and principle of the embodiments of this disclosure and do not necessarily show the specific dimensions and proportions of the various embodiments of this disclosure. The technical solution of this utility model will be clearly and completely described below in conjunction with embodiments of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model.

[0027] Example 1: The anti-bridging fluidization device for preventing material arching in a powder tank provided in this example includes a powder tank mechanism 1 and a pipeline mechanism 2 embedded in the inner cavity of the powder tank mechanism 1. The powder tank mechanism 1 includes a hopper 1-1, a discharge neck 1-3 fixed to the bottom port of the hopper 1-1, and 20-30 protrusions 1-4 fixed in a ring array on the outer surface of the hopper 1-1. The inner end face of each protrusion 1-4 is provided with a groove 1-5 that communicates with the inner cavity of the hopper 1-1. The outer surface of the discharge neck 1-3 has 20-30 openings 1-2 arranged in a ring array. The pipeline mechanism 2 includes a pulse air cannon 2-1, a ring pipe 2-5 connected to the conveying port of the pulse air cannon 2-1, and 20-30 outer pipes 2-2 arranged in a ring array connected to the inner end face of the ring pipe 2-5.

[0028] The outer tube 2-2, closest to the delivery port of the pulse air cannon 2-1, is connected to an inner tube 2-3 located in the center of the inner cavity of the hopper 1-1. The bottom end of the inner tube 2-3 is connected to a hollow tank 2-4. The outer tubes 2-2 are all fixed in a ring array within the groove 1-5, realizing the embedded arrangement of the pipeline mechanism 2 on the powder tank mechanism 1. A layer of vibration damping cotton is adhered between the inner wall of the groove 1-5 and the outer surface of the outer tube 2-2 by adhesive, filling the assembly gap between the groove 1-5 and the outer tube 2-2, and reducing the impact of pipeline vibration on the powder tank mechanism 1 during pulse air supply.

[0029] The outer tube 2-2 and the inner cavity of the annular tube 2-5 are interconnected, and check valves are installed at the connection points of the outer tube 2-2 and the annular tube 2-5 to block the reverse passage between the inner cavity of the pipeline and the external space. Multiple air supply holes are linearly arrayed on the inner side wall of the outer tube 2-2, and the air supply holes are evenly distributed along the axial direction of the outer tube 2-2, corresponding to different height areas of the inner cavity of the hopper 1-1.

[0030] The outer surface of the inner tube 2-3 is provided with multiple through holes arranged in a ring array. The through holes are evenly distributed along the circumference and axial direction of the inner tube 2-3, covering the central area of ​​the inner cavity of the silo 1-1. The hollow tank 2-4 is teardrop-shaped, and its outer surface is provided with multiple through holes. The hollow tank 2-4 is located at the connection between the silo 1-1 and the discharge neck 1-3, corresponding to the material transition area at the bottom of the silo 1-1.

[0031] The aforementioned pulse air cannon 2-1 is connected to the annular pipe 2-5 via a branch pipe, thus connecting the air supply end to the annular pipe. The annular pipe 2-5 is arranged around the outer ring of the hopper 1-1, maintaining a fixed relative position with the outer wall of the hopper 1-1. The inner end face of the annular pipe 2-5 is connected to the end of each outer pipe 2-2, so that each outer pipe 2-2 is evenly distributed along the circumference of the hopper 1-1, achieving full circumferential coverage of the inner cavity of the hopper 1-1.

[0032] The opening 1-2 on the outer ring of the discharge neck 1-3 corresponds to the space at the bottom of the silo 1-1 and corresponds one-to-one with the arrangement position of the outer tube 2-2, adapting to the overall arrangement structure of the pipeline mechanism 2. The inner tube 2-3 extends along the central axis of the silo 1-1, its top end is fixedly connected to the end of the corresponding outer tube 2-2, and its bottom end is fixedly connected to the top of the hollow tank 2-4, so that the inner tube 2-3 and the hollow tank 2-4 are kept at the central axis position of the silo 1-1, realizing the synchronous arrangement of the central area and the circumferential area. The length of each outer tube 2-2 is adapted to the axial length of the silo 1-1, so that the air inlet on the outer tube 2-2 covers the entire height range of the inner cavity of the silo 1-1. Combined with the structure of the inner tube 2-3 and the hollow tank 2-4, a multi-directional arrangement structure is formed, adapting to the material distribution state in different areas of the powder tank.

[0033] The working process of the arch-breaking fluidization device of this utility model is described in detail below:

[0034] First, the pulse air cannon 2-1 outputs pulse airflow. The airflow enters the annular pipe 2-5 through the branch pipe. The airflow entering the annular pipe 2-5 is split along the annular cavity to each outer pipe 2-2. The check valve at the connection between the outer pipe 2-2 and the annular pipe 2-5 restricts the unidirectional flow of airflow to prevent material or airflow from flowing back into the annular pipe 2-5.

[0035] The airflow entering each outer pipe 2-2 is output to the inner cavity of the silo 1-1 through the air delivery holes arranged in a linear array on its inner side wall. The airflow force is applied to the material in the silo 1-1 along the circumference and axial direction, which breaks the bonding and bridging structure between material particles and simultaneously realizes the fluidization treatment of the material in the surrounding area of ​​the silo wall.

[0036] During the airflow pulse output process, the vibration damping cotton in the groove 1-5 absorbs the vibration energy generated by the outer pipe 2-2, reduces the transmission of pipeline vibration caused by pulse airflow to the silo 1-1, and reduces the impact on the powder tank mechanism 1 during the operation of the device.

[0037] Part of the airflow in the outer pipe 2-2, which is closest to the conveying port of the pulse air cannon 2-1, enters the inner pipe 2-3. The airflow entering the inner pipe 2-3 is output to the central area of ​​the inner cavity of the silo 1-1 through the through holes arranged in a ring on its outer surface. The airflow force is applied to the material in the center of the silo, breaking the arching structure of the material in the center area and realizing the fluidization of the material in the center area.

[0038] The remaining airflow in the inner tube 2-3 is conveyed downward to the hollow tank 2-4. The teardrop-shaped hollow tank 2-4 reduces the accumulation and retention of materials on its surface during operation. The airflow entering the hollow tank 2-4 is output through the through holes on its outer surface, applying airflow force to the material at the connection between the hopper 1-1 and the discharge neck 1-3, breaking the arching structure of the material in the discharge transition area at the bottom of the hopper, and preventing the material from being blocked at the inlet position of the discharge neck 1-3. The opening 1-2 of the outer ring of the discharge neck 1-3 is adapted to the airflow diffusion path at the bottom of the hopper, and works with the bottom airflow to achieve smooth conveying of materials in the discharge area.

[0039] Throughout the process, the circumferentially arranged outer pipe 2-2, the central inner pipe 2-3, and the bottom hollow tank 2-4 simultaneously output pulsed airflow, forming a multi-directional airflow field in the inner cavity of the silo 1-1, and simultaneously completing the arch breaking and fluidization treatment of materials in different areas of the silo.

[0040] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An arch-breaking fluidization device for preventing arching of materials in a powder tank, characterized in that: It includes a powder tank mechanism (1) and a pipeline mechanism (2) embedded in the inner cavity of the powder tank mechanism (1); The powder tank mechanism (1) includes a hopper (1-1), a discharge neck (1-3) fixed at the bottom port of the hopper (1-1), and 20-30 protrusions (1-4) fixed in a ring array on the outer surface of the hopper (1-1). The inner end face of each protrusion (1-4) is provided with a groove (1-5) that communicates with the inner cavity of the hopper (1-1). The outer ring surface of the discharge neck (1-3) is provided with 20-30 openings (1-2) in a ring array. The pipeline mechanism (2) includes a pulse air cannon (2-1), an annular pipe (2-5) connected to the delivery port of the pulse air cannon (2-1), and 20-30 outer pipes (2-2) arranged in an annular array and connected to the inner end face of the annular pipe (2-5). The outer pipe (2-2) closest to the delivery port of the pulse air cannon (2-1) is connected to an inner pipe (2-3) located in the center of the inner cavity of the hopper (1-1). The bottom end of the inner pipe (2-3) is connected to a hollow tank (2-4).

2. The arch-breaking fluidization device for preventing material arching in a powder tank according to claim 1, characterized in that: The outer tubes (2-2) are all fixed in a ring array within the grooves (1-5).

3. The arch-breaking fluidization device for preventing arching of materials in a powder tank according to claim 1, characterized in that: The inner cavities of the outer tube (2-2) and the annular tube (2-5) are interconnected, and check valves are installed at the connection points of the outer tube (2-2) and the annular tube (2-5).

4. The arch-breaking fluidization device for preventing material arching in a powder tank according to claim 1, characterized in that: The inner sidewall of the outer tube (2-2) is provided with multiple air supply holes arranged in a linear array.

5. The arch-breaking fluidization device for preventing arching of materials in a powder tank according to claim 1, characterized in that: The outer surface of the inner tube (2-3) has multiple through holes arranged in a ring array.

6. The arch-breaking fluidization device for preventing material arching in a powder tank according to claim 1, characterized in that: The hollow tank (2-4) is teardrop-shaped, and multiple through holes are provided on the outer surface of the hollow tank (2-4). The hollow tank (2-4) is located at the connection between the hopper (1-1) and the discharge neck (1-3).

7. The arch-breaking fluidization device for preventing material arching in a powder tank according to claim 1, characterized in that: The pulse air cannon (2-1) delivery port is connected to the annular pipe (2-5) via a branch pipe.

8. The arch-breaking fluidization device for preventing material arching in a powder tank according to claim 1, characterized in that: A layer of shock-absorbing cotton is adhered between the inner wall of the groove (1-5) and the outer surface of the outer tube (2-2) by an adhesive.

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