Protective device for breathable layer of air conveying chute

Abstract

The utility model relates to the technical field of ventilation layer protection, and discloses an air conveying chute ventilation layer protection device which comprises a mounting frame, an angle adjusting mechanism and a buffer plate. With the adoption of the structure, the buffer plate is arranged, so that materials entering from the feeding hole can be effectively received, and direct scouring of the inlet materials to the breathable layer at the feeding hole is avoided, so that the damage speed of the breathable layer is reduced, and the service life of the breathable layer is prolonged; and the inclination angle of the buffer plate can be flexibly and accurately adjusted according to the characteristics of materials with different particle sizes, so that the optimal buffer effect is achieved, the impact force of the materials on the breathable layer is further reduced, and the service time of the breathable layer is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of breathable layer protection technology, specifically to a breathable layer protection device for an air conveying chute. Background Technology

[0002] Air conveying chutes are widely used for conveying easily fluidized powdery materials such as cement and fly ash. They mainly consist of an upper shell, a lower shell, a permeable layer, and a blower. The lower and upper shells are joined to form a conveying channel. The permeable layer, located within the lower shell, divides the conveying channel into an upper air chamber (material layer) and a lower air chamber (air chamber layer). During operation, the blower blows pressurized air into the air chamber layer. The airflow passes through the permeable layer, causing the granular material above the permeable layer to remain suspended. Under the combined action of its own gravity and the airflow force, the material remains fluidized and flows slowly towards the downward-sloping end.

[0003] However, existing air conveying chutes have a significant problem during use: the material entering the chute directly erodes the permeable layer at the inlet. Due to the considerable impact force of the material entering the chute, and the continuous erosion of the permeable layer below the inlet, the damage rate of the permeable layer is accelerated, significantly reducing its service life. Once the permeable layer is damaged, air can enter the material layer or material can enter the air chamber, rendering the air conveying chute unusable. This not only increases equipment maintenance costs but also affects the continuity and stability of production. Utility Model Content

[0004] This utility model mainly provides a protective device for the permeable layer of an air conveying chute, which solves the problem mentioned in the background art that the feed inlet directly washes away the permeable layer at the feed inlet, accelerating the damage rate of the permeable layer and reducing its service life.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] An air conveying chute permeable layer protection device includes a mounting frame disposed within an upper housing below the feed inlet. The mounting frame is equipped with an angle adjustment mechanism, and the angle adjustment mechanism is equipped with a buffer plate. The buffer plate's tilt angle is adjusted by the angle adjustment mechanism. In use, when the air conveying chute is in operation, material enters from the feed inlet of the upper housing and first impacts the buffer plate, preventing direct scouring of the permeable layer. When conveying materials of different particle sizes, the angle adjustment mechanism adjusts the angle of the buffer plate to accommodate the buffering requirements of different particle sizes. After being buffered and dispersed on the buffer plate, the material slowly slides down onto the permeable layer and flows downwards along the chute under the action of airflow and its own gravity, completing the material conveying process. This structure, with its buffer plate, effectively receives materials entering through the feed inlet, preventing direct scouring of the permeable layer at the feed inlet by the incoming materials. This reduces the rate of breakage of the permeable layer and extends its service life. The inclination angle of the buffer plate can be flexibly and precisely adjusted according to the characteristics of materials with different particle sizes to achieve the best buffering effect, further reducing the impact of materials on the permeable layer and increasing its service life.

[0007] Furthermore, the angle adjustment mechanism includes two fixed frames mounted on the mounting bracket. An adjusting screw is rotatably connected to each of the two fixed frames, and an adjusting guide rod is positioned between the two fixed frames. An electric motor for driving the adjusting screw is mounted on the outer fixed frame. A moving block is threaded onto the adjusting screw. The buffer plate is rotatably connected to the inner fixed frame. One end of an adjusting rod is rotatably connected to the moving block, and the other end of the adjusting rod is rotatably connected to the buffer plate. Specifically, the electric motor can be fixedly connected to the fixed frame in any manner. With this structure, the electric motor drives the adjusting screw to rotate, and the moving block moves along the direction of the adjusting guide rod under the action of the adjusting screw and the adjusting guide rod. This, in turn, drives the buffer plate to rotate around the rotatable connection point with the inner fixed frame via the adjusting rod, thereby adjusting the angle of the buffer plate to adapt to the buffering requirements of materials with different particle sizes, and flexibly and precisely adjusting the tilt angle of the buffer plate.

[0008] Furthermore, the mounting bracket includes positioning platforms symmetrically arranged within the upper housing. Each positioning platform has a positioning groove, and a positioning frame is positioned within each groove. Two positioning frames are symmetrically arranged below the two fixed brackets. Specifically, the positioning frame can be inserted into the positioning groove through the outer opening of the upper housing. Specifically, after the positioning frame is installed in the positioning groove, its sidewall can be detachably connected and fixed to the positioning platform using bolts; that is, the sidewalls of the positioning frame and the positioning platform have corresponding bolt holes. Specifically, the lower side of the fixed bracket can be detachably connected to the positioning frame using bolts. With this structure, the cooperation between the positioning frame and the positioning groove can stably install the fixed bracket within the upper housing, ensuring the stability and reliability of the angle adjustment mechanism installation, and facilitating subsequent disassembly, assembly, and maintenance of related structures.

[0009] Furthermore, the buffer plate includes a lower plate and an upper plate. The lower plate is rotatably connected to the inner fixing frame and to the other end of the adjusting rod. Multiple insertion rods are provided on the lower side of the upper plate, and insertion holes for the insertion rods are provided on the lower plate. A limit block is provided after the insertion rod passes through the insertion hole, and a spring is sleeved on the insertion rod between the lower and upper plates. Specifically, multiple guide grooves can also be formed on the upper plate, and these guide grooves are distributed in a fan shape, thereby effectively dispersing and guiding the material falling onto the upper plate, preventing a large amount of material from impacting the breathable layer at the same point. With this structure, when the buffer plate is impacted by material, the upper plate can move relative to the lower plate and compress the spring, playing a buffering and energy-absorbing role, further reducing the impact force of the material on the breathable layer, and facilitating the disassembly and replacement of the buffer plate.

[0010] Furthermore, a cover is detachably connected to the outer end of the upper housing. This structure facilitates the installation, maintenance, and repair of components such as the angle adjustment mechanism and the buffer plate. When internal components need to be operated, the cover can be removed and then reinstalled after the operation is completed, making it convenient and quick.

[0011] Beneficial effects: This structure, with its buffer plate, effectively receives materials entering through the feed inlet, preventing direct scouring of the permeable layer at the feed inlet by the incoming materials. This reduces the rate of breakage of the permeable layer and extends its service life. The tilt angle of the buffer plate can be flexibly and precisely adjusted according to the characteristics of materials with different particle sizes to achieve the best buffering effect, further reducing the impact of materials on the permeable layer and increasing its service life. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the lower plate body from an oblique angle in this embodiment;

[0013] Figure 2 This is a schematic diagram of the upper plate body from an oblique angle in this embodiment;

[0014] Figure 3 This is a cross-sectional view of the upper shell in this embodiment.

[0015] Reference numerals in the attached drawings: mounting bracket 1, positioning platform 101, positioning frame 102, angle adjustment mechanism 2, fixing frame 201, adjusting screw 202, adjusting guide rod 203, motor 204, moving block 205, adjusting rod 206, buffer plate 3, lower plate 301, upper plate 302, insertion rod 303, limit block 304, cover 4. Detailed Implementation

[0016] The following will provide a more detailed description of the technical solution of the air conveying chute permeable layer protection device of this utility model, with reference to the embodiments.

[0017] 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.

[0018] As shown in Figures 1, 2, and 3, an air conveying chute permeable layer protection device of this embodiment includes a mounting frame 1 disposed within the upper housing at a position corresponding to the lower part of the feed inlet. An angle adjustment mechanism 2 is disposed on the mounting frame 1, and a buffer plate 3 is disposed on the angle adjustment mechanism 2. The buffer plate 3 adjusts its tilt angle by being driven by the angle adjustment mechanism 2. The angle adjustment mechanism 2 includes two fixed frames 201 disposed on the mounting frame 1, with an adjusting screw 202 rotatably connected to the two fixed frames 201, and an adjusting guide rod 203 disposed between the two fixed frames 201. A motor 204 for driving the adjusting screw 202 to rotate is disposed on the outer fixed frame 201. A moving block 205 is threadedly connected to the adjusting screw 202. The buffer plate 3 is rotatably connected to the inner fixed frame. One end of an adjusting rod 206 is rotatably connected to the moving block 205, and the other end of the adjusting rod 206 is rotatably connected to the buffer plate 3. The mounting bracket 1 includes positioning platforms 101 symmetrically arranged within the upper housing. Positioning slots are formed on the positioning platforms 101, and positioning frames 102 are disposed within the positioning slots. Two positioning frames 102 are symmetrically arranged below the two fixing frames 201. Specifically, the positioning frames 102 can be inserted into the positioning slots through the outer opening of the upper housing. The buffer plate 3 includes a lower plate 301 and an upper plate 302. The lower plate 301 is rotatably connected to the inner fixing frame and rotatably connected to the other end of the adjusting rod 206. Multiple insertion rods 303 are provided on the lower side of the upper plate 302. The lower plate 301 has insertion holes for the insertion rods 303. A limit block 304 is provided after the insertion rod 303 passes through the insertion hole. A spring is sleeved on the insertion rod 303 between the lower plate 301 and the upper plate 302. Specifically, multiple guide grooves can be formed on the upper plate 302, and these guide grooves are distributed in a fan shape, which can effectively disperse and guide the material falling onto the upper plate 302, avoiding the impact of a large amount of material falling on the same point of the breathable layer. A cover 4 is detachably connected to the outer end of the upper shell.

[0019] In use, when using the air conveying chute, the material enters from the feed inlet of the upper shell and first impacts the buffer plate 3, preventing the material from directly scouring the permeable layer. When conveying materials of different particle sizes, the angle of the buffer plate 3 can be adjusted by the angle adjustment mechanism 2 to adapt to the buffering requirements of different particle sizes. After being buffered and dispersed on the buffer plate 3, the material slowly slides down onto the permeable layer and flows downward along the chute under the action of airflow and its own gravity, completing the material conveying process. With this structure, by setting the buffer plate 3, the material entering from the feed inlet can be effectively received, preventing the inlet material from directly scouring the permeable layer at the feed inlet, thereby reducing the damage rate of the permeable layer and extending its service life. The tilt angle of the buffer plate 3 can be flexibly and precisely adjusted according to the characteristics of different particle sizes of materials to achieve the best buffering effect, further reducing the impact force of the material on the permeable layer and increasing the service life of the permeable layer.

[0020] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art 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 appended claims and their equivalents.

Claims

1. A protective device for the permeable layer of an air conveying chute, characterized in that: The device includes a mounting bracket located below the feed inlet and inside the upper housing. The mounting bracket is equipped with an angle adjustment mechanism and a buffer plate. The buffer plate adjusts the tilt angle by being driven by the angle adjustment mechanism.

2. The air conveying chute permeable layer protection device according to claim 1, characterized in that: The angle adjustment mechanism includes two fixed frames mounted on the mounting bracket, an adjusting screw rotatably connected to each of the two fixed frames, and an adjusting guide rod disposed between the two fixed frames. An electric motor for driving the adjusting screw to rotate is disposed on the outer fixed frame. A moving block is threadedly connected to the adjusting screw. The buffer plate is rotatably connected to the inner fixed frame. One end of an adjusting rod is rotatably connected to the moving block, and the other end of the adjusting rod is rotatably connected to the buffer plate.

3. The air conveying chute permeable layer protection device according to claim 2, characterized in that: The mounting bracket includes positioning platforms symmetrically arranged inside the upper housing. Positioning slots are provided on the positioning platforms, and positioning frames are provided in the positioning slots. The two positioning frames are symmetrically arranged on the lower side of the two fixing frames.

4. The air conveying chute permeable layer protection device according to claim 2, characterized in that: The buffer plate includes a lower plate and an upper plate. The lower plate is rotatably connected to the inner fixing frame and rotatably connected to the other end of the adjusting rod. Multiple insertion rods are provided on the lower side of the upper plate. Insertion holes for the insertion rods are provided on the lower plate. Limit blocks are provided after the insertion rods pass through the insertion holes. Springs are sleeved on the insertion rods between the lower plate and the upper plate.

5. The air conveying chute permeable layer protection device according to claim 1, characterized in that: The outer end of the upper housing is detachably connected to a cover.

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