A deceleration flow guide

Abstract

The application belongs to the technical field of material conveying devices, and discloses a speed reduction flow guide device, which comprises a material conveying belt matched with a feeding port of a stirring device, and further comprises a speed reduction flow guide assembly arranged at a discharging end of the material conveying belt; the speed reduction flow guide assembly comprises a hollow main frame body, and arc-shaped guide plates are fixedly installed on the inner walls of the left and right sides of the main frame body and close to the material conveying belt; through the structural cooperation of the arc-shaped guide plates, V-shaped guide grooves and stepped buffer plates, the arc-shaped guide plates are matched with the material throwing track of the belt to realize stable material receiving, the multi-stage stepped structure is relied on to gradually dissipate the kinetic energy of the falling aggregate, the impact speed of the aggregate entering the stirring device is greatly reduced, the repeated impact load borne by the stirring blades, the lining plate and the transmission structure is effectively relieved, and the problems of the traditional straight falling type feeding, such as large impact, easy equipment wear and tear and fatigue damage of the transmission system, are solved.

Description

Technical Field

[0001] This invention belongs to the technical field of material conveying devices, specifically a deceleration and flow guiding device. Background Technology

[0002] In the conventional operation process of a stabilized soil mixing production line, aggregate materials are mainly transferred and fed directly by conveyor belts. After being metered and conveyed by the conveyor belt, the materials fall freely from the end of the belt into the mixing equipment under their own weight. This is the conventional feeding structure commonly used in stabilized soil mixing equipment.

[0003] For example, a stabilized soil mixing device with publication number CN220499555U includes an aggregate bin, an aggregate conveyor, a water supply system, multiple powder metering mechanisms, a mixing mechanism, a finished product bin, and a finished product conveyor. The aggregate bin stores aggregates. One end of the aggregate conveyor is connected to the outlet of the aggregate bin, and the other end extends to the inlet of the mixing mechanism. The water supply system is connected to the mixing mechanism. The multiple powder metering mechanisms are arranged on the mixing mechanism, with their outlets facing the inlet of the mixing mechanism. The finished product conveyor is connected at one end to the outlet of the mixing mechanism and extends to the inlet of the finished product bin. Through multiple different powder metering mechanisms, various powders can be metered, thus enabling the production of both ordinary stabilized crushed stone and large-diameter stabilized crushed stone.

[0004] However, in the actual production process, the existing straight-through feeding structure causes the material to fall directly at high speed after being thrown out by the belt. Without a buffer deceleration structure to dissipate the kinetic energy of the material, the high-speed aggregate continuously impacts the blades, liners, and transmission components inside the mixing equipment. Long-term repeated impacts can easily cause wear and aging of components. At the same time, it will create continuous fatigue loads on the transmission system such as the reducer and motor, shortening the service life of the entire machine. In addition, the traditional feeding method always maintains a centralized single-stream material flow state. When the material falls into the mixer, the landing point is concentrated and the distribution range is small. The initial contact area between the aggregate and cementitious materials such as cement and lime is limited, which can easily lead to local material accumulation and uneven mixing. This significantly reduces the quality of the mixing operation and the overall mixing efficiency, and cannot meet the requirements of continuous production of high-standard stabilized soil. Summary of the Invention

[0005] To address the problems mentioned in the background art, the present invention provides a deceleration and flow guiding device.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a deceleration and flow guiding device, comprising a material conveying belt that cooperates with the feeding port of a mixing device, and further comprising: a deceleration and flow guiding component disposed at the discharge end of the material conveying belt;

[0007] The deceleration and flow guiding assembly includes a hollow main frame. Arc-shaped guide plates are fixedly installed on the inner walls of the left and right sides of the main frame near the material conveyor belt. A stepped buffer plate is fixedly assembled inside the main frame. A material distribution frame is fixedly connected to the bottom end of the stepped buffer plate. Several horizontally arranged inclined guide plates are fixedly installed inside the material distribution frame. A rotating shaft is rotatably assembled at the lower end of the inclined guide plate. An adjustable inclined plate is assembled at the bottom end of the rotating shaft.

[0008] The adjustable inclined plate is equipped with an external linkage visual adjustment component. The external linkage visual adjustment component includes a protruding crossbar fixedly connected to the end of the rotating shaft. The end face of the material distribution frame is provided with several through holes. The protruding crossbar passes through the through holes and is fitted with a clearance between the through holes. An outer cylinder is fixedly sleeved on the outer end of the protruding crossbar extending out of the through holes. Hand grip protrusions are symmetrically fixed on the outer end of the outer cylinder.

[0009] Preferably, a locking lug is fixedly provided on the outer side of one of the hand grip protrusions, and multiple sets of annular locking holes are provided around the end face of the material distribution frame. The locking holes are aligned and fitted with the locking lugs, and are threadedly locked and fixed by locking bolts. The locking holes are evenly distributed in annular shape on the end face of the material distribution frame, and each locking lug has a threaded hole that matches the locking bolt inside, for multi-angle position fixing.

[0010] Preferably, a laser angle calibration lamp is fixedly installed on the outer end face of one of the hand grip protrusions. The laser beam emitted by the laser angle calibration lamp is projected onto the outer end face of the material distribution frame, and the tilt angle of the laser beam is consistent with the tilt angle of the corresponding adjustable inclined plate. This is used to achieve visual calibration of the tilt angle of the adjustable inclined plate, thereby adapting to the operation requirements of the feeding port of the mixing equipment of different specifications and sizes.

[0011] Preferably, the outer side of the deceleration and flow guiding assembly is detachably equipped with a closed dustproof protection mechanism, which includes a detachable dust cover installed on the outside of the main frame.

[0012] Preferably, the size of the detachable dust cover is adapted to the outer contour of the main frame, and curtains are symmetrically fixed to the left and right ends of the detachable dust cover.

[0013] Preferably, a number of rectangular arrayed insertion rods are fixedly provided on the lower side of the horizontal section of the detachable dust cover, and a number of rectangular arrayed insertion holes are correspondingly opened on the upper surface of the main frame. The insertion rods and insertion holes are inserted into each other to realize the positioning and installation of the detachable dust cover.

[0014] Preferably, the rotating shaft is rotatably mounted between the inclined guide plate and the adjustable inclined plate in a horizontal direction, and the upper and lower ends of the rotating shaft are respectively assembled and connected to the inclined guide plate and the adjustable inclined plate.

[0015] Preferably, the protruding crossbar and the rotating shaft are an integral linkage structure, and the protruding crossbar can rotate freely through the through hole and the gap between the protruding crossbar and the through hole is matched.

[0016] Preferably, the arc-shaped guide plate has multiple sets of horizontally spaced V-shaped guide grooves on its end face. The stepped buffer plate is correspondingly located on the discharge side of the arc-shaped guide plate away from the material conveyor belt and is connected to the discharge end of the V-shaped guide groove. It is used to divert and guide the material flowing through the surface of the arc-shaped guide plate, thereby regulating the material flow trajectory.

[0017] Preferably, the stepped buffer plate is arranged in a multi-level stepped flow guiding structure along the material flow path. Each stepped buffer plate is composed of a horizontal section and an inclined section. The kinetic energy of the falling material is continuously dissipated and converted through the internal friction of the material and the friction of the plate surface, so as to realize the gradual reduction of the falling speed of the material and greatly reduce the impact load of the material on the downstream distribution structure and the mixing equipment.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0019] This invention utilizes a combination of an arc-shaped guide plate, a V-shaped guide groove, and a stepped buffer plate to achieve stable material reception by matching the material throwing trajectory of the belt with the arc-shaped guide plate. The multi-stage stepped structure dissipates the kinetic energy of the falling aggregate step by step, significantly reducing the impact speed of the aggregate entering the mixing equipment. This effectively alleviates the repeated impact loads on the mixing blades, liners, and transmission structure, solving the problems of large impact, easy wear and tear, and easy fatigue damage to the transmission system in traditional direct-fall feeding.

[0020] This invention, through the combination of a material distribution frame, an inclined guide plate, and an adjustable inclined plate, disperses the traditional centralized single-stream material flow into a uniform material curtain, significantly increasing the distribution area of ​​aggregates inside the mixing equipment, increasing the initial contact range between aggregates and cementitious materials, effectively improving the defects of concentrated material drop and small contact area, and enhancing the overall mixing uniformity and mixing operation efficiency.

[0021] This invention achieves visual calibration of the material distribution angle and precise locking at multiple levels by combining an externally linked visual adjustment component, locking lugs, locking holes, and a closed dustproof protection mechanism. It is adaptable to different material conditions and feeding equipment of different specifications. At the same time, the fully enclosed dustproof structure prevents dust from overflowing, ensuring both equipment operation stability and the cleanliness of the working environment. This solves the industry problems of poor adaptability, low adjustment accuracy, and serious dust pollution caused by traditional flow guiding structures. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the material conveyor belt of the present invention;

[0023] Figure 2This is a schematic diagram of the material conveying belt and the deceleration and flow guiding assembly in their coordinated state according to the present invention;

[0024] Figure 3 This is an enlarged structural schematic diagram of the deceleration and flow guiding component of the present invention;

[0025] Figure 4 This is a schematic diagram of the internal structure of the material distribution frame of the present invention;

[0026] Figure 5 This is a schematic diagram of the adjustable inclined plate structure of the present invention;

[0027] Figure 6 For the present invention Figure 5 A magnified schematic diagram of the partial truncation at point A in the middle.

[0028] In the diagram: 1. Material conveyor belt; 2. Speed ​​reduction and flow guiding assembly; 200. Main frame; 201. Arc-shaped guide plate; 202. V-shaped guide groove; 203. Stepped buffer plate; 204. Material distribution frame; 205. Inclined guide plate; 206. Rotating shaft; 207. Adjustable inclined plate; 3. External linkage visual adjustment assembly; 300. Protruding crossbar; 301. Through hole; 302. Outer cylinder; 303. Hand grip protrusion; 304. Laser angle calibration light; 4. Enclosed dustproof protection mechanism; 400. Removable dust cover; 401. Curtain; 402. Insert rod; 403. Insertion hole; 5. Locking lug; 6. Locking hole. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] like Figures 1 to 6 As shown, the present invention provides a deceleration and flow guiding device, including a material conveying belt 1 that cooperates with the feeding port of a mixing device, and further including a deceleration and flow guiding component 2 arranged at the discharge end of the material conveying belt 1. The deceleration and flow guiding component 2 includes a hollow main frame body 200. Arc-shaped guide plates 201 are fixedly installed on the inner walls of the left and right sides of the main frame body 200 near the material conveying belt 1. A stepped buffer plate 203 is fixedly assembled inside the main frame body 200. A material distribution frame 204 is fixedly connected to the bottom end of the stepped buffer plate 203. Several horizontally arranged inclined guide plates 205 are fixedly installed inside the material distribution frame 204. A rotating shaft 206 is rotatably assembled at the lower end of the inclined guide plate 205. An adjustable inclined plate 207 is assembled at the bottom end of the rotating shaft 206.

[0031] Using the above scheme: This device constructs a complete material deceleration and diversion channel by combining a multi-level structure of arc-shaped guide plate 201, stepped buffer plate 203, inclined guide plate 205 and adjustable inclined plate 207, which effectively reduces the rigid impact of materials on the mixing equipment and greatly improves the uniformity of material distribution. The stepped buffer plate 203 is not a simple step, but is designed to match the throwing trajectory of the specific arc-shaped guide plate 201, and its end is connected to the material distribution frame 204 to form a closed loop of deceleration and uniform distribution functions.

[0032] like Figures 2 to 6 As shown, the adjustable inclined plate 207 is equipped with an external linkage visual adjustment component 3. The external linkage visual adjustment component 3 includes a protruding crossbar 300 fixedly connected to the end of the rotating shaft 206. The end face of the material distribution frame 204 has several through holes 301. The protruding crossbar 300 passes through the through holes 301 and is clearance-fitted with the through holes 301. The outer end of the protruding crossbar 300 extending out of the through holes 301 is fixedly sleeved with an outer cylinder 302. The outer end of the outer cylinder 302 is symmetrically fixedly provided with a hand grip protrusion 303. One of the hand grip protrusions 303 has a locking lug 5 fixedly provided on its outer side. The end face of the material distribution frame 204 is provided with multiple sets of annularly spaced locking holes 6. The locking lugs 5 are aligned and fitted together, and are locked in place by locking bolts. Locking holes 6 are evenly distributed in a ring on the end face of the distribution frame 204. Each locking lug 5 has a threaded hole that matches the locking bolt, which is used to fix the position at multiple angles. A laser angle calibration lamp 304 is fixedly installed on the outer end face of one of the hand gripping lugs 303. The laser beam emitted by the laser angle calibration lamp 304 is projected onto the outer end face of the distribution frame 204, and the tilt angle of the laser beam is consistent with the tilt angle of the corresponding adjustable inclined plate 207, which is used to achieve visual calibration of the tilt angle of the adjustable inclined plate 207, thereby adapting to the operation requirements of the feeding port of the mixing equipment of different specifications and sizes.

[0033] The above solution is adopted: the laser angle calibration lamp 304 is linked to the rotating shaft to rotate synchronously, realizing the external visual mapping of the actual tilt angle of the adjustable inclined plate 207. This solves the technical problem of "blind adjustment" in traditional adjustment and the need to stop the machine for observation. Through the linkage adjustment of the external linkage visual adjustment component 3, laser visual calibration, and multi-level locking positioning, the precise adjustment of the material distribution angle is achieved.

[0034] like Figures 1 to 6As shown, a closed dustproof protection mechanism 4 is detachably mounted on the outside of the deceleration guide assembly 2. The closed dustproof protection mechanism 4 includes a detachable dust cover 400 covering the outside of the main frame 200. The size of the detachable dust cover 400 is adapted to the outer contour of the main frame 200. The left and right ends of the detachable dust cover 400 are symmetrically fixedly connected with curtains 401. Several rectangular array of insertion rods 402 are fixedly installed on the lower side of the horizontal section of the detachable dust cover 400. Several rectangular array of insertion holes 403 are correspondingly opened on the upper surface of the main frame 200. The insertion rods 402 and the insertion holes 403 are correspondingly inserted and engaged to realize the positioning and installation of the detachable dust cover 400. The rotating shaft 206 is rotatably mounted between the inclined guide plate 205 and the adjustable inclined plate 207 in the horizontal direction. The upper and lower ends of the rotating shaft 206 are respectively assembled and docked with the inclined guide plate 205 and the adjustable inclined plate 207, protruding outwards. The crossbar 300 and the rotating shaft 206 are integrated linkage structures. The protruding crossbar 300 can rotate freely through the through hole 301 and is matched with the gap of the through hole 301. The end face of the arc guide plate 201 has multiple sets of horizontally equally spaced V-shaped guide grooves 202. The stepped buffer plate 203 is correspondingly set on the discharge side of the arc guide plate 201 away from the material conveying belt 1 and is connected to the discharge end of the V-shaped guide groove 202. It is used to divert and guide the material flowing through the surface of the arc guide plate 201, thereby regulating the material flow trajectory. The stepped buffer plate 203 is arranged in a multi-level stepped flow guiding structure along the material flow path. Each stepped buffer plate 203 is composed of a horizontal section and an inclined section. Through the internal friction of the material and the friction of the plate surface, the kinetic energy of the falling material is continuously dissipated and converted, realizing the gradual reduction of the falling speed of the material, and greatly reducing the impact load of the material on the rear material distribution structure and the mixing equipment.

[0035] The above solution is adopted: the curtain 401 is a flexible rubber strip or wear-resistant canvas curtain, the upper end of which is fixedly connected to the left and right ends of the detachable dust cover 400, and the lower end hangs freely to cover the side opening of the main frame 200. Through the fully enclosed and sealed protective structure of the closed dust protection mechanism 4, combined with the optimized design of the internal flow guiding, buffering and linkage adjustment structure, it can achieve material deceleration, uniform material distribution and adjustable operation, and also has the function of dust prevention and dust suppression, thus solving the technical problems of large impact and large amount of dust in traditional feeding devices in an all-round way.

[0036] Working principle and usage process of this invention:

[0037] In actual operation, the material conveyor belt 1 completes the material conveying operation. The material is stably thrown out from the discharge end of the material conveyor belt 1 and then enters the deceleration and flow guiding assembly 2 to complete the flow guiding, deceleration, and uniform distribution operation. The hollow main frame 200 provides stable installation support and material flow cavity for all flow guiding and buffering structures inside the device. The material first contacts the arc-shaped guide plate 201 installed on the inner side of the main frame 200. Multiple sets of V-shaped guide grooves 202 arranged horizontally and evenly on the surface of the arc-shaped guide plate 201 divert and guide the scattered material thrown out, thereby regulating the material flow trajectory and allowing the material to be conveyed to the rear structure in a stable state. The concentrated single material flow is regulated into multiple parallel material flows, and the movement direction of the aggregate is changed in an orderly manner, so that the aggregate smoothly transitions from a horizontal throwing state to a downward guiding state. After being guided by the V-shaped guide grooves 202, the material is smoothly conveyed to the stepped buffer plate 203 connected to the discharge side of the arc-shaped guide plate 201. The stepped buffer plates 203 are arranged in multiple stages along the material flow path. 03 Relying on its integrated structure of horizontal and inclined sections, it continuously receives falling materials. The materials will briefly spread out and linger at the horizontal section of the stepped buffer plate 203, and then flow smoothly along the inclined section by gravity to the next level of structure. During the continuous flow of materials through the multi-level stepped buffer plates 203, the internal friction of the materials and the friction between the materials and the plate surface will continuously dissipate and convert the kinetic energy of the falling materials, gradually reducing the falling speed of the materials, effectively reducing the impact load of the materials on the downstream distribution structure and mixing equipment. The materials that have completed the deceleration and buffering will be stably transported to the distribution frame 204 connected to the bottom of the stepped buffer plate 203. Multiple sets of inclined guide plates 205 horizontally arranged inside the distribution frame 204 will perform secondary straightening and guiding of the materials. The lower end of the inclined guide plate 205 is connected to the adjustable inclined plate 207 through the vertically assembled rotating shaft 206. The rotating shaft 206 can rotate flexibly, thereby driving the adjustable inclined plate 207 at the bottom to adjust the tilt angle synchronously, thereby changing the diffusion range and landing point of the final material discharge.

[0038] The angle adjustment of the adjustable ramp 207 is accomplished through the external linkage visual adjustment component 3. The through hole 301 on the end face of the material distribution frame 204 provides a through-assembly space for the protruding crossbar 300. The clearance fit structure ensures that the protruding crossbar 300 can rotate flexibly. The integrated linkage structure of the protruding crossbar 300 rotates synchronously with the rotating shaft 206, thereby driving the outer cylinder 302 and the hand grip protrusions 303 symmetrically arranged at both ends of the outer cylinder 302 to move synchronously, realizing the linkage between external manual adjustment and internal ramp angle adjustment. During the angle adjustment process, the laser angle calibration lamp 304 installed on the outside of the hand grip protrusion 303 continuously emits a laser beam, which is projected onto the outer end of the material distribution frame 204. On the surface, the tilt angle of the laser beam is synchronously matched with the real-time tilt angle of the adjustable inclined plate 207. The operator can intuitively judge the adjustment angle of the inclined plate based on the laser projection trajectory and complete the visual calibration of the tilt angle of the adjustable inclined plate 207. This adapts to the operation requirements of the feeding port of the mixing equipment of different specifications and sizes. After the angle is adjusted, the locking lug 5 on the outside of the hand-held protrusion 303 is aligned and fitted with the locking holes 6 distributed in an annular pattern on the end face of the material distribution frame 204. The operator uses the locking bolt to pass through the locking hole 6 and the locking lug 5 to complete the threaded locking and fixing. Multiple sets of annularly arranged locking holes 6 can match different adjustment angles of the adjustable inclined plate 207 to achieve multi-angle precise positioning and locking.

[0039] During the overall operation of the device, the detachable enclosed dustproof protection mechanism 4 on the outside of the main frame 200 plays a full role in dust protection. The detachable dust cover 400, which is adapted to the external contour of the main frame 200, completely covers the internal working structure of the device. The curtains 401 fixed at both ends of the detachable dust cover 400 can seal the structural gaps and prevent dust from overflowing from the side. The plug rods 402 arranged in a rectangular array at the bottom of the detachable dust cover 400 are plugged into the plug holes 403 on the upper surface of the main frame 200 to stably achieve the positioning and installation of the dust cover. At the same time, the plug-in structure can achieve quick disassembly and assembly, which is convenient for internal maintenance and cleaning operations.

[0040] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0041] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A deceleration and flow guiding device, comprising a material conveying belt (1) that cooperates with the feeding port of a mixing device, characterized in that: Also includes: A deceleration guide assembly (2) is installed at the discharge end of the material conveyor belt (1). The deceleration and flow guiding assembly (2) includes a hollow main frame body (200). Arc-shaped guide plates (201) are fixedly installed on the inner walls of the left and right sides of the main frame body (200) near the material conveying belt (1). A stepped buffer plate (203) is fixedly assembled inside the main frame body (200). A material distribution frame (204) is fixedly connected to the bottom end of the stepped buffer plate (203). Several horizontally arranged inclined guide plates (205) are fixedly installed inside the material distribution frame (204). A rotating shaft (206) is rotatably assembled at the lower end of the inclined guide plate (205). An adjustable inclined plate (207) is assembled at the bottom end of the rotating shaft (206). The adjustable inclined plate (207) is equipped with an external linkage visual adjustment component (3). The external linkage visual adjustment component (3) includes a protruding crossbar (300) fixedly connected to the end of the rotating shaft (206). The end face of the material distribution frame (204) is provided with several through holes (301). The protruding crossbar (300) is correspondingly connected to the through holes (301) and is clearance-fitted with the through holes (301). The outer end of the protruding crossbar (300) extending out of the through holes (301) is fixedly sleeved with an outer cylinder (302). The outer end of the outer cylinder (302) is symmetrically fixedly provided with a hand grip protrusion (303).

2. The deceleration and flow guiding device according to claim 1, characterized in that: One of the hand grip protrusions (303) is fixedly provided with a locking lug (5) on its outer side. The end face of the material distribution frame (204) is provided with multiple sets of annular locking holes (6) distributed at equal intervals. The locking holes (6) are aligned and fitted with the locking lugs (5) and are locked by locking bolts. The locking holes (6) are evenly distributed in annular shape on the end face of the material distribution frame (204). Each locking lug (5) is provided with a threaded hole that matches the locking bolt.

3. The deceleration and flow guiding device according to claim 1, characterized in that: A laser angle calibration lamp (304) is fixedly installed on the outer end face of one of the hand grip protrusions (303). The laser beam emitted by the laser angle calibration lamp (304) is projected onto the outer end face of the material distribution frame (204), and the tilt angle of the laser beam is consistent with the tilt angle of the corresponding adjustable inclined plate (207), which is used to achieve visual calibration of the tilt angle of the adjustable inclined plate (207).

4. The deceleration and flow guiding device according to claim 1, characterized in that: The deceleration guide assembly (2) is detachably equipped with a closed dust protection mechanism (4) on its outer side, which includes a detachable dust cover (400) covering the outside of the main frame body (200).

5. The deceleration and flow guiding device according to claim 4, characterized in that: The size of the detachable dust cover (400) is adapted to the outer contour of the main frame (200), and the left and right ends of the detachable dust cover (400) are symmetrically fixed with curtains (401).

6. The deceleration and flow guiding device according to claim 5, characterized in that: The detachable dust cover (400) has several rectangular arrayed insertion rods (402) fixedly installed on the lower side of the horizontal section. The upper end face of the main frame (200) has several rectangular arrayed insertion holes (403) correspondingly opened. The insertion rods (402) and insertion holes (403) are inserted and matched to realize the positioning and installation of the detachable dust cover (400).

7. The deceleration and flow guiding device according to claim 1, characterized in that: The rotating shaft (206) is rotatably mounted between the inclined guide plate (205) and the adjustable inclined plate (207) in the horizontal direction. The upper and lower ends of the rotating shaft (206) are respectively assembled and connected to the inclined guide plate (205) and the adjustable inclined plate (207).

8. The deceleration and flow guiding device according to claim 1, characterized in that: The protruding crossbar (300) and the rotating shaft (206) are an integrated linkage structure. The protruding crossbar (300) passes through the through hole (301) and can rotate freely and is matched with the gap of the through hole (301).

9. The deceleration and flow guiding device according to claim 1, characterized in that: The arc-shaped guide plate (201) has multiple sets of horizontally spaced V-shaped guide grooves (202) on its end face. The stepped buffer plate (203) is located on the discharge side of the arc-shaped guide plate (201) away from the material conveying belt (1) and is connected to the discharge end of the V-shaped guide groove (202).

10. The deceleration and flow guiding device according to claim 1, characterized in that: The stepped buffer plate (203) is arranged in a multi-level stepped flow guiding structure along the material flow path. Each stepped buffer plate (203) is composed of a horizontal section and an inclined section.

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