Flow guide type automatic dust falling scraper-trough conveyer

Abstract

The utility model discloses a flow guide type automatic dust fall scraper-trough conveyer, which relates to the technical field of environmental protection engineering, and comprises a primary buffer flow guide module, a secondary buffer flow guide module and a positive pressure dust filtration module, the first-stage buffer flow guide module and the second-stage buffer flow guide module are both provided with flow guide holes which are communicated with each other, the hole diameter of the flow guide hole of the first-stage buffer flow guide module is larger than that of the second-stage buffer flow guide module, and the bottom of one side wall of the second-stage buffer flow guide module is provided with a side wall through hole communicated with the positive pressure dust filtering module; a first flexible check block is arranged at the side wall through hole, a dust removal assembly is arranged in the positive pressure dust filtering module, a side wall discharging port is formed in the side, away from the second-stage buffering and flow guiding module, of the positive pressure dust filtering module, and a second flexible check block is arranged at the side wall discharging port. According to the utility model, a two-stage buffering design form is adopted. The automatic dust collecting and falling function is achieved, meanwhile, the sealing and wear-resisting structure configuration is considered, and the phenomena of material flushing and dust raising are restrained.

Description

Technical Field

[0001] The utility model relates to the technical field of environmental protection engineering, and more specifically to the technical field of a diversion type self-dust-falling chute. Background Art

[0002] During the operation of a cement factory, the problem of dust treatment in the unloading, conveying, and transferring processes of bulk and powdered materials has always been the focus and difficulty in engineering design work. In general design, dust removal equipment such as dust collectors with sufficient air volume will be configured according to process requirements. However, during the operation of the system, problems such as poor dust collection effect and serious dust emission often occur, which in turn lead to low production efficiency, easy damage to equipment, and environmental pollution.

[0003] Currently, many engineering projects have proposed solutions to the problem of dust treatment during the conveying and transferring of bulk materials. For example, adding windshields (curtains) at key positions to reduce the air leakage of the system, modifying the structure of non-standard parts, or even the equipment and its layout to reduce the occurrence of dust, etc. However, these methods are all upgrades or modifications within the current mature system framework. It is very difficult to achieve a perfect balance in the mutual cooperation between non-standard parts. Especially the configuration difficulty of the dust collection system is very high. Many factors make it difficult to stably improve the dust collection efficiency and actual operation rate of the entire system.

[0004] As a connecting component between equipment, non-standard parts play a particularly crucial role in controlling the dust of the entire system. Taking a standard limestone crushing and unloading system as an example, the non-standard parts it includes mainly are the leakage chute of the apron feeder, the feeding chute of the crusher, the return ash chute of the supporting dust collector, the dust collection air duct, and the fan exhaust air duct, etc. It can be found that the number of non-standard parts in this system is relatively large, and each non-standard component is a potential air leakage point and a dust generation point. At the same time, in most cases, the design of these non-standard parts of the crushing system is relatively complex, and it is necessary to take into account a good dust collection effect while ensuring the normal operation of the system. From this perspective, whether the cooperation effect between each non-standard part is excellent directly determines whether the entire system operates smoothly. Among them, the large-flow unloading point represented by the feeding chute of the crusher has a fast feeding speed, a large accumulation of powder materials, and a strong flushing effect, which is the "hard-hit area" for dust collection in the entire system.

[0005] To sum up, the cooperation degree between other non-standard parts of the entire system, especially the dust collection air ducts of the dust collector, is poor, which is not conducive to improving the dust collection efficiency of the system. And the layout of the dust collection air duct is often restricted by the space where it is located, resulting in insufficient height or even horizontal layout, and the phenomenon of ash accumulation occurs from time to time. Unreasonable design of the dust collection system usually brings a counter-effect, and the dust emission does not decrease but increases, resulting in a large amount of dust generated during the conveying and transferring of materials.

[0006] In addition, as the key area for centralized unloading, the material passes through here at a high speed, and a large amount of powder accumulates during the process, which easily causes material surging and dust generation, reducing the operating efficiency of the system. Moreover, the unreasonable design of the chute structure is prone to material blockage, severe wear of the chute, and the occurrence of air leakage, dust leakage, and material leakage, generating a large amount of dust, further increasing the load on the dust collection system and causing more serious environmental pollution. How to guide the material to pass smoothly through reasonable design and collect and reduce dust during this process. Summary of the Invention

[0007] The purpose of the present invention is to provide a diversion type self-dust-removing chute to solve the above technical problems.

[0008] The present invention specifically adopts the following technical solutions to achieve the above purpose:

[0009] The present invention provides a diversion type self-dust-removing chute, which includes a primary buffer diversion module, a secondary buffer diversion module, and a positive pressure dust filtration module. The primary buffer diversion module is located above the secondary buffer diversion module. The primary buffer diversion module and the secondary buffer diversion module are both provided with communicating diversion holes. The aperture of the diversion holes in the primary buffer diversion module is larger than that of the secondary buffer diversion module. A side wall guide through hole communicating with the positive pressure dust filtration module is opened at the bottom of one side wall of the secondary buffer diversion module. A first flexible baffle is provided at the side wall guide through hole. A dust removal component is provided in the positive pressure dust filtration module. A side wall discharge port is provided on the side of the positive pressure dust filtration module away from the secondary buffer diversion module. A second flexible baffle is provided at the side wall discharge port.

[0010] Specifically, a two-stage buffer design form is adopted. It has the function of autonomous dust collection and reduction, and at the same time, the structural configuration of sealing and wear resistance is considered to inhibit the occurrence of material surging and dust generation.

[0011] The three main body modules can be designed in different structural forms and various combination ways to meet and adapt to the actual needs of users, the equipment layout, the site space scale, etc.

[0012] In one embodiment, a connection flange for sealing connection with the equipment is provided at the top opening of the primary buffer diversion module, and the bottom opening size of the primary buffer diversion module is larger than the top opening size of the secondary buffer diversion module.

[0013] Specifically, a supporting connection flange can be installed at the top opening of the primary buffer diversion module according to needs. The connection flange is sealed and connected with the equipment, and the opening size of the top opening of the primary buffer diversion module is larger than the top opening size of the secondary buffer diversion module.

[0014] In one embodiment, a primary baffle is provided at the connection between the bottom opening of the primary buffer diversion module and the top opening of the secondary buffer diversion module.

[0015] In one embodiment, the secondary buffer and diversion module is a secondary buffer channel. The side of the secondary buffer and diversion module away from the positive pressure dust filtration module is a stepped platform with a gradually decreasing opening in a stepped design. At least one end of the stepped platform is vertically provided with a secondary baffle, and the height of each secondary baffle is lower than the height of the upper stepped platform.

[0016] Specifically, the secondary buffer and diversion module adopts a stepped design and is equipped with secondary baffles. The left, right, and rear parts are all sealed, and it can guide the material to unload through the front discharge port. A primary curtain is also provided to prevent the material from being too scattered, and it is also one of the guarantees for the sealing of the chute.

[0017] In addition, the number and installation form of the secondary baffles can be adjusted according to actual usage requirements.

[0018] In one embodiment, the height of the side wall guide through-hole is greater than the height of the side wall discharge port. The first flexible block is installed at the top of the side wall guide through-hole, and the width of the first flexible block is adapted to the width of the side wall guide through-hole;

[0019] The second flexible block is installed at the top of the side wall discharge port, and the width of the second flexible block is adapted to the width of the side wall discharge port.

[0020] In one embodiment, the first flexible block includes multiple primary curtains arranged in parallel, and each of the second flexible blocks includes multiple secondary curtains arranged in parallel.

[0021] In one embodiment, the materials of the primary curtain and the secondary curtain are both one of flexible plastics, rubber, or non-woven fabrics.

[0022] Specifically, the materials of the primary curtain and the secondary curtain can be any one of flexible plastics, rubber, or non-woven fabrics, which can ensure the overall sealing effect of the chute.

[0023] In one embodiment, the positive pressure dust filtration module is a cavity. The side wall guide through-hole and the side wall discharge port are respectively arranged on the front and rear sides of the cavity. The dust removal assembly includes multiple pull-out filters arranged in parallel in the cavity.

[0024] Specifically, the positive pressure dust filtration module is located at the front end of the chute discharge port and is equipped with pull-out filters, which can filter and absorb the excess dust inside the chute. The outer shape size of the module can be adjusted according to actual usage requirements, and different structural forms can be designed. In addition, a secondary curtain is provided to further improve the sealing performance of the chute.

[0025] In one embodiment, each pull-out filter is slidably installed in the cavity through a corresponding filter fixing groove, and an insertion hole allowing the corresponding pull-out filter to pass through is provided on one side wall of the positive pressure dust filtration module.

[0026] Specifically, the pull-out filter element is usually installed on the filter element fixing groove, and its installation quantity and installation form can be inspected, replaced and adjusted according to actual usage requirements. The filter element fixing groove can be equipped with profiles corresponding to the model specifications of the pull-out filter element to ensure that the filter element can be reasonably embedded into the dust filtration module.

[0027] In one embodiment, the bottom discharge ports of both the secondary buffer and diversion module and the positive pressure dust filtration module are arranged inside the feed chute of the belt conveyor.

[0028] The beneficial effects of the present utility model are as follows:

[0029] 1. The design of the entire chute has no external power intervention. By means of a reasonable internal structure, the material is guided to pass through the chute along a predetermined route and enter the downstream equipment, effectively avoiding the situation of material deviation and running.

[0030] 2. Adopt a two-stage buffer design form. It has the function of autonomous dust collection and dust reduction, and at the same time, the structural configuration of sealing and wear resistance is considered, suppressing the occurrence of material flushing and dust raising phenomena.

[0031] 3. Cancel the configuration of the system dust collector, reduce the system energy consumption, save the material conveying cost. The adaptability of the site space is greatly improved, the maintenance cost is low, which is beneficial to the optimization of the process flow. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present utility model, and thus should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0033] Figure 1 is the three-dimensional structure schematic diagram of the present utility model;

[0034] Figure 2 is Figure 1 the perspective view of

[0035] Figure 3 is the two-dimensional structure schematic diagram and the material and air flow direction diagram of the present utility model;

[0036] Figure 4 is the structure schematic diagram of the present utility model installed on the belt conveyor;

[0037] Markings in the figure: 1 - Primary buffer and diversion module, 2 - Connecting flange, 3 - Primary baffle, 4 - Secondary buffer and diversion module, 5 - Secondary baffle, 6 - Primary curtain, 7 - Positive pressure dust filtration module, 8 - Drawer-type filter element, 9 - Filter element fixing groove, 10 - Secondary curtain, 11 - Material guide trough; 12 - Belt conveyor. Detailed implementation

[0038] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. Components of the embodiments of the present utility model usually described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0039] Therefore, the following detailed description of the embodiments of the present utility model provided in the accompanying drawings is not intended to limit the scope of the present utility model claimed, but merely represents selected embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts fall within the scope of protection of the present utility model.

[0040] It should be noted that similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. In addition, terms such as "first", "second", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0041] In the description of the embodiments of the present utility model, it should be noted that the orientation or positional relationship indicated by terms such as "inner", "outer", "upper", etc. is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the present utility model is usually placed during use. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation.

[0042] It should also be noted that unless otherwise clearly specified and limited, terms such as "set" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances, and therefore cannot be understood as a limitation to the present utility model.

[0043] Embodiment 1

[0044] This embodiment provides a diversion type self-dust-removing chute, which includes a primary buffer diversion module 1, a secondary buffer diversion module 4, and a positive pressure dust filtration module 7. The primary buffer diversion module 1 is located above the secondary buffer diversion module 4. The primary buffer diversion module 1 and the secondary buffer diversion module 4 are both provided with diversion holes that communicate with each other. The aperture of the diversion holes in the primary buffer diversion module 1 is larger than that of the secondary buffer diversion module 4. A side wall through hole communicating with the positive pressure dust filtration module 7 is opened at the bottom of one side wall of the secondary buffer diversion module 4. A first flexible stopper is provided at the side wall through hole. A dust removal component is provided in the positive pressure dust filtration module 7. A side wall discharge port is provided on the side of the positive pressure dust filtration module 7 away from the secondary buffer diversion module 4. A second flexible stopper is provided at the side wall discharge port.

[0045] Specifically, a two-stage buffer design form is adopted. It has the function of autonomous dust collection and dust reduction, and at the same time, the structural configuration of sealing and wear resistance is considered, which inhibits the occurrence of material flushing and dust raising phenomena.

[0046] The three main modules can be designed into different structural forms and various combination methods to meet and adapt to the actual needs of users, the equipment layout, the site space scale, etc.

[0047] Embodiment 2

[0048] This embodiment provides a diversion type self-dust-removing chute, which includes a primary buffer diversion module 1, a secondary buffer diversion module 4, and a positive pressure dust filtration module 7. The primary buffer diversion module 1 is located above the secondary buffer diversion module 4. The primary buffer diversion module 1 and the secondary buffer diversion module 4 are both provided with diversion holes that communicate with each other. The aperture of the diversion holes in the primary buffer diversion module 1 is larger than that of the secondary buffer diversion module 4. A side wall through hole communicating with the positive pressure dust filtration module 7 is opened at the bottom of one side wall of the secondary buffer diversion module 4. A first flexible stopper is provided at the side wall through hole. A dust removal component is provided in the positive pressure dust filtration module 7. A side wall discharge port is provided on the side of the positive pressure dust filtration module 7 away from the secondary buffer diversion module 4. A second flexible stopper is provided at the side wall discharge port.

[0049] A connecting flange 2 for sealing connection with the equipment is provided at the top opening of the primary buffer diversion module 1. The bottom opening size of the primary buffer diversion module 1 is larger than the top opening size of the secondary buffer diversion module 4.

[0050] Specifically, a matching connecting flange 2 can be installed at the top opening of the primary buffer diversion module 1 according to needs. The connecting flange 2 is sealed and connected with the equipment. The opening size of the top opening of the primary buffer diversion module 1 is larger than the top opening size of the secondary buffer diversion module 4.

[0051] Embodiment 3

[0052] This embodiment provides a diversion type self-dust-falling chute, which includes a first-stage buffer diversion module 1, a second-stage buffer diversion module 4, and a positive pressure dust filtration module 7. The first-stage buffer diversion module 1 is located above the second-stage buffer diversion module 4. Both the first-stage buffer diversion module 1 and the second-stage buffer diversion module 4 are provided with communicating diversion holes. The aperture of the diversion holes in the first-stage buffer diversion module 1 is larger than that of the second-stage buffer diversion module 4. A side wall through hole communicating with the positive pressure dust filtration module 7 is opened at the bottom of one side wall of the second-stage buffer diversion module 4. A first flexible baffle is arranged at the side wall through hole. A dust removal component is arranged in the positive pressure dust filtration module 7. A side wall discharge port is arranged on the side of the positive pressure dust filtration module 7 away from the second-stage buffer diversion module 4. A second flexible baffle is arranged at the side wall discharge port.

[0053] A connecting flange 2 for sealing connection with the equipment is arranged at the top opening of the first-stage buffer diversion module 1. The bottom opening size of the first-stage buffer diversion module 1 is larger than the top opening size of the second-stage buffer diversion module 4.

[0054] A first-stage baffle 3 is arranged at the connection between the bottom opening of the first-stage buffer diversion module 1 and the top opening of the second-stage buffer diversion module 4.

[0055] The second-stage buffer diversion module 4 is a second-stage buffer channel. The side away from the positive pressure dust filtration module 7 of the second-stage buffer diversion module 4 is a stepped platform with a gradually decreasing opening in a stepped design. At least one end of the stepped platform is vertically provided with a second-stage baffle 5. The height of each second-stage baffle 5 is lower than the height of the upper stepped platform.

[0056] Specifically, the second-stage buffer diversion module 4 adopts a stepped design and is equipped with a second-stage baffle 5. The left, right, and rear parts are all sealed to guide the material to unload through the front discharge port. A first-stage curtain 6 is also provided to prevent the material from being too scattered and is also one of the guarantees for the sealing of the chute.

[0057] In addition, the installation quantity and installation form of the second-stage baffle 5 can be adjusted according to actual use requirements.

[0058] Embodiment 4

[0059] This embodiment further optimizes on the basis of Embodiment 3. Specifically:

[0060] The height of the side wall through hole is greater than the height of the side wall discharge port. The first flexible baffle is installed at the top of the side wall through hole, and the width of the first flexible baffle is adapted to the width of the side wall through hole;

[0061] The second flexible baffle is installed at the top of the side wall discharge port, and the width of the second flexible baffle is adapted to the width of the side wall discharge port.

[0062] The first flexible baffle includes multiple first-stage baffle curtains 6 arranged side by side, and each second flexible baffle includes multiple second-stage baffle curtains 10 arranged side by side. The materials of the first-stage baffle curtains 6 and the second-stage baffle curtains 10 are both one of flexible plastics, rubber or non-woven fabrics.

[0063] Specifically, first-stage baffle curtains 6 are also provided to prevent the materials from being too scattered, and it is also one of the guarantees for the sealing of the chute. Second-stage baffle curtains 10 are also provided to further improve the sealing performance of the chute.

[0064] The materials of the first-stage baffle curtains 6 and the second-stage baffle curtains 10 can be any one of flexible plastics, rubber or non-woven fabrics, which can ensure the overall sealing effect of the chute.

[0065] Embodiment 5

[0066] This embodiment is further optimized on the basis of Embodiment 4. Specifically:

[0067] The positive-pressure dust filtering module 7 is a cavity, and the side wall guide through-hole and the side wall discharge port are respectively arranged on the front and rear sides of the cavity. The dust removal assembly includes multiple pull-out filters 8 arranged side by side in the cavity. Each pull-out filter 8 is slidably installed in the cavity through a corresponding filter element fixing groove 9, and an insertion hole allowing the corresponding pull-out filter 8 to pass through is provided on one side wall of the positive-pressure dust filtering module 7.

[0068] Specifically, the positive-pressure dust filtering module 7 is located at the front end of the chute discharge port and is equipped with pull-out filters 8, which can filter and absorb the excess dust inside the chute, and the outer shape size of the module can be adjusted according to actual use requirements, and different structural forms can be designed. In addition, second-stage baffle curtains 10 are provided to further improve the sealing performance of the chute.

[0069] The pull-out filters 8 are usually installed on the filter element fixing grooves 9, and can be overhauled, replaced, and the installation quantity and installation form can be adjusted according to actual use requirements. The filter element fixing grooves 9 can be equipped with corresponding profiles according to the model specifications of the pull-out filters 8 to ensure that the filter elements can be reasonably embedded into the dust filtering module.

[0070] Embodiment 6

[0071] This embodiment is further optimized on the basis of Embodiment 5. Specifically:

[0072] The bottom discharge ports of the secondary buffer and diversion module 4 and the positive-pressure dust filtering module 7 are both arranged inside the guide trough of the belt conveyor.

[0073] Specific implementation process: The main body adopts a two-stage buffer and diversion design form. Among them, the connection section between the equipment discharge port and the chute is the first-stage buffer and diversion module 1. A blind flange is arranged at the upper end of the chute and welded to the reserved plate at the equipment discharge port, and a rubber gasket is used for sealing to ensure that there is no material leakage or air leakage at the connection between the equipment and the chute. The first-stage buffer and diversion module 1 has a relatively large opening size and is reduced in diameter at the connection with the second-stage buffer and diversion module 4. At the same time, a first-stage baffle 3 is arranged at the reduced-diameter part. The material first enters the first-stage buffer and diversion module 1 from the equipment discharge port. Due to the existence of the first-stage baffle 3, the first-stage material grinding is formed above the reduced-diameter part, protecting the chute and reducing the passing speed of the material for the first time (buffering). When the material enters the second-stage buffer and diversion module 4 after passing through the first-stage buffer and diversion module 1, the multi-stage stepped diversion design cooperates with multiple second-stage baffles 5 to form multi-stage material grinding, further reducing the passing speed of the material. At the same time, the second-stage buffer and diversion module 4 only retains the front discharge port with the opening direction consistent with the running direction of the downstream equipment (the belt conveyor in this embodiment). The discharge direction of the material and the stability of the material flow are effectively controlled. And the chute discharge port extends into the belt conveyor guide trough all the time, preventing the belt from running off track and greatly improving the sealing degree of the overall structure of the chute. The multi-place material grinding structure also greatly enhances the wear resistance of the chute. In addition, due to the positive pressure environment at the equipment discharge port, the air flow direction inside the chute is the same as the material discharge direction. This embodiment cleverly utilizes this principle and adds a positive pressure dust filtration module 7 and two-stage baffle curtains at the front end of the chute discharge port. When the material passing speed has been greatly reduced after two-stage buffering and the material flow is stable, the strict sealing design greatly reduces the dust emission. The excess dust is guided into the module for collection and absorption under the action of positive pressure and material flow, achieving the effect of self-collecting and reducing dust. In addition, the positive pressure dust filtration module 7 is equipped with a pull-out filter element 8 as a whole, and a reasonable number of filter elements can be configured according to the actual working conditions, and the layout form of the filter elements can be adjusted according to the frame structure of the location. When the dust removal capacity of the filter element tends to be saturated, the pull-out design is convenient for replacement and is also beneficial to daily maintenance and repair. It can be seen that in this structural form, the entire system no longer needs to be additionally equipped with a dust collector, the process flow is greatly optimized, and it is beneficial to the reduction of system energy consumption and transportation cost.

Claims

1. A diversion type self-dust-falling chute, characterized in that, It includes a primary buffer and diversion module (1), a secondary buffer and diversion module (4), and a positive pressure dust filtration module (7). The primary buffer and diversion module (1) is located above the secondary buffer and diversion module (4). Both the primary buffer and diversion module (1) and the secondary buffer and diversion module (4) are provided with communicating diversion holes. The aperture of the diversion holes in the primary buffer and diversion module (1) is larger than that of the secondary buffer and diversion module (4). A side wall through hole communicating with the positive pressure dust filtration module (7) is opened at the bottom of one side wall of the secondary buffer and diversion module (4). A first flexible baffle is provided at the side wall through hole. A dust removal assembly is provided in the positive pressure dust filtration module (7). A side wall discharge port is provided on the side of the positive pressure dust filtration module (7) away from the secondary buffer and diversion module (4). A second flexible baffle is provided at the side wall discharge port.

2. The diversion type self-dust-falling chute according to claim 1, wherein A connection flange (2) for sealing connection with the equipment is provided at the top opening of the primary buffer and diversion module (1). The bottom opening size of the primary buffer and diversion module (1) is larger than the top opening size of the secondary buffer and diversion module (4).

3. The diversion type self-dust-falling chute according to claim 2, characterized in that, A primary baffle plate (3) is provided at the connection between the bottom opening of the primary buffer and diversion module (1) and the top opening of the secondary buffer and diversion module (4).

4. The diversion type self-dust-falling chute according to claim 3, characterized in that, The secondary buffer and diversion module (4) is a secondary buffer channel. The side away from the positive pressure dust filtration module (7) of the secondary buffer and diversion module (4) is a stepped platform with a gradually decreasing opening. At least one end of the stepped platform is vertically provided with a secondary baffle plate (5). The height of each secondary baffle plate (5) is lower than the height of the upper stepped platform.

5. The diversion type self-dust-falling chute according to claim 1, characterized in that, The height of the side wall through hole is greater than the height of the side wall discharge port. The first flexible baffle is installed at the top of the side wall through hole, and the width of the first flexible baffle is adapted to the width of the side wall through hole. The second flexible baffle is installed at the top of the side wall discharge port, and the width of the second flexible baffle is adapted to the width of the side wall discharge port.

6. The diverting type self-dust-falling chute according to claim 5, wherein, The first flexible baffle includes multiple first baffle curtains (6) arranged in parallel. The second flexible baffle both includes multiple second baffle curtains (10) arranged in parallel.

7. The guiding type self-dust-falling chute according to claim 6, characterized in that, The materials of the first baffle curtain (6) and the second baffle curtain (10) are both one of flexible plastic, rubber or non-woven fabric.

8. The flow-guided self-dust-falling chute according to claim 1, wherein The positive pressure dust filtration module (7) is a cavity. The side wall through hole and the side wall discharge port are respectively arranged on the front and back sides of the cavity. The dust removal assembly includes multiple pull-out filters (8) arranged in parallel in the cavity.

9. The diversion type self-dust-falling chute according to claim 8, wherein, Each pull-out filter (8) is slidably installed in the cavity through a corresponding filter fixing groove (9). An insertion hole allowing the corresponding pull-out filter (8) to pass through is provided on one side wall of the positive pressure dust filtration module (7).

10. The diversion type self-dust-falling chute according to claim 1, characterized in that, The bottom discharge ports of the secondary buffer and diversion module (4) and the positive pressure dust filtration module (7) are both arranged inside the feed chute of the belt conveyor.

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