Double-layer double-seal guide chute of adhesive tape machine

Abstract

The utility model discloses a double-layer double-seal guide chute of an adhesive tape machine, which relates to the technical field of solid bulk material conveying and comprises a guide chute, an adhesive tape machine middle frame and an adhesive tape machine conveying belt surface, the guide chute is fixed on the adhesive tape machine middle frame through a guide chute support, and the adhesive tape machine conveying belt surface penetrates through the guide chute; a wind-shielding and dust-filtering curtain is arranged at the end part of the guide chute, and a guide chute port seal is arranged on the outer side of the wind-shielding and dust-filtering curtain; the bottom of the guide chute port seal is in sealing contact with the upper surface of the belt conveyor surface of the adhesive tape machine; a sealing supporting plate and a bearing carrier roller set are arranged on the lower surface of the adhesive tape machine conveying belt face and jointly bear the load of the adhesive tape machine conveying belt face. The material receiving section of the conveying belt face of the sealing-tape machine is sealed in an all-dimensional mode, so that the problem that dust is unorganized to be discharged in the process that solid bulk materials are transferred and conveyed by the sealing-tape machine in industrial and mining enterprises is solved, the device is more suitable for working conditions of reconstruction projects, and cost and construction period in ultra-low emission reconstruction projects of the industrial and mining enterprises are greatly saved.

Description

Technical Field

[0001] The utility model relates to the technical field of solid bulk material conveying, in particular to a double-layer double-sealed material guide trough of a belt conveyor. Background Art

[0002] Belt conveyors are a common type of conveying equipment for bulk solid materials, widely used in industrial and mining enterprises. Materials are fed through feeding facilities and dropped onto the conveyor belt's receiving point. A guide trough is located at this point to prevent the escape of large amounts of dust generated during the feeding process. Conventional guide troughs are single-layer structures, primarily consisting of a steel top cover and two side panels. A gap is left between the lower ends of the side panels and the conveyor belt to prevent the steel from scratching the belt. To prevent dust from escaping through this gap, dust-proof panels made of rubber or polyurethane are installed on both side panels to seal the gap between the side panels and the conveyor belt.

[0003] The conveyor belt surface of the belt conveyor is supported by discontinuously arranged load-bearing roller groups (generally one group is arranged at a spacing of 1m to 1.2m). Due to the flexible characteristics of the conveyor belt, it forms a wavy droop between every two adjacent load-bearing roller groups, resulting in a large gap between the conveyor belt surface and the anti-dust plate. Especially at the material receiving point, the conveyor belt surface is subjected to the impact of falling materials, causing the drooping to intensify. As a result, the gap between the conveyor belt surface and the anti-dust plate will instantly increase, causing the dust in the material guide chute to escape quickly, resulting in dust pollution in the production process.

[0004] The patent with publication number CN206013783U discloses a double-layer sealed material guide trough for a belt conveyor. It includes an inner sealing cover and an outer sealing cover. The upper end of the outer sealing cover is connected to the two sides of the inner sealing cover. The lower end of the outer sealing cover is provided with a slide plate for lifting the tape. The inner sealing cover above the slide plate is provided with a sealing plate for pressing the tape. The sealing plate, the inner sealing cover and the tape form an inner closed cavity for conveying materials. The sealing plate, the inner sealing cover and the outer sealing cover form an outer closed cavity. The beneficial effect is that the inner closed cavity and the outer closed cavity are conducive to improving the sealing performance. By providing a slide plate and cooperating with the sealing plate, the gap between the material guide trough and the tape surface caused by the vibration of the belt conveyor during operation, the deviation of the belt conveyor, and the impact of materials at the unloading point can be avoided. The operation is stable, and the material in the inner closed cavity can be effectively prevented from entering the outer closed cavity, reducing dust and improving the sealing effect.

[0005] In the above-mentioned material guide trough, the slide plate is made of high-molecular polyethylene with a molecular weight greater than 2 million. If the material leaks slightly, it will be stuck between the slide plate and the back of the tape, which will aggravate the wear of the slide plate, affect the overall sealing effect, and cause serious dust leakage. At the same time, the structure does not take into account the convenience of replacing sealing plates, slide plates and other vulnerable parts during daily maintenance of the equipment. Therefore, there is an urgent need for a double-layer double-sealed material guide trough for a tape machine to improve the sealing performance and facilitate daily maintenance. Summary of the Invention

[0006] The purpose of the utility model is to provide a double-layer double-sealed material guide trough of a belt conveyor to solve the problems existing in the above-mentioned prior art, to improve the sealing performance of the material guide trough at the material receiving point of the belt conveyor, and to reduce the maintenance cost of the equipment.

[0007] To achieve the above purpose, the present invention provides the following solutions:

[0008] The utility model provides a double-layer double-sealed material guide trough of a belt conveyor, comprising a material guide trough, a belt conveyor intermediate frame and a belt conveyor conveyor surface; the material guide trough comprises a material guide trough body, a wind-shield dust filter curtain, a material guide trough port seal, a sealing support plate, a bearing roller group and a material guide trough bracket; the material guide trough body is fixed to the belt conveyor intermediate frame through the material guide trough bracket, and the belt conveyor surface passes through the material guide trough body; the feed end and the discharge end of the material guide trough body are both provided with the wind-shield dust filter curtain. The dust curtain, the outer side of the wind-shielding dust curtain is provided with the guide trough port seal; the wind-shielding dust curtain and the guide trough port seal together constitute a double-layer double-sealed structure at both ends of the guide trough; the guide trough body includes a guide trough top cover plate, a guide trough inner plate, a double-sealed anti-dust plate and a sealed maintenance door, the guide trough top cover plate is arranged above the conveyor belt surface of the belt conveyor; the guide trough inner plate is located on both sides above the conveyor belt surface of the belt conveyor, and ... The top of the plate is connected to the top cover plate of the material guide trough, the top of the double-sealed dust-proof plate is connected to the lower part of the inner plate of the material guide trough, and the bottom of the double-sealed dust-proof plate is in sealing contact with the side of the upper surface of the conveyor belt surface of the belt conveyor; the sealed inspection door is located on the outside of the inner plate of the material guide trough, and the top of the sealed inspection door is connected to the top cover plate of the material guide trough, and the bottom of the sealed inspection door is in sealing contact with the side of the middle frame of the belt conveyor; the top cover plate of the material guide trough, the inner plate of the material guide trough, the double-sealed dust-proof plate and the sealed inspection door together constitute a double-layer double-sealed structure on both sides of the material guide trough; the bearing roller group is arranged on the middle frame of the belt conveyor, and the bearing roller group is located below the conveyor belt surface of the belt conveyor; the sealing support plate is located on both sides below the conveyor belt surface of the belt conveyor; the bearing roller group and the sealing support plate jointly support the conveyor belt surface of the belt conveyor to ensure the sealing contact between it and the double-sealed dust-proof plates.

[0009] Optionally, the material guide trough body includes a front section material guide trough body, a middle section material guide trough body and a terminal section material guide trough body; the front section material guide trough body, the middle section material guide trough body and the terminal section material guide trough body are sequentially arranged on the middle frame of the belt conveyor; at least one section of the middle section material guide trough body is arranged between the front section material guide trough body and the terminal section material guide trough body; the windproof dust filter curtain and the material guide trough port seal are provided at one end of the front section material guide trough body and the terminal section material guide trough body away from the middle section material guide trough body.

[0010] Optionally, the material guide trough further includes a material guide trough bracket; the material guide trough bracket is arranged on the middle frame of the belt conveyor and is connected to the material guide trough body and the sealing support plate, and the material guide trough bracket is used to support the material guide trough body and the sealing support plate.

[0011] Optionally, the inner side plate of the material guide trough and the double-sealed dust prevention plate are connected through a clamp and angle aluminum.

[0012] Optionally, the load-bearing roller group includes a load-bearing half roller, a load-bearing flat roller and a load-bearing roller group bracket; the load-bearing roller group bracket is arranged on the middle frame of the belt conveyor and is located below the conveyor belt surface of the belt conveyor; the middle part of the load-bearing roller group bracket is arranged horizontally, and the two sides of the load-bearing roller group bracket are inclined upward outward; the load-bearing flat roller is installed in the middle horizontal position of the load-bearing roller group bracket, and the load-bearing half roller is installed at the inclined positions on both sides of the load-bearing roller group bracket, the load-bearing flat roller is used to support the middle part of the conveyor belt surface of the belt conveyor, the load-bearing half roller is used to support a part of both sides of the conveyor belt surface of the belt conveyor, and the remaining parts on both sides are supported by the sealing support plate.

[0013] Optionally, a reinforced sealing plate is provided on the outer side of the double-sealed anti-dust plate, one end of the reinforced sealing plate is connected to the lower outer side of the double-sealed anti-dust plate, and the other end of the reinforced sealing plate is in sealing contact with the side upper surface of the belt conveyor belt surface; a double sealing structure is formed between the bottom of the double-sealed anti-dust plate and the bottom of the reinforced sealing plate and the upper surface of the belt conveyor belt surface.

[0014] Optionally, the sealed inspection door is a swing door.

[0015] Optionally, an observation window is provided on the sealed inspection door.

[0016] Optionally, the windshield dust filter curtain has a lifting adjustment function, and the lifting adjustment ensures the sealing between the windshield dust filter curtain and the conveyor belt surface.

[0017] Compared with the prior art, the utility model has achieved the following technical effects:

[0018] The double-layer double-sealed material guide trough of the belt conveyor in the utility model effectively solves the problem of unorganized dust emission during the transfer and transportation of solid bulk materials by the belt conveyor in industrial and mining enterprises by performing all-round and complete sealing on the material receiving section of the belt conveyor conveyor belt surface. At the same time, on the basis of ensuring good sealing of the material guide trough, it is more adaptable to the actual working conditions of the renovation project, and effectively helps industrial and mining enterprises to greatly save costs and construction period in ultra-low emission renovation projects. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 This is a structural diagram of the double-layer double-sealed material guide trough of the tape conveyor in the present utility model;

[0021] Figure 2 This is a structural schematic diagram of the cross section of the middle section of the double-layer double-sealed material guide trough of the tape conveyor in the present invention;

[0022] Figure 3 This is a structural schematic diagram of the cross section of the front section of the double-layer double-sealed material guide trough of the tape conveyor in the present invention;

[0023] Figure 4 It is a structural schematic diagram of the cross section of the last section of the double-layer double-sealed material guide trough of the belt conveyor in the present utility model.

[0024] Description of reference numerals:

[0025] 1. Front section of the material guide chute body; 2. Middle section of the material guide chute body; 3. End section of the material guide chute body; 4. Wind and dust filter curtain; 5. Sealed inspection door; 6. Middle frame of the belt conveyor; 7. Conveyor belt surface of the belt conveyor; 8. Top cover of the material guide chute; 9. Inner side plate of the material guide chute; 10. Clamp and angle aluminum; 11. Double-sealed anti-dust plate; 12. Material guide chute bracket; 13. Sealed support plate; 14. Load-bearing half roller; 15. Load-bearing flat roller; 16. Load-bearing roller group bracket; 17. Material guide chute port seal. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0028] like Figures 1 to 4As shown, this embodiment provides a double-layer double-sealed material guide trough of a belt conveyor, including a material guide trough, a belt conveyor intermediate frame 6 and a belt conveyor conveyor belt surface 7; the material guide trough includes a material guide trough body, a wind-proof dust filter curtain 4, a material guide trough port seal 17, a sealing support plate 13, a load-bearing roller group and a material guide trough bracket 12; the material guide trough body is fixed to the belt conveyor intermediate frame 6 through the material guide trough bracket 12, and the belt conveyor conveyor belt surface 7 passes through the material guide trough body.

[0029] In this specific embodiment, the material guide trough includes a front-section material guide trough body 1, a middle-section material guide trough body 2 and a terminal-section material guide trough body 3; the front-section material guide trough body 1, the middle-section material guide trough body 2 and the terminal-section material guide trough body 3 are sequentially arranged on the middle frame 6 of the belt conveyor; at least one section of the middle-section material guide trough body 2 is arranged between the front-section material guide trough body 1 and the terminal-section material guide trough body 3; the front-section material guide trough body 1 and the terminal-section material guide trough body 3 are provided with a wind-proof dust filter curtain 4 and a material guide trough port seal 17 at one end away from the middle-section material guide trough body 2.

[0030] The guide trough is divided into sections, and each section of the guide trough includes a guide trough top cover plate 8, a guide trough inner side plate 9, a double-sealed anti-dust plate 11, a sealed maintenance door 5, a guide trough bracket 12, a sealing support plate 13 and a load-bearing roller group; the guide trough bracket 12 and the load-bearing roller group are both arranged on the middle frame 6 of the belt conveyor, and the load-bearing roller group is located at the inner lower part of the guide trough bracket 12; the load-bearing roller group is used to support the conveyor belt surface 7 of the belt conveyor; the guide trough top cover plate 8 is arranged on the top of the guide trough bracket 12; the guide trough inner side plate 9 is located on both sides above the conveyor belt surface 7 of the belt conveyor, the top of the guide trough inner side plate 9 is connected to the guide trough top cover plate 8, and the bottom of the guide trough inner side plate 9 is connected to A double-sealed anti-dust plate 11 is provided between the conveyor belt surfaces 7 of the belt conveyor; a sealing support plate 13 is located on both sides of the conveyor belt surface 7 and contacts the lower surface of the conveyor belt surface 7. The continuous support of the conveyor belt surface 7 from the bottom by the sealing support plate 13 prevents the conveyor belt surface 7 from sagging on both sides during the material receiving and operation process, and effectively ensures the sealing of the contact surface between the double-sealed anti-dust plate 11 and the conveyor belt surface 7, thereby forming a double-layer double-sealed structure on both sides of the material guide trough, which greatly improves the sealing of the material guide trough and effectively prevents dust in the material guide trough from escaping from the gaps on both sides due to the sagging of the conveyor belt surface 7, causing pollution to the production environment. The sealing support plate 13 is an independent component and can adjust the gap size with the bearing half roller 14 in the bearing roller group, which can effectively prevent the gap from causing damage to the roller and realize independent disassembly and installation.

[0031] The inner plate 9 of the guide trough is connected to the double-sealed anti-dust plate 11 through a clamp and angle aluminum 10, and the installation position can be flexibly adjusted so that the contact surface between the double-sealed anti-dust plate 11 and the conveyor belt surface maintains effective sealing.

[0032] The load-bearing roller group includes a load-bearing half roller 14, a load-bearing flat roller 15 and a load-bearing roller group bracket 16; the load-bearing roller group bracket 16 is arranged on the middle frame 6 of the belt conveyor and is located below the conveyor belt surface 7 of the belt conveyor; the middle part of the load-bearing roller group bracket 16 is arranged horizontally, and the two sides of the load-bearing roller group bracket 16 are inclined upward to the outside; the load-bearing flat roller 15 is located in the middle part of the load-bearing roller group bracket 16, and the load-bearing half roller 14 is located on both sides of the load-bearing roller group bracket 16. The load-bearing flat roller 15 is used to support the middle part of the conveyor belt surface 7 of the belt conveyor, and the load-bearing half roller 14 is used to support both sides of the conveyor belt surface 7 of the belt conveyor.

[0033] As an independent component, the load-bearing half roller 14 can be easily assembled and disassembled as the corresponding standard roller in the Belt Conveyor Design Manual. The load-bearing roller group can also be used as an independent component to realize flexible design of the arrangement spacing.

[0034] For the renovation project, the original standard load-bearing roller group of the belt conveyor can be fully utilized. Only the two side rollers of the standard load-bearing roller group are replaced with the load-bearing half rollers 14, thereby avoiding the project cost of equipment and construction period caused by first dismantling the original standard load-bearing roller group and then installing a new load-bearing roller group.

[0035] A reinforcing sealing plate is provided on the outer side of the double-sealed dust-proof plate 11. One end of the reinforcing sealing plate is connected to the lower outer side of the double-sealed dust-proof plate 11, and the other end of the reinforcing sealing plate contacts the upper side surface of the conveyor belt surface 7. The reinforcing sealing plate enables the contact end of the double-sealed dust-proof plate 11 and the conveyor belt surface 7 to adopt a Y-shaped structure, forming a double-sealed structure and improving the sealing performance of the contact surface.

[0036] The sealed inspection door 5 is a swing door, and an observation window is provided on the sealed inspection door 5 to facilitate on-site inspections to promptly discover faults and can be quickly opened for maintenance.

[0037] The windshield dust filter curtain 4 has a lifting and adjusting function, which ensures the sealing between the windshield dust filter curtain and the conveyor belt surface through lifting and adjusting. In this specific embodiment, a drum is provided at the top of the windshield dust filter curtain 4. The windshield dust filter curtain 4 is wound and unwound by rotating the drum, thereby adjusting the height of the bottom of the windshield dust filter curtain 4 so that the bottom of the windshield dust filter curtain 4 can form a good seal with the conveyor belt surface. The drum can be connected to a motor transmission, and the rotation of the drum is achieved by the rotation of the motor. The drum can also be rotated manually. For example, a gear is provided on one side of the drum and a manual crank is extended outward. The manual crank rotates the gear, driving the rotation of the drum to achieve the height adjustment of the bottom of the windshield dust filter curtain 4.

[0038] The guide trough top cover plate 8 and the guide trough inner plate 9 form the guide trough inner sealing structure and are supported and fixed by the guide trough bracket 12. The guide trough bracket 12 is fixedly rooted on the belt conveyor intermediate frame 6 to bear the load of the entire guide trough; the double-sealed anti-dust plate 11 is used as a seal to seal between the guide trough inner plate 9 and the belt conveyor conveyor belt surface 7. The clamper and the angle aluminum 10 are fixed to the outer wall of the guide trough inner plate 9 to clamp and fix the double-sealed anti-dust plate 11; the sealing support plate 13 is fixed on the guide trough bracket 12 to To support the conveyor belt surface 7 of the belt conveyor from the bottom; the bearing half roller 14 and the bearing flat roller 15 are fixedly installed on the bearing roller group bracket 16 as the main bearing components of the conveyor belt surface 7 of the belt conveyor, and the bearing roller group bracket 16 is fixed on the middle frame 6 of the belt conveyor; the sealed inspection door 5 is fixedly installed on the guide trough bracket 12 in the form of a swing door structure, and the sealed inspection door 5 and the guide trough top cover plate 8 together constitute the outer sealing structure of the guide trough, thereby forming a double-layer double-sealing structure on both sides of the single-section guide trough.

[0039] like Figure 1 As shown, assuming that the running direction of the belt conveyor surface 7 is from left to right, we define the left end as the end and the right end as the front end along the running direction. A complete set of guide troughs is generally composed of a front section guide trough body 1, a rear section guide trough body 3, and several middle sections guide trough bodies 2 (the number is ≥1). The front section guide trough body 1 and the rear section guide trough body 3 are both equipped with a wind-shield dust filter curtain 4, and a guide trough port seal 17 is arranged on the outside of the wind-shield dust filter curtain 4 to form a double-layer double-sealing structure at both ends of the guide trough.

[0040] Through the joint action of various components, a complete set of double-layer double-sealed structures on both sides and both ends of the material guide trough is completed, which together constitute the integrity of the double-layer double-sealed material guide trough structural function. Among all the components of the material guide trough, the double-sealed anti-dust plate 11 is clamped and fixed by the clamper and the angle aluminum 10, and all other components are fastened and installed by bolts.

[0041] The double-layer double-sealed material guide trough of the belt conveyor in this embodiment is composed of a material guide trough top cover plate 8, a material guide trough inner side plate 9, a double-sealed dust prevention plate 11, a sealed maintenance door 5, a wind-proof dust filter curtain 4, and a material guide trough port seal 17, which together form a double-layer double-sealed structure on both sides and both ends of the material guide trough, greatly improving the sealing of the material guide trough and effectively preventing dust in the material guide trough from escaping and causing pollution to the production environment.

[0042] The front section material guide trough body 1 and the rear section material guide trough body 3 are both equipped with a wind-shield dust filter curtain 4 and a material guide trough port seal 17, wherein the wind-shield dust filter curtain 4 has a lifting and adjusting function, which can ensure the sealing between the wind-shield dust filter curtain 4 and the conveyor belt surface, and compensate for the gaps caused by the wind-shield dust filter curtain 4 being worn by the conveyor belt surface through lifting and adjusting; the material guide trough port seal 17 is an upper and lower structure, with the upper part being a steel plate and the lower part being a rubber. The material guide trough port seal 17 can also compensate for the gaps caused by the wear of the conveyor belt surface by the material transported by the conveyor belt surface by adjusting the installation height of the rubber, thereby forming a double-layer double-sealing structure at both ends of the material guide trough, which greatly improves the sealing of the material guide trough, and effectively prevents the dust inside the material guide trough from being carried out from the front end outlet by the internal induced wind generated when the conveyor belt surface is running, causing pollution to the production environment.

[0043] The length of the sealing support plate 13 in each section of the guide trough is consistent with the length of the guide trough and is fixed to the guide trough bracket 12 by bolts. It can be independently disassembled and assembled for easy maintenance and replacement. The width of the sealing support plate 13 fully considers the external dimensions of the bearing half roller 14 and the bearing roller group bracket 16 to form a coordinated fit to avoid interference. At the same time, the gap between the sealing support plate 13 and the bearing half roller 14 can be fine-tuned along the width direction to avoid damage to the roller bearings due to material jamming.

[0044] It should be noted that it is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, from all perspectives, the embodiments should be regarded as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description. Therefore, it is intended that all changes that fall within the meaning and range of equivalents of the claims be included in the present invention, and any reference signs in the claims should not be regarded as limiting the claims involved.

[0045] This specification uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only intended to help understand the method and core concept of the present invention. At the same time, those skilled in the art will find that the specific implementation methods and application scopes may vary based on the concept of the present invention. In summary, the contents of this specification should not be construed as limiting the present invention.

Claims

1. A double-layer double-sealed material guide trough for a belt conveyor, characterized in that: The material guide trough comprises a material guide trough, a belt conveyor intermediate frame and a belt conveyor conveyor surface; the material guide trough comprises a material guide trough body, a wind-shield dust filter curtain, a material guide trough port seal, a sealing support plate, a bearing roller group and a material guide trough bracket; the material guide trough body is fixed to the belt conveyor intermediate frame through the material guide trough bracket, and the belt conveyor conveyor surface passes through the material guide trough body; the material guide trough body is provided with the wind-shield dust filter curtain at the feeding end and the material guide trough discharge end, and the material guide trough port seal is provided on the outer side of the wind-shield dust filter curtain; the wind-shield dust filter curtain and the material guide trough port seal together constitute a double-layer double-sealing structure at both ends of the material guide trough; The guide trough body includes a guide trough top cover plate, a guide trough inner plate, a double-sealed dust-proof plate and a sealed maintenance door, the guide trough top cover plate is arranged above the belt conveyor belt surface; the guide trough inner plate is located on both sides above the belt conveyor belt surface, and the top of the guide trough inner plate is connected to the guide trough top cover plate, the top of the double-sealed dust-proof plate is connected to the lower part of the guide trough inner plate, and the bottom of the double-sealed dust-proof plate is in sealing contact with the side of the upper surface of the belt conveyor belt surface; the sealed maintenance door is located on the outer side of the guide trough inner plate, and the top of the sealed maintenance door is connected to the guide trough top cover plate, and the bottom of the sealed maintenance door is in sealing contact with the side of the belt conveyor middle frame; the guide trough top cover plate, the guide trough inner plate, the double-sealed dust-proof plate and the sealed maintenance door together constitute a double-layer double-sealed structure on both sides of the guide trough; The load-bearing roller group is arranged on the middle frame of the belt conveyor, and the load-bearing roller group is located below the conveyor belt surface of the belt conveyor; the sealing support plate is located on both sides below the conveyor belt surface of the belt conveyor; the load-bearing roller group and the sealing support plate jointly support the conveyor belt surface of the belt conveyor to ensure the sealed contact between it and the double-sealed dust-proof plate.

2. The double-layer double-sealed material guide trough of the tape conveyor according to claim 1, characterized in that: The material guide trough body includes a front section material guide trough body, a middle section material guide trough body and a terminal section material guide trough body; the front section material guide trough body, the middle section material guide trough body and the terminal section material guide trough body are sequentially arranged on the middle frame of the belt conveyor; at least one section of the middle section material guide trough body is arranged between the front section material guide trough body and the terminal section material guide trough body; the wind-proof dust filter curtain and the material guide trough port block are arranged at one end of the front section material guide trough body and the terminal section material guide trough body away from the middle section material guide trough body.

3. The double-layer double-sealed material guide trough of the tape conveyor according to claim 1, characterized in that: The material guide trough also includes a material guide trough bracket; the material guide trough bracket is arranged on the middle frame of the belt conveyor and is connected to the material guide trough body and the sealing support plate, and the material guide trough bracket is used to support the material guide trough body and the sealing support plate.

4. The double-layer double-sealed material guide trough of the tape conveyor according to claim 1, characterized in that: The inner side plate of the material guide trough is connected to the double-sealed dust-proof plate through a clamper and angle aluminum.

5. The double-layer double-sealed material guide trough of the tape conveyor according to claim 1, characterized in that: The load-bearing roller group includes a load-bearing half roller, a load-bearing flat roller and a load-bearing roller group bracket; the load-bearing roller group bracket is arranged on the middle frame of the belt conveyor and is located below the conveyor belt surface of the belt conveyor; the middle part of the load-bearing roller group bracket is arranged horizontally, and the two sides of the load-bearing roller group bracket are inclined upward outward; the load-bearing flat roller is installed in the middle horizontal position of the load-bearing roller group bracket, and the load-bearing half roller is installed at the inclined positions on both sides of the load-bearing roller group bracket, the load-bearing flat roller is used to support the middle part of the conveyor belt surface of the belt conveyor, the load-bearing half roller is used to support a part of both sides of the conveyor belt surface of the belt conveyor, and the remaining parts on both sides are supported by the sealing support plate.

6. The double-layer double-sealed material guide trough of the tape conveyor according to claim 1, characterized in that: A reinforced sealing plate is provided on the outer side of the double-sealed anti-dust plate, one end of the reinforced sealing plate is connected to the lower outer side of the double-sealed anti-dust plate, and the other end of the reinforced sealing plate is in sealing contact with the side upper surface of the conveyor belt surface of the belt conveyor; a double sealing structure is formed between the bottom of the double-sealed anti-dust plate and the bottom of the reinforced sealing plate and the upper surface of the conveyor belt surface of the belt conveyor.

7. The double-layer double-sealed material guide trough of the tape conveyor according to claim 1, characterized in that: The sealed inspection door is a swing door.

8. The double-layer double-sealed material guide trough of the tape conveyor according to claim 1 or 7, characterized in that: The sealed inspection door is provided with an observation window.

9. The double-layer double-sealed material guide trough of the tape conveyor according to claim 1, characterized in that: The windshield dust filter curtain has a lifting adjustment function, and the sealing between the windshield dust filter curtain and the conveyor belt surface is ensured through lifting adjustment.

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