Sealing device of belt conveyor

Abstract

The utility model relates to a belt conveyor sealing device which comprises a shell structure which is formed by a top cover, two sets of side plate assemblies and two end covers in an enclosing mode and can cover the outside of a belt conveyor, each set of side plate assembly comprises an outer side door assembly and an inner side door assembly, the outer side door assembly comprises a plurality of outer side moving doors, and the inner side door assembly comprises a plurality of inner side moving doors. The outer side moving door and the inner side moving door can move in the length direction of the shell structure. When the side plate assembly is located at the closed position, the multiple outer side moving doors and the multiple inner side moving doors are arranged in a staggered mode in the length direction of the shell structure, and the side portions of the outer side moving doors can be in butt joint with the side portions of the adjacent inner side moving doors. When the side plate assembly is in the open position, at least one outer side moving door can be overlapped with the adjacent inner side moving door. The belt conveyor can be closed, and operators can conveniently go in and out for maintenance.

Description

Technical Field

[0001] The utility model relates to the field of dust prevention and environmental protection, in particular to a belt conveyor sealing device. Background Art

[0002] Belt conveyors are widely used in steel enterprises and are important equipment for conveying materials. In order to reduce the generation of dust and the spilling of materials during material transportation and transfer, belt conveyors are generally equipped with ordinary material guide troughs or environmentally friendly double-layer sealed material guide troughs. However, with the implementation of ultra-low emissions in the steel industry, various steel enterprises have put forward higher requirements for dust suppression during the conveying of materials by belt conveyors in order to achieve environmental protection and effectively improve the working environment, thus resulting in belt conveyor closures.

[0003] At present, there are not many implementation cases of good sealing of belt conveyors, but there is a very large demand for it.

[0004] Regarding the closure of the belt conveyor, the prior art uses steel plate welded enclosures on the sides of the belt conveyor. Although there are inspection holes, it will affect the overall maintenance of the equipment when the internal equipment is overhauled. The prior art also uses movable steel plates for closure, but the structure is relatively simple; the movable steel plates used also use square steel and bolts to form a simple slideway, which is easy to deform and jam, affecting the appearance. Utility Model Content

[0005] The utility model aims to provide a belt conveyor closing device, which can realize the closing of the belt conveyor and facilitate operators to enter and exit for maintenance.

[0006] The purpose of the utility model is achieved in this way. A belt conveyor closing device comprises a shell structure surrounded by a top cover, two groups of side panel assemblies and two end covers and can be covered on the outside of the belt conveyor; each group of side panel assemblies comprises an outer door assembly and an inner door assembly arranged side by side along the width direction of the shell structure, the outer door assembly comprises a plurality of outer movable doors arranged in sequence along the length direction of the shell structure, the inner door assembly comprises a plurality of inner movable doors arranged in sequence along the length direction of the shell structure, and both the outer movable doors and the inner movable doors can move along the length direction of the shell structure; when the side panel assembly is in a closed position, the plurality of outer movable doors and the plurality of inner movable doors are staggered along the length direction of the shell structure, and the side portions of the outer movable doors can be connected with the side portions of the adjacent inner movable doors; when the side panel assembly is in an open position, at least one of the outer movable doors can overlap with the adjacent inner movable door.

[0007] In a preferred embodiment of the present invention, each set of side panel assemblies also includes an upper track and a lower track arranged at intervals up and down, the upper end of the outer moving door and the upper end of the inner moving door are both slidably connected to the upper track, and the lower end of the outer moving door and the lower end of the inner moving door are both slidably connected to the lower track.

[0008] In a preferred embodiment of the present utility model, the upper track includes an outer groove track and an inner groove track arranged side by side, the upper end of the outer sliding door is connected to the outer load-bearing wheel group, and the outer load-bearing wheel group can be slidably hung in the outer groove track; the upper end of the inner sliding door is connected to the inner load-bearing wheel group, and the inner load-bearing wheel group can be slidably hung in the inner groove track.

[0009] In a preferred embodiment of the present invention, an outer limit stop block for limiting the outer movable door is provided on the outer groove track, and an inner limit stop block for limiting the inner movable door is provided on the inner groove track.

[0010] In a preferred embodiment of the present invention, the width of the outer sliding door is the same as that of the inner sliding door, and a plurality of outer limit stop blocks are provided at intervals along the length direction of the outer groove track, and the interval between the outer sides of two adjacent outer limit stop blocks is equal to twice the width of the outer sliding door; two groups of outer load-bearing wheel groups close to both sides are provided at the upper end of the outer sliding door, and the two groups of outer load-bearing wheel groups are provided between the corresponding two adjacent outer limit stop blocks, and one group of the outer load-bearing wheel groups can abut against one of the outer limit stop blocks when the outer sliding door moves to the first outer limit position, and the other group of the outer load-bearing wheel groups can abut against the other outer limit stop block when the outer sliding door moves to the second outer limit position;

[0011] A plurality of inner limit stop blocks are arranged at intervals along the length direction of the inner groove track, and the number and positions of the inner limit stop blocks correspond to the outer limit stop blocks; two groups of inner load-bearing wheel groups are arranged at the upper end of the inner moving door close to its two sides, and the two groups of inner load-bearing wheel groups are arranged between the corresponding adjacent two inner limit stop blocks, and one group of the inner load-bearing wheel groups can abut against one of the inner limit stop blocks when the inner moving door moves to the first inner limit position, and the other group of the inner load-bearing wheel groups can abut against the other inner limit stop block when the inner moving door moves to the second inner limit position.

[0012] In a preferred embodiment of the present invention, each set of side panel assemblies also includes a support frame and a track beam, the support frame is used to connect to the side wall of the material guide trough of the belt conveyor, the track beam is installed on the side of the support frame, and the upper track is installed at the bottom of the track beam.

[0013] In a preferred embodiment of the present utility model, the lower track includes an outer load-bearing channel steel and an inner load-bearing channel steel arranged side by side, the lower end of the outer sliding door is connected to an outer guide roller, and the outer guide roller can be slidably installed in the outer load-bearing channel steel; the lower end of the inner sliding door is connected to the inner guide roller, and the inner guide roller can be slidably installed in the inner load-bearing channel steel.

[0014] In a preferred embodiment of the present utility model, the outer load-bearing channel steel includes a plurality of outer channel steel rails arranged at intervals along the length direction of the shell structure, and the lower end of the outer movable door is slidably connected to the corresponding outer channel steel rails; the inner load-bearing channel steel includes a plurality of inner channel steel rails arranged at intervals along the length direction of the shell structure, and the lower end of the inner movable door is slidably connected to the corresponding inner channel steel rails.

[0015] In a preferred embodiment of the present invention, an embedded part is connected to the bottom of the lower track.

[0016] In a preferred embodiment of the present invention, an outer side surface of the outer sliding door is provided with an outer embedded door handle, and an inner side surface of the inner sliding door is provided with an inner embedded door handle.

[0017] As described above, the belt conveyor closing device in the utility model can close the belt conveyor through the shell structure formed by the top cover, two sets of side plate components and two end covers, effectively preventing the generation of dust and the spillage of materials, which is more environmentally friendly. At the same time, the side adopts a movable door design, which is simple and practical in structure, easy to open and close, and convenient for operators to enter and exit for maintenance, making it more convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The following drawings are only intended to illustrate and explain the present invention, and do not limit the scope of the present invention.

[0019] Figure 1 : A schematic structural diagram of a belt conveyor closing device cover provided by the utility model being arranged on a belt conveyor.

[0020] Figure 2 : It is a schematic diagram of the cooperation between the outer sliding door and the outer limit stop block provided by the utility model.

[0021] Figure 3 :for Figure 1 A partial enlarged view of the .

[0022] Figure 4 :for Figure 1 Another partial enlargement of .

[0023] Figure 5 : A schematic diagram of the staggered arrangement of the outer sliding door and the inner sliding door provided by the utility model.

[0024] Description of Figure Numbers:

[0025] 01. Belt conveyor; 011. Material guide trough;

[0026] 11. Outer sliding door; 12. Inner sliding door;

[0027] 2. Upper track; 21. Outer groove track; 22. Inner groove track;

[0028] 31. Outer load-bearing wheel set; 32. Inner load-bearing wheel set;

[0029] 4. Outer limit stop block;

[0030] 51. Support frame; 52. Track beam;

[0031] 6. Lower track; 61. Outer side load-bearing channel steel; 62. Inner side load-bearing channel steel;

[0032] 71. Outer guide roller; 72. Inner guide roller;

[0033] 8. Embedded parts;

[0034] 91. External built-in door handle; 92. Internal built-in door handle. DETAILED DESCRIPTION

[0035] In order to have a clearer understanding of the technical features, purposes and effects of the utility model, the specific implementation methods of the utility model are now described with reference to the accompanying drawings.

[0036] like Figures 1 to 5 As shown, the present embodiment provides a belt conveyor closing device, comprising a shell structure which is surrounded by a top cover, two groups of side panel assemblies and two end covers and can be covered on the outside of the belt conveyor 01; each group of side panel assemblies comprises an outer door assembly and an inner door assembly which are arranged side by side along the width direction of the shell structure, the outer door assembly comprises a plurality of outer movable doors 11 which are arranged in sequence along the length direction of the shell structure, the inner door assembly comprises a plurality of inner movable doors 12 which are arranged in sequence along the length direction of the shell structure, and both the outer movable doors 11 and the inner movable doors 12 can move along the length direction of the shell structure; when the side panel assembly is in a closed position, the plurality of outer movable doors 11 and the plurality of inner movable doors 12 are arranged alternately along the length direction of the shell structure, and the side portions of the outer movable doors 11 can be connected with the side portions of the adjacent inner movable doors 12; when the side panel assembly is in an open position, at least one of the outer movable doors 11 can overlap with the adjacent inner movable door 12.

[0037] The above-mentioned shell structure is a rectangular structure, and its length direction is parallel to the conveying direction of the belt conveyor 01. When in use, the bottom of the entire shell structure is fixed to the ground, and enclosed with the ground to form a closed structure, so that the belt conveyor 01 is entirely covered therein. The material guide trough 011 (existing structure) of the belt conveyor 01 can play a primary seal when the belt conveyor 01 conveys materials, reducing the generation of dust and the spilling of materials during material transportation and transportation. The closing device in this embodiment can play a secondary sealing role when the belt conveyor 01 conveys materials, so as to comprehensively prevent the generation of dust and the spilling of materials, and the overall appearance is more beautiful. The side of this closing device is a movable door. When the belt conveyor 01 needs to be inspected and repaired, it is only necessary to open the outer movable door 11 or the inner movable door 12 to facilitate the operator to enter and exit.

[0038] Therefore, the belt conveyor closing device in this embodiment can close the belt conveyor 01 through the shell structure formed by the top cover, two sets of side panel components and two end covers, effectively preventing the generation of dust and the spillage of materials, which is more environmentally friendly. At the same time, the side adopts a movable door design, which is simple and practical in structure, easy to open and close, and convenient for operators to enter and exit for maintenance, making it more convenient to use.

[0039] In a specific implementation, each set of side panel assemblies further includes an upper track 2 and a lower track 6 arranged at intervals from top to bottom, the upper end of the outer moving door 11 and the upper end of the inner moving door 12 are both slidably connected to the upper track 2, and the lower end of the outer moving door 11 and the lower end of the inner moving door 12 are both slidably connected to the lower track 6. The movement of the moving door has a firm track, which is safer and more durable, and is not easy to deform or jam.

[0040] The upper track 2 can be realized as follows: Figure 1 and Figure 3 The upper track 2 includes an outer groove track 21 and an inner groove track 22 arranged side by side. The upper end of the outer movable door 11 is connected to an outer load-bearing wheel group 31, and the outer load-bearing wheel group 31 can be slidably hung in the outer groove track 21; the upper end of the inner movable door 12 is connected to an inner load-bearing wheel group 32, and the inner load-bearing wheel group 32 can be slidably hung in the inner groove track 22.

[0041] It can be understood that the outer groove track 21 and the inner groove track 22 are arranged adjacent to each other, and the side walls of the two can be arranged according to Figure 3 As shown in the figure, the distance between the vertical planes where the outer sliding door 11 and the inner sliding door 12 are located should be small to ensure the sealing effect.

[0042] In order to facilitate the movement of each sliding door, refer to Figure 2An outer limit stop block 4 for limiting the outer moving door 11 is provided on the outer groove track 21, and an inner limit stop block for limiting the inner moving door 12 is provided on the inner groove track 22.

[0043] The number of load-bearing wheel groups and the number and interval of limit stop blocks on each moving door can be determined as needed. For example, in a specific embodiment, the width of the outer moving door 11 is the same as that of the inner moving door 12, and a plurality of outer limit stop blocks 4 are arranged at intervals along the length direction of the outer groove track 21, and the interval between the outer ends of two adjacent outer limit stop blocks 4 is equal to twice the width of the outer moving door 11; two groups of outer load-bearing wheel groups 31 are arranged near the upper end of the outer moving door 11 on both sides thereof, and the two groups of outer load-bearing wheel groups 31 are arranged between the corresponding two adjacent outer limit stop blocks 4, and one group of outer load-bearing wheel groups 31 can abut against one of the outer limit stop blocks 4 when the outer moving door 11 moves to the first outer limit position, and the other group of outer load-bearing wheel groups 31 can abut against the other outer limit stop block 4 when the outer moving door 11 moves to the second outer limit position.

[0044] A plurality of inner limit stop blocks are arranged at intervals along the length direction of the inner groove track 22, the number of the inner limit stop blocks is the same as the outer limit stop block 4, and the positions are arranged opposite to the outer limit stop block 4; two groups of inner load-bearing wheel groups 32 are provided at the upper end of the inner sliding door 12 near its two sides, the two groups of inner load-bearing wheel groups 32 are arranged between the corresponding adjacent two inner limit stop blocks, and one group of the inner load-bearing wheel groups 32 can abut against one of the inner limit stop blocks when the inner sliding door 12 moves to the first inner limit position, and the other group of the inner load-bearing wheel groups 32 can abut against the other inner limit stop block when the inner sliding door 12 moves to the second inner limit position.

[0045] It can be understood that in this embodiment, the distance between the outer load-bearing wheel set 31 on the outer movable door 11 and the corresponding side edge of the outer movable door 11 is the same as the length of the outer limit stop block 4, and the movable door can move at most the distance of one door. When the movable door moves to the corresponding limit position, the outer load-bearing wheel set 31 abuts against the corresponding outer limit stop block 4, referring to Figure 2 At this time, the outer side edge of the outer limit stop block 4 is aligned with the corresponding outer side edge of the outer sliding door 11; the inner sliding door 12 is similar to the outer sliding door 11.

[0046] For example, according to Figure 5In the orientation shown in FIG. 1 , for the outer sliding door 11 and the inner sliding door 12 on the left side, the positions when the outer sliding door 11 is moved to the leftmost and rightmost sides are respectively recorded as the first outer limit position and the second outer limit position, and the positions when the inner sliding door 12 is moved to the leftmost and rightmost sides are respectively recorded as the first inner limit position and the second inner limit position, Figure 5 The figure shows the state where the side panel assembly is in a closed position, with the outer sliding door 11 located at the second outer limit position and the inner sliding door 12 located at the first inner limit position. The outer sliding doors 11 and the inner sliding doors 12 of the side panel assembly are staggered and docked in sequence to form a continuous closed side panel.

[0047] When maintenance is required, the outer sliding door 11 can be slid to the left to the first outer limit position so that it completely overlaps with the inner sliding door 12 on the left. The outer sliding door 11 is opened, and the operator can enter the interior for maintenance. The operator inside can also move the inner sliding door 12 to the right to the second inner limit position to open the inner sliding door 12.

[0048] Of course, the coordinated movement and limiting of the outer sliding door 11, the inner sliding door 12 and the limit stop blocks can also be designed in other ways, as long as the outer sliding door 11 and the inner sliding door 12 can be easily moved separately and do not affect each other and are limited during the movement of the doors. This embodiment is only for illustration.

[0049] Further, in order to facilitate the support and fixation of the upper rail 2, refer to Figure 1 Each set of side panel assemblies further includes a support frame 51 and a track beam 52 . The support frame 51 is used to be connected to the side wall of the material guide trough 011 of the belt conveyor 01 . The track beam 52 is installed on the side of the support frame 51 , and the upper track 2 is installed at the bottom of the track beam 52 .

[0050] The support frame 51 may include, for example, a horizontal frame body, and be fixed to the side wall of the guide trough 011 of the belt conveyor 01; as required, the support frame 51 may also include a plurality of columns arranged at intervals, the top of the columns being connected to the horizontal frame body, and the bottom of the columns being fixed to the ground to ensure the stability of the structure. The track beam 52 is welded and fixed to the top surface of the outer groove track 21 and the top surface of the inner groove track 22, and the support frame 51 is mainly used to support the track beam 52, and then play a supporting role for the upper track 2. Generally, the track beam 52 may include a plurality of cantilever beams arranged at intervals along the length direction of the upper track 2, and the outer groove track 21 and the inner groove track 22 are connected to each cantilever beam. The above-mentioned top cover may be fixedly connected to the top of the track beam 52 or the top of the support frame 51, the upper end of the end cover may be fixedly connected to the end of the top cover, the end of the support frame 51 and the end of the track beam 52, and the lower end of the end cover may be fixed to the ground.

[0051] The lower track 6 can be realized, for example, as follows: Figure 4 The lower track 6 includes an outer load-bearing channel steel 61 and an inner load-bearing channel steel 62 arranged side by side. The lower end of the outer movable door 11 is connected with an outer guide roller 71, which can be slidably installed in the outer load-bearing channel steel 61; the lower end of the inner movable door 12 is connected with an inner guide roller 72, which can be slidably installed in the inner load-bearing channel steel 62. The entire movable door is suspended on the upper track 2, with a load-bearing wheel group installed at the upper end of the movable door and a guide roller installed at the lower end to form a movable part; the load-bearing mainly lies in the load-bearing wheel group at the upper end of the movable door, and the guide roller at the lower end of the movable door mainly plays a guiding role.

[0052] Preferably, the outer grooved track 21 and the inner grooved track 22 are both through-length grooved tracks, i.e., continuous tracks without breaks. The outer load-bearing channel steel 61 includes a plurality of outer channel steel tracks arranged at intervals along the length direction of the shell structure, and the lower end of the outer movable door 11 is slidably connected to the corresponding outer channel steel tracks; the inner load-bearing channel steel 62 includes a plurality of inner channel steel tracks arranged at intervals along the length direction of the shell structure, and the lower end of the inner movable door 12 is slidably connected to the corresponding inner channel steel tracks.

[0053] The load-bearing wheel set and the full-length grooved track at the top can greatly improve the stability and sealing of the moving door during movement. The discontinuous channel steel track at the bottom can play a guiding role, and the discontinuity is convenient for cleaning the inside of the belt closure.

[0054] Generally, an embedded part 8 is connected to the bottom of the lower track 6 .

[0055] There are multiple embedded parts 8, which are arranged at intervals along the length direction of the lower track 6. The embedded parts 8 can be, for example, embedded steel plates. During installation, the embedded parts 8 are embedded in the ground. After the embedded parts 8 are made in advance, the bottom surface of each load-bearing channel steel is welded and fixed to the corresponding embedded parts 8.

[0056] For easy operation, an outer embedded door handle 91 is provided on the outer side surface of the outer sliding door 11 , and an inner embedded door handle 92 is provided on the inner side surface of the inner sliding door 12 .

[0057] The number of handles on each sliding door can be determined according to needs. The embedded door handle can be hidden inside the sliding door or pulled out for the convenience of manual pulling by operators. When in use, when one of the sliding doors is moving, the embedded door handle is pulled out for manual pulling; when not moving, the embedded door handle is embedded inside, and there is no protruding structure on the surface of the sliding door, which does not affect the movement of other sliding doors.

[0058] In summary, the belt conveyor closing device in this embodiment arranges movable doors along the conveying direction of the belt conveyor 01 to form a good closure. The two adjacent outer movable doors 11 and the inner movable door 12 are installed in a staggered manner, and each door can be moved independently without affecting each other during the movement of the doors. When personnel need to enter to inspect the belt conveyor 01, one of the movable doors is opened and moved to one side, and when the inspection is completed, the movable door returns to its original position. The use of movable doors can not only play a good sealing role on the side of the belt conveyor 01, but also is simple to install, convenient to inspect, low in cost, and highly practical.

[0059] The above is only an illustrative embodiment of the utility model, and is not intended to limit the scope of the utility model. Any equivalent changes and modifications made by any technician in the field without departing from the concept and principle of the utility model should fall within the scope of protection of the utility model.

Claims

1. A belt conveyor closing device, It is characterized in that It includes a housing structure formed by a top cover, two sets of side plate assemblies and two end covers and capable of being arranged outside the belt conveyor; Each group of the side panel assemblies includes an outer door assembly and an inner door assembly arranged side by side along the width direction of the shell structure, the outer door assembly includes a plurality of outer sliding doors arranged in sequence along the length direction of the shell structure, and the inner door assembly includes a plurality of inner sliding doors arranged in sequence along the length direction of the shell structure, and both the outer sliding doors and the inner sliding doors can move along the length direction of the shell structure; when the side panel assembly is in a closed position, the plurality of outer sliding doors and the plurality of inner sliding doors are staggered along the length direction of the shell structure, and the side portions of the outer sliding doors can dock with the side portions of the adjacent inner sliding doors; when the side panel assembly is in an open position, at least one of the outer sliding doors can overlap with the adjacent inner sliding door.

2. The belt conveyor closing device according to claim 1, It is characterized in that Each group of the side panel assemblies also includes an upper track and a lower track arranged at intervals up and down, the upper end of the outer moving door and the upper end of the inner moving door are both slidably connected to the upper track, and the lower end of the outer moving door and the lower end of the inner moving door are both slidably connected to the lower track.

3. The belt conveyor closing device according to claim 2, It is characterized in that The upper track includes an outer groove track and an inner groove track arranged side by side, the upper end of the outer sliding door is connected to an outer load-bearing wheel group, and the outer load-bearing wheel group can be slidably hung in the outer groove track; the upper end of the inner sliding door is connected to an inner load-bearing wheel group, and the inner load-bearing wheel group can be slidably hung in the inner groove track.

4. The belt conveyor closing device according to claim 3, It is characterized in that An outer limit stop block for limiting the outer movable door is provided on the outer groove track, and an inner limit stop block for limiting the inner movable door is provided on the inner groove track.

5. The belt conveyor closing device according to claim 4, It is characterized in that The width of the outer sliding door is the same as that of the inner sliding door, and a plurality of outer limit stop blocks are arranged at intervals along the length direction of the outer groove track, and the interval between the outer sides of two adjacent outer limit stop blocks is equal to twice the width of the outer sliding door; two groups of outer load-bearing wheel groups are arranged at the upper end of the outer sliding door near both sides thereof, and the two groups of outer load-bearing wheel groups are arranged between the corresponding two adjacent outer limit stop blocks, and one group of the outer load-bearing wheel groups can abut against one of the outer limit stop blocks when the outer sliding door moves to the first outer limit position, and the other group of the outer load-bearing wheel groups can abut against the other outer limit stop block when the outer sliding door moves to the second outer limit position; A plurality of inner limit stop blocks are arranged at intervals along the length direction of the inner groove track, and the number and positions of the inner limit stop blocks correspond to the outer limit stop blocks; two groups of inner load-bearing wheel groups are arranged at the upper end of the inner sliding door close to both sides thereof, and the two groups of inner load-bearing wheel groups are arranged between two corresponding adjacent inner limit stop blocks, and one group of the inner load-bearing wheel groups can abut against one of the inner limit stop blocks when the inner sliding door moves to the first inner limit position, and the other group of the inner load-bearing wheel groups can abut against the other inner limit stop block when the inner sliding door moves to the second inner limit position.

6. The belt conveyor closing device according to claim 2, It is characterized in that Each set of the side plate assemblies also includes a support frame and a track beam, wherein the support frame is used to be connected to the side wall of the material guide trough of the belt conveyor, the track beam is installed on the side of the support frame, and the upper track is installed at the bottom of the track beam.

7. The belt conveyor closing device according to claim 2, It is characterized in that The lower track includes an outer load-bearing channel steel and an inner load-bearing channel steel arranged side by side. The lower end of the outer sliding door is connected with an outer guide roller, and the outer guide roller can be slidably installed in the outer load-bearing channel steel; the lower end of the inner sliding door is connected with an inner guide roller, and the inner guide roller can be slidably installed in the inner load-bearing channel steel.

8. The belt conveyor closing device according to claim 7, It is characterized in that The outer load-bearing channel steel includes a plurality of outer channel steel rails arranged at intervals along the length direction of the shell structure, and the lower end of the outer movable door is slidably connected to the corresponding outer channel steel rails; the inner load-bearing channel steel includes a plurality of inner channel steel rails arranged at intervals along the length direction of the shell structure, and the lower end of the inner movable door is slidably connected to the corresponding inner channel steel rails.

9. The belt conveyor closing device according to claim 2, It is characterized in that The bottom of the lower track is connected with an embedded part.

10. The belt conveyor closing device according to claim 1, It is characterized in that An outer side surface of the outer sliding door is provided with an outer embedded door handle, and an inner side surface of the inner sliding door is provided with an inner embedded door handle.

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