Annular adhesive tape sealing rotary distributing machine and working method thereof

Abstract

The invention relates to an annular rubber belt sealing rotary distributing machine and a working method thereof, the annular rubber belt sealing rotary distributing machine comprises a rotary distributing machine composed of a rotary frame and a reversible belt conveyor, and further comprises an annular rubber belt, a dust cover and a rubber belt redirection mechanism; an annular discharging port of the storage bin is covered with an annular rubber belt, and when the reversible belt conveyor rotates and moves along with the rotating frame, the front annular rubber belt is lifted upwards under the guide of the rubber belt redirection mechanism, bypasses one side of the corresponding discharging chute and then is laid on the annular discharging port again on the rear portion. The flexible annular rubber belt is adopted to seal the annular discharging port, the annular rubber belt is connected with the reversible belt conveyor through the rubber belt redirection mechanism, when the reversible belt conveyor moves along the annular track along with the reversing frame, the annular discharging port can be reliably sealed, and the walking driving load of the reversing frame cannot be increased.

Description

Technical Field

[0001] The present invention relates to a rotary distributing machine, and particularly to a rotary distributing machine in which the annular material discharging openings of the material distributing layer are sealed by an annular belt. Background Art

[0002] With the increasing environmental protection requirements, during the production process of large top-loading coke ovens, a sealed rotary distributing machine is mostly used for distributing coal at the top of the coal tower of the coke oven. The function of the sealed rotary distributing machine is to evenly distribute the qualified furnace charging coal after coal blending and crushing into the storage tank of the coal tower, improve the filling coefficient of the coal tower, ensure even coal distribution, reduce the segregation of the furnace charging coal in the coal tower, increase the storage capacity of the coal tower, and meet the production needs of the coke oven and environmental protection requirements.

[0003] The sealed rotary distributing machine mainly consists of a rotary frame that can reversibly travel, a reversible belt conveyor, a power supply system, an annular track, a sealing cover, etc. The reversible belt conveyor is installed on the rotary frame that can reversibly travel, is powered by the power supply system, and realizes coal distribution through the forward and reverse operation of the reversible belt conveyor and the reciprocating travel of the rotary frame along the annular track. A closed material guiding trough is provided above the belt surface of the reversible belt conveyor, a head chute and a tail chute are respectively provided at the head and tail of the reversible belt conveyor. When the driving motor of the reversible belt conveyor rotates forward, the furnace charging coal is distributed through the head chute, and when the driving motor of the reversible belt conveyor rotates in reverse, the furnace charging coal is distributed through the tail chute. The furnace charging coal is directly and evenly distributed into the storage tank of the coal tower through two annular material discharging openings inside the annular track.

[0004] The material discharging openings of the sealed rotary distributing machine have a sealing structure. The conventional sealing forms are mainly the following two:

[0005] 1) In the material distributing section, a method of installing an integral sealing cover on the rotary frame that can reversibly travel is adopted to seal the area inside the annular track with the sealing cover, and a rubber sealing curtain is used to seal between the sealing cover and the annular track.

[0006] 2) In the material distributing section, a method of respectively installing two large and small annular sealing covers on the rotary frame that can reversibly travel is adopted to seal the inner regions of the two annular material discharging openings with the corresponding annular sealing covers, and a rubber sealing curtain is used to seal between the corresponding annular sealing cover and the annular material discharging opening.

[0007] The main problems existing in the above two sealing forms are as follows:

[0008] 1) Both the integral sealing cover or the annular sealing cover need to be installed on the rotary frame that can reversibly travel of the rotary distributing machine. The sealing cover and its hanging parts greatly increase the equipment weight of the sealed rotary distributing machine and also increase the traveling driving load.

[0009] 2) The overall sealing cover or the annular sealing cover is installed on the reversibly moving rotary frame, and there is a relatively moving sealing structure between it and the annular blanking port. The sealing effect of the relatively moving sealing structure is not ideal. The rubber sealing curtain is prone to breakage due to friction during movement, and there are potential safety hazards. Summary of the Invention

[0010] The present invention provides an annular belt-sealed rotary batching machine and its working method. A flexible annular belt is used to seal the annular blanking port. The annular belt is connected to the reversible belt conveyor through a belt redirecting mechanism. When the reversible belt conveyor moves along the annular track with the rotary frame, it can reliably seal the annular blanking port and will not increase the running drive load of the rotary frame.

[0011] In order to achieve the above object, the present invention is implemented by adopting the following technical solutions:

[0012] An annular belt-sealed rotary batching machine is provided on the top of a storage bin, and includes a rotary batching machine composed of a rotary frame and a reversible belt conveyor; two annular blanking ports and an annular track are provided on the top of the storage bin; the rotary frame can rotate and move along the annular track with the axis of the storage bin as the center, the reversible belt conveyor is arranged on the rotary frame, and two blanking ends of the reversible belt conveyor are respectively provided with blanking chutes, and the two blanking chutes are respectively located directly above the corresponding annular blanking ports; annular belts are respectively covered on the two annular blanking ports, and the rotary batching machine is also provided with two dust covers and two groups of belt redirecting mechanisms; the dust covers are arranged at the bottoms of the corresponding blanking chutes, and there is a gap between the bottom edges of the dust covers and the top surfaces of the corresponding annular blanking ports and are sealed by flexible dust-proof strips; the belt redirecting mechanisms are arranged on the corresponding blanking chutes and dust covers; when the reversible belt conveyor rotates and moves with the rotary frame, along the moving direction, the annular belt in front of the reversible belt conveyor is lifted upward under the guidance of the belt redirecting mechanism, bypasses from one side of the corresponding blanking chute, and then is re-laid on the annular blanking port behind the reversible belt conveyor.

[0013] Further, the storage bin is the coal tower of a coke oven, a storage tank is arranged in the coal tower, and the two annular blanking ports are both arranged above the storage tank.

[0014] Further, an annular belt-sealed rotary batching machine further includes a control system; the driving ends of the rotary frame and the reversible belt conveyor are respectively connected to the control system.

[0015] Further, the tape redirecting mechanism is composed of a horizontal section guide roller, a redirecting guide roller, a vertical section guide roller and a supporting roller; corresponding to the moving direction of the reversible belt conveyor, one set of horizontal section guide rollers is arranged on each side of the dust cover; one set of redirecting guide rollers is arranged on each side of the blanking chute; one set of vertical section guide rollers and one set of supporting rollers are arranged at the outer ends of the blanking chute between the two sets of redirecting guide rollers; the annular tape is introduced from the horizontal section guide roller on one side, is changed from the horizontal state to the vertical state by the corresponding side's redirecting guide roller, then is guided by the vertical section guide roller and the supporting roller to reach the other side, is changed from the vertical state to the horizontal state by the redirecting guide roller on the other side, and finally is led out from the horizontal section guide roller on the corresponding side.

[0016] Further, the horizontal section guide roller is composed of at least 3 horizontal guide rollers, and in the direction from far away from the dust cover to close to the dust cover, the heights of the horizontal guide rollers increase in turn.

[0017] Further, the redirecting guide roller is inclined.

[0018] Further, the vertical section guide roller is composed of a plurality of vertical inner guide rollers and vertical outer guide rollers arranged at intervals along the moving direction of the annular tape; the supporting rollers are multiple and are arranged between the vertical inner guide rollers and the vertical outer guide rollers for supporting the bottom of the annular tape in the vertical state.

[0019] Further, V-shaped tape cleaners are respectively installed on the outer sides of the dust cover at the corresponding two-side horizontal section guide rollers.

[0020] Further, blanking port cleaners are respectively installed on the inner walls of the bottom of the dust cover close to the two-side horizontal section guide rollers, and cleaning alarms are respectively installed on the upper parts of the outer sides of the corresponding dust covers; the blanking port cleaners are provided with strain gauge pressure sensors, and the signal output ends of the strain gauge pressure sensors are connected with the triggering ends of the cleaning alarms.

[0021] A working method of a rotary distributing machine sealed by an annular belt includes the following processes: When the material level in the storage bin is lower than the set lower limit of the material level, the level gauge sends a loading signal to the control system. The control system sends an interlock start signal to the rotary distributing machine sealed by the annular belt. First, a forward or reverse command is sent to the drive motor of the reversible belt conveyor and power is supplied to start it. Then, a forward or reverse command is sent to the traveling motor of the rotary frame and power is supplied to start it. The rotary frame rotates and moves along the annular track with the axis of the storage bin as the center. The material transported by the belt conveyor above the rotary distributing machine falls onto the belt surface of the reversible belt conveyor below through the chute at the head of the belt conveyor, and then falls into the storage bin below the corresponding annular discharge opening through the discharge chute at one end of the reversible belt conveyor. During the process of the rotary distributing machine rotating and traveling along the annular track for uniform material distribution, the annular discharge opening is covered and sealed by a dust-proof cover at the discharging position, and the remaining area of the annular discharge opening is covered and sealed by the annular belt in the other parts. When the dust-proof cover passes by, the annular belt is rolled up by the belt redirecting mechanism and bypasses from one side of the discharge chute, and then falls back to its original position. Before the annular belt enters the belt redirecting mechanism, the material adhered to the annular belt is cleaned by a V-shaped belt cleaner to prevent it from being brought into the belt redirecting mechanism. The material scattered on the edge of the annular discharge opening during discharging through the discharge chute is swept into the annular discharge opening by the discharge opening cleaner to prevent the material from adhering to the annular belt and affecting the sealing effect. When the discharge opening cleaner encounters materials that are difficult to clean, the strain gauge pressure sensor sends a signal, and an alarm is issued through the cleaning alarm to remind the on-site staff to clean up in time.

[0022] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0023] 1) The annular discharge opening is sealed by a flexible annular belt. Except for the part of the annular discharge opening covered by the dust-proof cover in the dust-proof cover area, the rest is covered by the annular belt, so as to achieve effective sealing during mobile discharging.

[0024] 2) The annular belt is connected to the reversible belt conveyor through the belt redirecting mechanism. Only part of the weight of the annular belt (dust-proof cover area) is borne by the rotary frame, and the weight of the rest of the annular belt is borne by the top structure of the coal tower around the annular discharge opening. Compared with the sealing structure of the conventional sealed rotary distributing machine, the overall weight of the rotary distributing machine is greatly reduced, and at the same time, the driving load of the rotary frame traveling is reduced.

[0025] 3) Compared with the method of installing a rigid sealing cover on the reversibly traveling rotary frame, the present invention uses a flexible annular belt to achieve sealing, avoiding the possible hard interference phenomenon between two relatively moving devices, and ensuring the safe and reliable operation of the sealed rotary distributing machine.

[0026] 4) The annular blanking opening is sealed with an annular tape, which has a simple structure and good sealing effect, can effectively prevent dust and particulate matter from overflowing, and is beneficial to environmental protection. Description of the Drawings

[0027] Figure 1 It is an installation schematic diagram of the rotary distributing machine sealed with the annular tape of the present invention.

[0028] Figure 2 is Figure 1 the top view of

[0029] Figure 3 is Figure 1 the side view of

[0030] Figure 4 It is a layout schematic diagram of the annular tape of the present invention.

[0031] Figure 5 It is the front view of the annular tape sealing structure of the present invention.

[0032] Figure 6 is Figure 5 the right view of

[0033] Figure 7 It is the top view of the annular tape sealing structure of the present invention.

[0034] In the figure: 1. Annular track; 2. Rotary frame; 3. Reversible belt conveyor; 4. Blanking chute; 5. Belt redirecting mechanism; 51. Horizontal section guide roller; 52. Redirecting guide roller; 53. Vertical section guide roller; 54. Support roller; 6. Power supply system; 7. Annular tape; 8. Cleaning alarm; 9. Dust cover; 10. V-shaped belt cleaner; 11. Blanking opening cleaner. Detailed Embodiments

[0035] The following further describes the detailed embodiments of the present invention with reference to the drawings:

[0036] As Figures 1 - 3 shown, a rotary distributing machine sealed with an annular tape according to the present invention is arranged on the top of a storage bin and includes a rotary distributing machine composed of a rotary frame 2 and a reversible belt conveyor 3; two annular blanking openings and an annular track 1 are arranged on the top of the storage bin; the rotary frame 2 can rotate and move along the annular track 1 with the axis of the storage bin as the center, the reversible belt conveyor 3 is arranged on the rotary frame 2, and two blanking ends of the reversible belt conveyor 3 are respectively provided with blanking chutes 4, and the two blanking chutes 4 are respectively located directly above the corresponding annular blanking openings; the two annular blanking openings are respectively covered with an annular tape 7 (as Figure 4As shown in the figure, the rotary distributing machine is also provided with 2 dust covers 9 and 2 groups of belt redirecting mechanisms 5; the dust covers 9 are arranged at the bottoms of the corresponding blanking chutes 4, and there is a gap between the bottom edges of the dust covers 9 and the top surfaces of the corresponding annular blanking openings and they are sealed by flexible dust-proof strips; the belt redirecting mechanisms 5 are arranged on the corresponding blanking chutes 4 and dust covers 9; when the reversible belt conveyor 3 rotates and moves with the rotary frame 2, along the moving direction, the annular belt 7 in front of the reversible belt conveyor 3 is lifted upward under the guidance of the belt redirecting mechanism 5, bypasses from one side of the corresponding blanking chute 4, and then is re-laid on the annular blanking opening behind the reversible belt conveyor 3.

[0037] Further, the storage bin is the coal tower of the coke oven, and a storage tank is arranged in the coal tower, and both of the 2 annular blanking openings are arranged above the storage tank.

[0038] Further, an annular belt sealed rotary distributing machine further includes a control system; the driving ends of the rotary frame 2 and the reversible belt conveyor 3 are respectively connected to the control system.

[0039] Further, as Figures 5 - 7 shown, the belt redirecting mechanism 5 is composed of a horizontal section guide roller 51, a redirecting guide roller 52, a vertical section guide roller 53 and a supporting roller 54; corresponding to the moving direction of the reversible belt conveyor 3, 1 group of horizontal section guide rollers 51 are respectively arranged on both sides of the dust cover 9; 1 group of redirecting guide rollers 52 are respectively arranged on both sides of the blanking chute 4; 1 group of vertical section guide rollers 53 and 1 group of supporting rollers 54 are respectively arranged at the outer ends of the blanking chute 4 between the 2 groups of redirecting guide rollers 52; the annular belt 7 is introduced from the horizontal section guide roller 51 on one side, is changed from the horizontal state to the vertical state by the corresponding side's redirecting guide roller 52, then is guided by the vertical section guide roller 53 and the supporting roller 54 to reach the other side, is changed from the vertical state to the horizontal state by the other side's redirecting guide roller 52, and finally is led out from the horizontal section guide roller 51 on the corresponding side.

[0040] Further, the horizontal section guide roller 51 is at least composed of 3 horizontal guide rollers, and in the direction from far away from the dust cover 9 to close to the dust cover 9, the heights of the horizontal guide rollers increase in sequence.

[0041] Further, the redirecting guide roller 52 is inclined.

[0042] Further, the vertical section guide roller 53 is composed of a plurality of vertical inner guide rollers and vertical outer guide rollers arranged at intervals along the moving direction of the annular belt 7; there are a plurality of the supporting rollers 54, which are arranged between the vertical inner guide rollers and the vertical outer guide rollers and are used for supporting the bottom of the annular belt 7 in the vertical state.

[0043] Further, V-shaped belt cleaners 10 are respectively installed on the outer sides of the dust cover 9 at the corresponding two sides of the horizontal section guide rollers 51.

[0044] Furthermore, a feed port cleaner 11 is installed on the inner wall of the horizontal guide rollers 51 on both sides of the bottom of the dust cover 9, and a cleaning alarm 8 is installed on the upper outer side of the dust cover 9 on the corresponding side; the feed port cleaner 11 is provided with a strain gauge pressure sensor, and the signal output end of the strain gauge pressure sensor is connected to the trigger end of the cleaning alarm 8.

[0045] The annular tape sealed rotary material distributor of the present invention comprises a reversible rotary frame 2 conventionally provided in a rotary material distributor, a reversible belt conveyor 3 arranged on the rotary frame 2 (reversible belt conveyor 3 has material discharge chutes 4 at both ends), an annular track 1 arranged on the top of the storage bin, a power supply system 6 for supplying power to all electrical devices, etc. The difference from the conventional sealed rotary material distributor is that the present invention uses an annular tape 7 to achieve the sealing of the two annular discharge ports on the top of the storage bin.

[0046] The storage bin described in the present invention mainly refers to the coal tower matched with the coke oven. The circular track 1 is laid on the floor of the top of the coal tower with the axis of the coal tower as the center, and the rotating frame 2 rotates along the circular track 1. The reversible belt conveyor 3 is installed on the rotating frame 2 and moves with it.

[0047] The annular belt sealed rotary feeder of the present invention is provided with a belt redirecting mechanism 5 to achieve sealing in the form of an annular belt, and a dust cover 9 is provided on the discharge chute 4 of the reversible belt conveyor 3. In addition, a V-shaped belt cleaner 10, a discharge port cleaner 11 and a cleaning alarm 8 can be optionally configured.

[0048] The dust cover 9 is installed at the bottom of the material discharge chute 4 at both ends of the reversible belt conveyor 3, and a flexible dustproof strip is arranged on the bottom edge thereof to achieve sealing between the dust cover 9 and the annular material discharge port during movement.

[0049] The belt redirecting mechanism 5 is composed of a horizontal guide roller 51, a redirecting guide roller 52, a vertical guide roller 53 and a support roller 54; when the reversible belt conveyor 3 rotates and moves with the revolving frame 2, along the moving direction, the annular belt 7 in front of the reversible belt conveyor 3 is lifted upward under the guidance of the belt redirecting mechanism 5, bypasses from the side of the corresponding discharge chute 4, and then is re-laid on the annular discharge port at the rear of the reversible belt conveyor 3.

[0050] The V-belt cleaner 10 is installed on the lower outer side of the dust cover 9; the feed port cleaner 11 is installed on the inner bottom side of the dust cover 9; the cleaning alarm 8 is installed on the upper outer side of the dust cover 9, and the cleaning alarm 8 is powered by the power supply system 6 of the rotary material placing machine, and its trigger end is electrically connected to the signal output end of the strain gauge pressure sensor installed on the feed port cleaner 11.

[0051] The working process of the ring tape-sealed rotary distributing machine of the present invention is as follows: when the material level in the storage bin is lower than the set lower limit, the level gauge sends a loading signal to the control system. The control system sends an interlock start signal to the ring tape-sealed rotary distributing machine. First, a forward or reverse command is sent to the drive motor of the reversible belt conveyor 3 and power is supplied to start it. Then, a forward or reverse command is sent to the traveling motor of the rotary frame 2 and power is supplied to start it. The rotary frame 3 rotates and moves along the circular track 1 with the axis of the storage bin as the center. The material transported by the belt conveyor above the rotary distributing machine falls onto the belt surface of the reversible belt conveyor 3 below through the chute at the head of the belt conveyor, and then falls into the storage bin below the corresponding circular discharge opening through the discharge chute 4 at one end of the reversible belt conveyor 3. During the process of the rotary distributing machine rotating and traveling along the circular track 1 for uniform material distribution, the discharge area is covered and sealed by the dust-proof cover 9 above the circular discharge opening, and the remaining area of the circular discharge opening is covered and sealed by the ring tape 7 in the remaining parts. Wherever the dust-proof cover 9 passes, the ring tape 7 is rolled up by the tape redirecting mechanism 5 and bypasses from one side of the discharge chute 4, and then falls back to its original position.

[0052] Before the ring tape 7 enters the tape redirecting mechanism 5, the material adhered to the ring tape 7 is cleaned by the V-shaped tape cleaner 10 to prevent it from being brought into the tape redirecting mechanism 5. The material scattered on the edge of the circular discharge opening during discharging through the discharge chute 4 is swept into the circular discharge opening by the discharge opening cleaner 11 to prevent the material from adhering to the ring tape 7 and affecting the sealing effect. When the discharge opening cleaner 11 encounters difficult-to-remove material, the strain gauge pressure sensor sends a signal, and an alarm is issued through the cleaning alarm 8 to remind the on-site staff to clean it in time.

[0053] The above is only the preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and its concept of the present invention, makes equivalent replacements or changes, and all should be covered within the protection scope of the present invention.

Claims

1. An annular tape sealed rotary material distributor, arranged on the top of a storage bin, comprises a rotary material distributor consisting of a rotary frame and a reversible belt conveyor; the top of the storage bin is provided with two annular discharge ports and an annular track; the rotary frame can rotate and move along the annular track with the axis of the storage bin as the center, the reversible belt conveyor is arranged on the rotary frame, and the two discharge ends of the reversible belt conveyor are respectively provided with discharge chutes, and the two discharge chutes are respectively located directly above the corresponding annular discharge ports; it is characterized in that The two annular discharge ports are respectively covered with annular tapes, and the rotary feeder is also provided with two dust covers and two sets of tape redirecting mechanisms; the dust cover is arranged at the bottom of the corresponding discharge chute, and a gap is left between the bottom edge of the dust cover and the top surface of the corresponding annular discharge port and is sealed by a flexible dust strip; the tape redirecting mechanism is arranged on the corresponding discharge chute and the dust cover; when the reversible belt conveyor rotates and moves with the rotary frame, along the moving direction, the annular tape in front of the reversible belt conveyor is lifted up under the guidance of the tape redirecting mechanism, bypasses from one side of the corresponding discharge chute, and then is re-laid on the annular discharge port at the rear of the reversible belt conveyor.

2. The endless tape sealing rotary material distributing machine according to claim 1, characterized in that: The storage bin is a coal tower of a coke oven, a storage tank is arranged inside the coal tower, and two annular discharge ports are arranged above the storage tank.

3. The endless tape sealing rotary material distributing machine according to claim 1, characterized in that: It also includes a control system; the driving end of the rotary frame and the driving end of the reversible belt conveyor are respectively connected to the control system.

4. The endless tape sealing rotary material distributing machine according to claim 1, characterized in that: The belt redirecting mechanism is composed of horizontal guide rollers, redirecting guide rollers, vertical guide rollers and supporting rollers; corresponding to the moving direction of the reversible belt conveyor, a group of horizontal guide rollers are respectively arranged on both sides of the dust cover; a group of redirecting guide rollers are respectively arranged on both sides of the unloading chute; a group of vertical guide rollers and a group of supporting rollers are respectively arranged at the outer end of the unloading chute between the two groups of redirecting guide rollers; the endless belt is introduced from the horizontal guide roller on one side, changed from the horizontal state to the vertical state through the redirecting guide roller on the corresponding side, and then guided to the other side through the vertical guide roller and supporting rollers, changed from the vertical state to the horizontal state through the redirecting guide roller on the other side, and finally led out from the horizontal guide roller on the corresponding side.

5. The endless tape sealing rotary material distributing machine according to claim 4, characterized in that: The horizontal section guide rollers are composed of at least three horizontal guide rollers, and the heights of the horizontal guide rollers increase in sequence from a direction away from the dust cover to a direction close to the dust cover.

6. The endless tape sealing rotary material distributing machine according to claim 4, characterized in that: The redirecting guide roller is arranged obliquely.

7. The endless tape sealing rotary material distributing machine according to claim 4, characterized in that: The vertical guide roller is composed of a plurality of vertical inner guide rollers and a vertical outer guide roller arranged at intervals along the moving direction of the endless belt; the supporting rollers are multiple and are arranged between the vertical inner guide roller and the vertical outer guide roller to support the bottom of the endless belt in a vertical state.

8. The endless tape sealing rotary material distributing machine according to claim 4, characterized in that: V-shaped belt cleaners are respectively installed on the outer sides of the dust cover at the corresponding horizontal section guide rollers on both sides.

9. The endless tape sealing rotary material distributing machine according to claim 4, characterized in that: A feed port cleaner is installed on the inner wall of the horizontal guide rollers on both sides of the bottom of the dust cover, and a cleaning alarm is installed on the upper outer side of the dust cover on the corresponding side; the feed port cleaner is provided with a strain gauge pressure sensor, and the signal output end of the strain gauge pressure sensor is connected to the trigger end of the cleaning alarm.

10. A method for operating the endless belt sealing rotary material distribution machine as claimed in any one of claims 1 to 9, characterized in that: The process includes the following: when the material level in the storage bin is lower than the set lower limit, the level meter sends a loading signal to the control system, and the control system sends an interlocking start signal to the annular belt-sealed rotary feeder, first sending a forward or reverse command to the drive motor of the reversible belt conveyor and powering it on, and then sending a forward or reverse command to the travel motor of the rotary frame and powering it on; the rotary frame rotates and moves along the circular track with the axis of the storage bin as the center; the material transported by the belt conveyor above the rotary feeder falls onto the belt surface of the reversible belt conveyor below through the head chute of the belt conveyor, and then falls from the discharge chute at one end of the reversible belt conveyor to the storage bin below the corresponding annular discharge port; in the process of the rotary feeder rotating and running along the circular track to evenly distribute the material, the discharge place is covered with a dust cover The upper part of the annular discharge port is covered and sealed, and the rest of the area of ​​the annular discharge port is covered and sealed by annular tape; where the dust cover passes, the annular tape is rolled up by the tape redirecting mechanism and bypasses from one side of the discharge chute, and then falls back to its original position; before the annular tape enters the tape redirecting mechanism, the V-shaped tape cleaner cleans the material adhering to the annular tape to prevent it from being brought into the tape redirecting mechanism; and when the material is discharged through the discharge chute, the material scattered on the edge of the annular discharge port is swept into the annular discharge port by the discharge port cleaner to prevent the material from sticking to the annular tape and affecting the sealing effect; when the discharge port cleaner encounters material that is difficult to remove, the strain gauge pressure sensor sends a signal, and an alarm is sounded through the cleaning alarm to remind the on-site staff to clean it up in time.

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