Recycling system for dust remover and dust removal system

Abstract

The invention relates to a recovery system for a dust remover and a dust removal system.The recovery system for the dust remover comprises a first spiral conveying device, the first spiral conveying device is horizontally or basically horizontally arranged, and the first spiral conveying device comprises a first shell and a first spiral conveyor arranged in the first shell; the first shell is provided with a feeding port communicated with an outlet of the dust remover and a discharging port for discharging materials, and the first spiral conveyor is used for conveying the materials to the discharging port; and the second spiral conveying device gradually inclines upwards in the conveying direction of the materials of the second spiral conveying device, the second spiral conveying device comprises a second shell and a second spiral conveyor arranged in the second shell, and the second shell is provided with a feeding port communicated with the discharging port and a discharging port used for being communicated with a recycling device. In the whole material collecting process, manual carrying to the needed position is not needed, and time and labor are saved.

Description

Technical Field

[0001] This application relates to the field of recycling equipment technology, and in particular to a recycling system and a dust removal system for a dust collector. Background Technology

[0002] In the cigarette manufacturing process, dust collectors are used to remove dust, and the material after being processed by the dust collector needs to be cleaned.

[0003] Currently, temporary material collection is usually done manually. Specifically, a plastic bucket is placed below the dust collector's outlet. When the discharge valve at the dust collector's outlet is opened, the material will fall directly into the collection bucket through the outlet, and then the collection box is manually moved to the required location.

[0004] However, during the entire temporary material collection process, relying on manual ash collection requires staff to continuously collect ash, change collection buckets, and move the full collection buckets to the required location, which is time-consuming and labor-intensive. Summary of the Invention

[0005] Therefore, it is necessary to provide a recycling system and a dust removal system for a dust collector to solve the time-consuming and labor-intensive technical problems caused by temporary material collection in the prior art.

[0006] In a first aspect, this application provides a recycling system for a dust collector, including a first screw conveyor arranged horizontally or substantially horizontally. The first screw conveyor includes a first housing and a first screw conveyor, with at least a portion of the first screw conveyor disposed within the first housing. The first housing has an inlet connected to the outlet of the dust collector and an outlet for discharging material. The first screw conveyor is used to convey material to the outlet. A second screw conveyor is gradually inclined upward along its own material conveying direction. The second screw conveyor includes a second housing and a second screw conveyor, with at least a portion of the second screw conveyor disposed within the second housing. The second housing has an inlet connected to the outlet and a discharge port connected to a recycling device.

[0007] In one embodiment, at least one of the first and second housings is provided with a handle.

[0008] And / or, at least one of the first housing and the second housing is provided with a viewing window for observation.

[0009] In one of the embodiments, the second screw conveyor comprises a second transmission shaft, a second screw blade arranged on the outer wall of the transmission shaft and located in the second shell, and a second driving motor for driving the second transmission shaft to rotate, the recycling system further comprises a controller, a second prompter and a detector for detecting the rotating speed of the second transmission shaft, the signal input end of the controller is electrically connected with the signal output end of the detector and is configured to control the second prompter to send a failure signal when the detector detects that the speed is lower than a preset speed.

[0010] In one of the embodiments, a recycling device is arranged below the material dropping port, the recycling device comprises a shell and a material collecting box arranged in the shell, and the material dropping port is in communication with the inner cavity of the material collecting box.

[0011] In one of the embodiments, a flexible joint is arranged at the material dropping port, a flexible pipe is arranged in sealing connection with the flexible joint, the inner cavity of the flexible joint is in communication with the inner cavity of the flexible pipe to form a flow channel, the recycling system further comprises a first control valve for controlling the opening and closing of the flow channel, the inner cavity of the material collecting box is in communication with the flexible pipe, and the peripheral wall of the shell is provided with an opening for the material collecting box to enter and exit.

[0012] In one of the embodiments, the recycling system further comprises a first material level sensor and a first prompter, the first material level sensor is arranged in the recycling device, the signal output end of the first material level sensor is electrically connected with the signal input end of the controller, and the controller is configured to control the first prompter to send a signal for replacing the material collecting box when the first material level sensor detects that the material height in the material collecting box is higher than a preset position.

[0013] In one of the embodiments, the recycling system further comprises a vibrating device for vibrating the recycling device, and the vibrating device is connected with the recycling device.

[0014] In one of the embodiments, the vibrating device comprises a vibrating motor and an elastic member, the vibrating motor is located below the recycling device, the eccentric block of the vibrating motor abuts against the recycling device, and the elastic member is arranged below the recycling device to make the recycling device have a tendency to move upward.

[0015] In the second aspect, the application provides a dust removal system, which comprises a dust remover and the recycling system of any one of the embodiments, and the outlet of the dust remover is in communication with the material inlet of the recycling system.

[0016] And / or, the dust collector comprises at least two discharge hoppers, the at least two discharge hoppers are arranged at intervals along the length direction of the first screw conveyor, and each of the dust collectors corresponds to one of the material inlets.

[0017] In one of the embodiments, the dust collector comprises a cleaning device and a discharge hopper, the discharge hopper is provided with a second material level sensor, the signal output end of the second material level sensor is electrically connected to the signal input end of the controller, the signal output end of the controller is electrically connected to the cleaning device, and the controller is configured to control the cleaning device to clean the discharge hopper when the second material level sensor detects that the material position in the discharge hopper is higher than a preset position and a blockage occurs.

[0018] Compared with the prior art, the recycling system provided by the application has the following advantages:

[0019] The material falling through the discharge port of the dust collector enters the horizontally arranged first screw conveyor, and under the conveying action of the first screw conveyor, the material is conveyed to the discharge port, and the second screw conveyor is arranged upwardly and obliquely to facilitate the cooperation of the recycling device with the discharge port of the second screw conveyor, so that the material is automatically conveyed to the recycling device at the required position by the second screw conveyor, and the whole material collecting process does not need manual carrying to the required position, saving time and effort. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0021] Figure 1 It is a perspective view of the dust removal system of one embodiment of the application.

[0022] Figure 2 It is a structural schematic view of another angle of Figure 1

[0023] Figure 3 It is a structural schematic view of the recycling device of one embodiment of the application.

[0024] ​100, recycling system; 200, dust removal system; 1, first screw conveying device; 11, first shell; 111, first casing; 112, first cover plate; 1121, first handle part; 1122, first window; 113, first joint; 12, first screw conveyor; 121, first transmission shaft; 123, first driving motor; 2, second screw conveying device; 21, second shell; 211, second casing; 212, second cover plate; 2121, second handle part; 2122, second window; 213, flexible joint; 22, second screw conveyor; 221, second transmission shaft; 223, second driving motor; 3, recycling device; 31, casing; 311, hose; 32, material collecting box; 321, first material level sensor; 4, dust remover; 41, discharge hopper; 412, second material level sensor; 413, second gate valve; 414, first joint; 5, detector; 6, ring blowing device; 61, nozzle; 7, first gate valve; 8, vibrating device; 81, vibrating motor; 82, spring; 9, support. DETAILED DESCRIPTION

[0025] In order to make the above objectives, features and advantages of the present application more clear and easily understood, the specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the following description, a lot of specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be implemented in many different ways other than the ways described herein, and one of ordinary skill in the art can make similar improvements without departing from the spirit of the present application, and therefore the present application is not limited to the specific embodiments disclosed below.

[0026] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on the other component or there can be a middle component. When a component is referred to as being "connected to" another component, it can be directly connected to the other component or there can be a middle component. The terms "vertical", "horizontal", "upper", "lower", "left", "right", "side", "top", "bottom" and similar expressions used in the description of the present application are used only to describe various example structural parts and elements of the present application, but are used only for the purpose of convenience of explanation, and are determined based on the example orientation shown in the drawings, and do not mean the only embodiment. Since the embodiments disclosed in the present application can be arranged in different directions, these terms indicating the direction are used only for the purpose of explanation and should not be considered as limiting, such as "upper" and "lower" are not necessarily limited to the direction opposite or consistent with the direction of gravity.

[0027] In addition, the terms "first", "second", etc. are used only for descriptive purposes and do not connote or imply relative importance or a quantity of the indicated technical features. Thus, a feature defined with "first", "second", etc. can include at least one of the features explicitly or implicitly. In the description of the present application, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless otherwise explicitly and specifically limited.

[0028] In the present application, unless otherwise explicitly specified and limited, the "on", "under", "above" and "over" of the first feature to the second feature can be that the first feature is in direct contact with the second feature, or the first feature is indirectly in contact with the second feature through an intermediate medium. Moreover, the "on", "above" and "over" of the first feature to the second feature can be that the first feature is directly above or obliquely above the second feature, or only means that the first feature is horizontally higher than the second feature. The "under", "below" and "under" of the first feature to the second feature can be that the first feature is directly below or obliquely below the second feature, or only means that the first feature is horizontally lower than the second feature.

[0029] It should be noted that "axial arrangement" means that the overall arrangement direction is along the axial direction, including but not limited to axial extension, which can be at an angle with the axial direction. "Inter-angled" means an angle other than 0° and 180°, which can be understood as intersecting.

[0030] Unless otherwise defined, all technical and scientific terms used in the specification of the present application have the same meaning as understood by those skilled in the art to which the present application belongs. The terms used in the specification of the present application are only for the purpose of describing the specific embodiments and are not intended to limit the present application. The term "and / or" used in the specification of the present application includes any and all combinations of one or more related listed items.

[0031] Since the existing dust collector 4 directly discharges material into the dust removal room, there is more dust and dust in the field of the dust removal room. Therefore, as shown in Figures 1-3 , the present application discloses a recycling system for a dust collector. The recycling system 100 comprises a first screw conveyor 1, a second screw conveyor 2 and a recycling device 3.

[0032] As shown in Figure 1 and Figure 2 , the first screw conveyor 1 is arranged substantially horizontally, and the first screw conveyor 1 comprises a first housing 11 and a first screw conveyor 12, at least part of the first screw conveyor 12 is arranged in the first housing 11. Specifically, as shown in Figure 1 and Figure 2As shown, the first screw conveyor 12 comprises a first transmission shaft 121, first screw blades (not shown in the figure) and a first driving motor 123. The first screw blades are arranged on the outer circumferential wall of the first transmission shaft 121 and located in the first housing 11, and the first driving motor 123 is located outside the first housing 11 and drivingly connected with the first transmission shaft 121 to drive the first transmission shaft 121 to rotate.

[0033] The first housing 11 is provided with a material inlet communicated with the outlet of the dust collector 4 and a material outlet for discharging the material, and the first screw conveyor 12 is used to convey the material to the material outlet. In this way, the material (such as soot) discharged from the outlet of the dust collector 4 is received by the material inlet, and then the material is conveyed to the material outlet under the driving of the first screw conveyor 12.

[0034] It should be noted that the second screw conveying device 2 is gradually inclined upward along the conveying direction of the material itself, and the second screw conveying device 2 comprises a second housing 21 and a second screw conveyor 22. At least part of the second screw conveyor 22 is arranged in the second housing 21. Specifically, the second screw conveyor 22 comprises a second transmission shaft 221, second screw blades (not shown in the figure) and a second driving motor 223. The second screw blades are arranged on the outer circumferential wall of the second transmission shaft 221 and located in the second housing 21. The second driving motor 223 is located outside the second housing 21 to drive the second transmission shaft 221 to rotate.

[0035] The second housing 21 is provided with a material inlet communicated with the material outlet and a material dropping opening communicated with the recycling device 3. When the material entering through the material inlet moves to the material dropping opening under the conveying of the second screw conveyor 22, the second screw conveying device 2 is inclined upward, which raises the position of the material dropping opening, avoiding the situation that the recycling device 3 cannot be installed due to the high height of the recycling device 3, so as to achieve the purpose of facilitating the installation of the recycling device 3.

[0036] The material falling through the material outlet of the dust collector 4 enters the horizontally arranged first screw conveying device 1, and under the conveying action of the first screw conveyor 12, the material is conveyed to the material outlet. The second screw conveying device 2 is arranged upwardly inclined, so as to facilitate the cooperation of the recycling device 3 with the material dropping opening of the second screw conveying device 2. In this way, the material is automatically conveyed to the recycling device 3 at the required position through the second screw conveying device 2, and the whole material collecting process does not need manual carrying to the required position, which saves time and effort, reduces the labor intensity of workers and improves the on-site environment.

[0037] It should be noted that, as Figure 1As shown, the discharge port is provided with a soft first joint 414, and the feeding port is provided with a soft second joint 113. The first joint 414 is in sealing connection with the second joint 113 and is in communication with the second joint 113. In this way, the material is prevented from escaping between the discharge port and the feeding port. In particular, the first shell 11 is provided with a handle portion. The handle portion provided on the first shell 11 is defined as a first handle portion 1121. Specifically, the first shell 11 comprises a first shell body 111 and a first cover plate 112. The discharge port is formed in the first shell body 111. The first shell body 111 is provided with a first opening at the top. The first cover plate 112 is detachably mounted on the first opening.

[0038] When the first cover plate 112 is in a detached state, the first screw conveyor 12 in the first shell 11 can be maintained or replaced through the first opening. In addition, the first cover plate 112 is provided with a window for observing the first screw conveyor 12 in the first shell 11. The window is defined as a first window 1122.

[0039] In addition, the second shell 21 is provided with a handle portion. As shown, Figure 1 The handle portion provided on the second shell 21 is defined as a second handle portion 2121. Specifically, the second shell 21 comprises a second shell body 211 and a second cover plate 212. The feeding port is formed in the second shell body 211. The second shell body 211 is provided with a second opening. The second cover plate 212 is detachably mounted on the second opening. When the second cover plate 212 is in a detached state, the second screw conveyor 22 in the second shell 21 can be maintained or replaced through the second opening. In addition, the second cover plate 212 is provided with a window for observing the first screw conveyor 12 in the second shell 21. The window is defined as a second window 2122.

[0040] In one embodiment, the first shell 11 is provided with a handle portion, and the second shell 21 is provided with a window. Alternatively, the second shell 21 is provided with a handle portion, and the first shell 11 is provided with a window.

[0041] It can be seen that at least one of the first shell 11 and the second shell 21 is provided with a handle portion. At least one of the first shell 11 and the second shell 21 is provided with a window.

[0042] It should be noted that the first cover plate 112 and the first shell body 111, and the second cover plate 212 and the second shell body 211 can be detachably connected by means of a clamp or a clamp. Alternatively, the first cover plate 112 and the first shell body 111, and the second cover plate 212 and the second shell body 211 can be detachably connected by means of a screw or a bolt. The present embodiment will not be described in detail.

[0043] In an exemplary embodiment, as shown, Figure 1 and Figure 2As shown, one end of the first shell 11 is mounted with a first driving motor 123, and the other end of the first shell 11 is mounted with the second spiral conveyor 22. The recycling system 100 further comprises a second prompter (not shown) and a detector 5 for detecting the rotating speed of the second transmission shaft 221, and a signal input end of a controller (not shown) is electrically connected with a signal output end of the detector 5 and is configured to receive a failure signal sent by the second prompter when the detector 5 detects that the speed is lower than a preset speed.

[0044] It can be understood that the rotating speed of the transmission shaft is monitored by the detector 5, so as to prevent the material from being blocked due to the failure of the second transmission shaft 221 not being found in time, and the reliability of the dust removal system in operation is improved.

[0045] In one of the embodiments, as shown in Figure 2 The recycling device 3 is located below the material dropping port, and the recycling device 3 comprises a shell 31 and a material collecting box 32 arranged in the shell 31, and the material dropping port is in communication with an inner cavity of the material collecting box 32. It can be understood that the shell 31 can protect the material collecting box 32, and the material flowing out of the material dropping port is collected by the material collecting box 32.

[0046] When the material is temporarily collected, the material directly falling will be in contact with the external air, and the external air will wrap a large amount of light dust, so that a dust cloud is formed around the material collecting box, and finally diffuses into the workshop. The dust accumulation can easily bring safety hazards and affect the working environment. Therefore, as shown in Figure 2 A flexible joint 213 is mounted at the material dropping port, the shell 31 is mounted with a flexible pipe 311 in sealing connection with the flexible joint 213, an inner cavity of the flexible joint 213 is in communication with an inner cavity of the flexible pipe 311 to form a flow passage. The recycling system 100 further comprises a first control valve for controlling the opening and closing of the flow passage, the material collecting box 32 is provided with an opening in communication with the flexible pipe 311, and a circumferential wall of the shell 31 is provided with an opening for the material collecting box 32 to enter and exit.

[0047] In this way, the material enters the material collecting box 32 through the flexible pipe 311, so as to avoid the material from diffusing, when the material collecting box 32 is in a full state, the first control valve can be closed, the material collecting box 32 can be taken out through the opening, and then an empty material collecting box 32 is replaced, when the first control valve is opened, the material collecting box 32 can continue to receive the material falling through the material dropping port, the replacement process of the whole material collecting box 32 is completed conveniently, and the material can be prevented from falling outside the material collecting box 32 in the replacement process of the material collecting box 32 through the opening and closing of the first control valve.

[0048] The first control valve can be a first plug valve 7 arranged between the flexible joint 213 and the flexible pipe 311, or can be other forms of control valves, as long as the opening and closing of the flow passage can be realized, and the embodiment will not be described in detail.

[0049] Further, as shown in Figures 1-3As shown, the recycling system 100 further comprises a vibrating device 8 for vibrating the recycling device 3, and the vibrating device 8 is connected with the recycling device 3. The falling ash can be prevented from piling up in the recycling device 3, and the manual pushing of the ash can be avoided, so as to reduce the labor cost.

[0050] In one of the embodiments, as shown in the drawings, Figure 3 The vibrating device 8 comprises a vibrating motor 81 and an elastic member, the vibrating motor is located below the recycling device 3, and the eccentric block of the vibrating motor is in abutment with the recycling device 3, and the elastic member is installed below the recycling device 3 and used for making the recycling device 3 have a tendency of moving upward. In this way, the recycling device 3 can be in a vibrating state by starting the vibrating motor, so as to make the ash in the recycling box 32 move from the center to the periphery, which can effectively prevent the material from piling up in the process of collecting ash, and avoid the difficulty of pushing the material.

[0051] When the recycling device 3 is vibrating, it is easy to fall. Therefore, at least two elastic members are arranged below the recycling device 3 to keep the recycling device 3 stable. Specifically, as shown in the drawings, Figure 3 The bottom of the recycling device 3 is provided with a support 9, and the elastic member is a spring 82, and the upper and lower ends of the spring 82 are connected with the support 9 and the bottom of the recycling device 3, respectively. In addition, the top of the support 9 is provided with a support column, the spring 82 is sleeved on the periphery of the support column, and the upper and lower ends of the spring 82 are in abutment with the support 9 and the bottom of the recycling device 3, respectively. In this way, when the recycling device 3 is vibrating, the existence of at least two springs can buffer the vibration of the recycling device 3, and the recycling device 3 is more stable when vibrating, so as to avoid the situation that the recycling device 3 falls.

[0052] In the illustrative embodiment, the vibrating motor 81 is installed at the bottom of the recycling device 3 near the central region.

[0053] The recycling system 100 further comprises a first material level sensor 321 and a first prompter (not shown in the drawings), and the first material level sensor 321 is arranged on the recycling device 3, and specifically, the first material level sensor 321 is arranged on the recycling box 32.

[0054] As shown in the drawings, Figure 2 The signal output end of the first material level sensor 321 is electrically connected with the signal input end of the controller, and the controller is configured to control the first prompter to send a signal for replacing the recycling box 32 when the first material level sensor 321 detects that the material height in the recycling box 32 is higher than the preset position. In this way, the operator can be reminded to replace the recycling box 32 in time, the situation that the hose 311 is blocked due to the continued collection of materials when the recycling box 32 is full can be avoided, the situation that the material (such as ash) falls into the shell 31 can be reduced, the cleaning difficulty is reduced, and the cleanliness of the shell 31 is maintained.

[0055] This application also provides a dust removal system, such as Figures 1-3 As shown, the dust removal system 200 includes a dust collector 4 and a recycling system 100 according to any of the above embodiments. The outlet of the dust collector 4 is connected to the inlet of the recycling system 100. In this way, the recycling system 100 can transfer the material falling from the outlet of the dust collector 4 to the recycling device 3 for recycling. The entire process does not require manual conveying and handling, reducing the labor intensity of workers. The entire process does not expose any material, improving the on-site environment.

[0056] In one embodiment, the dust collector 4 may include a discharge ash hopper 41.

[0057] In another embodiment, such as Figure 1 As shown, the dust collector 4 includes at least two discharge hoppers 41, which are spaced apart along the length of the first screw conveyor 1. Each discharge hopper 41 has a corresponding inlet. Thus, the material flowing out of the outlet of each dust collector 4 can flow into the first outer casing 11 through its corresponding inlet and be conveyed towards the discharge outlet by the first screw conveyor 12. A single first screw conveyor 1 can transfer the material discharged from at least two dust collectors 4.

[0058] As an illustration, the discharge ash hopper 41 can be set to two or three, or even more than three.

[0059] The discharge ash hopper 41 is equipped with a second control valve for discharging or not discharging material. The second control valve can be a second gate valve 413 or other control valves, as long as they can control the material flow or block the material flow.

[0060] Specifically, the dust collector 4 also includes a cleaning device. As shown in the figure, the discharge hopper 41 is equipped with a second level sensor 412. The signal output terminal of the second level sensor 412 is electrically connected to the signal input terminal of the controller. The signal output terminal of the controller is electrically connected to the cleaning device and is configured to control the cleaning device to clean the discharge hopper 41 when the second level sensor 412 detects that the material level in the discharge hopper 41 is higher than a preset position, indicating blockage. Thus, when the material level in the discharge hopper 41 is higher than the preset position, the second level sensor 412 transmits a blockage signal to the controller, which then controls the cleaning device to clean the discharge hopper 41.

[0061] It should be noted that, as Figure 1As shown, the cleaning device can be a ring blowing device 6, which comprises a nozzle 61 for blowing into the discharge hopper 41. The discharge hopper 41 is blown by the nozzle 61 at regular intervals, so as to prevent the material in the discharge hopper 41 from bridging and causing the material to be blocked. In addition, the cleaning device can also be a stirring device.

[0062] It should be noted that the drivers in the above-mentioned detector 5, first material level sensor 321, second material level sensor 412, first screw conveyor 12 and second screw conveyor 22 can all be dust explosion-proof types to meet the dust explosion-proof requirements.

[0063] The technical features of the above-mentioned embodiments can be combined in any manner. In order to make the description simple, all possible combinations of the technical features in the above-mentioned embodiments are not described, but as long as the combinations of the technical features do not exist, they should be considered as the scope of the present disclosure.

[0064] The above-mentioned embodiments only express several implementation manners of the present application, and the description is more specific and detailed, but it should not be understood as a limitation on the patent scope of the present application. It should be noted that for those skilled in the art, some modifications and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the patent protection scope of the present application should be subject to the appended claims.

Claims

1. A recovery system for a dust extractor, characterized in that The utility model relates to a kind of recycling system of dust collector, including: First screw conveyor (1) is horizontally arranged or substantially horizontally arranged, the first screw conveyor (1) includes first shell (11) and first screw conveyor (12), at least part of the first screw conveyor is arranged in the first shell (11), the first shell (11) is provided with the inlet port communicated with the outlet of the dust collector (4) and the discharge port for discharging material, and the first screw conveyor is used to convey material to the discharge port; Second screw conveyor (2) is gradually inclined upward along the conveying direction of its own material, and the second screw conveyor (2) includes second shell (21) and second screw conveyor (22), at least part of the second screw conveyor (22) is arranged in the second shell (21), and the second shell (21) is provided with the inlet port communicated with the discharge port and the drop port for being communicated with the recycling device (3).

2. The recycling system of claim 1, wherein, At least one of the first shell (11) and the second shell (21) is provided with a handle part. And / or, at least one of the first shell (11) and the second shell (21) is provided with a viewing window.

3. The recycling system of claim 1, wherein, The second screw conveyor includes a second drive shaft (221), second spiral blades and a second drive motor (223) for driving the second drive shaft (221) to rotate, the second spiral blades are arranged on the outer peripheral wall of the drive shaft and located in the second shell (21), and the recycling system further includes a controller, a second prompter and a detector (5) for detecting the rotating speed of the second drive shaft (221), the signal input end of the controller is electrically connected with the signal output end of the detector (5) and is configured to control the second prompter to send a fault signal when the detector (5) detects that the speed is lower than the preset speed.

4. The recycling system of any one of claims 1-3, wherein, A recycling device (3) is arranged below the drop port, and the recycling device (3) includes a housing (31) and a material collecting box (32) arranged in the housing (31), and the drop port is communicated with the inner cavity of the material collecting box (32).

5. The recycling system of claim 4, wherein, A flexible joint (213) is installed at the drop port, a flexible pipe (311) is installed in sealing connection with the flexible joint (213), the inner cavity of the flexible joint (213) is communicated with the inner cavity of the flexible pipe (311) to form a flow passage, and the recycling system further includes a first control valve for controlling the opening and closing of the flow passage, the inner cavity of the material collecting box (32) is communicated with the flexible pipe (311), and the peripheral wall of the housing (31) is provided with an opening for the material collecting box (32) to enter and exit.

6. The recycling system of claim 4, wherein, A first material level sensor (321) and a first prompter are further included, the first material level sensor (321) is arranged in the recycling device (3), the signal output end of the first material level sensor (321) is electrically connected with the signal input end of the controller, and the controller is configured to control the first prompter to send a signal for replacing the material collecting box (32) when the first material level sensor (321) detects that the material height in the material collecting box (32) is higher than the preset position.

7. The recycling system of claim 4, wherein, The recycling system (100) according to any one of claims 1-8, wherein the dust collector (4) is connected to the inlet of the recycling system (100).

8. The recycling system of claim 7, wherein, The dust collector (4) comprises at least two discharge hoppers (41), and the at least two discharge hoppers (41) are arranged along the length direction of the first screw conveyor (1) at intervals.

9. A dust extraction system comprising a dust extractor (4), characterised in that, The dust collector (4) comprises a cleaning device and a discharge hopper (41), and the discharge hopper (41) is provided with a second material level sensor (412), the signal output end of the second material level sensor (412) is electrically connected to the signal input end of a controller, the signal output end of the controller is electrically connected to the cleaning device, and the controller is configured to control the cleaning device to clean the discharge hopper (41) when the second material level sensor (412) detects that the material in the discharge hopper (41) is higher than a preset position and is blocked. ​ 10. The dust extraction system of claim 9, wherein, ​

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