Conveying system and dust remover

Abstract

The utility model relates to a conveying system and a dust remover, and relates to the field of industrial dust removal equipment, and the conveying system comprises a hopper used for containing powder, a discharging screw located at an outlet of the hopper, a scraping plate synchronously rotating with the discharging screw, and a driving part; one end of the material scraping plate is rotationally connected with the discharging screw rod, the axis, rotating relative to the discharging screw rod, of the material scraping plate is a first shaft, and the first shaft is perpendicular to the axis, rotating relative to the discharging screw rod, of the material scraping plate; the driving piece drives the scraping plate to rotate around the first shaft in the direction away from the discharging screw. Powder is scraped layer by layer through the scraping plate to fall into the discharging screw to be output outwards, and the effect of conveying the powder with the increased looseness is achieved.

Description

Technical Field

[0001] The present application relates to the field of industrial dust removal equipment, and in particular to a conveying system and a dust collector. Background Art

[0002] Currently, dust collector is a device used to remove dust, particulate matter and pollutants generated in industrial production processes.

[0003] Since the calcium carbonate powder in the dust collector's dust sprayer will agglomerate, the dust sprayer will be blocked when in use, affecting the powder spraying effect and continuous operation. Utility Model Content

[0004] The present application provides a conveying system, which has the effect of continuously conveying powder with high looseness to a powder sprayer.

[0005] The present application provides a conveying system, including a hopper for containing powder, a discharge screw located at the outlet of the hopper, a scraper plate that rotates synchronously with the discharge screw, and a driving member; one end of the scraper plate is rotatably connected to the discharge screw, and the axis of rotation of the scraper plate relative to the discharge screw is a first axis, and the first axis is perpendicular to the axis of rotation of the discharge screw; the driving member drives the scraper plate to rotate around the first axis in a direction away from the discharge screw.

[0006] In the above technical solution, the scraper plate scrapes the powder to fall near the discharge screw, and the discharge screw can maintain a uniform conveying speed when discharging the powder from the outlet of the hopper.

[0007] The scraper plate scrapes the falling materials to make them looser, which helps to continuously and stably transport the materials to subsequent devices for use.

[0008] The present application also provides a dust collector, comprising the above-mentioned conveying system.

[0009] In the above technical solution, the powder dropped from the hopper has a high looseness, is not easy to be blocked during powder transportation and powder spraying, and the loose powder can be fully mixed with the material to be processed, so as to meet the continuous and stable long-term use of the dust collector. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 is a schematic diagram of the structure of a conveying system in an embodiment;

[0011] Figure 2 The present invention is a schematic diagram of the structure of a feeding screw, a first conveying screw and a second conveying screw in an embodiment;

[0012] Figure 3 The present invention is a schematic diagram of the structure of a feeding screw, a scraper plate and a driving member in an embodiment.

[0013] 1. Hopper; 2. Feeding screw; 21. Spiral blade; 3. Scraper plate; 4. Driving member; 41. Elastic member; 42. Fixing member; 43. Sliding member; 5. Conveying trough; 51. Feeding port; 52. Discharging port; 6. First conveying screw; 7. Second conveying screw; 8. Feeding pipe. DETAILED DESCRIPTION

[0014] The present application is further described in detail below through the accompanying drawings and embodiments. Through these descriptions, the characteristics and advantages of the present application will become clearer and more specific.

[0015] The word "exemplary" is used exclusively herein to mean "serving as an example, embodiment, or illustration." Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments. Although various aspects of the embodiments are shown in the drawings, the drawings are not necessarily drawn to scale unless otherwise noted.

[0016] In addition, the technical features involved in different embodiments of the present application described below can be combined with each other as long as they do not conflict with each other.

[0017] The embodiment of the present application discloses a conveying system for conveying materials, especially for conveying powdered materials. In the present embodiment, the powder conveyed by the conveying system is calcium carbonate powder, and the conveying system conveys the powder to a powder sprayer.

[0018] The higher the looseness of the powder delivered to the powder sprayer, the more uniform the powder sprayed by the powder sprayer; the more uniform the amount of powder delivered to the powder sprayer, the more uniform the powder sprayed by the powder sprayer, reducing the time when the powder sprayer cannot spray powder, so that the powder sprayer can spray powder continuously; when the powder delivered to the powder sprayer is agglomerated, it may clog the powder sprayer.

[0019] Reference Figure 1 and Figure 2 The conveying system in this embodiment includes a hopper 1 for containing powder, a feeding screw 2 located at the outlet of the hopper 1, a scraper plate 3 rotating synchronously with the feeding screw 2, and a driving member 4.

[0020] One end of the scraper plate 3 is rotatably connected to the blanking screw 2 , and the axis of rotation of the scraper plate 3 relative to the blanking screw 2 is a first axis, and the first axis is perpendicular to the axis of rotation of the blanking screw 2 .

[0021] The driving member 4 drives the scraper plate 3 to rotate around the first axis in a direction away from the unloading screw rod 2 .

[0022] Reference Figure 1 The hopper 1 is used to hold calcium carbonate powder, and the calcium carbonate powder falls from the hopper 1 and enters the subsequent device of the conveying system for conveying until the powder is conveyed to the powder sprayer. The subsequent device of the conveying system includes a conveying trough 5 described in the subsequent content.

[0023] Specifically, the hopper 1 is a conical shell with openings at both ends, the upper end opening of the hopper 1 is an inlet, the lower end opening is an outlet, and the inlet diameter of the hopper 1 is larger than the outlet diameter. The hopper 1 is placed vertically, and the powder in the hopper 1 tends to move toward the outlet and move out of the hopper 1 from the outlet.

[0024] Reference Figure 2 The lower end of the feeding screw 2 is provided with a spiral blade 21 on the side, the upper end of the feeding screw 2 is a bare rod, and the upper end of the feeding screw 2 is fixedly connected to the output shaft of the motor through a coupling. The feeding screw 2 is coaxially arranged with the hopper 1, and the lower end of the feeding screw 2 extends out of the outlet of the hopper 1, that is, a part of the spiral blade 21 of the feeding screw 2 is located in the hopper 1, and the other part is located outside the hopper 1.

[0025] For ease of description, a main axis is defined as the center line of the blanking screw 2 and also the rotation axis of the blanking screw 2 .

[0026] In another embodiment, the lower end of the feeding screw 2 is located in the hopper 1 , and the lowermost end is located at or close to the outlet of the hopper 1 , and the spiral blade 21 of the feeding screw 2 is located in the hopper 1 .

[0027] When the motor is started, the unloading screw 2 is driven to rotate. When the unloading screw 2 rotates, the powder in the hopper 1 is continuously discharged from the outlet of the hopper 1 at a stable speed through the spiral blade 21.

[0028] Reference Figure 3 One end of the scraper plate 3 is rotatably connected to the blanking screw 2, and the axis of rotation of the scraper plate 3 relative to the blanking screw 2 is the first axis, and the first axis is perpendicular to the axis of rotation of the blanking screw 2.

[0029] The driving member 4 drives the scraper plate 3 to rotate around the rotation axis in a direction away from the unloading screw 2 .

[0030] Specifically, the scraper plate 3 is in the hopper 1 , one end of the scraper plate 3 is connected to the feeding screw 2 , and the connection position between the lower end of the scraper plate 3 and the feeding screw 2 is located above the spiral blade 21 of the feeding screw 2 .

[0031] When the unloading screw 2 rotates, the scraper plate 3 rotates synchronously with the unloading screw 2 around the main axis; when the scraper plate 3 rotates around the main axis, the scraper plate 3 will scrape the powder in the hopper 1 to move. When there are agglomerated lumps in the powder, the scraper plate 3 will scrape the lumps to break up or scrape them apart, thereby increasing the looseness of the powder.

[0032] The powder scraped by the scraper plate 3 will fall onto or near the spiral blade 21 of the feeding screw 2, and the spiral blade 21 of the feeding screw 2 will rotate to transport the powder to and out of the outlet of the hopper 1 at a steady speed.

[0033] The driving member 4 drives the scraper plate 3 to rotate. The structure of the driving member 4 can use the structure described in the subsequent content of this embodiment, or other structural forms can be used. It is only necessary to make the force applied by the driving member 4 to the scraper plate 3 enable the driving member 4 to rotate around the first axis away from the unloading screw 2, thereby increasing the angle between the scraper plate 3 and the main shaft, and it is necessary to ensure that the increase in the angle between the scraper plate 3 and the main shaft is synchronized with the gradual reduction of powder in the hopper 1.

[0034] In the initial stage of material discharge, the scraper plate 3 and the material discharge screw 2 are parallel to each other or the angle between them is relatively small. The material discharge screw 2 and the scraper plate 3 only drive a small amount of powder to move, and the resistance encountered by the material discharge screw 2 and the scraper plate 3 when rotating synchronously is relatively small.

[0035] In the middle stage of feeding, when the powder in the hopper 1 close to the feeding screw 2 is discharged from the outlet of the hopper 1, the driving member 4 drives the scraper plate 3 to rotate around the first axis in the direction away from the feeding screw 2, so that the surface of the scraper plate 3 facing away from the feeding screw 2 is in contact with and pressed against the powder. Due to the obstruction of the powder, the scraper plate 3 is only partially embedded in the powder.

[0036] As the spiral blades 21 of the feeding screw 2 drop the powder, the powder in the hopper 1 decreases, and the driving member 4 drives the scraper plate 3 to rotate. The angle between the scraper plate 3 and the feeding screw 2 increases, and the scraper plate 3 maintains contact with the powder. When the scraper plate 3 rotates with the feeding screw 2, it keeps scraping the powder to fall to the spiral blades 21 outside the feeding screw 2, and the looseness of the material scraped by the scraper plate 3 and falling into the spiral blades 21 of the feeding screw 2 is relatively high.

[0037] At the end of material discharge, the driving member 4 pushes the scraper plate 3 to rotate to the maximum angle, at which time the scraper plate 3 can contact the side wall of the hopper 1 to reduce the residual powder in the hopper 1.

[0038] Since the powder falling into the spiral blades 21 of the feeding screw 2 is relatively loose, the material output from the outlet of the hopper 1 is relatively loose, and the material is less likely to agglomerate or clog the conveying channel during the subsequent conveying process, which helps to continuously and stably convey the material. After the material is conveyed to the powder sprayer, it is not easy to clog the powder sprayer.

[0039] Reference Figure 1 Further, a feeding pipe 8 is fixed on the hopper 1, one end of the feeding pipe 8 is connected to the outlet of the hopper 1, and the other end is connected to the feed port 51 of the subsequent device of the conveying system. One end of the blade provided on the feeding screw 2 passes through the outlet of the hopper 1 and extends into the feeding pipe 8.

[0040] Reference Figure 2 As an optional solution, the portion where the scraper plate 3 is rotatably connected to the unloading screw 2 is the end of the scraper plate 3 close to the outlet of the hopper 1 .

[0041] Specifically, the lower end of the scraper plate 3 is connected to the blanking screw 2 , and the lower end of the scraper plate 3 is connected above the blanking screw 2 where the spiral blade 21 is provided.

[0042] When the powder scraped by the scraper plate 3 falls along the scraper plate 3, it can directly fall onto the spiral blade 21 of the feeding screw 2. The hopper 1 is conical, and the lower end of the scraper plate 3 is rotatably connected to the feeding screw 2, so that the angle between the scraper plate 3 and the main shaft can be relatively large, which is conducive to the scraper plate 3 scraping most or all of the powder in the hopper 1.

[0043] In another embodiment, the end of the scraper plate 3 rotatably connected to the unloading screw 2 is the end of the scraper plate 3 away from the outlet of the hopper 1 .

[0044] In another embodiment, the portion of the scraper plate 3 that is rotatably connected to the unloading screw 2 is the middle portion of the scraper plate 3 .

[0045] Reference Figure 3 As an optional solution, the driving member 4 includes an elastic member 41, one end of the elastic member 41 is connected to the unloading screw 2, and the other end is connected to the scraper plate 3, which is used to apply a force to the scraper plate 3 to rotate around the first axis in a direction away from the unloading screw 2.

[0046] Specifically, in this embodiment, the elastic member 41 is a compression spring, one end of the compression spring is pressed against the side of the unloading screw 2, and the other end is pressed against the surface of the scraper plate 3. Since the compression spring is sleeved outside the fixing member 42 and the sliding member 43 in this embodiment, the two ends of the compression spring can maintain a one-to-one corresponding pressure against the unloading screw 2 and the scraper plate 3. In another embodiment, one end of the compression spring is fixedly connected to the unloading screw 2, and the other end is fixedly connected to the scraper plate 3.

[0047] During the material unloading process, the compression spring is always in a compressed state; at the initial stage of material unloading, the compression amount of the compression spring is the largest; in the middle of material unloading, the compression amount of the compression spring gradually decreases, and the compression spring pushes the scraper plate 3 to rotate around the first axis, increasing the angle between the scraper plate 3 and the main axis.

[0048] In another embodiment, a shaft is fixed on the feeding screw 2, and the axis of the shaft is parallel to or coincides with the first axis. The elastic member 41 includes a torsion spring, which is sleeved on the outside of the shaft, and one arm of the torsion spring presses against the feeding screw 2, and the other arm presses against the scraper plate 3.

[0049] In another embodiment, the elastic member 41 includes a V-shaped spring piece, one end of which is fixedly connected to the unloading screw 2 , and the other end of which is pressed against the surface of the scraper plate 3 facing the unloading screw 2 .

[0050] In another embodiment, the elastic member 41 includes a counterweight block, which is fixed on the scraper plate 3 . Further, the counterweight block is fixed to an end of the scraper plate 3 away from the end where the scraper plate 3 is connected to the unloading screw 2 .

[0051] When the unloading screw 2 rotates to drive the scraper plate 3 to rotate around the main axis, the scraper plate 3 and the counterweight block generate centrifugal force due to rotation to push the scraper plate 3 to rotate around the main axis in a direction away from the unloading screw 2 .

[0052] Reference Figure 3 As an optional solution, the driving member 4 also includes a fixing member 42 and a sliding member 43 .

[0053] One end of the fixing member 42 is hinged to the unloading screw rod 2. The sliding member 43 is slidably assembled on the fixing member 42, and one end of the sliding member 43 away from the fixing member 42 is hinged to the scraper plate 3.

[0054] Specifically, the hinge axis between the fixing member 42 and the unloading screw 2 is the first hinge axis, the hinge axis between the sliding member 43 and the scraper plate 3 is the second hinge axis, and the first hinge axis is parallel to the second hinge axis and parallel to the first axis.

[0055] Exemplarily, the fixing member 42 comprises a pipe, one end of which is hinged to the scraper plate 3. The sliding member 43 comprises a rod with one end extending into the pipe, the rod slides relative to the pipe, and the other end of the rod is hinged to the unloading screw 2.

[0056] In another embodiment, the fixing member 42 comprises a slide rail, one end of which is hinged to the scraper plate 3. The sliding member 43 comprises a strip slider mounted on the slide rail, the strip slider slides relative to the slide rail, and one end of the strip slider away from the slide rail is hinged to the unloading screw 2.

[0057] When the scraper plate 3 rotates around the rotation axis in a direction away from the unloading screw 2, the scraper drives the sliding member 43 to slide on the fixing member 42. The fixing member 42 and the sliding member 43 can support the end of the scraper plate 3 away from the rotation axis, thereby improving the stability of the scraper plate 3 structure itself.

[0058] Reference Figure 1 As an optional solution, the elastic member 41 includes a compression spring, which is sleeved on the outside of the fixing member 42 and the sliding member 43, one end of the compression spring presses against the unloading screw 2, and the other end presses against the scraper plate 3.

[0059] The fixing member 42 and the sliding member 43 can reduce the deformation of the compression spring along its own radial direction and improve the stability of the compression spring structure itself.

[0060] The connection between the two ends of the compression spring and the unloading screw rod 2 and the scraper plate 3 is simple.

[0061] The compression spring can continuously exert force on the scraper plate 3 to keep the scraper plate 3 in close contact with the material.

[0062] Reference Figure 1 and Figure 2 As an optional solution, the conveying system also includes a conveying trough 5, a first conveying screw 6 and a second conveying screw 7; the conveying trough 5 is provided with a feed port 51 and a discharge port 52, and the feed port 51 corresponds to the outlet of the hopper 1.

[0063] The first conveying screw 6 and the second conveying screw 7 are arranged in the conveying trough 5 and are spaced apart from each other. The first conveying screw 6 and the second conveying screw 7 rotate around their own axes to convey the material entering from the feed port 51 to the discharge port 52 .

[0064] Specifically, the conveying trough 5 is a long strip trough structure, a feed port 51 is arranged on the upper side of one end of the conveying trough 5, and a discharge port 52 is arranged on the lower side of the other end.

[0065] One end of the feed pipe 8 away from the hopper 1 is communicated with the feed inlet 51 of the conveying trough 5. The feed pipe 8 can prevent the powder from diffusing outwards when entering the conveying trough 5 from the hopper 1.

[0066] The first conveying screw 6 and the second conveying screw 7 are both screw shafts with a screw portion disposed on the outer side. The axial directions of the first conveying screw 6 and the second conveying screw 7 are parallel to each other and are disposed along the length direction of the conveying trough 5 .

[0067] The conveying system also includes a motor, which drives the first conveying screw 6 and the second conveying screw 7 to rotate around their own axes. When the first conveying screw 6 and the second conveying screw 7 rotate, they can drive the powder entering the conveying trough 5 from the feed port 51 to move to the discharge port 52, and the powder falls from the discharge port 52 to the outside of the conveying trough 5.

[0068] The twin-screw conveying system has better conveying and stirring capabilities, which can effectively reduce the blockage of powder during the conveying process and reduce the risk of powder blockage in the powder sprayer.

[0069] Reference Figure 2 As an optional solution, the pitch of the first conveying screw 6 and / or the second conveying screw 7 increases along the conveying direction.

[0070] Specifically, the pitch of the first conveying screw 6 increases along the conveying direction, and the pitch of the second conveying screw 7 increases along the conveying direction. The conveying direction is the direction in which the material is driven to move from the feed port 51 to the discharge port 52, which can also be understood as the axis of the first conveying screw 6 or the second conveying screw 7 and the direction in which the material moves.

[0071] In another embodiment, the pitch of the first conveying screw 6 increases along the conveying direction, and the pitch of the second conveying screw 7 remains unchanged.

[0072] In another embodiment, the pitch of the second conveying screw 7 increases along the conveying direction, and the pitch of the first conveying screw 6 remains unchanged.

[0073] As the powder moves along the conveying direction in the conveying trough 5, the gap between the first conveying screw 6 and the second conveying screw 7 gradually increases, and the powder has more space to move freely. The increasing pitch can increase the dispersion effect of the material during the conveying process, increase the looseness of the powder, and reduce the risk of blockage.

[0074] Reference Figure 2 As an optional solution, the outlet of the hopper 1 is directly opposite to the area between the first conveying screw 6 and the second conveying screw 7.

[0075] Specifically, the powder enters the area between the first conveying screw 6 and the second conveying screw 7. During the powder conveying process, the first conveying screw 6 and the second conveying screw 7 can both exert force on the powder, which helps to maintain the looseness of the powder.

[0076] In another embodiment, the conveying system includes a conveying trough 5 and a single feeding screw. The single feeding screw can also be used to convey the powder material that falls from the hopper 1 into the conveying trough 5 .

[0077] In this embodiment, only one scraper plate 3 is provided.

[0078] In another embodiment, a plurality of scraper plates 3 are provided, and the plurality of scraper plates 3 are spaced apart along the circumference of the feeding screw 2 .

[0079] Specifically, the number of scraper plates 3 can be determined according to design requirements, and multiple scraper plates 3 are evenly distributed in the axial direction of the unloading screw 2. Exemplarily, two scraper plates 3 are provided, and the two scraper plates 3 are symmetrically arranged on the outside of the unloading screw 2; optionally, three scraper plates 3 are provided, and the three scraper plates 3 are circumferentially spaced on the outside of the unloading screw 2, and the angle between any two adjacent scraper plates 3 along the circumference of the unloading screw 2 is 120°.

[0080] The driving member 4 is arranged in one-to-one correspondence with the scraper plate 3, and the driving member 4 drives the corresponding scraper plate 3 to rotate around the rotation axis. Exemplarily, three compression springs are arranged, and the three compression springs correspond to the three scraper plates 3 one-to-one, respectively.

[0081] The more scraper plates 3 are provided, the better the stirring effect of the scraper plates 3 on the powder in the hopper 1 is when the feeding screw 2 rotates one circle, and the more powder can be moved by the scraper plates 3, which is conducive to the smooth transportation of the powder.

[0082] This embodiment also discloses a dust collector, including an air suction device, a powder sprayer, a mixing device and the above-mentioned conveying system.

[0083] The conveying system conveys the dust-removed powder to the powder sprayer, the powder sprayer sprays the dust-removed powder to the mixing device, the suction device delivers the sucked material to be processed into the mixing device, and the mixing device mixes the dust-removed powder with the material to be processed.

[0084] In this embodiment, the material to be processed includes dust, particulate matter and pollutants, including but not limited to aluminum powder. The dust removal powder is determined according to the environment in which the dust removal machine is used. In this embodiment, the dust removal powder is calcium carbonate powder.

[0085] In some production and processing environments, such as metal processing, welding, grinding, etc., sparks, sparks or high-temperature particles may be generated, and the materials to be processed in the air may cause a risk of fire or explosion. The use of dust collectors mixes calcium carbonate powder and aluminum powder, so that dust collectors can take timely measures to prevent the spread of fire when a fire may occur.

[0086] Calcium carbonate powder is easy to agglomerate. The agglomerated calcium carbonate powder in the existing hopper will directly fall into the feed trough. When the conveying system conveys the agglomerated powder to the powder sprayer, the powder sprayer is easy to be blocked or blocked, which affects the powder spraying effect and the continuous operation of the dust collector.

[0087] In this embodiment, the powder dropped from the hopper 1 is the powder scraped by the scraper plate 3 and conveyed by the feeding screw 2. The powder has a high looseness and is not easy to be blocked during the powder conveying and powder spraying process. The loose powder can be fully mixed with the aluminum powder in the mixing device, which meets the requirements of continuous and stable long-term use of the dust collector.

[0088] The "parallel" and "perpendicular" mentioned in this application can not only be completely parallel or perpendicular, but also can have a certain error; for example, if the angle between the two is greater than or equal to 0° and less than or equal to 5°, the two are considered to be parallel to each other; if the angle between the two is greater than or equal to 85° and less than or equal to 95°, the two are considered to be perpendicular to each other.

[0089] In the description of the present application, it should be noted that the terms "upper", "lower", "inside", "outside", "front", "back", "left", "right", etc. indicate directions or positional relationships based on the directions or positional relationships in the working state of the present application. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on the present application.

[0090] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "install", "connect" and "connect" should be understood in a broad sense. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0091] The present application has been described above in conjunction with preferred embodiments, but these embodiments are only exemplary and serve only as an illustration. On this basis, various replacements and improvements may be made to the present application, all of which fall within the scope of protection of the present application.

Claims

1. A conveying system, characterized in that: It includes a hopper for containing powder, a feeding screw at the outlet of the hopper, a scraper plate rotating synchronously with the feeding screw, and a driving member; One end of the scraper plate is rotatably connected to the blanking screw, and the axis of rotation of the scraper plate relative to the blanking screw is a first axis, and the first axis is perpendicular to the axis of rotation of the blanking screw; The driving member drives the scraper plate to rotate around the first axis in a direction away from the unloading screw.

2. The conveying system according to claim 1, characterized in that The portion of the scraper plate that is rotatably connected to the unloading screw is the end of the scraper plate close to the outlet of the hopper.

3. The conveying system according to claim 2, characterized in that: The driving member includes an elastic member, one end of which is connected to the unloading screw, and the other end of which is connected to the scraper plate, for applying a force to the scraper plate to rotate around the first axis in a direction away from the unloading screw.

4. The conveying system according to claim 3, characterized in that: The driving member also includes a fixing member and a sliding member; wherein, One end of the fixing piece is hinged to the blanking screw; The sliding member is slidably assembled on the fixing member, and one end of the sliding member away from the fixing member is hinged to the scraper plate.

5. The conveying system according to claim 4, characterized in that: The elastic member comprises a compression spring, which is sleeved on the outside of the fixing member and the sliding member. One end of the compression spring is pressed against the unloading screw rod, and the other end is pressed against the scraper plate.

6. The conveying system according to any one of claims 1 to 5, characterized in that: It also includes a conveying trough, a first conveying screw and a second conveying screw; wherein, The conveying trough is provided with a feed inlet and a discharge inlet, and the feed inlet corresponds to the outlet of the hopper; The first conveying screw and the second conveying screw are in the conveying trough, and the first conveying screw and the second conveying screw respectively rotate around their own axes to convey the material entering from the feed port to the discharge port.

7. The conveying system according to claim 6, characterized in that The pitch of the first conveying screw and / or the second conveying screw increases along the conveying direction.

8. The conveying system according to claim 6, characterized in that The outlet of the hopper is directly opposite to the area between the first conveying screw and the second conveying screw.

9. The conveying system according to claim 6, characterized in that The scraper plates are provided in plurality, and the plurality of scraper plates are arranged at intervals along the circumference of the unloading screw; The driving member is arranged in one-to-one correspondence with the scraper plate.

10. A dust collector, characterized in that: A delivery system comprising the delivery system of any one of claims 1 to 8.

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