Material distributing device and rotary screen

Abstract

The invention belongs to the technical field of rotary screens. The material distributing device comprises a feeding section, and a feeding channel is arranged in the feeding section; the material uniformizing section is located at the downstream of the feeding section and used for receiving and uniformizing the materials conveyed by the feeding channel; the material distributing section is located on the downstream portion of the material uniformizing section, the material distributing section is used for receiving and conveying the materials conveyed by the material uniformizing section to different screening ships which are arranged up and down, and a material channel control mechanism is arranged in the material distributing section and used for controlling the materials to enter the different screening ships. The material uniformizing mechanism is used for solving the technical problem that a material uniformizing mechanism of an existing rotary screen cannot distribute materials. The invention further discloses a rotary screen which comprises the material distributing device. The rotary screen is used for solving the problem that an existing rotary screen cannot meet the requirements of parameter switching and screening switching between different materials at the same time.

Description

Technical Field

[0001] The present invention belongs to the technical field of rotary screens, and in particular relates to a material dividing device and a rotary screen comprising the material dividing device. Background Art

[0002] With the continuous improvement of people's living standards, people's demand for aquatic products, livestock and poultry and other meats has increased year by year, prompting the breeding enterprises to increase their demand for feed. The increase in the production capacity of feed factories means that the screening equipment needs to have a larger screening area. At present, most grading equipment is a single-group structure, and the equipment can only screen a single material. If two or more materials need to be screened, it can only be achieved by replacing the screen surface. The use of traditional single-layer structure screens requires larger site support. The daily application (such as replacing the screen surface) and maintenance of the screening equipment will become more difficult as the size of the equipment increases. Therefore, customers are eager to improve the convenience of operation and reduce labor intensity in daily applications. Summary of the invention

[0003] The first object of the present invention is to provide a material dividing device to solve the technical problem that the material equalizing mechanism of the existing rotary screen cannot divide the material.

[0004] In order to solve the above technical problems, the present invention adopts the following technical scheme, the material distribution device comprises: A feeding section, wherein a feeding channel is arranged in the feeding section; A material distribution section, located downstream of the feed section, and used for receiving and evenly distributing the material conveyed by the feed channel; The material dividing section is located downstream of the material equalizing section. The material dividing section is used to receive and convey the material conveyed by the material equalizing section to different screening ships arranged above and below. A material channel control mechanism is arranged in the material dividing section to control the material to enter different screening ships, that is, the material can be switched among three conveying states. The first conveying state is to convey the material to the upper screening ship; the second conveying state is to convey the material to the lower screening ship; and the third conveying state is to convey the material to the upper screening ship and the lower screening ship at the same time.

[0005] The material distribution device of the present invention can evenly deliver materials into the multi-layer screening ship, wherein the material distribution device is also provided with a material channel control device, through which the material can be controlled to enter a specific layer of the multi-layer screening ship.

[0006] In order to solve the technical problem of how to realize the material balancing section, the present invention adopts the following technical solution, and the material balancing section includes: Material equalization box; A material distribution component is arranged in the material distribution box, and the material distribution component includes: A first material balancing member, wherein the discharge end of the first material balancing member is tilted downward relative to the feed end thereof; the first material balancing member comprises a first material balancing plate; A second material balancing member is located downstream of the first material balancing member; the second material balancing member is arranged opposite to and overlaps the first material balancing member; the discharge end of the second material balancing member is arranged to be tilted downward relative to the feed end thereof; the second material balancing member comprises: Equalizing plate 2; The material balancing plates are arranged on the second material balancing plate. The material balancing plates are radially distributed with the middle of the feed end of the second material balancing plate as the center. Material balancing channels are formed between the material balancing plates. The material balancing channels gradually become larger along the material conveying direction.

[0007] The right side of the material balancing plate of the present invention is within the range of the first material balancing member extending to the right. The arrangement of the material balancing plates can make the material evenly spread in the arrangement direction of the material balancing plates, and then when the material is transported to the screen body, it can be spread more evenly in the width direction of the screen body. Among them, the tower structure can ensure that the amount of material entering each material balancing channel is the same as much as possible, and the left end of the material balancing channel becomes larger, which further disperses the material and enhances the material balancing effect.

[0008] In order to solve the technical problem of how to realize the material balancing section, the present invention adopts the following technical solution, and the material balancing section includes: Material equalization box; A material distribution component is arranged in the material distribution box, and the material distribution component includes: The first material balancing assembly comprises a third material balancing plate and a fourth material balancing plate, wherein the fourth material balancing plate is located downstream of the third material balancing plate; the third material balancing plate and the fourth material balancing plate are arranged opposite to each other and overlap each other, and are arranged to tilt downward; The second material equalizing assembly is located downstream of the first material equalizing assembly. The second material equalizing assembly includes a plurality of material equalizing plates five that are spaced apart from each other. The middle material equalizing plate five is vertically arranged, and the upper portions of the material equalizing plates five on both sides are inclined and close to the middle material equalizing plate. A material equalizing channel is formed between the material equalizing plates five, and the material equalizing channel gradually becomes larger along the feeding direction.

[0009] The material balancing plate 3 and the material balancing plate 4 are installed tilted downward to ensure the material balancing effect and take into account the material discharge speed. The material balancing plates 5 of the present invention are all within the extension range of the first material balancing component. The arrangement of the above-mentioned material balancing plates 5 can make the material evenly spread in the arrangement direction of the material balancing plates 5, and then when the material is transported to the upper screening ship or the lower screening ship, it can be spread more evenly in the width direction of the screening ship. Among them, the tower-like structure can ensure that the amount of material entering each material balancing channel 2 is the same as much as possible, and the lower end of the material balancing channel 2 becomes larger, which further spreads the material evenly and enhances the material balancing effect.

[0010] In order to solve the technical problem of how to realize the material distribution section and the material channel control mechanism, the present invention adopts the following technical solution, the material distribution section includes a material distribution box, and the material distribution box and the material distribution box form a "convex" shape structure; The material channel control mechanism is arranged in the material distribution box, and the material channel control mechanism comprises: Separator plate; A rotating material guide component is spaced apart from the material dividing plate; a material dividing opening is formed between the rotating material guide component and the material dividing plate, and the material dividing opening includes a first material dividing opening and a second material dividing opening spaced apart from each other. The rotating material guide component includes: Guide plate one; A second material guide plate is arranged on the rotating assembly, the second material guide plate is located above the first material guide plate, and the rotating assembly is in contact with the first material guide plate; Under the action of the rotating component, the second material guide plate rotates and fits with the material dividing plate on the corresponding second material dividing port, closing the second material dividing port, and the material enters the lower screening ship through the first material dividing port; the second material guide plate rotates in the opposite direction and fits with the material dividing plate on the corresponding first material dividing port, closing the first material dividing port, and the material enters the upper screening ship through the second material dividing port.

[0011] The material dividing device of the present invention is divided into a plurality of first material dividing openings and a second material dividing opening by a plurality of rotating material guiding components and a plurality of material dividing plates, wherein the rotating material guiding component can rotate left and right. Under the action of the rotating component, the second material guiding plate rotates and fits with the material dividing plate on the corresponding second material dividing opening, closing the second material dividing opening, and the material enters the lower screening ship through the first material dividing opening; the second material guiding plate rotates in the opposite direction and fits with the material dividing plate on the corresponding first material dividing opening, closing the first material dividing opening, and the material enters the upper screening ship through the second material dividing opening.

[0012] In order to solve the technical problem of how to realize the rotating assembly, the present invention adopts the following technical solution, and the rotating assembly includes: An active rotating shaft is rotatably arranged on the material distribution box; a corresponding material guide plate 2 is arranged on the active rotating shaft; A driven rotating shaft is rotatably arranged on the material distribution box; the driven rotating shaft is connected to the driving rotating shaft via a connecting rod assembly; a corresponding material guide plate 2 is arranged on the driven rotating shaft; The connecting rod assembly includes a first connecting rod and a second connecting rod, wherein a plurality of second connecting rods are arranged on the first connecting rod along its length direction at intervals, one end of the second connecting rod is rotatably connected to the first connecting rod, and the other end of the second connecting rod is connected to the corresponding driven rotating shaft or the active rotating shaft; A power element is arranged on the material distribution box, and the power element is drivingly connected to the active rotating shaft; The power element moves, driving the active rotating shaft to rotate, and the active rotating shaft drives the second material guide plate thereon to rotate. Driven by the connecting rod assembly, the driven rotating shaft rotates synchronously, so that the second material guide plate can be in different positions, thereby controlling the materials to enter different screening ships.

[0013] In order to solve the technical problem of rotation between the active (slave) rotating shaft and the second connecting rod, the present invention adopts the following technical solution, wherein an anti-rotation component is provided on one end of the active rotating shaft or the driven rotating shaft and the corresponding second connecting rod, including: A polygonal boss provided on the shaft head of the driving rotating shaft or the driven rotating shaft; The polygonal connecting hole is arranged at the connecting end of the second connecting rod, and the polygonal connecting hole cooperates with the polygonal boss to effectively prevent the driving (slave) driven rotating shaft and the second connecting rod from rotating.

[0014] In order to solve the technical problem of rotation between the first connecting rod and the second connecting rod, the present invention adopts the following technical solution, wherein a rotating assembly is arranged between the second connecting rod and the first connecting rod, comprising: A round hole is provided at the other end of the second connecting rod; The first connecting rod is provided with circular holes at intervals. The pin shaft is arranged in the circular hole of the second connecting rod and the corresponding circular hole of the first connecting rod and is locked by a cotter pin to ensure smooth rotation.

[0015] The second object of the present invention is to provide a rotary screen to solve the technical problem that the existing screening equipment cannot simultaneously meet the parameter switching and screening switching requirements between different materials.

[0016] In order to solve the above technical problems, the present invention adopts the following technical solutions, and the rotary screen includes: frame; A screen body, the screen body comprising a plurality of layers of screen boats arranged from top to bottom; The material distribution device described in any of the above items is arranged at the feed end of the screen body and is used to evenly transport the materials to the screen ships at different layers; A discharge collection device is arranged at the discharge end of the screen body and is used for collecting and recovering the finished products and impurities after screening by the screening ship; A transmission device is driven and connected to the screen body, and the transmission device is used to drive the screen body to perform a rotational motion.

[0017] The rotary screen of the present invention comprises an upper screening ship and a lower screening ship, and the upper screening ship and the lower screening ship respectively have a material discharging and collecting device; the rotary grading screen of the present invention comprises a material dividing device, and the cooperation of the material balancing mechanism and the material dividing mechanism can make the material evenly spread in the arrangement direction of the material balancing plate, and then spread more evenly in the width direction of the screening ship, and at the same time can also control the material to enter different screening ships, so that the same equipment can be used for screening different materials, and one machine can be used for multiple purposes, while meeting the parameter switching and screening switching requirements between different materials.

[0018] In order to solve the technical problem of the screening ship, the present invention adopts the following technical solution: a screen is arranged on the screening ship, and a first screening area is formed above the screen; the discharge end of the screen is arranged to be inclined downward relative to the feed end of the screen; The screen mesh apertures of upper and lower adjacent screen ships are the same or different.

[0019] The present invention sets the screen mesh at an angle, so that the screen body can deliver the screened finished materials and impurities into the corresponding material channels of the discharging and collecting device. When the screen body rotates, the screened finished materials and impurities are transported to the corresponding material channels under the action of gravity, thereby improving the efficiency of the whole machine.

[0020] In order to solve the technical problem of material sticking to the screen, the present invention adopts the following technical solution: a screen cleaning assembly is provided on the screen ship to clean the material stuck on the screen during the screening process; the screen cleaning assembly comprises: A bracket is used to support the screen; a second screening area is formed below the bracket; An elastic cleaning ball is arranged in the bracket, and the elastic cleaning ball is located below the screen.

[0021] The cleaning ball bracket supports the screen and the cleaning ball; the cleaning ball is used to clean the material stuck on the screen during the screening process to prevent the screen from becoming sticky and ensure the screening performance of the equipment. In order to solve the technical problem that the elastic cleaning balls are unevenly distributed on the bracket, resulting in uneven cleaning of the screen, the present invention adopts the following technical solution: a partition frame is provided on the bracket to evenly distribute the elastic cleaning balls in the bracket. The elastic cleaning balls 3122 of the present invention are evenly distributed in several partition frames of the cleaning ball bracket 3121 to ensure uniform cleaning of the screen.

[0022] In order to solve the technical problem of safe operation of the screen body, the present invention adopts the following technical solution: the rotary screen includes a dynamic monitoring device for detecting the movement of the screen body, and when the screen body operates abnormally, the transmission device is controlled to stop; The dynamic monitoring device comprises: A touch ring is arranged on the screen body, and the touch ring rotates along with the screen body; The travel switch assembly is arranged on the frame. When the travel switch assembly touches the touch ring, it indicates that the screen body is operating abnormally.

[0023] The dynamic monitoring device of the present invention is used to detect the movement of the screen body. When the operation is abnormal, the transmission device can be controlled to stop, thereby improving the safety performance of the whole machine.

[0024] In order to solve the technical problem of how to realize the travel switch assembly, the present invention adopts the following technical solution, and the travel switch assembly includes: A mounting bracket, arranged on the frame; A travel switch is arranged on the mounting bracket; A spring probe is arranged on the travel switch. When the spring probe touches the touch ring, it indicates that the screen body operates abnormally.

[0025] When the screen body operates abnormally, the touch ring will touch the spring probe, and the travel switch will be activated, so that the power supply of the drive part is disconnected and the combined rotary screen is stopped. This device greatly improves the safety performance of the combined rotary screen.

[0026] In order to solve the technical problem of how to realize the suspension assembly, the present invention adopts the following technical solution: the screen body is suspended on the frame through the suspension assembly, the suspension assembly is arranged at the four corners of the screen body, and the suspension assembly comprises: a suspension body, the upper part, the middle part and the lower part of the suspension body are respectively connected with the upper screen ship, the transmission device and the lower screen ship; A flexible suspension rod, one end of which is connected to the frame, and the other end of which is connected to the suspension body; the flexible suspension rod can be deformed as the screen body runs.

[0027] The four suspension components of the present invention are respectively arranged at the four corners of the screen body, which is conducive to the smooth rotation of the screen body.

[0028] In order to solve the technical problem that the flexible suspension rod 702 breaks and causes the screen body to fall, the present invention adopts the following technical solution, wherein the suspension assembly also includes a safety protection rope, which is used to prevent the screen body from falling when the flexible suspension rod breaks during the operation of the screen body; One end of the safety protection rope is connected to the frame, and the other end of the safety protection rope is connected to the suspension body.

[0029] In the process of operation of the screen body of the present invention, if the flexible suspension rod breaks abnormally, the safety protection wire rope can play a role in preventing the screen body from falling.

[0030] In order to solve the technical problem of how to realize the discharge collection device, the present invention adopts the following technical solution, and the discharge collection device includes: The finished product screening collection area is used to collect the finished product materials in the first screening area; a connecting channel is set between the finished product screening collection areas of different screening ships; A small debris screening and collecting area is arranged below the finished product screening and collecting area, and a connecting passage is arranged between the small debris screening areas of the screening ship; the small debris screening and collecting area is used to collect the small debris of the second screening area; When the screen body rotates, the screened finished materials and impurities are transported to the corresponding finished product screening collection area and small impurity screening collection area under the action of gravity.

[0031] The finished product screening collection areas of the upper and lower screening ships of the present invention are connected, the small miscellaneous screening collection areas of the upper and lower screening ships are connected, and the connecting channels are arranged on the left and the right, so the occupied area is small.

[0032] In order to solve the technical problem that the feed end of the screen is exposed to the environment, the present invention adopts the following technical solution: a revolving door is arranged at the feed end of the screen ship to shield the screen, and a material guiding channel is arranged on the revolving door to evenly guide the material into different screen ships arranged up and down.

[0033] The revolving door of the present invention is arranged at the front end of the screen body, and is used to cover the screens installed in the upper screen ship and the lower screen ship respectively. A material guide channel is arranged in the revolving door, and the material can be uniformly introduced into the upper screen ship and the lower screen ship. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a three-dimensional material distribution device of the present invention. Figure 1 ; Figure 2 It is a cross-sectional view of the material distribution device (feeding end, material distribution section) of the present invention; Figure 3 It is a schematic structural diagram of the second material balancing member of the material balancing section of the material distributing device of the present invention; Figure 4 The structure of the material distribution device of the present invention is schematically shown in FIG. Figure 2 ; Figure 5 It is a structural schematic diagram of the first material balancing component of the material balancing section of the material distributing device of the present invention; Figure 6 It is a structural schematic diagram of the second material balancing component of the material balancing section of the material distributing device of the present invention; Figure 7 1 is a schematic diagram of the material distributing state of the material distributing device of the present invention; Figure 8 2 is a schematic diagram of the material distributing state of the material distributing device of the present invention; Fig. 9 3 is a schematic diagram of the material distributing state of the material distributing device of the present invention; Fig.10 It is a three-dimensional material distribution device of the present invention. Figure 2 ; Fig.11 It is a structural schematic diagram of the rotating assembly of the material distribution device of the present invention; Fig.12 It is a structural schematic diagram of the active rotating shaft and power element of the rotating assembly of the material distributing device of the present invention; Fig.13 It is a schematic structural diagram of the active rotating shaft of the rotating assembly of the material distribution device of the present invention; Fig.14 2 is a schematic structural diagram of a second connecting rod of a rotating assembly of a material distributing device of the present invention; Fig.15 It is a structural schematic diagram of a mounting seat of a rotating assembly of a material distribution device of the present invention; Fig.16 It is a schematic diagram of the assembly structure of the driven rotating shaft of the rotating assembly of the material distributing device of the present invention and the corresponding second connecting rod; Fig.17 It is a schematic diagram of the structure of the material separation component for implementing the screening of four kinds of materials according to the present invention.

[0035] Fig.18 It is the three-dimensional structure of the rotary screen of the present invention. Figure 1 ; Fig.19 It is the three-dimensional structure of the rotary screen of the present invention. Figure 2 ; Fig. 20 is a cross-sectional view of the rotary screen of the present invention; Fig.21 yes Fig.19 Enlarged view of part A in the middle; Fig. 22 It is a front view of the rotary screen of the present invention; Fig.23 yes Fig. 22 Enlarged view of middle part B; Description of the drawings: 10 rotary screen; 100 racks; 200 material distribution device; 210 material feeding section; 211 material feeding port; 220 material distribution section; 221 first material distribution member; 2211 material distribution board 1; 222 second material distribution member; 2221 material distribution board 2; 2222 material distribution vertical board; 2223 material distribution channel 1; 223 first material distribution assembly; 2231 material distribution board 3; 2232 material distribution board 4; 224 second material distribution assembly; 2241 material distribution board 5; 2242 material distribution channel 2; 225 material distribution box; 230 material distribution section; 231 material distribution box; 232 material distribution plate; 233 rotating material guide assembly; 2331 material guide plate 1; 2332 material guide plate 2; 240 first material distribution port; 250 second material distribution port; 260 rotating assembly; 261 active rotating shaft; 2611 mounting plane 1; 2612 square boss; 262 driven rotating shaft; 2621 mounting plane 2; 263 first connecting rod; 264 second connecting rod; 2641 square hole; 2642 circular hole; 265 bearing with seat; 266 power element; 267 mounting support; 2671 first mounting seat; 2672 second mounting seat; 268 coupling; 300 screen body; 310 upper screen boat; 311 screen; 312 screen cleaning assembly; 3121 bracket; 3122 elastic cleaning ball; 320 lower screen boat; 400: discharging collection device; 401: finished product screening collection area; 402: small debris screening collection area; 403: connecting channel one; 404: connecting channel two.

[0036] 500 transmission device; 501 driving unit; 600 revolving door; 610 upper revolving door; 620 lower revolving door; 700 suspension assembly; 701 suspension body; 702 flexible suspension rod; 703 safety protection wire rope; 800 dynamic monitoring device; 801 travel switch; 802 switch mounting bracket; 803 touch ring; 804 spring probe. DETAILED DESCRIPTION

[0037] Example 1 like Figure 1 As shown, the material distribution device 200 includes a feeding section 210 , a material distribution section 220 and a material distribution section 230 .

[0038] The feed section 210 has a feed channel for materials to pass through. Figure 1 and Figure 2 As shown, a feed port 211 is provided on the feed section 210 , and the material enters from the feed port 211 , passes through the material equalizing section 220 and the material dividing section 230 , and then enters into the screen body.

[0039] The material equalizing section 220 is located downstream of the feed section 210, and the material equalizing section 20 is used to receive and evenly distribute the material conveyed by the feed channel. In one embodiment, the material equalizing section 220 has a first material equalizing piece 221 and a second material equalizing piece 222 that can evenly distribute the material, and the second material equalizing piece 222 is located downstream of the first material equalizing piece 221, and the first material equalizing piece 221 and the second material equalizing piece 222 are connected to the inner side of the material equalizing section 220 by welding. After the material flows out of the first material equalizing piece 221, it will pass through the second material equalizing piece 222. In order to ensure the material equalizing effect and take into account the material discharge speed, the first material equalizing piece 221 is installed tilted downward, that is, the first material equalizing piece 221 is tilted downward toward the outlet direction of the feed section 201. Preferably, the first material equalizing piece 221 is a material equalizing plate 2211. The material equalizing plate 2211 is preferably L-shaped.

[0040] like Figure 2 As shown, when the combined rotary screen is in normal use, the right end of the first material balancing member 221 is lower than the left end of the first material balancing member 221. The material discharge channel formed by the first material balancing member 221 and the outer wall of the material balancing section 220 can make the material flow in a predetermined direction. When in use, the first material balancing member 221 can be directly installed in the material balancing section 220.

[0041] like Figure 7 and Figure 8As shown, the second material balancing member 222 includes a second material balancing plate 2221 , and the second material balancing plate 2221 is also inclined downward toward the outlet of the feed section 210 .

[0042] In order to ensure the material balancing effect, the second material balancing member 222 is also provided with a plurality of material balancing vertical plates 2222. In one embodiment, there are 6 material balancing vertical plates 2222, and the 6 material balancing vertical plates 2222 are constructed into a tower structure. Specifically, the upper ends of the 6 material balancing vertical plates 2222 converge from the right end of the material balancing plate 2 221 and gradually disperse to the left end, and the 6 material balancing vertical plates 2222 constitute a plurality of material balancing channels 1 2223, and the material balancing channels 1 2223 gradually expand from right to left. The right sides of the material balancing vertical plates 2222 are all within the range of the first material balancing member 221 extending to the right. The arrangement of the above-mentioned material balancing vertical plates 2222 can make the material evenly spread in the arrangement direction of the material balancing vertical plates 2222, and then when the material is transported to the screen body, it can be spread more evenly in the width direction of the screen body. The tower structure can ensure that the amount of material entering each material distribution channel 2223 is the same as much as possible, and the left end of the material distribution channel 2223 is enlarged, which further disperses the material and enhances the material distribution effect. It can be understood that the number of material distribution vertical plates 2222 is not limited to 6.

[0043] The first material leveling member 221 and the second material leveling member 222 need to be provided at the same time. The material is first dispersed by the first material leveling member 221, and the dispersed material falls to the second material leveling member 222 for further dispersion, thereby ensuring a better material leveling effect; and the second material leveling member 222 is provided with a material leveling vertical plate 2222, so the material leveling effect is more obvious after the second material leveling.

[0044] In one embodiment, the material averaging section 220 can also be used as follows Figure 4 In the structure shown, the material-distributing section 220 has a first material-distributing component 223 and a second material-distributing component 224 that can distribute the material evenly. The second material-distributing component 224 is located downstream of the first material-distributing component 223 .

[0045] like Figure 5 As shown, the first material leveling assembly 223 includes a material leveling plate three 2231 and a material leveling plate four 2232. In order to ensure the material leveling effect and take into account the material discharge speed, the material leveling plate three 2231 is installed tilted downward, that is, the material leveling plate three 2231 is tilted to the right.

[0046] like Figure 5 As shown, in one embodiment, when the rotary screen is in normal use, the right end of the material balancing plate 3 2231 is lower than the left end of the material balancing plate 3 2231, and the angle between the material balancing plate 3 2231 and the horizontal plane is less than 90 degrees. The material discharge channel formed by the side of the material balancing plate 3 2231 and the material balancing box 225 can allow the material to flow in a predetermined direction. The structure of the material balancing plate 4 2232 is the same as that of the material balancing plate 3 2231, and the material balancing plate 4 2232 is also installed tilted downward, that is, the material balancing plate 4 2232 is tilted to the left.

[0047] like Figure 5 As shown, in one embodiment, when the rotary screen is in normal use, the left end of the material balancing plate four 2232 is lower than the right end of the material balancing plate four 2232, and the angle formed between the material balancing plate four 2232 and the horizontal plane is greater than 90 degrees.

[0048] Combination Figure 4 , Figure 5 and Figure 6 A second material balancing component 224 is also installed downstream of the first material balancing component 223, and the second material balancing component 224 includes a plurality of material balancing plates 2241.

[0049] In one embodiment, there are 7 material balancing plates 5 2241, and the 7 material balancing plates 5 2241 are constructed as a tower structure. Specifically, the upper ends of the 7 material balancing plates 5 2241 are aggregated from the downstream of the first material balancing component 223 and gradually dispersed to the lower end. The 7 material balancing plates 5 2241 and the box body constitute eight material balancing channels 2 2242, and the material balancing channels 2 2242 are gradually enlarged from top to bottom. The material balancing plates 5 2241 are all within the range of the extension of the first material balancing component 223. The arrangement of the above-mentioned material balancing plates 5 2241 can make the material evenly spread in the arrangement direction of the material balancing plates 5 2241, and then when the material is transported to the upper screening ship 310 or the lower screening ship 320, it can be spread more evenly in the width direction of the screening ship. Among them, the tower structure can ensure that the amount of material entering each material balancing channel 2 2242 is the same as much as possible, and the lower end of the material balancing channel 2 2242 becomes larger, further spreading the material evenly, and enhancing the material balancing effect. It can be understood that the number of the material distribution plates 2241 is not limited to 7. Through the above means, the material distribution device 200 of this embodiment can achieve material distribution without the need for additional power mechanisms.

[0050] like Figure 1 and Figure 4 As shown, the material dividing section 230 is located downstream of the material equalizing section 220. The material dividing section 230 is arranged at the lowermost end of the material dividing device 200. The material dividing section 230 is used to receive and convey the materials conveyed by the material equalizing section to different screening ships arranged above and below. A material channel control mechanism is arranged in the material dividing section to control the materials to enter different screening ships, that is, the materials can be switched among three conveying states. The first conveying state is to convey the materials to the upper screening ship; the second conveying state is to convey the materials to the lower screening ship; and the third conveying state is to convey the materials to the upper screening ship and the lower screening ship at the same time.

[0051] The material distribution section 230 includes a material distribution box 231, and the material distribution box 231 and the material distribution box 225 form a "convex" shaped structure. A material channel control mechanism is arranged in the material distribution box 231, including a material distribution plate 232 and a rotating material guide assembly 233.

[0052] The rotating material guide assembly 233 is spaced apart from the material dividing plate 232; a material dividing opening is formed between the rotating material guide assembly 233 and the material dividing plate 232, and the material dividing opening includes a first material dividing opening 240 and a second material dividing opening 250 spaced apart. The rotating material guide assembly 233 includes a material guide plate 1 2331 and a material guide plate 2332. The material guide plate 2332 is disposed on the rotating assembly 260, and the material guide plate 2332 is located above the material guide plate 1 2331, and the rotating assembly 260 is in contact with the material guide plate 1 2331.

[0053] The rotating material guide component 233 and the material dividing plate 232 of the material dividing section 230 can cooperate to enable the material to enter different screening ships. By adjusting the state of the rotating material guide component 233 and cooperating with the material dividing plate 232, the material can enter different screen bodies. Specifically: under the action of the rotating component, the material guide plate 2 rotates and fits with the material dividing plate on the corresponding second material dividing port, closing the second material dividing port, and the material enters the lower screening ship through the first material dividing port; the material guide plate 2 rotates in the opposite direction and fits with the material dividing plate on the corresponding first material dividing port, closing the first material dividing port, and the material enters the upper screening ship through the second material dividing port.

[0054] like Figure 7 As shown, the material distribution device 200 is divided into a plurality of first material distribution openings 240 and a plurality of second material distribution openings 250 by a plurality of rotating material guide components 233 and a plurality of material distribution plates 232, wherein the rotating material guide component 233 can rotate left and right, and specifically, the rotating material guide component 233 comprises a material guide plate 1 2331, a material guide plate 2332, and a rotating component 260. The material guide plate 2332 is mounted on the rotating component 260, the material guide plate 2332 is located above the material guide plate 1 2331, and the rotating component 260 is in contact with the material guide plate 1 2332.

[0055] Under the action of the rotating component 260, the guide plate 2332 rotates and fits with the corresponding material dividing plate on the second material dividing port, closing the second material dividing port, and the material enters the lower screening ship through the first material dividing port; the guide plate 2332 rotates in the opposite direction and fits with the corresponding material dividing plate on the first material dividing port, closing the first material dividing port, and the material enters the upper screening ship through the second material dividing port.

[0056] When the rotating guide assembly 233 is placed Figure 7In the position shown, the discharging directions of the adjacent first material distribution openings 240 and the second material distribution openings 250 are different. Taking the two adjacent material distribution openings on the left as an example, the discharging direction of the second material distribution opening 250 is inclined upward relative to the discharging direction of the first material distribution opening 240. The discharging direction of the second material distribution opening 250 leads to the upper screening ship 310, and the discharging direction of the first material distribution opening 240 leads to the lower screening ship 320. The number of the first material distribution openings 240 and the second material distribution openings 250 is the same, so that the amount of material entering different screening ships can be equal. In this embodiment, the discharging directions of the adjacent first material distribution openings 240 and the second material distribution openings 250 are different, so that they can lead to different screening ships, which is suitable for the material leveling needs of the rotary screen with multiple layers of screening ships and the same aperture size of the screening surface configured in the screening ships. This type of rotary screen can double the production capacity without changing the floor area.

[0057] Specifically, when the rotating material guide assembly 233 is placed Figure 8 When the material is in the position shown, the second material distribution opening 250 is covered by the rotating material guide component 233. At this time, the rotating material guide component 233 and the material distribution plate 232 are arranged at an obtuse angle, that is, the right end of the rotating material guide component 233 is lower than the left end, and the material cannot enter the corresponding screening ship through the second material distribution opening 250. When the material falls above the second material distribution opening 250, the rotating material guide component 233 guides the material into the first material distribution opening 240 and enters the corresponding screening ship. When the rotating material guide component 233 is placed in Fig. 9 When the material falls on the first material distribution opening 240, the material is guided into the second material distribution opening 250 by the action of the rotating material guide assembly 233 and then enters the corresponding screening ship. In this embodiment, when the rotating material guide assembly 233 is placed in the position shown in FIG. Figure 8 When the rotating material guide assembly 233 is in the position shown, the material enters the lower screening ship only through the first material distribution opening 240. Fig. 9 In the position shown, the material enters the lower screening ship only through the second material distribution port 250. It is suitable for the material leveling needs of the rotary screen with multiple layers of screening ships and screen surfaces with different apertures in the screening ship. This type of rotary screen can screen a variety of materials without changing the screen.

[0058] In one embodiment, in order to realize automatic control of the position of the rotating material guide assembly 233, as shown in FIG. Fig.10 As shown, the material distribution device 200 is provided with a rotating assembly 260. Fig.11 As shown, the rotating assembly 260 includes a driving rotating shaft 261 , a plurality of driven rotating shafts 262 , a connecting rod assembly, and a power element 266 .

[0059] The active rotating shaft 261 is rotatably mounted on the material distribution box 231. Specifically, to ensure the reliability of the rotating assembly 260, a seat bearing 265 is installed on the material distribution device 200, and the seat bearing 265 is fixed to the right side of the material distribution device 200 by bolts. The active rotating shaft 261 is mounted on the seat bearing 265. The active rotating shaft 261 is provided with a corresponding material guide plate 2332.

[0060] The connecting rod assembly includes a first connecting rod 263 and a second connecting rod 264. A plurality of second connecting rods 264 are arranged at intervals along the length direction of the first connecting rod 263, one end of the second connecting rod 264 is rotatably connected to the first connecting rod 263, and the other end of the second connecting rod 264 is connected to the corresponding driven rotating shaft 262 or the active rotating shaft 261. Specifically, the second connecting rod 264 and the active rotating shaft 261 (driven rotating shaft 262) are fixedly connected by a nut.

[0061] The driven rotating shaft 262 is rotatably arranged on the material distribution box 231. The driven rotating shaft 262 is installed on the corresponding seat bearing 265. The driven rotating shaft 262 is connected to the driving rotating shaft 261 via a connecting rod assembly. The driven rotating shaft 262 is provided with a corresponding material guide plate 2232.

[0062] In order to prevent the second connecting rod 264 and the active rotating shaft 261 (driven rotating shaft 262) from rotating relative to each other, an anti-rotation component is provided on one end of the active rotating shaft or the driven rotating shaft and the corresponding second connecting rod, including: a polygonal boss provided on the shaft head of the active rotating shaft or the driven rotating shaft. The anti-rotation component also includes a polygonal connecting hole provided at the connecting end of the second connecting rod, and the polygonal connecting hole cooperates with the polygonal boss. Specifically, a square boss 2612 is provided on the active rotating shaft 261 (driven rotating shaft 262), and a square hole 2641 is provided on the second connecting rod 264, and the cooperation of the two can prevent the second connecting rod 264 and the active rotating shaft 261 (driven rotating shaft 262) from rotating relative to each other.

[0063] In order to improve the reliability of welding between the guide plate 2332 of the rotating guide assembly 233 and the active rotating shaft 261, as shown in FIG. Fig.13 As shown, the active rotating shaft 261 is provided with a mounting plane 2611 that cooperates with the material guide plate 2332 of the rotating material guide assembly 233. Fig.16 As shown, a second mounting plane 2621 is provided on the driven rotating shaft 262 to cooperate with the second material guide plate 2332 of the rotating material guide assembly 233 .

[0064] A rotating assembly is provided between the second connecting rod 264 and the first connecting rod 263, including a circular hole 2642 provided at the end of the second connecting rod 264, and circular holes provided at intervals on the first connecting rod 263. A pin is provided in the circular hole 2642 of the second connecting rod and the corresponding circular hole of the first connecting rod and is locked by a split pin. Fig.14 As shown, in order to ensure that the second connecting rod 264 and the first connecting rod 263 are movably connected, a round hole 2642 is provided on the second connecting rod 264, and the two are movably connected through a pin shaft and a cotter pin.

[0065] like Fig.12 As shown, the rotating assembly 260 also includes a mounting bracket 267 and a coupling 268. Fig.15 As shown, the mounting support 267 includes a first mounting support 2671 and a second mounting support 2672, wherein the first mounting support 2671 is fixedly connected to the material distribution device 200 by bolts; the second mounting support 2672 is fixedly connected to the power element 266 by bolts. The power element 266 is installed on the material distribution box 231 through the mounting support. The power element 266 is driven to connect the active rotating shaft 261, and specifically, the output shaft of the power element is connected to the active rotating shaft 261 through a coupling 268.

[0066] The power element moves, driving the active rotating shaft to rotate, and the active rotating shaft drives the second material guide plate thereon to rotate. Driven by the connecting rod assembly, the driven rotating shaft rotates synchronously, so that the second material guide plate can be in different positions, thereby controlling the materials to enter different screening ships.

[0067] like Fig.16 As shown, the structure of the driven rotating shaft 262 is similar to that of the driving rotating shaft 261 , and the connection method between the driven rotating shaft 262 and the second connecting rod 264 is similar to that between the driving rotating shaft 261 and the second connecting rod 264 , which will not be repeated here.

[0068] In one embodiment, the power element 266 drives the active rotating shaft 261 to rotate, and the active rotating shaft 261 drives the rotating material guide assembly 233 to rotate. The driven rotating shaft 262 rotates synchronously under the drive of the first connecting rod 263 and the second connecting rod 264, so that the rotating material guide assembly 233 is respectively in Figure 7 , Figure 8 and Fig. 9 The positions shown are achieved to control the material entering different screen ships.

[0069] Example 2 like Fig.18 As shown, the rotary screen 10 includes a frame 100 , a material dividing device 200 , a screen body 300 , a material discharging and collecting device 400 , a transmission device 500 , a suspension assembly 700 , a dynamic monitoring device 800 , and a revolving door 600 .

[0070] The screen body 300 includes an upper screen ship 310 and a lower screen ship 320. The upper screen ship 310 and the lower screen ship 320 constitute the screen body and can swing together. The screen body 300 is suspended on the frame 100 through the suspension assembly 700. Fig.18 , Fig. 22 and Fig.23As shown, the upper screening ship 310 is arranged above the transmission device 500 , and the lower screening ship 320 is arranged below the transmission device 500 . The upper screening ship 310 , the transmission device 500 , and the lower screening ship 320 are suspended on the frame 100 through a suspension assembly 700 .

[0071] In one embodiment, Fig. 22 , Fig.23 As shown, the suspension assembly 700 includes a suspension body 701 and a flexible suspension rod 702. The upper, middle and lower parts of the suspension body 701 are respectively connected to the upper screen ship 310, the transmission device 500 and the lower screen ship 320. One end of the flexible suspension rod 702 is connected to the suspension body 701, and the other end of the flexible suspension rod 702 is connected to the frame 100. When the screen body is running, the flexible suspension rod 702 can be deformed with the operation of the screen body.

[0072] In one embodiment, the suspension assembly 700 further includes a safety wire rope 703, which is installed in the same manner as the flexible suspension rod 702. If the flexible suspension rod 702 breaks abnormally during the operation of the screen body, the safety wire rope 703 can play a role in preventing the screen body from falling. In the specific setting, the number of suspension assemblies 700 is 4, and the 4 suspension assemblies 700 are respectively arranged at the four corners of the screen body 300, which is conducive to the smooth rotation of the screen body.

[0073] like Fig.19 As shown, taking the upper screening ship 310 as an example, a layer of screen 311 is provided in the upper screening ship 310. In one embodiment, as Fig.19 As shown, in order to facilitate the screen body to deliver the screened finished materials and impurities into the corresponding material channel of the discharging and collecting device 400, the screen 311 is tilted downward relative to the horizontal direction in the direction from the front end to the rear end, that is, in the left and right direction. In this article, when referring to the tilt or tilt direction, unless otherwise specified, the horizontal direction is used as a reference. Specifically, the right end of the screen 311 tilts downward so that in the vertical direction, the right end of the screen 311 is lower than the left end of the screen 311. The upper screen ship 310 and the lower screen ship 320 are each tilted downward, and the screen body composed of the two is tilted downward. When the screen body performs a rotary motion, the screened finished materials and impurities are transported to the corresponding material channel under the action of gravity, thereby improving the efficiency of the entire machine.

[0074] The lower screening ship 320 and the upper screening ship 310 have the same structure, and a layer of screen is installed in each of them. The upper and lower screening ships can be equipped with screens of the same aperture or screens of different apertures. The combined rotary screen of the present invention is a device for realizing multi-stage screening of materials (such as feed, grain, etc.), which includes a screen body, and the screen body includes multiple layers of vertically arranged screening ships, which increases the screening area without increasing the floor space. Screens of different aperture sizes can be configured inside the multi-screen ship body, and in conjunction with the material channel control device, it can realize the screening of two or more materials of different particle sizes without changing the screen.

[0075] In one embodiment, in order to prevent the screen from getting stuck, a screen cleaning assembly 312 is provided on the upper screening ship 310, including a plurality of elastic cleaning balls 3122 and a cleaning ball bracket 3121; the screen 311 is arranged above the cleaning ball bracket 3121, and the elastic cleaning balls 3122 are evenly distributed in a plurality of partition frames of the cleaning ball bracket 3121. The cleaning balls 3122 are used to clean the materials stuck on the screen 311 during the screening process to prevent the screen 311 from getting stuck and to ensure the screening performance of the equipment. The cleaning ball bracket 3121 supports the screen 311 and the cleaning balls 3122.

[0076] A first screening area is formed above the screen 311 in the upper screening ship 310 , and a second screening area is formed below the cleaning ball bracket 3121 .

[0077] The discharging collection device 400 is arranged at the rear end of the screen body 300. Specifically, the discharging collection device 400 is connected to the tail of the screen body, and is used for collecting and recovering the finished products and impurities after screening. Each screening area is connected to different material channels of the discharging collection device 400. In this embodiment, the first screening area and the second screening area are respectively configured as the finished product screening collection area 401 and the small impurity screening collection area 402. More specifically, taking the screening of poultry feed as an example, the finished feed is left in the finished product screening collection area 401, and the impurities with a particle size smaller than the finished feed are defined as small impurities, which can enter the small impurity screening collection area 402. The screen setting method in the lower screening ship 320 is the same as the screen setting method in the upper screening ship 310, and will not be repeated. A connecting channel 1 403 is set between the finished product screening collection area 401 of the upper screening ship and the lower screening ship; a connecting channel 2 404 is set between the small impurity screening partitions of the upper screening ship and the lower screening ship.

[0078] The material dividing device 200 is arranged at the front end of the screen body 300. Specifically, Fig.18 As shown, the material distribution device 200 is installed at the upper left end of the upper screening ship. The material distribution device can evenly deliver the material into the multi-layer screening ship, wherein the material distribution device is also provided with a material channel control device, through which the material can be controlled to enter a specific layer of the multi-layer screening ship.

[0079] The revolving door 600 is arranged at the front end of the screen body, and the revolving door 600 includes an upper revolving door 610 and a lower revolving door 620. The upper revolving door 610 is used to shield the screens 311 installed in the upper screen ship 310 and the lower screen ship 320. A material guide channel is provided in the upper revolving door 610, and the material can be uniformly introduced into the upper screen ship 310. The lower revolving door 620 is used to shield the screen 311 installed in the lower screen ship 320. A material guide channel is provided in the lower revolving door, and the material can be uniformly introduced into the lower screen ship 320.

[0080] like Fig.18As shown, the transmission device 500 is used to drive the screen body to perform a rotary motion. In this embodiment, the transmission device 500 is used to drive the screen body (the upper screen ship 310 and the lower screen ship 320) to perform a rotary motion. The transmission device 500 is powered by an external drive unit 501, and then the transmission device 500 drives the upper screen ship 310 and the lower screen ship 320 to perform a rotary motion, thereby screening the material.

[0081] The dynamic monitoring device 800 is used to detect the movement of the screen body. When the operation is abnormal, the transmission device 500 can be controlled to stop, thereby improving the safety performance of the whole machine. Fig.21 As shown, the dynamic monitoring device 800 includes a travel switch 801, a switch mounting bracket 802 and a touch ring 803. The switch mounting bracket 802 is mounted on one side of the frame 100, the travel switch 801 is mounted on the switch mounting bracket 802, and the touch ring 803 is mounted on one side of the upper screen ship 310, and the touch ring 803 rotates with the screen body. A spring probe 804 is provided on the travel switch 801. When the screen body operates abnormally, the touch ring 803 will touch the spring probe 804, and the travel switch 801 will be activated, so that the power supply of the driving part 501 is disconnected, thereby stopping the combined rotary screen. This device greatly improves the safety performance of the combined rotary screen.

[0082] like Fig.17 As shown, this material dividing device is equipped with 4 groups of screening ships, which can also control the materials to enter different screening ships for screening. This example can realize the screening of 4 materials with different particle sizes without changing the screen surface.

[0083] The rotary grading screen of the present invention comprises a material balancing mechanism and a material dividing mechanism. The rotary screen comprises an upper screening ship and a lower screening ship. The upper screening ship and the lower screening ship respectively have a finished product screening collection area and a small miscellaneous screening collection area arranged from top to bottom. Each finished product screening collection area is respectively connected to a number of connecting channels. The cooperation of the material balancing mechanism and the material dividing mechanism can make the material evenly spread in the arrangement direction of the material balancing plate, and then spread more evenly in the width direction of the screening ship. At the same time, the material can also be controlled to enter different screening ships, so that the same equipment can be used to screen different materials, and one machine can be used for multiple purposes.

Claims

1. A material distribution device, characterized in that it comprises: A feeding section, wherein a feeding channel is arranged in the feeding section; A material distribution section, located downstream of the feed section, and used for receiving and evenly distributing the material conveyed by the feed channel; The material dividing section is located downstream of the material equalizing section. The material dividing section is used to receive and convey the material conveyed by the material equalizing section to different screening ships arranged above and below. A material channel control mechanism is arranged in the material dividing section to control the material to enter different screening ships, that is, the material can be switched among three conveying states. The first conveying state is to convey the material to the upper screening ship; the second conveying state is to convey the material to the lower screening ship; and the third conveying state is to convey the material to the upper screening ship and the lower screening ship at the same time.

2. The material distribution device according to claim 1 is characterized in that: The material equalization section comprises: Material equalization box; A material distribution component is arranged in the material distribution box, and the material distribution component includes: A first material balancing member, wherein the discharge end of the first material balancing member is tilted downward relative to the feed end thereof; the first material balancing member comprises a first material balancing plate; A second material balancing member is located downstream of the first material balancing member; the second material balancing member is arranged opposite to and overlaps the first material balancing member; the discharge end of the second material balancing member is arranged to be tilted downward relative to the feed end thereof; the second material balancing member comprises: Equalizing plate 2; The material balancing plates are arranged on the second material balancing plate. The material balancing plates are radially distributed with the middle of the feed end of the second material balancing plate as the center. Material balancing channels are formed between the material balancing plates. The material balancing channels gradually become larger along the material conveying direction.

3. The material distribution device according to claim 1 is characterized in that: The material equalization section comprises: Material equalization box; A material distribution component is arranged in the material distribution box, and the material distribution component includes: The first material balancing assembly comprises a third material balancing plate and a fourth material balancing plate, wherein the fourth material balancing plate is located downstream of the third material balancing plate; the third material balancing plate and the fourth material balancing plate are arranged opposite to each other and overlap each other, and are arranged to tilt downward; The second material equalizing assembly is located downstream of the first material equalizing assembly. The second material equalizing assembly includes a plurality of material equalizing plates five that are spaced apart from each other. The middle material equalizing plate five is vertically arranged, and the upper portions of the material equalizing plates five on both sides are inclined and close to the middle material equalizing plate. A material equalizing channel is formed between the material equalizing plates five, and the material equalizing channel gradually becomes larger along the feeding direction.

4. The material distribution device according to claim 2 or 3, characterized in that: The material distribution section includes a material distribution box body, and the material distribution box body and the material distribution box body form a "convex" shape structure; The material channel control mechanism is arranged in the material distribution box, and the material channel control mechanism comprises: Separator plate; A rotating material guide component is spaced apart from the material dividing plate; a material dividing opening is formed between the rotating material guide component and the material dividing plate, and the material dividing opening includes a first material dividing opening and a second material dividing opening spaced apart from each other. The rotating material guide component includes: Guide plate 1; A second material guide plate is arranged on the rotating assembly, the second material guide plate is located above the first material guide plate, and the rotating assembly is in contact with the first material guide plate; Under the action of the rotating component, the second material guide plate rotates and fits with the material dividing plate on the corresponding second material dividing port, closing the second material dividing port, and the material enters the lower screening ship through the first material dividing port; the second material guide plate rotates in the opposite direction and fits with the material dividing plate on the corresponding first material dividing port, closing the first material dividing port, and the material enters the upper screening ship through the second material dividing port.

5. The material distribution device according to claim 4 is characterized in that: The rotating assembly comprises: An active rotating shaft is rotatably arranged on the material distribution box; a corresponding material guide plate 2 is arranged on the active rotating shaft; A driven rotating shaft is rotatably arranged on the material distribution box; the driven rotating shaft is connected to the driving rotating shaft via a connecting rod assembly; a corresponding material guide plate 2 is arranged on the driven rotating shaft; The connecting rod assembly includes a first connecting rod and a second connecting rod, wherein a plurality of second connecting rods are arranged on the first connecting rod along its length direction at intervals, one end of the second connecting rod is rotatably connected to the first connecting rod, and the other end of the second connecting rod is connected to the corresponding driven rotating shaft or the active rotating shaft; A power element is arranged on the material distribution box, and the power element is drivingly connected to the active rotating shaft; The power element moves, driving the active rotating shaft to rotate, and the active rotating shaft drives the second material guide plate thereon to rotate. Driven by the connecting rod assembly, the driven rotating shaft rotates synchronously, so that the second material guide plate can be in different positions, thereby controlling the materials to enter different screening ships.

6. The material distribution device according to claim 5 is characterized in that: An anti-rotation assembly is provided on one end of the active rotating shaft or the driven rotating shaft and the corresponding second connecting rod, including: A polygonal boss provided on the shaft head of the driving rotating shaft or the driven rotating shaft; A polygonal connecting hole is provided at the connecting end of the second connecting rod, and the polygonal connecting hole matches with the polygonal boss; A rotating assembly is arranged between the second connecting rod and the first connecting rod, comprising: A round hole is provided at the other end of the second connecting rod; The first connecting rod is provided with circular holes at intervals. A pin shaft is arranged in the circular hole of the second connecting rod and the corresponding circular hole of the first connecting rod and is locked by a cotter pin.

7. Rotary screen, characterized by: include: frame; A screen body, the screen body comprising a plurality of layers of screen boats arranged from top to bottom; The material distribution device according to any one of claims 1 to 6 is arranged at the feed end of the screen body and is used to uniformly transport the material to the screen ships at different layers; A discharge collection device is arranged at the discharge end of the screen body and is used for collecting and recovering the finished products and impurities after screening by the screening ship; A transmission device is driven and connected to the screen body, and the transmission device is used to drive the screen body to perform a rotational motion.

8. The rotary screen according to claim 7, characterized in that: The screening ship is provided with a screen, and a first screening area is formed above the screen; the discharge end of the screen is arranged to be inclined downward relative to the feed end of the screen; The screen mesh apertures of upper and lower adjacent screen ships are the same or different.

9. The rotary screen according to claim 7, characterized in that: The screening ship is provided with a screen cleaning assembly for cleaning the materials stuck on the screen during the screening process; the screen cleaning assembly comprises: A bracket is used to support the screen; a second screening area is formed below the bracket; An elastic cleaning ball is arranged in the bracket, and the elastic cleaning ball is located below the screen.

10. The rotary screen according to claim 9, characterized in that: A partition frame is arranged on the bracket to evenly distribute the elastic cleaning balls in the bracket.

11. The rotary screen according to claim 7, characterized in that: The rotary screen includes a dynamic monitoring device for detecting the movement of the screen body, and when the screen body operates abnormally, the transmission device is controlled to stop; The dynamic monitoring device comprises: A touch ring is arranged on the screen body, and the touch ring rotates along with the screen body; The travel switch assembly is arranged on the frame. When the travel switch assembly touches the touch ring, it indicates that the screen body is operating abnormally.

12. The rotary screen according to claim 11, characterized in that: The travel switch assembly comprises: A mounting bracket, arranged on the frame; A travel switch is arranged on the mounting bracket; A spring probe is arranged on the travel switch. When the spring probe touches the touch ring, it indicates that the screen body operates abnormally.

13. The rotary screen according to claim 7, characterized in that: The screen body is suspended on the frame through a suspension assembly, and the suspension assembly is arranged at the four corners of the screen body. The suspension assembly comprises: a suspension body, the upper part, the middle part and the lower part of the suspension body are respectively connected to the upper screen ship, the transmission device and the lower screen ship; A flexible suspension rod, one end of which is connected to the frame, and the other end of which is connected to the suspension body; the flexible suspension rod can be deformed as the screen body runs.

14. The rotary screen according to claim 13, characterized in that: The suspension assembly also includes a safety rope, which is used to prevent the screen from falling when the flexible suspension rod breaks during the operation of the screen; One end of the safety protection rope is connected to the frame, and the other end of the safety protection rope is connected to the suspension body.

15. The rotary screen according to claim 9, characterized in that: The discharging and collecting device comprises: The finished product screening collection area is used to collect the finished product materials in the first screening area; a connecting channel is provided between the finished product screening collection areas of adjacent screening ships; A small debris screening and collecting area is arranged below the finished product screening and collecting area, and a connecting channel is arranged between the small debris screening areas of adjacent screening ships; the small debris screening and collecting area is used to collect the small debris of the second screening area; When the screen body rotates, the screened finished materials and impurities are transported to the corresponding finished product screening collection area and small impurity screening collection area under the action of gravity.

16. The rotary screen according to claim 7, characterized in that: A revolving door is arranged at the feeding end of the screening ship for shielding the screen, and a material guiding channel is arranged on the revolving door for uniformly guiding the materials into different screening ships arranged up and down.

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