Milling material crushing and screening device

Abstract

The utility model discloses a milling material crushing and screening device, relates to the technical field of crushing machinery, and aims to solve the problems that an existing milling material crushing and screening device is large in vibration noise during use, can cause large smoke dust during vibration, greatly affects the working environment of a construction site, and brings great hidden danger to the body health of constructors. The crushing and screening device comprises a bottom supporting plate, a support, a conveying belt bracket, a crushing unit support, a crushing unit, a conveying belt unit, a discharging bin, a screening barrel unit, a bottom end bracket, a conveying belt power motor and a screening barrel power motor. The crushing unit comprises a crushing bin, a forward crushing roller, a reverse crushing roller, two motor bins, two driving motors and two transmission assemblies. The screening cylinder unit comprises a feeding end connecting cylinder section, a discharging end screening cylinder section, M screening cylinder sections and M + 1 connecting rings. The milling material crushing and screening device is mainly used for crushing and screening milling materials.

Description

Technical Field

[0001] The utility model relates to the technical field of crushing machinery, in particular to a milling material crushing and screening device. Background Art

[0002] Milling material crushing and screening device is a device used for crushing and screening various raw materials, usually used in construction, mining, metallurgy and other industries. The existing milling material crushing and screening device is generally composed of two parts: a crushing structure and a screening structure. The crushing structure is mainly a roller crusher, and the screening structure mostly adopts a layered screening structure. The advantage of the layered screening structure is that it has a larger feeding area, which is convenient for cooperating with the discharge end of the roller crusher to avoid the random scattering of materials, and can ensure that the crushed materials accurately enter the screening structure for screening. However, the layered screening structure also has certain defects, that is, the layered screening structure is mostly an open structure, and the vibration noise is very large during operation, which will cause a lot of smoke and dust during vibration, which greatly affects the working environment of the construction site and brings great hidden dangers to the health of construction workers. Therefore, in order to overcome the above defects, a new type of milling material crushing and screening device has been developed, which is in line with actual needs. Utility Model Content

[0003] The utility model provides a milling material crushing and screening device to solve the problems that the existing milling material crushing and screening device has large vibration noise during use and generates large smoke and dust during vibration, which greatly affects the working environment of the construction site and poses a great hidden danger to the health of the construction workers.

[0004] A milling material crushing and screening device, comprising a bottom support plate, a bracket, a conveyor belt bracket, a crushing unit bracket, a crushing unit, a conveyor belt unit, a lower hopper, a screening drum unit, a bottom bracket, a conveyor belt power motor and a screening drum power motor;

[0005] The bracket is arranged on the top of the bottom supporting plate, and the bottom of the bracket is fixedly connected to the top of the bottom supporting plate, the conveyor belt bracket is arranged on the top of the bracket, and the bottom of the conveyor belt bracket is fixedly connected to the top of the bracket, the conveyor belt unit and the conveyor belt power motor are both installed on the conveyor belt bracket, and the conveyor belt power motor is used to drive the conveyor belt unit to work, the crushing unit is arranged just above the head end of the conveyor belt unit, and the crushing unit is installed on the conveyor belt bracket through the crushing unit bracket, the lower bin is arranged obliquely below the tail end of the conveyor belt unit, and the lower bin is installed on the conveyor belt bracket, the screening drum unit is inserted on the discharge end of the lower bin in a downwardly inclined direction, and the feeding end of the screening drum unit is rotatably connected to the discharge end of the lower bin through a bearing, the discharge end of the screening drum unit is installed on the bottom supporting plate through the bottom end bracket, the screening drum power motor is installed on the bracket, and the screening drum power motor is used to drive the screening drum unit to rotate;

[0006] Further, the motor mounting seat is arranged on one end of the support near the screening drum unit, and the screening drum power motor is mounted on the motor mounting seat, and the axis of the power output shaft of the screening drum power motor is arranged in parallel with the axis of the screening drum unit;

[0007] Further, the motor supporting plate is arranged near the head end of the conveying belt unit, the conveying belt power motor is mounted on the motor supporting plate, the discharge bin supporting plate is arranged near the tail end of the conveying belt unit, and the discharge bin is mounted on the discharge bin supporting plate;

[0008] Further, the crushing unit comprises a crushing bin, a forward crushing roller, a reverse crushing roller, two motor bins, two driving motors and two transmission assemblies, the crushing bin is arranged directly above the head end of the conveying belt unit, and the crushing bin is mounted on the top of the conveying belt supporting plate through the crushing unit support, the two motor bins are oppositely arranged on the two sides of the crushing bin, and each motor bin is fixedly connected with the crushing bin, one driving motor is arranged in each motor bin, the motor housing of each driving motor is fixedly connected with the inner wall of the motor bin through a motor mounting seat, the power output shaft of each driving motor extends to the outside of the motor bin, the forward crushing roller and the reverse crushing roller are oppositely arranged in parallel in the crushing bin, and the forward crushing roller and the reverse crushing roller are cooperatively arranged, the forward crushing roller and the reverse crushing roller are rotatably connected with the bin wall of the crushing bin, one end of the forward crushing roller extends to the outside of the crushing bin and is drivingly connected with the power output shaft of one driving motor through one transmission assembly, one end of the reverse crushing roller extends to the outside of the crushing bin and is drivingly connected with the power output shaft of the other driving motor through the other transmission assembly, and the rotation direction of the forward crushing roller is opposite to that of the reverse crushing roller;

[0009] Further, the crushing bin comprises a guide bin section, a working bin section and a discharge bin section, the guide bin section, the working bin section and the discharge bin section are sequentially arranged from top to bottom, the guide bin section and the discharge bin section are prismatic bin sections, and the working bin section is a rectangular bin section, the large end of the guide bin section is a feeding end, the small end of the guide bin section is a discharging end, the large end of the discharge bin section is a feeding end, the small end of the guide bin section is a discharging end, the discharging end of the guide bin section is in communication with the feeding end of the working bin section, and the discharging end of the working bin section is in communication with the feeding end of the discharge bin section, the forward crushing roller and the reverse crushing roller are oppositely arranged in parallel in the working bin section, and the forward crushing roller and the reverse crushing roller are rotatably connected with the bin wall of the working bin section, the two motor bins are oppositely arranged on the two sides of the working bin section, and each motor bin is fixedly connected with the working bin section;

[0010] Further, the forward crushing roller comprises a forward shaft, two forward end pressure discs, N forward interval discs and N+1 forward crushing discs, the forward shaft is arranged in the working bin section, both ends of the forward shaft are rotationally connected with the working bin section, N+1 forward crushing discs are sequentially and equidistantly sleeved on the forward shaft along the length extension direction of the forward shaft, one forward interval disc is arranged between every two adjacent forward crushing discs, and N forward interval discs are sleeved on the forward shaft, the two forward end pressure discs are arranged outside the two forward crushing discs at the ends, and the two forward end pressure discs are sleeved on the forward shaft;

[0011] Further, the reverse crushing roller comprises a reverse shaft, two reverse end pressure discs, N reverse crushing discs and N+1 reverse interval discs, the reverse shaft is arranged in the working bin section, both ends of the reverse shaft are rotationally connected with the working bin section, N+1 reverse interval discs are sequentially and equidistantly sleeved on the reverse shaft along the length extension direction of the reverse shaft, one reverse crushing disc is arranged between every two adjacent reverse interval discs, and N reverse crushing discs are sleeved on the reverse shaft, the two reverse end pressure discs are arranged outside the two reverse interval discs at the ends, and the two reverse end pressure discs are sleeved on the reverse shaft;

[0012] Further, a driven pulley is sleeved on the feed end of the screening drum unit, a driving pulley is sleeved on the power output shaft of the screening drum power motor, and the driven pulley and the driving pulley are transmissionally connected through a belt;

[0013] Further, the screening drum unit comprises an inlet end connecting drum section, an outlet end screening drum section, M screening drum sections and M+1 connecting rings, the M screening drum sections are sequentially arranged along the length extension direction of the screening drum unit to form a screening area, every two adjacent screening drum sections in the screening area are connected through a connecting ring, the screening drum section at the head end of the screening area is connected with one end of the inlet end connecting drum section through a connecting ring, the other end of the inlet end connecting drum section is inserted on the outlet end of the discharge bin, and the other end of the inlet end connecting drum section is rotationally connected with the outlet end of the discharge bin through a bearing, the screening drum section at the tail end of the screening area is connected with one end of the outlet end screening drum section through a connecting ring, and the outlet end screening drum section is installed on the bottom supporting plate through a bottom bracket;

[0014] The outlet end of the outlet end screening drum section is provided with an outlet guiding shovel, and the outlet guiding shovel is integrally formed with the outlet end screening drum section;

[0015] The inside of the screening area is provided with a spiral guiding rubber belt extending from the head end to the tail end, and the spiral guiding rubber belt is adhesively fixed with the inner wall of the screening area;

[0016] Further, a material falling guide bin is arranged below the screening area, the material falling guide bin is installed on the bottom supporting plate through a support, a feeding end of the material falling guide bin is arranged corresponding to the screening area, and a discharging end of the material falling guide bin is arranged towards the bottom supporting plate.

[0017] The application has the following beneficial effects compared with the prior art:

[0018] 1. The milling material crushing and screening device provided by the application effectively combines a roller crusher with a cylindrical screening structure. The cylindrical screening structure is a closed screening structure. It relies on its own rolling to move the material in the screening cylinder in a spiral manner, and in the process, different sizes of materials are discharged from the corresponding gaps, achieving the screening purpose. Compared with the existing milling material crushing and screening device, the use of the cylindrical screening structure to replace the existing layered screening structure can greatly reduce the noise generated in the screening process, and the amount of smoke generated by the cylindrical screening structure during work is much smaller than that generated by the layered screening structure during work, which is more conducive to ensuring the working environment of the construction site and greatly guarantees the health of the construction personnel.

[0019] 2. The milling material crushing and screening device provided by the application takes into account that the feeding end of the cylindrical screening structure is small. When the crushed material is transported to the cylindrical screening structure, the large discharging end and the small feeding end cooperate, which easily causes the material to scatter, greatly reducing the accuracy of the feeding. Therefore, the application introduces a discharging bin and a conveyor belt structure, and reasonably configures the positional relationship between the two through a multi-layer support structure, which can accurately feed the crushed material into the cylindrical screening structure for screening, greatly improving the accuracy of material input and providing great guarantee for the working continuity of the milling material crushing and screening processes. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a structural schematic view of the milling material crushing and screening device described in the application.

[0021] Figure 2 It is a partial sectional view of the milling material crushing and screening device described in the application.

[0022] Figure 3 It is a structural schematic view of the crushing unit in the milling material crushing and screening device described in the application.

[0023] Figure 4 It is a cooperation schematic view of the forward crushing roller and the reverse crushing roller in the milling material crushing and screening device described in the application.

[0024] Figure 5 It is a schematic view of the forward crushing disc in the milling material crushing and screening device described in the application.

[0025] Figure 6Figure 1 is a schematic diagram of the reverse crushing disc in the milling material crushing and screening device described in the present application;

[0026] Figure 7 Figure 2 is a schematic diagram of the driving of the screening drum unit in the milling material crushing and screening device described in the present application;

[0027] Figure 8 Figure 3 is a schematic diagram of the structure of the screening drum unit in the milling material crushing and screening device described in the present application;

[0028] Figure 9 Figure 4 is a schematic diagram of the internal structure of the screening drum unit in the milling material crushing and screening device described in the present application;

[0029] Figure 1 is a schematic diagram of the reverse crushing disc in the milling material crushing and screening device described in the present application; DETAILED DESCRIPTION

[0030] Specific implementation one: combined Figures 1 to 9 In this embodiment, a milling material crushing and screening device is provided, which includes a bottom support plate 1, a support 2, a conveyor belt bracket 3, a crushing unit support 4, a crushing unit 5, a conveyor belt unit 6, a discharge bin 7, a screening drum unit 8, a bottom bracket 10, a conveyor belt power motor 11, and a screening drum power motor 12.

[0031] The bracket 2 is arranged on the top of the bottom support plate 1, and the bottom of the bracket 2 is fixedly connected to the top of the bottom support plate 1, the conveyor belt bracket 3 is arranged on the top of the bracket 2, and the bottom of the conveyor belt bracket 3 is fixedly connected to the top of the bracket 2, the conveyor belt unit 6 and the conveyor belt power motor 11 are both installed on the conveyor belt bracket 3, and the conveyor belt power motor 11 is used to drive the conveyor belt unit 6 to work, the crushing unit 5 is arranged just above the head end of the conveyor belt unit 6, and the crushing unit 5 is installed on the conveyor belt unit 6 through the crushing unit bracket 4. On the conveyor bracket 3, the lower hopper 7 is arranged obliquely below the tail end of the conveyor belt unit 6, and the lower hopper 7 is installed on the conveyor belt bracket 3, and the screening drum unit 8 is inserted on the discharge end of the lower hopper 7 in a downward inclined direction, and the feed end of the screening drum unit 8 is rotatably connected to the discharge end of the lower hopper 7 through a bearing, and the discharge end of the screening drum unit 8 is installed on the bottom support plate 1 through the bottom end bracket 10, and the screening drum power motor 12 is installed on the bracket 2, and the screening drum power motor 12 is used to drive the screening drum unit 8 to rotate.

[0032] The present embodiment provides a milling material crushing and screening device, which effectively combines a roller crusher with a drum screening structure. When combining the two, it is taken into account that the feed end of the drum screening structure is relatively small. When the crushed material is transferred to the drum screening structure, the large-mouth discharge end and the small-mouth feed end cooperate with each other, which easily causes the material to scatter, greatly reducing the accuracy of the feed. Therefore, the present application introduces a lower hopper and a conveyor belt structure, and through a multi-layer bracket structure, the positional relationship between the two is reasonably configured, so that the crushed material can be accurately put into the drum screening structure for screening, which greatly improves the accuracy of the material input and provides a great guarantee for the working continuity of the milling material crushing process and the screening process.

[0033] Specific implementation method 2: Combination Figures 1 to 9 This embodiment is described. This embodiment differs from the first embodiment in that a motor mounting base 21 is provided on the end of the bracket 2 adjacent to the screening drum unit 8. The screening drum power motor 12 is mounted on the motor mounting base 21, and the axis of the power output shaft of the screening drum power motor 12 is arranged parallel to the axis of the screening drum unit 8. Other components and connection methods are the same as those of the first embodiment.

[0034] In this arrangement, the screening drum power motor 12 is fixed by the motor mounting seat 21. Considering that the screening drum power motor 12 and the screening drum unit 8 are driven by belt transmission, in order to ensure the accuracy and stability of the belt transmission, it is necessary to ensure that the axis of the output shaft in the screening drum power motor 12 is parallel to the axis of the screening drum unit 8. The screening drum unit 8 is set to be tilted downward, so the screening drum power motor 12 also needs to be installed tilted. The motor mounting seat 21 can adapt to the installation angle of the screening drum power motor 12 and improve the installation stability of the screening drum power motor 12.

[0035] Specific implementation three: combination Figures 1 to 9 In this embodiment, the motor support plate 31 is used to support the conveyor belt power motor 11, the power output shaft of the conveyor belt power motor 11 is connected with the conveying roller at the head end of the conveyor belt unit 6 through a belt drive, the driving pulley in the belt drive structure is sleeved on the power output shaft of the conveyor belt power motor 11, the driven pulley in the belt drive structure is installed on the conveying roller at the head end of the conveyor belt unit 6, and the output torque of the conveyor belt power motor 11 is transmitted to the conveying roller at the head end of the conveyor belt unit 6 through the belt drive to drive the work of the conveyor belt unit 6, and the discharge bin support 32 is used to support the discharge bin 7 to ensure the working stability of the discharge bin 7.

[0036] In this embodiment, the motor support plate 31 is used to support the conveyor belt power motor 11, the power output shaft of the conveyor belt power motor 11 is connected with the conveying roller at the head end of the conveyor belt unit 6 through a belt drive, the driving pulley in the belt drive structure is sleeved on the power output shaft of the conveyor belt power motor 11, the driven pulley in the belt drive structure is installed on the conveying roller at the head end of the conveyor belt unit 6, and the output torque of the conveyor belt power motor 11 is transmitted to the conveying roller at the head end of the conveyor belt unit 6 through the belt drive to drive the work of the conveyor belt unit 6, and the discharge bin support 32 is used to support the discharge bin 7 to ensure the working stability of the discharge bin 7.

[0037] Specific implementation four: combination Figures 1 to 9 In this embodiment, the motor support plate 31 is used to support the conveyor belt power motor 11, the power output shaft of the conveyor belt power motor 11 is connected with the conveying roller at the head end of the conveyor belt unit 6 through a belt drive, the driving pulley in the belt drive structure is sleeved on the power output shaft of the conveyor belt power motor 11, the driven pulley in the belt drive structure is installed on the conveying roller at the head end of the conveyor belt unit 6, and the output torque of the conveyor belt power motor 11 is transmitted to the conveying roller at the head end of the conveyor belt unit 6 through the belt drive to drive the work of the conveyor belt unit 6, and the discharge bin support 32 is used to support the discharge bin 7 to ensure the working stability of the discharge bin 7.

[0038] In this embodiment, the milling material is crushed by providing shearing force through the relative rotation of the forward crushing roller 55 and the reverse crushing roller 56, the forward crushing roller 55 and the reverse crushing roller 56 are respectively driven by a driving motor 53, and the transmission assembly 54 between each crushing roller and the driving motor 53 is a belt transmission structure, and the two driving motors 53 are opposite in direction when working, so as to ensure that the forward crushing roller 55 and the reverse crushing roller 56 can realize the relative rotation.

[0039] Specific embodiment five: combined Figures 1 to 9 In this embodiment, the difference between this embodiment and the specific embodiment four is that the crushing chamber 51 includes a guide chamber section 511, a working chamber section 512 and an exhaust chamber section 513, which are sequentially arranged from top to bottom, the guide chamber section 511 and the exhaust chamber section 513 are both prismatic chamber sections, and the working chamber section 512 is a rectangular chamber section, the large end of the guide chamber section 511 is the material inlet end, the small end of the guide chamber section 511 is the material outlet end, the large end of the exhaust chamber section 513 is the material inlet end, the small end of the guide chamber section 511 is the material outlet end, the material outlet end of the guide chamber section 511 and the material inlet end of the working chamber section 512 are in communication, the material outlet end of the working chamber section 512 and the material inlet end of the exhaust chamber section 513 are in communication, the forward crushing roller 55 and the reverse crushing roller 56 are arranged in parallel in the working chamber section 512, and the forward crushing roller 55 and the reverse crushing roller 56 are both rotationally connected with the chamber wall of the working chamber section 512, the two motor chambers 52 are arranged on the two sides of the working chamber section 512, and each motor chamber 52 is fixedly connected with the working chamber section 512. The other components and connection modes are the same as those of the specific embodiment four.

[0040] In this embodiment, the guide chamber section 511 is used for guiding the material into the crushing chamber 51, the guide chamber section 511 is designed as a wide mouth to improve the accuracy of feeding the milling material, the working chamber section 512 is the working area for crushing the milling material, and the exhaust chamber section 513 is designed as a narrow mouth to ensure that the crushed milling material can be accurately fed onto the conveying belt unit 6.

[0041] Specific embodiment six: combined Figures 1 to 9The difference between the embodiment and the fifth specific embodiment is that the forward crushing roller 55 comprises a forward shaft, two forward end pressure discs, N forward interval discs and N+1 forward crushing discs 57. The forward shaft is arranged in the working bin section 512 and both ends of the forward shaft are rotationally connected with the working bin section 512. The N+1 forward crushing discs 57 are sequentially and equidistantly sleeved on the forward shaft along the length extension direction of the forward shaft. One forward crushing disc 57 is arranged between every two adjacent forward interval discs. The N forward interval discs are sleeved on the forward shaft. The two forward end pressure discs are arranged outside the two forward crushing discs 57 at the ends and are sleeved on the forward shaft. The other components and connection modes are the same as those in the fifth specific embodiment.

[0042] The seventh specific embodiment is combined with the sixth specific embodiment. Figures 1 to 9 The difference between the embodiment and the sixth specific embodiment is that the reverse crushing roller 56 comprises a reverse shaft, two reverse end pressure discs, N reverse crushing discs 58 and N+1 reverse interval discs. The reverse shaft is arranged in the working bin section 512 and both ends of the reverse shaft are rotationally connected with the working bin section 512. The N+1 reverse interval discs are sequentially and equidistantly sleeved on the reverse shaft along the length extension direction of the reverse shaft. One reverse crushing disc 58 is arranged between every two adjacent reverse interval discs. The N reverse crushing discs 58 are sleeved on the reverse shaft. The two reverse end pressure discs are arranged outside the two reverse interval discs at the ends and are sleeved on the reverse shaft. The other components and connection modes are the same as those in the sixth specific embodiment.

[0043] The difference between the embodiment and the sixth specific embodiment is that the reverse crushing roller 56 comprises a reverse shaft, two reverse end pressure discs, N reverse crushing discs 58 and N+1 reverse interval discs. The reverse shaft is arranged in the working bin section 512 and both ends of the reverse shaft are rotationally connected with the working bin section 512. The N+1 reverse interval discs are sequentially and equidistantly sleeved on the reverse shaft along the length extension direction of the reverse shaft. One reverse crushing disc 58 is arranged between every two adjacent reverse interval discs. The N reverse crushing discs 58 are sleeved on the reverse shaft. The two reverse end pressure discs are arranged outside the two reverse interval discs at the ends and are sleeved on the reverse shaft. The other components and connection modes are the same as those in the sixth specific embodiment.

[0044] The eighth specific embodiment is combined with the sixth specific embodiment and the seventh specific embodiment. Figures 1 to 9The embodiment is different from the seventh embodiment in that the driven pulley 13 is sleeved on the feed end of the screen cylinder unit 8, the driving pulley 15 is sleeved on the power output shaft of the screen cylinder power motor 12, and the driven pulley 13 and the driving pulley 15 are drivingly connected through the belt 14. The other components and connection modes are the same as those of the seventh embodiment.

[0045] The ninth embodiment is combined with the eighth embodiment. Figures 1 to 9 The embodiment is different from the eighth embodiment in that the screen cylinder unit 8 includes the feed end connecting cylinder segment 81, the discharge end screen cylinder segment 82, M screen cylinder segments 83, and M+1 connecting rings 84. The M screen cylinder segments 83 are sequentially arranged along the length extension direction of the screen cylinder unit 8 to form the screening area, and two adjacent screen cylinder segments 83 in the screening area are connected through one connecting ring 84. The screen cylinder segment 83 at the head end of the screening area is connected to one end of the feed end connecting cylinder segment 81 through one connecting ring 84, and the other end of the feed end connecting cylinder segment 81 is inserted into the discharge end of the discharge bin 7 and is rotatably connected to the discharge end of the discharge bin 7 through a bearing. The screen cylinder segment 83 at the tail end of the screening area is connected to one end of the discharge end screen cylinder segment 82 through one connecting ring 84, and the discharge end screen cylinder segment 82 is installed on the bottom supporting plate 1 through the bottom end bracket 10.

[0046] The other end of the discharge end screen cylinder segment 82 is provided with the discharge guide shovel 85, and the discharge guide shovel 85 is integrally formed with the discharge end screen cylinder segment 82.

[0047] The inside of the screening area is provided with the spiral guide rubber belt 86 extending from the head end to the tail end, and the spiral guide rubber belt 86 is adhesively fixed to the inner wall of the screening area. The other components and connection modes are the same as those of the eighth embodiment.

[0048] In the embodiment, the screen hole size of each screen drum section 83 in the M screen drum sections 83 can be the same or different, and can be designed by the user according to actual screening needs. The inlet end connecting drum section 81 is rotatably connected to the end of the discharge bin 7 through a bearing, so that the inlet end connecting drum section 81 can drive the material to be screened to rotate and convey. Since the screen drum unit 8 is inclined, under the combined action of the gravity of the material and the rotating force of the screen drum, the crushed material is always in contact with the screen drum wall and discharged to the outside of the screening area through the screen hole. The outlet end screen drum section 82 is installed on the bottom support plate 1 through the bottom bracket 10, and is rotatably connected between the outlet end screen drum section 82 and the bottom bracket 10 through a bearing. The end of the outlet end screen drum section 82 is provided with a discharge guide shovel 85 for guiding the discharge of large pieces of material. The spiral guide rubber belt 86 on the inner wall of the screening area is used to guide the movement of the crushed material, provide trajectory guidance for the crushed material during the screening process, and can also limit the movement speed of the material to ensure stable screening of the material.

[0049] Specific implementation method ten: Figures 1 to 9 In this embodiment, the difference between this embodiment and specific implementation method nine is that a material falling guide bin 9 is arranged below the screening area. The material falling guide bin 9 is installed on the bottom support plate 1 through a support. The inlet end of the material falling guide bin 9 is arranged corresponding to the screening area, and the outlet end of the material falling guide bin 9 is arranged towards the bottom support plate 1. The other components and connection modes are the same as those of specific implementation method nine.

[0050] In this embodiment, the material falling guide bin 9 is used to collect the material screened out of the screening area and guide it to a fixed material collection point. If the screening area includes a plurality of screen drum sections 83 with different hole diameters, a partition is arranged in the material falling guide bin 9, and the material falling guide bin 9 is divided into a plurality of material falling areas through the partition. Each material falling area is arranged corresponding to a screen drum section 83, and the material screened out of the corresponding screen drum section 83 is guided into the fixed material collection point.

[0051] The above has been disclosed in the preferred embodiment of the present application, but is not intended to limit the present application. Any person skilled in the art can make some changes or modifications to the above disclosed structure and technical content without departing from the technical solution range of the present application, and equivalent embodiments can be obtained. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present application shall still fall within the technical solution range of the present application.

[0052] Working principle

[0053] The application is used to first assemble various components according to the connecting relationship described in the first embodiment to the tenth embodiment, first, the milling material is conveyed from a low place to the crushing unit 5 located at a high place by a conveying screw or a conveying belt, the milling material enters the crushing unit 5 from the guide bin section 511, at this time, two drive motors 53 are started, the two drive motors 53 drive the forward crushing roller 55 and the reverse crushing roller 56 to rotate respectively, and the material is crushed in the process of the forward crushing roller 55 and the reverse crushing roller 56 rotating towards each other, the crushed material is discharged along the discharge bin section 513 and falls on the conveying belt unit 6, the conveying belt unit 6 drives the crushed material to move to the discharge bin 7, and along the discharge bin 7 to the screening drum unit 8, at this time, the screening drum power motor 12 rotates, drives the screening drum unit 8 to rotate through the transmission mechanism composed of the driven pulley 13, the belt 14 and the driving pulley 15, with the rotation of the screening drum unit 8, the material moves from the head end of the screening drum unit 8 to the tail end of the screening drum unit 8 under the action of gravity and the constraint of the spiral guide rubber belt 86, in the movement, the material passes through the screening area in the screening drum unit 8, the small size material is discharged from the screening hole in the screening area, and the large size material is discharged from the discharge guide shovel 85 at the end of the discharge end screening drum section 82, to realize the screening effect, in order to facilitate the collection of the screened material, a conveying belt can be arranged below the discharge end of the material falling guide bin 9 and the discharge end of the discharge guide shovel 85, and the screened material is directly transported to the designated area for collection through the conveying belt.

Claims

1. A milling material crushing and screening device, characterized by: The crushing and screening device comprises a bottom supporting plate (1), a support (2), a conveying belt bracket (3), a crushing unit support (4), a crushing unit (5), a conveying belt unit (6), a discharging bin (7), a screening drum unit (8), a bottom end bracket (10), a conveying belt power motor (11) and a screening drum power motor (12). The support (2) is arranged on the top of the bottom supporting plate (1), and the bottom of the support (2) is fixedly connected with the top of the bottom supporting plate (1). The conveying belt bracket (3) is arranged on the top of the support (2), and the bottom of the conveying belt bracket (3) is fixedly connected with the top of the support (2). The conveying belt unit (6) and the conveying belt power motor (11) are both installed on the conveying belt bracket (3), and the conveying belt power motor (11) is used to drive the conveying belt unit (6) to work. The crushing unit (5) is arranged directly above the head end of the conveying belt unit (6), and the crushing unit (5) is installed on the conveying belt bracket (3) through the crushing unit support (4). The discharging bin (7) is arranged obliquely below the tail end of the conveying belt unit (6), and the discharging bin (7) is installed on the conveying belt bracket (3). The screening drum unit (8) is inserted on the discharging end of the discharging bin (7) in a downwardly inclined direction, and the feeding end of the screening drum unit (8) is rotatably connected with the discharging end of the discharging bin (7) through a bearing. The discharging end of the screening drum unit (8) is installed on the bottom supporting plate (1) through the bottom end bracket (10). The screening drum power motor (12) is installed on the support (2), and the screening drum power motor (12) is used to drive the screening drum unit (8) to rotate.

2. A milling and screening apparatus according to claim 1, wherein: The support (2) is provided with a motor mounting seat (21) on one end close to the screening drum unit (8). The screening drum power motor (12) is installed on the motor mounting seat (21), and the axis of the power output shaft in the screening drum power motor (12) is arranged in parallel with the axis of the screening drum unit (8).

3. A milling and screening apparatus according to claim 2, wherein: The conveying belt bracket (3) is provided with a motor supporting plate (31) and a discharging bin bracket (32). The motor supporting plate (31) is arranged close to the head end of the conveying belt unit (6), and the conveying belt power motor (11) is installed on the motor supporting plate (31). The discharging bin bracket (32) is arranged close to the tail end of the conveying belt unit (6), and the discharging bin (7) is installed on the discharging bin bracket (32).

4. A milling and screening apparatus according to claim 3, wherein: The crushing unit (5) comprises a crushing chamber (51), a forward crushing roller (55), a reverse crushing roller (56), two motor chambers (52), two driving motors (53) and two transmission assemblies (54), the crushing chamber (51) is arranged directly above the front end of the conveying belt unit (6), and the crushing chamber (51) is arranged on the top of the conveying belt bracket (3) through the crushing unit support (4); the two motor chambers (52) are oppositely arranged on the two sides of the crushing chamber (51), and each motor chamber (52) is fixedly connected with the crushing chamber (51); one driving motor (53) is arranged in each motor chamber (52), and the motor shell of each driving motor (53) is fixedly connected with the inner wall of the motor chamber (52) through a motor mounting seat; the power output shaft of each driving motor (53) extends to the outside of the motor chamber (52); the forward crushing roller (55) and the reverse crushing roller (56) are oppositely arranged in parallel in the crushing chamber (51), and the forward crushing roller (55) and the reverse crushing roller (56) are arranged in cooperation; the forward crushing roller (55) and the reverse crushing roller (56) are rotatably connected with the chamber wall of the crushing chamber (51); one end of the forward crushing roller (55) extends to the outside of the crushing chamber (51) and is in transmission connection with the power output shaft of one driving motor (53) through one transmission assembly (54); one end of the reverse crushing roller (56) extends to the outside of the crushing chamber (51) and is in transmission connection with the power output shaft of the other driving motor (53) through the other transmission assembly (54); and the rotating direction of the forward crushing roller (55) is opposite to that of the reverse crushing roller (56).

5. A milling and screening apparatus according to claim 4, wherein: The crushing chamber (51) comprises a guide chamber section (511), a working chamber section (512) and a discharge chamber section (513), the guide chamber section (511), the working chamber section (512) and the discharge chamber section (513) are sequentially arranged from top to bottom, the guide chamber section (511) and the discharge chamber section (513) are prismatic sections, the working chamber section (512) is a rectangular section, the large end of the guide chamber section (511) is a feeding end, the small end of the guide chamber section (511) is a discharging end, the large end of the discharge chamber section (513) is a feeding end, the small end of the guide chamber section (511) is a discharging end, the discharging end of the guide chamber section (511) is in communication with the feeding end of the working chamber section (512), the discharging end of the working chamber section (512) is in communication with the feeding end of the discharge chamber section (513), the forward crushing roller (55) and the reverse crushing roller (56) are oppositely arranged in parallel in the working chamber section (512), and the forward crushing roller (55) and the reverse crushing roller (56) are rotatably connected with the chamber wall of the working chamber section (512); the two motor chambers (52) are oppositely arranged on the two sides of the working chamber section (512), and each motor chamber (52) is fixedly connected with the working chamber section (512).

6. A milling and screening apparatus according to claim 5, wherein: The forward crushing roller (55) comprises a forward shaft, two forward end pressure discs, N forward interval discs and N+1 forward crushing discs (57), the forward shaft is arranged in the working bin section (512), both ends of the forward shaft are rotationally connected with the working bin section (512), N+1 forward crushing discs (57) are sequentially and equidistantly sleeved on the forward shaft along the length extension direction of the forward shaft, one forward crushing disc (57) is arranged between adjacent two forward crushing discs (57), and N forward interval discs are sleeved on the forward shaft, the two forward end pressure discs are arranged outside the two forward crushing discs (57) at the end, and the two forward end pressure discs are sleeved on the forward shaft.

7. A milling and screening apparatus according to claim 6, wherein: The reverse crushing roller (56) comprises a reverse shaft, two reverse end pressure discs, N reverse crushing discs (58) and N+1 reverse interval discs, the reverse shaft is arranged in the working bin section (512), both ends of the reverse shaft are rotationally connected with the working bin section (512), N+1 reverse interval discs are sequentially and equidistantly sleeved on the reverse shaft along the length extension direction of the reverse shaft, one reverse crushing disc (58) is arranged between adjacent two reverse interval discs, and N reverse crushing discs (58) are sleeved on the reverse shaft, the two reverse end pressure discs are arranged outside the two reverse interval discs at the end, and the two reverse end pressure discs are sleeved on the reverse shaft.

8. A milling and screening apparatus according to claim 7, wherein: The driven pulley (13) is sleeved on the feed end of the screening drum unit (8), the driving pulley (15) is sleeved on the power output shaft of the screening drum power motor (12), and the driven pulley (13) and the driving pulley (15) are transmissionally connected through the belt (14).

9. A milling and screening apparatus according to claim 8, wherein: The screening drum unit (8) comprises an inlet end connecting drum section (81), an outlet end screening drum section (82), M screening drum sections (83) and M+1 connecting rings (84), the M screening drum sections (83) are sequentially arranged along the length extension direction of the screening drum unit (8) to form a screening area, adjacent two screening drum sections (83) in the screening area are connected through a connecting ring (84), the screening drum section (83) at the first end of the screening area is connected with one end of the inlet end connecting drum section (81) through a connecting ring (84), the other end of the inlet end connecting drum section (81) is inserted on the outlet end of the discharge bin (7), and the other end of the inlet end connecting drum section (81) is rotationally connected with the outlet end of the discharge bin (7) through a bearing, the screening drum section (83) at the end of the screening area is connected with one end of the outlet end screening drum section (82) through a connecting ring (84), and the outlet end screening drum section (82) is installed on the bottom supporting plate (1) through the bottom bracket (10); The outlet end screening drum section (82) is provided with an outlet guide shovel (85) on the other end, and the outlet guide shovel (85) is integrally formed with the outlet end screening drum section (82); The inside of the screening area is provided with a spiral guide rubber belt (86) extending from the first end to the tail end, and the spiral guide rubber belt (86) is adhesively fixed with the inner wall of the screening area.

10. A milling and screening apparatus according to claim 9, wherein: The screening area is provided below with a blanking guide bin (9), the blanking guide bin (9) is installed on the bottom supporting plate (1) through a support, the blanking guide bin (9) is provided at the feeding end corresponding to the screening area, and the blanking guide bin (9) is provided at the discharging end towards the bottom supporting plate (1).

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