A vertical crushing device

Abstract

The invention discloses a vertical pulverizing device, which belongs to the technical field of pulverizing equipment, and comprises a pulverizing body, a pulverizing mechanism arranged at the upper part of the pulverizing body, and a screen arranged at the lower part of the pulverizing body, wherein the pulverizing mechanism comprises a pulverizing barrel, a pulverizing knife group rotatably installed in the inner cavity of the pulverizing barrel, and a driving member for driving the pulverizing knife group to rotate, the screen is semicircular, and a scraper adapted to the screen is rotatably installed on the outer wall of the pulverizing barrel, the scraper has a feeding angle corresponding to the upper part of the pulverizing barrel, and a material blocking component for blocking the material is installed on the scraper; in the vertical pulverizing device provided by the invention, the scraper arranged can send large particle materials back into the pulverizing barrel, so that the large particle materials can be pulverized twice to meet the production requirements, and the material blocking component can prevent the materials from leaking out from the side of the scraper close to its rotation axis in advance, thereby improving the efficiency of conveying the large particle materials on the screen into the pulverizing barrel.

Description

Technical Field

[0001] The invention relates to the technical field of pulverizing equipment, and in particular to a vertical pulverizing device. Background Art

[0002] A pulverizer is a machine that crushes large solid raw materials into required sizes. In the industrial production process, the pulverizer plays an important role.

[0003] For example, the patent with announcement number CN114367364B, with announcement date of 2023-01-17, discloses a multiple-crushing vertical mill, which belongs to the technical field of mills, including a crushing box, a forming box, a support seat and a control box. The crushing box is arranged on the top of the forming box, and the support seat is installed on the bottom of the forming box by bolts. A circulating crushing mechanism, a feeding control mechanism and a discharging control component are arranged in the crushing box. A forming mechanism is arranged in the forming box. The circulating crushing mechanism includes a crushing component and a circulating component. The crushing component includes a crushing barrel, a static knife group, a moving knife group, a rotating rod and a driving motor. A limited feeding rack is welded on the top of the inner wall of the crushing box, and the limited feeding rack is connected to the powder A feeding chamber is arranged between the inner walls of the crushing box, a feeding port is arranged on the top of the feeding chamber, a mounting port is arranged on the bottom of the limit feeding frame, a crushing cylinder is installed in the mounting port by bolts, a driving motor is installed on the top of the crushing box, a rotating rod is installed on the output shaft of the driving motor, a circulation component comprises a motor, a rotating roller, a sleeve and a scraper, the motor is connected to the switch group by electric wires, the motor is installed on the front side of the crushing box by bolts, the rotating roller is arranged in a semicircular groove, the rotating roller is installed on the output shaft of the motor, the sleeve is installed on the rotating roller by bolts, the scraper is welded on one side of the sleeve, and the length of the scraper is the same as the diameter of the semicircular groove. The invention has the characteristics of good crushing effect and neat material discharge.

[0004] The disadvantage of the existing vertical crushers including the above-mentioned patent is that a rotating scraper is used to scrape the large particles in the semicircular groove into the crushing drum. Since the rotation angle of the scraper is too large, when rotating from the horizontal direction to the final angle, the material will slide down from the side of the baffle close to its rotation axis in advance, resulting in that the large particles scraped by the scraper can only be partially delivered to the feeding port of the crushing drum, thereby affecting the efficiency of the secondary crushing. Summary of the invention

[0005] The object of the present invention is to provide a vertical crushing device which can crush materials thoroughly.

[0006] In order to achieve the above object, the present invention provides the following technical solutions:

[0007] A vertical crushing device comprises a crushing machine body, a crushing mechanism arranged at the upper part of the crushing machine body and a screen arranged at the lower part of the crushing machine body, the crushing mechanism comprises a crushing cylinder, a crushing knife group rotatably installed in the inner cavity of the crushing cylinder and a driving member for driving the crushing knife group to rotate, the screen is semicircular, a scraper adapted to the screen is rotatably installed on the outer wall of the crushing cylinder, the scraper has a feeding angle corresponding to the upper part of the crushing cylinder, and a material blocking assembly for blocking the material is installed on the scraper, when the scraper is driven to rotate to the feeding angle, the material blocking plate is driven to switch to the discharging state.

[0008] In the above-mentioned pulverizing device, a collecting hopper is installed on the upper part of the pulverizing cylinder, the upper opening of the collecting hopper is rectangular, and the length of the scraper is smaller than the length of the upper opening of the collecting hopper.

[0009] In the above-mentioned crushing device, an upper hopper is installed on the inner upper part of the crushing machine body, the upper opening of the upper hopper is connected to the outside of the crushing machine body, the lower opening of the upper hopper is arranged on the inner side of the gathering hopper, and a feeding channel is left between the outer wall of the upper hopper and the inner wall of the gathering hopper.

[0010] In the above-mentioned crushing device, connecting rods are rotatably installed on the front and rear sides of the crushing cylinder, the front and rear sides of the scraper are respectively connected to the corresponding connecting rods, and the material baffle assembly includes a material baffle plate, which is rotatably connected to the scraper. When the scraper is at the feeding angle, the material baffle plate is driven to rotate until it contacts the inner wall of the upper opening of the material collection port.

[0011] The above-mentioned crushing device, the material baffle assembly also includes a fan-shaped shell fixedly connected to the material baffle plate, the center of the fan-shaped surface of the fan-shaped shell is located on the rotation axis of the material baffle plate, and the scraper is provided with an arc groove that matches the arc surface of the fan-shaped shell. When the scraper is driven to rotate, one surface of the fan-shaped shell is flush with the surface of the scraper used for feeding.

[0012] In the above-mentioned pulverizing device, the front side and the rear side of the scraper are rotatably connected to the corresponding connecting rods.

[0013] In the above-mentioned pulverizing device, the ends of the two groups of connecting rods are fixedly connected to the limit plates, and the plane where the limit plates are located is arranged along the length direction of the connecting rods. When the scraper is driven to rotate, the limit plates support the scraper.

[0014] In the above-mentioned crushing device, the scraper includes a guide plate and an arc plate. The guide plate is rotatably connected to the connecting rod. The arc plate is fixed to the side of the guide plate away from the connecting rod, and the arc plate is tightly attached to the inner wall of the screen. When the scraper is driven to rotate toward the feeding angle, the arc plate scrapes off the material on the inner wall of the screen.

[0015] In the above-mentioned pulverizing device, the front and rear sides of the material guide plate and the arc plate are fixedly connected with side baffles, and the side baffles protrude from the material guide plate and the arc plate for the side arrangement of material guide.

[0016] In the above-mentioned pulverizing device, the mesh openings of the screen are all opened along the radial direction thereof.

[0017] In the above technical scheme, the vertical crushing device provided by the present invention has a scraper that can send the large particle material back into the crushing barrel from the upper opening of the crushing barrel, so that the large particle material can be crushed for the second time to meet the production requirements, and the material blocking assembly arranged on the scraper can prevent the material from leaking out of the side of the scraper close to its rotation axis in advance, thereby improving the efficiency of conveying the large particle material on the screen into the crushing barrel and avoiding excessive accumulation of large particle material on the screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0019] Figure 1 A partial cross-sectional view of a pulverizer body provided by an embodiment of the present invention;

[0020] Figure 2 A partial cross-sectional view of a pulverizing mechanism provided in an embodiment of the present invention;

[0021] Figure 3 A top view of a pulverizing cylinder provided in an embodiment of the present invention;

[0022] Figure 4 A top view of the scraper when the baffle plate provided in the embodiment of the present invention is in a feeding state;

[0023] Figure 5 A schematic diagram of the structure of a scraper when the material blocking plate provided by an embodiment of the present invention is in a material blocking state;

[0024] Figure 6 A front view of a scraper when the material blocking plate provided in an embodiment of the present invention is in a material blocking state;

[0025] Figure 7 A cross-sectional view of a scraper when the material blocking plate provided in an embodiment of the present invention is in a material blocking state;

[0026] Figure 8 A schematic structural diagram of a scraper when the baffle plate provided in an embodiment of the present invention is in a feeding state.

[0027] Description of reference numerals:

[0028] 1. Crushing machine body; 11. Feeding hopper; 12. Feeding channel; 2. Crushing mechanism; 21. Crushing barrel; 22. Crushing knife group; 23. Gathering hopper; 24. Driving shaft; 25. First motor; 3. Screen; 4. Scraper; 401. Guide plate; 402. Arc plate; 403. Side baffle plate; 404. Support plate; 405. Through slot; 41. Second motor; 42. Connecting rod; 421. Limiting plate; 43. Third motor; 5. Baffle assembly; 51. Baffle plate; 52. First rotating shaft; 53. Fan-shaped shell; 54. Second rotating shaft; 55. Fourth motor. DETAILED DESCRIPTION

[0029] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0030] In the description of the present invention, unless otherwise specified, "multiple" means two or more than two; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] like Figure 1-Figure 8 As shown, a vertical crushing device provided by an embodiment of the present invention comprises a crushing body 1, a crushing mechanism 2 arranged at the upper inner part of the crushing body 1, and a screen 3 arranged at the lower inner part of the crushing body 1, the crushing mechanism 2 comprises a crushing barrel 21, a crushing knife group 22 rotatably installed in the inner cavity of the crushing barrel 21, and a driving member for driving the crushing knife group 22 to rotate, the screen 3 is semicircular, and a scraper 4 adapted to the screen 3 is rotatably installed on the outer wall of the crushing barrel 21, the scraper 4 has a feeding angle corresponding to the upper part of the crushing barrel 21, and a material blocking assembly 5 for blocking the material is installed on the scraper 4, when the scraper 4 is driven to rotate to the feeding angle, the material blocking plate 51 is driven to switch to the discharging state.

[0032] Specifically, the pulverizing machine body 1 is the main part of the pulverizing device, and a pulverizing mechanism 2 and a screen 3 are arranged in the pulverizing machine body 1. Figure 1As shown, the pulverizing mechanism 2 includes a pulverizing barrel 21 vertically mounted on the upper part of the pulverizing machine body 1. The pulverizing barrel 21 is cylindrical with its central axis vertically arranged, and a cylindrical pulverizing chamber is arranged inside the pulverizing chamber. A driving shaft 24 is vertically mounted in the pulverizing chamber, and a plurality of groups of pulverizing knife groups 22 are arranged at equal intervals along the axial direction of the driving shaft 24. The upper end of the driving shaft 24 passes through the upper part of the pulverizing machine body 1. A driving member for driving the driving shaft 24 to rotate is installed on the top of the pulverizing machine body 1. Optionally, the driving member is a first motor 25 fixedly mounted on the top of the pulverizing machine body 1, and the output shaft of the first motor 25 is drivingly connected to the driving shaft 24.

[0033] A collecting hopper 23 is installed on the upper part of the crushing cylinder 21. The upper opening of the collecting hopper 23 is rectangular, and the length of the upper opening of the collecting hopper 23 is greater than the length of the scraper 4. Figure 1 In the view, the length direction of the scraper 4 is parallel to the direction of its rotation axis, so that the material on the scraper 4 can slide into the hopper 23 as much as possible. The outer wall of the crushing cylinder 21 is rotatably connected to a mounting frame, and the scraper 4 is connected to the mounting frame. A mounting frame is provided at each end of the length of the scraper 4. The outer wall of the crushing cylinder 21 is fixedly connected to a second motor 41, and the output shaft of the second motor 41 is fixedly connected to one of the mounting frames to drive the mounting frame and the scraper 4 to rotate. In this way, the scraper 4 can revolve around the output shaft, and its revolution stroke basically wraps the periphery of the middle and lower part of the crushing mechanism 2. For the convenience of description, Figure 1 In the view, the side of the scraper 4 that is tilted upward is the front side, and the other side is the back side. In the rotational stroke of the scraper 4, the scraper 4 has an angle that fits with the edge of the upper opening of the hopper 23, referred to as the fitting angle, which is not shown in the figure. At this angle, the plane where the front side of the scraper 4 is located is on the inner side of the upper opening of the hopper 23. In the rotational stroke of the scraper 4, there is also a feeding angle, and the fitting angle and the feeding angle are both Figure 1 The horizontal direction is taken as the reference, and the feeding angle is consistent with or greater than the above-mentioned fitting angle. In this way, when the scraper 4 is at the feeding angle, the material on the scraper 4 can slide down along the front of the scraper 4 under the action of its own gravity to the upper opening of the collecting hopper 23, and the lower opening of the collecting hopper 23 is circular and matched with the upper opening of the crushing cylinder 21, so that the material in the collecting hopper 23 can naturally slide into the crushing cylinder 21 for crushing, and the screen 3 is semicircular and arranged directly below the crushing cylinder 21. The center point of the screen 3 is on the rotation axis of the scraper 4 to ensure that the side of the scraper 4 away from its rotation axis can fit with the inner wall of the screen 3. When the scraper 4 is driven to rotate, the large particles retained on the screen 3 can be scraped to the above-mentioned feeding angle and fed.

[0034] In order to enable the scraper 4 to smoothly rotate to the above-mentioned fitting angle so as to realize the function of conveying large-particle materials into the collecting hopper 23, during the rotation of the scraper 4, the crushing barrel 21 cannot affect the rotation of the scraper 4, and thus the radial dimension of the scraper 4 along the screen 3 is limited by the body of the crushing barrel 21, which results in a certain space being reserved between the scraper 4 and its rotation axis to avoid the body of the crushing barrel 21. When the scraper 4 rotates, its inclination angle keeps changing. When the scraper 4 rotates from a horizontal state to the above-mentioned feeding angle, the side close to the crushing barrel 21 will gradually tilt downward, which will cause the large-particle materials on the scraper 4 to slide down from the side of the scraper 4 close to the crushing barrel 21 due to its own gravity before the scraper 4 reaches the above-mentioned fitting angle, and fall onto the screen 3 again through the above-mentioned space. In order to avoid this situation, In this embodiment, a material blocking component 5 is provided on the scraper 4. Optionally, the material blocking component 5 is a rectangular plate mounted on the scraper 4 and capable of rotating synchronously with the scraper 4, and a driving mechanism such as an electric push rod for driving the plate to separate from the scraper 4. The length of the plate is equal to the length of the scraper 4. The electric push rod is fixedly mounted on the scraper 4, and the output end of the electric push rod is fixedly connected to the plate. The plate has a certain angle with the scraper 4 and one long side contacts the front of the scraper 4 to prevent the material on the scraper 4 from sliding down along the front of the scraper 4, and the electric push rod is arranged along the width direction of the plate. When the scraper 4 rotates to the feeding angle, the electric push rod extends to drive the long side of the plate to separate from the scraper 4, so that a channel is opened between the plate and the scraper 4, and the material slides from the channel to the upper opening of the collecting hopper 23 under the action of its own gravity.

[0035] The vertical crushing device provided by the present invention has a scraper 4 that can send large particle materials back into the crushing cylinder 21 through the upper opening of the crushing cylinder 21, so that the large particle materials can be crushed for the second time to meet the production requirements, and the material blocking assembly 5 arranged on the scraper 4 can prevent the material from leaking out of the side of the scraper 4 close to its rotation axis in advance, thereby improving the efficiency of conveying large particle materials on the screen 3 into the crushing cylinder 21 and avoiding excessive accumulation of large particle materials on the screen 3.

[0036] Furthermore, an upper hopper 11 is installed in the upper part of the crushing machine body 1, the upper opening of the upper hopper 11 is connected to the outside of the crushing machine body 1, the lower opening of the upper hopper 11 is arranged on the inner side of the collecting hopper 23, and a feeding channel 12 is left between the outer wall of the upper hopper 11 and the inner wall of the collecting hopper 23.

[0037] Specifically, in order to realize automated production, in the embodiment itself, an upper hopper 11 is installed on the upper part of the crushing machine body 1, and the upper hopper 11 is installed above the gathering hopper 23. The upper hopper 11 has an upper opening and a lower opening. The upper opening of the upper hopper 11 is connected to the top of the crushing machine body 1. During implementation, the end of the conveyor for conveying materials can be made to correspond to the upper opening of the upper hopper 11 to realize automated loading, and the lower opening of the upper hopper 11 is arranged on the inner side of the gathering hopper 23, and a feeding channel 12 is left between the lower part of the upper hopper 11 and the inner wall of the gathering hopper 23. The large particle material that slides from the scraper 4 to the upper opening of the gathering hopper 23 can enter the gathering hopper 23 through the feeding channel 12, and then fall from the gathering hopper 23 into the crushing barrel 21.

[0038] In another embodiment of the present invention, the front and rear sides of the crushing barrel 21 are rotatably mounted with connecting rods 42 to serve as mounting frames, the front and rear sides of the scraper 4 are respectively connected to the corresponding connecting rods 42, and the material baffle assembly 5 includes a material baffle plate 51, which is rotatably connected to the scraper 4. When the scraper 4 is at a feeding angle, the material baffle plate 51 is driven to rotate until it contacts the inner wall of the upper opening of the material collection port.

[0039] Specifically, in the above embodiment, in order to allow all the large particles on the scraper 4 to be put into the gathering hopper 23, it is necessary to make the scraper 4 and the gathering hopper 23 have a fitting angle. When designing the crushing barrel 21, the gathering hopper 23 and the scraper 4, it is necessary to determine the length of the scraper 4 according to the axial size and radial size of the crushing barrel 21. This leads to higher requirements for the sizes of the crushing barrel 21, the gathering hopper 23 and the scraper 4. In this embodiment, the front and rear sides of the crushing barrel 21 are rotatably connected to the connecting rod 42, and the front and rear sides of the scraper 4 are respectively connected to the corresponding connecting rod 42, so that The scraper 4 can avoid the barrel of the crushing barrel 21 when driven to rotate, and the connecting rod 42 is the mounting frame described in the above embodiment; the material blocking assembly 5 includes a material blocking plate 51, which is the plate member described in the above embodiment, and the material blocking plate 51 is rotatably connected to the side of the scraper 4 close to the crushing barrel 21 through a first rotating shaft 52, and the first rotating shaft 52 is arranged parallel to the rotating axis of the scraper 4. A third motor 43 for driving the material blocking plate 51 to rotate is installed on the scraper 4, and the output end of the third motor 43 is fixedly connected to the first rotating shaft 52. When the material blocking plate 51 rotates on the scraper 4, it has at least one material blocking state and one material discharging state:

[0040] When the baffle plate 51 is in the blocking state, it has a certain angle with the scraper 4, and can block the material sliding down from the scraper 4 close to the inner wall of the screen 3. When the baffle plate 51 is driven to rotate to be parallel to the scraper 4, it switches to the discharge state.

[0041] When the baffle plate 51 is in the discharging state, the side of the baffle plate 51 away from its own rotation axis extends into the inner side of the upper opening of the material collecting hopper 23. Such an arrangement enables the scraper 4 to completely block the gap between the scraper 4 and the upper opening of the material collecting hopper 23 when the scraper 4 does not have the above-mentioned fitting angle, thereby reducing the size requirements of the scraper 4 during design.

[0042] In this embodiment, the baffle plate 51 is rotatably connected to the side of the scraper 4 close to the crushing barrel 21. When the baffle plate 51 is rotated to the above-mentioned material blocking state, it has the function of preventing large particles of material from sliding off the scraper 4. When the baffle plate 51 is rotated to the above-mentioned material discharging state, the scraper 4 can be placed on the inner side of the upper opening of the material collecting hopper 23, blocking the gap between the scraper 4 and the material collecting hopper 23, so that the material can completely slide into the material collecting hopper 23.

[0043] Furthermore, the material baffle assembly 5 also includes a fan-shaped shell 53 fixedly connected to the material baffle plate 51, the center of the fan-shaped surface of the fan-shaped shell 53 is located on the rotation axis of the material baffle plate 51, and an arc groove matching the arc surface of the fan-shaped shell 53 is provided on the scraper 4. When the scraper 4 is driven to rotate, a surface of the fan-shaped shell 53 is flush with the surface of the scraper 4 used for feeding.

[0044] Specifically, since the feeding speed has a great influence on the crushing effect, feeding at a lower speed will result in a lower overall crushing efficiency, while feeding at a higher speed will result in incomplete material crushing, and the crushed material cannot meet the production requirements. In the above embodiment, when the baffle plate 51 is switched from the baffle state to the discharge state, the large particles on the scraper 4 will be put into the gathering hopper 23 at one time, and in this process, the conveyor continues to feed materials into the upper hopper 11. When there are more large particles on the scraper 4, more materials will be fed into the crushing barrel 21 at one time, resulting in complete material crushing, which in turn will cause the scraper 4 to scrape more large particles again during the next round of scraping, thus forming a vicious circle. In the present embodiment, the baffle assembly 5 also includes a fan-shaped shell 53 fixedly connected to the baffle plate 51, such as Figure 5 and Figure 8As shown, the fan-shaped shell 53 is a long plate with a fan-shaped cross-section, and an arc groove matching the arc surface of the fan-shaped shell 53 is opened on the scraper 4. The center of the fan-shaped surface of the fan-shaped shell 53 is on the rotation axis of the baffle plate 51. In the process of synchronous rotation of the fan-shaped shell 53 with the baffle plate 51, its arc surface can always fit with the opening position of the arc groove on the scraper 4. The fan-shaped shell 53 has a first plane, an arc surface and a second plane connected to each other. The first plane is flush with a surface of the baffle plate 51. When the baffle plate 51 is in the baffle state, the second plane is flush with the front face of the scraper 4, the arc surface is tightly attached to the opening position of the arc groove on the scraper 4, and the arc surface protrudes from the back face of the scraper 4. When the baffle plate 51 is in the discharge state, the second plane has an angle with the front face of the scraper 4, and the first plane rotates to be flush with the back face of the scraper 4, and at this time the arc surface protrudes from the front face of the scraper 4.

[0045] With such arrangement, when the baffle plate 51 is in the baffle state, when the scraper plate 4 rotates from the horizontal state to the feeding angle, the material on the scraper plate 4 can slide along the second plane toward the position of the baffle plate 51, and gather at the intersection of the baffle plate 51 and the second plane, and when the baffle plate 51 switches from the baffle state to the discharge state, the large particles on the baffle plate 51 and the fan-shaped shell 53 are put into the gathering hopper 23, and in this process, the arc surface of the fan-shaped shell 53 gradually protrudes from the front side of the scraper plate 4, which can prevent the remaining material on the scraper plate 4 from sliding toward the position of the baffle plate 51;

[0046] After the large-particle materials on the baffle plate 51 and the fan-shaped shell 53 are released, the baffle plate 51 is switched from the discharge state to the baffle state. At this time, the materials blocked by the arc surface can continue to slide downward to the intersection of the baffle plate 51 and the second plane, and then the baffle state is switched to the discharge state again, and the remaining large-particle materials can be released into the collecting hopper 23, so as to realize the batch release of materials on the scraper 4 and avoid adding too much material into the crushing barrel 21 at one time.

[0047] Furthermore, the front side and the rear side of the scraper 4 are rotatably connected to the corresponding connecting rods 42 .

[0048] Specifically, in the above technical scheme, the first feeding is carried out by switching the baffle plate 51 from the baffle state to the discharge state, and then the baffle plate 51 is restored from the discharge state to the baffle state and then switched to the discharge state for the second feeding. Such operation is relatively complicated, and during the switching process, the arc surface of the fan-shaped shell 53 needs to rub against the scraper 4 many times, resulting in serious wear of the arc surface of the fan-shaped shell 53. In order to simplify the operating steps and reduce the wear of the fan-shaped shell 53, in this embodiment, the front and rear sides of the scraper 4 are rotatably connected to the corresponding connecting rod 42 through the second rotating shaft 54, and a fourth motor 55 for driving the scraper 4 to rotate is installed on the connecting rod 42. The fourth motor 55 is fixedly connected to one of the connecting rods 42, and the output shaft of the fourth motor 55 is fixedly connected to the second rotating shaft 54, such as Figure 4As shown, preferably, the lengths of the baffle plate 51 and the fan-shaped shell 53 are equal to the length of the scraper 4, and the length of the scraper 4 is also equal to Figure 4 The vertical dimension of the scraper 4 in the view is that the second rotating shaft 54 ​​is a hollow shaft, the first rotating shaft 52 extends into the inner side of the corresponding second rotating shaft 54 ​​and is rotatably connected to the second rotating shaft 54, and the third motor 43 is fixedly connected to the other connecting rod 42, that is, the third motor 43 and the fourth motor 55 are respectively installed on a group of connecting rods 42.

[0049] In this embodiment, the scraper 4 is rotatably connected to the connecting rod 42. After the first feeding is completed, the scraper 4 is driven to rotate by the fourth motor 55 so that the front side of the scraper 4 rotates to be flush with the second plane of the fan-shaped shell 53, thereby completing the second feeding. This simplifies the operation steps of batch feeding and reduces the number of frictions between the curved surface of the fan-shaped shell 53 and the scraper 4.

[0050] In this embodiment, the scraper 4 also has an initial angle within its rotation stroke. When it is at the initial angle, the scraper 4 is in a horizontal state, and the front of the scraper 4 faces downward. After completing two feedings, the second motor 41 can be used to drive the connecting rod 42 to rotate in the opposite direction, so that the baffle plate 51, the fan-shaped shell 53 and the scraper 4 maintain the state after completing the second feeding and rotate in the opposite direction to the initial angle. After the scraper 4 rotates to the initial angle, the third motor 43 drives the baffle plate 51 and the fan-shaped shell 53 to return to the material blocking state, and the fourth motor 55 drives the scraper 4 to rotate to the initial state, that is, the scraper 4 is in Figure 5 and Figure 6 The state shown in the view.

[0051] In another embodiment of the present invention, the ends of the two groups of connecting rods 42 are fixedly connected to the limiting plates 421. The plane where the limiting plates 421 are located is arranged along the length direction of the connecting rods 42. When the scraper 4 is driven to rotate, the limiting plates 421 support the scraper 4.

[0052] Specifically, during the scraping process of the scraper 4, when the scraper 4 is driven to rotate from the initial angle to the feeding angle, the side of the scraper 4 away from the connecting rod 42 directly contacts the inner wall of the screen 3 and needs to be close to the screen 3 and slide along the inner wall of the screen 3. Since large particles of material are gathered on the inner side of the screen 3, the scraper 4 will encounter greater resistance when rotating from the initial angle to the feeding angle. In the above embodiment, the scraper 4 is rotatably connected to the connecting rod 42, so that the stability of the scraper 4 during the rotation process is poor, and even In order to cause the angle of the scraper 4 to shift and affect the scraping effect of the scraper 4, in the present embodiment, one end of the two sets of connecting rods 42 away from the rotation axis is fixedly connected to the limit plate 421. When the scraper 4 is in the initial state, the scraper 4 and the limit plate 421 are parallel to each other, and the back of the scraper 4 is in contact with the limit plate 421. In this way, when the scraper 4 rotates from the initial angle to the feeding angle, the position of the scraper 4 corresponding to the limit plate 421 can be supported by the limit plate 421, thereby improving the stability of the scraper 4 during rotation.

[0053] Furthermore, the scraper 4 includes a guide plate 401 and an arc plate 402. The guide plate 401 is rotatably connected to the connecting rod 42. The arc plate 402 is fixed to the side of the guide plate 401 away from the connecting rod 42, and the arc plate 402 is tightly attached to the inner wall of the screen 3. When the scraper 4 is driven to rotate toward the feeding angle, the arc plate 402 scrapes the material on the inner wall of the screen 3.

[0054] Specifically, since the scraper 4 is arranged along the radial direction of the screen 3, this results in that when the scraper 4 rotates from the initial angle to the feeding angle, it is subjected to greater resistance from large particle materials, and the large particle materials are always gathered at the intersection of the scraper 4 and the screen 3, which is more unfavorable for the scraper 4 to scrape and transport the large particle materials. In this embodiment, the scraper 4 includes a guide plate 401 and an arc plate 402. The guide plate 401 is arranged along the radial direction of the screen 3. The front and back sides of the scraper 4 are also the front and back sides of the guide plate 401. The guide plate 401 is rotatably connected to the connecting rod 42, and its connection method is the same as that of the scraper 4 in the above embodiment, except that To repeat, the arc plate 402 is installed on the side of the guide plate 401 away from the connecting rod 42, and the arc plate 402 is in close contact with the inner wall of the screen 3. The side of the arc plate 402 away from the guide plate 401 is bent toward the front of the guide plate 401. The setting of the arc plate 402 reduces the cutting angle of the contact position with the screen 3, thereby reducing the resistance of the scraper 4 during the overall rotation, and when the arc plate 402 follows the guide plate 401 to rotate from the bottom of the screen 3 to the feeding angle, the inner concave surface of the arc plate 402 also has the function of guiding the material to move toward the guide plate 401, further avoiding the material from gathering at the intersection of the scraper 4 and the screen 3.

[0055] Furthermore, the front and rear sides of the material guide plate 401 and the arc plate 402 are fixedly connected with side baffles 403 , and both side baffles 403 protrude from the material guide plate 401 and the arc plate 402 for the side arrangement of material guiding.

[0056] Specifically, in the process of scraping the large particles on the screen 3 by the scraper 4, in order to prevent the material from Figure 6 In the view, the front and rear sides of the scraper 4 fall back onto the screen 3. In this embodiment, the side baffles 403 are fixed to the front and rear sides of the guide plate 401 and the curved plate 402. The side baffles 403 are protruding from the front side of the guide plate 401, and the shapes of the side baffles 403 and the guide plate 401 and the curved plate 402 are adapted to prevent large particles from falling from the front and rear sides of the scraper 4.

[0057] Furthermore, the mesh holes of the screen 3 are all opened along its own radial direction.

[0058] Specifically, in order to reduce the axial depth of the mesh holes to facilitate the passage of small particles, in this embodiment, the mesh holes of the screen 3 are all opened along the radial direction of the screen 3, so that the depth of each mesh hole is the same as the thickness of the screen 3.

[0059] In another embodiment of the present invention, a support plate 404 is fixedly connected to one side of the arc-shaped plate 402 , and the support plate 404 is in contact with the inner wall of the screen 3 .

[0060] Specifically, since the arc plate 402 is arranged in an arc shape, in order to enhance the scraping effect of the arc plate 402 during implementation, the thickness of the position in contact with the screen 3 is designed to be smaller, which makes it easy for the arc plate 402 to deform due to excessive resistance when the scraper 4 rotates from the initial angle to the feeding angle, further resulting in the arc plate 402 being unable to fit tightly with the screen 3 and reducing the scraping effect of the arc plate 402. In this embodiment, a support plate 404 is fixedly connected to the arched side of the arc plate 402, that is, the support plate 404 is fixedly connected to the outer wall of the arc plate 402 on the same side as the back of the guide plate 401. When the scraper 4 is in the initial state, the support plate 404 contacts the inner wall of the screen 3. In this way, when the scraper 4 rotates from the initial angle to the feeding angle, the support plate 404 can support the arc plate 402 to prevent the arc plate 402 from deforming.

[0061] Furthermore, the support plate 404 is provided with through slots 405 , which are provided along the width direction of the support plate 404 , and are arranged in an array along the length direction of the support plate 404 .

[0062] Specifically, since the lower opening diameter of the crushing cylinder 21 is smaller than the diameter of the screen 3, the crushed material can only be filtered using a partial area of ​​the screen 3, which can easily lead to too much material on the screen 3 and cannot be filtered and screened in time, so that more crushed materials are gathered in the middle of the screen 3, including some small particles that meet the screening requirements and large particles that need to be crushed again. This part of the small particles are mixed in the large particles and cannot pass through the mesh of the screen 3. In the above embodiment, when the scraper 4 rotates from the initial angle to the feeding angle, this part of the small particles are scraped together with the large particles, making the rotation resistance of the scraper 4 too large; in this embodiment, a through groove 405 is opened on the support plate 404, and the through groove 405 is opened along the width direction of the support plate 404, and the through groove 405 is arranged in an array along the length direction of the support plate 404, so that the support plate 404 forms a rake shape, and when the above-mentioned scraper 4 rotates from the feeding angle to the initial angle, the support plate 404 can move the material gathered in the middle of the screen 3 to Figure 1 The left side guide in the view increases the area of ​​the screen 3 used for screening, thereby facilitating the screening of materials by the screen 3.

[0063] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A vertical pulverizing device, comprising a pulverizing body, a pulverizing mechanism disposed in the upper part of the pulverizing body, and a screen disposed in the lower part of the pulverizing body, wherein the pulverizing mechanism comprises a pulverizing cylinder, a pulverizing knife group rotatably mounted in the inner cavity of the pulverizing cylinder, and a driving member for driving the pulverizing knife group to rotate, characterized in that: The screen is semicircular, and a scraper with a rotating stroke adapted to the screen is rotatably installed on the outer wall of the crushing cylinder. The scraper has a feeding angle corresponding to the upper part of the crushing cylinder, and a material blocking assembly for blocking the material is installed on the scraper. When the scraper is driven to rotate to the feeding angle, the material blocking assembly is driven to switch to a discharging state of feeding the material into the crushing cylinder. Connecting rods are rotatably installed on the front and rear sides of the crushing cylinder, and the front and rear sides of the scraper are respectively connected to the corresponding connecting rods. The material blocking assembly includes a material blocking plate, which is rotatably connected to the scraper. When the scraper is at the feeding angle, the material blocking plate is driven to rotate until it contacts the inner wall of the upper opening of the material collection port.

2. A vertical crushing device according to claim 1, characterized in that: A gathering hopper is installed on the upper part of the pulverizing cylinder. The upper opening of the gathering hopper is rectangular, and the length of the scraper is smaller than the length of the upper opening of the gathering hopper.

3. A vertical crushing device according to claim 2, characterized in that: An upper hopper is installed at the inner upper part of the pulverizer body, the upper opening of the upper hopper is connected to the outside of the pulverizer body, the lower opening of the upper hopper is arranged on the inner side of the gathering hopper, and a feeding channel is left between the outer wall of the upper hopper and the inner wall of the gathering hopper.

4. A vertical crushing device according to claim 1, characterized in that: The material baffle assembly also includes a fan-shaped shell fixedly connected to the material baffle plate. The center of the fan-shaped surface of the fan-shaped shell is on the rotation axis of the material baffle plate. An arc groove matching the arc surface of the fan-shaped shell is provided on the scraper. When the scraper is driven to rotate, a surface of the fan-shaped shell is flush with the surface of the scraper used for feeding.

5. A vertical crushing device according to claim 4, characterized in that: The front side and the rear side of the scraper are rotatably connected to the corresponding connecting rods.

6. A vertical crushing device according to claim 1, characterized in that: The ends of the two groups of connecting rods are fixedly connected to the limit plates. The plane where the limit plates are located is arranged along the length direction of the connecting rods. When the scraper is driven to rotate, the limit plates support the scraper.

7. A vertical crushing device according to claim 5, characterized in that: The scraper includes a guide plate and an arc plate. The guide plate is rotatably connected to the connecting rod. The arc plate is fixed to the side of the guide plate away from the connecting rod, and the arc plate is tightly attached to the inner wall of the screen. When the scraper is driven to rotate toward the feeding angle, the arc plate scrapes the material on the inner wall of the screen.

8. A vertical crushing device according to claim 7, characterized in that: The front and rear sides of the material guide plate and the arc plate are fixedly connected with side baffles, and the baffles on both sides protrude from the material guide plate and the arc plate and are used for the side arrangement of material guiding.

9. A vertical crushing device according to claim 1, characterized in that: The mesh holes of the screen are all opened along its own radial direction.

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