A vertical mill

Abstract

The application relates to a vertical mill and belongs to the field of building material processing equipment, which comprises a shell, a grinding disc installed in the shell, a plurality of grinding rollers installed in the shell and located above the grinding disc and a lower hopper installed in the shell, a discharge port of the lower hopper is located above the grinding disc, a bottom of a distribution hopper in a sealing shape is sleeved and slidingly connected with the discharge port of the lower hopper, a discharge port corresponding to the grinding roller is formed in a side wall of the distribution hopper, a cover plate for sealing the discharge port is hinged to the distribution hopper, a hinge point of the cover plate is located at the top of the cover plate, a distribution assembly for controlling intermittent opening and closing of the cover plate is arranged in the distribution hopper, and a material pushing assembly for spreading the material flowing out of the distribution hopper is further arranged outside the distribution hopper. The application has the effect of reducing the adverse effect on the processing efficiency of the vertical mill.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of building material processing equipment, in particular to a vertical mill. BACKGROUND

[0002] The vertical mill is a large-scale powder equipment, which is widely used in cement, power, metallurgy, chemical industry, non-metallic mineral industry and other industries. The vertical mill integrates crushing, drying, powdering and grading conveying, and has high production efficiency. It can grind blocky, granular and powder raw materials into the required powder materials. The common vertical mill includes a shell, a horizontal grinding disc installed in the shell, one or more grinding rollers installed in the shell, the axial direction of the grinding roller being perpendicular to the axial direction of the grinding disc, and a lower hopper installed in the shell, the discharge port of the lower hopper being located at the center of the grinding disc.

[0003] When the material is processed, the material falls from the lower hopper to the grinding disc, the grinding disc rotates to throw the material at the center of the grinding disc to the grinding roller at the edge of the grinding disc, the grinding roller rotates to grind the material, and the ground material enters the powder classifier for screening.

[0004] Since the grinding disc rotates to naturally throw the material to the grinding roller, the thickness of the material at each part of the edge of the grinding disc may be uneven. When the material is too thick, it will cause the load of the main motor of the vertical mill to increase, which may cause the main motor of the vertical mill to stop, and adversely affect the processing efficiency of the vertical mill. SUMMARY

[0005] In order to reduce the adverse effects on the processing efficiency of the vertical mill, the present application provides a vertical mill.

[0006] The present application provides a vertical mill adopting the following technical scheme:

[0007] A vertical mill includes a shell, a grinding disc installed in the shell, a plurality of grinding rollers installed in the shell above the grinding disc, and a lower hopper installed in the shell, the discharge port of the lower hopper being located above the grinding disc, and a bottom-blocking distribution hopper being covered and slidingly fitted at the discharge port of the lower hopper.

[0008] A side wall of the distribution hopper is provided with a discharge port corresponding to each grinding roller, a cover plate for blocking the discharge port is hinged to the distribution hopper, the hinge point of the cover plate being located at the top of the cover plate, and a distribution assembly for intermittently opening and closing the cover plate is further provided in the distribution hopper.

[0009] A material pushing assembly is further provided outside the distribution hopper to spread the material flowing out of the distribution hopper.

[0010] By adopting the technical scheme, in the initial state, the distributing assembly blocks the discharge port with the cover plate, when the vertical mill works, the material in the lower hopper falls into the distributing hopper; the operator controls the distributing assembly to work, the distributing assembly drives the cover plate to rotate, the discharge port is opened, the material in the distributing hopper leaks out to the grinding disc through the discharge port, and the operator controls the material distributing assembly to spread the material on the grinding disc, so that the material is evenly distributed around the lower hopper on the grinding disc.

[0011] With the rotation of the grinding disc, the grinding disc can throw the material around the lower hopper to the edge of the grinding disc, so that the thickness of the material at the edge of the grinding roller is uniform, and the situation that the material is too thick at a certain position under the grinding roller, which causes the load of the main motor of the vertical mill to increase, is reduced, thereby reducing the possibility of the main motor of the vertical mill stopping and the adverse effect on the processing efficiency of the vertical mill.

[0012] The operator controls the distributing assembly to work, so that the cover plate is reset, the intermittent discharging is achieved, and the operator controls the material distributing assembly to work, so that the material distributing assembly is reset; the above operation is repeated, so that the material on the grinding disc can be spread continuously.

[0013] Optionally, the distributing assembly comprises a pushing box hinged to the inner bottom wall of the distributing hopper in one-to-one correspondence with the cover plate, the top of the pushing box is in an open state, the hinge point of the pushing box is located on the side of the pushing box close to the edge of the distributing hopper, a transmission rod is hinged to the side of the pushing box away from the hinge point of the pushing box, and the transmission rod is hinged to the cover plate.

[0014] The lower surface of the pushing box is fixedly connected with a supporting rod, and the lower end of the supporting rod penetrates through the lower surface of the distributing hopper and is in contact with the grinding disc.

[0015] The shell further comprises a driving member for controlling the movement of the distributing hopper along the height direction of the shell, and the movement of the distributing hopper drives the cover plate to rotate through the pushing box.

[0016] By adopting the technical scheme, in the initial state, the driving member is connected to the distributing hopper, the supporting rod is in contact with the grinding disc, the lower surface of the pushing box is in contact with the inner bottom wall of the distributing hopper at this time, the material limits the pushing box, the pushing box and the transmission rod limit the cover plate, and the cover plate blocks the discharge port; when the vertical mill works, the driving member is controlled to work, the driving member drives the distributing hopper and the pushing box to move downward, at the same time, the supporting rod limits the pushing box, the pushing box rotates upward, the pushing box pushes the transmission rod to move outward from the distributing hopper when the pushing box rotates, the transmission rod moves and pushes the cover plate to rotate away from the distributing hopper, so that the discharge port is opened.

[0017] When the pushing box is rotated to a certain angle, the material in the pushing box leaks out of the discharge port to the grinding disc, and after the driving member works for a period of time, the distribution hopper moves downward to the limit position, at this time, the driving member is controlled to work, so that the driving member drives the distribution hopper to move upward, and at the same time, the pushing box is gradually rotated downward under the action of gravity; the pushing box pulls the transmission rod to move into the distribution hopper, and the movement of the transmission rod drives the cover plate to rotate to the initial position, and when the distribution hopper moves upward to the initial position, the pushing box and the cover plate are reset, and the cover plate blocks the discharge port.

[0018] Optionally, the driving member comprises a plurality of protrusions fixed on the outer side wall of the distribution hopper, and further comprises a plurality of lead screws corresponding to the protrusions, the lead screws penetrating through the protrusions and being threadedly connected with the protrusions, and a motor corresponding to the lead screws and driving the lead screws to rotate is further installed on the distribution hopper, and the driving member further comprises a controller, and the motor is electrically connected with the controller.

[0019] By adopting the above technical scheme, when it is needed to drive the distribution hopper to move along the axial direction of the shell, the controller controls the motor to work, the motor drives the lead screw to rotate, and at the same time, the lead screw drives the protrusion to move, so that the protrusion and the distribution hopper move downward; when it is needed to make the distribution hopper move upward to reset, the controller controls the motor to work, the motor drives the lead screw to rotate reversely, so as to drive the protrusion and the distribution hopper to move upward.

[0020] Optionally, a ball is rotatably connected to the lower end of the supporting rod, and the ball is in rolling cooperation with the grinding disc.

[0021] By adopting the above technical scheme, when the grinding disc rotates, the ball is in rolling cooperation with the grinding disc, so that the wear of the supporting rod and the grinding disc is reduced.

[0022] Optionally, the poking assembly comprises a poking plate corresponding to the cover plate, the upper portion of the poking plate is hingedly connected with a sliding block, the sliding block is slidably connected with the outer side wall of the distribution hopper, and the sliding block slides along the height direction of the distribution hopper, a connecting spring is connected to the sliding block, and the connecting spring is connected to the position above the sliding block of the distribution hopper;

[0023] The lower side of the poking plate is hingedly connected with a plurality of guide rings, a guide rod is arranged in the guide ring, the length direction of the guide rod is arranged along the direction of the connecting line between the corresponding discharge cover and the grinding roller, and one end of the guide rod is fixed to the side wall of the distribution hopper;

[0024] The side of the poking plate close to the distribution hopper is hingedly connected with a hinge rod penetrating through the side wall of the distribution hopper, and the poking assembly further comprises a power member controlling the movement of the hinge rod to control the rotation of the poking plate.

[0025] By adopting the technical scheme, in the initial state, the pushing box is in contact with the inner bottom wall of the distribution hopper, the connecting spring limits the sliding block and the stirring plate, and the power member also limits the stirring plate through the hinged rod, so that the lower side of the stirring plate is close to the grinding roller; when the distribution hopper drives the stirring plate to move downward, the transmission member works to pull the hinged rod to move into the distribution hopper, the movement of the hinged rod drives the stirring plate to rotate towards the distribution hopper, and at the same time, the upper side of the stirring plate drives the sliding block to move upward, and the sliding block compresses the connecting spring.

[0026] When the distribution hopper moves downward to the limit position, the stirring plate rotates to be in contact with the cover plate; when the distribution hopper drives the stirring plate to rotate upward, the transmission member works to push the hinged rod to move out of the distribution hopper, and at the same time, the connecting spring drives the sliding block and the upper side of the stirring plate to move downward, the stirring plate rotates, and at the same time, the guide rod and the guide ring limit the lower side of the stirring plate, the hinged rod, the sliding block, the guide rod and the guide ring cooperate to make the stirring plate rotate away from the distribution hopper, so as to push the material to be spread on the grinding disc.

[0027] Optionally, a sliding groove corresponding to the sliding block is formed in the outer side wall of the distribution hopper, and the length direction of the sliding groove is arranged along the height direction of the distribution hopper, and each sliding block is slidingly inserted into the corresponding sliding groove.

[0028] By adopting the technical scheme, the sliding block and the sliding groove cooperate to make the stirring plate and the distribution hopper slidingly cooperate.

[0029] Optionally, the lower end of the distribution hopper gradually reduces in diameter, the transmission member comprises a mounting block hinged to the end of the hinged rod away from the stirring plate, the mounting block is slidingly connected with the inclined outer side wall of the distribution hopper, and the mounting block slides along the height direction of the shell.

[0030] The mounting block is hinged with a connecting rod, the lower end of the connecting rod is hinged with the inner bottom wall of the distribution hopper, a limiting spring is connected to the mounting block, and the end of the limiting spring away from the mounting block is fixed at a position above the mounting block on the inclined side wall of the distribution hopper.

[0031] By adopting the technical scheme, when the distribution hopper moves downward, the distribution hopper drives the connecting rod and the mounting block to move downward, the movement of the mounting block stretches the limiting spring, and the movement of the mounting block drives the hinged rod to move into the distribution hopper, so that the hinged rod drives the stirring plate to rotate towards the distribution hopper; when the distribution hopper moves upward, the limiting spring restores the deformation and drives the mounting block and the connecting rod to move upward, and at the same time, the mounting block drives the hinged rod to move out of the distribution hopper, so that the hinged rod can drive the stirring plate to rotate away from the distribution hopper.

[0032] Optionally, the inclined side wall of the distribution hopper is provided with a mounting groove matched with the mounting block, and the mounting block is slidingly inserted into the mounting groove.

[0033] By adopting the technical scheme, the mounting block is matched with the mounting groove, and the mounting block is matched with the lower hopper in a sliding mode.

[0034] To sum up, the application has at least one of the following beneficial technical effects:

[0035] 1. By arranging the grinding disc, the grinding roller, the lower hopper, the distribution hopper, the discharge port, the cover plate, the distribution assembly and the stirring assembly, the adverse effects of the processing efficiency of the vertical mill are reduced.

[0036] 2. By arranging the pushing box, the transmission rod, the supporting rod and the driving member, the intermittent discharge of the discharge port can be controlled.

[0037] 3. By arranging the stirring plate, the sliding block, the connecting spring, the guide ring, the guide rod, the hinged rod and the power member, the material on the grinding disc can be spread. BRIEF DESCRIPTION OF DRAWINGS

[0038] Figure 1 is a sectional view of the embodiment of the application, which shows the overall structure of the vertical mill.

[0039] Figure 2 is a sectional view of the embodiment of the application, which shows the partial structure of the distribution assembly.

[0040] Figure 3 is a sectional view of the embodiment of the application, which shows the structure of the driving member.

[0041] Figure 4 is a sectional view of the embodiment of the application, which shows the partial structure of the stirring assembly.

[0042] Figure 5 is a sectional view of the embodiment of the application, which shows the structure of the power member.

[0043] BRIEF DESCRIPTION OF DRAWINGS 1. housing; 2. grinding disc; 3. lower hopper; 31. mounting groove; 4. grinding roller; 5. distribution hopper; 51. discharge port; 52. cover plate; 53. chute; 6. distribution assembly; 61. pushing box; 62. supporting rod; 63. ball; 64. transmission rod; 65. driving member; 651. protruding block; 652. lead screw; 653. motor; 7. stirring assembly; 71. stirring plate; 711. sliding block; 72. connecting spring; 73. guide ring; 74. guide rod; 75. hinged rod; 76. power member; 761. mounting block; 762. limiting spring; 763. connecting rod. DETAILED DESCRIPTION

[0044] The application will be further described in detail below. Figures 1-5 The application will be further described in detail below.

[0045] The embodiment of the application discloses a vertical mill. Referring to Figure 1, including the shell 1, the shell 1 is installed with the grinding disc 2, the shell 1 is also installed with the lower hopper 3, the lower hopper 3 is located above the grinding disc 2, and the lower hopper 3, the grinding disc 2 and the shell 1 are coaxial, there is a gap between the discharge port of the lower hopper 3 and the upper end surface of the grinding disc 2, and the diameter of the lower end of the lower hopper 3 gradually decreases from top to bottom; a plurality of grinding rollers 4 are also installed in the shell 1 at the edge of the grinding disc 2, the axial direction of the grinding roller 4 is arranged along the radial direction of the shell 1, and the number of grinding rollers 4 in the embodiment is three; the three grinding rollers 4 are uniformly distributed along the circumferential direction of the grinding disc 2.

[0046] Referring to Figure 1 With Figure 2 , the lower end of the lower hopper 3 is sleeved with a distribution hopper 5, the inner side wall of the distribution hopper 5 is in contact with the outer side wall of the lower hopper 3, and the lower end of the distribution hopper 5 is in a sealing state, a discharge port 51 corresponding to the grinding roller 4 is formed in the side wall of the distribution hopper 5, a cover plate 52 for sealing the discharge port 51 is hinged to the outer side wall of the distribution hopper 5, and the hinge point of the cover plate 52 and the distribution hopper 5 is located at the top of the cover plate 52; a distribution assembly 6 for driving the cover plate 52 to rotate is arranged in the shell 1, and intermittent discharge of the distribution hopper 5 can be realized by controlling the rotation of the cover plate 52.

[0047] The distribution assembly 6 comprises a pushing box 61 corresponding to the cover plate 52 arranged in the distribution hopper 5, the pushing box 61 is located on one side of the cover plate 52, and the lower surface of the pushing box 61 close to one side of the cover plate 52 is hinged to the inner bottom wall of the distribution hopper 5; a supporting rod 62 is fixedly connected to the lower surface of the pushing box 61, the supporting rod 62 is perpendicular to the inner bottom wall of the distribution hopper 5, a ball 63 is rotatably connected to the lower end surface of the supporting rod 62, and the ball 63 is in rolling fit with the grinding disc 2; a transmission rod 64 is hinged to the top of the side of the distribution box away from the distribution plate, and one end of the transmission rod 64 away from the distribution box is hinged to the upper part of the cover plate 52.

[0048] Referring to Figure 1 With Figure 3 , the distribution assembly 6 further comprises a driving member 65 for driving the distribution hopper 5 to move axially along the shell 1, the driving member 65 comprises a plurality of protrusions 651 fixedly connected to the outer side wall of the distribution hopper 5, and the plurality of protrusions 651 are uniformly distributed along the circumferential direction of the distribution hopper 5; in the embodiment, the number of protrusions 651 is two; a lead screw 652 is threadedly connected in each protrusion 651, the lead screw 652 penetrates the protrusion 651, a motor 653 corresponding to the lead screw 652 is fixedly connected to the outer side wall of the lower hopper 3, the motor 653 is located above the lead screw 652, the output shaft of the motor 653 is coaxial with the lead screw 652, and the output shaft of the motor 653 is fixedly connected with the lead screw 652.

[0049] When the initial state, the material in the lower hopper 3 falls into the distribution hopper 5, part of the material falls into the push box 61, the lead screw 652 cooperates with the protrusion 651 to connect the distribution hopper 5, the material makes the lower surface of the push box 61 contact with the inner bottom wall of the distribution hopper 5, the push box 61 cooperates with the hinged rod 75 to limit the cover plate 52, so that the cover plate 52 blocks the discharge port 51; when the vertical mill is working, the controller controls the motor 653 to work, the output shaft of the motor 653 rotates to drive the lead screw 652 to rotate, the lead screw 652 drives the protrusion 651 and the distribution hopper 5 to move downward.

[0050] When the distribution hopper 5 moves downward, the ball 63 cooperates with the support rod 62 to push the push box 61 to rotate upward, the push box 61 pushes the transmission rod 64 to rotate, the transmission rod 64 pushes the cover plate 52 to rotate, so that the discharge port 51 is gradually opened; after the controller controls the motor 653 to work for a period of time, the push box 61 is rotated to a certain angle, and the material in the push box 61 falls onto the grinding disc 2 through the discharge port 51.

[0051] When the controller controls the motor 653 to work for a period of time, the controller controls the output shaft of the motor 653 to drive the lead screw 652 to reverse, the lead screw 652 drives the distribution hopper 5 to move upward, the distribution hopper 5 drives the push box 61 to move upward, and at the same time, the push box 61 rotates downward under the action of its own gravity, the push box 61 drives the cover plate 52 to rotate and reset through the transmission rod 64; after the motor 653 works for a period of time, the distribution hopper 5, the push box 61 and the cover plate 52 are reset, at this time the discharge port 51 is closed and the material in the distribution hopper 5 stops being transported outward. During the working process of the vertical mill, the controller controls the output shaft of the motor 653 to reciprocate and reverse, thereby controlling the distribution hopper 5 to continuously and intermittently discharge.

[0052] Referring to Figure 1 With Figure 4 , the shell 1 is also provided with a material pushing assembly 7 for spreading the material leaked from the distribution hopper 5, the material pushing assembly 7 comprises a material pushing plate 71 corresponding to the grinding roller 4, the material pushing plate 71 is located outside the distribution hopper 5, and the material pushing plate 71 is an arc-shaped plate; referring to Figure 4 With Figure 5 , the inner side wall of the material pushing plate 71 is hinged with a sliding block 711, the outer side wall of the distribution hopper 5 is provided with a sliding groove 53 corresponding to the sliding block 711, the length direction of the sliding groove 53 is arranged along the axial direction of the shell 1, the sliding block 711 is slidingly inserted into the sliding groove 53, and the sliding block 711 and the sliding groove 53 cooperate to enable the material pushing plate 71 to slide along the axial direction of the distribution hopper 5.

[0053] The upper surface of the sliding block 711 is fixedly connected with a connecting spring 72, the upper end of the connecting spring 72 is fixed with the groove wall of the upper end of the sliding groove 53, and the connecting spring 72 limits the sliding block 711 and the stirring plate 71; the middle part of the lower surface of the stirring plate 71 is hingedly connected with a guide ring 73, the guide ring 73 is penetrated with a guide rod 74, the length direction of the guide rod 74 is arranged along the connecting direction of the grinding roller 4 and the cover plate 52, one end of the guide rod 74 is fixed with the bottom of the side wall of the distribution hopper 5, and the guide rod 74 limits the lower surface of the guide ring 73 and the stirring plate 71, so that the lower surface of the stirring plate 71 is always flush with the guide rod 74 when the stirring plate 71 rotates.

[0054] The side wall of the distribution hopper 5 is hingedly connected with a hinge rod 75 close to the stirring plate 71, a strip-shaped hole is arranged on the side wall of the distribution hopper 5 and slidably inserted with the hinge rod 75, the length direction of the strip-shaped hole is arranged along the axial direction of the distribution hopper 5, the hinge rod 75 is penetrated in the strip-shaped hole, and one end of the hinge rod 75 is located in the distribution hopper 5; the distribution hopper 5 is further provided with a power member 76 for controlling the movement of the hinge rod 75 and the rotation of the stirring plate 71.

[0055] The power member 76 comprises an installation block 761 hingedly connected with the hinge rod 75 located at one end of the distribution hopper 5, an installation groove 31 is arranged on the inclined outer side wall of the lower hopper 3 and matched with the installation block 761, the length direction of the installation groove 31 is arranged along the axial direction of the lower hopper 3, and the installation block 761 is slidably inserted in the installation groove 31; the upper surface of the installation block 761 is fixedly connected with a limiting spring 762, and one end of the limiting spring 762 away from the installation block 761 is fixed with the groove wall of the upper end of the installation groove 31. The installation block 761 is further hingedly connected with a connecting rod 763, and one end of the connecting rod 763 away from the installation block 761 is hingedly connected with the inner bottom wall of the distribution hopper 5.

[0056] When the pushing box 61 contacts with the inner bottom wall of the distribution hopper 5, the limiting spring 762 and the connecting spring 72 are in an initial state; the limiting spring 762 limits the installation block 761, the hinge rod 75 and the connecting rod 763, the connecting spring 72 limits the upper side of the sliding block 711 and the stirring plate 71, the sliding block 711 cooperates with the hinge rod 75 to limit the stirring plate 71, so that the stirring plate 71 is in an inclined state, and the lower side of the stirring plate 71 is close to the corresponding grinding roller 4.

[0057] When the distribution hopper 5 and the poking plate 71 move downward, the distribution hopper 5 drives the connecting rod 763 and the mounting block 761 to slide downward, and the mounting block 761 stretches the limiting spring 762, and the movement of the mounting block 761 drives the corresponding end of the hinged rod 75 to move downward, the end of the hinged rod 75 close to the poking plate 71 pulls the poking plate 71 to rotate towards the distribution hopper 5, and the upper side of the poking plate 71 pushes the sliding block 711 to move upward, and the movement of the sliding block 711 compresses the connecting spring 72; as the distribution hopper 5 and the poking plate 71 continue to move downward, the poking plate 71 gradually approaches the distribution hopper 5, and the lower side of the poking plate 71 gradually inserts into the material on the grinding disc 2.

[0058] When the distribution hopper 5 moves downward to the limit, the poking plate 71 approaches the distribution hopper 5, and the poking plate 71 contacts the inclined cover plate 52, and the lower side of the poking plate 71 inserts into the material on the grinding disc 2; when the distribution hopper 5 moves upward, the limiting spring 762 restores the deformation and pulls the mounting block 761 and the connecting rod 763 to move upward, and the mounting block 761 pushes the hinged rod 75 to move outward from the distribution hopper 5, the hinged rod 75 pushes the poking plate 71 to rotate away from the distribution hopper 5, the connecting spring 72 restores the deformation and pushes the sliding block 711 and the upper side of the poking plate 71 to move downward, and the connecting spring 72 cooperates with the hinged rod 75 to better drive the poking plate 71 to rotate.

[0059] When the poking plate 71 rotates, the poking plate 71 pushes the material towards the grinding disc 2, so as to spread the material accumulated around the distribution hopper 5 on the grinding disc 2; as the grinding disc 2 rotates, the grinding disc 2 can uniformly throw the material to the edge of the grinding disc 2, so that the thickness of the material at each position of the edge of the grinding disc 2 is uniform, the situation that the load of the main motor 653 of the vertical mill increases due to the over-thick material at the edge of the grinding disc 2 is reduced, the possibility of the main motor 653 of the vertical mill being stopped is reduced, and the adverse effect on the processing efficiency of the vertical mill is reduced.

[0060] The implementation principle of the vertical mill is as follows: when the vertical mill works, the material in the lower hopper 3 falls into the distribution hopper 5, the controller controls the motor 653 to drive the lead screw 652 to work, and the motor 653 drives the distribution hopper 5 to move along the axial direction of the shell 1; when the distribution hopper 5 moves downward, the support rod 62 pushes the pushing box 61 to rotate, and the pushing box 61 pushes the cover plate 52 to open, and the hinged rod 75 drives the poking plate 71 to rotate towards the cover plate 52; when the distribution hopper 5 moves downward to the limit position, the poking plate 71 inserts into the material, and the poking plate 71 contacts the cover plate 52, and the pushing box 61 is inclined to make the material fall from the discharge port 51 to the grinding disc 2.

[0061] When the distribution hopper 5 moves upward, the limit spring 762 resets with the connecting spring 72, so that the poking plate 71 rotates toward the direction of approaching the grinding roller 4, and the poking plate 71 pushes the material to move, the pushing box 61 rotates downward, and the cover plate 52 rotates to reset through the transmission rod 64; when the distribution hopper 5 moves upward to the initial position, the poking plate 71 and the cover plate 52 reset.

[0062] The above are preferred embodiments of the present application, and do not limit the protection scope of the present application, so: any equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A vertical mill, comprising a housing (1), a grinding disc (2) installed in the housing (1), a plurality of grinding rollers (4) installed in the housing (1) and located above the grinding disc (2), and a feed hopper (3) installed in the housing (1), wherein the discharge port of the feed hopper (3) is located above the grinding disc (2), characterized in that: The bottom of the discharging outlet (51) of the lower hopper (3) is covered and slidingly connected with a bottom-blocking distribution hopper (5); A side wall of the distribution hopper (5) is provided with a discharging outlet (51) corresponding to the grinding roller (4), the distribution hopper (5) is further hingedly connected with a cover plate (52) for blocking the discharging outlet (51), a hinging point of the cover plate (52) is located at a top of the cover plate (52), and the distribution hopper (5) is further provided with a distribution assembly (6) for intermittently opening and closing the cover plate (52); The distribution hopper (5) is further provided with a material pushing assembly (7) for spreading the material flowing out of the distribution hopper (5); the distribution assembly (6) comprises a pushing box (61) hingedly connected to an inner bottom wall of the distribution hopper (5) and corresponding to the cover plate (52), a top of the pushing box (61) is in an open state, a hinging point of the pushing box (61) is located at a side of the pushing box (61) close to an edge of the distribution hopper (5), a side of the pushing box (61) away from the hinging point is hingedly connected with a transmission rod (64), and the transmission rod (64) is hingedly connected with the cover plate (52); A lower surface of the pushing box (61) is fixedly connected with a supporting rod (62), a lower end of the supporting rod (62) penetrates through a lower surface of the distribution hopper (5) and is in contact with the grinding disc (2); The housing (1) is further provided with a driving member (65) for controlling the distribution hopper (5) to move along a height direction of the housing (1), and the distribution hopper (5) moves through the pushing box (61) to drive the cover plate (52) to rotate; The material pushing assembly (7) comprises a material pushing plate (71) corresponding to the cover plate (52), an upper portion of the material pushing plate (71) is hingedly connected with a sliding block (711), the sliding block (711) is slidingly connected with an outer side wall of the distribution hopper (5) and slides along a height direction of the distribution hopper (5), the sliding block (711) is connected with a connecting spring (72), and the connecting spring (72) is connected to a position of the distribution hopper (5) above the sliding block (711); A lower side of the material pushing plate (71) is hingedly connected with a plurality of guide rings (73), the guide rings (73) are provided with guide rods (74) penetrating therethrough, the guide rods (74) are arranged along a direction corresponding to a connecting line direction of the discharging cover and the grinding roller (4), and one end of each guide rod (74) is fixed to a side wall of the distribution hopper (5); A side of the material pushing plate (71) close to the distribution hopper (5) is hingedly connected with a hinging rod (75) penetrating through the side wall of the distribution hopper (5), and the material pushing assembly (7) further comprises a power member (76) for controlling the hinging rod (75) to move so as to control the material pushing plate (71) to rotate; the power member (76) comprises a mounting block (761) hingedly connected to an end of the hinging rod (75) away from the material pushing plate (71), the mounting block (761) is slidingly connected with an inclined outer side wall of the lower hopper (3) and slides along a height direction of the housing (1); The mounting block (761) is hingedly connected with a connecting rod (763), a lower end of the connecting rod (763) is hingedly connected with an inner bottom wall of the distribution hopper (5), and the mounting block (761) is connected with a limiting spring (762), one end of the limiting spring (762) away from the mounting block (761) is fixed to a position of an inclined side wall of the lower hopper (3) above the mounting block (761).

2. A vertical mill according to claim 1, characterized in that: The driving member (65) comprises a plurality of protrusions (651) fixed on the outer side wall of the distribution hopper (5), and a screw rod (652) corresponding to each of the protrusions (651), the screw rod (652) penetrating through the protrusion (651) and being threadedly connected with the protrusion (651), a motor (653) corresponding to each of the screw rods (652) and driving the screw rod (652) to rotate is further installed on the lower hopper (3), and the driving member (65) further comprises a controller, and the motor (653) is electrically connected with the controller.

3. A vertical mill according to claim 1, characterized in that: The lower end of the supporting rod (62) is rotationally connected with a ball (63), and the ball (63) is in rolling fit with the grinding disc (2).

4. A vertical mill according to claim 1, characterized in that: The outer side wall of the distribution hopper (5) is provided with a sliding groove (53) corresponding to each of the sliding blocks (711), the length direction of the sliding groove (53) is arranged along the height direction of the distribution hopper (5), and each of the sliding blocks (711) is slidingly inserted into the corresponding sliding groove (53).

5. A vertical mill according to claim 1, characterized in that: The inclined side wall of the lower hopper (3) is provided with a mounting groove (31) matched with the mounting block (761), and the mounting block (761) is slidingly inserted into the mounting groove (31).

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