Ore roller grinding equipment

Abstract

The invention discloses ore roller grinding equipment, and relates to the technical field of ore processing. The device comprises a material box, a feeding hole is formed in the top of the material box; a discharge hole is formed in the bottom of the material box; a pair of grinding rollers is rotationally connected between a pair of opposite side walls of the material box side by side; a driving mechanism passes through the two grinding rollers; the driving mechanism can drive the two grinding rollers to rotate reversely; a lifting mechanism is arranged above the feeding hole; a pair of pressing plates used for pressing ore in the feeding port is symmetrically arranged below the lifting mechanism. One edge of each of the two pressing plates is rotationally connected to the lifting mechanism; the two pressing plates are connected through an inclination angle adjusting mechanism; the inclination angle adjusting mechanism is arranged on the lifting mechanism. The ore roller grinding device is reasonable in structural design and convenient to use, and the ore roller grinding efficiency and effect are effectively improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of ore processing, and particularly relates to an ore roller grinding device. Background Art

[0002] Ores contain important metal resources, which can be applied in engineering fields such as the metallurgical industry, chemical industry, and construction industry after being processed by crushing, grinding, etc.

[0003] Chinese Patent with the authorization announcement number CN222132033U discloses a roller mill for ore crushing. In this device, the ore to be processed is conveyed through a feeding bin between two crushing rollers on both sides. The two crushing rollers are driven by the kinetic energy of two first motors on both sides to rotate in opposite directions to crush the ore by extrusion. The hydraulic cylinder moves downward to drive the first oil tank and the pressing plate downward, and the pressing plate presses the upper end of the ore to increase the pressure between the ore and the crushing rollers. The above device has the following drawbacks:

[0004] Since the crushing process of the ore is continuous, the unqualified crushed ore will be conveyed and fall into the feeding bin again, where it will accumulate on the upper surface of the pressing plate. When all the ore below the pressing plate has been crushed by extrusion, the pressing plate needs to move upward to perform the next ore pressing. When the pressing plate moves upward, it will drive the ore on it to move together, which may cause some ore to fail to be crushed, resulting in poor crushing effect of the ore. At the same time, as the ore accumulates on the pressing plate, it may cause the pressing plate to deform, which will also affect the use effect of parts such as the hydraulic cylinder. Therefore, it is urgent to study an ore roller grinding device to solve the above problems. Summary of the Invention

[0005] The present invention aims to provide an ore roller grinding device to solve the technical problems raised in the above background art.

[0006] To solve the above technical problems, the present invention is realized through the following technical solutions:

[0007] The present invention is an ore roller grinding device, including a material box; a feeding port is arranged at the top of the material box; a discharging port is arranged at the bottom of the material box; a pair of grinding rollers are rotatably connected in parallel between a pair of opposite side walls of the material box; a driving mechanism is arranged between the two grinding rollers; the driving mechanism can drive the two grinding rollers to rotate in opposite directions; a lifting mechanism is installed above the feeding port; a pair of pressing plates for pressing the ore in the feeding port are symmetrically arranged below the lifting mechanism; one edge of each of the two pressing plates is rotatably connected to the lifting mechanism; the two pressing plates are connected by an inclination angle adjusting mechanism; the inclination angle adjusting mechanism is installed on the lifting mechanism; the inclination angle adjusting mechanism can drive the pressing plates to rotate up and down.

[0008] As a preferred technical solution of the present invention, the upper edges of a pair of opposite side walls of the material box are both inclined and fixedly provided with first guide plates; the lower edges of the two first guide plates are both vertically fixedly provided with first baffles, and the lower edge of each first baffle is in sliding contact with the circumferential side walls of the two grinding rollers; the upper edges of the other pair of opposite side walls of the material box are both inclined and fixedly provided with second guide plates, and the opposite side edges of each second guide plate are respectively fixed on the two first guide plates; the lower edges of the two second guide plates are both vertically fixedly provided with second baffles, and the opposite side edges of each second baffle are respectively fixed on the two first baffles; the lower edges of the two second baffles are respectively in sliding contact with the circumferential side walls of the two grinding rollers; the space enclosed by the two first guide plates and the two second guide plates and the space enclosed by the two first baffles and the two second baffles are combined to form a feed inlet.

[0009] As a preferred technical solution of the present invention, the lower edges of a pair of opposite side walls of the material box are both inclined and fixedly provided with third guide plates, and the opposite side edges of each third guide plate are respectively fixed on the other pair of opposite side walls of the material box; the lower edges of the two third guide plates are both vertically fixedly provided with extension plates, and the opposite side edges of each extension plate are respectively fixed on the other pair of opposite side walls of the material box; a discharge outlet is formed between the extension plate and the other pair of opposite side walls of the material box.

[0010] As a preferred technical solution of the present invention, the driving mechanism includes a pair of gears respectively fixedly sleeved on one end of the two grinding rollers and a first motor with an output shaft coaxially fixed to the other end of one grinding roller; the two gears are meshed with each other; the first motor is horizontally fixed on the side wall of the material box.

[0011] As a preferred technical solution of the present invention, the lifting mechanism includes a load-bearing plate strip horizontally arranged above the material box; a pair of struts are vertically fixedly provided at both ends of the load-bearing plate strip; the lower ends of the two pairs of struts are respectively fixed on the two mounting blocks; the two mounting blocks are respectively fixed on a pair of opposite side walls of the material box; a pair of first hydraulic cylinders are vertically fixedly arranged side by side on the upper surface of the load-bearing plate strip; the output ends of the two first hydraulic cylinders both slide through the load-bearing plate strip, and the output ends of the two first hydraulic cylinders are both horizontally fixedly provided with transmission plate strips perpendicular to the load-bearing plate strip; the ends of the two transmission plate strips are connected by a pair of positioning plate strips parallel to the load-bearing plate strip; a connecting column is vertically fixedly provided at both ends of the two positioning plate strips, and the lower ends between the two connecting columns on the same end of the two positioning plate strips are connected by a rotating shaft perpendicular to the grinding roller; the two rotating shafts are respectively in rotational cooperation with the two pairs of connecting columns; the two rotating shafts are respectively fixedly inserted through one edge of the two pressing plates, and the two rotating shafts are arranged on the opposite outer sides of the two pressing plates.

[0012] As a preferred technical solution of the present invention, the inclination angle adjusting mechanism includes a pair of support plate strips fixed at both ends to two positioning plate strips respectively; a pair of second hydraulic cylinders are arranged side by side below the two support plate strips; the tails of the two pairs of second hydraulic cylinders are respectively rotatably connected to the two support plate strips; the output ends of the two pairs of second hydraulic cylinders are respectively rotatably connected to the two pressing plates.

[0013] As a preferred technical solution of the present invention, the two third material guide plates are connected by a filter plate in a "∧" structure; the two inclined surfaces of the filter plate are respectively arranged below the two grinding rollers; a plurality of filter holes are evenly distributed on the two inclined surfaces of the filter plate; a vibration motor is fixed between the two inclined surfaces of the filter plate.

[0014] As a preferred technical solution of the present invention, discharge holes are formed on the other two opposite side edges of the material box; the two discharge holes are arranged between the two third material guide plates, and the two discharge holes are respectively arranged at the lower edges of the two filter plates; support cylinders are coaxially fixed to the outer ports of the two discharge holes; a material return mechanism is connected to each of the two support cylinders; the material return mechanism includes a conveying cylinder with closed ends at both ends; a feeding cylinder is radially fixed to the side wall of the lower end of the conveying cylinder; the feeding cylinder is coaxially rotatably connected to the support cylinder; a discharging cylinder is radially fixed to the side wall of the upper end of the conveying cylinder; one end of the discharging cylinder away from the conveying cylinder is arranged above the feeding port; a second motor is fixed to the upper end of the conveying cylinder; an output shaft of the second motor is coaxially fixed with a spiral rod; the spiral rod is coaxially arranged inside the conveying cylinder.

[0015] As a preferred technical solution of the present invention, a pushing and pulling mechanism is connected to the conveying cylinder; the pushing and pulling mechanism includes a third hydraulic cylinder; the tail of the third hydraulic cylinder is rotatably connected to the side wall of the material box; the output end of the third hydraulic cylinder is rotatably connected to the circumferential side wall of the conveying cylinder.

[0016] The present invention has the following beneficial effects:

[0017] In the present invention, ore is put into the feed inlet, and the driving mechanism drives the two grinding rollers to rotate in opposite directions to achieve the grinding process of the ore. Then, the two pressing plates are adjusted to the horizontal state by the inclination adjusting mechanism, and then the lifting mechanism drives the two pressing plates to move downward synchronously, so as to press the ore in the feed inlet downward, thereby effectively improving the grinding efficiency of the ore. When the two pressing plates need to be reset after moving to the lowest set position, if ore falls onto the two pressing plates at this time, first the lifting mechanism drives the two pressing plates to move upward for a certain distance, and then the inclination adjusting mechanism drives the two pressing plates to tilt downward, so that the two pressing plates are distributed in an inverted "V" shape, realizing an increase in the gap between the two pressing plates. At this time, the ore on the two pressing plates falls from the gap between the two pressing plates to the lower part of the pressing plates, thus avoiding problems such as that some ore may not be able to be broken in the prior art, effectively ensuring the crushing effect of the ore, and at the same time ensuring the use stability of the entire equipment.

[0018] Of course, it is not necessary for any product implementing the present invention to achieve all the above-mentioned advantages simultaneously. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for describing the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0020] Figure 1 It is a schematic structural diagram of an ore roller mill device of the present invention.

[0021] Figure 2 For Figure 1 the main structural view.

[0022] Figure 3 For Figure 1 the side structural view.

[0023] Figure 4 It is a schematic structural diagram of the feed bin of the present invention.

[0024] Figure 5 It is a schematic structural diagram of the connection between the feed bin and the filter plate of the present invention.

[0025] Figure 6 It is a schematic structural diagram of the connection between the lifting mechanism and the inclination adjusting mechanism of the present invention.

[0026] Figure 7 It is a schematic structural diagram of the connection between the inclination adjusting mechanism and the pressing plate of the present invention.

[0027] Figure 8This is a schematic structural diagram of the material return mechanism of the present invention.

[0028] In the attached drawings, the list of components represented by each reference numeral is as follows:

[0029] 1 - material box, 2 - grinding roller, 3 - driving mechanism, 4 - lifting mechanism, 5 - pressing plate, 6 - inclination adjusting mechanism, 7 - filter plate, 8 - material return mechanism, 9 - pushing and pulling mechanism, 101 - feed inlet, 102 - discharge outlet, 103 - first guide plate, 104 - first baffle, 105 - second guide plate, 106 - second baffle, 107 - third guide plate, 108 - extension plate, 109 - discharge hole, 110 - support cylinder, 301 - gear, 302 - first motor, 401 - bearing plate strip, 402 - support column, 403 - mounting block, 404 - first hydraulic cylinder, 405 - transmission plate strip, 406 - positioning plate strip, 407 - connecting column, 408 - rotating shaft, 601 - support plate strip, 602 - second hydraulic cylinder, 701 - filter hole, 702 - vibration motor, 801 - conveying cylinder, 802 - feed cylinder, 803 - discharge cylinder, 804 - second motor, 805 - screw rod, 901 - third hydraulic cylinder. Specific embodiments

[0030] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0031] Embodiment 1:

[0032] Please refer to Figures 1-3As shown in the figure, the present invention is an ore roller grinding device, including a conventional feed bin 1 in the art; a feed inlet 101 is provided at the top of the feed bin 1; a discharge outlet 102 is provided at the bottom of the feed bin 1; a pair of conventional grinding rollers 2 in the art are rotatably connected in parallel between a pair of opposite side walls of the feed bin 1, that is, both ends of each grinding roller 2 are rotatably connected to a pair of opposite side walls of the feed bin 1; a driving mechanism 3 is provided between the two grinding rollers 2; the driving mechanism 3 can drive the two grinding rollers 2 to rotate in opposite directions; a grinding space for ore is formed between the two grinding rollers 2; a lifting mechanism 4 is installed above the feed inlet 101; a pair of pressing plates 5 for pressing the ore in the feed inlet 101 are symmetrically arranged below the lifting mechanism 4; the two pressing plates 5 are symmetrically arranged about the middle of the grinding roller 2; one edge of each of the two pressing plates 5 is rotatably connected to the lifting mechanism 4; the two pressing plates 5 are connected by an inclination angle adjusting mechanism 6; the inclination angle adjusting mechanism 6 is installed on the lifting mechanism 4; the inclination angle adjusting mechanism 6 can drive the pressing plates 5 to rotate up and down. During use, by putting ore into the feed inlet 101, the driving mechanism 3 is used to drive the two grinding rollers 2 to rotate in opposite directions to realize the grinding process of the ore. Then, the two pressing plates 5 are adjusted to a horizontal state by the inclination angle adjusting mechanism 6 (at this time, the gap between the two pressing plates 5 is difficult to pass through ore particles). Then, the lifting mechanism 4 is used to drive the two pressing plates 5 to move downward synchronously, so that the two pressing plates 5 press the ore in the feed inlet 101 downward, thereby effectively improving the grinding efficiency of the ore. When the two pressing plates 5 need to be reset after moving to the lowest set position, if there is ore falling on the two pressing plates 5 at this time, first, the lifting mechanism 4 is used to drive the two pressing plates 5 to move upward for a certain distance, and then the inclination angle adjusting mechanism 6 is used to drive the two pressing plates 5 to incline downward, so that the two pressing plates 5 are distributed in an inverted "V" shape, realizing the enlargement of the gap between the two pressing plates 5. At this time, the ore on the two pressing plates 5 falls from the gap between the two pressing plates 5 to the lower part of the pressing plates 5, thus avoiding problems such as partial ore that may not be broken in the prior art, effectively ensuring the crushing effect of the ore, and at the same time ensuring the use stability of the entire device.

[0033] Among them, such as Figures 4-5As shown in the figure, on the upper edges of a pair of opposite side walls of the bin 1, first guide plates 103 are inclined and welded; the two first guide plates 103 are distributed in an inverted "V" shape; on the lower edges of the two first guide plates 103, first baffles 104 are vertically welded, and the lower edge of each first baffle 104 is in sliding contact with the circumferential side walls of the two grinding rollers 2; on the upper edges of the other pair of opposite side walls of the bin 1, second guide plates 105 are inclined and welded, and the opposite sides of each second guide plate 105 are respectively welded to the two first guide plates 103; the two second guide plates 105 are distributed in an inverted "V" shape; on the lower edges of the two second guide plates 105, second baffles 106 are vertically welded, and the opposite sides of each second baffle 106 are respectively welded to the two first baffles 104; the lower edges of the two second baffles 106 are respectively in sliding contact with the circumferential side walls of the two grinding rollers 2; the space formed by the two first guide plates 103 and the two second guide plates 105 and the space formed by the two first baffles 104 and the two second baffles 106 are combined to form a feed inlet 101. During use, by designing that the space formed by the two first guide plates 103 and the two second guide plates 105 and the space formed by the two first baffles 104 and the two second baffles 106 are combined to form the feed inlet 101, the feeding amount of the ore can be effectively increased, and the grinding efficiency of the ore is ensured.

[0034] As shown in Figures 4-5 the figure, on the lower edges of a pair of opposite side walls of the bin 1, third guide plates 107 are inclined and welded, and the opposite sides of each third guide plate 107 are respectively welded to the other pair of opposite side walls of the bin 1; the two third guide plates 107 are distributed in an inverted "V" shape; on the lower edges of the two third guide plates 107, extension plates 108 are vertically welded, and the opposite sides of each extension plate 108 are respectively welded to the other pair of opposite side walls of the bin 1; a discharge outlet 102 is formed between the extension plate 108 and the other pair of opposite side walls of the bin 1. During use, by designing the third guide plates 107 distributed in an inverted "V" shape, it is convenient for the ore powder to fall into the discharge outlet 102, and the collection efficiency of the ore powder is ensured.

[0035] As shown in Figure 2 the figure, the driving mechanism 3 includes a pair of gears 301 respectively key-connected to one ends of the two grinding rollers 2 and a first motor 302 whose output shaft is coaxially fixed to the other end of one grinding roller 2; the two gears 301 are meshed with each other; the first motor 302 is horizontally bolted to the side wall of the bin 1. During use, the first motor 302 drives one grinding roller 2 to rotate, and the two grinding rollers 2 are synchronously rotated in opposite directions through the two gears 301, effectively ensuring the grinding efficiency of the ore.

[0036] Embodiment 2:

[0037] On the basis of Embodiment 1, as shown in Figures 2-3 and Figures 6-7As shown in the figure, the lifting mechanism 4 includes a bearing strip 401 horizontally arranged above the material box 1; a pair of support columns 402 are vertically bolted to both ends of the bearing strip 401; the bearing strip 401 is arranged in parallel with the grinding roller 2; the lower ends of the two pairs of support columns 402 are respectively bolted to two mounting blocks 403; the two mounting blocks 403 are respectively bolted to a pair of opposite side walls of the material box 1; a pair of conventional first hydraulic cylinders 404 in the art are vertically bolted side by side on the upper surface of the bearing strip 401; the output ends of the two first hydraulic cylinders 404 both slide through the bearing strip 401, and the output ends of the two first hydraulic cylinders 404 are both horizontally bolted with a transmission strip 405 perpendicular to the bearing strip 401; the ends of the two transmission strips 405 are connected by a pair of positioning strips 406 parallel to the bearing strip 401, and the positioning strip 406 and the transmission strip 405 are connected by welding; a connecting column 407 is vertically bolted to both ends of the two positioning strips 406, and the lower ends of the two connecting columns 407 on the two positioning strips 406 facing the same end are connected by a rotating shaft 408 perpendicular to the grinding roller 2; the two rotating shafts 408 are respectively rotationally matched with the two pairs of connecting columns 407; the two rotating shafts 408 are respectively fixedly inserted into one edge of the two pressing plates 5 (the length direction of the rotating shaft 408 is parallel to the length direction of this edge of the pressing plate 5), and the two rotating shafts 408 are arranged on the opposite outer sides of the two pressing plates 5; the inclination angle adjusting mechanism 6 includes a pair of support strips 601 welded to both ends of the two positioning strips 406 respectively; a pair of conventional second hydraulic cylinders 602 in the art are arranged side by side below the two support strips 601; the tails of the two pairs of second hydraulic cylinders 602 are respectively rotationally connected to the two support strips 601; the output ends of the two pairs of second hydraulic cylinders 602 are respectively rotationally connected to the two pressing plates 5; when the pressing plates 5 are horizontally arranged, the two pairs of second hydraulic cylinders 602 are distributed in an inverted "V" shape. During use, when the pressing plates 5 are driven by the second hydraulic cylinders 602 to adjust to the horizontal state (at this time, the gap between the two pressing plates 5 is difficult to pass through ore particles), and the size area formed by the two pressing plates 5 is slightly smaller than the space enclosed by the two first baffles 104 and the two second baffles 106, then the pressing plates 5 are driven by the first hydraulic cylinders 404 to move downward, so that the two pressing plates 5 press the ore in the feed port 101 downward, thereby effectively improving the grinding efficiency of the ore. When the two pressing plates 5 need to be reset after moving to the lowest set position, if there is ore falling on the two pressing plates 5 at this time, first the two pressing plates 5 are driven by the first hydraulic cylinders 404 to move upward for a certain distance, and then the two pressing plates 5 are driven by the second hydraulic cylinders 602 to tilt downward, so that the two pressing plates 5 are distributed in an inverted "V" shape, realizing the enlargement of the gap between the two pressing plates 5. At this time, the ore on the two pressing plates 5 falls from the gap between the two pressing plates 5 to the lower part of the pressing plates 5, thus avoiding problems such as that some ore may not be able to be broken in the prior art, and effectively ensuring the crushing effect of the ore.

[0038] Embodiment 2:

[0039] Based on Embodiment III, as Figures 2-5 and Figure 8As shown in the figure, two third material guiding plates 107 are connected by a filter plate 7 with a "∧"-shaped structure; the edge of the filter plate 7 is bolted to the third material guiding plate 107; the two inclined surfaces of the filter plate 7 are respectively arranged below the two grinding rollers 2; a plurality of filter holes 701 are evenly distributed on the two inclined surfaces of the filter plate 7; a conventional vibration motor 702 in the art is bolted between the two inclined surfaces of the filter plate 7; circular discharge holes 109 are formed in the other two opposite sides of the material box 1; the two discharge holes 109 are arranged between the two third material guiding plates 107, and the two discharge holes 109 are respectively arranged at the lower edges of the two filter plates 7; support cylinders 110 are coaxially welded to the outer ports of the two discharge holes 109; a material return mechanism 8 is connected to each of the two support cylinders 110; the material return mechanism 8 includes a conveying cylinder 801 with closed ends at both ends; a feeding cylinder 802 is radially welded to the side wall of the lower end of the conveying cylinder 801; the feeding cylinder 802 is coaxially rotatably connected to the support cylinder 110; a discharging cylinder 803 is radially welded to the side wall of the upper end of the conveying cylinder 801; one end of the discharging cylinder 803 away from the conveying cylinder 801 is arranged above the feeding port 101; a second motor 804 is bolted to the upper end of the conveying cylinder 801; a conventional screw rod 805 in the art is coaxially fixed to the output shaft of the second motor 804; the screw rod 805 is coaxially arranged inside the conveying cylinder 801; a pushing and pulling mechanism 9 is connected to the conveying cylinder 801; the pushing and pulling mechanism 9 includes a conventional third hydraulic cylinder 901 in the art; the tail end of the third hydraulic cylinder 901 is rotatably connected to the side wall of the material box 1; the output end of the third hydraulic cylinder 901 is rotatably connected to the circumferential side wall of the conveying cylinder 801; when the conveying cylinder 801 is in a vertical state, the third hydraulic cylinder 901 is inclined, and the tail end of the third hydraulic cylinder 901 is arranged above its output end. During use, by designing the filter plate 7 with a "∧"-shaped structure, and arranging the two inclined surfaces of the filter plate 7 below the two grinding rollers 2 respectively, and then bolting the vibration motor 702 between the two inclined surfaces of the filter plate 7, the filtering effect of the filter plate 7 can be effectively improved. At the same time, the two discharge holes 109 are respectively arranged at the lower edges of the two filter plates 7, so that the ore that fails to be filtered on the filter plate 7 can be conveniently concentrated and discharged into the discharge holes 109, thus avoiding problems such as ore accumulation on the filter plate 7; when the ore that fails to be filtered on the filter plate 7 is transported to the conveying cylinder 801 through the discharge holes 109, the support cylinders 110 and the feeding cylinder 802, and then the ore is transported by the screw rod 805 and re-discharged into the feeding port 101 from the discharging cylinder 803. At the same time, the third hydraulic cylinder 901 drives the conveying cylinder 801 to swing left and right on the side of the material box 1, so that the ore discharged from the discharging cylinder 803 can be evenly scattered into the feeding port 101, which can avoid problems such as ore accumulation or over-concentration, effectively ensuring the crushing efficiency and effect of the ore, and also avoiding problems such as uneven force on the pressing plate 5 caused by ore accumulation or over-concentration on the pressing plate 5.

[0040] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific embodiments described. Obviously, many modifications and variations can be made according to the content of this specification. These embodiments are selected and specifically described in this specification to better explain the principles and practical applications of the present invention, so that those skilled in the art can well understand and utilize the present invention. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. An ore roller mill, comprising a material box (1); a material inlet (101) is arranged at the top of the material box (1); a material outlet (102) is arranged at the bottom of the material box (1); characterized in that: A pair of grinding rollers (2) are rotatably connected side by side between opposite side walls of the material box (1); a driving mechanism (3) is provided between the two grinding rollers (2); the driving mechanism (3) can drive the two grinding rollers (2) to rotate in opposite directions; A lifting mechanism (4) is installed above the feed port (101); a pair of pressing plates (5) for pressing the ore in the feed port (101) are symmetrically arranged below the lifting mechanism (4); one edge of the two pressing plates (5) is rotatably connected to the lifting mechanism (4); the two pressing plates (5) are connected via an inclination adjustment mechanism (6); the inclination adjustment mechanism (6) is installed on the lifting mechanism (4); the inclination adjustment mechanism (6) can drive the pressing plates (5) to rotate up and down.

2. The ore roller mill according to claim 1, characterized in that: A first material guide plate (103) is fixed obliquely to the upper edge of one opposite side wall of the material box (1); a first baffle plate (104) is fixed vertically to the lower edge of the two first material guide plates (103), and the lower edge of each first baffle plate (104) is in sliding contact with the circumferential side walls of the two grinding rollers (2); a second material guide plate (105) is fixed obliquely to the upper edge of the other opposite side wall of the material box (1), and the opposite side edges of each second material guide plate (105) are respectively fixed to the two first material guide plates (103). The lower edges of the two second material guide plates (105) are vertically fixed with second baffles (106), and the opposite sides of each second baffle (106) are respectively fixed on the two first baffles (104); the lower edges of the two second baffles (106) are respectively in sliding contact with the circumferential side walls of the two grinding rollers (2); the space enclosed by the two first material guide plates (103) and the two second material guide plates (105) and the space enclosed by the two first baffles (104) and the two second baffles (106) are combined to form a feed port (101).

3. The ore roller mill according to claim 2, characterized in that: A third material guide plate (107) is obliquely fixed to the lower edge of one opposite side wall of the material box (1), and the opposite side edge of each third material guide plate (107) is respectively fixed to the other opposite side wall of the material box (1); an extension plate (108) is vertically fixed to the lower edge of the two third material guide plates (107), and the opposite side edge of each extension plate (108) is respectively fixed to the other opposite side wall of the material box (1); a discharge port (102) is formed between the extension plate (108) and the other opposite side wall of the material box (1).

4. An ore roller mill according to claim 2 or 3, characterized in that: The driving mechanism (3) comprises a pair of gears (301) respectively fixedly mounted on one end of the two grinding rollers (2) and a first motor (302) whose output shaft is coaxially fixed to the other end of one grinding roller (2); the two gears (301) are meshed with each other; and the first motor (302) is horizontally fixed to the side wall of the material box (1).

5. The ore roller mill according to claim 4, characterized in that: The lifting mechanism (4) comprises a load-bearing strip (401) horizontally arranged above the material box (1); a pair of pillars (402) are vertically fixed to both ends of the load-bearing strip (401); the lower ends of the two pairs of pillars (402) are respectively fixed to two mounting blocks (403); the two mounting blocks (403) are respectively fixed to opposite side walls of the material box (1); a pair of first hydraulic cylinders (404) are vertically fixed side by side on the upper surface of the load-bearing strip (401); the output ends of the two first hydraulic cylinders (404) both slide through the load-bearing strip (401), and the output ends of the two first hydraulic cylinders (404) are horizontally fixed with transmission elements perpendicular to the load-bearing strip (401); The driving strips (405) are connected at their ends by a pair of positioning strips (406) parallel to the load-bearing strips (401); connecting posts (407) are vertically fixed at both ends of the two positioning strips (406), and the lower ends of the two connecting posts (407) on the same ends of the two positioning strips (406) are connected by a rotating shaft (408) perpendicular to the grinding roller (2); the two rotating shafts (408) are respectively rotatably matched with the two pairs of connecting posts (407); the two rotating shafts (408) are respectively fixed and inserted on one edge of the two pressure plates (5), and the two rotating shafts (408) are arranged on the relatively outer sides of the two pressure plates (5).

6. The ore roller mill according to claim 5, characterized in that: The tilt angle adjustment mechanism (6) comprises a pair of supporting slats (601) whose two ends are respectively fixed on two positioning slats (406); a pair of second hydraulic cylinders (602) are arranged side by side below the two supporting slats (601); the tail ends of the two pairs of the second hydraulic cylinders (602) are respectively rotatably connected to the two supporting slats (601); and the output ends of the two pairs of the second hydraulic cylinders (602) are respectively rotatably connected to the two pressure plates (5).

7. The ore roller mill according to claim 3, characterized in that: The two third material guide plates (107) are connected via a filter plate (7) with a "∧"-shaped structure; the two inclined surfaces of the filter plate (7) are respectively arranged below the two grinding rollers (2); the two inclined surfaces of the filter plate (7) are evenly distributed with a plurality of filter holes (701); and a vibration motor (702) is fixed between the two inclined surfaces of the filter plate (7).

8. The ore roller mill according to claim 7, characterized in that: The other two opposite sides of the material box (1) are each provided with a discharge hole (109); the two discharge holes (109) are arranged between the two third material guide plates (107), and the two discharge holes (109) are respectively arranged at the lower edges of the two filter plates (7); the outer ends of the two discharge holes (109) are both coaxially fixed with a support tube (110); and the two support tubes (110) are both connected to a material return mechanism (8).

9. The ore roller mill according to claim 8, characterized in that: The material return mechanism (8) comprises a conveying cylinder (801) with closed structures at both ends; a feed cylinder (802) is radially fixed to the side wall of the lower end of the conveying cylinder (801); the feed cylinder (802) is coaxially rotatably connected to the support cylinder (110); a discharge cylinder (803) is radially fixed to the side wall of the upper end of the conveying cylinder (801); a port of the discharge cylinder (803) away from the conveying cylinder (801) is arranged above the feed port (101); a second motor (804) is fixed to the upper end of the conveying cylinder (801); a screw rod (805) is coaxially fixed to the output shaft of the second motor (804); and the screw rod (805) is coaxially arranged inside the conveying cylinder (801).

10. The ore roller mill according to claim 9, characterized in that: The conveying cylinder (801) is connected to a push-pull mechanism (9); the push-pull mechanism (9) comprises a third hydraulic cylinder (901); the tail end of the third hydraulic cylinder (901) is rotatably connected to the side wall of the material box (1); the output end of the third hydraulic cylinder (901) is rotatably connected to the circumferential side wall of the conveying cylinder (801).

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