Double-layer grate plate type ball mill

Abstract

The utility model discloses a double-layer grate plate type ball mill, which belongs to the technical field of comprehensive utilization of red mud and comprises a supporting bottom plate, one side above the supporting bottom plate is rotatably connected with a bottom plate through a bearing shaft, the other side above the supporting bottom plate is rotatably connected with a hydraulic supporting column, and the telescopic end of the hydraulic supporting column is rotatably connected with the bottom plate. And a guide chute is mounted above the supporting bottom plate and positioned on the side of the bearing shaft through a bracket. According to the utility model, materials enter the roller consisting of the outer grid plate through the guide groove, the grinding body with the diameter of more than 8cm is in contact with the materials to primarily crush the materials, and the crushed materials fall onto the lining plate in the roller of the ball mill through the holes in the lining grid plate and the outer grid plate; the grinding body with the diameter smaller than 8 cm makes contact with the materials again, compared with the design of an existing ball mill and a double-layer grid plate, the large-diameter grinding body can crush the materials, the small-diameter grinding body finely grinds the materials, and the ball milling efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the comprehensive utilization technical field of red mud, specifically a double layer grate plate formula ball mill. BACKGROUND

[0002] Red mud is also called red mud, which is an industrial solid waste discharged after extracting alumina from bauxite. It generally contains a large amount of iron oxide and looks like red soil, so it is named. However, some of them are brown or even gray due to the low content of iron oxide. Red mud is an insoluble residue, which can be divided into sintered red mud, Bayer red mud and combined red mud. The main components are SiO2, Al2O3, CaO, Fe2O3, etc.

[0003] When red mud is treated by dry method, it needs to be compressed and filtered, mixed, then roasted by rotary kiln, and finally heat exchanged, ground and selected, and magnetically selected to finally recover iron materials in red mud. The tailings can be used as building materials.

[0004] When grinding and selecting a large amount of red mud, a ball mill is generally used. The working principle of the ball mill is realized by a horizontally placed rotary cylinder. The cylinder is filled with grinding bodies. These grinding bodies rotate with the cylinder under the action of centrifugal force and friction. When the cylinder rotates at high speed, the centrifugal force drives the grinding bodies and the material to rise, and under the action of gravity, the grinding bodies and the material fall freely, impacting and grinding the material. When the cylinder rotates at low speed, the grinding bodies mainly slide and roll to further grind the material.

[0005] In ball mill production, in order to increase the quality of ball milling, the grinding bodies used for auxiliary grinding are generally cast iron balls with different diameters, which reduce the gap between the balls and are only used to obtain roasted materials that are more convenient for magnetic separation. The characteristic of red mud roasted material is high brittleness. If different diameter grinding bodies are placed together, the auxiliary grinding effect cannot be fully played, and the grinding time is increased. Therefore, the existing ball mill is improved, and a ball mill with grate plate is designed according to the characteristics of the roasted material. UTILITY MODEL CONTENTS

[0006] The utility model aims at: in order to solve the above -mentioned problem, provide a kind of double layer grate plate formula ball mill.

[0007] The technical scheme adopted by the utility model is as follows: a double layer grate plate formula ball mill, including support base plate, the support base plate upper side is rotationally connected with bottom plate by bearing shaft, the support base plate upper side is rotationally connected with hydraulic support column, and the telescopic end of hydraulic support column is rotationally connected with bottom plate, the support base plate upper side is equipped with guide chute by support and is located on the side of bearing shaft;

[0008] The shaft neck support is integrally arranged on one side above the bottom plate, a supporting wheel is rotationally connected to the other side above the bottom plate, a driving gear is rotationally installed on the other side above the bottom plate through a support, a ball mill roller is movably connected above the supporting wheel, a rolling ring is integrally arranged on one side of the surface of the ball mill roller, a gear ring is integrally arranged on the other side of the surface of the ball mill roller, a roller shaft neck extends from one side end surface of the ball mill roller, and a lining plate is fixedly installed inside the ball mill roller through bolts.

[0009] The double-layer grating plate assembly is movably connected inside the ball mill roller and can ball mill materials.

[0010] The double-layer grating plate assembly comprises a limiting plate, a connecting frame, an outer grating plate, a connecting lug, an inner lining grating plate and a mounting groove.

[0011] The limiting plate is movably connected to the other end surface of the ball mill roller, the connecting frame extends around the limiting plate, the mounting groove is integrally arranged on the inner surface of the limiting plate, the outer grating plate is movably connected inside the mounting groove through a sliding block, the connecting lug extends from the side of the outer grating plate, the inner lining grating plate is movably connected to the inner wall of the outer grating plate, the number of the mounting grooves is four, the mounting grooves are arranged in an array with the center of the limiting plate as a center point, and the locking bolt is arranged between the sliding block of the outer grating plate and the mounting groove, the outer grating plate is arranged in a quarter-cylindrical shape, the connecting lugs on the four outer grating plates are connected to each other, and the bolt connection hole is reserved on the surface of the connecting lug.

[0012] The end surface of the ball mill roller is provided with notches that match the connecting frames, the number of the notches and the connecting frames is at least six, and the notches and the connecting frames are fixed through bolts, the annular grooves extend around the roller shaft neck inside the ball mill roller, and the outer grating plate and the annular grooves movably match.

[0013] The inner lining grating plate is made of cast iron and connected to the outer grating plate through fasteners, and the plurality of inner lining grating plates are connected in a concave-convex engagement.

[0014] The roller shaft neck penetrates and extends through the shaft neck support, the rolling ring and the supporting wheel match and support each other, and the gear ring and the driving gear are engaged.

[0015] As the above technical solutions are adopted, the beneficial effects of the present application are as follows:

[0016] 1. In the utility model, material enters into the drum composed of outer grate plate through guide chute, grinding body with diameter above 8CM contacts with material, and primary crushing is carried out on material, the material after crushing falls on the lining plate in the ball mill drum through the hole on inner lining grate plate and outer grate plate, grinding body with diameter below 8CM contacts with material again, and fine ball milling is carried out on material, compared with the existing ball mill, the design of double-layer grate plate, large-diameter grinding body can crush material, and small-diameter grinding body can finely grind material, increasing the efficiency of ball milling.

[0017] 2. In the utility model, the inner lining grate plate and the inner wall of the outer grate plate are connected through fasteners, then the outer grate plate with the installed inner lining grate plate is slid along the installation groove, so that four outer grate plates form a cylindrical structure, the design of replaceable inner lining grate plate is practical, the use durability of the device is increased, and maintenance and replacement are facilitated. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is an overall side sectional structure schematic diagram of the utility model;

[0019] Figure 2 It is a local three-dimensional structure schematic diagram of the limiting plate in the utility model;

[0020] Figure 3 It is a cross-sectional structure schematic diagram of the limiting plate in the utility model;

[0021] Figure 4 It is a local three-dimensional structure schematic diagram of the limiting plate;

[0022] Figure 5 It is a three-dimensional structure schematic diagram of the inner lining grate plate in the utility model;

[0023] Figure 6 It is a three-dimensional structure schematic diagram of the inner lining grate plate in the utility model Figure 5 It is an enlarged structure schematic diagram of position A in the utility model.

[0024] Mark in the drawing: 1, support bottom plate; 101, guide chute; 102, bearing shaft; 103, hydraulic support column; 2, bottom plate; 201, journal support; 202, carrier wheel; 203, driving gear; 3, ball mill drum; 301, rolling ring; 302, gear ring; 303, drum journal; 4, lining plate; 5, limiting plate; 501, connecting frame; 502, outer grate plate; 5021, connecting lug; 503, inner lining grate plate; 6, installation groove. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0026] In the utility model,

[0027] Referring to Figures 1-6 A double-deck grate type ball mill, including support base plate 1, the upper side of support base plate 1 is rotatably connected with base plate 2 through bearing shaft 102, the other side of support base plate 1 is rotatably connected with hydraulic support column 103, and the telescopic end of hydraulic support column 103 is rotatably connected with base plate 2, and the side of support base plate 1 located above bearing shaft 102 is provided with guide chute 101 through support;

[0028] The upper side of base plate 2 is integrally provided with journal support 201, the other side of base plate 2 located above journal support 201 is rotatably connected with carrier roller 202, the other side of base plate 2 located above carrier roller 202 is rotatably installed with driving gear 203 through support, carrier roller 202 is movably connected with ball mill roller 3, the side of the surface of ball mill roller 3 is integrally provided with rolling ring 301, the other side of the surface of ball mill roller 3 is integrally provided with gear ring 302, the side end surface of ball mill roller 3 extends roller journal 303, liner plate 4 is fixedly installed in ball mill roller 3 through bolt, roller journal 303 penetrates and extends journal support 201, rolling ring 301 is supported between carrier roller 202, gear ring 302 is connected between driving gear 203, driving gear 203 is driven to rotate by motor, in turn, gear ring 302 drives ball mill roller 3 to rotate, carrier roller 202 cooperates with rolling ring 301 to ensure the rotation of ball mill roller 3, and then the material enters the roller composed of outer grate 502 through guide chute 101, and the grinding body with a diameter of more than 8CM contacts with the material;

[0029] Ball mill roller 3 is movably connected with double-deck grate assembly which can ball mill the material;

[0030] The double-deck grate assembly includes limiting plate 5, connecting frame 501, outer grate 502, connecting lug 5021, inner lining grate 503 and mounting groove 6.

[0031] The other end surface of the ball mill drum 3 is movably connected with a limiting plate 5, a connecting frame 501 extends around the limiting plate 5, an installation groove 6 is integrally arranged on the inner surface of the limiting plate 5, an outer grate plate 502 is movably connected inside the installation groove 6, a connecting lug 5021 extends along the side of the outer grate plate 502, an inner lining grate plate 503 is movably connected to the inner wall of the outer grate plate 502, the material of the inner lining grate plate 503 is cast iron, the number of the inner lining grate plate 503 is several, the inner lining grate plate 503 is connected with the outer grate plate 502 through fasteners, and the plurality of inner lining grate plates 503 are connected in concave-convex engagement, the concave-convex engagement can increase the stability of the engagement of the inner lining grate plate 503, and the cast iron material is more wear-resistant.

[0032] Further, the end surface of the ball mill drum 3 is provided with notches that fit the connecting frame 501, the number of notches and connecting frames 501 is at least 6, and the notches and connecting frames 501 are fixed by bolts, an annular groove extends around the drum shaft neck 303 inside the ball mill drum 3, the outer grate plate 502 and the annular groove are movably fitted, the outer grate plate 502 is inserted into the ball mill drum 3, at this time, the outer grate plate 502 is fitted with the annular groove inside the ball mill drum 3, and the notches provided on the end surface of the ball mill drum 3 are connected with the connecting frame 501 by bolts to fix the limiting plate 5.

[0033] Further, the number of installation grooves 6 is four, which are arranged in an array with the center of the limiting plate 5 as the center point, and lock bolts are arranged between the sliding blocks of the outer grate plate 502 and the installation grooves 6, the outer grate plate 502 can be slid away by the installation groove 6, thereby making it more convenient to replace the inner lining grate plate 503.

[0034] Further, the outer grate plate 502 is arranged in a quarter-cylinder shape, the connecting lugs 5021 on the four outer grate plates 502 are connected to each other, and the surface of the connecting lug 5021 is reserved with bolt connection holes, the outer grate plate 502 with the installed inner lining grate plate 503 is slid along the installation groove 6, so that the four outer grate plates 502 form a cylindrical structure, and then the reserved holes on the connecting lug 5021 are connected by bolts.

[0035] Further, a driving motor is installed above the bottom plate 2, the output shaft of the driving motor is connected with the driving gear 203, the driving motor is electrically connected with an external power supply, and the hydraulic support column 103 is connected with an external hydraulic pump station, the extension and retraction of the hydraulic support column 103 can adjust the levelness of the bottom plate 2.

[0036] Working principle: first, the inner lining grate 503 layer is stacked and engaged, then the inner lining grate 503 is connected with the inner wall of the outer grate 502 through fasteners, then the outer grate 502 with the inner lining grate 503 is slid along the installation slot 6, so that the four outer grates 502 form a cylindrical structure, then the four outer grates 502 are fixed by connecting the reserved holes on the connecting lug 5021 with bolts, at this time the outer grate 502 is inserted into the ball mill drum 3, at this time the outer grate 502 is engaged with the annular groove inside the ball mill drum 3, then the ball mill drum 3 end face is connected with the connecting frame 501 by using bolts, the limiting plate 5 is fixed, at this time the grinding body with a diameter of more than 8CM is put into the drum composed of the outer grate 502, the grinding body with a diameter of less than 8CM is put into the ball mill drum 3, at this time the motor drives the driving gear 203 to rotate, and then the ball mill drum 3 is driven to rotate by the driving gear 302, the supporting wheel 202 cooperates with the rolling ring 301 to ensure the rotation of the ball mill drum 3, then the material enters the drum composed of the outer grate 502 through the material guide groove 101, the grinding body with a diameter of more than 8CM contacts the material to crush the material for the first time, the crushed material falls on the liner 4 in the ball mill drum 3 through the holes in the inner lining grate 503 and the outer grate 502, the grinding body with a diameter of less than 8CM contacts the material again to finely grind the material, compared with the existing ball mill, the design of double-layer grate plate, large-diameter grinding body can crush the material, small-diameter grinding body can finely grind the material, increase the efficiency of ball milling, and the design of replaceable inner lining grate 503 increases the service life of the device and facilitates maintenance and replacement.

[0037] The above only describes the preferred embodiments of the present application, and is not intended to limit the present application, any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A double-deck grate-type ball mill comprising a support bottom plate (1), characterized in that: The support bottom plate (1) is rotatably connected with a bottom plate (2) on one side thereof through a bearing shaft (102), and is rotatably connected with a hydraulic support column (103) on the other side thereof, and the telescopic end of the hydraulic support column (103) is rotatably connected with the bottom plate (2); a material guide groove (101) is mounted on the support bottom plate (1) on the side of the bearing shaft (102) through a support; An axle neck support (201) is integrally arranged on one side of the top of the bottom plate (2); a supporting wheel (202) is rotatably connected with the other side of the top of the bottom plate (2) on the other side of the axle neck support (201); a driving gear (203) is rotatably mounted on the other side of the supporting wheel (202) on the top of the bottom plate (2) through a support; a ball mill roller (3) is movably connected with the top of the supporting wheel (202); a rolling ring (301) is integrally arranged on one side of the surface of the ball mill roller (3); a gear ring (302) is integrally arranged on the other side of the surface of the ball mill roller (3); a roller axle neck (303) extends from one side end surface of the ball mill roller (3); a lining plate (4) is fixedly mounted in the ball mill roller (3) through bolts; The ball mill roller (3) is movably connected with a double-layer grating plate assembly which can ball mill materials; The double-layer grating plate assembly comprises a limiting plate (5), a connecting frame (501), an outer grating plate (502), a connecting lug (5021), an inner lining grating plate (503) and a mounting groove (6); The other end surface of the ball mill roller (3) is movably connected with the limiting plate (5); the connecting frame (501) extends around the limiting plate (5); the mounting groove (6) is integrally arranged on the inner surface of the limiting plate (5); the outer grating plate (502) is movably connected in the mounting groove (6) through a sliding block; the connecting lug (5021) extends from one side of the outer grating plate (502); and the inner lining grating plate (503) is movably connected with the inner wall of the outer grating plate (502).

2. A double-deck grate-type ball mill as claimed in claim 1, characterized in that: The ball mill roller (3) is provided with notches which are matched with the connecting frames (501) on the end surfaces thereof; the number of the notches and the connecting frames (501) is at least six; and the notches and the connecting frames (501) are fixedly connected through bolts.

3. A double-deck grate-type ball mill as claimed in claim 1, characterized in that: The number of the mounting grooves (6) is four; the mounting grooves (6) are arranged in an array with the center of the limiting plate (5) as a center point; and locking bolts are arranged between the sliding blocks of the outer grating plates (502) and the mounting grooves (6).

4. A double-deck grate-type ball mill as claimed in claim 1, characterized in that: The outer grating plates (502) are arranged in a quarter-cylinder shape; the connecting lugs (5021) on the four outer grating plates (502) are connected with each other; and bolt connection holes are reserved on the surfaces of the connecting lugs (5021).

5. A double-deck grate-type ball mill as claimed in claim 1, characterized in that: The inner lining grating plates (503) are made of cast iron; the number of the inner lining grating plates (503) is several; the inner lining grating plates (503) are connected with the outer grating plates (502) through fasteners; and the plurality of inner lining grating plates (503) are connected in a concave-convex engagement mode.

6. A double-deck grate-type ball mill as claimed in claim 1, characterized in that: An annular groove extends around the roller axle neck (303) in the ball mill roller (3); and the outer grating plates (502) are movably matched with the annular groove.

7. A double-deck grate-type ball mill as claimed in claim 1, characterized in that: The drum shaft journal (303) penetrates and extends through the journal support (201), and the race (301) is supported between the carrier wheel (202), and the gear ring (302) is connected between the driving gear (203).

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