Mine filling cementing powder filling material grinding device

Abstract

The utility model discloses a mine filling cementing powder filling material grinding device, and relates to the technical field of grinding devices, the mine filling cementing powder filling material grinding device comprises a ball milling assembly and a discharging assembly, the ball milling assembly comprises a supporting underframe, a front roller and a rear roller, and the discharging assembly comprises a middle roller, an annular groove, a loading and unloading port, a plugging plate, a fixing unit, a locking unit and a guiding unit; the fixing unit is used for connecting and fixing the middle roller and the rear roller; the locking unit is used for locking the position of the middle roller when the middle roller and the rear roller are not fixed, and the guiding unit is used for guiding grinding bodies on the inner sides of the front roller and the rear roller to roll to the area of the middle roller. By arranging the discharging assembly, efficient discharging operation of the grinding body can be achieved, compared with a traditional structure that a loading and unloading opening runs circumferentially, the structure that the middle roller and the loading and unloading opening keep still enables the grinding body to be discharged continuously, the discharging efficiency is higher, and the replacement efficiency of the grinding body is further improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a powder grinding device technical field, specifically a mine filling glue solid powder filling material powder grinding device. BACKGROUND

[0002] Glue solid powder is a new type of cementing material used for filling underground or mine, which uses tailings as aggregate and cement as cementing agent. Glue solid powder has the advantages of low water, strong natural water reducing property, high density, fast water absorption speed, good viscosity and strong water resistance, and is widely used in mine filling, underground grouting, road construction and other fields.

[0003] The production process of glue solid powder generally includes: raw material preparation, drying to remove water in the raw material, raw material grinding (including coarse grinding and fine grinding), raw material mixing and other processes.

[0004] Among them, the ball mill is one of the commonly used equipment for grinding glue solid powder raw materials. The ball mill is a key equipment for further crushing after material crushing, and its working principle is as follows:

[0005] The ball mill is composed of a horizontal cylinder, an inlet and outlet hollow shaft and a grinding head. The cylinder is a long cylinder, and the grinding body is installed in the cylinder. The grinding body is generally a steel ball, and a steel segment can also be used. The grinding body is loaded into the cylinder according to different diameters and certain proportions. The material is loaded into the cylinder through the inlet and outlet hollow shaft of the ball mill. When the cylinder of the ball mill rotates, the grinding body is attached to the cylinder liner due to the action of inertia and centrifugal force and friction, and is taken away by the cylinder. When it is taken to a certain height, it is thrown off due to its own gravity, and the falling grinding body breaks the material in the cylinder like a projectile.

[0006] In the actual production process of glue solid powder, the grinding body in the ball mill needs to be replaced regularly. The existing ball mill has a grinding body loading and unloading opening on the cylinder. When the grinding body needs to be replaced, the blocking piece of the loading and unloading opening is removed, and the ball mill is rotated to make the grinding body fall out of the loading and unloading opening. However, during this process, the loading and unloading opening rotates in a circle, causing the grinding body to be unloaded intermittently, and the overall unloading time is long. Therefore, a mine filling glue solid powder filling material powder grinding device is provided. UTILITY MODEL CONTENTS

[0007] The utility model aims at solving the problems in the above background, and provides a mine filling glue solid powder filling material powder grinding device.

[0008] To achieve the above purpose, the utility model provides the following technical scheme: a mine filling glue solid powder filling material powder grinding device, which comprises a ball mill assembly, the ball mill assembly comprises a supporting chassis, a front roller and a rear roller, the front roller and the rear roller are symmetrically rotatably installed at the top of both ends of the supporting chassis.

[0009] The intermediate region of the front roller and the rear roller is provided with a discharging assembly, the discharging assembly comprises a middle roller, an annular groove, a loading and unloading port, a sealing plate, a fixing unit, a locking unit and a guiding unit;

[0010] The annular groove is symmetrically formed in the inner side of the two ends of the middle roller, the middle roller is distributed in the middle of the front roller and the rear roller and is rotationally sleeved with the front roller and the rear roller through the annular groove, and the front roller, the middle roller and the rear roller form a barrel structure for material grinding operation;

[0011] The loading and unloading port is formed in one side of the middle roller and is in communication with the inner cavity of the middle roller, the sealing plate is fixed to the outer side of the middle roller by bolts and seals the loading and unloading port, and the loading and unloading port is downwardly arranged by removing the sealing plate, so that the grinding body is discharged;

[0012] The fixing unit is used for fixing the middle roller and the rear roller;

[0013] The locking unit is used for locking the position of the middle roller when the middle roller and the rear roller are not fixed, so that the downward state of the loading and unloading port is locked;

[0014] When the grinding body is discharged, the guiding unit is used for guiding the grinding body in the inner side of the front roller and the rear roller to roll to the middle roller region.

[0015] As a further scheme of the utility model: the fixing unit comprises a first flange and a second flange;

[0016] The first flange is fixed to the outer side of the end of the middle roller close to the rear roller, and the second flange is fixed to the outer side of the rear roller and is in contact with the end face of the middle roller and the first flange;

[0017] The bolt is passed through the holes in the first flange and the second flange and is screwed with a nut, so as to fix the middle roller and the rear roller.

[0018] As a further scheme of the utility model: the locking unit comprises a fixing ring block, a locking hole and an electric push rod;

[0019] The fixing ring block is fixed to the outer side of the end of the middle roller close to the front roller, and the fixing ring block is formed in one end of the fixing ring block and completely penetrates to the other end;

[0020] The electric push rod is fixed to the top of the support base through a support and is distributed below the front roller, the center line of the locking hole is flush with the center line of the output shaft of the electric push rod when the locking hole is rotated to the lowest position, the output shaft is inserted into the inner side of the locking hole by the extension operation of the electric push rod, and the rotation of the middle roller is locked.

[0021] As a further scheme of the utility model: the output end outer diameter of the electric push rod matches with the inner diameter of the locking hole, and the center line of the locking hole and the horizontal middle line of the loading and unloading port are in parallel distribution.

[0022] As a further scheme of the utility model: the guiding unit comprises a spiral guide rod.

[0023] The spiral guide rod is provided with two, and the two spiral guide rods are fixed to the inner wall side of the middle roller in the vertical middle line of the loading and unloading port, and the two spiral guide rods extend to the inner side of the front roller and the rear roller respectively, and the spiral guide rod is attached to the inner wall side of the front roller and the rear roller.

[0024] Compared with the prior art, the utility model has the beneficial effects that:

[0025] Through the setting of the discharging assembly, the efficient discharging operation of the grinding body can be realized, compared with the traditional structure of the circumferential operation of the loading and unloading port, the structure of the middle roller and the loading and unloading port keeps still, so that the grinding body is continuously discharged, the discharging efficiency is faster, and the replacement efficiency of the grinding body is further improved. BRIEF DESCRIPTION OF DRAWINGS

[0026] Fig. 1 It is the structural schematic diagram of the utility model;

[0027] Fig. 2 It is the structural schematic diagram of another view of the utility model;

[0028] Fig. 3 It is the structural sectional view of the front roller, the rear roller and the discharging assembly of the utility model;

[0029] Fig. 4 It is the sectional split drawing of the front roller, the rear roller and the discharging assembly of the utility model.

[0030] In the drawing: 1, ball mill assembly; 101, support chassis; 102, front roller; 103, rear roller; 104, outer ring tooth; 105, driving motor; 106, driving gear; 2, discharging assembly; 201, middle roller; 202, annular groove; 203, loading and unloading port; 204, plugging plate; 205, first flange; 206, second flange; 207, fixed ring block; 208, locking hole; 209, electric push rod; 210, spiral guide rod. DETAILED DESCRIPTION

[0031] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described, obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0032] Please refer to Figs. 1-4 In the embodiments of the present application, a mine filling glue solid powder filling material grinding device includes a ball mill assembly 1, the ball mill assembly 1 includes a support chassis 101, a front roller 102, a rear roller 103, the front roller 102 and the rear roller 103 are symmetrically rotatably installed at the top of both ends of the support chassis 101.

[0033] The middle region of the front roller 102 and the rear roller 103 is provided with a discharging assembly 2, the discharging assembly 2 includes a middle roller 201, an annular groove 202, a loading and unloading port 203, a sealing plate 204, a fixing unit, a locking unit and a guide unit.

[0034] The annular groove 202 is symmetrically formed on the inner side of both ends of the middle roller 201, the middle roller 201 is distributed in the middle of the front roller 102 and the rear roller 103 and is rotatably sleeved with the front roller 102 and the rear roller 103 through the annular groove 202, the front roller 102, the middle roller 201 and the rear roller 103 form a cylinder structure for material grinding operation.

[0035] The loading and unloading port 203 is opened on one side of the middle roller 201 and is in communication with the inner cavity of the middle roller 201, the sealing plate 204 is fixed on the outer side of the middle roller 201 through bolts and seals the loading and unloading port 203, the loading and unloading port 203 is downward by removing the sealing plate 204, which is used for realizing the discharging operation of the grinding body.

[0036] The fixing unit is used to realize the connection and fixation of the middle roller 201 and the rear roller 103.

[0037] The locking unit is used to lock the position of the middle roller 201 when the middle roller 201 and the rear roller 103 are not fixed, so as to realize the locking of the downward state of the loading and unloading port 203.

[0038] When discharging the grinding body, the guide unit is used to guide the grinding body in the inner side of the front roller 102 and the rear roller 103 to roll to the middle roller 201 region.

[0039] The fixing unit includes a first flange 205 and a second flange 206.

[0040] The first flange 205 is fixed to the outside of the middle roller 201 near one end of the rear roller 103, and the second flange 206 is fixed to the outside of the rear roller 103 and is in contact with the end face of the middle roller 201 and the first flange 205;

[0041] The first flange 205 is fixed to the outside of the middle roller 201 near one end of the rear roller 103, and the second flange 206 is fixed to the outside of the rear roller 103 and is in contact with the end face of the middle roller 201 and the first flange 205;

[0042] The locking unit includes a fixed ring block 207, a locking hole 208, and an electric push rod 209.

[0043] The fixed ring block 207 is fixed to the outside of the middle roller 201 near one end of the front roller 102, and the fixed ring block 207 is provided at one end of the fixed ring block 207 and completely penetrates to the other end.

[0044] The electric push rod 209 is fixed to the top of the support chassis 101 through a support and is distributed below the front roller 102. When the locking hole 208 is rotated to the lowest position, the center line of the locking hole 208 is flush with the center line of the output shaft of the electric push rod 209. The output shaft is inserted into the inside of the locking hole 208 through the extension operation of the electric push rod 209 to realize the rotation locking of the middle roller 201.

[0045] The outer diameter of the output end of the electric push rod 209 matches the inner diameter of the locking hole 208, and the center line of the locking hole 208 is parallelly distributed with the horizontal center line of the loading and unloading port 203.

[0046] In this embodiment: It needs to be pointed out that: The outside of the front roller 102 and the rear roller 103 is fixed with an outer ring tooth 104, and two drive motors 105 are symmetrically installed at both ends of the support chassis 101. The output end of the drive motor 105 is connected with a drive gear meshing with the outer ring tooth 104. The synchronous operation of the two drive motors 105 can realize the synchronous rotation operation of the front roller 102 and the rear roller 103. The front end of the front roller 102 and the rear end of the rear roller 103 have the same structure as the front and rear ends of the common ball mill in the market, and their operation principles are the same. Therefore, this place will not be expanded in detail.

[0047] When the cement powder raw material is ground and processed, the cement powder raw material enters the inside of the front roller 102, the middle roller 201, and the rear roller 103 through the front end of the front roller 102. At this time, the first flange 205 and the second flange 206 on the middle roller 201 are fixed by bolts (it needs to be pointed out that: At this time, the electric push rod 209 is in a retracted state and does not contact the fixed ring block 207). That is, the middle roller 201 can rotate synchronously with the rear roller 103. The tumbling of the grinding body distributed in the inside of the front roller 102, the middle roller 201, and the rear roller 103 can grind the cement powder raw material. The ground raw material can be discharged through the rear end of the rear roller 103.

[0048] When it is necessary to replace the grinding body, the operation steps are as follows:

[0049] First, the connecting bolts of the blocking plate 204 are disassembled (it should be noted that at this time, the blocking plate 204 is distributed towards one side, and after the blocking plate 204 is disassembled, the grinding body will not fall out of the loading and unloading port 203);

[0050] Then, the driving motor 105 is started to make the front roller 102, the middle roller 201 and the rear roller 103 rotate as a whole by a certain angle, so that the loading and unloading port 204 faces downward. When the locking hole 208 on the fixed ring block 207 is aligned with the output shaft of the electric push rod 209, the driving motor 105 is stopped. At this time, part of the grinding body will fall out of the loading and unloading port 203, and most of the grinding body will remain inside the front roller 102 and the rear roller 103.

[0051] Then, the electric push rod 209 is started to make its output end inserted into the locking hole 208, and then the connecting bolts of the first flange 205 and the second flange 206 are disassembled in turn, so that the first flange 205 and the second flange 206 are disconnected.

[0052] Then, the driving motor 105 is started again. At this time, the front roller 102 and the rear roller 103 rotate, and the middle roller 201 remains stationary. The rotation of the front roller 102 and the rear roller 103 makes the grinding body inside them tumble and move towards the middle roller 201, and finally fall out through the loading and unloading port 203. Compared with the traditional structure in which the loading and unloading port rotates in a circle, the structure in which the middle roller 201 and the loading and unloading port 203 remain stationary makes the grinding body continuously discharge, which is faster and further improves the replacement efficiency of the grinding body.

[0053] Please refer to Figs. 3-4 The guide unit includes a spiral guide rod 210.

[0054] The spiral guide rod 210 is provided with two, which are symmetrically fixed to the inner wall side of the middle roller 201 with the vertical center line of the loading and unloading port 203 as the symmetry axis, and extend to the inside of the front roller 102 and the rear roller 103 respectively. The spiral guide rod 210 is in close contact with the inner wall side of the front roller 102 and the rear roller 103.

[0055] In this embodiment, when the grinding body is discharged, the spiral guide rod 210 remains stationary with the middle roller 201. When the front roller 102 and the rear roller 103 rotate, the spiral guide rod 210 can guide the material. When there is a small amount of grinding body left in the front roller 102 and the rear roller 103, the tumbling grinding body can roll towards the middle roller 201 along the spiral track of the spiral guide rod 210, which not only avoids the residue of the grinding body, but also further improves the discharge efficiency of the grinding body.

[0056] The above merely describes a preferred embodiment of the present application, and the protection scope of the present application is not limited thereto, and any skilled person in the art, according to the technical scheme and the inventive concept of the present application, makes equivalent replacement or change within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A mine backfill cemented paste backfill material grinding device comprising a ball mill assembly (1), characterized in that, The ball mill assembly (1) comprises a support chassis (101), a front roller (102) and a rear roller (103), the front roller (102) and the rear roller (103) are symmetrically rotatably installed at the top of the two ends of the support chassis (101); The middle region of the front roller (102) and the rear roller (103) is provided with a discharging assembly (2), the discharging assembly (2) comprises a middle roller (201), an annular groove (202), a loading and unloading port (203), a sealing plate (204), a fixing unit, a locking unit and a guiding unit; The annular groove (202) is symmetrically formed in the inner side of the two ends of the middle roller (201), the middle roller (201) is distributed in the middle of the front roller (102) and the rear roller (103) and is rotatably sleeved with the front roller (102) and the rear roller (103) through the annular groove (202), and the front roller (102), the middle roller (201) and the rear roller (103) form a roller structure for material grinding operation; The loading and unloading port (203) is formed in one side of the middle roller (201) and is in communication with the inner cavity of the middle roller (201), and the sealing plate (204) is fixed on the outer side of the middle roller (201) by bolts and seals the loading and unloading port (203), and the loading and unloading port (203) is downwardly removed by removing the sealing plate (204) to realize the discharging operation of the grinding body; The fixing unit is used for connecting and fixing the middle roller (201) and the rear roller (103); The locking unit is used for locking the position of the middle roller (201) when the middle roller (201) and the rear roller (103) are not fixed, so as to lock the downward state of the loading and unloading port (203); When the grinding body is discharged, the guiding unit is used for guiding the grinding body in the inner side of the front roller (102) and the rear roller (103) to roll to the middle roller (201) region.

2. The mine filling cemented paste backfill material grinding device according to claim 1, characterized in that, The fixing unit comprises a first flange (205) and a second flange (206); The first flange (205) is fixed to the outer side of one end of the middle roller (201) close to the rear roller (103), and the second flange (206) is fixed to the outer side of the rear roller (103) and abuts with the end face of the middle roller (201) and the first flange (205); By penetrating the holes on the first flange (205) and the second flange (206) with bolts and rotating the nuts, the connection and fixation of the middle roller (201) and the rear roller (103) are realized.

3. The mine filling cemented paste backfill material grinding device according to claim 1, characterized in that, The locking unit comprises a fixed ring block (207), a locking hole (208) and an electric push rod (209); The fixed ring block (207) is fixed to the outer side of one end of the middle roller (201) close to the front roller (102), and the fixed ring block (207) is formed at one end of the fixed ring block (207) and penetrates the other end completely. The electric push rod (209) is fixed on the top of the support chassis (101) by a support and is distributed below the front roller (102), the center line of the locking hole (208) is parallel to the center line of the output shaft of the electric push rod (209) when the locking hole (208) is rotated to the lowest position, and the output shaft is inserted into the inside of the locking hole (208) by the extension operation of the electric push rod (209) to realize the rotation locking of the middle roller (201).

4. The mine filling cemented paste backfill material grinding device of claim 3, wherein, The outer diameter of the output end of the electric push rod (209) matches the inner diameter of the locking hole (208), and the center line of the locking hole (208) is parallel to the horizontal middle line of the loading and unloading port (203).

5. The mine filling cemented paste backfill material grinding device according to claim 1, characterized in that, The guiding unit comprises a spiral guide rod (210); The spiral guide rod (210) is provided with two, the two spiral guide rods (210) are fixed on the inner wall side of the middle roller (201) in a vertical middle line of the loading and unloading port (203) symmetry, and the two spiral guide rods (210) respectively extend to the inside of the front roller (102) and the rear roller (103), and the spiral guide rod (210) is attached to the inner wall side of the front roller (102) and the rear roller (103).

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