CN216538770U

CN216538770U - Be applied to sand mill add grinding medium device

Info

Publication number: CN216538770U
Application number: CN202122536802.2U
Authority: CN
Inventors: 林焕
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-10-21
Filing date: 2021-10-21
Publication date: 2022-05-17
Anticipated expiration: 2031-10-21

Abstract

The utility model relates to the technical field of ore pulp grinding equipment, in particular to a grinding medium adding device applied to a sand mill, which comprises a grinding medium hopper, a medium pressing pipe, a valve shell, a valve core, a medium inlet pipe and a residual slurry discharge pipe, wherein the valve core is movably arranged in the valve shell and is provided with more than three channels, and the valve core moves to enable each channel to sequentially move to different positions during working: the feeding position is as follows: communicating the grinding medium hopper so that the grinding medium in the grinding medium hopper falls into the channel; a discharging position: the medium pressing pipe and the medium inlet pipe are communicated at the same time, so that the grinding medium in the channel is discharged from the medium inlet pipe under the hydraulic action of the medium pressing pipe; emptying position: and communicating the residual slurry discharge pipe to empty the liquid in the channel. The three positions are switched circularly, so that grinding media are continuously and smoothly added into the grinding cylinder.

Description

Be applied to sand mill add grinding medium device

Technical Field

The utility model relates to the technical field of ore pulp grinding equipment, in particular to a grinding medium adding device applied to a sand mill.

Background

The sand mill is the most widely, most advanced and most efficient grinding equipment for the materials at present, and can be roughly divided into a horizontal sand mill, a basket type sand mill, a vertical sand mill and the like according to the use performance. The grinding cavity of the sand mill is narrow, the gap of the deflector rod is small, the grinding energy is dense, the cooling system and the automatic control system with high performance are matched, the continuous processing and continuous discharging of materials can be realized, the production efficiency is greatly improved, and particularly, the large horizontal sand mill in the sand mill is realized by the fact that the large horizontal sand mill is applied to the superfine grinding of mineral powder due to the maturity of the design and the manufacturing technology in recent years.

The basic principle of the sand mill is as follows: media (grinding beads or grinding media for short) for grinding, such as zirconium beads (zirconium dioxide), glass beads and the like, are filled in a closed grinding cylinder, the media in the grinding cylinder are stirred through a rotary disc or a pin arranged on a rotating shaft, so that the media generate relative motion, ore pulp to be ground passes through the grinding media to be ground to achieve the grinding effect, the ground ore pulp flows out from a pulp outlet of the grinding cylinder, the media are kept in the grinding cylinder, theoretically, the higher the relative speed of the grinding media is, the larger the impact force is, the better the grinding fineness is, actually, various factors influence the flowing speed of the ore pulp and the speed of the grinding media, and the flowing speed of the ore pulp and the speed of the grinding media cannot be too large.

The medium of the existing sand mill is reserved in a grinding cylinder, and the main problems are that the ore pulp to be ground flows in from a pulp inlet at one end of the grinding cylinder, and the grinding medium in the grinding cylinder has transverse thrust and can be pushed towards the pulp outlet, so that the density of the grinding medium at the front section (close to the pulp inlet) of the grinding cylinder is small, and the density of the grinding medium at the rear section (close to the pulp outlet) of the grinding cylinder is large, namely the density of the grinding medium in the grinding cylinder is uneven and uncontrollable; the grinding efficiency of the front section of the grinding cylinder is low, the ore pulp flowing difficulty can be caused by the overlarge density of the rear section of the grinding cylinder, the whole grinding efficiency is also influenced, and the energy consumption is improved.

Therefore, the inventor creates a technology that the grinding medium and the ore pulp flow out together, and then the grinding medium and the ground ore pulp are separated outside the grinding cylinder to achieve the purpose of recycling the grinding medium, and the technology is not disclosed yet. How to throw grinding medium and ore pulp into in the grinding barrel together, this is one of the key difficult problems of realizing that grinding medium recycles. If the grinding medium is directly placed in the pulp and conveyed by the pulp pump, the pulp conveyed by the pulp pump has larger pressure, so that the pipeline and the main pulp pump are abraded. In addition, the grinding medium enters the grinding cylinder and faces the positive pressure problem, and because the stirring mechanism generates larger positive pressure in the grinding cylinder during working, if the grinding medium is directly thrown into the grinding cylinder, the grinding medium can be pressurized and can be ejected outwards, so that the grinding medium cannot be thrown into the grinding cylinder.

Disclosure of Invention

Aiming at the technical problems in the prior art, the utility model provides a grinding medium adding device applied to a sand mill.

In order to achieve the purpose, the utility model provides the following technical scheme:

the utility model provides a be applied to sand mill add mill and mediate device, including grinding the medium fill, pressing and mediating thick liquid pipe, valve casing, case, advancing and mediate pipe and surplus thick liquid delivery pipe, case movably installs in the valve casing, and the case is equipped with the passageway more than three, and the valve casing motion is in order so that different passageways: the grinding medium hopper, the medium pressing pipe, the medium inlet pipe and the residual slurry discharge pipe are communicated.

Specifically, a rotating shaft penetrates through the center of the valve core, and more than three channels of the valve core are distributed around the rotating shaft.

Specifically, the valve casing is equipped with step motor, and step motor's output shaft is fixed mutually with the pivot to the drive pivot rotates step by step.

Specifically, the valve casing includes the casing body to and be located the upper end cover and the lower end cover at casing body both ends respectively, grind the medium fill and press the medium thick liquid pipe to be fixed in the upper end cover, advance the medium pipe and remain thick liquid delivery pipe to be fixed in the lower end cover.

Specifically, the shell body is the tube-shape, and the case is cylindricly, and the outer wall of case and the inner wall clearance fit of shell body, be clearance fit between the terminal surface of case and upper end cover, the lower end cover.

Specifically, the side of the grinding medium adding device is provided with a primary pulp cylinder for bearing pulp to be ground, the primary pulp cylinder is provided with a pressure medium pump, and a pressure medium pulp pipe is communicated with the primary pulp cylinder through the pressure medium pump.

Specifically, the residual slurry discharge pipe is communicated with the original slurry cylinder.

Concretely, add and grind the device and still include grinding the hoist mechanism that situated between, it includes the feeder hopper, rises the material screw section of thick bamboo and arranges the material pipe, rises the material screw section of thick bamboo including defeated the medium pipe, arrange defeated intraductal screw feeding pole of medium and be used for driving screw feeding pole pivoted reinforced motor, arrange the upper end portion and the grinding medium fill that the material pipe intercommunication was failed the medium pipe.

In particular, the inlet pipe is arranged obliquely with respect to the vertical.

Specifically, the grinding medium hopper is in a funnel shape with an opening gradually increasing upwards.

The utility model has the beneficial effects that:

the grinding medium adding device applied to the sand mill has the advantages that when the grinding medium adding device works, the valve core moves to enable each channel to sequentially move to different positions:

the feeding position is as follows: communicating the grinding medium hopper so that the grinding medium in the grinding medium hopper falls into the channel;

a discharging position: the medium pressing pipe and the medium inlet pipe are communicated at the same time, so that the grinding medium in the channel is discharged from the medium inlet pipe under the hydraulic action of the medium pressing pipe;

emptying position: and communicating the residual slurry discharge pipe to empty the liquid in the channel.

The three positions are switched circularly, so that grinding media are continuously and smoothly added into the grinding cylinder.

Drawings

Fig. 1 is a schematic view of a sanding system to which a sanding medium device applied to a sanding machine according to an exemplary embodiment is applied.

FIG. 2 is a schematic diagram of a grinding medium feeding device applied to a sand mill in an embodiment.

Fig. 3 is a schematic diagram illustrating the valve core and the rotating shaft of the grinding medium adding device in the embodiment.

FIG. 4 is a schematic view illustrating a usage state of the abrasive media feeding apparatus according to the embodiment.

Reference numerals:

a grinding medium hopper 11, a medium pressing pipe 12, a valve shell 13, a shell body 131, an upper end cover 132, a lower end cover 133, a valve core 14, a medium inlet pipe 15, a residual slurry discharge pipe 16, a rotating shaft 17 and a stepping motor 18;

a grinding medium lifting mechanism 2, a feed hopper 21, a medium conveying pipe 22, a spiral feeding rod 23, a feeding motor 24 and a discharging pipe 25;

a raw slurry cylinder 3 and a pressure medium pump 31.

Detailed Description

The present invention will be described in detail below with reference to specific embodiments and the accompanying drawings.

The grinding medium adding device applied to the sand mill of the embodiment includes, as shown in fig. 1 to fig. 4, a grinding medium hopper 11, a medium pressing pipe 12, a valve casing 13, a valve core 14, a medium inlet pipe 15 and a residual slurry discharge pipe 16, wherein the grinding medium hopper 11 is funnel-shaped with an opening gradually increasing upwards, the medium inlet pipe 15 is obliquely arranged relative to a plumb line, and a rotating shaft 17 is penetrated through the center of the valve core 14 and rotatably installed in the valve casing 13. The valve housing 13 is provided with a stepping motor 18, and an output shaft of the stepping motor 18 is fixed to the rotary shaft 17 to drive the rotary shaft 17 to rotate in steps. The valve element 14 is provided with three channels, the three channels of the valve element 14 being distributed around the axis of rotation 17.

In operation, the stepper motor 18 drives the spool 14 to rotate in steps, such that each channel moves in three positions: the feeding position is as follows: communicating the grinding medium hopper 11 so that the grinding medium in the grinding medium hopper 11 falls into the passage by gravity; a discharging position: the medium pressing pipe 12 and the medium inlet pipe 15 are communicated at the same time, so that the grinding medium in the channel is discharged from the medium inlet pipe 15 under the hydraulic action of the medium pressing pipe 12; emptying position: a residual slurry discharge pipe 16 is communicated to evacuate the liquid in the channel. The three positions are switched circularly, so that grinding media are continuously and smoothly added into the grinding cylinder.

In practice the number of channels in the valve core 14 may be varied to more than three.

Specifically, the valve housing 13 includes a cylindrical housing body 131, and an upper end cap 132 and a lower end cap 133 respectively located at two end portions of the housing body 131, the valve element 14 is cylindrical, an outer wall of the valve element 14 is in clearance fit with an inner wall of the housing body 131, and end surfaces of the valve element 14 are in clearance fit with the upper end cap 132 and the lower end cap 133. The medium grinding hopper 11 and the medium pressing pipe 12 are fixed to the upper end cover 132, and the medium inlet pipe 15 and the residual slurry discharge pipe 16 are fixed to the lower end cover 133.

Specifically, the side of the grinding medium adding device is provided with a primary pulp cylinder 3 for bearing pulp to be ground, the primary pulp cylinder 3 is provided with a pressure medium pump 31, a pressure medium pulp pipe 12 is communicated with the primary pulp cylinder 3 through the pressure medium pump 31, and a residual pulp discharge pipe 16 is communicated with the primary pulp cylinder 3.

The grinding medium feeding device further comprises a grinding medium lifting mechanism 2 which comprises a feed hopper 21, a material lifting spiral cylinder and a material discharging pipe 25, wherein the material lifting spiral cylinder is a common spiral feeder and comprises a medium conveying pipe 22, a spiral feeding rod 23 arranged in the medium conveying pipe 22 and a feeding motor 24 used for driving the spiral feeding rod 23 to rotate, and the material discharging pipe 25 is communicated with the upper end part of the medium conveying pipe 22 and the grinding medium hopper 11.

Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the protection scope of the present invention, although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. The utility model provides a be applied to device that grinds of sand mill with grinding medium which characterized by: including grinding the medium fill, pressing medium thick liquid pipe, valve casing, case, advancing medium pipe and surplus thick liquid delivery pipe, case movably installs in the valve casing, and the case is equipped with the passageway more than three, and the valve casing motion is in order so that different passageways: the grinding medium hopper, the medium pressing pipe, the medium inlet pipe and the residual slurry discharge pipe are communicated.

2. The apparatus of claim 1, wherein the grinding media is: the center of the valve core is penetrated with a rotating shaft, and more than three channels of the valve core are distributed around the rotating shaft.

3. The apparatus of claim 2, wherein the grinding media is: the valve casing is equipped with step motor, and step motor's output shaft is fixed mutually with the pivot to the drive pivot rotates step by step.

4. A grinding media feeding apparatus for a grinding mill according to claim 1, 2 or 3, wherein: the valve casing includes the casing body to and be located the upper end cover and the lower end cover at casing body both ends respectively, grind medium fill and press the medium thick liquid pipe to be fixed in the upper end cover, advance the medium pipe and remain thick liquid delivery pipe to be fixed in the lower end cover.

5. The apparatus as claimed in claim 4, wherein: the shell body is the tube-shape, and the case is cylindricly, and the outer wall of case and the inner wall clearance fit of shell body, is clearance fit between the terminal surface of case and upper end cover, the lower end cover.

6. The apparatus of claim 1, wherein the grinding media is: the side of the grinding medium adding device is provided with a primary pulp cylinder for bearing pulp to be ground, the primary pulp cylinder is provided with a pressure medium pump, and a pressure medium pulp pipe is communicated with the primary pulp cylinder through the pressure medium pump.

7. The apparatus as claimed in claim 6, wherein: the residual slurry discharge pipe is communicated with the original slurry cylinder.

8. The apparatus of claim 1, wherein the grinding media is: the grinding medium feeding device further comprises a grinding medium lifting mechanism which comprises a feed hopper, a material lifting spiral cylinder and a material discharging pipe, wherein the material lifting spiral cylinder comprises a medium conveying pipe, a spiral feeding rod arranged in the medium conveying pipe and a feeding motor used for driving the spiral feeding rod to rotate, and the material discharging pipe is communicated with the upper end part of the medium conveying pipe and a grinding medium hopper.

9. The apparatus of claim 1, wherein the grinding media is: the inlet pipe is arranged obliquely with respect to the vertical.

10. The apparatus of claim 1, wherein the grinding media is: the grinding medium hopper is in a funnel shape with an opening gradually increasing upwards.