CN218048201U

CN218048201U - Sand mill

Info

Publication number: CN218048201U
Application number: CN202221911396.1U
Authority: CN
Inventors: 马明建; 杜果; 刘林
Original assignee: Panzhihua Haifengxin Chemical Co ltd
Current assignee: Panzhihua Haifengxin Chemical Co ltd
Priority date: 2022-07-22
Filing date: 2022-07-22
Publication date: 2022-12-16
Anticipated expiration: 2032-07-22

Abstract

The utility model relates to a sand mill, which comprises a frame, wherein a motor and a grinding cylinder which is horizontally arranged are arranged on the frame, a rotatable main shaft is supported in the grinding cylinder, the motor is connected with the main shaft in the grinding cylinder through a transmission part in a transmission way, the grinding cylinder is provided with a first feeding pipe, the end part of the grinding cylinder is provided with a material separator, and a discharge pipe is arranged on the material separator; the grinding cylinder still is equipped with the second inlet pipe, the entrance point of second inlet pipe is connected in the below of mixing drum, the upper segment of mixing drum is provided with the water inlet, and the inlet tube is connected to the end of intaking of this water inlet, the mixing drum is connected with the second inlet pipe through the first valve that is used for flow control.

Description

Sand mill

Technical Field

The utility model relates to a chemical industry equipment, concretely relates to sand mill.

Background

Titanium dioxide is used as a main component, and the particle size distribution of titanium dioxide is a comprehensive index which seriously influences the pigment performance of titanium dioxide and the application performance of products. When the existing sulfuric acid method is used for grinding titanium dioxide on a large scale, a large horizontal type sand mill is usually required to continuously operate, grinding media are loaded in the sand mill, the grinding media usually use zirconia beads as grinding media, and ground slurry is discharged through a separating component of the sand mill.

Disclosure of Invention

The utility model aims at prior art not enough, provide a sand mill, its simple structure is compact, can realize lasting the grinding, grinds effectually simultaneously, can also show the life who prolongs sand mill.

The purpose of the utility model is realized like this: a sand mill comprises a frame, wherein a motor and a grinding cylinder which is horizontally arranged are arranged on the frame, a rotatable main shaft is supported in the grinding cylinder, the motor is in transmission connection with the main shaft in the grinding cylinder through a transmission part, the grinding cylinder is provided with a first feeding pipe, a material separator is arranged at the end part of the grinding cylinder, and a discharge pipe is arranged on the material separator;

the grinding cylinder still is equipped with the second inlet pipe, the entrance point connection of second inlet pipe is in the below of mixing drum, the upper segment of mixing drum is provided with the water inlet, and the inlet tube is connected to the end of intaking of this water inlet, the mixing drum is connected with the second inlet pipe through the first valve that is used for flow control, the mixing drum is connected with the osculum end of funnel.

The top of the mixing barrel is provided with a sealing cover, the sealing cover is provided with a vertical pipe extending upwards, and the upper part of the vertical pipe is connected with a funnel.

And a second valve for controlling the flow is arranged on the vertical pipe.

The first valve is a stainless steel ball valve, and the second valve is a PP ball valve.

The grinding cylinder is provided with a main feeding pipe, the upstream end of the main feeding pipe is connected with the outlet end of the three-way pipe in a sealing way,

the first inlet of the three-way pipe is connected with the downstream end of the first feeding pipe, the first feeding pipe is provided with a third valve for controlling flow, and the second inlet of the three-way pipe is connected with the downstream end of the second feeding pipe.

The mixing drum comprises a cylindrical upper drum body and a conical lower drum body, and the lower opening end of the upper drum body is connected with the lower drum body.

The upper barrel body is provided with a water inlet, the axis of the water inlet penetrates into the upper barrel body in a tangential direction, and the outer opening end of the water inlet is connected with a water inlet pipe.

The grinding cylinder is provided with a cooling water jacket, the cooling water jacket is provided with a first water inlet and a first water outlet, and a second water outlet is further formed in the cooling water jacket.

The second water outlet is communicated with the upstream end of the water inlet pipe through a middle pipe section provided with a check valve and a third control valve.

The main shaft is provided with a plurality of bar pins, the main shaft is provided with a hollow rotor, the material separator comprises an end cover connected to the end part of the grinding cylinder, a detachable gland is arranged on the end cover, a material discharging pipe is arranged on the gland, and the material discharging pipe stretches into a screen mesh provided with a cylindrical shape on the gland.

By adopting the scheme, the grinding machine has the beneficial effects that the grinding machine comprises a rack, wherein the rack is provided with a motor and a grinding cylinder which is horizontally arranged, a rotatable main shaft is supported in the grinding cylinder, the motor is in transmission connection with the main shaft in the grinding cylinder through a transmission part, the grinding cylinder is provided with a first feeding pipe, the end part of the grinding cylinder is provided with a material separator, and the material separator is provided with a discharging pipe; when the motor on the rack drives the main shaft to continuously operate, the main shaft drives the slurry and the grinding medium to continuously grind in the grinding cylinder, and the ground slurry is separated by the separator. Along with the progress of grinding, after the grinding medium consume, for keeping good operating mode, add grinding medium through the funnel, in the funnel gets into the mixing drum, open first valve, adjust reasonable valve aperture, make it have the flow through rate of expectation, make grinding medium can slowly get into the mixing drum in, prevent that a large amount of grinding medium from pouring into fast in the short time, arousing that the motor load rises steeply, make the motor receive the heavy current damage, when first valve also can prevent not adding grinding medium, the reverse overflow of thick liquids gets into the mixing drum. Accessible inlet tube feed liquor makes grinding medium get into the grinding vessel smoothly in the mixing drum to in getting into the grinding vessel with the whole medium of medium in the grinding vessel, can add according to the addition of needs, prevent that grinding medium from stopping in the mixing drum, can't realize the interpolation of expectation addition, can also realize preventing that graininess grinding medium from silting up in the mixing drum through the feed liquor certainly. By adopting the scheme, continuous grinding can be realized, good grinding working conditions are kept simultaneously, the machine does not need to be stopped for replacement, and the working efficiency is greatly improved. Certainly, the impact of large current on the motor in the starting and stopping process of the motor can be avoided, the service life of the motor is prolonged in a limited way, and the device is very suitable for large-scale titanium dioxide production.

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

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

In the drawing, 100 is a frame, 110 is a motor, 120 is a grinding cylinder, 130 is a main shaft, 138 is a hollow rotor, 140 is a first feeding pipe, 145 is a total feeding pipe, 146 is a third valve, 150 is a material separator, 151 is an end cover, 152 is a gland, 153 is a screen, 154 is a discharge pipe, 160 is a second feeding pipe, 170 is a three-way pipe, 171 is an outlet end, 172 is a first inlet, 200 is a mixing cylinder, 201 is a seal cover, 202 is a vertical pipe, 205 is an upper cylinder body, 206 is a lower cylinder body, 210 is a water inlet pipe, 220 is a first valve, 230 is a second valve, and 240 is a funnel.

Detailed Description

Specific embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Referring to fig. 1, an embodiment of a sand mill, includes a frame 100, the frame 100 is provided with a motor 110 and a horizontally arranged grinding cylinder 120, the grinding cylinder may be a split machine structure, a mounting end cover of the grinding cylinder is fixed on the frame, and a cylinder body of the grinding cylinder is connected with the mounting end cover in a sealing manner. The grinding cylinder 120 is internally supported with a rotatable spindle 130, the motor 110 is in transmission connection with the spindle 130 in the grinding cylinder 120 through a transmission element, the grinding cylinder 120 is provided with a first feeding pipe 140, the end of the grinding cylinder 120 is provided with a material separator 150, and the material separator 150 is provided with a discharging pipe 154; the main shaft 130 is provided with a plurality of bar pins, and a hollow rotor 138 is arranged on the main shaft 130. In this embodiment, the material separator 150 includes an end cap 151 connected to an end of the grinding cylinder 120, a detachable gland 152 is disposed on the end cap 151, a material discharge pipe 154 is disposed on the gland 152, and the material discharge pipe 154 extends into the gland 152 and is provided with a cylindrical screen 153.

Grinding vessel 120 still is equipped with second inlet pipe 160, the entrance point of second inlet pipe 160 is connected in the below of mixing drum 200, the upper segment of mixing drum 200 is provided with the water inlet, and the inlet tube 210 is connected to the end of intaking of this water inlet, mixing drum 200 is connected with second inlet pipe 160 through the first valve 220 that is used for the controlled flow, mixing drum 200 is connected with the osculum end of funnel 240, also the osculum end of funnel is put in mixing drum top or is stretched into in the mixing drum to it can to realize in the funnel grinding medium can get into the mixing drum.

In this embodiment, a sealing cover 201 may be disposed on the top of the mixing drum 200, a riser 202 extending upward is disposed on the sealing cover 201, a funnel 240 is connected above the riser 202, and of course, connecting flanges may be disposed at both ends of the riser 202 for facilitating connection; meanwhile, the sealing cover 201 is arranged, so that the mixing drum 200 can be conveniently detached, and the inner cavity structure can be conveniently observed. Further, a second valve 230 is provided on the standpipe 202 for controlling flow, and the second valve is provided to control the rate of addition of grinding media in the event of failure of the first valve, improving overall system reliability. The first valve 220 is a stainless steel ball valve with the model number of Q41F-16P, and the second valve 230 is a PP ball valve with the model number of DN65.

The mixing cylinder 200 may include a cylindrical upper cylinder 205 and a conical lower cylinder 206, the lower opening end of the upper cylinder 205 is hermetically connected with the upper opening end of the lower cylinder 206, the cylindrical upper cylinder 205 may be conveniently processed, and may be manufactured by rolling and welding, and the conical lower cylinder 206 may facilitate discharging, preventing the abrasive medium from being stored in the mixing cylinder 200. Furthermore, the upper barrel body 205 is provided with a water inlet with an axial line tangentially penetrating into the upper barrel body 205, the outer opening end of the water inlet is connected with a water inlet pipe 210 and can be flushed under the condition of adding grinding media, tangentially ejected water flow can form a vortex-shaped flow beam along the barrel wall, the grinding media in one circle of the barrel wall of the mixing barrel 200 are flushed, and clogging caused by the grinding media is prevented. Of course, the upper barrel 205 is provided with a plurality of water inlets uniformly distributed around the barrel, so that a region-balanced vortex-shaped flow beam can be provided; the center of the flow beam and the center of the conical bottom tend to be collinear, and the discharge efficiency is improved.

In some embodiments, to improve the compactness, the grinding cylinder 120 is provided with a main feeding pipe 145, the upstream end of the main feeding pipe 145 is connected with the outlet end 171 of a tee 170 in a sealing way, the first inlet 172 of the tee 170 is connected with the downstream end of the first feeding pipe 140, the first feeding pipe 140 is provided with a third valve 146 for controlling the flow, and the second inlet of the tee 170 is connected with the downstream end of the second feeding pipe 160. Further, the main feeding pipe 145, the third pipe 170 and the second feeding pipe 160 are all steel pipes, the main feeding pipe 145 and the second feeding pipe 160 are coaxially arranged in the vertical direction, and by adopting the structure, the addition of the abrasive medium is not continuous, and only after the medium is worn, the addition is carried out, meanwhile, the whole mixing barrel 200 and the funnel 240 have small mass, can be directly supported through collinear pipelines, the requirement can be met without independently arranging a support frame, and the cost can be obviously reduced and the structural compactness can be improved.

In some embodiments, because a large amount of friction heat is generated during the grinding process, in order to ensure a good grinding working condition, the grinding cylinder 120 is provided with a cooling water jacket, the cooling water jacket is provided with a first water inlet and a first water outlet, and a second water outlet is further provided on the cooling water jacket, so that by arranging the water jacket, a large amount of friction heat can be taken away, and meanwhile, the sand mill can continuously maintain a better working condition. On this basis, still further, the second water outlet is communicated with the upstream end of the water inlet pipe 210 through an intermediate pipe section provided with a check valve and a third control valve, and in this way, the arrangement of a water supply system is effectively reduced, and meanwhile, the cooling water discharged from the cooling water jacket is used for flushing the grinding medium, the temperature of the flushed liquid is consistent with that of the grinding cylinder 120, so that a quenching state cannot be caused, the working condition can be well operated, meanwhile, the damage to the structure of the sand mill, particularly the sealing structure, can be prevented, and the service life of the sand mill can be prolonged. Meanwhile, the liquid entering the grinding cylinder 120 is supplemented in the circulating system and mixed with cooling water, so that the cooling water is properly reduced, and the energy-saving effect can be improved.

Adopt the utility model discloses when carrying out the titanium white powder and grinding, along with going on of grinding, grinding medium consume the back, for keeping good operating mode, add grinding medium through funnel 240, when opening first valve 220, make in the medium gets into mixing drum 200, the funnel also can save grinding medium of course, through second valve control addition, can close first valve 220 afterwards and open second valve 230. Of course, closing the second valve can also balance the pressure in the mixing drum 200 with the pressure in the grinding drum to allow the grinding media to enter the grinding drum 120 smoothly. And the grinding medium in the mixing cylinder 200 smoothly enters the grinding cylinder 120 through the liquid inlet pipe 210, so that the hanging and the clogging are prevented, the grinding medium is prevented from staying in the mixing cylinder 200 and in a pipeline, and the grinding medium can be accurately added according to the required addition amount. And after the operation is finished, closing the first valve. By adopting the scheme, continuous grinding can be realized, good grinding working conditions are kept simultaneously, the machine does not need to be stopped for replacement, and the working efficiency is greatly improved. Certainly, the impact of large current on the motor 110 in the starting and stopping processes of the motor 110 can be avoided, the service life of the motor is prolonged in a limited way, and the motor is very suitable for large-scale titanium dioxide production

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and it is obvious that those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. A sand mill characterized in that: the grinding machine comprises a rack (100), wherein a motor (110) and a grinding cylinder (120) which is horizontally arranged are arranged on the rack (100), a main shaft (130) which can rotate is supported in the grinding cylinder (120), the motor (110) is in transmission connection with the main shaft (130) in the grinding cylinder (120) through a transmission piece, the grinding cylinder (120) is provided with a first feeding pipe (140), the end part of the grinding cylinder (120) is provided with a material separator (150), and a discharging pipe (154) is arranged on the material separator (150);

grinding vessel (120) still is equipped with second inlet pipe (160), the entrance point of second inlet pipe (160) is connected in the below of mixing drum (200), the upper segment of mixing drum (200) is provided with the water inlet, and inlet tube (210) are connected to the end of intaking of this water inlet, mixing drum (200) are connected with second inlet pipe (160) through first valve (220) that are used for flow control, mixing drum (200) are connected with the osculum end of funnel (240).

2. A sand mill according to claim 1, wherein: a sealing cover (201) is arranged at the top of the mixing cylinder (200), a riser (202) extending upwards is arranged on the sealing cover (201), and a funnel (240) is connected above the riser (202).

3. A sander as set forth in claim 2, wherein: a second valve (230) for controlling flow is provided on the standpipe (202).

4. A sand mill according to claim 3, wherein: the first valve (220) is a stainless steel ball valve, and the second valve (230) is a PP ball valve.

5. A sander as set forth in claim 1, wherein: the grinding cylinder (120) is provided with a main feeding pipe (145), the upstream end of the main feeding pipe (145) is connected with the outlet end (171) of a tee pipe (170) in a sealing way,

the first inlet (172) of the tee joint (170) is connected with the downstream end of the first feeding pipe (140), the first feeding pipe (140) is provided with a third valve (146) for controlling the flow, and the second inlet of the tee joint (170) is connected with the downstream end of the second feeding pipe (160).

6. A sand mill according to claim 1, wherein: the mixing barrel (200) comprises a cylindrical upper barrel (205) and a conical lower barrel (206), and the lower opening end of the upper barrel (205) and the lower barrel (206) are connected.

7. A sand mill according to claim 6, wherein: the upper cylinder body (205) is provided with a water inlet with an axial line tangentially penetrating into the upper cylinder body (205), and the outer opening end of the water inlet is connected with a water inlet pipe (210).

8. A sander as set forth in claim 2, wherein: the grinding cylinder (120) is provided with a cooling water jacket, the cooling water jacket is provided with a first water inlet and a first water outlet, and the cooling water jacket is further provided with a second water outlet.

9. A sand mill according to claim 8, wherein: the second water outlet is communicated with the upstream end of the water inlet pipe (210) through a middle pipe section provided with a check valve and a third control valve.

10. A sander as set forth in claim 1, wherein: a plurality of pins are arranged on the main shaft (130), a hollow rotor (138) is arranged on the main shaft (130), the material separator (150) comprises an end cover (151) connected to the end part of the grinding cylinder (120), a detachable gland (152) is arranged on the end cover (151), a material discharging pipe (154) is arranged on the gland (152), and the material discharging pipe (154) stretches into a cylindrical screen (153) arranged on the gland (152).