CN211070293U

CN211070293U - Vertical grinder

Info

Publication number: CN211070293U
Application number: CN201920999123.9U
Authority: CN
Inventors: 唐志鹏; 李俊斌
Original assignee: Xi'an Zhongli Asphalt Co ltd
Current assignee: Xi'an Zhongli Asphalt Co ltd
Priority date: 2019-06-30
Filing date: 2019-06-30
Publication date: 2020-07-24
Anticipated expiration: 2029-06-30

Abstract

The utility model provides a vertical grinding machine, include: the grinding cylinder is provided with a grinding cavity capable of accommodating grinding media; the discharging box is provided with a discharging cavity and a discharging hole communicated with the discharging cavity; the discharge box is arranged on one side of the grinding cylinder, and the grinding cavity is communicated with the discharge cavity; a first screen disposed between the grinding chamber and the discharge chamber to separate the grinding media from the discharge chamber; the second screen is arranged in the discharging cavity and is positioned between the first screen and the discharging hole; the mesh size of the second screen is smaller than or equal to that of the first screen. Adopt the utility model discloses, can be when appearing "leaking the pearl" phenomenon, the grinding medium that prevents to get into in the play material chamber flows along with the natural asphalt that grinds from the discharge gate, from this, can avoid grinding medium sneak into among the natural asphalt that grinds and influence the quality of pitch.

Description

Vertical grinder

Technical Field

The utility model relates to a material grinds the field, especially indicates a vertical grinding machine.

Background

In the production process of natural asphalt, the raw asphalt ore is first crushed and ground, and then a processing liquid is added to the ground asphalt powder to form a natural asphalt mixture slurry. In order to better show the adhesion and the use effect of the natural asphalt, the vertical grinder is also required to perform wet grinding on the natural asphalt mixed slurry, so that the granularity of the natural asphalt particles in the natural asphalt mixed slurry reaches a smaller level (such as between 0.1um and 3.5 um) to achieve the liquefaction and activation effects.

In order to ensure that the natural asphalt particles in the natural asphalt mixed slurry can be ground into particles with the diameter of 0.1um to 3.5um, a certain amount of grinding media is required to be added into a grinding cylinder of the vertical grinding machine, and the grinding media are grinding balls. And after the natural asphalt mixed slurry is ground in the grinding cavity, conveying the natural asphalt mixed slurry to a discharge box communicated with the grinding cylinder for temporary storage. In order to prevent the grinding medium from being conveyed to the discharge box along with the ground natural asphalt, a screen is arranged between the grinding cylinder and the discharge box. However, during the grinding process, there is a certain degree of collision and friction between the grinding balls and the first screen, and after long-term use, the grinding medium wear becomes smaller or the mesh wear at a part of the screen becomes larger, so that a part of the grinding balls can be squeezed into the discharging box from the mesh position of the screen along with the ground natural asphalt, and the phenomenon of bead leakage is caused. The leaked grinding balls are mixed in the ground natural asphalt, and the quality of the asphalt is adversely affected.

SUMMERY OF THE UTILITY MODEL

In view of the above, the main objective of the present invention is to provide a vertical grinder, which mainly solves the problem that the quality of the ground natural asphalt is affected by the mixing of the grinding medium leaked from the screen mesh.

In order to achieve the above purpose, the technical scheme of the utility model is realized like this:

the utility model provides a vertical grinding machine, include:

a grinding cylinder having a grinding chamber that can hold grinding media;

the discharging box is provided with a discharging cavity and a discharging hole communicated with the discharging cavity; the discharge box is arranged on one side of the grinding cylinder, and the grinding cavity is communicated with the discharge cavity;

a first screen disposed between the grinding chamber and the discharge chamber to separate the grinding media from the discharge chamber;

the second screen is arranged in the discharging cavity and is positioned between the first screen and the discharging hole; the mesh size of the second screen is smaller than or equal to the mesh size of the first screen.

Further, the vertical grinding machine also comprises a discharge stirring device, wherein the discharge stirring device comprises a discharge stirring driving source, a discharge stirring shaft and a discharge stirring blade;

the discharging stirring driving source is arranged above the discharging box;

one end of the discharging stirring shaft is connected with an output shaft of the discharging stirring driving source, and the other end of the discharging stirring shaft is positioned in the discharging cavity and on one side of the second screen far away from the discharging hole; the discharging stirring blade is connected with one end of the discharging stirring shaft, which is positioned in the discharging cavity.

Further, the second screen divides the discharge cavity into a first discharge cavity and a second discharge cavity;

the first discharging cavity is positioned above the second discharging cavity, one end of the discharging stirring shaft, which is far away from the output shaft of the discharging stirring driving source, is arranged in the first discharging cavity, and the first screen is arranged between the grinding cavity and the first discharging cavity;

the discharge hole is communicated with the second discharge cavity.

Further, the discharge box is also provided with a discharge port; the discharge port is communicated with the first discharge cavity.

Further, the vertical grinding machine also comprises a heat conduction device; the heat conducting means is configured to transfer heat to the grinding chamber. Further, the vertical grinder comprises an outer shell, a supporting device and a grinding and stirring device, wherein the outer shell covers the grinding cylinder, and the grinding and stirring device comprises a grinding and stirring driving source, a grinding and stirring shaft, a stirrer and a positioning piece; the top wall of the grinding cavity is provided with a mounting hole communicated with the grinding cavity;

the supporting device is arranged above the outer shell, the grinding and stirring driving source is arranged above the supporting device, one end of the grinding and stirring shaft is connected with an output shaft of the grinding and stirring driving source, and the other end of the grinding and stirring shaft penetrates through the supporting device and the mounting hole and is positioned in the grinding cavity; the supporting device is configured to support the grinding stirring shaft; the stirrer is connected with the grinding stirring shaft and is positioned in the grinding cavity; the positioning piece is connected with one end, far away from the output shaft of the grinding stirring driving source, of the grinding stirring shaft.

Further, the positioning piece is detachably connected with one end, far away from the output shaft of the grinding stirring driving source, of the grinding stirring shaft.

Further, grind agitating unit includes a plurality of agitators, every the agitator includes mount pad, a plurality of puddler and a plurality of grinding stirring vane, the mount pad has hollow installation passageway, and is a plurality of the puddler interval sets up the periphery of mount pad, every the one end of puddler with the mount pad is connected, every the other end of puddler with correspond grind stirring vane and connect, every the agitator pass through installation passageway with grind the (mixing) shaft cooperation installation.

Further, the vertical grinder further comprises a shaft seal; and the grinding stirring shaft and the inner wall of the mounting hole are sealed through the shaft seal.

Further, the vertical grinder also comprises pressure and temperature sensors; the detection element of the pressure and temperature sensor is arranged in the grinding chamber to detect the pressure and temperature in the grinding chamber.

The utility model provides a vertical grinding machine, through set up the second screen cloth in the discharging box, the second screen cloth is located between first screen cloth and the discharge gate, and the mesh size less than or equal to first screen cloth of mesh size of second screen cloth, can be when appearing "hourglass pearl" phenomenon, prevent to get into the grinding medium in the play material chamber along with the natural asphalt that grinds flows from the discharge gate, from this, can avoid grinding medium sneak into among the natural asphalt that grinds and influence the quality of pitch.

Drawings

Fig. 1 is a partial sectional view of a vertical grinder according to an embodiment of the present invention;

fig. 2 is a schematic view of the structure of the stirrer in fig. 1.

Reference numerals: a grinding cylinder 100; a grinding chamber 100 a; mounting holes 100 b; a discharge bin 110; the discharge chamber 110 a; the first discharging chamber 110 b; a second discharge chamber 110 c; a discharge port 110 d; a discharge port 110 e; a grinding media 120; a first screen 130; a second screen 140; a discharge stirring device 150; a discharge stirring drive source 151; a discharge stirring shaft 152; a discharge stirring blade 153; an outer housing 160; a support device 170; a grinding and stirring device 180; a grinding/stirring drive source 181; grinding the stirring shaft 182; a positioning member 183; a stirrer 184; a mounting block 1841; the mounting passage 1841 a; a stir bar 1842; the grinding agitation blades 1843; a shaft seal 190; a detection element 200; a heat conducting means 210.

Detailed Description

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

It should be noted that, in the case of no conflict, the technical features in the embodiments and examples of the present invention may be combined with each other, and the detailed description in the specific embodiment should be understood as an explanation of the gist of the present invention, and should not be construed as an improper limitation of the present invention.

For convenience of description, in the embodiment of the present invention, the vertical grinding machine is used to grind natural asphalt. It is understood that the vertical mill can also grind other solid or liquid materials, and is not limited herein.

An embodiment of the present invention provides a vertical grinder, referring to fig. 1, which includes a grinding cylinder 100, a discharge box 110, a first screen 130 and a second screen 140. The grinding cylinder 100 is provided with a grinding cavity 100a capable of accommodating grinding media 120, the discharge box 110 is provided with a discharge cavity 110a and a discharge hole 110d communicated with the discharge cavity 110a, the discharge box 110 is arranged at one side of the grinding cylinder 100, and the grinding cavity 100a is communicated with the discharge cavity 110 a. A first screen 130 is disposed between the grinding chamber 100a and the discharge chamber 110a to separate the grinding media 120 from the discharge chamber 110 a. The second screen 140 is disposed in the discharging cavity 110a and located between the first screen 130 and the discharging hole 110 d; the mesh size of the second screen 140 is equal to or smaller than the mesh size of the first screen 130.

Specifically, in order to ensure that the natural asphalt can be ground into particles with a diameter of 0.1um to 3.5um, a certain amount of grinding media 120 needs to be added into the grinding chamber 100a, and the grinding media 120 are commonly grinding balls. The grinding balls can be selected from different specifications or different specifications of combinations according to the actually required granularity of the natural asphalt particles in the natural asphalt mixed slurry, for example, the diameters of the commonly used grinding balls are 2mm, 2.5mm, 3mm and 3.5mm, etc. The ground natural asphalt is extruded into the discharging chamber 110a of the discharging box 110 through the first screen 130 for temporary storage. The first screen 130 may separate the grinding media 120 from the discharge chamber 110a to avoid the grinding media 120 from being squeezed into the discharge chamber 110a along with the ground pitch. Meanwhile, in the embodiment, the second screen 140 is further disposed in the discharging cavity 110a, the second screen 140 is located between the first screen 130 and the discharging hole 110d, and the mesh size of the second screen 140 is smaller than or equal to that of the first screen 130, when the "bead leakage" phenomenon occurs, the second screen 140 can prevent the grinding balls entering the discharging cavity 110a from flowing out from the discharging hole 110d along with the ground natural asphalt, and therefore, the grinding balls can be prevented from being mixed into the ground natural asphalt to affect the quality of the asphalt. In addition, the grinding balls filtered by the second screen 140 can be recycled, so that the loss of the grinding balls can be reduced, and the production cost can be saved.

Referring to fig. 1, the vertical mill of the present embodiment further includes a discharging stirring device 150, and the discharging stirring device 150 includes a discharging stirring driving source 151, a discharging stirring shaft 152, and a discharging stirring blade 153. The discharging stirring driving source 151 is disposed above the discharging box 110, one end of the discharging stirring shaft 152 is connected to an output shaft of the discharging stirring driving source 151, and the other end of the discharging stirring shaft 152 is located in the discharging cavity 110a and located on one side of the second screen 140 far away from the discharging hole 110 d. The discharging stirring blade 153 is connected to one end of the discharging stirring shaft 152 located in the discharging chamber 110 a. The discharging stirring driving source 151 of the present embodiment may include a driving motor and a speed adjusting and changing device.

Specifically, the second sieve 140 of this embodiment divides the discharging cavity 110a into a first discharging cavity 110b and a second discharging cavity 110c, the first discharging cavity 110b is located above the second discharging cavity 110c, one end of the discharging stirring shaft 152, which is far away from the output shaft of the discharging stirring driving source 151, is disposed in the first discharging cavity 110b, and the first sieve 130 is disposed between the grinding cavity 100a and the first discharging cavity 110b, and the discharging hole 110d is communicated with the second discharging cavity 110 c. The discharging stirring device 150 mainly stirs the natural asphalt temporarily stored in the discharging cavity 110a through the discharging stirring blade 153, so as to prevent the natural asphalt in the discharging cavity 110a from excessively aggregating to form powder lumps, and further influence discharging. In this embodiment, the discharging cavity 110a is actually divided into an upper layer and a lower layer, the upper layer is the first discharging cavity 110b, and the lower layer is the second discharging cavity 110c, so that the stirred natural asphalt can enter the second discharging cavity 110c from the first discharging cavity 110b by using gravity. It is understood that the second screen 140 may be vertically or obliquely arranged as required, and is not limited thereto. In another embodiment, the discharging stirring shaft 152 may also be disposed on a side of the second screen 140 close to the discharging port 110d, which is equivalent to filtering the grinding balls leaked from the grinding chamber 100a through the second screen 140 and then stirring the natural asphalt. In addition, the setting direction of the discharging stirring shaft 152 can be adjusted as required, for example, the discharging stirring shaft 152 can extend into the discharging cavity 110a from the side surface of the discharging box 110, and can also extend into the discharging cavity 110a from the bottom surface of the discharging box 110, which is not limited herein.

Referring to fig. 1, the discharging box 110 of the present embodiment further has a discharging opening 110e, and the discharging opening 110e is communicated with the first discharging cavity 110 b. Thereby facilitating cleaning of the grinding balls filtered out by the second screen 140. Further, the second screen 140 is detachably provided in the discharging chamber 110a, and the second screen 140 can be taken out from the discharging port 110e, so that it is possible to more conveniently clean the grinding balls. It is understood that, in practical use, a sliding door (not shown) is further provided at the discharge port 110e, and the sliding door is used for opening or closing the discharge port 110 e.

Referring to fig. 1, the vertical grinder of the present embodiment further includes a heat conducting device 210, wherein the heat conducting device 210 is configured to transfer heat to the grinding chamber 100 a.

Specifically, the heat conducting device 210 of the embodiment is a heat conducting pipe surrounding the outer wall of the grinding cylinder 100, and in practical use, the heat conducting pipe is filled with heat conducting oil (not shown in the figure), and the heat conducting oil circulates in the heat conducting pipe, so that heat can be transferred to the grinding cavity 100a, and the temperature of the product in the production process can be maintained, so as to prevent the natural asphalt from being solidified in the grinding process. In another embodiment, the heat conducting device 210 may also be a heat conducting cavity covered around the grinding cylinder 100, and the heat conducting cavity is filled with heat conducting oil, or the heat conducting device 210 may also be a resistance wire surrounding the outer wall of the grinding cylinder 100, and the resistance wire after being powered on generates heat to transfer the heat to the grinding cavity 100 a. Referring to fig. 1, the vertical grinder of the present embodiment includes an outer housing 160, a supporting device 170, and a grinding and stirring device 180. The outer casing 160 covers the grinding cylinder 100 to protect the grinding cylinder 100. The grinding and stirring device 180 includes a grinding and stirring drive source 181, a grinding and stirring shaft 182, a stirrer 184, and a positioning member 183. The top wall of the grinding chamber 100a is provided with a mounting hole 100b communicated with the grinding chamber 100a, the support device 170 is arranged above the outer shell 160, the grinding and stirring drive source 181 is arranged above the support device 170, one end of the grinding and stirring shaft 182 is connected with the output shaft of the grinding and stirring drive source 181, and the other end of the grinding and stirring shaft 182 passes through the support device 170 and the mounting hole 100b and is positioned in the grinding chamber 100 a. The support device 170 is configured to support the grinding agitation shaft 182. An agitator 184 is connected to the grinding agitation shaft 182 and is located in the grinding chamber 100 a. The positioning member 183 is connected to an end of the grinding/agitating shaft 182 remote from the output shaft of the grinding/agitating drive source 181. The grinding and stirring drive source 181 of the present embodiment may include a drive motor and a speed adjusting and changing device.

Specifically, the grinding stirring shaft of the existing vertical grinding machine is vertically arranged, and the grinding stirring shaft is suspended at one end far away from the output shaft of the grinding stirring driving source without any support, so that the grinding stirring shaft can swing in the process of grinding natural asphalt in the existing vertical grinding machine, and further the grinding effect is influenced. In order to solve this problem, in this embodiment, a positioning member 183 is disposed at an end of the grinding stirring shaft 182 away from the output shaft of the grinding stirring driving source 181, and the positioning member 183 may be a positioning cone. The positioning member 183 can stabilize the grinding stirring shaft 182 to reduce the deflection during grinding. In addition, in the actual use process, since the space of the bottom of the grinding chamber 100a, which is about 30cm high, is not agitated by the grinding stirring device 180, a portion of the grinding media 120 may be accumulated in the bottom space of the grinding chamber 100a, and the positioning member 183 may extend into the accumulated grinding media 120, so that the accumulated grinding media 120 may further prevent the positioning member 183 from deflecting, which is equivalent to that the positioning member 183 and the grinding media 120 form a centering structure together, thereby stabilizing the grinding stirring shaft 182 more effectively, and further reducing the deflection. Further, the positioning member 183 of the present embodiment is detachably connected to an end of the grinding stirring shaft 182 away from the output shaft of the grinding stirring driving source 181, such as a threaded connection, a plug connection, a snap connection, etc., so that the positioning member 183 can be easily installed or replaced.

To facilitate the installation of the agitator, referring to fig. 1 and 2, the grinding and stirring device 180 of the present embodiment is provided with a plurality of agitators 184, each agitator 184 includes a mounting base 1841, a plurality of stirring rods 1842 and a plurality of grinding and stirring blades 1843, the mounting base 1841 has a hollow mounting channel 1841a, the plurality of stirring rods 1842 are arranged at intervals on the periphery of the mounting base 1841, one end of each stirring rod 1842 is connected with the mounting base 1841, the other end of each stirring rod 1842 is connected with the corresponding grinding and stirring blade 1843, and each agitator 184 is installed in cooperation with the grinding and stirring shaft 182 through the mounting channel 1841 a.

Specifically, before the positioning member 183 is installed, each of the installation seats 1841 sequentially penetrates through the suspended end of the grinding stirring shaft 182 and is connected to the grinding stirring shaft 182 in a fixed manner, such as welding, or detachably connected, such as a flat key, a spline or the like, or screwed or pinned. A benefit of removably attaching mount 1841 to grinding agitator shaft 182 is that when mount 1841 is damaged, mount 1841 can be removed and replaced accordingly. Spacers (not shown) may also be placed between the mounts 1841 to prevent asphalt from binding adjacent mounts 1841 and causing separation difficulties when replacing mounts 1841. The mounting seat 1841 of the embodiment is annular, and the mounting seat 1841 may be an integral piece or formed by splicing two semi-rings. The milling cutter blades 1843 may be flat, curved, etc., and the milling cutter blades 1843 may be removably attached to the cantilevered end of the agitator bar 1842, such as by screwing the milling cutter blades 1843 to the agitator bar 1842, thereby allowing replacement of only the milling cutter blades 1843 without requiring replacement of the attachment block 1841 therewith in the event of damage to the milling cutter blades 1843. The grinding agitation blade 1843 has a guide slope on the rotation advance side. The grinding stirring blades 1843 and the grinding stirring shaft 182 may form an included angle, for example, in this embodiment, the grinding stirring blades 1843 located at the lowermost layer are configured to catch up with the grinding medium 120, and the grinding stirring blades 1843 located at the uppermost layer are configured to catch up with the grinding medium 120, so that the grinding medium 120 may be distributed relatively uniformly in the grinding cavity 100a, forming a suspension shape, and further improving the efficiency of grinding the material.

Referring to fig. 1, the vertical grinder of the present embodiment further includes a shaft seal 190, and the grinding stirring shaft 182 is sealed with the inner wall of the mounting hole 100b by the shaft seal 190. The shaft seal 190 can prevent the mixed liquid in grinding from seeping out of the grinding chamber 100a from the gap between the grinding stirring shaft 182 and the inner wall of the mounting hole 100 b.

Referring to fig. 1, the vertical grinder of the present embodiment further includes a pressure and temperature sensor, and a detection element 200 of the pressure and temperature sensor is disposed in the grinding chamber 100a to detect the pressure and temperature in the grinding chamber 100 a. Through the pressure and temperature detection, it can be known whether the filling amount of the grinding medium 120 in the grinding chamber 100a meets the grinding requirement or whether the pressure and temperature in the grinding chamber 100a are reduced due to "bead leakage" or the like, and a new grinding medium 120 needs to be supplemented in the grinding chamber 100 a.

The above embodiments are only specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A vertical grinding mill, characterized by comprising:

a grinding cylinder having a grinding chamber that can hold grinding media;

2. The vertical mill of claim 1, further comprising a discharge stirring device comprising a discharge stirring drive source, a discharge stirring shaft, a discharge stirring blade;

the discharging stirring driving source is arranged above the discharging box;

3. The vertical mill of claim 2, wherein the second screen divides the discharge chamber into a first discharge chamber and a second discharge chamber;

the discharge hole is communicated with the second discharge cavity.

4. The vertical mill of claim 3, wherein the discharge bin further has a discharge outlet; the discharge port is communicated with the first discharge cavity.

5. A vertical mill according to any one of claims 1 to 4, further comprising heat conducting means; the heat conducting means is configured to transfer heat to the grinding chamber.

6. The vertical grinding mill according to any one of claims 1 to 4, characterized in that the vertical grinding mill comprises an outer shell, a supporting device and a grinding and stirring device, wherein the outer shell is covered outside the grinding cylinder, and the grinding and stirring device comprises a grinding and stirring driving source, a grinding and stirring shaft, a stirrer and a positioning piece; the top wall of the grinding cavity is provided with a mounting hole communicated with the grinding cavity;

7. The vertical mill of claim 6, wherein the positioning member is detachably connected to an end of the grinding/agitating shaft remote from the output shaft of the grinding/agitating drive source.

8. The vertical mill of claim 6, wherein the grinding and stirring device comprises a plurality of stirrers, each stirrer comprises a mounting seat, a plurality of stirring rods and a plurality of grinding and stirring blades, the mounting seat is provided with a hollow mounting channel, the stirring rods are arranged at intervals on the periphery of the mounting seat, one end of each stirring rod is connected with the mounting seat, the other end of each stirring rod is connected with the corresponding grinding and stirring blade, and each stirrer is matched with the grinding and stirring shaft through the mounting channel.

9. The vertical mill of claim 6, further comprising a shaft seal; and the grinding stirring shaft and the inner wall of the mounting hole are sealed through the shaft seal.

10. The vertical mill according to any one of claims 1 to 4, further comprising pressure and temperature sensors; the detection element of the pressure and temperature sensor is arranged in the grinding chamber to detect the pressure and temperature in the grinding chamber.