A colloid mill for asphalt

Abstract

The present invention discloses a colloid mill for asphalt, which connects a mill cavity and a mill cover at the end of a mill shell body, realizes the setting of the internal moving knife combination and the static knife combination after the two are connected, and an adjustment drive module is arranged on the mill cover and inside the mill cavity to adjust the gap between the moving knife combination and the static knife combination. Through the above structural arrangement, the wear compensation of the cutter disc can be realized, and the asphalt grinding can be refined; furthermore, the present invention adopts a hinged fixing method for the mill cavity and the mill cover, and the two can be opened to facilitate the internal cleaning and maintenance; furthermore, the present invention arranges a heat preservation cavity on the mill cavity, and realizes the introduction of heat transfer oil through a connecting pipeline. Through this arrangement, the external medium can continuously keep the heat preservation cavity warm, and the asphalt is prevented from solidifying inside. The product structure design of the present invention is simple and novel, which can solve the technical drawbacks encountered by the current colloid mill and improve the grinding efficiency. It is an ideal colloid mill for asphalt.

Description

Technical Field

[0001] The invention belongs to the technical field of asphalt production equipment, and in particular relates to a colloid mill for asphalt. Background Art

[0002] As is known, in the existing asphalt processing field, grinding equipment is usually used to grind asphalt into required particles, and then the finished asphalt is formed after the emulsification process. In the processing process, colloid mill is widely used in the industry as a special grinding equipment. The technical problems existing in the existing technology are described as follows:

[0003] 1. The grinding disc in the grinding chamber of the existing grinding equipment has a single pattern and the grinding efficiency of the equipment is poor; 2. During actual operation, the gap between the moving blade assembly and the static blade assembly of the existing grinding disc cannot be adjusted. After working for a long time, the surface of the moving blade assembly and the static blade assembly are worn due to grinding, and the distance between the two increases, affecting the grinding efficiency; 3. The grinding area of ​​the existing colloid mill has no heating system. During the shutdown interval of asphalt grinding, asphalt solidification is likely to occur, which directly leads to a large load on the second startup of the colloid mill and may even damage the moving blade assembly and the static blade assembly.

[0004] In view of the shortcomings of the existing technology, as technicians in this industry, how to design a new type of colloid mill for asphalt through technical improvements, which can achieve high power and adjustable internal working gap, and at the same time realize anti-condensation and other functions is a technical problem that needs to be solved urgently by existing technicians in this industry. Summary of the invention

[0005] In order to achieve the above technical objectives, the present invention adopts the following scheme: a colloid mill for asphalt, which includes a mill shell main body, the end of the mill shell main body is connected to a mill cavity, the mill cavity is connected to a mill cover, a moving knife assembly and a stationary knife assembly are arranged inside the mill cavity, the stationary knife assembly is fixed on the main shaft and rotates with the main shaft, and the stationary knife assembly is fixed on the mill cover; an adjustment drive module is arranged on the mill cover, and the adjustment drive module drives the stationary knife assembly inside the mill cavity to move closer to the moving knife assembly to adjust the grinding distance; the mill cavity and the mill shell main body are fixed to one body, a hinge point is arranged on the outside of the mill cavity, and the mill cover is connected to the mill cover through a hinge shaft, and the mill cover can be opened on the mill cavity to present the internal structure;

[0006] The grinding cavity is provided with a plurality of heat-insulating cavities, and the heat-conducting oil is connected in the plurality of heat-insulating cavities to realize the heat-insulating connection of the grinding cavity.

[0007] The grinding cavity is provided with a discharge port, and the center of the grinding cover is provided with a feed port. The feeding and discharging port cooperate with each other to realize the feeding and discharging of asphalt and the grinding inside the grinding cavity.

[0008] The adjustment drive module includes a drive rod, which drives the toothed disc to rotate axially in the grinding cover body. The toothed disc drives the drive block to axially move the static knife mounting seat on the rear side of the drive block, and the static knife is locked and fixed on the static knife mounting seat.

[0009] The static knife assembly comprises three static knife blades, wherein the three static knife blades comprise a static knife outer ring, a static knife middle ring and a static knife inner ring. Grinding teeth are arranged on the working surface of the static knife assembly.

[0010] The outer ring of the stationary knife is provided with outer ring bevel groove teeth; the middle ring of the stationary knife is provided with radially evenly distributed outward-throwing centrifugal bevel grooves and external blocking grooves, the external blocking grooves and the outward-throwing centrifugal bevel grooves are evenly distributed and arranged at intervals, and the inner ring of the stationary knife is provided with internal centrifugal bevel grooves, the internal centrifugal bevel grooves and the outward-throwing centrifugal bevel grooves are arranged correspondingly, and the inner diameters of two adjacent internal centrifugal bevel grooves are respectively provided with inclined surfaces and arc surfaces; the inclined surfaces and arc surfaces are arranged at intervals.

[0011] The movable knife assembly is composed of three movable knife blades, which include a movable knife outer ring, a movable knife middle ring and a movable knife inner ring. Grinding teeth are arranged on the working surface of the movable knife assembly.

[0012] The outer ring of the movable knife is provided with outer bevel teeth, which are evenly distributed in a scattered manner and are formed with bevel grooves on the movable knife; the middle ring of the movable knife is provided with middle bevel teeth, which are evenly distributed in a scattered manner and are formed with bevel grooves on the movable knife; the inner ring of the movable knife is provided with inner bevel teeth, which are evenly distributed in a scattered manner and are formed with bevel grooves on the movable knife; the inclination angles of the outer bevel teeth, the middle bevel teeth and the inner bevel teeth gradually decrease.

[0013] A lubrication chamber is arranged at the center of the mill shell body, a main shaft passes through the lubrication chamber from left to right, and an oil filling hole is arranged on the top of the lubrication chamber, through which the main shaft can be continuously cooled.

[0014] The beneficial effects of the present invention are as follows: the present invention connects the grinding cavity and the grinding cover at the end of the grinding shell body through the above structural setting, and realizes the setting of the internal moving knife combination and the static knife combination after the two are connected, and an adjustment drive module is set on the grinding cover and inside the grinding cavity to adjust the gap between the moving knife combination and the static knife combination. Through the above structural setting, the wear compensation of the cutter disc can be realized, and the asphalt grinding can be refined; furthermore, the present invention adopts a hinged fixing method for the grinding cavity and the grinding cover, and the two can be opened to facilitate internal cleaning and maintenance; furthermore, the present invention sets a heat preservation cavity on the grinding cavity, and realizes the introduction of heat transfer oil through a connecting pipe. Through this setting, the external medium can continuously keep the heat preservation cavity warm to prevent the asphalt from solidifying inside. The product structure design of the present invention is simple and novel, which can solve the technical drawbacks encountered by the current colloid mill and improve the grinding efficiency. It is an ideal colloid mill for asphalt. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the main structure of the present invention;

[0016] Figure 2 It is a side view structural schematic diagram of the present invention;

[0017] Figure 3 This is a schematic diagram of the driving principle of the regulating driving module of the present invention;

[0018] Figure 4 It is a schematic diagram of the connection structure of the mill cavity, the mill shell body and the mill cover body of the present invention;

[0019] Figure 5 This is a schematic diagram of the internal structure of the grinding chamber of the present invention;

[0020] Figure 6 for Figure 5 A schematic diagram of the enlarged structure of the middle A area;

[0021] Figure 7 It is a schematic diagram of the movable knife assembly structure;

[0022] Figure 8 It is a schematic diagram of the static knife assembly structure;

[0023] Fig. 9 This is a schematic diagram of the main structure of the static knife center circle;

[0024] Fig.10 for Figure 8 A schematic diagram of the structure of the middle B region;

[0025] Fig.11 It is a schematic diagram of the lateral splitting structure of the moving knife assembly;

[0026] Fig.12 This is a schematic diagram of the lateral splitting structure of the static knife assembly;

[0027] In the accompanying drawings, 1. mill shell body, 11. lubrication chamber, 12. oil filling hole, 2. spindle, 3. mill cavity, 31. discharge port, 32. heat transfer oil inlet, 33. heat transfer oil outlet, 34. bottom insulation cavity, 35. top insulation cavity, 36. connecting pipe, 4. mill cover, 41. feed port, 5. adjustment drive module, 51. drive rod, 52. toothed disc, 53. inner drive gear, 54. outer drive gear, 55. hand wheel, 56. drive block, 57. static knife mounting seat, 6. static knife assembly, 61. Stationary knife outer ring, 611, outer ring bevel groove teeth, 62, stationary knife middle ring, 621, centrifugal bevel groove, 622, large external blocking groove, 623, small external blocking groove, 63, stationary knife inner ring, 631, internal centrifugal bevel groove, 632, arc surface, 633, inclined surface, 7, moving knife assembly, 71, moving knife outer ring, 711, external bevel teeth, 72, moving knife middle ring, 721, middle bevel teeth, 73, moving knife inner ring, 731, internal bevel teeth, 8, driving motor, 81, coupling, 82, base, 9, grinding gap. DETAILED DESCRIPTION

[0028] See also Figure 1 As shown, a colloid mill for asphalt includes a mill shell body 1, the end of the mill shell body 1 is connected to a mill cavity 2, the mill cavity 1 is connected to a mill cover 4, a moving knife assembly 7 and a stationary knife assembly 6 are arranged inside the mill cavity 3, the stationary knife assembly 6 is fixed on the main shaft 2 and rotates with the main shaft 2, and the stationary knife assembly 6 is fixed on the mill cover 4; Figure 1 As shown, the colloid mill for asphalt is connected to an external driving motor 8 via a coupling 81, and the driving motor 8 and the mill shell body 1 are fixed together on a base.

[0029] The grinding cover 4 is provided with an adjustment drive module 5, and the function of the adjustment drive module 5 is to drive the static knife assembly 6 inside the grinding chamber 3 to move closer to the moving knife assembly 7 to adjust the grinding distance; its specific structure is as follows Figure 5 and Figure 6As shown, the adjustment drive module 5 includes a vertically arranged drive rod 51. Driven by a hand wheel 55, the drive rod 51 drives the toothed disc 52 to rotate axially in the grinding cover body 4. The outer diameter of the toothed disc 52 is provided with an outer drive tooth 54 that cooperates with the drive rod 51. The inner diameter of the toothed disc 52 is provided with an inner drive tooth 53 that cooperates with the drive block 56 to drive the drive block 56 to move axially. The drive block 56 moves axially while pushing the rear static knife mounting seat 57 to move axially. The static knife mounting seat 57 is fixed with a static knife assembly 6, so as to adjust the distance between the static knife assembly 6 and the moving knife assembly 7. Through the above structural setting, after long-term work, the moving knife assembly 7 and the static knife assembly 6 cause surface wear due to grinding. When the distance between the two increases, the wear compensation can be achieved by adjusting the gap. Moreover, the above adjustment can be used to grind and refine asphalt of different particle sizes.

[0030] The grinding chamber 3 and the grinding shell body 1 described in the present invention are fixed together, and a hinge point is arranged on the outside of the grinding chamber 3, which is connected to the grinding cover 4 through a hinge shaft. The grinding cover 4 can be opened on the grinding chamber to present the internal structure. Through this design, it is convenient for maintenance personnel to open the entire working area and to maintain and clean the inside of the grinding chamber 3.

[0031] The product of the present invention is provided with a discharge port 31 on the grinding chamber 3, and a feed port 41 is provided at the center of the grinding cover 4. The feed port 41 and the discharge port 31 are interconnected and pass through the entire grinding chamber 3, thereby realizing the entry and exit of asphalt and the grinding inside the grinding chamber 3.

[0032] The design focus of the present invention is that the static knife assembly 6 comprises three static knife blades, the three static knife blades comprise a static knife outer ring 61, a static knife middle ring 62 and a static knife inner ring 63, and the working surface of the static knife assembly is provided with grinding teeth, such as Fig.12 As shown, the outer ring 61 of the static knife is provided with outer ring bevel teeth 611; the static knife middle ring 62 is provided with radially evenly distributed outward centrifugal bevel grooves 621 and external blocking grooves, the external blocking grooves are arranged at the outer diameter, and are composed of a large external blocking groove 622 and a small external blocking groove 623, the large external blocking groove 622 and the small external blocking groove 623 are arranged at intervals, and at the same time, the whole composed of the large external blocking groove 622 and the small external blocking groove 623 and the outward centrifugal bevel groove 621 are also evenly distributed and arranged at intervals; the static knife inner ring 63 is provided with an internal centrifugal bevel groove 631, the internal centrifugal bevel groove 631 and the outward centrifugal bevel groove 621 are arranged correspondingly, and the inner diameters of the two adjacent internal centrifugal bevel grooves 631 are respectively provided with inclined surfaces 633 and arc surfaces 632; the inclined surfaces 633 and arc surfaces 632 are arranged at intervals, and through this arrangement, the asphalt is made to collide with the grinding surface of the static knife combination as much as possible;

[0033] like Fig.11 As shown, the movable knife assembly 7 comprises three movable knife blades, and the three movable knife blades comprise an outer movable knife ring 71, a middle movable knife ring 72 and an inner movable knife ring 73. Grinding teeth are arranged on the working surface of the movable knife assembly.

[0034] The outer ring of the movable knife is provided with outer bevel teeth 711, and the outer bevel teeth 711 are evenly distributed in a scattered manner, and are formed with bevel grooves on the movable knife; the middle ring 72 of the movable knife is provided with middle bevel teeth 721, and the middle bevel teeth are evenly distributed in a scattered manner, and are formed with bevel grooves on the movable knife; the inner ring 73 of the movable knife is provided with inner bevel teeth 731, and the inner bevel teeth 731 are evenly distributed in a scattered manner, and are formed with bevel grooves on the movable knife; the design focus of the movable knife assembly 7 is that the inclination angles of the outer bevel teeth 711, the middle bevel teeth 721 and the inner bevel teeth 731 gradually decrease.

[0035] Through the above structure setting, such as Figure 6 As shown, the moving blade assembly 7 and the stationary blade assembly 6 are arranged opposite to each other, and the grinding efficiency can be effectively improved by performing multiple collision grinding on the complex surface formed by the multiple groove structures described above. The user can adjust the grinding amount accuracy by adjusting the size of the grinding gap 9.

[0036] Based on the above structural settings, when this product is used again, there is no heating system in the grinding area of ​​the colloid mill. During the shutdown period of asphalt grinding, asphalt solidification is likely to occur, which directly leads to a large load on the second startup of the colloid mill and may even damage the moving knife combination and the static knife combination.

[0037] The product is designed with the following structure: a top insulation chamber 35 and a bottom insulation chamber 34 are provided on the grinding chamber 3, and the two insulation chambers are connected together through a connecting pipe 36, and then a heat transfer oil inlet 32 ​​and a heat transfer oil outlet 33 are provided to form a passage between the two insulation chambers. Based on the above structural setting, heat transfer oil heating can be realized to prevent asphalt condensation inside the grinding chamber 3.

[0038] Furthermore, since the spindle rotates continuously at high temperature when the device is running, a lubrication chamber 11 is provided at the center of the grinding shell body 1, a spindle 2 passes through the lubrication chamber 11 from left to right, and an oil filling hole 12 is provided at the top of the lubrication chamber, through which the spindle can be continuously cooled.

[0039] In summary, the product structure of the present invention is simple and novel in design. It can solve the technical drawbacks of the current colloid mill and improve the grinding efficiency. It is an ideal colloid mill for asphalt.

Claims

1. A colloid mill for asphalt, comprising a mill shell body, the end of which is connected to a mill cavity, characterized in that: The grinding cavity is connected to the grinding cover, and a moving knife assembly and a stationary knife assembly are arranged inside the grinding cavity. The moving knife assembly is fixed on the main shaft and rotates with the main shaft, and the stationary knife assembly is fixed on the grinding cover; an adjustment drive module is arranged on the grinding cover, and the adjustment drive module drives the stationary knife assembly inside the grinding cavity to move closer to the moving knife assembly to adjust the grinding distance; the grinding cavity and the grinding shell body are fixed to one body, and a hinge point is arranged outside the grinding cavity, which is connected to the grinding cover through a hinge shaft, and the grinding cover can be opened on the grinding cavity to realize the presentation of the internal structure; The grinding cavity is provided with a plurality of heat preservation cavities, and the heat conduction oil is connected to the plurality of heat preservation cavities to realize the heat preservation connection of the grinding cavity; The static knife assembly comprises three static knife blades, the three static knife blades comprise a static knife outer ring, a static knife middle ring and a static knife inner ring, and a grinding tooth is arranged on the working surface of the static knife assembly; The outer ring of the stationary knife is provided with outer ring bevel groove teeth; the middle ring of the stationary knife is provided with radially evenly distributed outward centrifugal bevel grooves and external blocking grooves, the external blocking grooves and the outward centrifugal bevel grooves are evenly distributed and arranged at intervals, the inner ring of the stationary knife is provided with internal centrifugal bevel grooves, the internal centrifugal bevel grooves and the outward centrifugal bevel grooves are arranged correspondingly, and the inner diameters of two adjacent internal centrifugal bevel grooves are respectively provided with inclined surfaces and arc surfaces; the inclined surfaces and arc surfaces are arranged at intervals; The movable knife assembly is composed of three movable knife blades, which include a movable knife outer ring, a movable knife middle ring and a movable knife inner ring. The working surface of the movable knife assembly is provided with grinding teeth. The outer ring of the movable knife is provided with outer bevel teeth, which are evenly distributed in a scattered manner and are formed with bevel grooves on the movable knife; the middle ring of the movable knife is provided with middle bevel teeth, which are evenly distributed in a scattered manner and are formed with bevel grooves on the movable knife; the inner ring of the movable knife is provided with inner bevel teeth, which are evenly distributed in a scattered manner and are formed with bevel grooves on the movable knife; the inclination angles of the outer bevel teeth, the middle bevel teeth and the inner bevel teeth gradually decrease.

2. A colloid mill for asphalt as claimed in claim 1, characterized in that: The grinding cavity is provided with a discharge port, and the center of the grinding cover is provided with a feed port. The feeding and discharging port cooperate with each other to realize the feeding and discharging of asphalt and the grinding inside the grinding cavity.

3. The colloid mill for asphalt according to claim 1, characterized in that: The adjustment drive module includes a drive rod, which drives the toothed disc to rotate axially in the grinding cover body. The toothed disc drives the drive block to axially move the static knife mounting seat on the rear side of the drive block, and the static knife is locked and fixed on the static knife mounting seat.

4. The colloid mill for asphalt according to claim 1, characterized in that: A lubrication chamber is arranged at the center of the mill shell body, a main shaft passes through the lubrication chamber from left to right, and an oil filling hole is arranged on the top of the lubrication chamber, through which the main shaft can be continuously cooled.

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