Vertical grinding machine

Abstract

The utility model provides a vertical grinder which comprises a grinding cylinder, a driving motor, a driving shaft, an upper-stage separation rotor, a lower-stage grinding rotor and a separator assembly, and grinding media are mainly distributed in the grinding cylinder in a lower concentrated and upper dispersed mode due to gravity. Due to the fact that the feeding port is formed below the grinding cylinder, after entering the grinding cylinder, materials firstly pass through the lower portion where the grinding media are densely stacked, are ground in a concentrated mode on the lower portion of the grinding cylinder and are continuously fed through the feeding pump, and the materials, close to the feeding port, of the grinding cylinder flow towards the upper portion of the grinding cylinder. And the materials enter the next process through the first discharging channel, the second discharging channel and the third discharging channel. According to the structure of feeding from the bottom of the grinding cylinder and discharging from the axis, the grinding efficiency of the equipment is greatly improved, and the phenomenon that materials enter from the upper part of the grinding cylinder and grinding media are accumulated at the lower part of the grinding cylinder, so that the materials are not sufficiently ground is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical instrument technical field especially relates to a vertical grinder. BACKGROUND

[0002] The vertical grinder is a kind of equipment widely used in material crushing, fine grinding and dispersion, especially has important role in chemical industry, mineral, pharmacy, ceramics and other industries.

[0003] The vertical grinder of prior art generally adopts the upper end of grinding cylinder to feed, and the lower end or shaft center of grinding cylinder to discharge. Under the action of gravity, the above structure is prone to cause material to gather in the upper of grinding cylinder, and grinding medium to gather in the lower of grinding cylinder, finally causes material to be insufficiently ground. SUMMARY

[0004] Therefore, the utility model discloses a vertical grinder, which aims to solve the technical problem that the upper end of grinding cylinder is fed, the lower end or shaft center of grinding cylinder is discharged in the prior art, material is prone to gather in the upper of grinding cylinder, grinding medium is prone to gather in the lower of grinding cylinder, and material is finally insufficiently ground.

[0005] The utility model provides a vertical grinder, including grinding cylinder, drive motor, drive shaft, upper separation rotor, lower grinding rotor and separator assembly, the drive shaft includes first end and second end, the first end is connected with the power output end of drive motor, the second end extends to the inside of grinding cylinder, the separator assembly, upper separation rotor and lower grinding rotor all are connected with the second end, the upper separation rotor is hollow structure, the separator assembly is located in the upper separation rotor, the upper separation rotor and lower grinding rotor are stacked from top to bottom, the upper separation rotor forms with first discharge channel, the separator assembly forms with second discharge channel, the drive shaft forms with third discharge channel, first discharge channel, second discharge channel and third discharge channel are sequentially communicated, the grinding cylinder is equipped with feed inlet, the feed inlet is located below lower grinding rotor, the feed inlet is used for material to enter the grinding cylinder and sequentially discharge from first discharge channel, second discharge channel and third discharge channel.

[0006] Further, the upper separation rotor comprises a separation rotor spacer, a separation rotor pin, a separation rotor fixed disc, a separation rotor plug-in rod and an upper gland, the separation rotor fixed disc is connected with the driving shaft, the separation rotor plug-in rod is provided with a plurality of separation rotor plug-in rods, the plurality of separation rotor plug-in rods are arranged on the separation rotor fixed disc in a uniform interval around the central axis of the driving shaft, the separation rotor plug-in rod extends along the vertical direction, the separation rotor spacer and the separation rotor pin are alternately stacked on the separation rotor plug-in rod, the first discharge channel is formed between the adjacent two separation rotor plug-in rods, the upper gland is connected to one end of the separation rotor plug-in rod away from the separation rotor fixed disc, and the upper gland is used for pressing the separation rotor spacer and the separation rotor pin on the separation rotor plug-in rod.

[0007] Further, the lower grinding rotor comprises a grinding rotor spacer, a grinding rotor pin, a grinding rotor fixed disc, a grinding rotor plug-in rod and a lower gland, the grinding rotor fixed disc is connected with the driving shaft, the grinding rotor plug-in rod is provided with a plurality of grinding rotor plug-in rods, the plurality of grinding rotor plug-in rods are arranged on the grinding rotor fixed disc in a uniform interval around the central axis of the driving shaft, the grinding rotor plug-in rod extends along the vertical direction, the grinding rotor spacer and the grinding rotor pin are alternately stacked on the grinding rotor plug-in rod, and the lower gland is connected to one end of the grinding rotor plug-in rod away from the grinding rotor fixed disc.

[0008] Further, the separator assembly comprises an inner separator and an outer separator, the inner separator and the outer separator are connected with the driving shaft, the outer separator is provided with a plurality of arc-shaped plates, the plurality of arc-shaped plates are arranged in a uniform interval around the central axis of the driving shaft, an outer guide channel is formed between the adjacent two arc-shaped plates, the inner separator is provided with a plurality of threaded plates, the plurality of threaded plates are arranged in a uniform interval around the central axis of the driving shaft, an inner guide channel is formed between the adjacent two threaded plates, and the outer guide channel and the inner guide channel are communicated to form the second discharge channel.

[0009] Further, the inner separator and the outer separator are both provided with a first key groove, the driving shaft is provided with a second key groove corresponding to the first key groove, and the first key groove and the second key groove can be inserted with a key pin to limit the relative rotation of the inner separator and the outer separator with respect to the driving shaft.

[0010] Further, the inner guide channel is provided with a first through hole, and the driving shaft is provided with a second through hole, and the first through hole and the second through hole are used to communicate the second discharge channel and the third discharge channel.

[0011] Further, the separator assembly further comprises an upper fixed plate and a lower fixed plate, the lower fixed plate is connected with the driving shaft, the outer separators are stacked on the lower fixed plate, the upper fixed plate is connected with the uppermost outer separator, and the upper fixed plate is used for pressing the outer separators on the driving shaft.

[0012] Beneficial effects: the vertical grinder provided by the utility model, which comprises a grinding cylinder, a driving motor, a driving shaft, a senior separation rotor, a junior grinding rotor and a separator assembly, grinding medium in the grinding cylinder is mainly concentrated at the lower part and dispersed at the upper part due to gravity. Since the feeding port is arranged below the grinding cylinder, after the material enters the grinding cylinder, it firstly passes through the lower part of the accumulated dense grinding medium, is concentrated and ground at the lower part of the grinding cylinder, is continuously fed by the feeding pump, and the material close to the feeding port of the grinding cylinder flows to the upper part of the grinding cylinder. The material enters a next process through the first discharge channel, the second discharge channel and the third discharge channel. The structure of feeding from the bottom of the grinding cylinder and discharging through the shaft center greatly improves the grinding efficiency of the equipment and avoids the phenomenon that the material enters the upper part of the grinding cylinder and the grinding medium accumulates in the lower part of the grinding cylinder, so that the material is not fully ground. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a whole structure schematic view of the vertical grinder of the utility model;

[0014] Figure 2 It is a sectional view of the vertical grinder of the utility model;

[0015] Figure 3 It is Figure 2 It is an enlarged view of A in the middle;

[0016] Figure 4 It is a structure schematic view of the connection of the senior separation rotor and the junior grinding rotor to the driving shaft;

[0017] Figure 5 It is a partial structure schematic view of the connection of the senior separation rotor and the junior grinding rotor to the driving shaft;

[0018] Figure 6 It is a structure schematic view of the outer separator;

[0019] Figure 7 It is a structure schematic view of the inner separator;

[0020] Figure 8 It is a structure schematic view of the driving shaft.

[0021] In the figure: 1, grinding cylinder; 11, feed inlet; 2, driving motor; 3, driving shaft; 30, third discharge channel; 31, first end; 32, second end; 33, second key groove; 34, second through hole; 4, upper separation rotor; 41, separation rotor spacer; 42, separation rotor bar pin; 43, separation rotor fixed disc; 44, separation rotor plug-in rod; 45, upper gland; 40, first discharge channel; 5, lower grinding rotor; 51, grinding rotor spacer; 52, grinding rotor bar pin; 53, grinding rotor fixed disc; 54, grinding rotor plug-in rod; 55, lower gland; 6, separator assembly; 60, second discharge channel; 61, inner separator; 611, threaded plate; 612, inner guide channel; 613, first through hole; 62, outer separator; 621, arc plate; 622, outer guide channel; 63, first key groove; 64, key pin; 65, upper fixed plate; 66, lower fixed plate. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0023] Please refer to Figures 1 to 8 The utility model provides a vertical grinding machine, including grinding cylinder 1, driving motor 2, driving shaft 3, upper separation rotor 4, lower grinding rotor 5 and separator assembly 6, driving shaft 3 includes first end 31 and second end 32, first end 31 is connected with the power output end of driving motor 2, second end 32 extends to grinding cylinder 1, separator assembly 6, upper separation rotor 4 and lower grinding rotor 5 all are connected with second end 32, upper separation rotor 4 is hollow structure, separator assembly 6 is located in upper separation rotor 4, upper separation rotor 4 and lower grinding rotor 5 are stacked from top to bottom, upper separation rotor 4 is formed with first discharge channel 40, separator assembly 6 is formed with second discharge channel 60, driving shaft 3 is formed with third discharge channel 30, first discharge channel 40, second discharge channel 60 and third discharge channel 30 are sequentially communicated, grinding cylinder 1 is equipped with feed inlet 11, feed inlet 11 is located below lower grinding rotor 5, feed inlet 11 is used for the material to enter grinding cylinder 1 and sequentially discharge from first discharge channel 40, second discharge channel 60 and third discharge channel 30.

[0024] In the present application, the grinding cylinder 1 is a hollow barrel structure, the grinding cylinder 1 is used to contain materials, the bottom end of the grinding cylinder 1 is provided with a feeding port 11, the feeding port 11 is used to deliver materials to the inside of the grinding cylinder 1. When the materials need to be ground, the materials are delivered to the bottom of the grinding cylinder 1 through the feeding port 11. The driving shaft 3 rotates, drives the upper separation rotor 4, the lower grinding rotor 5 and the separator assembly 6 to rotate, so that the materials can rotate more uniformly. The grinding medium and the materials are mixed by the lower grinding rotor 5, the grinding medium is continuously impacted, rubbed and extruded by the centrifugal force generated by the high-speed rotation of the lower grinding rotor 5, so that the extrusion force, the shear force and the impact force are generated between the grinding medium and the materials, the agglomeration between the materials is broken, the fineness is broken, and the purpose of reducing the particle size of the materials is achieved. At the same time, the upper separation rotor 4 is driven to rotate by the driving shaft 3, the upper separation rotor 4 further disperses the materials and the grinding medium. Because the particle size of the materials is small, the negative pressure generated when the separation assembly rotates sucks the materials from the grinding cylinder 1 into the rotating shaft, and the materials pass through the first discharge channel 40, the second discharge channel 60 and the third discharge channel 30 during the process. The grinding medium is left in the grinding cylinder 1. The materials are transported upward along the inner wall of the grinding cylinder 1 by the vortex generated when the driving shaft 3, the upper separation rotor 4 and the separator assembly 6 rotate, so that the materials and the grinding medium will not accumulate at the bottom of the grinding cylinder 1, so that the grinding medium is uniformly distributed in the grinding cylinder 1, and the utilization rate of the grinding medium is improved.

[0025] In one possible implementation, the upper separation rotor 4 includes a separation rotor spacer sleeve 41, a separation rotor pin 42, a separation rotor fixed disc 43, a separation rotor plug-in rod 44 and an upper gland 45, the separation rotor fixed disc 43 is connected with the driving shaft 3, the separation rotor plug-in rod 44 is provided with a plurality of separation rotor plug-in rods 44 which are uniformly and spaced apart around the central axis of the driving shaft 3 and arranged on the separation rotor fixed disc 43, the separation rotor plug-in rod 44 extends along the vertical direction, the separation rotor spacer sleeve 41 and the separation rotor pin 42 are alternately stacked on the separation rotor plug-in rod 44, the first discharge channel 40 is formed between the adjacent two separation rotor plug-in rods 44, the upper gland 45 is connected to one end of the separation rotor plug-in rod 44 away from the separation rotor fixed disc 43, and the upper gland 45 is used to press the separation rotor spacer sleeve 41 and the separation rotor pin 42 on the separation rotor plug-in rod 44. In the present embodiment, the separation rotor fixed disc 43 is arranged at the bottom end of the separation rotor plug-in rod 44, and the upper gland 45 can be fixed at the top end of the plurality of separation rotor plug-in rods 44 by bolts.

[0026] In one possible embodiment, the lower grinding rotor 5 comprises a grinding rotor spacer 51, a grinding rotor pin 52, a grinding rotor fixed disc 53, a grinding rotor plug-in rod 54 and a lower pressing cover 55. The grinding rotor fixed disc 53 is connected with the driving shaft 3. The grinding rotor plug-in rod 54 is provided with a plurality of grinding rotor plug-in rods 54 which are evenly spaced around the central axis of the driving shaft 3 and arranged on the grinding rotor fixed disc 53. The grinding rotor plug-in rod 54 extends in the vertical direction. The grinding rotor spacer 51 and the grinding rotor pin 52 are alternately stacked on the grinding rotor plug-in rod 54. The lower pressing cover 55 is connected to one end of the grinding rotor plug-in rod 54 away from the grinding rotor fixed disc 53. The lower pressing cover 55 is used to press the grinding rotor spacer 51 and the grinding rotor pin 52 tightly on the grinding rotor plug-in rod 54. In this embodiment, the grinding rotor fixed disc 53 is arranged at the top end of the grinding rotor plug-in rod 54, and the lower pressing cover 55 can be fixed at the bottom end of the plurality of separate rotor plug-in rods 44 by bolts. In order to further strengthen the connection between the upper separate rotor 4 and the lower grinding rotor 5, in combination with the previous embodiment, the separate rotor fixed disc 43 and the grinding rotor fixed disc 53 can be connected by bolts.

[0027] The upper separate rotor 4 and the lower grinding rotor 5 in the above two embodiments adopt a spliced hollow structure, are manufactured and installed separately, and reduce the production and installation difficulty of rotor parts. The hollow structure reduces the overall weight of the rotor and reduces the load of the motor, thereby reducing the energy consumption of the equipment and improving the use efficiency of the driving motor 2.

[0028] In an embodiment, the separator assembly 6 comprises an inner separator 61 and an outer separator 62, both of which are connected to the drive shaft 3, the outer separator 62 is provided with a plurality of arc-shaped plates 621, which are evenly spaced around the central axis of the drive shaft 3, and the outer guiding channel 622 is formed between adjacent arc-shaped plates 621, the inner separator 61 is provided with a plurality of threaded plates 611, which are evenly spaced around the central axis of the drive shaft 3, and the inner guiding channel 612 is formed between adjacent threaded plates 611, and the outer guiding channel 622 and the inner guiding channel 612 are connected to form the second discharge channel 60. In the grinding process, the upper separation rotor 4 and the lower grinding rotor 5 are driven by the drive shaft 3, and the grinding medium is retained in the grinding cylinder 1, and the material reaches the position of the outer separator 62 along the inner wall of the grinding cylinder 1 due to the vortex generated when the drive shaft 3 rotates, and the material is sucked into the outer guiding channel 622 by the outer separator 62 through the first discharge channel 40. A small amount of grinding medium and material with large mass (or large volume) that enters the outer separator 62 is thrown into the upper separation rotor 4 under the action of centrifugal force, and then thrown back into the grinding cylinder 1 through the first discharge channel 40, thereby achieving the purpose of separating the grinding medium, and the material with small particle size is sucked into the inner guiding channel 612 by the inner separator 61 from the outer guiding channel 622. In order to further extract the material, the third discharge channel 30 can be connected to an external suction device. The third discharge channel 30 is provided with suction force by the suction device, and the material discharge path is the feeding port 11-grinding cylinder 1-first discharge channel 40-second discharge channel 60-third discharge channel 30, so that the material can be screened and discharged after grinding. Since the outer guiding channel 622 and the inner guiding channel 612 are both spiral, the spiral force generated by the rotation of the outer guiding channel 622 and the inner guiding channel 612 makes the material move in a specific direction along the spiral track, effectively controls the flow direction of the material, avoids the material from being blocked or flowing unevenly during processing, and ensures the continuity and uniformity of the material during processing.

[0029] In an embodiment, the inner separator 61 and the outer separator 62 are both provided with a first key groove 63, the drive shaft 3 is provided with a second key groove 33 corresponding to the first key groove 63, and the first key groove 63 and the second key groove 33 can be inserted with a key pin 64 to limit the rotation of the inner separator 61 and the outer separator 62 relative to the drive shaft 3. The first key groove 63 and the second key groove 33 in this embodiment can improve the connection strength of the inner separator 61 and the outer separator 62 when connected to the drive shaft 3.

[0030] In one possible implementation, a first through hole 613 is formed in the inner guide channel 612, and a second through hole 34 is formed in the driving shaft 3, the first through hole 613 and the second through hole 34 being used to connect the second discharge channel 60 and the third discharge channel 30. Specifically, the second through hole 34 is in the shape of a strip. When the inner separator 61 is provided with a plurality of inner separators, the second through hole 34 in the shape of a strip can connect a plurality of first through holes 613.

[0031] In one possible implementation, the separator assembly 6 further comprises an upper fixing plate 65 and a lower fixing plate 66, the lower fixing plate 66 being connected to the driving shaft 3, and a plurality of the outer separators 62 being stacked on the lower fixing plate 66, the upper fixing plate 65 being connected to the uppermost outer separator 62, and the upper fixing plate 65 being used to press the plurality of outer separators 62 against the driving shaft 3. Since the grinding machine is relatively large, it is difficult to manufacture the outer separator 62 in one piece, and the cost is high. Therefore, a plurality of outer separators 62 can be spliced. In this embodiment, the upper fixing plate 65 and the lower fixing plate 66 are provided to improve the connection strength of the plurality of outer separators 62 when spliced.

[0032] It is apparent for those skilled in the art that the present application is not limited to the details of the foregoing exemplary embodiments, and the present application can be implemented in other concrete forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be considered in all aspects as illustrative and not restrictive, and the scope of the present application is defined by the appended claims rather than the foregoing description, and it is intended to encompass all changes falling within the meaning and range of equivalents of the claims. Any reference signs in the claims should not be considered as limiting the claims involved.

[0033] The above-described embodiments are only used to illustrate the technical solutions of the present application, rather than limit the technical solutions of the present application; even though the present application has been described in detail with reference to the foregoing embodiments, those ordinarily skilled in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacements to some technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A vertical mill characterized by: The application relates to a grinding cylinder (1), a driving motor (2), a driving shaft (3), a primary separation rotor (4), a secondary grinding rotor (5) and a separator assembly (6), the driving shaft (3) comprises a first end (31) and a second end (32), the first end (31) is connected with the power output end of the driving motor (2), the second end (32) extends into the grinding cylinder (1), the separator assembly (6), the primary separation rotor (4) and the secondary grinding rotor (5) are all connected with the second end (32), the primary separation rotor (4) is a hollow structure, the separator assembly (6) is located in the primary separation rotor (4), the primary separation rotor (4) and the secondary grinding rotor (5) are arranged in a stack from top to bottom, the primary separation rotor (4) is formed with a first discharge channel (40), the separator assembly (6) is formed with a second discharge channel (60), the driving shaft (3) is formed with a third discharge channel (30), the first discharge channel (40), the second discharge channel (60) and the third discharge channel (30) are sequentially communicated, the grinding cylinder (1) is provided with a feeding port (11), the feeding port (11) is located below the secondary grinding rotor (5), and the feeding port (11) is used for feeding materials into the grinding cylinder (1) and then discharging the materials from the first discharge channel (40), the second discharge channel (60) and the third discharge channel (30) in sequence.

2. The vertical mill according to claim 1, characterized in that: The primary separation rotor (4) comprises a separation rotor spacer sleeve (41), a separation rotor pin (42), a separation rotor fixing disc (43), a separation rotor plug-in rod (44) and an upper gland (45), the separation rotor fixing disc (43) is connected with the driving shaft (3), the separation rotor plug-in rod (44) is provided with a plurality of separation rotor plug-in rods (44) which are uniformly and spacedly arranged on the separation rotor fixing disc (43) around the central shaft of the driving shaft (3), the separation rotor plug-in rod (44) extends along the vertical direction, the separation rotor spacer sleeve (41) and the separation rotor pin (42) are alternately stacked on the separation rotor plug-in rod (44), the first discharge channel (40) is formed between two adjacent separation rotor plug-in rods (44), the upper gland (45) is connected to one end of the separation rotor plug-in rod (44) away from the separation rotor fixing disc (43), and the upper gland (45) is used for pressing the separation rotor spacer sleeve (41) and the separation rotor pin (42) on the separation rotor plug-in rod (44).

3. The vertical mill according to claim 1, characterized in that: The lower grinding rotor (5) comprises a grinding rotor spacer sleeve (51), a grinding rotor bar pin (52), a grinding rotor fixed disc (53), a grinding rotor plug-in rod (54) and a lower pressing cover (55), the grinding rotor fixed disc (53) is connected with the driving shaft (3), the grinding rotor plug-in rod (54) is provided with a plurality of, a plurality of the grinding rotor plug-in rods (54) are uniformly and spacedly arranged on the grinding rotor fixed disc (53) around the central axis of the driving shaft (3), the grinding rotor plug-in rod (54) extends along the vertical direction, the grinding rotor spacer sleeve (51) and the grinding rotor bar pin (52) are alternately stacked on the grinding rotor plug-in rod (54), and the lower pressing cover (55) is connected to one end of the grinding rotor plug-in rod (54) away from the grinding rotor fixed disc (53), and the lower pressing cover (55) is used for pressing the grinding rotor spacer sleeve (51) and the grinding rotor bar pin (52) on the grinding rotor plug-in rod (54).

4. The vertical mill of claim 1, wherein: The separator assembly (6) comprises an inner separator (61) and an outer separator (62), the inner separator (61) and the outer separator (62) are connected with the driving shaft (3), the outer separator (62) is provided with a plurality of arc-shaped plates (621), a plurality of the arc-shaped plates (621) are uniformly and spacedly arranged around the central axis of the driving shaft (3), an outer guiding channel (622) is formed between adjacent two arc-shaped plates (621), the inner separator (61) is provided with a plurality of threaded plates (611), a plurality of the threaded plates (611) are uniformly and spacedly arranged around the central axis of the driving shaft (3), an inner guiding channel (612) is formed between adjacent two threaded plates (611), and the outer guiding channel (622) and the inner guiding channel (612) are communicated to form the second discharge channel (60).

5. The vertical mill according to claim 4, characterized in that: The inner separator (61) and the outer separator (62) are both provided with a first key groove (63), the driving shaft (3) is provided with a second key groove (33) corresponding to the first key groove (63), the first key groove (63) and the second key groove (33) can be inserted with a key pin (64) to limit the rotation of the inner separator (61) and the outer separator (62) relative to the driving shaft (3).

6. The vertical mill of claim 4, wherein: The inner guiding channel (612) is provided with a first through hole (613), and the driving shaft (3) is provided with a second through hole (34), the first through hole (613) and the second through hole (34) are used for communicating the second discharge channel (60) and the third discharge channel (30).

7. The vertical mill of claim 4, wherein: The separator assembly (6) further comprises an upper fixed plate (65) and a lower fixed plate (66), the lower fixed plate (66) is connected with the driving shaft (3), the outer separator (62) is provided with a plurality of outer separators (62) which are stacked on the lower fixed plate (66), the upper fixed plate (65) is connected to the uppermost outer separator (62), and the upper fixed plate (65) is used for pressing the plurality of outer separators (62) on the driving shaft (3).

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