A vertical grinding mill

Abstract

The present invention relates to the technical field of grinding mills, and provides a vertical grinding mill, including a machine body, a grinding disc assembly, a grinding roller assembly and a pretreatment assembly. The machine body is provided with a window for the grinding roller assembly to extend into. The grinding roller assembly includes a swing arm assembly, a grinding roller body and a sealing frame. The sealing frame is fixed on the swing arm assembly. The grinding roller body passes through the sealing frame and is rotated on the swing arm assembly through a rotating shaft. The pretreatment assembly includes a shaking assembly and a horizontal assembly. The horizontal assembly is arranged above the grinding disc assembly in front of the grinding roller body, and the shaking assembly and the grinding disc assembly vibrate in coordination. The addition of the pretreatment assembly can ensure the consistency of the material thickness through the horizontal assembly, so that the grinding force of the grinding roller on the grinding disc is consistent, and the fineness of the ground material is consistent. At the same time, the shaking assembly can ensure that the material is evenly distributed on the grinding disc, and ensure that the grinding roller crushes the material more evenly, thereby improving the pretreatment quality of the material and creating better conditions for the subsequent grinding process.

Description

Technical Field

[0001] The invention relates to the technical field of grinding mills and provides a vertical grinding mill. Background Art

[0002] Vertical grinding mill is a kind of equipment widely used in cement, electric power, metallurgy, chemical industry, non-metallic minerals and other industries.

[0003] Although there are many types of vertical grinding mills, there are still some problems in actual use. After the material enters the grinding disc from the feed channel, the material has different thicknesses on the grinding disc. When the material is rolled by the grinding roller, it is subjected to different forces, resulting in different rolling quality. However, the diameters of the unground material and the ground material are different, and the centrifugal forces they are subjected to are different, which leads to uneven material distribution and reduces the grinding efficiency of the grinding roller. The thickness of the material layer between the grinding roller and the grinding disc is difficult to control. If it is too thick, the grinding efficiency will be reduced, and if it is too thin, the driving force of the mill will be increased, which will damage the grinding roller, grinding disc and hydraulic system. Summary of the invention

[0004] In order to overcome the deficiencies of the prior art, one of the objectives of the present invention is to provide a vertical grinding mill to solve the above-mentioned problems in the prior art.

[0005] One of the purposes of the present invention is achieved by adopting the following technical scheme: a vertical grinding mill, comprising a machine body, a grinding disc assembly, a grinding roller assembly and a pretreatment assembly, the machine body is provided with a window for the grinding roller assembly to extend into, the grinding roller assembly comprises a swing arm assembly, a grinding roller body and a sealing frame that cooperates with the window seal, the sealing frame is fixed on the movable arm assembly, the grinding roller body passes through the sealing frame and is rotatably arranged on the swing arm assembly through a rotating shaft, the pretreatment assembly is fixed on the sealing frame, the pretreatment assembly comprises a shaking assembly and a horizontal assembly, the horizontal assembly is arranged above the grinding disc assembly in front of the grinding roller body, and the shaking assembly vibrates in coordination with the grinding disc assembly.

[0006] Furthermore, the horizontal component includes a supporting channel, a movable arm, a blocking rod and a movable drive. The supporting channel is laterally arranged on the sealing frame, a movable shaft is provided at the front end of the supporting channel, the middle part of the movable arm is rotatably connected to the movable shaft, a horizontally arranged blocking rod is provided at the front end of the movable arm, the rear end of the movable arm extends into the sealing frame and is rotatably connected to the movable drive, and the movable drive is arranged on the sealing frame.

[0007] Furthermore, the movable arm comprises a vertical arm and a transverse arm, the vertical arm is connected to the transverse arm in an L shape, and the supporting channel is arranged above the rotating shaft of the grinding roller body.

[0008] Furthermore, the blocking rod includes a vertical net, and the lower end of the vertical arm is fixedly connected to the vertical net.

[0009] Furthermore, a connecting mechanism is provided at the lower end of the vertical arm, and the connecting mechanism includes two connecting rods, the upper ends of the connecting rods are matched with the lower end of the vertical arm, and the lower ends of the two connecting rods are rotatably connected and matched with the two ends of the vertical net.

[0010] Furthermore, the rocking assembly includes a rocking support channel, a rocking arm and a rocking drive. The rocking support channel is arranged on the lower inner side of the sealing frame and extends to the grinding disc assembly. The end of the rocking support channel is provided with a rocking shaft for the rocking arm to swing and rotate. One end of the rocking arm extends toward the sealing frame and extends into the sealing frame and is rotatably connected with the rocking drive. The other end of the rocking arm extends out of the rocking support channel and extends to one side of the grinding disc assembly. A pressing part is provided at the end of the rocking arm close to the grinding disc assembly, and the pressing part is pressed and matched with the grinding disc assembly. The grinding disc assembly includes a vertical reducer, a grinding disc connecting seat, a grinding disc main body, a grinding disc part and a movable part. The grinding disc main body is arranged on the grinding disc connecting seat through the grinding disc connecting seat. Above the vertical reducer, a groove for placing the grinding disc member is provided above the grinding disc main body, and a horizontally arranged guide groove extending to the outside of the grinding disc main body is provided in the groove, the inner end of the movable member is elastically arranged in the guide groove by a spring, and the outer end of the movable member extends out of the guide groove and is pressed and matched with the pressing part, and an arc-shaped groove extending in the up and down directions is provided on the movable member, and an arc-shaped protrusion matching the arc-shaped groove is provided on the grinding disc member. When the movable member is pressed by the pressing part, the movable member will move toward the inside of the guide groove, and as the arc-shaped groove moves inward, the movable member will push the arc-shaped protrusion upward, that is, the grinding disc member will be pushed up, and every time the grinding disc main body rotates one circle, the shaking assembly will push up the grinding disc member once, thereby achieving vibration.

[0011] Furthermore, the machine body further comprises a feed channel, and a feed inlet of the feed channel is arranged in front of the blocking rod.

[0012] Furthermore, the grinding disc body comprises an upper grinding disc and a lower grinding disc, the lower grinding disc is a cylindrical body, the upper end surface of the lower grinding disc is provided with the guide groove, and the upper grinding disc is annular and fixed above the lower grinding disc by bolts.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. The present invention effectively pre-treats the material by adding a pre-treatment component, including a shaking component and a horizontal component, so that the material can be more evenly distributed and have a suitable thickness before entering the grinding roller, thereby improving the grinding efficiency.

[0015] 2. The design of the horizontal component can limit the height of the material on the grinding disc. By effectively controlling the thickness of the material layer, the consistency of the material thickness is ensured, avoiding the problem of the material being too thick or too thin, and reducing the damage to the grinding roller, grinding disc and hydraulic system. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the present invention;

[0017] Figure 2 A schematic diagram of the structure of the machine body of the present invention;

[0018] Figure 3 It is a schematic diagram of the cooperation between the grinding roller assembly and the grinding disc assembly of the present invention;

[0019] Figure 4 This is a schematic diagram of the sealing frame structure of the present invention;

[0020] Figure 5 This is a schematic diagram of the main structure of the grinding disc of the present invention;

[0021] Figure 6 This is a schematic diagram of the structure of the upper grinding disc of the present invention;

[0022] Figure 7 It is a schematic diagram of the internal structure of the grinding disc main body of the present invention.

[0023] In the figure:

[0024] Machine body, 11-window, 12-feeding channel,

[0025] 2- grinding disc assembly, 21- grinding disc connecting seat, 22- grinding disc body, 23- grinding disc part, 24- movable part,

[0026] 221-guide groove, 231-arc-shaped protrusion, 241-arc-shaped groove,

[0027] 3-grinding roller assembly, 31-swing arm assembly, 311-swing arm, 312-swing support frame, 3121-swing rotating bearing frame, 313-swing drive,

[0028] 32-grinding roller body, 33-sealing frame, 331-driving groove, 332-perforation, 333-sealing channel,

[0029] 4-pretreatment component, 41-shaking component, 411-shaking arm, 4111-pressing part, 412-shaking drive, 42-horizontal component, 421-support channel, 422-movable arm, 4221-vertical arm, 423-blocking rod, 424-movable drive. DETAILED DESCRIPTION

[0030] Below, combined with the attached Figure 1 To Attachment Figure 7As well as specific implementation methods, the present invention is further described. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0031] like Figures 1 to 5 As shown, a vertical grinding mill comprises a machine body 1, a grinding disc assembly 2, a grinding roller assembly 3 and a pre-treatment assembly 4;

[0032] Specifically, Figure 1 , Figure 2 As shown, the machine body 1 is a cylindrical body with a cavity, a vertical reducer is provided at the bottom of the machine body 1, the vertical reducer is driven by a motor to rotate, a grinding disc assembly 2 is provided on the vertical reducer and is driven by the vertical reducer to rotate, a grinding roller assembly 3 is provided above the grinding disc assembly 2, a window 11 is provided on the machine body 1 for the grinding roller assembly 3 and the pretreatment assembly 4 to extend into, and the grinding roller assembly 3 is extruded and matched with the grinding disc assembly 2 to grind the material;

[0033] like Figure 2 , Figure 3 As shown, the grinding roller assembly 3 in this embodiment is set as two groups, which are symmetrically arranged on both sides of the machine body 1. The grinding roller assembly 3 includes a swing arm assembly 31, a grinding roller body 32 and a sealing frame 33 that seals and blocks the window 11. The window 11 on the machine body 1 is different from the window 11 in the existing mill. The size of the window 11 in this embodiment should be larger than the window 11 in the existing mill, and at least the height should allow the grinding roller body 32 and the pretreatment assembly 4 to pass through. The window 11 is generally a rectangular opening, such as Figure 4 As shown, the sealing frame 33 is a rectangular shell, and the side wall of the sealing frame 33 can adopt an arc-shaped edge. The closer to the inside of the body 1, the narrower the side wall of the sealing frame 33 is. The side wall of the sealing frame 33 can adapt to the side wall of the window 11 to achieve sealing. The sealing frame 33 is fixed on the swing arm assembly 31. The swing arm assembly 31 has the same structure as the swing arm 311 of the existing vertical mill, as shown in FIG. Figure 2As shown, the swing arm assembly 31 includes a swing arm 311, a swing support frame 312 and a swing drive 313. The swing support frame 312 is arranged on one side of the lower end of the machine body 1 and is generally fixed directly on the ground. The upper end of the swing support frame 312 is provided with a swing rotating bearing frame 3121 that rotates with the middle part of the swing arm 311. The swing arm 311 is L-shaped, and the lower end of the swing arm 311 is rotatably connected to the swing drive 313. The swing drive 313 generally adopts a hydraulic pump to drive the lower end of the swing arm 311 to move, so that the upper end of the swing arm 311 rotates around the swing rotating bearing frame 3121 as the center. The grinding roller body 32 passes through the sealing frame 33 and is rotatably arranged on the swing arm assembly 31 through a rotating shaft. It is generally rotatably arranged on the upper end of the swing arm 311, and a corresponding rotating bearing is provided at the upper end of the swing arm 311. A through hole 332 for the rotating shaft of the grinding roller body 32 to pass through is provided at the lower middle part of the sealing frame 33. In order to strengthen the sealing between the rotating shaft of the grinding roller body 32 and the sealing frame 33 and prevent the material from entering the gap and affecting the rotation of the grinding roller body 32, a sealing channel 333 for the rotating shaft of the grinding roller body 32 to pass through can be extended from the through hole 332 of the sealing frame 33. Since the height of the sealing frame 33 in this embodiment is higher than that of the existing equipment, a large space is left on the upper part of the sealing frame 33. A pretreatment component 4 is provided on the upper side of the through hole 332 of the sealing frame 33. The pretreatment component 4 includes a horizontal component 42 for blocking the material above the grinding roller body 32 and a shaking component 41 for actively shaking the grinding disc body 22. The horizontal component 42 is arranged above the grinding disc component 2 in front of the grinding roller body 32, and the shaking component 41 is vibrated in coordination with the grinding disc component 2. The device is provided with a horizontal component 42 and a shaking component 41 on the basis of the existing vertical grinding mill. The horizontal component 42 can limit the height of the material on the grinding disc component 2. When the grinding disc body 22 rotates, the material above the specified height will be blocked by the horizontal component 42, so that the material entering under the grinding roller body 32 is always below a certain height. In this way, the mutual force between the grinding disc body 22 and the grinding roller body 32 is basically unchanged. By controlling the thickness of the material layer, the grinding effect can be guaranteed.

[0034] At the same time, the thickness of the material is also affected by the distribution of the material. The present invention further adds a shaking component 41, which produces a shaking effect on the grinding disc body 22, so that the material is evenly distributed, so that the thickness of the material after grinding can be more effectively controlled to avoid the material being too thin or too thick.

[0035] As a specific description of the horizontal component 42, Figure 2 and Figure 3As shown, the horizontal component 42 includes a support channel 421, a movable arm 422, a blocking rod 423 and a movable drive 424. The support channel 421 is a long strip-shaped channel extending from the upper part of the sealing frame 33 to the center of the machine body 1. The front end of the support channel 421 extends all the way to the grinding roller body 32. The front end of the support channel 421 is provided with a movable shaft for the movable arm 422 to rotate. The middle part of the movable arm 422 is rotatably connected to the movable shaft. The movable arm 422 includes a vertical arm 4221 and a horizontal arm. The vertical arm 4221 is connected to the horizontal arm in an L shape. The horizontal arm extends from the outside of the sealing frame 33 to the position of the movable shaft. The vertical arm 4221 extends downward from the movable shaft, and its lower end extends all the way to the top of the grinding disc body 22. The rear end of the horizontal arm is connected to the movable drive 424. The movable drive 424 generally adopts a smaller hydraulic pump. The movable drive 424 can be fixed on the sealing frame 33, generally fixed vertically on one side of the perforation 332, and the movable end of the movable drive 424 is rotatably connected to the rear end of the transverse arm. The support channel 421 leaves space for the transverse arm to swing up and down, and the front end of the support channel 421 is provided with a movable groove for the vertical arm 4221 to swing. The lengths of the transverse arm and the vertical arm 4221 are fixed. The movable drive 424 is connected to the controller of the vertical mill, and the controller of the vertical mill itself can control the height of the grinding roller assembly 3, and can also calculate the height between the blocking rod 423 and the grinding disc body 22 when the extension distance of the movable drive 424 is how much through a preset calculation method.

[0036] Specifically, the front end of the movable arm 422 is provided with a horizontally arranged blocking rod 423. The blocking rod 423 can be a straight rod, and the distance between the bottom of the straight rod and the upper end of the grinding disc body 22 is the thickness of the material layer. Some materials with larger particles will be blocked by the blocking rod 423 and thrown out of the grinding disc body 22 under the control of centrifugal force. If the weight of the material is too large to be blown up and falls on the lower end of the body 1, a recovery box can be set below the body 1 to recover the material with too large particles, and put it into the grinding disc body 22 again through the feeding channel 12 after being crushed and made smaller. In this embodiment, a vertical net is used, and the lower end of the vertical arm 4221 is fixedly connected to the vertical net. The mesh blocking rod 423 allows more space to pass than the straight rod style blocking rod 423, and some very small particles will pass through the mesh to avoid too many large particles, which are stuck under the blocking rod 423 and cause small particles to be unable to pass. And the number of particles passing through the mesh will not be too much, so it will not affect the thickness of the material layer.

[0037] As a further optimization, the blocking rod 423 is fixedly connected to the movable arm 422. When the movable arm 422 rotates, the blocking rod 423 cannot be kept horizontal. Therefore, a connecting mechanism is provided at the lower end of the vertical arm 4221. The connecting mechanism includes two connecting rods, the upper ends of which are matched with the lower ends of the vertical arm 4221, and the lower ends of the two connecting rods are respectively connected and matched with the two ends of the vertical net for rotation. When the vertical rod has a certain inclination due to rotation, the gravity of the vertical net itself will cause the connecting rod to rotate, so that the two ends of the vertical net are always in a horizontal state.

[0038] As a further description of the shaking component, such as Figure 4 and Figure 7 As shown, the shaking assembly includes a shaking support channel, a shaking arm 411 and a shaking drive 412. The shaking support channel is arranged on the lower inner side of the sealing frame 33 and extends to the grinding disc assembly 2. A shaking shaft for the shaking arm 411 to swing and rotate is provided at the end of the shaking support channel. The shaking arm 411 is similar in shape to the movable arm 422 and is in a smaller L-shape. One end of the shaking arm 411 extends toward the sealing frame 33 along the shaking shaft and extends out of the sealing frame 33 to be rotationally connected with the shaking drive 412. The shaking drive 412 generally adopts a hydraulic pump. The other end of the shaking arm 411 extends out of the shaking support channel from the shaking shaft and extends to one side of the grinding disc assembly 2. A pressing portion 4111 is provided at the end of the shaking arm 411 close to the grinding disc assembly 2, and the pressing portion 4111 is pressed and matched with the grinding disc assembly 2. In this embodiment, the grinding disc assembly 2 includes a vertical reducer, a grinding disc connection seat 21, a grinding disc body 22, a grinding disc member 23 and a movable member 24, wherein the grinding disc body 22 is arranged above the vertical reducer through the grinding disc connection seat 21. The grinding disc body 22 is cylindrical, and a groove for placing the grinding disc member 23 is arranged above the grinding disc body 22. The grinding disc member 23 is a flat circular disc, and the edge of the grinding disc member 23 is provided with an inclined upward flange. A horizontally arranged guide groove 221 extending to the outside of the grinding disc body 22 is arranged in the groove. The inner end of the movable member 24 is elastically arranged in the guide groove 221 by a spring, and the outer end of the movable member 24 extends out of the guide groove 221 and is pressed and matched with the pressing portion 4111. The movable member 24 is provided with an arc-shaped groove 241 extending in the up-down direction, and the grinding disc member 23 is provided with an arc-shaped protrusion 231 matching the arc-shaped groove 241. When the movable member 24 is pressed by the pressing portion 4111, the movable member 24 will move toward the inside of the guide groove 221. As the arc-shaped groove 241 moves inward, the movable member 24 will push up the arc-shaped protrusion 231, that is, the grinding disc member 23 will be pushed up. A buffer spring is provided between the grinding disc member 23 and the upper arm of the arc-shaped groove. Every time the grinding disc body 22 rotates one circle, the shaking assembly will push up the grinding disc member 23 once, thereby achieving vibration.

[0039] As an optimization, Figure 2As shown, the machine body 1 also includes a feed channel 12, and the feed port of the feed channel 12 is arranged in front of the blocking rod 423. This ensures that the material will first pass through the blocking rod 423 when entering the bottom of the grinding roller body 32, thereby ensuring the thickness consistency of the material layer.

[0040] like Figure 5 , Figure 6 The grinding disc body 22 includes an upper grinding disc and a lower grinding disc. The lower grinding disc is a cylindrical body. The upper end surface of the lower grinding disc is provided with the guide groove 221. The upper grinding disc is annular and fixed above the lower grinding disc by bolts.

[0041] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A vertical grinding mill, characterized in that: It comprises a machine body, a grinding disc assembly, a grinding roller assembly and a pre-treatment assembly, wherein the machine body is provided with a window for the grinding roller assembly to extend into, the grinding roller assembly comprises a swing arm assembly, a grinding roller body and a sealing frame cooperating with the window seal plug, the sealing frame is fixed on the swing arm assembly, the grinding roller body passes through the sealing frame and is rotatably arranged on the swing arm assembly through a rotating shaft, the pre-treatment assembly is fixed on the sealing frame, the pre-treatment assembly comprises a shaking assembly and a horizontal assembly, the horizontal assembly is arranged above the grinding disc assembly in front of the grinding roller body, and the shaking assembly vibrates in cooperation with the grinding disc assembly; The horizontal component includes a support channel, a movable arm, a blocking rod and a movable drive, wherein the support channel is transversely arranged on the sealing frame, a movable shaft is arranged at the front end of the support channel, the middle part of the movable arm is rotatably connected to the movable shaft, a horizontally arranged blocking rod is arranged at the front end of the movable arm, the rear end of the movable arm extends into the sealing frame and is rotatably connected to the movable drive, and the movable drive is arranged on the sealing frame; The movable arm comprises a vertical arm and a horizontal arm, the vertical arm and the horizontal arm are connected in an L shape, and the supporting channel is arranged above the rotating shaft of the grinding roller body; The blocking rod comprises a vertical net, and the lower end of the vertical arm is fixedly connected to the vertical net.

2. A vertical grinding mill according to claim 1, characterized in that: A connecting mechanism is provided at the lower end of the vertical arm, and the connecting mechanism includes two connecting rods, the upper ends of the connecting rods are matched with the lower ends of the vertical arms, and the lower ends of the two connecting rods are respectively rotatably connected and matched with the two ends of the vertical net.

3. A vertical grinding mill according to claim 1, characterized in that: The rocking assembly includes a rocking support channel, a rocking arm and a rocking drive. The rocking support channel is arranged on the lower inner side of the sealing frame and extends to the grinding disc assembly. The end of the rocking support channel is provided with a rocking shaft for the rocking arm to swing and rotate. One end of the rocking arm extends toward the sealing frame and extends into the sealing frame to be connected with the rocking drive for rotation. The other end of the rocking arm extends out of the rocking support channel and extends to one side of the grinding disc assembly. A pressing part is provided at the end of the rocking arm close to the grinding disc assembly, and the pressing part is pressed and matched with the grinding disc assembly. The grinding disc assembly includes a vertical reducer, a grinding disc connecting seat, a grinding disc main body, a grinding disc part and a movable part. The grinding disc main body is arranged on the vertical The upper part of the grinding disc body is provided with a groove for placing the grinding disc part, and the groove is provided with a horizontally arranged guide groove extending to the outside of the grinding disc body. The inner end of the movable part is elastically arranged in the guide groove by a spring, and the outer end of the movable part extends out of the guide groove and is pressed and matched with the pressing part. The movable part is provided with an arc-shaped groove extending in the up and down directions, and the grinding disc part is provided with an arc-shaped protrusion matching the arc-shaped groove. When the movable part is pressed by the pressing part, the movable part will move toward the inside of the guide groove, and as the arc-shaped groove moves inward, the movable part will push the arc-shaped protrusion upward, that is, the grinding disc part will be pushed up, and every time the grinding disc body rotates one circle, the shaking assembly will push up the grinding disc part once, so as to achieve vibration.

4. A vertical grinding mill according to claim 1, characterized in that: The machine body further comprises a feeding channel, and a feeding port of the feeding channel is arranged in front of the blocking rod.

5. A vertical grinding mill according to claim 3, characterized in that: The grinding disc body comprises an upper grinding disc and a lower grinding disc. The lower grinding disc is a cylindrical body. The upper end surface of the lower grinding disc is provided with the guide groove. The upper grinding disc is annular and fixed above the lower grinding disc by bolts.

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