Roller type grinding equipment

Abstract

The invention relates to the technical field of grinding equipment, and particularly discloses roller type grinding equipment which comprises a machine body, a feeding mechanism, a grinding mechanism, a separating mechanism and a collecting mechanism, the grinding mechanism comprises a grinding disc and a grinding roller rolling along the surface of the grinding disc, a material blocking ring is arranged on the edge of the grinding disc, and the collecting mechanism comprises a guiding part, a collecting part, a first conveying part and a second conveying part. The collecting part is arranged on the inner side of the material blocking ring and matched with the radian of the material blocking ring, the collecting part is located between the two grinding rollers, the first conveying part circularly rotates on the inner side of the collecting part, the second conveying part circularly rotates on the inner side of the first conveying part, and the first conveying part and the second conveying part convey and screen materials with different granularities. And the discharging directions of the first conveying part and the second conveying part face different areas of the grinding roller, a guide plate is arranged on the inner side of the second conveying part, the tail end of the guide plate extends to the outer side of the material blocking ring, the guide part is arranged at the feeding end of the collecting part and attached to the grinding roller, and the grinding efficiency of materials is improved through the grinding equipment.

Description

Technical Field

[0001] The invention relates to the technical field of grinding equipment, in particular to a roller type grinding equipment. Background Art

[0002] Roller mill is a kind of crushing and grinding device, which is mainly used to further refine block, granular or powder materials. The mill is suitable for many industries, such as building materials, mining, chemical industry, etc. When the roller mill in the related technology is working, the material is added into the equipment through the feed port and falls into the grinding disc. When the grinding roller rotates relative to the grinding disc, the material on the grinding disc is squeezed and ground. During the continuous rotation of the grinding disc, the ground material gradually moves to the edge of the grinding disc under the action of centrifugal force, and passes through the retaining ring at the edge of the grinding disc to leave the grinding disc and is carried upward by the high-speed airflow into the upper powder selector of the equipment. Qualified finished products are selected by the powder selector, and unqualified large particles are mixed with the newly added materials and re-ground until the materials are ground into finished products with qualified particle size requirements. Because the retaining ring at the edge of the grinding disc has a certain height, when the ground material moves to the edge of the grinding disc, part of the powder will accumulate on the inside of the retaining ring and cannot be brought into the powder selector by the airflow. The accumulation and residue of powder on the inside of the retaining ring will affect the stability and grinding efficiency of the mill.

[0003] The patent document with authorization announcement number CN114643103B discloses a vertical roller mill retaining ring adjustment device, which has a built-in adjustment mechanism installed in the mill shell, and includes a retaining ring, a retaining ring support welded to the outer wall of the retaining ring in the radial direction, and a plurality of height adjustment pads are provided above the retaining ring support. The height adjustment pads and the retaining ring support are fixedly mounted on a radial bracket by fasteners, and the outer end of the radial bracket is welded to the inner wall of the mill shell. The retaining ring adjustment device of the patent document can realize the spatial separation operation of the retaining ring and the grinding disc. The retaining ring, which originally rotates with the grinding disc, is suspended above the grinding disc and is statically supported by a bracket welded to the mill shell, and a fine powder discharge gap is formed between the retaining ring and the grinding disc, thereby realizing the discharge of fine powder.

[0004] The retaining ring adjustment device of the above-mentioned patent document movably sets the retaining ring and the grinding disc so that the powder is discharged from the gap between the retaining ring and the grinding disc when the retaining ring is moved upward. In the actual working process of the grinding equipment, there are certain differences in the particle size of the powder accumulated on the retaining ring, that is, there are qualified fine powders and granular materials with unqualified particle sizes. When the retaining ring is separated from the grinding disc, the accumulated materials will be completely discharged. When the discharged materials are mixed with the unqualified parts and newly added materials and ground again, the newly added materials with larger particle sizes will be ground first. There will be a part of materials with relatively small particle sizes but not meeting the qualified requirements, which are always difficult to be fully ground and crushed, resulting in an increase in the material grinding time, thereby affecting the material grinding efficiency. Summary of the invention

[0005] The present invention provides a stick-type grinding equipment, aiming to solve the problem that when a roller-type grinding equipment in the related art grinds materials, some materials accumulated on the inner side of a material retaining ring are difficult to be fully and effectively ground after being discharged and sorted and re-entering a grinding center, resulting in increased material grinding time and affected material grinding efficiency.

[0006] The roller milling equipment of the present invention comprises a machine body and a feeding mechanism, a grinding mechanism and a separating mechanism arranged on the machine body, wherein the grinding mechanism comprises a grinding disc and a rolling roller rolling along the surface of the grinding disc, the edge of the grinding disc is provided with a material retaining ring, the feeding mechanism feeds the material into the grinding disc, the separating mechanism is used to separate the qualified materials after grinding, the machine body is also provided with a plurality of groups of collecting mechanisms corresponding to each of the rolling rollers, the machine body is also provided with a plurality of groups of collecting mechanisms corresponding to each of the rolling rollers; the collecting mechanism is fixed relative to the machine body, and the collecting mechanism comprises a guide member, a collecting member, a conveying member and a conveying member. Component 2, the collecting component is adapted to the curvature of the material-blocking ring and is arranged on the inner side of the material-blocking ring, the collecting component is located between the two rolling rollers, the conveying component 1 circulates inside the collecting component, the conveying component 2 circulates inside the conveying component 1, the conveying component 1 and the conveying component 2 convey and screen materials of different particle sizes, the conveying component 1 and the conveying component 2 face different areas of the rolling roller in the unloading direction of the unloading end, a guide plate is provided on the inner side of the conveying component 2, the end of the guide plate extends to the outer side of the material-blocking ring, and the guide member is arranged in contact with the rolling roller at the feeding end of the collecting component.

[0007] The invention solves the problem of powder accumulation on the inner side of the material retaining ring and improves the grinding efficiency of the material. Each group of collecting mechanisms is respectively arranged between two adjacent rolling rollers. When the rolling roller rolls relative to the surface of the grinding disc, the material is crushed and crushed. The crushed material moves to the feeding end of the collecting member under the conveying action of the spiral blades. The conveying members 1 and 2 convey the crushed material and screen the material according to the particle size range at the same time. The qualified material is discharged and collected from the guide plate inside the conveying member 2. The material with smaller particle size is conveyed by the conveying member 2, and the material with relatively larger particle size is conveyed by the conveying member 1. The conveying member 1 and the conveying member 2 convey the materials of different particle size ranges to different rolling areas of the rolling roller, so that the materials of different particle sizes can be fully and effectively ground and crushed, thereby improving the grinding effect and grinding efficiency of the materials.

[0008] Preferably, the guide member includes a guide portion and a spiral blade, the guide portion is L-shaped, the guide portion is fixed relative to the collecting member, the spiral blade is located between the guide portion and the rolling roller, the spiral blade is connected to a motor, and the conveying end of the spiral blade is opposite to the feeding end of the collecting member.

[0009] It is convenient to smoothly transport the material crushed by the rolling roller to the collecting piece. The guide part limits the ground material, and the guide part continuously transports the ground material to the feeding end of the collecting piece when it rotates.

[0010] Preferably, the unloading end of the collecting member is provided with unloading port 1 and unloading port 2, the unloading port 1 is opposite to the conveying end of the conveying member 1, the unloading port 2 is opposite to the conveying end of the conveying member 2, and the unloading port 1 and the unloading port 2 are facing different areas of the rolling roller.

[0011] It is convenient to introduce materials of different particle size ranges into different crushing areas of the rolling roller. The first discharge port is opposite to the discharge end of the conveying member 1, and is used to discharge materials with relatively large particle sizes. The second discharge port is opposite to the discharge end of the conveying member 2, and is used to discharge materials with relatively small particle sizes. The first discharge port and the second discharge port are arranged in different directions, which is convenient for introducing materials into different areas of the rolling roller for secondary crushing, avoiding the problem that small-particle materials and large-particle materials cannot be fully crushed and crushed after mixing, improving the crushing effect of materials of different particle sizes, facilitating the rapid crushing of materials to the qualified range, and improving the crushing efficiency of materials.

[0012] Preferably, a push block is slidably provided on the collecting member, and the push block slides in contact with the discharge port and pushes the material to be discharged from the discharge port.

[0013] Preferably, with the side facing the axis of the grinding disc as the inner side, the feeding direction of the first feeding port is toward the front side of the rolling roller, and the feeding direction of the second feeding port is toward the rear side of the rolling roller.

[0014] To further improve the crushing efficiency of the material, the material gradually moves from the inside to the outside of the grinding disc during the grinding process. The discharge port guides the large particles of material to the inside of the rolling roller, so that the large particles of material gradually move from the inside to the outside during grinding, increasing the grinding time of the large particles of material, so that the large particles of material can be fully and effectively ground.

[0015] Preferably, the height of the guide plate decreases in a direction away from the axis of the grinding disc, and the lower end of the guide plate is in contact with and flush with the upper end of the retaining ring.

[0016] Preferably, the high end of the guide plate abuts against the upper end surface of the conveying member 2 inside the conveying member 2.

[0017] The setting of the guide plate facilitates the smooth discharge of qualified materials. The conveying member one screens the materials while conveying the crushed materials. Materials with larger particle sizes remain on the upper surface of the conveying member one, and materials with smaller particle sizes fall onto the conveying member two inside the conveying member one. The conveying member two further screens the materials while conveying the materials. The qualified ground materials pass through the sieve holes on the conveying member two and fall onto the guide plate, slide along the guide plate to the outside of the material retaining ring, and enter the separation mechanism for separation and collection under the action of high-speed airflow.

[0018] Preferably, the height of the conveying member 1 at the feeding end of the collecting member increases along the conveying direction.

[0019] Preferably, a bracket is fixed on the body, and each of the collecting components is fixed relative to the bracket.

[0020] Preferably, there are three rolling rollers, and the rolling rollers are evenly spaced along the circumference of the grinding disc.

[0021] The beneficial effects of the present invention are: (1) The problem of powder accumulation on the inner side of the retaining ring is solved, and the grinding efficiency of the material is improved. Each group of collecting mechanisms is arranged between two adjacent rolling rollers. When the rolling roller rolls relative to the surface of the grinding disc, the material is crushed and crushed. The crushed material moves to the feeding end of the collecting member under the conveying action of the spiral blade. The conveying member 1 and the conveying member 2 convey the crushed material and screen the material according to the particle size range. The qualified material is discharged and collected from the guide plate inside the conveying member 2. The material with smaller particle size is conveyed by the conveying member 2, and the material with relatively larger particle size is conveyed by the conveying member 1. The conveying member 1 and the conveying member 2 convey the materials of different particle size ranges to different rolling areas of the rolling roller, so that the materials of different particle sizes can be fully and effectively ground and crushed, thereby improving the grinding effect and grinding efficiency of the materials.

[0022] (2) Conveying member 1 and conveying member 2 guide materials of different particle size ranges into different crushing areas of the rolling roller. Discharge port 1 is opposite to the discharge end of conveying member 1 and is used to discharge materials with relatively large particle sizes. Discharge port 2 is opposite to the discharge end of conveying member 2 and is used to discharge materials with relatively small particle sizes. Discharge port 1 and discharge port 2 are arranged in different directions to facilitate the introduction of materials into different areas of the rolling roller for secondary crushing, thereby promoting the small particle materials to be fully crushed. Discharge port 1 guides the large particle materials to the inner side of the rolling roller, so that the large particle materials gradually move from the inside to the outside during grinding, thereby increasing the grinding time of the large particle materials and enabling the large particle materials to be fully and effectively ground and crushed. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0024] Figure 2It is a schematic diagram of the structure of the grinding mechanism and the collecting mechanism in the present invention.

[0025] Figure 3 It is a schematic diagram of the structure of the arrangement of each collecting mechanism relative to the grinding disc in the present invention.

[0026] Figure 4 It is a schematic diagram of the structure inside the collecting mechanism of the present invention.

[0027] Reference numerals: 1. Machine body; 11. Bracket; 2. Grinding disc; 21. Material retaining ring; 22. Rolling roller; 3. Collecting member; 31. Guide member; 311. Spiral blade; 312. Guide part; 32. Conveying member 1; 321. Discharging port 1; 33. Conveying member 2; 331. Discharging port 2; 34. Guide plate. DETAILED DESCRIPTION

[0028] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0029] like Figures 1 to 3 As shown, the roller mill device of the present invention comprises a body 1, on which a feeding mechanism, a grinding mechanism, a separation mechanism and a collection mechanism are provided. The feeding mechanism is used to transport the material to be ground to the grinding mechanism for grinding. The grinding mechanism crushes and grinds the material. The material after grinding by the grinding mechanism is brought into the separation mechanism at the upper part of the equipment by the high-speed airflow. The separation mechanism selects and collects the finished product with qualified particle size. The grinding mechanism comprises a grinding disc 2 and a plurality of rolling rollers 22. The edge of the grinding disc 2 is provided with a material retaining ring 21. Each rolling roller 22 is evenly spaced along the circumference of the grinding disc 2. The number of rolling rollers 22 is preferably three. In other embodiments, the rolling rollers 22 can also be two or four. The specific number can be set according to work requirements. The grinding disc 2 is connected to a transmission assembly, which drives the grinding disc 2 to rotate around its axis. The body 1 is also provided with a hydraulic system (not shown in the figure), which drives each rolling roller 22 to rotate along the surface of the grinding disc 2. It belongs to the prior art to drive the rolling roller 22 to rotate along the surface of the grinding disc 2 by the hydraulic system. The specific structure and working mode of the hydraulic system are not described here.

[0030] like Figures 2 to 4As shown, there are multiple groups of collecting mechanisms, and the number of collecting mechanisms is consistent with the rolling rollers 22. Each group of collecting mechanisms is respectively arranged between two adjacent rolling rollers 22. The collecting mechanism includes a guide member 31, a collecting member 3, a conveying member 1 32 and a conveying member 2 33. The collecting member 3 is adapted to the curvature of the retaining ring 21 and is arranged on the inner side of the retaining ring 21. A bracket 11 is fixed on the body 1, and each collecting member 3 is fixed to the bracket 11. The collecting member 3 is located between the two rolling rollers 22. The conveying member 1 32 circulates inside the collecting member 3 and is used to convey the material from one end of the collecting member 3 to the other end. The conveying member 2 33 is arranged on the inner side of the conveying member 1 32. The conveying member 1 32 and the conveying member 2 33 are both circulatory belt-shaped. The conveying member 1 32 and Both ends of the conveying member 33 are sleeved on the rotating rollers and driven to rotate by the motor. The conveying members 1 32 and 33 are both sieve-shaped, and the aperture of the conveying member 2 33 is smaller than the aperture of the conveying member 1 32. A guide plate 34 is provided on the inner side of the conveying member 2 33. The end of the guide plate 34 extends to the outer side of the retaining ring 21, with the side facing the axis of the grinding disc 2 as the inner side. The guide plate 34 is inclined downward from the inside to the outside. The guide plate 34 can also be provided with a structure with a decreasing thickness from the inside to the outside. The high end of the guide plate 34 abuts against the upper end surface of the conveying member 2 33 inside the conveying member 2 33, and the outer side surface of the collecting member 3 is provided with a notch opposite to the lower end of the guide plate 34. The lower end of the guide plate 34 is in contact with and flush with the upper end of the retaining ring 21.

[0031] The unloading end of the collecting piece 3 is provided with a unloading port 1 321 and a unloading port 2 331. The unloading port 1 321 is opposite to the conveying end of the conveying piece 1 32, and the unloading port 2 331 is opposite to the conveying end of the conveying piece 2 33. The unloading port 1 321 and the unloading port 2 331 face different areas of the rolling roller 22. The guide piece 31 is arranged at the loading end of the collecting piece 3 to fit the rolling roller 22. The guide piece 31 includes a guide portion 312 and a spiral blade 311. The guide portion 312 is L-shaped. The guide portion 312 is fixed relative to the collecting piece 3. The spiral blade 311 is located between the guide portion 312 and the rolling roller 22. The spiral blade 311 is connected to a motor. The conveying end of the spiral blade 311 is opposite to the loading end of the collecting piece 3.

[0032] The rolling roller 22 rolls relative to the surface of the grinding disc 2 to crush the material. The crushed material moves to the feeding end of the collecting member 3 under the conveying action of the spiral blade 311 and is conveyed by the conveying member 32. In order to facilitate the spiral blade 311 to smoothly convey the crushed material to the feeding end of the conveying member 32, the height of the conveying member 32 at the feeding end of the collecting member 3 increases along the conveying direction. The conveying member 32 screens the material while conveying the crushed material. The material with a larger particle size is retained on the upper surface of the conveying member 32 and is conveyed by the conveying member 32. At the unloading end of the collecting member 3, materials with smaller particle sizes fall onto the conveying member 2 33 inside the conveying member 1 32 and are conveyed by the conveying member 2 33. While conveying the materials, the conveying member 2 33 further screens the materials. The qualified ground materials pass through the sieve holes on the conveying member 2 33 and fall onto the guide plate 34, and slide along the guide plate 34 to the outside of the retaining ring 21, and enter the separation mechanism for separation and collection under the action of the high-speed airflow. The materials with unqualified particle sizes are retained on the conveying member 2 33 and are conveyed by the conveying member 2 33 to the unloading end of the collecting member 3.

[0033] The large particles of materials transported to the unloading end of the collecting member 3 by the conveying member 1 32 are discharged from the unloading port 1 321, and the materials with relatively small particle sizes transported to the unloading end of the collecting member 3 by the conveying member 2 33 are discharged from the unloading port 2 331. The materials discharged from the unloading port 1 321 and the unloading port 2 331 are further crushed and broken by the rolling roller 22 at the unloading end of the collecting member 3. Since the unloading port 1 321 and the unloading port 2 331 are oriented in different directions relative to the rolling roller 22, it is convenient to grind and crush materials of different particle sizes in different areas. Specifically, the unloading direction of the unloading port 1 321 is toward the front side of the rolling roller 22, and the unloading direction of the unloading port 2 331 is toward the rear side of the rolling roller 22. When materials of different particle sizes are mixed and crushed, the materials with larger particles will be crushed first. The materials are first crushed, resulting in that some materials with relatively small particle sizes cannot be fully squeezed. The conveying member 1 32 and the conveying member 2 33 cooperate to separate the materials in different particle size ranges, and guide the materials to different areas of the crushing roller 22 through the discharge port 1 321 and the discharge port 2 331, so that the materials in different particle size ranges can be fully ground, thereby improving the grinding effect of the materials. In the grinding process, the materials gradually move from the inner side of the grinding disc 2 to the outer side of the grinding disc 2, and the discharge port 1 321 guides the large particle materials to the inner side of the crushing roller 22, so that the large particle materials gradually move from the inside to the outside during grinding, thereby increasing the grinding time of the large particle materials, allowing the large particle materials to be fully ground, thereby improving the grinding effect of the large particle materials.

[0034] In order to facilitate the smooth entry of large-particle materials into the rolling area of ​​the rolling roller 22 from the discharge port 321, a push block is also slidably provided at the discharge end of the collecting piece 3, and the push block is connected to a cylinder. The cylinder works at intervals and pushes the push block to move. When the push block slides in line with the discharge port 321, it pushes the material to be discharged from the discharge port 321 to avoid accumulation of material at the conveying end of the conveying piece 32. Similarly, two push blocks can be set, and the other push block slides in line with the discharge port 2 331, and pushes the material to be discharged smoothly from the discharge port 2 331.

[0035] The roller grinding equipment of the present invention solves the problem of powder accumulation on the inner side of the retaining ring, and at the same time, the materials that do not reach the qualified particle size are screened according to the particle size range and sent to different grinding areas for grinding, so that the materials of different particle sizes can be fully ground, thereby improving the grinding efficiency and grinding effect of the materials.

[0036] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0037] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0038] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A roller mill, comprising a machine body (1) and a feeding mechanism, a grinding mechanism, and a separation mechanism arranged on the machine body (1), the grinding mechanism comprising a grinding disc (2) and a rolling roller (22) rolling along the surface of the grinding disc (2), the edge of the grinding disc (2) being provided with a retaining ring (21), characterized in that: The machine body (1) is also provided with a plurality of collection mechanisms corresponding to the respective rolling rollers (22). The collection mechanisms are fixed relative to the machine body (1). The collection mechanisms include a guide member (31), a collection member (3), a conveying member 1 (32) and a conveying member 2 (33). The collection member (3) is adapted to the curvature of the material retaining ring (21) and is arranged on the inner side of the material retaining ring (21). The collection member (3) is located between the two rolling rollers (22). The conveying member 1 (32) circulates inside the collection member (3). The conveying member 2 (33) is arranged on the inner side of the material retaining ring (21). The conveying member (33) circulates and rotates inside the conveying member (32), and the conveying member (32) and the conveying member (33) convey and screen materials of different particle sizes. The conveying member (32) and the conveying member (33) face different areas of the rolling roller (22) in the unloading direction at the unloading end. A guide plate (34) is provided on the inner side of the conveying member (33), and the end of the guide plate (34) extends to the outer side of the retaining ring (21). The guide member (31) is arranged at the loading end of the collecting member (3) to fit the rolling roller (22).

2. The roller grinding equipment according to claim 1, characterized in that: The guide member (31) comprises a guide portion (312) and a spiral blade (311); the guide portion (312) is L-shaped; the guide portion (312) is fixed relative to the collecting member (3); the spiral blade (311) is located between the guide portion (312) and the rolling roller (22); the spiral blade (311) is connected to a motor; and the conveying end of the spiral blade (311) is opposite to the feeding end of the collecting member (3).

3. The roller grinding equipment according to claim 1, characterized in that: The unloading end of the collecting member (3) is provided with unloading port 1 (321) and unloading port 2 (331), the unloading port 1 (321) is opposite to the conveying end of the conveying member 1 (32), the unloading port 2 (331) is opposite to the conveying end of the conveying member 2 (33), and the unloading port 1 (321) and the unloading port 2 (331) are oriented toward different areas of the rolling roller (22).

4. The roller grinding equipment according to claim 3, characterized in that: The collecting member (3) is also provided with a push block which is slidable, and the push block slides in contact with the first discharge port (321) and pushes the material to be discharged from the first discharge port (321).

5. The roller grinding equipment according to claim 3, characterized in that: With the side facing the axis of the grinding disc (2) as the inner side, the material discharge direction of the first material discharge port (321) is towards the front side of the rolling roller (22), and the material discharge direction of the second material discharge port (331) is towards the rear side of the rolling roller (22).

6. The roller mill according to claim 1, characterized in that: The height of the guide plate (34) decreases in a direction away from the axis of the grinding disc (2), and the lower end of the guide plate (34) is in contact with and flush with the upper end of the retaining ring (21).

7. The roller mill according to claim 6, characterized in that: The high end of the guide plate (34) abuts against the upper end surface of the second conveying member (33) inside the second conveying member (33).

8. The roller grinding equipment according to claim 1, characterized in that: The height of the conveying member 1 (32) at the loading end of the collecting member (3) increases along the conveying direction.

9. The roller mill according to claim 1, characterized in that: A bracket (11) is fixed on the machine body (1), and each of the collecting components (3) is fixed relative to the bracket (11).

10. The roller mill according to claim 1, characterized in that: There are three rolling rollers (22), and the rolling rollers (22) are evenly spaced along the circumference of the grinding disc (2).

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