Sand making grinding roller mechanism and Raymond mill

Abstract

The invention discloses a sand-making grinding roller mechanism and a Raymond mill. The sand-making grinding roller mechanism comprises a base, and a shell, a sand-making mechanism and a grinding ring matched with the sand-making mechanism are connected to the upper portion of the base; the sand making mechanism comprises a main shaft, a supporting frame and a grinding roller device, the supporting frame is connected with the main shaft, and the grinding roller device is rotatably connected with the supporting frame; the grinding ring is arranged on the outer side of the sand making mechanism and is fixedly connected with the base; wherein the grinding roller device comprises a grinding roller sleeve and a grinding roller, the grinding roller sleeve is hung on the supporting frame, the grinding roller is connected with the grinding roller sleeve, and the grinding roller is provided with a protruding part which enables a gap to be always formed between the grinding roller and the grinding ring. By means of the protruding parts, a gap can always exist between the grinding roller and the grinding ring, excessive attachment of the grinding roller and the grinding ring is avoided, the purpose of producing sand with the specified particle size is achieved, and the sand forming rate and the sand making stability can be effectively improved.

Description

Technical Field

[0001] The invention belongs to the technical field of ore processing, and in particular relates to a sand-making grinding roller mechanism and a Raymond mill. Background Art

[0002] Raymond mill usually refers to the grinding machine in the grinding equipment, also known as Raymond mill or Raymond mill. This equipment is usually used for fine powder processing in the fields of ore, building materials and chemical raw materials. It adopts a vertical structure and grinds the raw materials through a series of rollers to produce powder products of various particle sizes. The grinding roller and grinding ring of the existing Raymond mill are usually fitted, and the gap between them cannot be adjusted, so it is difficult to produce products of the same particle size. Therefore, there is an urgent need for a Raymond mill that can produce a specified particle size. Summary of the invention

[0003] In order to solve the above technical problems, the present invention provides a sand-making grinding roller mechanism and a Raymond mill. During the process of the grinding roller rotating around the grinding ring, a gap is always left between the grinding roller and the grinding ring, so that sand of specified particle size can be produced, thereby improving the sand formation rate and the stability of sand making.

[0004] Specifically, the present invention discloses a sand making roller mechanism, comprising:

[0005] A base, the upper part of which is connected with a shell, a sand making mechanism and a grinding ring matched with the sand making mechanism;

[0006] The sand making mechanism comprises a main shaft, a support frame and a grinding roller device, wherein the support frame is connected to the main shaft, and the grinding roller device is rotatably connected to the support frame;

[0007] The grinding ring is arranged on the outside of the sand making mechanism and is fixedly connected to the base; wherein,

[0008] The grinding roller device comprises a grinding roller sleeve and a grinding roller. The grinding roller sleeve is rotatably connected to the support frame, the grinding roller is connected to the grinding roller sleeve, and the grinding roller has a protrusion that always forms a gap between the grinding roller and the grinding ring.

[0009] Furthermore, the projection shape of the grinding roller is circular.

[0010] Furthermore, the protrusion is a spiral structure, and its projection shape is circular, and is arranged on the side wall of the grinding roller from top to bottom. The number of turns of the protrusion is between 1.015-1.05.

[0011] Furthermore, the protrusions are at least three mutually parallel and staggered rectangular structures, which are sequentially distributed on the side walls of the grinding roller, and the total length of the protrusions is 1.1-1.2 times the circumference of the grinding roller.

[0012] Furthermore, the projection shape of the grinding roller is a Lello triangle.

[0013] Furthermore, the protrusion is a spiral structure, and the projection shape is circular, and is arranged on the side wall of the grinding roller from top to bottom, and the number of turns of the protrusion is between 1.015-1.05.

[0014] Furthermore, a scraper mechanism is provided on the base, and the scraper mechanism includes a scraper frame and a scraper. The scraper frame is fixedly connected to the main shaft, and the scraper is installed above the scraper frame and is inclined with respect to the base.

[0015] Furthermore, the Raymond mill with a sand-making grinding roller mechanism also includes a blowing mechanism, which includes a fan and an annular air duct. The fan is connected to the annular air duct, and the annular air duct is arranged on the outside of the shell and is connected to the inside of the shell through an air inlet, and the horizontal height of the air inlet is lower than the horizontal height of the grinding ring.

[0016] Furthermore, the Raymond mill with the sand-making roller mechanism also includes a screening mechanism, which is arranged on the top of the shell to filter the material.

[0017] On the other hand, the present invention further discloses a Raymond mill, comprising any one of the above-mentioned sand making grinding roller mechanisms.

[0018] The beneficial effects of the present invention are:

[0019] By setting the protrusion, there is always a gap between the grinding roller and the grinding ring, which can produce sand of specified particle size and avoid excessive fit between the grinding roller and the grinding ring, so as to achieve the purpose of producing sand of specified particle size and effectively improve the sand formation rate and stability of sand making. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below.

[0021] Figure 1 It is a cross-sectional view of a Raymond mill having a sand-making roller mechanism;

[0022] Figure 2 is a schematic diagram of a grinding roller device;

[0023] Figure 3 This is the axial side view of the grinding roller and grinding ring;

[0024] Figure 4 This is an enlarged view of the cooperation between the protrusion and the grinding ring;

[0025] Figure 5 It is a schematic diagram of the motion trajectory of the protrusion on the grinding ring;

[0026] Figure 6 is an enlarged view of the cooperation between the protrusion and the grinding ring in another embodiment;

[0027] Figure 7 is a schematic diagram of another embodiment of the motion trajectory of the protrusion on the grinding ring;

[0028] Figure 8 It is a schematic diagram of the grinding roller being a Lello triangle;

[0029] Fig. 9 This is a top view of the grinding roller which is a Lello triangle.

[0030] The numbers involved in the drawings are as follows: base 1, shell 2, feed port 21, sand making mechanism 3, main shaft 31, support frame 32, grinding roller device 33, grinding roller sleeve 331, grinding roller 332, protrusion 333, protrusion motion trajectory 334, gap 335, grinding ring 4, grinding ring expansion surface 41, scraper mechanism 5, scraper frame 51, scraper 52, blowing mechanism 6, annular air duct 61, air inlet 62. DETAILED DESCRIPTION

[0031] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0032] like Figure 1-9 As shown, the present invention discloses a sand making roller mechanism, comprising:

[0033] A base 1, the upper part of which is connected with a housing 2, a sand making mechanism 3 and a grinding ring 4 cooperating with the sand making mechanism 3;

[0034] The sand making mechanism 3 comprises a main shaft 31, a support frame 32 and a grinding roller device 33. The support frame 32 is connected to the main shaft 31, and the grinding roller device 33 is rotatably connected to the support frame 32.

[0035] The grinding ring 4 is arranged outside the sand making mechanism 3 and is fixedly connected to the base 1; wherein,

[0036] The grinding roller device 33 includes a grinding roller sleeve 331 and a grinding roller 332 . The grinding roller sleeve 331 is rotatably connected to the support frame 32 . The grinding roller 332 is connected to the grinding roller sleeve 331 . The grinding roller 332 has a protrusion 333 that always forms a gap 335 between the grinding roller 332 and the grinding ring 4 .

[0037] The protrusion 333 of the present invention can ensure that there is always a gap 335 between the grinding roller 332 and the grinding ring 4, so that sand material of a specified particle size can be produced, and excessive fit between the grinding roller 332 and the grinding ring 4 can be avoided, thereby achieving the purpose of producing sand material of a specified particle size. The setting of the gap can effectively reduce the powder formation rate and improve the sand formation rate.

[0038] When the projection shape of the grinding roller 332 is circular, the protrusion 333 may adopt the following structure, such as Figure 4 , 5 As shown, when the structure of the grinding roller 332 is a cylinder, the protrusion 333 is a spiral structure, and the projection shape of the protrusion 333 is also circular, which is arranged on the side wall of the grinding roller 332 from top to bottom, and the reasonable design number of circles of the protrusion 333 is between 1.015-1.05, so that when the grinding roller 332 moves around the grinding ring 4, the protrusion 333 will always contact the grinding ring 4, so that the gap 335 always exists. In addition, when the protrusion 333 contacts the grinding ring 4, the movement trajectory of the protrusion 333 of the spiral structure will evenly contact the grinding ring 4, so that the grinding ring 4 is evenly worn, and the service life of the grinding ring 4 is increased.

[0039] In another embodiment of the present invention, the difference from the above embodiment is that, Figure 6 , 7 As shown, the protrusion 333 is at least three mutually parallel, staggered rectangular structures, which are sequentially distributed on the side wall of the grinding roller 332, and the total length of the protrusion 333 is 1.1-1.2 times the circumference of the grinding roller 332. Similarly, when the grinding roller 332 moves around the grinding ring 4, the protrusion 333 is always in contact with the grinding ring 4, and the movement trajectory of the protrusion 333 is evenly in contact with the grinding ring 4, so that the grinding ring 4 is evenly worn.

[0040] In addition, in other embodiments of this scheme, Figure 8-9 As shown, when the projection shape of the grinding roller 332 is a Lello triangle, and the structure of the grinding roller 332 is a Lello triangle, a protrusion 333 is provided on the side wall of the grinding roller 332, and the projection shape of the protrusion 333 is circular. Compared with the cylindrical grinding roller, the Lello triangle grinding roller of the same size has a gap 335 between the grinding roller 332 and the grinding ring 4 that changes from small to large and then to small when the material enters between the grinding roller 332 and the grinding ring 4 during the movement of the Lello triangle, so that the material can be gradually crushed. In addition, the extrusion angle of the side wall of the Lello triangle on the material is greater than the extrusion angle of the side wall of the cylinder on the material, which is convenient for extruding and crushing the material and improving the processing efficiency.

[0041] The base 1 is also provided with a scraper mechanism 5, which includes a scraper frame 51 and a scraper 52. The scraper frame 51 is fixedly connected to the main shaft 31, and the scraper 52 is installed above the scraper frame 51 and is tilted with the base 1. When the main shaft 31 rotates, it drives the grinding roller device 33 to rotate and also drives the scraper 52 to rotate, shoveling the material that has not been ground to the bottom to continue grinding between the grinding roller 332 and the grinding ring 4.

[0042] In some embodiments of the present invention, a blowing mechanism 6 is further included, which includes a fan (not shown) and an annular air duct 61. The fan is connected to the annular air duct 61. The annular air duct 61 is arranged on the outside of the housing 2 and is connected to the inside of the housing 2 through an air inlet 62. The level of the air inlet 62 is lower than that of the grinding ring 4. The airflow generated by the fan enters the inside of the housing 2 through the annular air duct 61 and the air inlet 62 to blow up the particles at the bottom.

[0043] In order to filter and screen the particles, the Raymond mill also includes a screening mechanism (not shown), which is arranged on the top of the housing 2 to filter the materials that meet the size requirements. The screening mechanism is a prior art and will not be described in detail here. In addition, in order to allow the particles to reach the top, the support frame 32 preferably adopts a plum blossom frame, and the particles enter the screening mechanism through the gaps of the plum blossom frame.

[0044] On the other hand, the present invention further discloses a Raymond mill, comprising the sand making roller mechanism of any of the above embodiments.

[0045] The working principle of the present invention is as follows:

[0046] The material to be processed enters the interior of the Raymond mill through the feed port 21, and the driving part drives the main shaft 31 to rotate, so that the grinding roller 332 cooperates with the grinding ring 4 to grind the material. The airflow generated by the external fan (not shown) enters the interior of the Raymond mill through the annular air duct 61 and the air inlet 62, blowing up the material on the base 1. The material enters the screening mechanism through the plum blossom frame and filters the material. The material that meets the size requirements enters the next process, and the material that does not meet the size requirements falls down and continues to be processed and ground.

[0047] For those skilled in the art, several modifications and improvements can be made without departing from the inventive concept of the present invention, all of which fall within the protection scope of the present invention.

Claims

1. A sand making roller mechanism, characterized in that: include: A base (1), wherein a housing (2), a sand making mechanism (3) and a grinding ring (4) cooperating with the sand making mechanism (3) are connected to the top of the base (1); The sand making mechanism (3) comprises a main shaft (31), a support frame (32) and a grinding roller device (33), wherein the support frame (32) is connected to the main shaft (31), and the grinding roller device (33) is rotatably connected to the support frame (32); The grinding ring (4) is arranged on the outside of the sand making mechanism (3) and is fixedly connected to the base (1); wherein: The grinding roller device (33) comprises a grinding roller sleeve (331) and a grinding roller (332); the grinding roller sleeve (331) is suspended on the support frame (32); the grinding roller (332) is connected to the grinding roller sleeve (331); and the grinding roller (332) has a protrusion (333) that always forms a gap (335) between the grinding roller (332) and the grinding ring (4).

2. The sand making roller mechanism according to claim 1, characterized in that: The projection shape of the grinding roller (332) is circular.

3. The sand making roller mechanism according to claim 2, characterized in that: The protrusion (333) is a spiral structure, and its projection shape is circular. It is arranged on the side wall of the grinding roller (332) from top to bottom, and the number of turns of the protrusion (333) is between 1.015 and 1.

05.

4. The sand making roller mechanism according to claim 2, characterized in that: The protrusions (333) are at least three mutually parallel, staggered rectangular structures, which are distributed in sequence on the side walls of the grinding roller (332); the total length of the protrusions (333) is 1.1-1.2 times the circumference of the grinding roller (332).

5. The sand making roller mechanism according to claim 1, characterized in that: The projection shape of the grinding roller (332) is a Lello triangle.

6. The sand making roller mechanism according to claim 5, characterized in that: The protrusion (333) is a spiral structure, and its projection shape is circular. It is arranged on the side wall of the grinding roller (332) from top to bottom, and the number of turns of the protrusion (333) is between 1.015 and 1.

05.

7. The sand making roller mechanism according to claim 1, characterized in that: A scraper mechanism (5) is also provided on the base (1), and the scraper mechanism (5) comprises a scraper frame (51) and a scraper (52), the scraper frame (51) is fixedly connected to the main shaft (31), and the scraper (52) is installed above the scraper frame (51) and is inclined relative to the base (1).

8. The sand making roller mechanism according to claim 1, characterized in that: It also comprises an air blowing mechanism (6), the blowing mechanism comprising a fan and an annular air duct (61), the fan being in communication with the annular air duct (61), the annular air duct (61) being arranged on the outside of the shell (2) and in communication with the inside of the shell (2) through an air inlet (62), and the level of the air inlet (62) being lower than the level of the grinding ring (4).

9. The sand making roller mechanism according to claim 1, characterized in that: It also comprises a screening mechanism, which is arranged on the top of the shell (2) and filters the material.

10. A Raymond mill, characterized in that: The invention comprises the sand making grinding roller mechanism as described in any one of claims 1 to 9.

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