Inner cutter head, vertical sand making machine rotor and vertical sand making machine

Abstract

The utility model relates to the technical field of mining machinery, and discloses an inner cutter head, a rotor and a vertical sand making machine. The inner cutter head includes an inner cutter head body, and the inner cutter head body has a first impact surface and a second impact surface. The first impact surface and the second impact surface are transitioned by a convex arc-shaped impact surface. A cutter head connecting portion is also provided on the inner cutter head body. The rotor of the vertical sand making machine includes a rotor body and the aforementioned inner cutter head. The rotor body includes a rotor upper plate, a rotor lower plate and a plurality of partitions arranged between the rotor upper plate and the rotor lower plate, and the inner end of each partition is connected to the inner cutter head. The vertical sand making machine includes a feed inlet, an upper cover, an upper cavity, a middle cavity, a base, a cover-lifting device and a motor assembly connected by bolts, and the upper cavity is provided with any of the vertical sand making machine rotors described above. The present application can enable the inner cutter head to form a crushing effect on the material while ensuring the formation of a material storage area in the rotor cavity, and can improve the crushing efficiency of the sand making machine.

Description

Technical Field

[0001] The utility model relates to the technical field of mining machinery, in particular to an inner cutter head, a rotor and a vertical sand making machine. Background Art

[0002] With the depletion of natural sand and gravel resources, the increasing requirements for ecological protection and the continuous increase in the demand for construction projects, machine-made sand and gravel are gradually replacing natural sand and gravel to meet the market demand. Vertical sand making machine is widely used in the medium and fine crushing of various high-hard and extra-hard materials such as various ores, cement, refractory materials, bauxite clinker, corundum, glass raw materials, etc. It is mainly composed of feed cylinder, impact cylinder, rotor, guard plate, discharge cylinder, vertical shaft and other components.

[0003] In the existing rotor structure, materials will be directly thrown from the front cutter head along the arc-shaped partition plate to the inside of the main barrel during rotation. A wear-resistant plate is provided at the position where the material enters the rotor cavity from the dividing cone. The position of the wear-resistant plate in the cavity ensures that the material storage area meets the requirements. The wear-resistant plate in the traditional circular rotor wears less. The purpose of designing the wear-resistant plate is only to ensure that the material is stored in the impeller memory area. It does not take into account the crushing effect of the material by the inner cutter head while ensuring the formation of the material storage area, resulting in low crushing efficiency of the existing sand making machine. Summary of the invention

[0004] The purpose of the utility model is to provide an inner cutter head, a rotor and a vertical sand making machine. The inner cutter head can be installed in the rotor of the vertical sand making machine to replace the wear-resistant plate, so that the material falling from the dividing cone can be crushed by the inner cutter head first, and the inner cutter head can have a crushing effect on the material while ensuring the formation of a material storage area in the rotor cavity, thereby increasing the number of times the sand making machine crushes the material, and further improving the crushing efficiency of the sand making machine.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0006] An inner cutter head comprises an inner cutter head body, wherein the inner cutter head body has a first impact surface and a second impact surface, the first impact surface and the second impact surface are transitioned by a convex arc-shaped impact surface, and a cutter head connecting portion is also provided on the inner cutter head body.

[0007] In one embodiment, the inner cutter head body includes a first impact portion and a second impact portion which are perpendicular to each other, at least a portion of the front side of the first impact portion is the first impact surface, a connecting groove is provided on the back side of the first impact portion, at least a portion of the front side of the second impact portion is the second impact surface, and the cutter head connecting portion is an inner cutter head connecting hole which is arranged on the second impact portion and is perpendicular to the second impact surface.

[0008] In one embodiment, the inner cutter head body includes a metal base portion and a ceramic wear-resistant portion embedded in the metal base portion.

[0009] In one embodiment, the thickness of the metal base portion covering the surface of the ceramic wear-resistant portion facing each of the first impact surface, the second impact surface and the arc-shaped impact surface is equal, and the thickness of the portion of the ceramic wear-resistant portion corresponding to the first impact surface is greater than the thickness of the portion of the ceramic wear-resistant portion corresponding to the second impact surface.

[0010] The utility model also provides a vertical sand making machine rotor, comprising a rotor body and an inner cutter head as described in any of the preceding items, the rotor body comprising a rotor upper plate, a rotor lower plate and a plurality of partitions arranged between the rotor upper plate and the rotor lower plate to divide the rotor upper plate and the rotor lower plate into a plurality of flow channels, a dividing cone is installed in the middle of the interior of the rotor body; wherein the inner end of each of the partitions is connected to the inner cutter head, the first impact surface of the inner cutter head faces the dividing cone, the outer end of each of the partitions is connected to a front cutter head, and hammer heads are installed on the rotor body at both upper and lower ends of the front cutter head.

[0011] In one embodiment, the inner end of each of the separators is connected to two upper and lower inner cutter heads.

[0012] In one embodiment, both the rotor upper plate and the rotor lower plate adopt a multi-blade structure.

[0013] In one embodiment, the front cutter head includes a front cutter head body and a wear-resistant alloy block fixedly connected to the end of the front cutter head body. The size of the wear-resistant alloy block is larger than the size of the end of the front cutter head body, and the thickness of the wear-resistant alloy block gradually becomes thinner along the material outflow path.

[0014] The utility model also provides a vertical sand making machine, comprising a feed port, an upper cover, an upper cavity, a middle cavity, a base, a cover lifting device and a motor assembly connected by bolts, wherein the upper cavity is provided with a vertical sand making machine rotor as described in any of the foregoing items; the upper cavity is configured as a crushing cavity or a shaping cavity, and motor assembly connecting flanges are reserved on both sides of the base; a vibration protection device is also provided on the outside of the upper cavity, which is used to control the operation of the vertical sand making machine according to a monitored vibration signal.

[0015] In one embodiment, an impact lining is installed on the inner wall of the upper cavity, and the relationship between the distance between the rotor of the vertical sand making machine and the impact lining and the maximum feed particle size is: L=K*3*dmax, where L is the distance between the impeller and the impact lining; K is a coefficient with a value range of (0.85-1.2); dmax is the maximum feed particle size.

[0016] The inner cutter head provided in this embodiment has a protruding arc-shaped impact surface designed between the first impact surface and the second impact surface, so that the working surface of the inner cutter head is equivalent to a hammer head, which can crush the material. When the inner cutter head is installed in the rotor of the vertical sand making machine to replace the wear-resistant plate, the inner cutter head in the form of a hammer head can not only crush the material falling from the material dividing cone, but also the second impact surface of the inner cutter head can form a sufficient material storage area in the rotor cavity to protect the front cutter head handle, front cutter head connecting plate, pins, bolts, arc-shaped partition plate and other components inside the rotor. In other words, after the inner cutter head replaces the wear-resistant plate, the inner cutter head can form a crushing effect on the material while ensuring that a sufficient material storage area is formed in the rotor cavity, thereby increasing the number of times the vertical sand making machine containing this inner cutter head crushes the material, and further improving the crushing efficiency of the vertical sand making machine containing this inner cutter head.

[0017] The vertical sand making machine rotor and vertical sand making machine provided in this embodiment include the above-mentioned inner cutter head, and their functions and effects are the same as those of the above-mentioned inner cutter head, which will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 A schematic diagram of the three-dimensional structure of an inner cutter head provided in a specific embodiment of the utility model;

[0020] Figure 2 A schematic cross-sectional view of an inner cutter head provided in a specific embodiment of the utility model;

[0021] Figure 3 A schematic diagram of the three-dimensional structure of a vertical sand making machine rotor provided in a specific embodiment of the utility model;

[0022] Figure 4 A schematic diagram of the main structure of a vertical sand making machine rotor provided in a specific embodiment of the utility model;

[0023] Figure 5 for Figure 4 AA cross-sectional structural diagram;

[0024] Figure 6 A schematic diagram of the structure of a front cutter head provided in a specific implementation manner of the utility model;

[0025] Figure 7A schematic diagram of the structure of a vertical sand making machine provided in a specific implementation manner of the utility model;

[0026] Figure 8 The present invention is a schematic structural diagram of the positional relationship between the rotor and the impact liner of a vertical sand making machine provided in a specific implementation manner of the present invention.

[0027] The following are marked in the accompanying drawings:

[0028] 100. Vertical sand making machine rotor; 1. Rotor upper plate; 2. Rotor lower plate; 3. Material dividing cone; 4. Inner cutter head; 401. Metal base part; 402. Ceramic wear-resistant part; 41. First impact surface; 42. Second impact surface; 43. Arc-shaped impact surface; 44. Cutter head connecting part; 45. First impact part; 46. Second impact part; 47. Connecting groove; 5. Inner cutter head mounting screw; 6. Front cutter head; 61. Wear-resistant alloy block; 62. Front cutter head stabilizing pin; 63. High-strength bolt; 7. Hammer head; 8. Separator;

[0029] 200, feed port; 300, upper cover; 500, upper cavity; 501, impact lining; 600, middle cavity; 700, base; 701, motor assembly connecting flange; 800, cover lifting device; 900, motor assembly. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] Please refer to Figures 1 to 8 , Figure 1 A schematic diagram of the three-dimensional structure of an inner cutter head provided in a specific embodiment of the utility model; Figure 2 A schematic cross-sectional view of an inner cutter head provided in a specific embodiment of the utility model; Figure 3 A schematic diagram of the three-dimensional structure of a vertical sand making machine rotor provided in a specific embodiment of the utility model; Figure 4 A schematic diagram of the main structure of a vertical sand making machine rotor provided in a specific embodiment of the utility model; Figure 5 for Figure 4 AA cross-sectional structural diagram; Figure 6 A schematic diagram of the structure of a front cutter head provided in a specific implementation manner of the utility model; Figure 7 A schematic structural diagram of a vertical sand making machine provided in a specific implementation manner of the utility model; Figure 8The present invention is a schematic structural diagram of the positional relationship between the rotor and the impact liner of a vertical sand making machine provided in a specific implementation manner of the present invention.

[0032] In a specific embodiment, an inner cutter head 4 provided in this embodiment includes an inner cutter head body, the inner cutter head body has a first impact surface 41 and a second impact surface 42, the first impact surface 41 and the second impact surface 42 are transitioned by a convex arc-shaped impact surface 43, and a cutter head connecting portion 44 is also provided on the inner cutter head body, and the cutter head connecting portion 44 is used to connect the inner cutter head to the rotor of the vertical sand making machine.

[0033] The inner cutter head 4 provided in this embodiment has a protruding arc-shaped impact surface 43 between the first impact surface 41 and the second impact surface 42, so that the working surface of the inner cutter head is equivalent to a hammer head, which can crush the material. When the inner cutter head 4 is installed in the rotor 100 of the vertical sand making machine to replace the wear-resistant plate, the inner cutter head 4 in the form of a hammer head can not only crush the material falling from the material dividing cone 3, but also the first impact surface 41 or the second impact surface 42 of the inner cutter head 4 can form a sufficient material storage area in the rotor cavity to protect the front cutter head handle, the front cutter head connecting plate, the pins, the bolts, the arc-shaped partition plate and other components inside the rotor. In other words, after the inner cutter head 4 replaces the wear-resistant plate, the inner cutter head 4 can form a crushing effect on the material while ensuring that a sufficient material storage area is formed in the rotor cavity, thereby increasing the number of times the vertical sand making machine containing the inner cutter head 4 crushes the material, and further improving the crushing efficiency of the vertical sand making machine containing the inner cutter head 4.

[0034] On the basis of the above embodiment, the inner cutter head body includes a first impact portion 45 and a second impact portion 46 which are perpendicular to each other, at least a portion of the front of the first impact portion 45 is a first impact surface 41, a connecting groove 47 is provided on the back of the first impact portion 45, at least a portion of the front of the second impact portion 46 is a second impact surface 42, and the cutter head connecting portion 44 is an inner cutter head connecting hole which is arranged on the second impact portion 46 and is perpendicular to the second impact surface. When the inner cutter head 4 is connected to the partition 17 in the rotor cavity, the end of the partition 17 can be inserted into the connecting groove 47, and then the inner cutter head is connected to the partition 17 through the fastener (two inner cutter head mounting screws 5) through the inner cutter head connecting hole and the connecting hole on the partition. The connection groove 47 is provided to cooperate with the end of the partition 17, which can have a limiting effect on the inner cutter head 4, so that the inner cutter head 4 is more firmly connected to the partition 17.

[0035] Preferably, an arc chamfer is provided at one end of the front surface of the first impact part 45 which is not connected to the second impact part 46 to avoid stress concentration therein and to avoid easy damage after friction with stones.

[0036] In some embodiments, the inner cutter head body includes a metal base portion 401 and a ceramic wear-resistant portion 402 embedded in the metal base portion 401. The method of internally embedded ceramics can significantly improve the wear resistance and bonding firmness of the inner cutter head, because ceramics have better wear resistance than metals. In addition, completely embedding ceramics in the metal base can significantly improve the bonding strength between ceramics and metal bases compared to only embedding ceramics on the surface of the metal base, and the reliability is higher. When in use, when a part of the metal base portion 401 outside the inner cutter head is worn away, the ceramic wear-resistant portion 402 can be exposed. At this time, the ceramic wear-resistant portion 402 is in direct contact with the stone and has good wear resistance. During production, the shape of the ceramic wear-resistant portion 402 can be made first, and then the metal is poured on the outside of the ceramic wear-resistant portion 402. Preferably, the metal poured outside the ceramic wear-resistant portion is high-chromium cast iron.

[0037] On the basis of the above embodiment, the thickness of the metal base part 401 covering the surface of the ceramic wear-resistant part 402 facing each of the first impact surface 41, the second impact surface 42 and the arc-shaped impact surface 43 is equal, so that the main wear surface of the inner cutter head 4 can be evenly exposed after wear, so that the main wear surface of the inner cutter head 4 can be evenly worn to improve the service life of the inner cutter head 4 as a whole. The thickness of the part of the ceramic wear-resistant part 402 corresponding to the first impact surface 41 is greater than the thickness of the part of the ceramic wear-resistant part 402 corresponding to the second impact surface 42. When in use, the first impact surface 41 of the inner cutter head 4 is directly opposite to the dividing cone to withstand the relatively large impact force of the stone.

[0038] The embodiment of the utility model further provides a vertical sand making machine rotor 100, comprising a rotor body and the aforementioned inner cutter head 4. The rotor body comprises a rotor upper plate 1, a rotor lower plate 2, and a plurality of partitions 8 arranged between the rotor upper plate 1 and the rotor lower plate 2 to divide the rotor upper plate 1 and the rotor lower plate 2 into a plurality of flow channels, and a material dividing cone 3 is installed in the middle of the rotor body.

[0039] Among them, the inner end of each partition 8 is connected to the aforementioned inner cutter head 4, the first impact surface of the inner cutter head 4 is opposite to the dividing cone 3, the outer end of each partition 9 is connected to the front cutter head 6, and hammer heads 7 are installed at the upper and lower ends of the front cutter head 6 on the rotor body.

[0040] Since the vertical sand making machine rotor of this embodiment includes the aforementioned inner cutter head 4, its functions and effects are the same as those of the rotor including the aforementioned inner cutter head 4. Specifically, the overall improved vertical sand making machine rotor 100 increases the number of times of stone crushing, and the overall crushing process includes: 1. The inner cutter head 4 crushes the stone; 2. The stone is thrown out of the rotor and hits the internal impact lining 501 of the sand making machine for crushing; 3. The stone is crushed between the stone after it is thrown out of the rotor and the stone that falls after hitting the impact lining; 4. The hammer head 7 and the stone that falls and hits the impact lining 501 are crushed; 5. The front cutter head 6 and the stone that falls and hits the impact lining 501 are crushed; a total of 5 crushing times, compared with the traditional rotor, the number of crushing times is increased, so that the crushing efficiency of the vertical sand making machine including this vertical sand making machine rotor 100 can be improved.

[0041] In some embodiments, the inner end of each separator 8 is connected to an upper and lower inner cutter head 4. On the one hand, the weight of the inner cutter head can be reduced, and the installation is convenient. On the other hand, since the wear amount of the upper inner cutter head is different from the wear amount of the lower inner cutter head, when the wear of the inner cutter head at the lower part reaches a certain degree, the upper inner cutter head and the lower inner cutter head can be swapped, thereby improving the utilization rate of the upper and lower inner cutter heads and reducing production costs.

[0042] In some embodiments, both the rotor upper plate 1 and the rotor lower plate 2 adopt a multi-blade structure. Preferably, both the rotor upper plate 1 and the rotor lower plate 2 of this embodiment adopt a three-blade structure. The circular structure of the rotor of the traditional sand making machine will impact the rotor body during the material crushing process, causing wear. In this embodiment, according to the wear of the rotor body in the actual production process, the circular rotor structure is changed to a three-blade rotor structure, which reduces the impact surface of the material on the rotor body compared to the circular rotor structure, thereby reducing the wear of the material on the rotor body.

[0043] In addition, if the blade structure rotor is replaced with a cutter head, hammer head, or liner, a maintenance hole needs to be opened in the middle of the sand making machine cavity. Due to structural limitations, the operating space is very limited, making it very difficult to replace parts, which is time-consuming and laborious. Since the blade structure rotor has gaps between the blades, it is not necessary to add a maintenance hole in the middle of the cavity, which can save production costs. After opening the upper cover 300 of the machine body, the front blade head 6, hammer head 7, etc. can be replaced. The maintenance space is large, which is very convenient compared to replacing parts in the maintenance hole.

[0044] In some embodiments, the front cutter head 6 includes a front cutter head body and a wear-resistant alloy block 61 fixedly connected to the end of the front cutter head body. The size of the wear-resistant alloy block 61 is larger than the size of the end of the front cutter head body, and the thickness of the wear-resistant alloy block 61 gradually becomes thinner along the path where the material flows out.

[0045] The wear-resistant alloy block 61 at the end of the front blade body is designed as a whole piece, with a larger and thicker size, and according to the degree of wear, the thickness of the wear-resistant alloy block 61 gradually becomes thinner along the path of material outflow, that is, the wear-resistant alloy block 61 near the inside of the rotor is thicker, and the wear-resistant alloy block 61 near the outside of the rotor is thinner, and the general shape of the wear-resistant alloy block 61 is a trapezoid. The purpose of this setting is to play a wear-resistant role on the material thrown out of the discharge port, and secondly, after reducing the size of the crushing chamber, the front blade 6 plays the role of a hammer head, hitting and crushing the material that falls and hits back after hitting the impact liner 501.

[0046] On the basis of the above-mentioned embodiment, the front cutter head 6 is fixed by the front cutter head stabilizing pin 62 and the high-strength bolt 63. Accordingly, two screw holes and one pin hole are provided on the front cutter head 6. The original front cutter head fixing method was only a high-strength bolt connection. The bolts bear both tension and shear force, and the safety factor is low. If the connection strength needs to be increased, the bolt size needs to be increased, and the space for change is very limited. In this embodiment, the fixing method of the front cutter head is changed to a front cutter head stabilizing pin 62 + high-strength bolt connection 63. The front cutter head stabilizing pin 62 bears shear force, and the high-strength bolt 63 only bears tension, which significantly improves the connection strength.

[0047] The embodiment of the utility model also provides a vertical sand making machine, including a feed port 200, an upper cover 300, an upper cavity 500, a middle cavity 600, a base 700, a cover-lifting device 800 and a motor assembly 900 connected by bolts, wherein the upper cavity 500 is provided with the aforementioned vertical sand making machine rotor 100. The upper cavity 500 is configured as a crushing cavity or a shaping cavity, and motor assembly connection flanges 701 are reserved on both sides of the base 700. A vibration protection device (not shown in the figure) is also provided outside the upper cavity 500, which is used to control the operation of the vertical sand making machine according to the monitored vibration signal.

[0048] Since the vertical sand making machine rotor of this embodiment includes the aforementioned vertical sand making machine rotor 100, its functions and effects include the functions and effects of the aforementioned vertical sand making machine rotor. In addition, the various components of the vertical sand making machine are connected by high-strength bolts, which are convenient for disassembly and maintenance. The upper cavity 500 is set as a crushing cavity or a shaping cavity, that is, the upper cavity 500 can be installed with a crushing cavity or a shaping cavity according to customer needs, respectively realizing the functions of stone hitting iron and stone hitting stone, thereby meeting the needs of sand making and shaping respectively, and realizing dual-purpose of one machine. Motor assembly connection flanges 701 are reserved on both sides of the base 700, and can be equipped with dual motors or a single motor according to customer on-site needs, thereby reserving upgrading space for the equipment in the later stage. When installing a single motor, the motor assembly connection flange 701 on the motor side is not installed, and the observation hole cover is used to cover the installation hole, thereby maintaining the coordination and unity of the appearance.

[0049] In some embodiments, an impact lining 501 is installed on the inner wall of the upper cavity 500. The relationship between the distance between the vertical sand making machine rotor 100 and the impact lining 501 and the maximum feed particle size is: L=K*3*dmax, where L is the distance between the rotor and the impact lining; K is a coefficient with a value range of (0.85-1.2), which is determined according to the hardness of the stone. Stones with high hardness cause greater wear on the impeller, so a larger value should be taken; stones with low hardness cause less wear on the impeller, so a smaller value should be taken; dmax is the maximum feed particle size.

[0050] The distance between the rotor and the annular impact liner in the traditional sand making machine is relatively large (for example, the distance between the impeller and the impact plate of the traditional 1145 sand making machine is about 450mm), the purpose is to form a relatively large stone-to-stone crushing space and prevent the material from wearing the impeller. However, the applicant found that reducing the distance between the rotor 100 and the impact liner 501 of the vertical sand making machine can increase the probability of the hammer head 8 hitting the material that is counterattacked, that is, by reducing the size of the crushing space, the sand forming rate can be increased, and the front cutter head 6 can also play a crushing role on the stone that is counterattacked by the impact liner 501. Therefore, the relationship between the distance between the rotor 100 and the impact liner 501 of the vertical sand making machine and the maximum feed particle size is redesigned: L=K*3*dmax. The distance between the impact liner 501 and the rotor 100 of the vertical sand making machine designed according to this formula in this embodiment can significantly improve the sand forming rate of the vertical sand making machine.

[0051] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0052] The utility model is described in detail above. Specific examples are used in this article to illustrate the principle and implementation method of the utility model. The description of the above embodiments is only used to help understand the method and core idea of ​​the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model. Therefore, the utility model will not be limited to the embodiments described herein, but will conform to the widest range consistent with the principles and novel features disclosed herein.

Claims

1. An inner cutter head (4), characterized in that: The inner cutter head body comprises a first impact surface (41) and a second impact surface (42), wherein the first impact surface (41) and the second impact surface (42) are transitioned via a convex arc-shaped impact surface (43), and a cutter head connecting portion (44) is also provided on the inner cutter head body.

2. The inner cutter head according to claim 1, characterized in that: The inner cutter head body comprises a first impact portion (45) and a second impact portion (46) which are perpendicular to each other, at least a portion of the front surface of the first impact portion (45) is the first impact surface (41), a connecting groove (47) is provided on the back surface of the first impact portion (45), at least a portion of the front surface of the second impact portion (46) is the second impact surface (42), and the cutter head connecting portion (44) is an inner cutter head connecting hole which is arranged on the second impact portion (46) and is perpendicular to the second impact surface (42).

3. The inner cutter head according to claim 1, characterized in that: The inner cutter head body comprises a metal base portion (401) and a ceramic wear-resistant portion (402) embedded in the metal base portion (401).

4. The inner cutter head according to claim 3, characterized in that: The thickness of the metal base portion covering the surface of the ceramic wear-resistant portion (402) facing each of the first impact surface (41), the second impact surface (42) and the arc-shaped impact surface (43) is equal, and the thickness of the portion of the ceramic wear-resistant portion corresponding to the first impact surface (41) is greater than the thickness of the portion of the ceramic wear-resistant portion corresponding to the second impact surface.

5. A vertical sand making machine rotor (100), characterized in that: include: A rotor body, the rotor body comprising a rotor upper plate (1), a rotor lower plate (2), and a plurality of partitions (8) arranged between the rotor upper plate (1) and the rotor lower plate (2) to divide the rotor upper plate and the rotor lower plate into a plurality of flow channels, a material dividing cone (3) being installed in the middle of the rotor body; and The inner cutter head (4) according to any one of claims 1 to 4; The inner end of each of the partitions (8) is connected to the inner cutter head (4), the first impact surface (41) of the inner cutter head (4) faces the dividing cone (3), the outer end of each of the partitions (8) is connected to the front cutter head (6), and hammer heads (7) are installed on the rotor body at both the upper and lower ends of the front cutter head (6).

6. The vertical sand making machine rotor according to claim 5, characterized in that: The inner end of each of the partitions (8) is connected to two upper and lower inner cutter heads (4).

7. The vertical sand making machine rotor according to claim 5, characterized in that: The rotor upper plate (1) and the rotor lower plate (2) both adopt a multi-blade structure.

8. The vertical sand making machine rotor according to claim 7, characterized in that: The front cutter head (6) comprises a front cutter head body and a wear-resistant alloy block (61) fixedly connected to the end of the front cutter head body, the size of the wear-resistant alloy block (61) is larger than the size of the end of the front cutter head body, and the thickness of the wear-resistant alloy block (61) gradually becomes thinner along the path where the material flows out.

9. A vertical sand making machine, characterized in that: The invention comprises a feed port (200), an upper cover (300), an upper cavity (500), a middle cavity (600), a base (700), a cover-lifting device (800) and a motor assembly (900) connected by bolts, wherein the upper cavity (500) is provided with a vertical sand making machine rotor (100) as claimed in any one of claims 5 to 8; the upper cavity (500) is configured as a crushing cavity or a shaping cavity, and motor assembly connection flanges (701) are reserved on both sides of the base (700); a vibration protection device is also provided on the outside of the upper cavity (500) for controlling the operation of the vertical sand making machine according to a monitored vibration signal.

10. The vertical sand making machine according to claim 9, characterized in that: An impact lining (501) is installed on the inner wall of the upper cavity (500), and the relationship between the distance between the rotor (100) of the vertical sand making machine and the impact lining (501) and the maximum feed particle size is: L=K*3*dmax, where L is the distance between the impeller and the impact lining; K is a coefficient with a value range of (0.85-1.2); and dmax is the maximum feed particle size.

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