Material crushing device

Abstract

The utility model provides a material crushing device, which comprises a box body provided with a material crushing cavity and comprising a feed port and a discharge port, and the feed port and the discharge port are both communicated with the material crushing cavity; the smashing part comprises a first smashing assembly and a second smashing assembly, a material conveying channel is arranged between the first smashing assembly and the second smashing assembly, the first smashing assembly is arranged close to the feeding port, and the second smashing assembly is provided with a grinding cavity which extends in the horizontal direction. The top of the grinding cavity can generate relative displacement in the horizontal direction relative to the bottom of the grinding cavity so as to crush materials crushed by the first crushing assembly, and the crushing precision of the second crushing assembly is higher than that of the first crushing assembly; and the feeding assembly is located between the crushing part and the discharging opening, and the feeding assembly can convey the materials crushed by the crushing part to the discharging opening. According to the technical scheme provided by the utility model, the problem of poor crushing effect of a crusher in the prior art can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of crushing, in particular to a crushing device. Background Art

[0002] Coal pulverizer, also known as coal crusher, is one of the commonly used equipment in coal crushing and coal gangue crushing production lines. It can crush large pieces of coal into coal of reasonable size for easy use.

[0003] For example, patent CN212651893U discloses a coal pulverizer, which includes a shell, a feed bin, a discharge port, and a crushing device. The feed bin is fixed to the top of the shell and is connected to the shell. The discharge port is located at the bottom of the shell. The crushing device includes a crushing roller and a motor. There are two crushing rollers, which are arranged in parallel and cooperate with each other. The two crushing rollers are both arranged inside the shell, and there is a gap between the crushing rollers and the side walls of the shell for rotating the crushing rollers. The two crushing rollers are arranged in parallel. There are two motors, which are respectively connected to the two crushing rollers. A dust reduction device is also provided on the shell.

[0004] When using the above technology, it was found that the following technical problems exist in the existing technology: the above existing crusher simply crushes large pieces of coal and directly outputs them. During the crushing process, it is inevitable that some coal will not be crushed properly, and the coal that does not meet the requirements will be mixed with the crushed finished products, resulting in poor overall coal crushing effect. Utility Model Content

[0005] The utility model provides a crushing device to solve the problem of poor crushing effect of the crusher in the prior art.

[0006] The utility model provides a crushing device, which includes: a box body, which has a crushing cavity, and the box body includes a feed port and a discharge port, both of which are connected to the crushing cavity, the feed port is located at the top of the crushing cavity, and the discharge port is located at the bottom of the crushing cavity; a crushing part, at least part of which is located in the crushing cavity, the crushing part includes a first crushing assembly and a second crushing assembly, a material transport channel is provided between the first crushing assembly and the second crushing assembly, the first crushing assembly is arranged close to the feed port, the second crushing assembly has a grinding cavity, the grinding cavity extends in a horizontal direction, the top of the grinding cavity can generate relative displacement in the horizontal direction relative to the bottom of the grinding cavity, so as to crush the material crushed by the first crushing assembly, and the crushing accuracy of the second crushing assembly is higher than that of the first crushing assembly; a feeding assembly is located between the crushing part and the discharge port, and the feeding assembly can transport the material crushed by the crushing part to the discharge port.

[0007] Furthermore, the second crushing assembly includes a first driving part, a first grinding plate and a second grinding plate, the first grinding plate forms the bottom of the grinding chamber, the second grinding plate forms the top of the grinding chamber, and the first driving part drives the first grinding plate and the second grinding plate to move toward or in opposite directions in the horizontal direction.

[0008] Furthermore, the first driving part includes: a support plate, which is arranged on the outside of the box; a first slider and a second slider, the first slider and the second slider are arranged on the support plate at intervals in the horizontal direction, the first slider and the second slider are respectively movably arranged on the support plate in the horizontal direction, the first slider is driven and connected to the first grinding plate, and the second slider is driven and connected to the second grinding plate.

[0009] Furthermore, the first driving part also includes: a first driving member, fixedly provided on the first slider, the first driving member having a first output end; a transmission assembly, including a transmission rod and a connecting rod, one end of the transmission rod rotates synchronously with the first output end, the other end of the transmission rod is hinged to one end of the connecting rod, and the other end of the connecting rod is hinged to the second slider, and the axis of the first output end is perpendicular to the moving direction of the first slider.

[0010] Furthermore, a first mounting hole and a second mounting hole are provided on the support plate, and the first mounting hole and the second mounting hole extend in a horizontal direction. The first driving part also includes a first spring and a second spring. Two first springs are provided in the first mounting hole, and two second springs are provided in the second mounting hole. The two first springs are respectively located on both sides of the first slider in the moving direction of the first slider, one end of the first spring abuts against the inner wall of the first mounting hole, and the other end of the first spring abuts against the first slider. The two second springs are respectively located on both sides of the second slider in the moving direction of the second slider, the two ends of the second spring abut against the inner wall of the second mounting hole, and the other two ends of the second spring abut against the second slider.

[0011] Furthermore, the crushing part also includes a filter part, which is arranged in the crushing cavity, and the filter part is located between the first crushing component and the second crushing component. The filter part has a first filter hole, and the filter part has a first end and a second end relatively arranged along the material conveying direction. The height of the first end is higher than the height of the second end. The second crushing component is located below the second end. The filter part forms a material transport channel, and the feeding component is located below the filter part and the second crushing component. The feeding component can transport the material filtered by the first filter hole and the material crushed by the second crushing component.

[0012] Furthermore, a drop hole is provided on the second grinding plate, and a second filter hole is provided on the first grinding plate. The drop hole and the second filter hole are respectively connected to the grinding chamber. The diameter of the drop hole is larger than the diameter of the first filter hole and the second filter hole, and the feeding assembly is located below the second filter hole.

[0013] Furthermore, the feeding assembly includes: a second driving member having a second output end; a spiral conveying roller rotatably arranged in the crushing cavity, the spiral conveying roller rotates synchronously with the second output end, and the spiral conveying roller drives the material to move toward the discharge port.

[0014] Furthermore, the second crushing assembly also includes a plurality of first crushing teeth and a plurality of second crushing teeth, the plurality of first crushing teeth are arranged at intervals on the first grinding plate, the plurality of second crushing teeth are arranged at intervals on the second grinding plate, the first crushing teeth and the second crushing teeth are staggered, and the first crushing teeth and the second crushing teeth cooperate with each other to crush the material.

[0015] Furthermore, the first crushing assembly includes a first crushing roller and a second crushing roller arranged side by side in a horizontal direction, a plurality of first protrusions are arranged at intervals on the periphery of the first crushing roller, and a plurality of second protrusions are arranged at intervals on the periphery of the second crushing roller, the first crushing roller and the second crushing roller are rotatably arranged in the crushing cavity, and the first protrusions cooperate with the second protrusions to crush the material.

[0016] The pulverizing unit includes a first pulverizing assembly and a second pulverizing assembly. The first and second pulverizing assemblies can pulverize the material multiple times, reducing the possibility of inadequate pulverization resulting in a particle size that does not meet customer requirements. This prevents poor pulverization of the material in a single grinding operation, thereby improving the pulverizing efficiency of the pulverizing device. The second pulverizing assembly includes a grinding chamber extending horizontally. The top of the grinding chamber is capable of horizontal displacement relative to the bottom of the grinding chamber. Compared to a chamber where the top of the grinding chamber is capable of vertical displacement relative to the bottom of the grinding chamber, the material is more likely to fall due to gravity during pulverization, resulting in inadequate pulverization. This arrangement allows the material to remain in the grinding chamber longer, resulting in more complete pulverization. The second pulverizing assembly 30 has a higher pulverizing accuracy than the first pulverizing assembly 20. Upon entering the pulverizing chamber, the material is first roughly pulverized by the first pulverizing assembly, breaking large pieces into smaller pieces. The material then enters the second pulverizing assembly for finer grinding, further improving the pulverizing efficiency of the pulverizing device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings constituting part of this application are provided to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are provided to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0018] Figure 1 The schematic diagram of the structure of the crushing device provided by the utility model is shown;

[0019] Figure 2 The figure shows the internal structure of the crushing device provided by the present invention;

[0020] Figure 3 The figure shows an assembly diagram of the second crushing assembly and the first driving part provided by the present invention;

[0021] Figure 4 It shows a schematic structural diagram of the first driving part provided by the utility model;

[0022] Figure 5 It shows a schematic structural diagram of the second crushing assembly provided by the utility model;

[0023] Figure 6 The figure shows a structural diagram of the feeding assembly provided by the present invention.

[0024] The above drawings include the following reference numerals:

[0025] 10. Box body; 11. Crushing chamber;

[0026] 12. Feed port; 13. Discharge port;

[0027] 131. Mounting frame; 132. Discharging plate;

[0028] 20. First crushing assembly; 21. First crushing roller; 22. Second crushing roller;

[0029] 30. Second crushing assembly; 301. Grinding chamber;

[0030] 31. First driving unit;

[0031] 310, support plate; 3100, first mounting hole; 3101, second mounting hole;

[0032] 311. First slider; 3111. First connecting block;

[0033] 312, second slider; 3121, second connecting block;

[0034] 313, first driving member;

[0035] 314, transmission rod; 315, connecting rod;

[0036] 32. First grinding plate; 330. Second filter hole;

[0037] 33. Second grinding plate; 320. Blanking hole;

[0038] 34. First crushing tooth; 35. Second crushing tooth;

[0039] 36. First spring; 37. Second spring;

[0040] 40. Material transport channel;

[0041] 50. Feeding assembly; 51. Second driving member; 52. Screw conveying roller;

[0042] 61. First filter hole;

[0043] 62, first end; 63, second end;

[0044] 70. Turn the gear. DETAILED DESCRIPTION

[0045] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0046] like Figures 1 to 6 As shown, an embodiment of the present invention provides a crushing device, which includes: a housing 10, a crushing unit, and a feeding assembly 50. The housing 10 has a crushing chamber 11, and the housing 10 includes a feed port 12 and a discharge port 13. Both the feed port 12 and the discharge port 13 are connected to the crushing chamber 11. The feed port 12 is located at the top of the crushing chamber 11, and the discharge port 13 is located at the bottom of the crushing chamber 11. At least a portion of the pulverizing section is located within the crushing chamber 11. The pulverizing section includes a first pulverizing assembly 20 and a second pulverizing assembly 30. A material transport passage 40 is defined between the first pulverizing assembly 20 and the second pulverizing assembly 30. The first pulverizing assembly 20 is positioned adjacent to the feed port 12. The second pulverizing assembly 30 includes a grinding chamber 301 extending horizontally. The top of the grinding chamber 301 is capable of horizontal displacement relative to the bottom of the grinding chamber 301 to further pulverize the material pulverized by the first pulverizing assembly 20. The pulverizing precision of the second pulverizing assembly 30 is greater than that of the first pulverizing assembly 20. The pulverizing precision refers to the degree of pulverization of the material; the higher the degree of pulverization, the smaller the particle size of the pulverized material. A feed assembly 50 is located between the pulverizing section and the discharge port 13 and is capable of transporting the pulverized material to the discharge port 13.

[0047] Applying the technical solution of the present invention, the crushing section includes a first crushing assembly 20 and a second crushing assembly 30. The first crushing assembly 20 and the second crushing assembly 30 can crush the material multiple times, reducing the possibility that the material is not crushed in place, resulting in the particle size of the material not meeting the customer's needs, avoiding the poor crushing effect of the material in a single grinding, and improving the crushing effect of the crushing device. The second crushing assembly 30 has a grinding chamber 301, which extends in the horizontal direction. The top of the grinding chamber 301 can produce relative displacement in the horizontal direction relative to the bottom of the grinding chamber 301. Compared with the top of the grinding chamber that can produce relative displacement in the vertical direction relative to the bottom of the grinding chamber, the material is easily crushed due to gravity when being crushed. The setting of the present application can make the material stay in the grinding chamber 301 for a longer time, and can crush the material more fully. The crushing accuracy of the second crushing component 30 is higher than that of the first crushing component 20. When the material enters the crushing chamber, it will first be roughly crushed by the first crushing component 20, crushing the large pieces of material into small pieces, and then enter the second crushing component 30 for further fine grinding, which can further improve the crushing effect of the crushing device on the material.

[0048] like Figure 2 As shown, the second pulverizing assembly 30 includes a first drive unit 31, a first grinding plate 32, and a second grinding plate 33. The first grinding plate 32 forms the bottom of the grinding chamber 301, while the second grinding plate 33 forms the top of the grinding chamber 301. The first drive unit 31 drives the first and second grinding plates 32, 33 to move horizontally toward or in opposite directions. This prevents inadequate grinding of the material due to the first and second grinding plates 32, 33 moving in the same direction, ensuring effective pulverization. Furthermore, the first drive unit 31 drives the grinding plates, enhancing drive flexibility and precision.

[0049] Specifically, the first drive unit 31 includes a support plate 310, a first slider 311, and a second slider 312. The support plate 310 is positioned outside the housing 10 to prevent material within the crushing chamber 11 from falling onto the first drive unit 31, potentially blocking or jamming the first drive unit 31 and ensuring its proper operation. The first slider 311 and the second slider 312 are horizontally spaced apart on the support plate 310. This prevents collisions between the first and second sliders 311, 312 during movement and maximizes the relative displacement between the first and second grinding plates 32, 33. The first and second sliders 311, 312 are each movably mounted horizontally on the support plate 310. The first slider 311 is drivingly coupled to the first grinding plate 32, while the second slider 312 is drivingly coupled to the second grinding plate 33. Separately driving the first and second grinding plates 32, 33 using different sliders reduces the flexibility and speed of driving the first and second grinding plates 32, 33.

[0050] In this embodiment, there is no limitation on the manner in which the first slider 311 and the second slider 312 move on the support plate 310. A movable slide groove can be provided on the support plate 310, and a protrusion can be provided on the slider, so that the slider moves on the support plate 310 by slidingly engaging with the slide groove through the protrusion. Alternatively, a slide rod can be provided on the support plate 310, and the slider can be movably mounted on the slide rod.

[0051] The first slider 311 is fixedly connected to the first grinding plate 32 via the first connecting block 3111 , and the second slider 312 is fixedly connected to the second grinding plate 33 via the second connecting block 3121 , so as to ensure driving stability and synchronization.

[0052] like Figure 3 As shown, the first driving part 31 also includes: a first driving member 313 and a transmission assembly. The first driving member 313 is fixedly arranged on the first slider 311, and the first driving member 313 has a first output end. The transmission assembly includes a transmission rod 314 and a connecting rod 315. One end of the transmission rod 314 rotates synchronously with the first output end, the other end of the transmission rod 314 is hinged to one end of the connecting rod 315, and the other end of the connecting rod 315 is hinged to the second slider 312. The axis of the first output end is perpendicular to the moving direction of the first slider 311. Through the arrangement of the transmission rod 314 and the connecting rod 315, the first driving member 313 can realize the movement of the first slider 311 and the second slider 312 toward or away from each other, without the need to set up multiple power sources, and the number of transmission components is reduced, thereby improving the transmission rate. At the same time, the driving structure is simple, saving transmission time and the production cost of the device.

[0053] The first driving member 313 is a servo motor, which has a relatively simple structure and can more accurately control small-distance displacement.

[0054] like Figure 3 and Figure 4 As shown, a first mounting hole 3100 and a second mounting hole 3101 are provided on the support plate 310, and the first mounting hole 3100 and the second mounting hole 3101 extend in the horizontal direction. The first driving part 31 also includes a first spring 36 and a second spring 37. Two first springs 36 are provided in the first mounting hole 3100, and two second springs 37 are provided in the second mounting hole 3101. The two first springs 36 are respectively located on both sides of the first slider 311 in the moving direction of the first slider 311, one end of the first spring 36 abuts against the inner wall of the first mounting hole 3100, and the other end of the first spring 36 abuts against the first slider 311. The two second springs 37 are respectively located on both sides of the second slider 312 in the moving direction of the second slider 312, two ends of the second spring 37 abut against the inner wall of the second mounting hole 3101, and the other two ends of the second spring 37 abut against the second slider 312. The slider and the mounting hole are connected by a spring. When the sliders move relative to each other through the transmission assembly, the spring on one side of the slider will be compressed and the spring on the other side of the slider will be extended. When the transmission rod 314 rotates, the compression state of the spring will also change accordingly, thereby providing a reaction force for the slider to drive the slider to move repeatedly in the mounting hole, so as to cooperate with the transmission assembly to drive the first slider 311 and the second slider 312 to generate relative displacement, thereby improving the transmission effect of the transmission assembly.

[0055] The vertical dimensions of the first mounting hole 3100 match those of the first slider 311, while the vertical dimensions of the second mounting hole 3101 match those of the second slider 312. This prevents vertical displacement of the first and second sliders 311, 312 within their respective mounting holes, thereby preventing vertical relative displacement of the first and second grinding plates 32, 33. The first and second mounting holes 3100, 3101 respectively guide the first and second sliders 311, 312 horizontally, limiting relative movement of the first and second grinding plates 32, 33 to horizontally, ensuring that the second pulverizing assembly 30 can fully grind the material.

[0056] like Figure 2As shown, the pulverizing unit also includes a filter section, which is disposed within the crushing chamber 11 and located between the first crushing assembly 20 and the second crushing assembly 30. The filter section has a first filter hole 61 and a first end 62 and a second end 63, which are oppositely positioned along the material conveying direction. The first end 62 is higher than the second end 63. The second crushing assembly 30 is located below the second end 63. The filter section forms a material transport channel 40. A feed assembly 50 is located below the filter section and the second crushing assembly 30. The feed assembly 50 is capable of transporting material filtered by the first filter hole 61 and material crushed by the second crushing assembly 30. Integrating the filter section and the material transport channel 40 into the same component reduces the space occupied by the component within the crushing chamber 11, thereby improving space utilization within the crushing chamber 11. Furthermore, while transporting material, it can also filter material with a desired particle size, thereby improving the operating efficiency of the pulverizing unit and, consequently, the operating rate of the pulverizing device.

[0057] Specifically, the specific structure of the filter section is not limited. In this application, it is a flat plate structure. In other embodiments, the filter section can also be configured as a curved surface structure, with the opening of the curved surface facing the first crushing assembly 20. This can prevent material with unqualified pore size from directly falling onto the feed assembly 50 when a large amount of material is discharged from the filter section.

[0058] like Figure 5 As shown, the second grinding plate 33 is provided with a drop hole 320, and the first grinding plate 32 is provided with a second filter hole 330. The drop hole 320 and the second filter hole 330 are respectively connected to the grinding chamber 301. The diameter of the drop hole 320 is larger than the diameters of the first filter hole 61 and the second filter hole 330. The feed assembly 50 is located below the second filter hole 330. This ensures that the material crushed by the first pulverizing assembly 20 can all fall into the grinding chamber 301 through the drop hole 320, preventing excessive accumulation of material on the first grinding plate 32 and then falling onto the feed assembly 50 below to be transported out of the crushing device, thereby ensuring the qualified rate of the particle size discharged by the crushing device.

[0059] The shape, diameter, and number of the first filter holes 61, the feed holes 320, and the second filter holes 330 are not limited and can be selected based on actual working conditions. In this application, the first filter holes 61 and the second filter holes 330 are circular holes, while the feed holes 320 are square holes. The first filter holes 61, the feed holes 320, and the second filter holes 330 are evenly arranged on the first grinding plate 32, the material transport channel 40, and the second grinding plate 33, respectively.

[0060] like Figure 6As shown, the feed assembly 50 includes a second drive member 51 and a spiral conveyor roller 52. The second drive member 51 has a second output end. The spiral conveyor roller 52 is rotatably disposed within the crushing chamber 11. The spiral conveyor roller 52 rotates synchronously with the second output end, driving the material toward the discharge port 13. The spiral conveyor roller 52 extends in the same direction as the first grinding plate 32. This design is simple in structure, does not occupy excessive space within the crushing chamber 11, and can transport material that falls from the first and second crushing assemblies 20, 30 at any time, eliminating any time intervals for transportation and resulting in high transportation efficiency.

[0061] Among them, the discharge port 13 is provided with a mounting frame 131, and the other end of the spiral conveying roller 52 is rotatably connected to the mounting frame 131. The discharge port 13 is also provided with a discharge plate 132, which is arranged obliquely downward from the discharge port 13 and is used to guide the material to be discharged.

[0062] like Figure 4 As shown, the second crushing assembly 30 also includes a plurality of first crushing teeth 34 and a plurality of second crushing teeth 35. The plurality of first crushing teeth 34 are arranged at intervals on the first grinding plate 32, and the plurality of second crushing teeth 35 are arranged at intervals on the second grinding plate 33. The first crushing teeth 34 and the second crushing teeth 35 are arranged in an offset manner, and the first crushing teeth 34 and the second crushing teeth 35 cooperate with each other to crush the material. This arrangement can improve the effective crushing rate of the second crushing assembly 30, thereby improving the crushing effect of the material. Specifically, the plurality of first crushing teeth 34 are arranged on the portion of the first grinding plate 32 without the first filter hole 61, and the plurality of second crushing teeth 35 are arranged on the portion of the second grinding plate 33 without the second filter hole 330.

[0063] In this application, the structures of the first crushing teeth 34 and the second crushing teeth 35 are not limited. In this embodiment, the first crushing teeth 34 and the second crushing teeth 35 are conical teeth, which have a better crushing effect on the material. In other embodiments, square teeth, arc teeth, etc. can also be used.

[0064] like Figure 2As shown, the first crushing assembly 20 includes a first crushing roller 21 and a second crushing roller 22 arranged side by side in a horizontal direction. The first crushing roller 21 has multiple first protrusions spaced apart on its periphery, and the second crushing roller 22 has multiple second protrusions spaced apart on its periphery. The first crushing roller 21 and the second crushing roller 22 are rotatably disposed within the crushing chamber 11. The first and second protrusions cooperate to crush the material. This allows the material to be crushed by the first and second crushing rollers 21, 22 as it falls through the feed port 12, thereby increasing the material crushing rate. Furthermore, the first and second crushing rollers 21, 22 can guide the movement of the material, allowing most of the material to fall between the first and second crushing rollers 21, 22, thereby increasing the material's sliding rate on the material transport channel 40.

[0065] Specifically, the first crushing roller 21 and the second crushing roller 22 are respectively arranged on two rotating shafts, and two rotating gears 70 that are meshed with each other are provided at the ends of the two rotating shafts. Two motors are respectively driven and connected to the two rotating gears 70 to drive the two rotating gears 70 to mesh with each other, thereby driving the two first crushing rollers 21 and the second crushing rollers 22 to rotate.

[0066] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0067] Unless otherwise specifically stated, the relative arrangement of the parts and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to actual proportional relationships. The technology, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be considered as part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following figures, and therefore, once an item is defined in one figure, it does not need to be further discussed in subsequent figures.

[0068] In the description of the present invention, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention; the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0069] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0070] In addition, it should be noted that the use of words such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above words have no special meaning and therefore cannot be understood as limiting the scope of protection of this utility model.

[0071] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A crushing device, characterized in that: The crushing device comprises: A box body (10) has a crushing cavity (11), the box body (10) includes a feed port (12) and a discharge port (13), the feed port (12) and the discharge port (13) are both connected to the crushing cavity (11), the feed port (12) is located at the top of the crushing cavity (11), and the discharge port (13) is located at the bottom of the crushing cavity (11); A crushing portion, at least part of which is located in the crushing cavity (11), the crushing portion comprising a first crushing assembly (20) and a second crushing assembly (30), a material transport channel (40) being provided between the first crushing assembly (20) and the second crushing assembly (30), the first crushing assembly (20) being arranged close to the feed port (12), the second crushing assembly (30) having a grinding cavity (301), the grinding cavity (301) extending in a horizontal direction, the top of the grinding cavity (301) being capable of generating relative displacement in a horizontal direction relative to the bottom of the grinding cavity (301) so as to crush the material crushed by the first crushing assembly (20), the crushing precision of the second crushing assembly (30) being higher than the crushing precision of the first crushing assembly (20); A feeding assembly (50) is located between the crushing section and the discharge port (13), and the feeding assembly (50) can transport the material crushed by the crushing section to the discharge port (13).

2. The crushing device according to claim 1, characterized in that: The second pulverizing assembly (30) includes a first driving portion (31), a first grinding plate (32) and a second grinding plate (33), wherein the first grinding plate (32) forms the bottom of the grinding chamber (301), and the second grinding plate (33) forms the top of the grinding chamber (301), and the first driving portion (31) drives the first grinding plate (32) and the second grinding plate (33) to move toward or in opposite directions in a horizontal direction.

3. The crushing device according to claim 2, characterized in that: The first driving unit (31) includes: A support plate (310) is arranged outside the box (10); A first slider (311) and a second slider (312), wherein the first slider (311) and the second slider (312) are arranged on the support plate (310) at intervals in the horizontal direction, and the first slider (311) and the second slider (312) are respectively movably arranged on the support plate (310) in the horizontal direction, the first slider (311) is drivingly connected to the first grinding plate (32), and the second slider (312) is drivingly connected to the second grinding plate (33).

4. The crushing device according to claim 3, characterized in that: The first driving unit (31) further includes: A first driving member (313) is fixedly disposed on the first sliding block (311), and the first driving member (313) has a first output end; A transmission assembly comprises a transmission rod (314) and a connecting rod (315); one end of the transmission rod (314) rotates synchronously with the first output end; the other end of the transmission rod (314) is hinged to one end of the connecting rod (315); the other end of the connecting rod (315) is hinged to the second slider (312); and the axis of the first output end and the moving direction of the first slider (311) are perpendicular to each other.

5. The crushing device according to claim 3, characterized in that: The support plate (310) is provided with a first mounting hole (3100) and a second mounting hole (3101), the first mounting hole (3100) and the second mounting hole (3101) extending in a horizontal direction, the first driving portion (31) further comprising a first spring (36) and a second spring (37), the first mounting hole (3100) having two first springs (36) and the second mounting hole (3101) having two second springs (37), the two first springs (36) being arranged in a direction of movement of the first slider (311) The first spring (36) is respectively located on both sides of the first slider (311), one end of the first spring (36) is in contact with the inner wall of the first mounting hole (3100), and the other end of the first spring (36) is in contact with the first slider (311). The two second springs (37) are respectively located on both sides of the second slider (312) in the moving direction of the second slider (312), the two ends of the second springs (37) are in contact with the inner wall of the second mounting hole (3101), and the other two ends of the second springs (37) are in contact with the second slider (312).

6. The crushing device according to claim 2, characterized in that: The pulverizing section further comprises a filter section, which is arranged in the pulverizing chamber (11). The filter section is located between the first pulverizing assembly (20) and the second pulverizing assembly (30). The filter section has a first filter hole (61). The filter section has a first end (62) and a second end (63) that are relatively arranged along the material conveying direction. The height of the first end (62) is higher than the height of the second end (63). The second pulverizing assembly (30) is located below the second end (63). The filter section forms the material conveying channel (40). The feeding assembly (50) is located below the filter section and the second pulverizing assembly (30). The feeding assembly (50) is capable of conveying the material filtered by the first filter hole (61) and the material crushed by the second pulverizing assembly (30).

7. The crushing device according to claim 6, characterized in that: The second grinding plate (33) is provided with a feeding hole (320), and the first grinding plate (32) is provided with a second filter hole (330). The feeding hole (320) and the second filter hole (330) are respectively connected to the grinding chamber (301). The diameter of the feeding hole (320) is larger than the diameters of the first filter hole (61) and the second filter hole (330). The feeding assembly (50) is located below the second filter hole (330).

8. The crushing device according to claim 1, characterized in that: The feeding assembly (50) comprises: A second driving member (51) having a second output end; A spiral conveying roller (52) is rotatably arranged in the crushing cavity (11), and the spiral conveying roller (52) rotates synchronously with the second output end. The spiral conveying roller (52) drives the material to move toward the discharge port (13).

9. The crushing device according to claim 2, characterized in that: The second crushing assembly (30) further includes a plurality of first crushing teeth (34) and a plurality of second crushing teeth (35), wherein the plurality of first crushing teeth (34) are arranged at intervals on the first grinding plate (32), and the plurality of second crushing teeth (35) are arranged at intervals on the second grinding plate (33), and the first crushing teeth (34) and the second crushing teeth (35) are arranged in a staggered manner, and the first crushing teeth (34) and the second crushing teeth (35) cooperate with each other to crush materials.

10. The crushing device according to claim 1, characterized in that: The first crushing assembly (20) includes a first crushing roller (21) and a second crushing roller (22) arranged side by side in a horizontal direction, a plurality of first protrusions are arranged at intervals on the periphery of the first crushing roller (21), and a plurality of second protrusions are arranged at intervals on the periphery of the second crushing roller (22), the first crushing roller (21) and the second crushing roller (22) are rotatably arranged in the crushing cavity (11), and the first protrusions cooperate with the second protrusions to crush the material.

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