A raw material crushing device for aluminum nitride production

Abstract

The present invention relates to the technical field of crushing processing, and specifically to a raw material crushing device for aluminum nitride production, including a shell, a power mechanism and two crushing rollers; a fixed platform and a movable platform are arranged outside the shell, the fixed platform is fixed to the shell, and the movable platform is located above the fixed platform and connected to the fixed platform through an elastic member; the power mechanism includes a power member and a transmission rod; the transmission rod is arranged horizontally and the end of the transmission rod is supported by the movable platform; the power member drives the transmission rod to rotate; each crushing roller is sleeved outside a transmission rod and supported by the transmission rod, and the distance between the two transmission rods is smaller than the diameter of the crushing roller. The two crushing rollers abut and squeeze the material under the action of their own gravity. When encountering a hard object that is difficult to crush, the hard object will push the two crushing rollers to rotate so that the upper parts of the two crushing rollers are close to each other and the lower parts are far away from each other, thereby reducing the storage area defined above the two crushing rollers, thereby reducing the amount of uncrushed material that falls when the hard object passes through the two crushing rollers.

Description

Technical Field

[0001] The invention relates to the technical field of crushing processing, and in particular to a raw material crushing device for aluminum nitride production. Background Art

[0002] Aluminum nitride is an important ceramic material, which is usually prepared by high-temperature nitridation, where aluminum powder reacts with nitrogen at high temperature. When processing aluminum ore raw materials or grinding existing aluminum blocks, a crushing device is required to crush the raw materials. The toothed roller crusher uses two rollers rotating in opposite directions to squeeze and crush the raw materials. In order to avoid damage to the rollers by raw materials with high hardness that are difficult to crush, the rollers are usually allowed to have a certain elastic margin to move away from each other. The two rollers move away from each other to allow raw materials with high hardness to pass through, but at the same time, more raw materials that have not been crushed will fall as the two rollers move away from each other, affecting the crushing effect of the raw materials. Summary of the invention

[0003] The invention provides a raw material crushing device for aluminum nitride production, so as to solve the problem that a large amount of uncrushed raw materials are dropped when the existing crushing device passes through hard objects.

[0004] The raw material crushing device for aluminum nitride production of the present invention adopts the following technical scheme:

[0005] A raw material crushing device for aluminum nitride production comprises a shell, a power mechanism and a crushing mechanism; a fixed platform and a movable platform are arranged outside the shell, the fixed platform is fixed to the shell, the movable platform is located above the fixed platform and connected to the fixed platform through an elastic member, and the movable platform can slide up and down relative to the shell; there are two groups of the fixed platform, the movable platform and the elastic member, which are respectively arranged on both sides of the shell in the horizontal direction; there are two power mechanisms, each comprising a power member and a transmission rod; the transmission rod is arranged horizontally and its two ends are respectively supported on two movable platforms; the power member is installed on the movable platform for driving the transmission rod to rotate; the power member and the transmission rod can be synchronously slidably installed on the movable platform in a horizontal direction perpendicular to the transmission rod; two side walls of the shell on which the fixed platform is installed are respectively provided with Two symmetrically arranged inclined grooves, the upper ends of the two inclined grooves on the same side wall are close to each other, and the lower ends are far away from each other; the transmission rods of the two power mechanisms are arranged in parallel, and the two ends of the transmission rod of each power mechanism respectively pass through the two inclined grooves with the same inclination direction on the two side walls, so that the two transmission rods can slide along their respective inclined grooves when they move downward, thereby making the two transmission rods move away from each other; the crushing mechanism includes two crushing rollers, each crushing roller is sleeved outside a transmission rod and supported by the transmission rod, the distance between the two transmission rods is smaller than the diameter of the crushing rollers, so that the two crushing rollers are close to and abut against each other under the action of their own gravity; the two transmission rods respectively drive the two crushing rollers to rotate, and squeeze and crush the materials between the two crushing rollers.

[0006] Optionally, the transmission rod is meshed with the inner ring of the crushing roller for transmission via gears.

[0007] Optionally, at least two cleaning blocks are further arranged in the shell, each cleaning block corresponds to a crushing roller, and is used to clean the materials adhered to the crushing roller.

[0008] Optionally, the cleaning block is arranged on the lower side of the crushing roller and away from the other crushing roller, and the side of the cleaning block close to the crushing roller is an arc surface.

[0009] Optionally, the outer shell includes a feeding part, a crushing part and a collecting part which are arranged in sequence from top to bottom, the fixed platform is installed outside the crushing part, the inclined groove is opened on the side wall of the crushing part, and the two transmission rods are both arranged in the crushing part; the feeding part is used to guide the material into the crushing part, and the collecting part is used to collect the crushed material.

[0010] Optionally, two sliding seats are provided on each movable platform, and the sliding seats are slidably installed on the movable platform along a horizontal direction perpendicular to the transmission rod, and both ends of each transmission rod are rotatably installed on the sliding seats on the two movable platforms.

[0011] Optionally, the power component is a motor.

[0012] Optionally, the elastic member is a disc spring.

[0013] Optionally, a flexible plug is provided between each crushing roller and the side wall of the shell, and the flexible plug prevents the material from passing through the gap between the crushing roller and the shell.

[0014] Optionally, a plurality of reinforcing rib plates are connected between the lower side of the fixing platform and the side wall of the shell.

[0015] The beneficial effects of the present invention are as follows: the two crushing rollers of the raw material crushing device for aluminum nitride production of the present invention abut and squeeze the material under the action of their own gravity, the position of the crushing roller is floating, and the extrusion force between the two crushing rollers can be adjusted by adjusting the spacing between the two transmission rods, thereby adjusting the crushing force of the material. When encountering a hard object that is difficult to crush, the hard object will push the two crushing rollers away from each other, so that the upper parts of the two crushing rollers are close to each other and the lower parts are away from each other, thereby reducing the storage area defined above the two crushing rollers, thereby reducing the amount of uncrushed material that falls when the hard object passes through the two crushing rollers.

[0016] Furthermore, as the amount of material accumulated above the crushing roller increases, the load of the crushing roller increases, and the two crushing rollers tend to move closer together under the action of their own weight and the load above them, increasing the squeezing force of the two crushing rollers on the material. At the same time, the crushing roller will drive the transmission rod to move downward due to the increase in load, and the transmission rods of the two power mechanisms will move away from each other along the corresponding inclined grooves, increasing the distance between the two transmission rods, and reducing the squeezing force of the two crushing rollers approaching each other under the action of their own weight and the load above them, so as to offset or reduce the increase in squeezing force caused by the increase in material, so that the two crushing rollers maintain the most balanced squeezing crushing force on the material. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention 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 present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0018] Figure 1 It is a schematic diagram of the overall structure of an embodiment of a raw material crushing device for aluminum nitride production of the present invention;

[0019] Figure 2 A side view of the overall structure of an embodiment of a raw material crushing device for aluminum nitride production according to the present invention;

[0020] Figure 3 for Figure 2 Schematic diagram of the section along the AA direction;

[0021] Figure 4 It is a front view of a housing of an embodiment of a raw material crushing device for aluminum nitride production of the present invention;

[0022] Figure 5 It is a schematic diagram of another state of a crushing roller in an embodiment of a raw material crushing device for aluminum nitride production of the present invention;

[0023] In the figure: 100, shell; 110, fixed platform; 111, reinforcing rib plate; 120, movable platform; 121, sliding seat; 130, elastic member; 140, chute; 150, feeding part; 160, crushing part; 170, collecting part; 180, flexible plug; 200, power mechanism; 210, power member; 220, transmission rod; 310, crushing roller; 400, cleaning block. DETAILED DESCRIPTION

[0024] 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 described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] An embodiment of a raw material crushing device for aluminum nitride production of the present invention is as follows Figures 1 to 5 As shown, it includes a housing 100, a power mechanism 200 and a crushing mechanism.

[0026] A fixed platform 110 and a movable platform 120 are arranged outside the housing 100. The fixed platform 110 is fixed to the housing 100. Specifically, a plurality of reinforcing ribs 111 are connected between the lower side of the fixed platform 110 and the side wall of the housing 100. The movable platform 120 is located above the fixed platform 110 and is connected to the fixed platform 110 through an elastic member 130, wherein the elastic member 130 is a disc spring. The movable platform 120 can slide up and down relative to the housing 100. Specifically, the movable platform 120 and the housing 100 can be matched through a vertically extending keyway, for example, a slide groove is provided on the side wall of the housing 100, a matching key is provided on the movable platform 120 to match the slide groove, or the movable platform 120 is made to slide with the slide groove as a whole and contact the side wall surface of the slide groove, so as to limit the movable platform 120 to only slide up and down relative to the housing 100. There are two groups of the fixed platform 110 , the movable platform 120 and the elastic member 130 , which are respectively disposed on two sides of the housing 100 in the horizontal direction; and the two fixed platforms 110 are located at the same height.

[0027] There are two power mechanisms 200, each including a power piece 210 and a transmission rod 220; the transmission rod 220 is horizontally arranged and its two ends are respectively supported by two movable platforms 120; the power piece 210 is installed on the movable platform 120 to drive the transmission rod 220 to rotate; the power piece 210 and the transmission rod 220 can be synchronously slidably installed on the movable platform 120 along a horizontal direction perpendicular to the transmission rod 220. Two symmetrically arranged inclined grooves 140 are respectively provided on the two side walls of the fixed platform 110 installed on the housing 100, and the upper ends of the two inclined grooves 140 on the same side wall are close to each other, and the lower ends are far away from each other; the transmission rods 220 of the two power mechanisms 200 are arranged in parallel, and the two ends of the transmission rod 220 of each power mechanism 200 respectively pass through the two inclined grooves 140 on the two side walls with the same inclination direction, and the two transmission rods 220 can slide along their respective inclined grooves 140 when moving downward, thereby making the two transmission rods 220 far away from each other.

[0028] The crushing mechanism includes two crushing rollers 310, each crushing roller 310 is sleeved outside a transmission rod 220 and supported by the transmission rod 220, and the distance between the two transmission rods 220 is smaller than the diameter of the crushing roller 310, so that the two crushing rollers 310 are close to each other and abut against each other under the action of their own gravity. The two transmission rods 220 respectively drive the two crushing rollers 310 to rotate, squeezing and crushing the materials between the two crushing rollers 310. The crushing roller 310 is a rigid part with a large deadweight. Since the distance between the two transmission rods 220 is smaller than the diameter of the crushing roller 310, the crushing roller 310 will tend to rotate under its own gravity when it is sleeved outside the transmission rod 220 and supported on the transmission rod 220, so that the two crushing rollers 310 abut against each other, and the abutting side has a large extrusion force. The upper part between the two crushing rollers 310 will define a storage area for accommodating materials. After the materials enter the storage area above the two crushing rollers 310, the two crushing rollers 310 rotate in opposite directions with their corresponding transmission rods 220. The side of the two crushing rollers 310 close to each other rotates from top to bottom, guiding the materials between the two to flow downward and extruding and crushing them. The crushing roller 310 can be a toothed roller or a spiral roller.

[0029] The two crushing rollers 310 abut against and squeeze the material under the action of their own gravity. The position of the crushing rollers 310 is floating, and the squeezing force between the two crushing rollers 310 can be adjusted by adjusting the distance between the two transmission rods 220, thereby adjusting the crushing force of the material. When encountering a hard object that is difficult to crush, the hard object will push the two crushing rollers 310 away from each other, so that the upper parts of the two crushing rollers 310 are close to each other and the lower parts are away from each other, thereby reducing the storage area defined above the two crushing rollers 310, thereby reducing the amount of uncrushed material that falls when the hard object passes through the two crushing rollers 310.

[0030] Furthermore, as the amount of material accumulated above the crushing roller 310 increases, the load of the crushing roller 310 increases, and the two crushing rollers 310 tend to move closer together under their own weight and the load above them, so that the extrusion force of the two crushing rollers 310 on the material increases. At the same time, the crushing roller 310 will drive the transmission rod 220 to move downward due to the increase in load, and the transmission rods 220 of the two power mechanisms 200 will move away from each other along the corresponding inclined slots 140, so that the distance between the two transmission rods 220 increases, and the extrusion force of the two crushing rollers 310 approaching each other under the action of their own weight and the load above them decreases, so as to offset or reduce the increase in extrusion force caused by the increase in material, so that the two crushing rollers 310 maintain as balanced extrusion crushing force on the material as possible.

[0031] In this embodiment, the transmission rod 220 and the inner ring of the crushing roller 310 are meshed and driven by gears, that is, the transmission rod 220 is a gear rod, and a gear ring is provided on the inner ring of the crushing roller 310. The power member 210 is a motor.

[0032] In this embodiment, at least two cleaning blocks 400 are further arranged in the housing 100, each of which corresponds to a crushing roller 310 and is used to clean the materials adhered to the crushing roller 310. Specifically, the cleaning block 400 is arranged on the lower side of the crushing roller 310 and away from the other crushing roller 310, and the side of the cleaning block 400 close to the crushing roller 310 is an arc surface. A certain gap is reserved between the arc surface of the cleaning block 400 and the crushing roller 310 so as not to affect the rotation of the crushing roller 310; preferably, some brushes or scrapers made of flexible materials (such as rubber) can be installed on the arc surface of the cleaning block 400 to clean the outer surface of the crushing roller 310.

[0033] In this embodiment, the housing 100 includes a feeding portion 150, a crushing portion 160 and a collecting portion 170 which are arranged in sequence from top to bottom, the fixing platform 110 is installed outside the crushing portion 160, the chute 140 is opened on the side wall of the crushing portion 160, and two transmission rods 220 are both arranged in the crushing portion 160; the feeding portion 150 is funnel-shaped, used to guide the material into the crushing portion 160, and the collecting portion 170 is used to collect the crushed material; specifically, the collecting portion 170 is hollow inside and can be used to install a transmission belt to bring out the crushed material.

[0034] In this embodiment, two sliding seats 121 are provided on each movable platform 120, and the sliding seats 121 are slidably mounted on the movable platform 120 along a horizontal direction perpendicular to the transmission rod 220, and both ends of each transmission rod 220 are rotatably mounted on the sliding seats 121 on the two movable platforms 120. Specifically, a sliding groove horizontally and perpendicular to the transmission rod 220 can be provided on the movable platform 120, and the sliding seats 121 are slidably matched with the sliding groove, and the moving direction of the movable platform 120 is limited by the sliding groove; and the output shaft of the power member 210 is connected to the transmission rod 220 in the sliding seat 121.

[0035] In this embodiment, a flexible plug 180 is provided between each crushing roller 310 and the side wall of the housing 100, and the flexible plug 180 prevents the material from passing through the gap between the crushing roller 310 and the housing 100. The deformation coefficient of the flexible plug 180 is small, and the increased squeezing force on the crushing roller 310 when it is squeezed can be ignored.

[0036] When the raw material crushing device for aluminum nitride production of the present invention is in use, the two crushing rollers 310 are respectively sleeved outside the two transmission rods 220 and bear on the transmission rods 220, and the two crushing rollers 310 are close to and abut against each other under the action of their own gravity; the material falls from the feed part 150 to the storage area above the crushing rollers 310, and the two power parts 210 respectively drive the two transmission rods 220 to rotate in opposite directions, and the transmission rods 220 drive the two crushing rollers 310 to rotate in opposite directions through gear transmission, and the two crushing rollers 310 rotate to squeeze the material while guiding the material to be discharged downward from between the two crushing rollers 310. When encountering a hard object that is difficult to crush, the hard object will push the two crushing rollers 310 away from each other, causing the two crushing rollers 310 to rotate around their respective transmission rods 220, and the upper parts of the two crushing rollers 310 approach each other, while the lower parts move away from each other, thereby reducing the storage area defined above the two crushing rollers 310, thereby reducing the amount of uncrushed material that falls when the hard object passes through the two crushing rollers 310.

[0037] When there are more materials piled on the crushing roller 310, the load of the crushing roller 310 increases, and the two crushing rollers 310 tend to get closer to each other under their own weight and the load above them, so that the extrusion force of the two crushing rollers 310 on the materials increases. At the same time, the crushing roller 310 will drive the transmission rod 220 to move downward due to the increase in load, and the transmission rods 220 of the two power mechanisms 200 will move away from each other along the corresponding inclined grooves 140, so that the distance between the two transmission rods 220 increases, and the extrusion force of the two crushing rollers 310 approaching each other under the action of their own weight and the load above them is reduced, so as to offset or reduce the increase in extrusion force caused by the increase in materials, so that the two crushing rollers 310 maintain the most balanced extrusion crushing force on the materials.

[0038] As the material accumulated on the crushing roller 310 decreases, the load of the crushing roller 310 decreases, and the two crushing rollers 310 approach each other under the action of their own gravity and the load above them, and the squeezing force on the material decreases. The gravity of the crushing roller 310 acting on the movable platform 120 through the transmission rod 220 decreases, and the movable platform 120 moves upward under the action of the elastic member 130. The two transmission rods 220 move along the corresponding inclined grooves 140 while moving upward and then approach each other, thereby increasing the squeezing force between the two crushing rollers 310 to compensate for the reduction in squeezing force caused by the reduction of the material, so that the two crushing rollers 310 maintain the most balanced squeezing crushing force on the material.

[0039] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A raw material crushing device for aluminum nitride production, characterized in that: It includes a shell, a power mechanism and a crushing mechanism; A fixed platform and a movable platform are arranged outside the shell, the fixed platform is fixed to the shell, the movable platform is located above the fixed platform and connected to the fixed platform through an elastic member, and the movable platform can slide up and down relative to the shell; there are two groups of the fixed platform, the movable platform and the elastic member, which are respectively arranged on both sides of the shell in the horizontal direction; There are two power mechanisms, each including a power piece and a transmission rod; the transmission rod is horizontally arranged and its two ends are respectively supported by two movable platforms; the power piece is installed on the movable platform for driving the transmission rod to rotate; the power piece and the transmission rod can be synchronously slidably installed on the movable platform along a horizontal direction perpendicular to the transmission rod; two symmetrically arranged oblique grooves are respectively provided on the two side walls of the fixed platform installed on the outer shell, and the upper ends of the two oblique grooves on the same side wall are close to each other, and the lower ends are far away from each other; the transmission rods of the two power mechanisms are arranged in parallel, and the two ends of the transmission rod of each power mechanism respectively pass through the two oblique grooves on the two side walls with the same inclination direction, so that the two transmission rods can slide along their respective oblique grooves when they move downward, thereby making the two transmission rods far away from each other; The crushing mechanism includes two crushing rollers, each crushing roller is sleeved outside a transmission rod and supported by the transmission rod. The distance between the two transmission rods is smaller than the diameter of the crushing rollers, so that the two crushing rollers are close to each other and abut against each other under the action of their own gravity; the two transmission rods drive the two crushing rollers to rotate respectively, squeezing and crushing the materials between the two crushing rollers; The transmission rod is meshed with the inner ring of the crushing roller for transmission.

2. The raw material crushing device for aluminum nitride production according to claim 1, characterized in that: At least two cleaning blocks are also arranged in the shell, each cleaning block corresponds to a crushing roller and is used for cleaning the materials adhered to the crushing roller.

3. The raw material crushing device for aluminum nitride production according to claim 2, characterized in that: The cleaning block is arranged on the lower side of the crushing roller and away from the other crushing roller, and the side of the cleaning block close to the crushing roller is an arc surface.

4. The raw material crushing device for aluminum nitride production according to claim 1, characterized in that: The outer shell includes a feeding part, a crushing part and a collecting part which are arranged in sequence from top to bottom. The fixed platform is installed outside the crushing part. The inclined slot is opened on the side wall of the crushing part. Two transmission rods are both arranged in the crushing part. The feeding part is used to guide the material into the crushing part, and the collecting part is used to collect the crushed material.

5. The raw material crushing device for aluminum nitride production according to claim 1, characterized in that: Two sliding seats are arranged on each movable platform. The sliding seats are slidably mounted on the movable platform along a horizontal direction perpendicular to the transmission rod. Both ends of each transmission rod are rotatably mounted on the sliding seats on the two movable platforms.

6. The raw material crushing device for aluminum nitride production according to claim 1, characterized in that: The power part is an electric motor.

7. The raw material crushing device for aluminum nitride production according to claim 1, characterized in that: The elastic member is a disc spring.

8. The raw material crushing device for aluminum nitride production according to claim 1, characterized in that: A flexible plug is provided between each crushing roller and the side wall of the shell, and the flexible plug prevents the material from passing through the gap between the crushing roller and the shell.

9. The raw material crushing device for aluminum nitride production according to claim 1, characterized in that: A plurality of reinforcing rib plates are connected between the lower side of the fixing platform and the side wall of the shell.

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