CN116550412A - Automatic grinder of carborundum miropowder - Google Patents

Abstract

The invention discloses an automatic grinding device for silicon carbide micropowder, which includes a grinding cylinder, the top of the grinding cylinder is designed to be closed, and the bottom of the grinding cylinder is provided with a discharge port, and the bottom wall of the grinding cylinder is in the shape of an inverted cone. A first motor is fixed in the middle of the upper surface of the grinding cylinder, and a drive shaft is fixed at the driving end of the first motor. In the present invention, a grinding cylinder, a first motor, a drive shaft, a grinding structure, a heating and feeding structure and a screening structure are provided, and the grinding structure can be driven to rotate inside the grinding cylinder through the first motor to realize the grinding of silicon carbide. The silicon carbide powder can be screened through the sieving structure, so that the powder with unqualified particle size stays on the surface of the sieving structure. Before that, the silicon carbide fragments can be heated and dried by setting the heating and feeding structure horizontally to avoid grinding. The powder sticks to the inner wall of the grinding cylinder and prevents the wet powder from being difficult to sieve, thereby improving the processing efficiency of silicon carbide powder.

Description

An automatic grinding device for silicon carbide micropowder

technical field

The invention relates to the technical field of silicon carbide processing, in particular to an automatic grinding device for silicon carbide micropowder.

Background technique

Silicon carbide is smelted from quartz sand, petroleum coke, wood chips and other raw materials through resistance furnace at high temperature. Silicon carbide also exists in nature as a rare mineral, moissanite. Silicon carbide is also called moissanite. Among the non-oxide high-tech refractory materials such as C, N, B, etc., silicon carbide is the most widely used and economical one, which can be called corundum or refractory sand.

At present, the extraction of silicon carbide powder needs to go through a series of processes such as grinding, stirring, and filtering. The most critical step is to grind silicon carbide, and the grinding of silicon carbide requires a micropowder grinding device. When this type of grinding device is used, the carbonized Silicon fragments are added to the top of the grinding cylinder, and the silicon carbide is squeezed and ground by the fast-rotating grinding rollers. However, during this process, silicon carbide is easy to fly out of the top of the grinding cylinder, which not only causes waste of raw materials, but also poses safety risks. Secondly, the existing grinding device can only realize the grinding operation, and cannot sieve the silicon carbide, resulting in uneven particle size of the ground powder, which needs to be sieved by a sieving device before re-grinding the unqualified powder , Delay production efficiency. If silicon carbide contains moisture, it will stick to the grinding roller or the inner wall of the grinding device during the grinding process, which will affect the subsequent grinding. Therefore, the present invention proposes an automatic grinding device for silicon carbide micropowder.

Contents of the invention

(1) Solved technical problems

Aiming at the deficiencies of the prior art, the present invention provides an automatic grinding device for silicon carbide micropowder, which solves the shortcomings of the current silicon carbide powder grinding and sticking to the inner wall of the device and insufficient grinding.

(2) Technical solution

In order to achieve the above object, the present invention is achieved through the following technical solutions: a silicon carbide micropowder automatic grinding device, comprising a grinding cylinder, the top of the grinding cylinder is a closed design, and the bottom end of the grinding cylinder is provided with a discharge port, the grinding cylinder The bottom wall of the cylinder is in the shape of an inverted cone, the middle part of the upper surface of the grinding cylinder is fixed with a first motor, the drive end of the first motor is fixed with a drive shaft, and the bottom end of the drive shaft passes through the top wall of the grinding cylinder and is fixedly connected with a grinding structure , and the drive shaft is connected to the top wall of the grinding cylinder through bearings. A connecting rod is fixed in the middle of the bottom end of the grinding structure. The lower surface of the slider is fixedly connected with a movable rod, and the bottom end of the movable rod is fixedly connected with a screening structure, and the top side of the grinding cylinder is fixed with a heating and feeding structure for conveying silicon carbide fragments, and the grinding cylinder is far away from the heating upper A withdrawal structure is fixed on one side of the material structure.

Preferably, the heating and feeding structure includes a horizontally arranged feeding pipe, the feeding port on the side away from the grinding cylinder is fixedly connected with a hopper, and the feeding port at the end of the feeding pipe close to the grinding cylinder is fixedly connected with a The feeding pipe, and the bottom end of the feeding pipe is fixedly connected with the top wall of the grinding cylinder, the inside of the feeding pipe is connected with an auger, the outer wall of the feeding pipe is fixed with a second motor, and the central axis of the auger passes through the feeding The tube side wall is fixedly connected with the driving end of the second motor. After the auger is driven by the second motor to rotate, the silicon carbide fragments that enter the feeding pipe from the hopper can be transported to the feeding pipe, and then enter the grinding cylinder through the discharging pipe, at this time, the silicon carbide fragments are ground inside the grinding cylinder When the silicon carbide fragments will not splash out.

Preferably, an arc-shaped electric heating plate is fixed on the inner wall of the feeding pipe. The silicon carbide fragments can be dried by the electric heating plate to avoid moisture in the powder after the silicon carbide is crushed.

Preferably, the grinding structure includes a conical grinding block fixedly connected to the bottom end of the drive shaft, and a plurality of steps are provided on the side wall of the bottom end of the conical grinding block. Different steps can crush silicon carbide into particles of different sizes, and the bottom step can grind silicon carbide into the finest powder.

Preferably, a plurality of dispersing plates are fixed on the upper surface of the conical grinding block. When the silicon carbide falls on the surface of the conical grinding block, as the conical grinding block rotates, the silicon carbide can be slapped and dispersed to the inner wall of the grinding cylinder.

Preferably, the screening structure includes a circular frame, the inner wall of the circular frame is fixed with a plurality of crossbars, and the ends of the plurality of crossbars away from the inner wall of the circular frame are fixedly connected with a round table, and the bottom end of the movable rod is connected to the The round platform is fixedly connected by bolts, and a screen is fixed inside the circular frame and above the cross bar. The ground silicon carbide powder can be sieved through the sieve, and the powder with unqualified particle size will stay on the surface of the sieve.

Preferably, the outer wall of the circular frame is provided with an annular groove, and a sealing ring is clamped inside the annular groove, and the sealing ring is attached to the inner wall of the grinding cylinder. The sealing ring can increase the sealing between the circular frame and the inner wall of the grinding cylinder. The ground silicon carbide powder can only pass through the sieve.

Preferably, both the movable groove and the slider are of a square structure, the upper surface of the slider and the inner top wall of the movable groove are jointly fixedly connected with a spring, and the lower surface of the circular frame is fixed with a plurality of first protrusions equidistantly, A plurality of support plates are fixed on the inner side wall of the grinding cylinder and under the circular frame, and a second bump corresponding to the first bump is fixed on the surface of each support plate. The torque can be transmitted through the slider and the movable groove, so that the screening structure can follow the rotation of the grinding structure through the connecting rod and the movable rod. When the screening structure is rotated, under the cooperation of the first protrusion and the second protrusion, the screening structure will continuously jump, thereby improving the screening efficiency.

Preferably, the suction structure includes a suction pump fixed on the outer wall of the grinding cylinder, the inlet of the suction pump is fixedly connected with a suction pipe, and the end of the suction pipe away from the suction pump extends through the side wall of the grinding cylinder Above the screening structure, the outlet of the suction pump is fixedly connected with a return pipe, and the end of the return pipe away from the suction pump extends through the top wall of the grinding cylinder to above the grinding structure. The silicon carbide particles that do not meet the standard on the surface of the screen can be drawn out through the withdrawal structure, and then returned to the top of the grinding structure through the return pipe for re-grinding.

Working principle: firstly add silicon carbide fragments from the hopper, then start the second motor to drive the auger to rotate, the auger conveys the fragments to the feeding pipe, and finally enters the grinding cylinder through the feeding pipe to convey the silicon carbide fragments Start the electric heating plate during the process, use the electric heating plate to heat the silicon carbide fragments, remove the moisture in the silicon carbide fragments, after the silicon carbide fragments enter the grinding cylinder, the first motor will drive the conical grinding block to rotate, And the dispersing plate can beat and disperse the silicon carbide fragments. During the rotation of the conical grinding block 41, the silicon carbide fragments will be squeezed and crushed, and the crushed powder will fall on the surface of the screen, and the screen will follow the conical grinding block. Synchronous rotation, after the screen rotates, because the first bumps will alternately pass over the second bumps, and cooperate with the spring at the bottom of the connecting rod, the circular frame and the screen will continuously jump, thereby improving the screening efficiency and screening out tiny particles. The particles are discharged from the discharge port. During the grinding process, the feeding can be properly stopped, and then the suction pump can be started to cooperate with the rotation of the screen, and the silicon carbide particles on the surface of the screen can be sucked out through the suction pipe, and then returned to the top of the grinding cylinder through the return pipe, and then these particles Silicon carbide fragments that do not meet the required size are reground.

(3) Beneficial effects

The invention provides an automatic grinding device and method for silicon carbide micropowder. Has the following beneficial effects:

1. When the present invention is in use, by setting the grinding cylinder, the first motor, the drive shaft, the grinding structure, the heating and feeding structure and the screening structure, the grinding structure can be driven to rotate inside the grinding cylinder by the first motor, so as to realize the grinding of silicon carbide Grinding, the ground silicon carbide powder can be screened through the sieving structure, so that the powder with unqualified particle size stays on the surface of the sieving structure. Before that, the silicon carbide fragments can be heated by setting the heating feeding structure horizontally Drying prevents the ground powder from sticking to the inner wall of the grinding cylinder and prevents wet powder from being difficult to sieve, thereby improving the processing efficiency of silicon carbide powder.

2. When the present invention is in use, by setting the back-pumping structure, the back-pumping structure includes a suction pump, a suction pipe and a return pipe, and the unqualified silicon carbide particles staying on the surface of the screening structure can be drawn out and then re-used through the return pipe. Add it to the top of the grinding cylinder for re-grinding to improve the qualified rate of silicon carbide grinding.

Description of drawings

Fig. 1 is the overall schematic diagram of the present invention;

Fig. 2 is the three-dimensional view of screening structure of the present invention;

Figure 3 is an enlarged view of A in Figure 1;

Figure 4 is an enlarged view at B in Figure 1;

Fig. 5 is a sectional view of the heating and feeding structure of the present invention.

Among them, 1. grinding cylinder; 2. first motor; 3. drive shaft; 4. grinding structure; 41. conical grinding block; 42. steps; 43. dispersion plate; 5. heating and feeding structure; 51. feeding pipe 52, feeding hopper; 53, feeding pipe; 54, auger; 55, second motor; 56, electric heating plate; 6, back pumping structure; 61, suction pump; 62, suction pipe; 63, back Material pipe; 7, connecting rod; 8, movable groove; 9, slider; 10, movable rod; 11, spring; 12, screening structure; 121, circular frame; 122, cross bar; 123, round platform; 124, Screen mesh; 125, annular groove; 126, sealing ring; 127, first bump; 13, support plate; 14, second bump; 15, discharge port.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Example:

As shown in Figures 1 to 5, the embodiment of the present invention provides an automatic grinding device for silicon carbide micropowder, which includes a grinding cylinder 1, the top of the grinding cylinder 1 is designed to be closed, and the bottom of the grinding cylinder 1 is provided with a discharge port 15, The bottom wall of the grinding cylinder 1 is in the shape of an inverted cone, the middle part of the upper surface of the grinding cylinder 1 is fixed with a first motor 2, the driving end of the first motor 2 is fixed with a driving shaft 3, and the bottom end of the driving shaft 3 passes through the top wall of the grinding cylinder 1 and is fixedly connected with a Grinding structure 4, and drive shaft 3 is connected with the top wall of grinding cylinder 1 through bearing rotation, and the middle part of the bottom end of grinding structure 4 is fixed with connecting rod 7, and the bottom end of connecting rod 7 is provided with movable groove 8, and the inside of movable groove 8 is slidingly connected with sliding The block 9 and the lower surface of the slider 9 are fixedly connected with a movable rod 10, the bottom end of the movable rod 10 is fixedly connected with a screening structure 12, and the top side of the grinding cylinder 1 is fixed with a heating and feeding structure 5 for conveying silicon carbide fragments. 1 A withdrawal structure 6 is fixed on the side away from the heating and feeding structure 5 .

As shown in Fig. 1 and Fig. 5, the heating and feeding structure 5 includes a horizontally arranged feeding pipe 51, the feeding port of the feeding pipe 51 away from the side of the grinding cylinder 1 is fixedly connected with a feeding hopper 52, and the feeding pipe 51 is close to the end of the grinding cylinder 1 The discharge port is fixedly connected with a feeding pipe 53, and the bottom end of the feeding pipe 53 is fixedly connected with the top wall of the grinding cylinder 1, the inside of the feeding pipe 51 is connected with an auger 54 for rotation, and the outer wall of the feeding pipe 51 is fixed with a second motor 55 The central axis of the auger 54 passes through the side wall of the feeding pipe 51 and is fixedly connected to the driving end of the second motor 55 . An arc-shaped electric heating plate 56 is fixed on the inner wall of the feed pipe 51 . The electric heating plate 56 can heat the silicon carbide particles inside the feed pipe 51, thereby removing the moisture in the silicon carbide particles. As the second motor 55 drives the auger 54 to rotate, the auger 54 can remove the fragments added by the hopper 52. It is transported to the feeding pipe 53, and then enters the inside of the grinding cylinder 1 through the feeding pipe 53.

As shown in FIG. 1 , the grinding structure 4 includes a conical grinding block 41 fixedly connected to the bottom end of the driving shaft 3 , and a plurality of steps 42 are provided on the side wall of the bottom end of the conical grinding block 41 . The steps 42 at the bottom of the conical grinding block 41 are set from small to large, and the gap between the steps 42 and the inner wall of the grinding cylinder 1 gradually narrows, so that the silicon carbide fragments can be gradually ground. A plurality of dispersing plates 43 are fixed on the upper surface of the conical grinding block 41 . When the conical grinding block 41 rotates, the dispersing plate 43 can beat and disperse the falling silicon carbide particles, so that the silicon carbide fragments evenly scatter to the side of the conical grinding block 41 .

As shown in Figures 1 and 2, the screening structure 12 includes a circular frame 121, the inner wall of the circular frame 121 is fixed with a plurality of crossbars 122, and the end of the plurality of crossbars 122 away from the inner wall of the circular frame 121 is fixedly connected with a circular platform 123. , and the bottom end of the movable rod 10 is fixedly connected with the round platform 123 by bolts, and a screen 124 is fixed inside the circular frame 121 and above the cross bar 122 . The outer wall of the circular frame 121 is provided with an annular groove 125 , and a sealing ring 126 is clamped inside the annular groove 125 , and the sealing ring 126 is attached to the inner wall of the grinding cylinder 1 . The sealing ring 126 can increase the sealing between the circular frame 121 and the inner wall of the grinding cylinder 1 , and the ground silicon carbide powder can be screened through the screen 124 .

As shown in Figures 1-4, the movable groove 8 and the slider 9 are square structures, the upper surface of the slider 9 and the inner top wall of the movable groove 8 are jointly fixedly connected with a spring 11, and the lower surface of the circular frame 121 is equidistantly fixed with There are several first bumps 127 , and a plurality of support plates 13 are fixed on the inner wall of the grinding cylinder 1 and under the circular frame 121 , and the surface of each support plate 13 is fixed with a second bump 14 corresponding to the first bumps 127 . The movable groove 8 and the slider 9 of the square structure can effectively transmit torque, so that the screening structure 12 can follow the rotation of the grinding structure 4, and as the screening structure 12 rotates, the first protrusions 127 will alternately pass over the second protrusions 14, This makes the circular frame 121 jump continuously, improving the screening efficiency of the screen 124 .

As shown in Figure 1, the suction structure 6 includes a suction pump 61 fixed on the outer wall of the grinding cylinder 1. The inlet of the suction pump 61 is fixedly connected with a suction pipe 62, and the end of the suction pipe 62 away from the suction pump 61 passes through the grinding chamber. The side wall of the cylinder 1 extends above the screening structure 12 , and the outlet of the suction pump 61 is fixedly connected with a return pipe 63 , and the end of the return pipe 63 away from the suction pump 61 extends through the top wall of the grinding cylinder 1 to above the grinding structure 4 . After grinding a certain amount, you can stop adding silicon carbide fragments, keep the grinding structure 4 and the screening structure 12 to continue to rotate, start the suction pump 61 to extract the powder on the surface of the screen 124, and then re-add it through the return pipe 63 Go to the top of the grinding cylinder 1 to re-grind the unqualified silicon carbide particles.

Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes, modifications and substitutions can be made to these embodiments without departing from the principle and spirit of the present invention. and modifications, the scope of the invention is defined by the appended claims and their equivalents.

Claims (9)

1. The utility model provides a carborundum miropowder automatic grinding device which characterized in that: including grinding vessel (1), grinding vessel (1) top is closed design, and grinding vessel (1) bottom has seted up bin outlet (15), grinding vessel (1) diapire is the back taper, grinding vessel (1) upper surface middle part is fixed with first motor (2), first motor (2) drive end is fixed with drive shaft (3), drive shaft (3) bottom passes grinding vessel (1) roof fixedly connected with grinding structure (4), and drive shaft (3) are connected through the bearing rotation with grinding vessel (1) roof, grinding structure (4) bottom middle part is fixed with connecting rod (7), movable groove (8) have been seted up to connecting rod (7) bottom, inside sliding connection of movable groove (8) has slider (9), slider (9) lower surface fixedly connected with movable rod (10), movable rod (10) bottom fixedly connected with screening structure (12), grinding vessel (1) top one side is fixed with carries heating material loading structure (5) of carborundum fragment, grinding vessel (1) is kept away from heating material loading structure (5) and is fixed with back structure (6).

2. The automatic grinding device for silicon carbide micro powder according to claim 1, wherein: the utility model provides a feeding mechanism, including heating material loading structure (5), feed pipe (51) that the level set up, feed pipe (51) keep away from pan feeding mouth fixedly connected with pan feeding hopper (52) on one side of grinding vessel (1), feed pipe (51) are close to discharge gate fixedly connected with unloading pipe (53) of grinding vessel (1) one end, and unloading pipe (53) bottom and grinding vessel (1) roof fixed connection, feed pipe (51) inside rotation is connected with auger (54), feed pipe (51) lateral wall is fixed with second motor (55), auger (54) center pin passes feed pipe (51) lateral wall and second motor (55) drive end fixed connection.

3. The automatic grinding device for silicon carbide micro powder according to claim 2, wherein: an arc-shaped electric heating plate (56) is fixed on the inner wall of the feeding pipe (51).

4. The automatic grinding device for silicon carbide micro powder according to claim 1, wherein: the grinding structure (4) comprises a conical grinding block (41) fixedly connected with the bottom end of the driving shaft (3), and a plurality of steps (42) are formed in the side wall of the bottom end of the conical grinding block (41).

5. The automatic grinding device for silicon carbide micro powder according to claim 4, wherein: a plurality of dispersing plates (43) are fixed on the upper surface of the conical grinding block (41).

6. The automatic grinding device for silicon carbide micro powder according to claim 1, wherein: screening structure (12) are including circular frame (121), circular frame (121) inner wall is fixed with a plurality of horizontal poles (122), and is a plurality of horizontal poles (122) keep away from circular frame (121) inner wall one end and are common fixedly connected with round platform (123), and movable rod (10) bottom and round platform (123) pass through bolt fixed connection, circular frame (121) is inside and be located horizontal pole (122) top and be fixed with screen cloth (124).

7. The automatic grinding device for silicon carbide micro powder according to claim 6, wherein: annular groove (125) have been seted up to circular frame (121) outer wall, annular groove (125) inside joint has sealing washer (126), and sealing washer (126) are laminated with grinding vessel (1) inner wall.

8. The automatic grinding device for silicon carbide micro powder according to claim 6, wherein: the utility model discloses a grinding machine, including movable groove (8), slider (9), round frame (121), grinding vessel (1), support plate (13), every, the common fixedly connected with spring (11) of roof in movable groove (8) in slider (9) upper surface and movable groove (8), round frame (121) lower surface equidistance is fixed with a plurality of first lugs (127), grinding vessel (1) inside wall just is located round frame (121) below and is fixed with a plurality of backup pads (13), every backup pad (13) surface all is fixed with second lug (14) that correspond with first lug (127).

9. The automatic grinding device for silicon carbide micro powder according to claim 1, wherein: the suction structure (6) comprises a suction pump (61) fixed on the outer side wall of the grinding cylinder (1), a suction pipe (62) is fixedly connected to an inlet of the suction pump (61), one end of the suction pipe (62) away from the suction pump (61) penetrates through the side wall of the grinding cylinder (1) to extend to the upper portion of the screening structure (12), a return pipe (63) is fixedly connected to an outlet of the suction pump (61), and one end of the return pipe (63) away from the suction pump (61) penetrates through the top wall of the grinding cylinder (1) to extend to the upper portion of the grinding structure (4).