Raw material crushing device for corundum brick production and crushing method thereof

Abstract

The invention discloses a raw material crushing device for corundum brick production and a crushing method of the raw material crushing device, relates to the field of corundum brick production, and aims to solve the problems that the production efficiency is influenced and the production cost is increased due to the fact that crushed corundum brick raw materials are different in granularity and raw material accumulation is easily caused between a crushing procedure and a grinding procedure. A crushing box is fixedly connected to the rack, a crushing cavity, a filter plate and a crushing box are arranged in the crushing box, a discharging cavity is formed in the side edge of the filter plate, the lower portion of the crushing box communicates with a conveying pipe, the conveying pipe is fixedly connected with the rack, a vibration hopper is slidably connected to the lower portion of the conveying pipe, a first discharging pipe is fixedly connected to the lower portion of the vibration hopper, and a through hole is formed in the conveying pipe. The crushing device has the advantages that the raw materials are screened before being crushed, and after the raw materials are crushed, the material returning assembly can convey large-particle raw materials back to the crushing cavity for secondary crushing, so that the crushing effect on the raw materials is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of corundum brick production, and more particularly to a raw material crushing device and a crushing method for corundum brick production. Background Art

[0002] In the production process of corundum bricks, the crushing and grinding of raw materials are two crucial steps. The traditional production method usually involves putting the raw materials into a crusher for preliminary crushing, and then sending the crushed raw materials into a grinding device for further refinement.

[0003] The crushing of raw materials is carried out by pouring the raw materials into a crusher. However, after the raw materials are crushed in the crusher, the particle sizes are often inconsistent, which not only increases the difficulty of the subsequent grinding process but also affects the overall production efficiency. In addition, compared with the crushing equipment, the efficiency of the grinding equipment is usually low. The efficiency of the crushing equipment can reach 10%, while the efficiency of the grinding equipment is only 1%. This efficiency difference leads to the accumulation of raw materials between the crushing and grinding processes on the assembly line, further affecting the overall production efficiency. Due to the mismatch between the crushing and grinding processes, the production line often needs to add additional equipment and labor to handle the accumulated raw materials, which undoubtedly increases the production cost.

[0004] The patent with the application number "CN202323630804.3" discloses "an electrofused zircon corundum brick raw material crusher, including a crusher main body, which includes a main body frame, a feeding hopper, and a crushing box. The main body frame surrounds the feeding hopper and the crushing box. The feeding hopper is arranged at the top of the crushing box, and one end of the feeding hopper is provided with a feeding port. Inside the crushing box, there are a crushing component, a grinding component, and a collection tank. The inner wall surface of the crushing box is provided with a dust suction component, and inside the dust suction component, there is a dust accumulation drawer." This application sets both a crushing roller and a grinding roller to perform secondary treatment on the raw materials, making the raw materials crushed more thoroughly to a certain extent. However, it is easy to cause the accumulation of raw materials above the grinding component, resulting in the repeated contact between the crushing component and the raw materials in the crushing box, which instead increases the generation of dust. After the crushed raw material particles are ground by the grinding component, it cannot ensure that the particle sizes of the raw materials are the same, and there will still be some large particle raw materials leaking under the wrapping of small particle raw materials. In addition, installing a grinding component below the crushing component requires an additional power system, increasing the production cost of the equipment. Summary of the Invention

[0005] In view of the above situation, to overcome the defects of the prior art, the present invention provides a raw material crushing device and a crushing method for corundum brick production, which effectively solve the problems of different particle sizes in the crushing of corundum brick raw materials and the easy accumulation of raw materials between the crushing process and the grinding process, thus affecting the production efficiency and increasing the production cost.

[0006] To achieve the above object, the present invention provides the following technical solutions: The present invention includes a frame, on which a crushing box is fixedly connected. A crushing chamber is provided inside the crushing box, and a crushing component is arranged in the crushing chamber. A filter plate is arranged on the side of the crushing component. The filter plate is connected to the crushing box. A feeding chamber is arranged on the side of the filter plate. A feeding pipe is communicated below the crushing box and is fixedly connected to the frame. A vibrating hopper is slidably connected below the feeding pipe. A first discharge pipe is fixedly connected below the vibrating hopper. A through hole communicating with the vibrating hopper is opened on the feeding pipe. A return material component is connected between the feeding pipe and the crushing box;

[0007] The return material component includes a spiral feeding rod which is rotatably connected inside the feeding pipe. The feeding pipe is inclined and installed on the frame. A second discharge pipe is fixedly connected to the upper end of the feeding pipe. A return pipe is fixedly connected to the second discharge pipe, and the other end of the return pipe is fixedly connected to the crushing box.

[0008] Preferably, an aggregate hopper is fixedly connected to the frame. The upper end of the aggregate hopper is fixedly connected to the crushing box, and the lower end of the aggregate hopper is fixedly connected to the feeding pipe. A support plate is fixedly connected above the frame, and the support plate is fixedly connected to the other end of the feeding pipe.

[0009] Preferably, the vibrating hopper is attached to the back of the feeding pipe. One end of the vibrating hopper is fixedly connected to a first guide rod which is slidably connected to the support plate. A first spring is sleeved on the first guide rod between the support plate and the feeding pipe. The other end of the vibrating hopper is fixedly connected to a second guide rod which is slidably connected to a baffle. The baffle is fixedly connected to the feeding pipe. A second spring is sleeved on the second guide rod between the baffle and the vibrating hopper.

[0010] Preferably, ribs are fixedly connected to the outside of the feeding pipe. Hole grooves are provided on the ribs on both sides of the through hole, and vibrating pieces are arranged in the hole grooves. The vibrating pieces are fixedly connected to the feeding pipe. A dial rod cooperating with the vibrating pieces is fixedly connected inside the vibrating hopper. A first connecting rod is hinged to the outside of the vibrating hopper. The first connecting rod is rotatably hinged to a second connecting rod, and the second connecting rod is rotatably connected to a driving platform.

[0011] Preferably, one end of the driving platform is hinged to the frame. A chute is provided at the other end of the driving platform. A T-shaped pull rod is arranged in the chute. The lower part of the pull rod is slidably connected to the frame. A damping spring is sleeved on the pull rod below the frame. An eccentric wheel is rotatably connected to the driving platform, and the eccentric wheel is rotatably connected to the second connecting rod.

[0012] Preferably, the gravel component includes a first crushing roller, the first crushing roller is fixedly connected with a first gear, the first gear meshes with a second gear, the second gear is fixedly connected with a second crushing roller, an aggregate block is arranged on the outer sides of the first crushing roller and the second crushing roller, the aggregate block is fixedly connected with the crushing box, and an inclined groove is arranged at the upper end of the aggregate block.

[0013] Preferably, a conveyor belt is arranged below the first discharge pipe, a support is arranged below the conveyor belt, the support is fixedly connected with the frame, a first roller is rotatably connected in the frame, and inclined second rollers are arranged on both sides of the first roller, and the second rollers are rotatably connected with the support.

[0014] Preferably, the spiral feeding rod includes a driving shaft, the driving shaft is in a frustum structure, and spiral blades are fixedly connected to the driving shaft.

[0015] Preferably, a protective plate is fixedly connected to one side of the crushing box, a protective cavity is left between the protective plate and the crushing box, fixing holes connected to the return pipe are arranged on both sides of the protective cavity, and a cover plate is hinged to the other side of the crushing box.

[0016] Preferably, the raw materials are poured from the top of the crushing box into the crushing box. Under the action of the filter plate, the small-particle raw materials directly enter the blanking cavity, and the large-particle raw materials enter the crushing box and are crushed by the gravel component. After the raw materials are processed by the crushing box, they enter the conveying pipe. Under the action of the through hole, the small-particle raw materials in the conveying pipe are filtered into the vibrating hopper and discharged. The large-particle raw materials in the conveying pipe pass through the second discharge pipe and the return pipe and are subjected to secondary crushing treatment in the conveyor belt crushing box. The conveying pipe is inclined, the opening of the conveying pipe for receiving the raw materials is located below the crushing box, and the opening of the conveying pipe connected to the second discharge pipe is higher than the upper top surface of the crushing box. The raw materials in the return pipe flow smoothly into the crushing box under the action of gravity.

[0017] Compared with the prior art, the outstanding advantages of the present invention are:

[0018] In the present invention, an inclined filter plate is installed in the crushing box. The filter plate filters small particles and fine powder in the raw materials into the blanking cavity, avoiding the generation of large amounts of dust due to the collision of the fine powder with the gravel component, and at the same time reducing the total amount of raw materials in the crushing cavity, ensuring that the gravel component fully crushes the raw materials in the crushing cavity.

[0019] In the present invention, a vibrating hopper and a second discharge pipe are connected to the conveying pipe, and the raw materials in the conveying pipe are screened by the two. On the one hand, it ensures that the raw materials flowing out of the vibrating hopper have a smaller particle size. On the other hand, the larger raw material particles are conveyed back to the crushing box through the second discharge pipe and the return component for further processing, so as to ensure that the corundum raw materials are fully crushed in the crushing process. Description of the Drawings

[0020] Figure 1 This is the overall axonometric structure diagram of the present invention.

[0021] Figure 2 This is the left view structure diagram of the present invention.

[0022] Figure 3 This is the connection structure diagram of the filter plate of the present invention.

[0023] Figure 4 This is the sectional structure diagram of the crushing box of the present invention.

[0024] Figure 5 This is the sectional structure diagram of the upper end of the crushing box of the present invention.

[0025] Figure 6 This is the structure diagram of the gravel component of the present invention.

[0026] Figure 7 This is the left view structure diagram of the feed pipe of the present invention.

[0027] Figure 8 This is the connection structure diagram of the drive table of the present invention.

[0028] Figure 9 This is the sectional structure diagram of the bottom of the vibrating hopper of the present invention.

[0029] Figure 10 This is the left view sectional structure diagram of the feed pipe of the present invention.

[0030] Figure 11 This is the present invention Figure 9 The enlarged structure diagram of A in it.

[0031] Figure 12 This is the connection structure diagram of the frame of the present invention.

[0032] Figure 13 This is the connection structure diagram of the conveyor belt of the present invention.

[0033] Reference numerals in the figure: 1, frame; 2, crushing box; 3, crushing chamber; 4, crushing component; 401, first crushing roller; 402, first gear; 403, second gear; 404, second crushing roller; 405, aggregate block; 406, chute; 5, filter plate; 6, aggregate hopper; 7, feeding chamber; 8, conveying pipe; 9, vibrating hopper; 10, first discharge pipe; 11, through hole; 12, return material component; 1201, spiral feeding rod; 1202, second discharge pipe; 1203, return pipe; 13, support plate; 14, first guide rod; 15, first spring; 16, second guide rod; 17, baffle; 18, second spring; 19, rib plate; 20, hole groove; 21, vibrating piece; 22, lever; 23, first connecting rod; 24, second connecting rod; 25, driving platform; 26, chute; 27, pull rod; 28, shock-absorbing spring; 29, eccentric wheel; 30, conveyor belt; 31, support; 32, first roller; 33, second roller; 34, guard plate; 35, protection chamber; 36, cover plate. Detailed implementation manner

[0034] Combined with the attached drawings in the embodiments of the present invention below, the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work belong to the scope of protection of the present invention.

[0035] Please refer to the attached Figure 1-13 , a raw material crushing device and its crushing method for corundum brick production in this embodiment: including a frame 1, a crushing box 2 is fixedly connected to the frame 1, a crushing chamber 3 is arranged in the crushing box 2, a crushing component 4 is arranged in the crushing chamber 3, a filter plate 5 is arranged on the side of the crushing component 4, the filter plate 5 is connected to the crushing box 2, a feeding chamber 7 is arranged on the side of the filter plate 5, a conveying pipe 8 is communicated below the crushing box 2, the conveying pipe 8 is fixedly connected to the frame 1, a vibrating hopper 9 is slidably connected below the conveying pipe 8, a first discharge pipe 10 is fixedly connected below the vibrating hopper 9, a through hole 11 communicating with the vibrating hopper 9 is opened on the conveying pipe 8, and a return material component 12 is connected between the conveying pipe 8 and the crushing box 2; the return material component 12 includes a spiral feeding rod 1201, the spiral feeding rod 1201 is rotatably connected in the conveying pipe 8, the conveying pipe 8 is obliquely installed on the frame 1, a second discharge pipe 1202 is fixedly connected to the upper end of the conveying pipe 8, a return pipe 1203 is fixedly connected to the second discharge pipe 1202, and the other end of the return pipe 1203 is fixedly connected to the crushing box 2.

[0036] The frame 1 is composed of multiple square steels welded to each other. The frame 1 is divided into two layers. The crushing box 2 is of a cuboid structure and is installed at the right end of the upper layer of the frame 1. The filter plate 5 in the crushing box 2 is placed obliquely. One side of the filter plate 5 is the crushing chamber 3, which functions to crush raw materials, breaking large-particle raw materials into small-particle raw materials. The other side of the filter plate 5 is the blanking chamber 7, and the blanking chamber 7 is directly connected to the conveying pipe 8. There are filter holes on the filter plate 5. When the raw materials pass through the filter plate 5 in the crushing box 2, the small-particle and powdered raw materials will pass through the filter holes of the filter plate 5 and enter the blanking chamber 7. This can avoid excessive dust generated by the collision of small particles and powder with the crushing component 4, and at the same time can relatively reduce the total amount of raw materials in the crushing chamber 3, enabling the crushing component 4 to fully crush the raw materials in the crushing chamber 3 and improving the crushing effect of the raw materials; the raw materials in the crushing chamber 3 and the blanking chamber 7 finally enter the conveying pipe 8. The conveying pipe 8 is placed obliquely, and the spiral feeding pipe obliquely transports the raw materials in the conveying pipe 8. When the raw materials move through the through hole 11, the small-particle raw materials pass through the through hole 11 and enter the vibrating hopper 9, and flow out through the vibrating hopper 9 and the first discharge pipe 10 for the next process. The large particles that do not pass through the through hole 11 will be in the second discharge pipe 1202 on the conveying pipe along with the spiral feeding pipe. There is an inclined return pipe 1203 connected between the second discharge pipe 1202 and the crushing box 2. The return pipe 1203 inclines towards the crushing box 2. The second discharge pipe 1202 is a Y-shaped structure placed upside down. The large-particle raw materials will roll into the crushing box 2 in the second discharge pipe 1202 and the return pipe 1203. The raw materials entering the crushing box 2 are screened and crushed again, thus ensuring that the raw materials are fully crushed, ensuring that the raw materials have the same particle size during crushing, improving the working efficiency of the subsequent grinding process, and at the same time performing a part of the raw material return treatment during the crushing work to avoid the accumulation of raw materials between the crushing process and the grinding process, ensuring the smooth and orderly progress of the overall process; the first discharge pipe 10, the second discharge pipe 1202, and the return pipe 1203 are all tubular structures, and the inner walls of the three are smooth. The vibrating hopper 9 has the same inclination as the conveying pipe. The first discharge pipe 10 is located below the vibrating hopper 9. The vibrating hopper 9 has a vibrating function, which can avoid the blockage of the first discharge pipe 10 during the blanking process under the action of vibration. The second discharge pipe 1202 and the return pipe 1203 contain large-particle raw materials. The small-particle and powdered raw materials are filtered at the through hole 11 of the conveying pipe 8. In this way, the large-particle raw materials have less friction with the inner walls of the round holes of the second discharge pipe 1202 and the return pipe 1203, facilitating the large-particle raw materials to enter the crushing box 2 again and avoiding the blockage of raw materials. A support member for supporting the return pipe 1203 is provided in the middle of the support 31 to improve the stability of the return pipe 1203.

[0037] A collecting hopper 6 is fixedly connected to the frame 1. The upper end of the collecting hopper 6 is fixedly connected to the crushing box 2, and the lower end of the collecting hopper 6 is fixedly connected to the feeding pipe 8. A support plate 13 is fixedly connected above the frame 1, and the support plate 13 is fixedly connected to the other end of the feeding pipe 8.

[0038] The feeding pipe 8 is connected to the crushing box 2 through the collecting hopper 6. The collecting hopper 6 is of a funnel structure. The connection port between the collecting hopper 6 and the crushing box 2 is relatively large, and the connection port between the collecting hopper 6 and the feeding pipe 8 is relatively small. The side plates of the collecting hopper 6 are connected by fixing screws. By rotating the fixing screws, the side plates can be disassembled. The detachable side plates facilitate the subsequent maintenance of the device. The support plate 13 is located above the left side of the mechanism. The support plate 13 is used to support the upper end of the feeding pipe 8, improving the overall stability of the feeding pipe 8.

[0039] The vibrating hopper 9 is attached to the back of the feeding pipe 8. One end of the vibrating hopper 9 is fixedly connected to a first guide rod 14. The first guide rod 14 is slidably connected to the support plate 13. A first spring 15 is sleeved on the first guide rod 14 between the support plate 13 and the feeding pipe 8. The other end of the vibrating hopper 9 is fixedly connected to a second guide rod 16. The second guide rod 16 is slidably connected to a baffle 17. The baffle 17 is fixedly connected to the feeding pipe 8. A second spring 18 is sleeved on the second guide rod 16 between the baffle 17 and the vibrating hopper 9.

[0040] The vibrating hopper 9 is closely attached to the back of the feeding pipe 8. The first guide rod 14 and the second guide rod 16 are respectively located on both sides of the vibrating hopper 9. The first guide rod 14 and the second guide rod 16 play a guiding role in the movement of the vibrating hopper 9, preventing the vibrating hopper 9 from detaching from the back of the feeding pipe 8. The support plate 13 and the baffle 17 are fixed on the feeding pipe 8. The support rod and the baffle 17 respectively play a supporting role for the first guide rod 14 and the second guide rod 16. Cylindrical pieces are connected to the outer ends of the first guide rod 14 and the second guide rod 16. Under the action of the cylindrical pieces, the first guide rod 14 and the second guide rod 16 are prevented from detaching from the support plate 13 and the baffle 17. The first spring 15 on the first guide rod 14 and the second spring 18 on the second guide rod 16 play a role of reciprocating rebound for the vibrating hopper 9, causing the vibrating hopper 9 to vibrate with a small range and high frequency, thereby preventing the raw materials from accumulating in the vibrating hopper 9, and the raw materials in the vibrating hopper 9 flow out quickly from the first discharge pipe 10.

[0041] A motor for driving the second connecting rod 24 to rotate is installed on the driving platform 25. The vibrating hopper 9, the first connecting rod 23, and the rotating second connecting rod 24 together form a crank-slider mechanism. The rotation of the second connecting rod 24 drives the vibrating hopper 9 to reciprocate, so as to make the vibrating hopper 9 reciprocate. To improve the vibration effect of the vibrating hopper 9, one side of the driving platform 25 is hinged to the frame 1, and the other end of the driving platform 25 has a downward pulling force through the pull rod 27 and the shock-absorbing spring 28. When the motor works, the jitter of the motor will drive the driving platform 25 to jitter, so that the second connecting rod 24 drives the first connecting rod 23 to shake. In addition, an eccentric wheel 29 is installed on the driving motor. The eccentric wheel 29 is rotationally connected to the first connecting rod 23. The eccentric wheel 29 drives the second connecting rod 24 to move within a small range, so that the second connecting rod 24 drives the first connecting rod 23 to vibrate at a high frequency, improving the vibration frequency of the vibrating hopper 9 and avoiding blockage at the vibrating hopper 9.

[0042] The feeding pipe 8 on the upper side of the vibrating hopper 9 discharges materials downward through the through hole 11. Inside the feeding pipe 8, the spiral feeding rod 1201 is in spiral contact with the inside of the feeding pipe 8 to prevent large-particle raw materials from getting stuck in the through hole 11. There is also a large amount of raw material powder in the spiral feeding pipe. To prevent the raw material powder from staying in the through hole 11, a vibrating piece 21 is fixedly installed on the spiral feeding pipe. The vibrating piece 21 is an elastic part. The end of the vibrating piece 21 is aligned with the center of the dial rod 22. The dial rod 22 is a columnar structure. When the dial rod 22 reciprocates with the vibrating hopper 9, the columnar surface of the dial rod 22 contacts the vibrating piece 21. The acting force between the dial rod 22 and the vibrating piece 21 will cause the vibrating piece 21 to deform. The vibrating piece 21 stores elastic potential energy. After the vibrating piece 21 bends at a certain angle, the dial rod 22 will move to the other side of the vibrating piece 21. Then, the elastic energy stored in the vibrating piece 21 is instantly released, and the vibrating piece 21 vibrates in the hole groove 20. Under the action of the vibration of the vibrating piece 21 on the feeding pipe 8, the through hole 11 on the feeding pipe 8 is dredged, ensuring the smoothness of the through hole 11 and avoiding the blockage of the feeding function of the feeding pipe 8. To improve the stability of the feeding pipe 8, a rib plate 19 is installed in the middle of the feeding pipe 8. The rib plate 19 is located outside the feeding pipe 8. The hole groove 20 on the rib plate 19 cooperates with the vibrating piece 21 to provide sufficient space for the vibration of the vibrating piece 21.

[0043] The first crushing roller 401 and the second crushing roller 404 in the crushing component 4 are the crushing component 4. The cutter teeth on the first crushing roller 401 and the second crushing roller 404 are staggered, so that the distance between the first crushing roller 401 and the second crushing roller 404 will be more compact, and the raw materials will be crushed into smaller particles when being crushed. There are two groups of aggregate blocks 405, and the two groups of aggregate blocks 405 are respectively located outside the first crushing roller 401 and the second crushing roller 404. The card slots on the aggregate blocks 405 cooperate with the cutter teeth on the first crushing roller 401 and the second crushing roller 404. Oblique slots 406 are opened at the upper parts of the two aggregate blocks 405, and the two aggregate blocks 405 form a V-shaped structure under the action of the oblique slots 406. In this way, the raw materials in the crushing chamber 3 will gather towards the first crushing roller 401 and the second crushing roller 404, facilitating the crushing work of the raw materials.

[0044] The conveyor belt below the first discharge pipe 10 is used to connect the crushing process and the grinding process in brick production. The raw materials that pass the screening flow out from the vibrating hopper 9 and the first discharge pipe 10 and then fall onto the conveyor belt 30. The first discharge pipe 10 is located above the center line of the conveyor belt 30. The bracket 31 supports the lower part of the conveyor belt 30, improving the load-bearing capacity of the conveyor belt 30 and avoiding the breakage of the conveyor belt 30 caused by excessive load. Further, in order to reduce the friction between the conveyor belt 30 and the bracket 31, the first roller 32 and the second roller 33 are installed on the bracket 31, reducing the damage of the conveyor belt 30 caused by friction. At the same time, the two second rollers 33 are located on both sides of the first roller 32, and the outer sides of the two second rollers 33 are inclined upward, so that both sides of the conveyor belt 30 are tilted upward. In this way, the loading capacity of the conveyor belt 30 can be increased, avoiding the falling of raw materials during transportation and improving the efficiency during the transfer process.

[0045] Inside the feed pipe 8, the overall outer contour of the spiral feed pipe is a frustum structure. The driving shaft and the spiral blade are closely attached to the inner wall of the feed pipe 8 at the lower end of the spiral feed pipe. Along the feed pipe 8 upward, the gap between the spiral blade and the inner wall of the feed pipe 8 gradually increases. In this way, it can not only avoid the accumulation of raw materials at the connection port between the feed pipe 8 and the crushing box 2, but also prevent small particles from entering the return material component 12 again.

[0046] One side of the crushing box 2 is connected with a connecting guard plate 34, and the other side is connected with a cover plate 36. The cover plate 36 covers the upper opening of the crushing box 2. The guard plate 34 forms a protective cavity 35 with the crushing box 2. The protective cavity 35 protects the pipe orifice of the return pipe 1203. When feeding materials into the crushing box 2, it can prevent raw materials from entering the pipe orifice of the return pipe. The pipe orifice of the return pipe 1203 is located above the filter plate 5, so that the return materials can be fully screened.

[0047] The overall working process of the present invention:

[0048] Primary screening: The raw materials entering the crushing box 2 will encounter the inclined filter plate 5. Under the action of the filter plate 5, small-particle raw materials will directly penetrate the filter holes and enter the blanking cavity 7. These fine particles do not require further crushing treatment, while large-particle raw materials cannot penetrate the filter holes and will remain in the crushing box 2 to be prepared for crushing by the crushing component 4.

[0049] Crushing treatment: Large-particle raw materials are crushed into small particles under the mechanical action of the crushing component 4 in the crushing cavity 3. The crushing component 4 is composed of a first crushing roller 401, a second crushing roller 404, and an aggregate block 405, and reduces the particle size of the raw materials through physical impact or shearing action.

[0050] Entering the conveying pipe 8: The raw materials after crushing treatment (including the originally fine small-particle raw materials and the newly crushed small-particle raw materials) enter the inclined conveying pipe 8 from the bottom or side of the crushing box 2. The opening of the conveying pipe 8 is located below the crushing box 2 to ensure that the raw materials can flow in smoothly.

[0051] Secondary screening and conveying: In the conveying pipe 8, the raw materials continue to move forward under the action of the spiral feeding pipe. The conveying pipe 8 is provided with through holes 11. When the raw materials move near these through holes 11, the small-particle raw materials will be filtered out again and fall into the vibrating hopper 9 through the through holes 11. The vibrating hopper 9 has a vibrating function to ensure that the raw materials can be smoothly discharged from the hopper and are prepared to enter the next processing stage.

[0052] Secondary crushing of large-particle raw materials: The large-particle raw materials not filtered out by the through holes 11 in the conveying pipe 8 continue to move forward and are finally discharged through the second discharge pipe 1202. The second discharge pipe 1202 is connected to the return pipe 1203 to form a closed-loop system. The return pipe 1203 is inclined towards the crushing box 2 to ensure that the large-particle raw materials can smoothly flow back into the crushing box 2. These large-particle raw materials roll in the return pipe 1203 and enter the crushing box 2 again to receive secondary crushing treatment.

[0053] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A raw material crushing device for corundum brick production, characterized in that: The invention comprises a frame (1), a crushing box (2) is fixedly connected to the frame (1), a crushing chamber (3) is provided in the crushing box (2), a crushing assembly (4) is provided in the crushing chamber (3), a filter plate (5) is provided on the side of the crushing assembly (4), the filter plate (5) is connected to the crushing box (2), a material discharge chamber (7) is provided on the side of the filter plate (5), a feed pipe (8) is connected below the crushing box (2), the feed pipe (8) is fixedly connected to the frame (1), a vibration hopper (9) is slidably connected below the feed pipe (8), a first discharge pipe (10) is fixedly connected below the vibration hopper (9), a through hole (11) connected to the vibration hopper (9) is opened on the feed pipe (8), and a return assembly (12) is connected between the feed pipe (8) and the crushing box (2); The return material assembly (12) comprises a spiral feed rod (1201), the spiral feed rod (1201) is rotatably connected in a feed pipe (8), the feed pipe (8) is obliquely mounted on the frame (1), the upper end of the feed pipe (8) is fixedly connected to a second discharge pipe (1202), the second discharge pipe (1202) is fixedly connected to a return material pipe (1203), and the other end of the return material pipe (1203) is fixedly connected to the crushing box (2).

2. The raw material crushing device for producing corundum bricks according to claim 1 is characterized in that: A collecting hopper (6) is fixedly connected to the frame (1), the upper end of the collecting hopper (6) is fixedly connected to the crushing box (2), the lower end of the collecting hopper (6) is fixedly connected to the conveying pipe (8), and a support plate (13) is fixedly connected to the top of the frame (1), and the support plate (13) is fixedly connected to the other end of the conveying pipe (8).

3. The raw material crushing device for producing corundum bricks according to claim 2 is characterized in that: The vibrating hopper (9) is attached to the back side of the feeding pipe (8), one end of the vibrating hopper (9) is fixedly connected to a first guide rod (14), the first guide rod (14) is slidably connected to the support plate (13), a first spring (15) is sleeved on the first guide rod (14) between the support plate (13) and the feeding pipe (8), the other end of the vibrating hopper (9) is fixedly connected to a second guide rod (16), the second guide rod (16) is slidably connected to a baffle (17), the baffle (17) is fixedly connected to the feeding pipe (8), and a second spring (18) is sleeved on the second guide rod (16) between the baffle (17) and the vibrating hopper (9).

4. A raw material crushing device for producing corundum bricks according to claim 1 or 3, characterized in that: The outer side of the feeding pipe (8) is fixedly connected with a rib plate (19), and the rib plates (19) on both sides of the through hole (11) are provided with hole grooves (20), and a vibration plate (21) is provided in the hole groove (20), and the vibration plate (21) is fixedly connected to the feeding pipe (8), and a lever (22) cooperating with the vibration plate (21) is fixedly connected in the vibration hopper (9), and a first connecting rod (23) is hinged on the outer side of the vibration hopper (9), and the first connecting rod (23) is rotatably hinged with a second connecting rod (24), and the second connecting rod (24) is rotatably connected with a driving platform (25).

5. The raw material crushing device for producing corundum bricks according to claim 4, characterized in that: One end of the driving platform (25) is hinged to the frame (1), and the other end of the driving platform (25) is provided with a slide groove (26). A T-shaped pull rod (27) is provided in the slide groove (26). The pull rod (27) is slidably connected to the frame (1) at the bottom. A shock-absorbing spring (28) is sleeved on the pull rod (27) at the bottom of the frame (1). An eccentric wheel (29) is rotatably connected to the driving platform (25), and the eccentric wheel (29) is rotatably connected to the second connecting rod (24).

6. The raw material crushing device for producing corundum bricks according to claim 1, characterized in that: The stone crushing assembly (4) comprises a first crushing roller (401), the first crushing roller (401) is fixedly connected to a first gear (402), the first gear (402) is meshed with a second gear (403), the second gear (403) is fixedly connected to a second crushing roller (404), the outer sides of the first crushing roller (401) and the second crushing roller (404) are matched with aggregate blocks (405), the aggregate blocks (405) are fixedly connected to the crushing box (2), and the upper end of the aggregate block is provided with an inclined groove (406).

7. The raw material crushing device for producing corundum bricks according to claim 1, characterized in that: A conveyor belt (30) is provided below the first discharge pipe (10), a bracket (31) is provided below the conveyor belt (30), the bracket (31) is fixedly connected to the frame (1), a first roller (32) is rotatably connected inside the frame (1), obliquely placed second rollers (33) are provided on both sides of the first roller (32), and the second roller (33) is rotatably connected to the bracket (31).

8. The raw material crushing device for producing corundum bricks according to claim 1, characterized in that: The spiral feeding rod (1201) comprises a driving shaft, which is a truncated cone structure, and a spiral blade is fixedly connected to the driving shaft.

9. The raw material crushing device for producing corundum bricks according to claim 1, characterized in that: A guard plate (34) is fixedly connected to one side of the crushing box (2), a guard cavity (35) is left between the guard plate (34) and the crushing box (2), and fixing holes connected to the return pipe (1203) are provided on both sides of the guard cavity (35), and a cover plate (36) is hingedly connected to the other side of the crushing box (2).

10. The method for crushing raw materials for producing corundum bricks according to claim 1, characterized in that: The raw materials are poured from the top of the crushing box (2) into the crushing box (2). Under the action of the filter plate (5), the small particles of the raw materials directly enter the feeding cavity (7), and the large particles of the raw materials enter the crushing box (2) and are crushed by the crushing component (4). After being processed by the crushing box (2), the raw materials enter the feeding pipe (8). Under the action of the through hole (11), the feeding pipe (8) filters the small particles of the raw materials and discharges them into the vibrating hopper (9). The large particles in the feeding pipe (8) are discharged. The granular raw material passes through the second discharge pipe (1202) and the return pipe (1203) and undergoes secondary crushing in the crushing box (2) of this conveyor belt (30). The feed pipe (8) is placed at an angle, and the opening of the feed pipe (8) for receiving the raw material is located below the crushing box (2). The opening where the feed pipe (8) is connected to the second discharge pipe (1202) is higher than the upper top surface of the crushing box (2). Under the action of gravity, the raw material in the return pipe (1203) flows smoothly into the crushing box (2).

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