Raw material crusher for refractory bricks

Abstract

The invention relates to the technical field of refractory brick processing, and particularly discloses a refractory brick raw material crusher which comprises a mounting base, a primary crusher body, a bearing box, a material receiving shell, a discharging shell, a filter screen plate, a sliding block and a pressing head. According to the raw material crusher for the refractory bricks, when the sliding blocks synchronously approach under the control of the driving assembly, the pressing heads arranged in the sliding blocks form dynamic fit, and the tip end of the conical head and the curved surface structure form a progressive curve extrusion area; and the curved conical head forms a wrapping type crushing track surrounding the material in the relative movement, so that the raw material which does not reach the standard of the filter screen plate can be subjected to secondary crushing, and the crushing degree of the material is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of refractory brick processing, and particularly relates to a raw material crusher for refractory bricks. Background Art

[0002] Refractory materials are generally divided into two types, namely unshaped refractory materials and shaped refractory materials. Unshaped refractory materials, also called castables, are a mixture of powdery granules composed of various aggregates or fillers and one or more binders. When in use, they must be mixed and stirred evenly with one or more liquids and have strong fluidity. Shaped refractory materials generally refer to refractory bricks, which have standard and regular shapes and can also be temporarily processed during cutting according to needs.

[0003] With the continuous development of China's cement industry, higher requirements have been put forward for refractory materials. The refractory material industry, which has long relied on the extensive economic growth mode, should increase the adjustment efforts to meet the needs of the new situation. There are problems in the refractory material industry of China's cement industry such as low industry concentration and shortage of raw material resources. Only by accelerating the reorganization and integration of refractory material production enterprises for cement kilns can we adapt to the rapid development of the cement industry.

[0004] Since the raw materials of refractory bricks are usually clay and other ingredients, they need to be crushed before use to facilitate subsequent reshaping.

[0005] A raw material crushing device for refractory brick production disclosed in a Chinese patent document with the publication number CN214636766U includes a crushing box. A discharge port is arranged at the lower end of the crushing box, and a feed port is arranged at the upper end of the crushing box. Two crushing wheels are arranged in parallel and at intervals inside the crushing box. A plurality of crushing teeth are arranged on the outer circumferential surface of the crushing wheel, and the crushing wheel is rotationally connected to a power device; a blocking device is also included. There are two blocking devices. The blocking device includes a compression spring, a rotating shaft, and an "L"-shaped rotating plate. The rotating plate includes a horizontal plate and a vertical plate. One end of the horizontal plate is located below the feed port, the other end of the horizontal plate is fixedly connected to the upper end of the vertical plate, and the connection part between the two is rotationally connected to the rotating shaft. One end of the compression spring is connected to the inner wall of the crushing box, and the other end of the compression spring is connected to the middle of the vertical plate.

[0006] However, the following defects still exist in the raw material crushing device in the above technical solution during use. It can only achieve the preliminary crushing of raw materials, and some of its crushing effects do not meet the crushing standards, resulting in uneven particle size distribution of the crushed raw materials. Some raw materials are insufficiently crushed, while some raw materials may be over-crushed. The overall crushing quality is uneven. Such uneven crushing results make the raw materials unable to directly meet the requirements of subsequent production or use. Summary of the Invention

[0007] In view of the above problems, the present invention proposes a raw material crusher for refractory bricks, which well solves the problem that after the raw materials are initially crushed, the crushing effect of some of them fails to meet the crushing standard, resulting in uneven particle size distribution of the crushed raw materials and insufficient crushing degree of some raw materials.

[0008] To achieve the above object, the technical solution adopted by the present invention is as follows: A raw material crusher for refractory bricks includes a mounting base, on which a primary crushing body is provided. The primary crushing body has a through-shaped feed port and a discharge port. The raw materials are poured into the primary crusher body through the feed port for initial crushing and then discharged through the discharge port. A primary crushing assembly, which is arranged inside the primary crushing body and is used for initially crushing the raw materials. A secondary crushing assembly, which is arranged at the bottom of the primary crushing body. The secondary crushing assembly includes a bearing box installed at the discharge port of the primary crushing body. A receiving shell and a discharge shell are respectively installed at the top and bottom of the bearing box. A filter screen plate is installed inside the bearing box. The raw materials fall onto the surface of the filter screen plate through the receiving shell for screening and then are discharged through the discharge shell. A sliding block is installed inside the bearing box, and a pressing head is arranged on the sliding block, which is used for secondarily crushing the raw materials staying on the surface of the filter screen plate. An extrusion assembly, which is arranged on the sliding block and is used to improve the crushing strength of the raw materials. <>

[0009] Further, the pressing head is composed of an outer disc and a conical head. A cavity and a limiting hole corresponding to the pressing head are formed on the sliding block, and the cavity and the limiting hole are communicated. The outer disc is slidably connected inside the corresponding limiting hole. <000>

[0010] Further, the extrusion assembly includes an extrusion part, a driving part, a lifting part and a pulling-back assembly. The lifting part cooperates with the pulling-back assembly to drive the extrusion part to grind the raw materials at the gap between two adjacent conical heads through the driving part.

[0011] Further, the extrusion part includes an inner cylinder fixed on the inner wall of the conical head. Multiple groups of extrusion blocks are arranged on the inner cylinder. The extrusion blocks from the root to the tip of the conical head are arranged on the inner cylinder from high to low. Each group of extrusion blocks is composed of multiple extrusion units, and the multiple extrusion units are arranged in a ring on the inner cylinder. The inner cylinder is provided with multiple equally spaced first sliding openings adapted to the extrusion blocks, and the extrusion blocks are slidably connected inside the corresponding first sliding openings. Multiple equally spaced second sliding openings adapted to the extrusion blocks are formed on the surface of the conical head, and the extrusion blocks are slidably connected inside the corresponding second sliding openings.

[0012] Further, an inner shaft is rotatably connected to the inner wall of the inner cylinder. One end of the extrusion block is fixed with a linkage block, a limiting shaft is fixed on the surface of the linkage block, a limiting slide rail is installed on the inner shaft, and the limiting shaft is slidably connected inside the limiting slide rail, and the initial position of the limiting shaft is at the bottom end of the limiting slide rail.

[0013] Further, the driving member includes a first driving shaft arranged inside the inner shaft. A slider is fixed on the surface of the first driving shaft. A chute adapted to the slider is formed at one end of the inner shaft facing the first driving shaft, and the slider is slidably connected inside the chute.

[0014] Further, a sleeve is sleeved on the surface of the end of the first driving shaft away from the inner shaft. One side of the inner cylinder facing the sleeve has a central hole, and the sleeve is located inside the central hole of the inner cylinder. A limiting block is fixed on the surface of the first driving shaft. A limiting slide opening adapted to the limiting block is formed on the surface of the sleeve, and the limiting block is slidably connected inside the limiting slide opening, and the limiting block can slide horizontally inside the limiting slide opening.

[0015] Further, a linkage gear ring is provided on the surface of the end of the sleeve away from the first driving shaft. The linkage gear ring is rotatably connected to the inner wall of the cavity. A plurality of lifting frames arranged at equal intervals are provided on the sliding block. Each lifting frame corresponds to a cavity. A linkage rack is fixed on the inner wall of the lifting frame, and the linkage rack is meshed with the linkage gear ring. A fixing plate is fixed on the inner wall of the cavity. A receiving round hole is formed on the fixing plate, and the outer wall of the sleeve is rotatably connected to the inner wall of the receiving round hole. A first end block and a second end block are fixed on one side of the inner cylinder.

[0016] Further, the lifting member includes a first top block fixed on the top of the lifting frame. An opening adapted to the first top block is formed on the sliding block, and the first top block is slidably connected inside the opening. Linkage shafts are fixed on both sides of the first top block. A plurality of grooves arranged at equal intervals are formed at the bottom of the material receiving shell. Each groove corresponds to a first top block. A limiting slide rail is fixed on the inner wall of the groove, and the limiting shaft is slidably connected inside the corresponding limiting slide rail.

[0017] Further, the pulling-back assembly includes a positioning shaft fixed on one side of the outer disc. A communication hole adapted to the positioning shaft is formed on the fixing plate, and the positioning shaft is slidably connected inside the corresponding communication hole. A ring-shaped wheel is fixed on the surface of the positioning shaft. Side pushing blocks are arranged on both sides of the lifting frame. The bottom end of the side pushing block away from the fixing plate has a first arc surface, and the top end of the side pushing block facing the positioning shaft has a second arc surface.

[0018] Compared with the prior art, the beneficial effects of the present invention are: 1. Inside the primary crushing body, there are two symmetrically arranged and synchronously reversely rotating crushing rollers. Driven by the second driving source and transmission components, the crushing rollers can rotate, quickly crushing the raw materials and improving the efficiency of primary crushing.

[0019] 2. When the sliding blocks approach synchronously under the control of the driving component, the pressure heads arranged inside them form a dynamic fit. The tip of the conical head and the curved surface structure form a progressive curve extrusion area. Through the linkage control of the driving component, the curved conical head forms a wrapped crushing trajectory around the material during relative movement, capable of secondary crushing of the raw materials that do not meet the filter plate standard and improving the degree of crushing of the materials.

[0020] 3. When the sleeve rotates, the limiting block drives the driving shaft to rotate, and the driving shaft drives the inner shaft to rotate through the slider. The limiting shaft slides from the bottom end to the top end of the limiting slide rail, so that the extrusion block slides out of the second sliding opening. Since the extrusion blocks are arranged on the inner cylinder in a pattern of "decreasing height from the root to the tip", the sliding extrusion blocks will form a stepped three-dimensional crushing surface. The extrusion block closer to the root of the conical head extends longer and exerts a greater extrusion force on the material, while the extrusion block closer to the tip is responsible for fine grinding of the fine particles.

[0021] 4. When the driving shaft rotates, when the limiting block contacts the second end block, as the limiting block rotates, the pushed second end block drives the inner cylinder to rotate through the driving shaft and the inner shaft, so that the pressure head rotates. At this time, the extrusion block generates a circumferential shear force, forming a superimposed effect with the extrusion force at the tip of the conical head, thereby increasing the crushing strength of the raw materials.

[0022] [[ID=,12]]5. The side push block squeezes the annular wheel, and the annular wheel drives the pressure head to slide towards the connected sliding block through the positioning shaft. At this time, the adjacent pressure heads squeeze each other, thereby applying pressure to the raw materials, ensuring uniform discharge particle size and improving the utilization rate of the raw materials.

[0023] 6. When the pressure head resets, the second reset spring releases an impact force, causing the pressure head to impact the material, further crushing the raw materials. At the same time, vibration can assist the material to pass through the filter screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a schematic structural diagram of the present invention.

[0025] Figure 2 is a schematic structural diagram of the primary crushing body of the present invention.

[0026] Figure 3 is a schematic structural diagram of the bearing box of the present invention.

[0027] Figure 4 is a schematic structural diagram of the first three-dimensional cross-section of the bearing box of the present invention.

[0028] Figure 5 It is a schematic structural diagram of the second three-dimensional cross-section of the carrier box in the present invention.

[0029] Figure 6 It is a schematic structural diagram of the first three-dimensional cross-section of the sliding block in the present invention.

[0030] Figure 7 It is a schematic structural diagram of the pressing head in the present invention.

[0031] Figure 8 It is a schematic structural diagram of the first three-dimensional cross-section of the pressing head in the present invention.

[0032] Figure 9 It is a schematic structural diagram of the three-dimensional cross-section of the inner cylinder in the present invention.

[0033] Reference numerals: 10. Mounting base; 11. Primary crushing body; 110. Feed port; 111. Discharge port; 12. Material receiving table; 120. Connecting piece; 121. First driving source; 20. Primary crushing assembly; 21. Crushing roller; 22. Transmission member; 23. Second driving source; 30. Secondary crushing assembly; 31. Carrier box; 3101. Material receiving shell; 3102. Discharge shell; 32. Filter screen plate; 33. Sliding block; 34. Cavity; 35. Pressing head; 350. Outer disc; 351. Conical head; 36. Limiting hole; 40. Extrusion assembly; 41. Extrusion member; 410. Inner cylinder; 411. Extrusion block; 412. First sliding port; 413. Second sliding port; 414. Inner shaft; 415. Linking block; 416. Limiting shaft; 417. Limiting slide rail; 43. Driving member; 430. First driving shaft; 431. Slide block; 432. Slide groove; 433. Sleeve; 434. Limiting block; 435. Limiting sliding port; 436. Linking gear ring; 437. Lifting frame; 438. Linking rack; 439. Fixed plate; 4310. First end block; 4311. Second end block; 44. Lifting member; 440. First top block; 441. Linking shaft; 442. Linking slideway; 45. Pull-back assembly; 450. Positioning shaft; 451. Ring-shaped wheel; 452. Side pushing block; 453. Accommodating groove; 454. First return spring; 455. Second return spring; 60. Driving assembly; 61. Second top block; 62. Second driving shaft; 63. Synchronous belt; 64. Third driving source. Detailed implementation manners

[0034] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention. Embodiment 1

[0035] As Figures 1 to 9 shown, a raw material crusher for refractory bricks of the present invention includes a mounting base 10. The mounting base 10 has a bayonet, and a primary crushing body 11 is installed inside the bayonet. Materials can be poured into the inside of the primary crushing body 11 for preliminary crushing.

[0036] An inlet port 110 and a discharge port 111 are respectively opened at the top and bottom of the primary crushing body 11, and the inlet port 110 and the discharge port 111 are arranged in a penetrating manner on the primary crushing body 11 in cooperation. Materials can be poured into the inside of the primary crushing body 11 through the inlet port 110 for processing and crushing, and the preliminarily crushed materials can be discharged through the discharge port 111.

[0037] A receiving table 12 is installed below the mounting base 10. The receiving table 12 has a concave receiving cavity, and the receiving table 12 is inclined. The top of the receiving table 12 is located below the discharge port 111 and is used to receive the crushed raw materials. A connecting member 120 is installed between the top of the receiving table 12 and the bottom of the mounting base 10 to support the receiving table 12. A first driving source 121 is installed on the surface of the receiving table 12, and the first driving source 121 is a vibration motor, which can vibrate the receiving table 12 to prevent the materials received by the receiving table 12 from accumulating inside it.

[0038] A primary crushing assembly 20 is installed inside the primary crushing body 11. The primary crushing assembly 20 includes two crushing rollers 21 symmetrically installed inside the primary crushing body 11, and the two crushing rollers 21 can rotate synchronously and reversely to crush the raw materials. A second driving source 23 is installed on the mounting base 10, and a transmission member 22 is installed outside the primary crushing body 11. The second driving source 23 is connected to the crushing roller 21 through the transmission member 22 to control the rotation of the crushing roller 21 to crush the raw materials. The transmission member 22 is a transmission structure in the prior art and will not be described further.

[0039] When crushing the raw materials, first pour the raw materials into the interior of the primary crushing body 11 through the feeding port 110. Turn on the second driving source 23 through the control system. The output end of the second driving source 23 drives the crushing roller 21 to rotate through the transmission member 22, and the two crushing rollers 21 rotate synchronously and in opposite directions to crush the raw materials. The crushed raw materials then fall to the top of the receiving table 12 through the discharging port 111, and the first driving source 121 drives the receiving table 12 to vibrate, so as to discharge the materials inside the receiving table 12 by means of vibration. Embodiment 2

[0040] Reference Figures 3 to 9 As shown, a secondary crushing assembly 30 is installed on the primary crushing body 11, which can perform secondary crushing on the materials after primary crushing, so as to enhance the crushing performance of the raw materials and improve the utilization rate of the raw materials.

[0041] The secondary crushing assembly 30 includes a bearing box 31. A receiving shell 3101 is installed on the top of the bearing box 31, and a discharging shell 3102 is installed on the bottom of the bearing box 31. Both the receiving shell 3101 and the discharging shell 3102 are in a horn shape. A filter screen plate 32 is fixed to the inner wall of the bearing box 31. The materials discharged from the discharging port 111 fall on the surface of the filter screen plate 32 through the receiving shell 3101, and after being filtered by the filter screen plate 32, they fall into the discharging shell 3102 and are discharged.

[0042] Two symmetrically arranged sliding blocks 33 are slidably connected to the inner wall of the bearing box 31. A plurality of cavities 34 are provided inside the sliding blocks 33, and a pressing head 35 is arranged inside each cavity 34, which is used for secondary extrusion and crushing of the larger raw materials on the surface of the filter screen plate 32, so as to improve the crushing efficiency of the raw materials.

[0043] The pressing head 35 includes an outer disk 350 and a conical head 351. The conical head 351 has a tip, and the tip of the conical head 351 faces away from the sliding block 33. A plurality of equally spaced limiting holes 36 adapted to the outer disk 350 are formed in the sliding block 33. Each limiting hole 36 corresponds to a cavity 34, and the cavity 34 is communicated with the corresponding limiting hole 36, and the outer wall of the outer disk 350 is slidably connected inside the corresponding limiting hole 36.

[0044] After the crushing roller 21 initially crushes the material, the crushed material drops onto the surface of the filter screen plate 32 inside the bearing box 31. The filter screen plate 32 filters out the smaller raw materials, while those that do not meet the filtering standard of the filter screen plate 32 remain on its surface. Then, the two sliding blocks 33 are synchronously slid. At this time, the two sliding blocks 33 approach each other. As the two sliding blocks 33 approach each other, the pressing head 35 can extrude the material. Since the conical heads 351 on the two sliding blocks 33 cooperate to crush the raw materials, and the combination of the conical heads 351 on the two sliding blocks 33 is curved, and the conical head 351 can extrude the material through its tip, thus performing secondary crushing on the raw materials.

[0045] An extrusion assembly 40 is provided inside the sliding block 33 for increasing the crushing strength of the conical head 351 on the raw materials.

[0046] The extrusion assembly 40 includes an extrusion member 41, a driving member 43, a lifting member 44, and a pulling-back assembly 45. The lifting member 44 cooperates with the pulling-back assembly 45 to drive the extrusion member 41 to grind the raw materials at the gap between two adjacent conical heads 351 through the driving member 43, thereby increasing the grinding strength of the raw materials.

[0047] The extrusion member 41 includes an inner cylinder 410 fixed to the inner wall of the conical head 351. A plurality of groups of extrusion blocks 411 are arranged on the inner cylinder 410. The extrusion blocks 411 from the root to the tip of the conical head 351 are arranged on the inner cylinder 410 from high to low. Each group of extrusion blocks 411 is composed of a plurality of extrusion units, and the plurality of extrusion units are arranged in a ring on the inner cylinder 410. The inner cylinder 410 is provided with a plurality of equally spaced first sliding openings 412 adapted to the extrusion blocks 411, and the extrusion blocks 411 are slidably connected inside the corresponding first sliding openings 412. The surface of the conical head 351 is provided with a plurality of equally spaced second sliding openings 413 adapted to the extrusion blocks 411, and the extrusion blocks 411 are slidably connected inside the corresponding second sliding openings 413.

[0048] An inner shaft 414 is rotatably connected to the inner wall of the inner cylinder 410. One end of the extrusion block 411 is fixed with a linkage block 415. A limiting shaft 416 is fixed to the surface of the linkage block 415. A limiting sliding rail 417 is installed on the inner shaft 414, and the limiting shaft 416 is slidably connected inside the limiting sliding rail 417, and the initial position of the limiting shaft 416 is at the bottom end of the limiting sliding rail 417.

[0049] The driving member 43 includes a first driving shaft 430 disposed inside the inner shaft 414. A slider 431 is fixed on the surface of the first driving shaft 430. A chute 432 adapted to the slider 431 is formed at one end of the inner shaft 414 facing the first driving shaft 430, and the slider 431 is slidably connected inside the chute 432. When the first driving shaft 430 rotates, it can drive the inner shaft 414 to rotate through the slider 431 and the chute 432, so as to drive the extrusion block 411 to slide out of the second sliding opening 413 to crush the raw material.

[0050] A sleeve 433 is sleeved on the surface of the end of the first driving shaft 430 away from the inner shaft 414. One side of the inner cylinder 410 facing the sleeve 433 has a central hole, and the sleeve 433 is located inside the central hole of the inner cylinder 410. A limiting block 434 is fixed on the surface of the first driving shaft 430. A limiting sliding opening 435 adapted to the limiting block 434 is formed on the surface of the sleeve 433, and the limiting block 434 is slidably connected inside the limiting sliding opening 435, and the limiting block 434 can slide horizontally inside the limiting sliding opening 435.

[0051] A linkage gear ring 436 is provided on the surface of the end of the sleeve 433 away from the first driving shaft 430. The linkage gear ring 436 is rotatably connected to the inner wall of the cavity 34. A plurality of lifting frames 437 arranged at equal intervals are provided on the sliding block 33. Each lifting frame 437 corresponds to a cavity 34. A linkage rack 438 is fixed on the inner wall of the lifting frame 437, and the linkage rack 438 is meshed with the linkage gear ring 436. A fixing plate 439 is fixed on the inner wall of the cavity 34. A receiving round hole is formed on the fixing plate 439, and the outer wall of the sleeve 433 is rotatably connected to the inner wall of the receiving round hole. A first end block 4310 and a second end block 4311 are fixed on one side of the inner cylinder 410.

[0052] The lifting member 44 includes a first top block 440 fixed on the top of the lifting frame 437. An opening adapted to the first top block 440 is formed on the sliding block 33, and the first top block 440 is slidably connected inside the opening. Linkage shafts 441 are fixed on both sides of the first top block 440. A plurality of grooves arranged at equal intervals are formed at the bottom of the material receiving shell 3101. Each groove corresponds to a first top block 440. A limiting sliding rail 417 is fixed on the inner wall of the groove, and the limiting shaft 416 is slidably connected inside the corresponding limiting sliding rail 417.

[0053] The pulling-back assembly 45 includes a positioning shaft 450 fixed to one side of the outer disc 350. A communication hole adapted to the positioning shaft 450 is formed in the fixing plate 439, and the positioning shaft 450 is slidably connected inside the corresponding communication hole. An annular wheel 451 is fixed to the surface of the positioning shaft 450. Side pushing blocks 452 are arranged on both sides of the lifting frame 437. The bottom end of one side of the side pushing block 452 away from the fixing plate 439 has a first arc surface, and the top end of the side of the side pushing block 452 facing the positioning shaft 450 has a second arc surface.

[0054] A receiving groove 453 is formed in the lifting frame 437, and the side pushing block 452 is slidably connected inside the receiving groove 453. A first return spring 454 is fixed to the inner wall of the receiving groove 453, and the side of the first return spring 454 away from the lifting frame 437 is fixed to one side wall of the side pushing block 452. A second return spring 455 is fixed between one side of the outer disc 350 and the fixing plate 439.

[0055] When the two sliding blocks 33 approach each other, the linkage shaft 441 slides from the top end to the bottom end of the linkage slideway 442, and the first top block 440 drives the lifting frame 437 to move downward. The lifting frame 437 drives the linkage gear ring 436 to rotate through the linkage rack 438, and the linkage gear ring 436 drives the sleeve 433 to rotate. At this time, the first drive shaft 430 slides from the first end block 4310 to the second end block 4311. The sleeve 433 drives the first drive shaft 430 to rotate through the limit block 434, and the first drive shaft 430 drives the inner shaft 414 to rotate through the slider 431.

[0056] Since when the limit shaft 416 is at the bottom end of the limit slide rail 417, the extrusion block 411 is located inside the second sliding opening 413, the second sliding opening 413 does not slide out of the conical head 351. As the inner shaft 414 rotates, the limit shaft 416 slides from the bottom end to the top end of the limit slide rail 417, and the limit shaft 416 drives the extrusion block 411 to slide out of the second sliding opening 413. Since multiple pressing heads 35 cooperate with each other to form a curve, and the extrusion block 411 sliding out of the second sliding opening 413 is located between the adjacent front and rear groups of extrusion blocks 411, the raw material is extruded and crushed. When the limit block 434 rotates to the second end block 4311, the inner cylinder 410 is driven to rotate through the second end block 4311, and the inner cylinder 410 drives the pressing head 35 to rotate. When the conical head 351 rotates, a shearing force in the rotation path is applied to the raw material to crush the raw material.

[0057] As the lifting frame 437 moves downward, the first arc surface at the bottom of the side pushing block 452 contacts the annular wheel 451. The annular wheel 451 then drives the positioning shaft 450 to slide to the side away from the fixed plate 439, and compresses the second return spring 455. The positioning shaft 450 drives the outer disc 350 to slide towards the fixed plate 439, so that the extrusion block 411 extending out of the second sliding port 413 can apply a lateral shearing force to the raw material, thereby increasing the degree of crushing of the raw material. When the lifting frame 437 moves downward and the annular wheel 451 disengages from the side pushing block 452, at this time the second return spring 455 is released from the limit and resets. The second return spring 455 drives the pressing head 35 to reset, and the impact force generated by the reset of the pressing head 35 will be transmitted to the surface of the raw material, thereby impacting the raw material.

[0058] When the sliding block 33 resets, the annular wheel 451 abuts against the second arc surface at the top of the side pushing block 452. The annular wheel 451 drives the side pushing block 452 to slide into the interior of the receiving groove 453, compresses the first return spring 454, and the above structure also resets. The raw materials that meet the filtration of the filter screen plate 32 after crushing continue to fall.

[0059] A driving assembly 60 is provided on the bearing box 31 for driving the sliding block 33 to slide, so as to perform secondary crushing on the raw material.

[0060] The driving assembly 60 includes a second top block 61 fixed on the top of the sliding block 33. A bottom groove is opened at the bottom of the feeding port 110, and a through hole communicating with the bottom groove is opened on the outer wall of the feeding port 110. A second driving shaft 62 is rotatably connected to the inner wall of the through hole. The second driving shaft 62 has a threaded section. A threaded groove is opened on the second top block 61, and the second top block 61 is threadedly connected to the threaded section through the threaded groove. One ends of the two second driving shafts 62 extending out of the sliding block 33 are commonly connected to a synchronous belt 63. A third driving source 64 is installed on the outer wall of the sliding block 33, and the output end of the third driving source 64 is fixed to one end of the second driving shaft 62.

[0061] When the output end of the third driving source 64 drives the connected second driving shaft 62 to rotate, due to the synchronous belt 63 restricting the two second driving shafts 62, at this time the two second driving shafts 62 can rotate synchronously, thereby driving the sliding block 33 to slide towards the center position of the bearing box 31 to crush the raw material.

[0062] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they 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 within the protection scope of the present invention.

Claims

1. A raw material crusher for refractory bricks, characterized in that: It includes a mounting base (10), on which a primary crushing body (11) is provided. The primary crushing body (11) has a through-feed port (110) and a discharge port (111). Raw materials are poured into the primary crushing body (11) through the feed port (110) for preliminary crushing and then discharged through the discharge port (111). A primary crushing assembly (20) is arranged inside the primary crushing body (11) and is used for preliminary crushing of raw materials. A secondary crushing assembly (30) is arranged at the bottom of the primary crushing body (11). The secondary crushing assembly (30) includes a bearing box (31) installed at the discharge port of the primary crushing body (11). A material receiving shell (3101) and a discharge shell (3102) are respectively provided at the top and bottom of the bearing box (31). A filter screen plate (32) is arranged inside the bearing box (31). Raw materials fall onto the surface of the filter screen plate (32) through the material receiving shell (3101) for screening and then are discharged through the discharge shell (3102). A sliding block (33) is installed inside the bearing box (31), and a pressing head (35) is arranged on the sliding block (33) and is used for secondary crushing of the raw materials staying on the surface of the filter screen plate (32). An extrusion assembly (40) is arranged on the sliding block (33) and is used to improve the crushing strength of raw materials.

2. The raw material crusher for refractory bricks according to claim 1, characterized in that: The pressing head (35) is composed of an outer disk (350) and a conical head (351). A cavity (34) and a limiting hole (36) corresponding to the pressing head (35) are formed on the sliding block (33), and the cavity (34) and the limiting hole (36) are communicated. The outer disk (350) is slidably connected inside the corresponding limiting hole (36).

3. The raw material crusher for refractory bricks according to claim 2, characterized in that: The extrusion assembly (40) includes an extrusion member (41), a driving member (43), a lifting member (44), and a pulling-back assembly (45). The lifting member (44) cooperates with the pulling-back assembly (45) to drive the extrusion member (41) through the driving member (43) to grind the raw materials at the gap between two adjacent conical heads (351).

4. The raw material crusher for refractory bricks according to claim 3, characterized in that: The extrusion member (41) includes an inner cylinder (410) fixed to the inner wall of the conical head (351). A plurality of groups of extrusion blocks (411) are arranged on the inner cylinder (410). The extrusion blocks (411) from the root to the tip of the conical head (351) are arranged on the inner cylinder (410) from high to low. Each group of extrusion blocks (411) is composed of a plurality of extrusion units, and the plurality of extrusion units are arranged in a ring on the inner cylinder (410). The inner cylinder (410) is provided with a plurality of first sliding openings (412) arranged at equal distances and adapted to the extrusion blocks (411), and the extrusion blocks (411) are slidably connected inside the corresponding first sliding openings (412). A plurality of second sliding openings (413) arranged at equal distances and adapted to the extrusion blocks (411) are formed on the surface of the conical head (351), and the extrusion blocks (411) are slidably connected inside the corresponding second sliding openings (413).

5. The raw material crusher for refractory bricks according to claim 4, wherein: The inner wall of the inner cylinder (410) is rotatably connected to an inner shaft (414). One end of the extrusion block (411) is fixed with a linkage block (415). The surface of the linkage block (415) is fixed with a limit shaft (416). A limit slide rail (417) is installed on the inner shaft (414), and the limit shaft (416) is slidably connected inside the limit slide rail (417), and the initial position of the limit shaft (416) is at the bottom end of the limit slide rail (417).

6. The raw material crusher for refractory bricks according to claim 5, characterized in that: The driving member (43) includes a first driving shaft (430) arranged inside the inner shaft (414). A slider (431) is fixed on the surface of the first driving shaft (430). A chute (432) adapted to the slider (431) is provided at one end of the inner shaft (414) facing the first driving shaft (430), and the slider (431) is slidably connected inside the chute (432).

7. The raw material crusher for refractory bricks according to claim 6, characterized in that: A sleeve (433) is sleeved on the surface of one end of the first driving shaft (430) away from the inner shaft (414). One side of the inner cylinder (410) facing the sleeve (433) has a central hole, and the sleeve (433) is located inside the central hole of the inner cylinder (410). A limit block (434) is fixed on the surface of the first driving shaft (430). A limit slide opening (435) adapted to the limit block (434) is provided on the surface of the sleeve (433), and the limit block (434) is slidably connected inside the limit slide opening (435), and the limit block (434) can slide horizontally inside the limit slide opening (435).

8. The raw material crusher for refractory bricks according to claim 7, characterized in that: A linkage gear ring (436) is provided on the surface of one end of the sleeve (433) away from the first driving shaft (430). The linkage gear ring (436) is rotatably connected to the inner wall of the cavity (34). A plurality of lifting frames (437) arranged at equal distances are provided on the sliding block (33). Each lifting frame (437) corresponds to a cavity (34). A linkage rack (438) is fixed on the inner wall of the lifting frame (437), and the linkage rack (438) is meshed with the linkage gear ring (436). A fixing plate (439) is fixed on the inner wall of the cavity (34). A receiving round hole is provided on the fixing plate (439), and the outer wall of the sleeve (433) is rotatably connected to the inner wall of the receiving round hole. A first end block (4310) and a second end block (4311) are fixed on one side of the inner cylinder (410).

9. The raw material crusher for refractory bricks according to claim 8, characterized in that: The lifting member (44) includes a first top block (440) fixed on the top of the lifting frame (437). An opening adapted to the first top block (440) is provided on the sliding block (33), and the first top block (440) is slidably connected inside the opening. Linkage shafts (441) are fixed on both sides of the first top block (440). A plurality of grooves arranged at equal distances are provided at the bottom of the material receiving shell (3101). Each groove corresponds to a first top block (440). A limit slide rail (417) is fixed on the inner wall of the groove, and the limit shaft (416) is slidably connected inside the corresponding limit slide rail (417).

10. The raw material crusher for refractory bricks according to claim 9, characterized in that: The pulling-back component (45) includes a positioning shaft (450) fixed to one side of the outer disc (350). A communication hole adapted to the positioning shaft (450) is formed in the fixing plate (439), and the positioning shaft (450) is slidably connected inside the corresponding communication hole. An annular wheel (451) is fixed to the surface of the positioning shaft (450). Side pushing blocks (452) are arranged on both sides of the lifting frame (437). The bottom end of one side of the side pushing block (452) away from the fixing plate (439) has a first arc surface, and the top end of one side of the side pushing block (452) facing the positioning shaft (450) has a second arc surface.

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