A compound crusher

Abstract

The present invention relates to the technical field of crushers, and specifically discloses a compound crusher, comprising: a casing, a crushing module provided in the casing, the crushing module including a bearing unit, the bearing unit including a crushing box provided in the casing, a feed box connected above the crushing box, the crushing module also including a crushing unit and a material guide unit; the crushing unit including a drive shaft rotating on the crushing box, a plurality of cutter discs fixedly installed on the drive shaft along its axial intervals, and a plurality of cutter head assemblies installed on each cutter disc along its circumference. The beneficial effects of the present invention are as follows: the material falling from the gap between the cutter disc and the cavity wall can be blocked, and the material can be continuously pushed downwards, the crushing knife below can fully crush the material that has been pushed downwards, effectively improving the crushing effect of the material, and at the same time, the material stuck between the crushing knife and the cutter disc can be effectively squeezed or discharged, avoiding the residue of the material.

Description

Technical Field

[0001] The present invention relates to the technical field of crushers, in particular to a compound crusher. Background Art

[0002] The compound crusher is a new type of fine crushing and coarse grinding product developed by integrating the technologies of similar crushers at home and abroad and optimizing the main technical parameters. It is mainly used for crushing cement raw materials and clinker in medium-sized cement plants, providing an ideal fine crushing equipment for the technical transformation of cement plants or the construction of new cement production lines. It is also suitable for the crushing of other medium-hard ores such as iron ore, sandstone, gypsum, blast furnace slag, coal gangue, lump coal, etc. It has the characteristics of large crushing ratio, low energy consumption, stable operation, simple structure, and easy operation and maintenance.

[0003] The Chinese patent with authorization announcement number CN117244638B discloses a compound crushing heavy-duty crusher, including a mounting platform, a crushing box fixedly connected to the mounting platform, and a feed pipe rotatably connected to the top of the crushing box. The compound crushing heavy-duty crusher drives the feed pipe and the first crushing column to rotate through a driving mechanism, and the stone is scattered from the spreading port. At the same time, the feed pipe drives the second crushing column to rotate through the first gear and the second gear, and the first crushing column and the second crushing column drive the first crushing rod and the second crushing rod to rotate. The second crushing block and the fourth crushing block on the first crushing rod and the second crushing rod crush the stone. At the same time, the stone hits the first crushing block, the third crushing block and the fifth crushing block on the first mounting plate, the second mounting plate and the third mounting plate to be crushed, so that the stone is repeatedly struck and crushed from top to bottom in the crushing box, thereby achieving full crushing of the stone and greatly improving the crushing effect of the stone.

[0004] During the operation of compound crushing equipment, due to inherent limitations in its mechanical design, gaps form between the core crushing components (including the cutterhead and crushing head) and the inner wall of the crushing chamber. This mechanical gap creates a material leakage path during the crushing operation, causing a large amount of processed material to be discharged directly through the gap without being fully sheared and ground. This not only results in substandard crushing particle size but also an imbalance in the equipment's energy consumption and output ratio. Summary of the Invention

[0005] The present invention provides a compound crusher, which aims to solve the technical problem in the related art that the mechanical gap between the crushing component and the inner wall of the crushing chamber forms a material leakage channel during the crushing operation, resulting in a large amount of to-be-processed material being directly discharged through the gap without being fully sheared and ground. This not only causes the material crushing particle size to fail to meet the standard, but also causes an imbalance in the energy consumption and output ratio of the equipment.

[0006] The present invention relates to a compound crusher, comprising: a casing, a crushing module arranged in the casing, the crushing module comprising a bearing unit, the bearing unit comprising a crushing box arranged in the casing, a feed box being connected above the crushing box, the crushing module further comprising a crushing unit and a material guide unit; the crushing unit comprises a driving shaft rotating in the crushing box, a plurality of cutter discs are fixedly mounted on the driving shaft along the axial direction thereof, a plurality of cutter head assemblies are mounted on each cutter disc along its circumference, the cutter head assembly comprises a sliding seat elastically slidingly assembled on the cutter disc along the radial direction of the cutter disc, a scraper is fixedly mounted on the sliding seat, and a scraper is fixedly mounted on the sliding seat. A crushing knife is also provided. The crushing knives on the two adjacent cutter discs are staggered with each other. The end of the crushing knife close to the center of the cutter disc is an inclined surface, and the inclined surface gradually approaches or moves away from the outer peripheral surface of the cutter disc from one end to the other in the horizontal direction; the material guiding unit includes a material retaining ring arranged at vertical intervals on the inner wall of the crushing box and corresponding to the cutter disc one by one. The material retaining ring corresponds to the gap between the cutter disc and the inner wall of the crushing box. The cross-section of the material retaining ring is stepped, and each step is provided with a plurality of protrusions at intervals along its circumference. The scraper on each cutter disc abuts against the steps on the material retaining ring in sequence along its circumference.

[0007] Beneficial effect: After the material falls on the steps on the retaining ring, as the scraper rotates, the material on the steps of the retaining ring will be scraped off. Since the crushing knives on the two adjacent upper and lower cutter discs are staggered, the material continuously scraped off by the scraper will be hit by the crushing knife rotating below, which can better crush the scraped material. The retaining ring is provided with multiple steps, so that the material is dispersed on different steps. Each scraper only scrapes the material on the corresponding step, which can reduce the amount of material scraped off by the scraper. Each scraper only scrapes off a part of the material, which can enable the crushing knife to fully crush the material, avoiding too much material scraped off by the scraper, resulting in the crushing knife being unable to fully crush it. During the rotation of the scraper, it will continuously pass by the protrusion. When the scraper abuts the protrusion, it will force the sliding seat to slide along the radial direction of the cutter disc, thereby realizing the reciprocating sliding of the crushing knife. There is a certain distance between the end of the crushing knife closest to the center of the cutter disc and the cutter disc, so that incompletely crushed materials may be stuck between the crushing knife and the cutter disc. When the sliding seat drives the crushing knife to move back and forth along the radial direction of the cutter disc, the materials stuck between the crushing knife and the cutter disc can be crushed, or the inclined surface of the crushing knife end can be used to squeeze the materials out. It can block the materials falling from the gap between the cutter disc and the cavity wall and continuously push the materials downward. The crushing knife below can fully crush the materials that fall, effectively improving the crushing effect of the materials. At the same time, it can also effectively crush or discharge the materials stuck between the crushing knife and the cutter disc to avoid the formation of material residues.

[0008] Preferably, a plurality of mounting rings are arranged at intervals along the vertical direction on the inner wall of the crushing box, the mounting rings and the retaining rings are arranged alternately, and teeth are evenly distributed along the circumference of the inner wall of the mounting ring, and the length direction of the teeth extends along the vertical direction.

[0009] The effect is that the teeth can make the crushing knife and the teeth cooperate to crush the material during the rotation of the crushing knife, thereby improving the crushing effect.

[0010] Preferably, the retaining ring and the mounting ring are both vertically slidably assembled in the crushing box.

[0011] The effect is that the installation and fixation of the mounting ring and the retaining ring are facilitated, and the mounting ring and the retaining ring only need to be placed into the crushing box one by one.

[0012] Preferably, the crushing knife is a parallelogram structure.

[0013] The top end of the sliding seat is fixed with a fixing cylinder with openings at both ends, and the crushing knife is provided with a perforation at the corresponding position of the fixed cylinder, and the fixing cylinder is inserted into the perforation of the crushing knife, and the crushing knife and the cutter disc slide up and down and cooperate with each other, and a slot is provided on the sliding seat, and a plug-in portion is provided on the bottom of the crushing knife, and a through plug-in portion is inserted into the slot, and a locking plate is horizontally slidably installed in the sliding seat, and a second spring is provided between the locking plate and the sliding seat. One end of the second spring is connected to the locking plate, and the other end is connected to the sliding seat. A locking block is provided on the locking plate, and the locking block penetrates into the slot, and the upper surface of the locking block is an inclined surface, and an abutment portion is provided on the locking plate corresponding to the fixed cylinder, and the abutment portion is inclined. A sliding rod is vertically elastically slidably fitted in the fixed cylinder, and a pressing portion is provided on the upper end of the slide rod, and a pushing block is fixedly connected to the lower end of the slide rod, and the bottom of the pushing block abuts against the abutment portion.

[0014] The effect is that the crushing knife will be severely worn after working for a long time, affecting the crushing effect, and the crushing knife needs to be replaced. The traditional replacement method requires removing the fixing bolts, which is time-consuming and labor-intensive. This method only requires pressing down the pressing part to remove the crushing knife.

[0015] Preferably, a driving motor is fixedly installed in the housing, a driving wheel is fixedly installed on the output end of the driving motor, a driven wheel is fixedly installed on the driving shaft, and the driving wheel and the driven wheel are connected by a transmission belt.

[0016] Preferably, a connecting pipe is fixedly installed at the bottom of the crushing box, and the connecting pipe is connected to the inside of the crushing box. There are two connecting pipes, and they are arc-shaped structures. The two connecting pipes are symmetrical on the left and right and are both coaxially arranged with the crushing box. A discharge pipe is fixedly installed at the lower end of the connecting pipe, and the connecting pipe is connected to the discharge pipe.

[0017] Preferably, a collecting box is provided in the casing, a feed port is provided above the collecting box, the feed port corresponds to the discharge pipe, and a collecting bucket is placed in the collecting box.

[0018] The effect is that the crushed materials fall into the collection bucket, which makes it easy to collect the crushed materials.

[0019] Preferably, the feed box has an inverted U-shaped structure, and the feed box has a horizontally arranged feed cavity and two vertically arranged drop cavity. A feeding port is provided above the feed cavity, and the two drop cavity are spaced apart along the left and right directions. Through holes are provided at positions corresponding to the two drop cavity on the upper surface of the crushing box, and the drop cavity is connected to the interior of the crushing box through the through holes.

[0020] Preferably, the protrusion is an arc-shaped structure.

[0021] By adopting the above technical solution, the beneficial effects of the present invention are as follows: after the material falls on the step on the retaining ring, as the scraper rotates, the material on the step of the retaining ring will be scraped off. Since the crushing knives on the two upper and lower adjacent cutter discs are staggered, the material continuously scraped off by the scraper will be hit by the crushing knives rotating below, which can better crush the scraped material. The retaining ring is provided with multiple steps, so that the material is dispersed on different steps. Each scraper only scrapes the material on the corresponding step, which can reduce the amount of material scraped off by the scraper. Each scraper only scrapes off a part of the material, which can enable the crushing knife to fully crush the material, and avoid the scraper scraping off too much material, which makes the crushing knife unable to fully crush it. During the rotation of the scraper, it will continuously pass by the protrusion. When the scraper abuts the protrusion, it will force the sliding seat to slide radially along the cutter disc, thereby realizing the reciprocating sliding of the crushing knife. There is a certain distance between the end of the crushing knife closest to the center of the cutter disc and the cutter disc, so that incompletely crushed materials may be stuck between the crushing knife and the cutter disc. When the sliding seat drives the crushing knife to move back and forth along the radial direction of the cutter disc, the materials stuck between the crushing knife and the cutter disc can be crushed, or the inclined surface of the crushing knife end can be used to squeeze the materials out. It can block the materials falling from the gap between the cutter disc and the cavity wall and continuously push the materials downward. The crushing knife below can fully crush the materials that fall, effectively improving the crushing effect of the materials. At the same time, it can also effectively crush or discharge the materials stuck between the crushing knife and the cutter disc to avoid the formation of material residues. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0023] Figure 2 It is a cross-sectional view of the present invention.

[0024] Figure 3 For the present invention Figure 2 Enlarged view of point A in the middle.

[0025] Figure 4 For the present invention Figure 2 Enlarged view of point B in the middle.

[0026] Figure 5It is an exploded schematic diagram of the crushing box and the mounting ring of the present invention.

[0027] Figure 6 It is an exploded schematic diagram of the mounting ring and the drive shaft of the present invention.

[0028] Figure 7 It is a top view of the cutter head of the present invention.

[0029] Figure 8 It is a structural schematic diagram of the retaining ring of the present invention.

[0030] Figure 9 It is an exploded schematic diagram of the crushing knife and the sliding seat of the present invention.

[0031] Figure 10 It is an exploded schematic diagram of the sliding seat, locking plate and sliding seat of the present invention.

[0032] Reference numerals:

[0033] 10. Casing; 11. Observation window; 12. Cover plate; 13. Carrier frame; 14. Mounting frame; 15. Driving motor; 16. Driving wheel; 20. Crushing box; 21. Feed box; 22. Connecting pipe; 23. Discharge pipe; 24. Mounting ring; 25. Teeth; 26. Baffle ring; 27. Bump; 30. Driving shaft; 31. Driven wheel; 32. Cutter head; 40. Sliding seat; 41. First spring; 42. Scraper; 43. Fixed cylinder; 44. Slot; 50. Crushing knife; 51. Connecting part; 52. Socket; 60. Locking plate; 61. Second spring; 62. Locking block; 63. Abutting part; 64. Sliding rod; 65. Third spring; 66. Pressing part; 67. Pushing block; 70. Collection box; 71. Protective door; 72. Feed port; 73. Collection bucket. DETAILED DESCRIPTION

[0034] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0035] like Figures 1 to 10 As shown, a specific embodiment of a compound crusher of the present invention includes a casing 10, a driving module, a crushing module and a collecting module.

[0036] The driving module, the crushing module and the collecting module are all installed in the housing 10. The driving module is used to provide power to the crushing module, and the collecting module is used to collect the materials crushed by the crushing module.

[0037] like Figure 1 and Figure 2As shown, the casing 10 is a square structure, and an observation window 11 is installed on the front side of the casing 10. The observation window 11 corresponds to the position of the crushing module, so as to facilitate observation of the working condition of the device and facilitate maintenance of the device. A feeding port is provided at the connection between the upper surface and the front side of the casing 10, which is used to add materials to be crushed into the crushing module, and a cover plate 12 is detachably installed at the feeding port. In this embodiment, the cover plate 12 can be installed on the casing 10 by bolts or magnets. In other embodiments, it can also be installed by other methods. That is, when it is necessary to add materials to the crushing module, the cover plate 12 is opened, and the materials are added into the crushing module through the feeding port. When the material addition is completed and the crushing work begins, the cover plate 12 can be closed. A carrier frame 13 is provided inside the casing 10. The carrier frame 13 is used to install the drive module, the crushing module and the collection module.

[0038] like Figure 2 As shown, the crushing module and the drive module are mounted on the upper surface of a carrier frame 13, spaced apart from each other. The drive module includes a mounting frame 14 fixedly mounted on the carrier frame 13 and connected to the carrier frame 13 via fixing bolts. A drive motor 15 is fixedly mounted on the mounting frame 14, and a driving wheel 16 is fixedly mounted on the output end of the drive motor 15, with the axis of the driving wheel 16 extending in the vertical direction.

[0039] like Figures 3 to 10 As shown, the crushing module includes a bearing unit, a crushing unit, a material guiding unit and a fixing unit. The bearing unit includes a crushing box 20, a feed box 21, a connecting pipe 22 and a discharge pipe 23.

[0040] The crushing box 20 is fixedly mounted on the upper surface of the carrier frame 13. The crushing box 20 has a cylindrical structure, and the axis of the crushing box 20 extends in the vertical direction. A feed box 21 is fixedly mounted on the upper surface of the crushing box 20. The feed box 21 is connected to the interior of the crushing box 20 and has an inverted U-shaped structure. The feed box 21 has a horizontally arranged feed chamber and two vertically arranged drop chambers. A feeding port is provided above the feed chamber, and the feeding port faces the feeding port on the casing 10, so that material can be dropped into the feed box 21 through the feeding port on the casing 10. The two drop chambers are spaced apart in the left-right direction. Through holes are opened on the upper surface of the crushing box 20 at positions corresponding to the two drop chambers. The drop chambers are connected to the interior of the crushing box 20 through the through holes.

[0041] A connecting pipe 22 is fixedly mounted at the bottom of the crushing box 20 and communicates with the crushing box 20. In this embodiment, two connecting pipes 22 are provided, each of which is an arc-shaped structure. The two connecting pipes 22 are symmetrical and coaxially arranged with the crushing box 20. A discharge pipe 23 is fixedly mounted at the lower end of the connecting pipe 22 and communicates with the discharge pipe 23. The material inside the crushing box 20, after being crushed by the crushing units, enters the discharge pipe 23 through the connecting pipe 22 and is finally discharged from the discharge pipe 23 into the collection module.

[0042] like Figure 5 、 Figure 6 、 Figure 7 、 Figure 9 as well as Figure 10 As shown, the crushing unit includes a driving shaft 30 , a driven wheel 31 , a cutter disc 32 , a sliding seat 40 , a first spring 41 , a scraper 42 and a crushing knife 50 .

[0043] A drive shaft 30 is rotatably mounted within the crushing box 20. The axis of the drive shaft 30 extends vertically, and the upper end of the drive shaft 30 passes through the upper surface of the crushing box 20 and extends above the crushing box 20. A driven pulley 31 is fixedly mounted on the upper end of the drive shaft 30. The driven pulley 31 is connected to the driving pulley 16 via a transmission belt (not shown). Therefore, when the drive motor 15 rotates the driving pulley 16, the driving pulley 16 rotates the driven pulley 31, which in turn drives the drive shaft 30 to rotate.

[0044] Multiple cutter discs 32 are fixedly mounted at intervals along the vertical axis of the drive shaft 30. These discs are coaxially arranged with the drive shaft 30. Each cutter disc 32 is circumferentially mounted with multiple cutter head assemblies, which crush the material as it rotates. In this embodiment, four cutter discs 32 are mounted on the drive shaft 30. This means that as the material falls, the cutter head assemblies on each cutter disc 32 perform a primary crushing operation. Once the material enters the crushing chamber 20, it undergoes four stages of crushing, ensuring sufficient material pulverization.

[0045] Each cutter head assembly includes a sliding seat 40 that slides radially along the cutter disc 32 and is assembled thereon. A slot is defined on the cutter disc 32 that matches the sliding seat 40, and the sliding seat 40 is slidably assembled thereon via the slot. A first spring 41 is connected between the sliding seat 40 and the cutter disc 32. Specifically, one end of the first spring 41 is fixedly connected to the sliding seat 40, and the other end of the first spring 41 is fixedly connected to the cutter disc 32, thereby providing an elastic force to return the sliding seat 40 to its original position.

[0046] A scraper 42 is fixedly mounted on the lower surface of the sliding seat 40 near the moving end, and the length direction of the scraper 42 extends in the vertical direction. A crushing knife 50 is mounted on the sliding seat 40. In this embodiment, Figure 7 As shown, the crushing knife 50 has a parallelogram structure, and the two end faces of the crushing knife 50 located in the radial direction of the cutter disc 32 are both inclined surfaces, both end faces are perpendicular to the cutter disc 32, and the two end faces gradually approach or move away from the outer peripheral edge of the cutter disc 32 from one end to the other in the horizontal direction.

[0047] There is a certain distance between the end of the crushing knife 50 close to the center of the cutter disc 32 and the cutter disc 32, so that incompletely crushed materials may be stuck between the crushing knife 50 and the cutter disc 32. When the sliding seat 40 drives the crushing knife 50 to move back and forth continuously along the radial direction of the cutter disc 32, the material stuck between the crushing knife 50 and the cutter disc 32 can be crushed, or the material can be squeezed out by using the inclined surface of this end of the crushing knife 50.

[0048] It is particularly noted that the crushing knives 50 on the two adjacent cutter discs 32 are staggered, that is, the crushing knife 50 on the lower cutter disc 32 corresponds to the position between the two crushing knives 50 on the upper cutter disc 32.

[0049] In this embodiment, the cutter head assemblies on the three upper cutter discs 32 are all the same, but the cutter head assembly on the fourth cutter disc 32 located at the bottom can be a traditional cutter head or a sliding seat 40 fixedly mounted on the cutter disc 32. The crushing knife 50 is fixedly mounted on the sliding seat 40, and no scraper 42 is installed on the sliding seat 40, which will be described in detail later.

[0050] like Figure 3 、 Figure 5 、 Figure 6 、 Figure 7 ,as well as Figure 8 As shown, the material guiding unit includes a mounting ring 24 , teeth 25 , a blocking ring 26 and a protrusion 27 .

[0051] Multiple mounting rings 24 and retaining rings 26 are installed within the crushing box 20. Both mounting rings 24 and retaining rings 26 are annular in structure and have the same outer diameter. In this embodiment, there are four mounting rings 24 and three retaining rings 26, and the mounting rings 24 and retaining rings 26 are arranged alternately, that is, the mounting rings 24 and retaining rings 26 are connected end to end.

[0052] In this embodiment, the mounting ring 24 and the retaining ring 26 are slidably assembled on the inner wall of the crushing box 20, that is, a vertically arranged track is provided on the inner wall of the crushing box 20, and a vertically arranged slide groove is provided on the outer wall of the mounting ring 24 and the retaining ring 26 at a position corresponding to the track. The mounting ring 24 and the retaining ring 26 are vertically slidably installed in the crushing box 20 by sliding with the slide groove and the track. This method facilitates the installation and fixation of the mounting ring 24 and the retaining ring 26. It is only necessary to place the mounting ring 24 and the retaining ring 26 into the crushing box 20 one by one.

[0053] There is a certain distance between the crushing knife 50 and the cutter disc 32 and the inner wall of the mounting ring 24. The gap between the cutter disc 32 and the inner wall of the mounting ring 24 can ensure the normal rotation of the cutter disc 32, and the gap between the cutter disc 32 and the mounting ring 24 can ensure the falling of materials.

[0054] Teeth 25 are evenly distributed along the circumference of the inner wall of the mounting ring 24, and the length direction of the teeth 25 extends in the vertical direction. The teeth 25 can enable the crushing knife 50 to cooperate with the teeth 25 to crush the material during the rotation of the crushing knife 50, thereby improving the crushing effect.

[0055] The three retaining rings 26 are respectively arranged in correspondence with the three cutter discs 32 above, and the retaining rings 26 are located below the corresponding cutter discs 32, that is, the retaining rings 26 can block the gap between the cutter discs 32 and the inner wall of the mounting ring 24. When the material falls onto the retaining ring 26, the retaining ring 26 can drop the material inward, and the material will fall onto the crushing knife 50 below for crushing, and then fall onto the retaining ring 26 below, and the cycle will continue.

[0056] like Figure 8 As shown, the cross section of the retaining ring 26 is a stepped structure, and in this embodiment, the retaining ring 26 has two steps. In other embodiments, the retaining ring 26 may have more steps. Each step of the retaining ring 26 is provided with a plurality of protrusions 27 spaced along its circumference, and the protrusions 27 are arc-shaped structures.

[0057] The multiple scrapers 42 on the cutter head 32 abut against the two steps on the retaining ring 26 alternately along its circumference, that is, one scraper 42 abuts against the first step and one scraper 42 abuts against the second step along its circumference, and the two scrapers 42 alternate in this manner.

[0058] After the material falls on the step on the retaining ring 26, the material on the step of the retaining ring 26 will be scraped off as the scraper 42 rotates. Since the crushing knives 50 on the two adjacent cutter discs 32 are staggered, the material continuously scraped off by the scraper 42 will be hit by the crushing knife 50 rotating below, which can better crush the scraped material.

[0059] The retaining ring 26 is provided with multiple layers of steps so that the material is dispersed on different steps. Each scraper 42 only scrapes the material on the corresponding step, which can reduce the amount of material scraped off by the scraper 42. Each scraper 42 only scrapes off a part of the material, which can enable the crushing knife 50 to fully crush the material, and avoid the scraper 42 scraping off too much material, which makes the crushing knife 50 unable to fully crush it.

[0060] During the rotation of the scraper 42 , it will continuously pass by the protrusion 27 . When the scraper 42 abuts against the protrusion 27 , it will force the sliding seat 40 to slide radially along the cutter disc 32 , thereby achieving reciprocating sliding of the crushing knife 50 .

[0061] Since there are three retaining rings 26, the material on the lowest retaining ring 26 falls onto the fourth cutter disc 32 at the bottom, and after being crushed by the cutter head assembly on the fourth cutter disc 32, the material falls and is discharged. Therefore, the fourth cutter disc 32 is not provided with a corresponding retaining ring 26, that is, the cutter head assembly on the fourth cutter disc 32 at the bottom can be a traditional cutter head.

[0062] During operation, the material is added to the feed box 21, and then the material enters the crushing box 20. The material is first crushed by the uppermost crushing knife 50, and then the crushed material falls from the gap between the cutter disc 32 and the mounting ring 24 to the step on the corresponding baffle ring 26. As the scraper 42 rotates, the material on the step of the baffle ring 26 will be scraped off. Since the crushing knives 50 on the two adjacent cutter discs 32 are staggered, the material continuously scraped off by the scraper 42 will be hit by the crushing knife 50 rotating below, which can better crush the scraped material.

[0063] The retaining ring 26 is provided with multiple steps, so that the material is dispersed on different steps. The multiple scrapers 42 on the cutter head 32 alternately contact two steps on the retaining ring 26 along its circumference. Each scraper 42 only scrapes the material on the corresponding step, which can reduce the amount of material scraped off by the scraper 42. Each scraper 42 only scrapes off a portion of the material, allowing the crushing blade 50 to fully crush the material, avoiding excessive material scraped off by the scraper 42, which would prevent the crushing blade 50 from being able to fully crush the material. The material continues to fall in this manner, and after being crushed by the multiple layers of crushing blades 50, it falls through the discharge pipe 23.

[0064] As the scraper 42 rotates, it continuously passes over the bumps 27. When the scraper 42 abuts against the bumps 27, it forces the sliding seat 40 to slide radially along the cutter disc 32, thereby enabling the reciprocating sliding of the crushing blade 50. There is a certain distance between the end of the crushing blade 50 closest to the center of the cutter disc 32 and the cutter disc 32, so that incompletely crushed material may become stuck between the crushing blade 50 and the cutter disc 32. As the sliding seat 40 drives the crushing blade 50 to continuously reciprocate radially along the cutter disc 32, the material stuck between the crushing blade 50 and the cutter disc 32 can be crushed, or the inclined surface of the end of the crushing blade 50 can be used to squeeze the material out.

[0065] like Figure 4 As shown, in other embodiments, the blanking surface of the bottom retaining ring 26 is an inclined surface, and the sliding seat 40 on the third-stage cutter disc 32 is fixedly mounted on the cutter disc 32. The bottom of the scraper 42 on the sliding seat 40 is an inclined surface, and the bottom of the scraper 42 abuts against the inclined surface on the retaining ring 26. When the scraper 42 rotates, the material remaining on the retaining ring 26 can be scraped off and dropped onto the fourth-stage cutter disc 32 for crushing. After the material has been crushed at three levels, it has basically reached a qualified particle size. Therefore, the retaining ring 26 and the third-stage cutter disc 32 at the bottom adopt this method, which is relatively simple in structure and can further reduce production costs.

[0066] like Figure 9 and Figure 10 As shown, the fixing unit includes a fixing cylinder 43 , an inserting portion 51 , a locking plate 60 , a second spring 61 , a locking block 62 , an abutting portion 63 , a sliding rod 64 , a third spring 65 , a pressing portion 66 and a pushing block 67 .

[0067] A fixing cylinder 43 is fixedly installed on the upper surface of the sliding seat 40. The axis of the fixing cylinder 43 extends in the vertical direction, and the interior of the fixing cylinder 43 is a hollow structure that passes through from top to bottom. A through-hole is provided on the crushing knife 50 at a position corresponding to the fixing cylinder 43. The fixing cylinder 43 is inserted into the through-hole of the crushing knife 50. At the same time, the crushing knife 50 and the cutter disc 32 slide up and down to fix the crushing knife 50.

[0068] The sliding seat 40 is provided with a slot 44, and the bottom of the crushing blade 50 is provided with an inserting portion 51, which has a through-hole 52 and is inserted into the slot 44. A locking plate 60 is horizontally slidably mounted within the sliding seat 40, and a second spring 61 is provided between the locking plate 60 and the sliding seat 40. That is, one end of the second spring 61 is connected to the locking plate 60 and the other end is connected to the sliding seat 40, so that the second spring 61 can provide elastic force to reset the locking plate 60.

[0069] A locking block 62 is provided on the locking plate 60, which is inserted into the slot 44, and the upper surface of the locking block 62 is an inclined surface. When the plug-in portion 51 is inserted into the slot 44, the locking block 62 will be inserted into the socket 52 to complete the locking of the crushing knife 50.

[0070] An abutment portion 63 is provided on the locking plate 60 at a position corresponding to the fixed cylinder 43. The abutment portion 63 is arranged at an angle. A slide bar 64 is vertically slidably engaged within the fixed cylinder 43. A pressing portion 66 is provided at the upper end of the slide bar 64, and a push block 67 is fixedly connected to the lower end of the slide bar 64. The bottom of the push block 67 abuts against the abutment portion 63. A third spring 65 is sleeved on the outer side of the slide bar 64. One end of the third spring 65 is connected to the fixed cylinder 43, and the other end is connected to the pressing portion 66, so that the third spring 65 can provide elastic force to reset the slide bar 64.

[0071] When the crushing blade 50 needs to be removed, the pressing portion 66 is pressed downward, and the slide bar 64 drives the pushing block 67 downward. The pushing block 67 pushes the locking plate 60 to slide, causing the locking block 62 to disengage from the insertion hole 52, thereby easily removing the crushing blade 50. After long-term operation, the crushing blade 50 will be severely worn, affecting the crushing effect, and the crushing blade 50 needs to be replaced. Traditional replacement methods require removing the fixing bolts, which is time-consuming and labor-intensive. In this method, the crushing blade 50 can be removed by simply pressing the pressing portion 66 downward.

[0072] like Figure 2 As shown, the collection module includes a collection box 70, a protective door 71, and a collection bucket 73. The collection box 70 is fixedly mounted on the carrier 13. A feed port 72 is provided above the collection box 70. The feed port 72 corresponds to the discharge pipe 23. The crushed material passes through the discharge pipe 23 and the feed port 72 and enters the collection box 70. A collection bucket 73 is placed in the collection box 70. After passing through the feed port 72, the material falls into the collection bucket 73, completing the collection of the crushed material.

[0073] The front side of the collection box 70 is an open structure. A protective door 71 is installed at a position corresponding to the collection box 70 on the front side of the housing 10. The collection barrel 73 can be taken out and replaced by opening the protective door 71.

[0074] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A compound crusher comprising: A casing, wherein a crushing module is provided in the casing, the crushing module includes a bearing unit, the bearing unit includes a crushing box provided in the casing, and a feed box is connected above the crushing box. The crushing module is characterized in that it also includes a crushing unit and a material guide unit; The crushing unit includes a drive shaft that rotates in the crushing box, and a plurality of cutter discs are fixedly installed on the drive shaft along the axial direction thereof at intervals. A plurality of cutter head assemblies are installed on each cutter disc along the circumference thereof. The cutter head assembly includes a sliding seat that is elastically slidably assembled on the cutter disc along the radial direction of the cutter disc, a scraper is fixed on the sliding seat, and a crushing knife is also provided on the sliding seat. The crushing knives on the two adjacent cutter discs are staggered with each other, and the end of the crushing knife close to the center of the cutter disc is an inclined surface, and the inclined surface gradually approaches or moves away from the outer circumference of the cutter disc from one end to the other in the horizontal direction; The material guide unit includes a material retaining ring which is arranged at vertical intervals on the inner wall of the crushing box and corresponds one to one with the cutter disc. The material retaining ring corresponds to the gap between the cutter disc and the inner wall of the crushing box. The cross-section of the material retaining ring is stepped, and each step is provided with a plurality of protrusions at intervals along its circumference. The scraper on each cutter disc abuts against the steps on the material retaining ring in sequence along its circumference.

2. A compound crusher according to claim 1, characterized in that: A plurality of mounting rings are arranged at intervals along the vertical direction on the inner wall of the crushing box. The mounting rings and the retaining rings are arranged alternately. Teeth are evenly distributed on the inner wall of the mounting ring along its circumference, and the length direction of the teeth extends along the vertical direction.

3. A compound crusher according to claim 2, characterized in that: The blocking ring and the mounting ring are both vertically slidably assembled in the crushing box.

4. A compound crusher according to claim 1, characterized in that: The crushing knife is a parallelogram structure.

5. A compound crusher according to claim 1, characterized in that: The top end of the sliding seat is provided with a locking plate, and the locking plate is inserted into the slot, and the bottom end of the sliding seat is fixed with a locking block, and the locking block penetrates into the slot, and the upper surface of the locking block is an inclined surface, and an abutment portion is provided on the locking plate at the corresponding position of the fixed cylinder, and the abutment portion is inclined, and a sliding rod is vertically elastically slidably fitted in the fixed cylinder, and a pressing portion is provided on the upper end of the slide rod, and a pushing block is fixedly connected to the lower end of the slide rod, and the bottom of the pushing block abuts against the abutment portion.

6. A compound crusher according to any one of claims 1 to 5, characterized in that: A driving motor is fixedly installed in the casing, a driving wheel is fixedly installed on the output end of the driving motor, a driven wheel is fixedly installed on the driving shaft, and the driving wheel and the driven wheel are connected through a transmission belt.

7. A compound crusher according to claim 6, characterized in that: A connecting pipe is fixedly installed at the bottom of the crushing box, which is connected to the inside of the crushing box. There are two connecting pipes, which are arc-shaped structures. The two connecting pipes are symmetrical and coaxial with the crushing box. A discharge pipe is fixedly installed at the lower end of the connecting pipe, and the connecting pipe is connected to the discharge pipe.

8. A compound crusher according to claim 7, characterized in that: A collecting box is provided in the casing, a feed port is provided above the collecting box, the feed port corresponds to the discharge pipe, and a collecting bucket is placed in the collecting box.

9. A compound crusher according to claim 8, characterized in that: The feed box has an inverted U-shaped structure, and has a horizontally arranged feed cavity and two vertically arranged blanking cavities. A feeding port is provided above the feed cavity, and the two blanking cavities are arranged at intervals along the left and right directions. Through holes are provided on the upper surface of the crushing box at positions corresponding to the two blanking cavities, and the blanking cavities are connected to the interior of the crushing box through the through holes.

10. A compound crusher according to claim 1, characterized in that: The convex block is an arc-shaped structure.

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