A silica tailings crushing device for casting

Abstract

The present invention provides a crushing device for silica tailings used in casting, which relates to the technical field of tailings crushing. The crushing device for silica tailings used in casting includes a support platform and a cone crusher. The cone crusher is fixedly installed on the top of the support platform. A blanking port is formed in the top of the support platform. A pre-crushing treatment box is arranged above the cone crusher. A covering hood is arranged on the top of the pre-crushing treatment box. A bearing partition plate is fixedly installed in the pre-crushing treatment box. A plurality of fixed crushing rods are fixedly installed on the top of the bearing partition plate. A plurality of discharge ports are formed in the bearing partition plate. The plurality of fixed crushing rods and the plurality of discharge ports are staggered. A falling counterweight seat is arranged in the covering hood. A plurality of movable main crushing rods and a plurality of movable auxiliary crushing rods are fixedly installed at the bottom of the falling counterweight seat. The present invention has the advantages of being able to perform pre-crushing treatment on large-volume silica, improving the crushing efficiency, and being able to recover silica powder.

Description

Technical Field

[0001] The present invention relates to the technical field of tailings crushing, and particularly to a silica tailings crushing device for casting. Background Art

[0002] Silica is the general term for vein quartz, quartzite, and quartz sandstone, and its main component is silicon dioxide. Due to its good physical and chemical properties, it is widely used in many fields. In the casting field, high-silica molding sand usually has good fluidity and plasticity, which is very important for the casting process. The molding sand can flow in the mold and fill small voids to ensure the shape and accuracy of the casting. Moreover, the thermal expansion coefficient of high-silica sand matches that of many metals, avoiding cracking or deformation during the cooling process. The similar thermal expansion coefficients of the molding sand and the casting metal contribute to the dimensional stability of the casting. During the mining and separation process of silica, a part of tailings is produced. Most of these tailings have a low content of useful target components, so most of them do not meet the production and use standards and are screened out. With the progress and development of science and technology, people have realized that tailings still have certain recycling value. Therefore, when processing tailings subsequently, crushers are used to crush them, turning them from large volumes into small-sized stones suitable for production operations.

[0003] At present, common crushers are mostly cone crushers or jaw crushers. The former has a large crushing ratio, high efficiency, low energy consumption, and uniform product particle size, and is suitable for medium and fine crushing of various ores and rocks. Therefore, it is widely used in the ore crushing industry. However, it is found that when using such cone crushers, since most of the silica in the silica tailings is still in a large volume state, it is limited by the fixed crushing space during each crushing, and only a small amount of silica can be crushed at a time, resulting in a small amount of crushed material per time and reducing the crushing efficiency. Moreover, during the entire crushing and stone discharging process, a large amount of dust with silica powder is generated. These dusts drift with the wind. On the one hand, it reduces the air quality of the working environment. On the other hand, the silica powder with recycling value is wasted, making the resource utilization not thorough enough.

[0004] Therefore, it is necessary to provide a silica tailings crushing device for casting to solve the above technical problems. Summary of the Invention

[0005] The purpose of the present invention is to provide a silica tailings crushing device for casting that can pre-crush large-volume silica to improve the crushing efficiency and can recover silica powder.

[0006] To solve the above technical problems, the silica tailings crushing device for casting provided by the present invention includes: a support platform and a cone crusher. The cone crusher is fixedly installed on the top of the support platform. A blanking port is formed in the top of the support platform. A pre-crushing treatment box is arranged above the cone crusher. A covering cover is arranged on the top of the pre-crushing treatment box. A bearing partition board is fixedly installed in the pre-crushing treatment box. A plurality of fixed crushing rods are fixedly installed on the top of the bearing partition board. A plurality of discharge ports are formed in the bearing partition board. The plurality of fixed crushing rods and the plurality of discharge ports are staggered. A falling weight seat is arranged in the covering cover. A plurality of active main crushing rods and a plurality of active secondary crushing rods are fixedly installed at the bottom of the falling weight seat. The plurality of active main crushing rods and the plurality of active secondary crushing rods are staggered, and the plurality of active main crushing rods respectively correspond to the plurality of fixed crushing rods. Two guiding columns are fixedly installed on the top of the falling weight seat. The tops of the two guiding columns both extend above the covering cover and are slidably connected to the covering cover, and lifting pieces are fixedly installed at the tops of the two guiding columns. A lifting mechanism is arranged on the top of the covering cover for lifting the falling weight seat. A first horizontal pipe is arranged on one side of the cone crusher. A second horizontal pipe is arranged below the support platform. The first horizontal pipe corresponds to the top of the cone crusher. The second horizontal pipe corresponds to the lower part of the blanking port. Three flared pipes are fixedly installed on both the first horizontal pipe and the second horizontal pipe. A C-shaped pipe is fixedly installed on the first horizontal pipe and the second horizontal pipe. A side frame plate is fixedly installed on the top of the support platform. A first cover and a second cover are arranged on the side of the side frame plate away from the cone crusher. A suction fan is arranged on the side of the second cover away from the side frame plate. The air inlet end of the suction fan is fixedly connected to the second cover. One end of a corrugated pipe is fixedly installed on the side of the first cover close to the side frame plate. The other end of the corrugated pipe is fixedly installed on one end of a ventilation pipe. The other end of the ventilation pipe is fixedly connected to the C-shaped pipe. The ventilation pipe penetrates through the side frame plate. Filter chambers, a first collection chamber and a second collection chamber are formed on both the first cover and the second cover. The filter chamber is located between the first collection chamber and the second collection chamber. The suction fan is communicated with the filter chamber. A connection frame is arranged between the first cover and the second cover. Two dust filters are fixedly installed on the connection frame.

[0007] Preferably, a first station plate and a second station plate are fixedly installed at the bottom of the support table, a folded connecting plate is fixedly installed at the top of the support table, the top of the folded connecting plate is fixedly connected to the pre-crushing treatment box, vibrating rods are arranged in both the first collection chamber and the second collection chamber located within the second cover, two pull rods are slidably installed on the side of the second cover away from the first cover, ring plates are fixedly installed at one ends of the two vibrating rods close to the pull rods, return springs are sleeved on the two pull rods, one ends of the two return springs close to the first cover are respectively fixedly connected to the two ring plates, and the other ends of the two return springs away from the first cover are respectively fixedly connected to one side inner walls of the first collection chamber and the second collection chamber.

[0008] Preferably, a connecting cross plate is movably arranged at the top of the side frame plate, a second cylinder is fixedly installed on the side of the side frame plate close to the cone crusher, the output shaft of the second cylinder is fixedly connected to the connecting cross plate, a connecting plate is fixedly installed at the top of the connecting cross plate, a cross beam is fixedly installed at the top of the connecting plate, a central shaft is rotatably installed at the bottom of the cross beam, a horizontal connecting arm is fixedly installed on the central shaft, one side of the horizontal connecting arm is fixedly connected to the covering hood, a first servo motor is fixedly installed at the top of the cross beam, the output shaft of the first servo motor is fixedly connected to the top end of the central shaft, and an adaptation slot is formed in the connecting plate for the covering hood and the rectangular frame to rotate and shuttle through.

[0009] Preferably, the lifting mechanism includes a rectangular frame fixedly installed on the top of the covering hood, a lifting lead screw is rotatably installed in the rectangular frame, a lifting cross table is threadedly installed on the lifting lead screw, two vertical plates are fixedly installed at the top of the lifting cross table, first cylinders are fixedly installed on one sides of the two vertical plates close to each other, the output shafts of the two first cylinders respectively penetrate through the two vertical plates and are movably connected to the corresponding vertical plates, and lifting convex heads are fixedly installed on the output shafts of the two first cylinders, the tops of the two lifting convex heads respectively contact the bottoms of the two pulling pieces, and a second servo motor is fixedly installed at the top of the rectangular frame, and the output shaft of the second servo motor is fixedly connected to the top end of the lifting lead screw.

[0010] Preferably, a rodless cylinder is fixedly installed on the side of the side frame plate away from the cone crusher, a connecting strip is fixedly installed on the slider of the rodless cylinder, the connecting strip is fixedly connected to the top of the connecting frame, two installation openings are formed in the connecting frame, the two dust filter nets are respectively fixedly installed in the two installation openings, and the two installation openings are respectively adapted to the filtering chamber and the second collection chamber.

[0011] Preferably, a first load-bearing platform is fixedly installed on the side of the side frame plate away from the cone crusher. The bottom of the exhaust fan is fixedly connected to the first load-bearing platform. Two third cylinders are fixedly installed on the top of the first load-bearing platform. Linkage blocks are fixedly installed on the output shafts of the two third cylinders. The tops of the two linkage blocks are respectively fixedly connected to the first cover and the second cover.

[0012] Preferably, a second load-bearing platform is fixedly installed on the side of the second station plate away from the first station plate. Two fourth cylinders are fixedly installed at the bottom of the second load-bearing platform. The output shafts of the two fourth cylinders penetrate through the second load-bearing platform and are movably connected to the second load-bearing platform. The output shafts of the two fourth cylinders are fixedly installed with the same collection box. The bottom inner walls of the two first collection chambers and the two second collection chambers are both inclined surfaces. Two ash discharge guide pipes are fixedly installed at the bottoms of the first cover and the second cover. The four ash discharge guide pipes are respectively communicated with the two first collection chambers and the two second collection chambers. Four shuttle holes are opened at the top of the collection box. The four ash discharge guide pipes all penetrate through the first load-bearing platform and are slidably connected to the first load-bearing platform. The bottom ends of the four ash discharge guide pipes all penetrate through the corresponding shuttle holes and extend into the collection box. A discharge pipe is fixedly installed at the bottom of the collection box. The bottom of the discharge pipe is fixedly installed with a sealing plate through bolts.

[0013] Preferably, four long sliding openings are formed on the first load-bearing platform. The four ash discharge guide pipes respectively penetrate through the four long sliding openings and are in contact with the inner walls of the corresponding long sliding openings.

[0014] Preferably, a first material guide plate and a second material guide plate are arranged below the support platform. The first material guide plate and the second material guide plate are connected by four support rods. A concave frame is fixedly installed on the side of the first station plate away from the second station plate. A horizontal lead screw is rotatably installed in the concave frame. A horizontal moving seat is threadedly installed on the horizontal lead screw. Two bridging rods are slidably installed on the first station plate. One ends of the two bridging rods close to the second station plate are fixedly connected to the first material guide plate. One ends of the two bridging rods away from the second station plate are fixedly connected to the horizontal moving seat. Two material receiving carts are arranged below the first material guide plate and the second material guide plate. Avoidance openings are formed on the first station plate and the second station plate. The two avoidance openings are respectively adapted to the two material receiving carts.

[0015] Preferably, a third servo motor is fixedly installed on the outer wall of one side of the concave frame. The output shaft of the third servo motor is fixedly connected to one end of the horizontal lead screw. A abutting plate is arranged between the first station plate and the second station plate. The two material receiving carts are respectively in contact with both sides of the abutting plate. Limit frames are fixedly installed on both sides of the abutting plate. The two material receiving carts are respectively located in the two limit frames.

[0016] Compared with related technologies, the silica tailings crushing device for casting provided by the present invention has the following beneficial effects:

[0017] ①. By setting the fixed crushing rod, the movable main crushing rod and the movable auxiliary crushing rod, the crushing work can be carried out step by step through the natural falling method of the falling counterweight seat, so that large-volume silica can be pre-treated into small-volume stones, enabling the cone crusher to crush a large amount of silica at one time, and the crushed particle size is more uniform;

[0018] ②. By continuously exhausting air through the exhaust fan and setting air extraction flared pipes at the feed inlet and the discharge outlet of the cone crusher, the silica-containing dust generated during the crushing process and the discharging process can be absorbed. Then, the silica powder is intercepted by the dust filter net, and finally, through the vibration of the vibrating rod, the intercepted silica powder can be concentrated in the collection box, thereby improving the utilization rate of silica resources;

[0019] ③. By treating the dust, the damage to the surrounding environment can be reduced, and at the same time, certain protection is provided for the physical health of the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a front view schematic diagram of the first embodiment of the silica tailings crushing device for casting provided by the present invention;

[0021] Figure 2 It is a rear view schematic diagram of the first embodiment of the silica tailings crushing device for casting provided by the present invention;

[0022] Figure 3 It is an assembly structure schematic diagram of the pre-crushing treatment box and the covering in the first embodiment of the silica tailings crushing device for casting provided by the present invention;

[0023] Figure 4 It is a structure schematic diagram of the cone crusher in the first embodiment of the silica tailings crushing device for casting provided by the present invention;

[0024] Figure 5 It is a connection structure schematic diagram of the bearing partition board and the fixed crushing rod in the first embodiment of the silica tailings crushing device for casting provided by the present invention;

[0025] Figure 6 It is an internal structure schematic diagram of the covering in the first embodiment of the silica tailings crushing device for casting provided by the present invention;

[0026] Figure 7 It is a connection structure schematic diagram of the covering and the rectangular frame in the first embodiment of the silica tailings crushing device for casting provided by the present invention;

[0027] Figure 8 Schematic cross-sectional structure diagram of the covering in the first embodiment of the silica tailings crushing device for casting provided by the present invention;

[0028] Figure 9 For Figure 8 Schematic enlarged structure diagram of part A shown in;

[0029] Figure 10 Assembly schematic diagram of the first cover, the second cover and the connecting frame in the first embodiment of the silica tailings crushing device for casting provided by the present invention;

[0030] Figure 11 Schematic connection structure diagram of the U-shaped pipe and the ventilation pipe in the first embodiment of the silica tailings crushing device for casting provided by the present invention;

[0031] Figure 12 Internal structure schematic diagram of the first cover in the first embodiment of the silica tailings crushing device for casting provided by the present invention;

[0032] Figure 13 Internal structure schematic diagram of the second cover in the first embodiment of the silica tailings crushing device for casting provided by the present invention;

[0033] Figure 14 Front view cross-sectional structure schematic diagram of the first cover in the first embodiment of the silica tailings crushing device for casting provided by the present invention;

[0034] Figure 15 Schematic connection structure diagram of the connecting frame and the dust filter in the first embodiment of the silica tailings crushing device for casting provided by the present invention;

[0035] Figure 16 Schematic connection structure diagram of the vibrating rod and the pull rod in the first embodiment of the silica tailings crushing device for casting provided by the present invention;

[0036] Figure 17 Schematic structure diagram of the collection box in the first embodiment of the silica tailings crushing device for casting provided by the present invention;

[0037] Figure 18 Front view schematic diagram of the second embodiment of the silica tailings crushing device for casting provided by the present invention;

[0038] Figure 19 Assembly structure schematic diagram of the bridging rod, the first guide plate and the second guide plate in the second embodiment of the silica tailings crushing device for casting provided by the present invention;

[0039] Figure 20 Schematic connection structure diagram of the limiting frame and the abutting plate in the second embodiment of the silica tailings crushing device for casting provided by the present invention.

[0040] Reference numerals in the figure: 1, support platform; 2, cone crusher; 3, blanking port; 4, pre-crushing treatment box; 5, covering hood; 6, bearing partition board; 7, fixed crushing rod; 8, discharge port; 9, falling weight seat; 10, movable main crushing rod; 11, guide post; 12, lifting piece; 13, rectangular frame; 14, lifting lead screw; 15, lifting cross table; 16, vertical plate; 17, first cylinder; 18, lifting convex head; 19, side frame plate; 20, connecting cross plate; 21, second cylinder; 22, connecting plate; 23, cross beam; 24, axis rod; 25, folded connecting plate; 26, first horizontal pipe; 27, second horizontal pipe; 28, flared pipe; 29, U-shaped pipe; 30, first cover; 31, second cover; 32, bellows; 33, exhaust fan; 34, filter chamber; 35, first collection chamber; 36, second collection chamber; 37, connecting frame; 38, dust filter screen; 39, rodless cylinder; 40, connecting strip; 41, first bearing platform; 42, third cylinder; 43, linkage block; 44, second bearing platform; 45, fourth cylinder; 46, collection box; 47, ash discharge guide pipe; 48, first standing plate; 49, second standing plate; 50, concave frame; 51, horizontal lead screw; 52, transverse movement seat; 53, bridging rod; 54, first guide plate; 55, second guide plate; 56, limit frame; 57, abutting plate; 58, movable auxiliary crushing rod; 59, ventilation pipe; 60, vibrating rod; 61, pull rod. Detailed implementation manners

[0041] The present invention will be further described below in conjunction with the accompanying drawings and implementation manners.

[0042] First embodiment:

[0043] Please refer to Figures 1 - 17, in the first embodiment of the present invention, the silica tailings crushing device for casting includes: a support table 1 and a cone crusher 2 fixed on the top of the support table 1. A first stand plate 48 and a second stand plate 49 are fixed at the bottom of the support table 1. A feeding port 3 is opened at the top of the support table 1, which can enable the crushed silica to fall completely. A folded connecting plate 25 is fixed on the top of the support table 1. A pre-crushing treatment box 4 is fixed on the top of the folded connecting plate 25. The bottom of the pre-crushing treatment box 4 has a rectangular discharge long pipe. A covering hood 5 is provided at the top of the pre-crushing treatment box 4. A bearing partition plate 6 is fixed in the pre-crushing treatment box 4. A plurality of fixed crushing rods 7 are fixed on the top of the bearing partition plate 6. A plurality of discharge ports 8 are opened on the bearing partition plate 6. The plurality of fixed crushing rods 7 and the plurality of discharge ports 8 are staggered. There is no edge between the fixed crushing rods 7 and the discharge ports 8 to ensure that the crushed silica can be discharged smoothly. A falling weight seat 9 is provided in the covering hood 5. A plurality of movable main crushing rods 10 and a plurality of movable auxiliary crushing rods 58 are fixed at the bottom thereof. The plurality of movable main crushing rods 10 and the plurality of movable auxiliary crushing rods 58 are staggered. The plurality of movable main crushing rods 10 respectively correspond to the plurality of fixed crushing rods 7. And the length of the provided movable main crushing rods 10 is shorter than that of the movable auxiliary crushing rods 58. In this way, it can be ensured that when the movable main crushing rods 10 contact the fixed crushing rods 7, the movable auxiliary crushing rods 58 can penetrate into a deeper position to pierce the silica, thereby ensuring the thoroughness of the silica breakage. Two guide columns 11 are fixed on the top of the falling weight seat 9. The tops of the two guide columns 11 both extend above the covering hood 5 and are slidably connected to the covering hood 5. The tops of the two guide columns 11 are both fixed with lifting pieces 12. A lifting mechanism is provided at the top of the covering hood 5 to lift the falling weight seat 9. In this way, the falling weight seat 9 can be lifted upwards together and then allowed to fall naturally, so that the movable main crushing rods 10 and the movable auxiliary crushing rods 58 form impacts with the silica. And, in order to prevent the lifting piece 12 from descending to contact the top of the covering hood 5, so that the lifting convex head 18 in the lifting mechanism cannot lift it, two simple supports are fixed at the top of the covering hood 5 to provide the lowest limit for the descent of the lifting piece 12;

[0044] In addition, a first horizontally arranged pipe 26 is provided on one side of the cone crusher 2, and a second horizontally arranged pipe 27 is provided below the support platform 1. The first horizontally arranged pipe 26 corresponds to the top outlet of the cone crusher 2, while the second horizontally arranged pipe 27 corresponds to the position below the material dropping port 3. Three flared pipes 28 are fixed on both the first horizontally arranged pipe 26 and the second horizontally arranged pipe 27. In this way, a suction effect can be formed at the inlet and the lower outlet of the cone crusher 2 to absorb the generated dust containing silica powder in the first time. A same U-shaped pipe 29 is fixed on the first horizontally arranged pipe 26 and the second horizontally arranged pipe 27. A side frame plate 19 is fixed on the top of the support platform 1. A first cover 30 and a second cover 31 are provided on the side of the side frame plate 19 away from the cone crusher 2. A suction fan 33 is provided on the side of the second cover 31 away from the side frame plate 19. The air inlet end of the suction fan 33 is fixedly connected with the second cover 31. One end of a corrugated pipe 32 is fixed on the side of the first cover 30 close to the side frame plate 19. The other end of the corrugated pipe 32 is fixed with one end of a ventilation pipe 59. The other end of the ventilation pipe 59 is fixedly connected with the U-shaped pipe 29. The ventilation pipe 59 penetrates through the side frame plate 19. Filter chambers 34, first collection chambers 35 and second collection chambers 36 are formed on both the first cover 30 and the second cover 31. The filter chamber 34 is located between the first collection chamber 35 and the second collection chamber 36. The suction fan 33 is communicated with the filter chamber 34. A connecting frame 37 is arranged between the first cover 30 and the second cover 31. Two dust filter meshes 38 are fixed on the connecting frame 37.

[0045] In the above method, in order to shake off the silica powder attached to the dust filter mesh 38, vibrating rods 60 are arranged in both the first collection chamber 35 and the second collection chamber 36 located in the second cover 31. Two pull rods 61 are slidably installed on the side of the second cover 31 away from the first cover 30. Rings are fixed at one ends of the two vibrating rods 60 close to the pull rods 61. Return springs are sleeved on the two pull rods 61. One ends of the two return springs close to the first cover 30 are respectively fixedly connected with the two rings. One ends of the two return springs away from the first cover 30 are respectively fixedly connected with the inner walls of one sides of the first collection chamber 35 and the second collection chamber 36. By pulling the pull rods 61, the silica powder attached to the dust filter mesh 38 can be shaken off by using the elastic function of the return springs.

[0046] In this method, in order to facilitate the pouring of a large volume of silica into the pre-crushing treatment box 4, a connecting cross plate 20 is movably arranged on the top of the side frame plate 19. A second air cylinder 21 is fixed on one side of the side frame plate 19 close to the cone crusher 2, and its output shaft is fixedly connected to the connecting cross plate 20. A connecting plate 22 is fixed on the top of the connecting cross plate 20, and a cross beam 23 is fixed on the top of the connecting plate 22. A central shaft rod 24 is rotatably installed at the bottom of the cross beam 23. The central shaft rod 24 is fixedly connected to the covering hood 5 through a transverse connecting arm. A first servo motor is fixed on the top of the cross beam 23, and its output shaft is fixedly connected to the top end of the central shaft rod 24. An adaptation slot is formed on the connecting plate 22 for the covering hood 5 and the rectangular frame 13 to rotate and shuttle through.

[0047] In the lifting mechanism mentioned above, there is a rectangular frame 13. The rectangular frame 13 is fixed on the top of the covering hood 5. A lifting lead screw 14 is rotatably installed in the rectangular frame 13. A lifting cross platform 15 is threadedly installed on the lifting lead screw 14. Two vertical plates 16 are fixed on the top of the lifting cross platform 15. On one side of the two vertical plates 16 close to each other, a first air cylinder 17 is fixed respectively. The output shafts of the two first air cylinders 17 respectively penetrate through the two vertical plates 16 and are movably connected to the corresponding vertical plates 16. Lifting convex heads 18 are fixed on the output shafts of the two first air cylinders 17. The tops of the two lifting convex heads 18 are respectively in contact with the bottoms of the two pulling pieces 12. A second servo motor is fixed on the top of the rectangular frame 13, and its output shaft is fixedly connected to the top end of the lifting lead screw 14. Two limiting rods are fixed in the rectangular frame 13. The two limiting rods penetrate through the lifting cross platform 15 and are slidably connected to it.

[0048] In this method, in order to enable the connecting frame 37 to drive the dust filter net 38 to move, so as to facilitate the alternative use of the two dust filter nets 38, a rodless air cylinder 39 is fixed on one side of the side frame plate 19 away from the cone crusher 2. An adapter bar 40 is fixed on the slider thereof. The adapter bar 40 is fixedly connected to the top of the connecting frame 37. Two mounting openings are formed on the connecting frame 37. The two dust filter nets 38 are respectively fixed in the two mounting openings. And the two mounting openings are respectively adapted to the filtering chamber 34 and the second collection chamber 36 in the initial state.

[0049] In this method, in order to ensure that the movement of the connecting frame 37 will not be hindered by the first cover 30 and the second cover 31, a first bearing platform 41 is fixed on one side of the side frame plate 19 away from the cone crusher 2. The installed exhaust fan 33 is mounted on the first bearing platform 41. Two third air cylinders 42 are fixed on the top of the first bearing platform 41. Linkage blocks 43 are fixed on the output shafts of the two third air cylinders 42. The tops of the two linkage blocks 43 are respectively fixedly connected to the first cover 30 and the second cover 31. By the telescopic movement of the output shafts of the third air cylinders 42, the purpose of loosening or clamping the connecting frame 37 can be achieved.

[0050] In this method, in order to centrally collect the silica powder vibrated down, a second load-bearing platform 44 is fixed on the side of the second station plate 49 away from the first station plate 48. Two fourth cylinders 45 are fixed to the bottom of the second load-bearing platform 44. The output shafts of the two fourth cylinders 45 penetrate through the second load-bearing platform 44 and are movably connected to the second load-bearing platform 44. A collecting box 46 is fixed on the output shafts of the two fourth cylinders 45. The bottom inner walls of the two first collecting chambers 35 and the two second collecting chambers 36 are both inclined surfaces, so that the silica powder can be smoothly discharged. Two ash-discharging guide pipes 47 are fixed to the bottoms of the first cover 30 and the second cover 31 respectively. The ash-discharging guide pipe 47 is arranged at the lowest position of the inclined surface. The four ash-discharging guide pipes 47 are respectively communicated with the two first collecting chambers 35 and the two second collecting chambers 36. Four shuttle holes are formed in the top of the collecting box 46. The four ash-discharging guide pipes 47 all penetrate through the first load-bearing platform 41 and are slidably connected to the first load-bearing platform 41. The bottom ends of the four ash-discharging guide pipes 47 all penetrate through the corresponding shuttle holes and extend into the collecting box 46. A dust discharging pipe is fixed to the bottom of the collecting box 46. A sealing plate is fixed to the bottom of the dust discharging pipe through bolts. In addition, four long sliding openings are formed in the first load-bearing platform 41. The four ash-discharging guide pipes 47 respectively penetrate through the four long sliding openings and are in contact with the inner walls of the corresponding long sliding openings, so as to form a sliding relationship between the ash-discharging guide pipe 47 and the first load-bearing platform 41.

[0051] In this embodiment

[0052] In the initial state, the output shafts of the first cylinder 17, the third cylinder 42 and the fourth cylinder 45 are all in the extended state;

[0053] When it is necessary to crush silica tailings, first start the output shaft of the second cylinder 21 to extend. Its output shaft drives the connecting cross plate 20 to rise, so that it can drive the covering hood 5 to rise under the connection of the shaft center rod 24, separating the covering hood 5 from the pre-crushing treatment box 4. Subsequently, start the first servo motor in the forward direction. Its output shaft drives the shaft center rod 24 to rotate, and then it can drive the covering hood 5 to rotate together. After the covering hood 5 rotates 180°, turn off the first servo motor. Then pour large-volume silica into the pre-crushing treatment box 4, and then start the first servo motor in the reverse direction to make the covering hood 5 rotate back 180°. Immediately start the output shaft of the second cylinder 21 to retract, so that the covering hood 5 returns above the pre-crushing treatment box 4 again and the two come into contact again. Subsequently, start the output shaft of the first cylinder 17 to retract, separating the lifting convex head 18 from the lifting piece 12. At this time, under the action of gravity, the falling counterweight seat 9 drives the movable main crushing rod 10 and the movable auxiliary crushing rod 58 to fall rapidly. Finally, in cooperation with the fixed crushing rod 7, the large-volume silica is directly crushed by the movable main crushing rod 10 and the movable auxiliary crushing rod 58. After one falling impact, start the second servo motor in the forward direction. Its output shaft drives the lifting lead screw 14 to rotate, and the lifting cross table 15 starts to descend. Until it descends to the lowest position, start the output shafts of the two first cylinders 17 to extend, and extend the two lifting convex heads 18 again. Then start the second servo motor in the reverse direction to drive the lifting convex head 18 to rise. When the lifting convex head 18 touches the lifting piece 12, it will drive it to rise, thus lifting the falling counterweight seat 9 up again. After lifting it to the original position, start the output shaft of the first cylinder 17 to retract, separating the lifting convex head 18 from the lifting piece 12, and then the silica can be impacted and crushed again, and so on, until the silica in the pre-crushing treatment box 4 is completely decomposed and falls;

[0054] During the process of crushing the silica, a part of the silica smaller than the diameter of the discharge port 8 will directly fall through the discharge port 8 and land in the cone crusher 2. At the same time, start the cone crusher 2 and place a material truck under the feeding port 3. At this time, the falling silica begins to be crushed, and the crushed material directly falls into the material truck;

[0055] When discharging the pre-crushed silica from the pre-crushing treatment box 4 into the cone crusher 2 and discharging the silica after being crushed in the cone crusher 2, a large amount of dust with silica powder will be generated. At this time, the exhaust fan 33 can be started, and a negative pressure will be generated at the suction ports of the plurality of flared pipes 28, so that the generated dust can be quickly sucked away. The air with silica powder enters the C-shaped pipe 29 along the first horizontal pipe 26 and the second horizontal pipe 27, and then enters the filter chamber 34 in the first cover 30 through the C-shaped pipe 29, the ventilation pipe 59 and the corrugated pipe 32. Immediately, the air with silica dust is filtered through the filter screen 38, and the silica powder carried therein is intercepted, and the filtered air is directly discharged;

[0056] When the used filter screen 38 needs to be replaced due to long use time, first turn off the equipment. First, retract the output shaft of the fourth cylinder 45 to separate the ash discharge guide pipe 47 from the collection box 46. Then, retract the output shafts of the two third cylinders 42 to separate the first cover 30 and the second cover 31, so that the connecting frame 37 is not stuck by foreign objects. Then, start the rodless cylinder 39, and the slider thereon drives the connecting strip 40 to move, and then can drive the connecting frame 37 to move. Finally, the unused filter screen 38 is brought between the two filter chambers 34, and the previously used filter screen 38 is located between the two first collection chambers 35. Immediately, extend the output shafts of the two third cylinders 42 to clamp the connecting frame 37 again with the first cover 30 and the second cover 31. Then, the cone crusher 2 can be started to continue the crushing work. At the same time, on the other side, extend the output shaft of the fourth cylinder 45 to insert the bottom ends of the four ash discharge guide pipes 47 into the collection box 46 again. Then, pull the corresponding pull rod 61, the corresponding vibrating rod 60 is pulled, and the corresponding return spring is in a compressed state. Then, release the pull rod 61, and the compressed return spring rebounds quickly, so that the vibrating rod 60 directly impacts the used filter screen 38, thereby vibrating off the silica dust attached thereto and falling into the collection box 46 through the ash discharge guide pipe 47;

[0057] Until the next time the filter screen 38 is replaced, start the rodless cylinder 39 again to drive the connecting frame 37 back to perform the replacement. At the same time, pull the corresponding pull rod 61 to vibrate off the silica powder on the used filter screen 38 again, and so on.

[0058] Compared with the related technology, the silica tailings crushing device for casting provided by the present invention has the following beneficial effects:

[0059] ①. By means of the provided fixed crushing rod 7, movable main crushing rod 10 and movable secondary crushing rod 58, the crushing work can be carried out step by step through the natural fall of the falling counterweight seat 9, so that large-volume silica can be pretreated into small-volume stones, enabling the cone crusher 2 to crush a large amount of silica at one time, and the particle size of the crushed material is more uniform;

[0060] ②. By continuously exhausting air through the exhaust fan 33 and arranging flared pipes 28 for air extraction at the feed inlet and discharge port 3 of the cone crusher 2, the dust with silica generated during the crushing process and the discharging process can be absorbed. Then, the silica powder is intercepted by the dust filter screen 38, and finally, through the vibration of the vibrating rod 60, the intercepted silica powder can be concentrated in the collection box 46, thereby improving the utilization rate of silica resources;

[0061] ③. By treating the dust, the damage to the surrounding environment can be reduced, and at the same time, certain protection is provided for the physical health of the staff.

[0062] Second Embodiment:

[0063] Based on the silica tailings crushing device for casting provided in the first embodiment of the present application, the second embodiment of the present application proposes another silica tailings crushing device for casting. The second embodiment is merely a preferred mode of the first embodiment, and the implementation of the second embodiment will not affect the independent implementation of the first embodiment.

[0064] The following further describes the second embodiment of the present invention in conjunction with the drawings and embodiments.

[0065] Please refer to Figures 18 - 20 , the silica tailings crushing device for casting further includes a first guide plate 54 and a second guide plate 55. The first guide plate 54 and the second guide plate 55 are both arranged below the support table 1 and are vertically corresponding to the discharge port 3. The first guide plate 54 and the second guide plate 55 are connected by four support rods. A concave frame 50 is fixed on one side of the first stand plate 48 away from the second stand plate 49. A horizontal lead screw 51 is rotatably installed in the concave frame 50. A transverse moving seat 52 is threadedly installed on the horizontal lead screw 51. Two bridging rods 53 are slidably installed on the first stand plate 48. One ends of the two bridging rods 53 close to the second stand plate 49 are fixedly connected to the first guide plate 54, and the other ends of the two bridging rods 53 away from the second stand plate 49 are fixedly connected to the transverse moving seat 52. Two receiving carts are arranged below the first guide plate 54 and the second guide plate 55. Avoidance openings are provided on both the first stand plate 48 and the second stand plate 49, and the two avoidance openings are respectively adapted to the two receiving carts.

[0066] A third servo motor is fixed on the outer wall of one side of the concave frame 50. The output shaft of the third servo motor is fixedly connected to one end of the horizontally arranged lead screw 51. A abutting plate 57 is arranged between the first station plate 48 and the second station plate 49. Two receiving carts are respectively in contact with both sides of the abutting plate 57. Limit frames 56 are fixedly arranged on both sides of the abutting plate 57, and the two receiving carts are respectively located in the two limit frames 56.

[0067] In this embodiment

[0068] When it is necessary to collect the crushed silica, in the initial state, the discharged silica will be discharged into the receiving cart below through the second guide plate 55;

[0069] When the receiving cart is about to be full, in order to ensure that the discharging will not be interrupted, the third servo motor can be started forward. Its output shaft drives the horizontally arranged lead screw 51 to rotate, and the transverse moving seat 52 drives the connecting rod 53 to move horizontally, so as to drive the first guide plate 54 and the second guide plate 55 to move horizontally. During the movement, the outlet between the first guide plate 54 and the second guide plate 55 moves from above the previous receiving cart to above another receiving cart. At this time, the discharging direction is changed, and the crushed silica is poured into another receiving cart;

[0070] At this time, pull away another full receiving cart. After emptying the silica inside, push it back to its original position to wait for the next time to continue receiving materials, and so on, so as to ensure that the discharging will not be interrupted and improve the crushing efficiency.

[0071] The above are only the embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. All equivalent structural or equivalent process transformations made by using the content of the specification and drawings of the present invention, or directly or indirectly applied to other related technical fields, are equally included in the patent protection scope of the present invention.

Claims

1. A silica tailings crushing device for casting, comprising a support platform and a cone crusher, wherein the cone crusher is fixedly mounted on the top of the support platform, characterized in that: A blanking port is formed at the top of the support platform. A pre-crushing treatment box is arranged above the cone crusher. A covering cover is arranged at the top of the pre-crushing treatment box. A bearing partition plate is fixedly installed in the pre-crushing treatment box. A plurality of fixed crushing rods are fixedly installed at the top of the bearing partition plate. A plurality of discharge ports are formed in the bearing partition plate. The plurality of fixed crushing rods and the plurality of discharge ports are arranged in a staggered manner. A falling counterweight seat is arranged in the covering cover. A plurality of movable main crushing rods and a plurality of movable auxiliary crushing rods are fixedly installed at the bottom of the falling counterweight seat. The plurality of movable main crushing rods and the plurality of movable auxiliary crushing rods are arranged in a staggered manner, and the plurality of movable main crushing rods respectively correspond to the plurality of fixed crushing rods. Two guide columns are fixedly installed at the top of the falling counterweight seat. The tops of the two guide columns both extend above the covering cover and are slidably connected to the covering cover, and lifting sheets are fixedly installed at the tops of the two guide columns; A lifting mechanism is arranged at the top of the covering cover for lifting the falling counterweight seat; A first horizontal pipe is arranged on one side of the cone crusher. A second horizontal pipe is arranged below the support platform. The first horizontal pipe corresponds to the top of the cone crusher. The second horizontal pipe corresponds to the lower part of the blanking port. Three flared pipes are fixedly installed on both the first horizontal pipe and the second horizontal pipe. An inverted U-shaped pipe is fixedly installed on the first horizontal pipe and the second horizontal pipe. A side frame plate is fixedly installed at the top of the support platform. A first cover and a second cover are arranged on the side of the side frame plate away from the cone crusher. A suction fan is arranged on the side of the second cover away from the side frame plate. The air inlet end of the suction fan is fixedly connected to the second cover. One end of a corrugated pipe is fixedly installed on the side of the first cover close to the side frame plate. The other end of the corrugated pipe is fixedly installed on one end of a ventilation pipe. The other end of the ventilation pipe is fixedly connected to the inverted U-shaped pipe. The ventilation pipe penetrates through the side frame plate. Filter chambers, a first collection chamber and a second collection chamber are formed on both the first cover and the second cover. The filter chamber is located between the first collection chamber and the second collection chamber. The suction fan is communicated with the filter chamber. A connecting frame is arranged between the first cover and the second cover. Two dust filter nets are fixedly installed on the connecting frame; A first standing plate and a second standing plate are fixedly installed at the bottom of the support platform. A folded connecting plate is fixedly installed at the top of the support platform. The top of the folded connecting plate is fixedly connected to the pre-crushing treatment box. Vibrating rods are arranged in both the first collection chamber and the second collection chamber located in the second cover. Two pull rods are slidably installed on the side of the second cover away from the first cover. Ring plates are fixedly installed at one ends of the two vibrating rods close to the pull rods. Return springs are sleeved on the two pull rods. One ends of the two return springs close to the first cover are respectively fixedly connected to the two ring plates. One ends of the two return springs away from the first cover are respectively fixedly connected to one side inner walls of the first collection chamber and the second collection chamber; A first load-bearing platform is fixedly installed on the side of the side frame plate away from the cone crusher, the bottom of the exhaust fan is fixedly connected to the first load-bearing platform, two third cylinders are fixedly installed on the top of the first load-bearing platform, linkage blocks are fixedly installed on the output shafts of the two third cylinders, and the tops of the two linkage blocks are fixedly connected to the first cover and the second cover respectively.

2. The silica tailings crushing device for casting according to claim 1, characterized in that: A second load-bearing platform is fixedly installed on the side of the second station plate away from the first station plate, and two fourth cylinders are fixedly installed on the bottom of the second load-bearing platform, and the output shafts of the two fourth cylinders pass through the second load-bearing platform and are movably connected to the second load-bearing platform, and the same collecting box is fixedly installed on the output shafts of the two fourth cylinders, and the bottom inner walls of the two first collecting chambers and the two second collecting chambers are set as inclined surfaces, and two ash discharge guide pipes are fixedly installed on the bottom of the first cover and the second cover, and the four ash discharge guide pipes are respectively connected with the two first collecting chambers and the two second collecting chambers, and four shuttle holes are opened on the top of the collecting box, and the four ash discharge guide pipes pass through the first load-bearing platform and are slidably connected to the first load-bearing platform, and the bottom ends of the four ash discharge guide pipes pass through the corresponding shuttle holes and extend into the collecting box, and an ash discharge pipe is fixedly installed on the bottom of the collecting box, and a sealing plate is fixedly installed on the bottom of the ash discharge pipe by bolts.

3. The silica tailings crushing device for casting according to claim 1, characterized in that: A connecting cross plate is movably provided on the top of the side frame plate, a second cylinder is fixedly installed on the side of the side frame plate close to the cone crusher, the output shaft of the second cylinder is fixedly connected to the connecting cross plate, a connecting plate is fixedly installed on the top of the connecting cross plate, a cross beam is fixedly installed on the top of the connecting plate, an axial rod is rotatably installed on the bottom of the cross beam, a transverse connecting arm is fixedly installed on the axial rod, one side of the transverse connecting arm is fixedly connected to the covering cover, a first servo motor is fixedly installed on the top of the cross beam, the output shaft of the first servo motor is fixedly connected to the top end of the axial rod, and an adaptor groove is opened on the connecting plate for the covering cover and the rectangular frame to rotate and shuttle.

4. The silica tailings crushing device for casting according to claim 1, characterized in that: The lifting mechanism includes a rectangular frame, which is fixedly installed on the top of the covering cover, a lifting screw is rotatably installed in the rectangular frame, a lifting platform is threadedly installed on the lifting screw, two vertical plates are fixedly installed on the top of the lifting platform, and a first cylinder is fixedly installed on the side where the two vertical plates are close to each other, the output shafts of the two first cylinders respectively penetrate the two vertical plates and are movably connected to the corresponding vertical plates, and lifting bosses are fixedly installed on the output shafts of the two first cylinders, and the tops of the two lifting bosses are respectively in contact with the bottoms of the two lifting plates, and a second servo motor is fixedly installed on the top of the rectangular frame, and the output shaft of the second servo motor is fixedly connected to the top of the lifting screw.

5. The casting silica tailings crushing device according to claim 1, characterized in that: A rodless cylinder is fixedly installed on the side of the side frame plate away from the cone crusher, and a connecting strip is fixedly installed on the slider of the rodless cylinder. The connecting strip is fixedly connected to the top of the connecting frame. Two installation openings are provided on the connecting frame, and the two dust filters are fixedly installed in the two installation openings respectively, and the two installation openings are respectively adapted to the filter chamber and the second collection chamber.

6. The casting silica tailings crushing device according to claim 2, characterized in that: The first load-bearing platform is provided with four long sliding openings, and the four ash discharge guide pipes respectively penetrate through the four long sliding openings and contact with the inner walls of the corresponding long sliding openings.

7. The casting silica tailings crushing device according to claim 1, characterized in that: A first material guide plate and a second material guide plate are provided below the support platform, and the first material guide plate and the second material guide plate are connected by four support rods, and a concave frame is fixedly installed on the side of the first station plate away from the second station plate, a transverse screw is rotatably installed in the concave frame, and a transverse seat is threadedly installed on the transverse screw, and two frame connecting rods are slidably installed on the first station plate, and one end of the two frame connecting rods close to the second station plate is fixedly connected to the first material guide plate, and one end of the two frame connecting rods away from the second station plate is fixedly connected to the transverse seat, and two material receiving carts are provided below the first material guide plate and the second material guide plate, and avoidance openings are opened on the first station plate and the second station plate, and the two avoidance openings are respectively adapted to the two material receiving carts.

8. The casting silica tailings crushing device according to claim 7, characterized in that: A third servo motor is fixedly installed on an outer wall of one side of the concave frame, and an output shaft of the third servo motor is fixedly connected to one end of the transverse screw. An abutment plate is provided between the first station plate and the second station plate, and the two material receiving carts are respectively in contact with two sides of the abutment plate, and limit frames are fixedly installed on both sides of the abutment plate, and the two material receiving carts are respectively located in the two limit frames.

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