Energy-saving grinding assembly for sand mill

Abstract

This invention discloses an energy-saving grinding component for a sand mill, comprising an equipment housing containing a cooling tank, a grinding chamber located above the equipment housing, a spiral cooling cavity within the grinding chamber, a feeding pipe and a discharge pipe on the grinding chamber, and a cover fixedly mounted on the top of the equipment housing on one side of the grinding chamber. This invention improves the contact shearing efficiency between the grinding chamber and the material and grinding media beads through the coordinated operation of a cam, hollow shaft, grinding drum, and pin, achieving material grinding. Heat exchange is achieved between the cooling water in the spiral cooling cavity and the grinding chamber, enabling temperature control while recycling water resources. It also allows the warm water after heat exchange to quickly and thoroughly mix with the low-temperature cooling water and cooling elements, agitating the water to break up temperature stratification, ensuring the low-temperature stability of the return cooling water, and continuously guaranteeing the cooling effect. The entire process is driven by a single power source, balancing cooling efficiency and energy saving.

Description

Technical Field

[0001] This invention relates to the field of sand mill technology, and in particular to an energy-saving grinding component for a sand mill. Background Technology

[0002] A sand mill is an ultrafine grinding equipment widely used in nanomaterials, fine chemicals, ceramic powders, and other fields. It relies on the high-frequency collision and shearing between the grinding media beads and the material to achieve grinding. With its high grinding efficiency and fine particle size, it has become a core piece of equipment for the deep processing of powder materials. Its core grinding component rotates to drive the grinding media beads, creating a flow field that disperses and grinds the material within the grinding chamber. The overall structure is compact and adaptable to continuous production needs, making it particularly widely used in the ultrafine processing of hard powders such as silicon carbide.

[0003] Existing sand mills mostly use a single transmission structure for their grinding components, and dead zones are prone to appear in the grinding flow field, resulting in insufficient grinding of materials and increased energy consumption from repeated grinding. Furthermore, a large amount of heat is generated during the grinding process, and currently, additional water pumps are often needed to power the flow of cooling water. This cooling water is not easily reused, leading to a double waste of water resources and energy. At the same time, the cooling water after heat exchange lacks an efficient secondary cooling structure, resulting in poor cooling effect and unstable return water temperature, further increasing the overall energy consumption of the equipment and making it difficult to meet the energy-saving requirements of industrial production. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing an energy-saving grinding component for sand mills.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A grinding component for an energy-saving sand mill includes an equipment box containing a cooling tank. A grinding chamber is located above the equipment box, containing a spiral cooling cavity. A feeding pipe and a discharge pipe are provided on the grinding chamber. A cover is fixedly installed on the top of the equipment box on one side of the grinding chamber. A grinding mechanism is provided on the cover. A circulation mechanism connected to the grinding mechanism is provided on the cover. An auxiliary mechanism connected to the grinding mechanism is provided on the cover.

[0006] Preferably, the grinding mechanism includes a servo motor fixedly installed on the inner wall of one side of the housing, the output shaft of the servo motor being fixedly connected to a first rotating shaft, a first gear being fixedly installed on the outer wall of the first rotating shaft, one end of the first rotating shaft penetrating through the other inner wall of the housing and extending outward, a cam being fixedly installed on one end of the first rotating shaft, a hollow shaft being rotatably connected to the outer wall of the grinding box near the housing, and a grinding cylinder being fixedly installed at one end of the hollow shaft located inside the grinding box.

[0007] Preferably, the other end of the hollow shaft penetrates one side of the outer wall of the casing and extends into the casing. A second rotating shaft is rotatably connected to the grinding drum. A grinding rotor is fixedly installed at one end of the second rotating shaft inside the grinding chamber. A first helical blade is fixedly installed on the outer wall of the grinding rotor. A plurality of second bevel gears located inside the grinding drum are fixedly installed on the outer wall of the second rotating shaft. A plurality of pins are penetrating the outer wall of the grinding drum. A first bevel gear is fixedly installed at one end of each pin inside the grinding drum. The plurality of first bevel gears are meshed with second bevel gears. A second helical blade located outside the grinding drum is fixedly installed on the outer wall of each pin. A second gear located inside the casing is fixedly installed on the outer wall of the second rotating shaft. The first gear and the second gear are meshed with each other.

[0008] Preferably, a groove is formed on the side wall of the cam near the grinding box, and a threaded rod is rotatably connected between the inner walls of the two ends of the groove. A movable block is provided on the outer wall of the threaded rod and threadedly connected thereto. The movable block is slidably connected to both inner walls of the groove. One end of the threaded rod passes through one inner wall of the groove and is fixedly installed with a knob located outside the groove. A push rod is fixedly installed on the side wall of the movable block near the grinding box. A connecting frame located between the cam and the grinding box is fixedly installed on the outer wall of the hollow shaft. The push rod passes through the connecting frame and is slidably connected to the inner wall of the connecting frame.

[0009] Preferably, the circulation mechanism includes a fixed block fixedly installed on one side of the outer wall of the housing, a conveying box fixedly installed on the side wall of the fixed block near the cam, a movable rod slidably connected to the conveying box through the outer wall of the conveying box near the cam, a piston plate slidably connected to the inner wall of the conveying box fixedly installed at the end of the movable rod inside the conveying box, a stop plate abutting against the cam fixedly installed at the end of the movable rod outside the conveying box, a spring fixedly connected between the stop plate and one side of the outer wall of the conveying box, and an inlet pipe and a drain pipe communicating with the inside of the conveying box.

[0010] Preferably, both the inlet pipe and the outlet pipe are equipped with a one-way valve. The ends of the inlet pipe and the outlet pipe that are connected to the delivery box are located on the side of the piston plate away from the movable rod. The end of the inlet pipe away from the delivery box is connected to the cooling chamber, and the end of the outlet pipe away from the delivery box is connected to the cooling tank.

[0011] Preferably, the auxiliary mechanism includes a partition plate fixedly installed inside the housing. A reciprocating lead screw rotatably connected to the partition plate is passed through it. A fourth bevel gear is fixedly installed on the top of the reciprocating lead screw. A third bevel gear meshing with the fourth bevel gear is fixedly installed at one end of the second rotating shaft located inside the housing. Two connecting rods slidably connected to the partition plate are passed through it. The upper ends of the two connecting rods are fixedly connected to the same first lifting block that cooperates with the reciprocating lead screw. The lower ends of the two connecting rods are fixedly connected to the same second lifting block. A mixing cylinder rotatably connected to the second lifting block is passed through it. A square rod slidably connected to the top of the mixing cylinder is passed through it. One end of the square rod is fixedly connected to the lower end of the reciprocating lead screw. A piston block slidably connected to the inner wall of the mixing cylinder is fixedly installed at the end of the square rod located inside the mixing cylinder. A through hole communicating with a cooling tank is opened on the top of the equipment box. The mixing cylinder passes through the through hole. A mixing rod located inside the cooling tank is fixedly installed on the outer wall of the mixing cylinder.

[0012] Preferably, the mixing cylinder is provided with a second connecting pipe and a plurality of first connecting pipes communicating with its interior. The plurality of first connecting pipes are all inclined. A one-way valve is provided inside the second connecting pipe and the plurality of first connecting pipes. The ends of the second connecting pipe and the plurality of first connecting pipes that are connected to the mixing cylinder are all located below the piston block. The cooling tank is provided with a water outlet pipe communicating with its interior. The end of the water outlet pipe away from the cooling tank is connected to the cooling cavity.

[0013] The beneficial effects of this invention are: A servo motor drives a cam to rotate, which in turn causes the grinding drum to oscillate back and forth. At the same time, the first gear meshes with the second gear, which drives the second shaft and the grinding rotor to rotate. The second bevel gear meshes with the first bevel gear, which causes the pin to rotate on its own axis while revolving with the grinding drum. The first spiral blade of the grinding rotor synchronously pushes the material to flow axially, thereby greatly increasing the contact frequency and shear strength between the pin and the grinding media beads and the material. This quickly breaks up material agglomerates to achieve grinding, avoids local accumulation, and allows for adjustment of the oscillation amplitude to adapt to different materials, thereby improving grinding efficiency and uniformity.

[0014] A servo motor drives a cam to periodically press against the abutment plate, which, in conjunction with a spring, causes the piston plate to slide back and forth within the conveyor box. This enables the cooling water to circulate between the cooling tank and the spiral cooling chamber of the grinding box, quickly absorbing the heat generated during grinding, controlling the grinding temperature, preventing changes in material properties and wear of the grinding media beads, ensuring continuous and stable grinding, and improving water resource utilization. No additional circulation pump is required, resulting in energy saving and consumption reduction.

[0015] The second rotating shaft drives the third and fourth bevel gears to mesh, causing the reciprocating screw to rotate. This causes the mixing cylinder to perform a combination of reciprocating up-and-down and rotating motions within the cooling tank. The sliding of the piston block within the mixing cylinder ensures that the warm water, low-temperature cooling water, and cooling elements are fully mixed, improving the efficiency of secondary cooling heat exchange. The mixing rod agitates the water in all directions, breaking down temperature stratification and ensuring uniform cooling water temperature, thus forming a highly efficient closed-loop cooling system.

[0016] This invention improves the contact shearing efficiency between the grinding pin and the material and grinding media beads through the coordinated operation of the cam, hollow shaft, grinding drum and pin, thus achieving material grinding. It can also be adapted to different material characteristics, improving grinding uniformity and overall efficiency. Heat exchange is achieved between the cooling water in the spiral cooling chamber and the grinding box, which can control the temperature while recycling water resources. It can also allow the warm water and low-temperature cooling water and cooling elements to mix quickly and thoroughly after heat exchange, and agitate the water to break up temperature stratification, ensuring the low-temperature stability of the return cooling water and continuously guaranteeing the cooling effect. The entire process is driven by a single power source, taking into account both cooling efficiency and energy saving. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of one side of a grinding component for an energy-saving sand mill proposed in this invention; Figure 2 This is a three-dimensional structural diagram of the other side of the grinding component for an energy-saving sand mill proposed in this invention; Figure 3 Appendix to this invention Figure 2 Enlarged structural diagram at point A; Figure 4 This is a three-dimensional structural diagram of the present invention after being cut along the axis of the grinding box; Figure 5 Appendix to this invention Figure 4 Enlarged structural diagram at point B; Figure 6 Appendix to this invention Figure 4 Enlarged structural diagram at point C; Figure 7 This is a three-dimensional structural diagram of the present invention cut along the centerline of the conveyor box.

[0018] In the diagram: 1 Equipment box, 2 Grinding box, 3 Cover, 4 Cam, 5 Hollow shaft, 6 Conveyor box, 7 Feeding pipe, 8 Water inlet pipe, 9 Water outlet pipe, 10 Discharge pipe, 11 Pumping pipe, 12 Fixing block, 13 Connecting frame, 14 Push rod, 15 Moving block, 16 Groove, 17 Support plate, 18 Spring, 19 Piston plate, 20 Knob, 21 Movable rod, 22 Servo motor, 23 Cooling chamber, 24 Grinding rotor, 25 First spiral blade, 26 First gear, 27 First rotating shaft, 2 8. Threaded rod, 29. Second gear, 30. Pin, 31. Second helical blade, 32. Grinding cylinder, 33. Through hole, 34. First bevel gear, 35. Second bevel gear, 36. Second shaft, 37. Third bevel gear, 38. Fourth bevel gear, 39. First lifting block, 40. Connecting rod, 41. Reciprocating screw, 42. Partition plate, 43. Second lifting block, 44. Square rod, 45. Mixing cylinder, 46. Mixing rod, 47. First connecting pipe, 48. Second connecting pipe, 49. Piston block, 50. Cooling tank. Detailed Implementation

[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0020] Reference Figures 1-7A grinding assembly for an energy-saving sand mill includes an equipment box 1, a cooling tank 50 inside the equipment box 1, a grinding box 2 above the equipment box 1, a spiral cooling chamber 23 inside the grinding box 2, a feeding pipe 7 and a discharge pipe 10 on the grinding box 2, a cover 3 fixedly installed on the top of the equipment box 1 on one side of the grinding box 2, and a grinding mechanism on the cover 3. The grinding mechanism includes a servo motor 22 fixedly installed on the inner wall of one side of the cover 3, the output shaft of the servo motor 22 fixedly connected to a first rotating shaft 27, and a first gear 26 fixedly installed on the outer wall of the first rotating shaft 27. One end of the first rotating shaft 27 penetrates through the other inner wall of the casing 3 and extends outward. A cam 4 is fixedly installed at one end of the first rotating shaft 27. A hollow shaft 5 is rotatably connected to the grinding box 2 on the outer wall near the casing 3. A grinding cylinder 32 is fixedly installed at one end of the hollow shaft 5 inside the grinding box 2. The other end of the hollow shaft 5 penetrates through the outer wall of the casing 3 and extends into the casing 3. A second rotating shaft 36 is rotatably connected to the grinding cylinder 32. A grinding rotor 24 is fixedly installed at one end of the second rotating shaft 36 inside the grinding box 2. A first spiral blade 25 is fixedly installed on the outer wall of the grinding rotor 24. Multiple second bevel gears 35 located inside the grinding cylinder 32 are fixedly installed on the outer wall of the second rotating shaft 36. Multiple pins 30 are provided through the outer wall of the grinding cylinder 32. A first bevel gear 34 is fixedly installed at one end of each pin 30 inside the grinding cylinder 32. The multiple first bevel gears 34 are meshed with the second bevel gears 35. Second spiral blades 31 located outside the grinding cylinder 32 are fixedly installed on the outer wall of each pin 30. A second gear 29 located inside the cover 3 is fixedly installed on the outer wall of the second rotating shaft 36. The first gear 26 and the second gear 29 are meshed with each other. The cam 4 is close to the grinding box 2. A groove 16 is provided on one side wall of the cam 16. A threaded rod 28 is rotatably connected between the inner walls of the two ends of the groove 16. A movable block 15 is provided on the outer wall of the threaded rod 28 and is threadedly connected to it. The movable block 15 is slidably connected to both inner walls of the groove 16. One end of the threaded rod 28 passes through one inner wall of the groove 16 and is fixedly installed with a knob 20 located outside the groove 16. A push rod 14 is fixedly installed on the side wall of the movable block 15 near the grinding box 2. A connecting frame 13 located between the cam 4 and the grinding box 2 is fixedly installed on the outer wall of the hollow shaft 5. The push rod 14 passes through the connecting frame 13 and is slidably connected to the inner wall of the connecting frame 13.

[0021] The housing 3 is equipped with a circulation mechanism connected to the grinding mechanism. The circulation mechanism includes a fixing block 12 fixedly installed on one side of the outer wall of the housing 3. A conveying box 6 is fixedly installed on the side wall of the fixing block 12 near the cam 4. A movable rod 21 is slidably connected to the outer wall of the conveying box 6 near the cam 4. A piston plate 19 slidably connected to the inner wall of the conveying box 6 is fixedly installed at the end of the movable rod 21 inside the conveying box 6. A piston plate 19 slidably connected to the inner wall of the conveying box 6 is fixedly installed at the end of the movable rod 21 outside the conveying box 6. A spring 18 is fixedly connected between the abutting plate 17 and one outer wall of the conveying box 6. The conveying box 6 is provided with an inlet pipe 8 and a drain pipe 11 that are connected to its interior. Both the inlet pipe 8 and the drain pipe 11 are equipped with a one-way valve. The ends of the inlet pipe 8 and the drain pipe 11 that are connected to the conveying box 6 are located on the side of the piston plate 19 away from the movable rod 21. The end of the inlet pipe 8 away from the conveying box 6 is connected to the cooling chamber 23, and the end of the drain pipe 11 away from the conveying box 6 is connected to the cooling tank 50.

[0022] The housing 3 is equipped with an auxiliary mechanism connected to the grinding mechanism. The auxiliary mechanism includes a partition 42 fixedly installed inside the housing 3. A reciprocating screw 41 rotatably connected to the partition 42 is passed through the partition 42. A fourth bevel gear 38 is fixedly installed on the top of the reciprocating screw 41. A third bevel gear 37 meshing with the fourth bevel gear 38 is fixedly installed at one end of the second rotating shaft 36 located inside the housing 3. Two connecting rods 40 slidably connected to the partition 42 are passed through the partition 42. The upper ends of the two connecting rods 40 are fixedly connected to the same first lifting block 39 that cooperates with the reciprocating screw 41. The lower ends of the two connecting rods 40 are fixedly connected to the same second lifting block 43. A mixing cylinder 45 rotatably connected to the second lifting block 43 is passed through the second lifting block 43. A square rod 44 slidably connected to the top of the mixing cylinder 45 is passed through the mixing cylinder 45. One end of the square rod 44 is connected to the reciprocating screw 41. The lower end of rod 41 is fixedly connected. A piston block 49, which is slidably connected to the inner wall of mixing cylinder 45, is fixedly installed at one end of square rod 44 located inside mixing cylinder 45. A through hole 33 connected to cooling tank 50 is opened on the top of equipment box 1. Mixing cylinder 45 passes through through hole 33. A mixing rod 46 located inside cooling tank 50 is fixedly installed on the outer wall of mixing cylinder 45. A second connecting pipe 48 and multiple first connecting pipes 47 connected to the interior of mixing cylinder 45 are provided on mixing cylinder 45. Multiple first connecting pipes 47 are inclined. A one-way valve is provided in the second connecting pipe 48 and multiple first connecting pipes 47. The end of the second connecting pipe 48 and multiple first connecting pipes 47 connected to mixing cylinder 45 is located below piston block 49. A water outlet pipe 9 connected to the interior of cooling tank 50 is provided on cooling tank 50. The end of water outlet pipe 9 away from cooling tank 50 is connected to cooling chamber 23.

[0023] When using this invention, a cooling element is pre-installed in the cooling tank 50. The material to be ground is continuously fed into the grinding chamber of the grinding box 2 through the feeding pipe 7 on the grinding box 2. Then, the servo motor 22 is started. The output shaft of the servo motor 22 drives the first rotating shaft 27 to rotate on a fixed axis. The first rotating shaft 27 synchronously drives the first gear 26 fixed on its outer wall and the cam 4 fixed at one end to rotate together. During the rotation of cam 4, its outer wall continuously and periodically presses against the abutment plate 17 on one side of the conveyor box 6. Under the reciprocating action of the elastic stretching and resetting of spring 18, the abutment plate 17 drives the movable rod 21 fixed thereto to make horizontal reciprocating linear motion. The movable rod 21 then drives the piston plate 19 inside the conveyor box 6 to slide synchronously along the inner wall of the conveyor box 6. This causes the low-temperature cooling water in the cooling tank 50 inside the equipment box 1 to be drawn into the conveyor box 6 through the water pump 11, and then pushed into the spiral cooling chamber 23 inside the grinding box 2 through the water inlet pipe 8. The low-temperature cooling water flows in the spiral cooling chamber 23 to complete heat exchange, quickly absorbing the large amount of heat generated by the collision and shearing of the rod pin 30, grinding media beads and materials during the grinding process. This effectively controls the grinding temperature inside the grinding box 2 and avoids the problems of changes in the physical and chemical properties of materials, increased wear of grinding media beads and decreased grinding efficiency caused by excessive temperature. The warm water after heat exchange flows back to the cooling tank 50 along the flow path, thereby realizing the circulation of cooling water between the cooling tank 50 and the cooling chamber 23.

[0024] Simultaneously, when the cam 4 rotates, the push rod 14, which is fixedly connected to the moving block 15, slides back and forth within the connecting frame 13, which is fixed to the hollow shaft 5, and continuously pushes and pulls the connecting frame 13. This causes the hollow shaft 5 to swing back and forth along the through-hole of the grinding box 2. The hollow shaft 5 then drives the grinding drum 32, which is fixed at one end inside the grinding box 2, to swing back and forth synchronously, thereby dynamically disturbing the grinding area inside the grinding box 2 and preventing local accumulation of materials and dead zones in the flow field within the grinding box 2. This can be achieved by manually turning the knob 20. The knob 20 drives the threaded rod 28 in the groove 16 of the cam 4 to rotate synchronously. Since the moving block 15 is threadedly connected to the threaded rod 28 and slides against the inner walls on both sides of the groove 16, the rotation of the threaded rod 28 drives the moving block 15 to slide horizontally in the groove 16, thereby changing the initial position of the push rod 14 which is fixedly connected to the moving block 15. The adjustment of the initial position of the push rod 14 directly changes its stroke in pushing the connecting frame 13, ultimately realizing the adjustment of the swing amplitude of the hollow shaft 5 and the grinding drum 32 to adapt to the grinding disturbance requirements of different materials.

[0025] At the same time, the first gear 26 on the first rotating shaft 27 meshes with the second gear 29 fixed on the outer wall of the second rotating shaft 36. The rotation of the first gear 26 drives the second gear 29 to rotate synchronously through the meshing of the teeth. The second gear 29 then drives the second rotating shaft 36 to rotate continuously on a fixed axis. The second rotating shaft 36 synchronously drives the grinding rotor 24, which is fixed at one end inside the grinding box 2, to rotate together. The first spiral blade 25 on the outer wall of the grinding rotor 24 rotates synchronously with it. During the rotation, it continuously pushes the material in the grinding box 2 to flow axially, stirs and disperses the material, and mixes the material with the grinding media beads. Furthermore, when the second rotating shaft 36 rotates, multiple second bevel gears 35 fixed on its outer wall rotate synchronously with it. The second bevel gears 35 and multiple first bevel gears 34 inside the grinding drum 32 maintain a continuous meshing state. The meshing transmission drives the multiple first bevel gears 34 to rotate around their own axes. The first bevel gears 34 then drive the pins 30 fixedly connected to them to rotate synchronously. Combined with the reciprocating oscillating revolution of the grinding drum 32 with the hollow shaft 5, the multiple pins 30 ultimately achieve a compound motion of reciprocating oscillating revolution with the grinding drum 32 while rotating at high speed around their own axes. This significantly increases the contact area and contact frequency between the pins 30 and the grinding media beads and materials, effectively improving the collision and shear strength between the grinding media beads and between the grinding media beads and the pins 30. It quickly breaks up the agglomerated structure of the materials and further agitates the grinding flow field, eliminates grinding dead angles, and improves the overall uniformity of grinding. The qualified materials after thorough grinding are continuously discharged through the discharge pipe 10 on the grinding box 2.

[0026] Furthermore, when the second rotating shaft 36 rotates, the third bevel gear 37, which is fixed at one end inside the cover 3, meshes with the fourth bevel gear 38, which is fixed at the top of the reciprocating screw 41. The rotation of the third bevel gear 37 drives the fourth bevel gear 38 to rotate synchronously through the meshing of the teeth. The fourth bevel gear 38 then drives the reciprocating screw 41 to rotate around the through-hole of the partition 42. Since the reciprocating screw 41 is engaged with the first lifting block 39, and the first lifting block 39 is fixedly connected to the second lifting block 43 through two connecting rods 40, and the connecting rods 40 are in sliding engagement with the partition 42, the rotation of the reciprocating screw 41 will drive the first lifting block 39 to move back and forth vertically. The first lifting block 39 drives the second lifting block 43 to move back and forth synchronously through the two connecting rods 40. The second lifting block 43 then drives the mixing cylinder 45, which is rotatably connected to it, to move back and forth within the cooling tank 50.

[0027] Meanwhile, the lower end of the reciprocating screw 41 is fixedly connected to the square rod 44. The square rod 44 is slidably connected to the mixing cylinder 45 and extends into the mixing cylinder 45. When the reciprocating screw 41 rotates, it will drive the square rod 44 to rotate synchronously. The square rod 44 will then drive the mixing cylinder 45 to rotate around its own axis, ultimately realizing the compound motion of the mixing cylinder 45 reciprocating up and down and rotating within the cooling tank 50. When the mixing cylinder 45 performs this compound motion, the piston block 49 inside it is fixedly connected to the square rod 44. Therefore, the piston block 49 will rotate with the square rod 44 and slide vertically up and down on the inner wall of the mixing cylinder 45. When the piston block 49 slides upward, a negative pressure is formed in the space below the piston block 49 inside the mixing cylinder 45. The cooling water in the cooling tank 50 is intermittently drawn into the mixing cylinder 45 through the second connecting pipe 48. When the piston block 49 slides downward, the cooling water in the mixing cylinder 45 is quickly squeezed and sprayed at high speed into the cooling tank 50 through multiple inclined first connecting pipes 47. With the help of the cooling elements in the cooling tank 50, the sprayed warm water can be quickly and fully mixed with the low-temperature cooling water in the cooling tank 50, which greatly improves the heat exchange efficiency of secondary cooling and achieves rapid cooling of the warm water. Meanwhile, the mixing rod 46 fixed to the outer wall of the mixing cylinder 45 will move back and forth and rotate synchronously in the cooling tank 50 along with the compound movement of the mixing cylinder 45, further agitating the cooling water in the cooling tank 50 in all directions, breaking up the temperature stratification of the water, keeping the temperature of the cooling water in the cooling tank 50 uniform, ensuring that the cooling water flowing back to the cooling chamber 23 is always at a low temperature, continuously and stably ensuring the cooling effect of the grinding box 2, and ultimately achieving energy-saving, efficient and stable operation of the entire grinding process.

[0028] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A grinding assembly for an energy-saving sand mill, comprising an equipment housing (1), characterized in that, The equipment box (1) is equipped with a cooling tank (50), and a grinding box (2) is provided above the equipment box (1). The grinding box (2) is equipped with a spiral cooling chamber (23). The grinding box (2) is equipped with a feeding pipe (7) and a discharge pipe (10). A cover (3) is fixedly installed on the top of the equipment box (1) on one side of the grinding box (2). A grinding mechanism is provided on the cover (3). A circulation mechanism connected to the grinding mechanism is provided on the cover (3). An auxiliary mechanism connected to the grinding mechanism is provided on the cover (3).

2. The grinding assembly for an energy-saving sand mill according to claim 1, characterized in that, The grinding mechanism includes a servo motor (22) fixedly installed on the inner wall of one side of the cover (3). The output shaft of the servo motor (22) is fixedly connected to a first rotating shaft (27). A first gear (26) is fixedly installed on the outer wall of the first rotating shaft (27). One end of the first rotating shaft (27) passes through the other inner wall of the cover (3) and extends outward. A cam (4) is fixedly installed on one end of the first rotating shaft (27). A hollow shaft (5) is rotatably connected to the outer wall of the grinding box (2) near the cover (3). A grinding cylinder (32) is fixedly installed on one end of the hollow shaft (5) inside the grinding box (2).

3. The grinding assembly for an energy-saving sand mill according to claim 2, characterized in that, The other end of the hollow shaft (5) penetrates one side of the outer wall of the cover (3) and extends into the cover (3). A second rotating shaft (36) is rotatably connected to the grinding drum (32). A grinding rotor (24) is fixedly installed at one end of the second rotating shaft (36) inside the grinding box (2). A first spiral blade (25) is fixedly installed on the outer wall of the grinding rotor (24). A plurality of second bevel gears (35) located inside the grinding drum (32) are fixedly installed on the outer wall of the second rotating shaft (36). The outer wall of the grinding drum (32) Multiple pins (30) are provided through the upper part. A first bevel gear (34) is fixedly installed at one end of each pin (30) inside the grinding cylinder (32). The first bevel gear (34) is meshed with a second bevel gear (35). A second spiral blade (31) located outside the grinding cylinder (32) is fixedly installed on the outer wall of each pin (30). A second gear (29) located inside the cover (3) is fixedly installed on the outer wall of the second shaft (36). The first gear (26) and the second gear (29) are meshed with each other.

4. The grinding assembly for an energy-saving sand mill according to claim 3, characterized in that, The cam (4) has a groove (16) on one side wall near the grinding box (2). A threaded rod (28) is rotatably connected between the inner walls of the two ends of the groove (16). A movable block (15) is threadedly connected to the outer wall of the threaded rod (28). The movable block (15) is slidably connected to both sides of the inner wall of the groove (16). One end of the threaded rod (28) passes through one side of the inner wall of the groove (16) and is fixedly installed with a knob (20) located outside the groove (16). A push rod (14) is fixedly installed on one side wall of the movable block (15) near the grinding box (2). A connecting frame (13) located between the cam (4) and the grinding box (2) is fixedly installed on the outer wall of the hollow shaft (5). The push rod (14) passes through the connecting frame (13) and is slidably connected to the inner wall of the connecting frame (13).

5. The grinding assembly for an energy-saving sand mill according to claim 4, characterized in that, The circulation mechanism includes a fixed block (12) fixedly installed on one side of the outer wall of the cover (3). A conveying box (6) is fixedly installed on the side wall of the fixed block (12) near the cam (4). A movable rod (21) is slidably connected to the outer wall of the conveying box (6) near the cam (4). A piston plate (19) is fixedly installed at the end of the movable rod (21) inside the conveying box (6) and slidably connected to the inner wall of the conveying box (6). A stop plate (17) is fixedly installed at the end of the movable rod (21) outside the conveying box (6) and abuts against the cam (4). A spring (18) is fixedly connected between the stop plate (17) and one side of the outer wall of the conveying box (6). A water inlet pipe (8) and a water pumping pipe (11) communicating with the inside of the conveying box (6) are provided on the conveying box (6).

6. The grinding assembly for an energy-saving sand mill according to claim 5, characterized in that, Both the inlet pipe (8) and the outlet pipe (11) are equipped with one-way valves. The ends of the inlet pipe (8) and the outlet pipe (11) that are connected to the delivery box (6) are located on the side of the piston plate (19) away from the movable rod (21). The end of the inlet pipe (8) away from the delivery box (6) is connected to the cooling chamber (23), and the end of the outlet pipe (11) away from the delivery box (6) is connected to the cooling tank (50).

7. The grinding assembly for an energy-saving sand mill according to claim 5, characterized in that, The auxiliary mechanism includes a partition (42) fixedly installed inside the housing (3). A reciprocating screw (41) rotatably connected to the partition (42) is provided through the partition (42). A fourth bevel gear (38) is fixedly installed on the top of the reciprocating screw (41). A third bevel gear (37) meshing with the fourth bevel gear (38) is fixedly installed at one end of the second rotating shaft (36) inside the housing (3). Two connecting rods (40) slidably connected to the partition (42) are provided through the partition (42). The upper ends of the two connecting rods (40) are fixedly connected to the same first lifting block (39) that cooperates with the reciprocating screw (41). The lower ends of the two connecting rods (40) are fixedly connected to the same second lifting block (39). The second lifting block (43) is provided with a mixing cylinder (45) rotatably connected to it. A square rod (44) is slidably connected to the top of the mixing cylinder (45). One end of the square rod (44) is fixedly connected to the lower end of the reciprocating screw (41). A piston block (49) is fixedly installed at the end of the square rod (44) inside the mixing cylinder (45) and slidably connected to the inner wall of the mixing cylinder (45). The top of the equipment box (1) is provided with a through hole (33) that communicates with the cooling tank (50). The mixing cylinder (45) passes through the through hole (33). A mixing rod (46) located inside the cooling tank (50) is fixedly installed on the outer wall of the mixing cylinder (45).

8. The grinding assembly for an energy-saving sand mill according to claim 7, characterized in that, The mixing cylinder (45) is provided with a second connecting pipe (48) and a plurality of first connecting pipes (47) that are connected to its interior. The plurality of first connecting pipes (47) are all inclined. The second connecting pipe (48) and the plurality of first connecting pipes (47) are all provided with a one-way valve. The end of the second connecting pipe (48) and the plurality of first connecting pipes (47) that are connected to the mixing cylinder (45) is located below the piston block (49). The cooling tank (50) is provided with a water outlet pipe (9) that is connected to its interior. The end of the water outlet pipe (9) that is away from the cooling tank (50) is connected to the cooling chamber (23).

Images