A high-precision grinding device with a multi-stage electromagnetic separation device and a control method

Abstract

The present invention relates to a high-precision grinding device with a multi-stage electromagnetic separation device and a control method, comprising a machine body; a shot hopper; a shot blasting wheel; a shot blasting channel; a recovery channel; a dust removal fan; a collection device; a recovery box; a multi-stage electromagnetic separation device, which is arranged inside the machine body, below the recovery box and above the shot hopper. The multi-stage electromagnetic separation device cooperates with the recovery box, and a third opening and closing structure is arranged at the bottom of the multi-stage electromagnetic separation device; a connecting pipe, which is arranged inside the machine body, below the recovery box and above the multi-stage electromagnetic separation device. The upper end of the connecting pipe is communicated with a first through port, and the lower end of the connecting pipe is communicated with the inside of the multi-stage electromagnetic separation device. The present invention solves the technical problem of how to improve the grinding precision of the grinding device on the ground by setting the multi-stage electromagnetic separation device.

Description

Technical Field

[0001] The present invention relates to the field of grinding equipment, and more particularly to a high-precision grinding equipment with a multi-stage electromagnetic separation device and a control method thereof. Background Art

[0002] Shot blasting machine is a processing technology that uses a shot blasting device to throw steel sand and steel shots at high speed onto the surface of a material object. Compared with other surface treatment technologies, it is faster and more effective. Using a shot blasting machine to treat the surface of concrete and stone can remove the loose substances on its surface and prepare for subsequent construction processes, and the steel shot material can be recycled.

[0003] In the prior art, the dust particles cleaned from the treated surface move together with the shot material. Among them, the smaller particles are sucked away by the dust collection device, and the larger particles enter the shot material hopper together with the shot material. In this way, the dust particles entering the shot blasting wheel will accelerate the wear of the shot blasting wheel, and due to their own material and shape, they will impact the treated surface when mixed with the shot material, affecting the uniformity of the treated surface. At the same time, after the shot material is impacted, steel thorns, pits and other defects will appear on its surface, damaging the surface of the shot blasting wheel and affecting the uniformity of the treated surface. Therefore, a high-precision grinding equipment with a multi-stage electromagnetic separation device is needed. Summary of the Invention

[0004] The technical problem to be solved by the present invention is how to improve the grinding accuracy of the grinding equipment for the ground, and a high-precision grinding equipment with a multi-stage electromagnetic separation device and a control method thereof are provided.

[0005] The technical solution adopted by the present invention to solve its technical problems is:

[0006] A high-precision grinding device with a multi-stage electromagnetic separation device, comprising a machine body; a shot hopper, which is arranged inside the machine body; a shot blasting wheel, which is arranged inside the machine body, below the shot hopper, and the shot blasting wheel is connected to the shot hopper through a pipeline and cooperates with the shot hopper; a shot blasting channel, which is a pipeline and is arranged inside the machine body, below the shot blasting wheel, and the upper end of the shot blasting channel cooperates with the shot blasting wheel, and the lower end of the shot blasting channel cooperates with the ground; a recovery channel, which is a curved pipeline and is arranged inside the machine body, on the side of the shot blasting channel; a dust removal fan, which is arranged inside the machine body, on the side of the recovery channel, and the air blowing port of the dust removal fan is arranged on the recovery channel; a collection device, which is arranged inside the machine body, on the side of the recovery channel, and the dust inlet of the collection device is arranged on the recovery channel, and the dust inlet of the collection device cooperates with the air blowing port of the dust removal fan; a recovery box, the upper end of which is open, and the recovery box is arranged inside the machine body, on the side of the recovery channel, above the shot hopper, and the recovery box cooperates with the upper port of the recovery channel, and a first through port communicating up and down is arranged on the bottom surface of the recovery box, and a first opening and closing structure is arranged in the first through port; a multi-stage electromagnetic separation device, which is arranged inside the machine body, below the recovery box, above the shot hopper, and the multi-stage electromagnetic separation device cooperates with the recovery box, and a third opening and closing structure is arranged at the bottom of the multi-stage electromagnetic separation device; a connecting pipeline, which is arranged inside the machine body, below the recovery box, above the multi-stage electromagnetic separation device, and the upper end of the connecting pipeline is connected to the first through port, and the lower end of the connecting pipeline is connected to the inside of the multi-stage electromagnetic separation device; the multi-stage electromagnetic separation device includes: a separation box, which is arranged inside the machine body, below the recovery box, above the shot hopper, and the separation box cooperates with the recovery box, and a third through port communicating up and down is arranged on the inner bottom surface of the separation box, and the third through port cooperates with the shot hopper; the third opening and closing structure is arranged in the third through port; the lower port of the connecting pipeline is arranged on the inner top surface of the separation box; an electromagnet separation structure, which is arranged inside the separation box, in the lower part of the separation box; a partition plate, which is arranged inside the separation box, in the middle of the separation box, above the electromagnet separation structure, a motor cavity is arranged in the partition plate, and a second through port communicating up and down is arranged on the partition plate, the second through port is arranged on the side of the motor cavity, and a second opening and closing structure is arranged in the second through port; a stirring device, which is arranged inside the separation box, on the upper end of the partition plate; a controller, which is arranged inside the machine body, and the controller is connected to the first opening and closing structure, the controller is connected to the second opening and closing structure, and the controller is connected to the third opening and closing structure. The shot blasting wheel cooperates with the shot hopper to accelerate the steel shots. The upper end of the shot blasting channel cooperates with the shot blasting wheel to enable the steel shots to enter the shot blasting channel. The lower end of the shot blasting channel cooperates with the ground to enable the steel shots to grind the ground. The dust inlet of the collection device cooperates with the air blowing port of the dust removal fan to enable the dust particles to enter the collection device. The recovery box cooperates with the upper port of the recovery channel to enable the steel shots passing through the recovery channel to enter the recovery box.The multi-stage electromagnetic separation device cooperates with the recycling box to separate the steel shots and dust particles in the recycling box. The separation box cooperates with the recycling box to make the steel shots and dust particles in the recycling box fall into the separation box. The third through port cooperates with the shot hopper to make the steel shots discharged from the third through port enter the shot hopper. The controller can control the opening and closing of the first opening and closing structure, the second opening and closing structure, and the third opening and closing structure to block or open the corresponding through ports, and a rotating plate can be used.

[0007] The steel shots in the shot hopper are thrown out at high speed by the shot blasting wheel. After passing through the shot blasting channel, the ground is polished. Then, the steel shots carry the dust particles and enter the recycling box under the action of the recycling channel. The smaller dust particles enter the collection device under the action of the dust removal fan. The steel shots and dust particles in the recycling box enter the stirring device through the connecting pipe to polish the surface of the steel shots and make the dust particles broken and smaller. Then, the steel shots and dust particles enter the electromagnetic separation structure, where the steel shots are adsorbed by the electromagnet and the dust particles are removed. Finally, the steel shots enter the shot hopper for recycling. A stirring device is set to polish the spikes and pits on the surface of the steel shots to prevent affecting the polishing effect of the steel shots and prevent the steel shots from damaging the shot blasting wheel. An electromagnetic separation structure is set to separate the steel shots and dust particles by magnetic force to prevent the dust particles from mixing in the steel shots and reducing the polishing effect of the polishing equipment.

[0008] Furthermore, the electromagnet separation structure includes: a central shaft, which is vertically arranged, located inside the separation box at the lower end of the partition plate, and at the axis of the separation box. A number of electromagnets are arranged on the central shaft; a second rotating motor, which is arranged inside the motor cavity. The rotating shaft of the second rotating motor passes downward through the partition plate and is fixed to the upper end of the central shaft. The rotating shaft of the second rotating motor is rotatably connected to the partition plate; an air suction pipe, which is arranged inside the machine body. One end of the air suction pipe is communicated with the inside of the separation box, and the other end is communicated with the collection device. The air suction port of the air suction pipe is arranged on the inner side of the separation box, below the partition plate, and is matched with the second through port. An air suction fan is arranged inside the air suction pipe, and a first screen is arranged at the air suction port of the air suction pipe. The mesh diameter of the first screen is smaller than the diameter of the shot; a guiding surface, which is a conical surface and is the bottom surface of the separation box. The lower port of the guiding surface is communicated with the third through port, and the upper port of the guiding surface is connected to the inner side of the separation box; a blowing pipe, which is arranged inside the machine body. One end of the blowing pipe is communicated with the inside of the separation box, and the other end is communicated with the outside. The blowing port of the blowing pipe is arranged on the inner side surface of the separation box, below the air suction port of the air suction pipe. The blowing port of the blowing pipe is arranged opposite to the air suction port of the air suction pipe, and the blowing port of the blowing pipe faces the lower port of the guiding surface. A blowing fan is arranged inside the blowing pipe, and a second screen is arranged at the blowing port of the blowing pipe. The mesh diameter of the second screen is smaller than the diameter of the shot. The air suction port of the air suction pipe is matched with the second through port to remove dust from the steel shot and dust particles discharged from the second through port.

[0009] The steel shot and dust particles in the stirring device enter the electromagnet separation structure through the second through port. Most of the dust particles are sucked away by the air suction fan and enter the collection device. The steel shot is adsorbed by the electromagnet and rotates driven by the central shaft. The dust particles are separated from the steel shot by centrifugal force. The airflow blown out by the blowing fan takes the dust particles in the electromagnet separation structure into the air suction pipe under the action of the guiding surface. Finally, the power supply of the electromagnet is disconnected, so that the steel shot on its surface falls off and enters the shot hopper under the action of the guiding surface. The central shaft and the electromagnet are provided to separate the dust particles and the steel shot by centrifugal force. The first screen and the second screen are provided to prevent the steel shot from entering the pipeline, causing loss to the steel shot and damage to the air suction fan or the blowing fan. Removing the dust particles from the steel shot can improve the precision of the grinding equipment.

[0010] Furthermore, the electromagnet separation structure includes: a number of auxiliary plates, which are disk-shaped, arranged inside the separation box, below the partition plate. The auxiliary plates are sleeved on the central shaft, and the axis of the auxiliary plates coincides with the axis of the central shaft; a number of electromagnets are arranged on the auxiliary plates, and the number of electromagnets cooperate with each other. The number of electromagnets cooperate with each other to prevent two electromagnets from facing each other with the same pole, weakening the attraction to the steel shot.

[0011] The centrifugal force on the steel shots on the outer side is relatively large, making them prone to falling off. A number of auxiliary plates are provided to increase the adsorption range of the electromagnet for the steel shots and prevent the steel shots from falling off. After disconnecting the power supply of the electromagnet, rotate the central shaft to rotate the auxiliary plates, so that the steel shots can be separated from the auxiliary plates.

[0012] Furthermore, the electromagnet separation structure includes: a number of ventilation holes are provided on the auxiliary plates, the ventilation holes communicate vertically, the ventilation holes are provided on the side of the electromagnet, and the diameter of the ventilation holes is larger than the diameter of the shot material.

[0013] The air flow blown out by the blowing fan passes through the ventilation holes to clean the dust particles in the area between the auxiliary plates. If the ventilation holes are not provided, after the electromagnet adsorbs the steel shots, an air flow blind area will be formed between the auxiliary plates, causing dust particles to accumulate. The ventilation holes are provided to clean the dust particles on the auxiliary plates. The diameter of the ventilation holes is set larger than the diameter of the shot material, so that the steel shots can fall through the ventilation holes after the electromagnet is powered off.

[0014] Furthermore, the stirring device includes: a stirring shaft, which is vertically arranged, located inside the separation box, above the partition plate, and at the axis of the separation box; a first rotating motor, which is arranged inside the motor cavity, and the rotating shaft of the first rotating motor passes upward through the partition plate and is fixed to the lower end of the stirring shaft, and the rotating shaft of the first rotating motor is rotatably connected to the partition plate; a number of rotating blades, which are arranged inside the separation box, above the partition plate, on the side of the stirring shaft, one end of the rotating blade is fixed to the stirring shaft, the rotating blade is inclined downward along the rotation direction of the stirring shaft, and the edge of the rotating blade is a blunt edge; a deceleration surface, which is a frosted surface, a wavy surface, and is the inner side surface of the separation box, located above the partition plate; a guiding surface, which is a concave arc surface, is the upper surface of the partition plate, and the lowest point of the guiding surface is connected to the second through port; a number of jet ports, the diameter of the jet ports is smaller than the diameter of the shot material, the jet ports are arranged on the inner side surface of the separation box, above the partition plate, and adjacent to the partition plate; a jet pipe, which is arranged inside the side wall of the separation box, the lower end of the jet pipe is communicated with a number of jet ports, the upper end is communicated with the upper end inside the separation box, a filter screen is arranged at the upper port of the jet pipe, and a jet fan is arranged inside the jet pipe.

[0015] The friction in the stirring device comes from two aspects: one is the friction generated by different moving directions; the other is the friction generated by different moving speeds between the inner and outer sides. The steel shots and large dust particles in the recycling box fall into the stirring device. Under the action of the stirring shaft and the rotating blades, they rub against each other, making the surface of the steel shots smooth and breaking the dust particles into smaller particles. The airflow generated by the jet blower enters the stirring device through the jet orifice, blowing the smaller dust particles at the bottom upward. Under the action of the filter screen, they fall onto the upper surface of the steel shots and dust particles, improving the crushing effect of the stirring device on the larger dust particles. The first rotating motor is a unidirectional motor, which rotates intermittently, increasing the mutual friction inside the stirring device. Since the dust particles entering the stirring device have not been removed by the dust removal fan and are relatively large in volume and mass, they need to be crushed for easy separation. The rotating blades are arranged to incline downward along the rotating direction of the stirring shaft and cooperate with the jet pipe to lift the steel shots and dust particles upward, preventing the steel shots and dust particles from accumulating at the bottom. The edge of the rotating blade is set as a blunt edge to prevent damage to the steel shots. A deceleration surface is set to strengthen the relative friction between the steel shots and dust particles in the stirring device, improving the crushing effect on the dust particles and the polishing effect on the steel shots. Removing the dust particles from the steel shots can improve the accuracy of the polishing equipment.

[0016] Further, the stirring device includes: the trough grooves of the wavy surface are in the vertical direction, and the distance between the peaks and troughs of the wavy surface is greater than the distance between adjacent peaks of the wavy surface; the jet orifice is arranged in the trough groove of the wavy surface.

[0017] As the number of smaller dust particles increases, the jet orifice may be blocked, preventing the airflow from flowing. The distance between the peaks and troughs of the wavy surface is set to be greater than the distance between adjacent peaks of the wavy surface to prevent the steel shots from blocking the trough groove of the wavy surface. The jet orifice is arranged in the trough groove of the wavy surface, enabling the airflow flowing out of the jet orifice to flow upward through the trough groove. The trough groove of the wavy surface is set in the vertical direction to increase the impact frequency of the steel shots and dust particles, enhancing the mutual friction between the steel shots and dust particles on the outer side of the stirring device.

[0018] Further, it includes: a refrigerator, the refrigerating end of the refrigerator is arranged in the jet pipe, and the heat - releasing end of the refrigerator is arranged in the outside air above the ground in front of the polishing equipment.

[0019] After the steel shots are shot - blasted, they will heat up due to impact, which will reduce the hardness of the steel shots, make them prone to deformation, and affect the polishing quality of the polishing equipment. A refrigerator is set to cool the inside of the stirring device through the airflow in the jet pipe to reduce the temperature of the steel shots. The heat - releasing end of the refrigerator is located above the ground in front of the polishing equipment to heat the ground to be polished, increasing its brittleness and making it easy to break.

[0020] Further, it includes: an image detection device, which is arranged on the machine body, adjacent to the lower port of the shot blasting channel, above the ground corresponding to the lower port of the shot blasting channel, and the image detection device faces the ground; a processor, which is arranged on the machine body, the processor is connected to the image detection device, and the processor is connected to the controller; a memory, which is arranged on the machine body, the memory is connected to the processor, the memory is connected to the image detection device, and executable instructions of the processor are stored in the memory.

[0021] The situation of the ground to be processed is recorded by the image detection device, and the data is intelligently analyzed by the processor. If the proportion of spherical pits formed by the impact of steel shots becomes smaller, it indicates that the stirring device does not completely crush the dust particles, and larger dust particles and steel shots are thrown out by the shot blasting wheel together. At this time, the stirring speed of the stirring device needs to be increased. Due to the different materials and shapes of larger dust particles, the shapes of the pits formed by their impact are different, resulting in different grinding effects on the ground and affecting the uniformity of the ground grinding by the grinding equipment.

[0022] A control method for a high-precision grinding equipment with a multi-stage electromagnetic separation device includes: after the grinding equipment is started, the following steps are implemented: Step 1: The image detection device records the grinding situation of the ground and transmits the information to the processor; Step 2: After the processor performs intelligent analysis and calculation based on the information transmitted by the image detection device, if the proportion of spherical pits in the newly generated pits on the ground becomes smaller, the traveling speed of the grinding equipment is adjusted through the controller until the grinding degree of the ground after grinding reaches the standard horizontal line. At the same time, the power of the first rotating motor is increased through the controller until the proportion of spherical pits in the newly generated pits on the ground returns to the standard proportion.

[0023] The hardness and material of different positions on the ground are different, which will cause the quantity and size of the dust particles generated by grinding to be different at different positions. At this time, the power of the stirring device needs to be adjusted accordingly to prevent larger dust particles from entering the shot blasting wheel and affecting the grinding effect of the grinding equipment. Ideally, since the steel shots are spherical, the proportion of spherical pits in the newly generated pits on the ground is 100%. The shape of larger dust particles is non-spherical, and the pits formed by their impact are also non-spherical pits. The existence of larger dust particles will make the grinding efficiency of the grinding equipment unstable, and changing the moving speed of the grinding equipment can balance it.

[0024] Further, it includes: the memory collects the processing records of the processor and the image records of the image detection device.

[0025] Through the processing records of the processor and the image records of the image detection device, the hardness and material of the ground at different positions can be analyzed, facilitating corresponding changes in subsequent construction.

[0026] Advantages of the present invention:

[0027] 1. A stirring device is provided, which can polish the uneven surface of the steel shot and crush the dust particles, providing conditions for subsequent separation, preventing damage to the shot blasting wheel, and preventing reduction of the polishing effect of the polishing equipment.

[0028] 2. An electromagnet separation structure is provided, which can separate the dust particles from the steel shot.

[0029] 3. An image detection device and a processor are provided, which can improve the polishing effect of the polishing equipment on the ground. Description of the Drawings

[0030] Figure 1 is a schematic diagram of the internal structure of the present invention;

[0031] Figure 2 is a schematic diagram of the internal structure of the stirring device of the present invention;

[0032] Figure 3 is a schematic diagram of the electromagnet separation structure of the present invention;

[0033] Description of the Reference Numerals:

[0034] 1. Machine body;

[0035] 2. Dust removal fan;

[0036] 3. Collection device;

[0037] 4. Recycling box;

[0038] 5. Separation box; 51. Stirring shaft; 52. Rotating blade; 53. Jet pipe; 54. Jet fan; 55. Refrigerator; 56. Jet port; 57. Partition board; 58. Central shaft; 59. Auxiliary disc; 510. Electromagnet; 511. Ventilation hole; 512. Suction pipe; 513. Blowing pipe;

[0039] 6. Shot hopper;

[0040] 7. Image detection device. Detailed Embodiments

[0041] The following will clearly and completely describe the concept and the resulting technical effects of the present invention in combination with the embodiments to fully understand the purpose, features, and effects of the present invention.

[0042] Embodiment 1:

[0043] AsFigure 1 As shown in the figure, a high-precision grinding device with a multi-stage electromagnetic separation device includes a machine body 1; a shot hopper 6, which is arranged inside the machine body 1; a shot blasting wheel, which is arranged inside the machine body 1, below the shot hopper 6, and the shot blasting wheel is connected to the shot hopper 6 through a pipeline, and the shot blasting wheel cooperates with the shot hopper 6; a shot blasting channel, which is a pipeline and is arranged inside the machine body 1, below the shot blasting wheel, the upper end of the shot blasting channel cooperates with the shot blasting wheel, and the lower end of the shot blasting channel cooperates with the ground; a recovery channel, which is a curved pipeline and is arranged inside the machine body 1, on the side of the shot blasting channel; a dust removal fan 2, which is arranged inside the machine body 1, on the side of the recovery channel, and the air outlet of the dust removal fan 2 is arranged on the recovery channel; a collection device 3, which is arranged inside the machine body 1, on the side of the recovery channel, the dust inlet of the collection device 3 is arranged on the recovery channel, and the dust inlet of the collection device 3 cooperates with the air outlet of the dust removal fan 2; a recovery box 4, the upper end of the recovery box 4 is open, the recovery box 4 is arranged inside the machine body 1, on the side of the recovery channel, above the shot hopper 6, the recovery box 4 cooperates with the upper port of the recovery channel, a first through port communicating up and down is arranged on the bottom surface of the recovery box 4, and a first opening and closing structure is arranged in the first through port; a multi-stage electromagnetic separation device, which is arranged inside the machine body 1, below the recovery box 4, above the shot hopper 6, the multi-stage electromagnetic separation device cooperates with the recovery box 4, and a third opening and closing structure is arranged at the bottom of the multi-stage electromagnetic separation device; a connecting pipeline, which is arranged inside the machine body 1, below the recovery box 4, above the multi-stage electromagnetic separation device, the upper end of the connecting pipeline is connected to the first through port, and the lower end of the connecting pipeline is connected to the inside of the multi-stage electromagnetic separation device; the multi-stage electromagnetic separation device includes: a separation box 5, which is arranged inside the machine body 1, below the recovery box 4, above the shot hopper 6, the separation box 5 cooperates with the recovery box 4, a third through port communicating up and down is arranged on the inner bottom surface of the separation box 5, and the third through port cooperates with the shot hopper 6; the third opening and closing structure is arranged in the third through port; the lower port of the connecting pipeline is arranged on the inner top surface of the separation box 5; an electromagnet separation structure, which is arranged inside the separation box 5, at the lower part of the separation box 5; a partition plate 57, which is arranged inside the separation box 5, in the middle of the separation box 5, above the electromagnet separation structure, a motor cavity is arranged inside the partition plate 57, a second through port communicating up and down is arranged on the partition plate 57, the second through port is arranged on the side of the motor cavity, and a second opening and closing structure is arranged in the second through port; a stirring device, which is arranged inside the separation box 5, at the upper end of the partition plate 57; a controller, which is arranged inside the machine body 1, the controller is connected to the first opening and closing structure, the controller is connected to the second opening and closing structure, and the controller is connected to the third opening and closing structure.

[0044] The steel shots in the shot hopper 6 are thrown out at high speed by the shot wheel. After passing through the shot blasting channel, they polish the ground. Then, the steel shots carrying dust particles enter the recovery box 4 under the action of the recovery channel. The smaller dust particles enter the collection device 3 under the action of the dust removal fan 2. The steel shots and dust particles in the recovery box 4 enter the mixing device through the connecting pipe, polish the surface of the steel shots, and break the dust particles into smaller pieces. Then, the steel shots and dust particles enter the electromagnet separation structure, where the steel shots are adsorbed by the electromagnet 510 and the dust particles are removed. Finally, the steel shots enter the shot hopper 6 for recycling. A mixing device is provided to polish the spikes and pits on the surface of the steel shots to prevent affecting the polishing effect of the steel shots and prevent the steel shots from damaging the shot wheel. An electromagnet separation structure is provided to separate the steel shots and dust particles by magnetic force to prevent the dust particles from mixing in the steel shots and reducing the polishing effect of the polishing equipment.

[0045] As Figure 3 shown, the electromagnet separation structure includes: a central shaft 58, which is vertically arranged, located at the lower end of the partition plate 57 inside the separation box 5 and at the axis of the separation box 5. A number of electromagnets 510 are arranged on the central shaft 58; a second rotating motor, which is arranged in the motor cavity. The rotating shaft of the second rotating motor passes downward through the partition plate 57 and is fixed to the upper end of the central shaft 58. The rotating shaft of the second rotating motor is rotatably connected to the partition plate 57; a suction pipe 512, which is arranged in the machine body 1. One end of the suction pipe 512 is communicated with the inside of the separation box 5, and the other end is communicated with the collection device 3. The suction port of the suction pipe 512 is arranged on the inner side surface of the separation box 5, below the partition plate 57 and is matched with the second through port. A suction fan is arranged in the suction pipe 512. A first screen is arranged at the suction port of the suction pipe 512, and the mesh diameter of the first screen is smaller than the diameter of the shot material; a guiding surface, which is a conical surface and is the bottom surface of the separation box 5. The lower port of the guiding surface is communicated with the third through port, and the upper port of the guiding surface is connected to the inner side surface of the separation box 5; a blowing pipe 513, which is arranged in the machine body 1. One end of the blowing pipe 513 is communicated with the inside of the separation box 5, and the other end is communicated with the outside. The blowing port of the blowing pipe 513 is arranged on the inner side surface of the separation box 5, below the suction port of the suction pipe 512. The blowing port of the blowing pipe 513 is arranged opposite to the suction port of the suction pipe 512, and the blowing port of the blowing pipe 513 faces the lower port of the guiding surface. A blowing fan is arranged in the blowing pipe 513. A second screen is arranged at the blowing port of the blowing pipe 513, and the mesh diameter of the second screen is smaller than the diameter of the shot material.

[0046] Steel shots and dust particles enter the electromagnet separation structure through the second through port. Most of the dust particles are sucked away by the suction fan and enter the collection device 3. The steel shots are adsorbed by the electromagnet 510 and rotate driven by the central shaft 58. The dust particles are separated from the steel shots by centrifugal force. The air flow blown out by the blowing fan, under the action of the guiding surface, brings the dust particles in the electromagnet separation structure into the suction duct 512. Finally, the power supply of the electromagnet 510 is disconnected, and the steel shots on its surface fall off and enter the shot hopper 6 under the action of the guiding surface. The central shaft 58 and the electromagnet 510 are provided to separate the dust particles and the steel shots by centrifugal force. The first screen and the second screen are provided to prevent the steel shots from entering the pipeline, causing loss of the steel shots and damage to the suction fan or the blowing fan. Removing the dust particles from the steel shots can improve the precision of the grinding equipment.

[0047] The electromagnet separation structure includes: a number of auxiliary discs 59. The auxiliary discs 59 are disc-shaped and are arranged in the separation box 5, below the partition plate 57. The auxiliary plates are sleeved on the central shaft 58, and the axis of the auxiliary plates coincides with the axis of the central shaft 58. A number of electromagnets 510 are arranged on the auxiliary plates, and the number of electromagnets 510 cooperate with each other.

[0048] The centrifugal force received by the steel shots on the outer side is larger and they are prone to falling off. A number of auxiliary discs 59 are provided to increase the adsorption range of the electromagnet 510 for the steel shots and prevent the steel shots from falling off. After the power supply of the electromagnet 510 is disconnected, the central shaft 58 is rotated to make the auxiliary discs 59 rotate, so that the steel shots can be separated from the auxiliary discs 59.

[0049] The electromagnet separation structure includes: a number of ventilation holes 511 are provided on the auxiliary disc 59. The number of ventilation holes 511 communicates up and down. The ventilation holes 511 are arranged on the side of the electromagnet 510, and the diameter of the ventilation holes 511 is larger than the diameter of the shot material.

[0050] The air flow blown out by the blowing fan passes through the ventilation holes 511 to clean the dust particles in the area between the auxiliary plates. If the ventilation holes 511 are not provided, after the electromagnet 510 adsorbs the steel shots, an air flow blind area will be formed between the auxiliary plates, causing the dust particles to accumulate. The ventilation holes 511 are provided to clean the dust particles on the auxiliary plates.

[0051] Such as Figure 2As shown in the figure, the stirring device includes: a stirring shaft 51, which is vertically arranged, located inside the separation box 5, above the upper end of the partition plate 57, and at the axis of the separation box 5; a first rotating motor, which is arranged inside the motor cavity, and the rotating shaft of the first rotating motor passes upward through the partition plate 57 and is fixed to the lower end of the stirring shaft 51, and the rotating shaft of the first rotating motor is rotatably connected to the partition plate 57; a number of rotating blades 52, which are arranged inside the separation box 5, above the partition plate 57, on the side of the stirring shaft 51, one end of the rotating blade 52 is fixed to the stirring shaft 51, the rotating blade 52 is inclined downward along the rotating direction of the stirring shaft 51, and the edge of the rotating blade 52 is a blunt edge; a deceleration surface, which is a frosted surface, a wavy surface, the inner side surface of the separation box 5, and is located above the partition plate 57; a guiding surface, which is a concave arc surface, the upper surface of the partition plate 57, and the lowest point of the guiding surface is connected to the second through port; a number of jet ports 56, the diameter of the jet port 56 is smaller than the diameter of the shot, the jet port 56 is arranged on the inner side surface of the separation box 5, above the partition plate 57, and adjacent to the partition plate 57; a jet pipe 53, which is arranged inside the side wall of the separation box 5, the lower end of the jet pipe 53 is communicated with a number of jet ports 56, the upper end is communicated with the upper end inside the separation box 5, a filter screen is arranged at the upper port of the jet pipe 53, and a jet blower 54 is arranged inside the jet pipe 53.

[0052] The friction in the stirring device comes from two aspects: one is the friction generated by different movement directions; the other is the friction generated by different movement speeds between the inner and outer sides. The steel shots and large dust particles in the recovery box 4 fall into the stirring device, and under the action of the stirring shaft and the rotating blades 52, they rub against each other, making the surface of the steel shots smooth and breaking the dust particles into smaller particles. The airflow generated by the jet blower 54 enters the stirring device through the jet ports 56, blows the smaller dust particles at the bottom to the upper part, and under the action of the filter screen, they fall onto the upper surfaces of the steel shots and dust particles, improving the crushing effect of the stirring device on the larger dust particles. The first rotating motor is a unidirectional motor, and its intermittent rotation can increase the mutual friction inside the stirring device. Since the dust particles entering the stirring device are not removed by the dust removal fan 2 and have a large volume and mass, they need to be crushed for convenient separation. The rotating blades 52 are arranged to be inclined downward along the rotating direction of the stirring shaft 51 and cooperate with the jet pipe 53 to lift the steel shots and dust particles upward to prevent the steel shots and dust particles from accumulating at the bottom. The edge of the rotating blade 52 is set as a blunt edge to prevent damage to the steel shots. A deceleration surface is set to strengthen the relative friction between the steel shots and dust particles in the stirring device, improve the crushing effect on the dust particles and the polishing effect on the steel shots. Removing the dust particles from the steel shots can improve the accuracy of the polishing equipment.

[0053] The stirring device includes: the trough groove of the wave surface is in the vertical direction, and the distance between the peak and trough of the wave surface is greater than the distance between adjacent peaks of the wave surface; the air jet port 56 is arranged in the trough groove of the wave surface.

[0054] As the number of smaller dust particles increases, the air jet port 56 may be blocked, preventing the air flow from flowing. The distance between the peak and trough of the wave surface is set to be greater than the distance between adjacent peaks of the wave surface to prevent the shot from blocking the trough groove of the wave surface. The air jet port 56 is arranged in the trough groove of the wave surface, enabling the air flow flowing out of the air jet port 56 to flow upward through the trough groove. The trough groove of the wave surface is set to be in the vertical direction to increase the impact frequency between the shot and the dust particles, enhancing the mutual friction between the shot and the dust particles outside the stirring device.

[0055] The grinding equipment includes: a cooler 55, the cooling end of the cooler 55 is arranged in the air jet pipe 53, and the heat dissipation end of the cooler 55 is arranged in the outside air, above the ground in front of the grinding equipment.

[0056] After the shot is thrown, it will heat up due to impact, which will reduce the hardness of the shot, make it easy to deform, and affect the grinding quality of the grinding equipment. The cooler 55 is set to reduce the temperature of the shot. The heat dissipation end of the cooler 55 is located above the ground in front of the grinding equipment to heat the ground to be ground, improve its brittleness, and make it easy to break.

[0057] The grinding equipment includes: an image detection device 7, the image detection device 7 is arranged on the machine body 1, adjacent to the lower port of the shot blasting channel, above the ground corresponding to the lower port of the shot blasting channel, and the image detection device 7 faces the ground; a processor, the processor is arranged on the machine body 1, the processor is connected to the image detection device 7, and the processor is connected to the controller; a memory, the memory is arranged on the machine body 1, the memory is connected to the processor, the memory is connected to the image detection device 7, and executable instructions of the processor are stored in the memory.

[0058] The situation of the ground to be processed is recorded by the image detection device 7, and the data is intelligently analyzed by the processor. If the proportion of the spherical pits formed by the impact of the shot becomes smaller, it indicates that the stirring device does not completely crush the dust particles, and larger dust particles and the shot are thrown out by the shot blasting wheel together. At this time, the stirring rate of the stirring device needs to be increased. Due to the different materials and shapes of the larger dust particles, the shapes of the pits generated by their impact are different, resulting in different grinding effects on the ground and affecting the uniformity of the ground grinding by the grinding equipment.

[0059] The working process of this embodiment is as follows: The steel shots in the shot hopper 6 are thrown out at high speed by the shot wheel. After passing through the shot blasting channel, they are used to polish the ground. Then, the steel shots carrying dust particles enter the recovery box 4 under the action of the recovery channel. The smaller dust particles enter the collection device 3 under the action of the dust removal fan 2. Open the first opening and closing structure, so that the steel shots and dust particles in the recovery box 4 enter the stirring device through the connecting pipe, and then close the first opening and closing structure. The stirring device polishes the surface of the steel shots and breaks the dust particles into smaller pieces. Then, open the second opening and closing structure, so that the steel shots and dust particles enter the electromagnetic separation structure, and then close the second opening and closing structure. The steel shots in the electromagnetic separation device are adsorbed by the electromagnet 510, and the dust particles therein are removed. Finally, open the third opening and closing structure, so that the steel shots enter the shot hopper 6 for recycling, and then close the third opening and closing structure.

[0060] The steel shots and large dust particles in the recovery box 4 fall into the stirring device. Under the action of the stirring shaft 51 and the rotating blades 52, they rub against each other to make the surface of the steel shots smooth and break the dust particles into smaller particles. The airflow generated by the jet fan 54 enters the stirring device through the jet port 56, blows the smaller dust particles at the bottom to the upper part, and under the action of the filter screen, they fall onto the upper surface of the steel shots and dust particles, improving the crushing effect of the stirring device on the larger dust particles.

[0061] The steel shots and dust particles in the stirring device enter the electromagnetic separation structure through the second through-port. Most of the dust particles therein are sucked away by the suction fan and enter the collection device 3. The steel shots therein are adsorbed by the electromagnet 510 and rotate under the drive of the central shaft 58. The dust particles are separated from the steel shots by centrifugal force. The airflow blown out by the blowing fan brings the dust particles in the electromagnetic separation structure into the suction pipe 512 under the action of the guiding surface. Finally, the power supply of the electromagnet 510 is disconnected, and the steel shots on its surface fall off and enter the shot hopper 6 under the action of the guiding surface. The airflow blown out by the blowing fan passes through the ventilation holes 511 to clean the dust particles in the area between the auxiliary plates.

[0062] A control method for a high-precision grinding device with a multi-stage electromagnetic separation device includes: after the grinding device is started, the following steps are implemented: Step 1: The image detection device 7 records the grinding condition of the ground and transmits the information to the processor; Step 2: After the processor performs intelligent analysis and calculation based on the information transmitted by the image detection device 7, if the proportion of spherical pits in the newly generated pits on the ground becomes smaller, the controller adjusts the traveling speed of the grinding device until the grinding degree of the ground after grinding reaches the standard horizontal line. At the same time, the controller increases the power of the first rotating motor until the proportion of spherical pits in the newly generated pits on the ground returns to the standard proportion.

[0063] The hardness and material of the ground vary at different locations, which will result in different numbers and sizes of dust particles generated by shot peening at different locations. At this time, the power of the stirring device needs to be adjusted accordingly to prevent larger dust particles from entering the shot peening wheel and affecting the grinding effect of the grinding equipment. Ideally, since the steel shot is spherical, the proportion of spherical pits in the newly generated pits on the ground is 100%. The shape of larger dust particles is non-spherical, and the pits generated by impact are also non-spherical pits. The presence of larger dust particles will make the grinding efficiency of the grinding equipment on the ground unstable. By changing the moving speed of the grinding equipment, it can be balanced.

[0064] It includes: the memory collects the processing records of the processor and the image records of the image detection device 7.

[0065] Through the processing records of the processor and the image records of the image detection device 7, the hardness and material of the ground at different locations can be analyzed, which is convenient for making corresponding changes in subsequent construction.

[0066] The above embodiments are only a part of the embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, other embodiments obtained by those skilled in the art without creative efforts all fall within the protection scope of the present invention.

Claims

1. A high-precision grinding device with a multi-stage electromagnetic separation device, comprising a machine body (1), characterized in that, Comprising: A shot hopper (6) disposed within the machine body (1); A shot blasting wheel disposed within the machine body (1), below the shot hopper (6), the shot blasting wheel being connected to the shot hopper (6) through a pipeline and cooperating with the shot hopper (6); A shot blasting channel which is a pipeline, disposed within the machine body (1), below the shot blasting wheel, the upper end of the shot blasting channel cooperating with the shot blasting wheel and the lower end of the shot blasting channel cooperating with the ground; A recovery channel which is a curved pipeline, disposed within the machine body (1), on the side of the shot blasting channel; A dust removal fan (2) disposed within the machine body (1), on the side of the recovery channel, the air outlet of the dust removal fan (2) being disposed on the recovery channel; A collection device (3) disposed within the machine body (1), on the side of the recovery channel, the dust inlet of the collection device (3) being disposed on the recovery channel, the dust inlet of the collection device (3) cooperating with the air outlet of the dust removal fan (2); A recovery box (4) having an open upper end, disposed within the machine body (1), on the side of the recovery channel, above the shot hopper (6), the recovery box (4) cooperating with the upper port of the recovery channel, a first through port communicating up and down being provided on the bottom surface of the recovery box (4), and a first opening and closing structure being provided within the first through port; A multi-stage electromagnetic separation device disposed within the machine body (1), below the recovery box (4), above the shot hopper (6), the multi-stage electromagnetic separation device cooperating with the recovery box (4), and a third opening and closing structure being provided at the bottom of the multi-stage electromagnetic separation device; A connecting pipeline disposed within the machine body (1), below the recovery box (4), above the multi-stage electromagnetic separation device, the upper end of the connecting pipeline being connected to the first through port and the lower end of the connecting pipeline being internally connected to the multi-stage electromagnetic separation device; The multi-stage electromagnetic separation device includes: a separation box (5) disposed inside the machine body (1), below the recovery box (4) and above the pellet hopper (6). The separation box (5) cooperates with the recovery box (4). A third through port communicating vertically is provided on the inner bottom surface of the separation box (5), and the third through port cooperates with the pellet hopper (6); the third opening and closing structure is disposed in the third through port; the lower port of the connecting pipe is disposed on the inner top surface of the separation box (5); an electromagnet separation structure disposed inside the separation box (5) and located at the lower part of the separation box (5); a partition plate (57) disposed inside the separation box (5), in the middle of the separation box (5) and above the electromagnet separation structure. A motor cavity is provided in the partition plate (57), and a second through port communicating vertically is provided on the partition plate (57). The second through port is disposed on the side of the motor cavity, and a second opening and closing structure is provided in the second through port; a stirring device disposed inside the separation box (5) and located at the upper end of the partition plate (57); a controller disposed inside the machine body (1), and the controller is connected to the first opening and closing structure, the controller is connected to the second opening and closing structure, and the controller is connected to the third opening and closing structure; The electromagnet separation structure includes: A central shaft (58) vertically disposed inside the separation box (5), at the lower end of the partition plate (57), at the axis of the separation box (5), and a plurality of electromagnets (510) are provided on the central shaft (58); A second rotating motor disposed in the motor cavity. The rotating shaft of the second rotating motor passes downward through the partition plate (57) and is fixed to the upper end of the central shaft (58), and the rotating shaft of the second rotating motor is rotatably connected to the partition plate (57); An air suction pipe (512) disposed inside the machine body (1). One end of the air suction pipe (512) is communicated with the inside of the separation box (5), and the other end is communicated with the collection device (3). The air suction port of the air suction pipe (512) is disposed on the inner side surface of the separation box (5), below the partition plate (57) and cooperates with the second through port. An air suction fan is provided in the air suction pipe (512), and a first screen is provided at the air suction port of the air suction pipe (512). The mesh diameter of the first screen is smaller than the diameter of the pellets; A guiding surface which is a conical surface, is the bottom surface of the separation box (5). The lower port of the guiding surface is communicated with the third through port, and the upper port of the guiding surface is connected to the inner side surface of the separation box (5); A blowing duct (513) is provided inside the machine body (1). One end of the blowing duct (513) communicates with the inside of the separation box (5), and the other end communicates with the outside. The air outlet of the blowing duct (513) is provided on the inner side surface of the separation box (5), below the air inlet of the suction duct (512). The air outlet of the blowing duct (513) is arranged opposite to the air inlet of the suction duct (512). The air outlet of the blowing duct (513) faces the lower port of the guiding surface. A blowing fan is arranged inside the blowing duct (513). A second screen is provided at the air outlet of the blowing duct (513), and the diameter of the mesh holes of the second screen is smaller than the diameter of the shot material. The electromagnet separation structure includes: A number of auxiliary plates (59), the auxiliary plates (59) are disc-shaped, the auxiliary plates (59) are arranged inside the separation box (5), below the partition plate (57), the auxiliary plates are sleeved on the central shaft (58), and the axis of the auxiliary plates coincides with the axis of the central shaft (58). The number of electromagnets (510) are arranged on the auxiliary plates, and the number of electromagnets (510) cooperate with each other. The electromagnet separation structure includes: A number of ventilation holes (511) are provided on the auxiliary plate (59), the number of ventilation holes (511) communicate vertically, the ventilation holes (511) are arranged on the side of the electromagnet (510), and the diameter of the ventilation holes (511) is larger than the diameter of the shot material. The stirring device includes: A stirring shaft (51), the stirring shaft (51) is arranged vertically, the stirring shaft (51) is arranged inside the separation box (5), above the partition plate (57), and the stirring shaft (51) is arranged at the axis of the separation box (5). A first rotating motor is arranged inside the motor cavity. The rotating shaft of the first rotating motor passes upward through the partition plate (57) and is fixed to the lower end of the stirring shaft (51). The rotating shaft of the first rotating motor is rotatably connected to the partition plate (57). A number of rotating blades (52) are arranged inside the separation box (5), above the partition plate (57), and on the side of the stirring shaft (51). One end of the rotating blade (52) is fixed to the stirring shaft (51). The rotating blade (52) is inclined downward along the rotating direction of the stirring shaft (51), and the edge of the rotating blade (52) is a blunt edge. A decelerating surface, the decelerating surface is a frosted surface, the decelerating surface is a wavy surface, the decelerating surface is the inner side surface of the separation box (5), and the decelerating surface is above the partition plate (57). A guiding surface, the guiding surface is a concave arc surface, the guiding surface is the upper surface of the partition plate (57), and the lowest point of the guiding surface is connected to the second through port. A plurality of jet nozzles (56), the diameter of the jet nozzles (56) being smaller than the diameter of the shot material, the jet nozzles (56) being arranged on the inner side surface of the separation box (5), above the partition plate (57) and adjacent to the partition plate (57); A jet pipe (53), the jet pipe (53) being arranged inside the side wall of the separation box (5), the lower end of the jet pipe (53) being communicated with the plurality of jet nozzles (56), the upper end being communicated with the upper end inside the separation box (5), a filter screen being arranged at the upper port of the jet pipe (53), and a jet blower (54) being arranged inside the jet pipe (53); The stirring device includes: The trough grooves of the wavy surface are in the vertical direction, and the distance between the wave peaks and troughs of the wavy surface is greater than the distance between adjacent wave peaks of the wavy surface; The jet nozzles (56) are arranged in the trough grooves of the wavy surface.

2. The high-precision grinding device with a multi-stage electromagnetic separation device according to claim 1, characterized in that, Comprising: A refrigerator (55), the refrigerating end of the refrigerator (55) being arranged inside the jet pipe (53), and the heat releasing end of the refrigerator (55) being arranged in the outside air, above the ground in front of the grinding device.

3. The high-precision grinding device with a multi-stage electromagnetic separation device according to claim 1, characterized in that, Comprising: An image detection device (7), the image detection device (7) being arranged on the machine body (1), adjacent to the lower port of the shot blasting channel, above the ground corresponding to the lower port of the shot blasting channel, and the image detection device (7) facing the ground; A processor, the processor being arranged on the machine body (1), the processor being connected to the image detection device (7), and the processor being connected to the controller; A memory, the memory being arranged on the machine body (1), the memory being connected to the processor, the memory being connected to the image detection device (7), and executable instructions of the processor being stored in the memory.

4. A control method for a high-precision grinding device with a multi-stage electromagnetic separation device applied to claim 3, characterized in that, Comprising: After the grinding device is started, the following steps are implemented: Step 1: The image detection device (7) records the grinding condition of the ground and transmits the information to the processor; Step 2: After the processor performs intelligent analysis and calculation based on the information transmitted by the image detection device (7), if the proportion of spherical pits in the newly generated pits on the ground becomes smaller, the traveling speed of the grinding device is adjusted through the controller until the grinding degree of the ground after grinding reaches the standard horizontal line. At the same time, the power of the first rotating motor is increased through the controller until the proportion of spherical pits in the newly generated pits on the ground returns to the standard proportion.

5. The control method of a high-precision grinding device with a multi-stage electromagnetic separation device according to claim 4, characterized in that, Comprising: The memory collects the processing records of the processor and the image records of the image detection device (7).

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