A zero-emission environmentally friendly grinding and polishing machine

Abstract

The present invention provides a zero-emission environmentally friendly grinding and polishing machine, comprising a grinding and polishing chamber, a dust suction device, an exhaust fan and a blowing device, wherein the dust suction device is connected to the grinding and polishing chamber; the exhaust fan is respectively connected to the dust suction device and the blowing device to draw the exhaust gas filtered by the dust suction device into the blowing device; the blowing device is also connected to the grinding and polishing chamber to guide the exhaust gas back into the grinding and polishing chamber, and use the exhaust gas to blow the dust at the opening of the grinding and polishing chamber into the grinding and polishing chamber; the grinding and polishing chamber is connected to a circulating filtration system, so that the dust-containing gas in the grinding and polishing chamber circulates along the polishing chamber, the dust suction device, the exhaust fan, the blowing device, and the polishing chamber, thereby realizing the circulating filtration of the dust-containing gas and achieving zero emission of dust, thereby avoiding dust pollution to the atmospheric environment.

Description

Technical Field

[0001] The invention relates to the technical field of mechanical manufacturing, in particular to a zero-emission environmentally friendly grinding and polishing machine. Background Art

[0002] The dust-containing gas generated during the working process of the existing grinding and polishing machine is generally extracted, purified and filtered by a dust suction device or a dust suction system outside the polishing machine before being discharged into the atmosphere. However, due to the structural design and performance of the dust suction device or the dust suction system, the actual dust removal rate of the dust suction device or the dust suction system is difficult to reach 100%. Therefore, at present, the dust content in the exhaust gas treated by the dust suction device or the dust suction system only meets the emission standard before the exhaust gas is allowed to be discharged into the atmosphere; however, long-term continuous emission will eventually cause varying degrees of pollution to the atmospheric environment. In order to avoid aggravated pollution, how to achieve zero dust emission and completely eliminate the pollution of the dust of the grinding and polishing machine to the atmospheric environment has become an important research direction in the design of today's grinding and polishing machines. Summary of the invention

[0003] In view of the above-mentioned deficiencies in the prior art, an object of the present invention is to provide a zero-emission environmentally friendly grinding and polishing machine with a simple structure and capable of achieving zero emissions.

[0004] The present invention achieves the above object by:

[0005] The present invention discloses a zero-emission environmentally friendly grinding and polishing machine, comprising a grinding and polishing chamber, a dust suction device, an exhaust fan and a blowing device, wherein the dust suction device is connected to the grinding and polishing chamber; the exhaust fan is respectively connected to the dust suction device and the blowing device to draw the exhaust gas filtered by the dust suction device into the blowing device; the blowing device is also connected to the grinding and polishing chamber to guide the exhaust gas back and blow it into the grinding and polishing chamber, and use the exhaust gas to blow the dust at the opening of the grinding and polishing chamber into the grinding and polishing chamber.

[0006] Furthermore, the blowing device includes a return air main duct, an upper return air branch duct, a side return air branch duct and a lower return air branch duct, the return air main duct is connected to the exhaust fan; the upper return air branch duct, the side return air branch duct, and the lower return air branch duct are all arranged on one side of the return air main duct and are connected to the return air main duct; the upper return air branch duct, the side return air branch duct, and the lower return air branch duct are also located around the opening of the grinding and polishing chamber, and are connected to the inside of the grinding and polishing chamber.

[0007] Furthermore, the dust suction device includes a suction diversion box and a dust collecting filter, the dust collecting filter is respectively connected to the air outlet of the suction diversion box and the exhaust fan, and the air inlet of the suction diversion box is connected to the grinding and polishing chamber.

[0008] Furthermore, the dust collecting filter includes a buffer sedimentation chamber, a washing chamber and a water vapor separation chamber which are connected in sequence, the water vapor separation chamber is connected to the exhaust fan, the buffer sedimentation chamber is connected to the air outlet of the suction diversion box, and the water vapor separation chamber is provided with a self-excited vortex filter device, a first-level water baffle, a second-level water baffle and a third-level water baffle from bottom to top.

[0009] Further, a grinding wheel is provided in the grinding and polishing chamber, and a turbulence disruptor is provided above the grinding wheel, and the turbulence disruptor includes a limit frame, a plurality of wind collecting guide vanes and a mounting frame that cooperate with each other to block turbulence and change the direction of turbulent flow, and an adjusting screw that drives the mounting frame to move up and down; the limit frame is fixed on the top wall inside the grinding and polishing chamber, and the mounting frame is movably connected to the inner side of the limit frame; the plurality of wind collecting guide vanes are installed on the mounting frame, and the plurality of wind collecting guide vanes are provided with grooves that are assembled with the outer edge of the grinding wheel; one end of the adjusting screw is fixedly connected to the mounting frame, and the other end of the adjusting screw passes through the grinding and polishing chamber and is movably connected to the grinding and polishing chamber. Further, a grinding wheel, a rear guide wheel and a lower guide wheel are provided in the grinding and polishing chamber, and the grinding wheel, the rear guide wheel and the lower guide wheel are connected by an abrasive belt.

[0010] Furthermore, it also includes a motor and a transmission shaft, the motor is located outside the grinding and polishing chamber and the circulating filtration system, a bearing seat for mounting the transmission shaft is provided on the outside of the blowing device, one end of the transmission shaft extends into the grinding and polishing chamber to be connected to the grinding wheel in the grinding and polishing chamber; a transmission wheel is also fixedly provided on the transmission shaft, and the transmission wheel is connected to the output end of the motor through a belt.

[0011] Furthermore, a dry dust collecting box for collecting dust is also provided on the inner bottom surface of the grinding and polishing chamber.

[0012] Furthermore, it also includes a machine base, and the grinding and polishing chamber, the dust suction device, the exhaust fan, the blowing device and the motor are all arranged on the machine base.

[0013] Beneficial effects of the invention: The invention provides a zero-emission environmentally friendly grinding and polishing machine. A dust suction device, an exhaust fan and a blowing device are arranged on the grinding and polishing machine, and the grinding and polishing chamber is connected with the dust suction device and the blowing device respectively, and the exhaust fan is connected with the dust suction device and the blowing device respectively. When the grinding and polishing machine is working, the dust suction device sucks in the dust-containing gas in the grinding and polishing chamber, thereby filtering and depositing and collecting the dust in the gas. If there is dust that cannot be deposited, the dust is sucked into the blowing device by the exhaust fan along with the filtered exhaust gas, and the blowing device guides the exhaust gas back and blows it into the grinding and polishing chamber, and uses the exhaust gas to blow the dust at the opening of the grinding and polishing chamber into the grinding and polishing chamber, so as to prevent the dust in the grinding and polishing chamber and the dust in the exhaust gas from flowing into the atmospheric environment, thereby achieving zero dust emission. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0015] Figure 1 It is a schematic structural side view of a zero-emission environmentally friendly grinding and polishing machine in one embodiment of the present invention;

[0016] Figure 2 It is a structural schematic diagram of the blowing device in the present invention;

[0017] Figure 3 It is a schematic diagram of the structure of a zero-emission environmentally friendly grinding and polishing machine in one embodiment of the present invention;

[0018] Figure 4 It is a side view structural schematic diagram of the turbulence disruptor in the present invention;

[0019] Figure 5 It is a schematic diagram of the main structure of the turbulence disruptor in the present invention.

[0020] In the figure, 1 is a grinding and polishing bin, 2 is a dust suction device, 3 is an exhaust fan, 4 is an air blowing device, 5 is a return air main duct, 6 is an upper return air branch duct, 7 is a side return air branch duct, 8 is a lower return air branch duct, 9 is a dust filter, 10 is a connecting pipe, 11 is a buffer sedimentation chamber, 12 is a washing chamber, 13 is a water-gas separation chamber, 14 is a self-excited vortex filter, 15 is a primary water baffle, 16 is a secondary water baffle, 17 is a tertiary water baffle, 18 is a grinding wheel, 19 is a turbulence disruptor, 20 is a limit frame, 21 is a wind guide vane, 22 is an adjusting screw, 23 is an installation frame, 24 is a groove, 25 is an air suction diversion box, 26 is a rear guide wheel, 27 is a lower guide wheel, 28 is an abrasive belt, 29 is a motor, 30 is a transmission shaft, 31 is a bearing seat, 32 is a transmission wheel, 33 is a belt, 34 is a machine base, and 35 is a dry collection box. DETAILED DESCRIPTION

[0021] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with examples and drawings. The schematic implementation scheme of the present invention and its description are only used to analyze the present invention and are not intended to limit the present invention.

[0022] Figure 1-Figure 3 The specific structure of a zero-emission environmentally friendly grinding and polishing machine in one embodiment of the present invention is shown, including a grinding and polishing chamber 1, a dust suction device 2, an exhaust fan 3 and a blowing device 4, wherein the dust suction device 2 is connected to the grinding and polishing chamber 1, and the exhaust fan 3 is connected to the dust suction device 2 and the blowing device 4 respectively, so as to draw the exhaust gas filtered by the dust suction device 2 into the blowing device 4, and the blowing device 4 is also connected to the grinding and polishing chamber 1 to guide the exhaust gas back and blow it into the grinding and polishing chamber 1, and use the exhaust gas to blow the dust at the opening of the grinding and polishing chamber 1 into the grinding and polishing chamber.

[0023] By arranging the dust suction device 2, the exhaust fan 3 and the blowing device on the grinding and polishing machine, and making the grinding and polishing chamber 1 connected with the dust suction device 2 and the blowing device 4 respectively, and making the exhaust fan 3 connected with the dust suction device 2 and the blowing device 4 respectively, when the grinding and polishing machine is working, the dust suction device 2 sucks in the dust-containing gas in the grinding and polishing chamber 1, thereby filtering and collecting the dust in the gas. If there is dust that cannot be deposited, the dust is sucked into the blowing device 4 by the exhaust fan 3 along with the filtered exhaust gas, and the blowing device 4 guides the exhaust gas back into the grinding and polishing chamber 1, and uses the exhaust gas to blow the dust at the opening of the grinding and polishing chamber 1 into the grinding and polishing chamber 1, so as to prevent the dust in the grinding and polishing chamber 1 and the dust in the exhaust gas from flowing into the atmospheric environment, thereby achieving zero dust emission.

[0024] Furthermore, if Figure 1-Figure 3As shown, the blowing device 4 specifically includes a return air main duct 5, an upper return air branch duct 6, a side return air branch duct 7 and a lower return air branch duct 8, wherein the upper return air branch duct 6, the side return air branch duct 7 and the lower return air branch duct 8 are arranged on one side of the return air main duct 5 and are located inside the opening periphery of the grinding and polishing chamber 1; the return air main duct 5 is respectively connected with the exhaust fan 3, the upper return air branch duct 6, the side return air branch duct 7, and the lower return air branch duct 8, and is used to introduce the exhaust gas sucked in by the exhaust fan 3 into the upper return air branch duct 6, the side return air branch duct 7, The lower return air branch duct 8; the upper return air branch duct 6, the side return air branch duct 7, and the lower return air branch duct 8 are also connected to the interior of the grinding and polishing chamber 1, and are used to guide the exhaust gas back and blow it into the grinding and polishing chamber 1, and use the exhaust gas to blow the dust at the opening of the grinding and polishing chamber 1 into the grinding and polishing chamber 1, thereby preventing the dust in the exhaust gas and the dust in the grinding and polishing chamber 1 from entering the atmospheric environment, thereby achieving zero emissions, and the dust in the exhaust gas can also be re-sucked and filtered by the dust suction device 2, thereby achieving cyclic filtration of the dust.

[0025] Furthermore, if Figure 1 As shown, the dust collecting device 2 includes a suction diverter box 25 and a dust collecting filter 9, wherein the dust collecting filter 9 is mainly used to filter and deposit dust or debris in the dust-containing gas; the air inlet of the suction diverter box 25 is connected to the polishing chamber 1, and the air outlet of the suction diverter box 25 is connected to the dust collecting filter 9 through a connecting pipe 10, so as to connect the dust collecting filter 9 with the polishing chamber 1; the dust collecting filter 9 is also connected to the exhaust fan 3. The exhaust fan 3 is mainly used to inhale dust-containing gas, filter the gas in the dust collecting filter 9, and pump the tail gas filtered by the dust collecting filter 9 into the blowing device 4, and form a negative pressure at the air inlet of the suction diverter box 25 by exhausting air, so as to inhale the dust-containing gas in the polishing chamber 1 into the dust collecting device 2. Among them, the suction diversion box 25 is located at the inner upper corner of the grinding and polishing chamber 1, behind the grinding wheel 18, and the suspended dust is sucked up by the suction diversion box 25, and the heavier dust falls into the dry collection box 35 and is collected by the dry collection box 35; the suction diversion box 25 and the dry collection box 35 are arranged roughly diagonally in the grinding and polishing chamber 1. In addition, the suction port of the suction diversion box 25 is a plurality of narrow strip holes, which are evenly distributed, and three of them are close to the grinding wheel 18, so as to ensure that the suspended fine dust mainly generated by the grinding wheel 18 is sucked away. The uniform distribution of the strip holes is conducive to ensuring that the dust in various places in the grinding and polishing chamber 1 can be well sucked away.

[0026] Furthermore, in this embodiment, the dust filter 9 is actually a wet dust filter. Compared with a dry dust filter, a wet dust filter can not only filter and collect extremely fine dust particles and effectively eliminate static electricity carried by dust, but also eliminate sparks generated when polishing workpieces made of iron or stainless steel and attached to dust, and has the advantages of high filtering effect and safety. Figure 1As shown, the dust collecting filter 9 is provided with a buffer settling chamber 11, a washing chamber 12 and a water-gas separation chamber 13, wherein the buffer settling chamber 11, the washing chamber 12 and the water-gas separation chamber 13 are sequentially connected, wherein the buffer settling chamber 11 is also connected with the air suction diversion box 25 through the connecting pipe 10, so as to guide the dust-containing gas sucked by the air suction diversion box 25 into the washing chamber 12; the washing chamber 12 is loaded with washing liquid, and the washing liquid forms dense droplets by friction with the dust-containing gas flowing at a high speed, and passes through the dense droplets. The collecting droplets capture and filter the dust in the dust-laden gas; when the dust-laden gas flows through the washing chamber 12 at high speed, it will produce a certain impact force on the washing liquid, causing dense droplets or washing liquid to be splashed, and the dense droplets or washing liquid usually contain dust. In order to improve the filtering effect, it is necessary to use the water-gas separation chamber 13 to separate the dense droplets or washing liquid in the gas-water mixture; the water-gas separation chamber 13 is also connected to the exhaust fan 3, so as to enable the exhaust fan 3 to draw the purified exhaust gas into the return air main duct 5. In order to realize the function of water-gas separation, as shown in the figure, a self-excited vortex filter device 14, a first-level water baffle 15, a second-level water baffle 16, and a third-level water baffle 17 are respectively provided in the water-gas separation chamber 13 from bottom to top, wherein the first-level water baffle 15, the second-level water baffle 16, and the third-level water baffle 17 are all arranged obliquely, and a vertically downward drip end is also arranged at the lower end of the baffle, and the first-level water baffle 15 is also connected to the self-excited vortex filter device 14; wherein the self-excited vortex filter device 14 is used to make the gas-water mixture and the splashed dense droplets or washing liquid form a vortex together, thereby generating inertial centrifugal force, because the mass of dust, dense droplets, and washing liquid are heavier than that of gas, therefore, under the action of inertial centrifugal force, the clean gas is easily thrown to the outside of the vortex, while the dust and dense droplets or washing liquid are bundled together And it is located in the vortex, and when it reaches a certain density, it will fall into the washing liquid device, so that the filtered gas is effectively separated; the vortex swirls upward under the action of the exhaust fan 3 and passes through the first-level water baffle 15, the second-level water baffle 16, and the third-level water baffle 17. At this time, the first-level water baffle 15, the second-level water baffle 16, and the third-level water baffle 17 contact the vortex, so that the dense droplets or washing liquid in the vortex are attached to the baffle, thereby separating the clean gas from the dense droplets or washing liquid, and the separated clean tail gas continues to swirl upward, and then is sucked into the return air main duct 5 by the exhaust fan 3, and the dense droplets or washing liquid attached to the inclined baffle flow downward to the drip end along the inclined surface of the baffle under the action of gravity, and drips from the drip end to the lower baffle, or drips back into the washing liquid, and the water gas separation effect is better. Among them, the washing liquid can be any ordinary clean water or some corresponding special solvent solutions.

[0027] Furthermore, if Figure 1 , 4As shown in Figures 5 and 6, in this embodiment, a grinding wheel 18 and a turbulence disruptor 19 are provided in the grinding and polishing chamber 1, wherein the grinding wheel 18 is mainly used to cooperate with the corresponding guide wheels in the grinding and polishing chamber 1, such as the rear guide wheel 26 and the lower guide wheel 27 in this embodiment, so as to drive the sanding belt 28 used for grinding and polishing the workpiece to roll; the turbulence disruptor 19 is arranged above the grinding wheel 18, and is used to block and weaken the air turbulence generated when the grinding wheel 18 rotates at a high speed, so as to eliminate the problem of dust flying caused by the air turbulence and ensure the collection of dust. In this embodiment, the turbulence disruptor 19 includes a limit frame 20, a plurality of wind collecting guide vanes 21 and a mounting frame 23, which cooperate with each other to block turbulence and change the direction of turbulent flow, and an adjusting screw 22 for driving the mounting frame 23 to move up and down, wherein the limit frame 20 is fixed on the inner top wall of the grinding and polishing chamber 1; the plurality of wind collecting guide vanes 21 are fixedly mounted on the mounting frame 23, and the plurality of wind collecting guide vanes 21 are each provided with a groove 24 matching the outer edge of the grinding wheel 18; the mounting frame 23 is movably connected to the inner side of the limit frame 20; one end of the adjusting screw 22 is fixedly connected to the mounting frame 23, and the other end of the adjusting screw 22 passes through the grinding and polishing chamber 1 and is movably connected to the grinding and polishing chamber 1; by twisting the adjusting screw 22, the adjusting screw 22 drives the mounting frame 23 to move smoothly up and down along the inner side of the limit frame 20, thereby adjusting the position of the wind collecting guide vanes 21 to adapt to grinding wheels of different sizes.

[0028] Furthermore, the shape of the limit frame 20 and the installation frame 23 is roughly "U"-shaped, and they are both connected by front and rear panels and a baffle connecting the front and rear panels, wherein the openings of the limit frame 20 and the installation frame 23 correspond to the narrow end of the suction diversion box 25 in the grinding and polishing chamber 1, so that the turbulent air flowing out of the opening is sucked into the suction diversion box 25; the front and rear panels of the installation frame 23 are fixedly connected to the several air collecting guide vanes 21; one end of the adjusting screw 22 is fixedly connected to the top side of the front and rear panels of the installation frame 23 through a connecting support rod; the baffle is used to block the turbulent air flowing out of the air collecting guide vane 21, prevent the turbulent air from flowing to the outlet of the upper return air branch duct 6, and cooperate with the internal top wall of the grinding and polishing chamber 1 to force the turbulent air to flow out from the opening. The working principle of the turbulence disruptor 19 is as follows: by matching the grooves 24 on the plurality of air collecting guides 21 with the outer edge of the grinding wheel 18, it is possible to ensure that the grinding wheel 18 can rotate smoothly and reduce the gap between the air collecting guides 21 and the grinding wheel 18, thereby preventing turbulence from flowing out of the gap and causing dust to be blown out: when the grinding wheel 18 rotates at a high speed, it will drive the turbulent air formed around the grinding wheel 18 to flow through the turbulence disruptor 19 , so that the air collecting guide vane 21 blocks the air turbulence; the blocked air turbulence is pushed by the turbulence behind it and flows upward along the wind guide surface of the air collecting guide vane 21, thereby flowing out of the air collecting guide vane 21; the baffle of the mounting frame 23 and the baffle of the limiting frame 20 block the turbulence flowing out of the air collecting guide vane 21, thereby preventing the air turbulence from flowing toward the upper return air branch duct 6. At the same time, the baffle also cooperates with the internal top wall of the grinding and polishing chamber 1, forcing the air turbulence to flow toward the opening of the turbulence disruptor, thereby flowing out of the turbulence disruptor.

[0029] Furthermore, if Figure 1 As shown, the grinding and polishing chamber 1 is also provided with a suction diverter box 25 for balancing the airflow, the suction diverter box 25 is roughly cone-shaped, and the wide end of the suction diverter box 25 is connected to the dust collection device 2, and the narrow end of the suction diverter box 25 is located on one side of the turbulent outflow of the turbulence disruptor 19, and the suction diverter box 25 is also provided with a plurality of inlets, and is connected with the interior of the grinding and polishing chamber 1 through the inlets, so that the dust collection device 2 is connected with the interior of the grinding and polishing chamber 1; the dust-containing gas in the grinding and polishing chamber 1 and the dust-containing turbulent flow derived from the turbulence disruptor 19 enter the interior of the suction diverter box 25 through the inlet, and the suction diverter box 25 adjusts the airflow velocity of the dust-containing gas and the dust-containing turbulent flow through its structure, thereby achieving airflow balance, so that the suction effect and efficiency of the dust collection device 2 are optimized.

[0030] Furthermore, if Figure 1 , Figure 3 As shown, a rear guide wheel 26 and a lower guide wheel 27 are further provided in the grinding and polishing chamber 1. The grinding wheel 18, the rear guide wheel 26 and the lower guide wheel 27 are connected by a sanding belt 28. The grinding wheel 18, the rear guide wheel 26 and the lower guide wheel 27 cooperate with each other to tension and drive the roller of the sanding belt 28, so as to grind and polish the workpiece by using the rolling sanding belt 28. Of course, one guide wheel can also be used to cooperate with the grinding wheel 18 to enable the sanding belt 28 to achieve the above function, but using two guide wheels can also enable the sanding belt 28 to grind and polish the narrow parts of the workpiece to be processed.

[0031] Furthermore, if Figure 3 As shown, the grinding and polishing machine also includes a motor 29 and a transmission shaft 30. The motor 29 is arranged outside the grinding and polishing chamber 1 to prevent the sparks generated when the motor 29 is running from igniting the dust; the outer side of the blowing device 4 is provided with a bearing seat 31 for mounting the transmission shaft 30, and the bearing seat 31 is specifically arranged on the outer side of the return air main duct 5. One end of the transmission shaft extends into the grinding and polishing chamber 1 to be connected to the grinding wheel 18 in the grinding and polishing chamber. A transmission wheel 32 is fixedly provided on the transmission shaft 30, and the transmission wheel 32 is connected to the output end of the motor 29 through a belt 33.

[0032] Furthermore, if Figure 1 As shown, the inner bottom surface of the grinding and polishing chamber 1 is also provided with a dry collection box 35 for collecting dust, and the dry collection box 35 is actually a dry dust filter; the grinding and polishing machine also includes a machine base 34, and the grinding and polishing chamber 1, the dust suction device 2, the exhaust fan 3, the blowing device 4 and the motor 29 are all arranged on the machine base 34.

[0033] Furthermore, in this embodiment, if Figure 3 As shown, the polishing machine is actually provided with two groups of polishing equipment that are symmetrical on both sides. The two groups of polishing equipment are both provided on the machine base 34 and are symmetrically arranged with each other. Each group of polishing equipment includes the polishing chamber 1 and the circulating filtration system. The motor 29 is specifically provided between the two polishing chambers 1. The two ends of the transmission shaft 30 are respectively connected to the grinding wheels 18 in the two polishing chambers 1. The transmission shaft 30 is fixed with a transmission wheel 32, and the transmission wheel 32 is connected to the output end of the motor 29 through a belt 33. In this way, the motor and the transmission system outside the polishing chamber 1 will not be polluted by the dust produced by grinding, so that they can work stably.

[0034] It can be understood that the above embodiments only express the preferred implementation mode of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the patent scope of the present invention; it should be pointed out that for ordinary technicians in this field, without departing from the concept of the present invention, the above technical features can be freely combined, and several deformations and improvements can be made, which all belong to the protection scope of the present invention. Specifically, the present invention achieves the effect of zero dust emission through a combination of collection and filtration of grinding and polishing dust, back-blowing and circulating filtration of exhaust gas, and turbulent treatment of grinding wheels. The above structural technical features can be applied to manual grinding and polishing machines, artificial intelligence automatic grinding and polishing machines, and all equipment in various fields that generate dust and need to collect and treat dust. Therefore, all equivalent changes and modifications made to the claims and scope of the present invention should fall within the scope of the claims of the present invention.

Claims

1. A zero-emission environmentally friendly grinding and polishing machine, characterized by: The invention comprises a grinding and polishing chamber (1), a dust collecting device (2), an exhaust fan (3), a circulating filtering system and a blowing device (4), wherein the dust collecting device (2) is connected to the grinding and polishing chamber (1); the exhaust fan (3) is connected to the dust collecting device (2) and the blowing device (4) respectively, so as to draw the exhaust gas filtered by the dust collecting device (2) into the blowing device (4); the blowing device (4) is also connected to the grinding and polishing chamber (1) so as to guide the exhaust gas back into the grinding and polishing chamber (1), and utilize the exhaust gas to filter the exhaust gas. The air blows the dust at the opening of the grinding and polishing chamber (1) into the grinding and polishing chamber (1); a grinding wheel (18) is provided in the grinding and polishing chamber (1); a turbulence disruptor (19) is provided above the grinding wheel (18); the turbulence disruptor (19) comprises a limit frame (20) which cooperates with each other to block turbulence and change the flow direction of turbulence, a plurality of air collecting guide vanes (21) and a mounting frame (23), and an adjusting screw (22) which drives the mounting frame (23) to move up and down; the limit frame (20) is fixed to the grinding and polishing chamber (1 1) on the inner top wall, the mounting frame (23) is movably connected to the inner side of the limit frame (20); the plurality of wind collecting guide vanes (21) are mounted on the mounting frame (23), and the plurality of wind collecting guide vanes (21) are each provided with a groove (24) that is assembled with the outer edge of the grinding wheel (18); one end of the adjusting screw (22) is fixedly connected to the mounting frame (23), and the other end of the adjusting screw (22) passes through the grinding and polishing chamber (1) and is movably connected to the grinding and polishing chamber (1); and also includes a motor (2 9) and a transmission shaft (30), the motor (29) being located outside the grinding and polishing chamber (1) and the circulating filtration system, a bearing seat (31) for mounting the transmission shaft (30) being provided on the outer side of the blowing device (4), one end of the transmission shaft (30) extending into the grinding and polishing chamber (1) to be connected to a grinding wheel (18) in the grinding and polishing chamber (1); a transmission wheel (32) being fixedly provided on the transmission shaft (30), the transmission wheel (32) being connected to the output end of the motor (29) via a belt (33).

2. A zero-emission environmentally friendly grinding and polishing machine according to claim 1, characterized in that: The blowing device (4) comprises a return air main duct (5), an upper return air branch duct (6), a side return air branch duct (7) and a lower return air branch duct (8); the return air main duct (5) is connected to the exhaust fan (3); the upper return air branch duct (6), the side return air branch duct (7) and the lower return air branch duct (8) are all arranged on one side of the return air main duct and are connected to the return air main duct (5); the upper return air branch duct (6), the side return air branch duct (7) and the lower return air branch duct (8) are also located around the opening of the grinding and polishing chamber (1) and are connected to the inside of the grinding and polishing chamber (1).

3. The zero-emission environmentally friendly grinding and polishing machine according to claim 1, characterized in that: The dust suction device (2) comprises an air suction diversion box (25) and a dust collection filter (9); the dust collection filter (9) is respectively connected to the air outlet of the air suction diversion box (25) and the exhaust fan (3); and the air inlet of the air suction diversion box (25) is connected to the grinding and polishing chamber (1).

4. The zero-emission environmentally friendly grinding and polishing machine according to claim 3, characterized in that: The dust collecting filter (9) comprises a buffer settling chamber (11), a washing chamber (12) and a water-gas separation chamber (13) which are connected in sequence; the water-gas separation chamber (13) is connected to the exhaust fan (3); the buffer settling chamber (11) is connected to the air outlet of the air suction diversion box (25); and the water-gas separation chamber (13) is provided with a self-excited vortex filter device (14), a first-stage water baffle (15), a second-stage water baffle (16) and a third-stage water baffle (17) from bottom to top.

5. The zero-emission environmentally friendly grinding and polishing machine according to claim 1, characterized in that: The grinding and polishing chamber (1) is provided with a grinding wheel (18), a rear guide wheel (26) and a lower guide wheel (27); the grinding wheel (18), the rear guide wheel (26) and the lower guide wheel (27) are connected by an abrasive belt (28).

6. The zero-emission environmentally friendly grinding and polishing machine according to claim 1, characterized in that: The inner bottom surface of the grinding and polishing chamber (1) is also provided with a dry collection box (35) for collecting dust.

7. The zero-emission environmentally friendly grinding and polishing machine according to claim 1, characterized in that: It also comprises a machine base (34), on which the grinding and polishing chamber (1), the dust collecting device (2), the exhaust fan (3), the blowing device (4) and the motor (29) are all arranged.

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