Dust collecting device for metal grinding and using method

Abstract

The invention discloses a dust collecting device for metal grinding and a using method. The dust collecting device comprises a grinding machine body, a door plate, a flow guide groove, a water circulation assembly and a controller. A first spraying mechanism is embedded in the surface of the door plate, the first spraying mechanism comprises a fan, and a recycling assembly and a water circulation assembly are arranged in the grinding machine body; the recycling assembly comprises a material frame and a driving mechanism, the material frame comprises a filter membrane and a liquid level sensor, the driving mechanism comprises a servo motor, a lead screw and a position sensor, the lead screw is rotationally meshed with the inner walls of the two ends of the material frame, and the lead screw is meshed with the output end of the servo motor; the water circulation assembly comprises a water collecting tank, a water tank, a conveying pump and a plurality of circulation pipes. Metal dust generated in the polishing process can be fully recycled, harm of the metal dust to the environment and health of workers is reduced, classified collection can be conducted according to the types of the metal powder, and recycling of the metal dust is more convenient.

Description

Technical Field

[0001] The invention relates to the technical field of grinding machinery, and in particular to a dust collection device for metal grinding and a use method thereof. Background Art

[0002] A grinder is a machine tool that uses abrasive tools to grind the surface of a workpiece. Most grinders use high-speed rotating grinding wheels for grinding, and a small number use other grinding tools such as oilstones and abrasive belts and free abrasives for processing. With the development of modern technology, CNC grinders have gradually replaced old-fashioned manual grinders. CNC grinders are the product of combining modern information technology and modern mechanical manufacturing technology, including CNC surface grinders, CNC centerless grinders, CNC internal and external cylindrical grinders, etc.

[0003] When using a CNC grinder to grind the surface of a workpiece, the grinding wheel contacts the surface of the workpiece to grind the surface of the workpiece smoothly, and metal debris is generated at the same time. The higher the grinding precision, the smaller the particle size of the metal powder produced. Dust with a particle size of more than 10 microns is coarse dust, and dust below 10 microns is too fine and is already inhalable. This kind of metal powder is not only difficult to collect, but also can float in the air and can be easily inhaled by workers, causing harm to their health and also causing certain impacts on the environment.

[0004] Although some existing grinding equipment has the function of recycling debris and powder, which can solve the problem of difficulty in metal powder recycling and metal powder floating in the air, it only recycles a certain type of metal powder and lacks the function of classified recycling. Therefore, the existing metal powder collection method is flawed.

[0005] Secondly, the effective recycling of debris and powders generated during the grinding process of precious metals, such as gold powder, silver powder, copper powder, etc., can not only reduce material loss, but also help save manufacturing costs. Therefore, the debris and powders generated by the grinding of precious metals have a high recycling value. If the inside of the grinding equipment is not thoroughly cleaned before grinding workpieces of different materials, the collected metal powder will contain a variety of metal materials, increasing the difficulty of recycling the metal powder. Therefore, the existing grinding equipment is still lacking in the collection of metal powders. Summary of the invention

[0006] The object of the present invention is to provide a dust collection device for metal grinding and a use method thereof, so as to solve the problems raised in the above-mentioned background technology.

[0007] To achieve the above-mentioned object, the present invention provides the following technical solutions: a dust collection device for metal grinding, comprising a grinder body, a door panel, a guide groove, a water circulation component and a controller;

[0008] A first spray mechanism is embedded and installed on the surface of the door panel, and the first spray mechanism includes a fan, and the fan is installed on a side of the first spray mechanism away from the door panel;

[0009] A recovery component and a water circulation component are arranged inside the grinding machine body;

[0010] The recycling assembly includes a plurality of material frames and a plurality of driving mechanisms, each of the material frames includes a filter membrane and a liquid level sensor, each of the driving mechanisms includes a servo motor, a lead screw and a position sensor, each of the position sensors corresponds to the position of each of the material frames, the lead screw is rotatably engaged with the inner walls at both ends of the material frame, and the lead screw is engaged with the output end of the servo motor;

[0011] The water circulation assembly includes a water collection tank, a water tank, a delivery pump and multiple circulation pipes. A solenoid valve is provided at the connection between each circulation pipe and the delivery pump. The circulation pipe is connected to the first spray mechanism, the water collection tank is connected to the water tank, and the delivery pump is connected to the water tank.

[0012] Preferably, the surface of the guide groove is provided with a second spray mechanism and a third spray mechanism;

[0013] The first spray mechanism, the second spray mechanism and the third spray mechanism are all composed of spray pipes.

[0014] Preferably, each circulation pipe is also connected to the second spray mechanism and the third spray mechanism.

[0015] Preferably, a flow guide cover is provided on the surface of the first spray mechanism facing away from the door panel, and the fan is located inside the flow guide cover.

[0016] Preferably, each of the driving mechanisms further comprises a belt and a limiting rod, and the belt is sleeved on the surface of the lead screw;

[0017] A limiting groove is arranged on the surface of each material frame, and the limiting rods are slidably inserted into the limiting groove.

[0018] Preferably, the water collection tank is located between the recovery component and the water tank.

[0019] Preferably, the controller includes a scheduling module, an alarm module, a water circulation control module and a manual control module;

[0020] The scheduling module is connected to the servo motor and the position sensor respectively;

[0021] The alarm module is connected to the liquid level sensor;

[0022] The water circulation control module is connected to the delivery pump and the solenoid valve;

[0023] The manual control module is connected to the scheduling module and the water circulation control module respectively.

[0024] A method for using a dust collection device for metal grinding comprises the following steps:

[0025] S1: Before starting the grinding operation, the position of the recovery component is set according to the composition of the workpiece being ground, and the filter membrane with the mesh number required for filtering the powder is configured according to the grinding fineness. The position of the material frame in the recovery component is monitored by the position sensor, and the material frame is driven to move by the driving mechanism;

[0026] S2: When the grinding operation starts, the first spray mechanism, the second spray mechanism and the third spray mechanism spray water mist respectively, and the fan rotates to generate airflow to blow the water mist sprayed by the first spray mechanism toward the grinding area;

[0027] The water flows sprayed by the second spray mechanism and the third spray mechanism act on the surface of the guide groove, and the guide groove collects the water flows carrying metal powder and guides them to the recovery component;

[0028] S3: The filter membrane in the material frame separates water from metal powder, and the liquid level sensor monitors the liquid level in the material frame. The driving mechanism can flexibly drive the material frame to move, and different metal powder collection effects can be achieved through different material frame position relationships;

[0029] S4: The water collection tank returns the separated water to the water tank, and the delivery pump circulates the recovered water to the first spray mechanism, the second spray mechanism and the third spray mechanism again;

[0030] S5: After grinding is completed or the grinder body has been used for a period of time, the drive mechanism pushes the material frame out of the grinder body in turn, and the staff replaces the filter membrane and collects the metal powder separated by the filter membrane.

[0031] Preferably, in step S1:

[0032] Methods for setting the recycling component position include:

[0033] SS1: Multiple material frames correspond to multiple commonly used metals, and the material frames are numbered, and each material frame is fixed for collecting a certain type of metal powder;

[0034] SS2: When multiple material frames are used to collect the same metal powder, the powder is collected from top to bottom in sequence according to the material frame, and the pore size of the filter membrane in the material frame decreases from top to bottom.

[0035] Compared with the prior art, the present invention has the following beneficial effects:

[0036] 1. The present invention achieves the effect of classifying and collecting different types of metal powders by setting a recovery component. Different types of metal powders are filtered and recovered by an independent material frame in the recovery component, which not only improves the comprehensiveness of metal powder collection, but also increases the application scope of the grinder body, so that the grinder body can be continuously applied to the surface grinding operations of various metal workpieces, and the collected metal powders will not be mixed, which is more conducive to the recycling and reuse of metal powders. In addition, the pore size of the filter membrane can be flexibly adjusted according to actual applications, which can not only perform comprehensive filtering and collection, but also perform layered collection, and is applied to the collection of precious metal powders, with better actual application effects;

[0037] 2. The present invention achieves the effect that the direction of water mist spraying is the same as the direction of metal powder generated by grinding by setting the first spray mechanism. The first spray mechanism generates airflow through a fan to blow the water mist sprayed by the first spray mechanism to the grinding position, so that the metal powder generated by grinding is completely mixed with the spray, effectively reducing the problem of metal powder escaping, thereby improving the comprehensive effect of metal powder collection;

[0038] 3. The present invention achieves the effect of flexibly driving multiple material frames by setting a driving mechanism. The position of the material frame can be independently controlled by the driving mechanism, and can be flexibly adjusted according to actual application conditions, thereby increasing the practical application flexibility of the recycling component;

[0039] 4. The present invention achieves the effect of saving water resources by setting up a water circulation component. By filtering and circulating the spray water, it not only ensures the effect of powder collection, but also can recycle the spray water, reduce the amount of water resources, and is more environmentally friendly. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 Schematic diagram of the internal structure of the grinding machine body in the first embodiment of the present invention;

[0041] Figure 2 This is a schematic diagram of the appearance structure of the grinding machine body in the first embodiment of the present invention;

[0042] Figure 3 It is a schematic diagram of the side cross-sectional structure of the grinding machine body in the first embodiment of the present invention;

[0043] Figure 4 This is a schematic diagram of the explosion structure of the first spray mechanism in Embodiment 1 of the present invention;

[0044] Figure 5 This is a schematic diagram of the appearance structure of the spray pipe in the first embodiment of the present invention;

[0045] Figure 6 This is a schematic diagram of the appearance structure of the recycling component in the first embodiment of the present invention;

[0046] Figure 7 This is a schematic diagram of the rear view structure of the recycling component in the first embodiment of the present invention;

[0047] Figure 8 This is a schematic diagram of the appearance structure of the water circulation component in the first embodiment of the present invention.

[0048] In the figure:

[0049] 100, grinding machine body; 110, door panel; 120, first spray mechanism; 121, fan; 122, air guide cover; 130, second spray mechanism; 140, third spray mechanism; 150, air guide groove; 160, spray pipe;

[0050] 200, recovery component; 210, material frame; 211, filter membrane; 212, limit groove; 213, liquid level sensor; 220, drive mechanism; 221, servo motor; 222, lead screw; 223, limit rod; 224, belt; 225, position sensor;

[0051] 300, water circulation assembly; 310, water collecting tank; 320, water tank; 330, delivery pump; 331, solenoid valve; 332, circulation pipe;

[0052] 400. Controller. DETAILED DESCRIPTION

[0053] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0054] See also Figures 1 to 8 The present invention provides the following three embodiments:

[0055] Embodiment 1:

[0056] See also Figures 1 to 3 , a dust collection device for metal grinding, including a grinder body 100, a door panel 110, a guide groove 150, a water circulation component 300 and a controller 400.

[0057] See also Figure 4A first spray mechanism 120 is embedded in the surface of the door panel 110. The first spray mechanism 120 includes a fan 121. The fan 121 is installed on the side of the first spray mechanism 120 away from the door panel 110. The fan 121 rotates to generate airflow, driving the water mist sprayed by the first spray mechanism 120 to flow toward the grinding position. The water mist sprayed by the first spray mechanism 120 fully contacts the powder generated at the grinding position, so that the powder particles are fused in the water droplets, thereby reducing the dispersion of metal powder and improving the recovery efficiency of the metal powder.

[0058] A shroud 122 is disposed on the surface of the first spray mechanism 120 facing away from the door panel 110 , and a fan 121 is located inside the shroud 122 . An air inlet of the shroud 122 is located at the bottom for changing the airflow direction and providing air supply for the fan 121 .

[0059] A second spray mechanism 130 and a third spray mechanism 140 are arranged on the surface of the guide groove 150. The first spray mechanism 120, the second spray mechanism 130 and the third spray mechanism 140 are all composed of a spray pipe 160. The water mist spraying directions of the second spray mechanism 130 and the third spray mechanism 140 are both in contact with the inner wall of the guide groove 150. The sprayed water mist forms a water curtain on the surface of the guide groove 150, driving the metal powder to flow into the recovery component 200, thereby reducing the problem of metal powder adhering to the inner wall of the guide groove 150.

[0060] See also Figure 1 and Figure 3 A recovery component 200 and a water circulation component 300 are disposed inside the grinding machine body 100 .

[0061] See also Figure 6 and Figure 7 The recovery component 200 includes a plurality of material frames 210 and a plurality of driving mechanisms 220. Each material frame 210 includes a filter membrane 211 and a liquid level sensor 213. The pore size of the filter membrane 211 is selected to be 0.1-10 microns. The appropriate specification of the filter membrane 211 is selected according to the actual application.

[0062] The liquid level sensor 213 is used to detect the liquid level in the material frame 210. If the filter membrane 211 is completely blocked, the spray water cannot flow to the next layer or enter the sump 310, which will cause the water level in the material frame 210 to rise. It is determined that the filter membrane 211 is blocked, and the driving mechanism 220 retracts the current material frame 210, moves the blocked material frame 210 to the idle position, and pushes the other material frames 210 in the idle position to the bottom of the guide groove 150 to ensure normal recycling operations.

[0063] Each driving mechanism 220 includes a servo motor 221, a lead screw 222 and a position sensor 225. Each position sensor 225 corresponds to the position of each material frame 210. Each driving mechanism 220 also includes a belt 224 and a limit rod 223. The belt 224 is sleeved on the surface of the lead screw 222. The belt 224 is used to synchronously drive the lead screws 222 on both sides of the material frame 210 to move synchronously to maintain the smooth movement of the material frame 210.

[0064] A limiting groove 212 is provided on the surface of each material frame 210, and the limiting rods 223 are slidably inserted into the limiting groove 212. The limiting groove 212 and the limiting rod 223 are used together to further maintain the stability of the material frame 210, and enable the material frame 210 to remain in a horizontal state after being pushed out of the surface of the grinder body 100.

[0065] The lead screw 222 is rotatably engaged with the inner walls at both ends of the material frame 210, and the lead screw 222 is engaged with the output end of the servo motor 221. The servo motor 221 transmits the driving force to the lead screw 222 through the meshing gears, thereby driving the lead screw 222 to rotate, and the material frame 210 is driven to move through the rotation of the lead screw 222.

[0066] See also Figure 8 The water circulation component 300 includes a water collection tank 310, a water tank 320, a delivery pump 330 and a plurality of circulation pipes 332. The water collection tank 310 is connected to the water tank 320, and the delivery pump 330 is connected to the water tank 320. The water collection tank 310 is located between the recovery component 200 and the water tank 320.

[0067] Each circulation pipe 332 is connected to the first spray mechanism 120, the second spray mechanism 130 and the third spray mechanism 140 respectively. By filtering and circulating the spray water, not only the effect of powder collection is guaranteed, but also the spray water can be recycled, reducing the amount of water source and being more environmentally friendly. A solenoid valve 331 is provided at the connection between each circulation pipe 332 and the delivery pump 330, and the opening, closing and water spraying amount of the first spray mechanism 120, the second spray mechanism 130 and the third spray mechanism 140 can be flexibly controlled by the solenoid valve 331.

[0068] The controller 400 includes a scheduling module, an alarm module, a water circulation control module and a manual control module;

[0069] The scheduling module is connected to the servo motor 221 and the position sensor 225 respectively. The scheduling module is used to control the position of each material frame 210, including the collection state, that is, the material frame 210 is located below the discharge port of the guide groove 150; the idle state, that is, the material frame 210 is located near the servo motor 221; the cleaning state, that is, the material frame 210 is located outside the grinder body 100.

[0070] The alarm module is connected to the liquid level sensor 213, which also includes a buzzer alarm. When the filter membrane 211 in the material frame 210 is blocked, the liquid level sensor 213 detects that the liquid level has risen, and the liquid level sensor 213 sends a signal to the alarm module to generate an alarm prompt.

[0071] The water circulation control module is connected to the delivery pump 330 and the solenoid valve 331, and is used to control the water delivery flow of the delivery pump 330 and control the switch of the solenoid valve 331;

[0072] The manual control module is connected to the scheduling module and the water circulation control module respectively, and the manual control module is used to adjust and control the scheduling module and the water circulation control module.

[0073] Embodiment 2:

[0074] When applied to the collection of the same metal powder, the collection steps are as follows:

[0075] S1: Before starting the grinding operation, according to the fineness of the workpiece to be ground, the aperture of the filter membrane 211 in the multiple material frames 210 is adjusted, and the aperture of the filter membrane 211 is reduced from top to bottom. The aperture of the filter membrane 211 is selected to be 0.1-10 microns, and the aperture of the filter membrane 211 in the material frame 210 closest to the water collection tank 310 is 0.2 microns. The position of the material frame 210 in the recovery component 200 is monitored by the position sensor 225, and the material frame 210 is driven to move by the driving mechanism 220.

[0076] S2: When the grinding operation starts, the first spray mechanism 120, the second spray mechanism 130 and the third spray mechanism 140 spray water mist respectively. The water mist sprayed by the first spray mechanism 120 is affected by the airflow generated by the fan 121, and the water mist flows toward the guide groove 150. The water mist carries metal debris and flows toward the guide groove 150.

[0077] S3: The water flow sprayed by the second spray mechanism 130 and the third spray mechanism 140 acts on the surface of the guide groove 150 to wash the metal powder on the surface of the guide groove 150, and the metal powder flows to the recovery component 200 along with the water flow.

[0078] S4: The water flow carries the metal powder to the recovery component 200, the filter membrane 211 in the material frame 210 separates the water from the metal powder, the filtered water flows back to the water tank 320 through the water collection tank 310, and the delivery pump 330 circulates the recovered water to the first spray mechanism 120, the second spray mechanism 130 and the third spray mechanism 140 again.

[0079] S5: The liquid level sensor 213 detects the liquid level in the material frame 210. When the liquid level stays at the warning position for a long time, it is determined that the filter membrane 211 is blocked. The driving mechanism 220 retracts the current material frame 210, moves the blocked material frame 210 to the idle position, and pushes the other material frames 210 at the idle position below the blocked material frame 210 to the bottom of the guide groove 150 for subsequent collection operations.

[0080] S6: After grinding is completed or the grinder body 100 has been used for a period of time, the drive mechanism 220 pushes the material frame 210 out of the grinder body 100 in sequence, and the staff replaces the filter membrane 211 and collects the metal powder separated by the filter membrane 211.

[0081] Embodiment three:

[0082] When applied to the collection of various metal powders, the collection steps are as follows:

[0083] S1: Before starting the grinding operation, multiple material frames 210 are numbered according to the composition of the workpiece being ground and the fineness of the grinding, and the set metal types of the material frames 210 are stored. Before grinding the workpiece, the composition of the current workpiece being ground corresponds to the classified material frames 210, and the filter membrane 211 of the corresponding mesh number is set in the material frame 210 according to the fineness of the grinding. The position of the material frame 210 in the recovery component 200 is monitored by the position sensor 225, and the material frame 210 is driven by the driving mechanism 220 to move the position.

[0084] Before subsequent use, the type of metal of the workpiece to be polished is input through the controller 400, and the controller 400 automatically adapts the corresponding material frame 210 to collect powder.

[0085] S2: When the grinding operation starts, the first spray mechanism 120, the second spray mechanism 130 and the third spray mechanism 140 spray water mist respectively. The water mist sprayed by the first spray mechanism 120 is affected by the airflow generated by the fan 121, and the water mist flows toward the guide groove 150. The water mist carries metal debris and flows toward the guide groove 150.

[0086] S3: The water flow sprayed by the second spray mechanism 130 and the third spray mechanism 140 acts on the surface of the guide groove 150 to wash the metal powder on the surface of the guide groove 150, and the metal powder flows to the recovery component 200 along with the water flow.

[0087] S4: The water flow carries the metal powder to the recovery component 200, the filter membrane 211 in the material frame 210 separates the water from the metal powder, the filtered water flows back to the water tank 320 through the water collection tank 310, and the delivery pump 330 circulates the recovered water to the first spray mechanism 120, the second spray mechanism 130 and the third spray mechanism 140 again.

[0088] S5: The liquid level sensor 213 detects the liquid level in the material frame 210. When the liquid level stays at the warning position for a long time, it is determined that the filter membrane 211 is blocked. The driving mechanism 220 retracts the current material frame 210, moves the blocked material frame 210 to the idle position, and pushes other material frames 210 at the idle position and without numbers to the bottom of the guide groove 150.

[0089] S6: After grinding is completed or the grinder body 100 has been used for a period of time, the drive mechanism 220 pushes the material frame 210 out of the grinder body 100 in sequence, and the staff replaces the filter membrane 211 and collects the metal powder separated by the filter membrane 211.

[0090] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A dust collection device for metal grinding, characterized in that: It comprises a grinding machine body (100), a door panel (110), a guide groove (150), a water circulation component (300) and a controller (400); A first spray mechanism (120) is embedded and installed on the surface of the door panel (110), the first spray mechanism (120) comprising a fan (121), and the fan (121) is installed on a side of the first spray mechanism (120) facing away from the door panel (110); A recovery component (200) and a water circulation component (300) are arranged inside the grinding machine body (100); The recovery component (200) comprises a plurality of material frames (210) and a plurality of drive mechanisms (220), each of the material frames (210) comprising a filter membrane (211) and a liquid level sensor (213), each of the drive mechanisms (220) comprising a servo motor (221), a lead screw (222) and a position sensor (225), each of the position sensors (225) corresponding to the position of each of the material frames (210), the lead screw (222) rotatably meshing with the inner walls at both ends of the material frame (210), and the lead screw (222) meshing with the output end of the servo motor (221); The water circulation component (300) comprises a water collection tank (310), a water tank (320), a delivery pump (330) and a plurality of circulation pipes (332), wherein a solenoid valve (331) is provided at the connection between each circulation pipe (332) and the delivery pump (330), the circulation pipe (332) is connected to the first spray mechanism (120), the water collection tank (310) is communicated with the water tank (320), and the delivery pump (330) is connected to the water tank (320).

2. A dust collection device for metal grinding according to claim 1, characterized in that: The surface of the guide groove (150) is provided with a second spray mechanism (130) and a third spray mechanism (140); The first spray mechanism (120), the second spray mechanism (130) and the third spray mechanism (140) are all composed of a spray pipe (160).

3. A dust collection device for metal grinding according to claim 2, characterized in that: Each circulation pipe (332) is also connected to the second spray mechanism (130) and the third spray mechanism (140).

4. A dust collection device for metal grinding according to claim 1, characterized in that: A flow guide cover (122) is provided on the surface of the first spray mechanism (120) on the side facing away from the door panel (110), and the fan (121) is located inside the flow guide cover (122).

5. The dust collection device for metal grinding according to claim 1, characterized in that: Each of the driving mechanisms (220) further comprises a belt (224) and a limiting rod (223), wherein the belt (224) is sleeved on the surface of the lead screw (222); A limiting groove (212) is provided on the surface of each material frame (210), and the limiting rods (223) are slidably inserted into the limiting groove (212).

6. A dust collection device for metal grinding according to claim 1, characterized in that: The water collection tank (310) is located between the recovery assembly (200) and the water tank (320).

7. A dust collection device for metal grinding according to any one of claims 1 to 6, characterized in that: The controller (400) comprises a scheduling module, an alarm module, a water circulation control module and a manual control module; The scheduling module is connected to the servo motor (221) and the position sensor (225) respectively; The alarm module is connected to the liquid level sensor (213); The water circulation control module is connected to the delivery pump (330) and the solenoid valve (331); The manual control module is connected to the scheduling module and the water circulation control module respectively.

8. The dust collection device for metal polishing according to claims 1 to 7, further comprising a method for using the dust collection device for metal polishing, characterized in that: The steps include: S1: before starting the grinding operation, the position of the recovery component (200) is set according to the composition of the workpiece to be ground, and the filter membrane (211) with the mesh number required for filtering the powder is configured according to the grinding fineness. The position of the material frame (210) in the recovery component (200) is monitored by a position sensor (225), and the material frame (210) is driven by a driving mechanism (220) to move the position; S2: When the grinding operation starts, the first spray mechanism (120), the second spray mechanism (130) and the third spray mechanism (140) spray water mist respectively, and the fan (121) rotates to generate airflow to blow the water mist sprayed by the first spray mechanism (120) toward the grinding area; The water flows sprayed by the second spray mechanism (130) and the third spray mechanism (140) act on the surface of the guide groove (150), and the guide groove (150) collects the water flows carrying the metal powder and guides them to the recovery component (200); S3: The filter membrane (211) in the material frame (210) separates water from the metal powder, and the liquid level sensor (213) monitors the liquid level in the material frame (210). The driving mechanism (220) can flexibly drive the material frame (210) to move, and different metal powder collection effects can be achieved through different positions of the material frame (210); S4: the water collecting tank (310) returns the separated water to the water tank (320), and the delivery pump (330) circulates the recovered water to the first spray mechanism (120), the second spray mechanism (130) and the third spray mechanism (140); S5: After grinding is completed or the grinding machine body (100) has been used for a period of time, the driving mechanism (220) pushes the material frame (210) out of the grinding machine body (100) in sequence, and the staff replaces the filter membrane (211) and collects the metal powder separated by the filter membrane (211).

9. The method for using the dust collection device for metal grinding according to claim 8, characterized in that: in, In step S1: The method for setting the position of the recovery component (200) includes the following: SS1: multiple material frames (210) are matched to multiple commonly used metals, and the material frames (210) are numbered, and each material frame (210) is fixedly used for collecting a certain type of metal powder; SS2: When multiple material frames (210) are used to collect the same metal powder, the metal powder is collected sequentially from top to bottom according to the material frames (210), and the pore size of the filter membrane (211) in the material frame (210) decreases sequentially from top to bottom.

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