Mechanical workpiece polishing smoke dust capturing and recycling device

Abstract

The application discloses a mechanical workpiece polishing smoke dust capturing and recovering device and relates to the dust removing equipment field.The mechanical workpiece polishing smoke dust capturing and recovering device utilizes the gradually increasing characteristics of the spiral shape of the slag guide plate and the inner diameter of the slag collecting cylinder from top to bottom, so that the air flows from top to bottom in the inner guide cylinder, the spiral shape of the slag guide plate is utilized to make the air flow spirally, the metal particles in the air are driven in the spiral flow process, the metal particles generate centrifugal force to adhere to the inner wall of the inner guide cylinder and flow downward, and the metal particles are thrown outward at the moment of being guided out and enter the inside of the slag collecting cylinder, the conical shape of the inner wall of the slag collecting cylinder is utilized to collect and store the metal particles in the slag collecting cylinder, metal recovery is facilitated, the metal particles and dust particles are separated and removed, and damage of the filter bag caused by the metal particles when the dust and the metal particles are filtered through the filter bag is avoided.

Description

Technical Field

[0001] This invention specifically relates to a dust collection and recovery device for grinding mechanical workpieces, and pertains to the field of dust removal equipment. Background Technology

[0002] The dust collection and recovery device for grinding mechanical workpieces is an integrated industrial environmental protection equipment specifically designed for the source collection, filtration and purification, and dust recovery of metal or non-metal dust and fumes generated during machining processes such as grinding, polishing, and sanding. Its core function is to efficiently collect and treat dust before it spreads, while simultaneously achieving dust material recovery or safe disposal, thus preventing dust from being directly emitted into the atmosphere and causing dust pollution to the atmosphere. A flue gas treatment device, disclosed in CN110523188B, includes a housing. The inner side of the housing is divided by a horizontally arranged partition to form a filter chamber and a buffer chamber with an inlet pipe. A purification box is installed at the upper end of the housing, and the purification box is connected to at least one control valve assembly. The control valve assembly includes a three-way housing; the lower port of the three-way housing is connected to the filter chamber; the inner side of the three-way housing is provided with a first conductive component and a second conductive component installed at the other two ports, and the opening force of the second conductive component is greater than that of the first conductive component. The port of the three-way housing with the first conductive component is connected to a return component located in the filter chamber via a conduit; the port of the three-way housing with the second conductive component is connected to the purification box. This invention has a novel design, increasing the flow time of the flue gas through the control valve assembly, thus ensuring good filtration effect. In existing equipment, dust and metal particles in flue gas are filtered simultaneously through filter bags, which causes damage to the filter bags due to the metal particles. It also makes it inconvenient to recover the metal particles separately and causes blockages during the filtration and dust removal process. Summary of the Invention

[0003] To address the aforementioned problems, a technical solution is proposed: a dust collection and recovery device for grinding mechanical workpieces, comprising: The frame has a guide pipe fixedly installed on its top, a suction head mechanism fixedly installed at the end of the guide pipe away from the frame, a collection mechanism fixedly installed inside the frame, and the collection mechanisms are symmetrically installed along the center of the frame's axis. The top of the collection mechanism is connected to the bottom of the guide pipe. A dust removal mechanism is installed between the collection mechanisms and is connected to the collection mechanism. A fan is fixedly installed at the bottom of the outer side of the frame, and the air inlet of the fan is connected to the dust removal mechanism through a pipe. The collection mechanism includes a fixed cylinder, the top of which is connected to the bottom of a guide pipe, and the bottom of the fixed cylinder extends through the frame to its bottom. A connecting cylinder is fixedly installed at the bottom of the fixed cylinder, and an inner guide cylinder is fixedly installed on the inner wall of the connecting cylinder. The upper section of the inner guide cylinder is a conical cylinder with an inner diameter that gradually decreases from top to bottom, and the lower section of the inner guide cylinder is a cylindrical cylinder. A slag guide plate is fixedly installed on the cylindrical section of the inner wall of the inner guide cylinder. The slag guide plates are evenly installed along the center position of the inner guide cylinder. The slag guide plates are spiral plates. Utilizing the spiral shape of the slag guide plates and the characteristic that the inner diameter of the slag collection cylinder gradually increases from top to bottom, air flows from top to bottom within the inner guide cylinder. The spiral shape of the guide plate creates a spiral flow of air, which carries metal particles in the air. This centrifugal force causes the metal particles to flow downwards along the inner wall of the inner guide cylinder. At the moment of discharge, the metal particles are thrown outwards and enter the interior of the collection cylinder. The conical shape of the inner wall of the collection cylinder allows the metal particles to be collected and stored, facilitating metal recovery. At the same time, it separates metal particles from dust particles, preventing damage to the filter bag caused by the metal particles when filtering dust and metal particles. The collection cylinder is fixedly installed at the bottom of the connecting cylinder. The inner diameter of the collection cylinder gradually increases from top to bottom, and the collection cylinder is located directly below the inner guide cylinder.

[0004] Preferably, a magnetic cylinder is fixedly installed on the inner wall of the connecting cylinder. The inner diameter of the magnetic cylinder gradually increases from top to bottom. By cooperating with the inner guide cylinder, the gap between the inner guide cylinder and the magnetic cylinder gradually increases from top to bottom, while the gap gradually decreases as the air flows from bottom to top. Combined with the magnetic force of the magnetic cylinder itself, it adsorbs the fine metal particles remaining in the air, preventing some metal particles from entering the dust removal mechanism and causing scratches or damage to the dust bag. The magnetic cylinder is located outside the inner guide cylinder. The outer side of the connecting cylinder has uniformly opened through grooves, and the through grooves are located above the magnetic cylinder. An outer cover cylinder is fixedly installed on the outer side of the connecting cylinder. A connecting pipe is fixedly installed on the outer side of the outer cover cylinder at the through groove of the connecting cylinder. The end of the connecting pipe away from the outer cover cylinder is connected to the dust removal mechanism.

[0005] Preferably, the suction head mechanism includes a connecting pipe, one end of which is connected to the outer flange of the guide pipe, and the other end of which is fixedly mounted with a suction head cover. An inclined guide plate is fixedly mounted on the inner wall of the suction head cover, and the inclined guide plate is installed at an angle inside the suction head cover. A flow guide cover is fixedly mounted on the end of the suction head cover away from the connecting pipe. Both the upper and lower ends of the outer side of the flow guide cover are provided with downwardly curved extension plates. A louvered plate is fixedly mounted on the inner wall of the flow guide cover, and the louvered plate is inclined downwards from the inside to the outside. The louvered plate is evenly installed from top to bottom inside the flow guide cover. A spiral plate is fixedly mounted on the inner wall of the connecting pipe. The spiral plate, in conjunction with the connecting pipe, allows air to flow spirally after entering the connecting pipe. The spiral shape between the spiral plates blocks and restricts large foreign objects, preventing them from entering the collection mechanism and dust removal mechanism and causing internal blockage. The spiral plates are evenly installed along the center position of the connecting pipe, and a fixing column is fixedly mounted between the spiral plates.

[0006] Preferably, the dust removal mechanism includes a top cylinder, with fixed pipes fixedly installed on both sides of the top cylinder. The end of the fixed pipe away from the top cylinder is fixedly connected to one end of a connecting pipe. A dust removal cylinder is fixedly installed at the bottom of the top cylinder, and an air guide pipe is fixedly installed at the bottom of the dust removal cylinder. The end of the air guide pipe away from the dust removal cylinder is connected to the air inlet of a fan. A fixed cover is fixedly installed on the top of the inner wall of the dust removal cylinder, and a dust removal bag is fixedly installed on the inner wall of the fixed cover.

[0007] Preferably, an outer baffle is fixedly installed on the outer side of the fixing cover. The outer baffle is evenly installed on the outer side of the fixing cover, and the side of the outer baffle near the dust bag is a convex arc surface. The outer baffle cooperates with the dust bag, and the arc surface of the outer baffle near the dust bag supports the dust bag as it filters air, contacting the arc surface of the outer baffle. Simultaneously, the outer baffle restricts the dust bag, preventing it from shifting. A top sliding cylinder is fixedly installed at the top of the inner wall of the top cylinder, and a connecting rod is slidably installed on the inner wall of the top sliding cylinder. A pressure head is fixedly installed at the bottom end of the connecting rod, and the bottom of the pressure head contacts the bottom of the inner wall of the dust bag. An inner pad column is fixedly installed at the top of the rod. The top of the inner pad column is fixedly connected to the inner wall of the top cylinder. Utilizing the elastic material properties of the inner pad column, the connecting rod is compressed, causing the connecting rod to drive the pressure head to compress the dust bag inside the dust collector bag. During the process of the dust collector bag being supported, the pressure head is driven upward, causing the connecting rod to compress the inner pad column upward. Utilizing the elasticity of the inner pad column, after the dust collector bag is supported, the connecting rod slides back and forth within a small range on the inner wall of the top cylinder. The pressure head drives the dust collector bag to vibrate, causing the dust to leave the gaps in the dust collector bag under vibration and be collected at the bottom of the dust collector bag, avoiding blockage. The inner pad column is made of elastic material.

[0008] This invention provides a dust collection and recovery device for grinding mechanical workpieces, which has the following beneficial effects: (i) Utilizing the spiral shape of the guide plate and the gradually increasing inner diameter of the slag collection cylinder from top to bottom, the air flows from top to bottom within the inner guide cylinder. The spiral shape of the guide plate causes the air to flow in a spiral motion, carrying metal particles in the air. This causes the metal particles to generate centrifugal force and flow downwards along the inner wall of the inner guide cylinder. At the moment of discharge, the metal particles are thrown outwards and enter the interior of the slag collection cylinder. The conical shape of the inner wall of the slag collection cylinder allows the metal particles to be collected and stored, facilitating metal recovery. At the same time, it separates and removes metal particles from dust particles, preventing damage to the filter bags caused by metal particles when filtering dust and metal particles through the filter bags.

[0009] (ii) By cooperating with the magnetic cylinder and the inner guide cylinder, the inner diameter of the magnetic cylinder gradually increases from top to bottom. This, combined with the inner guide cylinder, makes the gap between the inner guide cylinder and the magnetic cylinder gradually increase from top to bottom. At the same time, as the air flows from bottom to top, the gap gradually decreases. Combined with the magnetic force of the magnetic cylinder itself, it adsorbs the fine metal particles remaining in the air, preventing some metal particles from entering the dust removal mechanism and causing scratches or damage to the dust collection bag.

[0010] (iii) By using the spiral plates and connecting pipes, the air flows spirally after entering the connecting pipes. The spiral shape between the spiral plates blocks and restricts large foreign objects, preventing them from entering the collection and dust removal mechanisms and causing internal blockages.

[0011] (iv) By cooperating with the dust collector bag through the outer baffle, the arc surface of the outer baffle near the dust collector bag is used to support the dust collector bag when it is filtering air, and the outer baffle restricts the dust collector bag to prevent it from shifting.

[0012] (v) By utilizing the elastic material characteristics of the inner pad column, the connecting rod is compressed, causing the connecting rod to drive the pressure head to compress the dust bag inside the dust bag. During the process of the dust bag being supported, the pressure head is driven upward, causing the connecting rod to compress the inner pad column upward. Utilizing the elasticity of the inner pad column, after the dust bag is supported, the connecting rod slides back and forth in a small range on the inner wall of the top sliding cylinder, and the pressure head drives the dust bag to vibrate, causing the dust to leave the gaps in the dust bag under vibration and be collected at the bottom of the dust bag, thus avoiding blockage. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a cross-sectional view of the overall structure of the present invention; Figure 3 This is a schematic diagram of the suction head mechanism of the present invention; Figure 4 This is a sectional view of the suction head mechanism of the present invention; Figure 5 This is a schematic diagram showing the position and structure of the collecting mechanism and the dust removal mechanism of the present invention; Figure 6 This is a schematic diagram of the collection mechanism of the present invention; Figure 7 This is a cross-sectional view of the collecting mechanism of the present invention; Figure 8 This is a schematic diagram of the dust removal mechanism of the present invention; Figure 9 This is a partial sectional view of the dust removal mechanism of the present invention.

[0014] In the diagram: 1. Frame; 2. Suction head mechanism; 3. Collection mechanism; 4. Dust removal mechanism; 5. Guide pipe; 6. Fan; 21. Connecting pipe; 22. Suction head cover; 23. Guide hood; 24. Louvered plate; 25. Inclined guide plate; 26. Fixed column; 27. Spiral plate; 31. Fixed cylinder; 32. Outer cover cylinder; 33. Connecting cylinder; 34. Slag collection cylinder; 35. Inner guide cylinder; 36. Connecting pipe; 37. Magnetic cylinder; 38. Slag guide plate; 401. Top cylinder; 402. Fixed pipe; 403. Dust removal cylinder; 404. Air guide pipe; 405. Fixed cover; 406. Connecting rod; 407. Dust removal bag; 408. Pressure head; 409. Outer baffle; 410. Top sliding cylinder; 411. Inner pad column. Detailed Implementation

[0015] Example 1, Reference Figures 1 to 2 and Figures 5 to 7 The present invention provides the following technical solution: A dust collection and recovery device for grinding mechanical workpieces includes: The frame 1 has a guide pipe 5 fixedly installed on its top. A suction head mechanism 2 is fixedly installed at the end of the guide pipe 5 away from the frame 1. A collection mechanism 3 is fixedly installed inside the frame 1 and is symmetrically installed along the center of the axis of the frame 1. The top of the collection mechanism 3 is connected to the bottom of the guide pipe 5. A dust removal mechanism 4 is installed between the collection mechanisms 3 and is connected to the collection mechanism 3. A fan 6 is fixedly installed at the bottom of the outer side of the frame 1 and the air inlet of the fan 6 is connected to the dust removal mechanism 4 through a pipe. The collecting mechanism 3 includes a fixed cylinder 31, the top of which is connected to the bottom of the guide pipe 5. The bottom of the fixed cylinder 31 penetrates the frame 1 and extends to its bottom. A connecting cylinder 33 is fixedly installed at the bottom of the fixed cylinder 31. An inner guide cylinder 35 is fixedly installed on the inner wall of the connecting cylinder 33. The upper section of the inner guide cylinder 35 is a tapered cylinder with an inner diameter that gradually decreases from top to bottom. Through the connection between the fixed cylinder 31 and the guide pipe 5, the flue gas enters the interior of the connecting cylinder 33 through the fixed cylinder 31. At the same time, as the flue gas flows downward, it first enters the interior of the inner guide cylinder 35 and flows from top to bottom. During the flow, the guide plate 38 inside the inner guide cylinder 35 is used to... The spiral shape of the guide plate 38 causes the air to flow downwards in a spiral motion, generating centrifugal force on the metal particles in the flue gas. After exiting the inner guide cylinder 35, the centrifugal force causes the metal particles to be thrown outwards and enter the slag collection cylinder 34 for collection. The lower section of the inner guide cylinder 35 is a cylindrical cylinder, and the guide plate 38 is fixedly installed on the cylindrical section of the inner wall of the inner guide cylinder 35. The guide plate 38 is evenly installed along the center position of the inner guide cylinder 35 and is a spiral plate. The bottom end of the connecting cylinder 33 is fixedly installed with the slag collection cylinder 34. The inner diameter of the slag collection cylinder 34 gradually increases from top to bottom, and the slag collection cylinder 34 is located directly below the inner guide cylinder 35.

[0016] A magnetic cylinder 37 is fixedly installed on the inner wall of the connecting cylinder 33. The inner diameter of the magnetic cylinder 37 gradually increases from top to bottom, and the magnetic cylinder 37 is located outside the inner guide cylinder 35. The outer side of the connecting cylinder 33 is evenly provided with through grooves, and the through grooves are located above the magnetic cylinder 37. An outer cover cylinder 32 is fixedly installed on the outer side of the connecting cylinder 33. The outer cover cylinder 32 is connected to the through groove of the connecting cylinder 33. Subsequently, dust particles flow upward with the air through the gap between the magnetic cylinder 37 and the inner guide cylinder 35. The magnetic force of the magnetic cylinder 37 adsorbs the residual metal particles in the air. Then, the dust particles pass through the through groove of the connecting cylinder 33 with the air and enter the outer cover cylinder 32. They are then introduced into the dust removal mechanism 4 through the connecting pipe 36. The outer side of the outer cover cylinder 32 is fixedly installed with the connecting pipe 36. The end of the connecting pipe 36 away from the outer cover cylinder 32 is connected to the dust removal mechanism 4.

[0017] Example 2, based on Example 1, with reference to Figures 3 to 4The suction head mechanism 2 includes a connecting pipe 21. One end of the connecting pipe 21 is connected to the outer flange of the guide pipe 5, and the other end of the connecting pipe 21 is fixedly installed with a suction head cover 22. An inclined guide plate 25 is fixedly installed on the inner wall of the suction head cover 22, and the inclined guide plate 25 is installed at an angle inside the suction head cover 22. Through the connection between the connecting pipe 21 and the guide pipe 5, when the flue gas is drawn, the guide hood 23 is aligned with the grinding position, so that the dust generated by grinding enters the interior of the guide hood 23 under the drive of the drawn air. At the same time, after the dusty air enters the interior of the guide hood 23, large foreign objects in the drawn air are blocked by the louvers 24 installed inside the guide hood 23. The guide hood 23 is fixedly installed at the end of the suction head cover 22 away from the connecting pipe 21. Both the upper and lower ends of the outer side of the guide hood 23 are provided with The guide hood 23 has a downwardly curved extension plate and a louvered plate 24 fixedly installed on its inner wall. The louvered plate 24 is inclined downward from the inside to the outside and is evenly installed from top to bottom inside the guide hood 23. A spiral plate 27 is fixedly installed on the inner wall of the connecting pipe 21. After the smoke and dust are sucked into the inside of the suction head hood 22, the inclined guide plate 25 inside the suction head hood 22 guides the sucked smoke and dust to flow into the inside of the connecting pipe 21. After the smoke and dust enter the inside of the connecting pipe 21, it cooperates with the spiral plate 27 through the fixed column 26. The spiral plate 27 guides the passing smoke and dust and dust, making it spiral flow through the connecting pipe 21. The spiral plates 27 are evenly installed along the center position of the connecting pipe 21, and the fixed column 26 is fixedly installed between the spiral plates 27.

[0018] Example 3, based on Examples 1 and 2, with reference to Figures 8 to 9 The dust removal mechanism 4 includes a top cylinder 401, with fixed pipes 402 fixedly installed on both sides of the top cylinder 401. The end of the fixed pipe 402 away from the top cylinder 401 is fixedly connected to one end of the connecting pipe 36. A dust removal cylinder 403 is fixedly installed at the bottom of the top cylinder 401, and an air guide pipe 404 is fixedly installed at the bottom of the dust removal cylinder 403. The end of the air guide pipe 404 away from the dust removal cylinder 403 is connected to the air inlet of the fan 6. Through the connection between the fixed pipe 402 and the connecting pipe 36, dust particles enter the interior of the top cylinder 401 with the air and then flow downward into the interior of the dust removal cylinder 403. When entering the interior of the dust removal cylinder 403, the dust particles and air are guided into the interior of the dust removal bag 407 through the fixed cover 405 and pass through the dust removal bag 407 during the flow. The fixed cover 405 is fixedly installed on the top of the inner wall of the dust removal cylinder 403, and the dust removal bag 407 is fixedly installed on the inner wall of the fixed cover 405.

[0019] An outer baffle 409 is fixedly installed on the outside of the fixed cover 405. The outer baffle 409 is evenly installed on the outside of the fixed cover 405, and the side of the outer baffle 409 near the dust bag 407 is a raised arc surface. A top sliding cylinder 410 is fixedly installed on the top of the inner wall of the top cylinder 401. A connecting rod 406 is slidably installed on the inner wall of the top sliding cylinder 410. A pressure head 408 is fixedly installed at the bottom of the connecting rod 406. The dust bag 407 blocks the dust particles in the air. The air that has completed the dust removal enters the interior of the air guide duct 404 as it flows downward. Then, the air guide duct 404 guides the air into the air inlet of the fan 6. Driven by the fan 6, the air is discharged. The bottom of the pressure head 408 contacts the bottom of the inner wall of the dust bag 407. An inner pad 411 is fixedly installed on the top of the connecting rod 406. The top of the inner pad 411 is fixedly connected to the inner wall of the top cylinder 401, and the inner pad 411 is made of elastic material.

[0020] In use, place the device at the workpiece grinding position and align the suction head mechanism 2 with the grinding position. Then start the fan 6. Utilize the connection between the fan 6 and the dust removal mechanism 4 to connect the collection mechanism 3 and the dust removal mechanism 4 with the guide pipe 5 and the suction head mechanism 2. This allows the suction head mechanism 2 to draw air from the grinding position, causing the dust generated during grinding to be drawn into the suction head mechanism 2. The drawn dusty air then passes through the guide pipe 5 sequentially through the collection mechanism 3 and the dust removal mechanism 4, removing metal and dust particles from the dusty air. The air is then discharged through the fan 6.

[0021] In the suction head mechanism 2, the connection between the connecting pipe 21 and the guide pipe 5 allows the guide hood 23 to be aligned with the grinding position when the flue gas is being drawn in. This allows the dust generated during grinding to enter the interior of the guide hood 23 under the influence of the drawn air. Simultaneously, after the dusty air enters the interior of the guide hood 23, the louvers 24 installed inside the guide hood 23 block large foreign objects in the air. After the dusty air is drawn into the interior of the suction head cover 22, the inclined guide plate 25 inside the inner suction head cover 22 guides the drawn-in flue gas, causing it to flow into the interior of the connecting pipe 21. After the dusty air enters the interior of the connecting pipe 21, it is guided by the fixed column 26 and the spiral plate 27. The spiral plate 27 guides the passing dusty air, causing it to spiral through the connecting pipe 21.

[0022] In the collection mechanism 3, the connection between the fixed cylinder 31 and the guide pipe 5 allows the flue gas to enter the interior of the connecting cylinder 33 through the fixed cylinder 31. Simultaneously, as the flue gas flows downward, it first enters the interior of the inner guide cylinder 35 and flows from top to bottom. During this flow, the guide plate 38 inside the inner guide cylinder 35, with its spiral shape, causes the air to flow in a spiral motion as it flows downward. This spiral motion generates centrifugal force in the metal particles in the flue gas. After exiting the inner guide cylinder 35, the centrifugal force causes the metal particles to be thrown outward and enter the interior of the slag collection cylinder 34 for collection. Subsequently, dust particles flow upward with the air through the gap between the magnetic cylinder 37 and the inner guide cylinder 35. The magnetic force of the magnetic cylinder 37 attracts the residual metal particles in the air. Then, the dust particles pass through the through groove of the connecting cylinder 33 and enter the outer cover cylinder 32, and are introduced into the dust removal mechanism 4 through the connecting pipe 36.

[0023] In the dust removal mechanism 4, the connection between the fixed pipe 402 and the connecting pipe 36 allows dust particles to enter the interior of the top cylinder 401 with the air, and then flow downwards into the interior of the dust removal cylinder 403. When entering the interior of the dust removal cylinder 403, the fixed cover 405 guides the dust particles and air into the interior of the dust removal bag 407. During the flow, the air passes through the dust removal bag 407, which blocks the dust particles in the air. The air that has completed the dust removal then flows downwards into the interior of the air guide pipe 404. The air guide pipe 404 then guides the air into the air inlet of the fan 6, and the fan 6 drives the air out of the device.

Claims

1. A dust collection and recovery device for grinding mechanical workpieces, characterized in that, include: A frame (1) is provided with a guide pipe (5) fixedly installed on the top of the frame (1). A suction head mechanism (2) is fixedly installed at the end of the guide pipe (5) away from the frame (1). A collection mechanism (3) is fixedly installed inside the frame (1). The collection mechanism (3) is symmetrically installed along the center of the axis of the frame (1). The top of the collection mechanism (3) is connected to the bottom of the guide pipe (5). A dust removal mechanism (4) is installed between the collection mechanisms (3). The dust removal mechanism (4) is connected to the collection mechanism (3). A fan (6) is fixedly installed at the bottom of the outer side of the frame (1). The air inlet of the fan (6) is connected to the dust removal mechanism (4) through a pipe. The collecting mechanism (3) includes a fixed cylinder (31), the top end of which is connected to the bottom end of the guide pipe (5), and the bottom end of the fixed cylinder (31) penetrates the frame (1) and extends to its bottom. A connecting cylinder (33) is fixedly installed at the bottom end of the fixed cylinder (31), and an inner guide cylinder (35) is fixedly installed on the inner wall of the connecting cylinder (33). The upper section of the inner guide cylinder (35) is a tapered cylinder with an inner diameter that gradually decreases from top to bottom. The lower section of the inner guide cylinder (35) is a cylindrical cylinder. A slag guide plate (38) is fixedly installed on the cylindrical section of the inner wall of the inner guide cylinder (35). The slag guide plate (38) is evenly installed along the center position of the inner guide cylinder (35). The slag guide plate (38) is a spiral plate. A slag collection cylinder (34) is fixedly installed at the bottom end of the connecting cylinder (33). The inner diameter of the slag collection cylinder (34) gradually increases from top to bottom, and the slag collection cylinder (34) is located directly below the inner guide cylinder (35).

2. The dust collection and recovery device for grinding mechanical workpieces according to claim 1, characterized in that: A magnetic cylinder (37) is fixedly installed on the inner wall of the connecting cylinder (33). The inner diameter of the magnetic cylinder (37) gradually increases from top to bottom, and the magnetic cylinder (37) is located outside the inner guide cylinder (35). A through groove is evenly opened on the outer side of the connecting cylinder (33), and the through groove is located above the magnetic cylinder (37).

3. The dust collection and recovery device for grinding mechanical workpieces according to claim 2, characterized in that: An outer cover (32) is fixedly installed on the outside of the connecting cylinder (33). At the through groove of the outer cover (32) and the connecting cylinder (33), a connecting pipe (36) is fixedly installed on the outside of the outer cover (32). The end of the connecting pipe (36) away from the outer cover (32) is connected to the dust removal mechanism (4).

4. The dust collection and recovery device for grinding mechanical workpieces according to claim 1, characterized in that: The suction head mechanism (2) includes a connecting pipe (21), one end of which is connected to the outer flange of the guide pipe (5), and the other end of the connecting pipe (21) is fixedly installed with a suction head cover (22). An inclined guide plate (25) is fixedly installed on the inner wall of the suction head cover (22), and the inclined guide plate (25) is installed at an angle inside the suction head cover (22).

5. The dust collection and recovery device for grinding mechanical workpieces according to claim 4, characterized in that: The suction head cover (22) is fixedly installed with a flow guide cover (23) at one end away from the connecting pipe (21). Both the upper and lower ends of the flow guide cover (23) are provided with downwardly curved extension plates. The inner wall of the flow guide cover (23) is fixedly installed with a louvered plate (24). The louvered plate (24) is inclined downward from the inside to the outside, and the louvered plate (24) is evenly installed from top to bottom inside the flow guide cover (23).

6. The dust collection and recovery device for grinding mechanical workpieces according to claim 5, characterized in that: The inner wall of the connecting pipe (21) is fixedly installed with a spiral plate (27), the spiral plate (27) is evenly installed along the center position of the connecting pipe (21), and a fixing column (26) is fixedly installed between the spiral plates (27).

7. The dust collection and recovery device for grinding mechanical workpieces according to claim 6, characterized in that: The dust removal mechanism (4) includes a top cylinder (401), and fixed pipes (402) are fixedly installed on both sides of the top cylinder (401). The end of the fixed pipe (402) away from the top cylinder (401) is fixedly connected to one end of the connecting pipe (36). A dust removal cylinder (403) is fixedly installed at the bottom of the top cylinder (401), and an air guide pipe (404) is fixedly installed at the bottom of the dust removal cylinder (403).

8. The dust collection and recovery device for grinding mechanical workpieces according to claim 7, characterized in that: The end of the air duct (404) away from the dust collector (403) is connected to the air inlet of the fan (6). A fixed cover (405) is fixedly installed on the top of the inner wall of the dust collector (403), and a dust collection bag (407) is fixedly installed on the inner wall of the fixed cover (405).

9. The dust collection and recovery device for grinding mechanical workpieces according to claim 8, characterized in that: An outer baffle (409) is fixedly installed on the outside of the fixed cover (405). The outer baffle (409) is evenly installed on the outside of the fixed cover (405), and the side of the outer baffle (409) near the dust bag (407) is a raised arc surface.

10. A dust collection and recovery device for grinding mechanical workpieces according to claim 9, characterized in that: A top sliding cylinder (410) is fixedly installed on the top of the inner wall of the top cylinder (401). A connecting rod (406) is slidably installed on the inner wall of the top sliding cylinder (410). A pressure head (408) is fixedly installed at the bottom end of the connecting rod (406). The bottom of the pressure head (408) contacts the bottom of the inner wall of the dust collection bag (407). An inner pad column (411) is fixedly installed on the top of the connecting rod (406). The top of the inner pad column (411) is fixedly connected to the inner wall of the top cylinder (401), and the inner pad column (411) is made of elastic material.

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