Movable dust removal device for polishing workshop

Abstract

The invention discloses a movable dust removal device for a polishing workshop, and belongs to the technical field of dust removal equipment.The device comprises a cabinet, a first partition plate is arranged in the cabinet and divides the space in the cabinet into a first cavity and a second cavity, an air inlet pipe is connected to the cabinet, a filter cartridge is connected to the first partition plate, and an exhaust fan is arranged in the second cavity; an exhaust pipe is connected to the cabinet body, when the exhaust fan works, airflow entering the air inlet pipe is filtered by the filter cartridge and then exhausted from the exhaust pipe, a baffle assembly is arranged in the first cavity, and the baffle assembly comprises an electromagnetic chuck and a flow guide plate. The electromagnetic chuck is used for generating magnetic force to attract metal powder in airflow entrained powder, and the metal powder is distinguished from other powder; and a one-way valve assembly is arranged in the air inlet pipe, the one-way valve assembly is closed when the electromagnetic chuck does not work, the starting current and starting noise of the exhaust fan are reduced, and dust in the first cavity and the pipeline can be prevented from flowing back to the external environment during dust removal work.

Description

Technical Field

[0001] The present invention belongs to the technical field of dust removal equipment, and particularly relates to a mobile dust removal device for a polishing workshop. Background Art

[0002] During the processing operations of the head, grinding and polishing are usually required. During the grinding and polishing operations, some tiny particles will be worn off from the metal surface, forming metal debris. The mixture of these metal debris and abrasive debris forms dust. Excessive polishing dust in the workshop will affect human health. The existing treatment methods generally set a mobile dust removal device beside the grinding and polishing machine to adsorb the dust. For example, the utility model patent with the authorization announcement number CN 214319539 U discloses a mobile industrial dust collector, which uses a centrifugal fan to generate negative pressure in the air inlet pipe and sets a filter cartridge inside to filter the dust, so as to carry out the dust removal operation. However, there are still some problems with this mobile dust removal device. Some metal powders in the dust have certain recycling value, while the dust sucked into the existing dust removal device is mainly filtered by the filter cartridge, and the filtered dust falls into the dust collection drawer, and the metal powders in the dust cannot be distinguished. Summary of the Invention

[0003] Aiming at the above problems existing in the prior art, the technical problem to be solved by the present invention is to provide a mobile dust removal device for a polishing workshop to distinguish and collect the metal powders and the remaining powders in the dust.

[0004] Technical Solution: To solve the above technical problems, the technical solution adopted by the present invention is as follows:

[0005] A mobile dust removal device for a polishing workshop, including a cabinet body. A first partition plate is arranged inside the cabinet body, and the space inside the cabinet body is divided into a first cavity and a second cavity by the first partition plate. An air inlet pipe communicated with the first cavity is connected to the cabinet body. A filter cartridge is connected to the first partition plate. An exhaust fan is arranged in the second cavity. An exhaust pipe communicated with the exhaust fan is connected to the cabinet body. When the exhaust fan works, the air flow entering through the air inlet pipe is filtered by the filter cartridge and then discharged from the exhaust pipe. A baffle assembly for guiding the air flow is arranged at a position corresponding to the air inlet pipe in the first cavity, and the baffle assembly includes an electromagnetic chuck and a diversion plate connected to the electromagnetic chuck.

[0006] Preferably, a one-way valve assembly is arranged in the air inlet pipe. The one-way valve assembly includes a first retaining ring connected to the inner wall of the air inlet pipe, a valve plate for closing the first retaining ring, a spring connected to the valve plate, a second retaining ring connected to the spring, and an intermediate rod connected to the valve plate. A magnetic attracting member is arranged on the intermediate rod, and the magnetic force generated when the electromagnetic chuck works attracts the magnetic attracting member.

[0007] Preferably, the top end of the deflector is connected to the first partition plate.

[0008] Preferably, an air backwashing assembly is provided on the cabinet body. The air backwashing assembly includes an air backwashing pipe corresponding to the filter cartridge and a solenoid valve connected to the air backwashing pipe.

[0009] Preferably, a first dust collection drawer and a second dust collection drawer are connected to the cabinet body. The first dust collection drawer is located below the filter cartridge, and the second dust collection drawer is located below the electromagnetic chuck.

[0010] Preferably, a second partition plate is provided in the first cavity. The second partition plate is disposed between the first dust collection drawer and the second dust collection drawer.

[0011] Preferably, a control box electrically connected to the exhaust fan is provided on the cabinet body. The control box is electrically connected to the electromagnetic chuck.

[0012] Preferably, more than one filter cartridge is provided.

[0013] Preferably, the cabinet body is disposed on a base, and a plurality of casters are provided on the base.

[0014] Advantageous effects: Compared with the prior art, the present invention has the following advantages:

[0015] 1. By providing a baffle assembly, the baffle assembly can prevent the air flow entering from the air inlet pipe from directly impacting on the filter cartridge, thereby protecting the filter cartridge. The baffle assembly includes an electromagnetic chuck. By using the electromagnetic chuck to generate a magnetic force, the metal powder in the powder entrained by the air flow can be attracted, and the metal powder can be distinguished from the rest of the powder;

[0016] 2. By providing a first dust collection drawer and a second dust collection drawer, during dust cleaning, the powder on the filter cartridge falls into the first dust collection drawer, and the metal powder on the electromagnetic chuck falls into the second dust collection drawer. The metal powder in the second dust collection drawer has a high content and has a certain recycling value;

[0017] 3. A one-way valve assembly is provided in the air inlet pipe. When the electromagnetic chuck works, the one-way valve assembly can be controlled to open, facilitating the generation of negative pressure at the air inlet of the air inlet pipe, thereby performing dust removal operations. When the electromagnetic chuck does not work, the one-way valve assembly is closed under the action of the internal spring thereof. When the exhaust fan is just started, the inlet is closed, reducing the starting current and starting noise of the exhaust fan, protecting the exhaust fan, and the closed one-way valve assembly during dust cleaning work can prevent the dust in the first cavity and the pipeline from flowing back to the external environment. Description of the Drawings

[0018] Figure 1 is a schematic diagram of the overall structure of the dust removal device according to an embodiment of the present invention;

[0019] Figure 2Schematic structural diagram of the check valve assembly of the embodiment;

[0020] Figure 3 Schematic diagram of the air flow direction in the first cavity of the embodiment. Specific implementation manner

[0021] The present invention will be further clarified below in conjunction with specific embodiments. The embodiments are implemented on the premise of the technical solution of the present invention. It should be understood that these embodiments are only used to illustrate the present invention and not to limit the scope of the present invention.

[0022] As Figure 1 shown, a mobile dust removal device for a polishing workshop includes a cabinet body 1. The cabinet body 1 is integrally in a rectangular shape and is arranged on a base 91. Four casters 92 are provided on the bottom surface of the base 91. The cabinet body 1 can be pushed to a designated position through the casters 92. A first partition plate 2 is provided inside the cabinet body 1. The first partition plate 2 is horizontally arranged at the middle position inside the cabinet body 1. The first partition plate 2 divides the space inside the cabinet body 1 into a first cavity 11 and a second cavity. The first cavity 11 is located below, and the second cavity is above. An air inlet pipe 13 is connected to one side wall of the cabinet body 1. The air inlet pipe 13 is communicated with the first cavity 11. Two first through holes are provided on the first partition plate 2. A filter cartridge 3 is connected to the two first through holes of the first partition plate 2. The filter cartridge 3 adopts an existing pleated filter cartridge, and the filtration accuracy is selected according to needs. The air outside the filter cartridge 3 enters the filter cartridge after being filtered through the cylinder wall of the filter cartridge 3. A third partition plate 15 is provided inside the second cavity. The third partition plate 15 divides the second cavity into a lower twenty-first cavity 121 and an upper twenty-second cavity 122. The twenty-first cavity 121 is communicated with the space inside the filter cartridge 3 through the first through hole. An exhaust fan 4 is provided inside the twenty-second cavity 122. The exhaust fan 4 adopts an existing industrial blower. In this embodiment, the motor power of the exhaust fan 4 is 4KW, and the processing air volume reaches 1800 m³ / h. The air inlet of the exhaust fan 4 is communicated with the twenty-first cavity 121. An exhaust pipe 14 is connected to the top wall of the cabinet body 1. The exhaust pipe 14 is communicated with the air outlet of the exhaust fan 4. When the exhaust fan 4 works, a negative pressure is generated at the air inlet pipe 13. External air enters the cabinet body 1 from the air inlet pipe 13. The air flow entering from the air inlet pipe 13 is filtered through the filter cartridge 3 and then passes upward through the first through hole into the twenty-second cavity 122. The dust entrained in the air flow is intercepted by the filter cartridge 3, and then the air flow is discharged from the exhaust pipe 14 through the exhaust fan 4.

[0023] As Figure 1 、 Figure 2 and Figure 3As shown in the figure, a baffle assembly 5 is provided in the first cavity 11. The position of the baffle assembly 5 corresponds to the intake pipe 13. The baffle assembly 5 is used to guide the airflow entering from the intake pipe 13. The baffle assembly 5 includes an electromagnetic chuck 51 and a deflector 52. The deflector 52 is integrally arc-shaped and the convex part faces the side where the intake pipe 13 is located. The top end of the deflector 52 is connected to the first partition plate 2. A second through hole corresponding to the shape of the electromagnetic chuck 51 is provided on the deflector 52. The electromagnetic chuck 51 is embedded on the deflector 52 through the second through hole. The electromagnetic chuck 51 adopts an existing rectangular electromagnetic chuck. When the electromagnetic chuck 51 is energized, it generates a magnetic force. The working surface of the electromagnetic chuck 51 faces the intake pipe 13. The airflow entering from the intake pipe 13 impacts on the working surface of the electromagnetic chuck 51 and the deflector 52, and then is guided by the deflector 52 to enter the space around the filter cartridge 3 from both sides of the deflector 52. The airflow entering from the intake pipe 13 is blocked by the baffle assembly 5 and will not directly impact on the wall of the filter cartridge 3, thus protecting the filter cartridge 3. When the electromagnetic chuck 51 works, it generates a magnetic force, and the metal powder in the dust carried by the airflow is held by the electromagnetic chuck 51, and other powders in the airflow continue to move forward and are intercepted when passing through the filter cartridge 3. Figure 3 The black arrow in the figure indicates the airflow direction. Since the airflow carrying powder first impacts on the electromagnetic chuck 51, the magnetic force of the electromagnetic chuck 51 has a good holding effect on the metal powder.

[0024] As Figure 1As shown, an inverse blowing assembly 7 is provided on the cabinet body 1. The inverse blowing assembly 7 adopts an existing pulse inverse blowing device. The inverse blowing assembly 7 includes an inverse blowing pipe 71, a solenoid valve 72, and an air bag (the air bag is not shown in the figure). There are two inverse blowing pipes 71, and their positions correspond to the filter cartridges 3. The inverse blowing pipes 71 extend into the filter cartridges 3 from above. Small holes are provided on the inverse blowing pipes 71. The inverse blowing pipes 71 are connected to the air bag through the solenoid valve 72. During operation, the solenoid valve 72 is opened, and the compressed air in the air bag acts on the inside of the filter cartridge 3 through the inverse blowing pipe 71, resulting in an instantaneous positive pressure inside the filter cartridge 3, thereby blowing the dust on the outer wall of the filter cartridge 3 to achieve dust cleaning. At the bottom of the front of the cabinet body 1, a first dust collection drawer 81 and a second dust collection drawer 82 are connected. The first dust collection drawer 81 and the second dust collection drawer 82 are slidably connected to the cabinet body 1. The first dust collection drawer 81 and the second dust collection drawer 82 enter the first cavity 11. The first dust collection drawer 81 is located below the two filter cartridges 3, and the second dust collection drawer 82 is located below the electromagnetic chuck 51. A second partition plate 101 is provided in the first cavity 11. The second partition plate 101 is arranged between the first dust collection drawer 81 and the second dust collection drawer 82. The second partition plate 101 is vertically arranged, and the top end of the second partition plate 101 is connected to the lower end of the diversion plate 52. Thus, the second partition plate 101 divides the lower area of the first cavity 11. When the inverse blowing assembly 7 operates, the dust cleaned from the filter cartridge 3 falls into the first dust collection drawer 81. When the working surface of the electromagnetic chuck 51 adsorbs a certain thickness of metal powder, the electromagnetic chuck 51 is powered off and loses magnetism, and the metal powder drops into the second dust collection drawer 82. In order to prevent ordinary powder from entering the second dust collection drawer 82 through the arc-shaped gap between the diversion plate 52 and the second partition plate 101, an arc-shaped sealing plate is connected to the lower end of the diversion plate 52 to block the arc-shaped gap between the diversion plate 52 and the second partition plate 101.

[0025] As Figure 1 and Figure 2As shown in the figure, a check valve assembly 6 is provided in the intake pipe 13. The check valve assembly 6 includes a first retaining ring 61, a valve plate 62, a spring 63, a second retaining ring 64, an intermediate rod 65 and a magnetic member 66. The first retaining ring 61 is annular. The outer circumference of the first retaining ring 61 is connected to the inner wall of the intake pipe 13. A third through hole for air flow to pass through is formed in the middle of the first retaining ring 61. The valve plate 62 is arranged inside the first retaining ring 61. One end of the spring 63 is connected to the valve plate 62, and the other end of the spring 63 is connected to the second retaining ring 64. The outer circumference of the second retaining ring 64 is connected to the inner wall of the intake pipe 13 and a fourth through hole for air flow to pass through is formed in the middle of the second retaining ring 64. The valve plate 62 is pressed on the first retaining ring 61 under the elastic force of the spring 63 to close the third through hole. The intermediate rod 65 is a cylindrical rod including two ends, an outer end and an inner end. The outer end of the intermediate rod 65 is connected to the valve plate 62, and the inner end of the intermediate rod 65 extends towards the electromagnetic chuck 51. The magnetic member 66 is connected to the inner end of the intermediate rod 65. The magnetic member 66 is made of a material that can be magnetized, such as carbon steel. There is a distance d between the magnetic member 66 and the electromagnetic chuck 51, where 0 cm < d ≤ 3 cm. In this embodiment, d is equal to 2 cm. When the electromagnetic chuck 51 works, the magnetic force generated by the electromagnetic chuck 51 attracts the magnetic member 66. The magnetic member 66 drives the valve plate 62 to move through the intermediate rod 65. The valve plate 62 moves inwards against the elastic force of the spring 63 to open the third through hole of the first retaining ring 61. External air enters the first cavity 11 through the check valve assembly 6. When the exhaust fan 4 starts to work and the electromagnetic chuck 51 has not yet worked, since the valve plate 62 closes the first retaining ring 61 under the action of the spring 63, the check valve assembly 6 is closed, and no negative pressure will be generated at the intake pipe 13. The first cavity 11 is sealed, which is equivalent to sealing the air inlet of the exhaust fan 4, reducing the starting load of the exhaust fan 4, reducing the starting current of the motor of the exhaust fan 4, and protecting the exhaust fan 4. When the backwashing assembly 7 works, the electromagnetic chuck 51 loses power, the valve plate 62 resets under the elastic force of the spring 63, and the check valve assembly 6 seals the intake pipe 13 to prevent dust in the first cavity 11 and the pipeline connected to the intake pipe 13 from flowing back into the workshop.

[0026] As Figure 1 shown, a control box 16 is provided on the side wall of the cabinet 1. The control box 16 is electrically connected to the exhaust fan 4, the electromagnetic chuck 51 and the solenoid valve 72. A plurality of control buttons are provided on the control box 16, which are respectively used to control the start and stop of the exhaust fan 4, the power-on or power-off of the electromagnetic chuck 51, and the power-on or power-off of the solenoid valve 72. An existing PLC controller is provided in the control box 16. The PLC controller controls the operation of the exhaust fan 4, the electromagnetic chuck 51 and the solenoid valve 72 according to a preset program.

[0027] In this embodiment, the dust removal device is used in the head polishing workshop. When in use, the cabinet 1 is pushed beside the working polishing machine, and the dust removal device is controlled to work through the control box 16. First, the exhaust fan 4 is controlled to start. At this time, the electromagnetic chuck 51 is in a power-off state, the one-way valve assembly 6 closes the air inlet pipe 13, and the air inlet of the exhaust fan 4 is closed for starting, reducing the starting current and the noise during starting. After the exhaust fan 4 has started for a period of time, the electromagnetic chuck 51 is controlled to be powered on. The electromagnetic chuck 51 drives the valve plate 62 to move by attracting the magnetic part 66, thereby opening the one-way valve assembly 6. At this time, due to the action of the exhaust fan 4, a negative pressure is generated at the inlet of the air inlet pipe 13. The air inlet pipe 13 is connected to an external pipeline, and a dust collection hood is arranged at the end of the external pipeline. The dust collection hood is aligned with the working polishing position, so that the dust generated during the head polishing is sucked into the pipeline and then enters the cabinet 1. When passing through the electromagnetic chuck 51, the metal powder in the dust is attracted by the electromagnetic chuck 51, and the remaining dust is filtered when passing through the filter cartridge 3. During dust cleaning, the exhaust fan 4 stops working, and the electromagnetic chuck 51 loses power. At this time, the metal powder attracted on the electromagnetic chuck 51 falls into the second dust collection drawer 82; the solenoid valve 72 is powered on, and the reverse blowing pipe 71 sprays out air flow acting inside the filter cartridge 3, and the dust on the outer wall of the filter cartridge 3 is blown off and falls into the first dust collection drawer 81. At this time, since the valve plate 62 is reset under the elastic force of the spring 63, the one-way valve assembly 6 closes the air inlet pipe 13, and the dust in the first cavity 11, the air inlet pipe 13 and the external pipeline will not flow back to the working workshop through the external pipeline, preventing dust from escaping during the dust cleaning work.

[0028] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can still be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A mobile dust removal device for a polishing workshop, characterized in that, It includes a cabinet body (1), within which a first partition board (2) is provided. The first partition board (2) divides the space inside the cabinet body (1) into a first cavity (11) and a second cavity. An air inlet pipe (13) communicating with the first cavity (11) is connected to the cabinet body (1). A filter cartridge (3) is connected to the first partition board (2). An exhaust fan (4) is provided in the second cavity. An exhaust pipe (14) communicating with the exhaust fan (4) is connected to the cabinet body (1). When the exhaust fan (4) operates, the air flowing in through the air inlet pipe (13) is filtered by the filter cartridge (3) and then discharged through the exhaust pipe (14). At a position corresponding to the air inlet pipe (13) inside the first cavity (11), a baffle assembly (5) for guiding the air flow is provided. The baffle assembly (5) includes an electromagnetic chuck (51) and a flow guide plate (52) connected to the electromagnetic chuck (51).

2. The mobile dust removal device for a polishing workshop according to claim 1, characterized in that, A one-way valve assembly (6) is provided inside the air inlet pipe (13). The one-way valve assembly (6) includes a first retaining ring (61) connected to the inner wall of the air inlet pipe (13), a valve plate (62) for closing the first retaining ring (61), a spring (63) connected to the valve plate (62), a second retaining ring (64) connected to the spring (63), and an intermediate rod (65) connected to the valve plate (62). A magnetic component (66) is provided on the intermediate rod (65). When the electromagnetic chuck (51) operates, the magnetic force generated attracts the magnetic component (66).

3. The mobile dust removal device for a polishing workshop according to claim 1, characterized in that, The top end of the flow guide plate (52) is connected to the first partition board (2).

4. The mobile dust removal device for a polishing workshop according to claim 2, characterized in that, An air back-blowing assembly (7) is provided on the cabinet body (1). The air back-blowing assembly (7) includes a back-blowing pipe (71) corresponding to the filter cartridge (3) and an electromagnetic valve (72) connected to the back-blowing pipe (71).

5. The mobile dust removal device for a polishing workshop according to claim 4, characterized in that, A first dust collection drawer (81) and a second dust collection drawer (82) are connected to the cabinet body (1). The first dust collection drawer (81) is located below the filter cartridge (3), and the second dust collection drawer (82) is located below the electromagnetic chuck (51).

6. The mobile dust removal device for a polishing workshop according to claim 5, characterized in that, A second partition board (101) is provided inside the first cavity (11). The second partition board (101) is arranged between the first dust collection drawer (81) and the second dust collection drawer (82).

7. The mobile dust removal device for a polishing workshop according to claim 1, characterized in that, A control box (16) electrically connected to the exhaust fan (4) is provided on the cabinet body (1). The control box (16) is electrically connected to the electromagnetic chuck (51).

8. The mobile dust removal device for a polishing workshop according to claim 1, characterized in that, One or more filter cartridges (3) are provided.

9. The mobile dust removal device for a polishing workshop according to claim 1, characterized in that, The cabinet body (1) is arranged on a base (91). A plurality of casters (92) are provided on the base (91).

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