Dust collection device of machine tool for grinding metal parts

Abstract

The invention discloses a dust collection device of a machine tool for grinding metal parts, which comprises a vertical pipe, the vertical pipe is connected with a dust collection pipe, a dust collection fan is mounted in the dust collection pipe, a dust removal mechanism is mounted in the vertical pipe, and the dust removal mechanism comprises a plurality of collection boxes fixed on the inner wall of the vertical pipe. A rotating shaft is vertically arranged in an opening in one side of the collecting box, an electromagnetic plate a and an electromagnetic plate b are symmetrically arranged on the two sides of the rotating shaft, an L-shaped liquid storage box is arranged on the outer wall of the vertical pipe, one end of the liquid storage box extends into the vertical pipe and is connected with a heat conduction plate, and a partition plate dividing the liquid storage box into an evaporation cavity and a condensation cavity is arranged in the liquid storage box. The evaporation cavity is located on the lower portion and filled with an expansion medium, and a liquid inlet pipe with an electromagnetic valve is arranged on the isolation plate. The electromagnetic plate a and the electromagnetic plate b can absorb and remove metal powder contained in air flow entering the vertical pipe, and the situation that the metal powder is discharged along with the air flow, and consequently environment pollution is caused is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of metal part grinding processing, in particular to a dust suction device of a machine tool for metal part grinding processing. Background Art

[0002] In the production and processing of existing iron-cobalt-nickel metal parts, in order to achieve the use accuracy, they are usually ground by grinding machine tools. A large amount of metal debris will be generated in the grinding process. In order to avoid the metal debris from polluting the environment, the metal debris needs to be cleaned during the processing process.

[0003] The existing patent application number "CN201711268759.8" for "explosion-proof dust suction device for grinding lathe" includes a chip collecting bucket and a dust suction cylinder. The chip collecting bucket is a conical member with a hollow structure. A temperature sensor is fixedly connected to the inner wall of the chip collecting bucket. The temperature sensor is connected to the controller data. The large-diameter end of the chip collecting bucket is aligned with the chip outlet of the grinding lathe, and the small-diameter end is connected to one end of the dust suction cylinder. The other end of the dust suction cylinder is provided with an air outlet. A fan is provided in the dust suction cylinder to transmit the air in the chip collecting bucket to the air outlet. The chip collecting bucket is provided with a fan. There is an explosion-proof component, and a filter component is arranged in the dust collection cylinder. The filter component is located between the explosion-proof component and the fan, and can collect and centrally process the metal debris generated in the metal grinding process to avoid the metal debris splashing and polluting the surrounding working environment. However, this patent still has defects: metal parts will not only generate metal debris but also a large amount of metal powder in the grinding process, and this patent can only remove the metal debris but cannot remove the metal powder, so that there will still be a certain amount of metal powder in the exhausted wind, which will have a certain impact on the environment.

[0004] Based on this, we propose a dust suction device for a machine tool for metal parts grinding. Summary of the invention

[0005] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a dust collection device for a machine tool for grinding metal parts.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A dust collection device for a machine tool for grinding metal parts, comprising a vertical pipe, the vertical pipe is connected to a dust collection pipe, a dust collection fan is installed in the dust collection pipe, a dust removal mechanism is installed in the vertical pipe, the dust removal mechanism comprises a plurality of collection boxes fixed on the inner wall of the vertical pipe, a rotating shaft is vertically arranged in an opening on one side of the collection box, an electromagnetic plate a and an electromagnetic plate b are symmetrically arranged on both sides of the rotating shaft, an L-shaped liquid storage tank is arranged on the outer wall of the vertical pipe, one end of the liquid storage tank extends into the vertical pipe and is connected to a heat conduction plate, an isolation plate is arranged in the liquid storage tank to separate it into an evaporation chamber and a condensation chamber, the evaporation chamber The cavity is located below and is filled with an expansion medium. A liquid inlet pipe with a solenoid valve is arranged on the isolation plate. The inside of the liquid inlet pipe is fixedly connected to an impeller through a rotating rod. The other end of the rotating rod passes through the outside of the liquid inlet pipe and is connected to a driving mechanism. A driving component for driving the rotating shaft to rotate is arranged at the connection between the upper end of the rotating shaft and the collecting box. A switch component for controlling the action of the driving mechanism is arranged at the connection between the lower end of the rotating shaft and the collecting box. A conductive strip is fixed to the inner wall of the dust suction pipe. The conductive strip is electrically connected to the solenoid valve installed on the inner wall of the liquid inlet pipe. A semicircular conductive head is fixed on one of the blades of the dust suction fan.

[0008] Preferably, the driving mechanism includes a pump air cavity arranged in the liquid storage tank, one end of the rotating rod extends into the pump air cavity and is connected to a reciprocating screw, the side wall of the reciprocating screw is threadedly connected to a slider, the slider is connected to the sliding plug through a push rod, the pump air cavity is connected to the pump air component a through a one-way tube a, the pump air cavity is connected to the pump air component b through a one-way tube b, the pump air component a and the pump air component b are both connected to the driving component, the pump air component a and the pump air component b both include air storage cavities, and the two air storage cavities are each connected to the driving component through a connecting tube.

[0009] Preferably, the driving assembly includes an arc-shaped groove arranged in the side wall of the collecting box, the connecting pipe is connected to the arc-shaped groove, and a conductive sliding plug and a conductive block b are respectively arranged on the two plane side walls of the arc-shaped groove, and the conductive sliding plug and the conductive block b are electrically connected to the solenoid valves arranged in the one-way tube a and the one-way tube b. When the conductive sliding plug and the conductive block b are in contact, the solenoid valve in the one-way tube a is closed, and the solenoid valve in the one-way tube b is closed and opened; when the conductive sliding plug and the conductive block b are disconnected, the solenoid valve in the one-way tube a is opened, and the solenoid valve in the one-way tube b is closed, and the conductive sliding plug is driven to slide in the arc-shaped groove by the airflow output by the connecting pipe.

[0010] Preferably, a solenoid valve is installed in the connecting pipe, and a pressure sensor is installed in the air storage chamber. The pressure sensor is connected to the solenoid valve in the corresponding connecting pipe through a PLC controller. Solenoid valves are installed on the inner walls of the one-way tube a and the one-way tube b, and the solenoid valves are electrically connected to the conductive block b.

[0011] Preferably, the switch assembly includes a conductive plate a and a conductive plate b arranged in the side wall of the axial hole of the collection box, and a conductive block a is arranged at one end of the rotating rod. When the conductive block a rotates to contact the conductive plate a, the circuit of the electromagnetic plate a is turned on, and when the conductive block a rotates to contact the conductive plate b, the circuit of the electromagnetic plate b is turned on.

[0012] Preferably, a condensation assembly is arranged in the condensation chamber, and the condensation assembly includes an air bag and a condensation tube connected to the top thereof, the pump air chamber inhales air from the outside through a one-way intake pipe, the pump air chamber is connected to the condensation tube through a one-way air supply pipe, and the other end of the condensation tube is connected to the outside through an exhaust pipe, and a liquid outlet pipe connecting the evaporation chamber and the condensation chamber is arranged on the isolation plate, and when the conductive block a is in a non-contact state with the conductive plate a and the conductive plate b, the solenoid valve in the liquid outlet pipe is electrically opened.

[0013] Preferably, a filter screen is installed on the inner wall of the standpipe.

[0014] Preferably, the expansion medium is dichloromethane.

[0015] The present invention has the following beneficial effects:

[0016] 1. By setting up a dust removal mechanism, the electromagnetic plate a and the electromagnetic plate b can absorb the metal powder contained in the air flow entering the vertical pipe to prevent it from being discharged along with the air flow and causing environmental pollution.

[0017] 2. During the vacuuming process, the positions of electromagnetic plate a and electromagnetic plate b will be constantly swapped. No matter whether electromagnetic plate a or electromagnetic plate b is transferred into the collection box, the electromagnetic plate inside the collection box will be powered off and demagnetized, and the electromagnetic plate outside the collection box will be powered on to generate magnetism, so that the adsorbed metal powder will fall into the collection box, and the metal powder adsorbed on electromagnetic plate a and electromagnetic plate b will be cleaned to avoid excessive metal powder adsorbed on electromagnetic plate a or electromagnetic plate b, thereby reducing the adsorption capacity of electromagnetic plate a or electromagnetic plate b, thereby reducing the adsorption effect of metal powder, and failing to remove the metal powder in the airflow.

[0018] 3. In this device, the heat contained in the metal debris and the air flow sucked into the riser is utilized to heat the expansion medium, thereby providing power to drive the electromagnetic plate a and the electromagnetic plate b to exchange positions. There is no need to set up additional power equipment to drive, thus reducing energy consumption and saving resources.

[0019] 4. When the speed of the dust collecting fan is faster, more metal powder will be sucked into the vertical pipe per unit time, and more metal powder will be adsorbed by electromagnetic plate a or electromagnetic plate b per unit time. The faster the dust collecting fan rotates, the faster the contact frequency between the conductive block b and the conductive strip will be, so the frequency of the electromagnetic valve installed on the inner wall of the liquid inlet pipe will be energized and opened, and the frequency of the position exchange between electromagnetic plate a and electromagnetic plate b will be higher, so that the metal powder adsorbed on electromagnetic plate a and electromagnetic plate b can be cleaned more frequently, ensuring the adsorption capacity of electromagnetic plate a and electromagnetic plate b for metal powder, and the rotation speed of electromagnetic plate a and electromagnetic plate b can be automatically adjusted according to the exhaust speed, and then the adsorption rate can be automatically adjusted, without the need for automatic control through software programs, and the degree of intelligence is high.

[0020] 5. By setting up a cooling mechanism, cold air enters the condenser through a one-way air supply pipe, which can cool the gaseous dichloromethane in the condensation chamber and turn it back into liquid, so that the dichloromethane can be recycled to avoid waste of resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic structural diagram of a dust collection device for a machine tool for metal parts grinding processing proposed by the present invention;

[0022] Figure 2 for Figure 1 Schematic cross-sectional view of the structure in the AA direction;

[0023] Figure 3 for Figure 1 A cross-sectional schematic diagram of the structure in the middle BB direction;

[0024] Figure 4 for Figure 1 A magnified schematic diagram of the structure at C in the middle;

[0025] Figure 5 for Figure 1 A magnified schematic diagram of the structure at D in the middle;

[0026] Figure 6 for Figure 1 A magnified schematic diagram of the structure at E in the middle;

[0027] Figure 7 for Figure 1 A magnified schematic diagram of the structure at F in the middle.

[0028] In the figure: 1 vertical pipe, 2 dust suction pipe, 3 dust suction fan, 4 collection box, 5 rotating shaft, 6 electromagnetic plate a, 7 electromagnetic plate b, 8 liquid storage tank, 801 heat conduction plate, 9 isolation plate, 901 evaporation chamber, 902 condensation chamber, 10 liquid inlet pipe, 11 liquid outlet pipe, 12 rotating rod, 13 impeller, 14 conductive plate a, 15 conductive plate b, 16 conductive block a, 17 conductive strip, 18 semicircular conductive head, 19 pump air cavity, 20 sliding plug, 21 reciprocating screw, 22 sliding block, 23 air storage cavity, 24 connecting pipe, 25 one-way pipe a, 26 one-way pipe b, 27 arc groove, 28 conductive sliding plug, 29 conductive block b, 30 air pressure sensor, 31 condenser, 32 one-way suction pipe, 33 one-way air supply pipe, 34 exhaust pipe, 35 filter. DETAILED DESCRIPTION

[0029] Reference Figure 1-7 A dust collection device for a machine tool for grinding metal parts comprises a vertical pipe 1, the vertical pipe 1 is connected with a dust collection pipe 2, a dust collection fan 3 is installed in the dust collection pipe 2, a dust removal mechanism is installed in the vertical pipe 1, and the dust removal mechanism comprises a plurality of collecting boxes 4 fixed on the inner wall of the vertical pipe 1, a rotating shaft 5 is vertically arranged in an opening on one side of the collecting box 4, and an electromagnetic plate a6 and an electromagnetic plate b7 are symmetrically arranged on both sides of the rotating shaft 5, an L-shaped liquid storage tank 8 is arranged on the outer wall of the vertical pipe 1, one end of the liquid storage tank 8 extends into the vertical pipe 1 and is connected to a heat conducting plate 801, and an isolation plate 9 is arranged in the liquid storage tank 8 to separate it into an evaporation chamber 901 and a condensation chamber 902, the evaporation chamber 901 is located at the bottom and is filled with an expansion medium, and the expansion medium is dichloromethane. It should be noted that the liquid storage tank 8 is in a fully sealed state. , which will not cause leakage of dichloromethane. A liquid inlet pipe 10 with a solenoid valve is arranged on the isolation plate 9. It should be noted that the solenoid valve installed on the inner wall of the liquid inlet pipe 10 is opened when powered on and closed when powered off. The inside of the liquid inlet pipe 10 is fixedly connected with an impeller 13 through a rotating rod 12. The other end of the rotating rod 12 passes through the outside of the liquid inlet pipe 10 and is connected to the driving mechanism. A driving component for driving the rotating shaft 5 to rotate is arranged at the connection between the upper end of the rotating shaft 5 and the collecting box 4. A switch component for controlling the action of the driving mechanism is arranged at the connection between the lower end of the rotating shaft 5 and the collecting box 4. A conductive strip 17 is fixed to the inner wall of the dust suction pipe 2. The conductive strip 17 is electrically connected to the solenoid valve installed on the inner wall of the liquid inlet pipe 10. A semicircular conductive head 18 is fixed on one of the blades of the dust suction fan 3. A filter screen 35 is installed on the inner wall of the vertical pipe 1.

[0030] The driving mechanism includes a pump air cavity 19 arranged in the liquid storage tank 8, one end of the rotating rod 12 extends into the pump air cavity 19 and is connected to a reciprocating screw 21, and the side wall of the reciprocating screw 21 is threadedly connected to a slider 22. It should be noted that the side wall of the slider 22 is against the inner wall of the pump air cavity 19, so that the slider 22 will not rotate with the reciprocating screw 21. The slider 22 is connected to the slide plug 20 through a push rod, and the pump air cavity 19 is connected to the pump air component a through a one-way tube a25. The pump air cavity 19 is connected to the pump air component b through a one-way tube b26. The pump air component a and the pump air component b are both connected to the driving component. The pump air component a and the pump air component b both include an air storage cavity 23, and the two air storage cavities 23 are each connected to the driving component through a connecting tube 24.

[0031] It should be noted that a through hole is opened on the inner wall of the pump air cavity 19 close to the liquid inlet pipe 10 . When the sliding plug 20 slides in the pump air cavity 19 in a sealed manner, the through hole can balance the pressure in the pump air cavity 19 .

[0032] The driving assembly includes an arc groove 27 arranged in the side wall of the collecting box 4, the connecting pipe 24 is connected to the arc groove 27, and the two plane side walls of the arc groove 27 are respectively provided with a conductive sliding plug 28 and a conductive block b29, and the conductive sliding plug 28 and the conductive block b29 are electrically connected to the electromagnetic valves arranged in the one-way tube a25 and the one-way tube b26. When the conductive sliding plug 28 and the conductive block b29 are in contact, the electromagnetic valve in the one-way tube a25 is closed, and the electromagnetic valve in the one-way tube b26 is closed and opened. When the conductive sliding plug 28 and the conductive block b29 are disconnected, the electromagnetic valve in the one-way tube a25 is opened, and the electromagnetic valve in the one-way tube b26 is closed. The conductive sliding plug 28 is driven by the airflow output by the connecting pipe 24 to slide in the arc groove 27.

[0033] It should be noted that the one-way tube a25 only allows the gas in the pump air chamber 19 to enter the air storage chamber 23 , and the one-way tube b26 only allows the gas in the air storage chamber 23 to enter the pump air chamber 19 .

[0034] It should be noted that the air pressure sensor 30 can sense the pressure value in the air storage chamber 23, and then control the opening and closing of the solenoid valve through the PLC controller, which is the existing technology.

[0035] A solenoid valve is installed in the connecting pipe 24, and an air pressure sensor 30 is installed in the air storage chamber 23. The air pressure sensor 30 is connected to the solenoid valve in the corresponding connecting pipe 24 through a PLC controller. Solenoid valves are installed on the inner walls of the one-way tube a25 and the one-way tube b26, and the solenoid valves are electrically connected to the conductive block b29.

[0036] The switch assembly includes a conductive plate a14 and a conductive plate b15 arranged in the side wall of the axial hole of the collection box 4. A conductive block a16 is arranged at one end of the rotating rod 12. When the conductive block a16 rotates to contact the conductive plate a14, the circuit of the electromagnetic plate a6 is turned on. When the conductive block a16 rotates to contact the conductive plate b15, the circuit of the electromagnetic plate b7 is turned on.

[0037] Furthermore, when the airflow containing metal debris flows upward through the riser 1, the filter 35 will filter out the metal debris therein, and the electromagnetic plate a6 will be energized to generate magnetism, which will adsorb the metal powder to prevent it from being discharged along with the airflow, thereby reducing environmental pollution. During the vacuuming process, the positions of the electromagnetic plate a6 and the electromagnetic plate b7 will be constantly swapped. Regardless of whether the electromagnetic plate a6 or the electromagnetic plate b7 is transferred to the collection box 4, the electromagnetic plate located in the collection box 4 will be powered off and demagnetized, and the electromagnetic plate located outside the collection box 4 will be energized to generate magnetism, so that the adsorbed metal powder will fall into the collection box 4, thereby cleaning the metal powder adsorbed on the electromagnetic plate a6 and the electromagnetic plate b7, avoiding excessive metal powder adsorbed on the electromagnetic plate a6 or the electromagnetic plate b7, reducing the adsorption capacity of the electromagnetic plate a6 or the electromagnetic plate b7, thereby reducing the adsorption effect of the metal powder, and failing to remove the metal powder in the airflow.

[0038] It is worth mentioning that when the speed of the dust suction fan 3 is faster, more metal powder will be sucked into the vertical pipe 1 per unit time, and more metal powder will be adsorbed by the electromagnetic plate a6 or the electromagnetic plate b7 per unit time. The faster the dust suction fan 3 rotates, the faster the frequency of contact between the conductive block a16 and the conductive strip 17 will be, so that the frequency of the solenoid valve installed on the inner wall of the liquid inlet pipe 10 being energized and opened will be higher, and then the frequency of the position exchange of the electromagnetic plate a6 and the electromagnetic plate b7 will be higher, so that the metal powder adsorbed on the electromagnetic plate a6 and the electromagnetic plate b7 can be cleaned more frequently, ensuring the adsorption capacity of the electromagnetic plate a6 and the electromagnetic plate b7 for metal powder, and the rotation speed of the electromagnetic plate a6 and the electromagnetic plate b7 can be automatically adjusted according to the exhaust speed, and then the adsorption rate can be automatically adjusted, without the need for automatic control through software programs, and the degree of intelligence is high.

[0039] A condensation assembly is arranged in the condensation chamber 902, and the condensation assembly includes an air bag and a condensation tube 31 connected to the top thereof. The pump air chamber 19 inhales air from the outside through a one-way air intake pipe 32, and the pump air chamber 19 is connected to the condensation tube 31 through a one-way air supply pipe 33. The other end of the condensation tube 31 is connected to the outside through an exhaust pipe 34. A liquid outlet pipe 11 connecting the evaporation chamber 901 and the condensation chamber 902 is arranged on the isolation plate 9, and when the conductive block a16 is in a non-contact state with the conductive plate a14 and the conductive plate b15, the solenoid valve in the liquid outlet pipe 11 is electrically opened.

[0040] It should be noted that the one-way air intake pipe 32 only allows cold air from the outside to enter the pump air cavity 19 , and the one-way air supply pipe 33 only allows cold air in the pump air cavity 19 to enter the condensation pipe 31 .

[0041] Furthermore, the cold air enters the condenser 31 through the one-way air supply pipe 33, which can cool the gaseous dichloromethane in the condensation chamber 902 and turn it back into liquid state, so that the dichloromethane can be recycled and resources can be avoided from being wasted.

[0042] In the present invention, the dust suction fan 3 is started, and the electromagnetic plate a6 and the electromagnetic plate b7 are energized. At this time, the conductive plate a14 is in contact with the conductive block a16, so the electromagnetic plate a6 is energized to generate magnetism, while the electromagnetic plate b7 is in a power-off state. The rotation of the dust suction fan 3 will generate suction force, and the metal debris and powder generated during the grinding of metal parts will be sucked into the vertical pipe 1. The filter screen 35 will intercept the larger metal debris in the airflow, and the metal powder will flow upward through the filter screen 35 with the airflow. The electromagnetic plate a6 is energized to generate magnetism, which will adsorb the metal powder in the airflow to prevent the metal powder from being discharged into the air along with the airflow, causing environmental pollution.

[0043] Since the metal debris generated during the grinding process of metal parts and the surrounding air contain a large amount of heat, when the metal debris enters the riser 1 with the hot air flow, the heat conducting plate 801 will be heated to heat the dichloromethane solution in the evaporation chamber 901. The dichloromethane solution absorbs heat and its temperature rises until it reaches its boiling point. The dichloromethane solution begins to evaporate into a gaseous state, and the dust suction fan 3 will drive the semicircular conductive head 18 to rotate during the rotation process. When the semicircular conductive head 18 rotates to contact the conductive strip 17, the solenoid valve installed on the inner wall of the liquid inlet pipe 10 is energized and opened. At this time, the gaseous dichloromethane in the evaporation chamber 901 will enter the condensation chamber 902 through the liquid inlet pipe 10. When the gaseous dichloromethane flows from bottom to top in the liquid inlet pipe 10, it will blow the multiple impellers 13 to rotate, drive the rotating rod 12 to rotate, and then drive the reciprocating screw 21 to rotate, drive the slider 22 to slide back and forth on the inner wall of the pump air chamber 19, and drive the sliding plug 20 to slide back and forth on the inner wall of the pump air chamber 19 to seal and slide back and forth.

[0044] Since the conductive sliding plug 28 is located at the other end of the arc groove 27 and is not in contact with the conductive block b29, the solenoid valve installed on the inner wall of the one-way tube a25 is powered off and opened, while the solenoid valve installed on the inner wall of the one-way tube b26 is powered off and closed. Under the action of the sliding plug 20, the external cold air will be drawn into the pump air cavity 19 through the one-way suction pipe 32, and then the cold air will enter the air storage cavity 23 and the condenser 31 through the one-way tube a25 and the one-way air supply pipe 33 respectively. The cold air enters the condenser The gaseous dichloromethane in the condensation chamber 902 will be cooled by the fan 31, so that it will be recondensed into liquid dichloromethane, and part of the cold air will enter one of the air storage chambers 23, which will gradually increase the pressure in the air storage chamber 23. As the dust collection proceeds, the solenoid valve installed on the inner wall of the liquid inlet pipe 10 will open once each time the dust collection fan 3 rotates one circle, so that the gaseous dichloromethane will enter the liquid inlet pipe 10 and blow the impeller 13 to rotate, and then as the dust collection proceeds, the gas in the air storage chamber 23 becomes more and more The more the pressure increases, the greater the pressure is. When the pressure exceeds the set value of the air pressure sensor 30 installed on the inner wall of the air storage chamber 23, the air pressure sensor 30 will send a signal to the PLC controller, thereby controlling the electromagnetic valve installed on the inner wall of the connecting pipe 24 connecting the air storage chamber 23 and the arc groove 27 to open, and the gas in the air storage chamber 23 can enter the arc groove 27 through the connecting pipe 24, pushing the conductive sliding plug 28 to quickly slide on the inner wall of the arc groove 27 until the conductive sliding plug 28 and the conductive block b2 are sealed. 9, at this time, the conductive sliding plug 28 will drive the rotating shaft 5 to rotate 180 degrees, and then drive the electromagnetic plate a6 and the electromagnetic plate b7 to rotate 180 degrees, and the positions of the electromagnetic plate a6 and the electromagnetic plate b7 are swapped. After the rotating shaft 5 rotates 180 degrees, the conductive block a16 is in contact with the conductive plate b15, the electromagnetic plate b7 is energized to generate magnetism, and the electromagnetic plate a6 is deenergized to demagnetize. At this time, the electromagnetic plate b7 will continue to absorb the metal powder, and the metal powder absorbed on the electromagnetic plate a6 will fall into the collection box 4.

[0045] Since the conductive sliding plug 28 is in contact with the conductive block b29 at this time, the solenoid valve installed on the inner wall of the one-way tube a25 is powered on and closed, while the solenoid valve installed on the inner wall of the one-way tube b26 is powered on and opened. As the dust collection proceeds, the air in the air storage chamber 23 is continuously drawn into the pump air chamber 19 through the one-way tube b26, and the pressure in the other air storage chamber 23 becomes smaller and smaller. When the pressure value in the air storage chamber 23 is less than the set value of the air pressure sensor 30, the air pressure sensor 30 sends a signal to control the solenoid valve installed on the inner wall of the connecting pipe 24 to open through the PLC controller. At this time, the arc groove 27 The air inside will be drawn into the air storage chamber 23, causing the conductive sliding plug 28 to slide in the opposite direction to the other end on the inner wall of the arc groove 27, driving the rotating shaft 5 to rotate 180 degrees in the opposite direction, and then driving the electromagnetic plate a6 and the electromagnetic plate b7 to rotate 180 degrees in the opposite direction, and the positions of the electromagnetic plate a6 and the electromagnetic plate b7 are swapped. At this time, the electromagnetic plate a6 is energized to generate magnetism and continues to adsorb metal powder, while the electromagnetic plate b7 is deenergized to demagnetize, and the adsorbed metal powder will fall into the collection box 4. This cycle is repeated, and the electromagnetic plates a6 and b7 continuously exchange the adsorbed metal powder, so as to continuously adsorb the metal powder in the exhaust airflow.

[0046] While the shaft 5 is continuously rotating back and forth, when the shaft 5 rotates 90 degrees, the conductive block a16 also rotates 90 degrees. At this time, the conductive block a16 is not in contact with the conductive plate a14 and the conductive plate b29. At this time, the solenoid valve installed on the inner wall of the liquid outlet pipe 11 is powered off and opened, and the liquid dichloromethane in the condensation chamber 902 will flow back to the evaporation chamber 901 through the liquid outlet pipe 11, so that the dichloromethane can be reused.

Claims

1. A dust collecting device for a machine tool for grinding metal parts, comprising a vertical pipe (1), characterized in that: The standpipe (1) is connected to a dust suction pipe (2), a dust suction fan (3) is installed in the dust suction pipe (2), a dust removal mechanism is installed in the standpipe (1), the dust removal mechanism comprises a plurality of collection boxes (4) fixed on the inner wall of the standpipe (1), a rotating shaft (5) is vertically arranged in an opening on one side of the collection box (4), an electromagnetic plate a (6) and an electromagnetic plate b (7) are symmetrically arranged on both sides of the rotating shaft (5), an L-shaped liquid storage tank (8) is arranged on the outer wall of the standpipe (1), one end of the liquid storage tank (8) extends into the standpipe (1) and is connected to the heat conduction plate (801), an isolation plate (9) is arranged in the liquid storage tank (8) to separate it into an evaporation chamber (901) and a condensation chamber (902), the evaporation chamber (901) is located at the bottom and filled with The device is filled with expansion medium. A liquid inlet pipe (10) with a solenoid valve is arranged on the isolation plate (9). The inside of the liquid inlet pipe (10) is fixedly connected to an impeller (13) via a rotating rod (12). The other end of the rotating rod (12) passes through the outside of the liquid inlet pipe (10) and is connected to a driving mechanism. A driving component for driving the rotating shaft (5) to rotate is arranged at the connection between the upper end of the rotating shaft (5) and the collecting box (4). A switch component for controlling the action of the driving mechanism is arranged at the connection between the lower end of the rotating shaft (5) and the collecting box (4). A conductive strip (17) is fixed on the inner wall of the dust suction pipe (2). The conductive strip (17) is electrically connected to the solenoid valve installed on the inner wall of the liquid inlet pipe (10). A semicircular conductive head (18) is fixed on one of the blades of the dust suction fan (3).

2. A dust collecting device for a metal parts grinding machine tool according to claim 1, characterized in that: The driving mechanism comprises a pump air chamber (19) arranged in a liquid storage tank (8); one end of the rotating rod (12) extends into the pump air chamber (19) and is connected to a reciprocating screw (21); a slider (22) is threadedly connected to the side wall of the reciprocating screw (21); the slider (22) is connected to a sliding plug (20) via a push rod; the pump air chamber (19) is connected to a pump air component a via a one-way tube a (25); the pump air chamber (19) is connected to a pump air component b via a one-way tube b (26); the pump air component a and the pump air component b are both connected to a driving component; the pump air component a and the pump air component b both comprise an air storage chamber (23); the two air storage chambers (23) are each connected to the driving component via a connecting tube (24).

3. A dust collecting device for a metal parts grinding machine tool according to claim 2, characterized in that: The driving assembly comprises an arc-shaped groove (27) arranged in the side wall of the collecting box (4); the connecting pipe (24) is connected to the arc-shaped groove (27); two plane side walls of the arc-shaped groove (27) are respectively provided with a conductive sliding plug (28) and a conductive block b (29); the conductive sliding plug (28) and the conductive block b (29) are electrically connected to the electromagnetic valves arranged in the one-way pipe a (25) and the one-way pipe b (26); when the conductive sliding plug (28) and the conductive block b (29) are in contact, the electromagnetic valve in the one-way pipe a (25) is closed, and the electromagnetic valve in the one-way pipe b (26) is closed and opened; when the conductive sliding plug (28) and the conductive block b (29) are disconnected, the electromagnetic valve in the one-way pipe a (25) is opened, and the electromagnetic valve in the one-way pipe b (26) is closed; the conductive sliding plug (28) is driven by the airflow output from the connecting pipe (24) to slide in the arc-shaped groove (27).

4. A dust collecting device for a metal parts grinding machine tool according to claim 3, characterized in that: The connecting pipe (24) is equipped with a solenoid valve, the air storage chamber (23) is equipped with a pressure sensor (30), the pressure sensor (30) is connected to the solenoid valve in the corresponding connecting pipe (24) through a PLC controller, and the inner walls of the one-way pipe a (25) and the one-way pipe b (26) are equipped with a solenoid valve, and the solenoid valve is electrically connected to the conductive block b (29).

5. A dust collecting device for a metal parts grinding machine tool according to claim 4, characterized in that: The switch assembly comprises a conductive plate a (14) and a conductive plate b (15) arranged in the side wall of the shaft hole of the collection box (4); a conductive block a (16) is arranged at one end of the rotating rod (12); when the conductive block a (16) rotates to contact the conductive plate a (14), the circuit of the electromagnetic plate a (6) is turned on; when the conductive block a (16) rotates to contact the conductive plate b (15), the circuit of the electromagnetic plate b (7) is turned on.

6. A dust collecting device for a metal parts grinding machine tool according to claim 5, characterized in that: A condensation assembly is arranged in the condensation chamber (902), and the condensation assembly includes an air bag and a condensation tube (31) connected to the top thereof. The pump air chamber (19) inhales air from the outside through a one-way air intake pipe (32). The pump air chamber (19) is connected to the condensation tube (31) through a one-way air supply pipe (33). The other end of the condensation tube (31) is connected to the outside through an exhaust pipe (34). A liquid outlet pipe (11) connecting the evaporation chamber (901) and the condensation chamber (902) is arranged on the isolation plate (9), and when the conductive block a (16) is in a non-contact state with the conductive plate a (14) and the conductive plate b (15), the solenoid valve in the liquid outlet pipe (11) is electrically opened.

7. The dust collecting device for a metal parts grinding machine tool according to claim 1, characterized in that: A filter screen (35) is installed on the inner wall of the vertical pipe (1).

8. The dust collecting device for a metal parts grinding machine tool according to claim 1, characterized in that: The expansion medium is dichloromethane.

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