Dust recovery device
By designing a dust collection tray and flushing system for the dust recovery device, combined with dust suppression nozzles, the problems of dust suspension and explosion hazards in grinding machine processing were solved, achieving improvements in safety and economy.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DONGGUAN LINGRUI MACHINERY
- Filing Date
- 2025-05-28
- Publication Date
- 2026-06-30
AI Technical Summary
Dust generated during the grinding process can easily become suspended due to vibration and other factors, forming dust clouds that pose an explosion hazard. Existing technologies are insufficient to effectively prevent dust and explosions.
A dust recovery device was designed, including a collection tray and a flushing system. The dust is flushed out of the outer shell through a dust settling tank and a discharge tank. The flushing system is used to recycle the flushing liquid, and combined with dust suppression nozzles to spray and eliminate suspended dust, thus preventing the formation of dust clouds.
It effectively prevents dust from being generated by vibration, reduces the risk of dust explosion, improves equipment safety, and reduces costs by recycling the flushing fluid.
Smart Images
Figure CN224425258U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of CNC machining technology, and more specifically, to a dust recovery device. Background Technology
[0002] In related technologies, grinding machines are widely used in the mold industry for precision machining and surface polishing. However, the grinding process generates a large amount of dust, which eventually settles at the bottom of the working chamber and enters a dust recovery device through a dust collection port at the bottom of the chamber. However, this dust can easily be stirred up by vibrations or other factors, causing it to suspend in the air at a certain concentration and form a dust cloud within the working chamber. If a ignition source is present within the working chamber, there is a risk of a dust explosion. Utility Model Content
[0003] This application provides a dust recovery device to solve at least one of the above-mentioned technical problems.
[0004] The dust recovery device according to the embodiments of this application is used in a grinder. The grinder includes a housing, a working chamber is formed inside the housing, and a dust collection port communicating with the working chamber and the outside is provided. The dust recovery device includes:
[0005] The collection tray includes a dust settling section and a discharge section. The dust settling section is disposed on the bottom surface of the working chamber and forms a dust settling trough. The discharge section is connected to the dust settling section and extends out of the outer shell through the dust collection port. The discharge section forms a discharge trough that communicates with the dust settling trough.
[0006] A flushing system configured to flush dust from the settling tank out of the housing via the discharge channel.
[0007] The dust recovery device provided in this application flushes the dust in the dust settling tank out of the outer shell through the discharge tank, thereby preventing the dust in the dust settling tank from being generated by vibration or other reasons, thus avoiding the formation of dust clouds, which helps to prevent dust explosions and improve the safety of the equipment.
[0008] In some embodiments, the polishing machine includes an operating table whose orthographic projection on the bottom surface of the dust settling tank is located within the dust settling tank.
[0009] In this way, all the dust collected at the dust collection port can enter the dust settling tank, preventing dust from escaping.
[0010] In some embodiments, the bottom of the dust settling tank is inclined from high to low from the end furthest from the discharge end to the end closest to the discharge end.
[0011] In this way, the flushing fluid can automatically flow to the discharge section and be discharged under the action of gravity, avoiding the problem of flushing fluid retention that may occur at the bottom of the horizontal section, thus flushing away dust more efficiently.
[0012] In some embodiments, there is a connecting portion between the dust settling section and the discharge section, and the connecting portion is provided with a connecting groove that connects the dust settling tank and the discharge tank. The width of the connection between the connecting groove and the dust settling tank is greater than the width of the connection between the connecting groove and the discharge tank.
[0013] Thus, the connecting channel adopts a gradual design with a wide inlet and a narrow outlet, which gradually increases the flow rate of the flushing fluid as it passes through the connecting channel, which helps to improve the dust carrying capacity and reduce the possibility of clogging.
[0014] In some embodiments, the dust recovery device further includes a recovery component disposed outside the housing and communicating with the discharge trough, configured to filter dust from the flushing liquid and recover the flushing liquid.
[0015] In this way, the recycling unit can be used to recover dust and flushing fluid, facilitating subsequent recycling or other treatment.
[0016] In some embodiments, the recycling assembly includes a chassis and a filter screen disposed on the chassis.
[0017] In this way, the filter screen can be used to separate dust and flushing liquid, facilitating the recycling of dust and flushing liquid.
[0018] In some embodiments, the flushing system includes a water pump and a water pipe, the water pipe including an inlet disposed within the recycling assembly and an outlet on the settling tank, the water pump being configured to pump flushing fluid from the recycling assembly through the water pipe to the settling tank.
[0019] In this way, the flushing fluid can be recycled, which helps to save flushing fluid and reduce the operating cost of the flushing system.
[0020] In some embodiments, the chassis includes a first zone and a second zone, with a partition between the first zone and the second zone, the partition having a second filter hole, the filter screen being detachably disposed in the first zone, and the water pump being configured to pump flushing liquid in the second zone to the flushing outlet.
[0021] In this way, the partition can perform secondary filtration of the flushing liquid, which helps to prevent the flushing liquid from clogging the flushing system.
[0022] In some embodiments, the collection tray further includes a movable part rotatably connected to the discharge part, the movable part being provided with a drainage channel, the movable part being configured to rotate to move the drainage channel in order to control the connection or disconnection of the discharge channel and the recycling component.
[0023] In this way, the moving part can control the flow channel between the discharge tank and the recycling component by rotating and changing the position of the diversion tank.
[0024] In some embodiments, the dust recovery device further includes a dust suppression nozzle disposed on the inner wall of the working chamber and near the top of the working chamber, the dust suppression nozzle being configured to spray into the working chamber at preset intervals and / or when preset conditions are met.
[0025] In this way, the dust suppression nozzles can spray mist to wash away the dust suspended in the air inside the working chamber, which helps to further prevent dust from being stirred up.
[0026] Additional aspects and advantages of embodiments of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of embodiments of this application. Attached Figure Description
[0027] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, wherein:
[0028] Figure 1 This is a schematic diagram of the structure of the grinding machine according to an embodiment of this application;
[0029] Figure 2 This is a schematic diagram of the dust recovery device according to an embodiment of this application;
[0030] Figure 3 This is a schematic diagram of the structure of the collection tray of the dust recovery device according to an embodiment of this application;
[0031] Figure 4 This is a schematic diagram of the flushing system and recovery components of the dust recovery device according to an embodiment of this application;
[0032] Figure 5 This is a schematic diagram of the internal structure of the grinding machine according to an embodiment of this application;
[0033] Figure 6 This is a partial structural diagram of the flushing system and recovery components of the dust recovery device according to an embodiment of this application;
[0034] Figure 7 This is a schematic diagram of the internal structure of the grinding machine according to an embodiment of this application.
[0035] Key component symbols: Grinding machine 1000, Dust recovery device 100, Collection tray 10, Dust settling section 11, Dust settling tank 111, Dust collection plate 112, Discharge section 12, Discharge channel 121, Support leg 13, Connecting part 14, Connecting channel 141, Moving part 15, Drainage channel 151, Handle 152, Flushing system 20, Water pump 21, Water pipe 22, Inlet pipe 221, Outlet pipe 222, Pressure gauge 23, Flow meter 24, Float assembly 25, Diverter 26, Square tube 27, Flushing port 271, Recycling component 30, Chassis 31, Drain pipe 311, Drain valve 3111, First zone 312, Second zone 313, Partition 314, Filter screen 32, Cover plate 33, Dust suppression nozzle 40, Liquid storage tank 50, Control valve 60, Outer shell 200, Working chamber 210, Dust collection port 220, Equipment body 300, Installation platform 310, Dust collection trough 320, Operating table 330. Detailed Implementation
[0036] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application. In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting this application. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.
[0037] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection. They can refer to a mechanical connection or an electrical connection. They can refer to a direct connection or an indirect connection through an intermediate medium, and they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.
[0038] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0039] This disclosure provides many different embodiments or examples for implementing different structures of this application. To simplify the disclosure, specific examples of components and arrangements are described herein. Of course, these are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, various specific examples of processes and materials are provided in this application, but those skilled in the art will recognize the application of other processes and / or the use of other materials.
[0040] In related technologies, grinding machines are widely used in the mold industry for precision machining and surface polishing. However, the grinding process generates a large amount of dust, which eventually settles at the bottom of the working chamber and enters a dust recovery device through a dust collection port at the bottom of the chamber. However, this dust can easily be stirred up by vibrations or other factors, causing it to suspend in the air at a certain concentration and form a dust cloud within the working chamber. If a ignition source is present within the working chamber, there is a risk of a dust explosion.
[0041] Please see Figure 1 The dust recovery device 100 of this application embodiment is used for a grinder 1000. The grinder 1000 includes a housing 200. A working chamber 210 is formed inside the housing 200 and a dust collection port 220 is provided to connect the working chamber 210 with the outside. The dust recovery device 100 includes a collection tray 10 and a flushing system 20. The collection tray 10 includes a dust settling part 11 and a discharge part 12. The dust settling part 11 is provided on the bottom surface of the working chamber 210 and forms a dust settling trough 111. The discharge part 12 is connected to the dust settling part 11 and extends out of the housing 200 through the dust collection port 220. The discharge part 12 forms a discharge groove 121 that communicates with the dust settling trough 111. The flushing system 20 is configured to flush the dust in the dust settling trough 111 out of the housing 200 through the discharge groove 121.
[0042] The dust recovery device 100 provided in this application flushes the dust in the dust settling tank 111 out of the outer casing 200 through the discharge tank 121, thereby preventing the dust in the dust settling tank 111 from being generated by vibration or other reasons, thus avoiding the formation of dust clouds, which helps to prevent dust explosions and improve the safety of the equipment.
[0043] For details, please refer to Figure 1 and Figure 2 In this embodiment, the dust collection device 100 is used in the grinding machine 1000. In other embodiments, the dust collection device 100 can also be used on other CNC machine tools, such as lathes, milling machines, drilling machines, etc.
[0044] In this embodiment of the application, the grinding machine 1000 also includes a main body 300 and a shell 200 enclosing a working chamber 210, with the main body 300 installed inside the working chamber 210.
[0045] The equipment body 300 has an installation platform 310 at the bottom, a dust collection trough 320 in the middle of the installation platform 310, and a dust collection port 220 at the bottom of the dust collection trough 320.
[0046] In some embodiments, the dust collection tank 320 may be funnel-shaped with a larger opening at the top and a smaller opening at the bottom. A dust inlet is provided on its top surface. Both the dust inlet and the dust collection port 220 are rectangular. The size of the dust inlet is larger than that of the dust collection port 220. Dust generated by the main body 300 when processing workpieces enters the dust collection tank 320 through the dust inlet and is discharged from the dust collection port 220 after being collected in the dust collection tank 320.
[0047] Furthermore, to prevent dust from falling outside the dust settling tank 111, the dust collection port 220 is projected into the dust settling tank 111 in a direction perpendicular to the horizontal plane.
[0048] In this embodiment of the application, the collection tray 10 is an integral structure that is integrally processed. For example, the collection tray 10 can be formed by stamping sheet steel or other materials in one step.
[0049] Furthermore, the collection tray 10 also includes a dust collection plate 112 disposed on the side wall of the dust collection tank 111. The dust collection plate 112 is inclined and there are three dust collection plates 112. The three dust collection plates 112 are respectively disposed on the three side walls of the dust collection tank 320. The three dust collection plates 112 are parallel to the corresponding bottom surface of the dust collection tank 320 so that the three dust collection plates 112 enclose and form a funnel-shaped structure.
[0050] A dust discharge port is provided on the outer casing 200, which is located on the side wall of the outer casing 200 and near the bottom of the outer casing 200. The discharge part 12 extends from the dust discharge port to the outside of the outer casing 200 to discharge dust to the outside of the outer casing 200.
[0051] In this embodiment of the application, the flushing system 20 can discharge flushing liquid into the dust settling tank 111. Optionally, the flushing liquid can be water or cutting fluid. The specific composition of the flushing liquid needs to be selected according to actual needs, which will not be elaborated here.
[0052] Please see Figure 1 In some embodiments, the grinding machine 1000 includes an operating table 330, the orthographic projection of which onto the bottom surface of the dust settling tank 111 is located within the dust settling tank 111.
[0053] In this way, all the dust collected by the dust collection port 220 can enter the dust settling tank 111, preventing the dust from escaping.
[0054] Specifically, the operating table 330 is installed on the installation platform 310. The orthographic projection of the operating table 330 along the direction perpendicular to the horizontal plane is located inside the dust collection port 220 and simultaneously inside the dust settling tank 111.
[0055] Please see Figure 1 and Figure 3 In some embodiments, the bottom of the dust settling tank 111 is inclined from high to low from the end away from the discharge section 12 to the end near the discharge section 12.
[0056] In this way, the flushing fluid can automatically flow to the discharge section 12 and be discharged under the action of gravity, avoiding the problem of flushing fluid retention that may occur at the horizontal bottom, thus flushing the dust more efficiently.
[0057] Specifically, the bottom slope of the dust settling tank 111 is recommended to be between 1% and 5%, that is, for every 1 meter of horizontal extension, the vertical height decreases by 1 to 5 centimeters. The specific slope setting needs to be dynamically adjusted according to the flushing fluid used. For example, when using a more viscous flushing fluid, the slope can be appropriately increased to 3% to 5% to reduce the residue of flushing fluid and dust in the dust settling tank 111.
[0058] It should be noted that the slope of the bottom of the dust settling tank 111 is not necessarily better the larger it is. An increased slope will lead to an increase in water flow velocity. The flushing liquid with an excessively high flow velocity will cause excessive disturbance to the settled dust, which can easily generate secondary dust.
[0059] Furthermore, it is recommended that the height to length ratio of the tank be 1:3 to 1:5 to balance the settling time and the floor space occupied.
[0060] The inner surface roughness of the settling tank 111 should be controlled to avoid residues of flushing fluid and dust. For example, the roughness should be controlled to Ra≤3.2μm to reduce particle adhesion. If the equipment is used in a low-temperature environment, a heat tracing jacket should be considered to prevent the settling material from agglomerating.
[0061] Furthermore, the ground of the dust settling section 11 is also provided with support feet 13, which support the bottom of the dust settling section 11 so that the dust settling section 11 is set at an angle.
[0062] Please see Figure 3 In some embodiments, there is a connecting part 14 between the dust settling part 11 and the discharge part 12. The connecting part 14 is provided with a connecting groove 141 that connects the dust settling trough 111 and the discharge trough 121. The width of the connection between the connecting groove 141 and the dust settling trough 111 is greater than the width of the connection between the connecting groove 141 and the discharge trough 121.
[0063] Thus, the connecting groove 141 adopts a gradient design with a wide inlet and a narrow outlet, which gradually increases the flow rate of the flushing liquid as it passes through the connecting groove 141, which is beneficial to improving the dust carrying capacity and reducing the possibility of clogging.
[0064] Specifically, the wider inlet on the side of the dust settling section 11 can reduce the flow rate, avoid excessive disturbance of the settled dust by the flushing liquid, and prevent secondary dust generation; the narrower outlet on the side of the discharge section 12 can accelerate the fluid, enhance the dust carrying capacity, and reduce the risk of deposition in the connecting tank 141.
[0065] The width of the connecting groove 141 tapers linearly or streamlinedly from the end of the dust settling trough 111 to the end of the discharge trough 121. The shrinkage ratio (i.e., the ratio of the width at the connection between the connecting groove 141 and the dust settling trough 111 to the width at the connection between the connecting groove 141 and the discharge trough 121) should be controlled between 1.5 and 3.0. Thus, according to the continuity equation (Q=A×v), reducing the cross-sectional area can increase the flow velocity by 50% to 150%, enhancing the scouring force. Furthermore, the high-speed water flow forms a shear layer, effectively stripping away attached dust and reducing residue.
[0066] Furthermore, rounded corners can be provided at the corners where the connecting groove 141 connects to the dust settling groove 111 and at the corners where the connecting groove 141 connects to the discharge groove 121 to reduce energy loss and dust deposition.
[0067] In some embodiments, the bottom surface of the connecting part 14 is tilted at the same angle as the dust settling tank 111 (1% to 5%) to ensure that the dust flows naturally along the slope. This avoids flow field separation caused by abrupt angle changes and maintains laminar flow.
[0068] Please see Figure 1 and Figure 2 In some embodiments, the dust recovery device 100 further includes a recovery component 30 disposed outside the housing 200 and communicating with the discharge trough 121, configured to filter dust from the flushing liquid and recover the flushing liquid.
[0069] Thus, the recycling component 30 can be used to recycle dust and flushing fluid, facilitating subsequent recycling or other treatment.
[0070] Specifically, in this embodiment, the flushing system 20 is mounted on the recycling component 30, and the discharge section 12 overlaps the recycling component 30, so that the flushing liquid from the flushing system 20 rinsing the collection tray 10 flows into the recycling component 30. Furthermore, the recycling component 30 can serve as the water source for the flushing system 20; that is, the flushing system 20 pumps the flushing liquid recovered by the recycling component 30 to the collection tray 10 and uses it to rinse the dust from the collection tray 10.
[0071] Please see Figure 2 and Figure 4 In some embodiments, the recycling component 30 includes a chassis 31 and a filter 32 disposed on the chassis 31.
[0072] Thus, filter screen 32 can be used to separate dust and flushing liquid, facilitating the recycling of dust and flushing liquid.
[0073] Specifically, in this embodiment, both the chassis 31 and the filter screen 32 are rectangular grooves. The filter screen 32 is embedded in the chassis 31, and the discharge part 12 is positioned at the edge of the filter screen 32, connecting the discharge groove 121 to the internal space of the filter screen 32. The flushing liquid from the flushing system 20 to the collection tray 10 should first enter the filter screen 32, and after filtering out the dust inside, the flushing liquid should be recycled into the chassis 31.
[0074] In this embodiment, the filter screen 32 is provided with a first filter hole, and the diameter of the first filter hole should be smaller than the diameter of the dust.
[0075] Furthermore, the filter screen 32 and the chassis 31 are detachably connected, so that when the dust inside the filter screen 32 accumulates to a certain extent, the filter screen 32 can be directly removed, thus facilitating the transfer of dust.
[0076] Furthermore, each grinder 1000 can be equipped with multiple filters 32 for alternating use, thereby avoiding excessive time spent replacing and cleaning the filters 32, which would delay the use of the equipment and waste time.
[0077] Furthermore, in this embodiment, the filter screen 32 is also provided with two handles for carrying the filter screen 32, and the two handles are respectively installed on two opposite side walls of the filter screen 32.
[0078] In this embodiment, the recycling component 30 also includes a cover plate 33, which covers the part of the chassis 31 where the filter screen 32 is not installed, for the purpose of installing the flushing system 20, and at the same time prevents external objects from falling into the recycling component 30.
[0079] In this embodiment, a drain pipe 311 is also connected to the chassis 31. When there is too much flushing liquid stored in the chassis 31, it can be discharged through the drain pipe 311. A drain valve 3111 is installed on the drain pipe 311 to control the opening and closing of the drain pipe 311.
[0080] In some embodiments, the flushing system 20 includes a water pump 21 and a water pipe 22, the water pipe 22 including an inlet disposed in the recycling assembly 30 and an outlet disposed on the settling tank 111, the water pump 21 being configured to pump the flushing liquid in the recycling assembly 30 through the water pipe 22 to the settling tank 111.
[0081] In this way, the flushing fluid can be recycled, which helps to save flushing fluid and reduce the operating cost of the flushing system 20.
[0082] Specifically, in this embodiment, the water pump 21 is installed on the cover plate 33 of the recycling component 30. The water pipe 22 includes an inlet pipe 221 and an outlet pipe 222. One end of the inlet pipe 221 is connected to the water pump 21, and the other end is provided with an inlet. One end of the outlet pipe 222 is connected to the water pump 21, and the other end is provided with an outlet. The cover plate 33 is provided with a through hole. The inlet pipe 221 is inserted into the chassis 31 through the through hole and the inlet is submerged in the flushing liquid for extracting the flushing liquid in the chassis 31. The outlet pipe 222 is placed at the dust settling tank 111 and the outlet is inserted into the dust settling tank 111 so that the flushing liquid discharged from the outlet can flush the dust in the dust settling tank 111.
[0083] Furthermore, in this embodiment of the application, the flushing system 20 also includes a pressure gauge 23 and a flow meter 24. Both the pressure gauge 23 and the flow meter 24 are connected to the water outlet pipe 222 to monitor the water flow and water pressure in real time, thereby monitoring the water flow status so that it can be detected in time when the pipe is blocked and no water is discharged.
[0084] In this embodiment of the application, the flushing system 20 also includes a float assembly 25. The float assembly 25 monitors the water level of the flushing liquid in the chassis 31 by the floating and sinking of the float, and issues an alarm or signal when the water level of the flushing liquid in the chassis 31 is too high or too low.
[0085] In some embodiments, the flushing system 20 further includes a control component electrically connected to the float assembly 25 and the water pump 21. When the water level of the flushing liquid in the chassis 31 is too low, the float assembly 25 sends a first signal to the control component. Upon receiving the first signal, the control component can control the water pump 21 to reduce the pumping volume and issue an alarm to remind the user to add flushing liquid. Further, in some embodiments, the drain valve 3111 can also be an electric drain valve 3111. The control component is electrically connected to the electric drain valve 3111. When the water level of the flushing liquid in the chassis 31 is too high, the float assembly 25 sends a second signal to the control component. Upon receiving the second signal, the control component can control the water pump 21 to increase the pumping volume or control the electric drain valve 3111 to open to drain excess flushing liquid, and close it after the flushing liquid level returns to normal.
[0086] In this embodiment of the application, the flushing system 20 also includes a diverter 26, which is connected to the outlet pipe 222 and divides the outlet pipe 222 into two paths to form two water outlets. Both water outlets extend into the dust settling tank 111, and the two water outlets are spaced apart to improve the flushing effect.
[0087] Please see Figure 5 In some embodiments, a square tube 27 is also provided inside the working chamber 210. The square tube 27 is located on the side wall of the working chamber 210 near the installation platform 310. The square tube 27 is arranged along the side wall of the working chamber 210 and is connected to the water outlet pipe 222 of the water pump 21. A flushing port 271 is provided on the square tube 27. The water pump 21 can pump the flushing liquid to the square tube 27 and flush it out from the flushing port 271 to flush the dust in the dust collection tank 320 and avoid the accumulation of dust in the dust collection tank 320.
[0088] In other embodiments, multiple flushing ports 271 may be provided, and the multiple flushing ports 271 are spaced apart along the length of the square tube 27 to flush the dust collection tank 320 at multiple angles.
[0089] Please see Figure 2 , Figure 4 and Figure 6 In some embodiments, the chassis 31 includes a first zone 312 and a second zone 313, with a partition 314 between the first zone 312 and the second zone 313. The partition 314 is provided with a second filter hole. The filter screen 32 is detachably disposed in the first zone 312. The water pump 21 is configured to pump the flushing liquid in the second zone 313 to the flushing port 271.
[0090] Thus, the partition 314 can perform secondary filtration of the flushing liquid, which helps to prevent the flushing liquid from clogging the flushing system 20.
[0091] Specifically, in this embodiment, there are two second zones 313, which are located on both sides of the first zone 312. There are also two partitions 314, which are located at the junction of the first zone 312 and the two second zones 313.
[0092] Furthermore, the partition 314 is detachably mounted on the chassis 31, and the partition 314 is evenly provided with a plurality of second filter holes, the diameter of which is smaller than that of the first filter holes on the filter screen 32, so as to further filter the flushing liquid.
[0093] In this embodiment of the application, the water inlet pipe 221 is connected to the second zone 313 on one side of the first zone 312, and the float switch is set in the second zone 313 on the other side of the first zone 312, so as to avoid the water pump 21 interfering with the float switch's judgment of the water level.
[0094] Please see Figure 3 In some embodiments, the collection tray 10 further includes a movable part 15, which is rotatably connected to the discharge part 12. The movable part 15 is provided with a diversion groove 151. The movable part 15 is configured such that rotating the movable part 15 causes the diversion groove 151 to move, thereby controlling the connection or disconnection between the discharge groove 121 and the recycling assembly 30.
[0095] Thus, by rotating, the movable part 15 changes the position of the diversion channel 151, thereby controlling the flow channel between the discharge channel 121 and the recovery component 30.
[0096] Specifically, in this embodiment, the movable part 15 is mounted on the edge of the filter screen 32, and the discharge groove 121 is connected to the inside of the filter screen 32 through the drainage groove 151. The movable part 15 is rotatably connected to the end of the discharge part 12. In this way, when the filter screen 32 needs to be replaced, the movable part 15 can be lifted to avoid the movable part 15 from obstructing the replacement of the filter screen 32.
[0097] Furthermore, the movable part 15 is also provided with a handle 152, which is used to rotate the movable part 15.
[0098] Please see Figure 7 In some embodiments, the dust collection device 100 further includes a dust suppression nozzle 40, which is disposed on the inner wall of the working chamber 210 and near the top of the working chamber 210. The dust suppression nozzle 40 is configured to spray into the working chamber 210 at preset intervals and / or when preset conditions are met.
[0099] In this way, the dust suppression nozzle 40 can spray mist to wash away the dust suspended in the air inside the working chamber 210, which helps to further prevent dust from being stirred up.
[0100] Specifically, in this embodiment, the explosion-proof system also includes a liquid storage tank 50, which is used to supply liquid to the dust suppression nozzle 40. Furthermore, the liquid stored in the liquid storage tank 50 can be water or cutting fluid. Specifically, the liquid stored in the liquid storage tank 50 needs to be selected according to the metal being processed by the grinder 1000.
[0101] The dust suppression nozzle 40 is an atomizing nozzle that can atomize and spray the liquid stored in the liquid storage tank 50. The resulting water mist interacts with the dust particles, causing the dust to become heavier, agglomerate, and settle. Then, it flows into the dust settling tank 111 through the dust collection port 220, thereby purifying the air and reducing the concentration of dust in the air.
[0102] Furthermore, in this embodiment, the dust suppression nozzle 40 is horizontally positioned, allowing the water mist to diffuse laterally, covering a larger area and thus more effectively intercepting the dust. Additionally, the horizontally sprayed droplets slowly sink due to gravity, prolonging their suspension time in the air (approximately 5-30 seconds), increasing their contact with dust particles, and further improving dust interception efficiency.
[0103] In this embodiment of the application, the explosion-proof system also includes a control valve 60, which is used to control the opening or closing of the dust suppression nozzle 40. The control valve 60 is electrically connected to the controller, and the controller can control the dust suppression nozzle 40 to spray once every preset time through the control valve 60 to periodically eliminate dust in the air inside the working chamber 210.
[0104] Furthermore, the dust suppression nozzle 40 can also be linked with a dust alarm. That is, if a dust alarm is installed in the working chamber, the controller can also control the dust suppression nozzle 40 to spray once when the dust alarm sounds or the dust concentration is greater than the preset value, in order to eliminate the dust in the air in the working chamber 210.
[0105] In some embodiments, there are multiple dust suppression nozzles 40, which are spaced apart along the side wall of the working chamber 210.
[0106] In this way, multiple dust suppression nozzles 40 can flush the suspended dust in the working chamber 210 from multiple angles, which helps to avoid the problem that a single dust suppression nozzle 40 cannot flush the dust accumulated in certain corners, resulting in excessively high local dust concentration and ultimately dust explosion.
[0107] Specifically, in this embodiment, due to the obstruction of the main body 300, the dust concentration on the side of the main body 300 away from the door of the working chamber 210 is low. Multiple dust suppression nozzles 40 are arranged on the inner walls of the three working chambers 210 near the door of the working chamber 210. Multiple dust suppression nozzles 40 are provided on each inner wall and are spaced apart.
[0108] Furthermore, multiple dust suppression nozzles 40 are connected in series and controlled uniformly by a control valve 60. In other embodiments, multiple dust suppression nozzles 40 can also be connected in parallel and controlled individually or in zones by multiple control valves 60.
[0109] In the description of this specification, the references to "certain embodiments," "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples" refer to specific features, structures, materials, or characteristics described in connection with the described embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0110] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the stated features. In the description of this application, "multiple" means at least two, such as two or three, unless otherwise explicitly specified.
[0111] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application, the scope of which is defined by the claims and their equivalents.
Claims
1. A dust recovery device for a sander, the sander including a housing in which a work chamber is formed and a dust collection port is formed which communicates with the work chamber and the outside, characterized by, The dust recovery device includes: The collection tray includes a dust settling section and a discharge section. The dust settling section is disposed on the bottom surface of the working chamber and forms a dust settling trough. The discharge section is connected to the dust settling section and extends out of the outer shell through the dust collection port. The discharge section forms a discharge trough that communicates with the dust settling trough. A flushing system configured to flush dust from the settling tank out of the housing via the discharge channel.
2. The dust recovery device according to claim 1, characterized in that, The grinding machine includes an operating table, the orthographic projection of which is located on the bottom surface of the dust settling tank within the dust settling tank.
3. The dust recovery device according to claim 1, characterized in that, The bottom of the dust settling tank is inclined from high to low from the end furthest from the discharge section to the end closest to the discharge section.
4. The dust recovery device according to claim 1, characterized by There is a connecting part between the dust settling section and the discharge section. The connecting part is provided with a connecting groove that connects the dust settling tank and the discharge tank. The width of the connection between the connecting groove and the dust settling tank is greater than the width of the connection between the connecting groove and the discharge tank.
5. The dust recovery device according to claim 1, characterized by The dust recovery device further includes a recovery component disposed on the outside of the housing and connected to the discharge trough, configured to filter dust from the flushing liquid and recover the flushing liquid.
6. The dust recovery device according to claim 5, characterized in that, The recycling assembly includes a chassis and a filter screen mounted on the chassis.
7. The dust recovery device according to claim 6, characterized in that, The flushing system includes a water pump and a water pipe. The water pipe includes an inlet located in the recycling assembly and an outlet located on the settling tank. The water pump is configured to pump the flushing liquid in the recycling assembly through the water pipe to the settling tank.
8. The dust recovery device according to claim 7, characterized in that, The chassis includes a first zone and a second zone, with a partition between the first zone and the second zone. The partition is provided with a second filter hole. The filter screen is detachably installed in the first zone. The water pump is configured to pump the flushing liquid in the second zone to the flushing port.
9. The dust recovery device according to claim 6, characterized in that, The collection tray also includes a movable part rotatably connected to the discharge part. The movable part is provided with a diversion groove. The movable part is configured such that rotating the movable part moves the diversion groove to control the connection or disconnection between the discharge groove and the recycling component.
10. The dust recovery device according to claim 7, characterized in that, The dust recovery device also includes a dust suppression nozzle, which is disposed on the inner wall of the working chamber and near the top of the working chamber. The dust suppression nozzle is configured to spray into the working chamber at preset intervals and / or when preset conditions are met.