Pre-filling type self-excitation dust removal device

Abstract

The invention relates to the technical field of dust removal, and discloses a pre-filling type self-excitation dust removal device which comprises a machine base, polishing wheels are symmetrically installed on the outer surface of the machine base, a fan module is installed at the top of the machine base, a slope water tank is installed at the bottom of the machine base, a water tank set is installed above the slope water tank, and a pre-wetting module is installed in the slope water tank. The pre-wetting module communicates with the slope water tank and the water tank set, the guide shells are installed on the upper side and the lower side of the polishing wheel correspondingly, the water mist separation plate set is installed above the water tank set, and the water tank set is pre-wetted before starting, so that generation of dry dust is effectively restrained; compared with the situation that dry metal dust in a bin rapidly rises to reach the explosion limit concentration and explodes when meeting a fire source at the moment that a fan is started in a traditional dust removal device, the dust removal device greatly reduces flying of the metal dust, reduces explosion risks from the source, avoids damage to equipment, damage to production facilities and fire disasters, practically guarantees life safety of field personnel, and improves the working efficiency. The economic loss is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of dust removal, and specifically to a pre-filled self-excited dust removal device. Background Art

[0002] Grinding equipment is a mechanical tool for surface treatment, and its main functions include material grinding, polishing, and finishing. It has important application values in fields such as industrial manufacturing, construction, and artistic creation. The equipment mainly consists of core components such as a power system, a rotating grinding tool, a support structure, and a control system. When the equipment is operating, the high-speed frictional action between the grinding tool and the workpiece will generate significant particulate pollution. These suspended particles will not only reduce the processing accuracy, but also cause environmental pollution and pose a threat to the safety and health of operators.

[0003] However, there are still some problems with the existing self-excited dust removal devices. At the initial stage of dust treatment, when the traditional dust removal device starts the fan structure to absorb dust, the air flow state in the chamber is extremely unstable at the moment of startup. At this time, the dry metal dust accumulated in the chamber will be quickly lifted under the strong suction of the fan, forming dust. Since metal dust is flammable and explosive, especially in a relatively enclosed space, the flying metal dust is extremely likely to reach the explosion limit concentration. Once it encounters a fire source such as an electrostatic spark or a spark generated by equipment friction, it will trigger a violent explosion. This will not only cause devastating damage to the grinding equipment, damage the equipment components and deform the structure, resulting in the scrapping of the equipment, but also cause serious damage to the surrounding production facilities, and even trigger a fire, endangering the lives of on-site operators and causing immeasurable casualties and economic losses.

[0004] In addition, during the grinding operation, a large amount of impurities will be mixed into the water in the water tank during the polishing process. These impurities include metal chips, fine particles generated by the wear of the grinding tool, and other pollutants generated during the processing. The water pump needs to operate continuously for a long time to ensure the normal operation of the dust removal device. However, the impurities in the water will continuously scour and wear the key components of the water pump, such as the impeller, pump shaft, and seal. After the impeller is worn, the shape and size of its blades change, resulting in a significant decrease in the water pumping efficiency of the water pump, unable to meet the water volume and water pressure requirements for dust removal. The wear of the pump shaft will cause vibration and noise when the water pump is operating, further affecting the stability of the equipment, and may even cause the water pump to jam and unable to operate normally. The damage of the seal will cause the water pump to leak water, not only wasting water resources, but also may damage the electrical system of the equipment, triggering faults such as short circuits. Frequent failures make the water pump need to be repaired or replaced frequently, which not only increases the maintenance cost of the enterprise, but also causes the grinding equipment to stop frequently, reducing the production efficiency and affecting the normal production plan of the enterprise.

[0005] Therefore, the present invention proposes a pre-filled self-excited dust removal device. Summary of the Invention

[0006] The object of the present invention is to provide a pre-filled self-excited dust removal device to solve the problems raised in the above-mentioned background technology.

[0007] To achieve the above object, the present invention provides the following technical solution: A pre-filled self-excited dust removal device, including a machine base, polishing wheels are symmetrically installed on the outer surface of the machine base, a fan module is installed on the top of the machine base, a slope water tank is installed at the bottom of the machine base, a water tank group is installed above the slope water tank, a pre-wetting module is installed inside the slope water tank, and the pre-wetting module is in communication with the slope water tank and the water tank group. Guide shells are installed on both the upper and lower sides of the polishing wheel, and a water mist separation plate group is installed above the water tank group; Start the pre-wetting module in advance. Through its communication relationship with the slope water tank and the water tank group, the water in the slope water tank is transported to the water tank group to pre-wet the water tank group. Subsequently, start the fan module to start the dust suction operation, and stop the pre-wetting module after a delay. This operation aims to effectively inhibit the generation of dry dust by pre-wetting the water tank group and reduce the dust emission during the dust suction process.

[0008] Preferably, the water tank group includes a flowing water tank and a water collection cavity. The flowing water tank is fixedly installed on one side of the machine base close to the polishing wheel, and holes communicating with the slope water tank are provided on both sides thereof. The water collection cavity is fixedly installed inside the machine base and is located above the pre-wetting module.

[0009] Preferably, the pre-wetting module includes a water pump. The water pump is installed in the middle of the slope water tank and on the side far from the polishing wheel, and is communicated with the water collection cavity through an external pipeline one. The bottom of the water collection cavity is fixedly communicated with an external pipeline two, and the other side thereof is communicated with the flowing water tank. An external spray head in contact with the bottom of the slope water tank is installed at the bottom of the water pump.

[0010] Preferably, the pre-wetting module further includes a water level sensor installed inside the flowing water tank and on the convex surface of the slope water tank, and a flow sensor installed in the middle of the external pipeline two.

[0011] Preferably, a baffle is fixedly connected inside the slope water tank.

[0012] Preferably, the guide shell includes a dust baffle, a water receiving tray and a guide arc plate. The dust baffle is fixedly connected to the outer surface of the machine base and above the polishing wheel. The water receiving tray is fixedly connected to the outer surface of the machine base and below the polishing wheel. The guide arc plate is fixedly connected to the outer surface of the flowing water tank and is concentric with the polishing wheel.

[0013] Preferably, sharp parts are provided on the sides of the guide arc plate and the baffle close to the polishing wheel, and the bottom of the sharp part is disk-shaped.

[0014] Preferably, the water mist separation plate group includes a water mist anti-pressure plate and an arc-shaped water mist separation plate. The water mist anti-pressure plate is installed in the machine base and above the water collection cavity, and the arc-shaped water mist separation plate is installed in the machine base and above the water mist anti-pressure plate.

[0015] Preferably, the water mist anti-pressure plate is composed of several anti-pressure plates, and the anti-pressure plates on both the left and right sides thereof are inclined towards the middle.

[0016] Preferably, both sides of the arc-shaped water mist separation plate are inclined downward as a whole. The arc-shaped water mist separation plate is composed of several arc-shaped separation plates. The arc-shaped openings of each arc-shaped separation plate face upward. At the same time, in adjacent two layers, the arc-shaped separation plates in the lower layer are respectively located on both sides below the arc-shaped separation plates in the upper layer.

[0017] Preferably, both sides of the machine base are of detachable design. At the same time, guide rails are symmetrically installed on the inner wall of the machine base. The water mist anti-pressure plate and the arc-shaped water mist separation plate are both slidably connected to the guide rails; By adopting the above scheme, the water mist anti-pressure plate and the arc-shaped water mist separation plate can be cleaned regularly.

[0018] Compared with the prior art, the beneficial effects of the present invention are: 1. By pre-wetting the water tank group before startup, the generation of dry dust is effectively inhibited. Compared with the situation that when a traditional dust removal device starts the fan, the dry metal dust in the bin quickly rises and is easy to reach the explosion limit concentration, and an explosion is caused when encountering a fire source, this device greatly reduces the flying of metal dust, reduces the explosion risk from the source, avoids equipment damage, damage to production facilities and fires, effectively guarantees the life safety of on-site personnel, and reduces economic losses.

[0019] 2. When a traditional dust removal device starts the fan, the air flow in the bin is extremely unstable, resulting in dust flying. However, this device pre-creates a humid environment through the pre-wetting module. When the fan module starts to suck dust, the air flow state is relatively stable, reducing the dust from rising due to sudden changes in the air flow, laying a good foundation for subsequent efficient dust removal, and improving the stability and reliability of the overall dust removal process.

[0020] 3. By utilizing the differences in density, mass, etc. between metal dust and dust, through the synergistic action of unique structures such as a dust baffle, a water receiving tray, and a guiding arc plate, the efficient separation of metal dust and dust is realized. Different from the simple dust collection method of traditional dust removal devices, this device can make most of the metal dust settle quickly and the dust be effectively adsorbed, significantly improving the dust separation efficiency, which is beneficial to more precisely treating different types of dust subsequently.

[0021] 4. Adopt a three - level mechanism of "guided collision - oblique - projectile interception - wet capture" to efficiently settle metal dust. From using a guiding arc plate to make the metal dust slide and settle along the arc surface, to secondary interception of suspended dust through structures such as baffles, and then to capturing dust by the pre - wet adsorption layer on the inner wall and water surface of the water - collecting cavity, multiple links progress step by step. Compared with the single settlement method of traditional devices, the dust settlement effect is greatly improved, and dust emissions are reduced.

[0022] 5. The installation position of the water pump is far from the polishing wheel, and the slope water tank structure forms a barrier layer. At the same time, combined with the control of the delayed - shutdown program, it effectively reduces the erosion and wear of the water pump by impurities. Different from the traditional device where the key components such as the impeller, pump shaft, and seal of the water pump are quickly damaged due to the erosion of water impurities, and then frequent maintenance and replacement affect production efficiency, this device can greatly improve the durability and service life of the water pump, reduce the maintenance cost of the enterprise, and ensure the smooth progress of the production plan.

[0023] 6. The water body in the water - collecting cavity flows back to the flume through a pipeline, and then flows into the slope water tank through holes, forming a water resource cycle. Different from the possible water resource waste situation of traditional dust removal devices, this device effectively saves water resources, conforms to the concept of environmental protection and sustainable development, reduces the water consumption cost of the enterprise, and at the same time reduces the pressure of sewage discharge treatment. Brief Description of the Drawings

[0024] Figure 1 It is a front - view three - dimensional schematic diagram of the main structure of the present invention; Figure 2 It is a rear - view three - dimensional schematic diagram of the main structure of the present invention; Figure 3 It is a sectional three - dimensional schematic diagram of the main structure of the present invention; Figure 4 It is a sectional three - dimensional schematic diagram of the main structure of the present invention from another angle; Figure 5 For the present invention Figure 4 The enlarged three - dimensional schematic diagram of the structure at A in Figure 6 It is a partial - sectional three - dimensional schematic diagram of the main structure of the present invention; Figure 7 It is a three - dimensional schematic diagram of the water tank group, pre - wet module, and slope water tank of the present invention; Figure 8 It is a three - dimensional schematic diagram of the water - mist separation plate group of the present invention; Figure 9 It is a planar schematic diagram of the dust - removal movement path of the present invention; Figure 10 It is a planar schematic diagram of the settlement of water and metal dust in the present invention.

[0025] In the figure: 11. Machine base; 12. Polishing wheel; 13. Fan module.

[0026] 21. Slope water tank; 22. Water tank group; 221. Flowing water tank; 222. Water collecting cavity; 23. Pre-wetting module; 231. Water pump; 232. Water level sensor; 233. Flow sensor; 24. Baffle; 25. Guide shell; 251. Dust shield; 252. Water receiving tray; 253. Guide arc plate; 26. Water mist separation plate group; 261. Water mist back pressure plate; 262. Arc-shaped water mist separation plate. Specific embodiments

[0027] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0028] It should be noted that the polishing wheel 12 only provides the function of polishing the workpiece, the fan module 13 only provides the negative pressure function to suck dust, and the pre-wetting module 23 only provides the function of pre-wetting the water tank group 22. The working principles and specific structures of the above structures are all prior arts. Therefore, due to the generality of the above structures, the specific principles will not be described in detail hereinafter.

[0029] Please refer to Figures 1 to 10 , the present invention provides an embodiment: a pre-filled self-excited dust removal device, including a machine base 11, polishing wheels 12 are symmetrically installed on the outer surface of the machine base 11, a fan module 13 is installed on the top of the machine base 11, a slope water tank 21 is installed at the bottom of the machine base 11, a water tank group 22 is installed above the slope water tank 21, a pre-wetting module 23 is installed inside the slope water tank 21, the pre-wetting module 23 is interconnected with the slope water tank 21 and the water tank group 22, guide shells 25 are installed on both the upper and lower sides of the polishing wheel 12, and a water mist separation plate group 26 is installed above the water tank group 22; Start the pre-wetting module 23 in advance. Through its connection relationship with the slope water tank 21 and the water tank group 22, the water in the slope water tank 21 is conveyed to the water tank group 22 to perform pre-wetting treatment on the water tank group 22. Subsequently, start the fan module 13 to start the dust suction operation, and stop the pre-wetting module 23 after a delay. This operation aims to effectively inhibit the generation of dry dust by pre-wetting the water tank group 22 and reduce the dust emission during the dust suction process.

[0030] It should be noted that the water tank group 22 includes a flowing water tank 221 and a water collecting chamber 222. The flowing water tank 221 is fixedly installed on one side of the machine base 11 close to the polishing wheel 12, and holes communicating with the inclined water tank 21 are provided on both sides thereof. The water collecting chamber 222 is fixedly installed in the machine base 11 and is located above the pre-wetting module 23. The pre-wetting module 23 includes a water pump 231. The water pump 231 is installed in the middle of the inclined water tank 21 and on the side far from the polishing wheel 12, and is communicated with the water collecting chamber 222 through an external pipeline 1. A bottom of the water collecting chamber 222 is fixedly communicated with an external pipeline 2, and the other side thereof is communicated with the flowing water tank 221. The external pipeline 2 has a certain height to prevent impurities inside the water collecting chamber 222 from flowing into the water pump 231. A bottom of the water pump 231 is provided with an external spray head contacting the bottom of the inclined water tank 21. The pre-wetting module 23 further includes a water level sensor 232 respectively installed inside the flowing water tank 221 and on the convex surface of the inclined water tank 21, and a flow sensor 233 installed in the middle of the external pipeline 2. A baffle 24 is fixedly connected inside the inclined water tank 21. The guiding shell 25 includes a dust-proof cover 251, a water receiving tray 252 and a guiding arc plate 253. The dust-proof cover 251 is fixedly connected to the outer surface of the machine base 11 and above the polishing wheel 12. The water receiving tray 252 is fixedly connected to the outer surface of the machine base 11 and below the polishing wheel 12. The guiding arc plate 253 is fixedly connected to the outer surface of the flowing water tank 221 and is concentrically arranged with the polishing wheel 12. Sharp parts are provided on one side of the guiding arc plate 253 and the baffle 24 close to the polishing wheel 12, and the bottom of the sharp part is disk-shaped. The water mist separation plate group 26 includes: a water mist anti-pressure plate 261 and an arc-shaped water mist separation plate 262. The water mist anti-pressure plate 261 is installed in the machine base 11 and above the water collecting chamber 222. The arc-shaped water mist separation plate 262 is installed in the machine base 11 and above the water mist anti-pressure plate 261. The water mist anti-pressure plate 261 is composed of several anti-pressure plates, and the anti-pressure plates on the left and right sides thereof are inclined towards the middle. The whole arc-shaped water mist separation plate 262 is inclined downward on both sides. The arc-shaped water mist separation plate 262 is composed of several arc-shaped separation plates. The arc-shaped opening of each arc-shaped separation plate faces upward. At the same time, in adjacent two layers, the arc-shaped separation plates in the lower layer are respectively located on both sides below the arc-shaped separation plates in the upper layer. Both sides of the machine base 11 are of detachable design. At the same time, guide rails are symmetrically installed in the inner wall of the machine base 11. The water mist anti-pressure plate 261 and the arc-shaped water mist separation plate 262 are both slidably connected to the guide rails. By adopting the above scheme, the water mist anti-pressure plate 261 and the arc-shaped water mist separation plate 262 can be regularly cleaned. An explosion-proof control center is installed on the front of the machine base 11. At the same time, the detachable design of the machine base 11 makes it convenient to replace when pipelines and other structures such as the external pipeline 1 and the external pipeline 2 are blocked.

[0031] Specifically, before the device is started, water is first injected into the slope water tank 21. Subsequently, the water pump 231 is turned on. The water pump 231 sucks water from the slope water tank 21 through the external nozzles at the bottom and transports the water in the slope water tank 21 to the water collection cavity 222 through the first external pipeline. The water in the water collection cavity 222 is then transported to the water flow groove 221 through the second external pipeline to fully pre-wet the water tank group 22. At this time, the water level sensor 232 monitors the water levels in the water flow groove 221 and the slope water tank 21 in real time, and the flow sensor 233 monitors the water flow rate of the second external pipeline to ensure stable water flow and appropriate water volume, maintaining the wet state of the water tank group 22.

[0032] After the pre-wetting of the water tank group 22 is completed, the device is started, and the polishing wheel 12 starts to rotate at high speed to grind the workpiece. During the grinding process, a large amount of dust is generated by the friction between the polishing wheel 12 and the workpiece. At this time, the fan module 13 is started synchronously, generating a strong suction force to suck in the metal dust, and the start of the fan module 13 causes the pre-wetting module 23 to close with a delay.

[0033] Among them, the preliminary separation of metal dust: After the fan module 13 is started, the negative pressure air flow generated by it quickly covers the working area of the polishing wheel 12. At this time, the metal dust peeled off by the high-speed friction between the polishing wheel 12 and the workpiece surface, as well as the non-metal dust attached to the workpiece surface or polishing consumables such as sandpaper and abrasive, start to move under the combined action of the air flow and inertia force.

[0034] Metal dust has a higher density and greater mass, and thus has stronger inertia; while dust is mostly non-metal oxides, debris of polishing consumables, etc., with a low density and small particle size, and is more easily dominated by the air flow.

[0035] The dust guard 251 above the polishing wheel 12 and the water receiving tray 252 below first intercept the dust preliminarily. The dust guard 251 forms an air flow barrier through the arc-shaped surface, forcing the rising dust to change direction. Most of the dust falls back after the kinetic energy decays due to hitting the wall of the cover; the water receiving tray 252 catches the larger particles that fall due to gravity, preventing the dust from directly polluting the ground. Under the coordinated action of the two-stage structure, the dust-containing air flow is guided to the side close to the pre-wetting module 23.

[0036] When the dust-containing air flow passes over the guiding arc plate 253, its arc-shaped design concentric with the polishing wheel 12 causes a centrifugal effect. The metal dust with a larger mass is difficult to follow the air flow along the tangent direction of the arc surface due to the inertial force being greater than the air flow drag force, but instead impacts the plate surface along the normal direction of the arc plate. Subsequently, under the combined action of gravity and the arc surface of the plate, the metal dust slides down along the arc plate to the slope water tank 21, achieving the first sedimentation.

[0037] In contrast, the lighter dust shows more significant followability in the air flow. When the air flow turns through the guiding arc plate 253, the dust is more likely to conform to the air flow trajectory and continue to rise, entering the area of the water chute 221. Due to the van der Waals force and surface adsorption effect generated by the pre-wetted sticky wall surface of the water chute 221, the dust is adsorbed on the chute wall, further reducing the risk of secondary dust emission. At this stage, through mass difference and structural guidance, efficient separation of metal dust and dust is achieved.

[0038] It should be noted that sharp parts are provided on the sides of the guiding arc plate 253 and the baffle 24 close to the polishing wheel 12, and the bottom of the sharp part is disk-shaped. This structure is significantly different from the traditional smooth guiding plate: most traditional guiding structures adopt arc-shaped or straight plate designs. When the air flow slides along the plate surface, laminar flow is easily formed, resulting in some dust escaping with the air flow; while the sharp parts of this device can tear the air flow into turbulent flow through high-frequency disturbance when the dust-containing air flow passes by, effectively reducing the wind resistance. At the same time, the dust particles deviate from their original movement trajectories, and it forces the metal dust and dust to be more likely to collide and separate from the surrounding structures. The disk structure at its bottom further strengthens the separation effect. When the metal dust impacts the disk surface, the normal collision force and tangential friction force provided by the disk prompt the dust to decelerate rapidly and change direction. Compared with the traditional smooth curved surface, the disk structure improves the dust collision efficiency. The un-settled fine particles also come into contact with the surrounding wet surfaces again due to the secondary eddy current generated by the disk-induced turbulence, thus achieving multi-stage separation. This composite structure not only reduces the energy consumption of the air flow but also significantly improves the thoroughness of the separation of metal dust and dust through mechanical disturbance and collision mechanisms.

[0039] Among them, the preliminary settlement of metal dust: Under the negative pressure traction of the fan module 13, most of the metal dust directly falls into the slope water tank 21 through the gap between the water receiving tray 252 and the guiding arc plate 253, and quickly settles to the bottom of the slope water tank 21 due to the density difference after entering the water.

[0040] However, there is still some dust carried by the high-speed air flow that slides along the arc surface of the guiding arc plate 253 by inertia and enters the water chute 221. Its movement trajectory changes due to the water film pre-wetted on the arc plate - when the dust contacts the wet wall surface, it is adsorbed and fixed under the action of the van der Waals force and surface tension, effectively suppressing secondary dust emission.

[0041] The suspended dust remaining above the inclined water tank 21 faces double interception: First, the sharp part of the guiding arc plate 253 cuts the air flow at high frequency, forming a turbulent eddy field, forcing the dust to deviate from its original trajectory and collide obliquely with the water surface of the water tank. Due to the high elastic modulus of the metal dust, an upward rebounding force is generated when it hits the water surface, so it is obliquely thrown upward at an elevation angle. At this time, the sharp part of the baffle 24 and the disc structure form a second line of defense: the sharp part disturbs the upward air flow of the rebounding dust, and the disc converts the kinetic energy of the obliquely thrown dust into sliding friction energy along the disc surface by increasing the collision contact area and friction coefficient. Finally, under the combined action of the normal force of the disc and gravity, the dust is forced to vertically rise and enter the water collection cavity 222.

[0042] The pre-wetted adsorption layer on the inner wall and water surface of the water collection cavity 222 plays a key role: when the dust touches the wet wall surface, the water film quickly captures it through capillary action and hydrogen bond force; if it touches the water surface, a downward dragging force is generated due to the concave liquid surface formed by surface tension, prompting the dust to accelerate sedimentation. Through this three-level mechanism of "guided collision - oblique throw interception - wet capture", efficient sedimentation is achieved. At this time, the captured metal dust will stay inside the water collection cavity 222, while the un-captured metal dust and water will continue to be pulled upward by the fan module 13.

[0043] It should be noted that the water pump 231 is installed in the middle of the inclined water tank 21 and away from the polishing wheel 12, which extends the movement path of the metal dust from the polishing area to the water pump 231. During this process, most of the metal dust has settled, effectively reducing the erosion and wear of the impurities on the water pump 231; secondly, the inverted concave structure of the inclined water tank 21 and the middle installation layout of the water pump 231 naturally form two-sided barrier layers. The higher side walls and the bottom slope of the inclined water tank 21 can intercept larger particle impurities and prevent them from directly flowing to the water inlet of the water pump 231; and the water pump 231 has been controlled by a program to close with a time delay, further reducing the probability of impurities entering the water pump 231 under the lack of power, thereby improving the durability and service life of the water pump 231.

[0044] Among them, the separation of metal dust: At this time, under the suction traction of the fan module 13, the dust-containing water mist mixture accelerates upward in the vertical direction until it encounters the water mist anti-pressure plate 261. The water mist anti-pressure plate 261 is composed of several anti-pressure plates inclined towards the middle, and its unique V-shaped array structure forms a multi-level "anti-pressure barrier": when the air flow hits the inclined plate surface, under the action of the normal force of the plate surface, the dust-containing air flow is forced to be diverted along the inclined surface and decelerated, and at the same time, a horizontal lateral component force is generated, forcing the air flow to rise in an "S" shape.

[0045] During this process, due to their relatively large inertia, the metal dust particles are difficult to turn with the airflow. Under the combined action of the collision force and gravity on the plate surface, they break away from the airflow and settle on the surface of the water mist anti-pressure plate 261. The entrained water mist forms a water film under the action of the friction on the plate surface and the airflow shear force, adsorbs the residual dust particles, and then slides down along the inclined surface into the water collection cavity 222.

[0046] The airflow preliminarily separated by the water mist anti-pressure plate 261 continues to rise with a small amount of fine dust and water mist to the arc-shaped water mist separation plate 262.

[0047] Since the arc-shaped water mist separation plate 262 is composed of multiple layers of arc-shaped plates arranged in a staggered manner with openings facing upward, when the dust-containing airflow enters the arc-shaped channel, the centrifugal force and the spiral motion characteristics of the airflow are fully utilized: as the airflow rotates and rises along the inner wall of the arc, the water mist is thrown towards the arc-shaped plate wall by the centrifugal force due to its density being greater than that of the gas, forming a continuous water film; the metal dust particles impact the water film and are captured under the action of inertia and centrifugal force. The separated sludge, such as the mixture of dust and water, slides along both sides of the plate surface under the action of the gravity component on the inclined surface of the arc-shaped plate and converges to the edge of the water collection cavity 222, facilitating centralized cleaning through the detachable side plate of the machine base 11. The airflow then continues to move through the arc-shaped water mist separation plate 262 and is discharged from the machine base 11 by the fan module 13.

[0048] The remaining water droplets not intercepted by the arc-shaped plate drip onto the surface of the lower water mist anti-pressure plate 261. Under the action of the inclined angle of the plate surface and the surface tension, the water droplets accelerate and converge along the V-shaped channel, and finally fall back into the water collection cavity 222 through the notch at the bottom of the water mist anti-pressure plate 261.

[0049] Part of the water in the water collection cavity 222 flows back to the water flow tank 221 through the external pipeline two at the bottom. The water flowing back to the water flow tank 221 re-enters the slope water tank 21 through the holes on both sides, thus realizing the economical use of water resources.

[0050] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the existence of additional identical elements in the process, method, article or device comprising the element.

[0051] Although embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pre-filled self-excited dust removal device, comprising a machine base (11), polishing wheels (12) are symmetrically installed on the outer surface of the machine base (11), and a fan module (13) is installed on the top of the machine base (11), characterized in that: A ramp water tank (21) is installed at the bottom of the machine base (11). A water tank group (22) is installed above the ramp water tank (21). A pre-wetting module (23) is installed inside the ramp water tank (21). The pre-wetting module (23) is interconnected with the ramp water tank (21) and the water tank group (22). Guide shells (25) are installed on both the upper and lower sides of the polishing wheel (12). A water mist separation plate group (26) is installed above the water tank group (22). Pre-start the pre-wetting module (23). Through its connection with the ramp water tank (21) and the water tank group (22), the water in the ramp water tank (21) is conveyed to the water tank group (22) to pre-wet the water tank group (22). Subsequently, start the fan module (13) to start the dust suction operation, and stop the pre-wetting module (23) with a time delay. This operation aims to effectively inhibit the generation of dry dust and reduce the dust emission during the dust suction process by pre-wetting the water tank group (22).

2. The pre-filled self-excited dust removal device according to claim 1, characterized in that: The water tank group (22) includes a flowing water tank (221) and a water collecting cavity (222). The flowing water tank (221) is fixedly installed on one side of the machine base (11) close to the polishing wheel (12), and holes communicating with the ramp water tank (21) are provided on both sides thereof. The water collecting cavity (222) is fixedly installed inside the machine base (11) and is located above the pre-wetting module (23).

3. The pre-filled self-excited dust removal device according to claim 2, characterized in that: The pre-wetting module (23) includes a water pump (231). The water pump (231) is installed in the middle of the ramp water tank (21) and on the side far from the polishing wheel (12), and is connected to the water collecting cavity (222) through an external pipeline one. The bottom of the water collecting cavity (222) is fixedly connected to an external pipeline two, and the other side thereof is connected to the flowing water tank (221). An external spray head in contact with the bottom of the ramp water tank (21) is installed at the bottom of the water pump (231).

4. A pre-filled self-excited dust removal device according to claim 1, characterized in that: The pre-wetting module (23) further includes a water level sensor (232) installed inside the flowing water tank (221) and on the convex surface of the ramp water tank (21), and a flow sensor (233) installed in the middle of the external pipeline two.

5. A pre-filled self-excited dust removal device according to claim 1, characterized in that: A baffle (24) is fixedly connected inside the ramp water tank (21).

6. The pre-filled self-excited dust removal device according to claim 1, wherein: The guide shell (25) includes a dust baffle cover (251), a water receiving tray (252), and a guide arc plate (253). The dust baffle cover (251) is fixedly connected to the outer surface of the machine base (11) and above the polishing wheel (12). The water receiving tray (252) is fixedly connected to the outer surface of the machine base (11) and below the polishing wheel (12). The guide arc plate (253) is fixedly connected to the outer surface of the flowing water tank (221) and is concentric with the polishing wheel (12).

7. A pre-filled self-excited dust removal device according to claim 6, characterized in that: Sharp parts are provided on the sides of the guide arc plate (253) and the baffle (24) close to the polishing wheel (12), and the bottom of the sharp part is disc-shaped.

8. The pre-filled self-excited dust removal device according to claim 1, wherein: The water mist separation plate group (26) includes a water mist counter-pressure plate (261) and an arc-shaped water mist separation plate (262). The water mist counter-pressure plate (261) is installed inside the machine base (11) and above the water collecting cavity (222). The arc-shaped water mist separation plate (262) is installed inside the machine base (11) and above the water mist counter-pressure plate (261).

9. The pre-filled self-excited dust removal device according to claim 8, characterized in that: The water mist anti-pressure plate (261) is composed of a number of anti-pressure plates, and the anti-pressure plates on both the left and right sides thereof are inclined towards the middle.

10. The pre-filled self-excited dust removal device according to claim 8, characterized in that: Both sides of the overall arc-shaped water mist separation plate (262) are inclined downward. The arc-shaped water mist separation plate (262) is composed of a number of arc-shaped separation plates. The arc-shaped openings of each arc-shaped separation plate face upward. At the same time, in adjacent two layers, the arc-shaped separation plates in the lower layer are respectively located on both sides below the arc-shaped separation plates in the upper layer.

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