Municipal road brick cutting dustproof device

Abstract

The invention relates to the technical field of municipal equipment, in particular to a municipal road brick cutting dustproof device which comprises a machining table and a dustproof unit. The dustproof unit comprises a shell vertically arranged on one side of the machining table, the shell is of a cylindrical structure, a communicating pipe is arranged between the shell and the machining table, the two ends of the communicating pipe communicate with the upper end of the shell and the upper end of the machining table correspondingly, and a filter screen is arranged in the shell and divides the shell into a dust removal cavity and a discharging cavity in the vertical direction. A communicating pipe connected with the shell penetrates through the filter screen in the vertical direction and extends to the position below the filter screen, a plurality of flow dividing pipes are evenly arranged at the end, located in the dust removal cavity, of the communicating pipe around the axis of the shell, the flow dividing pipes communicate with the communicating pipe, an air outlet head is arranged at the end of each flow dividing pipe, and the air outlet end of each air outlet head is vertically upward. And water is injected into the shell. The operation time of the dustproof unit is prolonged, and the maintenance frequency is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of municipal equipment, in particular to a municipal road brick cutting dust prevention device. Background Art

[0002] When laying sidewalk bricks, due to the needs of laying, the bricks need to be cut to remove unnecessary corners. During the cutting process, a large amount of waste and dust will be generated. Since the construction workers need to cut close to the ground, they will inhale a large amount of dust, and the dust is easy to spread, affecting pedestrians and nearby residents. At present, to prevent the inhalation of dust, construction workers often wear dust masks, but dust still easily enters areas that are not covered by the masks, causing environmental pollution.

[0003] Chinese patent announcement number CN108465336B discloses a dust prevention device for cutting municipal road bricks, including a box body, a support mechanism is provided at the lower end of the box body, the support mechanism includes legs located at the four corners of the lower end of the base, a sliding sleeve at the lower end of the leg is provided with a support sleeve, a buffer spring is provided in the support sleeve, and the buffer spring connects and fixes the support sleeve and the leg, a lifting column is provided at the bottom of the box body, the lifting column is a jack column with adjustable height, an operating table is provided at the output end of the lifting column, a dust hood is provided at the top of the box body, and a suction hood is provided at the upper end The air inlet and the upper end of the air intake port are connected to the dust removal box located on the left side of the box body through an exhaust pipe. A water collecting bucket is provided at the water outlet end of the bottom of the dust removal box, and the lower end of the water collecting bucket is connected to the water inlet end of the water storage tank. The air intake port on the upper left side of the water storage tank is connected to a negative pressure pump, and a conical filter screen is provided at the bottom of the dust removal box where the upper end of the water collecting bucket is located, and filtering gaps are evenly distributed on the surface of the conical filter screen. A water spray ring is provided above the conical filter screen, and a plurality of water spray holes are distributed in an array on the lower surface of the water spray ring. The water inlet end of the water spray ring is connected to the circulating liquid pump located inside the water storage tank through a water supply pipe.

[0004] Although the above scheme can absorb the dust generated by cutting when cutting road bricks, when filtering the dust, cleaning the conical filter by simply spraying water will cause the dust to clump on the conical filter, and there is no exhaust unit at the bottom of the conical filter, so the dust cannot be effectively filtered by the conical filter. In addition, since the water tank lacks a sedimentation unit, when the water supply pipe draws water from the water tank, a large number of small dust particles will be suspended in the water, which will cause the water spray hole to be blocked, and then the conical filter will be further blocked. Moreover, since the airflow of the exhaust pipe is constantly blowing towards the conical filter, the filtered dust will be lifted up again by the airflow, and the overall dust removal effect is poor. Summary of the invention

[0005] In view of the above problems, a municipal road brick cutting dust prevention device is provided. A connecting pipe through which a filter screen is passed is arranged in a shell, and a diversion pipe is arranged at the end of the connecting pipe to divert the air discharged into the shell from the circulation pipe, so that the air entering the shell can be more evenly distributed in the water. When the air entering the shell passes through the filter screen from bottom to top, part of the dust can be intercepted in advance by the water, thereby reducing the interception pressure of the filter screen, extending the operation time of the dust prevention unit, and reducing the maintenance frequency.

[0006] In order to solve the problems of the prior art, the present invention provides a municipal road brick cutting dust prevention device, comprising a processing table and a dust prevention unit arranged on one side of the processing table; the dust prevention unit comprises a shell vertically arranged on one side of the processing table, the shell is a cylindrical structure, a connecting pipe is arranged between the shell and the processing table, the two ends of the connecting pipe are respectively connected with the upper end of the shell and the upper end of the processing table, a filter screen is arranged in the shell, the filter screen divides the shell into a dust removal chamber and a discharge chamber in the vertical direction, and the connecting pipe connected to the shell passes through the filter screen in the vertical direction and extends to the bottom of the filter screen. A plurality of branch pipes are evenly arranged at the end of the connecting pipe located in the dust removal chamber around the axis of the shell, the branch pipes are connected to the connecting pipe, and the extending direction of the branch pipes is parallel to the radial direction of the shell, and an air outlet head is arranged at the end of each branch pipe, and the air outlet end of the air outlet head is vertically upward, the shell is filled with water, the liquid level in the shell is higher than the air outlet end of the air outlet head and lower than the filter screen, and an air outlet is opened at the top of the shell, and the air at the processing table is discharged into the dust removal chamber through the connecting pipe, the branch pipe and the air outlet head, and then the air passes through the filter screen in the vertical direction and is discharged from the air outlet.

[0007] Preferably, the filter screen is a rotating body structure, and the size of the upper end of the filter screen is larger than the size of the lower end of the filter screen.

[0008] Preferably, the connecting pipe is a split structure, divided into two sections, one section is arranged in the outer shell along the vertical direction, and the other section connects the connecting pipe located in the outer shell with the processing table. The two sections of the connecting pipe rotate in coordination, and a driving unit for driving the connecting pipe to rotate is arranged on the upper part of the connecting pipe vertically arranged in the outer shell. The driving unit includes a first gear ring fixedly sleeved on the periphery of the connecting pipe, a first gear meshing with the first gear ring is arranged on one side of the first gear ring, and a rotating driver for driving the first gear to rotate is arranged on the upper end of the first gear.

[0009] Preferably, the air outlet head is rotatably coordinated with the diverter pipe, and a rotating unit for driving the air outlet head to rotate is provided on the air outlet head. The air outlet head has an air outlet mode and a self-cleaning mode. In the air outlet mode, the air outlet end of the air outlet head faces vertically upward, and in the self-cleaning mode, the air outlet end of the air outlet head faces vertically downward.

[0010] Preferably, the rotating unit includes a rotating shaft fixedly arranged in a vertical direction on the inner end of the connecting tube located at the outer shell, the axis of the rotating shaft is colinear with the axis of the outer shell, a second gear ring is sleeved on the rotating shaft, the second gear ring is interference fit with the rotating shaft, and under the action of external force, the second gear ring rotates with the rotating shaft, a bevel gear ring is fixedly sleeved on the air outlet head, a bevel gear is meshed on one side of the bevel gear ring, a second gear is fixedly arranged on the end of the bevel gear, and the second gear and the second gear ring are meshed with each other.

[0011] Preferably, a clutch ring is fixedly provided at the lower end of the second gear ring, the axis of the clutch ring is colinear with the axis of the second gear ring, a friction plate is movable along the radial direction of the outer shell on one side of the clutch ring, an extension rod is fixedly provided along the moving direction of the friction plate on the end of the friction plate away from the clutch ring, an electric push rod is horizontally provided on the side wall of the outer shell, the end of the electric push rod passes through the side wall of the outer shell and is fixedly connected to the end of the extension rod.

[0012] Preferably, a partition plate is provided at the lower part of the rotating shaft, and the partition plate is fixedly arranged in the outer shell. The partition plate divides the dust removal chamber into a first cavity and a second cavity along the vertical direction. A plurality of partition holes are opened on the partition plate, and the upper opening of the partition hole is larger than the lower opening. A scraper is fixedly arranged on the side wall of the rotating shaft, and the scraper is slidably matched with the upper end surface of the partition plate.

[0013] Preferably, a cleaning unit for cleaning the filter is provided on the outer shell, and the cleaning unit includes a water supply shell fixedly provided on the outer shell, the water supply shell is an annular structure, the water supply shell is located on the upper part of the filter, an annular plate is rotatably provided on the inner ring side wall of the water supply shell, the axis of the annular plate is colinear with the axis of the water supply shell, a water sprayer is fixedly provided on the side wall of the connecting pipe located in the outer shell, the water sprayer is located on the upper side of the filter, an end of the water sprayer away from the connecting pipe is provided on the annular plate, and the water supply shell supplies water to the water sprayer.

[0014] Preferably, a water tank is provided on one side of the outer shell, the water tank is connected to the second cavity, the connection point between the water tank and the second cavity is located at the upper layer of the second cavity, a filter plate is provided at the connection point between the water tank and the second cavity, a circulation pipe is connected between the water tank and the water supply shell, and a water pump is provided on the circulation pipe.

[0015] Preferably, the bottom of the shell is an inverted cone structure, and a switch valve is arranged at the lower part of the inverted cone structure.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The present invention provides a connecting pipe through which a filter screen is passed in the housing, and a diverter pipe is provided at the end of the connecting pipe to divert the air discharged from the circulation pipe into the housing, so that the air entering the housing can be more evenly distributed in the housing. In the process of air discharge, the air carries dust into the water in the housing. Since the air is diverted by the diverter pipe, compared with directly injecting the air into the housing through a single connecting pipe, the air diverted by the diverter pipe has a larger contact area with the water in the housing, and each air outlet is evenly distributed in the housing, so that the air discharged into the housing can fully contact the water in the housing. In this way, part of the dust has been intercepted by the water in the outer shell before reaching the filter. At the same time, since the horizontal cross-sectional area of ​​the connecting pipe is much smaller than the horizontal cross-sectional area of ​​the outer shell, the flow rate of the diverted air will drop rapidly when entering the outer shell. In this way, part of the dust that rises above the liquid surface with the air will gradually settle back into the water under the action of its own gravity. Only a small amount of dust will move to the lower part of the filter with the air. Compared with allowing the dust-carrying air to pass through the filter from top to bottom, the interception pressure of the filter is smaller, which extends the operation time of the dust prevention unit and reduces the maintenance frequency.

[0018] 2. By setting a rotating unit on the air outlet head, the air outlet head can be switched between the air outlet mode and the self-cleaning mode, which prevents the dust attached to the inner wall of the shunt pipe from affecting the flow of the shunt pipe due to long-term use. In the two modes, the air outlet ends of the air outlet heads corresponding to different modes face completely opposite directions, which can prevent the dust deposited at the bottom of the shell from being stirred up again by the gas discharged from the air outlet head when in the air outlet mode. In the cleaning mode, the softened dust in the shunt pipe can be discharged smoothly.

[0019] 3. By arranging a water sprayer on the upper part of the filter that rotates synchronously with the connecting pipe, the filter can be cleaned in real time while filtering the dust, ensuring that the filter can still maintain a stable dust removal effect after long-term use. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional schematic diagram of a municipal road brick cutting dust prevention device of the present invention.

[0021] Figure 2 It is a side view of a municipal road brick cutting dust prevention device of the present invention with the processing table removed.

[0022] Figure 3 The invention relates to a municipal road brick cutting dust prevention device. Figure 2 Schematic cross-sectional view at AA in the middle.

[0023] Figure 4 The invention discloses a cutaway stereoscopic schematic diagram of a municipal road brick cutting dust prevention device.

[0024] Figure 5 The invention relates to a municipal road brick cutting dust prevention device. Figure 4 A local enlarged schematic diagram of point B in the middle.

[0025] Figure 6 The invention relates to a municipal road brick cutting dust prevention device. Figure 4 A partial enlarged schematic diagram of point C in the middle.

[0026] Figure 7 The invention relates to a municipal road brick cutting dust prevention device. Figure 4 A partial enlarged schematic diagram of point D in the middle.

[0027] Figure 8 The invention relates to a municipal road brick cutting dust prevention device. Figure 4 A partial enlarged schematic diagram of point E in the middle.

[0028] Fig. 9 It is a three-dimensional schematic diagram of a municipal road brick cutting dust prevention device of the present invention with a processing table and a shell removed.

[0029] Fig.10 The utility model is a three-dimensional schematic diagram of a municipal road brick cutting dust prevention device after removing the outer shell, the connecting pipe and the processing table.

[0030] Fig.11 The invention relates to a municipal road brick cutting dust prevention device. Fig.10 A partial enlarged schematic diagram of point F in the middle.

[0031] The numbers in the figure are:

[0032] 1. Processing table; 2. Dust-proof unit; 21. Housing; 211. Air outlet; 212. Switch valve; 22. Connecting pipe; 221. Fan; 23. Diverter pipe; 231. Air outlet head; 24. Filter; 25. Drive unit; 251. First gear ring; 252. First gear; 253. Rotary drive; 26. Rotating unit; 261. Bevel gear ring; 262. Bevel gear; 263. Second gear; 264. Second gear ring; 265. Rotating shaft; 266. Clutch ring; 267. Friction plate; 268. Extension rod; 269. Electric push rod; 27. Partition plate; 271. Partition hole; 272. Scraper; 28. Cleaning unit; 281. Water supply shell; 282. Ring plate; 283. Sprinkler; 284. Circulation pipe; 285. Water pump; 286. Water tank; 287. Filter plate. DETAILED DESCRIPTION

[0033] In order to further understand the features, technical means, specific objectives and functions of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0034] Reference Figure 1-Figure 7 : A municipal road brick cutting dust prevention device, comprising a processing table 1 and a dust prevention unit 2 arranged on one side of the processing table 1; the dust prevention unit 2 comprises a shell 21 vertically arranged on one side of the processing table 1, the shell 21 is a cylindrical structure, a connecting pipe 22 is arranged between the shell 21 and the processing table 1, the two ends of the connecting pipe 22 are respectively connected with the upper end of the shell 21 and the upper end of the processing table 1, a filter screen 24 is arranged in the shell 21, the filter screen 24 divides the shell 21 into a dust removal chamber and a discharge chamber in the vertical direction, the connecting pipe 22 connected to the shell 21 passes through the filter screen 24 in the vertical direction and extends to the bottom of the filter screen 24, and the connecting pipe 22 located in the dust removal chamber A plurality of shunt pipes 23 are evenly arranged around the axis of the shell 21 at the end thereof. The shunt pipes 23 are connected with the connecting pipe 22, and the extending direction of the shunt pipes 23 is parallel to the radial direction of the shell 21. An air outlet head 231 is arranged at the end of each shunt pipe 23, and the air outlet end of the air outlet head 231 is vertically upward. Water is filled in the shell 21, and the liquid level in the shell 21 is higher than the air outlet end of the air outlet head 231 and lower than the filter 24. An air outlet 211 is opened at the top of the shell 21. After the air at the processing table 1 is discharged into the dust removal chamber through the connecting pipe 22, the shunt pipe 23 and the air outlet head 231, the air passes through the filter 24 in the vertical direction and is discharged from the air outlet 211.

[0035] In the existing municipal road brick cutting operations, there are generally two forms, one is a simple type, that is, the staff directly uses a handheld cutting machine to cut the road bricks; the other is a workbench type, which requires the floor tiles to be placed on a processing table 1 to complete the processing. Regardless of the cutting method, a large amount of dust will be generated, and the present invention mainly optimizes and improves the second cutting method. When the processing table 1 is used to cut road bricks, a dustproof unit 2 is equipped on one side of the processing table 1. The principle is basically the same, that is, the dust-containing air at the processing table 1 is sucked away in time by the dustproof unit 2, but the existing dustproof unit 2 cannot reasonably dispose of the dust after sucking out the dust, and the continuously accumulated dust will gradually block the dustproof unit 2, resulting in the dust suction efficiency of the dustproof unit 2 becoming worse and worse as the use time increases.

[0036] In order to avoid the above situation, the dustproof unit 2 is further improved to extend the working time of the dustproof unit 2. The structure and working process of the dustproof unit 2 are as follows:

[0037] A fan 221 is provided on the connecting pipe 22 , and the fan 221 is used to draw air at the processing table 1 into the connecting pipe 22 and discharge the air into the housing 21 through the guidance of the connecting pipe 22 .

[0038] When cutting the road bricks, the floor bricks need to be placed on the processing table 1 for cutting. At the same time, the fan 221 provided on the connecting pipe 22 is started. The fan 221 extracts the air in the processing table 1. The connecting pipe 22 discharges the air at the processing table 1 into the dust removal chamber. The multiple shunt pipes 23 provided at the end of the connecting pipe 22 in the dust removal chamber shunt the air carrying dust, and then discharge it through the air outlet 231 at the end of each shunt pipe 23. In the process of air discharge, the air carries the dust into the water in the housing 21. Since the air is shunted by the shunt pipe 23, compared with directly injecting the air into the housing 21 through a single connecting pipe 22, the air shunted by the shunt pipe 23 has a larger contact area with the water in the housing 21. Moreover, each air outlet 231 is evenly distributed in the housing 21, so that the air discharged into the housing 21 can fully contact the water in the housing 21. In this way, part of the dust has been intercepted by the water in the outer shell 21 before reaching the filter 24. At the same time, since the horizontal cross-sectional area of ​​the connecting pipe 22 is much smaller than the horizontal cross-sectional area of ​​the outer shell 21, the flow rate of the diverted air will drop rapidly when entering the outer shell 21. In this way, part of the dust that rises above the liquid surface with the air will gradually settle in the water under the action of its own gravity. Only a small amount of dust will move to the lower part of the filter 24 with the air. Under the interception of the filter 24, the air passes through the filter 24 and enters the discharge chamber, and is finally discharged from the air outlet 211. Compared with allowing the air carrying dust to pass through the filter 24 from top to bottom, the interception pressure of the filter 24 is smaller, which extends the operation time of the dustproof unit 2 and reduces the maintenance frequency.

[0039] It is worth noting that the air outlet end of the air outlet head 231 should not be set too small, otherwise it will be easily blocked by dust. The specific size of the air outlet head 231 needs to be determined according to actual conditions.

[0040] Reference Figure 1-Figure 11 : The filter screen 24 is a rotating body structure, and the upper end size of the filter screen 24 is larger than the lower end size of the filter screen 24.

[0041] When the rising air carrying some dust passes through the filter 24, the dust will not directly hit the filter 24, but will be gradually intercepted under the guidance of the inclined structure at the bottom of the filter 24. Compared with the filter 24 with a planar structure, the filter 24 with a rotating body structure used in the present invention has a lower probability of being attached by stubborn dust, thereby further extending the service life of the filter 24.

[0042] Reference Figure 3-Figure 5The connecting pipe 22 is a split structure, which is divided into two sections, one of which is arranged in the outer shell 21 along the vertical direction, and the other section connects the connecting pipe 22 located in the outer shell 21 with the processing table 1. The two sections of the connecting pipe 22 are rotatably matched, and a driving unit 25 for driving the connecting pipe 22 to rotate is arranged on the upper part of the connecting pipe 22 vertically arranged in the outer shell 21. The driving unit 25 includes a first gear ring 251 fixedly sleeved on the outer periphery of the connecting pipe 22, and a first gear 252 meshing with the first gear ring 251 is arranged on one side of the first gear ring 251, and a rotating driver 253 for driving the first gear 252 to rotate is arranged on the upper end of the first gear 252.

[0043] The rotary driver 253 is preferably a servo motor. When the rotary driver 253 is started, the rotary driver 253 drives the gear ring to rotate through the first gear 252, and the gear ring drives the connecting pipe 22 disposed in the housing 21 to rotate. The rotating connecting pipe 22 drives the shunt pipe 23 to rotate, so that the air discharged into the housing 21 can be more evenly distributed in the water in the housing 21. It is worth noting that the rotation speed should not be too fast, preferably 20 revolutions / minute, so as to avoid the shunt pipe 23 stirring the water in the housing 21 during rotation, so that the dust intercepted by the water cannot be normally precipitated.

[0044] Reference Figure 3 : The air outlet head 231 is rotatably matched with the diverter pipe 23, and a rotating unit 26 for driving the air outlet head 231 to rotate is provided on the air outlet head 231. The air outlet head 231 has an air outlet mode and a self-cleaning mode. In the air outlet mode, the air outlet end of the air outlet head 231 is vertically facing upwards, and in the self-cleaning mode, the air outlet end of the air outlet head 231 is vertically facing downwards.

[0045] Reference Fig.11 The rotating unit 26 includes a rotating shaft 265 fixedly arranged along the vertical direction on the inner end of the connecting pipe 22 located at the outer shell 21, the axis of the rotating shaft 265 is colinear with the axis of the outer shell 21, and a second gear ring 264 is sleeved on the rotating shaft 265, and the second gear ring 264 and the rotating shaft 265 are interference fit. Under the action of external force, the second gear ring 264 and the rotating shaft 265 rotate in cooperation, and a bevel gear ring 261 is fixedly sleeved on the air outlet head 231, and a bevel gear 262 is meshed on one side of the bevel gear ring 261, and a second gear 263 is fixedly arranged on the end of the bevel gear 262, and the second gear 263 and the second gear ring 264 are meshed with each other.

[0046] Reference Fig.10 and Fig.11: A clutch ring 266 is fixedly installed at the lower end of the second gear ring 264, and the axis of the clutch ring 266 is colinear with the axis of the second gear ring 264. A friction plate 267 is movable along the radial direction of the outer shell 21 on one side of the clutch ring 266, and an extension rod 268 is fixedly installed on the end of the friction plate 267 away from the clutch ring 266 along the moving direction of the friction plate 267. An electric push rod 269 is horizontally installed on the side wall of the outer shell 21, and the end of the electric push rod 269 passes through the side wall of the outer shell 21 and is fixedly connected to the end of the extension rod 268.

[0047] When the gas outlet head 231 is in the gas outlet mode, the gas outlet end of the gas outlet head 231 is vertically upward, so that the gas discharged through the gas outlet head 231 can avoid stirring up the dust settled in the lower part of the shell 21. However, after the gas outlet end of the gas outlet head 231 is used for a period of time in the vertically upward state, some dust will be gathered at the bend of the shunt tube 23, and the inner wall of the shunt tube 23 will also be covered with dust, so it is necessary to self-clean the shunt tube 23 when it is not in use. When the gas outlet head 231 is in the gas outlet mode, the friction plate 267 and the clutch ring 266 are in a non-contact state. Since the second gear ring 264 and the rotating shaft 265 are in interference fit, when the driving unit 25 drives the connecting tube 22 to rotate, the second gear ring 264 rotates synchronously with the rotating shaft 265, and the second gear ring 264 and the rotating ring are relatively stationary. When the air outlet head 231 completes its work, the electric push rod 269 starts, and the electric push rod 269 drives the extension rod 268 to extend, so that the friction plate 267 fits the periphery of the clutch ring 266, and then the driving unit 25 drives the connecting pipe 22 to rotate. At this time, due to the friction effect of the friction plate 267 on the clutch ring 266, the second gear ring 264 begins to rotate relative to the rotating shaft 265, and the second gear ring 264 drives the second gear 263 to rotate, and then the bevel gear 262 drives the bevel gear ring 261 to rotate, so that the air outlet head 231 rotates. When the air outlet head 231 rotates 180 degrees, that is, the air outlet end of the air outlet head 231 rotates from vertically upward to vertically downward, the driving unit 25 stops running, and then the air pump runs in the reverse direction, and the air pump extracts the air in the connecting pipe 22, so that the water in the shell 21 flows back into the diversion pipe 23, so that the dust attached to the inner wall of the diversion pipe 23 can be softened. It is worth noting that when the air pump runs in the reverse direction to extract the air in the connecting pipe 22, the amount of water extracted needs to be controlled to prevent the water in the shell 21 from flowing out from the upper part of the processing table 1 through the connecting pipe 22. The dust at the bend of the air outlet head 231 with the air outlet end pointing vertically downward automatically falls off after being softened, thus realizing the self-cleaning function.

[0048] Reference Figure 4 and Fig. 9: A partition plate 27 is arranged at the lower part of the rotating shaft 265, and the partition plate 27 is fixedly arranged in the outer shell 21. The partition plate 27 divides the dust removal chamber into a first cavity and a second cavity along the vertical direction. A plurality of partition holes 271 are opened on the partition plate 27, and the upper opening of the partition hole 271 is larger than the lower opening. A scraper 272 is fixedly arranged on the side wall of the rotating shaft 265, and the scraper 272 is slidably matched with the upper end surface of the partition plate 27.

[0049] The shunt pipe 23 is located at the upper part of the partition plate 27. After the air containing dust is discharged into the water by the air outlet head 231, the dust that comes into contact with the water no longer rises with the airflow, but gradually falls under the action of its own gravity and falls on the partition plate 27. Since the rotation speed of the rotating shaft 265 is relatively slow, the scraper 272 will not lift up the dust settled on the partition plate 27 again when rotating with the rotating shaft 265. Under the action of the scraper 272, the dust on the partition plate 27 passes through the partition hole 271 and falls into the second cavity. Due to the structural characteristics of the partition hole 271 with a large opening at the top and a small opening at the bottom, the dust that enters the second cavity is not easy to enter the first cavity again. When the dustproof unit 2 is in operation, the dust content in the first cavity can be reduced in time.

[0050] Reference Fig. 9 and Fig.10 A cleaning unit 28 for cleaning the filter 24 is arranged on the outer shell 21, and the cleaning unit 28 includes a water supply shell 281 fixedly arranged on the outer shell 21, and the water supply shell 281 is an annular structure. The water supply shell 281 is located on the upper part of the filter 24, and an annular plate 282 is rotatably arranged on the inner ring side wall of the water supply shell 281. The axis of the annular plate 282 is colinear with the axis of the water supply shell 281, and a water sprayer 283 is fixedly arranged on the side wall of the connecting pipe 22 located in the outer shell 21. The water sprayer 283 is located on the upper side of the filter 24, and the end of the water sprayer 283 away from the connecting pipe 22 is arranged on the annular plate 282, and the water supply shell 281 supplies water to the water sprayer 283.

[0051] Reference Figure 6 and Figure 8 A water tank 286 is provided on one side of the outer shell 21, and the water tank 286 is connected to the second cavity. The connection point between the water tank 286 and the second cavity is located at the upper layer of the second cavity. A filter plate 287 is provided at the connection point between the water tank 286 and the second cavity. A circulation pipe 284 is connected between the water tank 286 and the water supply shell 281, and a water pump 285 is provided on the circulation pipe 284.

[0052] The dust falling into the second cavity is statically layered in the second cavity, and the water in the upper layer of the second cavity is filtered by the filter plate 287 and flows into the water tank 286, and supplies water to the water supply shell 281 under the drainage of the circulation pipe 284. When the dustproof unit 2 is in operation, the driving unit 25 drives the connecting pipe 22 to rotate, and the connecting pipe 22 drives the water sprayer 283 to rotate synchronously. The water sprayer 283 sprays water on the upper part of the filter screen 24, and the water flows through the filter screen 24 from top to bottom. The rotating area formed by the water sprayer 283 when the connecting pipe 22 rotates completely covers the upper part of the filter screen 24, so that the dust attached to the lower part of the filter screen 24 can be washed away by the downstream water flow, thereby completing the cleaning of the filter screen 24.

[0053] Reference Figure 3 and Figure 4 : The bottom of the housing 21 is an inverted cone structure, and a switch valve 212 is arranged at the lower part of the inverted cone structure.

[0054] The inverted cone structure refers to the second cavity. After the dustproof unit 2 has been running for a period of time, a large amount of sediment will exist at the bottom of the shell 21. In order to avoid excessive accumulation of sediment, the switch valve 212 arranged at the bottom of the shell 21 needs to be opened after a period of use to discharge the sediment accumulated at the bottom of the shell 21 in time to avoid blockage of the bottom of the shell 21 by the sediment. At the same time, the water in the water tank 286 needs to be filled in time to ensure that there is sufficient water in the shell 21.

[0055] Working principle: When cutting the road bricks, the floor bricks need to be placed on the processing table 1 for cutting. At the same time, the fan 221 arranged on the connecting pipe 22 is started. The fan 221 extracts the air in the processing table 1. The connecting pipe 22 discharges the air at the processing table 1 into the dust removal chamber. The multiple shunt pipes 23 arranged at the end of the connecting pipe 22 in the dust removal chamber shunt the air carrying dust, and then discharge it through the air outlet 231 at the end of each shunt pipe 23. In the process of air discharge, the air carries the dust into the water in the shell 21. Since the air is shunted by the shunt pipe 23, compared with directly injecting the air into the shell 21 through a single connecting pipe 22, the air shunted by the shunt pipe 23 has a larger contact area with the water in the shell 21, and each air outlet 231 is evenly distributed in the shell 21, so that the air discharged into the shell 21 can fully contact the water in the shell 21. In this way, part of the dust has been intercepted by the water in the outer shell 21 before reaching the filter 24. At the same time, since the horizontal cross-sectional area of ​​the connecting pipe 22 is much smaller than the horizontal cross-sectional area of ​​the outer shell 21, the flow rate of the diverted air will drop rapidly when entering the outer shell 21. In this way, part of the dust that rises above the liquid surface with the air will gradually settle in the water under the action of its own gravity. Only a small amount of dust will move with the air to the lower part of the filter 24. Under the interception of the filter 24, the air passes through the filter 24 and enters the discharge chamber, and is finally discharged from the air outlet 211. Compared with allowing the air carrying dust to pass through the filter 24 from top to bottom, the interception pressure of the filter 24 is smaller.

[0056] The above embodiments only express one or several implementation modes of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the protection scope of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. A dust prevention device for cutting municipal road bricks, comprising a processing table (1) and a dust prevention unit (2) arranged on one side of the processing table (1); It is characterized in that The dust prevention unit (2) comprises a shell (21) vertically arranged on one side of the processing table (1); the shell (21) is a cylindrical structure; a connecting pipe (22) is arranged between the shell (21) and the processing table (1); two ends of the connecting pipe (22) are respectively connected to the upper end of the shell (21) and the upper end of the processing table (1); a filter screen (24) is arranged inside the shell (21); the filter screen (24) divides the shell (21) into a dust removal chamber and a discharge chamber in the vertical direction; the connecting pipe (22) connected to the shell (21) passes through the filter screen (24) in the vertical direction and extends to the bottom of the filter screen (24); a plurality of connecting pipes (22) are evenly arranged around the axis of the shell (21) at the end of the connecting pipe (22) located in the dust removal chamber A shunt pipe (23) is connected to the connecting pipe (22), and the extending direction of the shunt pipe (23) is parallel to the radial direction of the outer shell (21). An air outlet head (231) is provided at the end of each shunt pipe (23), and the air outlet end of the air outlet head (231) is vertically upward. The outer shell (21) is filled with water, and the liquid level in the outer shell (21) is higher than the air outlet end of the air outlet head (231) and lower than the filter screen (24). An air outlet (211) is provided at the top of the outer shell (21). After the air at the processing table (1) is discharged into the dust removal chamber through the connecting pipe (22), the shunt pipe (23) and the air outlet head (231), the air passes through the filter screen (24) in the vertical direction and is discharged from the air outlet (211).

2. A dust prevention device for municipal road brick cutting according to claim 1, characterized in that: The filter screen (24) is a rotating body structure, and the size of the upper end of the filter screen (24) is larger than the size of the lower end of the filter screen (24).

3. A dust prevention device for municipal road brick cutting according to claim 1, characterized in that: The connecting pipe (22) is a split structure, which is divided into two sections, one of which is arranged in the housing (21) along the vertical direction, and the other connects the connecting pipe (22) located in the housing (21) and the processing table (1). The two sections of the connecting pipe (22) are rotatably matched, and a driving unit (25) for driving the connecting pipe (22) to rotate is arranged on the upper part of the connecting pipe (22) vertically arranged in the housing (21). The driving unit (25) includes a first gear ring (251) fixedly sleeved on the outer periphery of the connecting pipe (22), a first gear (252) meshing with the first gear ring (251) is arranged on one side of the first gear ring (251), and a rotation driver (253) for driving the first gear (252) to rotate is arranged on the upper end of the first gear (252).

4. A dust prevention device for municipal road brick cutting according to claim 1, characterized in that: The air outlet head (231) is rotatably matched with the diverter pipe (23), and a rotating unit (26) for driving the air outlet head (231) to rotate is provided on the air outlet head (231). The air outlet head (231) has an air outlet mode and a self-cleaning mode. In the air outlet mode, the air outlet end of the air outlet head (231) faces vertically upwards, and in the self-cleaning mode, the air outlet end of the air outlet head (231) faces vertically downwards.

5. A dust prevention device for cutting municipal road bricks according to claim 4, characterized in that: The rotating unit (26) comprises a rotating shaft (265) fixedly arranged in a vertical direction at the inner end of the connecting pipe (22) located in the housing (21); the axis of the rotating shaft (265) is colinear with the axis of the housing (21); a second gear ring (264) is sleeved on the rotating shaft (265); the second gear ring (264) and the rotating shaft (265) are interference fit; under the action of external force, the second gear ring (264) and the rotating shaft (265) are rotationally matched; a bevel gear ring (261) is fixedly sleeved on the air outlet head (231); a bevel gear (262) is meshed on one side of the bevel gear ring (261); a second gear (263) is fixedly arranged at the end of the bevel gear (262); the second gear (263) and the second gear ring (264) are meshed with each other.

6. A dust prevention device for municipal road brick cutting according to claim 5, characterized in that: A clutch ring (266) is fixedly arranged at the lower end of the second gear ring (264), and the axis of the clutch ring (266) is colinear with the axis of the second gear ring (264). A friction plate (267) is arranged on one side of the clutch ring (266) to move along the radial direction of the outer shell (21). An extension rod (268) is fixedly arranged on the end of the friction plate (267) away from the clutch ring (266) along the moving direction of the friction plate (267). An electric push rod (269) is horizontally arranged on the side wall of the outer shell (21), and the end of the electric push rod (269) passes through the side wall of the outer shell (21) and is fixedly connected to the end of the extension rod (268).

7. A dust prevention device for cutting municipal road bricks according to claim 5, characterized in that: A partition plate (27) is arranged at the lower part of the rotating shaft (265), and the partition plate (27) is fixedly arranged in the housing (21). The partition plate (27) divides the dust removal chamber into a first cavity and a second cavity along the vertical direction. A plurality of partition holes (271) are provided on the partition plate (27), and the upper opening of the partition hole (271) is larger than the lower opening. A scraper (272) is fixedly arranged on the side wall of the rotating shaft (265), and the scraper (272) is slidably matched with the upper end surface of the partition plate (27).

8. A dust prevention device for municipal road brick cutting according to claim 7, characterized in that: A cleaning unit (28) for cleaning the filter screen (24) is arranged on the outer shell (21). The cleaning unit (28) comprises a water supply shell (281) fixedly arranged on the outer shell (21). The water supply shell (281) is an annular structure. The water supply shell (281) is located on the upper part of the filter screen (24). An annular plate (282) is rotatably arranged on the inner ring side wall of the water supply shell (281). The axis of the annular plate (282) is colinear with the axis of the water supply shell (281). A water sprayer (283) is fixedly arranged on the side wall of the connecting pipe (22) located in the outer shell (21). The water sprayer (283) is located on the upper side of the filter screen (24). One end of the water sprayer (283) away from the connecting pipe (22) is arranged on the annular plate (282). The water supply shell (281) supplies water to the water sprayer (283).

9. A dust prevention device for municipal road brick cutting according to claim 8, characterized in that: A water tank (286) is provided on one side of the outer shell (21). The water tank (286) is connected to the second cavity. The connection point between the water tank (286) and the second cavity is located at the upper layer of the second cavity. A filter plate (287) is provided at the connection point between the water tank (286) and the second cavity. A circulation pipe (284) is connected between the water tank (286) and the water supply shell (281). A water pump (285) is provided on the circulation pipe (284).

10. A dust prevention device for municipal road brick cutting according to claim 1, characterized in that: The bottom of the housing (21) is an inverted cone structure, and a switch valve (212) is arranged at the lower part of the inverted cone structure.

Images