Closed loop water curtain dust suppression device for refractory brick cutting dust

Abstract

The utility model discloses a kind of closed-loop water curtain dust suppression devices of refractory brick cutting dust, including cutting unit, the cutting unit includes cutting platform and high-speed saw blade, dustproof cover body is arranged along high-speed saw blade half-enclosing around on the cutting platform, dust guide groove is provided along the surface of the cutting platform, the dustproof cover body uses 304 stainless steel detachable cover body, its inner wall is attached to the curved surface profile of high-speed saw blade, the vertical distance of the top of dustproof cover body from saw blade axis is less than or equal to 50mm, water curtain unit is provided on the dustproof cover body, the water curtain unit includes water supply pipe and the nozzle connected with the water supply pipe, the end of the water supply pipe is connected with flow regulating valve, the water supply pipe is connected with water supply pump, the water supply pipe is pressure hose structure, the nozzle is fan nozzle, the nozzle axis of the fan nozzle is 15 ° ± 5 ° angle of plane with high-speed saw blade, fan nozzle sprinkling covers to the contact area of saw blade and brick.

Description

Technical Field

[0001] This utility model belongs to the field of industrial dust control technology, specifically relating to a closed-loop water curtain dust suppression device for refractory brick cutting dust. Background Technology

[0002] Current refractory brick cutting technology utilizes dry diamond saw blades, generating large amounts of fine dust below PM10 (mainly composed of Al2O3, SiO2, MgO, etc.). Traditional baghouse dust collectors have a capture rate of less than 30% for ultrafine dust. Existing wet dust suppression methods mostly employ direct spraying, leading to water waste, mud splashing, and failing to address the secondary pollution problem of dust-laden wastewater. Furthermore, emissions are difficult to control, violating particulate matter limits (≤20 mg / m³). 3 The occupational exposure concentration of dust exceeds the standard (total dust limit 8 mg / m³). 3 This leads to a high risk of silicosis.

[0003] In view of the above factors, a closed-loop water curtain dust suppression device for refractory brick cutting dust is provided, which achieves the purpose of dust reduction and emission by water curtain dust suppression and solid waste resource utilization. Utility Model Content

[0004] The purpose of this invention is to provide a closed-loop water curtain dust suppression device for refractory brick cutting dust, so as to solve the problems mentioned in the background art.

[0005] The purpose of this utility model is achieved through the following technical solution: a closed-loop water curtain dust suppression device for refractory brick cutting dust, including a cutting unit, the cutting unit including a cutting platform and a high-speed saw blade, a dust suppression protective cover is arranged semi-encircling the high-speed saw blade on the cutting platform, and a dust guide groove is arranged along the surface of the cutting platform.

[0006] The dust suppression protective cover is made of 304 stainless steel and is detachable. Its inner wall is fitted with the curved contour of the high-speed saw blade. The vertical distance between the top of the dust suppression protective cover and the saw blade axis is ≤50mm.

[0007] The dust suppression protective cover is equipped with a water curtain unit, which includes a water supply pipe and a nozzle connected to the water supply pipe. The end of the water supply pipe is connected to a flow regulating valve, and the water supply pipe is connected to a water supply pump.

[0008] Furthermore, the water supply pipe is a pressure-resistant flexible hose, and the nozzle is a fan-shaped nozzle. The nozzle axis of the fan-shaped nozzle forms an angle of 15°±5° with the plane of the high-speed saw blade, and the fan-shaped nozzle sprays to cover the area where the saw blade contacts the brick.

[0009] Furthermore, a pressure gauge is installed on the water supply pipe, with a water pressure of 0.2-0.5MPa and a flow rate of 0.8-1.5L / min, to achieve dust suppression in a mist-water mixed state.

[0010] Furthermore, a sealing guide groove is provided in the cutting platform along the horizontal transverse direction, and the sealing guide groove has a V-shaped groove structure;

[0011] The bottom inclination angle of the sealed flow guide groove is ≥5°, and the sealed flow guide groove is lined with a polyurethane wear-resistant layer.

[0012] Furthermore, the sealed flow channel outlet on the cutting platform is connected to the purification unit, which includes a coarse sedimentation zone, an inclined plate settling zone, and a clear water tank, all arranged in parallel.

[0013] Furthermore, the coarse sedimentation zone includes a primary sedimentation tank and a secondary sedimentation tank, which are connected in series.

[0014] Furthermore, the outlet pipe of the clear water tank is connected to the filter assembly, the filter assembly is connected to the water supply tank through the connecting pipe, the water supply tank is connected to the water supply pipe through the connecting pipe, and an adjustment valve is provided between the connecting pipe and the water supply pipe.

[0015] A method for using a closed-loop water curtain dust suppression device for refractory brick cutting dust includes the following steps:

[0016] The cutting machine is equipped with a dust suppression protective cover, and the nozzle is a Spraying Systems 1 / 4GG-SS type nozzle, 150mm away from the cutting point.

[0017] Dust suppression operation procedure, cutting start command triggering responsibility, the spraying system is triggered synchronously when the cutting machine operator starts the equipment;

[0018] Operating details: After pressing the start button of the cutting machine, the system automatically sends an electrical signal command to the spray control unit to request the water supply to be turned on. The water pressure is preset to 0.3MPa (which can be adjusted through the control panel). This pressure value has been experimentally verified to balance the dust suppression effect and water consumption. A conical water mist coverage area is formed through the fan-shaped nozzle array. The water mist coverage range strictly matches the saw blade working radius + 50mm redundancy to ensure complete coverage of the cutting contact area.

[0019] The PM2.5-PM10 dust cloud generated by the high-speed rotating saw blade is captured by water mist particles through inertial collision, diffusion and interception mechanisms. The dust-water mixture forms mud droplets that fall into the sealed guide channel due to gravity.

[0020] The sealed diversion channel leads to the sedimentation zone through UPVC pipes. After coarse sedimentation, flocculation and fine sedimentation, the sedimentation tank is cleaned weekly. The sludge is filtered and mixed with clay at a ratio of 1:3, and then sintered to make refractory gaskets (refractory temperature ≥1580℃).

[0021] The application of a closed-loop water curtain dust suppression device for refractory brick cutting dust involves applying the method of using the closed-loop water curtain dust suppression device to the treatment of refractory brick cutting dust, thereby achieving dust reduction and emission through water curtain dust suppression and solid waste resource utilization.

[0022] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0023] The source water treated by this utility model can be recycled: the supernatant is adjusted to pH (maintained at 6.5-7.5) and then reused in the spray system (water curtain unit). The sludge is treated and dehydrated to a moisture content of ≤30% by a plate and frame filter press (54) to produce refractory aggregate (Al2O3 content ≥45%).

[0024] This invention achieves efficient solid-liquid separation. The purification unit includes a coarse sedimentation zone, an inclined plate settling zone, and a clear water tank. The coarse sedimentation zone, the inclined plate settling zone, and the clear water tank are arranged in parallel. The coarse sedimentation zone includes a primary sedimentation tank and a secondary sedimentation tank, which are arranged in series. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall design of this utility model;

[0026] Figure 2 This is a utility model Figure 1 Enlarged view of a portion;

[0027] Figure 3 This is a schematic diagram of the cross-section of the sealing guide groove of this utility model;

[0028] Figure 4 This is a schematic diagram of the purification unit of this utility model;

[0029] Figure 5 This is a schematic diagram of the coarse sedimentation zone of this utility model;

[0030] Figure 6 This is a schematic diagram of the inclined plate settlement zone of this utility model. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0032] In the description of this utility model, it should be noted that, unless otherwise explicitly 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 direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0033] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model.

[0034] like Figure 1-6 As shown, a closed-loop water curtain dust suppression device for refractory brick cutting dust includes a cutting unit 1, the cutting unit 1 includes a cutting platform 2 and a high-speed saw blade 3, a dust suppression protective cover 4 is arranged on the cutting platform 2 along the high-speed saw blade 3 in a semi-encircling manner, and a dust guide groove 5 is arranged along the surface of the cutting platform 2.

[0035] The dust suppression protective cover 4 is made of 304 stainless steel and is a detachable cover. Its inner wall is fitted with the curved contour of the high-speed saw blade 3. The top of the dust suppression protective cover 4 is ≤50mm from the vertical distance of the saw blade axis.

[0036] The high-speed saw blade 3 is fixed to the cutting platform 2 by a bracket, and the high-speed saw blade 3 is driven to rotate by a motor. The motor controlling the high-speed saw blade 3 is connected to an external PLC controller via a connecting cable.

[0037] The dust suppression protective cover 4 is equipped with a water curtain unit 6. The water curtain unit 6 includes a water supply pipe 7 and nozzles 8 connected to the water supply pipe 7. The nozzles 8 are detachably connected to the dust suppression protective cover 4. The water supply pipe 7 is connected to the inlet of the nozzles 8, and a flow regulating valve 9 is connected to the end of the water supply pipe 7. The water supply pipe 7 is connected to a water supply tank, and the water source is delivered to the nozzles for spraying through the pipeline pump.

[0038] The water pump is connected to an external PLC controller via a connecting cable. The PLC controller can simultaneously control the water supply from the pump and the rotation of the high-speed saw blade 3.

[0039] To facilitate dust suppression by covering the contact area with the nozzle during use and achieving a mist-water mixture, the water supply pipe 7 is a pressure-resistant flexible hose structure, and the nozzle 8 is a fan-shaped nozzle. The nozzle axis of the fan-shaped nozzle forms an angle of 15°±5° with the plane of the high-speed saw blade 3, and the fan-shaped nozzle sprays to cover the contact area between the high-speed saw blade 3 and the brick.

[0040] A pressure gauge is installed on the water supply pipe 7. The water pressure in the water supply pipe is 0.2-0.5MPa and the flow rate is 0.8-1.5L / min, so as to achieve dust suppression in a mist-water mixture state.

[0041] To facilitate the backflow of wastewater through the sealed guide channel during use, a sealed guide channel 11 is provided in the cutting platform 2 along the horizontal direction. The sealed guide channel 11 has a V-shaped groove structure.

[0042] The bottom inclination angle of the sealing guide groove 11 is ≥5°, and the sealing guide groove 11 is lined with a polyurethane wear-resistant layer 12.

[0043] To facilitate the treatment of dusty wastewater during use and avoid secondary pollution, the outlet of the sealed guide channel 11 on the cutting platform 2 is connected to the purification unit 13 through a UPVC pipe. The purification unit 13 includes a coarse sedimentation zone 14, an inclined plate settling zone 15, and a clear water tank 16, which are arranged in parallel.

[0044] The coarse sedimentation zone 14 includes a primary sedimentation tank 17 and a secondary sedimentation tank 18, which are connected in series (with valves and pipeline pumps installed between them).

[0045] The primary sedimentation tank 17 is equipped with a stirring rod, on which stirring blades are fixedly mounted. The stirring rod is driven to rotate by a motor.

[0046] In the primary sedimentation tank 17, coagulant is added to the raw water, which is then vigorously agitated by a stirring rod to produce flocs. The coagulated water from the primary sedimentation tank 17 enters the secondary sedimentation tank 18, which is equipped with a guide tube. In the secondary sedimentation tank 18, flocculant is added to form larger flocs. After the raw water remains in the secondary sedimentation tank 18 for 10-15 minutes, it is pumped into the inclined plate settling zone 15. The inclined plate packing in the inclined plate settling zone 15 provides 120 m² / m³ of water. 3Specific surface area, after 24 hours of settling, the SS value is reduced to ≤50mg / L. A funnel-shaped or wave-shaped trough is set at the bottom of the inclined plate settling zone 15 for collecting sludge. Impurity particles in the source water enter the funnel-shaped or wave-shaped trough at the bottom of the inclined plate settling zone 15 under the action of gravity and are discharged from the bottom sludge pipe. The source water flows upward through the inclined plate and out through the outlet.

[0047] A guide tube is installed in the secondary sedimentation tank 18. The guide tube is located in the middle of the guide plate in the secondary sedimentation tank 18. There is a gap between the guide tube and the secondary sedimentation tank 18. A stirring rod is installed inside the guide tube. A stirring blade is fixed on the stirring rod. The stirring rod is driven to rotate by a motor.

[0048] Wastewater treated in the secondary sedimentation tank 18 enters the inclined plate settling zone 15 for further treatment before entering the clear water tank 16.

[0049] To facilitate the reuse of water during use, the outlet pipe of the clear water tank 16 is connected to the filter assembly 19. The filter assembly 19 is connected to the water supply tank (not shown in the prior art diagram, the water supply tank is connected to the pump body for water supply) via a connecting pipe. The water supply tank is connected to the water supply pipe 7 via a connecting pipe. An adjustment valve is provided between the connecting pipe and the water supply pipe 7.

[0050] The water outlet pipe of the clear water tank is connected to the filter assembly 19. The filter assembly 19 includes an activated carbon filter cylinder and a sand filter cylinder arranged in series, with the activated carbon filter cylinder in front and the sand filter cylinder behind. The water outlet pipe of the sand filter cylinder is connected to the water supply pipe. Water is pumped between the clear water tank 16 and the filter assembly.

[0051] A method for using a closed-loop water curtain dust suppression device for refractory brick cutting dust includes the following steps:

[0052] The cutting machine is equipped with a dust suppression protective cover, and the nozzle is a Spraying Systems 1 / 4GG-SS type nozzle, 150mm away from the cutting point.

[0053] Dust suppression operation procedure, cutting start command triggering responsibility, the spraying system is triggered synchronously when the cutting machine operator starts the equipment;

[0054] Operating details: After pressing the start button of the cutting machine, the system automatically sends an electrical signal command to the spray control unit to request the water supply to be turned on. The water pressure is preset to 0.3MPa (which can be adjusted through the control panel). This pressure value has been experimentally verified to balance the dust suppression effect and water consumption. A conical water mist coverage area is formed through the fan-shaped nozzle array. The water mist coverage range strictly matches the saw blade working radius + 50mm redundancy to ensure complete coverage of the cutting contact area.

[0055] The PM2.5-PM10 dust cloud generated by the high-speed rotating saw blade is captured by water mist particles through inertial collision, diffusion and interception mechanisms. The dust-water mixture forms mud droplets that fall into the sealed guide channel due to gravity.

[0056] The sealed diversion channel leads to the sedimentation zone through UPVC pipes. After coarse sedimentation, flocculation and fine sedimentation, the sedimentation tank is cleaned weekly. The sludge is filtered and mixed with clay at a ratio of 1:3, and then sintered to make refractory gaskets (refractory temperature ≥1580℃).

[0057] The application of a closed-loop water curtain dust suppression device for refractory brick cutting dust involves applying the method of using the closed-loop water curtain dust suppression device to the treatment of refractory brick cutting dust, thereby achieving dust reduction and emission through water curtain dust suppression and solid waste resource utilization.

[0058] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0059] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A closed-loop water curtain dust suppression device for refractory brick cutting dust, characterized in that: The cutting unit (1) includes a cutting platform (2) and a high-speed saw blade (3). A dust suppression protective cover (4) is provided on the cutting platform (2) along the high-speed saw blade (3) in a semi-encircling manner. A dust guide groove (5) is provided on the surface of the cutting platform (2). The dust suppression protective cover (4) is made of 304 stainless steel and is detachable. Its inner wall is fitted with the curved contour of the high-speed saw blade (3). The top of the dust suppression protective cover (4) is ≤50mm from the vertical distance of the saw blade axis. The dust suppression protective cover (4) is provided with a water curtain unit (6), which includes a water supply pipe (7) and a nozzle (8) connected to the water supply pipe (7). The end of the water supply pipe (7) is connected to a flow regulating valve (9), and the water supply pipe (7) is connected to a water supply pump.

2. The closed-loop water curtain dust suppression device for refractory brick cutting dust according to claim 1, characterized in that: The water supply pipe (7) is a pressure-resistant hose structure, and the nozzle (8) is a fan-shaped nozzle. The nozzle axis of the fan-shaped nozzle forms an angle of 15°±5° with the plane of the high-speed saw blade (3). The fan-shaped nozzle sprays and covers the contact area between the high-speed saw blade (3) and the brick.

3. The closed-loop water curtain dust suppression device for refractory brick cutting dust according to claim 2, characterized in that: A pressure gauge is installed on the water supply pipe (7). The water pressure of the water supply pipe is 0.2-0.5MPa and the flow rate is 0.8-1.5L / min, so as to achieve dust suppression in a mist-water mixed state.

4. The closed-loop water curtain dust suppression device for refractory brick cutting dust according to claim 3, characterized in that: The cutting platform (2) is provided with a sealing guide groove (11) along the horizontal direction, and the sealing guide groove (11) is a V-shaped groove structure; The bottom inclination angle of the sealed guide groove (11) is ≥5°, and the sealed guide groove (11) is lined with a polyurethane wear-resistant layer (12).

5. The closed-loop water curtain dust suppression device for refractory brick cutting dust according to claim 4, characterized in that: The outlet of the sealed guide channel (11) on the cutting platform (2) is connected to the purification unit (13) through a UPVC pipe. The purification unit (13) includes a coarse sedimentation zone (14), an inclined plate settling zone (15), and a clear water tank (16). The coarse sedimentation zone (14), the inclined plate settling zone (15), and the clear water tank (16) are arranged in parallel.

6. The closed-loop water curtain dust suppression device for refractory brick cutting dust according to claim 5, characterized in that: The coarse sedimentation zone (14) includes a primary sedimentation tank (17) and a secondary sedimentation tank (18), which are connected in series.

7. The closed-loop water curtain dust suppression device for refractory brick cutting dust according to claim 6, characterized in that: The outlet pipe of the clear water tank (16) is connected to the filter assembly (19), the filter assembly (19) is connected to the water supply source tank through the connecting pipe, the water supply source tank is connected to the water supply pipe (7) through the connecting pipe, and an adjustment valve is provided between the connecting pipe and the water supply pipe (7).

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