A wet dust removal device for cutting large and medium-sized castings

Abstract

The utility model discloses a cut big and medium -sized casting with wet dust removal device belongs to dust purification field. Including frame main part, antechamber drive double speed reducer, fire -retardant fire -resistant cloth, explosion -proof lighting warning light, walking track and supporting parts, controlling means, dust fog filter, off -wind machine, flue gas exhaust pipe. The water in equipment water tank is promoted to form circulating water curtain with the negative pressure of off -wind machine. The air containing smoke dust is first impacted with water curtain under the action of certain airflow organization, and part of the viscosity material in it is intercepted in water. Then pass through water screen and enter the air -water channel, and the water in the channel produces strong stirring and mixes, and the particulate matter is completely cleaned to water. After a part of water follows airflow organization and enters the gas collecting box, air -water separates, and the treated gas passes through the water baffle and is discharged to the atmosphere through the off -wind machine, and the separated water flows into the overflow tank after gathering in the gas collecting box, and overflows from the overflow tank to the water flooding board to form a water curtain, and the cycle is repeated, and the smoke dust is removed.

Description

Technical Field

[0001] This utility model relates to the field of dust purification, specifically to a wet dust removal device for cutting large and medium-sized castings. Background Technology

[0002] The dust and fumes generated during grinding and air gouging operations in the post-grinding processing workshop are severe, resulting in a harsh workshop environment that fails to meet the needs of the sustainable and rapid development of the foundry industry. The cutting process generates a large amount of heat, raising the ambient temperature and requiring good ventilation and cooling, while humidity must generally be maintained within a certain range. Cutting castings also produces metal dust and fumes containing harmful substances such as metal oxides, necessitating effective dust and fume extraction equipment to protect the health of operators. The cutting equipment generates noise during operation, and long-term exposure to high noise levels can harm human health. To improve the workshop working environment, protect employee health, and increase production efficiency, a mobile wet dust collection device was designed. This invention proposes a wet dust collection method that aims to solve the aforementioned problems by achieving dust purification, heat reduction, and noise reduction. Utility Model Content

[0003] Dust and mist filters were designed according to site requirements, and a mobile retractable room was set up as the operating area. During operation, the blower generates a certain cross-sectional wind speed in the working area, with an average no-load wind speed of 0.3-0.5 m / s, which can effectively and promptly remove the generated smoke and dust, and the environment in the worker's operating area meets industrial hygiene standards.

[0004] A wet dust removal device for cutting large and medium-sized castings includes a mobile telescopic house 1, a dust and mist filter 2, and an exhaust duct and chimney 3;

[0005] Among them: the mobile telescopic house 1 includes an active frame, a driven frame, a telescopic house drive dual reducer, explosion-proof lighting, warning lights, a travel track and supporting components;

[0006] The driven frame consists of multiple movable frames connected by parallelogram-shaped connecting rods. The beams and columns are made of high-quality 40*60*2.75 galvanized square tubing, the connecting rods are made of 3*5*2.75 galvanized square tubing, and the diagonal braces are made of 2*4*2.75 galvanized square tubing.

[0007] The dust and mist filter 2 includes the main body 4, which is made of galvanized steel plate, water tank 5, flood plate 6, water collection tank 7, steam and water channel 8, water baffle 9, and backflow grid 10.

[0008] Water tank 5 is welded to the main body of equipment 4, water flow plate 6 is hung on the support, water collection tank 7 is welded from galvanized sheet, steam-water channel 8 and water baffle 9 are welded from galvanized sheet, and backflow grid 10 is welded from galvanized sheet.

[0009] The aforementioned wet dust removal device for cutting large and medium-sized castings also includes a control device, flame-retardant and fire-resistant cloth, a blower, a float valve, an exhaust duct and chimney, a control system, and a protection system. The mobile telescopic house includes an active frame, a driven frame, a telescopic house drive dual reducer, explosion-proof lighting, warning lights, a travel track, and supporting components.

[0010] The aforementioned wet dust removal device for cutting large and medium-sized castings is equipped with a telescopic room as the operating area, which is suitable for large and medium-sized workpieces; it can be automatically or manually folded to any position, saving factory floor space; the sprocket is driven by a bidirectional reducer and chain drive, and the walking mechanism adopts a double-stage safety limit to ensure the safety and reliability of the walking mechanism.

[0011] The aforementioned wet dust removal device for cutting large and medium-sized castings is equipped with a dust and mist filter. This filter includes the main body of the equipment, a water tank, a flashing plate, a water collection tank, an air-water channel, a baffle plate, and a flow guide. The dust and mist filter utilizes the negative pressure of a blower to lift water from the equipment's water tank, forming a circulating water curtain. Air containing dust particles, under the influence of a specific airflow pattern, first collides with the water curtain, trapping some of the viscous substances in the water. Then, it passes through the water curtain into the air-water channel, where it undergoes intense mixing with the water, completely washing away the particulate matter. A portion of the water follows the airflow pattern into the air collection tank, where air and water separate. The treated gas passes through the baffle plate and is then discharged into the atmosphere by an exhaust fan. The separated water collects in the air collection tank and flows into an overflow trough, overflowing from the overflow trough onto the flashing plate to form a water curtain.

[0012] The dust and fog processor is equipped with a heating device and is used when the indoor temperature is below zero degrees Celsius.

[0013] A switching valve is installed before the wet dust removal device used for cutting large and medium-sized castings. In summer, the dust is discharged naturally, while in winter, the dust is circulated in the pipeline to ensure the indoor temperature.

[0014] The wet dust removal device for cutting large and medium-sized castings uses a variable frequency speed control motor with a speed range of 1480-2800 r / min, and the air volume can be adjusted according to the needs of the site.

[0015] Mobile retractable house: It is a semi-enclosed space composed of a frame, flame-retardant and fire-resistant cloth, explosion-proof lighting, etc., forming an effective work site.

[0016] Exhaust and smoke purification system: dust and mist filter, exhaust fan, smoke exhaust duct.

[0017] The mobile retractable house consists of the main frame, including the active frame, driven frame, front chamber drive dual reducer, explosion-proof lighting, warning lights, travel track and supporting components, and control device.

[0018] The dimensions of the mobile retractable house are: 6000x6000x4200 mm (length x width x height).

[0019] Indoor on-load section wind speed: 0.3-0.5 m / s;

[0020] Explosion-proof reducer: 100# reducer, telescopic house operating speed 9m / min;

[0021] Explosion-proof lighting; model of explosion-proof lighting: uses 4 high-efficiency, low-consumption LED tubes, providing uniform illumination.

[0022] Type 101 flashing audible warning light;

[0023] The track is made of I-beam shaped wear-resistant and corrosion-resistant rail steel;

[0024] Working principle of mobile retractable houses:

[0025] The mobile retractable house uses multiple movable frames connected by parallelogram-shaped rods. The crossbeams and columns are made of high-quality 40*60*2.75 galvanized square tubing, the connecting rods are made of 3*5*2.75 galvanized square tubing, and the diagonal braces are made of 2*4*2.75 galvanized square tubing. The appearance is smooth, sturdy, and robust. The front of the retractable house frame is enclosed. Driven by a motor, the entire house folds, and the frames are sealed with flame-retardant cloth, forming an isolated, independent working space to prevent pollution of the workshop environment during operation.

[0026] The working principle of the dust and mist filter: The negative pressure of the blower lifts the water in the equipment's tank, forming a circulating water curtain. Air containing dust particles, under the influence of a specific airflow, first collides with the water curtain, trapping some of the viscous substances in the water. Then, it passes through the water curtain into the air-water channel, where it is intensely mixed with the water, completely washing away the particles. A portion of the water follows the airflow into the gas collection box, where air and water separate. The treated gas passes through a baffle plate and is then discharged into the atmosphere by an exhaust fan. The separated water collects in the gas collection box and flows into an overflow trough, overflowing onto a flooded plate to form another water curtain. This cycle repeats continuously, removing dust and mist. A special flocculant is added to the circulating water to alter the adhesion of the paint mist, causing it to float on the surface and clump together for easy cleaning. During operation, fresh water is continuously and automatically added to the tank, allowing for repeated water recycling without wastewater discharge or secondary environmental pollution.

[0027] The system has two fault alarm modes: motor overload and limit switch failure. Once a fault occurs, the control system will immediately and automatically disconnect the power supply to the relevant equipment to prevent accidents and will issue an audible and visual alarm.

[0028] Noise control in the workplace: The following measures will be taken to reduce noise and ensure that indoor noise is below 80 dBa. Low-noise fans will be used, and fan silencers will be installed. The fans will be installed in a fully enclosed, isolated manner, and vibration reduction measures will be taken to reduce external noise. The duct cross-sectional dimensions will be reasonable, and the duct velocity will not exceed 12 m / s.

[0029] Advantages of this utility model:

[0030] High dust purification efficiency: The unique structural features and multi-stage continuous purification process of the dust filter determine its high purification efficiency, achieving a removal efficiency of over 98% for dust generated during production and other processes. Utilizing high-speed induced water lifting from the exhaust system, the exhaust system and water lifting system are integrated into one, forming a pump-free water circulation system. This eliminates the need for a separate water pump circulation system, simplifying the structure and reducing the footprint. The pump-free circulation system overcomes the fatal flaw of existing water pump systems being prone to clogging, making maintenance simple, equipment performance reliable, less prone to failure, and easy to use. Due to the intense mixing and agitation of exhaust gas with water mist in the packing material and air-water channels, a multi-stage purification process is formed, improving purification efficiency. Installation is flexible and convenient; the dust filter equipment generally does not require special civil engineering foundations, only a flat site, making it suitable for both new factories and existing workshops. Furthermore, the dust filter adopts an advanced modular design, allowing for flexible selection of appropriate specifications according to user needs. Users can also choose to operate simultaneously or independently, saving on fan power consumption operating costs. The equipment operates safely and reliably. The dust and mist filter has no moving parts other than the blower; therefore, as long as the blower is functioning properly, the dust and mist filter can be used normally. Operation and maintenance are simple. The dust and mist filter forms a water curtain by lifting circulating water through the blower, eliminating the need for pumps, valves, filters, pipes, and other auxiliary devices, making daily maintenance very simple. Normal operation requires only turning on the blower. The cleaning cycle depends on the amount of water used. The telescopic room track uses a trench design to prevent metal shavings and other impurities from accumulating on the track and affecting operation. A protective shovel is also installed in front of the track wheels to promptly remove any residual metal shavings during operation, ensuring smooth running. An auxiliary device for the dust and mist processor includes a heating element for use when the indoor temperature is below zero degrees Celsius. For gas and moisture treatment, to prevent indoor temperature from being carried away by the exhaust air in winter, the chimney pipe is returned to the room. Special treatment is added to the exhaust section of the pipe to prevent moisture from entering the room. A switching valve is installed before the device; natural exhaust occurs in summer, while internal pipe circulation is used in winter to maintain indoor temperature. Workpiece entry and exit: When a workpiece enters or exits, the telescopic enclosure can be retracted back to its original position, exposing the workstation on the ground. When the workpiece is hoisted to the designated position, press the electric button, and the telescopic enclosure will move forward to the designated position, allowing the worker to proceed to the next process. Attached Figure Description

[0031] Figure 1 Schematic diagram of a wet dust removal device for cutting large and medium-sized castings;

[0032] Figure 2 Rear view of the dust and mist filter;

[0033] Figure 3 This is the main view of the dust and mist filter;

[0034] Figure 4 This is a cross-sectional view of a dust and mist filter. Detailed Implementation

[0035] The present invention will be further explained below with reference to specific implementation schemes, but it is not limited to the present invention. The structures, proportions, sizes, etc. shown in the accompanying drawings are only used to complement the content disclosed in the specification, so as to enable those skilled in the art to understand and read, and are not intended to limit the implementation conditions of the present invention. Therefore, they have no substantial technical significance. Any modification of the structure, change of the proportion relationship or adjustment of the size, without affecting the effect and purpose that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.

[0036] A wet dust removal device for cutting large and medium-sized castings includes a mobile telescopic house 1, a dust and mist filter 2, and an exhaust duct and chimney 3;

[0037] Among them: the mobile telescopic house 1 includes an active frame, a driven frame, a telescopic house drive dual reducer, explosion-proof lighting, warning lights, a travel track and supporting components;

[0038] The driven frame consists of multiple movable frames connected by parallelogram-shaped connecting rods. The beams and columns are made of high-quality 40*60*2.75 galvanized square tubing, the connecting rods are made of 3*5*2.75 galvanized square tubing, and the diagonal braces are made of 2*4*2.75 galvanized square tubing.

[0039] The dust and mist filter 2 includes the main body 4, which is made of galvanized steel plate, water tank 5, flood plate 6, water collection tank 7, steam and water channel 8, water baffle 9, and backflow grid 10.

[0040] Water tank 5 is welded to the main body of equipment 4, water flow plate 6 is hung on the support, water collection tank 7 is welded from galvanized sheet, steam-water channel 8 and water baffle 9 are welded from galvanized sheet, and backflow grid 10 is welded from galvanized sheet.

[0041] The aforementioned wet dust removal device for cutting large and medium-sized castings also includes a mobile telescopic house, a dust and mist filter, a control device, flame-retardant and fire-resistant cloth, a blower, a float valve, exhaust ducts and a chimney, a control system, and a protection system. The mobile telescopic house includes an active frame, a driven frame, a dual reducer for driving the telescopic house, explosion-proof lighting, warning lights, a travel track, and related components.

[0042] The aforementioned wet dust removal device for cutting large and medium-sized castings is equipped with a telescopic room as the operating area, which is suitable for large and medium-sized workpieces; it can be automatically or manually folded to any position, saving factory floor space; the sprocket is driven by a bidirectional reducer and chain drive, and the walking mechanism adopts a double-stage safety limit to ensure the safety and reliability of the walking mechanism.

[0043] The aforementioned wet dust removal device for cutting large and medium-sized castings is equipped with a dust and mist filter. This filter includes the main body of the equipment, a water tank, a flashing plate, a water collection tank, an air-water channel, a baffle plate, and a flow guide. The dust and mist filter utilizes the negative pressure of a blower to lift water from the equipment's water tank, forming a circulating water curtain. Air containing dust particles, under the influence of a specific airflow pattern, first collides with the water curtain, trapping some of the viscous substances in the water. Then, it passes through the water curtain into the air-water channel, where it undergoes intense mixing with the water, completely washing away the particulate matter. A portion of the water follows the airflow pattern into the air collection tank, where air and water separate. The treated gas passes through the baffle plate and is then discharged into the atmosphere by an exhaust fan. The separated water collects in the air collection tank and flows into an overflow trough, overflowing from the overflow trough onto the flashing plate to form a water curtain.

[0044] The dust and fog processor is equipped with a heating device and is used when the indoor temperature is below zero degrees Celsius.

[0045] A switching valve is installed before the wet dust removal device used for cutting large and medium-sized castings. In summer, the dust is discharged naturally, while in winter, the dust is circulated in the pipeline to ensure the indoor temperature.

[0046] The wet dust removal device for cutting large and medium-sized castings uses a variable frequency speed control motor with a speed range of 1480-2800 r / min, and the air volume can be adjusted according to the needs of the site.

[0047] Mobile retractable house: It is a semi-enclosed space composed of a frame, flame-retardant and fire-resistant cloth, explosion-proof lighting, etc., forming an effective work site.

[0048] Exhaust and smoke purification system: dust and mist filter, exhaust fan, smoke exhaust duct.

[0049] The mobile retractable house consists of the main frame, including the active frame, driven frame, front chamber drive dual reducer, explosion-proof lighting, warning lights, travel track and supporting components, and control device.

[0050] The dimensions of the mobile retractable house are: 6000x6000x4200 mm (length x width x height).

[0051] Indoor on-load section wind speed: 0.3-0.5 m / s;

[0052] Explosion-proof reducer: 100# reducer, telescopic house operating speed 9m / min;

[0053] Explosion-proof lighting; model of explosion-proof lighting: uses 4 high-efficiency, low-consumption LED tubes, providing uniform illumination.

[0054] Type 101 flashing audible warning light;

[0055] The track is made of I-beam shaped wear-resistant and corrosion-resistant rail steel;

[0056] Working principle of mobile retractable houses:

[0057] The mobile retractable house uses multiple movable frames connected by parallelogram-shaped rods. The crossbeams and columns are made of high-quality 40*60*2.75 galvanized square tubing, the connecting rods are made of 3*5*2.75 galvanized square tubing, and the diagonal braces are made of 2*4*2.75 galvanized square tubing. The appearance is smooth, sturdy, and robust. The front of the retractable house frame is enclosed. Driven by a motor, the entire house folds, and the frames are sealed with flame-retardant cloth, forming an isolated, independent working space to prevent pollution of the workshop environment during operation.

[0058] Features of mobile retractable houses

[0059] Suitable for large and medium-sized workpieces;

[0060] It can be automatically or manually folded to any position, saving factory floor space;

[0061] The sprocket is driven by a bidirectional reducer and chain drive, and the traveling mechanism adopts a two-stage safety limit to ensure its safety and reliability.

[0062] Explosion-proof lighting is installed inside the retractable house to ensure adequate indoor illumination.

[0063] Working principle of dust and mist filter:

[0064] The dust and mist filter utilizes the negative pressure of a blower to lift water from the equipment's tank, forming a circulating water curtain. Air containing dust particles, under the influence of a specific airflow pattern, first collides with the water curtain, trapping some of the viscous substances in the water. It then passes through the water curtain into the air-water channel, where it undergoes intense mixing with the water, completely washing away the particles. A portion of the water follows the airflow into the gas collection box, where air and water separate. The treated gas passes through a baffle plate and is then discharged into the atmosphere by an exhaust fan. The separated water collects in the gas collection box and flows into an overflow trough, overflowing onto a flooded plate to form another water curtain. This cycle repeats continuously, removing dust and mist. A special flocculant is added to the circulating water to alter the adhesion of the paint mist, causing it to float on the surface and agglomerate into clumps for easy cleaning. During operation, fresh water is continuously and automatically added to the tank, allowing for repeated water recycling without wastewater discharge or secondary environmental pollution.

[0065] Equipment Material:

[0066] The main body of the equipment is made of galvanized steel plate with powder coating on the outer surface; the water tank is made of 2mm thick stainless steel plate; the flashing plate is made of 1.5mm thick mirror stainless steel; the top cover plate and water collection tank are made of 2mm thick galvanized steel plate; the side wall plates, rear wall plates, air and water channels, water baffles, and flow guides are made of 1.2mm thick galvanized steel plate.

[0067] Technical parameters:

[0068] Smoke and dust filter:

[0069] External dimensions: 6000x1500x3055mm (L x W x H)

[0070] One fan is installed, and the motor is a variable frequency speed control motor with a speed range of 1480-2800 r / min;

[0071] The automatic water replenishment device uses a float valve for automatic water replenishment; material: stainless steel.

[0072] Exhaust ducts and chimneys:

[0073] Material: 1.2mm galvanized steel sheet; chimney height considered at 15 meters; frame material: Q235-A.

[0074] Control system components:

[0075] The control system consists of a control cabinet, control components, and cables and wires;

[0076] The control cabinet is the core of the equipment control system, and it is equipped with a power switch, equipment operation indicator lights, and fault indicator lights.

[0077] Control system functions:

[0078] Start-up and shutdown of the blower and motor overload protection; movement control of the mobile telescopic house;

[0079] Automatic limit protection control for mobile retractable houses, and control of explosion-proof lighting;

[0080] Protection system devices:

[0081] The system has two fault alarm modes: motor overload and limit switch failure.

[0082] Once a malfunction occurs, the control system will immediately and automatically disconnect the power supply to the relevant equipment to prevent accidents and will issue an audible and visual alarm.

[0083] Noise control in the workplace: The following measures will be taken to reduce noise and ensure that indoor noise is below 80 dBa. Low-noise fans will be used, and fan silencers will be installed. The fans will be installed in a fully enclosed, isolated manner, and vibration reduction measures will be taken to reduce external noise. The duct cross-sectional dimensions will be reasonable, and the duct velocity will not exceed 12 m / s.

[0084] Any matters not covered in this utility model are common knowledge.

[0085] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A wet dust removal device for cutting large and medium-sized castings, characterized in that: The wet dust removal device for cutting large and medium-sized castings includes a mobile telescopic house (1), a dust and mist filter (2), and an exhaust duct and chimney (3); Among them: the mobile telescopic house (1) includes an active frame, a driven frame, a telescopic house drive dual reducer, explosion-proof lighting, warning lights, a walking track and supporting components; The dust and mist filter (2) includes the main body of the equipment (4), water tank (5), flood plate (6), water collection tank (7), steam and water channel (8), water baffle (9), and backflow grid (10); The water tank (5) is welded to the main body of the equipment (4), the flood plate (6) is hung on the support, the water collection tank (7) is welded from galvanized plates, the steam-water channel (8) and the baffle plate (9) are welded from galvanized plates, and the backflow grid (10) is welded from galvanized plates.

2. The wet dust removal device for cutting large and medium-sized castings according to claim 1, characterized in that: The aforementioned wet dust removal device for cutting large and medium-sized castings also includes a mobile telescopic chamber, a dust and mist filter, a control device, flame-retardant and fire-resistant cloth, an exhaust fan, a float valve, an exhaust duct and chimney, a control system, and a protection system.

3. The wet dust removal device for cutting large and medium-sized castings according to claim 1, characterized in that: The aforementioned wet dust removal device for cutting large and medium-sized castings uses a bidirectional reducer and chain drive to drive the sprocket. The walking mechanism adopts a two-stage safety limit to ensure the safety and reliability of the walking mechanism.

4. The wet dust removal device for cutting large and medium-sized castings according to claim 1, characterized in that: The dust and mist filter is installed, including the main body of the equipment, water tank, flooding plate, water collection tank, air-water channel, baffle plate, and flow guide. The dust and mist filter uses the negative pressure of the blower to lift the water in the equipment water tank to form a circulating water curtain. The air containing dust first collides with the water curtain under the action of a certain airflow organization, and some of the sticky substances are trapped in the water. Then it passes through the water curtain and enters the air-water channel, where it is strongly stirred and mixed with the water in the channel, completely washing the particulate matter into the water.

5. The wet dust removal device for cutting large and medium-sized castings according to claim 1, characterized in that: The dust and fog processor is equipped with a heating device and is used when the indoor temperature is below zero degrees Celsius.

6. The wet dust removal device for cutting large and medium-sized castings according to claim 1, characterized in that: A switching valve is installed before the wet dust removal device used for cutting large and medium-sized castings. In summer, the dust is discharged naturally, while in winter, the dust is circulated in the pipeline to ensure the indoor temperature.

Images