Water curtain dust removal facility for large casting parts

Abstract

The utility model relates to a water curtain dust removal facility for large casting parts, which belongs to the field of environmental protection equipment and is characterized in that a coaming is mounted on the left of a base, support plates are respectively mounted on the front and back of the base, a water tank is mounted on the left of the two support plates, air holes are formed in the water tank, and a water outlet pipe is mounted at the bottom of the water tank in a downward extending manner; an air guide cover is installed on the left side face of the surrounding plate and connected with an air inlet of a centrifugal fan through an air outlet, an air outlet of the centrifugal fan is connected with an exhaust pipe, the front portion of the centrifugal fan is connected with a high-speed motor, and a water pump is installed on the filter screen and connected with a water tank through a water feeding pipe. Clear water in the water tank is sprayed to the external collodion through the small holes in the side wall of the water outlet pipe, water flow rapidly flows downwards along the outer wall of the collodion to form a water curtain, particles in smoke dust are absorbed by the water flow when the smoke dust penetrates through gaps of the water curtain, and the dust removal equipment which is large in water flow, stable in flow speed, free of water mist and small in water curtain gap is achieved.

Description

Technical Field

[0001] The utility model discloses a large-scale casting water curtain dust removal facility, which belongs to the field of environmental protection equipment and relates to dust removal equipment during the pouring of large-scale castings. Background Art

[0002] Casting is the process of pouring metal into a sandbox after it is melted at high temperature. After the metal solution enters the sandbox, it quickly melts the lost foam. The metal solution flows rapidly along the cavity of the melted lost foam until the cavity is filled. This process is called casting. However, a large amount of smoke and dust will be generated during the casting process. In the early days, gypsum filters or nylon filters were used to filter the smoke and dust. Since the gypsum filters or nylon filters had poor filtering effects and high costs, water curtain dust removal with low prices and better effects was later adopted. There are two main types of water curtain dust removal on the market. One is to form a water curtain with high pressure spray to absorb smoke and dust in the air. This method is simple and effective, but smoke and dust will float around with the water mist and pollute the ground near the factory. The other is a waterfall-type water curtain dust removal. When the water flows downward, it takes away the smoke and dust. However, as the centrifugal fan draws air, the water curtain will shake left and right under the action of the airflow to form gaps. Some smoke and dust cannot be absorbed by the water curtain and are discharged to the outside with the airflow to pollute the air. Therefore, there is a need for a dust removal equipment with large water flow, stable flow rate, no water mist, and small gaps in the water curtain.

[0003] Application number: 2022229916868 A water mist and water curtain dust removal desk, comprising a desk body, a fan and an atomizing dust removal device; the desk body is provided with a work surface, and an array of exhaust holes is provided on the surface of the work surface; an air duct and an atomizing dust removal device are provided in the desk body, and the air duct is sealed to connect the exhaust holes and the atomizing dust removal device; a fan is provided in the air duct. An array of exhaust holes is provided on the surface of the work table, and wood chips generated during woodworking fall into the exhaust holes under the action of gravity and wind, which ensures the cleanliness of the work surface and reduces wood chips in the air. The louvered exhaust ports on the side are used for multi-directional exhaust to improve the dust removal efficiency; the fan drives the air flow, and the gas with dust and wood chips enters the atomizing dust removal device. The dust in the air is combined with the water mist and water flow to achieve the dust removal effect. No filter element is used, which reduces wind noise and is suitable for classroom teaching environment.

[0004] Application number: 2023218535439 Side-inlet and top-outlet intelligent water curtain dust removal system, including a dust removal box, an air inlet and a spray mechanism, the right side of the dust removal box is provided with an air inlet, the top left side of the dust removal box is provided with an air outlet, the spray mechanism is arranged on the left side of the dust removal box, the bottoms of the front and rear sides of the dust removal box are connected with slag boxes, the bottoms of the slag boxes on both sides are connected through a sewage pipe, the ends of the sewage pipes extend to the front end of the box body and are provided with filters, the front end of the dust removal box is evenly arranged with box doors, and the box doors are connected to the dust removal box by hinges. After spraying, the smoke and dust particles fall into the slag box at the bottom of the dust removal box along with the water droplets, and the smoke and dust particle residues remain in the slag box. The water flows out through the sewage pipe connected to the slag box. The water flow can be filtered twice by the filter to reduce the smoke and dust residue for easy recycling. When the interior of the dust removal box is damaged, the interior of the dust removal box can be inspected and repaired by opening the box door.

[0005] The above-mentioned water mist and water curtain dust removal desk adopts an atomizing dust removal device to atomize water, and then mixes it with air and dust to achieve the dust removal effect, but the water mist and dust will be sucked out to the outside by the fan and pollute the nearby ground; the above-mentioned side-inlet and top-outlet intelligent water curtain dust removal system adopts a spray mechanism to remove smoke and dust, that is, the water mist and water droplets sprayed by the spray mechanism absorb the particles in the smoke and dust, and then the smoke and dust particles are carried into the slag box by the water droplets, but in this process the water mist will also carry away some smoke and dust particles and float to the outside with the airflow to pollute the ground. Utility Model Content

[0006] The utility model provides a large casting water curtain dust removal facility, which provides a hollow L-shaped frame, a hollow rectangular parallelepiped water tank is installed above the frame, an array of water outlet pipes is installed downward in a triangular shape at the bottom of the water tank, and the outside of the water outlet pipes is wrapped with rubber cotton, and the clean water inside the water tank is sprayed onto the rubber cotton outside through the small holes on the side wall of the water outlet pipe, and the water flows downward rapidly along the outer wall of the rubber cotton to form a water curtain, and the particles inside are absorbed by the water flow when the smoke and dust pass through the gap of the water curtain.

[0007] The technical scheme of the utility model is as follows: a large casting water curtain dust removal facility comprises a base 1, a panel 13 is installed on the left side of the base 1, a support plate 2 is installed on the front and rear of the base 1, a water baffle 3 is installed on the right side of the base 1, the base 1, the support plate 2, the water baffle 3, and the panel 13 are connected to each other to form a frame, a water tank 4 is installed on the left side of the two support plates 2, a vent hole 5 is arranged on the water tank 4, a water outlet pipe 9 is installed on the bottom of the water tank 4 extending downward, and an air guide hood 14 is installed on the left side of the panel 13, and the air guide hood 14 is connected to the centrifugal fan through the air outlet 15 6, the air inlet of the centrifugal fan 6 is connected to the exhaust pipe 7, the front of the centrifugal fan 6 is connected to the high-speed motor 8, the filter screen 10 is installed on the base 1, and a water pump 11 is installed on the filter screen 10, and the water pump 11 is connected to the water tank 4 through the upper water pipe 12. The water tank 4, the air vent 5, the centrifugal fan 6, the exhaust pipe 7, the high-speed motor 8, the water outlet pipe 9, the filter screen 10, the water pump 11, the upper water pipe 12, the wind guide cover 14, and the air outlet 15 are interconnected to form a water curtain dust removal facility. The air switch 16 is installed on the power distribution cabinet, and the air switch 16 is connected to the high-speed motor 8 and the water pump 11 through the power cord.

[0008] Furthermore, the base 1 is in the shape of a rectangular parallelepiped, the support plates 2 installed horizontally in the front and rear directions are L-shaped and have a height greater than 2.5m, the enclosure 13 installed vertically on the left side of the base 1 is rectangular and has a height equal to that of the left side of the support plate 2, and the water retaining plate 3 installed vertically on the right side of the base 1 is in the shape of a long strip and has a height of 30-60cm.

[0009] Furthermore, a rectangular opening is longitudinally provided above the enclosure 13 , and an air guide hood 14 in the shape of a hollow triangle is installed on the left side of the opening. The right side of the air guide hood 14 is connected to the opening, and an air outlet 15 is provided in the center of the left side of the air guide hood 14 .

[0010] Furthermore, the water tank 4 is a hollow rectangular parallelepiped made of stainless steel, and 2-4 water discharge holes are longitudinally arranged on the top of the bottom plate. Each water discharge hole has 20-40 holes, and the interval between every two water holes is 3-8 cm. The water holes between every two rows are arranged in a herringbone shape.

[0011] Furthermore, the water outlet pipe 9 is cylindrical and made of stainless steel and is vertically installed below the water tank 4 . The top of the water outlet pipe 9 is connected to the water outlet hole at the bottom of the water tank 4 , and the bottom of the water outlet pipe 9 is connected to the top of the base 1 .

[0012] Furthermore, the water outlet pipe 9 has a diameter of 4-6 cm, and water spray holes with a diameter of 0.2-0.4 cm are evenly arranged on the water outlet pipe 9. The outside of the water outlet pipe 9 is entirely wrapped with 0.5-1 cm thick rubber cotton.

[0013] Furthermore, the filter screen 10 is a hollow disc made of stainless steel, with a diameter greater than 80 cm and a height of 15-25 cm. Meshes with a diameter of 0.1-0.2 cm are densely arranged on the side of the filter screen 10, and a water outlet is arranged on the top of the filter screen 10.

[0014] Furthermore, the water inlet pipe of the water pump 11 extends to the interior of the filter screen 10 through the water outlet of the filter screen 10 .

[0015] Beneficial effects: There are two main types of existing water curtain dust removal. One is that high-pressure spray forms a water curtain to absorb smoke and dust in the air, but the smoke and dust will float around with the water mist and pollute the ground near the factory. The other is waterfall-type water curtain dust removal. When the water flows downward, it takes away the smoke and dust. However, with the suction of the centrifugal fan, the water curtain will shake left and right under the action of the airflow to form gaps. Some smoke and dust cannot be absorbed by the water curtain and are discharged to the outside with the airflow to pollute the air.

[0016] The water curtain dust removal facility for large castings adopts a hollow L-shaped frame. A hollow rectangular water tank is installed on the top of the frame. An array of water outlet pipes is installed in a herringbone shape at the bottom of the water tank. The outside of the water outlet pipes is wrapped with rubber cotton. The clean water inside the water tank is sprayed onto the rubber cotton outside through the small holes on the side wall of the water outlet pipe. The water flows downward rapidly along the outer wall of the rubber cotton to form a water curtain. When the smoke and dust pass through the gaps in the water curtain, the particles inside are absorbed by the water flow, realizing a dust removal equipment with large water flow, stable flow rate, no water mist, and small gaps in the water curtain. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a 45° front view of the water curtain dust removal facility for large castings from the front to the right;

[0018] Figure 2 This is a schematic diagram of the structure of the water tank, air vent, water outlet pipe, filter, water pump, and water supply pipe at a 45° angle to the right in front direction;

[0019] Figure 3 It is a schematic diagram of the left side structure of the enclosure, air guide cover and air outlet;

[0020] Figure 4 This is a schematic diagram of connecting the air switch to the high-speed motor and water pump through the power line;

[0021] In the figure, 1, base; 2, support plate; 3, water retaining plate; 4, water tank; 5, air vent; 6, centrifugal fan (exhaust> 0.5m 3 / S); 7. Exhaust duct; 8. High-speed motor (AC380V / 4-8kw); 9. Water outlet pipe; 10. Filter; 11. Water pump (AC380V / 1-3kw); 12. Water supply pipe; 13. Enclosure; 14. Wind guide hood; 15. Air outlet; 16. Air switch (AC380V / 60A). DETAILED DESCRIPTION

[0022] Combined with the accompanying drawings and the accompanying drawings, the structure and shape of the utility model are described in detail:

[0023] Embodiment 1

[0024] See attached Figure 1-4 The water curtain dust removal facility for large castings includes a base 1, the base 1 is used to install a support plate 2, a water baffle 3 and a panel 13, the panel 13 is installed on the left side of the base 1, the panel 13 is used to install an air guide hood 14 and guide the airflow, the front and rear of the base 1 are respectively installed with support plates 2, the support plate 2 is used to install a water tank 4 and guide the airflow, the right side of the base 1 is installed with a water baffle 3, the water baffle 3 is used to block the water on the base 1 to prevent overflow, the base 1, the support plate 2, the water baffle 3, the panel The boards 13 are connected to each other to form a frame, a water tank 4 is installed on the left side of the two support boards 2, the water tank 4 is used to store clean water, a vent hole 5 is set on the water tank 4, the vent hole 5 is used to discharge the air in the water tank 4, the bottom of the water tank 4 is extended downward to install a water outlet pipe 9, the water outlet pipe 9 is used to guide the clean water in the water tank 4, the water outlet pipe 9 is wrapped with cotton outside to prevent the water sprayed from the water outlet pipe 9 from generating water mist, and an air guide cover 14 is installed on the left side of the enclosure 13, the air guide cover 14 is used to guide the air around the water outlet pipe 9 The surrounding airflow is introduced into the centrifugal fan 6, the air guide cover 14 is connected to the air inlet of the centrifugal fan 6 through the air outlet 15, the air outlet 15 is used to connect the centrifugal fan 6, the air outlet of the centrifugal fan 6 is connected to the exhaust pipe 7, the centrifugal fan 6 is used to extract the air inside the frame, the exhaust pipe 7 is used to discharge the air extracted by the centrifugal fan 6 to the outside, the front of the centrifugal fan 6 is connected to the high-speed motor 8, the high-speed motor 8 is used to drive the centrifugal fan to rotate at a high speed to generate centrifugal force, the filter 10 is installed on the base 1, and the filter 10 A water pump 11 is installed on the top, the filter 10 is used to filter smoke particles, and the water pump 11 is used to pump the water on the base 1 into the water tank 4. The water pump 11 is connected to the water tank 4 through an upper water pipe 12. The water tank 4, air vents 5, centrifugal fans 6, exhaust pipes 7, high-speed motors 8, water outlet pipes 9, filter screens 10, water pumps 11, upper water pipes 12, wind guide covers 14, and air outlets 15 are interconnected to form a water curtain dust removal facility. An air switch 16 is installed on the power distribution cabinet, and the air switch 16 is connected to the high-speed motor 8 and the water pump 11 through a power cord.

[0025] See attached Figure 1 and 3The base 1 is in the shape of a rectangular parallelepiped, the support plates 2 installed horizontally on the front and rear sides are L-shaped and have a height greater than 2.5m, the enclosure 13 installed longitudinally on the left side of the base 1 is rectangular and has a height equal to that of the left side of the support plate 2, and the water retaining plate 3 installed longitudinally on the right side of the base 1 is in the shape of a strip and has a height of 30-60cm.

[0026] See attached Figure 1 and 3 A rectangular opening is longitudinally arranged above the enclosure 13, and an air guide cover 14 is installed on the left side of the opening and is in the shape of a hollow triangle. The right side of the air guide cover 14 is connected to the opening, and an air outlet 15 is arranged in the center of the left side of the air guide cover 14.

[0027] See attached Figure 1 and 2 The water tank 4 is a hollow rectangular parallelepiped made of stainless steel, and 2-4 water discharge holes are longitudinally arranged on the bottom plate. Each water discharge hole has 20-40 holes, and the interval between every two water discharge holes is 3-8 cm. The arrangement shape of the water discharge holes between every two rows is a herringbone.

[0028] See attached Figure 1 and 2 The water outlet pipe 9 is cylindrical and made of stainless steel and is vertically installed below the water tank 4. The top of the water outlet pipe 9 is connected to the water outlet hole at the bottom of the water tank 4, and the bottom of the water outlet pipe 9 is connected to the top of the base 1.

[0029] See attached Figure 1 and 2 The water outlet pipe 9 has a diameter of 4-6 cm, and water spray holes with a diameter of 0.2-0.4 cm are evenly arranged on it. The outside of the water outlet pipe 9 is wrapped with 0.5-1 cm thick cotton.

[0030] See attached Figure 2 The filter screen 10 is a hollow disc made of stainless steel with a diameter greater than 80 cm and a height of 15-25 cm. The side of the filter screen 10 is densely provided with meshes with a diameter of 0.1-0.2 cm, and a water outlet is provided on the top of the filter screen 10.

[0031] See attached Figure 2 The water inlet pipe of the water pump 11 extends to the interior of the filter screen 10 through the water outlet of the filter screen 10 .

[0032] Combined with the above simple description of the use of the water curtain dust removal facility for large castings, the worker moves the sand box to the right side above the base 1 through the crane, and then injects an appropriate amount of clean water into the base 1. After the casting pot is hoisted onto the sand box, the worker turns on the air switch 16, and the high-speed motor 8 drives the centrifugal fan to rotate at high speed to generate centrifugal force to suck the air inside the frame and then press it into the exhaust pipe 7. The water pump 11 rotates rapidly to pump the clean water in the filter 10 into the water tank 4. The clean water in the water tank 4 enters the inside of the water outlet pipe 9 through the water outlet hole. The clean water in the water outlet pipe 9 is sprayed onto the external rubber cotton through the water spray hole. After the clean water penetrates the rubber cotton, it flows down along the outside of the rubber cotton to the top of the base 1, and the cycle continues. At this time, the worker operates the casting pot to slowly pour the molten metal into the sand box. The molten metal flows into the sand box through the pouring port to melt the lost foam and fill the inner cavity of the lost foam. A large amount of smoke will be generated while melting the lost foam. The smoke will be sprayed out of the sand box through the pouring port or the exhaust port, and then be brought into the gap between the water outlet pipes 9 by the airflow flowing on the base 1. After the smoke contacts the clean water on the surface of the rubber cotton, the clean water absorbs the particles in the smoke and flows to the top of the base 1. The blue smoke absorbed by the clean water enters the inside of the centrifugal fan 6 with the airflow, and then is pressed out of the room by the centrifugal fan. After the pouring is completed and the smoke is gone, turn off the air switch 16.

Claims

1. Large casting water curtain dust removal facilities, including base, characterized by A coaming is installed on the left side of the base, support plates are installed at the front and back of the base respectively, a water baffle is installed on the right side of the base, the base, the support plate, the water baffle and the coaming are connected to each other to form a frame, a water tank is installed on the left side of the two support plates, an air vent is arranged on the water tank, a water outlet pipe is installed on the bottom of the water tank extending downward, an air guide cover is installed on the left side of the coaming, the air guide cover is connected to the air inlet of the centrifugal fan through the air outlet, the air outlet of the centrifugal fan is connected to the exhaust pipe, the front of the centrifugal fan is connected to the high-speed motor, the filter is installed on the base, a water pump is installed on the filter, the water pump is connected to the water tank through the upper water pipe, the water tank, the air vent, the centrifugal fan, the exhaust pipe, the high-speed motor, the water outlet pipe, the filter, the water pump, the upper water pipe, the air guide cover and the air outlet are connected to each other to form a water curtain dust removal facility, and the air switch is installed on the power distribution cabinet, and the air switch is connected to the high-speed motor and the water pump through the power cord.

2. According to claim 1, the large casting water curtain dust removal facility is characterized in that The base is in the shape of a rectangular block, and the front and rear horizontally installed support plates are L-shaped and greater than 2.5m in height. The left longitudinally installed enclosure on the base is rectangular and has the same height as the left side of the support plate. The right longitudinally installed water retaining plate on the base is in the shape of a long strip and is 30-60cm in height.

3. The large casting water curtain dust removal facility according to claim 1 or 2, characterized in that A rectangular opening is longitudinally arranged above the enclosure, an air guide hood in the shape of a hollow triangle is installed on the left side of the opening, the right side of the air guide hood is connected with the opening, and an air outlet is arranged in the center of the left side of the air guide hood.

4. The large casting water curtain dust removal facility according to claim 1 is characterized in that The water tank is a hollow rectangular parallelepiped made of stainless steel, with 2-4 drainage holes arranged longitudinally on the bottom plate, 20-40 drainage holes in each row, 3-8 cm between every two drainage holes, and the drainage holes between every two rows arranged in a herringbone shape.

5. The large casting water curtain dust removal facility according to claim 1 or 4, characterized in that The water outlet pipe is cylindrical and made of stainless steel and is vertically installed below the water tank. The top of the water outlet pipe is connected to the water outlet hole at the bottom of the water tank, and the bottom of the water outlet pipe is connected to the top of the base.

6. The large casting water curtain dust removal facility according to claim 1 is characterized in that The diameter of the water outlet pipe is 4-6cm, and water spray holes with a diameter of 0.2-0.4cm are evenly arranged on the water outlet pipe. The outside of the water outlet pipe is wrapped with 0.5-1cm thick rubber cotton as a whole.

7. The large casting water curtain dust removal facility according to claim 1 is characterized in that The filter is a hollow disc made of stainless steel, with a diameter greater than 80 cm and a height of 15-25 cm. Meshes with a diameter of 0.1-0.2 cm are densely arranged on the side of the filter, and a water outlet is arranged on the top of the filter.

8. The large casting water curtain dust removal facility according to claim 1 is characterized in that The water inlet pipe of the water pump extends to the interior of the filter screen through the water outlet of the filter screen.

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