Flue gas filtering device for lost foam casting pouring

Abstract

The utility model discloses a smoke filtering device for lost foam casting pouring, which comprises a bottom plate, a storage battery is fixedly mounted at the bottom of the bottom plate, an electric push rod is fixedly mounted at the top of the bottom plate, a fixed plate is fixedly connected to the push rod end of the electric push rod, a smoke suction hood is connected to the fixed plate in a penetrating manner, and a smoke suction nozzle is arranged on the smoke suction hood. The top of the bottom plate is fixedly connected with a first box body and a second box body, the opposite sides of the first box body and the second box body are fixedly connected, and a centrifugal fan is arranged to drive flue gas to enter the first box body to be preliminarily filtered and purified through a plurality of arc-shaped filter screen plates; the flue gas passes through a plurality of filter elements in the second box body for secondary filtration and purification, and the flue gas subjected to double filtration and purification is conveyed into water in the second box body through a gas guide pipe for final water purification, so that the flue gas can be discharged after being purified for multiple times, and the flue gas filtration effect of the device is further effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of smoke filtering and purifying equipment, in particular to a smoke filtering device used for lost foam casting. Background Art

[0002] Lost foam casting is a new casting method for producing castings by using EPS polymer materials to make a solid mold with the same structure and size as the parts to be cast. After being dipped in refractory coating and dried, it is buried in dry quartz sand and shaped by three-dimensional vibration. The molten metal liquid is poured into the casting sand box under negative pressure, so that the polymer material model is heated and gasified and extracted, and then replaced by liquid metal and cooled and solidified to form a one-time molding casting new process. During the lost foam vacuum casting process, the foam model undergoes liquefaction and combustion under the action of high-temperature molten metal, generating a large amount of black smoke and fine dust, but the fine dust and black smoke cannot be directly discharged into the atmosphere and need to be processed by a dust collector.

[0003] After searching, the patent with patent application number 202320785263.2 discloses a fume filtering device for lost foam casting, including a fume hood, a dust collecting pipe, a water tank and a pump body, the upper end of the fume hood is connected with a bent pipe, one end of the dust collecting pipe is fixed with a connecting pipe, a rotating flange bearing is installed between the bent pipe and the connecting pipe, a filter cylinder is installed inside the dust collecting pipe, a drain pipe is connected between the dust collecting pipe and the water tank, the water inlet and the water outlet of the pump body are respectively installed with a water inlet pipe and a water outlet pipe, the other end of the water inlet pipe is connected with the water tank, the other end of the water outlet pipe is connected with a spray pipe, the outer side of the spray pipe is connected with several branch pipes, the lower ends of several branch pipes extend through and extend to the interior of the dust collecting pipe, and the lower ends of several branch pipes are installed with spray heads. The above patent also has the following shortcomings: although the above existing device purifies the flue gas by water spraying, its purification method is relatively simple, which will reduce the flue gas filtering effect of the device. Therefore, a flue gas filtering device for lost foam casting is proposed to optimize and solve the above problems. Utility Model Content

[0004] The utility model aims to provide a fume filtering device for lost foam casting to solve the problems raised in the above background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A smoke filtering device for lost foam casting, comprising a bottom plate, a battery is fixedly installed at the bottom of the bottom plate, an electric push rod is fixedly installed at the top of the bottom plate, a push rod end of the electric push rod is fixedly connected to a fixing plate, a smoking hood is connected through the fixing plate, a first box body and a second box body are fixedly connected to the top of the bottom plate respectively, the first box body and the second box body are fixedly connected at opposite sides, a push-pull handle is fixedly connected to the outside of the second box body, a switch is fixedly installed on the outside of the second box body, a centrifugal fan is fixedly installed on the top of the second box body, and a collecting fan is placed at the bottom of the inner side of the first box body. A collecting trough, a plurality of arc-shaped filter screens are fixedly connected at equal distances on the inner wall of the first box, a transverse plate is fixedly connected to the inner wall of the second box, an air guide tube is symmetrically connected through the transverse plate, a plurality of spring expanders are fixedly connected at equal distances on the top of the transverse plate, one end of each of the spring expanders is fixedly connected to a screen, a five-way pipe is fixedly connected to the top of the inner side of the second box, four ends of the five-way pipe are respectively fixedly connected to the opposite sides of the screen, four groups of limiting sleeves are respectively mounted between the four groups of limiting sleeves, and a first box door and a second box door are respectively arranged on the front surfaces of the first box body and the second box body.

[0007] As a further solution of the utility model: a running wheel is fixedly connected to the bottom of the base plate, a locking structure is arranged on the running wheel, and a through hole for the smoking hood to penetrate and connect is opened on the fixed plate.

[0008] As a further solution of the utility model: the horizontal plate is provided with a through hole for the air guide pipe to pass through and connect, and the outer side of the mesh plate is in contact with the inner wall of the second box and is slidably connected.

[0009] As a further solution of the utility model: the other end of the five-way pipe vertically penetrates the second box body and is fixedly connected to the air outlet of the centrifugal fan through a conduit; the second box body is provided with a through hole for the five-way pipe to pass through and connect; the air inlet of the centrifugal fan is fixedly connected to the air outlet of the first box body through the conduit; the air inlet of the first box body is fixedly connected to the air outlet of the smoke hood through a telescopic hose; the air outlet of the second box body is fixedly connected with an air outlet pipe; the water inlet of the second box body is fixedly connected with a water inlet pipe, a valve is provided on the water inlet pipe, and water is provided at the bottom inner side of the second box body.

[0010] As a further solution of the utility model: the first box door and the second box door are hinged to the front surfaces of the first box body and the second box body respectively, and the first box door and the second box door are respectively provided with handles.

[0011] As a further solution of the utility model: the electric push rod and the centrifugal fan are electrically connected to a switch through a wire, and the switch is electrically connected to a battery through a wire.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] A centrifugal fan is set up to drive the flue gas into the first box body to pass through multiple arc-shaped filter plates for preliminary filtration and purification, and then pass through multiple filter elements in the second box body for secondary filtration and purification. The flue gas after double filtration and purification is then transported to the water inside the second box body through an air duct for final water purification, so that the flue gas can be purified multiple times before being discharged, further effectively improving the filtering effect of the device on the flue gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The figure is a schematic diagram of the structure of a fume filtration device used for lost foam casting.

[0015] Figure 2 This is a schematic diagram of the partial structure of a smoke filtering device used for lost foam casting.

[0016] Figure 3 A front view of a fume filtration device for lost foam casting.

[0017] As shown in the figure: base plate 1, battery 2, electric push rod 3, fixing plate 4, smoking hood 5, first box body 6, second box body 7, switch 8, centrifugal fan 9, collecting trough 10, arc filter plate 11, cross plate 12, air guide pipe 13, spring retractor 14, mesh plate 15, five-way pipe 16, filter element 17, first box door 18 and second box door 19. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] See also Figures 1 to 3In the embodiment of the utility model, a smoke filtering device for lost foam casting includes a bottom plate 1, a battery 2, an electric push rod 3, a fixing plate 4, a smoking hood 5, a first box body 6, a second box body 7, a switch 8, a centrifugal fan 9, a collecting tank 10, an arc filter plate 11, a cross plate 12, an air guide 13, a spring retractor 14, a mesh plate 15, a five-way pipe 16, a filter element 17, a first box door 18 and a second box door 19. The bottom of the bottom plate 1 is fixedly connected to a walking wheel, and a locking structure is provided on the walking wheel. The bottom of the bottom plate 1 is fixedly installed with a battery 2, and the top of the bottom plate 1 is fixedly installed with an electric push rod 3. The electric push rod 3 is fixedly installed on the top of the bottom plate 1. The push rod end of the rod 3 is fixedly connected to a fixing plate 4, a smoking hood 5 is penetrated and connected on the fixing plate 4, a through hole for the smoking hood 5 to penetrate and connect is opened on the fixing plate 4, a first box body 6 and a second box body 7 are respectively fixedly connected to the top of the bottom plate 1, the opposite sides of the first box body 6 and the second box body 7 are fixedly connected, a push-pull handle is fixedly connected to the outside of the second box body 7, a switch 8 is fixedly installed on the outside of the second box body 7, a centrifugal fan 9 is fixedly installed on the top of the second box body 7, a collecting tank 10 is placed on the inner bottom of the first box body 6, and a plurality of arc-shaped filter screens 11 are fixedly connected to the inner wall of the first box body 6 at equal distances.

[0020] A transverse plate 12 is fixedly connected to the inner wall of the second box body 7, and an air guide pipe 13 is symmetrically connected to the transverse plate 12. A through hole for the air guide pipe 13 to pass through is opened on the transverse plate 12, and a plurality of spring retractors 14 are fixedly connected to the top of the transverse plate 12 at equal distances, and a mesh plate 15 is fixedly connected to one end of the plurality of spring retractors 14. The outer side of the mesh plate 15 is in contact with the inner wall of the second box body 7 and is slidably connected. A five-way pipe 16 is fixedly connected to the top of the inner side of the second box body 7, and four groups of limiting sleeves are respectively fixedly connected to the four ends of the five-way pipe 16 and the opposite sides of the mesh plate 15, and four filter elements 17 are respectively sleeved between the four groups of limiting sleeves. The other end of the five-way pipe 16 vertically penetrates the second box body 7 and is fixedly connected to the air outlet of the centrifugal fan 9 through a conduit. The second box body 7 is provided with a through hole for the five-way pipe 1 6 is connected through the through hole, the air inlet of the centrifugal fan 9 is fixedly connected to the air outlet of the first box body 6 through a conduit, the air inlet of the first box body 6 is fixedly connected to the air outlet of the smoking hood 5 through a telescopic hose, the air outlet of the second box body 7 is fixedly connected with an air outlet pipe, the water inlet of the second box body 7 is fixedly connected with a water inlet pipe, a valve is provided on the water inlet pipe, water is provided at the bottom of the inner side of the second box body 7, the front surfaces of the first box body 6 and the second box body 7 are respectively provided with a first box door 18 and a second box door 19, the first box door 18 and the second box door 19 are respectively hinged on the front surfaces of the first box body 6 and the second box body 7, and the first box door 18 and the second box door 19 are respectively provided with handles, the electric push rod 3 and the centrifugal fan 9 are electrically connected to the switch 8 through a wire, and the switch 8 is electrically connected to the battery 2 through a wire.

[0021] The working principle of the utility model is:

[0022] When it is necessary to use the smoke filtering device for lost foam casting, the personnel first move the device to the vicinity of the smoke exhaust port of the lost foam casting equipment through the walking wheels, and then limit the position through the locking structure on the walking wheels, further open the valve on the water inlet pipe to pour an appropriate amount of water into the second box 7, further connect the switch 8 with the battery 2, further start the electric push rod 3 to drive the smoking hood 5 on the fixed plate 4 to move up to the smoke exhaust port of the lost foam casting equipment, and further start the centrifugal fan 9 to exhaust air in the first box 6, so that negative pressure is generated inside the first box 6, and further the smoke generated by the lost foam casting equipment will pass through the smoking hood 5 and the telescopic hose After being introduced into the first box body 6, the flue gas will further pass through multiple arc-shaped filter screens 11 for preliminary filtering and purification, and larger impurities in the flue gas will also fall into the collecting tank 10 for collection, and then the flue gas after preliminary filtration is transported to the filter element 17 through the conduit and the five-way pipe 16 for secondary filtration and purification, and the flue gas after double filtration and purification is then transported to the water inside the second box body 7 through the air duct 13 for final water purification, and the gas after multiple filtrations is finally discharged through the exhaust pipe. Finally, the personnel can clean the first box body 6 and the second box body 7 by opening the first box door 18 and the second box 19, and take out the collection tank 10 at the same time.

[0023] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A fume filtration device for lost foam casting, comprising a bottom plate (1), characterized in that: A battery (2) is fixedly installed at the bottom of the base plate (1), an electric push rod (3) is fixedly installed at the top of the base plate (1), a push rod end of the electric push rod (3) is fixedly connected to a fixing plate (4), a smoking hood (5) is connected through the fixing plate (4), a first box (6) and a second box (7) are respectively fixedly connected to the top of the base plate (1), the first box (6) and the second box (7) are fixedly connected at opposite sides, a push-pull handle is fixedly connected to the outside of the second box (7), a switch (8) is fixedly installed on the outside of the second box (7), a centrifugal fan (9) is fixedly installed on the top of the second box (7), a collecting tank (10) is placed at the bottom of the inner side of the first box (6), and the inner wall of the first box (6) is equidistantly connected to the first box (6). A plurality of arc-shaped filter screens (11) are fixedly connected thereto; a transverse plate (12) is fixedly connected to the inner wall of the second box body (7); an air guide tube (13) is symmetrically connected to and penetrates through the transverse plate (12); a plurality of spring retractors (14) are fixedly connected to the top of the transverse plate (12) at equal distances; one end of each of the plurality of spring retractors (14) is fixedly connected to a screen plate (15); a five-way pipe (16) is fixedly connected to the top of the inner side of the second box body (7); four ends of the five-way pipe (16) are respectively fixedly connected to four groups of limiting sleeves at the opposite sides of the screen plate (15); four filter cartridges (17) are respectively sleeved between the four groups of limiting sleeves; a first box door (18) and a second box door (19) are respectively provided on the front surfaces of the first box body (6) and the second box body (7).

2. The smoke filtering device for lost foam casting according to claim 1 is characterized in that: The bottom of the base plate (1) is fixedly connected to a running wheel, on which a locking structure is provided, and the fixing plate (4) is provided with a through hole for the smoking hood (5) to penetrate and connect.

3. The smoke filtering device for lost foam casting according to claim 1 is characterized in that: The transverse plate (12) is provided with a through hole for the air guide pipe (13) to pass through and connect, and the outer side of the mesh plate (15) is in contact with the inner wall of the second box body (7) and is slidably connected.

4. The smoke filtering device for lost foam casting according to claim 1 is characterized in that: The other end of the five-way pipe (16) vertically penetrates the second box (7) and is fixedly connected to the air outlet of the centrifugal fan (9) through a conduit. The second box (7) is provided with a through hole for the five-way pipe (16) to penetrate and connect. The air inlet of the centrifugal fan (9) is fixedly connected to the air outlet of the first box (6) through a conduit. The air inlet of the first box (6) is fixedly connected to the air outlet of the smoking hood (5) through a telescopic hose. The air outlet of the second box (7) is fixedly connected to an air outlet pipe. The water inlet of the second box (7) is fixedly connected to a water inlet pipe. A valve is provided on the water inlet pipe. Water is provided at the bottom of the inner side of the second box (7).

5. The smoke filtering device for lost foam casting according to claim 1, characterized in that: The first box door (18) and the second box door (19) are respectively hinged on the front surfaces of the first box body (6) and the second box body (7), and the first box door (18) and the second box door (19) are respectively provided with handles.

6. The smoke filtering device for lost foam casting according to claim 1, characterized in that: The electric push rod (3) and the centrifugal fan (9) are electrically connected to a switch (8) via a wire, and the switch (8) is electrically connected to a storage battery (2) via a wire.

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