Flue gas purification device for foundry furnace
By adopting the dual filtration technology of water mist and filter in the casting furnace flue gas purification device, the problems of easy damage and short service life of the filter in the existing technology are solved, and efficient flue gas purification and cost reduction are achieved.
Patent Information
- Application Number
- CN202421029422.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-13
- Publication Date
- 2025-01-21
- Estimated Expiration
- 2034-05-13
AI Technical Summary
When using filters to purify the flue gas of the casting furnace, the filters are damaged and have short service life due to high flue gas temperature and high dust. They need to be replaced frequently, which increases production costs and environmental pollution.
Water mist and filter screen are used to double filter the flue gas of the casting furnace. Water mist is sprayed through the spray device to reduce the temperature of the flue gas, and the flue gas is further purified through a multi-layer filter screen.
Effectively reduce flue gas temperature, improve purification efficiency, extend the service life of the filter, reduce the number of replacements, protect the environment, and reduce production costs.
Smart Images
Figure CN222378818U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the field of dust removal and purification equipment, and in particular relates to a fume purification device for a casting furnace. Background Art
[0002] Casting is a method of pouring liquid metal into a casting cavity that matches the shape of the part, and then waiting for it to cool and solidify to obtain a part or blank.
[0003] The casting furnace is a common equipment in the metal casting process. A large amount of smoke will be generated during the metal melting process. The smoke contains a large amount of dust, which not only affects the health of the workers, but also causes serious pollution to the environment.
[0004] In the prior art, the fume generated by casting is mostly filtered by a filter. When using the filter, the temperature of the fume is high, which can easily cause the filter to be damaged. Also, because the fume contains a lot of dust, the service life of the filter is short when in use. The only solution is to frequently replace the filter, which not only causes waste, but also increases production costs. Utility Model Content
[0005] In view of the problems existing in the background technology, the utility model provides a fume purification device for a casting furnace, which uses water mist and a filter to perform double filtration on the casting fume, which can effectively reduce the fume temperature, protect the atmospheric environment, and reduce production costs.
[0006] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a fume purification device for a casting furnace, comprising a casting furnace, an air intake hood, a spray device and a filter, wherein an air intake hood is arranged above the casting furnace, and an air outlet of the air intake hood is connected with an air inlet of a first pipe; the air outlet of the first pipe is connected with an air inlet of a second pipe through a low-pressure pump; the air outlet of the second pipe is connected with an inlet of a collecting pipe, and a spray device is arranged at an upper end of the collecting pipe; the air outlet of the collecting pipe is connected with an air inlet of a third pipe; the air outlet of the third pipe is connected with an air inlet of a filter; the air outlet of the filter is connected with an air inlet of a fourth pipe; an air outlet mask is arranged at the air outlet of the fourth pipe.
[0007] A collecting trough is provided at the lower end of the collecting pipe, the horizontal height of the left end of the collecting trough is higher than the horizontal height of the right end of the collecting trough, and a slag discharge valve is provided at the right end of the collecting trough.
[0008] A plurality of filter screens are arranged in the filter.
[0009] The spray device includes a protective cover and a spray head. The protective cover is a square structure, and the lower end surface of the protective cover is open and connected to the inside of the collecting pipe; the spray heads are evenly distributed on the top surface of the protective cover, and the spray heads are connected to an external water supply device.
[0010] The second pipeline is connected to the collecting pipe through an elbow.
[0011] The beneficial effects of the utility model are as follows: the utility model provides a fume purification device for a casting furnace, which uses water mist and a filter to perform double filtration on the casting fume, which can effectively reduce the fume temperature, improve the purification efficiency, greatly reduce the number of times the filter needs to be replaced, protect the atmospheric environment, and reduce production costs. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 It is a structural schematic diagram of the utility model.
[0013] Figure 2 This is a cross-sectional view of the collecting pipe.
[0014] Figure 3 A cross-sectional view of the filter.
[0015] Figure 4 This is the AA cross-section view.
[0016] In the figure: 1, casting furnace, 2, air inlet hood, 3, first pipeline, 4, low-pressure pump, 5, second pipeline, 51, elbow, 6, collecting pipe, 61, collecting tank, 7, spray device, 71, protective cover, 72, spray head, 8, filter, 81, filter screen, 9, third pipeline, 10, air outlet, 11, slag discharge valve, 12, fourth pipeline. DETAILED DESCRIPTION
[0017] The technical solution of the utility model will be clearly and completely described below in conjunction with the drawings in the specification. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments; based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.
[0018] The following is combined with Figure 1-4The specific implementation mode of the utility model is further elaborated in detail: a fume purification device for a casting furnace comprises a casting furnace 1, an air intake hood 2, a spray device 7 and a filter 8, an air intake hood 2 is arranged above the casting furnace 1, and the air outlet of the air intake hood 2 is connected to the air inlet of the first pipe 3; the air outlet of the first pipe 3 is connected to the air inlet of the second pipe 5 through a low-pressure pump 4; the function of the low-pressure pump 4 is to suck the fume generated during the metal melting process into the purification device; the air outlet of the second pipe 5 is connected to the inlet of the collecting pipe 6, and the second pipe 5 is connected to the collecting pipe 6 through an elbow 51; in actual use, the elbow 51 is generally 90 degrees, when the wind force When the wind speed is too large, the elbow 51 can slow down the wind force; if large particles of dust enter the pipeline, the elbow 51 can prevent the smoke from directly entering the rear-end equipment, which can effectively protect the safety of the rear-end equipment; a spray device 7 is provided at the upper end of the collecting pipe 6; the spray device 7 includes a protective cover 71 and a spray head 72, the protective cover 71 is a square structure, the lower end face of the protective cover 71 is open and connected to the inside of the collecting pipe 6; the spray heads 72 are evenly distributed on the top surface of the protective cover 71, and the spray heads 72 are connected to an external water supply device; when the device is started, the spray heads 72 can evenly spray a large amount of water mist, which can effectively reduce the temperature of the smoke. , and the water mist can also effectively remove dust in the flue gas to achieve the purpose of purifying the flue gas; in actual use, the length of the collecting pipe 6 and the spraying device 7 can be changed according to the amount of flue gas entering. For example, when the amount of flue gas entering is large, the length of the collecting pipe 6 and the spraying device 7 can be increased at the same time so that the flue gas can be more fully purified; at the same time, if the amount of incoming flue gas decreases, the length of the collecting pipe 6 and the spraying device 7 can be reduced or the number of working heads 72 can be reduced to reduce production costs; a collecting tank 61 is provided at the lower end of the collecting pipe 6, and the horizontal height of the left end of the collecting tank 61 is higher than the horizontal height of the right end of the collecting tank 61, and the right end of the collecting tank 61 is A slag discharge valve 11 is provided at the end; the function of the collecting tank 61 is to collect the water sprayed by the spray head 72 and the dust in the flue gas, and the slag discharge valve 11 is used to clean the water and dust in the collecting tank 61; the air outlet of the collecting pipe 6 is connected to the air inlet of the third pipe 9; the air outlet of the third pipe 9 is connected to the air inlet of the filter 8; the air outlet of the filter 8 is connected to the air inlet of the fourth pipe 12; a plurality of filter nets 81 are provided in the filter 8; the function of the filter 8 is to ensure that the discharged air meets the emission standards; an air outlet mask 10 is provided at the air outlet of the fourth pipe 12, and the air outlet mask 10 is to protect the internal device of the equipment and prevent external water and debris from entering the purification device.
[0019] The use process of the utility model is as follows: when steelmaking begins, the casting furnace and the purification device are turned on; at this time, the low-pressure pump 4 inhales the smoke generated by the casting furnace through the air inlet hood 2, and the smoke enters the collecting pipe 6 through the pipeline; at this time, the spray head 72 of the spray device 7 sprays a large amount of water mist, which can effectively reduce the temperature of the smoke and remove dust in the smoke. Under the action of the water mist, the dust and the water mist are mixed and fall into the collecting tank 61 at the lower end of the collecting pipe 6. When there is too much mixture in the collecting tank 61, the slag discharge valve 11 is opened to discharge the mixture; the air purified by the water mist enters the filter 8, is filtered by the filter screen 81, and is finally discharged from the air outlet mask 10. When the filtering effect of the filter screen 81 does not meet the requirements, the filter screen 81 can be taken out and replaced with a new filter screen 81 to meet the emission requirements.
[0020] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. 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.
[0021] The parts not described in detail in this utility model are prior art.
Claims
1. A fume purification device for a casting furnace, comprising a casting furnace (1), an air intake hood (2), a spray device (7) and a filter (8), wherein: An air intake hood (2) is provided above the casting furnace (1); the air outlet of the air intake hood (2) is connected to the air inlet of the first pipe (3); the air outlet of the first pipe (3) is connected to the air inlet of the second pipe (5) via a low-pressure pump (4); the air outlet of the second pipe (5) is connected to the inlet of the collecting pipe (6); a spray device (7) is provided at the upper end of the collecting pipe (6); the air outlet of the collecting pipe (6) is connected to the air inlet of the third pipe (9); the air outlet of the third pipe (9) is connected to the air inlet of the filter (8); the air outlet of the filter (8) is connected to the air inlet of the fourth pipe (12); and an air outlet cover (10) is provided at the air outlet of the fourth pipe (12).
2. A fume purification device for a casting furnace according to claim 1, characterized in that: A collecting trough (61) is provided at the lower end of the collecting pipe (6), the horizontal height of the left end of the collecting trough (61) is higher than the horizontal height of the right end of the collecting trough (61), and a slag discharge valve (11) is provided at the right end of the collecting trough (61).
3. The fume purification device for a casting furnace according to claim 1, characterized in that: A plurality of filter screens (81) are arranged in the filter (8).
4. The fume purification device for a casting furnace according to claim 1, characterized in that: The spray device (7) comprises a protective cover (71) and a spray head (72); the protective cover (71) is a square structure; the lower end surface of the protective cover (71) is open and communicates with the interior of the collecting pipe (6); the spray heads (72) are evenly distributed on the top surface of the protective cover (71); the spray heads (72) are communicated with an external water supply device.
5. The fume purification device for a casting furnace according to claim 1, characterized in that: The second pipeline (5) is connected to the collecting pipe (6) via an elbow (51).