Disclosure of utility model
The utility model aims to provide a smoke abatement device for vacuum furnace smelting, which can at least partially solve the technical problems mentioned in the background art.
The smoke abatement device for vacuum furnace smelting comprises a smoke abatement filtration system and a fan, wherein the smoke abatement filtration system and the fan are connected in series through a pipeline component, the smoke abatement filtration system comprises a condensation smoke abatement device and a filter element smoke abatement device which are connected in series, the condensation smoke abatement device comprises a condensation container shell, a cooler is arranged in the condensation container shell, the filter element smoke abatement device comprises a filter container shell, a filter element is arranged in the filter container shell, the condensation container shell and the filter container shell are respectively connected with a powder collecting tank through pipelines, and a visible window is arranged on the powder collecting tank.
In one embodiment, the pipeline is connected with a second valve body for controlling the on-off of the pipeline.
In one embodiment, the powder collecting tank is detachably connected to the pipeline, and is provided with a collecting pipeline, and the collecting pipeline is connected with a third valve body. The dust collecting device is used for ensuring the vacuum state in the dust collecting tank when the dust collecting tank is disassembled, and preventing dust explosion accidents.
In one embodiment, the condensation smoke eliminator and/or the filter element smoke eliminator are arranged in two or more sets, and the similar smoke eliminator are arranged in parallel for enhancing the smoke absorption effect.
In one embodiment, the filter element smoke eliminator further comprises a purging mechanism for water sweeping the filter element, so that a large amount of dust is prevented from being adsorbed on the filter element, the smoke eliminating effect is affected, and the risk of deflagration of the superfine powder is increased.
In one embodiment, the purging mechanism includes an inert gas buffer pack having a gas tap that passes through the filter vessel housing and toward the filter cartridge.
In one embodiment, the filter element smoke eliminator further comprises a first pressure transmitter and a second pressure transmitter which are respectively connected with the front end pipeline of the condensation smoke eliminator and the rear end pipeline of the filter element smoke eliminator, and a first pressure gauge connected with the pipeline of the filter element smoke eliminator, wherein the first pressure transmitter and the second pressure transmitter are matched to judge dust blowing time, and the first pressure gauge is used for judging filter element replacement time.
In one embodiment, the smoke abatement filtration system further comprises a flame detector coupled to the filtration vessel housing and a fire suppression system in communication with the filtration vessel housing through a gas delivery conduit.
In one embodiment, the gas pipeline is connected with a pneumatic valve for controlling the on-off of the fire extinguishing container and a second pressure gauge for detecting the internal pressure of the fire extinguishing container.
In one embodiment, the smoke abatement device further comprises an explosion proof control cabinet for housing the smoke abatement filtration system, the explosion proof control cabinet being provided with an openable door and a ventilation grille. Through the explosion-proof control cabinet, not only can integrate automatically controlled distribution, can also prevent that other personnel from touching each valve or switch of smoke abatement filtration system by mistake, can also play the effect of explosion buffering simultaneously.
Compared with the prior art, the smoke elimination device for smelting in the vacuum furnace has the beneficial effects that the smoke elimination device for smelting in the vacuum furnace can assist the smelting process of a vacuum system, and effectively ensure the continuity of the smelting process on the premise of not damaging the atmosphere environment of the vacuum chamber, wherein the smoke elimination filter system can effectively ensure the adsorption force of dust in smoke by arranging the two-stage smoke elimination structures of the condensation smoke eliminator and the filter element smoke eliminator, and can collect and treat settled dust in time by arranging the powder collection tank and the visual window in the condensation smoke eliminator and the filter element smoke eliminator respectively, and further can effectively detect the occurrence information of fire and take fire extinguishing measures in time by arranging the fire extinguishing system and the flame detector, so that the safe production is ensured.
Drawings
FIG. 1 is a schematic diagram of the overall structure of a smoke abatement device for vacuum furnace smelting in an embodiment of the utility model;
FIG. 2 is a schematic diagram of the internal structure of a smoke abatement device for vacuum furnace smelting in an embodiment of the utility model;
FIG. 3 is a schematic view of a condensation smoke eliminator in an embodiment of the present utility model;
FIG. 4 is a schematic diagram of a cooler according to an embodiment of the present utility model;
FIG. 5 is a schematic diagram of a filter element smoke eliminator in an embodiment of the present utility model;
FIG. 6 is a schematic view of a filter element according to an embodiment of the present utility model;
fig. 7 is a schematic view of a fire extinguishing system according to an embodiment of the present utility model.
The meaning of each reference sign in the figure is:
1. Smelting equipment; 2, a smoke abatement filtration system, 3, a fan, 4, an air outlet pipeline, 5, an air inlet pipeline, 6, a serial pipeline, 7, a first valve body, 8, an explosion-proof control cabinet, 81, an openable door, 82, a ventilation grid, 83 and a ventilation fan;
21. The device comprises a condensing smoke eliminator, 211, a condensing container shell, 212, a cooler, 213, a smoke inlet, 214, a smoke outlet, 215, a conical pipeline, 2151, a second valve body, 216, a collecting powder tank, 217, a visual window, 218, a collecting pipeline, 2181, a third valve body, 22, a filter element smoke eliminator, 221, a filtering container shell, 222, a filter element, 223, an inert gas buffer bag, 224, an air tap, 225, a first pressure transmitter, 226, a second pressure transmitter, 227, a first pressure meter, 23, a flame detector, 24, a fire extinguishing system, 25, a gas transmission pipeline, 251, a pneumatic valve, 252 and a second pressure meter.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
Referring to fig. 1-2, the embodiment discloses a smoke abatement device for vacuum furnace smelting, which is used in cooperation with smelting equipment 1, wherein the smelting equipment 1 is provided with an air inlet and an air outlet, and the air inlet and the air outlet are respectively connected with the smoke abatement device to form a circulation loop. The smoke elimination device in the embodiment comprises a smoke elimination filter system 2 and a fan 3 which are connected in series through a pipeline component, wherein the pipeline component comprises an air outlet pipeline 4 connected between an air outlet of smelting equipment 1 and the smoke elimination filter system 2, an air inlet pipeline 5 connected between the fan 3 and an air inlet of the smelting equipment 1 and a serial pipeline 6 connected between the smoke elimination filter system 2 and the fan 3, and the air outlet pipeline 4 and the air inlet pipeline 5 are respectively connected with a first valve body 7 for controlling on-off and flow of the pipeline.
The fan 3 is used for providing the original power of air inlet and air outlet, the smoke generated in the smelting equipment 1 enters the smoke elimination and filtration system 2 through the air outlet pipeline 4 to form smoke sedimentation, then enters the fan 3, and finally returns to the smelting equipment 1 through the air inlet pipeline 5 to form a circulation loop.
Specifically, referring to fig. 3 and 4, the smoke elimination filter system 2 includes a condensation smoke elimination device 21, the condensation smoke elimination device 21 includes a condensation container housing 211, a cavity is formed in the condensation container housing 211, and a cooler 212 is arranged in the cavity. The condensing container housing 211 is provided with a flue gas inlet 213 and a flue gas outlet 214 respectively, the bottom of the condensing container housing 211 is connected with a powder collecting tank 216 through a conical pipeline 215, the conical pipeline 215 is connected with a second valve body 2151 for controlling the on-off of the powder collecting tank, and in addition, the powder collecting tank 216 is provided with a visual window 217 for observing the internal state of the powder collecting tank. When the smoke enters the cavity of the condensation smoke eliminator 21, the high-temperature smoke is settled after colliding with the cooler 212 and falls into the powder collecting tank 216, and a worker can know the powder amount in the powder collecting tank 216 through observing the visual window 217 and perform periodic treatment.
Illustratively, the cooler 212 may be a water-cooled structure, such as a water-cooled grid, with water inlet and outlet lines of the water-cooled grid fixedly connected to the top cover of the condensation vessel housing 211.
To facilitate handling of the powder in the collection canister 216, the collection canister 216 is detachably connected to the tapered pipe 215, and specifically, a collection pipe 218 is provided at the top end of the collection canister 216, and the collection pipe 218 is connected to the tapered pipe 215 by a flange or a clip. As known to those skilled in the art, the vacuum sealed powder collecting device can reduce dust deflagration, and the collecting pipeline 218 is connected with the third valve 2181 to ensure the vacuum state in the powder collecting tank 216 during disassembly. After the operation is completed, the second valve body 2151 of the tapered pipe 215 is closed, the third valve body 2181 of the collection pipe 218 is closed, and the collection pipe 218 is detached from the tapered pipe 215 to perform powder Dunhua treatment.
In some preferred embodiments, the condensation smoke eliminator 21 is arranged in two or more sets to enhance the smoke absorption effect, and a parallel structure is adopted between the condensation smoke eliminator 21, and the specific number can be set according to actual requirements.
Referring to fig. 5 and 6, the smoke elimination and filtration system 2 further includes a filter element smoke elimination device 22 connected to the smoke outlet 214 of the condensation smoke elimination device 21, the filter element smoke elimination device 22 includes a filtration container shell 221, a cavity is formed in the filtration container shell 221, and a filter element 222 is disposed in the cavity. In accordance with the structure of the condensation vessel housing 211, the filtration vessel housing 221 is also provided with a flue gas inlet 213 and a flue gas outlet 214, and the bottom of the filtration vessel housing 221 is also connected with a powder collection tank 216 through a tapered pipe 215. When the smoke enters the cavity of the filter element smoke eliminator 22, dust in the smoke is adsorbed on the filter element 222, and part of smoke particles are settled into the powder collecting tank 216, and the structure of the powder collecting tank 216 is consistent with that of the condensation smoke eliminator 21, and the details are not repeated here. The filter 222 may be a non-woven filter structure or a metal filter structure with micro-filtration pores, for example.
When the device is continuously operated, a large amount of dust is adsorbed on the filter element 222, so that the smoke abatement effect is affected, and the risk of deflagration of the ultrafine powder is increased, so that the dust on the filter element 222 needs to be purged periodically. In this embodiment, the filter element smoke eliminator 22 further comprises a purging mechanism comprising an inert gas buffer bag 223, the inert gas buffer bag 223 is provided with a plurality of sets of air taps 224, and the air taps 224 pass through the filter container housing 221 and face the filter element 222 for purging the filter element 222. The inert gas buffer bag 223 may be fixedly connected to the filter container housing 221, or may be fixed to the supporting table by a bracket, and the gas buffer bag belongs to the prior art, and the structure thereof will not be described herein.
In some embodiments, as shown in fig. 2, the filter element smoke eliminator 22 further comprises a first pressure transmitter 225 and a second pressure transmitter 226 respectively connected to a front end pipeline (an air outlet pipeline 4) of the condensation smoke eliminator 21 and a rear end pipeline of the filter element smoke eliminator 22, and a first pressure gauge 227 connected to a conical pipeline 215 of the filter element smoke eliminator 22, wherein the first pressure transmitter 225 and the second pressure transmitter 226 are matched to judge dust blowing timing, and when the value of the second pressure transmitter 226 is 1.2-1.5 times higher than that of the first pressure transmitter 225, an electromagnetic valve of a gas buffer bag is automatically opened to perform point-spraying blowing on the filter element 222. The first pressure gauge 227 is used for detecting the pressure in the cavity of the filtering container, when the pressure value is 1.2 times to 1.5 times higher than the pressure value of the smelting equipment 1, the purging action needs to be stopped, the filter element 222 is replaced again, and the first pressure gauge 227 is preferably an electric contact pressure gauge.
In some embodiments, two or more sets of filter element smoke eliminators 22 are provided to enhance the smoke absorbing effect, and a parallel structure is adopted between each filter element smoke eliminators 22, and the specific number can be set according to actual requirements.
Referring to fig. 7, in some preferred embodiments, the smoke abatement filtration system 2 further includes a flame detector 23 and a fire suppression system 24, the flame detector 23 is connected to the filter container housing 221, the fire suppression system 24 is connected to the filter container housing 221 through a gas pipe 25, the fire suppression system 24 includes a fire suppression container connected to the gas pipe 25, and the gas pipe 25 is connected with a pneumatic valve 251 for controlling on-off of the fire suppression container and a second pressure gauge 252 for detecting the internal pressure of the fire suppression container. When the flame detector 23 detects that dust deflagration occurs in the cavity of the filter container, the control system controls the pneumatic valve 251 of the fire extinguishing system 24 to be started, and fire retardant is sprayed to extinguish the fire. The fire extinguishing container mainly comprises NaCl, graphite, quicklime and argon, and has certain pressure, and fire extinguishing substances are sprayed into the cavity of the filtering container under the action of the pressure.
Referring again to fig. 1, in this embodiment, the smoke abatement device further includes an explosion-proof control cabinet 8, the explosion-proof control cabinet 8 is provided with an air inlet and an air outlet, the smoke abatement filtration system 2 is disposed in the explosion-proof control cabinet 8, and through the explosion-proof control cabinet 8, not only can the electric control distribution be integrated, but also each valve or switch of the smoke abatement filtration system 2 can be prevented from being touched by other personnel by mistake, and meanwhile, the smoke abatement filtration system 2 can play a role in explosion buffering, and when dust deflagration occurs in the smoke abatement filtration system 2, the explosion-proof control cabinet 8 adopting explosion-proof grade materials can play a role in buffering. Further, the explosion-proof control cabinet 8 is provided with an openable door 81 for facilitating installation and maintenance of internal fittings, and is provided with a ventilation grill 82 and a ventilation fan 83 for ensuring cleaning of the internal air.
It can be appreciated that in this embodiment, the connection between the housing and the pipeline and the connection between the pipelines are all detachable connection structures, and connection structures such as a hook flange and a clamp can be adopted, and sealing structures such as sealing rings are required to be additionally installed at the connection positions, so as to ensure the vacuum or inert gas atmosphere in the system.
In the actual operation process, smoke is mainly generated by heating metal materials in a heating crucible in the smelting equipment 1, along with continuous smelting, the smelting equipment 1 generates a large amount of smoke, because the suction of the rear end fan 3 affects, the original power of air inlet and air outlet is formed, the smoke enters the condensation smoke eliminator 21 through the air outlet pipeline 4 to form the first smoke sedimentation, then enters the filter element smoke eliminator 22 to form the second smoke sedimentation, then enters the fan 3, is discharged by the fan 3, and finally returns to the smelting equipment 1 through the air inlet pipeline 5 to form a circulation process.
The smoke elimination device for vacuum furnace smelting provided by the embodiment can assist the smelting process of a vacuum system, effectively ensures the continuity of the smelting process on the premise of not damaging the atmosphere environment of a vacuum cavity, wherein the smoke elimination filter system 2 can effectively ensure the adsorption force to dust in smoke by arranging a two-stage smoke elimination structure of the condensation smoke eliminator 21 and the filter element smoke eliminator 22, can collect and treat settled dust in time by arranging the powder collection tank 216 and the visible window 217 in the condensation smoke eliminator 21 and the filter element smoke eliminator 22 respectively, and can effectively detect the fire occurrence information by arranging the fire extinguishing system 24 and the flame detector 23 and take fire extinguishing measures in time so as to ensure safe production.
The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the above-described embodiments, and that the above-described embodiments and descriptions are only preferred embodiments of the present utility model, and are not intended to limit the utility model, and that various changes and modifications may be made therein without departing from the spirit and scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.