CN107218812B - Energy-saving heat preservation furnace for casting - Google Patents
Energy-saving heat preservation furnace for casting Download PDFInfo
- Publication number
- CN107218812B CN107218812B CN201710470262.8A CN201710470262A CN107218812B CN 107218812 B CN107218812 B CN 107218812B CN 201710470262 A CN201710470262 A CN 201710470262A CN 107218812 B CN107218812 B CN 107218812B
- Authority
- CN
- China
- Prior art keywords
- liquid
- tank
- furnace body
- pool
- degassing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B19/00—Combinations of furnaces of kinds not covered by a single preceding main group
- F27B19/02—Combinations of furnaces of kinds not covered by a single preceding main group combined in one structure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D19/00—Arrangements of controlling devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D3/00—Charging; Discharging; Manipulation of charge
- F27D3/14—Charging or discharging liquid or molten material
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D3/00—Charging; Discharging; Manipulation of charge
- F27D3/15—Tapping equipment; Equipment for removing or retaining slag
- F27D3/1545—Equipment for removing or retaining slag
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D7/00—Forming, maintaining, or circulating atmospheres in heating chambers
- F27D7/06—Forming or maintaining special atmospheres or vacuum within heating chambers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D7/00—Forming, maintaining, or circulating atmospheres in heating chambers
- F27D7/06—Forming or maintaining special atmospheres or vacuum within heating chambers
- F27D2007/063—Special atmospheres, e.g. high pressure atmospheres
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D19/00—Arrangements of controlling devices
- F27D2019/0028—Regulation
- F27D2019/0034—Regulation through control of a heating quantity such as fuel, oxidant or intensity of current
- F27D2019/0037—Quantity of electric current
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Silicon Compounds (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The invention provides an energy-saving heat preservation furnace for casting, which comprises a liquid adding tank, a first furnace body communicated with the liquid adding tank, a liquid taking tank communicated with the first furnace body, and a liquid storage tank, wherein the liquid adding tank, the first furnace body and the liquid taking tank are sequentially arranged according to the flow direction of liquid materials, and the energy-saving heat preservation furnace further comprises: the liquid material flows into the liquid taking pond through the overflow channel, and then flows back to the first furnace body through the overflow channel. According to the technical scheme, the temperature difference between the liquid taking pool and the liquid in the first furnace body is reduced, the temperature stability and the temperature controllability of the liquid are improved, impurities in the liquid are reduced, the quality of castings is further improved, and the energy consumption is reduced.
Description
Technical Field
The invention relates to the technical field of metal smelting processing, in particular to an energy-saving heat preservation furnace for casting.
Background
In the related art, an aluminum alloy casting heat preservation furnace is generally composed of a liquid adding tank, a furnace body and a liquid taking tank, most of liquid materials are uniformly supplied after being melted by a melting furnace, the liquid materials are added by a transfer ladle, the liquid materials flow into the furnace body from the liquid adding tank, after the furnace body is heated, flow into the liquid taking tank, and the following technical defects exist:
(1) When the liquid taking tank is exposed in the air and is not heated by the heating device, the liquid in the liquid taking tank is difficult to supplement, the liquid in the liquid taking tank is gradually cooled, solidified and frozen, the quality of castings is reduced, the normal use of the liquid is affected, and if the liquid in the liquid taking tank is to be reheated, the low-temperature liquid in the liquid taking tank is conveyed into the liquid adding tank by manpower, so that the labor intensity is high, the danger is high, and the energy consumption is increased.
(2) The thermocouple that sets up in the furnace body detects the interior liquid material temperature of furnace body, and then the power of control combustor realizes liquid material heating, and on the one hand, the thermocouple sets up in the furnace body, receives the influence of flame, flue gas and high temperature, and is fragile, and maintenance is changed inconveniently, on the other hand, is difficult to accurately control through this thermocouple and gets the interior liquid material temperature of liquid pool, and the interior liquid material temperature of liquid pool is got in the supplementary heating of proper improvement furnace body generally, has increased the energy consumption of heating.
(3) Excessive impurities and gas in liquid materials in the liquid pool are taken, and the quality of castings is affected.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems existing in the prior art or related art.
Accordingly, an object of the present invention is to provide an energy-saving holding furnace for casting.
In order to achieve the above object, the technical scheme of the invention provides an energy-saving heat preservation furnace for casting, which comprises a liquid adding tank, a first furnace body and a liquid taking tank, wherein the liquid adding tank, the first furnace body and the liquid taking tank are sequentially arranged according to the flow direction of liquid, the liquid taking tank is communicated with the liquid adding tank, and the energy-saving heat preservation furnace further comprises: the liquid material flows into the first furnace body from the liquid adding groove, the first furnace body is used for heating the liquid material, the heated liquid material flows into the liquid taking pond, and when the liquid pumping pump rotates to work, the liquid material is sucked into the liquid returning pond from the liquid taking pond and flows back to the first furnace body through the overflow channel.
According to the technical scheme, after the liquid material in the liquid taking tank communicated with the reflux tank is pumped through the liquid pumping pump and the liquid level of the reflux tank is increased, the liquid material in the reflux tank flows back to the first furnace body through the overflow channel to be heated again, and the liquid taking tank is also used for supplementing new liquid material from the first furnace body to the liquid taking tank due to the fact that the liquid level is reduced, so that circulating flow and circulating heating are formed, on one hand, the temperature difference between the liquid taking tank and the liquid material in the first furnace body is reduced, the temperature stability and the controllability of the liquid material are improved, the casting defect problems such as a large number of pinholes, undercasting and shrinkage porosity caused by the reduction of the temperature of the liquid material in the liquid taking tank are reduced, the quality of castings is improved, on the other hand, the situation that the liquid material in the liquid taking tank is manually conveyed into the liquid adding tank to be heated again by the first furnace body due to the reduction of the temperature of the liquid material in the liquid taking tank is reduced, the labor intensity and the energy consumption are reduced, and the manpower and resources are saved.
The liquid extraction pump in the reflux tank rotates to draw liquid, liquid is partially replaced by liquid in the production process, the liquid can be sucked into the reflux tank from the stationary liquid taking tank, the liquid in the liquid taking tank is actively and continuously reduced, the liquid in the liquid taking tank is self-supplemented and heated, and the feasibility of circulating flowing and refluxing of the liquid is improved.
In addition, the liquid level of the reflux pool is higher than that of the first furnace body, so that the reflux pool can overflow back to the first furnace body through the overflow channel under the action of gravity.
Specifically, the liquid material is added into the liquid adding tank through the transfer package, the corresponding liquid level scale is arranged on the liquid adding tank, the liquid level of the liquid adding tank, namely the liquid level of the first furnace body, can be judged by reading the liquid level of the liquid adding tank, the liquid material flows into the first furnace body from the liquid adding tank, the first furnace body heats and keeps warm the liquid material, the heated liquid material flows into the liquid taking tank from the bottom of the first furnace body, the liquid material in the liquid taking tank is sucked into the backflow tank under the rotating attractive force of a liquid suction pump in the backflow tank, when the liquid level of the backflow tank is higher than the liquid level of the first furnace body, the liquid material overflows back to the first furnace body through an overflow channel, the liquid level in the liquid taking tank falls, the liquid material level in the first furnace body is higher than the liquid material level in the liquid taking tank, the liquid material in the first furnace body is automatically supplemented into the liquid taking tank under the action of gravity, the liquid material in the original liquid taking tank is supplemented and heat is transferred, the liquid material in the liquid taking tank is heated again, the liquid material in the liquid taking tank is enabled to be stable in the liquid taking tank, the liquid material temperature in the liquid taking tank is maintained within the casting temperature range, the casting temperature is maintained within the heating temperature range, the casting temperature is not required to be maintained, and the heat preservation temperature is not reduced, but the casting quality is not consumed.
In any of the above technical solutions, preferably, a temperature control sensor is disposed in the liquid taking tank to control the heating power of the first furnace body.
In the technical scheme, the heating power of the first furnace body is controlled by arranging the temperature control sensor in the liquid taking tank, so that the temperature control in the liquid taking tank is more accurate and better accords with the casting process requirement, and the temperature of liquid in the liquid taking tank is used as the temperature control standard for heating the first furnace body.
When the liquid material is aluminum liquid, the temperature in the liquid taking pool is kept at 680-720 ℃, when the temperature control sensor detects that the temperature in the liquid taking pool is lower than 680 ℃, the heating power of the first furnace body is controlled to be increased, and when the temperature control sensor detects that the temperature in the liquid taking pool is higher than 720 ℃, the heating power of the first furnace body is controlled to be reduced or the heating operation of the first furnace body is controlled to be closed.
In addition, a temperature control sensor is arranged in the liquid taking pool, compared with the temperature control sensor arranged in the first furnace body in the prior art, the temperature control sensor does not need to bear the fumigation of flame and smoke in the furnace body, is not affected by the operation of cleaning waste residues on the wall of the furnace body, is not easy to damage, prolongs the service life of the temperature control sensor, is more convenient to maintain and replace, and can be replaced by a temperature control thermocouple.
In the above technical solution, preferably, the method further includes: the gas removal tank is arranged between the first furnace body and the liquid taking tank, the gas removal tank is communicated with the bottom of the first furnace body, the gas removal tank is communicated with the liquid taking tank, a gas removal rotor is arranged in the gas removal tank, wherein liquid material flows into the gas removal tank from the first furnace body, inert gas is introduced into the center of the gas removal rotor and rotates to work, the gas removal tank is used for removing gas and slag from the liquid material, and the liquid material after gas removal and slag removal flows into the liquid taking tank.
According to the technical scheme, the liquid material is degassed and deslagged through the degassing tank arranged between the first furnace body and the liquid taking tank, impurities such as hydrogen, oxidation slag inclusion and the like in the liquid material can be effectively removed, casting defects are reduced, and the quality of castings is improved.
Inert gas (such as high-purity nitrogen) is introduced into the center of the degassing rotor and rotates, so that the inert gas can be broken into a large number of dispersed bubbles, the dispersed bubbles are dispersed in the liquid material, the bubbles absorb impurities such as slag inclusion and the like in the liquid material by the gas partial pressure difference and the surface adsorption principle in the liquid material, and the impurities are adsorbed and oxidized along with the rising of the bubbles, so that the purity of the liquid material is improved, and the quality of castings is further improved.
In any of the above embodiments, preferably, the degassing rotor is a graphite rotor or a silicon nitride rotor.
In the technical scheme, the graphite rotor or the silicon nitride rotor is used as the degassing rotor, so that the defects of poor degassing effect and increased impurity caused by deformation of the degassing rotor due to high temperature influence are reduced, the graphite rotor is made of high-purity high-density graphite, the high-temperature resistance is good, the graphite or the silicon nitride material is not easy to deform, the chemical property of the graphite or the silicon nitride material is stable, the graphite or the silicon nitride material cannot chemically react with liquid materials, particularly active metals such as aluminum liquid, the chemical components of the liquid materials cannot be polluted and damaged, the high-temperature resistance is good, the service life can be prolonged, and the maintenance and the replacement are reduced.
In any of the above embodiments, preferably, the method further includes: the standing pool is arranged between the degassing pool and the liquid taking pool, the standing pool is communicated with the degassing pool through a first channel, the standing pool is communicated with the liquid taking pool through a second channel, wherein liquid material flows into the standing pool from the degassing pool, the standing pool is used for standing and deslagging the liquid material, and the liquid material after deslagging flows into the liquid taking pool.
In the technical scheme, as the liquid material has a certain amount of slag inclusion, the degassing rotor in the degassing tank is used for rotating to remove the gas and slag, so that the slag inclusion in the liquid material in the degassing tank is always in a suspension motion state, and a standing tank is arranged between the degassing tank and the liquid taking tank, so that the liquid material is firstly kept still Chi Naping before entering the liquid taking tank, impurities such as oxidized slag inclusion and scum of the liquid material in the first furnace body and the degassing tank can be further separated, the liquid material is purified, the impurities entering the liquid taking tank are reduced, the internal quality of castings is improved, and the performance of products is improved.
Specifically, the liquid material after the degasification flows into the standing pool from the degasification pool, under the standing effect of the standing pool, part of impurities float upwards, part of impurities sink, the impurities float upwards are salvaged regularly, and the sinking impurities are cleaned, so that the purification degree of the liquid material can be improved.
In any of the above embodiments, preferably, the first channel and the second channel are staggered.
In the technical scheme, through the staggered arrangement of the first channel and the second channel, the distance from the degassing tank to the liquid taking tank is prolonged, the standing time is prolonged, the liquid in the degassing tank is reduced from directly flowing into the liquid taking tank without standing, the impurities entering the liquid taking tank are further reduced, the internal quality of castings is improved, and the performance of products is improved.
In any of the above solutions, preferably, the first channel is connected to a middle-lower portion of the standing pool, and the second channel is connected to a middle-upper portion of the standing pool.
According to the technical scheme, due to the technical requirement, the slag remover is periodically put into the degassing tank to perform oxidation slag inclusion cleaning, more mixture scum formed by the physical and chemical reactions of the oxidation slag inclusion and the slag remover can be generated and float on the liquid surface, and part of scum is involved below the liquid surface when the graphite rotor rotates, so that the scum is communicated with the middle lower part of the degassing tank through the first channel, enters the standing tank, is prevented from flowing into the liquid taking tank through the second channel, impurities settled at the lower part of the standing tank can be furthest reduced to flow into the liquid taking tank along with liquid materials, the impurities entering the liquid taking tank are further reduced, the internal quality of castings is improved, and the performance of products is improved.
In any of the above embodiments, preferably, the method further includes: the second furnace body is arranged between the first furnace body and the liquid adding groove, the bottom of the second furnace body is communicated with the first furnace body through a radial flow channel, the second furnace body is communicated with the liquid adding groove, the bottom of the second furnace body is higher than the highest liquid level of the first furnace body, liquid flows into the second furnace body from the liquid adding groove, when inert gas sprays refining agent, the second furnace body is used for carrying out preliminary degassing and deslagging on the liquid, and the liquid after preliminary degassing and deslagging flows into the first furnace body.
In this technical scheme, through establishing the second furnace body between first furnace body and liquid feeding groove, realize the preliminary degasification slagging-off to the liquid material, can further reduce the impurity in the liquid material of in-service use to last to the supplementary liquid material in the first furnace body, keep first furnace body, degassing tank, get the liquid level of liquid bath etc. and conveniently once only from getting the liquid bath and scooping up rated amount of liquid material, improve the performance of cast product.
Specifically, the liquid material flows into the second furnace body from the liquid adding groove, when the liquid material in the second furnace body reaches a certain liquid level, inert gas is used for spraying refining agent into the second furnace body, preliminary degassing and deslagging treatment is carried out, the cleanliness of the liquid material is improved, then the liquid material continuously flows into the first furnace body from the bottom of the second furnace body through small runoff of the runoff channel, the liquid material in the runoff channel is kept from being coagulated, the liquid material is continuously replenished into the first furnace body, the liquid material in the first furnace body is kept in a more sufficient state all the time, scum and the like in the liquid material can be trapped in the second furnace body, the cleanliness of the liquid material in the first furnace body is improved, and further the cleanliness of the liquid material in a liquid taking pool is improved, so that the performance of a cast product is improved.
In any of the above technical solutions, preferably, the caliber of the liquid taking tank is larger than the caliber of the backflow tank, and the caliber of the liquid taking tank is larger than the caliber of the standing tank.
In the technical scheme, the caliber of the liquid taking pool is larger than that of the reflux pool, so that liquid pumped by the liquid pumping pump can quickly fill the reflux pool and overflow back to the first furnace body, the residence time in the reflux pool is reduced, the heat loss is reduced, the caliber of the liquid taking pool is larger than that of the standing pool, the residence time of the liquid in the standing pool can be effectively reduced, and the heat loss is reduced while the standing purpose is achieved.
In any of the above embodiments, the liquid pump is preferably a graphite impeller pump or a silicon nitride impeller pump.
In the technical scheme, the liquid pump is a graphite impeller pump or a silicon nitride impeller pump, the chemical property of graphite or silicon nitride material is stable, the liquid pump can not react with liquid materials, especially active metals (such as aluminum liquid), the chemical components of the liquid materials can not be polluted and destroyed, the high temperature resistance is good, the service life can be prolonged, and the maintenance and the replacement are reduced.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:
figure 1 shows a schematic structure of an energy saving holding furnace for casting according to an embodiment of the present invention,
the correspondence between the reference numerals and the components in fig. 1 is:
102 a first furnace, 104 a liquid adding tank, 106 a liquid taking tank, 108 a backflow tank, 110 an overflow channel, 112 a degassing tank, 114 a standing tank, 116 a first channel, 118 a second channel, 120 a second furnace and 122 a radial flow channel.
Detailed Description
In order that the above-recited objects, features and advantages of the present invention will be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments may be combined with each other.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those described herein, and therefore the scope of the present invention is not limited to the specific embodiments disclosed below.
An energy-saving holding furnace for casting according to an embodiment of the present invention will be specifically described with reference to fig. 1.
As shown in fig. 1, the energy-saving heat preservation furnace for casting according to the embodiment of the invention comprises a liquid adding tank 104, a first furnace body 102 communicated with the liquid adding tank 104, and a liquid taking tank 106 communicated with the first furnace body 102, which are sequentially arranged according to the liquid flow direction, and further comprises: the reflux pool 108 is communicated with the liquid taking pool 106, the reflux pool 108 is communicated with the first furnace body 102 through an overflow channel 110, the pool wall height of the reflux pool 108 is higher than that of the liquid taking pool 106, a liquid drawing pump is arranged in the reflux pool 108, wherein liquid flows into the first furnace body 102 from the liquid adding groove 104, the first furnace body 102 is used for heating the liquid, the heated liquid flows into the liquid taking pool 106, and when the liquid drawing pump rotates, the liquid is sucked into the reflux pool 108 from the liquid taking pool 106 and flows back into the first furnace body 102 through the overflow channel 110.
In this embodiment, after the liquid material in the liquid-taking tank 106 communicated with the reflux tank 108 is pumped by the liquid-pumping pump and the liquid level of the reflux tank 108 is raised, the liquid material in the reflux tank 108 flows back to the first furnace body 102 through the overflow channel 110 to be reheated, and the liquid-taking tank 106 is also replenished with new liquid from the first furnace body 102 to the liquid-taking tank 106 due to the lowering of the liquid level, so that circulating flow and circulating heating are formed, on one hand, the temperature difference between the liquid-taking tank 106 and the liquid material in the first furnace body 102 is reduced, the temperature stability and controllability of the liquid material are improved, the casting defect problems such as a large number of pinholes, undercasting, shrinkage and the like caused by the lowering of the temperature of the liquid material in the liquid-taking tank 106 are reduced, the quality of castings is improved, and on the other hand, the occurrence of the situation that the liquid-taking tank 106 is manually conveyed to the liquid-taking tank 104 to be reheated by the first furnace body 102 due to the lowering of the temperature of the liquid material in the liquid-taking tank 106 is reduced, the labor intensity and the energy consumption are reduced, and the manpower and resources are saved.
The liquid pump in the reflux pool 108 rotates to pump liquid, so that liquid is partially replaced in the production process, and can be sucked into the reflux pool 108 from the rest state in the liquid taking pool 106, and the liquid in the liquid taking pool 106 is automatically and continuously reduced to realize self-replenishment and heating of the liquid in the liquid taking pool 106, so that the feasibility of realizing circulating flow reflux of the liquid is improved.
In addition, the level of the return tank 108 is higher than the level of the first furnace 102, so that the water can overflow back to the first furnace 102 through the overflow channel 110 under the action of gravity.
Specifically, liquid is added into the liquid adding tank 104 through the transfer package, the liquid adding tank 104 is provided with corresponding liquid level scale, the first furnace body 102 is arranged, the liquid level of the liquid adding tank 104, namely the liquid level of the first furnace body 102, the liquid level of the liquid adding tank 104 can be read to judge the amount of the liquid in the first furnace body 102, the liquid flows into the first furnace body 102 from the liquid adding tank 104, the first furnace body 102 heats and keeps warm the liquid, the heated liquid flows into the liquid taking tank 106 from the bottom of the first furnace body 102, the liquid in the liquid taking tank 106 is sucked into the reflux tank 108 under the rotation attraction of the liquid pumping pump in the reflux tank 108, when the liquid level of the reflux pool 108 is higher than that of the first furnace body 102, liquid flows back to the first furnace body 102 through the overflow channel 110, the liquid level in the liquid taking pool 106 is lowered, the liquid level in the first furnace body 102 is higher than that in the liquid taking pool 106, the liquid in the first furnace body 102 is automatically supplemented into the liquid taking pool 106 under the action of gravity, the liquid in the original liquid taking pool 106 is supplemented and heat is transferred, the liquid in the liquid taking pool 106 is reheated, the liquid in the liquid taking pool 106 is enabled to be stable in temperature, the casting quality is improved, and the energy consumption of heating and heat preservation is reduced.
In any of the above embodiments, a temperature control sensor is preferably disposed in the liquid-taking tank 106 to control the heating power of the first furnace 102.
In this embodiment, the heating power of the first furnace body 102 is controlled by setting a temperature control sensor in the liquid taking tank 106, so that the temperature control in the liquid taking tank 106 is more accurate and better meets the casting process requirement, and the temperature of the liquid in the liquid taking tank 106 is used as the temperature control standard for heating the first furnace body 102, and the heat preservation and heating energy consumption of the liquid in the first furnace body 102 can be reduced on the premise of meeting the casting process requirement due to small temperature difference between the liquid taking tank 106 and the liquid in the first furnace body 102.
When the liquid material is aluminum liquid, the temperature in the liquid taking pool 106 is kept at 680-720 ℃, when the temperature control sensor detects that the temperature in the liquid taking pool 106 is lower than 680 ℃, the heating power of the first furnace body 102 is controlled to be increased, and when the temperature control sensor detects that the temperature in the liquid taking pool 106 is higher than 720 ℃, the heating power of the first furnace body 102 is controlled to be reduced or the heating operation of the first furnace body 102 is controlled to be closed.
In addition, a temperature control sensor is arranged in the liquid taking pool 106, compared with the temperature control sensor arranged in the first furnace body 102 in the prior art, the temperature control sensor does not need to bear the fumigation of flame and smoke in the furnace body, is not affected by the operation of cleaning waste residues on the furnace wall, is not easy to damage, prolongs the service life of the temperature control sensor, is more convenient to maintain and replace, and can be replaced by a temperature control thermocouple.
In the above embodiment, preferably, the method further includes: the degassing tank 112 is arranged between the first furnace body 102 and the liquid taking tank 106, the degassing tank 112 is communicated with the bottom of the first furnace body 102, the degassing tank 112 is communicated with the liquid taking tank 106, a degassing rotor is arranged in the degassing tank 112, wherein liquid material flows into the degassing tank 112 from the first furnace body 102, inert gas is introduced into the center of the degassing rotor and rotates to work, the degassing tank 112 is used for degassing and deslagging the liquid material, and the liquid material after degassing and deslagging flows into the liquid taking tank 106.
In this embodiment, the liquid material is degassed and deslagged by the degassing tank 112 arranged between the first furnace body 102 and the liquid taking tank 106, so that impurities such as hydrogen, oxide slag inclusion and the like in the liquid material can be effectively removed, casting defects can be reduced, and the quality of castings can be improved.
Inert gas (such as high-purity nitrogen) is introduced into the center of the degassing rotor and rotates, so that the inert gas can be broken into a large number of dispersed bubbles, the dispersed bubbles are dispersed in the liquid material, the bubbles absorb impurities such as slag inclusion and the like in the liquid material by the gas partial pressure difference and the surface adsorption principle in the liquid material, and the impurities are adsorbed and oxidized along with the rising of the bubbles, so that the purity of the liquid material is improved, and the quality of castings is further improved.
In any of the above embodiments, preferably, the degassing rotor is a graphite rotor or a silicon nitride rotor.
In the embodiment, the graphite rotor or the silicon nitride rotor is used as the degassing rotor, so that the defects of poor degassing effect and increased impurity caused by deformation of the degassing rotor due to high temperature influence are reduced, the graphite rotor is made of high-purity high-density graphite, the high-temperature resistance is good, the graphite or the silicon nitride material is not easy to deform, the chemical property of the graphite or the silicon nitride material is stable, the graphite or the silicon nitride material cannot chemically react with liquid materials, particularly active metals such as aluminum liquid, the chemical components of the liquid materials cannot be polluted and damaged, the high-temperature resistance is good, the service life can be prolonged, and the maintenance and the replacement are reduced.
In any of the foregoing embodiments, preferably, the method further includes: the standing pool 114 is arranged between the degassing pool 112 and the liquid taking pool 106, the standing pool 114 is communicated with the degassing pool 112 through a first channel 116, the standing pool 114 is communicated with the liquid taking pool 106 through a second channel 118, wherein liquid material flows into the standing pool 114 from the degassing pool 112, the standing pool 114 is used for standing and deslagging the liquid material, and the deslagged liquid material flows into the liquid taking pool 106.
In this embodiment, since the liquid material itself has a certain amount of slag, the degassing rotor in the degassing tank 112 rotates to remove the slag, so that the slag in the liquid material in the degassing tank 112 is always in a suspension motion state, and the standing tank 114 is arranged between the degassing tank 112 and the liquid taking tank 106, so that the liquid material is firstly calmed down in the standing tank 114 before entering the liquid taking tank 106, so that impurities such as oxidized slag and scum of the liquid material in the first furnace body 102 and the degassing tank 112 can be further separated, the liquid material is purified, the impurities entering the liquid taking tank 106 are reduced, the internal quality of castings is improved, and the performance of products is improved.
Specifically, the deaerated liquid material flows into the standing pool 114 from the deaeration pool 112, and under the standing action of the standing pool 114, part of impurities float upwards, part of impurities sink, and the floating impurities are salvaged regularly and the sinking impurities are cleaned, so that the purification degree of the liquid material can be improved.
In any of the above embodiments, the first channel 116 is preferably offset from the second channel 118.
In this embodiment, the first channel 116 and the second channel 118 are staggered, so that the distance from the degassing tank 112 to the liquid taking tank 106 is prolonged, the standing time is increased, the liquid in the degassing tank 112 is reduced from directly flowing into the liquid taking tank 106 without standing, impurities entering the liquid taking tank 106 are further reduced, the internal quality of castings is improved, and the performance of products is improved.
In any of the above embodiments, it is preferable that the first passage 116 communicates with a middle lower portion of the stationary pool 114, and the second passage 118 communicates with a middle upper portion of the stationary pool 114.
In this embodiment, due to the process requirement, the slag remover is periodically put into the degassing tank 112 to perform oxidation slag inclusion cleaning, so that more slag in the mixture formed by the physical and chemical reaction of the oxidation slag inclusion and the slag remover floats on the liquid surface, and a part of the slag is involved below the liquid surface when the graphite rotor rotates, so that the slag is communicated with the middle lower part of the degassing tank 112 through the first channel 116, enters the standing tank 114, is prevented from flowing into the liquid taking tank 106 through the middle upper part of the standing tank 114 through the second channel 118, impurities sinking into the lower part of the standing tank 114 along with the liquid material flow into the liquid taking tank 106 can be furthest reduced, the impurities entering the liquid taking tank 106 are further reduced, the internal quality of castings is improved, and the performance of products is improved.
In any of the foregoing embodiments, preferably, the method further includes: the second furnace body 120 is arranged between the first furnace body 102 and the liquid adding groove 104, the bottom of the second furnace body 120 is communicated with the first furnace body 102 through a radial flow channel 122, the second furnace body 120 is communicated with the liquid adding groove 104, wherein the bottom position of the second furnace body 120 is higher than the highest liquid level position of the first furnace body 102, liquid flows into the second furnace body 120 from the liquid adding groove 104, when inert gas sprays refining agent, the second furnace body 120 is used for carrying out preliminary degassing and deslagging on the liquid, and the liquid after preliminary degassing and deslagging flows into the first furnace body 102.
In this embodiment, by providing the second furnace body 120 between the first furnace body 102 and the liquid adding tank 104, preliminary degassing and deslagging of the liquid material are achieved, impurities in the liquid material in actual use can be further reduced, the liquid material is continuously replenished into the first furnace body 102, the liquid level of the first furnace body 102, the degassing tank 112, the liquid taking tank 106 and the like is kept, a rated amount of liquid material is conveniently scooped from the liquid taking tank 106 at one time, and the performance of a cast product is improved.
Specifically, the liquid material flows into the second furnace body 120 from the liquid adding tank 104, when the liquid material in the second furnace body 120 reaches a certain liquid level, the inert gas is used for spraying the refining agent into the second furnace body 120, preliminary degassing and deslagging treatment is performed, the cleanliness of the liquid material is improved, then small runoff continuously flows into the first furnace body 102 from the bottom of the second furnace body 120 through the runoff channel 122, the liquid material in the runoff channel 122 is kept from being coagulated, the liquid material is continuously replenished into the first furnace body 102, the liquid material in the first furnace body 102 is kept in a sufficient state all the time, and the scum and the like in the liquid material can be trapped in the second furnace body 120, so that the cleanliness of the liquid material in the first furnace body 102 is improved, and further the cleanliness of the liquid material in the liquid taking pool 106 is improved, so that the performance of cast products is improved.
In any of the above embodiments, the caliber of the liquid taking tank 106 is preferably larger than that of the reflux tank 108, and the caliber of the liquid taking tank 106 is preferably larger than that of the standing tank 114.
In this embodiment, the caliber of the liquid taking tank 106 is larger than the caliber of the backflow tank 108, so that the liquid pumped by the liquid pumping pump can quickly fill the backflow tank 108 and overflow back to the first furnace body 102, the residence time in the backflow tank 108 is reduced, the heat loss is reduced, the caliber of the liquid taking tank 106 is larger than the caliber of the standing tank 114, the residence time of the liquid in the standing tank 114 can be effectively reduced, and the heat loss is reduced while the standing purpose is achieved.
In any of the above embodiments, preferably, the liquid pump is a graphite impeller pump or a silicon nitride impeller pump.
In the embodiment, the liquid pump is a graphite impeller pump or a silicon nitride impeller pump, the chemical property of graphite or silicon nitride material is stable, the liquid pump can not react with liquid materials, especially active metals (such as aluminum liquid), the chemical components of the liquid materials can not be polluted and destroyed, the high temperature resistance is good, the service life can be prolonged, and the maintenance and the replacement are reduced.
Examples
As shown in fig. 1, after liquid material is added into the liquid adding tank 104, the liquid material flows into the second furnace body 120 from the liquid adding tank 104, after the liquid material in the second furnace body 120 reaches a certain liquid level, a refining agent is filled into a powder blower, inert gas is turned on to spray the refining agent, preliminary degassing, deslagging and purifying treatment are carried out on the liquid material, the liquid material after preliminary degassing, deslagging and purifying treatment continuously flows into the first furnace body 102 from the bottom of the second furnace body 120 through small runoff of a runoff passage, the first furnace body 102 is heated, the heated liquid material flows into the degassing tank 112 from the first furnace body 102, inert gas is introduced into the degassing rotor in the degassing tank 112, further degassing and deslagging are carried out on the liquid material, the liquid material after degassing and deslagging flows into the standing tank 114 from the degassing tank 112 through the first passage 116, the standing tank 114 is kept still, impurities such as scum in the liquid materials can be further separated, the liquid materials in the standing pool 114 flow into the liquid taking pool 106 through the second channel 118, one part of the liquid materials in the liquid taking pool 106 are taken as casting products, the other part of the liquid materials are sucked into the reflux pool 108 under the suction force generated by rotation of the liquid pumping pump in the reflux pool 108, the liquid in the reflux pool 108 flows back into the first furnace body 102 through the overflow channel 110 and is reheated, and the liquid materials in the first furnace body 102, the degassing pool 112, the standing pool 114, the liquid taking pool 106 and the reflux pool 108 form a circulating flow and circulating heating channel, so that the temperature difference between the liquid materials in the liquid taking pool 106 and the liquid materials in the first furnace body 102 is not large, the heating energy consumption is reduced, and the stability of the liquid material temperature in the liquid taking pool 106 is improved.
The technical scheme of the invention is described in detail by combining the drawings, and the invention provides the energy-saving heat preservation furnace for casting.
In the present invention, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more, unless expressly defined otherwise. The terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; "coupled" may be directly coupled or indirectly coupled through intermediaries. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the description of the present invention, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "front", "rear", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or units referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present invention.
In the description of the present specification, the terms "one embodiment," "some embodiments," "particular embodiments," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. The utility model provides an energy-conserving heat preservation stove is used in casting, includes the liquid feeding groove that sets gradually according to the liquid material flow direction, with the first furnace body of liquid feeding groove intercommunication and with the liquid taking pond of first furnace body intercommunication, its characterized in that still includes:
the reflux tank is communicated with the liquid taking tank, the reflux tank is communicated with the first furnace body through an overflow channel, the height of the tank wall of the reflux tank is higher than that of the liquid taking tank, a liquid pump is arranged in the reflux tank,
the liquid material flows into the first furnace body from the liquid feeding groove, the first furnace body is used for heating the liquid material, the heated liquid material flows into the liquid taking tank, and when the liquid pumping pump rotates to work, the liquid material is sucked into the backflow tank from the liquid taking tank and then flows back to the first furnace body through the overflow channel;
a temperature control sensor is arranged in the liquid taking pool so as to control the heating power of the first furnace body;
the degassing tank is arranged between the first furnace body and the liquid taking tank,
the standing pool is arranged between the degassing pool and the liquid taking pool, the standing pool is communicated with the degassing pool through a first channel, the standing pool is communicated with the liquid taking pool through a second channel, and the first channel and the second channel are staggered;
the caliber of the liquid taking pool is larger than that of the backflow pool, and the caliber of the liquid taking pool is larger than that of the standing pool.
2. The energy-saving holding furnace for casting according to claim 1, wherein,
the degassing tank is communicated with the bottom of the first furnace body, the degassing tank is communicated with the liquid taking tank, a degassing rotor is arranged in the degassing tank,
the liquid flows into the degassing tank from the first furnace body, inert gas is introduced into the center of the degassing rotor and the degassing tank is used for degassing and deslagging the liquid when the degassing rotor rotates, and the liquid after degassing and deslagging flows into the liquid taking tank.
3. The energy-saving holding furnace for casting according to claim 2, wherein,
the degassing rotor is a graphite rotor or a silicon nitride rotor.
4. The energy-saving holding furnace for casting according to claim 2, wherein,
the liquid material flows into the standing pool from the degassing pool, the standing pool is used for standing and deslagging the liquid material, and the deslagged liquid material flows into the liquid taking pool.
5. The energy-saving holding furnace for casting according to claim 1, wherein,
the first channel is communicated with the middle lower part of the standing pool, and the second channel is communicated with the middle upper part of the standing pool.
6. The energy-saving holding furnace for casting according to claim 1, further comprising:
the second furnace body is arranged between the first furnace body and the liquid adding groove, the bottom of the second furnace body is communicated with the first furnace body through a radial flow channel, the second furnace body is communicated with the liquid adding groove, the bottom of the second furnace body is higher than the highest liquid level of the first furnace body, liquid flows into the second furnace body from the liquid adding groove, and when inert gas sprays refining agent, the second furnace body is used for carrying out preliminary degassing and deslagging on the liquid, and the liquid after preliminary degassing and deslagging flows into the first furnace body.
7. The energy-saving holding furnace for casting according to claim 1, wherein,
the liquid pump is a graphite impeller pump or a silicon nitride impeller pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710470262.8A CN107218812B (en) | 2017-06-20 | 2017-06-20 | Energy-saving heat preservation furnace for casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710470262.8A CN107218812B (en) | 2017-06-20 | 2017-06-20 | Energy-saving heat preservation furnace for casting |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107218812A CN107218812A (en) | 2017-09-29 |
| CN107218812B true CN107218812B (en) | 2023-05-23 |
Family
ID=59949863
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710470262.8A Active CN107218812B (en) | 2017-06-20 | 2017-06-20 | Energy-saving heat preservation furnace for casting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107218812B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2268910Y (en) * | 1995-10-13 | 1997-11-26 | 元富铝业股份有限公司 | Continuous aluminum melting and temperature holding furnace using gas fuel |
| EP0843020A1 (en) * | 1996-11-13 | 1998-05-20 | DANIELI & C. OFFICINE MECCANICHE S.p.A. | Double hearth electric arc furnace for continuous melting |
| CN201264075Y (en) * | 2008-07-31 | 2009-07-01 | 比亚迪股份有限公司 | Continuous casting metal melting furnace |
| CN101915501A (en) * | 2010-08-12 | 2010-12-15 | 浙江浩大工业炉有限公司 | Aluminum scrap recovery furnace |
| CN203454749U (en) * | 2013-09-13 | 2014-02-26 | 苏州达泰尔机械有限公司 | Loop heating system of aluminum alloy melting furnace |
| CN103924098A (en) * | 2014-04-02 | 2014-07-16 | 长沙有色冶金设计研究院有限公司 | Wet lead continuous refining furnace and refining method |
| CN204727937U (en) * | 2014-11-18 | 2015-10-28 | 林卫新 | Molten aluminium stove |
| CN207066124U (en) * | 2017-06-20 | 2018-03-02 | 浙江今飞凯达轮毂股份有限公司 | Energy-saving heat preserving stove is used in casting |
-
2017
- 2017-06-20 CN CN201710470262.8A patent/CN107218812B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2268910Y (en) * | 1995-10-13 | 1997-11-26 | 元富铝业股份有限公司 | Continuous aluminum melting and temperature holding furnace using gas fuel |
| EP0843020A1 (en) * | 1996-11-13 | 1998-05-20 | DANIELI & C. OFFICINE MECCANICHE S.p.A. | Double hearth electric arc furnace for continuous melting |
| CN201264075Y (en) * | 2008-07-31 | 2009-07-01 | 比亚迪股份有限公司 | Continuous casting metal melting furnace |
| CN101915501A (en) * | 2010-08-12 | 2010-12-15 | 浙江浩大工业炉有限公司 | Aluminum scrap recovery furnace |
| CN203454749U (en) * | 2013-09-13 | 2014-02-26 | 苏州达泰尔机械有限公司 | Loop heating system of aluminum alloy melting furnace |
| CN103924098A (en) * | 2014-04-02 | 2014-07-16 | 长沙有色冶金设计研究院有限公司 | Wet lead continuous refining furnace and refining method |
| CN204727937U (en) * | 2014-11-18 | 2015-10-28 | 林卫新 | Molten aluminium stove |
| CN207066124U (en) * | 2017-06-20 | 2018-03-02 | 浙江今飞凯达轮毂股份有限公司 | Energy-saving heat preserving stove is used in casting |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107218812A (en) | 2017-09-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10309725B2 (en) | Immersion heater for molten metal | |
| US9909808B2 (en) | System and method for degassing molten metal | |
| US9643247B2 (en) | Molten metal transfer and degassing system | |
| US11850657B2 (en) | System for melting solid metal | |
| US20140265068A1 (en) | System and method for component maintenance | |
| EP2677045A2 (en) | Device and method for removing impurities in aluminum melt | |
| CN102149832B (en) | Melt refiner | |
| CN107218812B (en) | Energy-saving heat preservation furnace for casting | |
| CN111644606A (en) | Lead-acid storage battery grid continuous casting lead liquid supply system | |
| CN207066124U (en) | Energy-saving heat preserving stove is used in casting | |
| JP2002146447A (en) | Degassing apparatus for non-ferrous metal | |
| JP4395482B2 (en) | Molten salt electrolysis method and molten salt electrolyzer | |
| NO168121B (en) | PROCEDURE FOR MELTING METAL SCRAP | |
| CN110484690A (en) | A kind of quick deslagging device of molten steel and its deslagging method | |
| CN212388089U (en) | Aluminium liquid heat preservation stove | |
| JP2004257715A (en) | Metal melting holding furnace | |
| JP4243711B2 (en) | Crucible furnace | |
| CN219703430U (en) | Ingot casting machine cooling device | |
| CN208517495U (en) | A kind of four Room degasification tank inner lining structures | |
| CN220079217U (en) | Electrolyte circulation device of silver electrolytic tank | |
| CN105290373A (en) | Molten aluminum standing tank easy to clean | |
| JP4299117B2 (en) | Method for electrolysis of molten metal chloride | |
| JP2010096401A (en) | Non-ferrous metal smelting furnace | |
| CN201102979Y (en) | Energy-saving strip steel hot dipping device | |
| JP4537661B2 (en) | Method for refining molten solder |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20181008 Address after: 321016 No. 800, Xian Hua South Street, Jinhua Industrial Park, Zhejiang. Applicant after: ZHEJIANG JINFEI KAIDA WHEEL Co.,Ltd. Applicant after: YUNNAN FUYUAN JINFEI WHEEL MANUFACTURING Co.,Ltd. Address before: 321016 No. 800, Xian Hua South Street, Jinhua Industrial Park, Zhejiang. Applicant before: ZHEJIANG JINFEI KAIDA WHEEL Co.,Ltd. |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |