CN220472256U - Heat preservation stove that liquid circulated was filtered - Google Patents

Abstract

The application discloses a heat preservation furnace capable of circularly filtering liquid, which comprises a hearth, a filtering piece and a first liquid driving device; the filter is arranged inside the hearth and divides the hearth into a first hearth and a second hearth, the first liquid driving device is arranged outside the hearth and used for driving liquid content to flow from the second hearth to the first hearth through the first liquid flow pipeline, and the first liquid driving device is used for being matched with the filter so as to realize circulating flow of the liquid content between the first hearth and the second hearth. The liquid content flows back into the first chamber from the second chamber through the first liquid driving device, flows to the second chamber under the driving of liquid level difference, and circulates in sequence to realize the closed-loop circulating filtering flow of the liquid content in the hearth, so that the aim of removing impurities by circulating filtering of the liquid content is fulfilled, meanwhile, the liquid content realizes homogenization of temperature and components after circulation, and the quality of cast castings is greatly improved.

Description

Heat preservation stove that liquid circulated was filtered

Technical Field

The utility model relates to the technical field of heat preservation furnaces, in particular to a heat preservation furnace with liquid capable of being circularly filtered.

Background

Alloy casting is a relatively common process for producing an alloy, which is an alloy in which a metal in a molten state is filled in a mold to obtain parts of various shapes. The inclusion and gas are easy to exist in the molten metal, and the common method for removing the inclusion and gas of the alloy solution is to carry out rotary degassing refining, and then transfer the treated aluminum liquid into a heat preservation furnace for casting. The method can remove most of oxidized inclusions with larger size and part of hydrogen dissolved in aluminum, but the oxidation of aluminum liquid is caused in the transfer process, the oxides are gradually enriched after entering the heat preservation furnace, and a large number of casting defects and even batch scrapping can be caused when the inclusions reach a certain concentration.

The traditional casting system mainly comprises a melting furnace, a heat preservation furnace, a tundish and a casting device. On one hand, the molten aluminum of the set of system needs to be transferred for a plurality of times when in actual use, molten liquid metal in the transfer process is easy to contact with air to cause oxidization or air suction, oxidized slag is easy to enter the casting along with the liquid metal, and the quality of the casting is greatly reduced. On the other hand, molten liquid metal is placed in the holding furnace for a longer period of time and remains relatively stationary in the holding furnace, exacerbating metal oxidation.

Disclosure of Invention

The utility model aims at least to overcome one of the problems, and provides a heat preservation furnace with liquid capable of being circularly filtered.

The technical scheme adopted by the utility model is as follows:

the application provides a heat preservation furnace capable of circularly filtering liquid, which comprises a furnace chamber, wherein the furnace chamber is used for storing liquid contents, and the heat preservation furnace further comprises a filtering piece and a first liquid driving device;

the filter is arranged inside the hearth and divides the hearth into a first chamber and a second chamber, and the filter is used for filtering liquid content flowing from the first chamber to the second chamber;

the first liquid driving device is arranged outside the hearth, the first liquid driving device comprises a first liquid flow pipeline, the first liquid flow pipeline comprises a first port and a second port, the first port is communicated with the first hearth, the second port is communicated with the second hearth, and the first liquid driving device is used for driving liquid content to flow from the second hearth to the first hearth through the first liquid flow pipeline;

as liquid content flows from the first chamber to the second chamber through the filter, a liquid level difference is formed between the first chamber and the second chamber, the liquid level difference further driving liquid content to flow from the first chamber to the second chamber through the filter;

the first liquid drive means cooperates with the filter element to effect a circulating flow of liquid content between the first and second chambers.

After the liquid content is added into the first chamber, the liquid content flows into the second chamber through the filter element, the liquid content flowing into the second chamber is clean liquid content for filtering out part of oxide impurities, on one hand, the clean liquid content can be used for carrying out casting operations of the next step, on the other hand, the clean liquid content which does not need to carry out casting operations of the next step, flows back into the first chamber from the second chamber through the first liquid driving device, flows to the second chamber under the driving of liquid level difference, and sequentially circulates to realize the circulating filtration flow of the liquid content in a closed loop in the hearth, so that the aim of removing impurities by circulating filtration of the liquid content is fulfilled, meanwhile, the liquid content is homogenized in temperature and composition after circulation, and the quality of cast castings is greatly improved.

In actual use, the liquid content can be aluminum liquid, oxides formed by the aluminum liquid in contact with air and impurities in the oxides can be blocked in the first chamber in continuous circulation, so that the cast aluminum piece is excellent in quality.

Further, the side wall of the hearth is recessed inwards to form a concave mounting groove, the concave mounting groove is arranged on the side wall of the first hearth, which is close to one side of the second hearth, or on the side wall of the second hearth, which is close to one side of the first hearth, or at the junction of the first hearth and the second hearth, and the concave mounting groove is used for mounting the first liquid driving device.

The concave mounting groove reduces the mounting size of the filter element on one hand, is beneficial to forming liquid level difference between the first chamber and the second chamber, reduces the mounting size of the first liquid driving device in the holding furnace on the other hand, and has more compact structure.

Further, a first hole is formed in one side, close to the first chamber, of the concave mounting groove, a second hole is formed in one side, close to the second chamber, of the concave mounting groove, a first port of the first liquid flow pipeline is formed in the first hole, and a second port of the first liquid flow pipeline is formed in the second hole.

The first hole and the second hole are arranged on one side, close to the hearth, close to the bottom wall.

The first hole and the second hole are close to the bottom wall of the hearth, so that circulating flow of liquid content at the lowest position in the hearth is facilitated, and the circulating flow effect of the liquid content is further improved.

Further, the first liquid driving device is an electromagnetic pump.

The electromagnetic pump provides circulating power for the liquid content flowing from the second chamber to the first chamber, has the characteristics of simple structure, good sealing performance, reliable operation, no need of shaft sealing and the like, and can greatly improve the performance of the heat preservation furnace.

When in actual use, the flow rate of the electromagnetic pump is adjusted to be matched with the flow rate of the liquid content at the filter element.

Further, a baffle plate is further arranged on the outer side of the concave mounting groove and used for protecting the first liquid driving device.

When in actual use, the baffle plate can be detached to mount, replace and maintain the first liquid driving device, and the device is safe, reliable and convenient to operate.

Further, the holding furnace further comprises a feeding groove, a discharging pipeline and a second liquid driving device, wherein the feeding groove is arranged on the chamber body of the first chamber and is communicated with the first chamber;

the second chamber is provided with a third hole, and the discharging pipeline is communicated with the chamber body of the second chamber through the third hole;

the second liquid driving device is arranged on the discharging pipeline and is used for driving liquid content out of the second chamber.

Further, the third hole is arranged on one side, close to the bottom wall, of the hearth.

Adding liquid content into the first chamber through the feed tank; in practical use, the feed chute can be a feed port or a feed pipeline.

Further, the holding furnace further comprises a discharging plug, and a fourth hole is further formed in the hearth and matched with the discharging plug and used for rapid discharging.

Further, the second liquid driving device is a quantitative electromagnetic pump, the second liquid driving device comprises a second liquid flow pipeline, the second liquid flow pipeline is arranged on the discharging pipeline and is communicated with the discharging pipeline, and the quantitative electromagnetic pump is used for quantitatively pumping liquid content out of the second chamber.

Further, the device also comprises a probe, a discharge hole is formed in the discharge pipeline, the probe is arranged on the discharge hole and is in electrical signal connection with the quantitative electromagnetic pump, and the probe is used for controlling the liquid level of liquid content in the discharge pipeline to be kept near the discharge hole;

the discharge port is arranged higher than the first chamber and/or the second chamber.

When the quantitative electromagnetic pump pumps out the liquid content from the second chamber through the discharge port, the liquid level in the discharge pipeline can be reduced, and the liquid level needs to be stabilized in order to keep the stable pumping out of the quantitative electromagnetic pump. The probe is connected with the quantitative electromagnetic pump through an electric signal, and when the probe detects that the liquid level is unstable or decreases, the quantitative electromagnetic pump changes or increases the pumping quantity to enable the liquid level to be stable and not overflow the discharge hole. Meanwhile, the formation of oxide inclusions in the pipeline during the output of the liquid content can be avoided.

When in actual use, the outlet height of the discharge port is higher than the highest liquid level height in the hearth, so as to prevent the liquid content of the holding furnace from overflowing during charging.

When in actual use, the heating device is also arranged on the discharging pipeline, and the heating device on the discharging pipeline is used for preventing the aluminum liquid from solidifying due to long-term static in the pipe.

Further, an installation boss is arranged on the inner side of the bottom wall of the hearth, at least one installation clamping groove is formed in the installation boss and the inner side of the furnace wall connected with the installation boss, the filter piece comprises at least one ceramic foam plate, and the ceramic foam plate is clamped in the hearth through the installation clamping groove.

The mounting clamping groove at the mounting boss part can enlarge the groove depth so as to ensure that the filter element is stably mounted in the furnace.

When the filter element comprises a plurality of ceramic foam plates, filter channels are formed between adjacent ceramic foam plates, and the plurality of ceramic foam plates can enhance the filtering effect.

Further, the furnace cover is arranged on the furnace cover, when the furnace cover is buckled with the hearth, the heating device is positioned in the first chamber and/or the second chamber, and the heating device is used for heating liquid contents in the first chamber and the second chamber.

The heating device can ensure the normal operation of the holding furnace.

Further, the heating device is a heating rod, a thermocouple temperature controller is connected with the heating rod through an electric signal, and the thermocouple temperature controller is matched with the heating rod, so that liquid contents in the first chamber and/or the second chamber are kept in a constant temperature state.

When in actual use, the heating rods are immersed heating rods, and the heating rods comprise a plurality of heating rods which are arranged at intervals. The thermocouple temperature controller connected with the heating rod can realize the intermittent heating and heat preservation effect.

Further, the furnace cover at least comprises a first furnace cover and a second furnace cover, wherein the first furnace cover is used for being buckled with the first chamber, and the second furnace cover is used for being buckled with the second chamber;

the first furnace cover is provided with a liquid level detector, and the liquid level detector is used for detecting the liquid level of liquid contents in the first chamber.

The liquid level detector can prevent the condition that the liquid content overflows the furnace body due to the fact that the pressure difference between the first chamber and the second chamber is increased due to the fact that the liquidity of the liquid content is reduced when the impurities of the filtering piece are accumulated to a certain degree.

Further, the filter piece comprises two ceramic foam plates, and the two ceramic foam plates are respectively arranged in the installation clamping groove at intervals.

When in actual use, the filter element can be replaced periodically, the replacement operation is simple, and the filter element can be pulled out from the mounting clamping groove.

Further, the furnace cover further comprises a third furnace cover, a fourth furnace cover and a fifth furnace cover, wherein the third furnace cover is used for being buckled with the feeding groove, the fourth furnace cover is used for being arranged above the filtering piece, and the fifth furnace cover is arranged above the concave mounting groove.

Further, the hearth comprises a furnace liner, a heat preservation layer sleeved on the outer side of the furnace liner and a furnace body shell, and the furnace body shell is arranged on the outer side of the heat preservation layer.

The furnace covers and the hearth are in a non-complete sealing structure, the furnace covers are arranged in a distributed mode, the furnace covers can be opened according to the needs, and the furnace covers are arranged in a separated mode according to the size of each compartment of the furnace body, so that the compartments are convenient to clean and filter parts are convenient to replace.

The holding furnace with the liquid capable of being circularly filtered can continuously assist casting production, and can also provide high-quality liquid contents for castings in a staged manner.

The beneficial effects of the utility model are as follows:

(1) After the liquid content is added into the first chamber, the liquid content flows into the second chamber through the filter element, flows back into the first chamber from the second chamber through the first liquid driving device, flows to the second chamber under the driving of liquid level difference, and circulates in sequence to realize the circulating filtration flow of the liquid content in a closed loop in the hearth, so that the aim of removing impurities by circulating filtration of the liquid content is fulfilled, meanwhile, the liquid content is homogenized in temperature and components after circulation, and the quality of cast castings is greatly improved.

(2) The concave mounting groove reduces the mounting size of the filter element on one hand, is beneficial to forming liquid level difference between the first chamber and the second chamber, reduces the mounting size of the first liquid driving device in the holding furnace on the other hand, and has more compact structure.

(3) The quantitative electromagnetic pump stabilizes the liquid level of the discharging pipeline, and can avoid the formation of oxide inclusion in the pipeline during the output of liquid content.

(4) The liquid level detector can prevent the impurity of the filter element from gathering to a certain degree, and the liquid content mobility is reduced, so that the pressure difference between the first chamber and the second chamber is increased, and the liquid content overflows the furnace body.

(5) The furnace covers and the hearth are in a non-complete sealing structure, the furnace covers are arranged in a distributed mode, the furnace covers can be opened according to the needs, and the furnace covers are arranged in a separated mode according to the size of each compartment of the furnace body, so that the compartments are convenient to clean and filter parts are convenient to replace.

Drawings

FIG. 1 is a schematic top view of a cyclic filterable holding furnace according to an embodiment of the present utility model;

FIG. 2 is a schematic cross-sectional view of A-A of FIG. 1;

FIG. 3 is a schematic cross-sectional view of the structure B-B of FIG. 1;

FIG. 4 is a schematic view of the shaft side structure of a heat preservation furnace capable of circularly filtering according to the embodiment of the utility model;

FIG. 5 is a schematic diagram of the shaft side structure of a heat preservation furnace capable of circularly filtering according to the embodiment of the utility model;

FIG. 6 is a schematic view of a top view of a furnace according to an embodiment of the present utility model;

FIG. 7 is a schematic view of the structure of the furnace in the axial direction according to an embodiment of the present utility model;

FIG. 8 is a schematic view of the structure of the furnace in the axial direction according to an embodiment of the present utility model.

The reference numerals in the drawings are as follows:

1. a furnace; 11. a first chamber; 12. a second chamber; 13. a concave mounting groove; 14. a feed chute; 15. a mounting boss; 151. installing a clamping groove; 101. a first hole; 102. a second hole; 103. a third hole; 104. a fourth hole; 105. a furnace pipe; 106. a heat preservation layer; 107. a furnace body shell; 108. a baffle; 2. a filter; 3. a first liquid driving device; 31. a first fluid flow line; 4. a discharge pipeline; 41. a discharge port; 5. a second liquid driving device; 51. a second fluid flow line; 6. a probe; 7. a furnace cover; 71. a first furnace cover; 72. a second furnace cover; 73. a third furnace cover; 74. a fourth furnace cover; 75. a fifth furnace cover; 8. a heating device; 9. and a discharge plug.

Detailed Description

The present utility model will be described in detail with reference to the accompanying drawings.

As shown in fig. 1 to 4, the application provides a heat preservation furnace capable of circularly filtering liquid, which comprises a hearth 1, wherein the hearth 1 is used for storing liquid content, and the heat preservation furnace also comprises a filtering piece 2 and a first liquid driving device 3;

the filter element 2 is arranged inside the furnace chamber 1 and divides the furnace chamber 1 into a first chamber 11 and a second chamber 12, and the filter element 2 is used for filtering liquid content flowing from the first chamber 11 to the second chamber 12;

the first liquid driving device 3 is arranged outside the hearth 1, the first liquid driving device 3 comprises a first liquid flow pipeline 31, the first liquid flow pipeline 31 comprises a first port and a second port, the first port is communicated with the first chamber 11, the second port is communicated with the second chamber 12, and the first liquid driving device 3 is used for driving liquid content to flow from the second chamber 12 to the first chamber 11 through the first liquid flow pipeline 31;

as the liquid content flows through the filter element 2 from the first chamber 11 to the second chamber 12, a liquid level difference is formed between the first chamber 11 and the second chamber 12, which liquid level difference further drives the liquid content to flow through the filter element 2 from the first chamber 11 to the second chamber 12;

the first liquid driving means 3 cooperates with the filter element 2 to achieve a circulating flow of liquid content between the first and second chambers 11, 12.

After the liquid content is added into the first chamber 11, the liquid content flows into the second chamber 12 through the filter element 2, the liquid content flowing into the second chamber 12 is clean liquid content for filtering out part of oxide impurities, on one hand, the clean liquid content can be used for carrying out casting operations of the next step, on the other hand, the clean liquid content which does not need to carry out casting operations of the next step, and the like flows back into the first chamber 11 from the second chamber 12 through the first liquid driving device 3 and flows into the second chamber 12 under the driving of liquid level difference, and the liquid content circulates in sequence to realize the circulating filtration flow of the liquid content in a closed loop in the hearth 1, so that the aim of removing impurities by circulating filtration of the liquid content is fulfilled, meanwhile, the liquid content realizes homogenization of temperature and components after circulation, and the cast casting quality is greatly improved.

In actual use, the liquid content can be aluminum liquid, and oxides formed by the aluminum liquid in contact with air and impurities in the oxides can be blocked in the first chamber 11 in continuous circulation, so that the cast aluminum piece has excellent quality.

As shown in fig. 4, in the present embodiment, the side wall of the furnace 1 is recessed inward and forms a concave mounting groove 13, the concave mounting groove 13 is provided at the junction of the first chamber 11 and the second chamber 12, and the concave mounting groove 13 is used for mounting the first liquid driving device 3.

In other embodiments, the female mounting groove 13 is provided on a side wall of the first chamber 11 on a side thereof adjacent to the second chamber 12, or on a side wall of the second chamber 12 on a side thereof adjacent to the first chamber 11.

The concave mounting groove 13 reduces the mounting size of the filter element 2, is beneficial to forming the liquid level difference between the first chamber 11 and the second chamber 12, reduces the mounting size of the first liquid driving device 3 in the holding furnace, and is more compact in structure.

In the present embodiment, a first hole 101 is disposed on a side of the concave mounting groove 13 adjacent to the first chamber 11, a second hole 102 is disposed on a side of the concave mounting groove 13 adjacent to the second chamber 12, a first port of the first liquid flow line 31 is disposed on the first hole 101, and a second port of the first liquid flow line 31 is disposed on the second hole 102.

The first hole 101 and the second hole 102 are arranged on the side of the furnace 1 near the bottom wall.

The first hole 101 and the second hole 102 are arranged near the bottom wall of the hearth 1, so that the circulating flow of the liquid content at the lowest part in the hearth 1 is facilitated, and the circulating flow effect of the liquid content is further improved.

In this embodiment, the first liquid driving device 3 is an electromagnetic pump.

The electromagnetic pump provides circulating power for the liquid content flowing from the second chamber 12 to the first chamber 11, has the characteristics of simple structure, good tightness, reliable operation, no need of shaft sealing and the like, and can greatly improve the performance of the heat preservation furnace.

In actual use, the flow rate of the electromagnetic pump is adjusted to match the flow rate of the liquid content at the filter element 2.

In this embodiment, a baffle 108 is further disposed outside the concave mounting groove 13, and the baffle 108 is used to protect the first liquid driving device 3.

In actual use, the baffle plate 108 can be detached to mount, replace and maintain the first liquid driving device 3, so that the operation is safe and reliable and convenient.

In this embodiment, the holding furnace further includes a feed chute 14, a discharge pipeline 4, and a second liquid driving device 5, where the feed chute 14 is disposed on the chamber body of the first chamber 11 and is in communication with the first chamber 11;

the second chamber 12 is provided with a third hole 103, and the discharging pipeline 4 is communicated with the chamber body of the second chamber 12 through the third hole 103;

a second liquid drive 5 is arranged on the discharge line 4, the second liquid drive 5 being arranged to drive liquid content out of the second chamber 12.

In the present embodiment, the third hole 103 is provided at a side near the bottom wall of the furnace 1.

Adding liquid content into the first chamber 11 through the feed tank 14; in practice, feed tank 14 may be a feed port or feed line.

As shown in fig. 5 and 8, in this embodiment, the holding furnace further includes a discharge plug 9, and the furnace chamber 1 is further provided with a fourth hole 104, where the fourth hole 104 cooperates with the discharge plug 9 for rapid discharging.

In this embodiment, the second liquid driving device 5 is a quantitative electromagnetic pump, and the second liquid driving device 5 includes a second liquid flow pipeline 51, where the second liquid flow pipeline 51 is disposed on the discharging pipeline 4 and is in communication with the discharging pipeline 4, and the quantitative electromagnetic pump is used for quantitatively pumping out the liquid content from the second chamber 12.

In this embodiment, the device further comprises a probe 6, a discharge port 41 is formed on the discharge pipeline 4, the probe 6 is arranged on the discharge port 41, the probe 6 is in electrical signal connection with the quantitative electromagnetic pump, and the probe 6 is used for controlling the liquid level of the liquid content in the discharge pipeline 4 to be kept near the discharge port 41;

the tap 41 is arranged higher than the first chamber 11 and/or the second chamber 12.

When the dosing electromagnetic pump pumps out the liquid content from the second chamber 12 through the discharge opening 41, the liquid level in the discharge line 4 is lowered, and the liquid level needs to be stabilized in order to keep the dosing electromagnetic pump stably pumping out. The probe 6 is electrically connected to a constant-volume electromagnetic pump, and when the probe 6 detects that the liquid level is unstable or lowered, the constant-volume electromagnetic pump changes or increases the pumping amount so that the liquid level is stable and does not overflow the discharge port 41. Meanwhile, the formation of oxide inclusions in the pipeline during the output of the liquid content can be avoided.

In actual use, the outlet height of the discharge port 41 is higher than the highest liquid level height in the hearth 1, so as to prevent the liquid content of the holding furnace from overflowing during charging.

In actual use, the heating device 8 is also arranged on the discharging pipeline 4, and the heating device 8 on the discharging pipeline 4 is used for preventing the aluminum liquid from solidifying due to long-term static in the pipe.

As shown in fig. 6 and 7, in this embodiment, an installation boss 15 is disposed on the inner side of the bottom wall of the furnace chamber 1, two installation slots 151 are disposed on the inner side of the installation boss 15 and the wall connected to the installation boss 15, and the filter element 2 comprises two ceramic foam plates, which are clamped in the furnace chamber 1 by the installation slots 151. A filtering channel is formed between two adjacent ceramic foam plates, and a plurality of ceramic foam plates can enhance the filtering effect.

The mounting groove 151 at the mounting boss 15 portion may increase the groove depth to allow the filter element 2 to be stably mounted in the furnace.

In this embodiment, the furnace further comprises a furnace cover 7 and a heating device 8, wherein the heating device 8 is disposed on the furnace cover 7, and when the furnace cover 7 is buckled with the furnace chamber 1, the heating device 8 is located in the first chamber 11 and/or the second chamber 12, and the heating device 8 is used for heating the liquid contents in the first chamber 11 and the second chamber 12.

The heating device 8 can ensure the normal operation of the holding furnace.

In this embodiment, the heating device 8 is a heating rod, and the heating rod is electrically connected with a thermocouple temperature controller, and the thermocouple temperature controller is matched with the heating rod, so that the liquid content in the first chamber 11 and/or the second chamber 12 is kept in a constant temperature state.

In this embodiment, the heating rods are immersed heating rods, the heating rods include eight heating rods, the eight heating rods are divided into two groups, and the two groups of heating rods are respectively arranged on the first furnace cover 71 and the second furnace cover 72 at intervals. The thermocouple temperature controller connected with the heating rod can realize the intermittent heating and heat preservation effect.

In this embodiment, the furnace cover 7 includes at least a first furnace cover 71 and a second furnace cover 72, the first furnace cover 71 is used for being buckled with the first chamber 11, and the second furnace cover 72 is used for being buckled with the second chamber 12;

the first furnace cover 71 is provided with a liquid level detector for detecting the liquid level of the liquid content in the first chamber 11.

The liquid level detector can prevent the liquid content from overflowing the furnace body due to the fact that the liquid content is increased in pressure difference between the first chamber 11 and the second chamber 12 due to the fact that the impurities in the filter element 2 are accumulated to a certain degree and the fluidity of the liquid content is reduced.

In this embodiment, the filter element 2 includes two ceramic foam plates, and the two ceramic foam plates are respectively disposed in the mounting slots 151 at intervals.

In actual use, the filter element 2 can be replaced periodically, the replacement operation is simple, and the filter element 2 can be pulled out from the mounting clamping groove 151.

In this embodiment, the furnace cover 7 further includes a third furnace cover 73, a fourth furnace cover 74, and a fifth furnace cover 75, where the third furnace cover 73 is used to be fastened to the feed chute 14, the fourth furnace cover 74 is used to be disposed above the filter element 2, and the fifth furnace cover 75 is disposed above the concave mounting groove 13.

As shown in fig. 3, in the present embodiment, the furnace 1 includes a furnace 105, a heat insulating layer 106 covering the outside of the furnace 105, and a furnace housing 107, and the furnace housing 107 is disposed outside the heat insulating layer 106.

The furnace covers 7 and the hearth 1 are in a non-complete sealing structure, the furnace covers 7 are arranged in a distributed mode, each furnace cover 7 can be opened according to the needs, each furnace cover 7 is arranged in a separated mode according to the size of each compartment of the furnace body, and the compartments are convenient to clean and replace the filter element 2.

The holding furnace with the liquid capable of being circularly filtered can continuously assist casting production, and can also provide high-quality liquid contents for castings in a staged manner.

The steps of using the holding furnace provided by the utility model comprise: firstly preheating the whole system, and heating the furnace body temperature of a holding furnace to a set temperature; molten aluminum is injected into a first chamber 11 of the holding furnace through a feed chute 14, and after the molten aluminum enters a second chamber 12 through a filter element 2, a first liquid driving device 3 is started to realize the circulation of the molten aluminum from the second chamber 12 to the first chamber 11. The purified aluminum liquid is output through the second liquid driving device 5 and the discharge hole 41, so that quantitative pouring or low-pressure casting can be performed.

The foregoing description is only of the preferred embodiments of the present utility model, and is not intended to limit the scope of the utility model, but rather is intended to cover all equivalent structures as modifications within the scope of the utility model, either directly or indirectly, as may be contemplated by the present utility model.

Claims (10)

1. The heat preservation furnace capable of circularly filtering liquid comprises a furnace chamber, wherein the furnace chamber is used for storing liquid content, and is characterized by further comprising a filtering piece and a first liquid driving device;

the filter is arranged inside the hearth and divides the hearth into a first chamber and a second chamber, and the filter is used for filtering liquid content flowing from the first chamber to the second chamber;

the first liquid driving device is arranged outside the hearth, the first liquid driving device comprises a first liquid flow pipeline, the first liquid flow pipeline comprises a first port and a second port, the first port is communicated with the first hearth, the second port is communicated with the second hearth, and the first liquid driving device is used for driving liquid content to flow from the second hearth to the first hearth through the first liquid flow pipeline;

as liquid content flows from the first chamber to the second chamber through the filter, a liquid level difference is formed between the first chamber and the second chamber, the liquid level difference further driving liquid content to flow from the first chamber to the second chamber through the filter;

the first liquid drive means cooperates with the filter element to effect a circulating flow of liquid content between the first and second chambers.

2. A liquid circulative filterable holding furnace according to claim 1 wherein side walls of the hearth are recessed inwardly and form concave mounting grooves provided on side walls of the first chamber adjacent to the second chamber, or on side walls of the second chamber adjacent to the first chamber, or at junctions of the first chamber and the second chamber, the concave mounting grooves being for mounting the first liquid driving means.

3. The holding furnace capable of circularly filtering liquid according to claim 2, wherein a first hole is formed in one side, close to the first chamber, of the concave mounting groove, a second hole is formed in one side, close to the second chamber, of the concave mounting groove, a first port of the first liquid flow pipeline is formed in the first hole, and a second port of the first liquid flow pipeline is formed in the second hole;

the first hole and the second hole are arranged on one side, close to the hearth, close to the bottom wall.

4. The holding furnace for circulating filtration of liquid of claim 1 further comprising a feed chute, a discharge line and a second liquid drive, said feed chute being disposed on the body of said first chamber and in communication with said first chamber;

the second chamber is provided with a third hole, and the discharging pipeline is communicated with the chamber body of the second chamber through the third hole;

the second liquid driving device is arranged on the discharging pipeline and is used for driving liquid content out of the second chamber.

5. The oven of claim 4 wherein said first liquid driving means is an electromagnetic pump;

the second liquid driving device is a quantitative electromagnetic pump, the second liquid driving device comprises a second liquid flow pipeline, the second liquid flow pipeline is arranged on the discharging pipeline and is communicated with the discharging pipeline, and the quantitative electromagnetic pump is used for quantitatively pumping liquid content out of the second chamber.

6. The holding furnace capable of circularly filtering liquid according to claim 5, further comprising a probe, wherein a discharge hole is formed on the discharge pipe, the probe is arranged on the discharge hole, the probe is electrically connected with the quantitative electromagnetic pump, and the probe is used for controlling the liquid level of liquid content in the discharge pipe to be kept near the discharge hole;

the discharge port is arranged higher than the first chamber and/or the second chamber.

7. The heat preservation furnace capable of circularly filtering liquid according to claim 1, wherein a mounting boss is arranged on the inner side of the bottom wall of the furnace chamber, at least one mounting clamping groove is arranged on the mounting boss and the inner side of a furnace wall connected with the mounting boss, and the filtering piece comprises at least one ceramic foam plate which is clamped in the furnace chamber through the mounting clamping groove.

8. A liquid-circulative filterable holding furnace according to claim 1 further comprising a furnace cover and heating means provided on the furnace cover, the heating means being located in the first and/or second chambers when the furnace cover is engaged with the furnace chamber, the heating means being for heating the liquid contents in the first and second chambers.

9. The holding furnace capable of circularly filtering liquid according to claim 8, wherein the heating device is a heating rod, a thermocouple temperature controller is electrically connected to the heating rod, and the thermocouple temperature controller is matched with the heating rod, so that the liquid content in the first chamber and/or the second chamber is kept in a constant temperature state.

10. The heat preservation furnace capable of circularly filtering liquid as claimed in claim 8, wherein the furnace cover at least comprises a first furnace cover and a second furnace cover, the first furnace cover is used for being buckled with the first chamber, and the second furnace cover is used for being buckled with the second chamber;

the first furnace cover is provided with a liquid level detector, and the liquid level detector is used for detecting the liquid level of liquid contents in the first chamber.