Heat preservation furnace capable of circularly filtering liquid

Abstract

The invention discloses a heat preservation furnace capable of circularly filtering liquid. The heat preservation furnace comprises a hearth, a filtering piece and a first liquid driving device. The filter part is arranged in the hearth and divides the hearth into a first chamber and a second chamber, the first liquid driving device is arranged outside the hearth, the first liquid driving device is used for driving liquid contents to flow from the second chamber to the first chamber through the first liquid flow pipeline, and the first liquid driving device is used for being matched with the filter part; and therefore, the liquid contents can circularly flow between the first chamber and the second chamber. The liquid content flows back to the first chamber from the second chamber through the first liquid driving device and flows to the second chamber under the driving of the liquid level difference, and the liquid content is circulated in sequence to realize closed-loop circulating filtration flowing of the liquid content in the hearth, so that the aim of circulating filtration and inclusion removal of the liquid content is fulfilled; and meanwhile, temperature and component homogenization is achieved after the liquid content is circulated, and the quality of a cast casting is greatly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of holding furnaces, and in particular to a holding furnace with liquid circulation and filtration. Background Art

[0002] Alloy casting is a relatively common processing technology for alloys. Alloy casting refers to filling molten metal into a mold to obtain various shaped alloy parts. Alloy casting is widely used in the processing of product components such as automobiles, digital products, electronics, and national defense industries. Inclusions and gases are likely to exist in the molten metal. The commonly used method to remove inclusions and gases in the alloy solution is to perform rotary degassing refining, and then transfer the treated aluminum liquid into a holding furnace for casting. This method can remove most of the relatively large-sized oxide inclusions and part of the hydrogen dissolved in aluminum. However, since the aluminum liquid will be oxidized during the transfer process, and these oxides will gradually accumulate after entering the holding furnace. When the inclusions reach a certain concentration, it will cause a large number of casting defects or even batch scrapping.

[0003] The traditional casting system mainly consists of a melting furnace, a holding furnace, a tundish, and a casting device. On the one hand, during actual use of this set of systems, the aluminum liquid needs to be transferred multiple times. During the transfer process, the molten liquid metal is likely to come into contact with air and cause oxidation or gas absorption. And the oxidized slag is likely to enter the casting along with the liquid metal, greatly reducing the quality of the casting. On the other hand, the molten liquid metal is placed in the holding furnace for a long time and remains relatively stationary in the holding furnace, which exacerbates the oxidation of the metal. Summary of the Invention

[0004] In view of the above problems, the present invention proposes at least one solution, which is a holding furnace with liquid circulation and filtration.

[0005] The technical solution adopted by the present invention is as follows:

[0006] The present application provides a holding furnace with liquid circulation and filtration, including a furnace chamber for storing liquid contents. The holding furnace further includes a filter element and a first liquid driving device;

[0007] The filter element is arranged inside the furnace chamber and divides the furnace chamber into a first chamber and a second chamber. The filter element is used to filter the liquid contents flowing from the first chamber to the second chamber;

[0008] The first liquid driving device is arranged outside the furnace chamber. The first liquid driving device includes a first liquid flow pipeline, and the first liquid flow pipeline includes a first port and a second port. The first port is communicated with the first chamber, and the second port is communicated with the second chamber. The first liquid driving device is used to drive the liquid contents to flow from the second chamber to the first chamber through the first liquid flow pipeline;

[0009] When the liquid content flows from the first chamber to the second chamber through the filter element, a liquid level difference is formed between the first chamber and the second chamber, and the liquid level difference further drives the liquid content to flow from the first chamber to the second chamber through the filter element;

[0010] The first liquid driving device cooperates with the filter element to realize the cyclic flow of the liquid content between the first chamber and the second chamber.

[0011] After the liquid content is added to the first chamber, it flows into the second chamber through the filter element. The liquid content flowing into the second chamber is clean liquid content with some oxide impurities filtered out. On the one hand, the clean liquid content can be used for the next casting operation, etc. On the other hand, the clean liquid content that does not need to be used for the next casting operation, etc. flows back from the second chamber to the first chamber through the first liquid driving device and flows towards the second chamber under the drive of the liquid level difference, and circulates in turn to realize the closed-loop cyclic filtration flow of the liquid content in the furnace chamber, so as to achieve the purpose of cyclic filtration of the liquid content to remove inclusions. At the same time, the liquid content is homogenized in temperature and composition after circulation, and the quality of the castings is greatly improved.

[0012] In actual use, the liquid content can be aluminum liquid. The oxides formed by the contact of the aluminum liquid with the air and the impurities therein can be blocked in the first chamber during continuous circulation, so that the quality of the cast aluminum parts is excellent.

[0013] Furthermore, the side wall of the furnace chamber is recessed inward to form a concave mounting groove. The concave mounting groove is arranged on the side wall of the first chamber close to the second chamber, or on the side wall of the second chamber close to the first chamber, or at the junction of the first chamber and the second chamber. The concave mounting groove is used to mount the first liquid driving device.

[0014] On the one hand, the concave mounting groove reduces the mounting size of the filter element, which is beneficial to forming a liquid level difference between the first chamber and the second chamber. On the other hand, it reduces the mounting size of the first liquid driving device in the holding furnace, and the structure is more compact.

[0015] Furthermore, a first hole is arranged on the side of the concave mounting groove close to the first chamber, and a second hole is arranged on the side of the concave mounting groove close to the second chamber. The first port of the first liquid flow pipeline is arranged on the first hole, and the second port of the first liquid flow pipeline is arranged on the second hole.

[0016] The first hole and the second hole are arranged on the side close to the bottom wall of the furnace chamber.

[0017] The first hole and the second hole are arranged close to the bottom wall of the furnace chamber to facilitate the circulating flow of the liquid content at the lowest part inside the furnace chamber and further improve the circulating flow effect of the liquid content.

[0018] Furthermore, the first liquid driving device is an electromagnetic pump.

[0019] The electromagnetic pump provides circulating power for the liquid content to flow from the second chamber to the first chamber. The electromagnetic pump has a simple structure, and also has characteristics such as good sealing performance, reliable operation, and no need for shaft sealing, which can greatly improve the performance of the holding furnace.

[0020] During actual use, adjust the flow rate of the electromagnetic pump to match the flow rate of the liquid content at the filter element.

[0021] Furthermore, a baffle is also arranged outside the concave mounting groove, and the baffle is used to protect the first liquid driving device.

[0022] During actual use, the baffle can be removed to install, replace, and repair the first liquid driving device, which is safe, reliable, and convenient to operate.

[0023] Furthermore, the holding furnace further includes a feed trough, a discharge pipeline, and a second liquid driving device. The feed trough is arranged on the chamber body of the first chamber and is communicated with the first chamber;

[0024] A third hole is arranged on the second chamber, and the discharge pipeline is communicated with the chamber body of the second chamber through the third hole;

[0025] The second liquid driving device is arranged on the discharge pipeline, and the second liquid driving device is used to drive the liquid content out of the second chamber.

[0026] Furthermore, the third hole is arranged on the side close to the bottom wall of the furnace chamber.

[0027] Add liquid content into the first chamber through the feed trough; during actual use, the feed trough can be a feed hole or a feed pipeline.

[0028] Furthermore, the holding furnace further includes a discharge plug. A fourth hole is also arranged on the furnace chamber, and the fourth hole cooperates with the discharge plug for rapid discharging.

[0029] Furthermore, the second liquid driving device is a metering electromagnetic pump. The second liquid driving device includes a second liquid flow pipeline, and the second liquid flow pipeline is arranged on the discharge pipeline and is communicated with the discharge pipeline. The metering electromagnetic pump is used to pump out the liquid content from the second chamber quantitatively.

[0030] Further, it further includes a probe. An outlet is formed on the discharge pipeline, and the probe is arranged on the outlet. The probe is electrically connected to the metering electromagnetic pump, and the probe is used to control the liquid level of the liquid content in the discharge pipeline to be maintained near the outlet.

[0031] The outlet is arranged higher than the first chamber and / or the second chamber.

[0032] When the metering electromagnetic pump pumps the liquid content out of the second chamber through the outlet, the liquid level in the discharge pipeline will decrease. To keep the metering electromagnetic pump pumping stably, the liquid level needs to be stabilized. The probe is electrically connected to the metering electromagnetic pump. When the probe detects that the liquid level is unstable or decreasing, the metering electromagnetic pump changes or increases the pumping volume to make the liquid level stable and not overflow the outlet. At the same time, oxidation inclusions formed in the pipeline during the output of the liquid content can be avoided.

[0033] In actual use, the outlet height of the outlet is higher than the highest liquid level height in the furnace chamber to prevent the liquid content from overflowing when the holding furnace is being charged.

[0034] In actual use, a heating device is also provided on the discharge pipeline. The heating device on the discharge pipeline is used to prevent the aluminum liquid from solidifying due to long-term stillness in the pipeline.

[0035] Further, an installation boss is arranged on the inner side of the bottom wall of the furnace chamber. At least one installation slot is arranged on the installation boss and the inner side of the furnace wall connected to the installation boss. The filter element includes at least one ceramic foam board, and the ceramic foam board is clamped in the furnace chamber through the installation slot.

[0036] The installation slot in the part of the installation boss can increase the slot depth to stably install the filter element in the furnace.

[0037] When the filter element includes multiple ceramic foam boards, a filtering channel will be formed between adjacent ceramic foam boards, and multiple ceramic foam boards can enhance the filtering effect.

[0038] Further, it further includes a furnace cover and a heating device. The heating device is arranged on the furnace cover. When the furnace cover is buckled with the furnace chamber, the heating device is located in the first chamber and / or the second chamber, and the heating device is used to heat the liquid content in the first chamber and the second chamber.

[0039] The heating device can ensure the normal operation of the holding furnace.

[0040] Further, the heating device is a heating rod. The heating rod is electrically connected to a thermocouple temperature controller, and the thermocouple temperature controller cooperates with the heating rod to keep the liquid content in the first chamber and / or the second chamber at a constant temperature.

[0041] In actual use, the heating rod is an immersion heating rod, and there are multiple heating rods arranged at intervals. The thermocouple temperature controller connected to the heating rod can achieve intermittent heating and heat preservation effects.

[0042] Furthermore, the furnace cover at least includes a first furnace cover and a second furnace cover. The first furnace cover is used to buckle with the first chamber, and the second furnace cover is used to buckle with the second chamber.

[0043] A liquid level height detector is provided on the first furnace cover, and the liquid level height detector is used to detect the liquid level height of the liquid content in the first chamber.

[0044] The liquid level height detector can prevent the situation where when the inclusions of the filter element accumulate to a certain extent, the fluidity of the liquid content decreases, resulting in an increase in the pressure difference between the first chamber and the second chamber, causing the liquid content to overflow from the furnace body.

[0045] Furthermore, the filter element includes two ceramic foam plates, and the two ceramic foam plates are respectively arranged at intervals in the installation card slot.

[0046] In actual use, the filter element can be replaced regularly, and the replacement operation is simple. Just pull out the filter element from the installation card slot.

[0047] Furthermore, the furnace cover further includes a third furnace cover, a fourth furnace cover, and a fifth furnace cover. The third furnace cover is used to buckle with the feed tank, the fourth furnace cover is used to be arranged above the filter element, and the fifth furnace cover is arranged above the concave installation groove.

[0048] Furthermore, the furnace chamber includes a furnace lining, a heat preservation layer wrapped outside the furnace lining, and a furnace body shell, and the furnace body shell is arranged outside the heat preservation layer.

[0049] A non-fully sealed structure is used between the furnace cover and the furnace chamber. The furnace cover is divided into parts, and each furnace cover can be opened as needed. And each furnace cover is placed separately according to the size of each compartment of the furnace body, which is convenient for cleaning the compartment and replacing the filter element.

[0050] The heat preservation furnace with liquid recyclable filtration provided by the present invention can continuously assist in casting production, or can stagewise provide high-quality liquid content for the casting.

[0051] The beneficial effects of the present invention are:

[0052] (1) After the liquid content is added to the first chamber, it flows into the second chamber through the filter element. The liquid content flows back from the second chamber to the first chamber through the first liquid driving device and flows towards the second chamber under the drive of the liquid level difference, circulating in turn to achieve the closed-loop circulating filtration flow of the liquid content in the furnace chamber, so as to achieve the purpose of circulating filtration of the liquid content to remove inclusions. At the same time, the temperature and composition of the liquid content are homogenized after circulation, and the quality of the castings is greatly improved.

[0053] (2) On the one hand, the concave installation groove reduces the installation size of the filter element, which is conducive to forming a liquid level difference between the first chamber and the second chamber. On the other hand, it reduces the installation size of the first liquid driving device in the holding furnace, and the structure is more compact.

[0054] (3) The metering electromagnetic pump stabilizes the liquid level of the discharge pipeline and can avoid the formation of oxidation inclusions in the pipeline when the liquid content is output.

[0055] (4) The liquid level height detector can prevent the situation that when the inclusions of the filter element accumulate to a certain extent, the fluidity of the liquid content decreases, the pressure difference between the first chamber and the second chamber increases, and the liquid content overflows from the furnace body.

[0056] (5) A non-fully sealed structure is used between the furnace cover and the furnace chamber. The furnace cover is divided into parts, and each furnace cover can be opened as needed. And each furnace cover is placed separately according to the size of each area of the furnace body, which is convenient for cleaning the area and replacing the filter element. Brief Description of the Drawings

[0057] Figure 1 is a schematic structural diagram of the recyclable filtration holding furnace according to an embodiment of the present invention in a top view direction;

[0058] Figure 2 is Figure 1 the sectional structural diagram of A-A in

[0059] Figure 3 is Figure 1 the sectional structural diagram of B-B in

[0060] Figure 4 is a schematic axonometric structural diagram of the recyclable filtration holding furnace according to an embodiment of the present invention;

[0061] Figure 5 is a schematic axonometric structural diagram of the recyclable filtration holding furnace according to an embodiment of the present invention;

[0062] Figure 6 is a schematic structural diagram of the furnace chamber according to an embodiment of the present invention in a top view direction;

[0063] Figure 7 is a schematic axonometric structural diagram of the furnace chamber according to an embodiment of the present invention;

[0064] Figure 8 It is a schematic structural diagram of the furnace in the axial side direction of the embodiment of the present invention.

[0065] The reference numerals in the figure are as follows:

[0066] 1. Furnace; 11. First chamber; 12. Second chamber; 13. Concave mounting groove; 14. Feed chute; 15. Mounting boss; 151. Mounting card slot; 101. First hole; 102. Second hole; 103. Third hole; 104. Fourth hole; 105. Furnace liner; 106. Heat insulation layer; 107. Furnace body shell; 108. Baffle; 2. Filter element; 3. First liquid driving device; 31. First liquid flow pipeline; 4. Discharge pipeline; 41. Discharge port; 5. Second liquid driving device; 51. Second liquid flow pipeline; 6. Probe; 7. Furnace cover; 71. First furnace cover; 72. Second furnace cover; 73. Third furnace cover; 74. Fourth furnace cover; 75. Fifth furnace cover; 8. Heating device; 9. Discharge plug. Detailed implementation manners

[0067] Next, the present invention will be described in detail with reference to the accompanying drawings.

[0068] As Figures 1 to 4 shown, the present application provides a heat-insulating furnace with liquid recyclable filtration, including a furnace 1 for storing liquid contents, and the heat-insulating furnace further includes a filter element 2 and a first liquid driving device 3;

[0069] The filter element 2 is arranged inside the furnace 1 and divides the furnace 1 into a first chamber 11 and a second chamber 12, and the filter element 2 is used for filtering the liquid contents flowing from the first chamber 11 to the second chamber 12;

[0070] The first liquid driving device 3 is arranged outside the furnace 1, the first liquid driving device 3 includes a first liquid flow pipeline 31, the first liquid flow pipeline 31 includes 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 the liquid contents to flow from the second chamber 12 to the first chamber 11 through the first liquid flow pipeline 31;

[0071] When the liquid contents flow from the first chamber 11 to the second chamber 12 through the filter element 2, a liquid level difference is formed between the first chamber 11 and the second chamber 12, and the liquid level difference further drives the liquid contents to flow from the first chamber 11 to the second chamber 12 through the filter element 2;

[0072] The first liquid driving device 3 cooperates with the filter element 2 to realize the circulating flow of the liquid contents between the first chamber 11 and the second chamber 12.

[0073] After the liquid content is added into the first chamber 11, it flows into the second chamber 12 through the filter element 2. The liquid content flowing into the second chamber 12 is clean liquid content with some oxide impurities filtered out. On the one hand, the clean liquid content can be used for the next step of casting and other operations. On the other hand, the clean liquid content that does not need to be used for the next step of casting and other operations flows back into the first chamber 11 from the second chamber 12 through the first liquid driving device 3 and flows towards the second chamber 12 under the drive of the liquid level difference, circulating in turn to achieve the closed-loop circulating filtration flow of the liquid content in the furnace chamber 1, so as to achieve the purpose of circulating filtration of the liquid content to remove inclusions. At the same time, the liquid content is homogenized in terms of temperature and composition after circulation, and the quality of the castings is greatly improved.

[0074] In actual use, the liquid content can be molten aluminum. The oxides formed when the molten aluminum contacts the air and the impurities therein can be blocked in the first chamber 11 during continuous circulation, so that the quality of the cast aluminum parts is excellent.

[0075] As Figure 4 shown, in this embodiment, the side wall of the furnace chamber 1 is recessed inward to form a concave mounting groove 13. The concave mounting groove 13 is arranged at the junction of the first chamber 11 and the second chamber 12, and the concave mounting groove 13 is used to mount the first liquid driving device 3.

[0076] In other embodiments, the concave mounting groove 13 is arranged on the side wall of the first chamber 11 close to the second chamber 12, or is arranged on the side wall of the second chamber 12 close to the first chamber 11.

[0077] The concave mounting groove 13 reduces the mounting size of the filter element 2 on the one hand, which is beneficial to forming a liquid level difference between the first chamber 11 and the second chamber 12. On the other hand, it reduces the mounting size of the first liquid driving device 3 in the holding furnace, and the structure is more compact.

[0078] In this embodiment, a first hole 101 is arranged on the side of the concave mounting groove 13 close to the first chamber 11, and a second hole 102 is arranged on the side of the concave mounting groove 13 close to the second chamber 12. The first port of the first liquid flow pipeline 31 is arranged on the first hole 101, and the second port of the first liquid flow pipeline 31 is arranged on the second hole 102.

[0079] The first hole 101 and the second hole 102 are arranged on the side close to the bottom wall of the furnace chamber 1.

[0080] Arranging the first hole 101 and the second hole 102 close to the bottom wall of the furnace chamber 1 facilitates the circulating flow of the liquid content at the lowest part in the furnace chamber 1 and further improves the circulating flow effect of the liquid content.

[0081] In this embodiment, the first liquid driving device 3 is an electromagnetic pump.

[0082] The electromagnetic pump provides circulating power for the liquid content to flow from the second chamber 12 to the first chamber 11. The electromagnetic pump has a simple structure, and also has characteristics such as good sealing performance, reliable operation, and no need for shaft seals, which can greatly improve the performance of the holding furnace.

[0083] In actual use, adjust the flow rate of the electromagnetic pump to match the flow rate of the liquid content at the filter element 2.

[0084] In this embodiment, a baffle 108 is further provided outside the concave mounting groove 13, and the baffle 108 is used to protect the first liquid driving device 3.

[0085] In actual use, the baffle 108 can be disassembled to install, replace, and repair the first liquid driving device 3, which is safe, reliable, and convenient to operate.

[0086] In this embodiment, the holding furnace further includes a feed trough 14, a discharge pipeline 4, and a second liquid driving device 5. The feed trough 14 is arranged on the chamber body of the first chamber 11 and is communicated with the first chamber 11;

[0087] A third hole 103 is provided on the second chamber 12, and the discharge pipeline 4 is communicated with the chamber body of the second chamber 12 through the third hole 103;

[0088] The second liquid driving device 5 is arranged on the discharge pipeline 4, and the second liquid driving device 5 is used to drive the liquid content out of the second chamber 12.

[0089] In this embodiment, the third hole 103 is arranged on the side close to the bottom wall of the furnace chamber 1.

[0090] Add liquid content into the first chamber 11 through the feed trough 14; in actual use, the feed trough 14 can be a feed hole or a feed pipeline.

[0091] Such as Figure 5 、 Figure 8 As shown, in this embodiment, the holding furnace further includes a discharge plug 9, and a fourth hole 104 is further provided on the furnace chamber 1. The fourth hole 104 cooperates with the discharge plug 9 for rapid discharging.

[0092] In this embodiment, the second liquid driving device 5 is a metering electromagnetic pump. The second liquid driving device 5 includes a second liquid flow pipeline 51. The second liquid flow pipeline 51 is arranged on the discharge pipeline 4 and is communicated with the discharge pipeline 4. The metering electromagnetic pump is used to pump the liquid content out of the second chamber 12 quantitatively.

[0093] In this embodiment, a probe 6 is further included. An outlet 41 is formed on the discharge pipeline 4. The probe 6 is disposed on the outlet 41 and is electrically connected to the metering electromagnetic pump. The probe 6 is used to keep the liquid level of the liquid content in the discharge pipeline 4 near the outlet 41.

[0094] The outlet 41 is disposed higher than the first chamber 11 and / or the second chamber 12.

[0095] When the metering electromagnetic pump pumps the liquid content out of the second chamber 12 through the outlet 41, the liquid level in the discharge pipeline 4 will decrease. To keep the metering electromagnetic pump pumping stably, the liquid level needs to be stabilized. The probe 6 is electrically connected to the metering electromagnetic pump. When the probe 6 detects that the liquid level is unstable or decreasing, the metering electromagnetic pump changes or increases the pumping volume to keep the liquid level stable and prevent it from overflowing the outlet 41. At the same time, oxidation inclusions formed in the pipeline during the output of the liquid content can be avoided.

[0096] During actual use, the outlet height of the outlet 41 is higher than the highest liquid level height in the furnace chamber 1 to prevent the liquid content from overflowing when the holding furnace is being charged.

[0097] During actual use, a heating device 8 is also provided on the discharge pipeline 4. The heating device 8 on the discharge pipeline 4 is used to prevent the aluminum liquid from solidifying due to long-term stillness in the pipeline.

[0098] Such as Figure 6 、 Figure 7 As shown, in this embodiment, an installation boss 15 is provided on the inner side of the bottom wall of the furnace chamber 1. Two installation card slots 151 are provided on the installation boss 15 and on the inner side of the furnace wall connected to the installation boss 15. The filter element 2 includes two ceramic foam boards. The ceramic foam boards are clamped in the furnace chamber 1 through the installation card slots 151. A filter channel will be formed between two adjacent ceramic foam boards, and multiple ceramic foam boards can enhance the filtering effect.

[0099] The installation card slots 151 in the part of the installation boss 15 can have a larger groove depth to stably install the filter element 2 in the furnace.

[0100] In this embodiment, a furnace cover 7 and a heating device 8 are further included. The heating device 8 is provided on the furnace cover 7. 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. The heating device 8 is used to heat the liquid content in the first chamber 11 and the second chamber 12.

[0101] The heating device 8 can ensure the normal operation of the holding furnace.

[0102] In this embodiment, the heating device 8 is a heating rod. The heating rod is electrically connected to a thermocouple temperature controller. The thermocouple temperature controller cooperates with the heating rod to keep the liquid content in the first chamber 11 and / or the second chamber 12 at a constant temperature.

[0103] In this embodiment, the heating rods are immersion heating rods. There are eight heating rods, which are evenly divided into two groups. The two groups of heating rods are arranged at intervals on the first furnace cover 71 and the second furnace cover 72 respectively. The thermocouple temperature controller connected to the heating rods can achieve the effect of intermittent heating and heat preservation.

[0104] In this embodiment, the furnace cover 7 at least includes a first furnace cover 71 and a second furnace cover 72. The first furnace cover 71 is used to be buckled with the first chamber 11, and the second furnace cover 72 is used to be buckled with the second chamber 12;

[0105] A liquid level height detector is arranged on the first furnace cover 71. The liquid level height detector is used to detect the liquid level height of the liquid content in the first chamber 11.

[0106] The liquid level height detector can prevent the situation that when the inclusions of the filter element 2 accumulate to a certain extent, the fluidity of the liquid content decreases, the pressure difference between the first chamber 11 and the second chamber 12 increases, and the liquid content overflows from the furnace body.

[0107] In this embodiment, the filter element 2 includes two ceramic foam plates, and the two ceramic foam plates are arranged at intervals in the installation card slot 151.

[0108] In actual use, the filter element 2 can be replaced regularly, and the replacement operation is simple. Just pull out the filter element 2 from the installation card slot 151.

[0109] 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. The third furnace cover 73 is used to be buckled with the feed tank 14, the fourth furnace cover 74 is used to be arranged above the filter element 2, and the fifth furnace cover 75 is arranged above the concave installation groove 13.

[0110] As Figure 3 shown, in this embodiment, the furnace chamber 1 includes a furnace liner 105, a heat preservation layer 106 wrapped outside the furnace liner 105, and a furnace body shell 107. The furnace body shell 107 is arranged outside the heat preservation layer 106.

[0111] A non-fully sealed structure is used between the furnace cover 7 and the furnace chamber 1. The furnace cover 7 is distributed, and each furnace cover 7 can be opened as needed. And each furnace cover 7 is placed separately according to the size of each area of the furnace body, which is convenient for cleaning the area and replacing the filter element 2.

[0112] The heat preservation furnace with liquid circulation filtration provided by the present invention can continuously assist in casting production, or can provide high-quality liquid content to the casting outlet stage by stage.

[0113] The steps of using the heat preservation furnace provided by the present invention include: First, preheat the entire system and heat the temperature of the furnace body of the heat preservation furnace to the set temperature; Inject the molten aluminum into the first chamber 11 of the heat preservation furnace through the feed chute 14. After the molten aluminum enters the second chamber 12 through the filter element 2, start the first liquid driving device 3 to realize the circulation of the molten aluminum from the second chamber 12 to the first chamber 11. The purified molten aluminum is output through the discharge port 41 by the second liquid driving device 5 and can be used for quantitative pouring or low-pressure casting.

[0114] The above are only the preferred embodiments of the present invention, and thus do not limit the patent protection scope of the present invention. Any equivalent structural transformation made by using the content of the specification and drawings of the present invention, directly or indirectly applied in other related technical fields, shall be similarly included in the protection scope of the present invention.

Claims

1. A heat-insulating furnace with liquid recyclable filtration, comprising a furnace chamber for storing liquid contents, characterized in that, The holding furnace further includes a filter element and a first liquid driving device; The filter element is disposed inside the furnace chamber and divides the furnace chamber into a first chamber and a second chamber. The filter element is used to filter the liquid content flowing from the first chamber to the second chamber; The side wall of the furnace chamber is recessed inward to form a concave mounting groove. The concave mounting groove is disposed on the side wall of the first chamber close to the second chamber, or on the side wall of the second chamber close to the first chamber, or at the junction of the first chamber and the second chamber. The concave mounting groove is used to mount the first liquid driving device; The first liquid driving device is disposed outside the furnace chamber. The first liquid driving device includes a first liquid flow pipeline, and the first liquid flow pipeline includes a first port and a second port. The first port is communicated with the first chamber, and the second port is communicated with the second chamber. The first liquid driving device is used to drive the liquid content to flow from the second chamber to the first chamber through the first liquid flow pipeline; When the liquid content flows from the first chamber to the second chamber through the filter element, a liquid level difference is formed between the first chamber and the second chamber, and the liquid level difference further drives the liquid content to flow from the first chamber to the second chamber through the filter element; The first liquid driving device cooperates with the filter element to realize the circulating flow of the liquid content between the first chamber and the second chamber; The holding furnace further includes a feeding trough, a discharging pipeline and a second liquid driving device. The feeding trough is disposed on the chamber body of the first chamber and is communicated with the first chamber; A third hole is provided on the second chamber, and the discharging pipeline is communicated with the chamber body of the second chamber through the third hole; The second liquid driving device is disposed on the discharging pipeline. The second liquid driving device is used to drive the liquid content out of the second chamber; 2. The heat preservation furnace with liquid recyclable filtration according to claim 1, characterized in that, A first hole is provided on the side of the concave mounting groove close to the first chamber, and a second hole is provided on the side of the concave mounting groove close to the second chamber. The first port of the first liquid flow pipeline is disposed on the first hole, and the second port of the first liquid flow pipeline is disposed on the second hole; The first hole and the second hole are disposed on the side close to the bottom wall of the furnace chamber; 3. The heat preservation furnace with liquid recyclable filtration according to claim 1, characterized in that, The first liquid driving device is an electromagnetic pump; The second liquid driving device is a metering electromagnetic pump. The second liquid driving device includes a second liquid flow pipeline, and the second liquid flow pipeline is disposed on the discharging pipeline and is communicated with the discharging pipeline. The metering electromagnetic pump is used to pump out the liquid content from the second chamber quantitatively; 4. The heat preservation furnace with liquid recyclable filtration according to claim 3, characterized in that, A probe is further included. A discharging port is formed on the discharging pipeline, and the probe is disposed on the discharging port. The probe is electrically connected with the metering electromagnetic pump. The probe is used to control the liquid level of the liquid content in the discharging pipeline to be maintained near the discharging port; The discharging port is disposed higher than the first chamber and / or the second chamber.

5. The heat preservation furnace with liquid recyclable filtration according to claim 1, characterized in that, An installation boss is provided on the inner side of the furnace bottom wall, and at least one installation slot is provided on the installation boss and the inner side of the furnace wall connected to the installation boss. The filter element includes at least one ceramic foam board, and the ceramic foam board is clamped in the furnace through the installation slot.

6. The heat preservation furnace with liquid recyclable filtration according to claim 1, characterized in that, It further includes a furnace cover and a heating device. The heating device is provided on the furnace cover. When the furnace cover is buckled with the furnace, the heating device is located in the first chamber and / or the second chamber, and the heating device is used to heat the liquid contents in the first chamber and the second chamber.

7. The heat preservation furnace with liquid recyclable filtration according to claim 6, characterized in that, The heating device is a heating rod, and the heating rod is electrically connected to a thermocouple temperature controller. The thermocouple temperature controller cooperates with the heating rod to keep the liquid contents in the first chamber and / or the second chamber at a constant temperature.

8. The heat-insulating furnace with liquid recyclable filtration according to claim 6, characterized in that The furnace cover at least includes a first furnace cover and a second furnace cover. The first furnace cover is used to be buckled with the first chamber, and the second furnace cover is used to be buckled with the second chamber. A liquid level height detector is provided on the first furnace cover, and the liquid level height detector is used to detect the liquid level height of the liquid contents in the first chamber.

Images