Casting furnace capable of horizontally disassembling and assembling continuous casting mold

Abstract

The utility model discloses a casting furnace capable of horizontally disassembling and assembling a continuous casting die, which comprises a casting cavity, a pressure cavity and a liquid inlet cavity which are arranged in a furnace body, the bottoms of the casting cavity and the liquid inlet cavity are both communicated with the pressure cavity, a liquid level detector is arranged in the casting cavity, the position of the casting cavity is fixedly connected with the casting die, and the liquid level detector is connected with the liquid level detector. A sealing cover plate is fixedly arranged at the top end of the pressure cavity; a gas storage tank is arranged on one side of the furnace body and sequentially connected with a three-way electromagnetic valve, a conveying pump, a water vapor filter and a gas inlet valve through connecting pipes, and the outlet end of the gas inlet valve is connected with the sealing cover plate through a gas inlet pipe. The first exhaust pipe on the sealing cover plate is sequentially connected with an inert gas purification box and a recycling box, and the recycling box is connected with the three-way electromagnetic valve through a connecting pipe. The feeding device has the advantages that inert gas is prevented from leaking from the feeding port, and high efficiency and safety during horizontal disassembly and assembly of the casting mold are guaranteed; and the inert gas can be recovered and recycled, so that serious waste caused by one-time use of the inert gas is avoided, and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of casting furnaces, in particular to a casting furnace capable of horizontally disassembling and assembling a continuous casting mold. Background Technique

[0002] Copper tubes are widely used in various aspects of life. At present, the main methods for preparing copper tubes are horizontal continuous casting method and extrusion method. Among them, the horizontal continuous casting method has the characteristics of small equipment investment, high production efficiency, and low production cost, and is widely used in the process of preparing copper tubes. Especially in the process of preparing air-conditioning tubes for refrigeration and heat exchange, most of them adopt the horizontal continuous casting method. During the horizontal continuous casting process, when the quality of the cast billet cannot meet the requirements of subsequent processing, the mold needs to be replaced. The current method of replacing the mold is the inclined mold replacement method, that is, after the casting is completed, the holding furnace is tilted by a certain angle by a hydraulic mechanism to ensure that the molten metal in the furnace will not overflow after the mold is removed. The patent publication number CN114273641B discloses a vertical continuous casting system and process for composite wires, specifically discloses that there are a melting cavity and a composite cavity communicated with each other in the furnace body. When replacing the casting mold on the composite cavity, the liquid level inside the composite cavity is lowered by changing the pressure in the melting cavity to achieve horizontal disassembly and assembly of the casting mold. However, since the pressure regulating device and the feed inlet are both arranged on the melting cavity, there is leakage of inert gas, and the stability of the pressure inside the furnace body cannot be guaranteed, and the high efficiency and safety during the horizontal disassembly and assembly of the casting mold cannot be guaranteed; serious waste is caused by the one-time use of inert gas and other problems. Content of the Utility Model

[0003] The technical problem to be solved by the utility model is to overcome the existing defects and provide a casting furnace capable of horizontally disassembling and assembling a continuous casting mold, which avoids the frequent tilting of the holding furnace, is beneficial to maintaining the accuracy of the equipment, effectively prevents the leakage of inert gas from the feed inlet, not only avoids wasting too much inert gas, but also ensures the stability of the pressure in the pressure chamber and the furnace body, and ensures the high efficiency and safety during the horizontal disassembly and assembly of the casting mold; the inert gas can be recovered and recycled, avoiding serious waste caused by the one-time use of inert gas, and can effectively solve the problems in the background technique.

[0004] To achieve the above object, the utility model provides the following technical solutions: A casting furnace capable of horizontally disassembling and assembling a continuous casting mold, including a casting cavity, a pressure cavity and a liquid inlet cavity provided in the furnace body. The bottoms of the casting cavity and the liquid inlet cavity are both communicated with the pressure cavity. A liquid level detector is provided in the casting cavity. A casting mold is detachably and fixedly connected to the position on the side wall of the furnace body corresponding to the casting cavity. A sealing cover plate is fixedly provided at the top of the pressure cavity on the furnace body. A pressure gauge for measuring the internal pressure of the pressure cavity is provided on the sealing cover plate. An air storage tank is provided on one side of the furnace body. The air storage tank is sequentially connected with a three-way solenoid valve, a delivery pump, a water vapor filter and an intake valve through a connecting pipe. The outlet end of the intake valve is connected to the sealing cover plate through an intake pipe. An exhaust pipe 1 is connected to the sealing cover plate, and an exhaust valve is connected to the exhaust pipe 1. The outlet end of the exhaust valve is sequentially connected with an inert gas purification box and a recovery box through a connecting pipe. The recovery box is connected to the three-way solenoid valve through a connecting pipe.

[0005] Further, the pressure cavity is located between the casting cavity and the liquid inlet cavity. The ratio of the area of the pressure cavity to the cross-sectional areas of the casting cavity and the liquid inlet cavity is: S pressure cavity / (S casting cavity + S liquid inlet cavity) = 1.5 to 3.

[0006] Further, two partition plates are vertically provided in the inert gas purification box. The inert gas purification box is sequentially partitioned into a first purification cavity, a second purification cavity and a third purification cavity from left to right by the partition plates. An air supply pipe is provided on the first purification cavity, and the end of the air supply pipe penetrates into the first purification cavity and is close to its bottom. A communication pipe is provided between the first purification cavity and the second purification cavity, and the end of the communication pipe penetrates through the second purification cavity and is close to its bottom. Water and reaction liquid are respectively accommodated in the first purification cavity and the second purification cavity. A molecular sieve filter is provided at the upper end inside the third purification cavity, and a communication hole is opened at the top of the partition plate between the second purification cavity and the third purification cavity.

[0007] Further, a gas purity detection device is provided at the outlet of the third purification cavity. An exhaust pipe 2 is connected to the third purification cavity, and an electromagnetic valve is provided on the exhaust pipe 2. An inert gas sensor for detecting the content of inert gas is provided in the recovery box.

[0008] Compared with the prior art, the beneficial effects of the present utility model are as follows: For the casting furnace capable of horizontally disassembling and assembling the continuous casting mold, the horizontal disassembly and replacement of the casting mold are realized by adjusting the pressure in the pressure chamber, avoiding the frequent tilting of the holding furnace, which is beneficial to maintaining the accuracy of the equipment; the pressure regulating equipment is arranged on the sealing cover plate of the pressure chamber, effectively preventing the leakage of inert gas from the feed port, not only avoiding the waste of excessive inert gas, but also ensuring the stability of the pressure inside the pressure chamber and the furnace body. The trace water vapor contained in the inert gas is filtered by the water vapor filter, ensuring high efficiency and safety during the horizontal disassembly and assembly of the casting mold; the mixed gas discharged from the pressure chamber is purified and filtered by the inert gas purification box, and the inert gas can be recovered and recycled, avoiding serious waste caused by the one-time use of inert gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 is a schematic structural diagram of the present utility model;

[0010] Figure 2 is a schematic structural diagram of the interior of the furnace body of the present utility model;

[0011] Figure 3 is a schematic structural diagram of the interior of the inert gas purification box of the present utility model.

[0012] In the figure: 1. Furnace body; 101. Casting cavity; 102. Pressure chamber; 103. Liquid inlet chamber; 2. Casting mold; 3. Sealing cover plate; 4. Pressure gauge; 5. Gas storage tank; 6. Delivery pump; 7. Inert gas purification box; 701. First purification chamber; 702. Second purification chamber; 703. Third purification chamber; 71. Partition plate; 711. Communication hole; 72. Air supply pipe; 73. Communication pipe; 74. Molecular sieve filter; 75. Gas purity detection device; 76. Exhaust pipe II; 8. Recovery box; 81. Inert gas sensor; 9. Liquid level detector; 10. Water vapor filter; 11. Intake valve; 12. Exhaust valve; 13. Three-way solenoid valve. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0013] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model. Embodiment

[0014] Please refer to Figures 1-3, the present utility model provides a technical solution: a casting furnace for horizontally disassembling and assembling a continuous casting mold, including a casting cavity 101, a pressure cavity 102, and a liquid inlet cavity 103 provided inside the furnace body 1. The pressure cavity 102 is located between the casting cavity 101 and the liquid inlet cavity 103. The bottoms of the casting cavity 101 and the liquid inlet cavity 103 are both connected to the pressure cavity 102. A liquid level detector 9 is provided inside the casting cavity 101. A casting mold 2 is detachably and fixedly connected to the side wall of the furnace body 1 at a position corresponding to the casting cavity 101. A sealing cover plate 3 is fixedly provided at the top of the pressure cavity 102 on the furnace body 1. A pressure gauge 4 for measuring the internal pressure of the pressure cavity 102 is provided on the sealing cover plate 3. An air storage tank 5 is provided on one side of the furnace body 1. The air storage tank 5 is sequentially connected to a three-way solenoid valve 13, a delivery pump 6, a water vapor filter 10, and an intake valve 11 through a connecting pipe. The outlet end of the intake valve 11 is connected to the sealing cover plate 3 through an intake pipe. An exhaust pipe 1 is connected to the sealing cover plate 3, and an exhaust valve 12 is connected to the exhaust pipe 1. The outlet end of the exhaust valve 12 is sequentially connected to an inert gas purification box 7 and a recovery box 8 through a connecting pipe. The recovery box 8 is connected to the three-way solenoid valve 13 through a connecting pipe;

[0015] Two partition plates 71 are vertically provided inside the inert gas purification box 7. The inert gas purification box 7 is sequentially partitioned into a first purification cavity 701, a second purification cavity 702, and a third purification cavity 703 from left to right by the partition plates 71. An air supply pipe 72 is provided on the first purification cavity 701, and the end of the air supply pipe 72 penetrates into the first purification cavity 701 and is close to its bottom. A communicating pipe 73 is provided between the first purification cavity 701 and the second purification cavity 702, and the end of the communicating pipe 73 penetrates through the second purification cavity 702 and is close to its bottom. Water and a reaction liquid are respectively accommodated in the first purification cavity 701 and the second purification cavity 702. The ends of the air supply pipe 72 and the communicating pipe 73 are respectively immersed in water and the reaction liquid. A molecular sieve filter 74 is provided at the upper end inside the third purification cavity 703. A gas purity detection device 75 is provided at the outlet of the third purification cavity 703. An exhaust pipe 2 76 is connected to the third purification cavity 703, and a solenoid valve is provided on the exhaust pipe 2 76. A communicating hole 711 is provided at the top of the partition plate 71 between the second purification cavity 702 and the third purification cavity 703. An inert gas sensor 81 for detecting the content of inert gas is provided inside the recovery box 8.

[0016] Further, the ratio of the area of the pressure cavity 102 to the cross-sectional areas of the casting cavity 101 and the liquid inlet cavity 103 is: S pressure cavity / (S casting cavity + S liquid inlet cavity) = 1.5 - 3, which is beneficial to adjusting the accuracy and efficiency of the metal liquid level in the casting cavity 101 and ensuring the safety and stability of the internal structure of the furnace body 1.

[0017] Working principle:

[0018] The furnace body 1 is charged through the liquid inlet chamber 103. Since the pressure chamber 102 is interconnected with the bottom of the casting chamber 101 and the liquid inlet chamber 103, the molten metal flows through the pressure chamber 102 and then enters the casting chamber 101, and the molten metal is processed by the casting mold 2; when the casting mold 2 needs to be replaced, the intake valve 11 is opened and the exhaust valve 12 is closed. The inert gas in the gas storage tank 5 is pumped into the pressure chamber 102 through the delivery pump 6, and a certain pressure is maintained in the pressure chamber 102. The pressure gauge 4 detects the pressure in the pressure chamber 102. After the pressure in the pressure chamber 102 increases, the liquid level inside it drops, and the liquid levels in the casting chamber 101 and the feed chamber 103 rise. After the intake valve 11 is closed, the casting process continues. The liquid level detector 9 detects the liquid level height in the casting chamber 101. When the liquid level in the casting chamber 101 drops to the casting mold 2, the casting process stops. The exhaust valve 12 is opened to discharge the mixed gas in the pressure chamber 102, causing the liquid level in the pressure chamber 102 to rise, and the liquid levels in the casting chamber 101 and the feed chamber 103 to drop, so that the liquid level in the casting chamber 101 drops below the casting mold 2, and then the casting mold 2 is horizontally disassembled, assembled and replaced;

[0019] Before the inert gas enters the intake valve 11, the trace water vapor contained in the inert gas is filtered by the water vapor filter 10 to prevent safety accidents when the inert gas is introduced;

[0020] The mixed gas discharged from the pressure chamber 102 through the exhaust valve 12 enters the water in the first purification chamber 701 through the air delivery pipe 72. The water can filter out the impurities and toxic gases in the mixed gas. The mixed gas preliminarily purified by the first purification chamber 701 is introduced into the reaction liquid in the second purification chamber 702 through the connecting pipe 73. The organic gas in the mixed gas is removed by the reaction liquid. The gas obtained after secondary purification by the second purification chamber 702 is mainly inert gas containing water vapor. The inert gas in the second purification chamber 702 enters the third purification chamber 703 through the connecting hole 711, and the water vapor contained in the inert gas is absorbed by the molecular sieve filter 74. The inert gas in the third purification chamber 703 is recycled to the recycling box 8 and recycled through the control of the three-way solenoid valve 13; the purity of the inert gas filtered by the third purification chamber 703 is detected by the gas purity detection device 75. When the purity of the inert gas filtered by the third purification chamber 703 is low, the exhaust pipe two 76 is opened to discharge the mixed gas with low inert gas purity into the air or for centralized recovery and treatment; the content of the inert gas in the recycling box 8 is detected by the inert gas sensor 81.

[0021] The casting furnace of the horizontally detachable and replaceable continuous casting mold disclosed in this embodiment realizes the horizontal disassembly and replacement of the casting mold 2 by adjusting the pressure in the pressure chamber 102, avoiding the frequent tilting of the holding furnace and being beneficial to maintaining the accuracy of the equipment; the pressure regulating devices are all arranged on the sealing cover plate 3 of the pressure chamber 102, effectively preventing the leakage of inert gas from the feed port, not only avoiding the waste of too much inert gas, but also ensuring the stability of the internal pressure of the pressure chamber 102. The trace water vapor contained in the inert gas is filtered by the water vapor filter 10 to ensure the safety during the horizontal disassembly and replacement of the casting mold 2; the mixed gas discharged from the pressure chamber 102 is purified and filtered by the inert gas purification box 7, and the inert gas can be recovered and recycled, avoiding serious waste caused by the one-time use of the inert gas.

[0022] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A casting furnace for horizontally disassembling and assembling a continuous casting mold, comprising a casting cavity, a pressure cavity and a liquid inlet cavity provided in the furnace body, characterized in that: The bottoms of the casting cavity and the liquid inlet cavity are both connected to the pressure cavity. A liquid level detector is provided in the casting cavity. A casting mold is detachably and fixedly connected to the position on the side wall of the furnace body corresponding to the casting cavity. A sealing cover plate is fixedly provided at the top of the pressure cavity on the furnace body; a pressure gauge for measuring the internal pressure of the pressure cavity is provided on the sealing cover plate. An air storage tank is provided on one side of the furnace body. The air storage tank is sequentially connected with a three-way solenoid valve, a delivery pump, a water vapor filter and an intake valve through a connecting pipe. The outlet end of the intake valve is connected to the sealing cover plate through an intake pipe; an exhaust pipe 1 is connected to the sealing cover plate, and an exhaust valve is connected to the exhaust pipe 1. The outlet end of the exhaust valve is sequentially connected with an inert gas purification box and a recovery box through a connecting pipe. The recovery box is connected to the three-way solenoid valve through a connecting pipe.

2. The casting furnace of a horizontally disassemblable continuous casting mold according to claim 1, characterized in that: The pressure cavity is located between the casting cavity and the liquid inlet cavity. The ratio of the area of the pressure cavity to the cross-sectional areas of the casting cavity and the liquid inlet cavity is: S pressure cavity / (S casting cavity + S liquid inlet cavity) = 1.5 - 3.

3. The casting furnace of a horizontally disassemblable continuous casting mold according to claim 1, characterized in that: Two partition plates are vertically provided in the inert gas purification box. The inert gas purification box is sequentially partitioned into a first purification cavity, a second purification cavity and a third purification cavity from left to right by the partition plates. An air supply pipe is provided on the first purification cavity, and the end of the air supply pipe penetrates into the first purification cavity and is close to its bottom; A communicating pipe is provided between the first purification cavity and the second purification cavity, and the end of the communicating pipe penetrates through the second purification cavity and is close to its bottom. Water and reaction liquid are respectively accommodated in the first purification cavity and the second purification cavity; A molecular sieve filter is provided at the upper end inside the third purification cavity, and a communication hole is opened at the top of the partition plate between the second purification cavity and the third purification cavity.

4. A casting furnace for a horizontally disassemblable continuous casting mold according to claim 3, characterized in that: A gas purity detection device is provided at the outlet of the third purification cavity; An exhaust pipe 2 is connected to the third purification cavity, and a solenoid valve is provided on the exhaust pipe 2; An inert gas sensor for detecting the content of inert gas is provided in the recovery box.

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