Ladle ejector for aluminum electrolysis

Abstract

The utility model provides a two-man ladle ejector for aluminum electrolysis, and relates to the technical field of electrolytic aluminum production. Comprising a first-stage gas guide pipe, a spherical tee joint and a gas receiving and mixing chamber, the first-stage gas guide pipe and the gas receiving and mixing chamber are installed at the two opposite ends of the spherical tee joint respectively, part of the first-stage gas guide pipe is arranged in the spherical tee joint in a penetrating mode, and the gas outlet end of the first-stage gas guide pipe is arranged in the gas receiving and mixing chamber. A gas drainage piece is arranged on one side, opposite to the first-stage gas guide pipe, of the gas receiving and mixing chamber, and a quick release assembly detachably connected with the spherical tee joint is arranged on the first-stage gas guide pipe; the problems of long time consumption of high-temperature operation of operators and difficulty in assembly, disassembly and cleaning caused by thermal expansion of threaded connection and dust coverage are effectively avoided; the ejector nozzle has the effects of quick replacement, airflow resistance reduction and compression, and solves the problems of high replacement cost and large airflow passing resistance of the ejector nozzle.

Description

Technical Field

[0001] The utility model relates to the technical field of electrolytic aluminum production, in particular to a ladle ejector for aluminum electrolysis. Background Art

[0002] The vacuum ladle is a kind of turnover equipment commonly used in the metallurgical industry. It is a large sealed container made of a steel shell and lined with refractory materials. It uses an ejector to suck the molten aluminum in the electrolytic cell into the vacuum ladle. The vacuum in the ladle is generally created by the ejection vacuum method. The key device is the ejector on the top of the ladle. When compressed air passes through it, it takes away the air in the ladle body, forming a negative pressure in the ladle, thereby sucking the molten aluminum into the ladle through the aluminum suction port.

[0003] During the production operation of vacuum ladle aluminum extraction, the liquid aluminum or electrolytic particles splashing in the ladle will often clog the air inlet pipe of the ejector, and the air inlet pipe of the ejector needs to be disassembled from time to time and cleaned regularly. However, the air inlet pipe of the ejector of the existing vacuum ladle and the ejector of the ladle cover are an integrated structure, which is not easy to disassemble and difficult to clean after being clogged.

[0004] In addition, the existing molten aluminum lifting ladle uses the negative pressure formed in the ladle to suck the molten aluminum from the electrolytic cell into the ladle from the aluminum outlet for aluminum tapping. The effective negative pressure required for aluminum tapping is 0.0467MPa-0.0533Mpa. After the ejector is connected to the compressed air pipeline network, the total pressure of the compressed air pipeline network is relatively large. The change in pressure causes the vacuum degree to change, causing the ejector to fail to work normally at low pressure, low efficiency, and high gas consumption. These problems suddenly occur, resulting in instability in liquid absorption and affecting the speed of aluminum absorption. Utility Model Content

[0005] The purpose of the utility model is to provide a ladle ejector for aluminum electrolysis, which can solve the problems raised by the above-mentioned background technology in view of the shortcomings of the existing technology.

[0006] The technical solution of the present utility model is achieved in this way:

[0007] The utility model provides a ladle ejector for aluminum electrolysis, comprising a primary gas conduit, a spherical tee and a gas receiving mixing chamber, wherein the primary gas conduit and the gas receiving mixing chamber are respectively installed at opposite ends of the spherical tee, a part of the primary gas conduit is passed through the spherical tee and the gas outlet end of the primary gas conduit is placed in the gas receiving mixing chamber, a gas drainage piece is provided on the side of the gas receiving mixing chamber opposite to the primary gas conduit, and a quick-release assembly is provided on the primary gas conduit that is detachably connected to the spherical tee.

[0008] In some technical solutions of the present invention, the quick-release assembly includes a first mounting sleeve arranged on the primary gas conduit, mounting openings are provided on both sides of the first mounting sleeve, a locking rod is rotatably provided in the mounting opening, a second mounting sleeve is provided on one of the through holes of the spherical tee, the second mounting sleeve is embedded in the first mounting sleeve, and two locking openings respectively adapted for the locking rods are provided on the outer wall of the second mounting sleeve, and a protrusion embedded in the locking opening is provided on the end of the locking rod.

[0009] In some technical solutions of the present invention, one end of the primary gas conduit placed in the spherical tee is detachably provided with a secondary gas conduit, and a portion of the secondary gas conduit is placed in the gas receiving mixing chamber.

[0010] In some technical solutions of the present invention, an annular groove with a rectangular cross section is provided on the outer circumferential wall of the secondary gas conduit.

[0011] In some technical solutions of the present invention, an inner step is provided in the first installation sleeve, and a sealing ring abutting against the second installation sleeve is provided on the inner step.

[0012] In some technical solutions of the present invention, the gas guide member is a gas receiving nozzle provided at the front end of the gas receiving mixing chamber, and the inner cross-section of the gas receiving nozzle is a frustum.

[0013] In some technical solutions of the present invention, the outer cross-section of the gas receiving nozzle is in the shape of a frustum.

[0014] Compared with the prior art, the embodiments of the present invention have at least the following advantages or beneficial effects:

[0015] By setting up a stainless steel snap-on quick connector to connect the gas primary conduit and the spherical tee, the problem of workers spending a long time working in high temperatures and the difficulty in disassembling and cleaning components due to thermal expansion and dust coverage of the threaded connection is effectively avoided.

[0016] The primary gas duct and the secondary gas duct are connected by threads, and a countersunk hole is opened on the inside of the threaded inlet. The secondary gas duct is an independent single component and has a square groove on the outside, which has the effect of quick replacement, airflow resistance reduction and compression, solving the problems of high replacement cost of the ejector nozzle and large airflow resistance.

[0017] The gas inlet at the front end of the gas receiving mixing chamber is designed to be a trumpet-shaped with sharp angles and thin edges, which has the effect of reducing resistance when the high-speed airflow passes through, and further enhances the speed of the ejector to extract the secondary flow low-pressure gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 This is a schematic diagram of the sectional exploded structure of the present utility model;

[0020] Figure 2 It is a schematic diagram of the cross-sectional combined structure of the present utility model.

[0021] Icons: 1. Primary gas conduit; 2. Secondary gas conduit; 3. First mounting sleeve; 4. Second mounting sleeve; 5. Spherical tee; 6. Gas receiving mixing chamber; 7. Annular groove; 8. Gas receiving nozzle; 9. Locking rod; 10. Protrusion; 11. Sealing ring; 12. Locking port. DETAILED DESCRIPTION

[0022] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0023] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.

[0024] Example 1

[0025] Please refer to Figure 1-Figure 2 shown.

[0026] The utility model provides a ladle ejector for aluminum electrolysis, such as Figure 1 、 Figure 2As shown, it includes a gas primary conduit 1, a spherical tee 5 and a gas receiving mixing chamber 6. The gas primary conduit 1 and the gas receiving mixing chamber 6 are respectively installed at opposite ends of the spherical tee 5. A part of the gas primary conduit 1 is passed through the spherical tee 5 and the gas outlet end of the gas primary conduit 1 is placed in the gas receiving mixing chamber 6. A gas drainage piece is provided on the side of the gas receiving mixing chamber 6 opposite to the gas primary conduit 1. A quick-release assembly detachably connected to the spherical tee 5 is provided on the gas primary conduit 1. The utility model realizes the detachable connection between the gas primary conduit 1 and the spherical tee 5 through the quick-release assembly, improves the cleaning efficiency of the ejector, facilitates the adjustment of the nozzle, simplifies the disassembly and assembly process, shortens the installation time, and eliminates the need for operators to cover the top for a long time when performing the above operations, thereby reducing the safety risks during the above operations; a gas drainage piece is provided on the side of the gas receiving mixing chamber 6 opposite to the gas primary conduit 1 to avoid excessive resistance inside the ejector receiving chamber, which affects the airflow rate and directly affects the efficiency of aluminum production.

[0027] Preferably, the gas primary conduit 1 is a hollow tube structure, with an external thread provided on the outer wall of one end of the primary conduit and an internal thread provided on the inner wall of the other end. An external thread is also provided in the middle section of the primary conduit, and a knurled locking plate is provided in the middle.

[0028] An outer wall of one end of the secondary gas conduit 2 is provided with an external thread that matches the internal thread in the primary gas conduit 1 , and a release hole that communicates with the primary gas conduit 1 is provided at the other end of the secondary gas conduit 2 .

[0029] Both ends of the gas receiving mixing chamber 6 are provided with external threads, and the gas receiving mixing chamber 6 is threadedly connected to the spherical tee 5 .

[0030] In some technical solutions of the present invention, the quick-release assembly includes a first mounting sleeve 3 arranged on the primary gas conduit 1, and the external thread in the middle section of the primary gas conduit 1 is threadedly connected to the first mounting sleeve 3. Mounting openings are provided on both sides of the first mounting sleeve 3, and a locking rod 9 is provided in the mounting opening through a pin shaft. A second mounting sleeve 4 is provided on one of the through holes of the spherical tee 5 by a threaded connection. The second mounting sleeve 4 is embedded in the first mounting sleeve 3, and two locking openings 12 are provided on the outer wall of the second mounting sleeve 4, which are respectively adapted to the locking rod 9. A protrusion 10 embedded in the locking opening 12 is provided on the end of the locking rod 9, and the protrusion 10 is a cam; when the second mounting sleeve 4 is embedded in the first mounting sleeve 3, the locking rod 9 set in the locking opening 12 is pressed and rotated. At this time, the protrusion 10 is gradually embedded in the locking opening 12 under the drive of the locking rod 9, thereby fixing the second mounting sleeve 4 in the first mounting sleeve 3 by a compression-limited locking method.

[0031] In some technical solutions of the present invention, an inner step is provided in the first mounting sleeve 3, and a sealing ring 11 is provided on the inner step to abut against the second mounting sleeve 4. The sealing ring 11 is provided in the inner step to prevent gas leakage after the second mounting sleeve 4 and the first mounting sleeve 3 are assembled and connected.

[0032] In some technical solutions of the present invention, a primary gas conduit 1, positioned within a spherical tee 5, is detachably provided with a secondary gas conduit 2 at one end thereof. A portion of the secondary gas conduit 2 is positioned within a gas receiving and mixing chamber 6. By providing a threaded connection between the primary and secondary gas conduits 1 and 2 and providing a countersunk hole within the threaded inlet, the secondary gas conduit 2 can be a single, independent component, facilitating subsequent replacement.

[0033] In some technical solutions of the present invention, an annular groove 7 with a rectangular cross-section is formed on the outer circumferential wall of the secondary gas conduit 2. The annular groove 7 is a square groove. The square groove formed on the outer circumferential wall of the secondary gas conduit 2 enables quick replacement and also serves as a bayonet for an open-end wrench, reducing and compressing the airflow. This solves the problems of high ejector nozzle replacement costs and high airflow resistance.

[0034] In some technical solutions of the present invention, the gas guide member is a gas receiving nozzle 8 provided at the front end of the gas receiving mixing chamber 6, and the inner cross section of the gas receiving nozzle 8 is a frustum.

[0035] In some technical solutions of the present invention, the outer cross-section of the gas receiving nozzle 8 is in the shape of a frustum.

[0036] The thin-edge design of the inner and outer cross-sections of the gas receiving nozzle 8 is trumpet-shaped, which is beneficial for reducing the resistance when high-speed airflow passes through, and further enhancing the speed of the ejector to extract the secondary flow low-pressure gas.

[0037] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A ladle ejector for aluminum electrolysis, characterized in that: It includes a primary gas conduit, a spherical tee and a gas receiving mixing chamber. The primary gas conduit and the gas receiving mixing chamber are respectively installed at the opposite ends of the spherical tee. A part of the primary gas conduit is inserted into the spherical tee and the gas outlet end of the primary gas conduit is placed in the gas receiving mixing chamber. A gas drainage piece is provided on the side of the gas receiving mixing chamber opposite to the primary gas conduit. The primary gas conduit is provided with a quick-release assembly that is detachably connected to the spherical tee.

2. The ladle ejector for aluminum electrolysis according to claim 1, characterized in that: The quick-release assembly includes a first mounting sleeve arranged on the first-level gas conduit, and mounting openings are provided on both sides of the first mounting sleeve. A locking rod is rotatably provided in the mounting opening. A second mounting sleeve is provided on one of the through holes of the spherical tee, and the second mounting sleeve is embedded in the first mounting sleeve. Two locking openings respectively adapted for the locking rods are provided on the outer wall of the second mounting sleeve, and a protrusion embedded in the locking opening is provided on the end of the locking rod.

3. The ladle ejector for aluminum electrolysis according to claim 1, characterized in that: One end of the primary gas conduit placed in the spherical tee is detachably provided with a secondary gas conduit, and a portion of the secondary gas conduit is placed in the gas receiving and mixing chamber.

4. The ladle ejector for aluminum electrolysis according to claim 3, characterized in that: An annular groove with a rectangular cross section is provided on the outer circumferential wall of the secondary gas conduit.

5. The ladle ejector for aluminum electrolysis according to claim 2, characterized in that: An inner step is provided in the first installation sleeve, and a sealing ring is provided on the inner step to abut against the second installation sleeve.

6. The ladle ejector for aluminum electrolysis according to claim 1, characterized in that: The gas guide member is a gas receiving nozzle provided at the front end of the gas receiving mixing chamber, and the inner cross section of the gas receiving nozzle is in the shape of a frustum.

7. The ladle ejector for aluminum electrolysis according to claim 6, characterized in that: The outer cross section of the gas receiving nozzle is in the shape of a frustum.

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