Vacuum ladle ejector exhaust pipe capable of being rotationally disassembled at multiple angles

Abstract

The utility model provides a vacuum ladle ejector exhaust pipe capable of being disassembled in a multi-angle rotating mode, relates to the technical field of ejectors, and solves the technical problems that environment pollution is caused and health of operators is harmed due to the fact that gas is exhausted from an exhaust port of an existing ejector. The device comprises a first transverse pipe, a vertical pipe and a second transverse pipe which are sequentially communicated, the vertical pipe is rotationally connected with the first transverse pipe and the second transverse pipe through a rotating elbow mechanism, and the second transverse pipe is further rotationally provided with a nozzle used for spraying airflow to a recovery device. According to the utility model, gas exhausted by the ejector is recovered through the exhaust pipe, so that dust, HF, CO and other substances are further utilized or uniformly collected into waste residues, and the pollution of a factory area is reduced; according to the utility model, through the running fit of the two groups of rotating elbow mechanisms, the multi-angle rotation and the adjustment of the height and the feeding direction can be realized; the device is simple to install, easy to adjust and operate, and suitable for application scenes of various vacuum ladles.

Description

Technical Field

[0001] The utility model relates to the technical field of ejectors, and more particularly to a multi-angle rotatable and detachable exhaust pipe of a vacuum ladle ejector. Background Technique

[0002] An ejector is a main device on an electrolytic aluminum production line, which is used to evacuate the air in the vacuum ladle body, so as to form a negative pressure in the vacuum ladle and realize the siphon function of the molten aluminum or electrolyte liquid in the electrolytic cell. The quality of its working performance directly affects the production efficiency of electrolytic aluminum.

[0003] The vacuum ladle ejector is a special fluid working machine. The principle of the vacuum ladle sucking molten aluminum mainly uses the Venturi effect. After the compressed air passes through the ejector, a vacuum is formed in the ladle body (siphon principle), and the molten aluminum can smoothly enter the ladle body by the external atmospheric pressure to complete the aluminum sucking operation. During the process, the compressed air flows out of the nozzle at a very high speed into the receiving chamber to form a jet flow, and the gas to be pumped (the ejector fluid, also called the secondary gas) is sucked into the receiving chamber. The compressed air and the ejector fluid are mixed in the mixing chamber for momentum exchange, and the velocity field is gradually evenly distributed during the flow process. Then the mixed fluid enters the diffuser chamber, and the pressure increases due to the decrease in flow velocity. At the outlet of the diffuser chamber, the pressure of the mixed fluid is higher than the pressure of the ejector fluid entering the receiving chamber. The mixed fluid is discharged into the atmosphere after noise reduction and purification in the silencer chamber.

[0004] There are 20 vacuum ladles in a certain electrolysis series, and a special ejector is installed on each ladle. The ejector is directly installed above the large cover of the ladle body. The exhaust port directly faces the air. During the aluminum pumping process, since the ejector directly faces the air, a large amount of dust, HF, CO and other substances in the mixed gas brought out from the ladle body are directly discharged into the on-site air, causing environmental pollution, endangering the physical and mental health of operators, and also resulting in non-compliance of the enterprise's environmental protection. Content of the Utility Model

[0005] The purpose of the utility model is to provide a multi-angle rotatable and detachable exhaust pipe of a vacuum ladle ejector to solve the technical problem that the gas discharged from the exhaust port of the existing ejector causes environmental pollution and endangers the health of operators.

[0006] The embodiments of the utility model are realized by the following technical solutions:

[0007] A multi-angle rotatable and detachable exhaust pipe of a vacuum ladle ejector includes a first horizontal pipe, a vertical pipe and a second horizontal pipe that are connected in sequence. The vertical pipe is rotatably connected to the first horizontal pipe and the second horizontal pipe through a rotating elbow mechanism. The second horizontal pipe is also rotatably provided with a nozzle for jetting air flow to a recovery device.

[0008] Preferably, the rotating elbow mechanism includes a first connector and a second connector that are respectively connected to the pipe fittings at both ends, an elbow connected to the second connector, and a rotating sleeve that rotatably connects the elbow and the first connector.

[0009] Preferably, the first connector is a connecting flange, and the connecting flange is further provided with a pressing flange. An L-shaped sectional gap for fixing and limiting the rotating sleeve is provided between the connecting flange and the pressing flange.

[0010] Preferably, the second connector is a step-down socket.

[0011] Preferably, it further includes a flange for connecting the exhaust port of the ejector, and the first horizontal pipe is connected to the flange.

[0012] Preferably, the nozzle is perpendicular to the radial plane of the second horizontal pipe and faces upward.

[0013] Preferably, the second horizontal pipe is communicated with the recovery device and is higher than the liquid suction plane of the liquid suction pipe.

[0014] By adopting this technical solution, the gas discharged from the ejector is recovered into the gas collection hood of the electrolytic cell through the exhaust pipe, so that substances such as dust, HF, and CO enter the electrolytic cell for further utilization or are uniformly collected into the waste residue, reducing the pollution in the plant area;

[0015] Moreover, through the rotational cooperation of two groups of rotating elbow mechanisms, the exhaust pipe can achieve multi-angle rotation, height and inlet direction adjustment. According to the specific positions of the vacuum ladle and the electrolytic cell, the angle and height of the exhaust pipe entering the gas collection hood of the electrolytic cell are adjusted to prevent directly spraying the discharged gas onto the filtrate liquid surface and affecting the operation of the liquid suction pipe;

[0016] This exhaust pipe is simply installed and easy to adjust, and is suitable for various application scenarios of vacuum ladles.

[0017] The technical solution of the embodiment of the present utility model has at least the following advantages and beneficial effects:

[0018] 1. The present utility model recovers the gas discharged from the ejector through the exhaust pipe, enabling substances such as dust, HF, and CO to be further utilized or uniformly collected into the waste residue, reducing the pollution in the plant area;

[0019] 2. The present utility model can achieve multi-angle rotation, height and inlet direction adjustment through the rotational cooperation of two groups of rotating elbow mechanisms;

[0020] 3. The present utility model is simply installed and easy to adjust, and is suitable for various application scenarios of vacuum ladles. Description of the Drawings

[0021] To more clearly illustrate the technical solutions of the embodiments of the present utility model, the accompanying drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following accompanying drawings only show certain embodiments of the present utility model and should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other relevant accompanying drawings can also be obtained based on these drawings.

[0022] Figure 1 Schematic diagram of the structure of the multi-angle rotatable and detachable exhaust pipe of the vacuum ladle ejector and the ejector provided in Embodiment 1 of the present utility model;

[0023] Figure 2 Schematic diagram of the structure of the multi-angle rotatable and detachable exhaust pipe of the vacuum ladle ejector provided in Embodiment 1 of the present utility model;

[0024] Figure 3 Schematic diagram of the structure of the rotating elbow mechanism of the multi-angle rotatable and detachable exhaust pipe of the vacuum ladle ejector provided in Embodiment 2 of the present utility model;

[0025] Icons: 1, ejector; 2, liquid suction pipe; 31, flange; 32, first horizontal pipe; 33, vertical pipe; 34, second horizontal pipe; 35, nozzle; 4, rotating elbow mechanism; 41, first connecting piece; 411, gap; 42, compression flange; 43, rotating sleeve; 44, second connecting piece; 45, elbow. Detailed implementation manners

[0026] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. Usually, the components of the embodiments of the present utility model described and shown in the accompanying drawings here can be arranged and designed in various different configurations.

[0027] Therefore, the following detailed description of the embodiments of the present utility model provided in the accompanying drawings is not intended to limit the scope of the claimed present utility model, but merely represents the selected embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts fall within the scope of protection of the present utility model.

[0028] It should be noted that: Similar reference numerals and letters denote similar items in the following accompanying drawings. Therefore, once an item is defined in one accompanying drawing, it does not need to be further defined and explained in subsequent accompanying drawings.

[0029] In the description of the present utility model, it should be noted that if terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are used to indicate the orientation or positional relationship, it is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of this application is customarily placed during use. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation to the present utility model.

[0030] In the description of the present utility model, it should also be noted that unless otherwise clearly specified and defined, if terms such as "set", "installed", "connected", "linked" are used, they should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0031] Embodiment 1

[0032] A multi - angle rotatable and detachable exhaust pipe for the vacuum ladle ejector 1 of an electrolytic cell, comprising a first horizontal pipe 32, a vertical pipe 33, and a second horizontal pipe 34 that are connected in sequence. The vertical pipe 33 is rotatably connected to the first horizontal pipe 32 and the second horizontal pipe 34 through a rotating elbow mechanism 4. The second horizontal pipe 34 is also rotatably provided with a nozzle 35 for jetting air flow into the gas collection hood of the electrolytic cell.

[0033] In this embodiment, the exhaust pipe is applied to the vacuum ladle ejector 1 of the electrolytic cell, and substances such as dust, HF, and CO in the exhaust air enter the gas collection hood of the electrolytic cell.

[0034] In this embodiment, it further includes a flange 31 for connecting the exhaust port of the ejector 1, and the first horizontal pipe 32 is connected to the flange 31.

[0035] In this embodiment, the nozzle 35 is perpendicular to the radial plane of the second horizontal pipe 34 and faces upward.

[0036] In this embodiment, the second horizontal pipe 34 is connected to the gas collection hood of the electrolytic cell and is higher than the liquid suction plane of the aluminum suction pipe 2.

[0037] Working principle and usage method:

[0038] Adopting this technical solution, the gas discharged from the ejector 1 is recovered into the gas collection hood of the electrolytic cell through the exhaust pipe, so that substances such as dust, HF, and CO enter the electrolytic cell for further utilization or are uniformly collected into the waste residue, reducing the pollution in the factory area;

[0039] Moreover, through the rotational cooperation of the two sets of rotating elbow mechanisms 4, the exhaust duct can achieve multi-angle rotation, height adjustment, and inlet direction adjustment. According to the specific positions of the vacuum ladle and the electrolytic cell, the angle and height of the exhaust duct leading into the gas collection hood of the electrolytic cell are adjusted to prevent the discharged gas from directly spraying onto the filtrate liquid surface and affecting the operation of the liquid suction pipe 2.

[0040] The installation of this exhaust duct is simple, and the adjustment operation is easy, making it suitable for various application scenarios of vacuum ladles.

[0041] Embodiment 2

[0042] The difference between this embodiment and Embodiment 1 lies in that, in this embodiment, the rotating elbow mechanism 4 includes a first connecting member 41 and a second connecting member 44 respectively connecting the pipe fittings at both ends, an elbow 45 connecting the second connecting member 44, and a rotating sleeve 43 rotatably connecting the elbow 45 and the first connecting member 41.

[0043] In this embodiment, the first connecting member 41 is a connecting flange 31, and the connecting flange 31 is further provided with a pressing flange 42. An L-shaped cross-sectional gap 411 for fixing and limiting the rotating sleeve 43 is provided between the connecting flange 31 and the pressing flange 42.

[0044] In this embodiment, the second connecting member 44 is a tapered socket.

[0045] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, various changes and modifications can be made to the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A multi-angle rotatable and detachable exhaust pipe of a vacuum ladle ejector, characterized in that: It includes a first horizontal pipe (32), a vertical pipe (33), and a second horizontal pipe (34) that are connected in sequence. The vertical pipe (33) is rotatably connected to the first horizontal pipe (32) and the second horizontal pipe (34) through a rotating elbow mechanism (4). The second horizontal pipe (34) is also rotatably provided with a nozzle (35) for jetting air flow towards the recovery device.

2. The exhaust duct of the vacuum ladle ejector that can be rotated and disassembled at multiple angles according to claim 1, wherein: The rotating elbow mechanism (4) includes a first connector (41) and a second connector (44) that are respectively connected to the pipe fittings at both ends, an elbow (45) connected to the second connector (44), and a rotating sleeve (43) that rotatably connects the elbow (45) and the first connector (41).

3. A multi-angle rotatable and detachable exhaust duct of a vacuum ladle ejector according to claim 2, characterized in that: The first connector (41) is a connecting flange, and the connecting flange is also provided with a pressing flange (42). An L-shaped cross-sectional gap (411) for fixing and limiting the rotating sleeve (43) is provided between the connecting flange and the pressing flange (42).

4. A multi-angle rotatable and detachable exhaust duct of a vacuum ladle ejector according to claim 2 or 3, characterized in that: The second connector (44) is a taper socket.

5. A multi-angle rotatable and detachable exhaust duct of a vacuum ladle ejector according to any one of claims 1-3, characterized in that: It further includes a flange (31) for connecting the exhaust port of the ejector (1), and the first horizontal pipe (32) is connected to the flange (31).

6. A multi-angle rotatable and detachable exhaust duct for a vacuum ladle ejector according to any one of claims 1 to 3, characterized in that: The nozzle (35) is perpendicular to the radial plane of the second horizontal pipe (34) and faces upward.

7. A multi-angle rotatable and detachable exhaust duct of a vacuum ladle ejector according to any one of claims 1 to 3, characterized in that: The second horizontal pipe (34) communicates with the recovery device and is higher than the liquid suction plane of the liquid suction pipe (2).

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