Launder cover flipping device

Abstract

The present invention relates to the technical field of molten aluminum purification, and discloses a flap device for a launder cover. The launder cover is arranged on the top of a launder. The flap device includes a lower hinge plate, a telescopic device, and a connecting arm. The lower hinge plate is connected to the launder through a spring and is in sliding cooperation with the launder. One end of the telescopic device is hinged to the lower hinge plate, and the other end is hinged to the connecting arm. The connecting arm is fixed to the launder cover, and the connecting arm is connected to the launder through a rotating shaft. The structure of the present invention is simple, the design is reasonable, the cost is low, it is easy to implement, the installation is convenient, and the safety performance is high. It greatly prolongs the service life of the electric push rod, reduces the replacement frequency and use cost of the electric push rod, and at the same time reduces the workload of employees in replacing the electric push rod, reduces the labor intensity, and improves the production efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of aluminum water purification, and particularly relates to a chute cover flipping device. Background Art

[0002] Currently, in the aluminum water purification industry, the chute for passing aluminum water needs to be covered for heat preservation. Some need to use an electric heating cover for heat preservation, and the chute cover needs to adopt an automatic flipping form. Generally, an electric push rod is used as the power source for the chute cover flipping, and the lever principle is used for flipping the cover. Since the transmission of the electric push rod belongs to a rigid transmission form, when there is no debris on the contact surface between the chute and the chute cover, the electric push rod for flipping the chute cover works normally; when there is debris on the contact surface between the chute and the chute cover, there is a gap between the chute and the chute cover. The stroke of the electric push rod should theoretically be shortened, but the stroke of the electric push rod will still transmit power according to the established stroke, and the electric push rod will stop only when the stroke is in place, which will cause the electric push rod to bend, deform and break, or the tooth profile of the worm and worm gear inside the electric push rod to break due to excessive force, making the electric push rod unable to continue working, causing a great impact on production, and it will also be damaged irregularly after replacing the electric push rod.

[0003] Therefore, based on the above technical problems, improvements are needed. Summary of the Invention

[0004] In view of the technical problems existing in the prior art, the present invention provides a chute cover flipping device that combines rigid motion and flexible motion, has high safety and a long service life.

[0005] To achieve the above object, the present invention provides the following technical solution: a chute cover flipping device, the chute cover is arranged on the top of the chute, the flipping device includes a lower hinge plate, a telescopic device, and a connecting arm. The lower hinge plate is connected to the chute through a spring and is slidably matched with the chute. One end of the telescopic device is hinged to the lower hinge plate, and the other end is hinged to the connecting arm. The connecting arm is fixed to the chute cover, and the connecting arm is connected to the chute through a rotating shaft.

[0006] When the telescopic device expands and contracts, it drives the connecting arm to rotate around the rotating shaft, and the chute cover rotates with the connecting arm, thereby realizing the flipping and closing actions of the cover.

[0007] Preferably, a connecting base is fixed on the chute, a waist-shaped hole is provided on the lower hinge plate, and a screw is arranged in the waist-shaped hole.

[0008] Preferably, the telescopic device is an electric push rod.

[0009] Preferably, a spring fixing seat is fixed on the chute, a knuckle bolt penetrates through the spring fixing seat, the knuckle bolt is connected with a nut, an end shaft is provided on the lower hinge plate, one end of the spring is connected to the knuckle bolt, and the other end is connected to the end shaft.

[0010] One end of the spring is connected to the spring fixing seat through a turnbuckle bolt. The nut can be loosened, and the length of the turnbuckle bolt extending out can be adjusted to adjust the tension of the spring. Driven by the spring, the lower hinge plate moves upward, so that the bottom of the waist-shaped hole of the lower hinge plate is in close contact with the screw, and there is a certain pre-tightening force, which is greater than the weight of the chute cover and less than the thrust of the electric push rod.

[0011] Preferably, two of each of the spring, turnbuckle bolt, nut, and end shaft are symmetrically provided. This setting can ensure the smooth sliding of the lower hinge plate.

[0012] When the chute cover is in the closed state and the contact surface between the chute and the chute cover is in good contact, the electric push rod is at its maximum stroke.

[0013] Working process of the chute cover flipping: The electric push rod is powered on, and its stroke starts to shorten. The electric push rod drives the chute cover to slowly flip through the connecting arm. Under the action of the spring force, the lower part of the waist-shaped hole on the lower hinge plate is in close contact with the screw; when the electric push rod is at its shortest stroke, the electric push rod completes its movement and stops moving, completing the flipping work of the chute cover. At this time, the opening angle of the chute cover is greater than 84°, and the molten aluminum inside the chute can be observed or the aluminum slag inside the chute can be cleaned.

[0014] Normal closing working process of the chute cover: When there is no foreign object on the sealing surface between the chute and the chute cover, the electric push rod is powered on and starts to extend, and drives the chute cover to slowly flip through the connecting arm. Under the action of the spring force, the lower part of the waist-shaped hole on the lower hinge plate is in close contact with the screw. When the electric push rod reaches its maximum stroke, the electric push rod completes its movement and stops moving, completing the closing work of the chute cover. At this time, the chute cover and the chute are well sealed and everything is normal.

[0015] Abnormal closing working process of the chute cover (such phenomena often occur): When there is a foreign object on the contact surface between the chute and the chute cover, the electric push rod is powered on and starts to extend, and drives the chute cover to slowly flip through the connecting arm. Under the action of the spring force, the lower part of the waist-shaped hole on the lower hinge plate is in close contact with the screw. Due to the foreign object on the contact surface between the chute and the chute cover, the contact surface between the chute and the chute cover cannot be well sealed, and there will be a gap in the middle. The stroke of the electric push rod should theoretically decrease, but since the movement of the electric push rod is a rigid transmission, the stroke of the electric push rod will not automatically decrease, and the electric push rod must reach its maximum stroke before it can stop moving. When the chute cover contacts the foreign object and cannot continue to close due to the resistance of the foreign object, the electric push rod is still increasing its stroke. When the thrust of the moving electric push rod is greater than the tension of the spring, it forces the lower hinge plate to move downward along the waist-shaped hole to release the uncompleted stroke of the electric push rod, avoiding damage to the electric push rod due to not reaching the maximum stroke or excessive thrust, playing a protective role, being beneficial to the long-term stable operation of the electric push rod, and extending its service life.

[0016] The present invention further includes other components that can enable the chute cover flipping device to be used normally, all of which are conventional technical means in the art. In addition, devices or components not defined in the present invention all adopt conventional technical means in the art.

[0017] The present invention has a simple structure, reasonable design, low cost, easy implementation, convenient installation, high safety performance, greatly extends the service life of the electric push rod, reduces the replacement frequency and use cost of the electric push rod, at the same time also reduces the workload of employees in replacing the electric push rod, reduces the labor intensity, improves the production efficiency, and realizes the dual purposes of economy and high efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural diagram of this embodiment.

[0019] Figure 2 is Figure 1 an enlarged schematic view of part A in

[0020] Figure 3 is a rear view of this embodiment.

[0021] Figure 4 is Figure 3 a sectional view taken along the line B-B of

[0022] Figure 5 is a front view of the lower hinge plate in this embodiment.

[0023] Figure 6 is a schematic structural diagram of the lower hinge plate in this embodiment.

[0024] In the figure: 1, chute cover; 2, chute; 3, lower hinge plate; 4, telescopic device; 5, connecting arm; 6, spring; 7, rotating shaft; 8, connecting base; 9, waist-shaped hole; 10, screw; 11, spring fixing seat; 12, turnbuckle bolt; 13, nut; 14, end shaft. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] Next, the technical solutions of the present invention will be clearly and completely described in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without making creative efforts shall fall within the protection scope of the present invention.

[0026] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention 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 should not be construed as a limitation to the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0027] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", "connected to" 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 invention can be understood according to specific circumstances.

[0028] Embodiment

[0029] See Figures 1-6 , a chute cover flipping device, wherein the chute cover 1 is provided on the top of the chute 2. The flipping device includes a lower hinge plate 3, a telescopic device 4, and a connecting arm 5. The lower hinge plate 3 is connected to the chute through a spring 6 and is slidably matched with the chute. One end of the telescopic device 4 is hinged to the lower hinge plate 3, and the other end is hinged to the connecting arm 5. The connecting arm 5 is fixed to the chute cover, and the connecting arm is connected to the chute through a rotating shaft 7.

[0030] In this embodiment, both ends of the connecting arm are respectively connected to the chute cover and the telescopic device. The rotating shaft is located in the middle of the connecting arm and is connected to the support plate, and the support plate is fixed to the chute. When the telescopic device expands and contracts, it drives the connecting arm to rotate around the rotating shaft, and the chute cover rotates with the connecting arm, thereby realizing the flipping and closing actions.

[0031] A connecting base 8 is fixed on the chute. A waist-shaped hole 9 is provided on the lower hinge plate 3, and a screw 10 is provided in the waist-shaped hole 9.

[0032] In this embodiment, the connecting base 8 is welded to the chute 2. The lower hinge plate 3 is connected to the connecting base 8 through the screw 10. Four waist-shaped holes 9 are provided on the lower hinge plate 3. The lower hinge plate 3 can slide on the connecting base 8 and is guided by the screw 10; the screw 10 is selected as an internal hexagonal socket head screw.

[0033] The telescopic device 4 is an electric push rod.

[0034] A spring fixing seat 11 is fixed on the chute. A loose joint bolt 12 penetrates through the spring fixing seat. The loose joint bolt 12 is connected with a nut 13. An end shaft 14 is arranged on the lower hinge plate 3. One end of the spring 6 is connected to the loose joint bolt 12, and the other end is connected to the end shaft 14.

[0035] One end of the spring 6 is connected to the spring fixing seat through the loose joint bolt 12. The nut 13 can be loosened, and the length of the loose joint bolt 12 extending out can be adjusted to adjust the tension of the spring. The spring 6 drives the lower hinge plate 3 to move upward, so that the bottom of the waist-shaped hole on the lower hinge plate 3 is in close contact with the screw 10, and there is a certain pre-tightening force, which is greater than the weight of the chute cover and less than the thrust of the electric push rod.

[0036] Two of each of the spring 6, the loose joint bolt 12, the nut 13, and the end shaft 14 are symmetrically arranged. This setting can ensure the smooth sliding of the lower hinge plate 3.

[0037] The tension of the spring 6 is greater than the weight of the chute cover and less than the thrust of the electric push rod.

[0038] This embodiment also includes a power supply, an operation box, etc., which are prior arts and will not be elaborated here.

[0039] When the chute cover is in the closed state and the contact surface between the chute 2 and the chute cover 1 is in good contact, the electric push rod is at its maximum stroke.

[0040] Process of the chute cover flipping: The electric push rod is powered on, and its stroke starts to shorten. The electric push rod drives the chute cover to slowly flip through the connecting arm 5. Under the action of the spring force, the lower part of the waist-shaped hole 9 on the lower hinge plate 3 is in close contact with the screw 10. When the electric push rod is at its shortest stroke, the electric push rod completes its movement and stops moving, completing the flipping work of the chute cover. At this time, the opening angle of the chute cover is greater than 84°, and the inside of the chute 2 can be observed or the aluminum slag inside the chute 2 can be cleaned.

[0041] Process of the chute cover normally closing: When there is no foreign object on the sealing surface between the chute 2 and the chute cover, the electric push rod is powered on and starts to extend, and drives the chute cover to slowly flip through the connecting arm 5. Under the action of the spring force, the lower part of the waist-shaped hole 9 on the lower hinge plate 3 is in close contact with the screw 10. When the electric push rod reaches its maximum stroke, the electric push rod completes its movement and stops moving, completing the closing work of the chute cover. At this time, the chute cover and the chute 2 are in good sealing and everything is normal.

[0042] Abnormal process of closing the chute cover (such phenomena often occur): When there is foreign matter on the contact surface between the chute 2 and the chute cover, the electric push rod is energized and starts to extend, and drives the chute cover to slowly flip through the connecting arm 5. Under the action of the spring force, the lower part of the waist-shaped hole 9 on the lower hinge plate 3 is in close contact with the screw 10. Due to the foreign matter on the contact surface between the chute 2 and the chute cover, the contact surface between the chute 2 and the chute cover cannot be sealed well, and a gap will be generated in the middle. The stroke of the electric push rod should theoretically decrease, but since the movement of the electric push rod belongs to rigid transmission, the stroke of the electric push rod will not automatically decrease. The electric push rod must reach the maximum stroke to stop moving. When the chute cover contacts the foreign matter and cannot continue the closing movement due to the resistance of the foreign matter, the electric push rod is still increasing its stroke. When the thrust of the moving electric push rod is greater than the tension of the spring 6, it forces the lower hinge plate 3 to move downward along the waist-shaped hole to release the uncompleted stroke of the electric push rod, avoiding damage to the electric push rod due to failure to reach the maximum stroke or excessive thrust, playing a protective role, being beneficial to the long-term stable operation of the electric push rod, and extending its service life.

[0043] When the contact surface between the chute 2 and the chute cover is not tightly sealed, remove the foreign matter between them and then close the cover again.

[0044] The present invention combines rigid transmission and flexible transmission through an electric push rod and spring buffering, avoiding the loss of its internal components when the stroke of the electric push rod is blocked due to various reasons, greatly reducing the damage rate of the electric push rod, ensuring the continuity of production, improving production efficiency, completely eliminating the potential safety hazards existing during the work of the electric push rod for flipping the chute cover, greatly reducing production costs, at the same time avoiding the physical harm to employees caused by replacing the electric push rod in a high-temperature environment, reducing the work intensity of employees, and ensuring the safe operation of production.

[0045] The embodiments of the present invention have been described above. The above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and variations are obvious to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments.

Claims

1. Spout cover flipping device, the spout cover is arranged on the top of the spout, characterized in that: The flip device includes a lower hinge plate, a telescopic device, and a connecting arm. The lower hinge plate is connected to the chute by a spring and is slidably engaged with the chute. The pre-tightening force of the spring is greater than the weight of the chute cover and less than the thrust of the telescopic device. One end of the telescopic device is hinged to the lower hinge plate, and the other end is hinged to the connecting arm. The connecting arm is fixed to the chute cover, and the connecting arm is connected to the chute through a rotating shaft; A connecting base is fixed on the chute, a waist-shaped hole is provided on the lower hinge plate, and a screw is provided in the waist-shaped hole; A spring fixing seat is fixed on the chute, a loose joint bolt penetrates through the spring fixing seat, the loose joint bolt is connected with a nut, an end shaft is provided on the lower hinge plate, one end of the spring is connected to the loose joint bolt, and the other end is connected to the end shaft.

2. The chute cover flipping device according to claim 1, wherein: The telescopic device is an electric push rod.

3. The chute cover flip device according to claim 1, characterized in that: Two of each of the spring, the loose joint bolt, the nut, and the end shaft are symmetrically provided.

Images