A device for controlling the slag inlet switch of a slag funnel.

Abstract

This utility model discloses a device for controlling the slag inlet switch of a slag adding funnel, belonging to the field of control switch technology. It includes a insert for controlling the slag inlet switch, the insert being fixed to one end of an external lever of the slag adding funnel. A weight greater than the insert is fixed to the other end of the lever. The middle of the lever is hinged to a connecting rod via a screw. The upper end of the connecting rod is fixed to the outer wall of the slag adding funnel. The weight is connected to a pull rope on a fixed pulley, which is fixed to the outer wall of the slag adding funnel via a fixing rod. In its natural state, the slag inlet remains closed. When it needs to be opened, the operator can remotely operate it. After slag addition is completed, the external force is removed, and the slag inlet returns to its closed state.

Description

Technical Field

[0001] This utility model belongs to the field of control switch technology, specifically relating to a device for controlling the slag inlet switch of a slag funnel. Background Technology

[0002] When adding slag during casting operations using an extra-large horizontal centrifugal casting machine, the protective slag must first be added to the slag funnel. Then, an overhead crane is used to lift the slag funnel above the slag trough. The opening and closing of the slag inlet is controlled by a baffle plate, and the movement of the overhead crane ensures that the protective slag flows evenly into the slag trough. However, when the baffle plate needs to be inserted to close the slag inlet after the slag is added, the process is extremely difficult because the protective slag in the slag funnel is still falling. It often cannot be completed within the specified time. If the appropriate time is exceeded, too much protective slag will be added to the slag trough, which will affect subsequent casting operations and reduce the quality of the finished product. Utility Model Content

[0003] The purpose of this invention is to provide a device for controlling the opening and closing of the slag inlet of the slag funnel. Under normal conditions, the slag inlet remains closed. When it needs to be opened, the operator can operate it remotely. After the slag is added, the external force is removed, and the slag inlet returns to the closed state.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] A device for controlling the slag inlet switch of a slag adding funnel includes a insert for controlling the slag inlet switch. The insert is fixed to one end of an external lever of the slag adding funnel. A weight greater than the insert is fixed to the other end of the lever. The middle part of the lever is hinged to a connecting rod via a screw. The upper end of the connecting rod is fixed to the outer wall of the slag adding funnel. The weight is connected to a pull rope on a fixed pulley. The fixed pulley is fixed to the outer wall of the slag adding funnel via a fixing rod.

[0006] A further improvement of this utility model is that the end of the pull rope is connected to a pull ring for easy operation.

[0007] A further improvement of this utility model is that the inner wall of the groove of the fixed pulley is provided with texture to increase friction, and the pull rope is a rough-surfaced nylon rope.

[0008] A further improvement of this utility model is that graphite copper sleeves are installed on the outer rings of the shafts of both the screw and the fixed pulley.

[0009] A further improvement of this utility model is that the entire device is made of high-temperature resistant metal material.

[0010] The technological advancements achieved by this utility model due to the adoption of the above technical solution are as follows:

[0011] This invention combines a pull rope, a fixed pulley, and a lever mechanism, allowing the operator to operate the slag-adding funnel from a location away from the high-temperature slag-adding hopper via a pull ring. This improves working conditions and enhances operational safety and convenience. The lever principle and the counterweight effect of the weight block greatly reduce the operating force required to open or close the slag-adding port, making the operation labor-saving and efficient.

[0012] The core of this invention is the utilization of gravitational potential energy. Under natural conditions, a heavier block will fall under the influence of gravity, forcing a lever to insert a plate, thus reliably closing the slag inlet and preventing accidental slag leakage. Only when slag needs to be added is the weight of the block lifted by pulling a rope, thereby opening the slag inlet. Once the rope is released, the device automatically resets and closes under the weight of the block, ensuring high safety and preventing accidents caused by human negligence in forgetting to close it.

[0013] This invention uses high-temperature resistant metal materials to ensure that the entire device can work stably for a long time in high-temperature environments without deforming or failing due to high temperatures. The screw hinge point and fixed pulley shaft of the rotating parts are equipped with graphite copper sleeves, which are excellent self-lubricating bearing materials, especially suitable for high-temperature and low-speed applications. They effectively reduce the wear of moving parts, prevent the mechanism from jamming due to the failure of high-temperature lubricating grease, greatly extend the service life of the device, and reduce maintenance requirements.

[0014] The textured inner wall of the pulley groove and the rough nylon rope of this invention increase the friction between them, effectively preventing the rope from slipping on the pulley and ensuring that the traction force of the rope can be accurately transmitted to the lever mechanism, making the switching action more stable and controllable. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Among them, 1. slag funnel; 2. insert plate; 3. connecting rod; 4. screw; 5. lever; 6. weight; 7. pull rope; 8. fixed pulley; 9. fixing rod; 10. pull ring. Detailed Implementation

[0017] The present invention will be further described in detail below with reference to embodiments:

[0018] like Figure 1As shown, a device for controlling the slag inlet opening of a slag-adding funnel includes a slag-adding funnel 1, a insert 2, a connecting rod 3, a screw 4, a lever 5, a weight 6, a pull rope 7, a fixed pulley 8, a fixing rod 9, and a pull ring 10. The bottom of the slag-adding funnel 1 has a slag inlet for adding protective slag to the surface of molten steel or other melts. The insert 2 is made of high-temperature resistant stainless steel, and its shape matches the slag inlet of the slag-adding funnel 1. The insert 2 is fixedly installed on the right end of the lever 5 by welding. Figure 1 Taking the perspective as an example, the slag inlet is closed and opened by the vertical insertion and withdrawal of the insert 2; the lever 5 is a straight rod made of high-temperature resistant steel, with the insert 2 fixed at its right end and a weight 6 fixed at its left end; the weight 6 is a cast iron block, and its weight is significantly greater than the weight of the insert 2 and its connecting parts to ensure sufficient gravitational potential energy to automatically close the slag inlet; a through hole is provided in the middle of the lever 5, which is hinged to the lower end of the connecting rod 3 by a screw 4; the upper end of the connecting rod 3 is fixed to the outside of the slag funnel 1 by welding. On the wall; the screw 4 serves as the hinge shaft, and its outer ring is fitted with a graphite copper sleeve to ensure that the hinge point can still rotate flexibly in high-temperature environments without additional lubrication; the fixed pulley 8 is fixed to the outer wall of the slag funnel 1 by a fixing rod 9, and its installation position is above the weight 6; the inner wall of the groove of the fixed pulley 8 is machined with a mesh-like anti-slip texture to increase friction, and the outer ring of the shaft of the fixed pulley 8 is also fitted with a graphite copper sleeve to ensure smooth rotation of the pulley; the pull rope 7 is made of rough-surfaced nylon rope, one end of which is connected to the weight 6 at the left end of the lever 5. After the pull rope 7 passes upward around the groove of the fixed pulley 8, the other end is vertically downward and connected to a metal pull ring 10 for the operator to grip.

[0019] Working principle and process:

[0020] Normally closed state: such as Figure 1 As shown, in its natural, non-operating state, the weight 6, being heavier than the weight of the insert 2, causes the left end of the lever 5 to drop downwards, while the right end tilts upwards. This allows the insert 2, fixed to the right end of the lever 5, to be deeply inserted into the slag inlet of the slag funnel 1, reliably sealing the slag inlet and preventing accidental leakage of the protective slag.

[0021] Operation: When slag needs to be added, the operator stands at a safe distance and pulls down the pull ring 10. The pull rope 7 changes the direction of the force through the fixed pulley 8, converting the downward pulling force into an upward lifting force on the weight 6. When the pulling force overcomes the weight of the weight 6, the weight 6 is lifted upward, and the lever 5 rotates counterclockwise around the hinge point of the screw 4. Its right end drives the insert 2 to move downward and be pulled out of the slag filling port, thereby opening the slag filling port for slag addition.

[0022] Closing Operation: After slag addition is completed, the operator slowly releases or directly releases the pull ring 10. The weight 6 falls automatically under gravity, pulling the left end of the lever 5 downwards, and the insert 2 on the right end is then reinserted into the slag addition port, achieving automatic and reliable closure.

[0023] This invention achieves remote, labor-saving, safe and reliable control of the slag filling port through the lever counterweight principle and pulley block mechanism, and is particularly suitable for high-temperature and hazardous casting industrial environments.

[0024] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.

Claims

1. A device for controlling the opening and closing of a slagging hopper slagging port, characterized by: The device includes a plug (2) for controlling the slag inlet switch. The plug (2) is fixed to one end of a lever (5) on the outside of the slag funnel (1). The other end of the lever (5) is fixed with a weight (6) that is heavier than the plug (2). The middle part of the lever (5) is hinged to a connecting rod (3) via a screw (4). The upper end of the connecting rod (3) is fixed to the outer wall of the slag funnel (1). The weight (6) is connected to a pull rope (7) on a fixed pulley (8). The fixed pulley (8) is fixed to the outer wall of the slag funnel (1) via a fixing rod (9).

2. The device for controlling the slag inlet switch of the slag funnel according to claim 1, characterized in that: The end of the pull rope (7) is connected to a pull ring (10) for easy operation.

3. A device for controlling the opening and closing of the residue inlet of a residue hopper according to claim 1, characterized in that: The inner wall of the groove of the fixed pulley (8) is provided with texture to increase friction, and the pull rope (7) is a rough-surfaced nylon rope.

4. The device for controlling the slag inlet switch of the slag funnel according to claim 1, characterized in that: The outer rings of the screw (4) and the fixed pulley (8) are both fitted with graphite copper sleeves.

5. The device for controlling the slag inlet switch of the slag funnel according to claim 1, characterized in that: The entire device is made of high-temperature resistant metal material.

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