Smelting furnace liquid level detection device

Abstract

The utility model discloses a smelting furnace liquid level detection device, and relates to the technical field of liquid level detection devices, the smelting furnace liquid level detection device comprises a fixed substrate fixed on a smelting furnace, the inner side of the fixed substrate is provided with a limiting chute along the vertical direction, the limiting chute is internally provided with a liquid level detector in a sliding manner, one side of the liquid level detector is provided with an erecting rod, and the erecting rod is provided with a liquid level sensor. When the temperature in the smelting furnace is too high, the alloy coil spring made of the memory alloy is deformed and shrunk due to the high temperature, so that the torsion spring shaft is driven to drive the winding wheel to rotate, the winding wheel winds the traction rope, the traction rope pulls the liquid level detector to slide upwards along the limiting sliding groove, and therefore the liquid level detector is lifted to the topmost portion of the smelting furnace; the influence of the temperature in the furnace on the liquid level detector is reduced to the maximum extent, the liquid level detector is prevented from being damaged due to overheating, the liquid level detector moves upwards and can enter the heat insulation box, the heat insulation cushion layer laid in the heat insulation box can effectively block the high temperature in the furnace, and therefore good heat insulation protection is formed for the liquid level detector.

Description

Technical Field

[0001] This utility model relates to the technical field of liquid level detection devices, specifically to a furnace liquid level detection device. Background Technology

[0002] A furnace is a device used to heat solid materials to high temperatures and melt them. It is widely used in industries such as metallurgy, glass manufacturing, ceramics, and ore smelting. The working principle of a furnace is to use the heat energy generated by heating elements to heat the material to a temperature above its melting point, causing it to change from a solid to a liquid state.

[0003] In order to achieve quantitative melting during the use of a furnace, a liquid level detection device is often installed on the top of the furnace to monitor the liquid metal level inside the furnace in real time. However, the existing liquid level detection devices are often fixedly installed on the furnace. If the furnace malfunctions and the internal temperature becomes too high, the liquid level detection device is easily damaged by overheating, which poses a certain safety hazard to the use of the liquid level detection device. Utility Model Content

[0004] The purpose of this invention is to provide a furnace liquid level detection device to solve the technical problem that most existing furnace liquid level detection devices have fixed installation positions and are prone to overheating and damage when the furnace temperature is too high.

[0005] The technical problem to be solved by this utility model can be achieved through the following technical solution:

[0006] Furnace liquid level detection device

[0007] The device includes a fixed base plate fixed on a furnace. A limiting groove is formed on the inner side of the fixed base plate in the vertical direction. A liquid level detector is slidably arranged inside the limiting groove. A support rod is provided on one side of the liquid level detector and is located inside the limiting groove. The width of the support rod is smaller than the width of the limiting groove. A limiting strip is provided at one end of the support rod and is located on the side of the fixed base plate away from the liquid level detector.

[0008] A torsion spring shaft is rotatably mounted on the lower end of the fixed base plate away from the liquid level detector. A winding wheel is mounted on one end of the torsion spring shaft, and an alloy coil spring is mounted on the outer side of the torsion spring shaft. The winding wheel is connected to the limiting strip by a traction rope.

[0009] As a further aspect of this invention, the alloy coil spring is made of a shape memory alloy that shrinks under heat.

[0010] As a further embodiment of this utility model: a number of small rollers are rotatably arranged on the side of the limiting strip near the liquid level detector, and the small rollers are located inside the limiting groove, with the outer wall of the small rollers in contact with the inner wall of the limiting groove.

[0011] As a further embodiment of this utility model: a fixing plate is provided on one side of the liquid level detector, and the fixing plate is located below the support rod. One side of the fixing plate is rotatably connected to one end of the small roller shaft. A guide wheel for guiding the traction rope is provided on the upper end of the side of the fixing plate where the winding wheel is located.

[0012] As a further embodiment of this utility model: a heat insulation box matching the liquid level detector is provided on the upper end of one side of the fixed base plate, and a heat insulation pad is laid inside the heat insulation box, and a movable end plate is rotatably provided at the lower end of the heat insulation box.

[0013] As a further embodiment of this utility model: a blocking plate for supporting the movable end plate is movably inserted on one side of the fixed base plate where the heat insulation box is provided, and fixed brackets for fixing to the furnace are symmetrically provided on both sides of the fixed base plate.

[0014] The beneficial effects of this utility model are:

[0015] In this invention, when the temperature inside the furnace is too high, the alloy coil spring made of shape memory alloy deforms and contracts due to the high temperature. This drives the torsion spring shaft to rotate the winding wheel, which in turn winds up the traction rope. The traction rope pulls the liquid level detector upward along the limiting slide groove, thereby lifting the liquid level detector to the top of the furnace. This minimizes the impact of the furnace temperature on the liquid level detector and prevents it from overheating and being damaged. The upward movement of the liquid level detector allows it to enter the heat insulation box. The heat insulation pads laid inside the heat insulation box effectively block the high temperature inside the furnace, thus providing good heat insulation protection for the liquid level detector. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings.

[0017] Figure 1 This is a three-dimensional schematic diagram of the device in this utility model;

[0018] Figure 2 This is a three-dimensional schematic diagram of the liquid level detector in this utility model;

[0019] Figure 3 This is a three-dimensional schematic diagram of the winding reel in this utility model;

[0020] Figure 4 This is a schematic diagram of the movable end plate structure in this utility model.

[0021] In the diagram: 1. Fixed base plate; 2. Limiting slide groove; 3. Liquid level detector; 4. Support rod; 5. Limiting strip; 6. Small roller; 7. Fixed plate; 8. Torsion spring shaft; 9. Winding wheel; 10. Alloy coil spring; 11. Guide wheel; 12. Traction rope; 13. Heat insulation box; 14. Movable end plate; 15. Barrier plate; 16. Fixed bracket. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0023] like Figure 1-4 As shown, a furnace liquid level detection device.

[0024] The system includes a fixed base plate 1 fixed to a furnace. A vertically oriented limiting groove 2 is formed on the inner side of the fixed base plate 1. A liquid level detector 3 is slidably mounted inside the limiting groove 2. A support rod 4 is mounted on one side of the liquid level detector 3, and the support rod 4 is located inside the limiting groove 2. The width of the support rod 4 is less than the width of the limiting groove 2. A limiting strip 5 is mounted at one end of the support rod 4, and the limiting strip 5 is located on the side of the fixed base plate 1 away from the liquid level detector 3. A torsion spring shaft 8 is rotatably mounted at the lower end of the side of the fixed base plate 1 away from the liquid level detector 3. A winding wheel 9 is mounted at one end of the torsion spring shaft 8, and an alloy coil spring 10 is mounted on the outer side of the torsion spring shaft 8. The alloy coil spring 10 is made of a heat-shrinkable shape memory alloy. The winding wheel 9 and the limiting strip 5 are connected by a traction rope 12. The connection allows for real-time monitoring of the liquid metal level in the furnace via the liquid level detector 3, ensuring smooth smelting operations. When the furnace malfunctions and its internal temperature becomes too high, the shape memory alloy coil spring 10 deforms and contracts under the high temperature, driving the torsion spring shaft 8 to rotate. The torsion spring shaft 8 then synchronously drives the winding wheel 9 to rotate, which in turn winds up the traction rope 12. One end of the traction rope 12 is connected to the limit strip 5 on the liquid level detector 3, allowing the liquid level detector 3 to slide upwards along the limit slide 2, thus raising it to the top of the furnace. This minimizes the impact of the furnace temperature on the liquid level detector 3 and prevents it from overheating and being damaged.

[0025] In this embodiment, specifically, a number of small rollers 6 are rotatably arranged on the side of the limiting bar 5 near the liquid level detector 3, and the small rollers 6 are located inside the limiting groove 2. The outer wall of the small rollers 6 is in contact with the inner wall of the limiting groove 2. A fixing plate 7 is provided on one side of the liquid level detector 3, and the fixing plate 7 is located below the support rod 4. One side of the fixing plate 7 is rotatably connected to one end of the small rollers 6. A guide wheel 11 is provided on the upper end of the side of the fixing base plate 1 where the winding wheel 9 is provided to guide the traction rope 12. When the liquid level detector 3 slides upward along the limiting groove 2, the small rollers 6 contact the inner wall of the limiting groove 2 and roll, which can convert the sliding friction of the liquid level detector 3 during movement into rolling friction, reducing the movement resistance, making it easier for the winding wheel 9 to lift the liquid level detector 3. The setting of the guide wheel 11 guides the movement trajectory of the traction rope 12, ensuring that the traction rope 12 will not hinder the normal movement of the liquid level detector 3 during movement.

[0026] In this embodiment, specifically, a heat insulation box 13 matching the liquid level detector 3 is provided on the upper end of one side of the fixed base plate 1, and a heat insulation pad is laid inside the heat insulation box 13. A movable end plate 14 is rotatably provided on the lower end of the heat insulation box 13. A baffle plate 15 for supporting the movable end plate 14 is movably inserted on one side of the fixed base plate 1 where the heat insulation box 13 is provided. The movable end plate 14 can be flipped, and the baffle plate 15 provides support for the movable end plate 14 from below. When the furnace malfunctions and the temperature is too high, causing the liquid level detector 3 to move upward, the movable end plate 14... When squeezed by the upward movement of the liquid level detector 3, it can only flip upward. It should be noted that when the movable end plate 14 flips to its maximum stroke, there is a distance between its end and the liquid level detector 3. This ensures that after the liquid level detector 3 enters the heat insulation box 13, the movable end plate 14 can be smoothly reset to re-seal the heat insulation box 13. The heat insulation pad layer laid inside the heat insulation box 13 can effectively block the high temperature inside the furnace, thus forming good heat insulation protection for the liquid level detector 3. After the furnace maintenance is completed, the staff can remove the baffle plate 15, so that the movable end plate 14 can be placed downward, making it convenient for the liquid level detector 3 to reset.

[0027] In this embodiment, specifically, fixed brackets 16 are symmetrically arranged on both sides of the fixed base plate 1 to form a fixed structure with the furnace. The device is installed on the furnace by the fixed brackets 16, which ensures the overall stability of the device during use. In addition, the material of the fixed brackets 16 is a poor conductor of heat, so it can effectively reduce the conduction of heat on the inner wall of the furnace and ensure that the overall temperature of the device will not be too high.

[0028] The above description provides a detailed account of one embodiment of the present invention. However, this description is merely a preferred embodiment and should not be construed as limiting the scope of the present invention. All equivalent variations and improvements made within the scope of the claims of the present invention should still fall within the patent coverage of the present invention.

Claims

1. A furnace liquid level detection device, characterized in that: it comprises a fixed base plate (1) fixed on the furnace, the inner side of the fixed base plate (1) is provided with a limiting sliding groove (2) in the vertical direction, the liquid level detector (3) is slidably arranged in the limiting sliding groove (2), one side of the liquid level detector (3) is provided with a erecting rod (4), and the erecting rod (4) is located in the limiting sliding groove (2), the width of the erecting rod (4) is smaller than the width of the limiting sliding groove (2), one end of the erecting rod (4) is provided with a limiting strip (5), and the limiting strip (5) is located on the side of the fixed base plate (1) away from the liquid level detector (3); a torsion spring shaft (8) is rotatably arranged at the lower end of the side of the fixed base plate (1) away from the liquid level detector (3), one end of the torsion spring shaft (8) is provided with a winding wheel (9), an alloy coil spring (10) is arranged on the outer side of the torsion spring shaft (8), and the winding wheel (9) and the limiting strip (5) are connected through a traction rope (12). The alloy coil spring (10) is made of a memory alloy that shrinks under heat.

2. The furnace level detection apparatus of claim 1, wherein A plurality of groups of small roller shafts (6) are rotatably arranged on the side of the limiting strip (5) close to the liquid level detector (3), and the small roller shafts (6) are located in the limiting sliding groove (2), and the outer wall of the small roller shaft (6) is in contact with the inner wall of the limiting sliding groove (2).

3. The furnace level detection apparatus of claim 1, wherein A fixed plate (7) is arranged on the side of the liquid level detector (3) and below the erecting rod (4), one side of the fixed plate (7) is rotatably connected with one end of the small roller shaft (6), and the fixed base plate (1) is provided with a guide wheel (11) on the upper end of the side where the winding wheel (9) is arranged, which is used for guiding the traction rope (12).

4. The furnace level detection apparatus of claim 3, wherein The fixed base plate (1) is provided with a heat insulation box (13) on the upper end of the side where the liquid level detector (3) is arranged, which is matched with the liquid level detector (3), and a heat insulation pad layer is arranged in the heat insulation box (13), and a movable end plate (14) is rotatably arranged at the lower end of the heat insulation box (13).

5. The furnace level detection apparatus of claim 1, wherein A blocking plate (15) for supporting the movable end plate (14) is movably connected to the side of the fixed base plate (1) where the heat insulation box (13) is arranged, and the fixed base plate (1) is provided with fixed supports (16) symmetrically arranged on the two side edges, which are used for fixing the furnace.

6. The furnace level detection apparatus of claim 5, wherein ​

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