Electrode sealing device for yellow phosphorus electric furnace

Abstract

The utility model relates to the technical field of electric furnaces, and particularly discloses an electrode sealing device for a yellow phosphorus electric furnace, which comprises a sand seal body capable of being filled with multiple layers of sealing materials, a base connected with the electric furnace is arranged at the lower end of the sand seal body, and a metal spring brush for sealing the sand seal materials in the sand seal body is arranged at the lower end of the sand seal body. And the metal spring brush is formed by embedding and pressing a plurality of metal wires which are bent into a spring structure. The technical problems that in the prior art, when an asbestos rope used for isolating and sealing gravel shakes and vibrates in the working process of an electric furnace, gaps are likely to be generated, quartz sand falls into the yellow phosphorus electric furnace, and then gas leakage occurs are solved.

Description

Technical Field

[0001] This utility model relates to the field of electric furnace technology, specifically to an electrode sealing device for a yellow phosphorus electric furnace. Background Technology

[0002] The electric furnace for yellow phosphorus is a key piece of equipment in the production of yellow phosphorus, providing the main high temperature for the chemical reaction in yellow phosphorus production. It features a high-temperature reaction environment, precise electrode control, efficient tail gas treatment capabilities, a comprehensive cooling system, and high safety performance, making it widely used in yellow phosphorus production.

[0003] However, during the production of yellow phosphorus, gaseous substances such as CO, phosphorus vapor, and sulfur dioxide are generated inside the electric furnace. To prevent these gases from escaping through the electrode holes of the electrode rod, the electrodes need to be sealed. Traditionally, yellow phosphorus electric furnace electrodes have two types: water-sealed and sand-sealed. Water-sealed electrodes have been phased out due to their significant safety hazards and short lifespan. Currently, most existing technologies use sand-sealing technology. For example, patent application CN202223233750.2 discloses an electrode sand-sealing device for yellow phosphorus electric furnaces. This device features a hollow conical column on the electrode rod, with multiple sealing layers inside: a coarse sand layer, a fine sand layer, an activated carbon layer, and an iron block layer. These multiple sealing layers enhance the sealing effect.

[0004] While existing sand sealing technology can seal the electrodes of yellow phosphorus electric furnaces, like the aforementioned patents, it involves wrapping a ring of asbestos rope around the bottom of the conical column for isolation. The asbestos rope is used to further prevent quartz sand in the conical column from falling into the yellow phosphorus electric furnace. However, the asbestos rope does not have good resilience. When the electric furnace is working, due to shaking and vibration, gaps are created between the asbestos rope and the base, leading to problems such as insulation failure inside the electric furnace and quartz sand falling into the yellow phosphorus electric furnace. Therefore, its sealing effect is poor. Utility Model Content

[0005] The purpose of this utility model is to provide an electrode sealing device for a yellow phosphorus electric furnace, which solves the technical problem mentioned above where the asbestos rope used to isolate and seal sand and gravel is prone to gaps when the electric furnace shakes and vibrates during operation, causing quartz sand to fall into the yellow phosphorus electric furnace and thus causing gas leakage.

[0006] To solve the above problems, the technical solution adopted by this utility model is as follows: an electrode sealing device for a yellow phosphorus electric furnace, comprising a sand seal body that can be filled with multiple layers of sealing material, a base connected to the electric furnace at the lower end of the sand seal body, and a metal spring brush at the lower end of the sand seal body that seals the sand seal material in the sand seal body, the metal spring brush being formed by multiple metal wires bent into a spring structure and pressed together.

[0007] The beneficial effects of this implementation plan are as follows:

[0008] 1. In the prior art, an asbestos rope is wrapped around the bottom of a conical column for isolation, and the asbestos rope is used to further prevent quartz sand in the conical column from falling into the yellow phosphorus electric furnace. However, the asbestos rope does not have good deformation recovery ability. When the electric furnace is working, due to shaking and vibration, gaps are generated between the asbestos rope and the base, leading to insulation failure in the electric furnace and quartz sand falling into the yellow phosphorus electric furnace. Its sealing effect is poor. However, in this application, a metal spring brush is provided, which is formed by multiple metal wires bent into a spring structure and pressed together. Since the metal wire itself has good deformation recovery, the metal spring brush will deform to fill the gap during shaking and vibration, so no gaps will be generated. Moreover, it can recover its deformation after shaking stops, so quartz sand will not fall and leakage will not occur, and its sealing effect is better.

[0009] Furthermore, the sand seal body is divided into two semi-circular sand seal halves along the vertical central axis. Each sand seal halves is provided with an ear plate, and the ear plates are provided with bolt holes. The ear plates on the two sand seal halves are connected by bolts to form the sand seal body. In the prior art, it is difficult to disassemble the sand seal as a whole, and a hydraulic rod is required to replace the insulating gasket. However, this application designs the sand seal as a split piece, which is easy to disassemble and facilitates later maintenance.

[0010] Furthermore, the base is equipped with a sand seal fixing clip that can strengthen the connection between the sand seal body and the yellow phosphorus electric furnace.

[0011] Furthermore, the sand seal body is divided into a cylindrical vertical section and a conical inclined section in the vertical direction. By utilizing the connection between the vertical section and the inclined section, the resulting sand seal cone has a small slope, large capacity, and better heat insulation and electrical insulation effects.

[0012] Furthermore, the inner wall of the sand seal body is provided with several clamping plates for pressing metal spring brushes.

[0013] Furthermore, the sand seal fixing clamp is equipped with an insulating plate. The sand seal flange is fixedly connected to the sand seal flange through the mica insulating plate by the fixing clamp, resulting in a better and safer fixing effect. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the connection structure between the sand seal half and the sand seal fixing clip of this utility model.

[0015] Figure 2 This is a schematic diagram of the structure of the sand seal half of this utility model.

[0016] Figure 3 This is a schematic diagram of the structure of the fixing clip of this utility model.

[0017] Figure 4 This is a schematic diagram of the metal spring brush connection structure of this utility model.

[0018] Figure 5 This is a top view of the metal spring brush connection structure of this utility model.

[0019] Figure 6 This is a schematic diagram of the structure of the metal spring brush of this utility model. Detailed Implementation

[0020] The following detailed description illustrates the specific implementation method:

[0021] The reference numerals in the accompanying drawings include: sand seal half 1, vertical part 11, inclined part 12, ear plate 2, connecting flange 3, insulating plate 4, clamping plate 5, metal spring brush 6, snap-fit ​​annular groove 61, sand seal fixing clamp 7, fixing rod 71, upper pressure plate 72, and lower pressure plate 73.

[0022] Implementation, for example, attached Figure 1-6 As shown: An electrode sealing device for a yellow phosphorus electric furnace includes a sand-sealing body. The interior of the sand-sealing body is a cavity that can be filled with multiple layers of sealing material. In use, sand-sealing materials such as coarse and fine quartz sand, activated carbon layers, and iron blocks can be added into the cavity for sealing. It is worth noting that the sand-sealing body in this application has a split structure, consisting of two sand-sealing halves 1 with completely identical structures. Therefore, the sand-sealing body is like being divided into two sand-sealing halves 1 with semicircular cross-sections along a vertical central axis.

[0023] Sand-sealed half-body 1 Figure 2 As shown, each side of the sand seal has ear plates 2 with several equidistant bolt holes, allowing the two sand seal halves 1 to be connected into a sand seal body using bolts. Since the upper part of the sand seal half 1 is a cylindrical vertical section 11 and the lower part is a conical inclined section 12, the overall shape of the assembled sand seal body is a cylinder in the upper part and a frustum in the lower part, both being uniformly thick hollow structures.

[0024] The lower end of the sand seal body is equipped with a base for connection to the yellow phosphorus electric furnace. The base has a two-layer structure. The connecting flange 3 is in direct contact with the lower end face of the sand seal body. The connecting flange 3 is hermetically welded to the lower end face of the inclined part 12 of the sand seal body. An insulating plate 4 is also adhered to the lower surface of the connecting flange 3. The insulating plate 4 may include, but is not limited to, mica plates. Since the size of the opening at the lower end of the base is the same as that of the electrode, when the electrode is inserted into the electric furnace through the sand seal body and the base, the circular opening formed by the insulating plate 4 will close with the electrode.

[0025] The inner wall of the sand seal body at the contact point with the base is provided with a snap-fit ​​annular groove 61, such as... Figure 4 As shown, a metal spring brush 6 is snapped into the snap-fit ​​annular groove 61. The metal spring brush 6 is formed by pressing together multiple metal wires bent into a spring structure. The shape of the metal wires is as follows: Figure 6 As shown, however, the metal spring brush 6, formed by pressing together multiple bent metal wires with a spring structure, is as follows: Figure 5 As shown, its structure consists of two semi-circular plates that can be combined into a ring. The snap-fit ​​annular groove 61 is also a semi-circular structure, with each sand seal half 1 having one half. Therefore, when the sand seal half 1 is combined into the sand seal body, the metal spring brush 6 and the snap-fit ​​annular groove 61 can form a complete ring. Since the metal spring brush 6 is formed by pressing bent metal wire into a spring structure, several clamping plates 5 are equidistantly arranged on the inner wall of the sand seal body to prevent deformation and displacement. The clamping plates 5 are fixed to the inner wall of the sand seal body with bolts. After installation, the clamping plates 5 restrict the metal wire of the metal spring brush 6, preventing it from expanding too loosely. The clamping plates compress it, ensuring it is tight.

[0026] The base is equipped with a sand seal fixing clip 7 to strengthen the connection between the sand seal body and the yellow phosphorus electric furnace. Figure 2 In the middle, its structure is not visible because it is obscured by ear plate 2. After hiding part of ear plate 2, as shown... Figure 1 As shown, it can be seen that it contacts the upper end face of the connecting flange 3 of the base. The overall structure of the sand seal fixing clamp 7 is arc-shaped, with two opposing support surfaces at the top and bottom. A lower pressure plate 73, which is integrated with the support surface of the sand seal fixing clamp 7, is provided on the lower support surface. A through threaded hole is provided on the upper support surface, and a fixing rod 71 is fitted into the threaded hole. An upper pressure plate 72, which is integrated with the fixing rod 71, is provided at the lower end of the fixing rod 71. The upper pressure plate 72 and the lower pressure plate 73 form an adjustable latch. The fixing rod 71 is a fully threaded clamping bolt, and a fixing nut is also provided at the upper end of the fixing rod 71 to limit its movement. Therefore, the distance of the vertical movement of the fixing rod 71 can be adjusted to control the size of the latch formed by the upper pressure plate 72 and the lower pressure plate 73. In use, adjust the fixing rod 71 so that the upper pressure plate 72 is at the upper end face of the connecting flange 3 and the lower pressure plate 73 is at the lower end face of the yellow phosphorus electric furnace electrode mounting port flange. After connecting the flange, use the sand seal fixing clamp 7 to strengthen the fixing of the flange. To ensure safety, insulating plates are also provided on the surfaces of the upper pressure plate 72 and the lower pressure plate 73.

[0027] The above descriptions are merely embodiments of this utility model, and common knowledge regarding specific structures and characteristics is not elaborated upon here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the structure of this utility model, and these should also be considered within the scope of protection of this utility model. These modifications will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application shall be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. An electrode sealing device for a yellow phosphorus electric furnace, comprising a sand-sealed body internally capable of being filled with multiple layers of sealing material, the lower end of the sand-sealed body being provided with a base connected to the electric furnace, characterized in that: The lower end of the sand seal body is provided with a metal spring brush that seals the sand seal material in the sand seal body. The metal spring brush is formed by pressing together multiple metal wires bent into a spring structure.

2. The electrode sealing device for a yellow phosphorus electric furnace according to claim 1, characterized in that: The sand seal body includes two sand seal halves with identical structures. Each sand seal halves is provided with an ear plate, and the ear plate is provided with bolt holes. The ear plates of the two sand seal halves are connected by bolts to form the sand seal body.

3. The electrode sealing device for a yellow phosphorus electric furnace according to claim 1 or 2, characterized in that: The base is equipped with a sand seal fixing clip that can strengthen the connection between the sand seal body and the yellow phosphorus electric furnace.

4. The electrode sealing device for a yellow phosphorus electric furnace according to claim 1 or 2, characterized in that: The sand seal body is divided into a cylindrical vertical section and a conical inclined section in the vertical direction.

5. The electrode sealing device for a yellow phosphorus electric furnace according to claim 1, characterized in that: The inner wall of the sand seal body is provided with several clamping plates for pressing metal spring brushes.

6. The electrode sealing device for a yellow phosphorus electric furnace according to claim 3, characterized in that: An insulating plate is provided on the sand seal fixing clamp.

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