Smelting furnace for producing basalt continuous fibers

Abstract

The utility model relates to a smelting furnace for producing basalt continuous fibers. The smelting furnace comprises a wire drawing bushing plate, a furnace body, a sleeve A, a sleeve B, a heating device, a heating electrode A and a heating electrode B, a through hole is formed in the furnace body top cover; a discharge hole is formed in the furnace body bottom cover; a feeding port is formed in the upper portion of the side wall of the furnace body, a mounting groove is formed in the lower portion of the side wall, and a through hole is formed below the bottom of an inner cavity of the furnace body. The furnace body is sleeved with the sleeve A, and a rectangular hole B is formed in a bottom plate of the sleeve A; the sleeve B is sleeved outside the sleeve A, a rectangular hole C is formed in a bottom plate of the sleeve B, and a wire drawing bushing plate is connected below the bottom plate of the sleeve B; the heating device penetrates through a through hole in the top cover of the furnace body and extends into the inner cavity of the furnace body; the heating electrode A is inserted into a mounting groove in the side wall of the furnace body, and the heating electrode B is arranged in the through hole in a penetrating manner. The wire drawing device has the beneficial effects that the wire drawing stability is good, raw materials can be always in a heating state, the structure is simple, and the mounting and the dismounting are convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of basalt fiber production, in particular to a furnace for producing basalt continuous fibers. Background Art

[0002] Basalt fiber is made of natural basalt, which is similar to glass fiber, but has better physical and mechanical properties than glass fiber. It is a new type of inorganic environmentally friendly green material. It is a continuous fiber formed by melting basalt stone at 1450℃ to 1500℃ and drawing it through a platinum-rhodium alloy drawing plate.

[0003] The production of basalt continuous fiber is a phased process: first, the cleaned basalt stone is melted at a temperature of 1500℃, and then the basalt in the molten state is discharged downward through the drawing holes on the drawing plate to produce continuous basalt fiber filaments.

[0004] Since basalt melt has the characteristics of slow heat transfer, large temperature gradient, easy crystallization, etc., and the existing furnace for producing basalt continuous fiber has a large inner cavity, the molten liquid formed after the basalt raw material is slowly melted has a relatively low liquid level and forms a horizontal flow in the furnace. Since basalt melt has the characteristics of slow heat transfer and easy crystallization, crystals are formed inside the molten liquid, which affects the quality of basalt fiber output; the existing furnace device is equipped with an integrated resistance heating device on the top of the furnace body, and its heating resistor is easily damaged during operation and is not easy to disassemble and repair.

[0005] In addition, since basalt melt has the characteristic of large temperature gradient, when basalt rock is melted into molten liquid in the existing furnace, the heat transfer of the molten liquid is relatively slow and the internal temperature gradient is large. The molten liquid far away from the heat source is likely to precipitate crystals, resulting in unstable quality of continuous fibers after being drawn through the wire drawing plate, thereby reducing the performance of basalt continuous fibers.

[0006] Therefore, based on the shortcomings of the existing furnaces as reported by customers, the inventors have made further improvements according to the proposed defects and deficiencies to overcome the above problems. Summary of the invention

[0007] The utility model aims to overcome the shortcomings of the prior art and provide a furnace for producing basalt continuous fibers which has a simple structure, is easy to install and disassemble, and has good wire drawing stability.

[0008] The purpose of the utility model is achieved through the following technical solutions: A furnace for producing basalt continuous fibers, including a wire drawing bushing, characterized in that it also includes a furnace body, a sleeve A, a sleeve B, a heating device, a heating electrode A, and a heating electrode B;

[0009] The top cover of the furnace body is provided with a through hole, and the bottom cover of the furnace body is provided with a discharge port; the upper part of the side wall of the furnace body is provided with a feed port, the lower part of the side wall is provided with a mounting groove, and a through hole is provided below the bottom of the inner cavity of the furnace body;

[0010] The sleeve A is sleeved outside the furnace body, and a rectangular hole B is provided on the bottom plate of the sleeve A;

[0011] The sleeve B is sleeved outside the sleeve A, a rectangular hole C is arranged on the bottom plate of the sleeve B, and a wire drawing plate is connected below the bottom plate of the sleeve B;

[0012] The heating device is inserted into the through hole on the top cover of the furnace body and extends into the inner cavity of the furnace body;

[0013] The heating electrode A is inserted into the installation groove of the side wall of the furnace body, and the heating electrode B is inserted into the through hole;

[0014] When the furnace is working, the basalt raw material enters the furnace body cavity through the feed port, and is heated by the heating device on the top cover to convert the raw material from a solid state to a molten liquid state, and then the basalt molten liquid is reheated by the heating electrodes A and B at the lower part of the side wall. The basalt molten liquid can fully contact the heat source to reduce crystallization, so that its wire drawing stability is good; after heating, it flows vertically through the rectangular hole B and the rectangular hole C from the discharge port of the furnace bottom cover, reducing the horizontal flow of the molten liquid inside the furnace body and reducing heat loss, and finally the fiber drawing is carried out through the wire drawing leak plate arranged under the sleeve B.

[0015] As a preferred technical solution of the present application, the heating device includes a plurality of U-shaped resistors, which are inserted into a plurality of mounting holes of the top cover through a plurality of matching mounting seats and extend into the inner cavity of the furnace body. The plurality of U-shaped resistors form independent heating modules on the top cover to form a heating device.

[0016] As a preferred technical solution of the present application, three mounting grooves are arranged at the lower part of the side wall of the furnace body, and the three mounting grooves are arranged at equal intervals on the same plane of the side wall of the furnace body. A heating electrode A is installed in the mounting groove. The heating block of the heating electrode A extends into the mounting groove and is flush with the inner wall of the furnace body, and its positive and negative electrode rods extend out of the sleeve B and are connected to the positive and negative poles of the power supply.

[0017] As a preferred technical solution of the present application, a through hole is also provided at the lower part of the side wall of the furnace body, and the through hole is arranged below the bottom position of the inner cavity of the furnace body. The heating electrode B is arranged through the through hole and passes through the furnace body, and its two end ends extend out of the sleeve B and are respectively connected to the positive and negative poles of the power supply.

[0018] As a preferred technical solution of the present application, the sleeve A is adaptively sleeved outside the furnace body, the bottom plate of the sleeve A is sealed, and a rectangular hole B is opened at the discharge port of the furnace body, and the size of the rectangular hole B is smaller than the discharge port.

[0019] As a preferred technical solution of the present application, the sleeve B is adaptively sleeved outside the sleeve A, and a rectangular hole C is provided on the bottom plate of the sleeve B. The rectangular hole C is arranged opposite to the discharge port and the rectangular hole B of the furnace body, and the size of the rectangular hole C is larger than that of the rectangular hole B.

[0020] As a preferred technical solution of the present application, a criss-cross-shaped long frame is provided at the bottom of the sleeve B, and when the sleeve B is sleeved outside the sleeve A, the long frame is against the bottom of the sleeve A to form a better heat dissipation structure, and the cavity formed by the sleeve A, sleeve B and the long frame makes the device easier to install and disassemble.

[0021] As the preferred technical solution of the present application, the wire drawing leakage plate includes a substrate and a wire drawing leakage hole. A plurality of wire drawing leakage holes arranged at equal intervals are arranged on the substrate. The four corners of the substrate are connected to the bottom plate of the sleeve B through a telescopic rod. The plurality of wire drawing leakage holes are arranged opposite to the rectangular hole C. The entire wire drawing leakage plate is arranged close to the bottom of the sleeve B to reduce heat loss during wire drawing.

[0022] As a preferred technical solution of the present application, a partition plate is also provided in the furnace body, which is located below the multiple heating resistors. The partition plate is provided with multiple through holes and a vertical motor push rod is provided to connect with the top cover. The motor push rod moves up and down, so that the partition plate can move up and down in the furnace body.

[0023] The utility model has the following advantages:

[0024] (1) Good wire drawing stability;

[0025] The inner cavity volume of the existing furnace for producing basalt continuous fibers is relatively large. Since the basalt molten liquid has the characteristics of slow heat transfer, large temperature gradient, and easy precipitation of crystals, the molten liquid formed after the basalt raw material is melted will have a relatively low liquid level and flow horizontally in the furnace cavity, which is likely to cause the molten liquid to crystallize inside it, thereby affecting the quality of subsequent wire drawing; at the same time, due to the characteristics of slow heat transfer and large internal temperature gradient of the basalt molten liquid, the molten liquid far away from the heat source in the furnace may crystallize, resulting in unstable wire drawing quality;

[0026] The furnace for producing basalt continuous fibers designed in this scheme is designed with two electric heating devices at the top and bottom of the furnace. Compared with the existing furnaces on the market, the dual heating devices designed in this scheme enable the basalt molten liquid to fully contact the heat source, thereby reducing the precipitation of crystals inside, and controlling the opening and closing of the heating resistor A and the heating resistor B to realize the control of the temperature of the molten liquid in the furnace body, so that the stability of wire drawing on the wire drawing leak plate is better; this scheme sets the wire drawing leak plate below the rectangular opening C for the final discharge, and connects it to the bottom plate of the sleeve B through screws. The wire drawing leak plate and the rectangular opening C are separated by a suitable distance through screws, so that the temperature of the molten liquid when it flows to the wire drawing leak plate is suitable for wire drawing; and this scheme sets the furnace body for placing basalt raw materials and heating to be relatively small, and the discharge port at the bottom of the furnace body to be relatively large, so as to reduce the instability of the wire drawing process caused by the horizontal flow of the molten liquid in the cavity;

[0027] (2) Simple structure, easy to install and disassemble;

[0028] The existing furnace device usually also has a heating resistor on the top of the furnace for electric heating, but it is usually an integrated electric heating device, which is not easy to install and disassemble; the heating device on the top of the furnace body of the present invention is a combination of multiple independent heating resistor modules. This modular design makes the furnace structure of the present invention simpler and convenient to install and disassemble. When one of the resistor modules is damaged, it can be more convenient to disassemble it for repair and replacement; at the same time, the present invention provides sleeves A and sleeves B to be sleeved outside the furnace body, so that the molten liquid can flow to the wire drawing leak plate through the relatively small rectangular holes B and rectangular holes C after passing through the large discharge port (discharge port> rectangular hole C> rectangular hole B), the structure is relatively simple and reduces heat loss; a long frame is provided at the bottom position where the sleeve B contacts the sleeve A, so that the sleeve A can be lifted up and disassembled, so that the entire furnace device is very easy to install and disassemble;

[0029] (3) When the amount of basalt raw material to be heated is small, the raw material placed in the furnace body is not easily heated by the heating device on the top cover. Therefore, the present invention further provides a partition plate structure in the furnace body. The partition plate is connected to the top cover through a motor push rod. When the motor push rod moves up and down, the partition plate also moves up and down in the furnace body to adjust the distance from the multiple heating U-shaped resistors so that the raw material can be heated. The partition plate 16 is provided with multiple through holes to allow the basalt raw material that is heated to a molten liquid to flow down through the through holes. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a schematic diagram of the structure of the utility model from a frontal perspective;

[0031] Figure 2 This is a schematic diagram of the structure of the utility model from an upward viewing angle;

[0032] Figure 3 This is a schematic diagram of the structure of the utility model when the wire drawing leak plate is installed from the side;

[0033] Figure 4 It is a schematic diagram of the structure of the utility model from a side cross-sectional perspective;

[0034] Figure 5 This is a schematic diagram of the structure of the utility model after the sleeve A and the furnace body are installed from a front view perspective;

[0035] Figure 6 This is a schematic diagram of the structure of the utility model when the sleeve A and the furnace body are installed and viewed from the bottom;

[0036] Figure 7 This is a structural schematic diagram of the furnace body of the utility model from a frontal perspective;

[0037] Figure 8 This is a structural schematic diagram of the furnace body of the utility model when viewed from above;

[0038] Fig. 9 This is a schematic diagram of the structure of the sleeve B of the utility model;

[0039] Fig.10 It is a schematic diagram of the structure of the utility model after the partition plate is installed in the furnace body, looking at the cross section from the front;

[0040] Fig.11 It is a schematic diagram of the structure of the utility model after the partition plate is installed in the furnace body in a side view;

[0041] In the figure: 1-furnace body, 2-sleeve A, 3-sleeve B, 4-U-shaped resistor, 5-heating electrode A, 6-heating electrode B, 7-drawing leak plate, 8-top cover, 9-discharge port, 10-rectangular hole B, 11-rectangular hole C, 12-mounting seat, 13-feed port, 14-temperature adjustment hole, 15-long frame, 16-partition plate, 17-motor push rod. DETAILED DESCRIPTION

[0042] The present invention is further described below in conjunction with the accompanying drawings, but the protection scope of the present invention is not limited to the following description.

[0043] It should be noted that the directions or positional relationships indicated by "left", "right", etc. are based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the inventive product is usually placed when in use, or are the directions or positional relationships commonly understood by those skilled in the art. Such terms are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0044] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions in the embodiments may be combined with each other.

[0045] (Example 1)

[0046] See also Figure 1 to Figure 4 , a furnace for producing basalt continuous fibers proposed in this embodiment includes a furnace body 1, a sleeve A2, a sleeve B3, a heating device, a heating electrode A5, a heating electrode B6, and a drawing leak plate 7;

[0047] Among them, see Figure 7 A feed port 13 is provided at the upper position of the side wall of the furnace body 1, and a plurality of mounting grooves are provided at the lower position of the side wall. The plurality of mounting grooves are circumferentially arranged along the same plane position on the side wall of the furnace body 1, and a through hole is provided below the bottom of the inner cavity of the furnace body; a plurality of through holes are provided on the top cover 8 of the furnace body 1, and a discharge port 9 is provided on the bottom cover of the furnace body 1;

[0048] Among them, see Figure 5 and Figure 6 The sleeve A2 is sleeved outside the furnace body 1, and a rectangular protrusion is provided on the bottom plate of the sleeve A2 facing the discharge port 9, and a rectangular hole B10 is opened on the protrusion, and the size of the rectangular hole B10 is smaller than the size of the discharge port 9;

[0049] Among them, see Figure 3 and Fig. 9 The sleeve B3 is sleeved outside the sleeve A2, and a rectangular hole C11 is provided on the bottom plate of the sleeve B3 opposite to the rectangular hole B10. The bottom of the sleeve B3 is connected to the wire drawing leakage plate 7, and a plurality of wire drawing leakage holes are evenly provided on the wire drawing leakage plate 7;

[0050] Among them, see Figure 4 The heating device includes a U-shaped resistor and a mounting seat. The heating device is arranged through multiple through holes on the top cover 8 of the furnace body 1 from top to bottom, and the U-shaped resistor extends into the inner cavity of the furnace body 1 for heating;

[0051] Among them, see Figure 4 and Figure 7 , a plurality of heating electrodes A5 are inserted into a plurality of mounting grooves on the side wall of the furnace body 1, and a heating electrode B6 is inserted through a through hole provided at the bottom of the inner cavity of the furnace body 1;

[0052] When installing the furnace device, first insert the heating device into the multiple through holes of the top cover 8 of the furnace body 1, then sleeve A2 and sleeve B3 are sequentially sleeved on the outside of the furnace body 1, and the holes set on the side walls of sleeve A2 and sleeve B3 are aligned with the installation grooves and through holes on the side walls of the furnace body 1, and the heating electrodes A5 and B6 penetrate the holes of the side walls of sleeve B3 and sleeve A2 and are installed on the furnace body 1;

[0053] When the furnace starts working, the basalt raw material is poured into the inner cavity of the furnace body 1 through the feed port 13 on the side wall, and the basalt raw material is converted from a solid state to a molten liquid state through the heating device on the top cover 8 of the furnace body 1, and then the basalt molten liquid is heated again by the heating electrodes A5 and B6 arranged at the lower part of the side wall of the furnace body 1. Since the heating electrodes A5 and B6 are switched on and off, the temperature can be adjusted. Since the molten liquid has the characteristics of slow heat transfer, large temperature gradient, and easy crystallization, the depth of the molten liquid in the furnace body 1 can be controlled by adjusting the temperature (when only one of the heating electrodes A5 is turned on, due to the slow heat transfer of the molten liquid, the part that is not heated in place will precipitate crystals and cannot flow down). After being heated by the heating electrodes, the molten liquid flows out from the discharge port 9 of the bottom cover, passes through the rectangular holes B10 and C11, and is drawn on the drawing plate 7 arranged below the sleeve B3;

[0054] This scheme designs a furnace for producing basalt continuous fibers, which mainly heats the loaded basalt raw materials by arranging a heating device at the position of the top cover 8, and then reheats the molten liquid by arranging a heating electrode at the lower position of the furnace body 1; the heating electrode A and the heating electrode B at the lower part of the furnace body are not in direct contact with the molten liquid, the heating electrode A is provided with a heating part inserted into the inner wall of the furnace body, and the through hole through which the heating electrode B is penetrated is located below the bottom of the inner cavity of the furnace body 1 - that is, the heating electrode B heats the molten liquid through the bottom of the inner cavity of the furnace body 1, thereby avoiding the heating electrode from being damaged by the molten liquid and reducing the use Lifespan; Compared with the furnaces for producing basalt continuous fibers on the market, the two heating devices designed in the upper and lower parts of the furnace in this solution allow the basalt melt to fully contact the heat source, thereby reducing the precipitation of crystals inside, so that the wire drawing on the wire drawing plate 7 is more stable; and the heating devices arranged on the top are multiple independent heating resistor modules. Compared with the existing furnace top cover 8 which only has a single heating device, the modular design makes the furnace structure of this solution simpler, convenient for installation and disassembly, and when one of the resistor modules is damaged, it can be more conveniently disassembled for repair;

[0055] At the same time, sleeves A2 and sleeves B3 are provided and sleeved outside the furnace body 1; compared with the existing furnaces for producing basalt continuous fibers on the market, such a device usually has insufficient heating concentration due to the excessively large volume inside the furnace, and the horizontal flow of the molten liquid causes the liquid level to be too low. When the molten liquid level is too low, the wire drawing process is not stable enough when the wire is drawn through the wire drawing leak plate 7; the volume of the inner cavity of the furnace body 1 of the present device is smaller, which can reduce the horizontal flow of the molten liquid inside the furnace body 1, and the basalt molten liquid can pass through the discharge port 9 below as much as possible and then vertically pass through the wire drawing leak plate 7 to draw fibers; and the discharge port 9 of the furnace body 1 is set to be relatively large, so that the molten liquid is discharged vertically, and the relatively small rectangular holes of the sleeves A2 and B3 can allow the molten liquid to flow to the wire drawing leak plate 7 in a concentrated manner for wire drawing, thereby reducing heat loss;

[0056] In this embodiment, refer to Figure 7 As for the design of the top cover 8, the top cover 8 is in the shape of a disc, and a large through hole is set in the center. The large through hole is used to install the sensor, and multiple small through holes are set around the large through hole. The shape of the multiple small through holes is a long waist hole, which is used to install the heating device; the heating device is a resistance heating, and multiple U-shaped resistors 4 are set to pass through multiple mounting seats 12 matched with them. The multiple mounting seats 12 are adapted to be installed with multiple small through holes. The heating part of the U-shaped resistor 4 is inserted into the furnace body 1, and its bottom end is exposed to the outside. The heating device is a combination of multiple heating resistor independent modules.

[0057] In this embodiment, refer to Figure 7 and Figure 8 As for the design of the furnace body 1, the furnace body 1 is cylindrical in shape, the top of the furnace body 1 is connected to the lower surface of the top cover 8, a feed port 13 is arranged on the upper part of the side wall of the furnace body 1, the feed port 13 is a round hole shape, and the basalt raw material enters the inner cavity of the furnace body 1 from the feed port 13, and a temperature adjustment hole 14 is also arranged on the side wall of the furnace body 1, the temperature adjustment hole 14 is located below the feed port 13, and is adapted to be installed with a thermocouple temperature measuring device; three installation grooves are also arranged on the lower part of the side wall of the furnace body 1, the installation grooves are long rectangular, and the installation grooves are arranged at equal intervals. On the same plane of the side wall of the furnace body 1, a heating electrode A5 is adapted to be installed in the installation groove, and each installation groove can be inserted with two heating electrodes A5 - that is, six heating electrodes A5 are arranged circumferentially on the side wall of the furnace body 1 at equal intervals; two through holes are also arranged on the side wall of the furnace body 1, and the two through holes are located below the bottom position of the inner cavity of the furnace body; the heating electrode B6 is two round rod-shaped electrodes, which pass through the furnace body 1 through the through holes; a discharge port 9 is arranged on the bottom cover of the furnace body 1, and the molten liquid flows out through the discharge port 9.

[0058] Furthermore, an observation window is provided at the upper position of the side wall of the furnace body 1, and the observation window is a rectangular window; the situation inside the furnace body 1 can be directly observed through the observation window, and it is also convenient to insert tools to clean the debris on the surface of the molten liquid formed by the basalt.

[0059] In this embodiment, refer to Figure 5 and Figure 6 The sleeve A2 is in the shape of a cylindrical tube. The diameter of the sleeve A2 is larger than the diameter of the furnace body 1 and can be adaptively sleeved outside the furnace body 1. The thickness of the sleeve A2 is larger than the furnace body 1 and the sleeve B3, which plays a role in heat insulation. A hole is also opened on the side wall of the sleeve A2 at a position opposite to the heating electrode A5 and the heating electrode B6. The tail ends of the heating electrode A5 and the heating electrode B6 can be perforated. The bottom plate of the sleeve A2 is sealed to block the discharge port 9 of the bottom cover of the furnace body 1. A rectangular protrusion is arranged outward at the center of the bottom plate of the sleeve A2, and a rectangular hole B10 is opened on the rectangular protrusion. The rectangular hole B10 is arranged opposite to the discharge port 9, and the size of the rectangular hole B10 is smaller than the discharge port 9.

[0060] In this embodiment, refer to Figure 1 to Figure 4 The sleeve B3 is also in the shape of a cylindrical tube. The sleeve B3 can be adaptively mounted outside the sleeve A2. A hole opposite to the heating electrode A5 and the heating electrode B6 is provided on the side wall of the sleeve B3. The tail ends of the heating electrode B6 and the heating electrode A5 pass through the hole on the side wall of the sleeve B3 and extend out of the device to be connected to the power supply. A rectangular hole C11 is provided at the bottom of the sleeve B3. The rectangular hole C11 is opened opposite to the discharge port 9 and the rectangular hole B10. The size of the rectangular hole C11 is smaller than the discharge port 9, but larger than the rectangular hole B10.

[0061] For further information, see Fig. 9 Four long frames 15 are arranged at the bottom of the sleeve B3, and the four long frames 15 are arranged in a criss-cross shape at the bottom of the sleeve B3. When the sleeve B3 is sleeved outside the sleeve A2, the bottom of the sleeve A2 is against the long frames 15, which can better insulate. In addition, by utilizing the cavity formed by the sleeve A2, the sleeve B3 and the long frames 15, the sleeve A can be removed by lifting it upwards, making the entire furnace device simpler and convenient for installation and disassembly.

[0062] In this solution, sleeves A2 and sleeves B3 are arranged outside the furnace body 1, and a rectangular hole B10 smaller than the rectangular hole A on the bottom cover of the furnace body 1 is arranged at the bottom of the sleeve A2, so that the heated molten liquid can flow downward more concentratedly until the outlet is used for fiber drawing; sleeve B3 is then sleeved outside the sleeve A2, and the size of the rectangular hole C11 arranged at the bottom of the sleeve B3 is smaller than the discharge port 9 and larger than the rectangular hole B10, so that the concentrated molten liquid can flow downward more fully and quickly; through such a very simple structure, the horizontal flow of the molten liquid in the furnace body 1 is reduced, the height of the molten liquid in the furnace body 1 is increased, the whole production process is more stable, and the volume of the furnace is greatly reduced. Compared with the furnaces for producing basalt continuous fibers on the market, the design of this solution is simpler and easier to install, and can reduce the investment in equipment manufacturing.

[0063] In this embodiment, refer to Figure 7 and Figure 8 As for the heating electrode A5, the heating electrode A5 includes an electrode rod, a mounting block and a heating block. The electrode rod is divided into a positive electrode rod and a negative electrode rod. The mounting block is a rectangular block, and its front end surface is connected to the heating block. Two circular holes are arranged on the mounting block. The positive electrode rod and the negative electrode rod are respectively inserted into the two circular holes on the mounting block, and then extend into the interior of the heating block; when the heating electrode A5 is installed, the heating block is inserted into the mounting groove on the side wall of the furnace body 1, but does not penetrate into the cavity of the furnace body 1. The end face of the heating block that penetrates into the mounting groove is flush with the inner wall of the furnace body 1 to heat the molten liquid; the positive electrode rod and the negative electrode rod extending out of the sleeve B3 are respectively connected to the positive and negative poles of the power supply, so as to perform electric heating.

[0064] In this embodiment, refer to Figure 7 and Figure 8 As for the heating electrode B6, the heating electrode B6 is in the shape of a round rod. The two heating electrodes B6 pass through the entire furnace device horizontally through two through holes. The part of the round rod in the furnace body is arranged at the bottom of the inner cavity of the furnace body to prevent the heating electrode B from being damaged due to contact with the molten liquid. The ends of the heating electrode B6 extend out of the sleeve B3 and are respectively connected to the positive and negative poles of the power supply, so as to perform electric heating.

[0065] In this embodiment, refer to Figure 3 and Figure 4 , as for the wire drawing leakage plate 7, the wire drawing leakage plate 7 includes a substrate and a wire drawing leakage hole. The substrate is a long rectangle, and holes are opened at the four corners of the substrate, which is connected to the bottom of the sleeve B3. A plurality of wire drawing leakage holes are arranged at equal intervals and are arranged opposite to the rectangular hole C11 at the bottom of the sleeve B3; the short sides of both ends of the substrate are cut inward to both sides of the plurality of wire drawing leakage holes arranged at equal intervals, so that a downward slope is formed on the upper surface of the substrate, so that the rectangular opening C11 is separated from the wire drawing leakage plate by a certain distance;

[0066] For further information, see Figure 3 The four corners of the substrate are set as telescopic rod structures connected to the bottom of the sleeve B3, so that the distance between the entire drawing leak plate 7 and the rectangular hole C11 can be adjusted, which can reduce heat loss during the fiber drawing process and make the molten liquid flow to the drawing leak plate 7 at a suitable temperature for easy drawing.

[0067] (Example 2)

[0068] See also Fig.10 On the basis of Example 1, a further structural design is carried out, which further includes a partition plate 16, which is in the shape of a disc and has a plurality of through holes; the partition plate 16 is arranged inside the furnace body 1, and a motor push rod 17 connected to the top cover 8 is arranged vertically upward on the round edges on the left and right sides of the upper surface of the partition plate; when the basalt raw material added to the furnace body is relatively small, the heating device arranged on the top cover may not be able to heat the raw material. In this scheme, a motor push rod and a partition plate 16 are arranged, and the motor push rod 17 moves up and down, and the partition plate 16 also moves up and down in the furnace body 1 to adjust the distance so that the raw material is heated, and a plurality of through holes are arranged on the partition plate 16, and the raw material heated into a molten liquid flows down through the through holes;

[0069] See also Fig.11 The partition plate 16 is also provided with a plurality of long waist-shaped holes, and when the partition plate moves upward, the U-shaped resistor 4 on the upper part of the furnace body 1 can pass through, so that the partition plate 16 moves upward a greater distance.

[0070] Furthermore, the push rod part extending into the furnace body is made of ceramic material, which has good high temperature resistance and can work at a high temperature of 1500°C in the furnace body. The ceramic material has very low thermal conductivity and will not transfer heat to cause damage to the motor push rod. The ceramic material also has good wear resistance and a relatively long service life.

[0071] It should be noted that the motor push rod 17 is a prior art, which is based on converting the rotational motion of the motor into the linear motion of the push rod. When the motor is started, the motor rod rotates, and the gear meshing with it rotates, thereby driving the lead screw nut structure to convert the motor rotation into the linear motion of the push rod; through the forward and reverse rotation of the motor, the push rod can move up and down, so that the partition plate 16 connected to the motor push rod 17 moves up and down to adjust the distance from the heating device.

[0072] The invention is a furnace for producing basalt continuous fibers. The electric heating devices are respectively designed at the top and bottom of the furnace. A resistance heating device is arranged at the top, and an electrode heating device is arranged at the bottom. The resistance heating is heated by the heat generated by the current flowing through the resistor, while the electrode heating is heated by the arc generated by the current flow. This dual heating method can heat the basalt raw material more fully. The electrode heating device at the bottom of the furnace body is not in direct contact with the molten liquid. The heating electrode A is provided with a heating part inserted into the inner wall of the furnace body. The through hole through which the heating electrode B passes is located in the furnace body 1. The bottom of the cavity, that is, the heating electrode B is separated from the bottom of the inner cavity of the furnace body 1 to heat the molten liquid, so as to avoid the heating electrode being damaged by the molten liquid and reducing the service life; compared with the furnaces on the market, the dual heating device designed in the furnace of this scheme enables the basalt molten liquid to fully contact the heat source, thereby reducing the internal precipitation of crystals, so that the wire drawing on the wire drawing leak plate 7 has better stability; and the heating device arranged on the top is a plurality of independent heating resistor modules, compared with the existing furnace device that has an integrated heating device arranged on the top of the furnace body, the heating resistor is easily damaged during operation and is not convenient to be disassembled for repair;

[0073] In addition, the furnace structure of the present invention is provided with a sleeve A2 and a sleeve B3 outside the furnace body 1 for heating. The structural design of the sleeve A2 and the sleeve B3 is different from the furnace structure on the market, which causes the molten liquid to flow horizontally in the inner cavity of the furnace body 1 due to its excessive volume, resulting in an unstable wire drawing process. At the same time, by utilizing the cavity formed by the sleeve A, the sleeve B and the long frame 15, the sleeve A can be lifted up and disassembled, making the entire furnace device more convenient to install and disassemble; the inner cavity of the furnace body 1 provided in the present invention is relatively small, and the discharge port 9 of the bottom cover is relatively large, so that the molten liquid can pass through the discharge port 9 vertically, and then pass through the rectangular hole of the sleeve to the wire drawing leak plate 7 for wire drawing, thereby reducing the horizontal flow of the molten liquid inside the furnace body 1, making the fiber wire drawing more stable, and reducing heat loss;

[0074] In this scheme, heating electrodes A5 and heating electrodes B6 are arranged at the lower part of the furnace body 1, and each heating electrode can be turned on or off separately. By regulating whether the heating electrode is heated, the temperature of the molten liquid in the furnace body 1 is controlled. When only the heating electrode B6 is turned on, the molten liquid in the upper layer is not heated by the heating electrode, so the molten liquid flowing to the wire drawing leak plate 7 is relatively slow. At this time, the molten liquid level in the furnace body 1 is relatively high. When the heating electrode A5 is turned on again, the molten liquid has a larger heating range, so the molten liquid flowing to the wire drawing leak plate 7 and drawing is faster. At this time, the liquid level of the molten liquid in the furnace body 1 becomes lower. The depth of the molten liquid in the furnace body 1 is adjusted by setting a multi-layer heating method, which is relatively simple and easy to operate.

[0075] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A furnace for producing basalt continuous fibers, comprising a drawing bushing (7), characterized in that: It also includes a furnace body (1), a sleeve A (2), a sleeve B (3), a heating device, a heating electrode A (5), and a heating electrode B (6); A through hole is provided on the top cover (8) of the furnace body (1), and a discharge port (9) is provided on the bottom cover of the furnace body (1); a feed port (13) is provided on the upper part of the side wall of the furnace body (1), a mounting groove is provided on the lower part of the side wall, and a through hole is provided below the bottom of the inner cavity of the furnace body (1); The sleeve A (2) is sleeved outside the furnace body (1), and a rectangular hole B (10) is provided on the bottom plate of the sleeve A (2); The sleeve B (3) is sleeved outside the sleeve A (2), a rectangular hole C (11) is arranged on the bottom plate of the sleeve B (3), and a wire drawing plate (7) is connected below the bottom plate of the sleeve B (3); The heating device is inserted into a mounting hole on a top cover (8) of the furnace body (1) and extends into the inner cavity of the furnace body (1); The heating electrode A (5) is inserted into the mounting groove of the side wall of the furnace body (1), and the heating electrode B (6) is inserted into the through hole; When the furnace is working, basalt raw materials enter the inner cavity of the furnace body (1) through the feed port (13), are heated by the heating device on the top cover (8) to convert the raw materials from a solid state into a molten liquid, and then are reheated by the heating electrode A (5) and the heating electrode B (6) at the lower part of the side wall. The basalt molten liquid can fully contact the heat source, thereby reducing crystallization and improving the stability of wire drawing. After heating, the basalt raw materials flow vertically from the discharge port (9) of the bottom cover of the furnace body (1) through the rectangular hole B (10) and the rectangular hole C (11), thereby reducing the horizontal flow of the molten liquid inside the furnace body (1) and reducing heat loss. Finally, fiber drawing is carried out through the wire drawing leak plate (7) arranged below the sleeve B (3).

2. A furnace for producing basalt continuous fibers according to claim 1, characterized in that: The heating device comprises a plurality of U-shaped resistors (4), which are inserted into a plurality of mounting holes of a top cover (8) through a plurality of matching mounting seats (12) and extend into the inner cavity of a furnace body (1). The plurality of U-shaped resistors (4) form an independent heating module on the top cover (8) to form the heating device.

3. A furnace for producing basalt continuous fibers according to claim 1, characterized in that: Three mounting grooves are arranged at the lower part of the side wall of the furnace body (1). The three mounting grooves are arranged at equal intervals on the same plane of the side wall of the furnace body (1). A heating electrode A (5) is installed in the mounting groove. The heating block of the heating electrode A (5) extends into the mounting groove and is flush with the inner wall of the furnace body (1). The positive and negative electrode rods extend out of the sleeve B (3) and are connected to the positive and negative electrodes of the power supply.

4. A furnace for producing basalt continuous fibers according to claim 3, characterized in that: The lower part of the side wall of the furnace body (1) is also provided with a through hole, which is arranged below the bottom of the inner cavity of the furnace body (1). The heating electrode B (6) is arranged through the through hole and passes through the furnace body (1). Its two ends extend out of the sleeve B (3) and are respectively connected to the positive and negative electrodes of the power supply.

5. A furnace for producing basalt continuous fibers according to claim 1, characterized in that: The sleeve A (2) is adaptively sleeved outside the furnace body (1), the bottom plate of the sleeve A (2) is sealed, and a rectangular hole B (10) is opened at the position of the discharge port (9) of the furnace body (1), and the size of the rectangular hole B (10) is smaller than the discharge port (9).

6. A furnace for producing basalt continuous fibers according to claim 1, characterized in that: The sleeve B (3) is adaptively sleeved outside the sleeve A (2), and a rectangular hole C (11) is provided on the bottom plate of the sleeve B (3). The rectangular hole C (11) is arranged opposite to the discharge port (9) of the furnace body (1) and the rectangular hole B (10), and the size of the rectangular hole C (11) is larger than the rectangular hole B (10).

7. A furnace for producing basalt continuous fibers according to claim 6, characterized in that: A long frame (15) in the shape of a cross is provided at the bottom of the sleeve B (3), and when the sleeve B (3) is sleeved outside the sleeve A (2), the long frame (15) abuts against the bottom of the sleeve A (2), forming a better heat dissipation structure, and the cavity formed by the sleeve A (2), the sleeve B (3) and the long frame (15) makes the device more convenient to install and disassemble.

8. A furnace for producing basalt continuous fibers according to claim 1, characterized in that: The wire drawing leakage plate (7) comprises a base plate and wire drawing leakage holes. A plurality of wire drawing leakage holes are arranged at equal intervals on the base plate. The four corners of the base plate are connected to the bottom plate of the sleeve B (3) through telescopic rods. The plurality of wire drawing leakage holes are arranged opposite to the rectangular hole C (11). The entire wire drawing leakage plate (7) is arranged close to the bottom of the sleeve B (3) to reduce heat loss during wire drawing.

9. A furnace for producing basalt continuous fibers according to claim 1, characterized in that: A partition plate (16) is also provided in the furnace body (1), and the partition plate (16) is located below the plurality of heating resistors. The partition plate (16) is provided with a plurality of through holes, and a motor push rod (17) is vertically provided and connected to the top cover (8). The partition plate (16) can move up and down in the furnace body (1) through the up and down movement of the motor push rod (17).

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