Smelting furnace for basalt fiber production

Abstract

The invention provides a smelting furnace for basalt fiber production, and relates to the technical field of basalt fibers. A base is arranged above the furnace body, a plurality of material injection devices are arranged on the base and comprise material injection barrels, material injection openings are formed in the material injection barrels, material pushing plates are arranged in the material injection barrels in a sliding mode, push rods are arranged in the material injection barrels in a sliding mode, sealing discs are arranged at the bottoms of the material injection barrels and connected with the push rods, feeding devices are arranged above the base and comprise material boxes, and fixed blocks are arranged in the material boxes. The sliding block is arranged in the material box in a sliding mode and located above the fixed block, the shapes of the material pushing plate and the sealing disc are matched with the inner wall of the material injection barrel, the material injection barrel is provided with a first driving assembly and a second driving assembly which drive the material pushing plate and the push rod to ascend and descend in the material injection barrel respectively, and the side walls, close to each other, of the fixed block and the sliding block are matched inclined faces. And a blanking pipe and a conveying pipe are respectively arranged above the higher ends and below the lower ends of the inclined surfaces of the fixed block and the sliding block. Stone is added into the molten pool, and the situation that the falling speed of the stone on the surface of the molten pool is low, and stone melting is affected is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of basalt fibers, and in particular to a furnace for producing basalt fibers. Background Art

[0002] Basalt fiber is a continuous fiber drawn from natural basalt. It is a continuous fiber drawn at high speed through a platinum-rhodium alloy wire drawing plate after the basalt material is melted at 1450℃~1500℃. The color of pure natural basalt fiber is generally brown. Basalt fiber is a new type of inorganic environmentally friendly green high-performance fiber material. It is composed of oxides such as silicon dioxide, aluminum oxide, calcium oxide, magnesium oxide, iron oxide and titanium dioxide. Basalt continuous fiber not only has high strength, but also has many excellent properties such as electrical insulation, corrosion resistance, and high temperature resistance.

[0003] In the prior art, basalt stone is melted in an electric furnace. At present, during the feeding process of basalt stone, the basalt stone falls into the molten pool in the electric furnace. Due to the surface tension of the molten pool, the high density of the melt in the molten pool and the poor fluidity of the molten pool surface, the added basalt stone falls slowly on the surface of the molten pool, which reduces the heating efficiency of the basalt stone. In addition, the surface temperature of the molten pool is the lowest. The longer the basalt stone stays on the surface of the molten pool, the more unfavorable it is for the stone to melt. Summary of the invention

[0004] The purpose of the present invention is to develop a furnace for producing basalt fiber, which can add stones into a molten pool to avoid the slow falling speed of the stones on the surface of the molten pool and affect the melting of the stones.

[0005] The present invention is achieved through the following technical solutions:

[0006] A furnace for producing basalt fiber, comprising:

[0007] Furnace body;

[0008] A base, which is arranged above the furnace body and connected to the three-way moving device;

[0009] A plurality of injection devices are arranged on the base, including:

[0010] Injection barrel;

[0011] The injection port is arranged on the side wall of the injection barrel;

[0012] A push plate is slidably arranged in the injection barrel;

[0013] A push rod is slidably arranged in the injection barrel;

[0014] A sealing plate is arranged at the bottom of the injection barrel and connected to the push rod;

[0015] The feeding device is arranged above the base and comprises:

[0016] Material box;

[0017] A fixed block is arranged in the material box;

[0018] A sliding block is slidably arranged in the material box and is located obliquely above the fixed block;

[0019] A hydraulic cylinder is arranged in the material box and drives the slide block to slide away from or towards the fixed block;

[0020] The shapes of the push plate and the sealing disk are adapted to the inner wall of the injection barrel, a through hole adapted to the push rod is provided at the center of the push plate, the push rod is coaxially slidably connected with the push plate, and the injection barrel is provided with a first driving assembly and a second driving assembly for respectively driving the push plate and the push rod to rise and fall in the injection barrel;

[0021] The side walls of the fixed block and the sliding block that are close to each other are matched inclined surfaces. A material discharge pipe is provided on the material box above the higher end of the inclined surfaces of the fixed block and the sliding block, and a material delivery pipe is provided on the material box below the lower end of the inclined surfaces of the fixed block and the sliding block. The material delivery pipe is connected to the injection port.

[0022] Optionally, the fixed block and the sliding block are both in the shape of a right-angled trapezoid and their inclined surfaces are arranged opposite to each other, the inclined directions of the fixed block and the inclined surfaces of the sliding block are the same, and a soft sealing layer is provided between the bottom end of the feed tube and the end of the sliding block;

[0023] A hopper is provided at the bottom of the lower end of the inclined surface of the fixed block. The hopper is in the shape of a truncated cone with a small diameter end facing downward, and the feed pipe is connected with the bottom of the hopper.

[0024] Optionally, the inclination angle of the fixed block inclined surface is smaller than the inclination angle of the sliding block inclined surface.

[0025] Optionally, a plurality of pyramid-shaped crushing teeth are provided on the inclined surfaces of the fixed block and the sliding block, and the crushing teeth gradually become smaller and the arrangement density gradually increases in the direction from the higher end to the lower end of the inclined surface.

[0026] Optionally, a driving device is provided on the base, and the driving device includes an annular slide groove opened on the base, the slide groove penetrates the base in the vertical direction, the upper part of the injection barrel passes through the slide groove, and the top and bottom of the slide groove are rotatably provided with annular sealing blocks with a shape matching the slide groove, and the outer wall of the injection barrel passes through the two sealing blocks and is rotatably connected to the sealing blocks.

[0027] Optionally, a gear is coaxially connected to the outer wall of the injection barrel in the slide groove, an outer ring gear is rotatably provided on the outer wall of the slide groove, an inner ring gear is provided on the inner wall of the slide groove, the gear is meshed with the outer ring gear and the inner ring gear, a support seat is provided at the edge of the base, and a motor for driving the outer ring gear to rotate is provided on the support seat.

[0028] Optionally, a material sleeve is provided on the outer side of the injection port, the material sleeve is annular and rotatably arranged on the outer wall of the injection barrel, a gap is provided between the inside of the material sleeve and the injection barrel to form a cavity, and the material sleeve is rotatably sealed and connected to the injection barrel;

[0029] A main material pipe is provided on the base at the inner center of the slide groove, and the main material pipe is connected to the material delivery pipe. A distribution pipe is rotatably connected to the bottom of the base and is coaxially rotatably and sealed with the main material pipe. Four inclined branch pipes are provided on the distribution pipe, and the lower end of the branch pipe is connected to the material sleeve.

[0030] Optionally, a material groove arranged in a spiral track is provided on the outer wall of the injection barrel, and the cross section of the material groove is an inwardly concave arc;

[0031] The upper part of the sealing disk is in the shape of a truncated cone with a small diameter end facing upwards and the side surface is in the shape of an inwardly concave arc surface;

[0032] A material gate is slidably provided in the injection port, and the shape of the material gate is adapted to the shape of the inner wall of the injection barrel. A gate groove for accommodating the material gate is provided in the injection barrel above the injection port, and a slot is provided in the injection barrel at the top of the gate groove. A spring telescopic rod connected to the material gate is vertically provided in the slot, and a push block is provided on the inner wall of the material gate near the bottom end, and the push block is on the sliding track of the push plate.

[0033] Optionally, the first driving assembly includes a cylindrical elastic airbag, the top of the elastic airbag is connected to the top of the injection barrel, the bottom of the elastic airbag is connected to the push plate, a spring is arranged in the elastic airbag, the top and bottom of the spring are respectively connected to the top of the injection barrel and the push plate, an air pipe is arranged at the top of the injection barrel, and an air control pipe is rotatably sealed on the air pipe;

[0034] A circular gas manifold is provided on the base on the outer side of the bottom of the main material pipe. The gas manifold and the main material pipe are in a coaxial state. A circular gas ring is rotatably connected to the outer wall of the gas manifold. The gas ring and the gas manifold are rotatably sealed. The gas control pipe is connected to the gas ring and communicated with the gas manifold. The gas manifold is provided with a pipeline connected to the gas source control system.

[0035] Optionally, the second driving assembly includes a support rod connected to the top of the push rod, the support rod is located above the injection barrel, and both ends of the support rod are connected to vertically arranged guide rods, the guide rods are slidably connected to the top of the injection barrel, the part of the push rod that slides through the top of the injection barrel is provided with an external thread, and the top of the injection barrel is rotatably provided with a drive ring that is sleeved on the outside of the push rod, and the inner wall of the drive ring is provided with an internal thread that cooperates with the external thread of the push rod, and the top of the injection barrel is provided with a drive device that is transmission-connected to the drive ring.

[0036] The beneficial effects of the present invention are:

[0037] The present invention can feed the crushed stone into the injection device. During the crushing process, the stone passes through a gradually shrinking and squeezed channel. The crushing teeth on the channel gradually shrink and the arrangement density gradually increases, so that the stone is graded and crushed, so that the particle size of the crushed stone is uniform. The material discharge can be controlled by controlling the slider. When the slider approaches the fixed block and is temporarily fixed, the channel shrinks and the material in the channel is squeezed and crushed. When the slider is not far from the fixed block, the material in the channel stops moving, so that the material discharge is stopped. When the material discharge is resumed, the slider can reciprocate and slide again, so that the material discharge can be controlled without manual operation or without the participation of the material valve.

[0038] After the crushed stone fills the injection barrel, multiple injection devices are inserted into the molten pool of the furnace body, and the insertion depth is controllable. During injection, the motor drives multiple injection barrels to move in a circle and rotate. The injection barrel realizes stirring of the molten pool, provides fluidity of the melt in the upper part of the molten pool, and makes the temperature of the injection area uniform. The outer wall of the injection barrel has a spiral material groove, which can lift the melt during the rotation of the injection barrel, so that the melt in the lower area of ​​the molten pool has a certain fluidity upward, increases the temperature of the molten pool surface, and further makes the temperature in the discharge area above the molten pool uniform. In the process of injecting materials into the molten pool, the injection barrel moves in a circle, and the movement area of ​​the injection barrel and the height of the bottom discharge can be controlled by a three-way moving device, so that the material is evenly dispersed in the molten pool, avoiding the discharge of materials in a local area of ​​the molten pool, resulting in low heating efficiency of the material. The material is evenly dispersed in the molten pool to increase the contact area between the material and the melt, thereby improving the melting efficiency of the material. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0040] Figure 1 It is a structural diagram of the present invention;

[0041] Figure 2 It is the structural diagram of the injection device;

[0042] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0043] Figure 4 This is the structural diagram of the feeding device.

[0044] 1. The hopper is provided with a plurality of guide rails, each of which is provided with a plurality of guide rails, each of which is provided with a plurality of guide rails. The guide rails are provided with a plurality of guide rails, each of which is provided with a plurality of guide rails. The guide rails are provided with a plurality of guide rails, each of which is provided with a plurality of guide rails. The guide rails are provided with a plurality of guide rails, each of which is provided with a plurality of guide rails. DETAILED DESCRIPTION

[0045] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0046] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and 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 orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.

[0047] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0048] like Figures 1 to 4 As shown, the present invention discloses a furnace for producing basalt fiber, including a furnace body 1, wherein electrodes are arranged inside the furnace body 1, a base 3 is arranged above the furnace body 1, four injection devices are arranged on the base 3, and a driving device for driving the four injection devices to move in a circle and rotate is arranged on the base 3.

[0049] The injection device includes a cylindrical injection barrel 2, which is open at the bottom and closed at the top. A circular push plate 15 with a shape matching the inner wall thereof is slidably arranged in the injection barrel 2. A push rod 13 is arranged in the injection barrel 2, and the push rod 13 is coaxial with the injection barrel 2. A through hole matching the push rod 13 is arranged at the center of the push plate 15. The push rod 13 is coaxially slidably connected with the push plate 15, and the top end of the push rod 13 slides through the top of the injection barrel 2. A circular sealing disk 8 is coaxially arranged at the bottom end of the push rod 13, and the sealing disk 8 matches the inner wall of the injection barrel 2. The upper part of the sealing disk 8 is in the shape of a truncated cone with the small diameter end facing upward, and the side surface is an inwardly concave arc surface.

[0050] The injection barrel 2 is provided with a first driving assembly and a second driving assembly which respectively drive the push plate 15 and the push rod 13 to rise and fall in the injection barrel 2. The first driving assembly drives the push plate 15 to slide down in the injection barrel 2 to push out the material in the injection barrel 2. The second driving assembly drives the push rod 13 to slide down to make the sealing plate 8 slide down. After the sealing plate 8 slides out of the bottom of the injection barrel 2, the material can be output from the bottom of the injection barrel 2. The second driving assembly drives the push rod 13 to slide up to make the sealing plate 8 slide up. The sliding of the sealing plate 8 can block the bottom of the injection barrel 2.

[0051] The first driving assembly includes a cylindrical elastic airbag 22, the top of the elastic airbag 22 is connected to the top of the injection barrel 2, the bottom of the elastic airbag 22 is connected to the push plate 15, and a spring 23 is arranged inside the elastic airbag 22, and the top and bottom of the spring 23 are also respectively connected to the top of the injection barrel 2 and the push plate 15. An air pipe 20 is arranged at the top of the injection barrel 2, and the air pipe 20 is connected to the elastic airbag 22. The air source injects gas into the elastic airbag 22 through the air pipe 20 to expand it. The expansion of the elastic airbag 22 pushes the push plate 15 to slide in the direction away from the top of the injection barrel 2. At this time, the spring 23 extends, and the gas in the elastic airbag 22 is drawn away through the air pipe 20. The internal air pressure of the elastic airbag 22 is reduced to present a negative pressure, the elastic airbag 22 contracts, and the spring 23 contracts to reset, and the elastic airbag 22 and the spring 23 drive the push plate 15 to slide upward.

[0052] The second driving assembly includes a support rod 18 connected to the top of the push rod 13. The support rod 18 is located above the injection barrel 2. The support rod 18 is horizontally arranged. The two ends of the support rod 18 are connected to vertically arranged guide rods 19. The guide rod 19 is slidably connected to the top of the injection barrel 2. The sliding range of the guide rod 19 is inside the elastic airbag 22. The part of the push rod 13 that slides through the top of the injection barrel 2 is provided with an external thread. The top of the injection barrel 2 is rotatably provided with a drive ring 21 sleeved on the outside of the push rod 13. The inner wall of the drive ring 21 is provided with an internal thread that matches the external thread of the push rod 13. The drive ring 21 is threadedly matched with the push rod 13. The drive ring 21 rotates and matches with the push rod 13 to realize the driving of the push rod 13. The sliding connection between the guide rod 19 and the injection barrel 2 is used as a lifting guide for the push rod 13. The top of the injection barrel 2 is provided with a driving device that is transmission-connected to the drive ring 21. The driving device can be a motor or a hollow rotating platform.

[0053] A plurality of injection ports 14 are arranged on the upper outer wall of the injection barrel 2, and the plurality of injection ports 14 are arranged in a circular manner with equal spacing around the axial direction of the injection barrel 2. A material sleeve 4 is sleeved outside the injection ports 14, and the material sleeve 4 is annular and rotatably arranged on the outer wall of the injection barrel 2. There is a gap between the inside of the material sleeve 4 and the injection barrel 2 to form a cavity, and the material sleeve 4 is rotatably sealed and connected to the injection barrel 2.

[0054] A material gate 17 is provided in the injection port 14 for sliding. The shape of the material gate 17 matches the shape of the inner wall of the injection barrel 2. A gate slot for accommodating the material gate 17 is provided in the injection barrel 2 above the injection port 14. The material gate 17 slides in the gate slot. The material gate 17 descends in the gate slot to block the injection port 14. The material gate 17 slides up and slides into the gate slot to open the injection port 14. A slot is provided in the injection barrel 2 at the top of the gate slot. A spring telescopic rod 29 is vertically provided in the slot. The elastic force of the spring telescopic rod 29 pushes the material gate 17 to slide down in the gate slot to block the injection port 14. A push block 16 is provided near the bottom of the inner wall of the material gate 17. The push block 16 is on the sliding track of the push plate 15. When the push plate 15 descends and slides over the injection port 14, the material gate 17 descends and blocks the injection port 14 under the elastic force of the spring telescopic rod 29. When the push plate 15 moves up the slide rail injection port 14 , the push plate 15 abuts against the bottom of the push block 16 and pushes the push block 16 to move up, driving the material door 17 to move up and slide into the door slot so that the injection port 14 is opened.

[0055] A material groove 12 arranged in a spiral track is provided on the outer wall of the injection barrel 2, and the cross section of the material groove 12 is an inwardly concave arc.

[0056] The driving device includes a circular ring-shaped slide groove 24 opened on the base 3, the slide groove 24 penetrates the base 3 in the vertical direction, the upper part of the injection barrel 2 passes through the slide groove 24, and the top and bottom of the slide groove 24 are rotatably provided with circular ring-shaped sealing blocks 25 whose shapes are adapted to the slide groove 24. The outer wall of the injection barrel 2 passes through the two sealing blocks 25 and is rotatably connected to the sealing blocks 25. The sealing blocks 25 connect the inner side of the slide groove 24 with the outer side of the base 3. The injection barrel 2 and the sealing blocks 25 are fixed in the vertical direction so that the injection barrel 2 can only rotate on the sealing blocks 25. Four injection barrels 2 are arranged at equal intervals in the slide groove 24.

[0057] A gear 27 is coaxially connected to the outer wall of the injection barrel 2 in the chute 24. An outer ring gear 26 is rotatably provided on the outer wall of the chute 24, that is, the inner wall of the chute 24 near the edge of the base 3. An inner ring gear 28 is provided on the inner wall of the chute 24, that is, the inner wall of the chute 24 near the center of the base 3. The gear 27 meshes with the outer ring gear 26 and the inner ring gear 28. A support seat 7 is provided at the edge of the base 3, and a motor for driving the outer ring gear 26 to rotate is provided on the support seat 7. The motor drives the outer ring gear 26 to rotate, and the outer ring gear 26 drives the gear 27 to rotate. The gear 27 moves in a circle around the inner ring gear 28 and rotates, and the injection barrel 2 moves in a circle and rotates accordingly, and the sealing block 25 rotates accordingly.

[0058] The base 3 outside the chute 24 is connected to a three-way moving device (not shown in the figure), and a main material pipe 9 is provided on the base 3 at the inner center of the chute 24. The main material pipe 9 is connected to the base 3 and to the three-way moving device, and the bases 3 on both sides of the chute 24 are fixed by the main material pipe 9 and the three-way moving device. A distribution pipe 6 coaxially rotatably connected to the main material pipe 9 and sealed at the bottom of the base 3 is rotatably connected, and four inclined branch pipes 5 are provided on the distribution pipe 6, and the lower end of the branch pipe 5 is connected to the material sleeve 4.

[0059] A circular gas manifold 10 is provided on the base 3 at the outer side of the bottom of the main material pipe 9. The gas manifold 10 and the main material pipe 9 are in a coaxial state. A circular gas ring is rotatably connected to the outer wall of the gas manifold 10. The gas ring and the gas manifold 10 are rotationally sealed. An air control pipe 11 is rotationally sealed and connected to the top of the air pipe 20. The air control pipe 11 is connected to the gas ring and communicated with the gas manifold 10. The gas manifold 10 is provided with a pipeline connected to the air source control system.

[0060] A feeding device is also provided on the upper part of the main material pipe 9. The feeding device includes a material box 31. A fixed block 35 is provided in the material box 31. A slider 34 is provided in the material box 31 above the fixed block 35. The fixed block 35 and the slider 34 are both in the shape of a right-angle trapezoid and their inclined surfaces are arranged oppositely. The sliding surface of the slider 34 can make its inclined surface approach or move away from the inclined surface of the fixed block 35. A passage for the material to pass through is formed between the inclined surfaces of the fixed block 35 and the slider 34. The inclined surfaces of the fixed block 35 and the slider 34 have the same inclination direction. A feeding tube 32 is provided on the material box 31 above the higher end of the inclined surfaces of the fixed block 35 and the slider 34. The bottom end of the feeding tube 32 extends into the material box 31 and is above the higher end of the fixed block 35. A soft sealing layer 33 is provided between the bottom end of the feeding tube 32 and the end of the slider 34. The sealing layer 33 is used as a material guide so that the material output from the feeding tube 32 enters the higher end of the fixed block 35. A hydraulic cylinder 37 for driving the slider 34 to slide is provided in the material box 31 at the lower end side of the inclined surface of the slider 34. The hydraulic cylinder 37 drives the slider 34 to slide horizontally to make its inclined surface approach or move away from the inclined surface of the fixed block 35. A hopper 38 is provided at the bottom of the lower end of the inclined surface of the fixed block 35. The hopper 38 is in the shape of a truncated cone with a small diameter end facing downward. The bottom of the hopper 38 is connected to a feed pipe 30 connected to the main material pipe 9.

[0061] The inclination angle of the inclined surface of the fixed block 35 is smaller than that of the inclined surface of the sliding block 34, that is, the angle between the inclined surface of the fixed block 35 and the horizontal plane is smaller than the angle between the inclined surface of the sliding block 34 and the horizontal plane, so that the distance between the inclined surface of the fixed block 35 and the inclined surface of the sliding block 34 gradually decreases in the direction of material movement between the fixed block 35 and the sliding block 34. A plurality of pyramid-shaped crushing teeth 36 are arranged on the inclined surfaces of the fixed block 35 and the sliding block 34, and the crushing teeth 36 gradually decrease and the arrangement density gradually increases in the direction from the higher end to the lower end of the inclined surface.

[0062] After the basalt material is initially crushed, it is sent to the discharge pipe 32 through the conveying equipment. The hydraulic cylinder 37 drives the slider 34 to slide back and forth horizontally. After the stone falls on the inclined surface of the fixed block 35, it slides to the lower end of the inclined surface under the action of gravity. In this process, the slider 34 constantly approaches the fixed block 35, and the inclined surfaces of the slider 34 and the fixed block 35 squeeze and crush the stone. As the stone slides down, the distance between the slider 34 and the inclined surface of the fixed block 35 gradually decreases, the crushing teeth 36 decreases, and the arrangement density of the crushing teeth 36 gradually increases, so as to achieve graded crushing of the stone. The crushed stone enters the feed pipe 30 and the main material pipe 9 from the hopper 38, the stone enters the distribution pipe 6 from the main material pipe 9, and then enters the four branch pipes 5 from the distribution pipe 6. The stone finally enters the injection port 14 from the material sleeve 4 and falls into the injection barrel 2. At this time, the push plate 15 rises and is in a reset state. The push plate 15 is at the top of the injection port 14. The material door 17 is pushed up by the push plate 15 along with the push block 16, so that the injection port 14 is in an open state. The push rod 13 is in an ascending state, and the sealing plate 8 blocks the bottom of the injection barrel 2. The stone enters the injection barrel 2 and fills the injection barrel 2.

[0063] When unloading, the three-way mobile device drives the base 3 to move so that the injection barrel 2 is inserted into the molten pool in the furnace body 1, and then the motor drives the outer ring gear 26 to rotate, and the outer ring gear 26 drives the gears 27 on the outer walls of the four injection barrels 2 to rotate, so as to realize the circular motion and self-rotation of the four injection barrels 2. The self-rotation direction of the injection barrel 2 is the spiral rising direction of the material trough 12. During the circular motion and self-rotation process, the injection barrel 2 realizes the stirring of the molten pool, and the material trough 12 can push the material in the molten pool to roll upward, thereby further improving the stirring effect and improving the temperature of the top area of ​​the molten pool. The air source control system inflates the elastic airbag 22. The expansion of the elastic airbag 22 pushes the push plate 15 to slide down. At the same time, the drive ring 21 rotates to make the push rod 13 slide down. The push rod 13 drives the sealing plate 8 to slide down and extend out of the bottom opening of the injection barrel 2. The material in the injection barrel 2 is pushed and squeezed by the push plate 15 and output from the bottom opening of the injection barrel 2. While the injection barrel 2 injects material into the molten pool and the injection barrel 2 moves in a circle and rotates, the three-way moving device drives the base 3 to move horizontally and gradually rise or fall, so that the material is not only discharged at the same horizontal height, but also dispersed into the melt more evenly. When the push plate 15 slides down and passes through the injection port 14, the elastic force of the spring telescopic rod 29 pushes the material gate 17 to slide down and seal the injection port 14. After the injection barrel 2 completes the injection, the three-way mobile device drives the base 3 to rise and separate the injection barrel 2 from the molten pool, and then the air source control system extracts the gas inside the elastic airbag 22 to make it negative pressure inside, and the elastic airbag 22 contracts to drive the push plate 15 to slide up, and the elastic force of the contraction of the spring 23 in the elastic airbag 22 also drives the push plate 15 to slide up until it is reset. Before the push plate 15 is reset, the drive ring 21 rotates to make the push rod 13 rise and drive the sealing plate 8 to block the bottom of the injection barrel 2. After the push plate 15 is reset, the push block 16 on the material door 17 is pushed up by the push plate 15, and the material door 17 is in an open state. The material can be injected into the injection barrel 2 from the injection port 14 and wait for the next injection. During the circular motion and rotation of the injection barrel 2, the material sleeve 4 rotates on the injection barrel 2, the distribution pipe 6 rotates on the main material pipe 9, the air control pipe 11 rotates on the air pipe 20, and the air ring rotates on the air manifold 10.

[0064] The present invention can feed the stone into the injection device after crushing. During the crushing process, the stone passes through the channel that is gradually reduced and squeezed. The crushing teeth 36 on the channel are gradually reduced and the arrangement density is gradually increased, so that the stone is graded and crushed, so that the particle size of the stone is uniform after crushing. In addition, the material discharge can be controlled by controlling the slider 34. When the slider 34 approaches the fixed block 35 and is temporarily fixed, the channel is reduced, and the material in the channel is squeezed and crushed. When the slider 34 is not far away from the fixed block 35, the material in the channel stops moving, and the material discharge is stopped. When the material discharge is resumed, the slider 34 can enter reciprocating sliding again, so that the material discharge can be controlled without manual operation or without the participation of material valves.

[0065] After the crushed stone fills the injection barrel 2, multiple injection devices are inserted into the molten pool of the furnace body 1, and the insertion depth is controllable. During injection, the motor drives the multiple injection barrels 2 to move in a circle and rotate. The injection barrel 2 realizes stirring of the molten pool, provides fluidity of the melt in the upper part of the molten pool, and makes the temperature of the injection area uniform. The outer wall of the injection barrel 2 has a spiral material groove 12, so that the melt is lifted during the rotation of the injection barrel 2, so that the melt in the lower area of ​​the molten pool has a certain fluidity upward, the temperature of the molten pool surface is increased, and the temperature in the discharge area above the molten pool is further uniform. In the process of injecting materials into the molten pool, the injection barrel 2 moves in a circle, and the movement area of ​​the injection barrel 2 and the height of the bottom discharge can be controlled by a three-way moving device, so that the material is evenly dispersed in the molten pool, avoiding the material being discharged in a local area of ​​the molten pool, resulting in low heating efficiency of the material. The material is evenly dispersed in the molten pool to increase the contact area between the material and the melt, thereby improving the melting efficiency of the material.

[0066] The above embodiments are only preferred embodiments of the present invention and are not limitations of the technical solutions of the present invention. Any technical solution that can be implemented on the basis of the above embodiments without creative work should be deemed to fall within the scope of protection of the patent of the present invention.

Claims

1. A furnace for producing basalt fiber, characterized in that: include: Furnace body; A base, which is arranged above the furnace body and connected to the three-way moving device; A plurality of injection devices are arranged on the base, including: Injection barrel; The injection port is arranged on the side wall of the injection barrel; A push plate is slidably arranged in the injection barrel; A push rod is slidably arranged in the injection barrel; A sealing plate is arranged at the bottom of the injection barrel and connected to the push rod; The feeding device is arranged above the base and comprises: Material box; A fixed block is arranged in the material box; A sliding block is slidably arranged in the material box and is located obliquely above the fixed block; A hydraulic cylinder is arranged in the material box and drives the slide block to slide away from or towards the fixed block; The shapes of the push plate and the sealing disk are adapted to the inner wall of the injection barrel, a through hole adapted to the push rod is provided at the center of the push plate, the push rod is coaxially slidably connected with the push plate, and the injection barrel is provided with a first driving assembly and a second driving assembly for respectively driving the push plate and the push rod to rise and fall in the injection barrel; The side walls of the fixed block and the sliding block that are close to each other are matched inclined surfaces. A material discharge pipe is provided on the material box above the higher end of the inclined surfaces of the fixed block and the sliding block, and a material delivery pipe is provided on the material box below the lower end of the inclined surfaces of the fixed block and the sliding block. The material delivery pipe is connected to the injection port.

2. The furnace for producing basalt fiber according to claim 1, characterized in that: The fixed block and the sliding block are both in the shape of a right-angled trapezoid and their inclined surfaces are arranged opposite to each other, the inclined directions of the fixed block and the inclined surfaces of the sliding block are the same, and a soft sealing layer is provided between the bottom end of the feed tube and the end of the sliding block; A hopper is provided at the bottom of the lower end of the inclined surface of the fixed block. The hopper is in the shape of a truncated cone with a small diameter end facing downward, and the feed pipe is connected with the bottom of the hopper.

3. The furnace for producing basalt fiber according to claim 2, characterized in that: The inclination angle of the fixed block inclined surface is smaller than the inclination angle of the sliding block inclined surface.

4. The furnace for producing basalt fiber according to claim 3, characterized in that: A plurality of pyramid-shaped crushing teeth are arranged on the inclined surfaces of the fixed block and the sliding block. In the direction from the higher end to the lower end of the inclined surface, the crushing teeth gradually become smaller and the arrangement density gradually increases.

5. The furnace for producing basalt fiber according to claim 1, characterized in that: The base is provided with a driving device, which includes an annular slide groove opened on the base, the slide groove penetrates the base in the vertical direction, the upper part of the injection barrel passes through the slide groove, the top and bottom of the slide groove are rotatably provided with annular sealing blocks with a shape matching the slide groove, and the outer wall of the injection barrel passes through the two sealing blocks and is rotatably connected to the sealing blocks.

6. The furnace for producing basalt fiber according to claim 5, characterized in that: A gear is coaxially connected to the outer wall of the injection barrel in the slide groove, an outer ring gear is rotatably provided on the outer wall of the slide groove, an inner ring gear is provided on the inner wall of the slide groove, the gear is meshed with the outer ring gear and the inner ring gear, a support seat is provided at the edge of the base, and a motor for driving the outer ring gear to rotate is provided on the support seat.

7. The furnace for producing basalt fiber according to claim 6, characterized in that: The outer side of the injection port is sleeved with a material sleeve, the material sleeve is annular and rotatably arranged on the outer wall of the injection barrel, there is a gap between the inside of the material sleeve and the injection barrel to form a cavity, and the material sleeve is rotatably sealed and connected with the injection barrel; A main material pipe is provided on the base at the inner center of the slide groove, and the main material pipe is connected to the material delivery pipe. A distribution pipe is rotatably connected to the bottom of the base and is coaxially rotatably and sealed with the main material pipe. Four inclined branch pipes are provided on the distribution pipe, and the lower end of the branch pipe is connected to the material sleeve.

8. The furnace for producing basalt fiber according to claim 6, characterized in that: The outer wall of the injection barrel is provided with a material groove arranged in a spiral track, and the cross section of the material groove is an inwardly concave arc; The upper part of the sealing disk is in the shape of a truncated cone with a small diameter end facing upwards and the side surface is in the shape of an inwardly concave arc surface; A material gate is slidably provided in the injection port, and the shape of the material gate is adapted to the shape of the inner wall of the injection barrel. A gate groove for accommodating the material gate is provided in the injection barrel above the injection port, and a slot is provided in the injection barrel at the top of the gate groove. A spring telescopic rod connected to the material gate is vertically provided in the slot, and a push block is provided on the inner wall of the material gate near the bottom end, and the push block is on the sliding track of the push plate.

9. The furnace for producing basalt fiber according to claim 6, characterized in that: The first driving assembly includes a cylindrical elastic airbag, the top of the elastic airbag is connected to the top of the injection barrel, the bottom of the elastic airbag is connected to the push plate, a spring is arranged in the elastic airbag, the top and bottom of the spring are respectively connected to the top of the injection barrel and the push plate, an air pipe is arranged at the top of the injection barrel, and an air control pipe is rotatably sealed on the air pipe; A circular gas manifold is provided on the base on the outer side of the bottom of the main material pipe. The gas manifold and the main material pipe are in a coaxial state. A circular gas ring is rotatably connected to the outer wall of the gas manifold. The gas ring and the gas manifold are rotatably sealed. The gas control pipe is connected to the gas ring and communicated with the gas manifold. The gas manifold is provided with a pipeline connected to the gas source control system.

10. The furnace for producing basalt fiber according to claim 6, characterized in that: The second driving assembly includes a support rod connected to the top of the push rod, the support rod is located above the injection barrel, and both ends of the support rod are connected to vertically arranged guide rods, the guide rods are slidably connected to the top of the injection barrel, the part of the push rod that slides through the top of the injection barrel is provided with an external thread, and the top of the injection barrel is rotatably provided with a driving ring that is sleeved on the outside of the push rod, and the inner wall of the driving ring is provided with an internal thread that cooperates with the external thread of the push rod, and the top of the injection barrel is provided with a driving device that is transmission-connected to the driving ring.

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