A blast furnace taphole plug heating and insulating device

Abstract

The utility model relates to blast furnace mortar heating and heat preservation technical field, specifically disclose a blast furnace mortar heating and heat preservation device, including the shell and the inner bag in the shell inside, the upper side of shell outer wall is provided with the feed port of outer wall thread connection has the sealing cover, the lower extreme of shell is provided with the discharge port of outer wall installation has the electromagnetic valve, the inner bag and shell form the clamp cover between it, its characterized in that: the inside of shell is provided with circulation mechanism, for the circulation heating of mortar, the circulation mechanism includes the sleeve that penetrates and is rotationally connected on the shell upper end surface, the lower end surface of sleeve is fixedly connected with the turntable, the lower side of turntable is fixedly connected with the barrel through a plurality of connecting rods, the outer wall of barrel is fixedly connected with the first helical vane of abutment with the inner wall of inner bag, through the cooperative action of clamp cover spiral heating and internal reverse spiral stirring, the even temperature rise and heat preservation of mortar have been realized, effectively solved the problem that traditional mode is unevenly heated, easy to cake.

Description

Technical Field

[0001] This utility model relates to the field of blast furnace taphole clay heating and insulation technology, and specifically discloses a blast furnace taphole clay heating and insulation device. Background Technology

[0002] Blast furnace taphole clay is a specialized refractory material used to seal the blast furnace taphole. Before use, it needs to be maintained within a specific temperature range (typically 40℃-80℃) to ensure its good plasticity and binding properties. If the clay temperature is too low, it will harden and solidify, resulting in excessive resistance when filling through the clay gun, potentially clogging pipes or damaging equipment. Uneven temperature or excessively high temperatures in certain areas may cause partial performance failure of the clay, affecting the sealing effect of the taphole and posing a safety hazard.

[0003] Currently, the heating and insulation of blast furnace clay mostly utilizes storage tanks with heating jackets or simple insulated boxes. While these methods provide some heating capacity, they still have significant drawbacks: First, in traditional jacketed heating methods, the flow path of the heat medium (such as steam or hot water) is short, resulting in insufficient heat exchange with the inner tank. This leads to a noticeable temperature gradient and heating dead zones within the clay, causing inconsistencies in the condition of the inner and outer layers. Second, as a viscous paste-like material, blast furnace clay exhibits poor heat transfer during prolonged static insulation, making it more prone to forming difficult-to-eliminate "cold nuclei" and sedimentation / caking. Therefore, a heating and insulation device for blast furnace clay is needed to address this problem. Utility Model Content

[0004] This utility model proposes a heating and heat preservation device for blast furnace taphole clay. Through the synergistic effect of jacketed spiral heating and internal reverse spiral stirring, it achieves uniform heating and heat preservation of taphole clay without dead corners, effectively solving the problems of uneven heating, easy agglomeration and residue in the discharge of traditional methods.

[0005] This utility model is implemented as follows: a blast furnace taphole clay heating and insulation device includes a shell and an inner liner located inside the shell. The upper side of the outer wall of the shell is provided with a feed port with a sealing cap threaded to the outer wall. The lower end of the shell is provided with a discharge port with a solenoid valve installed on the outer wall. A jacket is formed between the inner liner and the shell. A circulation mechanism is provided inside the shell for circulating heating of the taphole clay. The circulation mechanism includes a sleeve that passes through and is rotatably connected to the upper end face of the shell. A turntable is fixedly connected to the lower end face of the sleeve. A cylinder is fixedly connected to the lower side of the turntable through multiple connecting rods. A first spiral blade that abuts against the inner wall of the inner liner is fixedly connected to the outer wall of the cylinder. A rotating shaft is rotatably connected to the inner wall of the sleeve. A second spiral blade that abuts against the inner wall of the cylinder is fixedly connected to the outer wall of the rotating shaft.

[0006] In a preferred embodiment of the blast furnace taphole clay heating and insulation device of this utility model, a bracket is fixedly connected to the upper end face of the shell, a first drive motor and a second drive motor are installed on the upper end face of the bracket, the output end of the first drive motor is fixedly connected to the rotating shaft, the output end of the second drive motor extends to the lower part of the bracket and is fixedly connected to a first sprocket, a second sprocket is fixedly connected to the upper end of the outer wall of the sleeve, and the first sprocket and the second sprocket are connected by chain drive.

[0007] As a preferred embodiment of the blast furnace taphole clay heating and insulation device of this utility model, spiral guide vanes are fixedly connected between the inner walls of the jacket, and the outer wall of the shell is connected to an inlet and an outlet that are connected to the jacket.

[0008] As a preferred embodiment of the blast furnace taphole mud heating and insulation device of this utility model, the outer wall of the shell is provided with an insulation layer.

[0009] As a preferred embodiment of the blast furnace taphole clay heating and insulation device of this utility model, a temperature sensor is provided on the upper side inside the shell.

[0010] As a preferred embodiment of the blast furnace taphole clay heating and insulation device of this utility model, the outer wall of the shell is provided with a controller, and the solenoid valve, the first drive motor, the second drive motor and the temperature sensor are all electrically connected to the controller.

[0011] The beneficial effects of this utility model are: 1. The spiral guide vanes inside the jacket guide the hot water to form an orderly flow, achieving uniform heating of the inner tank. At the same time, the mechanical circulation mechanism driven by the spiral vanes rotating in opposite directions creates strong convection inside the tank, completely breaking down temperature stratification and clay clumping. It eliminates local overheating or low-temperature cold spots from both the heat conduction and convection mixing levels, ensuring a high degree of uniformity in the overall temperature of the clay and fundamentally avoiding the problems of local hardening or premature solidification caused by uneven heating.

[0012] 2. The device integrates the control of the drive motor, temperature sensor and discharge solenoid valve through the controller, realizing the automated operation and temperature control of the entire process of heating, heat preservation, stirring and discharge. While improving the safety and stability of operation, it significantly reduces the intensity of manual operation. The unique reverse spiral design works in concert during discharge to almost completely discharge the sludge in the tank, avoiding residual waste and cleaning problems. Together with the high-efficiency insulation layer on the outside of the shell, it forms an energy-saving, clean and thorough discharge solution. Attached Figure Description

[0013] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0014] Figure 1 This is an overall structural diagram of a blast furnace taphole mud heating and insulation device according to the present invention.

[0015] Figure 2 This is a front sectional view of a blast furnace taphole mud heating and insulation device according to the present invention.

[0016] Figure 3 This is an internal structural diagram of a blast furnace taphole mud heating and insulation device according to the present invention.

[0017] The markings in the diagram are: 1. Inner liner; 2. Shell; 3. Jacket; 4. Sleeve; 5. Turntable; 6. Connecting rod; 7. Cylinder; 8. First helical blade; 9. Rotating shaft; 10. Second helical blade; 11. Support; 12. First drive motor; 13. Second drive motor; 14. First sprocket; 15. Second sprocket; 16. Guide vane; 17. Insulation layer; 18. Temperature sensor. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings and specific embodiments to aid in understanding its content. Unless otherwise specified, the methods used in this invention are conventional methods; the raw materials and apparatus used, unless otherwise specified, are conventional commercially available products.

[0019] Please see Figure 1-3 A blast furnace taphole clay heating and insulation device includes a shell 2 and an inner liner 1 located inside the shell 2. The upper side of the outer wall of the shell 2 is provided with a feed port with a sealing cap threaded to the outer wall. The lower end of the shell 2 is provided with a discharge port with a solenoid valve installed on the outer wall. A jacket 3 is formed between the inner liner 1 and the shell 2. A circulation mechanism is provided inside the shell 2 for circulating heating of the taphole clay. The circulation mechanism includes a sleeve 4 that passes through and is rotatably connected to the upper end face of the shell 2. A turntable 5 is fixedly connected to the lower end face of the sleeve 4. A cylinder 7 is fixedly connected to the lower side of the turntable 5 through multiple connecting rods 6. A first spiral blade 8 that abuts against the inner wall of the inner liner 1 is fixedly connected to the outer wall of the cylinder 7. A rotating shaft 9 is rotatably connected to the inner wall of the sleeve 4. A second spiral blade 10 that abuts against the inner wall of the cylinder 7 is fixedly connected to the outer wall of the rotating shaft 9.

[0020] In this embodiment: hot water enters the jacket 3 through the inlet and spirals forward under the guidance of the spiral guide vanes 16. After fully exchanging heat with the inner liner 1, it is discharged from the outlet, achieving uniform heating of the inner liner 1. Simultaneously, the second drive motor 13 drives the sleeve 4 and the cylinder 7 to rotate through a sprocket and chain mechanism, which in turn drives the first spiral vane 8 to rotate, stirring and conveying the clay downwards. Meanwhile, the first drive motor 12 drives the rotating shaft 9 and the second spiral vane 10 to rotate in opposite directions inside the cylinder 7, stirring and conveying the clay upwards. Through the counter-rotation of the inner and outer spiral vanes, the clay is forced to circulate in the annular space between the inner liner 1 and the cylinder 7 and inside the cylinder 7, thereby completely breaking up clumps, eliminating cold spots, and ensuring uniform heating and consistent temperature of the clay. This device effectively solves the problems of large temperature difference between the inside and outside of the clay, local overheating, or hardening caused by traditional heat preservation methods. By combining mechanical circulation with uniform heat conduction, it ensures that the clay is always in the optimal plastic state, guaranteeing the smooth and safe operation of the blast furnace taphole and opening process.

[0021] As a technical optimization of this utility model, a bracket 11 is fixedly connected to the upper end face of the housing 2. A first drive motor 12 and a second drive motor 13 are installed on the upper end face of the bracket 11. The output end of the first drive motor 12 is fixedly connected to the rotating shaft 9. The output end of the second drive motor 13 extends to the lower part of the bracket 11 and is fixedly connected to a first sprocket 14. A second sprocket 15 is fixedly connected to the upper end of the outer wall of the sleeve 4. The first sprocket 14 and the second sprocket 15 are connected by chain drive.

[0022] In this embodiment: the first drive motor 12 is started, which drives the rotating shaft 9 to rotate, and then drives the second spiral blade 10 to rotate, conveying the clay on the lower side of the inner liner 1 upward into the cylinder 7; the second drive motor 13 is started, which drives the first sprocket 14 to rotate, and then drives the second sprocket 15 to rotate through the chain, and the second sprocket 15 further drives the sleeve 4 to rotate, and then drives the cylinder 7 to rotate through the turntable 5 and the connecting rod 6, and the cylinder 7 further drives the first spiral blade 8 to rotate, conveying the clay inside the inner liner 1 downward.

[0023] As a technical optimization of this utility model, a spiral guide vane 16 is fixedly connected between the inner walls of the jacket 3, and the outer wall of the shell 2 is connected to an inlet and an outlet that are connected to the jacket 3.

[0024] In this embodiment, the spiral guide vanes 16 are used to extend the flow path of hot water in the jacket 3, thereby forcing the hot water to have a full and uniform heat exchange with the inner tank 1, which greatly improves the heating efficiency and temperature uniformity.

[0025] As a technical optimization of this utility model, the outer wall of the shell 2 is provided with a heat insulation layer 17.

[0026] In this embodiment, by setting a rock wool insulation layer 17 on the outer wall of the shell 2, the internal heat loss to the outside is effectively blocked, which plays a significant role in energy saving and consumption reduction and stabilizing the internal temperature.

[0027] As a technical optimization of this utility model, a temperature sensor 18 is provided on the upper side inside the housing 2.

[0028] In this embodiment, the temperature sensor 18 can effectively monitor the temperature inside the inner liner 1, thereby avoiding scorching of the clay due to local overheating and achieving more precise and safer temperature control.

[0029] As a technical optimization of this utility model, a controller is provided on the outer wall of the housing 2, and the solenoid valve, the first drive motor 12, the second drive motor 13 and the temperature sensor 18 are all electrically connected to the controller.

[0030] In this embodiment, the controller facilitates the normal operation of the solenoid valve, the first drive motor 12, and the second drive motor 13.

[0031] The working principle and usage process of this utility model are as follows: During use, hot water enters the jacket 3 through the inlet and spirals forward under the guidance of the spiral guide vanes 16. After fully exchanging heat with the inner liner 1, it is discharged from the outlet, achieving uniform heating of the inner liner 1. Then, the feed inlet is opened, and clay is introduced into the inner liner 1. Simultaneously, the second drive motor 13 drives the sleeve 4 and the cylinder 7 to rotate via a sprocket and chain mechanism, causing the first spiral vanes 8 to rotate, stirring and conveying the clay downwards. Meanwhile, the first drive motor 12 drives the rotating shaft 9 and the second spiral vanes 10 to rotate in opposite directions within the cylinder 7, stirring and conveying the clay upwards. Through the counter-rotation of the inner and outer sets of spiral vanes, the clay is forced to circulate in the annular space between the inner liner 1 and the cylinder 7, and within the cylinder 7, thereby completely breaking up clumps, eliminating cold spots, and ensuring uniform heating and consistent temperature of the clay. During discharge, the first drive motor 12 drives the rotating shaft 9 and the second spiral blade 10 to rotate in the same direction as the first spiral blade 8, conveying all the taphole clay in the inner liner 1 and cylinder 7 downwards. The solenoid valve on the outer wall of the discharge port is then opened to discharge the taphole clay. This device effectively solves the problems of large temperature differences between the inside and outside of the taphole clay, localized overheating, or hardening caused by traditional insulation methods. Through the combination of mechanical circulation and uniform heat conduction, it ensures that the taphole clay is always in an optimal plastic state, guaranteeing smooth and safe operation and preventing blockages at the blast furnace taphole.

[0032] In the description of this utility model, it should be understood that the terms "left", "right", "up", "down", "top", "bottom", "front", "back", "inner", "outer", "back", "middle", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0033] However, the above description is merely a specific embodiment of this utility model and should not be construed as limiting the scope of implementation of this utility model. Therefore, any substitution of equivalent components or equivalent changes and modifications made in accordance with the scope of protection of this utility model should still fall within the scope of the claims of this utility model.

Claims

1. A blast furnace slag heating and insulation device, comprising a shell (2) and an inner liner (1) located inside the shell (2), wherein an inlet with a sealing cap threaded to the upper side of the outer wall of the shell (2) is provided, and an outlet with a solenoid valve installed on the outer wall is provided at the lower end of the shell (2), and a jacket (3) is formed between the inner liner (1) and the shell (2), characterized in that: The shell (2) is provided with a circulation mechanism for circulating heating of the clay. The circulation mechanism includes a sleeve (4) that passes through and is rotatably connected to the upper end face of the shell (2). A turntable (5) is fixedly connected to the lower end face of the sleeve (4). A cylinder (7) is fixedly connected to the lower side of the turntable (5) through multiple connecting rods (6). A first spiral blade (8) that abuts against the inner wall of the inner liner (1) is fixedly connected to the outer wall of the cylinder (7). A rotating shaft (9) is rotatably connected to the inner wall of the sleeve (4). A second spiral blade (10) that abuts against the inner wall of the cylinder (7) is fixedly connected to the outer wall of the rotating shaft (9).

2. The blast furnace taphole clay heating and insulation device according to claim 1, characterized in that: A bracket (11) is fixedly connected to the upper end face of the housing (2). A first drive motor (12) and a second drive motor (13) are installed on the upper end face of the bracket (11). The output end of the first drive motor (12) is fixedly connected to the rotating shaft (9). The output end of the second drive motor (13) extends to the lower part of the bracket (11) and is fixedly connected to a first sprocket (14). A second sprocket (15) is fixedly connected to the upper end of the outer wall of the sleeve (4). The first sprocket (14) and the second sprocket (15) are connected by chain drive.

3. The blast furnace taphole clay heating and insulation device according to claim 1, characterized in that: Spiral guide vanes (16) are fixedly connected between the inner walls of the jacket (3), and the outer wall of the shell (2) is connected to the inlet and outlet of the jacket (3).

4. The blast furnace taphole clay heating and insulation device according to claim 1, characterized in that: The outer wall of the shell (2) is provided with a heat insulation layer (17).

5. The blast furnace taphole clay heating and insulation device according to claim 2, characterized in that: A temperature sensor (18) is provided on the upper side inside the housing (2).

6. The blast furnace taphole clay heating and insulation device according to claim 5, characterized in that: The outer wall of the housing (2) is provided with a controller, and the solenoid valve, the first drive motor (12), the second drive motor (13) and the temperature sensor (18) are all electrically connected to the controller.

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