Magnesia carbon brick raw material mixing equipment capable of heating raw materials

Abstract

The utility model belongs to the technical field of magnesia carbon brick production, and particularly relates to magnesia carbon brick raw material mixing equipment capable of heating raw materials, which comprises a mixing barrel, a driving stirring system and a heating system, and a plurality of heating modules are uniformly distributed on the outer wall of the mixing barrel to realize efficient and uniform heating; meanwhile, a plurality of shells with telescopic auxiliary stirring devices are arranged on the periphery of the mixing barrel, a vertical plate and an auxiliary rod fixed to the vertical plate are arranged in each shell, the auxiliary rods can stretch into the mixing barrel through penetrating holes in the barrel wall, the vertical plates are connected with a telescopic driving mechanism, and an electric push rod can be matched with a slope push block and a spring reset structure; or an electric push rod is adopted to drive a gear-rack transmission structure, so that extension stirring and retraction hiding of the auxiliary rod are realized. According to the utility model, raw materials can be effectively heated, the viscosity is reduced, the mixing uniformity is obviously improved and dead angles are reduced through the synergistic effect of central stirring and the retractable auxiliary rod, and the equipment is convenient to clean and maintain.

Description

Technical Field

[0001] This utility model relates to the field of magnesia-carbon brick production technology, and in particular to a magnesia-carbon brick raw material mixing device that can heat raw materials. Background Technology

[0002] Magnesia-carbon bricks are an important refractory material, widely used in metallurgy, building materials and other industries. During their production, the uniformity of raw material mixing directly affects the performance of the final product. Traditional mixing equipment often relies only on the central stirring shaft and stirring rod, which has a weak stirring effect on materials near the cylinder wall or bottom, and is prone to creating mixing dead zones.

[0003] To address the aforementioned issues, measures to improve mixing dead zones often employ complex multi-axis stirring or variable frequency speed control methods, which are structurally complex and have high maintenance costs. Therefore, it is necessary to develop a heating material mixing equipment for magnesia-carbon bricks that is structurally sound, provides uniform mixing, and is easy to maintain. Utility Model Content

[0004] Based on the technical problems existing in the prior art, this utility model proposes a magnesia-carbon brick raw material mixing device that can heat raw materials.

[0005] This utility model discloses a heating material mixing device for magnesia-carbon bricks, comprising a mixing cylinder; a mixing motor is installed at the top of the mixing cylinder, the output shaft of the mixing motor is connected to a stirring shaft extending into the mixing cylinder, and a plurality of stirring rods are provided on the stirring shaft; a plurality of shells are also provided on the outer circumference of the mixing cylinder, the top of the shells having an opening, and a detachable shell cover is provided at the opening; a vertical plate is provided inside the shell, and a plurality of auxiliary rods are fixed on the side of the vertical plate, the auxiliary rods extending into the mixing cylinder from corresponding auxiliary rod through holes on the mixing cylinder wall; the vertical plate is connected to a telescopic drive mechanism for driving the auxiliary rods to extend into or retract into the mixing cylinder.

[0006] Preferably, the telescopic drive mechanism includes an electric push rod installed on the side of the outer wall of the housing. The output shaft of the electric push rod is connected to a push block. A force-bearing block fixedly connected to a vertical plate is provided below the push block. An inclined surface is provided on the side of the force-bearing block facing the push block. The push block is slidably connected to the housing through a slide rail. A spring is sleeved on the auxiliary rod. One end of the spring abuts against the vertical plate, and the other end abuts against the outer wall of the mixing cylinder or the internal structure of the housing.

[0007] Preferably, the telescopic drive mechanism includes an electric actuator two installed on the side of the outer wall of the housing, the output shaft of the electric actuator two being connected to a rack one, the rack one being slidably connected to the housing via a slide rail two; the housing also includes a rack two arranged parallel to the rack one, the rack two being fixedly connected to a vertical plate; a gear meshes between the rack one and the rack two, the gear being mounted via a gear mounting bracket, the gear mounting bracket being fixedly connected to the slide rail two.

[0008] Preferably, a plurality of heating modules are provided on the outer circumference of the mixing cylinder; the heating modules are one of an electric heating rod, an electromagnetic induction heating coil, or a hot air circulation hood, and are evenly distributed on the outer circumference of the mixing cylinder.

[0009] Preferably, the stirring rods are arranged in multiple layers on the stirring shaft, each layer including at least three stirring rods evenly distributed along the circumference, and the stirring rods of adjacent layers are staggered.

[0010] Preferably, the end shape of the auxiliary rod is paddle-shaped, rake-shaped, or flat-headed.

[0011] Preferably, a control valve is provided on the discharge pipe.

[0012] Preferably, the device further includes a temperature sensor and a controller, the temperature sensor being disposed on the inner wall of the mixing cylinder, and the controller being electrically connected to the temperature sensor and the heating module.

[0013] Compared with the prior art, this utility model provides a magnesia-carbon brick raw material mixing device that can heat raw materials, which has the following beneficial effects:

[0014] By installing multiple heating modules on the outer wall of the mixing drum, the drum wall can be heated directly and evenly. The heat is quickly transferred to the raw materials inside, effectively reducing the viscosity of the raw materials and improving their fluidity and dispersibility, thereby improving the uniformity and efficiency of mixing. Moreover, the heating method is direct and the energy consumption is relatively low. By setting temperature sensors and controllers, real-time monitoring and automatic control of the temperature during the mixing process can be realized, ensuring that the heating process is stable within the temperature range required by the process and improving the consistency of product quality.

[0015] By setting an auxiliary rod controlled by a telescopic drive mechanism, the auxiliary rod can be extended into the mixing cylinder during the mixing process, working in conjunction with the central stirring shaft to enhance the stirring of materials near the cylinder wall and bottom, significantly reducing mixing dead zones and improving overall mixing uniformity.

[0016] When not in operation or under maintenance, the telescopic drive mechanism can completely retract the auxiliary rod into the housing. This design allows the auxiliary rod to not occupy the internal space of the mixing cylinder, making it convenient to thoroughly clean the inside of the mixing cylinder. It also facilitates the inspection and maintenance of the auxiliary rod and the telescopic drive mechanism, thus improving the practicality and service life of the equipment. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the internal structure of the present invention;

[0019] Figure 3 This utility model Figure 2 A partially enlarged structural diagram;

[0020] Figure 4 This is a schematic diagram of the telescopic drive mechanism of this utility model.

[0021] In the diagram: 1. Mixing cylinder; 101. Feed pipe; 102. Discharge pipe; 2. Mixing motor; 3. Stirring shaft; 4. Stirring rod; 5. Shell; 501. Opening; 502. Shell cover; 6. Vertical plate; 7. Auxiliary rod; 8. Auxiliary rod through hole; 9. Electric push rod one; 10. Push block; 11. Force-bearing block; 12. Slide rail one; 13. Spring; 14. Electric push rod two; 15. Rack one; 16. Rack two; 17. Gear; 18. Slide rail two; 19. Gear mounting bracket; 20. Heating module. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", 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.

[0024] Example 1: Refer to Figure 1 , Figure 2 and Figure 3 A heating material mixing device for magnesia-carbon bricks mainly includes a mixing cylinder 1, a driving stirring system, a heating system, and a retractable auxiliary stirring system.

[0025] The mixing cylinder 1 is a vertical cylindrical structure made of heat-resistant stainless steel, which has good thermal conductivity and strength. It is equipped with a feed pipe 101 at the top for feeding raw materials such as magnesia, graphite powder, and binder. The bottom conical opening is connected to the discharge pipe 102, which is equipped with a pneumatic butterfly valve to control the discharge. The mixing cylinder 1 is fixed to the working area by a bracket or other means.

[0026] The driving mixing system includes a mixing motor 2, a mixing shaft 3, and a mixing rod 4. The mixing motor 2 is installed at the top center of the mixing cylinder 1 via a reducer, and its output shaft is vertically connected to the mixing shaft 3. The mixing shaft 3 extends into the mixing cylinder 1, and multiple layers of mixing rods 4 are welded on it.

[0027] The heating system includes multiple heating modules 20, which are electric heating rods, electromagnetic induction heating coils, or hot air circulation covers. In this embodiment, the heating module 20 consists of three sets of resistance heating rods evenly arranged around the outer wall of the mixing cylinder 1. They are fixed to the outer wall of the mixing cylinder 1 by mounting clamps. The heating module 20 is connected to an external temperature control system via cables. It can heat the mixing cylinder 1 according to process requirements, so that the material inside the cylinder is maintained at a suitable temperature of 40-80°C, thereby reducing the viscosity of the binder.

[0028] The retractable auxiliary stirring system is one of the core improvements of this utility model. Three shells 5 are evenly fixed along the circumference of the outer wall of the mixing cylinder 1. The shells 5 are also made of stainless steel, are rectangular, and are hollow inside. An opening 501 is provided on the top of the shell 5. A detachable shell cover 502 is fixed to the opening 501 by bolts, which makes it easy to open and maintain the interior.

[0029] Each housing 5 is provided with a vertical plate 6, which can slide horizontally within the housing 5. Multiple horizontally arranged auxiliary rods 7 are welded to the side of the vertical plate 6 facing the mixing cylinder 1. The cylinder wall of the mixing cylinder 1 is provided with auxiliary rod through holes 8 corresponding to the positions of the auxiliary rods 7. The auxiliary rods 7 can pass through the auxiliary rod through holes 8 and extend into the interior of the mixing cylinder 1. The ends of the auxiliary rods 7 are processed into paddle shape, rake tooth shape or flat head shape to increase the stirring area of ​​the material.

[0030] The telescopic drive mechanism is used to drive the vertical plate 6 and the auxiliary rod 7 to move horizontally. In this embodiment, the first drive method is adopted: an electric push rod 9 is fixedly installed on the side of the housing 5 away from the mixing cylinder 1 by a bracket. The end of the push rod 9 is connected to a push block 10. The push block 10 is connected to the outer wall of the housing 5 by a slide rail 12, so that it can only slide in the vertical direction. On the side of the vertical plate 6 away from the mixing cylinder 1, a force block 11 is fixedly connected. The side of the force block 11 facing the push block 10 is processed into an inclined slope. On each auxiliary rod 7, a spring 13 is sleeved. One end of the spring 13 abuts against the vertical plate 6, and the other end abuts against the outer wall of the mixing cylinder 1 (or the partition inside the housing 5 near the mixing cylinder 1).

[0031] Its working principle is as follows: When auxiliary stirring is required, the electric push rod 9 is activated, and its output shaft extends to push the push block 10 downward. The lower surface of the push block 10 contacts the inclined surface of the force block 11. As the push block 10 continues to move forward, the inclined surface converts the vertical downward thrust into a horizontal inward component force, thereby pushing the force block 11 and the vertical plate 6 and auxiliary rod 7 fixed thereto into the mixing cylinder 1 until the auxiliary rod 7 extends into the predetermined stirring position. At this time, the spring 13 is compressed. After the auxiliary rod 7 extends in, while the central stirring shaft 3 rotates, the stationary (or differentially moving with the stirring shaft 3 through program control) auxiliary rod 7 can generate a strong shearing and blocking effect on the material flowing near it. In particular, it can effectively break the laminar flow in the area near the cylinder wall and push the edge material towards the central stirring area, greatly improving the mixing uniformity.

[0032] When the mixing process is completed, or when equipment cleaning or maintenance is required, the output shaft of the electric actuator 9 retracts, the push block 10 moves back, and the pressure on the inclined surface of the force block 11 is released. At this time, the compressed spring 13 releases its elastic force, pushing the vertical plate 6 to reset, thereby pulling the auxiliary rod 7 completely out and retracting it into the housing 5. Finally, the electric actuator 9 can be closed. At this time, the auxiliary rod 7 is completely detached from the inner cavity of the mixing cylinder 1, which will not hinder the discharge of materials and also makes it convenient for operators to open the housing cover 502 to maintain the inside of the housing 5, the auxiliary rod 7, and the drive mechanism.

[0033] Example 2: Refer to Figure 1 , Figure 2 and Figure 4 The main difference between this embodiment and embodiment 1 is that the specific structure of the telescopic drive mechanism is different, while other parts such as mixing cylinder 1, stirring system, heating system, etc. are the same.

[0034] In this embodiment, the telescopic drive mechanism includes an electric actuator 14, a rack 15, a rack 16, a gear 17, a slide rail 18, and a gear mounting bracket 19. The electric actuator 14 is horizontally mounted on the outer wall of the housing 5, and its output shaft is connected to the rack 15. The rack 15 is slidably connected to the outer wall of the housing 5 through the slide rail 18 to ensure its linear motion. Inside the housing 5, a rack 16 is arranged parallel to the rack 15. The rack 16 is fixedly connected to the vertical plate 6. A gear 17 meshes between the rack 15 and the rack 16. The gear 17 is mounted on the gear mounting bracket 19 through a bearing. The gear mounting bracket 19 is fixedly mounted on the slide rail 18 or the housing 5.

[0035] Its working principle is as follows: When the auxiliary rod 7 needs to be extended, the electric push rod 14 is activated. Its output shaft drives the rack 15 to move away from the mixing cylinder 1. Since the rack 15 meshes with the upper part of the gear 17, the gear 17 rotates accordingly. The lower part of the gear 17 meshes with the rack 16. The rotation of the gear 17 will drive the rack 16 to move closer to the mixing cylinder 1. The rack 16 drives the vertical plate 6 and the auxiliary rod 7 to move to the right synchronously, so that the auxiliary rod 7 passes through the auxiliary rod through hole 8 and extends into the mixing cylinder 1. Since the transmission ratio of the gear and rack is fixed, the movement is smooth and precise, and the extension stroke is easy to control. When the auxiliary rod 7 needs to be retracted, the output shaft of the electric push rod 14 is controlled to retract, and finally the auxiliary rod 7 is completely retracted into the housing 5.

[0036] The driving method in this embodiment does not require spring reset. The bidirectional precise control of the auxiliary rod 7 is achieved entirely by the forward and reverse movement of the electric actuator 14. The structure is also compact and reliable.

[0037] Instructions for use: During operation, first set the heating temperature according to the process requirements through the temperature control system, then start the heating module 20 to preheat the mixing cylinder 1. Once the temperature reaches the set range, add the raw materials through the feed pipe 101, start the mixing motor 2, and drive the stirring shaft 3 and stirring rod 4 to rotate for basic mixing. Simultaneously, depending on the material characteristics (such as high viscosity or easy agglomeration), activate the telescopic drive mechanism (electric push rod 1 9 or electric push rod 2 14) to extend the auxiliary rods 7 inside each housing 5 into the mixing cylinder 1 to a specified depth to participate in auxiliary stirring. The combined effect of heating and mechanical stirring ensures rapid and uniform mixing of the raw materials. After mixing is complete, first control the telescopic drive mechanism to retract all the auxiliary rods 7 into the housing 5, then open the valve on the discharge pipe 102 to discharge the mixed material. For periodic maintenance, the power can be turned off, the housing cover 502 can be removed, and the inside of the housing 5 and the auxiliary rods 7 can be cleaned and inspected.

[0038] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A heating material mixing device for magnesia-carbon bricks, comprising a mixing cylinder, a mixing motor mounted on the top of the mixing cylinder, the output shaft of the mixing motor connected to a stirring shaft extending into the mixing cylinder, and a plurality of stirring rods disposed on the stirring shaft; characterized in that: The mixing cylinder is also provided with multiple shells on its outer circumference. Each shell has a vertical plate inside it. Multiple auxiliary rods are fixed to the side of the vertical plate. The auxiliary rods extend into the mixing cylinder from corresponding auxiliary rod through holes on the mixing cylinder wall. The vertical plate is connected to a telescopic drive mechanism for driving the auxiliary rods to extend into or retract into the mixing cylinder.

2. The magnesia-carbon brick raw material mixing equipment with heatable raw materials according to claim 1, characterized in that: The telescopic drive mechanism includes an electric push rod installed on the side of the outer wall of the housing. The output shaft of the electric push rod is connected to a push block. A force-bearing block fixedly connected to a vertical plate is provided below the push block. An inclined surface is provided on the side of the force-bearing block facing the push block. The push block is slidably connected to the housing through a slide rail. A spring is sleeved on the auxiliary rod. One end of the spring abuts against the vertical plate, and the other end abuts against the outer wall of the mixing cylinder or the internal structure of the housing.

3. The magnesia-carbon brick raw material mixing equipment with heatable raw materials according to claim 1, characterized in that: The telescopic drive mechanism includes an electric actuator two installed on the side of the outer wall of the housing. The output shaft of the electric actuator two is connected to a rack one, and the rack one is slidably connected to the housing via a slide rail two. The housing also has a rack two arranged parallel to the rack one, and the rack two is fixedly connected to a vertical plate. A gear meshes between the rack one and the rack two, and the gear is mounted via a gear mounting bracket, which is fixedly connected to the slide rail two.

4. The magnesia-carbon brick raw material mixing equipment with heatable raw materials according to claim 1, characterized in that: It also includes a heating module, which is one of an electric heating rod, an electromagnetic induction heating coil, or a hot air circulation hood, and is evenly distributed on the outer periphery of the mixing cylinder.

5. The magnesia-carbon brick raw material mixing equipment with heatable raw materials according to claim 1, characterized in that: The stirring rods are arranged in multiple layers on the stirring shaft, with each layer including at least three stirring rods evenly distributed along the circumference, and the stirring rods of adjacent layers are staggered.

6. The magnesia-carbon brick raw material mixing equipment with heatable raw materials according to claim 1, characterized in that: The end shape of the auxiliary rod is paddle-shaped, rake-shaped, or flat-headed.

7. The magnesia-carbon brick raw material mixing equipment with heatable raw materials according to claim 1, characterized in that: Multiple heating modules are provided on the outer circumference of the mixing cylinder; the device also includes a temperature sensor and a controller, the temperature sensor is located on the inner wall of the mixing cylinder, and the controller is electrically connected to the temperature sensor and the heating modules.

Images