High-temperature radiation coating mixing, metering and stirring device for heating furnace

Abstract

This invention relates to the technical field of equipment related to heating furnace modification, and in particular to a quantitative mixing device for high-temperature radiant coatings used in heating furnaces. The main motor drives an elliptical wheel to rotate, and the alternating push rollers at its long and short radius ends cause the movable plate to drive the inner cylinder in a stable up-and-down reciprocating motion along the outer cylinder. This action simultaneously drives the vertical shaft and stirring blades to move up and down while rotating, completely breaking the limitation of traditional stirrers that only rotate in a single plane. More importantly, the striking element at the bottom continuously strikes the bottom of the barrel as the vertical shaft moves up and down. The resulting vibration effectively disrupts the structure of the sediment layer, forcibly dispersing the settled powder and re-injecting it into the mixing flow field. This fundamentally solves the problem of heavy filler deposition, ensuring the uniformity of the coating composition and guaranteeing the quality of subsequent construction.

Description

Technical Field

[0001] This invention relates to the technical field of equipment related to heating furnace modification, specifically to a quantitative mixing device for mixing high-temperature radiant coatings for heating furnaces. Background Technology

[0002] In the application of heating furnaces related to roughing mills, the use of high-emissivity coatings (also known as high-radiation coating technology) on key components such as furnace linings, water beams, and regenerators is an effective energy-saving, consumption-reducing, and equipment protection measure. This technology significantly enhances the heat absorption and radiation capacity of the refractory surface by forming a high-emissivity coating. This not only optimizes the heat transfer efficiency within the furnace, allowing heat to be transferred to the steel billet more evenly and quickly, thus effectively reducing fuel consumption; simultaneously, the dense coating forms a protective barrier, penetrating 2-3 mm into the refractory base layer. With its excellent chemical and mechanical adhesion, it effectively resists chemical corrosion and mechanical erosion, significantly extending the service life of the furnace lining and regenerator. Furthermore, because the coating enhances radiative heat transfer within the furnace and reduces heat conduction to the outside of the furnace, the temperature of the outer surface of the heating furnace is lowered, reducing heat loss and positively impacting production safety. The coating is typically not a single-component solution, but rather a viscous suspension fluid composed of various solid fillers and liquid components, including high-emissivity ceramic powders (such as refractory aggregates), sintering agents, suspending agents, and binders. During settling or storage, the heavier functional fillers and pigment particles will inevitably precipitate and separate. If applied directly without thorough mixing, the coating composition will be uneven, failing to guarantee its high emissivity and energy-saving characteristics. Furthermore, an imbalance in the distribution of binder and filler may negatively impact adhesion and thermal shock resistance. High-speed, uniform dispersion using mixing equipment ensures thorough mixing and stable suspension of all components, guaranteeing good flowability and consistency during spraying. This results in a uniform, robust coating, ensuring that energy-saving and protective effects meet the expected standards.

[0003] In practical applications, existing mixing equipment often has significant limitations. Due to the unidirectional mixing direction, the coating material can only rotate and flow in one direction within the container. This causes heavier fillers and powders to quickly sink to the bottom under gravity, making them difficult to re-stir and participate in the mixing. Simultaneously, viscous coating material tends to rise and clump together along the mixing axis under centrifugal force, resulting in material waste and the possibility of coating material drying and detaching from the shaft and mixing into the material, affecting the uniformity of the coating quality. The existence of these mixing dead zones makes it difficult for the coating to return to a uniform suspension state, directly impacting the subsequent spraying effect. Summary of the Invention

[0004] The purpose of this invention is to provide a high-temperature radiant coating mixing and stirring device for heating furnaces, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a high-temperature radiant coating mixing and quantitative stirring device for a heating furnace, comprising a barrel, and further comprising:

[0006] A discharge port is located at the bottom of the barrel for discharging materials after mixing is completed;

[0007] A valve is connected to the discharge port to control the opening and closing of the discharge port;

[0008] The movable stirring mechanism is entirely located inside the barrel body, and has a forked design at the bottom;

[0009] A movable mechanism is used to provide movement space for the movable stirring mechanism;

[0010] A multi-power mechanism, located at the top of the barrel, provides power for the reciprocating motion of the movable stirring mechanism;

[0011] A cover, bolted to the top of the barrel, houses the components of the multiple power mechanism.

[0012] Preferably, the movable stirring mechanism includes a vertical shaft, stirring blades, and a striking element. The vertical shaft and stirring blades are fixed to each other, and the striking element is located at the bottom end of the vertical shaft and has a forked design.

[0013] Preferably, the striking element consists of a main rod, connecting rods, and an impact block. The main rod is welded to the bottom end of the vertical shaft. There are three sets of connecting rods, which are welded to the main rod. The impact block is welded to the end of the connecting rod, and the three sets of connecting rods branch in different directions.

[0014] Preferably, the movable mechanism includes an inner cylinder and an outer cylinder, the outer cylinder is disposed through the top of the barrel, the inner cylinder is slidably connected to the inner wall of the outer cylinder, the upper half of the vertical shaft is fixed to the inner cylinder by bearings, and the cooperation between the inner cylinder and the outer cylinder enables the vertical shaft to move up and down.

[0015] Preferably, the outer surface of the inner cylinder is further welded with ribs, and the inner wall of the outer cylinder is provided with vertical grooves that are slidably connected to the surface of the ribs, so as to prevent the inner walls of the inner cylinder and the outer cylinder from rotating.

[0016] Preferably, the multiple power mechanism comprises a reciprocating drive assembly and a forward / reverse alternating drive assembly, wherein the reciprocating drive assembly includes:

[0017] A movable plate is fitted and fixed to the surface of the inner cylinder;

[0018] The rollers are in four sets and are respectively bolted to both sides of the movable plate;

[0019] The transmission rods, which consist of two sets, are fixed to the top of the barrel body via bearing seats, enabling them to rotate.

[0020] Two sets of elliptical wheels are respectively bolted to both sides of the surface of the transmission rod, and the rollers and elliptical wheels are in contact with each other;

[0021] The main motor is bolted inside the housing and is used to provide power to the transmission rod;

[0022] The first gear set, consisting of gears, transmits the power from the output shaft of the main motor to the transmission rod.

[0023] Preferably, the first gear set consists of three spur gears of the same size that mesh with each other, and is fixed to the transmission rod and the output shaft of the main motor, respectively.

[0024] Preferably, the alternating forward and reverse drive component includes:

[0025] A fixing plate is bolted to the inner wall of the cover.

[0026] A vertical plate, which is bolted to the top of the movable plate;

[0027] The rack is bolted to the vertical plate;

[0028] A rotating rod passes through the vertical plate and is rotatably connected to it at the point of penetration.

[0029] A transmission gear is bolted to the end of the rotating rod and meshes with the rack;

[0030] The second gear set uses the up-and-down movement of the movable plate to drive the vertical shaft to alternately rotate forward and backward.

[0031] Preferably, the second gear set is composed of two sets of meshing bevel gears, and the two bevel gears are respectively fixed to the vertical shaft and the rotating rod.

[0032] Preferably, the impact block is spherical in shape.

[0033] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0034] 1. In this invention, the main motor drives the elliptical wheel to rotate. The alternating push of the rollers at its long and short radius ends causes the movable plate to drive the inner cylinder in a stable up-and-down reciprocating motion along the outer cylinder. This action simultaneously drives the vertical shaft and stirring blades to move up and down while rotating, completely breaking the limitation of traditional mixers that only rotate in a single plane. More importantly, the striking element at the bottom continuously strikes the bottom of the barrel as the vertical shaft moves up and down. The resulting vibration effectively disrupts the structure of the sediment layer, forcibly dispersing the settled powder and re-injecting it into the stirring flow field. This fundamentally solves the problem of heavy filler deposition, ensuring the uniformity of the coating composition and guaranteeing the quality of subsequent construction.

[0035] 2. In this invention, while the movable plate reciprocates up and down, the vertical plate fixed to it drives the transmission gear to travel on the fixed rack. This motion is converted into the reciprocating rotation of the rotating rod, and then transmitted to the vertical shaft through the second gear set. This causes the stirring blade to continuously alternate between forward and reverse rotation during the lifting and lowering process. This variable stirring direction can destroy the tendency of the coating to climb the rod due to unidirectional centrifugal force, so that the material forms a disordered and multidirectional flow in the barrel. This eliminates the dead corners commonly found in traditional mixing equipment. The material is continuously sheared, folded and turned over in the barrel, which not only improves the uniformity and efficiency of mixing, but also greatly reduces the adhesion and waste of coating on the shaft surface, ensuring the accuracy of coating ratio.

[0036] 3. In the mixing process, the repeated tapping of the bottom of the bucket by the striking component not only helps to mix the raw materials, but also generates high-frequency micro-vibrations at the bottom of the bucket when the valve is opened for discharge after mixing. This effectively breaks the adhesion and static friction between the coating and the bucket wall, promotes the aggregation of viscous coating towards the discharge port, significantly speeds up the discharge and reduces residue in the bucket. This optimized design of the entire process from mixing to discharge not only improves the quality of the coating preparation, but also improves the smoothness of the operation process, reduces cleaning difficulty and material loss, and comprehensively improves the preparation efficiency and construction economy of high-temperature radiation coatings for heating furnaces. Attached Figure Description

[0037] Figure 1 This is a schematic diagram of the structure in this invention;

[0038] Figure 2 This is a schematic cross-sectional view of the barrel body in this invention;

[0039] Figure 3 This is a partial structural diagram of the present invention;

[0040] Figure 4 This is a schematic diagram of the movable stirring mechanism in this invention;

[0041] Figure 5This is a schematic diagram of the forward and reverse alternating drive component in this invention;

[0042] Figure 6 This is a partial structural diagram of the reciprocating drive component in this invention;

[0043] Figure 7 This is a schematic diagram of the inner cylinder structure in this invention;

[0044] Figure 8 This is a schematic diagram of the outer cylinder in this invention.

[0045] In the diagram: 100, barrel body; 200, discharge port; 300, valve; 400, cover; 500, movable stirring mechanism; 510, vertical shaft; 520, stirring blade; 530, striking component; 531, main rod; 532, connecting rod; 533, impact block; 600, movable mechanism; 610, inner cylinder; 611, rib; 620, outer cylinder; 621, vertical groove; 700, multiple power mechanism; 710, reciprocating drive assembly; 711, main motor; 712, transmission rod; 713, elliptical wheel; 714, movable plate; 715, roller; 716, first gear set; 720, alternating forward and reverse drive assembly; 721, fixed plate; 722, rack; 723, vertical plate; 724, transmission gear; 725, rotating rod; 726, second gear set. Detailed Implementation

[0046] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0047] Please see Figures 1-8 A quantitative mixing device for high-temperature radiant coatings used in heating furnaces includes a barrel 100, a discharge port 200, a valve 300, a movable mixing mechanism 500, a movable mechanism 600, a multi-power mechanism 700, and a cover 400. The discharge port 200 is located at the bottom of the barrel 100 for discharging materials after mixing. The valve 300 is connected to the discharge port 200 to control its opening and closing. The movable mixing mechanism 500 is entirely located inside the barrel 100 and has a forked design at the bottom. The movable mechanism 600 provides movement space for the movable mixing mechanism 500. The multi-power mechanism 700 is located at the top of the barrel 100 and provides reciprocating power to the movable mixing mechanism 500. The cover 400 is bolted to the top of the barrel 100 and houses the components of the multi-power mechanism 700.

[0048] Specifically, the movable stirring mechanism 500 includes a vertical shaft 510, stirring blades 520, and an impact member 530. The vertical shaft 510 and stirring blades 520 are fixed to each other. The impact member 530 is located at the bottom end of the vertical shaft 510 and has a forked design. The impact member 530 consists of a main rod 531, a connecting rod 532, and an impact block 533. The main rod 531 is welded to the bottom end of the vertical shaft 510. There are three sets of connecting rods 532, which are welded to the main rod 531. The impact block 533 is welded to the end of the connecting rod 532, and the three sets of connecting rods 532 fork in different directions. The impact block 533 has a spherical design and is a metal ball.

[0049] Furthermore, the moving mechanism 600 includes an inner cylinder 610 and an outer cylinder 620. The outer cylinder 620 is disposed through the top of the barrel body 100. The inner cylinder 610 and the inner wall of the outer cylinder 620 are slidably connected. The upper part of the vertical shaft 510 is fixed to the inner cylinder 610 by bearings. The cooperation between the inner cylinder 610 and the outer cylinder 620 enables the vertical shaft 510 to move up and down. The outer surface of the inner cylinder 610 is also welded with a rib 611. The inner wall of the outer cylinder 620 is provided with a vertical groove 621 that is slidably connected to the surface of the rib 611. The inner cylinder 610 slides through the rib 611 and the inner wall of the vertical groove 621 to prevent the inner cylinder 610 and the inner wall of the outer cylinder 620 from rotating.

[0050] Furthermore, the multi-power mechanism 700 consists of a reciprocating drive assembly 710 and a forward / reverse alternating drive assembly 720. The reciprocating drive assembly 710 includes a movable plate 714, rollers 715, transmission rods 712, elliptical wheels 713, a main motor 711, and a first gear set 716. The movable plate 714 is sleeved and fixed to the surface of the inner cylinder 610, and the movable plate 714 and the inner cylinder 610 are mutually fixed. There are four sets of rollers 715, which are respectively bolted to both sides of the movable plate 714. There are two sets of transmission rods 712, which are fixed to the top of the barrel 100 through bearing seats, so that they have... The system is designed for rotation. Two sets of elliptical wheels 713 are bolted to both sides of the surface of the transmission rod 712, and rollers 715 are in contact with the elliptical wheels 713. The main motor 711 is bolted inside the housing 400 to provide power to the transmission rod 712. The first gear set 716 transmits the power from the output shaft of the main motor 711 to the transmission rod 712. The first gear set 716 consists of three spur gears of the same size that mesh with each other, and is fixed to the output shafts of the transmission rod 712 and the main motor 711, respectively, to ensure that the rotational speeds of the two sets of transmission rods 712 are consistent.

[0051] During operation, paint is first poured into the tank 100, then the main motor 711 is turned on. The output shaft of the main motor 711 drives the transmission rods 712 on both sides to rotate via the first gear set 716. The elliptical wheel 713 on the surface of the transmission rod 712 rotates, and the long radius end and short radius end of the elliptical wheel 713 alternately contact the roller 715. Based on the contour characteristics of the elliptical wheel 713, this contact change converts the rotational motion into linear reciprocating motion, thereby causing the roller 715 to reciprocate up and down. The reciprocating motion of the roller 715 synchronously drives the movable plate 714 connected to it and the inner cylinder 610 fixed on the movable plate 714 to repeatedly rise and fall. The rising and falling of the inner cylinder 610 further drives the vertical shaft 510 and the stirring blade 520 installed on the vertical shaft 510 to achieve up and down reciprocating motion, thereby vertically agitating and stirring the paint at different heights inside the tank 100. Meanwhile, the movable stirring mechanism 500 located below, including the main rod 531, connecting rod 532, and impact block 533, also reciprocates up and down under the drive of the movable plate 714. The impact block 533 repeatedly and regularly strikes the bottom of the barrel 100 with this movement, generating vibration, thereby resuspending the raw materials that have settled at the bottom and allowing them to participate evenly in the mixing process.

[0052] The alternating forward and reverse drive assembly 720 includes a fixed plate 721, a vertical plate 723, a rack 722, and a rotating rod 725. The fixed plate 721 is bolted to the inner wall of the cover 400. The vertical plate 723 is bolted to the top of the movable plate 714. The rack 722 is bolted to the vertical plate 723. The rotating rod 725 passes through the vertical plate 723 and is rotatably connected to it. The transmission gear 724 is bolted to the end of the rotating rod 725 and meshes with the rack 722. The second gear set 726 drives the vertical shaft 510 to alternate forward and reverse rotation by the up and down movement of the movable plate 714. The second gear set 726 is composed of two sets of meshing bevel gears. The two bevel gears are the same size and are fixed to the vertical shaft 510 and the rotating rod 725, respectively.

[0053] While the movable plate 714 reciprocates up and down, the vertical plate 723 fixedly connected to it drives the rotating rod 725 and the transmission gear 724 installed at the end of the rotating rod 725 to reciprocate vertically. The transmission gear 724 meshes with the fixed rack 722. Therefore, during the up and down movement, the transmission gear 724 rolls along the surface of the rack 722, thereby converting the linear reciprocating motion into rotational motion, driving the rotating rod 725 to rotate alternately in the forward and reverse directions. This rotational power is transmitted to the vertical shaft 510 through the second gear set 726, which ultimately drives the stirring blade 520 to rotate alternately in the forward and reverse directions, realizing bidirectional and efficient stirring of the coating. After the stirring operation is completed, the valve 300 set at the bottom of the barrel 100 is opened to discharge the material. During the discharge process, the impact block 533 continuously knocks on the bottom of the barrel 100. The resulting vibration helps to prevent the coating from clogging at the outlet or adhering to the barrel wall, thereby ensuring smooth discharge.

[0054] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0055] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A quantitative mixing device for high-temperature radiant coatings used in heating furnaces, comprising a tank body, characterized in that, Also includes: A discharge port is located at the bottom of the barrel for discharging materials after mixing is completed; A valve is connected to the discharge port to control the opening and closing of the discharge port; A movable stirring mechanism is integrally housed inside the barrel body and features a forked design at the bottom. The movable stirring mechanism includes a vertical shaft, stirring blades, and striking components. The vertical shaft and stirring blades are fixed to each other. The striking components are located at the bottom of the vertical shaft and have a forked design. The striking components consist of a main rod, connecting rods, and impact blocks. The main rod is welded to the bottom of the vertical shaft. There are three sets of connecting rods, which are welded to the main rod. The impact blocks are welded to the ends of the connecting rods, and the three sets of connecting rods fork in different directions. An active mechanism is provided to provide movement space for the movable stirring mechanism. The active mechanism includes an inner cylinder and an outer cylinder. The outer cylinder is disposed through the top of the barrel. The inner cylinder and the inner wall of the outer cylinder are slidably connected. The upper half of the vertical shaft is fixed to the inner cylinder by bearings. The cooperation between the inner cylinder and the outer cylinder enables the vertical shaft to move up and down. A multi-power mechanism, located at the top of the barrel, provides reciprocating motion power to the movable stirring mechanism. This multi-power mechanism consists of an up-and-down reciprocating drive assembly and a forward-and-reverse alternating drive assembly. The up-and-down reciprocating drive assembly includes a movable plate, rollers, transmission rods, elliptical wheels, a main motor, a first gear set, and a cover. The movable plate is fitted and fixed to the surface of the inner cylinder. Four sets of rollers are respectively bolted to both sides of the movable plate. Two sets of transmission rods are fixed to the top of the barrel via bearing seats, enabling them to rotate. Two sets of elliptical wheels are respectively bolted to both sides of the transmission rod surface, with the rollers and elliptical wheels in contact with each other. The main motor is bolted to the cover. Inside, power is supplied to the transmission rod. The first gear set, composed of gears, transmits the power from the main motor output shaft to the transmission rod. The cover is bolted to the top of the barrel and houses the components of the multiple power mechanism. The alternating forward and reverse drive assembly includes a fixed plate, a vertical plate, a rack, a rotating rod, a transmission gear, and a second gear set. The fixed plate is bolted to the inner wall of the cover. The vertical plate is bolted to the top of the movable plate. The rack is bolted to the vertical plate. The rotating rod passes through the vertical plate and is rotatably connected to its penetration point. The transmission gear is bolted to the end of the rotating rod and meshes with the rack. The second gear set uses the up-and-down movement of the movable plate to drive the vertical shaft to alternately rotate forward and reverse.

2. The high-temperature radiant coating mixing and quantitative stirring device for a heating furnace according to claim 1, characterized in that: The outer surface of the inner cylinder is also welded with ribs, and the inner wall of the outer cylinder is provided with vertical grooves that are slidably connected to the surface of the ribs to prevent the inner cylinder and the inner wall of the outer cylinder from rotating.

3. The high-temperature radiant coating mixing and quantitative stirring device for a heating furnace according to claim 1, characterized in that: The first gear set consists of three spur gears of the same size that mesh with each other, and is fixed to the transmission rod and the output shaft of the main motor, respectively.

4. The high-temperature radiant coating mixing and quantitative stirring device for a heating furnace according to claim 1, characterized in that: The second gear set consists of two sets of meshing bevel gears, and the two bevel gears are fixed to the vertical shaft and the rotating rod, respectively.

5. The high-temperature radiant coating mixing and quantitative stirring device for a heating furnace according to claim 1, characterized in that: The impact block is spherical in shape.

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