Fireproof coating drying device

Abstract

The invention relates to the field of fireproof coating drying, in particular to a fireproof coating drying device which comprises a drying box arranged on two guide rails in a crossing mode, and the drying box can move in the length direction of the guide rails. A material to be dried is placed between the two guide rails; a plurality of air supply fans are arranged at the upper end of the drying box; the drying box is matched with the air supply fan to dry the fireproof coating on the surface of each material one by one, drying is conducted through dry hot air flow, the problem that the fireproof coating is rapidly dried and cracked can be avoided, meanwhile, the fireproof coating drying device is simple in structure, convenient to operate, independent of weather and capable of conducting drying operation at any time, and the drying efficiency is improved. And the fireproof coating drying device can be assembled on a building construction site, can be directly put into construction after the fireproof coating on the surface of the material is dried, is more convenient and flexible, avoids the trouble of secondary transportation, saves the cost, and is beneficial to improving the building construction efficiency.

Description

Technical Field

[0001] This invention relates to the field of fire-retardant coating drying, specifically a fire-retardant coating drying apparatus. Background Technology

[0002] Fire-retardant coatings are special functional coatings applied to the surface of objects that can effectively delay or prevent the spread of fire. They form a protective layer in a fire through physical or chemical action, buying valuable fire-resistant time for the coated object and thus reducing fire losses.

[0003] Existing fire-retardant coatings are generally divided into two types: intumescent fire-retardant coatings and non-intumescent fire-retardant coatings. When heated to high temperatures, intumescent fire-retardant coatings expand and foam, forming a porous carbonized layer that blocks heat transfer to materials. At the same time, they release inert gases such as CO2 and NH, dilute oxygen, and absorb a large amount of heat through the decomposition of the coating components. Non-intumescent fire-retardant coatings rely on materials such as vermiculite and perlite to form a dense heat-insulating layer. The coating also contains aluminum hydroxide and magnesium hydroxide, which lower the temperature through a dehydration reaction to achieve a fire-retardant effect. They are currently used in many fields, such as spraying on the surface of steel structures in buildings or the surface of wooden materials in ancient buildings.

[0004] Whether it's intumescent or non-intumescent fire-retardant coatings, they are all mixed into a liquid state, then sprayed onto the surface of materials, and solidified on the surface through drying. Currently, after the fire-retardant coatings are sprayed onto the material surface, the specific drying methods are generally air drying or open flame baking. Natural air drying is greatly affected by the weather and has a lot of uncertainty, which will affect the delivery time of the materials. Open flame baking requires professional and skilled technicians to operate. Improper operation can lead to problems such as drying cracking or uneven drying, which directly affects the fire-retardant performance of the materials in the later stage.

[0005] Therefore, a fire-retardant coating drying device is proposed to address the above problems. Summary of the Invention

[0006] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0007] The technical solution adopted by the present invention to solve its technical problem is: the fireproof coating drying device of the present invention includes a drying box that is arranged across two guide rails, and the drying box can move along the length of the guide rails; The material to be dried is placed between two guide rails and at the bottom of the drying chamber; The upper part of the drying box is equipped with multiple air supply fans. The air inlet of the air supply fan is connected to the air supply pipe, which is connected to an external airflow dryer. The airflow dryer continuously provides the air supply fans with dry and hot airflow. The drying chamber has baffles on both sides that are rotatably mounted to prevent the outflow of hot air from inside the drying chamber.

[0008] Preferably, a groove is provided on the inner side of the guide rail, the groove is provided along the length of the guide rail, a material plate is provided in the groove, multiple wheels are rotatably connected to both sides of the material plate, the wheels are rolled in the groove, and multiple support beams are provided on the upper surface of the material plate, all of which are arranged along the length of the material plate, and the material to be dried is placed perpendicular to the support beams.

[0009] Preferably, a drive assembly for moving the drying chamber is provided on both sides of the guide rail. The drive assembly includes a lead screw that passes through both ends of the drying chamber. The end of the lead screw is rotatably connected to the end of the guide rail and fixed to an external drive motor.

[0010] Preferably, the drying oven includes an outer shell and an inner shell, and a lifting assembly is provided between the outer shell and the inner shell; The lifting assembly includes screws disposed at both ends inside the housing, and the screws are threadedly connected to the side walls at both ends of the outer shell. The upper surface of the outer shell has a rectangular opening, the upper half of the inner shell can move up and down along the rectangular opening, multiple air supply fans are provided on the upper surface of the inner shell, and the lower port of the inner shell is used to cover the material to be dried.

[0011] Preferably, a first guide plate is symmetrically arranged on the two side walls of the inner shell, and one edge of each first guide plate is rotatably connected to the inner side wall of the inner shell, and a torsion spring is provided at the rotatable connection point between the first guide plate and the inner shell. Multiple limiting plates are provided on the surface of the first guide plate opposite to the inner shell sidewall. The limiting plates are used to create a gap between the first guide plate and the inner shell sidewall.

[0012] Preferably, two guide plates are symmetrically arranged on the two side walls of the inner shell. The two guide plates are both located below the first guide plate. One edge of each second guide plate is rotatably connected to the inner side wall of the inner shell, and the other edge of each second guide plate is rotatably connected to a push-pull rod. The end of the push-pull rod is rotatably connected to the first guide plate.

[0013] Preferably, two flow dividers are symmetrically arranged at the top of the inner shell, both flow dividers are arranged along the length of the inner shell, and the two flow dividers are arranged in an "eight" shape.

[0014] Preferably, gears are symmetrically arranged at both ends of the outer shell, the gears are fixed to the ends of the rotating shaft of the baffle, the gears are externally meshed with a rack, and the upper end of the rack is fixed to the upper end face of the inner shell through a crossbeam.

[0015] Preferably, each rack has a strip-shaped sliding hole along the length of the rack, and a reinforcing rod is provided in the sliding hole of two adjacent racks. The end of the reinforcing rod is slidably connected in the sliding hole, and the middle position of the reinforcing rod is fixed to the outer wall of the outer shell.

[0016] Preferably, the upper surface of the housing is provided with a touch switch for controlling the start and stop of the air supply fan. The touch switch is located on one side of the rectangular opening, and a telescopic squeezing rod is provided above each touch switch. The end of each telescopic squeezing rod is fixed to the housing of the air supply fan.

[0017] The advantages of this invention are: 1. In this invention, the drying box, in conjunction with an air supply fan, dries the fire-retardant coating on the surface of each material one by one. Drying is achieved through a hot airflow, which avoids the problem of rapid drying and cracking of the fire-retardant coating. Furthermore, this fire-retardant coating drying device has a simple structure, is easy to operate, and is not dependent on weather conditions, allowing for drying operations at any time. Moreover, this fire-retardant coating drying device can be installed on construction sites, and once the fire-retardant coating on the material surface is dry, it can be directly put into construction use, making it more convenient and flexible, avoiding the hassle of secondary transportation, saving costs, and helping to improve construction efficiency.

[0018] 2. In this invention, the material plate is set up in conjunction with the drying box. The material is pre-loaded and loaded onto the material plate to prepare the material coated with fire retardant paint, saving time and improving efficiency. At the same time, the prepared material can be preliminarily dried in a natural environment, and there is enough time to arrange the material neatly and check the fire retardant paint spraying condition on the material surface. Attached Figure Description

[0019] Figure 1 This is a perspective view of the fire-retardant coating drying device of the present invention; Figure 2 This is a schematic diagram of the external shape of the drying oven in this invention; Figure 3 This is a front view of the drying oven frame structure in this invention; Figure 4 This is a three-dimensional schematic diagram of the drying oven frame structure in this invention; Figure 5 This is a top view of the fire-retardant coating drying device of the present invention; Figure 6 This is a perspective view of the material plate in this invention; Figure 7 This is a first-view perspective perspective view of the drying oven in this invention; Figure 8 This is a second-view perspective perspective view of the drying oven in this invention; Figure 9 This is a front view of the drying oven in this invention; Figure 10 This is a cross-sectional view of the drying oven in this invention; Figure 11 This is a cross-sectional view of the outer casing in this invention; Figure 12 This is a perspective view of the outer casing in this invention; Figure 13 This is a perspective view of the inner shell in this invention; Figure 14 This is a perspective view of the cooperation between the No. 1 guide plate and the No. 2 guide plate in this invention.

[0020] In the diagram: 101. Material; 1. Drying oven; 2. Guide rail; 3. Air supply fan; 4. Recess; 5. Baffle; 6. Material plate; 7. Wheel; 8. Support beam; 9. Lead screw; 10. Outer shell; 11. Inner shell; 12. Screw; 13. Rectangular opening; 14. First guide plate; 15. Limiting plate; 16. Second guide plate; 17. Push-pull rod; 18. Diverter plate; 19. Gear; 20. Rack; 21. Sliding hole; 22. Reinforcing rod; 23. Touch switch; 24. Telescopic extrusion rod; 25. Secondary guide rail. Detailed Implementation

[0021] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0022] Reference Figures 1-8 A fire-retardant coating drying device includes a drying chamber 1 mounted on a guide rail 2, the drying chamber 1 spanning the guide rail 2, with the material 101 to be dried placed in the middle of the guide rail 2; multiple air supply fans 3 are installed at the upper end of the drying chamber 1 to inject external hot air into the drying chamber 1; baffles 5 are rotatably mounted on both sides of the drying chamber 1. Specifically, in implementation, recesses 4 are opened on both sides of the drying chamber 1, and baffles 5 are installed in the recesses 4. A rotating shaft on the upper edge of the baffle 5 is rotatably connected to the recess 4, so that the baffles 5 are rotatably mounted on both sides of the drying chamber 1. When the baffles 5 are in a vertical state, they are used to block the recesses 4 on both sides of the drying chamber 1, reducing the outflow of hot air from the drying chamber 1; when the baffles 5 are in an open state, that is, when the baffles 5 are flipped outwards to both sides of the drying chamber 1, the drying chamber 1 is opened to facilitate the entry and exit of the material 101.

[0023] Furthermore, a detailed description will be provided in conjunction with specific embodiments. Figure 3 and Figure 4 The thick black line represents the steel frame structure of the drying oven 1. Figure 3 and Figure 4 The thin line represents the angle steel support structure in the drying oven 1, taking the drying oven 1 as an example with an overall length of 5 meters, a height of 1.2 meters, and a width of 1 meter; Figure 3 and Figure 4 This is a frame structure diagram of drying oven 1. During implementation, the external shape of drying oven 1 is as follows: Figure 2As shown, rollers adapted to guide rails 2 are provided on both sides of the bottom of the drying box 1, so that the drying box 1 can move along the length of the guide rails 2. Multiple air supply fans 3 are provided on the top of the drying box 1. The air inlet of each air supply fan 3 is connected to an air supply pipe, which is connected to an external airflow dryer. The airflow dryer continuously provides dry and hot airflow to the air supply fans 3, and the airflow dryer can adjust the temperature of the airflow, so that a suitable temperature can be flexibly injected into the drying box 1 under different weather conditions. In the above embodiment, material 101 can specifically be an I-beam. First, fire-retardant coating is sprayed onto the surface of material 101. When the fire-retardant coating is wet but not dripping, it is then fed between two guide rails 2 and dried in a drying oven 1.

[0024] The specific operation of this fire-retardant coating drying device is as follows: For feeding, first move the drying box 1 to one end of the guide rail 2, then place the material 101 between the two guide rails 2, placing the material 101 perpendicular to the length direction of the guide rail 2, with the same distance between adjacent materials 101. Drying: Open the baffles 5 on both sides of the drying box 1 and flip them outwards. Then move the drying box 1. When the drying box 1 moves above the first material 101, release the baffles 5. Under its own weight, the baffles 5 flip downwards and reset, covering the material 101 inside the drying box 1. Then drive the air supply fan 3 to blow dry hot air into the drying box 1. The hot air fills the entire interior of the drying box 1 and fully contacts the fireproof coating on the surface of the material 101, so as to achieve uniform drying and evaporation of moisture in the fireproof coating. After the material 101 is dried, the baffle 5 is flipped outwards to both sides of the drying box 1 again. Then, the drying box 1 is pushed to move above the next material 101. The baffle 5 is released and flipped back down under its own weight, covering the material 101 inside the drying box 1. Then, the air supply fan 3 is driven to blow the dry hot air into the drying box 1. The dry hot air blows onto the surface of the material 101 to dry the fireproof coating. The above actions can be repeated. After the drying process of the fireproof coating on the surface of the previous material 101 is completed, wait for its temperature to drop, then move it to unload it, and then place the new material 101 to be dried. The drying chamber 1, in conjunction with the air supply fan 3, dries the fire retardant coating on the surface of each material 101 one by one. The drying is carried out by a hot airflow, which can avoid the problem of rapid drying and cracking of the fire retardant coating. At the same time, the fire retardant coating drying device has a simple structure, is easy to operate, and is not dependent on the weather, so it can be operated at any time. Furthermore, the fire retardant coating drying device can be installed on the construction site. After the fire retardant coating on the surface of the material 101 is dried, it can be put into construction directly, which is more convenient and flexible, avoids the trouble of secondary transportation, saves costs, and helps to improve the efficiency of construction. When designing the drying box 1, it was also considered that the drying box 1 could dry multiple materials 101 at one time. That is, the drying box 1 was designed with a wide structural box that could cover multiple materials 101 at one time. Although this structural box can speed up the processing efficiency of materials 101, it will be compromised in some aspects. For example, in terms of heat resources, a wider structural box requires a larger amount of heat resources to be injected at once, and it also needs to be maintained for a long time to reach the preset drying temperature of the fireproof coating. Furthermore, the efficiency of heat exchange between the structural box and the external environment will also increase, resulting in a significant increase in the waste of heat resources. For example, in terms of ease of processing, a wider structural box requires more space to be laid out and is not flexible enough to operate. In this embodiment, the fireproof coating drying device is more suitable for operation on the construction site. It is smaller in weight, more flexible and convenient to operate, and can be put into use directly after the fireproof coating on the surface of material 101 is dried, reducing intermediate transportation links and avoiding damage to the fireproof coating on the surface of material 101.

[0025] Reference Figures 1-8 The guide rail 2 has a sliding groove on its inner side, which is opened along the length of the guide rail 2. A material plate 6 is provided in the sliding groove. Multiple wheels 7 are rotatably connected to both sides of the material plate 6. The wheels 7 are rolled in the sliding groove. Multiple support beams 8 are provided on the upper surface of the material plate 6. The support beams 8 are all arranged along the length of the material plate 6, and the material 101 to be dried is placed perpendicular to the support beams 8. Both ends of the guide rail 2 are provided with secondary guide rails 25, which are used to support the movement of the material plate 6; in this embodiment, the material plate 6 is divided into two areas in half, such as Figure 5As shown, the left half of the material plate 6 can be divided into a loading and unloading area, and the right half into a drying area. In the drying area, the drying chamber 1, in conjunction with the air supply fan 3, dries the fire-retardant coating on the surface of each material 101 one by one. When all materials 101 in the drying area are dried, the material plate 6 is moved so that the left half of the loading and unloading area is aligned with the guide rail 2. At this time, the right half of the drying area moves to the right side of the guide rail 2. The drying chamber 1, in conjunction with the air supply fan 3, performs the drying operation on the materials 101 on the left half of the material plate 6, while the materials on the right half of the material plate 6 are already dried. The completed material 101 is unloaded. After unloading, new materials 101 to be dried are placed on it one by one. At this time, the right half is loaded and the materials 101 are prepared for drying. Pre-preparation saves time and improves efficiency. At the same time, the materials 101 prepared on the right can be initially dried in natural environment, and there is enough time to arrange the materials 101 neatly and check the fireproof coating spraying condition on the surface of the materials 101. Similarly, when the left half of the material plate 6 moves to the left side of the guide rail 2, unloading and loading are carried out in sequence to prepare the materials 101.

[0026] Reference Figures 1-13 The guide rail 2 is provided on both sides with a drive assembly for moving the drying box 1. The drive assembly includes a lead screw 9, which passes through both ends of the drying box 1. The end of the lead screw 9 is rotatably connected to the end of the guide rail 2 and fixed to an external drive motor. The drying chamber 1 moves on the guide rail 2, and each movement of the drying chamber 1 affects the interval between the drying chamber 1 and each material 101. When the drying chamber 1 moves to the middle position above each material 101, the two side plates of the drying chamber 1 are symmetrically distributed on both sides of the material 101, and the airflow will flow evenly along the surface of the material 101, which can fully dry the fireproof coating on the surface of the material 101. For this purpose, a drive component that can accurately control the movement of the drying chamber 1 is set up, namely the lead screw 9 in conjunction with an external drive motor. The drive motor can intermittently drive the lead screw 9 to rotate forward or reverse. For example, when the drive motor drives the lead screw 9 to rotate forward, the drying chamber 1 can move from the left end position of the guide rail 2 to its right end position. When the drive motor drives the lead screw 9 to rotate in reverse, the drying chamber 1 can move from the right end position of the guide rail 2 to its left end position. The drive motor precisely drives the lead screw 9 to rotate a certain number of revolutions, so that the drying chamber 1 can be accurately moved to the position directly above each material 101. The two baffles 5 can be symmetrically distributed on both sides of the material 101, so that the airflow can flow evenly along the surface of the material 101, improving the uniformity of drying of the fireproof coating on the surface of the material 101.

[0027] Reference Figures 1-13 The drying oven 1 includes an outer shell 10 and an inner shell 11, and a lifting assembly is provided between the outer shell 10 and the inner shell 11; The lifting assembly includes screws 12 disposed at both ends inside the outer shell 10, and the screws 12 are threadedly connected to the side walls at both ends of the outer shell 11. The outer shell 10 has a rectangular opening 13 on its upper surface. The upper part of the inner shell 11 can move up and down along the rectangular opening 13. Multiple air supply fans 3 are provided on the upper surface of the inner shell 11. The lower port of the inner shell 11 is used to cover the material 101 to be dried. The drying chamber 1 is configured with an inner and outer shell. The inner shell 11 is used to cover the material 101, while the outer shell 10 is used for heat preservation, reducing the efficiency of heat exchange between the inside of the drying chamber 1 and the outside, and reducing the waste of hot air resources. Specifically, the drying chamber 1 is moved to the middle position above the material 101, the baffle 5 is released, and then the screw 12 is driven to rotate. In this embodiment, the screw 12 can be driven to rotate by an external motor. The motor can drive the screw 12 to rotate forward and reverse. When the motor drives the screw 12 to rotate forward, the screw 12 drives the inner shell 11 to move down, and the inner shell 11 covers the material 101. Then the air supply fan 3 is driven, and the airflow is injected into the inner shell 11 to dry the fireproof coating on the surface of the material 101.

[0028] Reference Figures 1-14 A first guide plate 14 is symmetrically arranged on the two side walls of the inner shell 11. One edge of each first guide plate 14 is rotatably connected to the inner side wall of the inner shell 11, and a torsion spring is provided at the rotatable connection point between the first guide plate 14 and the inner shell 11. Multiple limiting plates 15 are provided on the surface of the first guide plate 14 opposite to the side wall of the inner shell 11. The limiting plates 15 are used to create a gap between the first guide plate 14 and the side wall of the inner shell 11. Similar to the uneven surface of material 101, when hot airflow impacts downwards, the hot airflow fails to effectively contact the sidewall of material 101. Therefore, a guide plate 14 is provided to guide the hot airflow to impact the sidewall of material 101. The end of the guide plate 14 is rotatably connected to the end face of the inner shell 11 via a torsion spring. In its initial state, the guide plate 14 is pressed against the inner sidewall of the inner shell 11 by a limiting plate 15. When hot airflow is injected into the inner shell 11, the hot airflow flows along the sidewall of the inner shell 11 and impacts the gap between the guide plate 14 and the sidewall of the inner shell 11, causing the guide plate 14 to deflect. Figure 5 As shown, the hot airflow flows along the upper surface of the first guide plate 14, and the hot airflow impacts the side wall of the material 101, drying the fireproof coating on the uneven surface of the side wall of the material 101; when the air supply fan 3 stops running, the first guide plate 14 rotates and resets under the torque of the torsion spring connected to it. At this time, space is made up inside the inner shell 11. When the inner shell 11 moves upward, the first guide plate 14 is prevented from moving upward with the inner shell 11 and scraping or interfering with the material 101.

[0029] Reference Figures 1-14The inner shell 11 has two symmetrical guide plates 16 on its two inner side walls. The two guide plates 16 are both located below the first guide plate 14. One edge of each second guide plate 16 is rotatably connected to the inner side wall of the inner shell 11, and the other edge of each second guide plate 16 is rotatably connected to a push-pull rod 17. The end of the push-pull rod 17 is rotatably connected to the first guide plate 14. The second guide vane 16 is connected to the first guide vane 14 via a push-pull rod 17, and unfolds when the first guide vane 14 unfolds, as shown below. Figure 10 As shown, the hot airflow flows along the first guide plate 14 and then along the surface of the second guide plate 16, guiding the hot airflow to the area below the material 101. The material 101 is supported on the material plate 6 by the support beam 8, and there is a gap between the lower surface of the material 101 and the material plate 6. At this time, the hot airflow flowing along the second guide plate 16 flows into the gap and dries the fireproof coating on the bottom of the material 101, thus drying the fireproof coating on the surface of the material 101 from all directions.

[0030] Reference Figures 1-14 Two diversion plates 18 are symmetrically arranged at the top of the inner shell 11. The diversion plates 18 are arranged along the length of the inner shell 11, and the two diversion plates 18 are arranged in an "eight" shape. The flow divider 18 inside the inner shell 11 is used to evenly distribute the hot airflow, dividing it into multiple flow paths to prevent the hot airflow from concentrating and impacting the upper surface of the material 101. The fireproof coating on the upper surface of the material 101 dries rapidly and is prone to cracking. The hot airflow diverted to both sides of the inner shell 11 can flow along the side wall of the inner shell 11, and the hot airflow can concentrate and impact the first guide plate 14, opening the first guide plate 14 and the second guide plate 16, so that the hot airflow can come into full contact with the fireproof coating sprayed on the surface of the material 101.

[0031] Reference Figures 1-12 The outer shell 10 has symmetrically arranged gears 19 at both ends. The gears 19 are fixed to the ends of the rotating shaft of the baffle 5. The gears 19 are externally meshed with racks 20. The upper end of the racks 20 is fixed to the upper end face of the inner shell 11 through a crossbeam. The gear 19, in conjunction with the rack 20, is used to drive the rotation of the baffle 5. When the fire-retardant coating on the surface of a certain material 101 has dried, the inner shell 11 is driven to move upward. The inner shell 11 drives the rack 20 to move upward, while the rack 20 rotates the gear 19. The gear 19 deflects through the rotating shaft baffle 5, and then the baffle 5 gradually opens. Then the screw 9 is driven to push the drying chamber 1 to move. When the drying chamber 1 moves above the next material 101, the inner shell 11 is driven to move downward. The inner shell 11 drives the rack 20 to move downward, and the rack 20 drives the gear 19 to rotate. The gear 19 deflects through the rotating shaft baffle 5, and then the baffle 5 gradually closes. At this time, the inner shell 11 covers the material 101, and the two sides of the outer shell 10 are blocked by the baffle 5. The opening and closing of the baffle 5 is driven by the up-and-down movement of the inner shell 11. The linkage design optimizes operation, reduces the chance of manual contact with the fireproof coating drying device, and improves safety.

[0032] Reference Figures 1-12 Each rack 20 has a strip-shaped sliding hole 21, which is opened along the length of the rack 20. A reinforcing rod 22 is provided in the sliding hole 21 of two adjacent racks 20. The end of the reinforcing rod 22 is slidably connected in the sliding hole 21, and the middle position of the reinforcing rod 22 is fixed to the outer wall of the outer shell 10. A reinforcing rod 22 is provided on the outer casing 10 to stabilize the movement of the rack 20. The end of the reinforcing rod 22 slides along the sliding hole 21 on the rack 20 to constrain the swing of the rack 20, so that when the rack 20 moves up and down, the rack 20 can stably mesh with the gear 19 to ensure the stability of force transmission.

[0033] Reference Figures 1-10 The upper surface of the outer casing 10 is provided with a touch switch 23 for controlling the start and stop of the air supply fan 3. The touch switch 23 is located on one side of the rectangular opening 13, and a telescopic squeezing rod 24 is provided above each touch switch 23. The end of each telescopic squeezing rod 24 is fixed to the outer casing 10 of the air supply fan 3. Multiple touch switches 23 are provided on the outer shell 10. Each touch switch 23 controls one air supply fan 3. When the inner shell 11 moves upward, the inner shell 11 drives the telescopic compression rod 24 to move upward. At this time, the lower end of the telescopic compression rod 24 no longer presses the touch switch 23. The touch switch 23 disconnects the power supply to the air supply fan 3, and the air supply fan 3 stops running. When the inner shell 11 moves down, it drives the telescopic extrusion rod 24 to move down. At this time, the lower end of the telescopic extrusion rod 24 presses the trigger switch 23, which closes and turns on the power supply circuit of the air supply fan 3. The air supply fan 3 can be started and stopped by the up and down movement of the inner shell 11, which facilitates the effective control of the gas resources of the hot air flow.

[0034] In summary, the fire-retardant coating drying device designed in this invention, through a movable drying box 1 and an air supply fan 3, dries the fire-retardant coating on the surface of each material 101 one by one, which can avoid the problem of rapid drying and cracking of the fire-retardant coating. At the same time, the fire-retardant coating drying device is not dependent on the weather and can dry the fire-retardant coating sprayed on the surface of the material 101 at any time. Furthermore, the fire-retardant coating drying device can be installed on the construction site, and after the fire-retardant coating on the surface of the material 101 is dried, it can be directly put into construction use, which is more convenient and flexible, avoids the trouble of secondary transportation, saves costs, and helps to improve the efficiency of construction.

[0035] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fire-retardant coating drying device, characterized in that: It includes a drying box that spans across two guide rails, and the drying box is movable along the length of the guide rails; The material to be dried is placed between two guide rails and at the bottom of the drying chamber; The upper part of the drying box is equipped with multiple air supply fans. The air inlet of the air supply fan is connected to the air supply pipe, which is connected to an external airflow dryer. The airflow dryer continuously provides the air supply fans with dry and hot airflow. The drying chamber has baffles on both sides that are rotatably mounted to prevent the outflow of hot air from inside the drying chamber.

2. The fire-retardant coating drying device according to claim 1, characterized in that: A groove is opened on the inner side of the guide rail, and the groove is opened along the length of the guide rail. A material plate is provided in the groove, and multiple wheels are rotatably connected to both sides of the material plate. The wheels are rolled in the groove. Multiple support beams are provided on the upper surface of the material plate, and the support beams are all arranged along the length of the material plate. The material to be dried is placed perpendicular to the support beams.

3. The fire-retardant coating drying device according to claim 2, characterized in that: The guide rail is provided with a drive assembly for moving the drying box. The drive assembly includes a lead screw that passes through both ends of the drying box. The end of the lead screw is rotatably connected to the end of the guide rail and fixed to an external drive motor.

4. The fire-retardant coating drying device according to claim 3, characterized in that: The drying oven includes an outer shell and an inner shell, and a lifting assembly is provided between the outer shell and the inner shell; The lifting assembly includes screws disposed at both ends inside the housing, and the screws are threadedly connected to the side walls at both ends of the outer shell. The upper surface of the outer shell has a rectangular opening, the upper half of the inner shell can move up and down along the rectangular opening, multiple air supply fans are provided on the upper surface of the inner shell, and the lower port of the inner shell is used to cover the material to be dried.

5. A fire-retardant coating drying device according to claim 4, characterized in that: A first guide plate is symmetrically arranged on the two side walls of the inner shell. One edge of each first guide plate is rotatably connected to the inner side wall of the inner shell, and a torsion spring is provided at the rotatable connection point between the first guide plate and the inner shell. Multiple limiting plates are provided on the surface of the first guide plate opposite to the inner shell sidewall. The limiting plates are used to create a gap between the first guide plate and the inner shell sidewall.

6. The fire-retardant coating drying device according to claim 5, characterized in that: The inner shell has two symmetrical guide plates on its two inner side walls. The two guide plates are located below the first guide plate. One edge of each second guide plate is rotatably connected to the inner side wall of the inner shell, and the other edge of each second guide plate is rotatably connected to a push-pull rod. The end of the push-pull rod is rotatably connected to the first guide plate.

7. A fire-retardant coating drying device according to claim 6, characterized in that: Two flow dividers are symmetrically arranged at the top of the inner shell. The flow dividers are both arranged along the length of the inner shell and are arranged in an "eight" shape.

8. A fire-retardant coating drying device according to claim 4, characterized in that: Gears are symmetrically arranged at both ends of the outer shell. The gears are fixed to the ends of the rotating shaft of the baffle. The gears are externally meshed with a rack. The upper end of the rack is fixed to the upper end face of the inner shell through a crossbeam.

9. A fire-retardant coating drying device according to claim 8, characterized in that: Each rack has a strip-shaped sliding hole along its length. A reinforcing rod is installed in the sliding hole between two adjacent racks. The end of the reinforcing rod is slidably connected in the sliding hole, and the middle position of the reinforcing rod is fixed to the outer wall of the outer shell.

10. A fire-retardant coating drying device according to claim 9, characterized in that: The upper surface of the housing is provided with a touch switch for controlling the start and stop of the air supply fan. The touch switch is located on one side of the rectangular opening, and a telescopic squeezing rod is provided above each touch switch. The end of each telescopic squeezing rod is fixed to the housing of the air supply fan.

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