Fireproof coating drying device

Abstract

The utility model relates to the technical field of fireproof coating processing, in particular to a fireproof coating drying device which comprises a material barrel, the material barrel is composed of an internal barrel and an external barrel which are coaxially arranged, a material cavity is formed in the internal barrel, a feeding port and a discharging port are formed in the front end and the rear end of the material cavity respectively, and a stirring shaft is arranged in the material cavity. A spiral blade is arranged on the stirring shaft, and after the spiral blade rotates, materials located on one side of the feeding port can be conveyed towards one side of the discharging port; the stirring shaft and the built-in cylinder are coaxially arranged, an air cavity is formed between the inner side wall of the external cylinder and the outer side wall of the built-in cylinder, an air inlet pipe is connected to the side, close to the discharging port, of the air cavity, an air outlet pipe is connected to the side, close to the feeding port, of the air cavity, and the outer side ends of the air inlet pipe and the air outlet pipe are used for being connected with an external hot air system. And hot air can be directionally input into the air cavity as a drying source. The fire retardant coating drying device is beneficial to solving the problems that batch-by-batch operation is needed and heating is not uniform in the drying process when some existing fire retardant coatings are dried.

Description

Technical Field

[0001] The utility model relates to the technical field of fire-retardant coating processing, in particular to a fire-retardant coating drying device. Background Art

[0002] Fire retardant coatings are coatings applied to the surface of flammable materials to improve the fire resistance of the materials, slow down the spread of flames, or prevent combustion within a certain period of time. Fire retardant coatings usually need to be dried after manufacturing, so a drying equipment for fire retardant coatings is needed.

[0003] Most of the existing drying devices directly put the powdered fire retardant coating into a container and heat the container for drying. However, since the powdered fire retardant coating is piled together, the heating is uneven during drying. Often the outside has been dried, but the inside has not yet reached the drying requirements, requiring a longer drying process, thereby reducing the drying efficiency. Utility Model Content

[0004] The utility model provides a fire retardant coating drying device, which is beneficial to solving the problems that some existing fire retardant coatings need to be dried in batches, which is cumbersome and the heating is uneven during the drying process.

[0005] The utility model is achieved in this way:

[0006] The fire-retardant coating drying device comprises a barrel, which is composed of an inner barrel and an outer barrel arranged coaxially, a material cavity is formed inside the inner barrel, a feed port and a discharge port are respectively arranged at the front and rear ends of the material cavity, a stirring shaft is arranged in the material cavity, a spiral blade is arranged on the stirring shaft, both ends of the stirring shaft are pivotally connected to the two ends of the inner barrel axis through bearings, and one end of the stirring shaft extends to the outside of the barrel to connect with a rotating driving member, the rotating driving member can drive the stirring shaft to rotate, and the spiral blade can transport the material located on the feed port side toward the discharge port side after rotation; the stirring shaft is coaxially arranged with the inner barrel, an air cavity is formed between the inner side wall of the outer barrel and the outer side wall of the inner barrel, an air inlet pipe is connected to the side of the air cavity close to the discharge port, and an air outlet pipe is connected to the side of the air cavity close to the feed port, and the outer ends of the air inlet pipe and the air outlet pipe are used to connect to an external hot air system, which can directionally input hot air into the air cavity as a drying source.

[0007] On the basis of the above technical solution, the feed port is located at the top of one end of the inner tube and extends to the outside of the outer tube.

[0008] On the basis of the above technical solution, the discharge port is located at the bottom of the end of the inner tube away from the feed port, and extends to the outside of the outer tube.

[0009] Based on the above technical solution, the rotary drive member is a reduction motor.

[0010] On the basis of the above technical solution, the reduction motor is connected and fixed to the outer side wall of the barrel through a mounting seat.

[0011] On the basis of the above technical solution, a guide vane is provided on the inner wall of the external tube, and the guide vane can directional guide the hot air in the wind cavity.

[0012] Based on the above technical solution, the guide vane is a spiral structure.

[0013] On the basis of the above technical solution, a plurality of ramming flanges are evenly distributed on the spiral blade.

[0014] On the basis of the above technical solution, the ramming flange is a columnar structure.

[0015] On the basis of the above technical solution, a plurality of exhaust pipes extending to the outside of the external tube are provided at the top of the internal tube.

[0016] Compared with the prior art, the utility model has at least the following advantages:

[0017] The utility model comprises a material barrel composed of two coaxially arranged hollow cylinders, the interior of which serves as a material chamber capable of continuously and directional material conveying, and an air chamber wrapped outside the material chamber, in which hot air can be directionally conveyed as a drying source, and an interval wrapping heating method is utilized, and the rotation of the integrated stirring shaft can stir the material while conveying the material, so that the material is sufficiently and evenly heated, which is conducive to solving the problem that the drying of some existing fire retardant coatings requires cumbersome batch operations and the heating is uneven during the drying process. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 This is a schematic diagram of the three-dimensional structure of a fire retardant coating drying device in one embodiment;

[0020] Figure 2 for Figure 1 A cross-sectional view of

[0021] Figure 3 This is a schematic diagram of the three-dimensional structure of the internal tube in one embodiment;

[0022] Figure 4 for Figure 3 A cross-sectional view of

[0023] Figure 5 A schematic diagram of a partial structure of a ramming flange in one embodiment;

[0024] Figure 6 Schematic diagram of the distribution structure of the exhaust pipe in one embodiment.

[0025] Markings in the figure: 1. barrel; 11. internal barrel; 111. feed port; 112. discharge port; 12. external barrel; 121. air inlet pipe; 122. air outlet pipe; 123. guide vane; 13. exhaust pipe; 2. stirring shaft; 21. spiral blade; 22. tamping flange; 3. reduction motor; a. material chamber; b. air chamber. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the utility model for which protection is claimed, but merely represents selected embodiments of the utility model.

[0027] In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0028] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to an element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0029] The utility model is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] Example 1: Combination Figure 1 and Figure 2This embodiment discloses a fire retardant coating drying device, including a barrel 1, a stirring shaft 2 and a rotating drive member, which is used for continuous material feeding and drying operations.

[0031] The barrel 1 is composed of an inner barrel 11 and an outer barrel 12 which are coaxially arranged, forming a double-cavity structure with inner and outer chambers spaced apart.

[0032] The inner cylinder 11 forms a material cavity a, and the front and rear ends of the material cavity a are respectively provided with a feed port 111 and a discharge port 112, wherein the feed port 111 is located at the top of one end of the inner cylinder 11 and extends to the outside of the external cylinder 12, and the discharge port 112 is located at the bottom of the end of the inner cylinder 11 away from the feed port 111 and extends to the outside of the external cylinder 12. When in use, the fire retardant coating enters the material cavity a from the feed port 111 as a material, and is discharged through the discharge port 112 after passing through the material cavity a, and stirring and drying are completed in this process.

[0033] Further, such as Figure 2 As shown, a stirring shaft 2 is provided in the material chamber a, and the stirring shaft 2 is coaxially arranged with the inner cylinder 11. A spiral blade 21 is provided on the stirring shaft 2. Both ends of the stirring shaft 2 are pivotally connected to the axial ends of the inner cylinder 11 through bearings, and one end thereof extends to the outside of the material barrel 1 to connect with a rotating driving member, and the rotating driving member is a reduction motor 3, and the reduction motor 3 is connected and fixed to the outer wall of the material barrel 1 through a mounting seat.

[0034] The rotating drive member can drive the stirring shaft 2 to rotate. After the spiral blade 21 rotates, the material located on the side of the feed port 111 can be transported to the side of the discharge port 112. The material is stirred simultaneously during the transportation process, so that the material continues to surge and mix during the movement, and can be fully and evenly heated to achieve the drying effect.

[0035] Furthermore, an air cavity b is formed between the inner wall of the external cylinder 12 and the outer wall of the internal cylinder 11, and an air inlet pipe 121 is connected to the side of the air cavity b close to the discharge port 112, and an air outlet pipe 122 is connected to the side of the air cavity b close to the feed port 111. The outer ends of the air inlet pipe 121 and the air outlet pipe 122 are used to connect to an external hot air system, and can input hot air into the air cavity b in a directional manner as a drying source. Among them, the hot air system is a prior art, and its specific structure and working principle are not described here in detail. Those skilled in the art can select and implement it from the prior art according to actual operating conditions.

[0036] Combination Figure 2In the specific implementation process, the fire retardant coating enters the material chamber a from the feed port 111 as a material, and is initially located on the left side of the material chamber a. The reduction motor 3 drives the stirring shaft 2 to rotate, and the spiral blade 21 rotates with the stirring shaft 2 to form a spiral feeding mechanism, which transports the material originally located on the left side of the material chamber a to the right, and stirs and mixes the material synchronously, and finally outputs it through the discharge port 112 at the bottom of the right side. In this process, the air inlet pipe 121 synchronously and continuously inputs hot air of the threshold temperature into the air chamber b, and the hot air surrounds and wraps the built-in cylinder 11 in the air chamber b, and heats the material in the material chamber a at intervals. The direction of the air flow is opposite to that of the material, which is conducive to fully weakening the temperature difference that may exist between the air inlet end and the air outlet end, so that the closer to the discharge end, the higher the temperature controllability, the better the drying effect, and the gas after slight heat exchange and cooling can preheat the material at the feed end, provide effective power for heating, and also improve the drying efficiency and drying effect. It should be noted that in this embodiment, the water vapor generated by the material being heated in the material chamber a can be discharged through the feed port 111.

[0037] Example 2: Based on Example 1, Figure 3 and Figure 4 In this embodiment, a guide plate 123 is provided on the inner wall of the external cylinder 12, and the guide plate 123 can directional guide the hot air in the air cavity b. The guide plate 123 is a spiral structure, which allows the hot air to flow in a spiral path when entering the air cavity b, and then can be evenly arranged around the internal cylinder 11. This method makes the heating of each area of ​​the internal cylinder 11 more uniform and stable, avoiding the occurrence of uneven heating.

[0038] Embodiment 3: Based on Embodiment 1, Figure 5 As shown, in this embodiment, in order to improve the uniformity of material mixing, a number of pounding flanges 22 are evenly distributed on the spiral blade 21. Specifically, the pounding flange 22 is a columnar structure, which enriches the surface structure of the spiral blade 21, greatly increases the contact area when mixing materials, and also increases the hierarchical relationship of the pounding structure, which can greatly improve the mixing effect and thus improve the drying uniformity.

[0039] Embodiment 4: Based on Embodiment 1, Figure 6 As shown, in this embodiment, in order to reduce the accumulation of water vapor inside the material chamber a, a plurality of exhaust pipes 13 extending to the outside of the external cylinder 12 are provided on the top of the internal cylinder 11. The exhaust pipes 13 are small tube structures that can discharge the water vapor generated after the material is dried in time, thereby improving the drying effect.

[0040] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. Fire retardant coating drying device, characterized in that: The invention comprises a barrel (1), wherein the barrel (1) is composed of an inner barrel (11) and an outer barrel (12) which are coaxially arranged. A material chamber (a) is formed inside the inner barrel (11). A feed port (111) and a discharge port (112) are respectively arranged at the front and rear ends of the material chamber (a). A stirring shaft (2) is arranged in the material chamber (a). A spiral blade (21) is arranged on the stirring shaft (2). Both ends of the stirring shaft (2) are pivotally connected to the axial ends of the inner barrel (11) through bearings, and one end of the stirring shaft (2) extends to the outside of the barrel (1) to connect to a rotating drive member. The rotating drive member can drive the stirring shaft (2) to rotate, and the spiral blade (21) rotates. The material located on one side of the feed port (111) can then be transported toward the side of the discharge port (112); the stirring shaft (2) is coaxially arranged with the internal cylinder (11); an air cavity (b) is formed between the inner wall of the external cylinder (12) and the outer wall of the internal cylinder (11); the side of the air cavity (b) close to the discharge port (112) is connected to an air inlet pipe (121); the side of the air cavity (b) close to the feed port (111) is connected to an air outlet pipe (122); the outer ends of the air inlet pipe (121) and the air outlet pipe (122) are used to connect to an external hot air system, so that hot air can be directed into the air cavity (b) as a drying source.

2. The fire retardant coating drying device according to claim 1, characterized in that: The feed port (111) is located at the top of one end of the inner tube (11) and extends to the outside of the outer tube (12).

3. The fire retardant coating drying device according to claim 2, characterized in that: The discharge port (112) is located at the bottom of the end of the inner cylinder (11) away from the feed port (111), and extends to the outside of the outer cylinder (12).

4. The fire retardant coating drying device according to claim 1, characterized in that: The rotary drive member is a reduction motor (3).

5. The fire retardant coating drying device according to claim 4, characterized in that: The reduction motor (3) is connected and fixed to the outer side wall of the barrel (1) via a mounting seat.

6. The fire retardant coating drying device according to claim 1, characterized in that: A guide plate (123) is provided on the inner side wall of the external cylinder (12), and the guide plate (123) can guide the hot air in the air cavity (b) in a directional manner.

7. The fire retardant coating drying device according to claim 6, characterized in that: The guide plate (123) is a spiral structure.

8. The fire retardant coating drying device according to claim 1, characterized in that: A plurality of ramming flanges (22) are evenly distributed on the spiral blade (21).

9. The fire retardant coating drying device according to claim 8, characterized in that: The tamping flange (22) is a column structure.

10. The fire retardant coating drying device according to claim 1, characterized in that: A plurality of exhaust pipes (13) extending to the outside of the external cylinder (12) are provided at the top of the internal cylinder (11).

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