Dryer for processing dry powder extinguishing agent

Abstract

A drying machine for dry powder extinguishing agent processing comprises a drying kettle, a kettle cover is arranged on the upper side wall of the drying kettle, a mounting frame is fixedly connected to the center of the upper side wall of the kettle cover, a driving motor is mounted on the mounting frame, a stirring rod is fixedly connected to the output shaft end of the driving motor, and a heating bin is arranged on the inner wall of the drying kettle; a first-stage screen and a second-stage screen are fixedly connected to the inner wall of the heating bin, and the lower end of the stirring rod extends into the drying kettle and rotationally penetrates through the first-stage screen and the second-stage screen. Compared with the prior art, the drying kettle has the advantages that the dehumidifying mechanism is arranged, so that air in the drying kettle can be pumped out and dehumidified in the drying process, and the moisture content in the air can be effectively reduced. In this way, the dehumidified air is sent back into the drying kettle again, the air in the drying kettle can be ensured to be dry, and the problem that the drying efficiency is affected due to the fact that the air is humid is avoided.

Description

Technical Field

[0001] This utility model relates to the field of dry powder fire extinguishing agent processing technology, and in particular to a dryer for processing dry powder fire extinguishing agents. Background Technology

[0002] Dry powder fire extinguishing agent is a dry, free-flowing, finely ground solid powder primarily used for fire extinguishing. It is made by grinding a mixture of extinguishing base materials (such as baking soda, ammonium carbonate, and ammonium carbonate salts) with appropriate amounts of lubricants (such as magnesium stearate, mica powder, and talc powder) and a small amount of moisture-proofing agent (such as silica gel). These finely ground powder particles, once sprayed, quickly cover the surface of the burning material, forming an insulating layer that hinders combustion. Simultaneously, they release non-combustible gases, reducing the oxygen concentration and thus achieving the fire extinguishing effect.

[0003] Chinese patent CN221558551U discloses a drying device for producing high-efficiency dry powder fire extinguishing agent, including a drying box. Support plates are provided on both sides of the lower outer surface of the drying box, and a screening mechanism is arranged between the two sets of support plates. A controller is provided on one outer surface of each support plate. The screening mechanism includes a material pipe, a motor, a screening box, a rotating shaft, a discharge pipe, a filter screen, an eccentric wheel, a fixed frame, a first cylinder, a guide rod, a fixed plate, a pressing roller, a first moving block, a second cylinder, a frame, a moving groove, and a second moving block. The screening box is located between the two sets of support plates. The material pipe is located in the middle of the lower outer surface of the drying box, and the discharge pipe is located on the lower outer surface of the screening box. Control valves are provided in the middle of both the material pipe and the discharge pipe.

[0004] During the drying process, the aforementioned drying device generates moisture because the raw materials contain moisture. This moisture easily accumulates above the screening box, forming water droplets, which affects the drying efficiency. Utility Model Content

[0005] The main objective of this invention is to provide a dryer for processing dry powder fire extinguishing agents, which can effectively solve the problems in the background art.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a dryer for processing dry powder fire extinguishing agents, comprising a drying kettle, a kettle lid provided on the upper side wall of the drying kettle, a mounting frame fixedly connected to the center of the upper side wall of the kettle lid, a drive motor mounted on the mounting frame, a stirring rod fixedly connected to the output shaft end of the drive motor, a heating chamber provided on the inner wall of the drying kettle, a primary screen and a secondary screen fixedly connected to the inner wall of the heating chamber, the lower end of the stirring rod extending into the drying kettle and rotating through the primary screen and the secondary screen, two symmetrically distributed L-shaped mounting plates fixedly connected to the lower end wall of the stirring rod, a rolling roller rotatably provided on the side wall of the two L-shaped mounting plates that are far apart from each other, and a dehumidification mechanism provided on the kettle lid.

[0007] As a further description of the above technical solution, the dehumidification mechanism includes a support, a reciprocating screw, a driven bevel gear, a driving bevel gear, a guide rod, a moving block, a connecting rod, a sleeve, a piston, a dehumidification box, a dehumidification filter element, an inlet pipe, an exhaust pipe, a return pipe, and a one-way valve. The support, sleeve, and dehumidification box are fixedly connected to the upper side wall of the vessel lid. A reciprocating screw is rotatably mounted between the inner walls of the two sides of the support. One end of the reciprocating screw extends to the outside of the support and is fixedly connected to a driven bevel gear. A driving bevel gear meshing with the driven bevel gear is fixedly sleeved on the output shaft of the drive motor. Two... A symmetrically distributed guide rod is provided, and a moving block that cooperates with a reciprocating lead screw is slidably sleeved between two of the guide rods. A piston is provided inside the sleeve. A connecting rod is fixedly connected to the side wall of the moving block near the sleeve. The other end of the connecting rod extends into the sleeve and is fixedly connected to the piston. An air inlet pipe and an air outlet pipe are connected to the side wall of the sleeve away from the support. The other end of the air inlet pipe is connected to the drying kettle, and the air outlet pipe is connected to the dehumidification box. A dehumidification filter element is installed in the dehumidification box. A return air pipe is also connected to the dehumidification box. The other end of the return air pipe is connected to the drying kettle. A one-way valve is provided on both the air inlet pipe and the air outlet pipe.

[0008] As a further description of the above technical solution, the secondary screen is located below the primary screen.

[0009] As a further description of the above technical solution, the aperture of the primary screen is larger than that of the secondary screen.

[0010] As a further description of the above technical solution, the heating chamber is equipped with an electric heating tube.

[0011] As a further description of the above technical solution, a feeding port is provided on the upper side wall of the kettle lid, and a discharge pipe is provided on the bottom wall of the drying kettle.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. The dehumidification mechanism allows for the extraction and dehumidification of air from the drying chamber during the drying process, effectively reducing the moisture content. This dehumidified air is then returned to the drying chamber, ensuring its dryness and preventing moisture-induced performance issues that could negatively impact drying efficiency. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of a dryer for processing dry powder fire extinguishing agents according to the present invention;

[0015] Figure 2This is a schematic diagram of the internal structure of the drying kettle of a dryer for processing dry powder fire extinguishing agent according to this utility model;

[0016] Figure 3 This is a cross-sectional view of the drying kettle of a dryer for processing dry powder fire extinguishing agent according to this utility model;

[0017] Figure 4 This is a schematic diagram of the lid structure of a dryer for processing dry powder fire extinguishing agents according to the present invention;

[0018] Figure 5 This is a cross-sectional view of the sleeve of a dryer for processing dry powder fire extinguishing agents according to this utility model;

[0019] Figure 6 This is a schematic diagram of the dehumidifying filter element structure of a dryer for processing dry powder fire extinguishing agents according to this utility model;

[0020] In the diagram: 1. Drying kettle; 2. Kettle lid; 21. Mounting frame; 22. Drive motor; 23. Stirring rod; 3. Heating chamber; 4. Primary screen; 5. Secondary screen; 231. L-shaped mounting plate; 232. Roller; 6. Dehumidification mechanism; 61. Support; 62. Reciprocating screw; 63. Driven bevel gear; 64. Driving bevel gear; 65. Guide rod; 66. Moving block; 67. Connecting rod; 68. Sleeve; 681. Piston; 69. Dehumidification box; 691. Dehumidification filter element; 610. Inlet pipe; 611. Exhaust pipe; 612. Return pipe; 613. One-way valve; 31. Heating element. Detailed Implementation

[0021] To make the technical means, creative features, and objectives of this utility model easier to understand, the following describes this utility model in conjunction with specific embodiments.

[0022] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used 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. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] Please see Figure 1-6 This utility model provides a dryer for processing dry powder fire extinguishing agents, including a drying kettle 1. A kettle cover 2 is provided on the upper side wall of the drying kettle 1. A mounting frame 21 is fixedly connected to the center of the upper side wall of the kettle cover 2. A drive motor 22 is mounted on the mounting frame 21. A stirring rod 23 is fixedly connected to the output shaft end of the drive motor 22. A heating chamber 3 is provided on the inner wall of the drying kettle 1. A primary screen 4 and a secondary screen 5 are fixedly connected to the inner wall of the heating chamber 3. The lower end of the stirring rod 23 extends into the drying kettle 1 and rotates through the primary screen 4 and the secondary screen 5. Two symmetrically distributed L-shaped mounting plates 231 are fixedly connected to the lower end wall of the stirring rod 23. Rolling rollers 232 are rotatably mounted on the side walls of the L-shaped mounting plate 231 that are far apart from each other. The output shaft of the drive motor 22 can drive the stirring rod 23 to rotate. The rotation of the stirring rod 23 can stir the material on the primary screen 4, making the material heat more evenly. As drying proceeds, the clumps of material will slowly disperse during the stirring process and then fall onto the secondary screen 5 through the primary screen 4. At the same time, the rotation of the stirring rod 23 will drive the rolling rollers 232 to rotate through the L-shaped mounting plate 231. The rotation of the rolling rollers 232 can crush the material on the secondary screen 5, making the material finer and achieving more thorough drying. The lid 2 is equipped with a dehumidification mechanism 6.

[0025] Specifically, such as Figures 4 to 6As shown, a dryer for processing dry powder fire extinguishing agents includes a dehumidification mechanism 6 comprising a support 61, a reciprocating screw 62, a driven bevel gear 63, a driving bevel gear 64, a guide rod 65, a moving block 66, a connecting rod 67, a sleeve 68, a piston 681, a dehumidification chamber 69, a dehumidification filter element 691, an air inlet pipe 610, an exhaust pipe 611, a return air pipe 612, and a one-way valve 613. The support 61, the sleeve 68, and the dehumidification chamber 69 are fixedly connected to the upper side wall of the vessel cover 2. The reciprocating screw 62 is rotatably disposed between the inner walls of both sides of the support 61. One end of the reciprocating screw 62 extends to the outer side of the support 61 and is fixedly connected to the driven bevel gear 63. A drive bevel gear 64, meshing with a driven bevel gear 63, is fixedly sleeved on the output shaft of the drive motor 22. Two symmetrically distributed guide rods 65 are fixedly connected above the inner walls on both sides of the support 61. A moving block 66, cooperating with a reciprocating screw 62, is slidably sleeved between the two guide rods 65. A piston 681 is provided inside the sleeve 68. A connecting rod 67 is fixedly connected to the side wall of the moving block 66 near the sleeve 68. The other end of the connecting rod 67 extends into the sleeve 68 and is fixedly connected to the piston 681. An intake pipe 610 and an exhaust pipe 611 are connected to the side wall of the sleeve 68 away from the support 61. The other end of the intake pipe 610... The exhaust pipe 611 is connected to the drying kettle 1, and the dehumidification box 69 is connected to the dehumidification box 69. A dehumidification filter element 691 is installed inside the dehumidification box 69. A return air pipe 612 is also connected to the dehumidification box 69, with the other end of the return air pipe 612 connected to the drying kettle 1. One-way valves 613 are installed on both the inlet pipe 610 and the exhaust pipe 611. During the drying process, the output shaft of the drive motor 22 rotates, driving the active bevel gear 64 to rotate. The rotation of the active bevel gear 64 causes the driven bevel gear 63, which meshes with it, to drive the reciprocating screw 62 to rotate. When the reciprocating screw 62 rotates, the moving block 66 moves back and forth continuously along the guide rod 65, causing... The connecting rod 67 drives the piston 681 to move back and forth continuously. When the piston 681 moves to the left, the upper air in the drying chamber 1 can be extracted through the air inlet pipe 610. When the piston 681 moves to the right, this air will enter the dehumidification chamber 69 through the exhaust pipe 611. The one-way valve 613 ensures that the air can only enter the sleeve 68 through the air inlet pipe 610 and can only exit the sleeve 68 through the exhaust pipe 611. The air entering the dehumidification chamber 69 will be dehumidified and dried by the dehumidification filter element 691. The dried air will then re-enter the drying chamber 1 through the return air pipe 612, which will not cause heat waste and effectively improve the drying efficiency.

[0026] Specifically, such as Figure 3 As shown, a dryer for processing dry powder fire extinguishing agents has a secondary screen 5 located below the primary screen 4.

[0027] Specifically, such as Figure 3As shown, a dryer for processing dry powder fire extinguishing agents has a primary screen 4 with a larger aperture than the secondary screen 5. The primary screen 4 coarsely screens the material, and the coarsely screened material falls onto the secondary screen 5 for grinding and fine screening, resulting in a better drying effect.

[0028] Specifically, such as Figure 3 As shown, a dryer for processing dry powder fire extinguishing agents is provided, wherein an electric heating tube 31 is provided in the heating chamber 3, and the electric heating tube 31 can heat the inside of the drying kettle 1.

[0029] Specifically, such as Figure 1 As shown, a dryer for processing dry powder fire extinguishing agent is provided. The upper side wall of the lid 2 is provided with a feeding port. The material is added into the drying pot 1 through the feeding port for drying. The bottom wall of the drying pot 1 is provided with a discharge pipe with a valve. After the valve is opened, the dried material will be discharged from the drying pot 1 through the discharge pipe.

[0030] It should be noted that this utility model is a dryer for processing dry powder fire extinguishing agents. During use, the material is added to the drying vessel 1 through the feeding port. The material falls onto the primary screen 4. Due to the moisture and clumping of the material, it cannot pass through the primary screen 4 temporarily. The output shaft of the drive motor 22 drives the stirring rod 23 to rotate. The rotation of the stirring rod 23 stirs the material on the primary screen 4, making the material heat more evenly. As drying progresses, the clumped material gradually disperses during the stirring process and then falls through the primary screen 4 onto the secondary screen 5. Simultaneously, the rotation of the stirring rod 23 drives the rolling roller 232 to rotate via the L-shaped mounting plate 231. The rolling roller 232 crushes the material on the secondary screen 5, making the material finer and achieving more thorough drying, until the material can pass through the secondary screen 5 and falls below it to await discharge. During the drying process, the drive motor 22... The rotation of the output shaft drives the active bevel gear 64 to rotate. The rotation of the active bevel gear 64 causes the driven bevel gear 63, which meshes with it, to drive the reciprocating screw 62 to rotate. When the reciprocating screw 62 rotates, the moving block 66 moves back and forth along the guide rod 65, causing the connecting rod 67 to drive the piston 681 to move back and forth continuously. When the piston 681 moves to the left, the upper layer of air in the drying chamber 1 can be extracted through the air inlet pipe 610. When the piston 681 moves to the right, this air will enter the dehumidification chamber 69 through the exhaust pipe 611. The one-way valve 613 ensures that air can only enter the sleeve 68 through the air inlet pipe 610 and can only exit the sleeve 68 through the exhaust pipe 611. The air entering the dehumidification chamber 69 will be dehumidified and dried by the dehumidification filter element 691. The dried air will then re-enter the drying chamber 1 through the return air pipe 612, which will not cause heat waste and effectively improve the drying efficiency.

[0031] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A dryer for processing dry powder fire extinguishing agent, comprising a drying kettle (1), wherein a kettle cover (2) is provided on the upper side wall of the drying kettle (1), a mounting frame (21) is fixedly connected to the center of the upper side wall of the kettle cover (2), a drive motor (22) is mounted on the mounting frame (21), and a stirring rod (23) is fixedly connected to the output shaft end of the drive motor (22), characterized in that: The drying kettle (1) is provided with a heating chamber (3) on its inner wall. A primary screen (4) and a secondary screen (5) are fixedly connected to the inner wall of the heating chamber (3). The lower end of the stirring rod (23) extends into the drying kettle (1) and rotates through the primary screen (4) and the secondary screen (5). Two symmetrically distributed L-shaped mounting plates (231) are fixedly connected to the lower end of the stirring rod (23). Rolling rollers (232) are rotatably provided on the side walls of the two L-shaped mounting plates (231) that are far apart from each other. A dehumidification mechanism (6) is provided on the kettle cover (2).

2. The dryer for processing dry powder fire extinguishing agents according to claim 1, characterized in that: The dehumidification mechanism (6) includes a support (61), a reciprocating screw (62), a driven bevel gear (63), a driving bevel gear (64), a guide rod (65), a moving block (66), a connecting rod (67), a sleeve (68), a piston (681), a dehumidification box (69), a dehumidification filter element (691), an air inlet pipe (610), an exhaust pipe (611), a return air pipe (612), and a one-way valve (613). The support (61) is fixedly connected to the upper side wall of the lid (2). The support (61) includes a sleeve (68) and a dehumidification box (69). A reciprocating screw (62) is rotatably provided between the inner walls of both sides of the support (61). One end of the reciprocating screw (62) extends to the outside of the support (61) and is fixedly connected to a driven bevel gear (63). A driving bevel gear (64) that meshes with the driven bevel gear (63) is fixedly sleeved on the output shaft of the drive motor (22). Two symmetrically distributed guide rods are fixedly connected above the inner walls of both sides of the support (61). 65), a moving block (66) that cooperates with a reciprocating screw (62) is slidably sleeved between the two guide rods (65). A piston (681) is provided inside the sleeve (68). A connecting rod (67) is fixedly connected to the side wall of the moving block (66) near the sleeve (68). The other end of the connecting rod (67) extends into the sleeve (68) and is fixedly connected to the piston (681). An air inlet pipe (61) is connected to the side wall of the sleeve (68) away from the support (61). 0) and exhaust pipe (611), the other end of the air inlet pipe (610) is connected to the inside of the drying kettle (1), the exhaust pipe (611) is connected to the inside of the dehumidification box (69), the dehumidification box (69) is equipped with a dehumidification filter element (691), the dehumidification box (69) is also connected to a return air pipe (612), the other end of the return air pipe (612) is connected to the inside of the drying kettle (1), and a one-way valve (613) is provided on both the air inlet pipe (610) and the exhaust pipe (611).

3. The dryer for processing dry powder fire extinguishing agents according to claim 1, characterized in that: The secondary screen (5) is located below the primary screen (4).

4. A dryer for processing dry powder fire extinguishing agents according to claim 3, characterized in that: The aperture of the primary screen (4) is larger than that of the secondary screen (5).

5. A dryer for processing dry powder fire extinguishing agents according to claim 1, characterized in that: The heating chamber (3) is equipped with an electric heating tube (31).

6. A dryer for processing dry powder fire extinguishing agents according to claim 1, characterized in that: The upper side wall of the lid (2) is provided with a feeding port, and the bottom wall of the drying kettle (1) is provided with a discharge pipe.

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