Belt dryer with hot gas injection device

Abstract

The utility model discloses a belt dryer with hot gas injection device, including drying box, the inner wall fixedly connected with the air inlet box of drying box, the shape of air inlet box is set to U shape, the bottom intercommunication of air inlet box has the air inlet pipe of equidistance arrangement, the back one end of air inlet pipe penetrates and extends to the outside of drying box, the back one end of air inlet pipe is installed hot blast fan, the inside intercommunication of air inlet box has two groups equidistance arrangement's shower nozzle, the both sides of drying box all are set up and have the through -hole. The utility model, hot air will directly impact the material surface with certain speed, and penetrate material layer simultaneously, realize quick and even drying, and then improve the efficiency of material drying, and in the process of recycling material in waste gas, can carry out the recycling of waste heat in waste gas, utilize the preheating of material to waste heat in waste gas, and then improve the drying efficiency of material, improve the environmental protection ability of device.

Description

Technical Field

[0001] This utility model relates to the field of belt dryer technology, and more specifically, to a belt dryer with a hot air jetting device. Background Technology

[0002] The belt dryer with hot air injection device is an upgraded version of continuous drying equipment, which integrates a high-pressure hot air injection system on the basis of the traditional belt dryer.

[0003] When a belt dryer equipped with a hot air jet device is working, the exhaust gas it produces contains a certain amount of heat. If this heat is not recovered and utilized, it will lead to heat waste. At the same time, clumps of material will enter the dryer, affecting the drying effect. Utility Model Content

[0004] In view of the problems existing in the prior art, the purpose of this utility model is to provide a belt dryer with a hot air injection device to solve the problems in the background art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution; A belt dryer with a hot air jet device includes a drying chamber. An air inlet box is fixedly connected to the inner wall of the drying chamber. The air inlet box is U-shaped, and its bottom is connected to equidistantly arranged air inlet pipes. One end of each air inlet pipe extends through the back of the drying chamber and to the outside of the drying chamber. A hot air blower is installed at the back of each air inlet pipe. Two sets of equidistantly arranged nozzles are connected to the inner side of the air inlet box. Through holes are provided on both the left and right sides of the drying chamber. A conveyor belt is installed between the inner walls of two through holes. The top of the drying chamber... A preheating box is fixedly connected, with its bottom open. An air outlet box is fixedly connected to the top of the drying box, and the air outlet box is U-shaped. The top of the air outlet box is fixedly connected to the inner wall of the preheating box. Feed inlets are opened on both the left and right sides of the preheating box, and a conveyor belt is installed between the two feed inlets. The bottom of the air outlet box has equally spaced suction slots, and the top of the air outlet box is connected to an air outlet pipe. The top of the air outlet pipe passes through the preheating box and is connected to the air inlet of the cyclone separator.

[0006] As a further description of the above technical solution: Auxiliary boxes are fixedly connected to both the left and right sides of the drying box. The bottom of the auxiliary box on the left side is connected to a discharge pipe, and the top of the auxiliary box on the right side is connected to a feed pipe.

[0007] As a further description of the above technical solution: Both conveyor belt one and conveyor belt two are made of high-temperature resistant Teflon belt.

[0008] As a further description of the above technical solution: Two motors are fixedly connected to the top of the preheating box. The output shafts of the two motors are fixedly connected to rotating rods. The bottom ends of the two rotating rods pass through the preheating box and the air outlet box and extend to the top of the second conveyor belt. Two crushing rods are fixedly connected to the bottom ends of the two rotating rods.

[0009] As a further description of the above technical solution: The preheating box is fixedly connected to both the left and right sides with splash-proof boxes. The bottom of the two splash-proof boxes is fixedly connected to the two auxiliary boxes respectively. The splash-proof box on the left side is C-shaped, and the left side and bottom of the splash-proof box on the right side are open.

[0010] Compared with existing technologies, the advantages of this utility model are: In this design, hot air directly impacts the material surface at a certain speed, penetrating the material layer to achieve rapid and uniform drying, thereby improving the drying efficiency. Furthermore, during the material recovery process from the exhaust gas, residual heat can be recovered and utilized to preheat the material, further enhancing drying efficiency and improving the environmental friendliness of the equipment. This preheating process also allows for the crushing of agglomerated materials, further improving drying efficiency and quality, and enhancing the practicality of the equipment. Attached Figure Description

[0011] Figure 1 One of the perspective views of this utility model; Figure 2 This is a second perspective view of the present utility model; Figure 3 This is a cross-sectional view of the present invention; Figure 4 This is a partial perspective view of the present invention.

[0012] Explanation of the labels in the diagram: 1. Drying oven; 2. Air inlet box; 3. Air inlet pipe; 4. Hot air blower; 5. Nozzle; 6. Through hole; 7. Conveyor belt one; 8. Preheating box; 9. Air outlet box; 10. Feed inlet; 11. Conveyor belt two; 12. Suction groove; 13. Air outlet pipe; 14. Auxiliary box; 15. Feeding pipe; 16. Feeding pipe; 17. Motor; 18. Rotating rod; 19. Crushing rod; 20. Splash guard box. Detailed Implementation

[0013] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0014] To address the issue that existing belt dryers equipped with hot air injection devices cannot recover and utilize the waste heat from the exhaust gas, this solution provides Example 1: Please see Figures 1-4 In this utility model: a belt dryer with a hot air jet device includes a drying chamber 1. An air inlet box 2 is fixedly connected to the inner wall of the drying chamber 1. The air inlet box 2 is U-shaped. The bottom of the air inlet box 2 is connected to air inlet pipes 3 arranged at equal intervals. One end of the back of the air inlet pipes 3 passes through and extends to the outside of the drying chamber 1. A hot air blower 4 is installed at one end of the back of the air inlet pipes 3. Two sets of nozzles 5 arranged at equal intervals are connected to the inner side of the air inlet box 2. Through holes 6 are opened on both the left and right sides of the drying chamber 1. A conveyor belt 7 is installed between the inner walls of the two through holes 6. The top of the drying chamber 1... A preheating box 8 is fixedly connected to the preheating box 1. The bottom of the preheating box 8 is open. An air outlet box 9 is fixedly connected to the top of the drying box 1. The air outlet box 9 is shaped like a U-shape. The top of the air outlet box 9 is fixedly connected to the inner wall of the preheating box 8. There are feed inlets 10 on both the left and right sides of the preheating box 8. A conveyor belt 11 is installed between the two feed inlets 10. There are air suction slots 12 arranged at equal intervals at the bottom of the air outlet box 9. An air outlet pipe 13 is connected to the top of the air outlet box 9. The top of the air outlet pipe 13 passes through the preheating box 8 and is connected to the air inlet of the cyclone separator.

[0015] In this invention, when drying materials, the hot air blower 4 and the cyclone separator connected to the top of the air outlet pipe 13 are first turned on. The hot air blower 4 introduces high-temperature air into the air inlet box 2 through the air inlet pipe 3. The hot air heats the air inlet box 2, thereby raising the temperature inside the drying chamber 1. The material is conveyed on top of the conveyor belt 7, thus achieving the drying of the material. At the same time, hot air is sprayed out from two sets of nozzles 5, located on the front and back sides of the conveyor belt 7. The hot air directly impacts the surface of the material at a certain speed, penetrating the material layer to achieve rapid and uniform drying, thereby improving the drying efficiency of the material. The exhaust gas after contacting the material is separated by the cyclone separator. The exhaust gas, combined with the fan, is drawn into the exhaust box 9 through the suction slot 12. The exhaust gas then flows through the exhaust box 9 and enters the cyclone separator through the exhaust pipe 13, where the exhaust gas and material are separated. During the flow of the exhaust gas inside the exhaust box 9, the heat in the exhaust gas heats the exhaust box 9, thereby preheating the material to be dried conveyed on the second conveyor belt 11. After being preheated, the material conveyed at the top of the second conveyor belt 11 falls from the right end of the second conveyor belt 11 onto the top of the first conveyor belt 7. The preheated material then enters the drying chamber 1 for drying. Because the material is preheated, the drying efficiency can be effectively improved, thereby achieving the effect of recovering and utilizing the heat in the exhaust gas.

[0016] Please see Figures 1-3In this case, auxiliary boxes 14 are fixedly connected to both the left and right sides of the drying box 1. The bottom of the left auxiliary box 14 is connected to the discharge pipe 15, and the top of the right auxiliary box 14 is connected to the feed pipe 16.

[0017] In this invention, the cooperation between the auxiliary box 14, the feeding pipe 15, and the feeding pipe 16 facilitates the loading and unloading of materials, avoids material leakage during the loading and unloading process, and improves the practicality of the device.

[0018] Among them, conveyor belt 7 and conveyor belt 11 both use high-temperature resistant Teflon belts.

[0019] In this invention, both conveyor belt 7 and conveyor belt 11 are made of high-temperature resistant Teflon belt, which can effectively prevent the high temperature of the dried material from damaging the conveyor belt, thereby improving the practicality of the device.

[0020] To address the issue of agglomerated materials negatively impacting drying efficiency, this solution provides Example 2: Please see Figures 1-4 The preheating box 8 has two motors 17 fixedly connected to its top. The output shafts of the two motors 17 are fixedly connected to rotating rods 18. The bottom ends of the two rotating rods 18 pass through the preheating box 8 and the air outlet box 9 in sequence and extend to the top of the conveyor belt 11. The bottom ends of the two rotating rods 18 are fixedly connected to two crushing rods 19.

[0021] In this invention, during the preheating process of the material being conveyed at the top of the conveyor belt 11, the motor 17 is turned on to drive the rotating rod 18 to rotate. The rotating rod 18 will drive the crushing rod 19 to rotate, and the crushing rod 19 will impact the clumped material, thereby achieving the effect of crushing the clumped material. After the material is crushed, it enters the drying chamber 1 for drying, thereby effectively improving the drying efficiency and drying quality.

[0022] Please see Figures 1-3 The preheating box 8 is fixedly connected to two splash shields 20 on both sides. The bottom of the two splash shields 20 is fixedly connected to two auxiliary boxes 14 respectively. The left splash shield 20 is C-shaped, and the left side and bottom of the right splash shield 20 are open.

[0023] In this invention, the splash guard 20 can effectively prevent material from splashing out of the feed inlet 10 when breaking up clumps of material, thereby improving the practicality of the device.

[0024] The above are merely preferred embodiments of this utility model; however, the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and its improved concept, should be included within the scope of protection of this utility model.

Claims

1. Belt dryer with hot gas injection, comprising a drying cabinet (1), characterized in that: An air inlet box (2) is fixedly connected to the inner wall of the drying box (1). The air inlet box (2) is U-shaped. The bottom of the air inlet box (2) is connected to an air inlet pipe (3) arranged at equal intervals. One end of the back of the air inlet pipe (3) extends through and to the outside of the drying box (1). A hot air blower (4) is installed at one end of the back of the air inlet pipe (3). Two sets of nozzles (5) arranged at equal intervals are connected to the inner side of the air inlet box (2). Through holes (6) are opened on both the left and right sides of the drying box (1). A conveyor belt (7) is installed between the inner walls of the two through holes (6). A preheating box (8) is fixedly connected to the top of the drying box (1). The bottom of the heating box (8) is open. The top of the drying box (1) is connected to the air outlet box (9). The air outlet box (9) is shaped like a U-shape. The top of the air outlet box (9) is fixedly connected to the inner wall of the preheating box (8). The preheating box (8) has inlet ports (10) on both the left and right sides. A conveyor belt (11) is installed between the two inlet ports (10). The bottom of the air outlet box (9) has suction slots (12) arranged at equal intervals. The top of the air outlet box (9) is connected to an air outlet pipe (13). The top of the air outlet pipe (13) passes through the preheating box (8) and is connected to the air inlet of the cyclone separator.

2. The belt dryer with hot gas injection means according to claim 1, characterized in that: The drying box (1) is fixedly connected to auxiliary boxes (14) on both the left and right sides. The bottom of the auxiliary box (14) on the left side is connected to a feeding pipe (15), and the top of the auxiliary box (14) on the right side is connected to a feeding pipe (16).

3. The belt dryer with hot gas injection means according to claim 1, characterized in that: Both conveyor belt one (7) and conveyor belt two (11) are made of high temperature resistant Teflon belt.

4. The belt dryer with hot gas injection means according to claim 1, characterized in that: Two motors (17) are fixedly connected to the top of the preheating box (8). The output shafts of the two motors (17) are fixedly connected to rotating rods (18). The bottom ends of the two rotating rods (18) pass through the preheating box (8) and the air outlet box (9) in sequence and extend to the top of the second conveyor belt (11). The bottom ends of the two rotating rods (18) are fixedly connected to two crushing rods (19).

5. The belt dryer with hot gas injection means according to claim 2, characterized in that: The preheating box (8) is fixedly connected to splash shields (20) on both the left and right sides. The bottoms of the two splash shields (20) are fixedly connected to the two auxiliary boxes (14) respectively. The splash shield (20) on the left side is C-shaped, and the left side and bottom of the splash shield (20) on the right side are open.

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