Drying tail gas waste heat recovery type raw material forming machine

Abstract

The utility model belongs to the field of raw material processing, particularly relates to a drying tail gas waste heat recovery type raw material forming machine, and aims to solve the problems that when many existing drying devices are used, tail gas generated by drying is directly discharged to the outside, the tail gas has a certain temperature, and energy waste is caused by direct discharge. An air heater is arranged on one side of the drying oven, an air outlet of the air heater communicates with the drying oven through a pipeline, and the surface of the drying oven fixedly communicates with an air outlet pipe; the drying oven further comprises a water tank arranged on the other side of the drying oven, an S-shaped heat exchange pipe is fixedly arranged between the inner walls of the two sides of the water tank in a penetrating mode, and one end of the heat exchange pipe communicates with one end of the air outlet pipe. According to the device, waste heat of tail gas can be used for heating water in the water tank, energy waste is reduced, the water can be stirred, the heat exchange efficiency is improved, the backflow water can be discharged, and the water is prevented from being accumulated in the air outlet pipe.

Description

Technical Field

[0001] This utility model relates to the field of raw material processing technology, and in particular to a raw material forming machine with waste heat recovery from drying exhaust gas. Background Technology

[0002] Many raw materials need to be dried and shaped during processing, such as apples, bananas, and grapes. Drying can produce dried fruits, such as raisins and dried apples, extending their shelf life to meet the needs of subsequent use, storage, or transportation.

[0003] However, in existing technologies, many drying equipment directly release the exhaust gas generated during drying into the outside environment. This exhaust gas has a certain temperature, and direct release results in energy waste.

[0004] Therefore, we propose a raw material forming machine that recovers waste heat from drying exhaust gas. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing drying equipment where the exhaust gas generated during drying is directly discharged into the outside environment. This exhaust gas has a certain temperature, and its direct discharge causes energy waste. Therefore, this invention proposes a raw material forming machine that recovers waste heat from the drying exhaust gas.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A raw material forming machine with waste heat recovery from drying exhaust gas includes:

[0008] The oven has a hot air blower on one side, and the air outlet of the hot air blower is connected to the oven through a pipe. An air outlet pipe is fixedly connected to the surface of the oven.

[0009] It also includes a water tank located on the other side of the oven. An S-shaped heat exchange tube is fixedly inserted between the inner walls of the two sides of the water tank. One end of the heat exchange tube is connected to one end of the air outlet pipe. A fan is fixedly installed on one side of the outer wall of the water tank. The air inlet of the fan is connected to the other end of the heat exchange tube. A water inlet pipe is fixedly connected to the surface of the water tank. A water outlet pipe is fixedly connected to one side of the outer wall of the water tank.

[0010] Two stirring mechanisms are provided, both of which are located on one side of the heat exchange tube and are used to stir the water in the water tank.

[0011] A drainage structure is provided on one side of the air outlet duct to drain water from the air outlet duct.

[0012] In one possible design, the stirring mechanism includes two first fixed blocks, both of which are fixedly inserted through the outer wall of the heat exchange tube. A rotating rod is rotatably inserted between the two first fixed blocks. Multiple fan blades are fixedly provided on the outer wall of the rotating rod, and the fan blades are located inside the heat exchange tube. Stirring blades are fixedly provided at both ends of the rotating rod, and the stirring blades are located inside the water tank.

[0013] In one possible design, the drainage structure includes a drain pipe and a second fixing block, both of which are fixed to the outer wall of the air outlet pipe. A control valve is provided on one side of the drain pipe, which is located below the second fixing block. A sliding rod slides through the surface of the second fixing block, and a float is fixed at the bottom end of the sliding rod. The float is located inside the drain pipe.

[0014] In one possible design, the inner walls of both the first fixing block and the second fixing block are provided with annular grooves, and sealing rings are fixed in the annular grooves. The rotating rod and the sliding rod pass through the adjacent sealing rings respectively.

[0015] In one possible design, a scale is fixed to the outer wall of the air outlet duct, and the scale is located on one side of the second fixing block.

[0016] In one possible design, a water level gauge is provided on one side of the water tank.

[0017] In this application, the raw materials to be dried are placed in the drying oven, and then the hot air blower and fan are started to drive the airflow. The hot air blower provides hot air into the drying oven, and the exhaust gas from drying enters the heat exchange tube from the air outlet pipe. The heat of the exhaust gas is transferred to the water in the water tank through the heat exchange tube. At the same time, the flowing air can drive the fan blades and rotating rod to rotate, so that the stirring blades can stir the water and improve the heat exchange efficiency. Meanwhile, the water vapor carried in the exhaust gas condenses in the heat exchange tube, so that some of the water vapor becomes water and flows back into the air outlet pipe, and then enters the drain pipe to accumulate. When the accumulated water increases, it can drive the float and sliding rod to rise. When the sliding rod rises to a certain height, the control valve is opened to discharge the water and prevent excessive water accumulation in the air outlet pipe.

[0018] Beneficial effects: In this utility model, the raw material forming machine with waste heat recovery from drying exhaust gas can use the waste heat of exhaust gas to heat the water in the water tank by setting up multiple structures such as air outlet pipe, heat exchange pipe and stirring blade, which reduces energy waste and can stir the water, thus improving the heat exchange efficiency.

[0019] In this utility model, the raw material forming machine with waste heat recovery from drying exhaust gas can discharge the returned water through the setting of multiple structures such as drain pipe, control valve and slide bar, so as to avoid water accumulation in the air outlet pipe;

[0020] In this invention, the waste heat of the exhaust gas can be used to heat the water in the water tank, reducing energy waste. The water can also be stirred, improving heat exchange efficiency. Furthermore, the returned water can be discharged, preventing water accumulation in the exhaust duct. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall three-dimensional structure of a raw material forming machine for recovering waste heat from drying exhaust gas, as proposed in this utility model.

[0022] Figure 2 This is a schematic diagram of the internal structure of the water tank of a raw material forming machine for recovering waste heat from drying exhaust gas, as proposed in this utility model.

[0023] Figure 3 This is a cross-sectional view of the heat exchanger tube structure of a raw material forming machine for recovering waste heat from drying exhaust gas, as proposed in this utility model.

[0024] Figure 4 This is a cross-sectional view of the water pipe structure of a raw material forming machine for recovering waste heat from drying exhaust gas, as proposed in this utility model.

[0025] In the diagram: 1. Oven; 2. Hot air blower; 3. Air outlet pipe; 4. Water tank; 5. Heat exchanger pipe; 6. Fan; 7. Water inlet pipe; 8. Water outlet pipe; 9. First fixed block; 10. Rotating rod; 11. Fan blade; 12. Stirring blade; 13. Drain pipe; 14. Control valve; 15. Second fixed block; 16. Sliding rod; 17. Float ball; 18. Sealing ring; 19. Ruler; 20. Water level gauge. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0027] Example 1: Refer to Figures 1-4 A raw material forming machine with waste heat recovery from drying exhaust gas, comprising:

[0028] Oven 1, with a hot air blower 2 on one side of oven 1. The hot air blower 2 is model CT-C-IV. The air outlet of the hot air blower 2 is connected to oven 1 through a pipe so that hot air can be sent into oven 1 to heat and dry the raw materials. An air outlet pipe 3 is fixedly connected to the surface of oven 1 to discharge the exhaust gas generated during the drying process.

[0029] It also includes a water tank 4 located on the other side of the oven 1. An S-shaped heat exchange tube 5 is fixedly inserted between the inner walls of the two sides of the water tank 4. One end of the heat exchange tube 5 is connected to one end of the air outlet tube 3, so that the drying exhaust gas can enter the heat exchange tube 5. A fan 6 is fixedly installed on one side of the outer wall of the water tank 4. The air inlet of the fan 6 is connected to the other end of the heat exchange tube 5, which is used to discharge the gas after heat exchange through the heat exchange tube 5. A water inlet pipe 7 is fixedly connected to the surface of the water tank 4, and a water outlet pipe 8 is fixedly connected to one side of the outer wall of the water tank 4, which are used to add water to the water tank 4 and drain water from the water tank 4, respectively.

[0030] Two stirring mechanisms are provided, each located on one side of the heat exchange tube 5, for stirring the water in the water tank 4. Each stirring mechanism includes two first fixing blocks 9, both of which are fixedly inserted through the outer wall of the heat exchange tube 5. A rotating rod 10 is rotatably inserted between the two first fixing blocks 9. Multiple fan blades 11 are fixedly provided on the outer wall of the rotating rod 10, and the fan blades 11 are located inside the heat exchange tube 5. Stirring blades 12 are fixedly provided at both ends of the rotating rod 10, and the stirring blades 12 are located inside the water tank 4. When the drying exhaust gas passes through the heat exchange tube 5, it will drive the fan blades 11 to rotate, which in turn will drive the rotating rod 10 to rotate. The rotation of the rotating rod 10 will drive the stirring blades 12 to stir the water in the water tank 4, thereby improving the heat exchange efficiency.

[0031] A drainage structure is installed on one side of the air outlet duct 3 to drain water from the air outlet duct 3. The drainage structure includes a drain pipe 13 and a second fixing block 15. Both the drain pipe 13 and the second fixing block 15 are fixed to the outer wall of the air outlet duct 3. A control valve 14 is provided on one side of the drain pipe 13. The drain pipe 13 is located below the second fixing block 15. A sliding rod 16 slides through the surface of the second fixing block 15. A float ball 17 is fixed at the bottom end of the sliding rod 16. The float ball 17 is located inside the drain pipe 13. When the water accumulated in the air outlet duct 3 reaches a certain amount, the float ball 17 will rise with the rise of the water level. People can judge the amount of water by the rising height of the sliding rod 16.

[0032] Example 2: An improved raw material forming machine based on the waste heat recovery of drying exhaust gas, according to Example 1.

[0033] In another aspect of this embodiment, the inner walls of the first fixing block 9 and the second fixing block 15 are both provided with annular grooves, and sealing rings 18 are fixed in the annular grooves. The rotating rod 10 and the sliding rod 16 pass through the adjacent sealing rings 18 respectively to improve the sealing performance and prevent water from leaking from the gaps.

[0034] In another aspect of this embodiment, a scale 19 is fixed on the outer wall of the air outlet pipe 3. The scale 19 is located on one side of the second fixing block 15. Through the scale 19, the accumulation of water in the air outlet pipe 3 can be observed intuitively so that measures can be taken in time to drain the water.

[0035] In another aspect of this embodiment, a water level gauge 20 is provided on one side of the water tank 4 to facilitate people in knowing the water level in the water tank 4.

[0036] However, as is well known to those skilled in the art, the working principle and wiring method of the fan 6 are commonplace and are all conventional methods or common knowledge, so they will not be described in detail here. Those skilled in the art can make any selections according to their needs or convenience.

[0037] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A raw material forming machine with waste heat recovery from drying exhaust gas, characterized in that, The utility model relates to a heat exchange type water tank with hot air blowing function, which comprises the following components: An oven (1) is provided with a hot air blower (2) on one side, the outlet of the hot air blower (2) is connected with the oven (1) through a pipeline, and a blow-off pipe (3) is fixedly connected to the surface of the oven (1); A water tank (4) is arranged on the other side of the oven (1), an S-shaped heat exchange pipe (5) is fixedly arranged between the inner walls of the water tank (4), one end of the heat exchange pipe (5) is connected with one end of the blow-off pipe (3), a fan (6) is fixedly arranged on one side of the water tank (4), the air inlet of the fan (6) is connected with the other end of the heat exchange pipe (5), a water inlet pipe (7) is fixedly connected to the surface of the water tank (4), and a water outlet pipe (8) is fixedly connected to one side of the water tank (4); Two stirring mechanisms are arranged on one side of the heat exchange pipe (5) and used for stirring the water in the water tank (4); A drainage structure is arranged on one side of the blow-off pipe (3) and used for draining the water in the blow-off pipe (3).

2. A raw material molding machine of the exhaust heat recovery type according to claim 1, wherein The stirring mechanism comprises two first fixing blocks (9) which are fixedly arranged through the outer wall of the heat exchange pipe (5), a rotating rod (10) which is rotatably arranged between the two first fixing blocks (9), a plurality of fan blades (11) which are fixedly arranged on the outer wall of the rotating rod (10) and located in the heat exchange pipe (5), and stirring blades (12) which are fixedly arranged at the two ends of the rotating rod (10) and located in the water tank (4).

3. A raw material molding machine of the exhaust heat recovery type according to claim 2, wherein The drainage structure comprises a drainage pipe (13) and a second fixing block (15), both of which are fixedly arranged on the outer wall of the blow-off pipe (3), the drainage pipe (13) is provided with a control valve (14) on one side, the drainage pipe (13) is located below the second fixing block (15), a sliding rod (16) is slidingly arranged on the surface of the second fixing block (15), a floating ball (17) is fixedly arranged at the bottom end of the sliding rod (16) and located in the drainage pipe (13).

4. A raw material molding machine of the exhaust heat recovery type according to claim 3, wherein The inner walls of the first fixing block (9) and the second fixing block (15) are both provided with annular grooves, and a sealing ring (18) is fixedly arranged in each annular groove.

5. A raw material molding machine of the exhaust heat recovery type according to claim 4, wherein A scale (19) is fixedly arranged on the outer wall of the blow-off pipe (3) and located on one side of the second fixing block (15).

6. A raw material molding machine of the exhaust heat recovery type according to claim 5, wherein A water level meter (20) is arranged on one side of the water tank (4).

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