Heat exchange metering energy-saving device of dipping machine
By designing a heat exchange metering and energy-saving device specifically for impregnation machinery, the problem of unused waste gas from the impregnation machine was solved, achieving efficient heat exchange and energy-saving operation, reducing maintenance costs, and extending equipment life.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-06
- Publication Date
- 2026-03-10
AI Technical Summary
The high-temperature waste gas generated during the production process of existing impregnation machines is not effectively utilized, resulting in energy waste. Furthermore, existing heat exchange devices have complex structures and high maintenance costs.
Design a heat exchange metering and energy-saving device for impregnated machinery, including a heat exchanger, a purification device, and an energy efficiency control device. Through efficient heat exchange and an automatic control system, achieve efficient utilization of waste gas and energy-saving operation.
It improves heat exchange efficiency, reduces energy waste, lowers maintenance costs, extends the service life of heat exchangers, and enables precise energy management.
Smart Images
Figure CN223983900U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The application relates to a heat exchange metering energy-saving device for an impregnation machine and relates to the technical field of paper processing equipment production. BACKGROUND
[0002] The impregnation machine is an industrial equipment for film paper production, and paper needs to be impregnated, coated and dried in the production process. Taking a melamine impregnation machine production line as an example, high-temperature waste gas is generated in the process of drying impregnated paper, and the waste gas contains a large amount of water vapor, solvent and volatile particles. If the waste gas is not discharged, the drying effect will be affected. However, if the waste gas is directly discharged, a large amount of heat will be taken away, resulting in energy waste. Therefore, the market needs a heat exchange device for impregnation machines, which is simple in structure, high in heat exchange efficiency and has metering energy-saving function. SUMMARY
[0003] The application aims to provide a heat exchange device for impregnation machines, which is simple in structure, high in heat exchange efficiency and has metering energy-saving function.
[0004] In view of the above technical problems, the application provides a heat exchange metering energy-saving device for an impregnation machine, which comprises a heat exchanger, a purification device and an energy efficiency control device. A fresh air inlet is arranged at the upper left side of the box body of the heat exchanger, and a fan is arranged on the fresh air inlet. The box body outside the fan is of a frame structure, and filter screens that can be removed and cleaned are arranged on the four ventilation openings of the frame. A waste gas inlet is arranged at the bottom of the box body, a fresh air outlet is arranged at the left side of the waste gas inlet, and a waste gas outlet is arranged at the top of the box body. A jet pipe group of the purification device is arranged at the top or bottom of the heat exchanger, and jet holes are arranged on the air pipes of the jet pipe group. High-pressure air is sprayed from the jet holes to clean and blow the waste gas channels of the heat exchange plates. The jet pipe group is controlled to work through an electromagnetic valve. A first flow pressure sensor of the energy efficiency control device is arranged on the waste gas outlet, a second flow pressure sensor of the energy efficiency control device is arranged on the fresh air outlet, and a control valve is further arranged on the fresh air outlet. Four temperature control sensors of the energy efficiency control device are arranged on the fresh air inlet, the fresh air outlet, the waste gas inlet and the waste gas outlet respectively. The energy efficiency control device automatically adjusts the air volume of the fan according to the production process and energy-saving needs, calculates the best energy-saving operation program according to the detection data to ensure the heat exchange efficiency. In the case of the same production process, the same product, the same output and the same time period, the control valve and the fan of the hot air outlet are opened and closed respectively, the energy-saving efficiency and the energy-saving energy consumption benefit calculated by the master control model can be calibrated and verified, and the error between the energy-saving efficiency and the energy-saving energy consumption benefit calculated by the master control model and the actual measurement can be accurately controlled within 0.2% in the actual test.
[0005] Preferably, the heat exchanger is internally provided with a first heat exchanger and a second heat exchanger; the first heat exchanger and the second heat exchanger work on top of each other; the material of the first heat exchanger and the second heat exchanger is thin stainless steel plate or thin aluminum plate. The exhaust gas passes through the first heat exchanger and the second heat exchanger from bottom to top. The fresh air is filtered through the filter screen and then blown into the second heat exchanger from left to right, and then blown out from right to left through the first heat exchanger. The fresh air absorbs heat energy through the first heat exchanger and the second heat exchanger.
[0006] Preferably, the heat exchanger is arranged at the top of the oven, and the exhaust gas inlet at the bottom of the heat exchanger box is communicated with the exhaust port of the oven; the fresh air outlet at the bottom of the heat exchanger box is communicated with the fresh air port of the oven.
[0007] Preferably, the heat exchanger on the production line is controlled by the energy efficiency control device.
[0008] Preferably, the energy efficiency control device automatically starts the blowing program to clean the attachments on the heat exchange plate when the exchange energy efficiency is lower than the set value.
[0009] Preferably, the front end face of the box body is provided with a movable door, and the rear end face of the box body is provided with a rear movable door, and the movable door and the rear movable door are symmetrically arranged. A track is arranged between the heat exchanger and the box body. When the two doors are opened, the heat exchange plate of the heat exchanger can be pulled out for cleaning. Advantages
[0010] Based on the above technical scheme, the heat exchange metering energy-saving device of the impregnation machine has at least one of the following advantages:
[0011] 1. The structure is reasonable, the cost recovery period is short, the effect is obvious, the heat exchange efficiency can reach more than 38%, the waste of heat is effectively avoided, and the service life of the heat exchanger is effectively guaranteed;
[0012] 2. The fresh air fan is surrounded by the filter screen, the area of the filter screen is several times that of the fresh air, and the filter screen can be cleaned for a long time; the maintenance cost and the labor maintenance intensity are saved;
[0013] 3. The structure is compact and small, the heat exchange box is located directly above the exhaust port of the oven, and the modification of the production line is small when the heat exchange box is installed, which saves time and labor;
[0014] 4. The heat exchange box is located directly above the exhaust port of the oven and closely contacts with the oven, the exhaust gas directly enters the heat exchange box, and the hot air also directly enters the oven, which eliminates the heat loss of the pipeline and greatly improves the energy-saving efficiency;
[0015] 5. The structure is ingenious and simple, the computer automatically controls and automatically blows and cleans; the two doors are opened, the heat exchanger is pulled out for manual cleaning, which is easy to maintain and saves maintenance cost and labor maintenance intensity;
[0016] 6. The hot air outlet is provided with a control valve, the main control computer communicates with the gas meter in real time to read the instantaneous flow and cumulative flow of the gas, and the environmental temperature, hot air temperature, hot exhaust gas temperature, low temperature exhaust gas temperature, exhaust gas pressure, exhaust gas flow are transmitted to the main control computer in real time, so that the thermal efficiency and heat consumption can be automatically calculated, and the energy saving income can be displayed in real time; the main control computer can judge whether the fan speed of each temperature zone of the production line and the main exhaust fan speed are reasonable in real time, and recommend more appropriate values to assist technicians in energy management;
[0017] 7. In the limited space, the heat exchanger is stacked twice up and down, which fully exchanges heat and improves the hot air temperature, and the efficiency is further improved;
[0018] 8. The thermal efficiency and heat consumption can be automatically calculated, and the energy saving income can be displayed in real time. BRIEF DESCRIPTION OF DRAWINGS
[0019] Figure 1 is a working schematic diagram of the heat exchange metering energy-saving device of the impregnation machine.
[0020] Figure 2 is a purification device structure diagram of the heat exchange metering energy-saving device of the impregnation machine.
[0021] Figure 3 is a schematic diagram of the energy efficiency control device of the heat exchange metering energy-saving device of the impregnation machine.
[0022] Figure 4 is a box structure diagram of the heat exchange metering energy-saving device of the impregnation machine.
[0023] Figure 5 is an oven and heat exchanger installation structure diagram of the heat exchange metering energy-saving device of the impregnation machine.
[0024] MAIN PART SYMBOL EXPLANATION
[0025] 1-heat exchanger; 2-box; 3-fresh air inlet; 4-fan; 5-frame; 6-filter screen; 7-exhaust gas inlet; 8-fresh air outlet; 9-exhaust gas outlet; 10-movable door; 11-rear movable door; 21-purification device; 22-jet pipe group; 23-jet hole; 24-heat exchange plate; 25-electromagnetic air valve; 31-energy efficiency control device; 32-temperature control sensor; 36-first flow pressure sensor; 37-control valve; 38-second flow pressure sensor; 39-oven; 40-first heat exchanger; 41-second heat exchanger. DETAILED DESCRIPTION
[0026] In order to make the purpose, technical scheme and advantages of the present application clearer, the following will be further described in detail with specific examples and with reference to the drawings.
[0027] As Figure 1 shown, a heat exchange metering energy-saving device for immersion machine, comprising a heat exchanger 1, purification device 21 and energy efficiency control device 31. The upper left side of the box 2 of the heat exchanger 1 is provided with fresh air inlet 3, the fresh air inlet 3 is provided with fan 4; the box 2 outside the fan 4 is frame 5 structure, the four ventilation openings of the frame 5 are provided with removable cleaning filter screen 6. The bottom of the box 2 is provided with exhaust gas inlet 7, the left side of the exhaust gas inlet 7 is provided with fresh air outlet 8, the top of the box 2 is provided with exhaust gas outlet 9. As Figure 2 shown, the jet pipe group 22 of the purification device 21 is arranged at the top or bottom of the heat exchanger 1, the air pipe of the jet pipe group 22 is provided with jet hole 23, the high pressure air sprayed from the jet hole 23 blows and cleans the exhaust gas channel of the heat exchange plate 24; the jet pipe group 22 is controlled by electromagnetic air valve 25. As Figure 3 shown, the first flow pressure sensor 36 of the energy efficiency control device 31 is arranged on the exhaust gas outlet 9; the second flow pressure sensor 38 of the energy efficiency control device 31 is arranged on the fresh air outlet 8; the control valve 37 of the energy efficiency control device is arranged on the fresh air outlet 8; the four temperature control sensors 32 of the energy efficiency control device 31 are arranged on the fresh air inlet 3, the fresh air outlet 8, the exhaust gas inlet 7 and the exhaust gas outlet 9 respectively. The energy efficiency control device 31 automatically adjusts the air volume of the fan 4 according to the production process and energy saving needs and calculates the best energy saving operation program to ensure the heat exchange efficiency. In the case of the same production process, the same product, the same output and the same time period, the control valve 37 and the fan 4 of the hot air outlet are opened and closed respectively, which can correct and verify the energy saving efficiency calculated by the main control model and the actual energy saving benefit, and the error between the energy saving efficiency calculated by the main control model and the actual energy saving benefit in the actual test can be accurately controlled within 0.2%. As Figure 3 shown, the heat exchanger 1 is provided with first heat exchanger 40 and second heat exchanger 41; the first heat exchanger 40 and the second heat exchanger 41 work on top of each other, the material of the first heat exchanger 40 and the second heat exchanger 41 is thin stainless steel plate or thin aluminum plate. The exhaust gas passes through the first heat exchanger 40 and the second heat exchanger 41 from bottom to top. The fresh air is filtered by the filter screen 6 and blown into the second heat exchanger 41 from left to right, then blown out from right to left through the first heat exchanger 40, and the fresh air absorbs heat energy through the first heat exchanger 40 and the second heat exchanger 41. The energy efficiency control device 31 finds that the exchange efficiency is lower than the set value by calculation, and automatically starts the blowing program to clean the attachments on the heat exchange plate 24. As Figure 4 shown, the front end face of the box 2 is provided with movable door 10, the rear end face of the box 2 is provided with rear movable door 11, the movable door 10 and the rear movable door 11 are symmetrically arranged. The heat exchanger 1 and the box 2 are provided with a track. When the two doors are opened, the heat exchange plate of the heat exchanger 1 can be pulled out for cleaning.
[0028] The above-described specific embodiments further illustrate the purpose, technical solutions and beneficial effects of the present application, and it should be understood that the above-described specific embodiments are merely examples of the present application and are not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims
1. A heat exchange metering energy saving device for immersion in a machine, characterized in that, The application relates to a heat exchanger (1), which is characterized in that a fresh air inlet (3) is arranged on the upper left side of a box (2) of the heat exchanger (1); a fan (4) is arranged on the fresh air inlet (3); the box (2) outside the fan (4) is a frame (5) structure; detachable and cleanable filter screens (6) are arranged on four air vents of the frame (5); a waste gas inlet (7) is arranged on the bottom of the box (2); a fresh air outlet (8) is arranged on the left side of the waste gas inlet (7); and a waste gas outlet (9) is arranged on the top of the box (2); a purifying device (21) is arranged on the top or the bottom of the heat exchanger (1); air pipes (22) of the purifying device (21) are provided with air injection holes (23); high-pressure air in the air injection holes (23) blows and cleans waste gas channels of heat exchange plates (24); the air pipes (22) are controlled by electromagnetic air valves (25); a flow pressure sensor (36) of an energy efficiency control device (31) is arranged on the waste gas outlet (9); a first flow pressure sensor (38) of the energy efficiency control device (31) is arranged on the fresh air outlet (8); a second flow pressure sensor (36) of the energy efficiency control device (31) is arranged on the fresh air outlet (8); a control valve (37) of the energy efficiency control device (31) is arranged on the fresh air outlet (8); four temperature control sensors (32) of the energy efficiency control device (31) are respectively arranged on the fresh air inlet (3), the fresh air outlet (8), the waste gas inlet (7) and the waste gas outlet (9); the energy efficiency control device (31) automatically adjusts the air volume of the fan (4) according to the production energy-saving requirement and calculates the best energy-saving operation program to ensure the heat exchange efficiency; in the case of the same production process, the same product, the same output and the same time period, the control valve (37) and the fan (4) of the hot air outlet are respectively opened and closed, the energy-saving efficiency and the energy-saving energy consumption benefit calculated by the master control model can be calibrated and verified, and the error between the energy-saving efficiency and the energy-saving energy consumption benefit calculated by the master control model and the actual measurement can be accurately controlled within 0.2%. The heat exchanger (1) is provided with a first heat exchanger (40) and a second heat exchanger (41); the first heat exchanger (40) and the second heat exchanger (41) work in a mutual up-down stacking mode; the materials of the first heat exchanger (40) and the second heat exchanger (41) are thin stainless steel plates or thin aluminum plates; waste gas passes through the first heat exchanger (40) and the second heat exchanger (41) from bottom to top; fresh air is filtered through the filter screens (6) and then blown into the second heat exchanger (41) from left to right, and then blown out of the first heat exchanger (40) from right to left, so that the fresh air absorbs heat energy through the first heat exchanger (40) and the second heat exchanger (41). The heat exchanger (1) is arranged on the top of an oven; the waste gas inlet (7) on the bottom of the box (2) of the heat exchanger (1) is communicated with a waste gas outlet of the oven; and the fresh air outlet (8) on the bottom of the box (2) of the heat exchanger (1) is communicated with a fresh air inlet of the oven. A plurality of heat exchangers (1) on a production line are centrally controlled by the energy efficiency control device (31).
2. The heat exchange metering energy saving device for immersion machinery according to claim 1, characterized in that: 3. The energy saving device of claim 1, wherein the energy saving device is characterized in that: 4. The energy saving device of claim 3, wherein the energy saving device is characterized in that: 5. The energy saving device of claim 1, wherein the energy saving device is characterized in that: The energy efficiency control device (31) automatically starts a blowing program to blow and clean the adhering matters on the heat exchange plates (24) by calculating that the exchange energy efficiency is lower than the set value.
6. The energy saving device of claim 1, wherein the energy saving device is characterized in that: The front end face of the box (2) is provided with a movable door (10), the rear end face of the box (2) is provided with a rear movable door (11), the movable door (10) and the rear movable door (11) are symmetrically arranged; a track is arranged between the heat exchanger (1) and the box (2); when the two doors are opened, the heat exchange plates of the heat exchanger (1) can be pulled out for cleaning.