Efficient energy-saving device of dipping machine

Abstract

The utility model provides a high-efficiency energy-saving device of a dipping machine. The high-efficiency energy-saving device comprises a box body, a first heat exchanger, a second heat exchanger, a third heat exchanger, a fan, a control air door and a work control device, the first heat exchanger, the second heat exchanger and the third heat exchanger in the box body are sequentially arranged in an overlapped mode. The fan is arranged in the air bellow, and an air outlet of the fan is communicated with an air inlet of the second heat exchanger; an exhaust port of the first heat exchanger is formed in the upper part of the bellows. The control air door is controlled by the air cylinder to open and close. According to the working process of the working control device, when the first heat exchanger, the second heat exchanger and the third heat exchanger are connected in series and work in a three-superposition mode, the air door is controlled to be in a closed working state. When the temperature control device of the work control device detects that the temperature of waste gas in the first heat exchanger is too low, the air cylinder rapidly opens the control air door, and condensation, crystallization and scaling caused by the fact that the exhausted waste gas in the heat exchanger is too cold are prevented.

Description

Technical Field

[0001] This utility model relates to a highly efficient and energy-saving device for impregnation machinery, and pertains to the field of paper processing equipment production technology. Background Technology

[0002] An impregnation machine is an industrial piece of equipment used in the production of adhesive-coated paper. During the production process, the paper needs to be impregnated, coated with adhesive, and dried. Taking a melamine impregnation production line as an example, the drying process generates high-temperature waste gas containing a lot of water vapor, solvents, and volatile particles. If this waste gas is not discharged, it will affect the drying effect; however, if it is discharged directly, a significant amount of heat will be lost, leading to energy waste. Therefore, the market needs a dedicated heat exchange device for impregnation machinery that is simple in structure and has high heat exchange efficiency. Existing heat exchangers have a stacked structure, which suffers from significant losses in fresh air pressure and flow, as well as high energy consumption, requiring further improvement. The interior of the heat exchanger condenses, crystallizes, and scales due to the excessively cold exhaust gas. Blockage inside the heat exchanger and corrosion from condensed acidic water directly affect heat exchange efficiency and service life. Existing heat exchangers lack a secondary fresh air temperature and flow control device, making it difficult to achieve precise temperature control for high efficiency and energy saving. Therefore, a new, highly efficient, and energy-saving device with a novel structure is needed to meet market demands. Summary of the Invention

[0003] The purpose of this invention is to provide a heat exchange device for impregnation machinery with a simple structure and high heat exchange efficiency to meet market needs.

[0004] In view of the above-mentioned technical problems, this utility model provides a high-efficiency and energy-saving device for impregnation machinery, including a housing, a first heat exchanger, a second heat exchanger, a third heat exchanger, a fan, a control damper, and a working control device. The first, second, and third heat exchangers are arranged inside the housing; they are stacked sequentially. Inspection doors are provided on the left and right sides of the housing. The fan is located inside the housing, and its exhaust port is connected to the inlet of the second heat exchanger; the exhaust port of the first heat exchanger is located at the top of the housing. The control damper is located on the housing and is controlled to open and close by a cylinder. The working control device operates when the first, second, and third heat exchangers are connected in series and stacked, with the control damper in a closed state. When the temperature control device of the working control unit detects that the waste gas temperature in the first heat exchanger is too low, the cylinder quickly opens the control damper; the fan in the air box draws in fresh air from outside, the first heat exchanger stops heat exchange, and the temperature of the discharged waste gas rises.

[0005] Preferably, the working device for controlling the damper is an electric lever. The working control device automatically adjusts the opening angle of the damper according to the precise temperature control requirements.

[0006] Preferably, a removable and washable filter screen is provided on the outer frame of the bellows.

[0007] Preferably, the air leaks between the first heat exchanger and the second and third heat exchangers are sealed with a removable, high-temperature resistant brush.

[0008] Preferably, the internal frame of the enclosure is a modular, stacked, and combined structure to facilitate rapid maintenance and large-scale production.

[0009] Based on the above technical solution, the present invention provides a high-efficiency and energy-saving device for impregnation machinery, which has at least one of the following beneficial effects:

[0010] 1. The heat exchanger is stacked three times in a limited space, which not only fully exchanges heat but also increases the temperature of the hot air, thus further improving efficiency;

[0011] 2. The top of the housing is equipped with an exhaust outlet, and an axial flow fan is built-in, which can effectively combine positive and negative pressure.

[0012] 3. Fresh air enters the axial flow fan from the fresh air inlet through the first heat exchange unit due to negative pressure. The fresh air is drawn in under negative pressure. The air loss of this design is about 55%, and the air loss of the fan is relatively small.

[0013] 4. The energy-saving cabinet is designed with a fresh air outlet, and the noise level during operation is about 50 decibels, which is lower than the traditional 72 decibels, and the noise reduction effect is obvious.

[0014] 5. Temperature sensors are installed at the inlet and outlet of fresh air and the inlet and outlet of exhaust gas respectively. When the energy efficiency is reduced by the temperature sensors, the first and second maintenance doors are opened for maintenance.

[0015] 6. The internal frame structure of the box is a modular stacked combination structure, which makes it easy to remove the three internal heat exchange units and use high-pressure air to blow them out for maintenance.

[0016] 7. The heat exchanger's interior can become clogged, crystallized, and scaled due to excessively cold exhaust gas. This internal blockage and corrosion from the condensed acidic water directly impact heat exchange efficiency and lifespan. Temperature sensors are installed at both the fresh air inlet and outlet, as well as the exhaust gas inlet and outlet. When the exhaust gas outlet temperature is too low, the temperature can be adjusted to a suitable level, significantly extending the heat exchanger's lifespan. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the operation of a high-efficiency and energy-saving device for an impregnation machine according to this utility model.

[0018] Figure 2 yes Figure 1 A schematic diagram of the stacked heat exchangers inside the box.

[0019] Figure 3 This is a structural diagram of the frame structure of a high-efficiency and energy-saving device for impregnation machinery according to this utility model.

[0020] 1-First heat exchanger; 2-Second heat exchanger; 3-Third heat exchanger; 5-Casing; 6-Fan; 8-Blower box; 15-Inspection door; 21-Control damper; 22-Cylinder; 27-Working control device; 32-Filter screen; 33-Frame. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description is provided in conjunction with specific embodiments and the accompanying drawings.

[0022] like Figure 1 , Figure 2 As shown, a high-efficiency energy-saving device for impregnation machinery includes a housing 5, a first heat exchanger 1, a second heat exchanger 2, a third heat exchanger 3, a fan 6, a control damper 21, and a working control device 27. The first heat exchanger 1, the second heat exchanger 2, and the third heat exchanger 3 are arranged inside the housing 5. The first heat exchanger 1, the second heat exchanger 2, and the third heat exchanger 3 are stacked sequentially. Inspection doors 15 are provided on the left and right sides of the housing 5. The fan 6 is located inside the air box 8 of the housing 5. The exhaust port 9 of the fan 6 is connected to the air inlet of the second heat exchanger 2. The exhaust port 10 of the first heat exchanger 1 is located at the upper part of the air box 8. The control damper 21 is located on the air box 8 and is controlled to open and close by a cylinder 22. The working process of the operating control device 27 is as follows: when the first heat exchanger 1, the second heat exchanger 2, and the third heat exchanger 3 are connected in series and stacked, the control damper 21 is in a closed working state. When the temperature control device of the operating control device 27 detects that the temperature of the first heat exchanger 1 is too low, the cylinder 22 quickly opens the control damper 21, the fan 6 in the air box 8 draws in fresh air from outside, and the first heat exchanger 1 stops working. The operating device of the control damper 21 is an electric pull rod. The operating control device 27 automatically adjusts the opening angle of the control damper 21 according to the precise temperature control requirements. A removable and washable filter screen 32 is installed on the outer frame of the air box 8. The air leakage between the first heat exchanger 1 and the second and third heat exchangers 3 is sealed with a removable and cleanable high-temperature resistant brush. Figure 3 As shown, the internal frame 33 of the box 5 has a modular stacked structure to facilitate rapid maintenance and large-scale production.

[0023] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above description is only a specific embodiment of this utility model and is not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A high-efficiency and energy-saving device for impregnation machinery, characterized in that, include: The housing (5) is equipped with a first heat exchanger (1), a second heat exchanger (2) and a third heat exchanger (3); the first heat exchanger (1), the second heat exchanger (2) and the third heat exchanger (3) are stacked in sequence; inspection doors (15) are provided on the left and right sides of the housing (5). A fan (6) is installed inside the air box (8) of the housing (5); the exhaust port (9) of the fan (6) is connected to the air inlet of the second heat exchanger (2), and the exhaust port (10) of the first heat exchanger (1) is installed on the upper part of the air box (8). A control damper (21) is installed on the air box (8); the control damper (21) is controlled to open and close by a cylinder (22); The working process of the working control device (27) is as follows: when the first heat exchanger (1), the second heat exchanger (2), and the third heat exchanger (3) are connected in series and working in a triple superposition, the control damper (21) is in a closed working state; when the temperature control device of the working control device (27) detects that the temperature of the first heat exchanger (1) is too low, the cylinder (22) quickly opens the control damper (21), the fan (6) in the air box (8) draws in fresh air from outside, and the first heat exchanger (1) stops working.

2. The high-efficiency energy-saving device for impregnation machinery according to claim 1, characterized in that: The working device of the control damper (21) is an electric pull rod; the working control device (27) automatically adjusts the opening angle of the control damper (21) according to the temperature control requirements.

3. A high-efficiency energy-saving device for impregnation machinery according to claim 1 or 2, characterized in that: The outer frame of the air box (8) is provided with a removable and washable filter screen (32).

4. A high-efficiency energy-saving device for impregnation machinery according to claim 1 or 2, characterized in that: The air leaks between the first heat exchanger (1) and the second heat exchanger (2) and the third heat exchanger (3) are sealed with a removable and cleanable high-temperature resistant brush.

5. A high-efficiency energy-saving device for impregnation machinery according to claim 1 or 2, characterized in that: The internal frame (33) of the box (5) is a modular stacked combination structure to facilitate rapid maintenance and large-scale production.

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