Energy-saving drying device of dipping machine
Through the innovative design of combining drying boxes, circulating bellows and heat exchange devices, the problems of energy waste and poor heat exchange effects of drying devices on the impregnator production line are solved, and the drying effect of efficient energy saving and precise temperature control is achieved.
Patent Information
- Application Number
- CN202422484862.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-15
- Publication Date
- 2025-08-26
- Estimated Expiration
- 2034-10-15
AI Technical Summary
The drying device of the existing impregnator production line has problems such as serious energy waste and poor heat exchange effect.
The combined structure of drying box, circulating bellows, heat exchange devices and fresh air devices is adopted. The heat circulation and precise temperature control are realized through components such as air curtain, mixing fan, heating device and aluminum tube array heat exchanger to form an efficient and energy-saving drying system.
Significantly reduce heat loss, improve drying efficiency, reduce production costs, and achieve efficient and energy-saving effects.
Smart Images
Figure CN223269001U_ABST
Abstract
Description
Technical Field
[0001] The utility model discloses an energy-saving drying device for an impregnation machine, and relates to the technical field of paper processing equipment production. Background Art
[0002] Impregnation machines are industrial equipment used in the production of coated paper. During the production process, paper is impregnated, coated, and dried. For example, a melamine impregnation machine production line is equipped with 6-10 drying ovens. Exhaust gases and steam generated during the production process must be continuously discharged at temperatures of around 120°C to 160°C, resulting in significant energy waste. To achieve energy conservation and emission reduction, energy-saving improvements to the drying equipment in the existing production line are necessary. Summary of the Invention
[0003] The purpose of the utility model is to provide a drying device with simple structure, high efficiency and energy saving.
[0004] In view of the above technical problems, the utility model provides an energy-saving drying device for an impregnation machine, comprising a drying box, a circulating bellows, a heat exchange device and a fresh air device. A group of blowing pipes are respectively provided on the upper and lower parts of the drying box body, and a plurality of air knives are provided on the blowing pipes; a blower is respectively provided on the front and rear end box openings of the drying box, and the blower is communicated with the blowing pipes, and the pressurized gas blown out from the air outlets at the upper and lower parts of the blower forms a wind curtain to prevent the hot air in the drying box from overflowing. The body of the circulating bellows is provided at the upper part of the drying box, and the top of the circulating bellows is communicated with the bottom of the drying box through a plurality of exhaust holes; a mixing fan is provided inside the circulating bellows, and the hot air outlet of the mixing fan is communicated with the blowing pipe. A heat collecting hood is provided on the air inlet of the mixing fan, and a heating device is provided at the lower part of the heat collecting hood. The heat exchanger is mounted on top of the circulating air box. Its intake duct, equipped with an air volume control valve, connects to the drying box. Its exhaust duct connects to the exhaust pipe. A fresh air heat exchange pipe is located within the heat exchanger. The high-pressure blower for the fresh air unit is mounted on the air inlet of the fresh air heat exchange pipe. The exhaust port of the fresh air heat exchange pipe is connected to an air volume control ring, which is mounted on the bottom of the heating unit. When the high-pressure blower operates, ambient temperature air is preheated by the heat exchanger and then ejected through the air volume control ring. The preheated fresh air is then heated by the heating unit and enters the mixing blower. The mixing blower mixes some of the hot exhaust gas from the circulating air box with the fresh air, which then enters the drying box's blower duct.
[0005] Preferably, several energy-saving drying devices work in series, and two adjacent drying boxes are connected by a flexible sealing ring; blowers are provided on the box openings of the front drying box and the end drying box.
[0006] Preferably, a temperature-controlled heater is provided inside the air knife.
[0007] Preferably, several energy-saving drying devices work in series, several adjacent heat exchange devices work in series with each other, and a flow regulating valve is provided on the fresh air heat exchange pipe.
[0008] Preferably, the heat exchange device is an aluminum tube array heat exchanger.
[0009] Beneficial effects
[0010] Based on the above technical solution, the utility model provides an energy-saving drying device for an impregnation machine, which has at least one of the following beneficial effects:
[0011] 1. The utility model provides an energy-saving drying device for an impregnation machine. The drying box, circulating air box, heat exchange device and fresh air device are integrated into a structure, and multiple groups work in series. The structure is simple and compact, with minimal exposed pipes, minimal heat loss and significant energy saving effects. This technology solves the technical problems of poor heat exchange effect and ineffective control of structural heat loss caused by temperature differences between the drying ovens in a centralized heat exchange device.
[0012] 2. A blower is installed on the opening of the drying box to effectively prevent the hot air in the drying box from overflowing, with obvious energy-saving effect;
[0013] 3. The exhaust port of the fresh air heat exchange pipe is connected to an air volume adjustment ring. After being preheated by the heat exchange device, the room temperature air is sprayed into the heat collecting cover at the air inlet of the mixing fan through the air volume adjustment ring. The pressure fresh air sprayed by the air volume adjustment ring is preheated twice by the heating device and then enters the mixing fan. The mixing ratio and temperature of the fresh air and hot exhaust gas are adjusted by controlling the flow rate of the fresh air in the circulating wind box of the air volume adjustment ring. At the same time, a temperature control heater is set inside the air knife, which ensures precise temperature control and high drying efficiency.
[0014] 4. The energy-saving drying devices work in series, and the adjacent heat exchange devices work in series with each other, which increases the heat exchange temperature of the fresh air and improves the heat exchange effect;
[0015] 5. The heat exchange device is an aluminum tube array heat exchanger, which saves production costs. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 This is a working schematic diagram of an energy-saving drying device of an impregnation machine according to the utility model.
[0017] Figure 2 It is a top view of an energy-saving drying device of an impregnation machine according to the utility model.
[0018] Figure 3 This is a schematic diagram of a production line of an energy-saving drying device for an impregnation machine according to the present invention.
[0019] Main accessories symbol description
[0020] 101-drying box; 102-blowing pipe; 103-air knife; 104-blower; 201-circulating air box; 202-mixing fan; 203-hot air outlet; 204-air inlet; 205-heating device; 206-heat collecting cover; 301-heat exchange device; 302-intake pipe; 303-exhaust pipe; 304-fresh air heat exchange pipe; 305-exhaust pipe; 306-air volume adjustment ring; 401-fresh air device; 402-high-pressure fan; 501-flexible sealing ring; 502-front-end drying box; 503-end drying box; 504-temperature-controlled heater; 505-aluminum tube array heat exchanger; 506-flow regulating valve. DETAILED DESCRIPTION
[0021] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings.
[0022] Example
[0023] like Figure 1 、 Figure 2As shown, an energy-saving drying device for an impregnation machine includes a drying box 101, a circulating air box 201, a heat exchange device 301 and a fresh air device 401. A set of blowing pipes 102 are respectively provided at the upper and lower parts of the drying box 101, and five sets of air knives 103 are provided on the blowing pipes 102. A blower 104 is respectively provided at the front and rear end of the drying box 101, and the blower 104 is communicated with the blowing pipe 102; the pressurized gas blown out from the air outlets at the upper and lower parts of the blower 104 forms an air curtain to prevent the hot air in the drying box 101 from overflowing. The body of the circulating air box 201 is arranged at the upper part of the drying box 101, and the top of the circulating air box 201 is communicated with the bottom of the drying box 101 through a plurality of exhaust holes. The circulating air box 201 is equipped with a mixing fan 202. The hot air outlet 203 of the mixing fan 202 is connected to the blowing pipe 102. The air inlet 204 of the mixing fan 202 is equipped with a heat collecting cover 206, and the lower portion of the heat collecting cover 206 is provided with a heating device 205. The heat exchange device 301 is installed at the top of the circulating air box 201. The intake pipe 302 of the heat exchange device 301 is connected to the drying box 101 and is equipped with an air volume regulating valve. The exhaust pipe 305 of the heat exchange device 301 is connected to the exhaust pipe 303. The heat exchange device 301 is equipped with a fresh air heat exchange pipe 304. The high-pressure fan 402 of the fresh air device 401 is installed at the air inlet of the fresh air heat exchange pipe 304. The exhaust port of the fresh air heat exchange pipe 304 is connected to the air volume regulating ring 306, and the air volume regulating ring 306 is installed at the lower portion of the heating device 205. The high-pressure blower 402 of the fresh air device 401 is working, and the normal temperature air is preheated by the heat exchange device 301 and then ejected through the air volume adjustment ring 306. The preheated fresh air is heated by the heating device 205 and then enters the mixing blower 202. The mixing blower 202 mixes part of the hot exhaust gas in the circulating air box 201 with the fresh air and then enters the blowing pipe 102 of the drying box 101. Figure 1 As shown, a temperature control heater 504 is provided inside the air knife 103 to achieve precise temperature control. Figure 2 As shown, the heat exchange device 301 is installed on the top of the circulating wind box 201. The heat exchange device 301 is an aluminum tube array heat exchanger 505. Figure 3 As shown, seven sets of energy-saving drying devices operate in series. Adjacent drying boxes 101 are connected by flexible sealing rings 501. Blowers 104 are installed at the openings of the front drying box 502 and the rear drying box 503 to effectively prevent heat loss in the drying boxes 101. Two adjacent heat exchange devices 301 operate in series, and the fresh air heat exchange pipe 304 is equipped with a flow control valve 506.
[0024] At this point, the embodiments of the present utility model have been introduced.
[0025] The specific embodiments described above further illustrate the purpose, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.
Claims
1. An energy-saving drying device for an impregnation machine, characterized in that: include: A drying box (101) is provided with a group of blowing pipes (102) at the upper and lower parts of the box body, and a plurality of air knives (103) are provided on the blowing pipes (102); a blower (104) is provided at the front and rear box openings of the drying box (101), and the blower (104) is communicated with the blowing pipes (102). Pressurized gas blown out from the air outlets at the upper and lower parts of the blower (104) forms an air curtain to prevent hot air in the drying box (101) from overflowing; A circulating air box (201), the box body of which is arranged at the upper part of the drying box (101), the top of the circulating air box (201) and the bottom of the drying box (101) are connected through a plurality of exhaust holes; a mixing fan (202) is arranged inside the circulating air box (201), the hot air outlet (203) of the mixing fan (202) is connected to the blowing pipe (102), a heat collecting cover (206) is arranged on the air inlet (204) of the mixing fan (202), and a heating device (205) is arranged at the lower part of the heat collecting cover (206); A heat exchange device (301) is provided on top of the circulating air box (201); an air intake pipe (302) of the heat exchange device (301) is in communication with the drying box (101); an air volume regulating valve is provided on the air intake pipe (302); an exhaust pipe (305) of the heat exchange device (301) is in communication with a waste pipe (303); a fresh air heat exchange pipe (304) is provided inside the heat exchange device (301); A fresh air device (401) has a high-pressure blower (402) disposed on the air inlet of the fresh air heat exchange pipe (304); an air volume regulating ring (306) is connected to the air outlet of the fresh air heat exchange pipe (304); and the air volume regulating ring (306) is disposed at the lower portion of the heating device (205); when the high-pressure blower (402) of the fresh air device (401) is in operation, normal-temperature air is preheated by the heat exchange device (301) and ejected through the air volume regulating ring (306); the preheated fresh air is heated by the heating device (205) and then enters the mixing blower (202); the mixing blower (202) mixes part of the hot exhaust gas in the circulating air box (201) with the fresh air, and then the mixed air enters the blowing pipe (102) of the drying box (101).
2. The energy-saving drying device for an impregnation machine according to claim 1, characterized in that: Several energy-saving drying devices work in series, and two adjacent drying boxes (101) are connected via a flexible sealing ring (501); blowers (104) are provided on the box openings of the front drying box (502) and the end drying box (503).
3. An energy-saving drying device for an impregnation machine according to claim 1 or 2, characterized in that: A temperature-controlled heater (504) is provided inside the air knife (103).
4. The energy-saving drying device for an impregnation machine according to claim 2, characterized in that: Several energy-saving drying devices operate in series, and several adjacent heat exchange devices (301) operate in series with each other. A flow regulating valve (506) is provided on the fresh air heat exchange pipe (304).
5. An energy-saving drying device for an impregnation machine according to claim 1 or 2, characterized in that: The heat exchange device (301) is an aluminum tube array heat exchanger (505).