Residual steam heat energy recovery device for medium-pressure steam of setting machine

Abstract

The utility model provides a heat energy recovery device for residual medium-pressure steam of a setting machine, which relates to the technical field of setting machines and comprises a box body, an air heat energy exchange component is arranged in the box body, an air inlet is arranged at one end of the box body, and a centrifugal fan is arranged at the other end of the box body and connected with an air outlet component. The air outlet assembly comprises a first air spraying plate and a second air spraying plate; when the centrifugal fan works, natural air flows through the air heat energy exchange assembly for heat exchange to form hot air, and the hot air enters the air outlet assembly and is sprayed out from the upper side and the lower side of the preheating area. The device has the beneficial effects that the residual medium-pressure steam in the drying oven is recovered and input into the wind heat energy exchange assembly, so that the temperature of the wind heat energy exchange assembly is increased; the sucked natural air exchanges heat with the air heat energy exchange assembly to form hot air, and the hot air is conveyed to the inlet of the drying oven to preliminarily preheat the input cloth, so that the later drying efficiency is improved, the heat of the drying oven is reused, and the energy waste is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of setting machines, in particular to a device for recovering the heat energy of medium-pressure steam surplus steam in a setting machine. Background Art

[0002] A setting machine is a key device for post-treatment of textile printing and dyeing. A heat setting machine is a device that uses hot air to dry and finish fabrics and make them take shape. Generally, the temperature of the hot air required in the heat setting machine is about 200°C. The setting machines in the prior art include a plurality of heating chambers arranged side by side for heating fabrics. After the fabrics are processed at high temperature, the remaining heat in the heating chambers will be directly discharged into the air, resulting in waste of energy.

[0003] In the prior art, in the technical solution of a Chinese patent document (publication number: CN206768436U, patent name: Waste heat recovery system for setting machine), it is disclosed that "connecting a setting machine and a dyeing machine cylinder, including a heat exchanger, a water collecting tank, a hot water heat preservation cylinder, a water pump I, and a water pump II; the heat exchanger is communicated with the waste gas conveying pipe fitting of the setting machine; the water collecting tank is communicated with the water inlet end of the heat exchange pipe in the heat exchanger through a pipeline I, and the water pump I is installed on the pipeline I; the water inlet end of the hot water heat preservation cylinder is communicated with the water outlet end of the heat exchange pipe in the heat exchanger through a pipeline II, the water outlet end of the hot water heat preservation cylinder is communicated with the dyeing machine cylinder through a pipeline III, and the water pump II is installed on the pipeline III; a drain port is opened on the bottom wall of the heat exchanger."

[0004] Combined with the description content of the patent document and the attached drawings, the high-temperature waste gas in the setting machine enters the heat exchanger through the waste gas conveying pipe fitting to heat the water passing through the heat exchange pipe. The heated water enters the hot water heat preservation cylinder, but the long pipeline is prone to heat loss, resulting in the inability to fully utilize the heat generated by the setting machine. Content of the Utility Model

[0005] The utility model overcomes the defects in the prior art and provides a device for recovering the heat energy of medium-pressure steam surplus steam in a setting machine, which preliminarily preheats the fabric in the preheating area to facilitate improving the later drying efficiency.

[0006] In order to solve the above technical problems, the utility model is realized through the following technical solutions:

[0007] A device for recovering the heat energy of residual medium-pressure steam in a setting machine, comprising a box body. The box body is provided with a high-temperature condensate inlet pipe, and a wind-heat energy exchange component is arranged inside the box body. The high-temperature condensate inlet pipe is communicated with the wind-heat energy exchange component. One end of the box body is provided with an air inlet for cold air to enter, and a centrifugal fan is correspondingly arranged at the other end of the box body. The centrifugal fan is connected with an air outlet component. The air outlet component includes a first air spraying plate and a second air spraying plate. A preheating area for the fabric to enter and exit is formed between the first air spraying plate and the second air spraying plate. When the centrifugal fan works, natural wind is sucked into the box body and flows through the wind-heat energy exchange component for heat exchange to form hot air. The hot air enters the air outlet component and finally sprays out from the first air spraying plate and the second air spraying plate to preheat the fabric input into the preheating area.

[0008] Furthermore, the box body is provided with a low-temperature condensate outlet pipe, and the low-temperature condensate outlet pipe is located near the bottom end of the box body.

[0009] Furthermore, the wind-heat energy exchange component includes a plurality of wind-heat energy exchangers. Adjacent wind-heat energy exchangers are communicated with each other through connecting pipes. The wind-heat energy exchanger close to the centrifugal fan is communicated with the high-temperature condensate inlet pipe, and the wind-heat energy exchanger close to the air inlet is communicated with the low-temperature condensate outlet pipe.

[0010] Furthermore, the wind-heat energy exchanger includes a conveying pipe fitting. The conveying pipe fitting is connected with the connecting pipe, and a plurality of fins are arranged in an array and connected to the conveying pipe fitting.

[0011] Furthermore, a flow channel is formed between adjacent fins, and the flow direction of the flow channel is the same as the flow path of the natural wind.

[0012] Furthermore, one end of the centrifugal fan is provided with an air inlet, and the other end of the centrifugal fan is provided with an air outlet. The air outlet is communicated with the air outlet component. A wind gathering plate is arranged at the end of the air inlet, and the wind gathering plate is concave along the air inlet to form a converging surface.

[0013] Furthermore, the air outlet component further includes a ventilation pipe. A branch pipe is connected to the ventilation pipe deviating from the middle. One end of the ventilation pipe is connected with the centrifugal fan, and the other end of the ventilation pipe is connected with the first air spraying plate and the second air spraying plate.

[0014] Furthermore, a plurality of first air spraying holes are distributed on the lower surface of the first air spraying plate, and a plurality of second air spraying holes are distributed on the upper surface of the second air spraying plate; the first air spraying holes and the second air spraying holes are arranged oppositely.

[0015] Compared with the prior art, the beneficial effects of the present utility model are:

[0016] The medium-pressure steam remaining in the recovery oven is input into the wind and heat energy exchange component to raise the temperature of the wind and heat energy exchange component; the centrifugal fan is started to make the inhaled natural wind exchange heat with the wind and heat energy exchange component to form hot air, and the hot air is transported to the inlet of the oven to preliminarily preheat the input fabric, which not only helps to improve the efficiency of later drying, but also reuses the heat of the oven and reduces energy waste. Description of the Drawings

[0017] The drawings are used to provide a further understanding of the present utility model and are used together with the embodiments of the present utility model to explain the present utility model, and do not constitute a limitation to the present utility model. In the drawings:

[0018] Figure 1 is the overall diagram of the medium-pressure steam residual heat recovery device of the stenter in the embodiment of the present utility model;

[0019] Figure 2 is the inner view of the box body in the embodiment of the present utility model;

[0020] Figure 3 is the schematic diagram of the wind and heat energy exchanger in the embodiment of the present utility model;

[0021] Figure 4 is the schematic diagram of the centrifugal fan in the embodiment of the present utility model;

[0022] Figure 5 is the schematic diagram of the air outlet component in the embodiment of the present utility model Figure 1 ;

[0023] Figure 6 is the schematic diagram of the air outlet component in the embodiment of the present utility model Figure 2 ;

[0024] Figure 7 is the schematic diagram of installing the recovery device to the stenter in the embodiment of the present utility model;

[0025] Figure 8 is the working flow chart of the medium-pressure steam residual heat recovery device of the stenter in the embodiment of the present utility model.

[0026] In the figures: 1 - box body, 101 - high-temperature condensate inlet pipe, 102 - low-temperature condensate outlet pipe, 103 - air inlet, 2 - wind and heat energy exchange component, 201 - wind and heat energy exchanger, 2011 - conveying pipe fitting, 2012 - fin, 202 - connecting pipe, 3 - centrifugal fan, 301 - air inlet, 302 - air outlet, 303 - wind gathering plate, 4 - air outlet component, 401 - ventilation pipe, 402 - branch pipe, 403 - first air spraying plate, 4031 - first air spraying hole, 404 - second air spraying plate, 4041 - second air spraying hole, 5 - fabric, 6 - oven. Detailed Embodiments

[0027] The preferred embodiments of the present utility model will be described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present utility model, and are not used to limit the present utility model.

[0028] As Figure 1 shown, a device for recovering the heat energy of medium-pressure steam waste in a stenter includes a box body 1. The box body 1 is provided with a high-temperature condensed water inlet pipe 101. A wind heat energy exchange component 2 is arranged inside the box body 1. The high-temperature condensed water inlet pipe 101 is communicated with the wind heat energy exchange component 2. An air inlet 103 for allowing natural wind to blow in is arranged at one end of the box body 1. A centrifugal fan 3 is correspondingly arranged at the other end of the box body 1. The centrifugal fan 3 is connected with an air outlet component 4. The air outlet component 4 includes a first air spraying plate 403 and a second air spraying plate 404 which are oppositely arranged. A preheating area for the fabric 5 to enter and exit is formed between the first air spraying plate 403 and the second air spraying plate 404; in combination with Figure 7 and Figure 8 viewing, the first air spraying plate 403 and the second air spraying plate 404 are arranged at the entrance of the drying oven 6 to preheat the fabric 5 to be input first; the preheating process is as follows: the fabric 5 is input at the preheating area, and the medium-pressure steam recovered from each drying oven 6 is input into the wind heat energy exchange component 2. When the centrifugal fan 3 works, the natural wind will flow through the wind heat energy exchange component 2 for heat exchange, making the natural wind rise in temperature to form hot air. The hot air enters the air outlet component 4 and is sprayed out on the upper and lower sides of the preheating area to preheat the fabric 5. This design makes full use of the last bit of heat energy of the medium-pressure steam recovered from the drying oven 6, reduces heat loss, and at the same time pre-dries the fabric 5 in advance before the stenter drying oven 6, which plays a very good auxiliary role in the temperature rise of the subsequent drying oven 6. It can also form a hot air curtain at the entrance of the drying oven 6, effectively preventing the phenomenon of inhaling cold air, achieving a better heat preservation effect on the drying oven 6, reducing the consumption of medium-pressure steam, and having a remarkable energy-saving effect.

[0029] Specifically, as Figures 1 to 2 shown, the box body 1 is provided with a low-temperature condensed water output pipe 102. The low-temperature condensed water output pipe 102 is located near the bottom end of the box body 1. The wind heat energy exchange component 2 includes a plurality of wind heat energy exchangers 201. Adjacent wind heat energy exchangers 201 are communicated with each other through a connecting pipe 202. The wind heat energy exchanger 201 near the air inlet 103 is communicated with the low-temperature condensed water output pipe 102. That is, when the medium-pressure steam enters the connected wind heat energy exchanger 201 through the high-temperature condensed water inlet pipe 101, the medium-pressure steam can be transferred to the next wind heat energy exchanger 201 through the connecting pipe 202, so that the medium-pressure steam is evenly introduced into a plurality of wind heat energy exchangers 201, facilitating the next heat exchange operation. After heat exchange, the medium-pressure steam with reduced temperature will be discharged from the low-temperature condensed water output pipe 102.

[0030] As Figure 3As shown, the wind heat exchanger 201 includes a conveying pipe fitting 2011. The conveying pipe fitting 2011 is connected to a connecting pipe 202. A number of fins 2012 are arranged adjacently to the conveying pipe fitting 2011. A flow passage is formed between adjacent fins 2012. The medium-pressure steam input into the wind heat exchanger 201 will flow through the conveying pipe fitting 2011 to transfer heat to the fins 2012, so that the natural wind forms hot air when passing through the flow passage, completing the heat exchange operation. And the flow passage is arranged along the natural wind flow path. This design can ensure the contact area between the natural wind and the wind heat exchange component 2 to the greatest extent and improve the heat exchange efficiency.

[0031] As Figure 4 shown, one end of the centrifugal fan 3 is provided with an air inlet 301, the other end of the centrifugal fan 3 is provided with an air outlet 302, the air outlet 302 is communicated with the air outlet component 4, and a wind gathering plate 303 is arranged at the end of the air inlet 301. The hot air formed after heat exchange enters from the air inlet 301 and finally enters the air outlet component 4 from the air outlet 302. Among them, the wind gathering plate 303 is concave along the air inlet 301 to form a converging surface. This design can gather the hot air scattered around the air inlet 301 and enter the air inlet 301, reducing the consumption of hot air.

[0032] As Figures 5 to 6 shown, the air outlet component 4 further includes a ventilation pipe 401. A branch pipe 402 is connected to the ventilation pipe 401 deviating from the middle end. One end of the ventilation pipe 401 is connected to the centrifugal fan 3, and the other end of the ventilation pipe 401 is connected to a first air spraying plate 403 and a second air spraying plate 404. A number of first air spraying holes 4031 are distributed on the lower surface of the first air spraying plate 403, and a number of second air spraying holes 4041 are distributed on the upper surface of the second air spraying plate 404. The first air spraying holes 4031 and the second air spraying holes 4041 are arranged oppositely. The fabric 5 is in the preheating area. The hot air is sprayed out through the first air spraying holes 4031 and the second air spraying holes 4041 to preheat the fabric 5. Among them, the branch pipe 402 is respectively connected to another first air spraying plate and a second air spraying plate to preheat the fabric 5 of another oven 6.

[0033] As Figures 7 to 8As shown in the figure, the working principle of the medium-pressure steam waste heat recovery device in the stenter is that after the stenter finishes processing the fabric 5 at high temperature, the remaining medium-pressure steam in the oven 6 will enter the wind heat exchange component 2 through the high-temperature condensate water into the pipe 101. At the same time, the centrifugal fan 3 starts, so that natural wind blows in from the air inlet 103. When the natural wind contacts the wind heat exchange component 2, heat exchange will occur, thus converting it into hot air. Under the action of the centrifugal fan 3, the hot air enters the first air spraying plate 403 and the second air spraying plate 404 respectively through the ventilation pipe 401, and sprays out from the first air spraying holes 4031 and the second air spraying holes 4041 respectively, that is, sprays hot air onto the upper surface and the lower surface of the fabric 5, and preliminarily preheats the fabric 5 in the preheating area, so as to preliminarily dry the moisture inside the fabric 5 and facilitate improving the efficiency of later drying.

[0034] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. However, any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A heat energy recovery device for waste steam from medium-pressure steam of a setting machine, characterized in that: The invention comprises a box (1), wherein the box (1) is provided with a high-temperature condensate water inlet pipe (101), a wind heat energy exchange component (2) is provided inside the box (1), and the high-temperature condensate water inlet pipe (101) is connected to the wind heat energy exchange component (2); an air inlet (103) capable of accommodating the blowing of cold air is provided at one end of the box (1), and a centrifugal fan (3) is correspondingly provided at the other end of the box (1); the centrifugal fan (3) is connected to an air outlet component (4), and the air outlet component (4) comprises a first air spray plate (403 ) and a second air blower plate (404), a preheating area for the fabric (5) to enter and exit is formed between the first air blower plate (403) and the second air blower plate (404); when the centrifugal fan (3) is in operation, natural wind is sucked into the box body (1) and flows through the wind heat energy exchange component (2) for heat exchange, thereby heating up to form hot air, and the hot air enters the air outlet component (4) and is finally ejected from the first air blower plate (403) and the second air blower plate (404) to preheat the fabric (5) input into the preheating area.

2. The heat energy recovery device for waste steam from medium-pressure steam of a setting machine according to claim 1 is characterized in that: The box body (1) is provided with a low-temperature condensed water output pipe (102), and the low-temperature condensed water output pipe (102) is located near the bottom end of the box body (1).

3. The device for recovering heat energy from the residual steam of the medium-pressure steam of the setting machine according to claim 2 is characterized in that: The wind heat energy exchange assembly (2) comprises a plurality of wind heat energy exchangers (201), and adjacent wind heat energy exchangers (201) are interconnected via connecting pipes (202); the wind heat energy exchanger (201) close to the centrifugal fan (3) is connected to the high-temperature condensate water inlet pipe (101), and the wind heat energy exchanger (201) close to the air inlet (103) is connected to the low-temperature condensate water outlet pipe (102).

4. The device for recovering heat energy from waste steam of medium-pressure steam of a setting machine according to claim 3 is characterized in that: The wind heat energy exchanger (201) comprises a conveying pipe (2011), the conveying pipe (2011) is connected to the connecting pipe (202), and the conveying pipe (2011) is arranged with a plurality of fins (2012) connected thereto.

5. The device for recovering heat energy from waste steam of medium-pressure steam of a setting machine according to claim 4, characterized in that: A circulation channel is formed between adjacent fins (2012), and the flow direction of the circulation channel is consistent with the circulation path of natural wind.

6. The device for recovering heat energy from waste steam of medium-pressure steam of a setting machine according to claim 1, characterized in that: An air inlet (301) is provided at one end of the centrifugal fan (3), and an air outlet (302) is provided at the other end of the centrifugal fan (3); the air outlet (302) is communicated with the air outlet assembly (4); an air gathering plate (303) is provided at the end of the air inlet (301); the air gathering plate (303) is concave along the air inlet (301) to form a converging surface.

7. The device for recovering heat energy from waste steam of medium-pressure steam of a setting machine according to claim 1, characterized in that: The air outlet assembly (4) further comprises a ventilation duct (401), wherein the ventilation duct (401) is connected to a branch duct (402) away from the middle end, one end of the ventilation duct (401) is connected to the centrifugal fan (3), and the other end of the ventilation duct (401) is connected to a first air spray plate (403) and a second air spray plate (404).

8. The device for recovering heat energy from residual steam of medium-pressure steam of a setting machine according to claim 7, characterized in that: A plurality of first air jet holes (4031) are distributed on the lower surface of the first air jet plate (403), and a plurality of second air jet holes (4041) are distributed on the upper surface of the second air jet plate (404); the first air jet holes (4031) and the second air jet holes (4041) are arranged relative to each other.

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