Waste heat recovery device of setting machine

Abstract

The utility model provides a waste heat recovery device of a setting machine. The waste heat recovery device of the setting machine comprises a first heat exchange coil pipe, a second heat exchange coil pipe and a third heat exchange coil pipe, one end of the first heat exchange coil pipe is connected with an air inlet pipe, the other end of the first heat exchange coil pipe is connected with one end of the second heat exchange coil pipe through an adapter, a water tank is arranged on the outer ring of the second heat exchange coil pipe, and the second heat exchange coil pipe is installed at the middle section position in the water tank. A plurality of groups of spray heads are mounted at the top of the water tank, the spray heads are connected with external water supply equipment through water supply pipes, a water outlet I is formed in the bottom of the water tank, the water outlet I is connected with a water inlet I of the upper half section of a flash tank through a water return pipe, and a water inlet II of the upper half section of the flash tank is connected with a heat exchange coil III; the side face of the flash tank is further connected with a water supplementing pipe, and the lower half section of the flash tank is connected with a steam outlet pipe. According to the utility model, the plurality of heat exchange units are arranged, so that the waste heat of areas above and below the working area of the setting machine can be fully recycled, and meanwhile, a gas-liquid-gas cascade heat exchange mode is adopted, so that the waste heat can be favorably utilized, and the cost is reduced and the efficiency is improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of textile printing and dyeing equipment, and relates to a waste heat recovery device for a setting machine. Background Technology

[0002] A setting machine is a mechanical device used in industrial manufacturing for material shaping. It is mainly applied in the processing of textiles (fabrics, socks), footwear (shoe uppers, boot shafts), and bamboo boards, using processes such as hot pressing, cold pressing, and steam to solidify the material's form. Steam setting machines, in particular, generate high-temperature gases during processing that still contain a significant amount of heat. Therefore, in order to reuse this heat and reduce costs while increasing efficiency, it is essential to design a waste heat recovery device for the setting machine. Summary of the Invention

[0003] The purpose of this invention is to address the aforementioned problems in existing technologies by proposing a waste heat recovery device for a stenter.

[0004] The purpose of this utility model can be achieved through the following technical solution: a waste heat recovery device for a stenter, comprising a heat exchange coil one, a heat exchange coil two, and a heat exchange coil three, characterized in that one end of the heat exchange coil one is connected to an air inlet pipe, the other end of the heat exchange coil one is connected to one end of the heat exchange coil two via an adapter, a water tank is provided around the outer ring of the heat exchange coil two, the heat exchange coil two is installed in the middle section of the water tank, the other end of the heat exchange coil two is connected to an air outlet pipe, several sets of nozzles are installed on the top of the water tank, the nozzles are connected to an external water supply device via a water supply pipe, an outlet one is provided at the bottom of the water tank, the outlet one is connected to an inlet one of the upper half of the flash tank via a return water pipe, the inlet two of the upper half of the flash tank is connected to the heat exchange coil three, a water replenishment pipe is also connected to the side of the flash tank, and a steam outlet pipe is connected to the lower half of the flash tank.

[0005] The working principle of this utility model is as follows: Heat exchange coil one and heat exchange coil three are installed below and above the working area of ​​the steam setting machine, respectively. Pre-made air is introduced into heat exchange coil one through the air inlet pipe. After absorbing heat from the lower position of the working area of ​​the steam setting machine, the air pressure and flow rate are adjusted by the adapter before entering heat exchange coil two. At the same time, pre-made water is sprayed from the nozzle at the top of the water tank. After absorbing heat from heat exchange coil two, the water enters the bottom of the water tank and is collected. The air cooled by heat exchange in heat exchange coil two is discharged through the air outlet pipe. The pre-made water that has absorbed heat in the water tank enters the flash tank through the water return pipe. After mixing with the high-pressure water vapor filled in the water supply pipe, it is output to other equipment through the steam outlet tank. During this period, pre-made water is also filled into the inlet of heat exchange coil three. When passing through heat exchange coil three, it absorbs heat from the upper position of the working area of ​​the steam setting machine and is directly input into the flash tank. Similarly, it mixes with the high-pressure water vapor filled in the water supply pipe and is output to other equipment through the steam outlet tank.

[0006] The water tank is also provided with a second water outlet on its side, and the second water outlet is connected to a water outlet pipe.

[0007] With the above structure, water in the tank can be used directly through the outlet pipe.

[0008] The heat exchange coil one, heat exchange coil two and heat exchange coil three are all made of finned tubes.

[0009] The above structure increases the heat exchange area.

[0010] Spiral guide vanes are installed inside heat exchange coil one, heat exchange coil two, and heat exchange coil three.

[0011] By adopting the above structure, the residence time of the fluid inside the tube is extended by using spiral guide vanes, thereby increasing the heat exchange efficiency.

[0012] The heat exchange coil one, heat exchange coil two and heat exchange coil three are made of stainless steel.

[0013] The above structure ensures thermal conductivity, long lifespan, and good hygiene.

[0014] Compared with existing technologies, the waste heat recovery device of this stenter has the following advantages: By setting up multiple heat exchange units, this utility model can fully recover and utilize the waste heat in the upper and lower areas of the working area of ​​the stenter. At the same time, it adopts a "gas-liquid-gas" stepped heat exchange mode, which can make good use of waste heat and achieve cost reduction and efficiency improvement. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the main structure of the present invention.

[0016] Figure 2 This is a schematic diagram of the lower layer structure of this utility model.

[0017] Figure 3 This is a schematic diagram of the internal structure of a heat exchange coil in this utility model.

[0018] In the diagram, 1. Heat exchanger coil one; 2. Heat exchanger coil two; 3. Heat exchanger coil three; 4. Air inlet pipe; 5. Adapter; 6. Water tank; 7. Air outlet pipe; 8. Nozzle; 9. Water supply pipe; 10. Water return pipe; 11. Flash tank; 12. Water supply pipe; 13. Steam outlet pipe; 14. Water outlet pipe; 15. Spiral guide vane. Detailed Implementation

[0019] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0020] like Figure 1-3As shown, the waste heat recovery device of this stenter includes heat exchange coil 1, heat exchange coil 2, and heat exchange coil 3. One end of heat exchange coil 1 is connected to an air inlet pipe 4, and the other end of heat exchange coil 1 is connected to one end of heat exchange coil 2 via an adapter 5. A water tank 6 is provided around the outer ring of heat exchange coil 2, and heat exchange coil 2 is installed in the middle section of water tank 6. The other end of heat exchange coil 2 is connected to an air outlet pipe 7. Several sets of nozzles 8 are installed on the top of water tank 6, and the nozzles 8 are connected to an external water supply device via a water supply pipe 9. A water outlet 1 is provided at the bottom of water tank 6, and water outlet 1 is connected to the water inlet 1 of the upper half of flash tank 11 via a return water pipe 10. The water inlet 2 of the upper half of flash tank 11 is connected to heat exchange coil 3. A water supply pipe 12 is also connected to the side of flash tank 11, and a steam outlet pipe 13 is connected to the lower half of flash tank 11.

[0021] The adapter 5 in this utility model adopts an existing electric throttle valve product.

[0022] In a specific embodiment, the number and position distribution of the 8 sets of nozzles are set according to the area and height of the heat exchange coil 2, so as to ensure that the water sprayed by the nozzles 8 can cover and avoid overlapping on the heat exchange coil 2 as much as possible.

[0023] In this invention, the flash evaporator 11 is an existing product. Its principle is that after high-pressure saturated water enters a relatively low-pressure container, the sudden drop in pressure causes the saturated water to become a portion of the saturated water vapor and saturated water under the container pressure.

[0024] In this invention, the initial pressure of the fluid entering the flash tank 11 through the heat exchange coil is maintained at 5 kgf / cm², and the pressure of the fluid supplemented through the water supply pipe 12 is 28 kgf / cm².

[0025] The side of the water tank 6 is also provided with a second water outlet, which is connected to a water outlet pipe 14.

[0026] In this invention, the water output from the water tank 6 through the water outlet pipe 14 can be used for domestic water use.

[0027] Heat exchanger coil 1, heat exchanger coil 2, and heat exchanger coil 3 all use finned tubes.

[0028] The finned tube structure of this utility model is an existing structure, which increases the heat exchange area by setting several protruding fins on the outer wall of the tube.

[0029] Spiral guide vanes 15 are installed inside heat exchange coil 1, heat exchange coil 2 and heat exchange coil 3.

[0030] The spiral guide component in this invention is an existing product that can extend the residence time of fluid in the pipe and increase heat exchange efficiency.

[0031] Heat exchanger coil 1, heat exchanger coil 2 and heat exchanger coil 3 are made of stainless steel.

[0032] In a specific embodiment, since the water in the water tank 6 can be used directly for domestic water use, the heat exchange coil 2 is usually made of stainless steel, while the heat exchange coil 1 and the heat exchange coil 3 can be replaced with copper or copper alloy materials with higher thermal conductivity as needed.

[0033] The working principle of this utility model is as follows: Heat exchange coil 1 and heat exchange coil 3 are installed below and above the working area of ​​the steam setting machine, respectively. Pre-prepared air is introduced into heat exchange coil 1 through air inlet pipe 4. After absorbing heat from the area below the working area of ​​the steam setting machine, the air pressure and flow rate are adjusted by adapter 5 before entering heat exchange coil 2. At the same time, pre-prepared water is sprayed from nozzle 8 at the top of water tank 6, which absorbs heat from heat exchange coil 2 and is collected at the bottom of water tank 6. The water is then cooled by heat exchange coil 2. The air is then discharged through the exhaust pipe 7. The pre-prepared water that has absorbed heat in the water tank 6 enters the flash tank 11 through the return water pipe 10. After mixing with the high-pressure water vapor filled in the water supply pipe 12, it is output to other equipment through the steam outlet. During this period, the inlet of the heat exchange coil 3 is also filled with pre-prepared water. When passing through the heat exchange coil 3, it absorbs the heat from the area above the working zone of the steam setting machine and is directly input into the flash tank 11. Similarly, it mixes with the high-pressure water vapor filled in the water supply pipe 12 and is output to other equipment through the steam outlet.

[0034] In this invention, the various mechanisms are connected and driven using existing technologies, and synchronous control is achieved through a control panel.

[0035] All of the above components are general standard parts or components known to those skilled in the art. Their structure and principles can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0036] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A waste heat recovery device for a stenter, comprising heat exchange coil one (1), heat exchange coil two (2), and heat exchange coil three (3), characterized in that, One end of heat exchange coil 1 (1) is connected to an air inlet pipe (4), and the other end of heat exchange coil 1 (1) is connected to one end of heat exchange coil 2 (2) via an adapter (5). A water tank (6) is provided on the outer ring of heat exchange coil 2 (2). Heat exchange coil 2 (2) is installed in the middle section of the water tank (6). The other end of heat exchange coil 2 (2) is connected to an air outlet pipe (7). Several sets of nozzles (8) are installed on the top of the water tank (6). The nozzles (8) are connected to an external water supply device via a water supply pipe (9). A water outlet 1 is provided at the bottom of the water tank (6). The water outlet 1 is connected to the water inlet 1 of the upper half of the flash tank (11) via a return water pipe (10). The water inlet 2 of the upper half of the flash tank (11) is connected to heat exchange coil 3 (3). A water supply pipe (12) is also connected to the side of the flash tank (11). A steam outlet pipe (13) is connected to the lower half of the flash tank (11).

2. The waste heat recovery device for the stenter according to claim 1, characterized in that, The water tank (6) is also provided with a second water outlet on its side, and the second water outlet is connected to a water outlet pipe (14).

3. The waste heat recovery device for the stenter according to claim 1, characterized in that, The heat exchange coil one (1), heat exchange coil two (2) and heat exchange coil three (3) are all made of finned tubes.

4. The waste heat recovery device for the stenter according to claim 1, characterized in that, Spiral guide vanes (15) are installed inside the heat exchange coil one (1), heat exchange coil two (2) and heat exchange coil three (3).

5. The waste heat recovery device for the stenter according to claim 1, characterized in that, The heat exchange coil one (1), heat exchange coil two (2) and heat exchange coil three (3) are made of stainless steel.

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