Heat exchange device for dyeing machine

Abstract

The utility model relates to a heat exchange device for a dyeing machine, which comprises a smoke pipe and an outer pipe, the outer pipe sleeves the outer side of the smoke pipe, the inner side of the outer pipe is provided with a gas groove, one end of the smoke pipe is communicated with the gas groove, one end of the smoke pipe is connected with a gas pipeline, the outer pipe is provided with a smoke outlet, the outer pipe is provided with a heat exchange mechanism, and the heat exchange mechanism comprises a heat exchange pipe and a heat return pipe. The smoke pipe is sleeved with the heat exchange pipe, a water inlet is formed in one end of the heat exchange pipe, the heat return pipe is arranged at the air groove in the inner side of the outer pipe and communicates with the heat exchange pipe, and a water outlet is formed in the outer pipe. Smoke is conveyed through the smoke pipe, conveyed through the air groove in the outer pipe and discharged through the smoke outlet, meanwhile, water enters the heat exchange pipe through the water inlet to exchange heat with hot smoke of the smoke pipe, the water is conveyed through the heat return pipe, the heat exchange pipe conducts secondary heat exchange with the smoke discharged into the air groove in the air groove, the smoke remains in the outer pipe for a long time, heat exchange is sufficient, and the heat exchange efficiency is improved. The device has the effect of being high in heat energy recovery efficiency.

Description

Technical Field

[0001] This application relates to the field of dyeing machines, and more particularly to a heat exchange device for a dyeing machine. Background Technology

[0002] A dyeing machine is a device used for dyeing textiles. It can apply dyes evenly to textiles to achieve the desired dyeing effect.

[0003] A dyeing machine typically consists of a dyeing tank, a circulation system, a control system, and a heating system. During operation, the textile to be dyed is placed in the dyeing tank, along with appropriate amounts of dye and auxiliaries. The heating system is then activated to heat the dye and textile in the tank to a specific temperature. The circulation system is then activated to evenly spray the dye onto the textile. Simultaneously, the control system adjusts various parameters to ensure the stability and effectiveness of the dyeing process. After dyeing is complete, the heating system is turned off, and the cooling system is activated to cool the dyeing tank.

[0004] When natural gas is used to heat the dye liquor, the flue gas emitted from the combustion has a high temperature and heat. Directly discharging it for exhaust gas treatment would result in energy waste, and heat recovery is necessary. Usually, the flue gas is passed through a heat exchange medium for heat exchange. However, the high-temperature flue gas in the flue gas has a short residence time in the heat exchange medium. The heat exchange efficiency of simple heat exchange is low and the heat exchange effect is not good. Moreover, the flue gas still has a certain amount of heat after heat exchange, resulting in low heat recovery efficiency. Utility Model Content

[0005] To address the problem of low heat exchange efficiency and energy waste caused by direct heat exchange through flue pipes, this application provides a heat exchange device for a dyeing machine.

[0006] The heat exchange device for a dyeing machine provided in this application adopts the following technical solution:

[0007] A heat exchange device for a dyeing machine includes a flue and an outer tube. The outer tube is sleeved outside the flue and coaxially distributed with the flue. A hollow air groove is provided inside the outer tube. One end of the flue is connected to the air groove, and the end of the flue away from the outer tube is connected to a gas pipeline. A flue outlet communicating with the air groove is provided on the outer tube. A heat exchange mechanism is provided on the outer tube, including a heat exchange tube and a regenerating tube. The heat exchange tube is sleeved outside the flue and located at the air groove of the outer tube. A water inlet is provided at one end of the heat exchange tube. The regenerating tube is located at the air groove inside the outer tube and communicates with the heat exchange tube. A water outlet communicating with the regenerating tube is provided on the outer tube.

[0008] Through the above technical scheme, the flue gas is transported through the smoke pipe, transported through the gas groove in the outer pipe, and discharged through the smoke outlet, while the water enters the heat exchange pipe through the water inlet to exchange heat with the hot flue gas in the smoke pipe, and is transported through the heat recovery pipe, the heat exchange pipe exchanges heat with the flue gas discharged into the gas groove for the second time, the flue gas stays in the outer pipe for a long time, and the heat exchange is sufficient, and the heat recovery efficiency is high.

[0009] Optionally, the heat exchange pipe is provided with a fixed plate at one end, a through groove is arranged in the fixed plate, the heat exchange pipe is connected to the fixed plate at the through groove, and the heat recovery pipe is connected to the fixed plate at the through groove.

[0010] Through the above technical scheme, the water is transported to the through groove of the fixed plate through the heat exchange pipe, and then transported through the heat recovery pipe at the through groove.

[0011] Optionally, the water inlet is located at the side of the heat exchange pipe away from the fixed plate, a connecting plate is arranged at the end of the outer pipe away from the fixed plate, a water outlet groove is arranged on one side of the connecting plate, the water outlet is located at the water outlet groove, and the end of the heat recovery pipe away from the fixed plate is connected to the connecting plate and communicates with the water outlet groove.

[0012] Through the above technical scheme, the water enters the heat exchange pipe through the water inlet, is then transported through the heat recovery pipe, and finally is transported to the water outlet groove, and is transported out through the water outlet, the water inlet and the water outlet are located at the same side, the length of the water transportation route in the outer pipe is prolonged, and the water is fully exchanged with the flue gas.

[0013] Optionally, the smoke outlet is located at one side of the connecting plate of the outer pipe.

[0014] Through the above technical scheme, the flue gas is transported through the smoke pipe and then transported along the gas groove in the outer pipe, and the flue gas has the longest transportation route in the outer pipe, and the heat exchange is sufficient.

[0015] Optionally, the heat recovery pipe is provided with a plurality of heat recovery pipes and is distributed in parallel, and the plurality of heat recovery pipes are distributed in a ring shape around the smoke pipe.

[0016] Through the above technical scheme, the plurality of heat recovery pipes are in full contact with the hot flue gas, and the heat exchange effect is good.

[0017] Optionally, a sealing ring is arranged between the connecting plate and the outer pipe.

[0018] Through the above technical scheme, the water outlet groove is sealed, and the probability of water leaking from the water outlet groove into the gas groove is reduced.

[0019] Optionally, the fixed plate is connected to the outer pipe through a connecting block, and the connecting block is provided with a plurality of connecting blocks and is uniformly distributed along the inner side wall of the circumference of the outer pipe.

[0020] By adopting the technical scheme, the fixed plate is fixed and supported by the connecting blocks, and the heat exchange pipe and the regenerative pipe are supported, and the supporting effect is good.

[0021] Optionally, the two adjacent connecting blocks are provided with a through hole.

[0022] By adopting the technical scheme, when the flue gas is transported, it is transported through the through hole, and the influence on the flue gas transportation is reduced.

[0023] To sum up, the present application has at least one of the following beneficial technical effects:

[0024] 1. The flue gas is transported through the smoke pipe, transported through the gas groove in the outer pipe, and discharged through the smoke exhaust port. At the same time, water enters the heat exchange pipe through the water inlet and exchanges heat with the hot flue gas in the smoke pipe. The flue gas is transported through the regenerative pipe, and the heat exchange pipe exchanges heat with the flue gas discharged into the gas groove for the second time. The flue gas stays in the outer pipe for a long time, fully exchanges heat, and has high heat recovery efficiency.

[0025] 2. The water inlet and outlet are located at the same side position, which prolongs the length of the water transportation route in the outer pipe and fully exchanges heat with the flue gas.

[0026] 3. The plurality of regenerative pipes fully contact with the hot flue gas, and the heat exchange effect is good. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 is a sectional view of the present application in the axial direction of the smoke pipe.

[0028] Figure 2 is an enlarged sectional view of part A of the present application.

[0029] Figure 3 is an enlarged sectional view of part B of the present application.

[0030] Those skilled in the art will understand that the elements in the drawings are shown for simplicity and clarity, and are not necessarily drawn to scale. For example, the dimensions and positions of some of the elements in the drawings can be exaggerated relative to other elements to help improve understanding of the present embodiments.

[0031] Reference signs: 1, smoke pipe; 2, outer pipe; 21, gas groove; 22, smoke exhaust port; 3, heat exchange pipe; 31, water inlet; 4, regenerative pipe; 41, water outlet; 5, fixed plate; 51, connecting block; 52, through groove; 6, connecting plate; 61, sealing ring; 62, water outlet groove. DETAILED DESCRIPTION

[0032] The present application will be further described in detail below with reference to the drawings.

[0033] The present application discloses a heat exchange device for a dyeing machine, referring to Figure 1 and Figure 2, including the smoke pipe 1 and the outer pipe 2, the outer pipe 2 is sleeved outside the smoke pipe 1 and is coaxial with the smoke pipe 1, the inner side of the outer pipe 2 is provided with a hollow air groove 21, one end of the smoke pipe 1 communicates with the air groove 21, the end of the smoke pipe 1 away from the outer pipe 2 is located outside the outer pipe 2 and is connected with the gas pipeline, the outer pipe 2 is provided with a smoke exhaust port 22 on the outer side wall and communicates with the air groove 21, the outer pipe 2 is provided with a heat exchange mechanism, the heat exchange mechanism comprises a heat exchange pipe 3 and a heat recovery pipe 4, the heat exchange pipe 3 is coaxially sleeved outside the smoke pipe 1 and is located at the air groove 21 of the outer pipe 2, one end of the heat exchange pipe 3 is provided with a water inlet 31 and communicates with the heat exchange pipe 3, the heat recovery pipe 4 is provided at the air groove 21 inside the outer pipe 2 and communicates with the heat exchange pipe 3, the heat recovery pipe 4 and the heat exchange pipe 3 are parallel to each other, and the outer pipe 2 is provided with a water outlet 41 communicating with the heat recovery pipe 4.

[0034] The flue gas is transported through the smoke pipe 1, transported through the air groove 21 in the outer pipe 2, and exhausted through the smoke exhaust port 22, while the water enters the heat exchange pipe 3 through the water inlet 31 and exchanges heat with the hot flue gas of the smoke pipe 1, and is transported through the heat recovery pipe 4, the heat exchange pipe 3 is twice heated with the flue gas exhausted into the air groove 21 in the air groove 21, the flue gas stays in the outer pipe 2 for a long time, fully exchanges heat, and the heat recovery efficiency is high.

[0035] Referring to Figure 2 and Figure 3 , one end of the heat exchange pipe 3 is provided with a fixed plate 5, the fixed plate 5 is annular and perpendicular to the heat exchange pipe 3, the smoke pipe 1 passes through the middle hole of the fixed plate 5, and the fixed plate 5 is connected between the connecting block 51 and the outer pipe 2, the connecting block 51 is provided with a plurality of connecting blocks 51 and is uniformly distributed along the inner side wall of the outer pipe 2, and the connecting block 51 is provided with a plurality of connecting blocks 51 and is uniformly distributed along the inner side wall of the outer pipe 2. The through hole between the adjacent two connecting blocks 51 is provided for flue gas transportation. The fixed plate 5 is fixed and supported by the connecting block 51, and the heat exchange pipe 3 and the heat recovery pipe 4 are also supported.

[0036] Referring to Figure 3 , the fixed plate 5 is provided with a hollow through groove 52, one end of the heat exchange pipe 3 is connected with the fixed plate 5 at the through groove 52, and one end of the heat recovery pipe 4 is connected with the fixed plate 5 at the through groove 52, the water is transported to the through groove 52 of the fixed plate 5 through the heat exchange pipe 3, and then transported through the heat recovery pipe 4 at the through groove 52.

[0037] Referring to Figure 1 and Figure 2, the water inlet 31 is located at the outer wall of the circumference of the end of the heat exchange pipe 3 away from the fixed plate 5 and is located outside the outer pipe 2, the end of the outer pipe 2 away from the fixed plate 5 is provided with a connecting plate 6, the connecting plate 6 is annularly distributed, the connecting plate 6 and the outer pipe 2 are sealingly connected through a sealing ring 61, the connecting plate 6 and the outer pipe 2 form a water outlet groove 62, the water outlet 41 is located at the outer wall of the circumference of the outer pipe 2 and is located at the water outlet groove 62, the heat exchange pipe 4 is connected with the connecting plate 6 at the end away from the fixed plate 5 and is communicated with the water outlet groove 62. Water enters the heat exchange pipe 3 through the water inlet 31 and is then transported through the heat exchange pipe 4, and finally transported to the water outlet groove 62 and then transported out through the water outlet 41, the water inlet and the water outlet 41 are located at the same side position, which prolongs the length of the water transportation route in the outer pipe 2 and fully exchanges heat with the flue gas.

[0038] Referring to Figure 1 and Figure 2 , the heat exchange pipe 4 is provided with a plurality of parallelly distributed heat exchange pipes 4, and the plurality of heat exchange pipes 4 are annularly distributed around the smoke pipe, the plurality of heat exchange pipes 4 are in full contact with the hot flue gas, and the heat exchange effect is better.

[0039] Referring to Figure 1 and Figure 2 , the smoke outlet 22 is located at the outer wall of the outer pipe 2 and is located at one side of the connecting plate 6, the flue gas is transported through the smoke pipe 1 and then transported along the air groove 21 in the outer pipe 2, the transportation route of the flue gas in the outer pipe 2 is the longest, and the heat exchange is sufficient.

[0040] The implementation principle of the heat exchange device for the dyeing machine is that the flue gas is transported through the smoke pipe 1, transported through the air groove 21 in the outer pipe 2, and discharged through the smoke outlet 22, while the water enters the heat exchange pipe 3 through the water inlet 31 to exchange heat with the hot flue gas of the smoke pipe 1, and is transported through the heat exchange pipe 4, the heat exchange pipe 3 is in the air groove 21 and exchanges heat with the flue gas discharged into the air groove 21, the flue gas stays in the outer pipe 2 for a long time, and the heat exchange is sufficient.

[0041] The above are preferred embodiments of the present application, which do not limit the protection scope of the present application, therefore: any equivalent changes made on the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A heat exchange device for dyeing machine, comprising a smoke pipe (1) and an outer pipe (2), the outer pipe (2) is sleeved outside the smoke pipe (1) and is coaxially distributed with the smoke pipe (1), a hollow air groove (21) is arranged inside the outer pipe (2), one end of the smoke pipe (1) is communicated with the air groove (21), and one end of the smoke pipe (1) away from the outer pipe (2) is connected with a gas pipeline, characterized in that: The outer pipe (2) is provided with a smoke exhaust port (22) communicated with the air groove (21), and is provided with a heat exchange mechanism, which comprises a heat exchange pipe (3) and a heat recovery pipe (4). The heat exchange pipe (3) is sleeved outside the smoke pipe (1) and located at the air groove (21) of the outer pipe (2). One end of the heat exchange pipe (3) is provided with a water inlet (31). The heat recovery pipe (4) is arranged at the air groove (21) inside the outer pipe (2) and communicated with the heat exchange pipe (3). The outer pipe (2) is provided with a water outlet (41) communicated with the heat recovery pipe (4). ​ 2. A heat exchange device for a dyeing machine according to claim 1, characterized in that: One end of the heat exchange pipe (3) is provided with a fixed plate (5), and the fixed plate (5) is provided with a through groove (52). One end of the heat exchange pipe (3) is connected with the fixed plate (5) at the through groove (52). The heat recovery pipe (4) is connected with the fixed plate (5) at the through groove (52).

3. A heat exchange device for a dyeing machine according to claim 2, characterized in that: The water inlet (31) is located at one side of the heat exchange pipe (3) away from the fixed plate (5). One end of the outer pipe (2) away from the fixed plate (5) is provided with a connecting plate (6). One side of the connecting plate (6) is provided with a water outlet groove (62). The water outlet (41) is located at the water outlet groove (62). One end of the heat recovery pipe (4) away from the fixed plate (5) is connected with the connecting plate (6) and communicated with the water outlet groove (62).

4. The heat exchange device for a dyeing machine according to claim 3, characterized in that: The smoke exhaust port (22) is located at one side of the connecting plate (6) of the outer pipe (2).

5. The heat exchange device for a dyeing machine according to claim 1, characterized in that: The heat recovery pipe (4) is provided with a plurality of parallel distribution. The plurality of heat recovery pipes (4) are annularly distributed around the smoke pipe (1).

6. A heat exchange device for a dyeing machine according to claim 3, characterized in that: The connecting plate (6) and the outer pipe (2) are provided with a sealing ring (61).

7. A heat exchange device for a dyeing machine according to claim 2, characterized in that: The fixed plate (5) is connected with the outer pipe (2) through a connecting block (51). The connecting block (51) is provided with a plurality of and evenly distributed along the inner side wall of the circumference of the outer pipe (2).

8. A heat exchange device for a dyeing machine according to claim 7, characterized in that: Through holes are arranged between adjacent two connecting blocks (51).

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