Waste heat recovery device for waste water after fabric dyeing treatment

Abstract

The utility model relates to a waste heat recovery device for waste water after fabric dyeing treatment, the waste heat recovery device comprises a barrel body, a heat exchange pipe and a cleaning assembly, the heat exchange pipe is a spiral coil pipe and is located in the barrel body, the cleaning assembly comprises a cleaning ring, a brush and a driving part, the cleaning ring is arranged on the heat exchange pipe in a sleeving manner, and the brush is located in the barrel body. The brush is arranged on the cleaning ring and used for brushing the outer side wall of the heat exchange pipe, and the driving part is used for driving the cleaning ring to move in a reciprocating mode in the spiral direction of the heat exchange pipe. The heat exchanger has the effect of reducing impurities in waste water adhered to the outer side wall of the exchanger so as to prolong the service life of the heat exchange pipe.

Description

Technical Field

[0001] This application relates to the field of wastewater waste heat recovery, and in particular to a wastewater waste heat recovery device after fabric dyeing treatment. Background Technology

[0002] In the dyeing and finishing process of textiles, the wastewater discharged from dyeing machines, desizing and washing machines, mercerizing machines, etc., has a temperature as high as 70℃-80℃. This wastewater is directly discharged into the sewer, which not only wastes energy, but also seriously affects the normal operation of sewage treatment. In order to reduce energy waste, the heat in the high-temperature wastewater generated in the process will be recovered and utilized.

[0003] Currently, Chinese utility model patent CN203100481U discloses a waste heat recovery and heat exchange device for wastewater from a finishing machine. The device includes a water tank integrated with and located outside the finishing machine, heat exchange pipes inside the tank, a fresh water inlet pipe and a high-temperature wastewater hot water pipe at the top of the tank, and a fresh hot water supply pipe connected to the bottom of the tank. Each water pipe is equipped with a water valve, the control end of which is connected to an equipment control system, which automatically controls the opening and closing of the water valves. This utility model effectively and quickly utilizes wastewater heat.

[0004] Heat exchange tubes are usually made of metal, which facilitates the transfer of heat from wastewater in the water tank to cold water inside the heat exchange tubes. However, wastewater contains a large number of impurities that easily adhere to the outer wall of the heat exchange tubes, causing them to rust and greatly reducing their service life. Utility Model Content

[0005] In order to reduce the adhesion of impurities in wastewater to the outer wall of the heat exchanger and thus extend the service life of the heat exchange tube, this application provides a waste heat recovery device for wastewater after fabric dyeing treatment.

[0006] This application provides a waste heat recovery device for wastewater from fabric dyeing treatment, which adopts the following technical solution:

[0007] A wastewater wastewater recovery device after fabric dyeing includes a tank, a heat exchange tube, and a cleaning assembly. The heat exchange tube is a spiral coil located inside the tank. The cleaning assembly includes a cleaning ring, a brush, and a driving component. The cleaning ring is sleeved on the heat exchange tube, and the brush is mounted on the cleaning ring. The brush is used to scrub the outer wall of the heat exchange tube, and the driving component is used to drive the cleaning ring to reciprocate along the spiral direction of the heat exchange tube.

[0008] By adopting the above technical solution, the driving component drives the cleaning ring to move back and forth along the spiral direction of the heat exchange tube. The brush on the cleaning ring moves relative to the heat exchange tube, and the brush can scrape off the impurities adhering to the outer wall of the heat exchange tube, reducing the occurrence of rust in the heat exchange tube and extending the service life of the heat exchange tube.

[0009] Optionally, the driving component includes a reciprocating lead screw, a drive motor, a drive ring, and a rotating block. The reciprocating lead screw is rotatably connected to the barrel body, the drive motor is used to drive the reciprocating lead screw to rotate, the drive ring is threadedly connected to the reciprocating lead screw, the rotating block is rotatably connected to the drive ring, and the cleaning ring is rotatably connected to the rotating block.

[0010] By adopting the above technical solution, the drive motor drives the reciprocating screw to rotate, and the reciprocating screw drives the drive ring to move back and forth along the length of the reciprocating screw. The rotating block moves with the drive ring. Since the cleaning ring is set on the rotating block, the movement of the rotating block will drive the cleaning ring to move along the spiral direction of the heat exchange tube. The cleaning ring drives the brush to remove impurities from the outer wall of the heat exchange tube. At the same time, the movement of the cleaning ring will drive the rotating block to rotate relative to the drive ring. The drive component has a reasonable structure and is easy for operators to operate.

[0011] Optionally, the reciprocating lead screw is further provided with a scraper, which abuts against the inner side wall of the barrel.

[0012] By adopting the above technical solution, impurities are also easily adhered to the inner wall of the barrel. The drive motor drives the reciprocating screw to rotate, and the reciprocating screw drives the scraper to rotate. The scraper scrapes off the impurities adhered to the inner wall of the barrel, thereby reducing the accumulation of impurities in the barrel.

[0013] Optionally, the scraper is also provided with stirring blades for stirring wastewater.

[0014] By adopting the above technical solution, when the drive motor drives the reciprocating screw to rotate, the reciprocating screw drives the scraper to rotate. The stirring blades on the scraper rotate with the scraper, and the stirring blades stir the sewage in the tank, so that the heat distribution of the sewage in the tank is more uniform, and the heat is better penetrated into the heat exchange tube. At the same time, it also reduces the amount of impurities adhering to the side wall of the tank and the outer wall of the heat exchange tube.

[0015] Optionally, the cleaning ring includes a sliding ring and several arc-shaped blocks. The sliding ring reciprocates along the spiral direction of the heat exchange tube, and the several arc-shaped blocks are evenly distributed circumferentially along the axis of the arc-shaped blocks. The arc-shaped blocks are detachably connected to the sliding ring, and the brush is disposed on the arc-shaped blocks.

[0016] By adopting the above technical solution, the brush will wear out after long-term use, and the staff needs to replace the brush regularly. The staff can first remove the arc block, and the brush can be removed along with the arc block. Then, the arc block with the new brush is installed on the sliding ring. Multiple arc blocks form a complete circle, and the brush on the arc block can better clean the heat exchange tube.

[0017] Optionally, the barrel is provided with a cover, the cover has an inlet pipe, and the lower end of the barrel is provided with a drain pipe. Both the inlet pipe and the drain pipe are provided with control valves for controlling the flow of sewage.

[0018] By adopting the above technical solution, the cover facilitates the maintenance of the cleaning components by the staff, facilitates the replacement of the arc block, the sewage inlet pipe and sewage outlet pipe are reasonably set, and the control valve is used by the staff to control the input and output of wastewater.

[0019] Optionally, the barrel body is provided with a sealing element for the cap to keep the barrel body sealed. The sealing element includes a sealing cylinder and a sealing ring. The cap is rotatably connected to the barrel body, and the sealing ring is disposed on the cap. The sealing cylinder is used to drive the cap to rotate and keep the sealing ring abutting against the upper end face of the barrel body.

[0020] By adopting the above technical solution, since the wastewater has a high temperature and contains hot steam, the sealing ring on the cover reduces the escape of heat from the wastewater. When the staff needs to maintain and clean the components, the staff starts the sealing cylinder, which drives the cover to rotate. The structure is simple and reasonable.

[0021] Optionally, an observation window may be provided on the cover.

[0022] By adopting the above technical solution, the observation window makes it easier for staff to observe the internal workings of the waste heat recovery device and to confirm the normal operation of the equipment.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. The cleaning assembly is used to remove impurities adhering to the outer wall of the heat exchange tube, extending the service life of the heat exchange tube;

[0025] 2. The scraper on the reciprocating screw is used to remove impurities from the inner wall of the barrel, reducing the accumulation of impurities;

[0026] 3. The seals are used to reduce the escape of heat from the wastewater from the tank and the lid. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of a wastewater heat recovery device after fabric dyeing.

[0028] Figure 2 yes Figure 1 A schematic diagram of the structure of the central sealing component.

[0029] Figure 3 yes Figure 1 The cross-sectional view of the middle barrel is used to show the positional relationship between the cleaning components and the heat exchange tubes.

[0030] Figure 4 yes Figure 3 A schematic diagram of the cleaning ring structure.

[0031] Reference numerals: 1. Barrel body; 11. Sealing groove; 12. Observation window; 2. Heat exchange tube; 3. Cleaning assembly; 31. Cleaning ring; 311. Sliding ring; 312. Arc block; 32. Brush; 33. Drive component; 331. Reciprocating screw; 332. Drive motor; 333. Drive ring; 334. Rotating block; 335. Connecting rod; 34. Scraper; 35. Stirring blade; 4. Cover; 5. Seal; 51. Sealing cylinder; 52. Sealing ring; 6. Inlet pipe; 7. Outlet pipe; 8. Control valve. Detailed Implementation

[0032] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0033] This application discloses a waste heat recovery device for wastewater after fabric dyeing. (Refer to...) Figure 1 and Figure 2 A wastewater waste heat recovery device after textile dyeing includes a tank body 1, a heat exchange tube 2, a cleaning component 3, a cover 4, and a sealing element 5. The heat exchange tube 2 is a spiral coil and is located inside the tank body 1. The heat exchange tube 2 is coaxially arranged with the tank body 1, and both ends of the heat exchange tube 2 extend out of the tank body 1. The cleaning component 3 is located inside the tank body 1 and is used to remove impurities adhering to the heat exchange tube 2. The cover 4 is rotatably connected to the upper end face of the tank body 1 along a horizontal rotation axis tangent to the tank body 1. The sealing element 5 is used to seal the cover 4 to the tank body 1. A drain pipe 7 is provided on the lower end face of the tank body 1, and a drain inlet pipe 6 is provided on the end face of the cover 4 opposite to the tank body 1. Both the drain pipe 7 and the drain inlet pipe 6 are equipped with control valves 8.

[0034] Reference Figure 1 and Figure 2 The sealing element 5 includes a sealing cylinder 51 and a sealing ring 52. The cylinder body of the sealing cylinder 51 is rotatably connected to the outer wall of the barrel body 1. One end of the piston rod of the sealing cylinder 51 is rotatably connected to the cover 4. The sealing ring 52 is fixedly set on the end face of the cover 4 facing the barrel body 1. A sealing groove 11 for accommodating the sealing ring 52 is provided on the barrel body 1. An observation window 12 for staff to observe the inside of the barrel body 1 is provided on the cover 4.

[0035] Reference Figure 3 and Figure 4 The cleaning component 3 includes a cleaning ring 31, a brush 32, and a drive component 33. The drive component 33 includes a reciprocating screw 331, a drive motor 332, a drive ring 333, a rotating block 334, and a connecting rod 335. The reciprocating screw 331 is coaxially arranged with the barrel 1 and is located inside the barrel 1. The lower end of the reciprocating screw 331 is rotatably connected to the inner bottom wall of the barrel 1. The drive motor 332 is fixedly arranged on the lower end face of the barrel 1 and is fixedly connected to the output shaft of the reciprocating screw 331. The drive ring 333 is coaxially arranged with the reciprocating screw 331 and is threadedly connected to the reciprocating screw 331. The rotating block 334 is rotatably connected to the outer side wall of the drive ring 333. The length direction of the connecting rod 335 is parallel to the radial direction of the barrel 1, and the connecting rod 335 is fixedly arranged on the rotating block 334.

[0036] Reference Figure 3 and Figure 4 The cleaning ring 31 includes a sliding ring 311 and four arc-shaped blocks 312. The sliding ring 311 is sleeved on the spiral coil and is rotatably connected to the connecting rod 335 along the length of the connecting rod 335. The four arc-shaped blocks 312 are evenly distributed circumferentially along the axis of the sliding ring 311 and abut against each other to form a complete ring. The arc-shaped blocks 312 are detachably connected to the sliding ring 311, and the detachable connection can be a bolt connection. The brush 32 is set on the inner side wall of the arc-shaped block 312 and abuts against the heat exchange tube 2.

[0037] Reference Figure 3 and Figure 4 Two scrapers 34 are provided on the reciprocating screw 331. The two scrapers 34 are evenly distributed circumferentially along the axis of the reciprocating screw 331. The scrapers 34 are L-shaped. The outer side wall of the scraper 34 abuts against the inner side wall and the inner bottom wall of the barrel 1. The scrapers 34 are fixedly installed on the reciprocating screw 331. Several stirring blades 35 are provided on the scrapers 34. The stirring blades 35 are distributed along the vertical direction of the barrel 1 and are inclined.

[0038] The implementation principle of the wastewater waste heat recovery device after fabric dyeing in this application embodiment is as follows: clean water flows through the heat exchange pipe 2 through the tank 1, and wastewater enters the tank 1 through the sewage inlet pipe 6. After heat exchange, it is discharged from the sewage outlet pipe 7. The heat of the wastewater passes through the heat exchange pipe 2 and enters the clean water, and the temperature of the clean water rises.

[0039] When wastewater undergoes heat exchange within the tank 1, impurities in the wastewater easily adhere to the outer wall of the heat exchange tube 2 and the inner wall of the tank 1. The operator can start the drive motor 332, which drives the reciprocating screw 331 to rotate. The reciprocating screw 331 drives the drive ring 333 to slide back and forth vertically. The drive ring 333 drives the rotating block 334 to move. The rotating block 334, through the connecting rod 335, drives the sliding ring 311 to move on the heat exchange tube 2. As the sliding block moves along the spiral heat exchange tube 2, it will... The rotating block 334 rotates relative to the drive ring 333. The arc-shaped block 312 is set on the sliding block. The brush 32 on the arc-shaped block 312 removes the impurities adsorbed on the heat exchange tube 2, reducing the occurrence of rust on the heat exchange tube 2. At the same time, the reciprocating screw 331 drives the scraper 34 to rotate. The scraper 34 also scrapes away the impurities on the inner wall of the tank 1. Meanwhile, the stirring blade 35 on the scraper 34 rotates, causing the wastewater to rotate inside the tank 1, so that the water temperature inside the tank 1 is uniform and the impurities adsorbed on the side wall of the tank 1 and the heat exchange tube 2 are reduced.

[0040] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A waste heat recovery device for fabric dyeing wastewater, characterized in that: The device includes a barrel (1), a heat exchange tube (2), and a cleaning component (3). The heat exchange tube (2) is a spiral coil and is located inside the barrel (1). The cleaning component (3) includes a cleaning ring (31), a brush (32), and a drive component (33). The cleaning ring (31) is sleeved on the heat exchange tube (2), and the brush (32) is disposed on the cleaning ring (31). The brush (32) is used to scrub the outer wall of the heat exchange tube (2), and the drive component (33) is used to drive the cleaning ring (31) to move back and forth along the spiral direction of the heat exchange tube (2).

2. The waste heat recovery device for fabric dyeing wastewater according to claim 1, characterized in that: The driving component (33) includes a reciprocating lead screw (331), a drive motor (332), a drive ring (333), and a rotating block (334). The reciprocating lead screw (331) is rotatably connected to the barrel body (1). The drive motor (332) is used to drive the reciprocating lead screw (331) to rotate. The drive ring (333) is threadedly connected to the reciprocating lead screw (331). The rotating block (334) is rotatably connected to the drive ring (333). The cleaning ring (31) is rotatably connected to the rotating block (334).

3. The waste heat recovery device for fabric dyeing wastewater according to claim 2, characterized in that: The reciprocating lead screw (331) is also provided with a scraper (34), which abuts against the inner wall of the barrel (1).

4. The waste heat recovery device for fabric dyeing wastewater according to claim 3, characterized in that: The scraper (34) is also provided with stirring blades (35) for stirring wastewater.

5. The waste heat recovery device for fabric dyeing wastewater according to claim 1, characterized in that: The cleaning ring (31) includes a sliding ring (311) and several arc-shaped blocks (312). The sliding ring (311) moves back and forth along the spiral direction of the heat exchange tube (2). The several arc-shaped blocks (312) are evenly distributed circumferentially along the axis of the arc-shaped blocks (312). The arc-shaped blocks (312) are detachably connected to the sliding ring (311). The brush (32) is disposed on the arc-shaped blocks (312).

6. The waste heat recovery device for fabric dyeing wastewater according to claim 1, characterized in that: The barrel (1) is provided with a cover (4), and a sewage inlet pipe (6) is provided on the cover (4). A sewage outlet pipe (7) is provided on the lower end face of the barrel (1). Both the sewage inlet pipe (6) and the sewage outlet pipe (7) are provided with control valves (8) for controlling the flow of sewage.

7. The waste heat recovery device for fabric dyeing wastewater according to claim 6, characterized in that: The barrel body (1) is provided with a sealing element (5) for the cover (4) to keep the barrel body (1) sealed. The sealing element (5) includes a sealing cylinder (51) and a sealing ring (52). The cover (4) is rotatably connected to the barrel body (1). The sealing ring (52) is provided on the cover (4). The sealing cylinder (51) is used to drive the cover (4) to rotate and keep the sealing ring (52) abutting against the upper end face of the barrel body (1).

8. The waste heat recovery device for fabric dyeing wastewater according to claim 6, characterized in that: An observation window (12) is provided on the cover (4).

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