Self-cleaning waste heat recovery device

Abstract

The utility model discloses a self-cleaning waste heat recovery device which comprises a shell and a filtering assembly, a steam inlet and a steam outlet are formed in the shell, the filtering assembly is used for filtering steam, a steam inlet chamber and a filtering chamber are arranged in the shell, a first cleaning assembly and a second cleaning assembly are further arranged in the shell, the first cleaning assembly is arranged in the steam inlet chamber, and the second cleaning assembly is arranged in the filtering chamber. The steam inlet chamber is automatically cleaned; the cleaning assembly II is arranged in the filtering chamber and is used for automatically cleaning the filtering chamber; the first cleaning assembly comprises a moving unit and a cleaning unit, the moving unit is used for driving the cleaning unit to generate displacement, the cleaning unit is used for cleaning the inner wall of the steam inlet chamber, and when cleaning is needed, the moving unit in the first cleaning assembly drives the cleaning unit to move in the steam inlet chamber, and the cleaning unit cleans the inner wall of the steam inlet chamber; the filter chamber is cleaned by the cleaning assembly II, so that all spaces in the shell can be cleaned, and the phenomenon that the operation of the device is influenced by scaling of salt or impurities in the shell is avoided.

Description

Technical Field

[0001] The utility model relates to the field of waste heat recovery, in particular to a self-cleaning waste heat recovery device. Background Art

[0002] Boiler blowdown is a major loss in boiler operation. In order to control the quality of boiler water and steam, two parts of boiler wastewater must be discharged. The first part is continuous blowdown, also known as surface blowdown, which requires continuous discharge of part of the boiler water from the part with the highest salt and alkali concentration to reduce the salt content, alkali content, silica content and suspended slag content in the boiler water. The second part is periodic blowdown, also known as bottom blowdown, which needs to be discharged from the bottom of the boiler regularly.

[0003] The purpose of sewage discharge is to protect the quality of boiler water so that the boiler can operate safely and stably for a long time. However, directly discharging continuous sewage and fixed sewage will not only lose heat and affect the efficiency of the boiler, but also cause thermal pollution to the environment.

[0004] Patent No. "ZL2022223705933" mentioned "a continuous waste heat recovery device", the vaporized continuous waste water is filtered through the filter assembly, impurities are adsorbed on the filter tube, and the flushing liquid is introduced through the flushing port to soak the filter tube, so that the salt and impurities attached to the filter tube are dissolved and discharged through the sewage outlet for cleaning and maintenance. However, since the guide plate used to install the filter tube is sealed and connected to the shell, the interior of the shell is divided into two spaces. This solution can only simply clean the filter tube and the internal space of the shell where the filter tube is located, but cannot clean the space on the other side of the steam inlet. Utility Model Content

[0005] In view of the above problems, the utility model proposes a self-cleaning waste heat recovery device.

[0006] The technical solution adopted by the utility model is as follows:

[0007] A self-cleaning waste heat recovery device comprises a shell and a filter assembly arranged in the shell, the shell is provided with a steam inlet and a steam outlet, the steam inlet is used to introduce vaporized continuous water, the steam outlet is used to guide out clean steam, the filter assembly is used to filter steam, the shell contains a steam inlet chamber and a filter chamber, the shell is further provided with a cleaning assembly 1 and a cleaning assembly 2, the cleaning assembly 1 is arranged in the steam inlet chamber, and is used to automatically clean the steam inlet chamber; the cleaning assembly 2 is arranged in the filter chamber, and is used to automatically clean the filter chamber;

[0008] The cleaning component 1 includes a moving unit and a cleaning unit. The moving unit is used to drive the cleaning unit to move, and the cleaning unit is used to clean the inner wall of the steam inlet chamber.

[0009] In one embodiment of the utility model, the movable unit includes a fixed plate, a motor, a screw and a slider, the fixed plate is fixed at the end of the steam inlet chamber, the motor is fixed to a side of the fixed plate away from the steam inlet, a through hole is provided on the fixed plate, one end of the screw passes through the through hole and is fixedly connected to the rotating shaft of the motor, and the other end is arranged in the steam inlet chamber along the length direction of the shell, the slider is rotatably connected to the screw, and the cleaning unit is arranged on the slider.

[0010] In one embodiment of the present invention, the cleaning unit includes a cleaning disc and a cleaning brush. The cleaning disc is fixed on the slider. The cleaning brush is arranged along the outer circumference of the cleaning disc and fits against the inner wall of the shell.

[0011] In one embodiment of the present invention, an ultrasonic vibrator is further provided on the cleaning disc.

[0012] In one embodiment of the utility model, a plurality of conical nozzles are provided on a side of the fixed plate facing the steam inlet chamber, a flushing channel is provided in the fixed plate, the flushing channel is connected to the conical nozzles, a flushing connector is provided on the shell, the flushing connector is connected to the flushing channel, and is used to receive the flushing liquid.

[0013] In one embodiment of the present invention, the conical nozzle and the flushing channel are both arranged in a ring shape with the through hole as the center.

[0014] In one embodiment of the present invention, the second cleaning component is a plurality of spiral nozzles, and a second flushing connector is provided on the shell, and the second flushing connector is connected to the spiral nozzles.

[0015] The beneficial effect of the utility model is that when cleaning is required, the moving unit in the cleaning component one drives the cleaning unit to move in the steam inlet chamber, the cleaning unit cleans the inner wall of the steam inlet chamber, and the cleaning component two cleans the filter chamber, so that all spaces inside the shell can be cleaned, avoiding the phenomenon of salt or impurities scaling inside and affecting the operation of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is the self-cleaning waste heat recovery device of this embodiment;

[0017] Figure 2 This is a schematic diagram of the connection between the cleaning disc, brush and slider in this embodiment;

[0018] Figure 3 is a half-section schematic diagram of the fixing plate of this embodiment;

[0019] The reference numerals in the figures are:

[0020] 1. Shell, 2. Filter assembly, 3. Steam inlet, 4. Steam outlet, 5. Steam inlet chamber, 6. Filter chamber, 7. Cleaning assembly 1, 8. Cleaning assembly 2, 9. Moving unit, 10. Cleaning unit, 11. Fixed plate, 12. Motor, 13. Screw, 14. Slider, 15. Cleaning disc, 16. Cleaning brush, 17. Ultrasonic vibrator, 18. Conical nozzle, 19. Flushing channel, 20. Flushing joint 1, 21. Flushing joint 2, 22. Drain port, 23. Through hole. DETAILED DESCRIPTION

[0021] The utility model is described in detail below in conjunction with the accompanying drawings.

[0022] Example

[0023] like Figure 1-3 As shown, a self-cleaning waste heat recovery device includes a shell 1 and a filter assembly 2 arranged in the shell 1.

[0024] The shell 1 is provided with a steam inlet 3 and a steam outlet 4. The steam inlet 3 is used to introduce vaporized continuous water, the steam outlet 4 is used to guide out clean steam, and the filter assembly 2 is used to filter the steam.

[0025] The housing 1 includes a steam inlet chamber 5 and a filter chamber 6. The housing 1 is also provided with a cleaning component 1 7 and a cleaning component 2 8. The cleaning component 1 7 is arranged in the steam inlet chamber 5 for automatically cleaning the steam inlet chamber 5; the cleaning component 2 8 is arranged in the filter chamber 6 for automatically cleaning the filter chamber 6.

[0026] The cleaning assembly 7 includes a moving unit 9 and a cleaning unit 10. The moving unit 9 is used to drive the cleaning unit 10 to move, and the cleaning unit 10 is used to clean the inner wall of the steam inlet chamber 5.

[0027] When cleaning is required, the moving unit 9 in the cleaning component 1 7 drives the cleaning unit 10 to move in the steam inlet chamber 5, the cleaning unit 10 cleans the inner wall of the steam inlet chamber 5, and the cleaning component 2 8 cleans the filter chamber 6, so that all the spaces inside the shell 1 can be cleaned to avoid the phenomenon of salt or impurities scaling inside and affecting the operation of the device.

[0028] The moving unit 9 includes a fixing plate 11 , a motor 12 , a lead screw 13 and a sliding block 14 .

[0029] The fixing plate 11 is fixed to the end of the steam inlet chamber 5, and the motor 12 is fixed to the side of the fixing plate 11 away from the steam inlet port 3. A through hole 23 is provided on the fixing plate 11, one end of the screw rod 13 passes through the through hole 23 and is fixedly connected to the rotating shaft of the motor 12, and the other end is arranged in the steam inlet chamber 5 along the length direction of the housing 1. The slider 14 is rotatably connected to the screw rod 13, and the cleaning unit 10 is arranged on the slider 14.

[0030] The cleaning unit 10 includes a cleaning disc 15 and a cleaning brush 16. The cleaning disc 15 is fixed on the slider 14, and the cleaning brush 16 is arranged along the outer circumference of the cleaning disc 15 and fits against the inner wall of the housing 1.

[0031] When the device needs to be cleaned, the motor 12 works, the rotating shaft of the motor 12 drives the screw rod 13 to rotate, and the slider 14 moves back and forth along the length direction of the screw rod 13. At the same time, the cleaning disc 15 is fixed on the slider 14, so that the cleaning disc 15 also moves back and forth along the direction of the screw rod 13. The cleaning brush 16 on the outer circumference of the cleaning disc 15 cleans the inner wall of the shell 1 back and forth, so that the salt and impurities attached to the inner wall of the shell 1 are cleaned off.

[0032] The cleaning plate 15 is also provided with an ultrasonic vibrator 17 . When the ultrasonic vibrator 17 is turned on during cleaning, it can accelerate the salt and impurities to fall off the inner wall of the housing 1 .

[0033] A plurality of conical nozzles 18 are provided on the side of the fixed plate 11 facing the steam inlet chamber 5. A flushing channel 19 is provided in the fixed plate 11, and the flushing channel 19 is connected to the conical nozzle 18. The conical nozzle 18 and the flushing channel 19 are both arranged in a ring shape with the through hole as the center. A flushing connector 20 is provided on the housing 1, and the flushing connector 20 is connected to the flushing channel 19 for receiving the flushing liquid.

[0034] When the device needs to be cleaned, while the motor 12 is working to drive the cleaning disc 15 to clean, a flushing liquid can be introduced through the flushing connector 20, and the flushing liquid is sprayed out through the conical nozzle 18 along the flushing channel 19. Since the conical nozzle 18 is arranged in a ring shape with the through hole as the center, the conical nozzle 18 can flush both the upper and lower inner walls of the housing 1. In this embodiment, there are 4 conical nozzles 18, and the flushing liquid is deionized water.

[0035] When the device is operating normally and does not need to be cleaned, the slider 14 is at rest at the end of the screw rod 13 away from the filter chamber 6, which is the initial position. In this embodiment, the length of the slider 14 is greater than the cross-sectional length of the cleaning disc 15, so that when the slider 14 is in the initial position, the cleaning disc 15 and the conical nozzle 18 do not interfere with each other.

[0036] The cleaning assembly 2 8 is a plurality of spiral nozzles, and a flushing joint 2 21 is provided on the housing 1 , and the flushing joint 21 is connected to the spiral nozzles. When the device needs to be cleaned, a flushing liquid is introduced through the flushing joint 21 to flush and soak the filter tube in the filter chamber 6 .

[0037] A sewage outlet 22 is provided at the bottom of the steam inlet chamber 5 and the filter chamber 6, which can be used to discharge the sewage after flushing and soaking.

[0038] The above description is only a preferred embodiment of the utility model, and does not limit the patent protection scope of the utility model. Any equivalent structural transformation made using the contents of the utility model specification and drawings, directly or indirectly used in other related technical fields, is also included in the protection scope of the utility model.

Claims

1. A self-cleaning waste heat recovery device, comprising a housing and a filter assembly arranged in the housing, wherein the housing is provided with a steam inlet and a steam outlet, wherein the steam inlet is used to introduce vaporized waste water, the steam outlet is used to guide out clean steam, and the filter assembly is used to filter the steam, characterized in that: The shell contains a steam inlet chamber and a filter chamber, and the shell is also provided with a cleaning component 1 and a cleaning component 2. The cleaning component 1 is arranged in the steam inlet chamber and is used to automatically clean the steam inlet chamber; the cleaning component 2 is arranged in the filter chamber and is used to automatically clean the filter chamber; The cleaning component 1 includes a moving unit and a cleaning unit. The moving unit is used to drive the cleaning unit to move, and the cleaning unit is used to clean the inner wall of the steam inlet chamber.

2. The self-cleaning waste heat recovery device according to claim 1, characterized in that: The moving unit includes a fixed plate, a motor, a screw and a slider. The fixed plate is fixed at the end of the steam inlet chamber, and the motor is fixed at a side of the fixed plate away from the steam inlet. A through hole is provided on the fixed plate, one end of the screw passes through the through hole and is fixedly connected to the rotating shaft of the motor, and the other end is arranged in the steam inlet chamber along the length direction of the shell. The slider is rotatably connected to the screw, and the cleaning unit is arranged on the slider.

3. The self-cleaning waste heat recovery device according to claim 2, characterized in that: The cleaning unit comprises a cleaning disc and a cleaning brush. The cleaning disc is fixed on a sliding block. The cleaning brush is arranged along the outer circumference of the cleaning disc and fits against the inner wall of the shell.

4. The self-cleaning waste heat recovery device according to claim 3, characterized in that: The cleaning disc is also provided with an ultrasonic vibrator.

5. The self-cleaning waste heat recovery device according to any one of claims 2 to 4, characterized in that: A plurality of conical nozzles are arranged on the side of the fixed plate facing the steam inlet chamber, a flushing channel is arranged inside the fixed plate, the flushing channel is connected with the conical nozzles, a flushing connector 1 is arranged on the shell, the flushing connector 1 is connected with the flushing channel for receiving flushing liquid.

6. The self-cleaning waste heat recovery device according to claim 5, characterized in that: The conical nozzle and the flushing channel are both arranged in a ring shape with the through hole as the center.

7. The self-cleaning waste heat recovery device according to claim 6, characterized in that: The second cleaning component is a plurality of spiral nozzles. The shell is provided with a second flushing joint, which is connected with the spiral nozzles.

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