Automatic sewage disposal device for sludge drying machine and sludge drying machine

Abstract

The automatic sewage disposal device comprises a cleaning assembly and a driving assembly, the cleaning assembly comprises an air ejector pipe, the air ejector pipe is erected on the right opposite side of a fin type heat exchanger, an air ejector opening is formed in the side, facing the fin type heat exchanger, of the air ejector pipe, and the driving assembly drives the air ejector pipe to rotate. The air spraying opening sprays high-speed fluid to the finned heat exchanger, a high-speed fluid curtain is formed on the surface of the finned heat exchanger, and the output end of the driving assembly is connected with the cleaning assembly so that the cleaning assembly can reciprocate. High-speed fluid is jetted to the finned heat exchanger through the reciprocating air jet holes to form a high-speed flowing fluid curtain, so that sludge on fins falls off along with the high-speed fluid and is brought out of the heat exchanger by the high-speed fluid, and the purposes of cleaning the heat exchanger and preventing the heat exchanger from being corroded are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of sludge drying machines, in particular to an automatic dirt cleaning device for a sludge drying machine and the sludge drying machine. Background Art

[0002] The finned heat exchanger of the traditional heat pump type low-temperature sludge dryer is prone to dust accumulation and blockage during long-term use. After 2 to 3 years, the heat transfer tube is corroded by dust, causing the heat pump system to leak and become unusable, resulting in significant economic losses. At present, many cleaning devices use water for flushing, but this flushing device is affected by the water capacity of the water tray, and the flushing time is often very short, and tap water is wasted. At the same time, it also affects the normal operation of the heat pump system. In addition, due to the influence of the fin strength, the flushing pressure is small and the cleaning is not clean. Therefore, in order to ensure the normal operation of the heat pump system, it is necessary to develop a device that can thoroughly clean the finned heat exchanger and reduce maintenance costs. Utility Model Content

[0003] In order to solve the problem that the finned heat exchanger of the traditional heat pump type low-temperature sludge dryer is prone to dust accumulation and dust is prone to corrode the finned heat exchanger during long-term use, the utility model provides an automatic cleaning device for a sludge dryer and a sludge dryer, which sprays a high-speed fluid to the finned heat exchanger through a reciprocating jet nozzle to form a high-speed flowing fluid curtain, so that the sludge on the fins falls off with the high-speed fluid and is carried out of the heat exchanger by the high-speed fluid, thereby achieving the purpose of cleaning the heat exchanger and preventing corrosion of the heat exchanger.

[0004] The utility model is realized by the following technical solutions:

[0005] An automatic cleaning device for a sludge drying machine, comprising:

[0006] A cleaning assembly, the cleaning assembly comprising an air jet pipe, the air jet pipe being mounted on the opposite side of the fin heat exchanger, and an air jet port being arranged on the side of the air jet pipe facing the fin heat exchanger, the air jet port spraying a high-speed fluid toward the fin heat exchanger to form a high-speed fluid curtain on the surface of the fin heat exchanger;

[0007] A driving component, wherein the output end of the driving component is connected to the cleaning component to make the cleaning component reciprocate.

[0008] In this solution, a cleaning component is arranged on the opposite side of the fin heat exchanger, and a jet pipe is arranged on the side of the cleaning component facing the fin heat exchanger. The jet port on the jet pipe sprays high-speed fluid toward the surface of the fin heat exchanger to form a high-speed fluid curtain on the surface of the fin heat exchanger. The cleaning component reciprocates along the fin heat exchanger. When the high-speed fluid forms a fluid channel between the fins, it will reciprocate and flush the surface of the fin at a high speed. The dust on the surface of the fin is blown away and flows out of the heat exchanger with the high-speed fluid, thereby achieving the purpose of cleaning the fin heat exchanger.

[0009] As a further technical solution of the automatic cleaning device, in order to improve cleaning efficiency, the cleaning component includes a plurality of the air jet pipes, and the plurality of the air jet pipes are arranged at intervals along the moving direction of the cleaning component.

[0010] As a further technical solution of the automatic dirt cleaning device, in order to further improve the cleaning efficiency, a plurality of the air jets are provided on the air jet pipe, and the plurality of the air jets are evenly arrayed along the axial direction of the air jet pipe.

[0011] As a further technical solution of the automatic cleaning device, each of the jet ports is matched with an independent air inlet, so that the pressure of the high-speed fluid ejected from each jet port is balanced.

[0012] As a further technical solution of the automatic cleaning device, the air jet is a slit-type air outlet arranged along the axial direction of the air jet pipe. The air flows out through the slit-type air outlet, converting the fluid potential energy into kinetic energy to form a high-speed fluid blowing toward the fins of the heat exchanger, thereby improving the cleaning efficiency.

[0013] As a further technical solution of the automatic cleaning device, in order to further improve the cleaning efficiency, the axial cross-sectional shape of the jet port is a V-shape with an angle α, and the V-shaped bottom surface of the jet port is a plane with a width of b, which will be more conducive to the high-speed fluid forming a high-speed fluid curtain between the fins.

[0014] As a further technical solution of the automatic dirt cleaning device, in order to further improve the cleaning efficiency, the angle α is in the range of 30° to 60°, and the width b is in the range of 0.4 mm to 0.8 mm.

[0015] As a further technical solution of the automatic cleaning device, in order not to affect the operation of the dryer and to be able to work all-weather and fully automatically, the driving component includes an active driving component and a driven driving component;

[0016] The active drive assembly includes a motor and a driving wheel, and the driving wheel is connected to the output end of the motor;

[0017] The driven drive assembly includes a transmission belt, a first fixed pulley, a second fixed pulley, a third fixed pulley and a fourth fixed pulley, wherein the first fixed pulley includes two inner fixed pulleys and an outer fixed pulley connected in series on the same axis, and the transmission belt is a loop-type transmission belt connected end to end, and its winding direction is the driving wheel, the second fixed pulley, the third fixed pulley, the inner fixed pulley of the first fixed pulley, the fourth fixed pulley, the outer fixed pulley of the first fixed pulley, and finally returns to the driving wheel to form a transmission belt connected end to end;

[0018] The axial ends of the jet pipe are respectively fixed to the uppermost and lowermost sections of the transmission belt moving in the same direction;

[0019] The driving wheel drives the transmission belt to reciprocate under the drive of the motor. As the transmission belt reciprocates, the jet pipe fixed on the transmission belt also reciprocates stably between the left and right sides of the finned heat exchanger.

[0020] As a further technical solution of the automatic cleaning device, the driven drive components are respectively provided with guide rails, and the axial ends of the jet pipe are respectively provided with guide wheels matching the guide rails, and the positioning rolling of the guide wheels and the guide rails provides positioning support for the jet pipe during reciprocating motion.

[0021] Compared with the prior art, the utility model has the following advantages and beneficial effects:

[0022] 1. The utility model sets a cleaning assembly on the opposite side of the fin heat exchanger, and sets an air jet pipe on the side of the cleaning assembly facing the fin heat exchanger. The air jet port on the air jet pipe sprays high-speed fluid to the surface of the fin heat exchanger, forming a high-speed fluid curtain on the surface of the fin heat exchanger. The cleaning assembly reciprocates along the fin heat exchanger. When the high-speed fluid forms a fluid channel between the fins, it will reciprocate and flush the fin surface at a high speed. The dust on the fin surface is blown away and flows out of the heat exchanger with the high-speed fluid, thereby achieving the purpose of cleaning the fin heat exchanger.

[0023] 2. The utility model can effectively improve the service life and heat transfer efficiency of the finned heat exchanger and improve the energy-saving effect of heat pump type sludge low-temperature drying. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings described herein are used to provide a further understanding of the embodiments of the present utility model, constitute a part of this application, and do not constitute a limitation of the embodiments of the present utility model. In the drawings:

[0025] Figure 1 It is a structural schematic diagram of the utility model;

[0026] Figure 2 A schematic diagram of the front view structure of the cleaning component provided for the utility model;

[0027] Figure 3 A schematic diagram of the side structure of the cleaning component provided for the utility model;

[0028] Figure 4 The utility model provides a schematic diagram of the air jet structure of the cleaning component.

[0029] Marks and corresponding parts names in the attached drawings:

[0030] 1-motor, 2-driving wheel, 3-first pulley, 3.1-first fixed pulley, 3.2-second fixed pulley, 3.3-third fixed pulley, 3.4-fourth fixed pulley, 4-transmission belt, 5-guide rail, 6-guide wheel, 7-injection pipe, 8-air inlet A, 9-air inlet B, 10-injection port. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solutions and advantages of the utility model more clearly understood, the utility model is further described in detail below in conjunction with embodiments and drawings. The schematic implementation manner of the utility model and its description are only used to explain the utility model and are not intended to limit the utility model.

[0032] Example 1

[0033] This embodiment 1 provides an automatic cleaning device for a sludge drying machine, such as Figure 1-Figure 4 As shown, it includes a cleaning component and a driving component. The cleaning component includes an air jet pipe 7, which is vertically mounted on the opposite side of the fin heat exchanger, and an air jet port 10 is provided on the side of the air jet pipe 7 facing the fin heat exchanger. The air jet port 10 sprays a high-speed fluid toward the fin heat exchanger. In this embodiment, the high-speed fluid is high-pressure compressed air, and it can also be high-pressure water. However, due to the influence of the fin strength, the use of high-pressure water for flushing will result in a low flushing pressure and incomplete cleaning. Therefore, in this embodiment, the high-speed fluid is high-pressure compressed air, that is, the air jet port 10 sprays a high-speed airflow toward the fin heat exchanger to form a high-speed air curtain on the surface of the fin heat exchanger, and the output end of the driving component is connected to the cleaning component to make the cleaning component reciprocate, thereby effectively improving the service life and heat transfer efficiency of the fin heat exchanger and improving the energy-saving effect of heat pump type sludge low-temperature drying.

[0034] Among them, see Figure 1-Figure 3 As shown, the jet pipe 7 is provided with two jet ports 10, which are evenly arrayed along the axial direction of the jet pipe 7, and each jet port 10 is matched with an independent air inlet A8 and an air inlet B9, respectively. The independent air inlets can make the high-speed gas pressure ejected from each jet port 10 the same, thereby avoiding damage to the fins.

[0035] And to improve cleaning efficiency, refer to 3 and Figure 4 As shown, the air jet 10 is a slit-type air outlet arranged along the axial direction of the air jet pipe 7, and the axial cross-sectional shape of the slit-type air outlet is a V-shape with an angle α, and the V-shaped bottom surface of the air jet 10 is a plane with a width b, the angle α ranges between 30° and 60°, and the width b ranges between 0.4 mm and 0.8 mm. The air flows out through the slit-type air outlet, converting the potential energy of the fluid into kinetic energy to form a high-speed air curtain blowing toward the fins of the heat exchanger.

[0036] Preferably, in this embodiment, in order to double the air flow rate, the angle α is set to 45 degrees and the outlet width b is 0.5 mm, which is optimal.

[0037] In order not to affect the operation of the dryer and to ensure full-time and fully automatic operation, please refer to Figure 1 As shown, the driving assembly includes an active driving assembly and a driven driving assembly, the active driving assembly includes a motor 1 and a driving wheel 2, the driving wheel 2 is connected to the output end of the motor 1, the driven assembly includes a transmission belt 4, a first fixed pulley 3.1, a second fixed pulley 3.2, a third fixed pulley 3.3 and a fourth fixed pulley 3.4, the first fixed pulley 3.1, the second fixed pulley 3.2, the third fixed pulley 3.3 and the fourth fixed pulley 3.4 are evenly distributed around the fin heat exchanger, specifically, the first fixed pulley 3.1 includes two inner fixed pulleys and an outer fixed pulley connected in series on the same axis, and the transmission belt 4 is a circular transmission belt connected end to end The circling direction is the driving wheel 2, the second fixed pulley 3.2, the third fixed pulley 3.3, the inner fixed pulley of the first fixed pulley 3.1, the fourth fixed pulley 3.4, the outer fixed pulley of the first fixed pulley 3.1, and finally returns to the driving wheel 2 to form a transmission belt 4 connected end to end; and the axial ends of the injection pipe 7 are respectively fixed on the two sections of the uppermost and lowermost transmission belts 4 that move in the same direction; when the driving wheel 2 is driven by the motor 1, the driving belt 4 is driven to reciprocate, and with the reciprocating motion of the transmission belt 4, the injection pipe 7 fixed on the transmission belt 4 also stably reciprocates between the left and right sides of the finned heat exchanger.

[0038] In order to provide positioning support for the air jet pipe 7 during reciprocating motion, in this embodiment, please refer to Figure 1-Figure 3 As shown, the driven drive assembly is provided with independent guide rails 5 above and below the two sides of the finned heat exchanger, and guide wheels 6 matching the guide rails 5 are provided at both axial ends of the jet pipe 7. Through the action of the multiple guide wheels 6 and the multiple guide rails 5, the jet pipe 7 can only move horizontally left and right along the guide rails 5.

[0039] Example 2

[0040] This embodiment 2 provides an automatic cleaning device for a sludge drying machine based on the technical solution of embodiment 1. Figure 1-Figure 4As shown, the difference is that, in order to improve the cleaning efficiency, the cleaning component includes a plurality of air jet pipes 7, and the plurality of air jet pipes 7 are arranged at intervals along the moving direction of the cleaning component.

[0041] Example 3

[0042] This embodiment 3 provides a sludge dryer, which adopts an automatic cleaning device for the sludge dryer in embodiment 1 or embodiment 2. The automatic cleaning device is independently arranged on the opposite side of the fin heat exchanger, which will not affect the operation of the dryer and can work all-weather and fully automatically, thereby improving the energy-saving effect of the sludge dryer.

[0043] The specific implementation methods described above further illustrate the purpose, technical solutions and beneficial effects of the utility model in detail. It should be understood that the above description is only the specific implementation method of the utility model and is not used to limit the protection scope of the utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. An automatic cleaning device for a sludge drying machine, characterized in that: include: A cleaning assembly, the cleaning assembly comprising an air jet pipe (7), the air jet pipe (7) being mounted on a side directly opposite to the fin heat exchanger, and an air jet port (10) being arranged on the air jet pipe (7) on a side facing the fin heat exchanger, the air jet port (10) jetting a high-speed fluid toward the fin heat exchanger to form a high-speed fluid curtain on the surface of the fin heat exchanger; A driving component, wherein the output end of the driving component is connected to the cleaning component to make the cleaning component reciprocate.

2. The automatic cleaning device for a sludge drying machine according to claim 1, characterized in that: The cleaning component comprises a plurality of the air jet pipes (7), and the plurality of the air jet pipes (7) are arranged at intervals along the moving direction of the cleaning component.

3. An automatic cleaning device for a sludge drying machine according to claim 1 or 2, characterized in that: The air jet pipe (7) is provided with a plurality of air jet ports (10), and the plurality of air jet ports (10) are evenly arrayed along the axial direction of the air jet pipe (7).

4. The automatic cleaning device for a sludge drying machine according to claim 3, characterized in that: Each of the air jets (10) is matched with an independent air inlet.

5. The automatic cleaning device for a sludge drying machine according to claim 3, characterized in that: The air jet (10) is a slit-shaped air outlet arranged along the axial direction of the air jet pipe (7).

6. The automatic cleaning device for a sludge drying machine according to claim 5, characterized in that: The axial cross-sectional shape of the air jet (10) is a V-shape with an angle α, and the V-shaped bottom surface of the air jet (10) is a plane with a width b.

7. The automatic cleaning device for a sludge drying machine according to claim 6, characterized in that: The angle α ranges from 30° to 60°, and the width b ranges from 0.4 mm to 0.8 mm.

8. The automatic cleaning device for a sludge drying machine according to claim 1, characterized in that: The driving assembly includes an active driving assembly and a driven driving assembly; The active drive assembly comprises a motor (1) and a driving wheel (2), wherein the driving wheel (2) is connected to an output end of the motor (1); The driven drive assembly comprises a transmission belt (4), a first fixed pulley (3.1), a second fixed pulley (3.2), a third fixed pulley (3.3) and a fourth fixed pulley (3.4); the first fixed pulley (3.1) comprises an inner fixed pulley and an outer fixed pulley connected in series on the same axis; the transmission belt (4) is a loop-type transmission belt connected end to end, and its winding direction is the driving wheel (2), the second fixed pulley (3.2), the third fixed pulley (3.3), the inner fixed pulley of the first fixed pulley (3.1), the fourth fixed pulley (3.4), the outer fixed pulley of the first fixed pulley (3.1), and finally returns to the driving wheel (2) to form a transmission belt connected end to end; The axial ends of the jet pipe (7) are respectively fixed to the uppermost and lowermost sections of the transmission belt (4) moving in the same direction; The driving wheel (2) is driven by the motor (1) to drive the transmission belt (4) to perform reciprocating motion. As the transmission belt (4) performs reciprocating motion, the jet pipe (7) fixed on the transmission belt (4) also performs stable reciprocating motion between the left and right sides of the finned heat exchanger.

9. The automatic cleaning device for a sludge drying machine according to claim 8, characterized in that: The cleaning component is provided with guide rails (5) at the top and bottom, and guide wheels (6) matching the guide rails (5) are respectively provided at the axial ends of the air injection pipe (7).

10. A sludge drying machine, characterized in that: An automatic cleaning device for a sludge dryer as described in any one of claims 4 to 9 is used.

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