Ultrasonic filter cleaning device

Abstract

This utility model discloses a filter media cleaning device incorporating ultrasonic waves, comprising a sealed tank fixedly installed at the top of a wastewater treatment equipment. The tank has a filter media inlet, a vent, and a water outlet. An annular oil-collecting device is arranged along the top of the inner wall of the tank. A stirring device and two or more ultrasonic cleaning devices are arranged extending downwards from the top of the tank from the center of the oil-collecting device. Both the stirring device and the ultrasonic cleaning devices extend to the bottom of the tank, and the ultrasonic cleaning devices are evenly distributed around the stirring device.

Description

Technical Field

[0001] This utility model relates to the field of oily wastewater treatment technology in the petroleum and petrochemical industries, and more specifically, to a filter media cleaning device that integrates high-power ultrasonic waves. Background Technology

[0002] Filters are widely used in the oil and petrochemical industries for treating oily wastewater. Specifically, a media filter's tank is filled with different filter media to remove different components from the wastewater. These media filters require cleaning after a period of operation. Currently, domestic oilfields mainly use backwashing to clean the filter media. Backwashing involves flowing water backwards through the filter media layer, causing the media to expand and suspend. The shear force of the water flow and the friction between particles clean the filter media layer, removing contaminants that are discharged with the backwash water. However, in the wastewater treatment of the oil and petrochemical industries, the wastewater contains impurities such as sludge and polymers that are difficult to remove through backwashing. Existing backwashing processes are insufficient to wash away these impurities. Increasing the intensity of the backwash water can easily wash the filter media out of the filter, resulting in damage. Utility Model Content

[0003] The purpose of this invention is to provide a filter media cleaning device that integrates ultrasonic waves, which can effectively solve the current problems of low cleaning efficiency and incomplete cleaning in filter backwashing, while also having the characteristics of high cleaning efficiency, good effect, and time and power saving.

[0004] The ultrasonic filter media cleaning device of this utility model includes a sealed tank fixedly installed at the top of the sewage treatment equipment. The tank is provided with a filter media inlet, a vent, and a water outlet. An annular oil collection device is arranged along the top of the inner wall of the tank. A stirring device and two or more ultrasonic cleaning devices are arranged in the middle of the oil collection device and extending downward from the top of the tank. The stirring device and the ultrasonic cleaning devices both extend to the bottom of the inner wall of the tank, and the ultrasonic cleaning devices are evenly distributed around the stirring device.

[0005] Preferably, the tank body includes a cylindrical body, a convex arc-shaped top cover and a bottom cover that are sealed to the body.

[0006] Preferably, the ultrasonic cleaning device is in the shape of a slender cylinder and includes a transducer, a vibrating rod, and an extension rod. The transducer is fixedly installed on the top of the tank cover, and the vibrating rod and the extension rod extend into the bottom of the tank.

[0007] Preferably, the oil collection device is generally annular, including an annular horizontal plate fixedly connected to the inner wall of the tank, and a vertical plate integrally formed with and perpendicular to the annular horizontal plate, the vertical plate being provided with multiple serrated oil collection ports.

[0008] Preferably, the side wall of the tank is provided with multiple level gauge installation ports.

[0009] When using the cleaning device of this invention to backwash the filter media in the filter, the motor of the stirring device is started. The motor drives the stirring shaft and the blades to rotate in a circular motion, stirring the filter media that has entered the tank. At the same time, the ultrasonic cleaning device is turned on. The ultrasonic waves propagate continuously in the liquid and clean the dirt on the surface of the object. It can remove the dirty oil, suspended particles and other impurities accumulated on the surface of the filter media. The removed dirty oil enters the oil collection device and is discharged from the tank, thus completing the cleaning of the filter media and restoring the regenerative filtration performance of the filter media. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the filter media cleaning device in this utility model.

[0011] Figure 2 This is a cross-sectional three-dimensional structural diagram of the filter media cleaning device of this utility model.

[0012] Figure 3 This is a schematic diagram of the ultrasonic cleaning device in this utility model.

[0013] Figure 4 This is a three-dimensional structural diagram of the oil collection device in this utility model.

[0014] Figure 5 This is a cross-sectional structural schematic diagram of the oil collection device in this utility model. Detailed Implementation

[0015] The ultrasonic filter cleaning device of this utility model will now be described in detail with reference to the accompanying drawings.

[0016] like Figure 1 and Figure 2 As shown, the filter media cleaning device integrating ultrasonic waves in this invention includes a tank 1, an ultrasonic cleaning device 2, and a stirring device 3. This invention is illustrated using a cylindrical tank 1 as an example; its specific structure is as follows.

[0017] The tank 1 includes a cylindrical body 10, a top cover 11 and a bottom cover 12 sealed to the body 10. Both the top cover 11 and the bottom cover 12 are convex arc-shaped, forming a sealed container inside the tank 1 after being sealed and assembled with the cylindrical body 10. An inlet 13, a water outlet 14, and an oil outlet 15 are provided on the side wall of the body 10, and a vent 16 is provided at the bottom of the bottom cover 12. A stirring device mounting port and two ultrasonic cleaning device mounting ports (two are used as an example in this invention, but three or four are possible) are provided on the top of the top cover 11. The stirring device 3 and the ultrasonic cleaning device 2 are respectively sealed and fixed to the top cover 11 through the stirring device mounting port and the ultrasonic cleaning device mounting port, and extend into the interior of the tank 1 after assembly.

[0018] like Figure 2 and Figure 3 As shown, the ultrasonic cleaning device 2 is a slender cylindrical shape, including a transducer 20, a vibrating rod 21, and an extension rod 22. Two ultrasonic cleaning devices 2 are symmetrically installed on both sides of the stirring device 3. The transducer 20 is fixedly installed on the top of the tank body 1's top cover 11, sealing it in place. The vibrating rod 21 and extension rod 22 extend into the bottom of the tank body 1, meaning the filter material inside the tank body 1 can completely cover the vibrating rod 21 and extension rod 22. The extension rod 22 can move up and down along the inner wall of the vibrating rod 21 and stop at any position. During use, the extension rod 22 can also move up and down along the inner wall of the vibrating rod 21 and stop at different positions. During operation, the ultrasonic cleaning device 2 can diffuse ultrasonic waves of a specific wavelength around itself and can also vibrate the ultrasonic waves emitted in all directions, further enhancing the vibration effect on the filter material.

[0019] like Figure 2 As shown, the stirring device 3 includes a motor 30, a stirring shaft 31, and four blades 32. The motor 30 is fixedly installed above the top cover 11, and the four blades 32 are distributed at the bottom of the tank body 1. They are connected to the motor 30 after passing through the top cover 11 via the stirring shaft 31. Preferably, the blades 32 can be arranged in two or more layers along the stirring shaft, and the size of the blades 32 is designed according to the installation position of the ultrasonic cleaning device 2.

[0020] An oil collection device 4 is fixedly installed inside the tank body 1 above the water outlet 14, along the inner wall of the tank body 1. Figure 2 , Figure 4 and Figure 5As shown, the oil collection device 4 is integrally formed from the same material as the tank body 1, and is generally annular in shape. It includes an annular horizontal plate 40 that is fixedly connected (welded) to the inner wall of the tank body 1, and a vertical plate 41 integrally formed with and perpendicular to the annular horizontal plate 40. The vertical plate 41 has multiple serrated oil collection ports 42 integrally formed. The annular through hole 43 in the middle of the oil collection device 4 allows the stirring device 3 and the ultrasonic cleaning device 2 to pass through. The oil collection groove formed between the vertical plate 41 and the inner wall of the tank body 1 is connected to the oil discharge port 15.

[0021] The cleaning device in this invention is fixedly installed on the inner top of the sewage treatment equipment via support legs 17. The feed inlet 13 extends out of the sewage treatment equipment via a conduit and is connected to the outlet of a scrubbing pump installed outside the sewage treatment equipment. The water outlet 14 is directly connected to the sewage collection tank installed inside the sewage treatment equipment. The oil collection device 4 is connected to the oil collection mechanism installed inside the sewage treatment equipment via an oil discharge port 15. The vent 16 is directly connected to the feed inlet of the cleaning solid-liquid separation device installed inside the sewage treatment equipment. After the cleaning solid-liquid separation device separates the filter media into solids and liquids, it returns the filter media to the sewage treatment equipment. In addition, multiple level gauge installation ports 18 are provided on the side wall of the tank 1 to facilitate the measurement of the height of the filter media inside the tank 1 and to facilitate automated control. When the wastewater treatment equipment needs to be cleaned after running for a period of time, a scrubbing pump is used to suck the filter media out of the wastewater treatment equipment. After mechanical scrubbing by the scrubbing pump, the filter media enters the cleaning device of this invention through the inlet 13. Simultaneously, the stirring device 3 is turned on, and the ultrasonic cleaning device 2 is turned on at the same time, emitting ultrasonic waves with a frequency of 40kHz and a power density of 0.5W / cm² for 10-15 minutes. While agitating the filter media, the cavitation effect is used to peel off the oil stains on the surface of the packing material, cleaning the dirt on the surface of the object. The stirring device 3 assists in agitation at a speed of 100-200rpm, peeling off the accumulated oil, suspended particles, and other impurities on the surface of the filter media, thoroughly cleaning the filter media. The oil generated after cleaning flows out of the tank 1 through the oil collection device 4, completing the filter media cleaning and restoring the regenerative filtration performance of the filter media.

Claims

1. A filter media cleaning device incorporating ultrasonic waves, comprising a sealed tank fixedly installed at the top of a wastewater treatment equipment, the tank having a filter media inlet, a vent, and a water outlet, characterized in that, An annular oil collection device is provided along the top of the inner wall of the tank. A stirring device and two or more ultrasonic cleaning devices are provided in the middle of the oil collection device and extending downward from the top of the tank. The stirring device and the ultrasonic cleaning devices both extend to the bottom of the inner wall of the tank, and the ultrasonic cleaning devices are distributed at equal intervals around the stirring device.

2. The filter media cleaning device incorporating ultrasonic waves according to claim 1, characterized in that, The tank body includes a cylindrical body, a convex arc-shaped top cover and a bottom cover that are sealed to the body.

3. The filter media cleaning device incorporating ultrasonic waves according to claim 1, characterized in that, The ultrasonic cleaning device is a slender cylindrical shape and includes a transducer, a vibrating rod, and an extension rod. The transducer is fixedly installed on the top of the tank cover, and the vibrating rod and the extension rod extend into the bottom of the tank.

4. The filter media cleaning device incorporating ultrasonic waves according to claim 1, characterized in that, The oil collection device is generally circular in shape, including an annular horizontal plate fixedly connected to the inner wall of the tank, and a vertical plate integrally formed with the annular horizontal plate and perpendicular to it. The vertical plate is provided with multiple serrated oil collection ports.

5. The filter media cleaning device incorporating ultrasonic waves according to claim 1, characterized in that, The tank has multiple level gauge installation ports on its side wall.

Images