Ultrasonic cleaning device

Abstract

The utility model relates to an ultrasonic cleaning device, including an ultrasonic generator that converts mains electricity into a high-frequency alternating current signal that matches an ultrasonic transducer, and a blade ultrasonic probe; the blade ultrasonic probe includes an ultrasonic transducer, an horn and a blade head that are connected in sequence; wherein the ultrasonic transducer converts the high-frequency alternating current signal into an ultrasonic wave; the horn changes the ultrasonic amplitude; the blade head resonates with the ultrasonic wave and acts on the membrane wire inside the MBR membrane module, the blade head includes a support portion and a blade portion, and the blade portion is inserted between the membrane wires inside the MBR membrane module. Through the design of the blade head, it can be inserted between the membrane wires inside the MBR membrane module, and under the condition of ensuring strength, the ultrasonic wave is made to generate cavitation and sound pressure in the sludge medium through resonance, so that the pollutants that are compacted on the upper part and the top of the membrane wire fall off, thereby effectively removing the sludge on the upper part of the membrane wire inside the MBR membrane module and improving the filtration efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of ultrasonic cleaning of MBR membrane modules, in particular to an ultrasonic cleaning device. Background Art

[0002] MBR membrane bioreactor (Membrane Bio-Reactor) is a new water treatment technology that organically combines membrane separation technology with biotechnology. It uses membrane separation equipment to intercept the activated sludge and macromolecular organic matter in the biochemical reaction tank, greatly improving the solid-liquid separation efficiency; and due to the increase in the concentration of activated sludge in the aeration tank and the emergence of special bacteria (especially dominant bacteria) in the sludge, the biochemical reaction rate is increased; at the same time, the amount of residual sludge is reduced by reducing the F / M ratio. Although the MBR membrane module has basically solved many problems existing in the traditional activated sludge method, the MBR membrane module will still produce a large amount of residual sludge during operation. The residual sludge will adhere to the surface of the membrane fibers and form semi-solid / fixed sticky substances, which will reduce the reaction efficiency of the MBR membrane module. Therefore, it is necessary to clean the sludge of the MBR membrane module regularly.

[0003] When the existing MBR membrane module is offline for cleaning sludge, a high-pressure water gun is used to flush the membrane surface for a long time, or the sludge attached to the membrane surface is peeled off manually, or an ultrasonic cleaning device is used to vibrate and clean the sludge on the membrane surface. Among them, the ultrasonic cleaning device has a better effect.

[0004] The ultrasonic cleaning equipment currently on the market is an integrated board composed of vibrators, or a single circular probe that emits ultrasonic waves through the medium to the near surface of the MBR membrane module. It cannot penetrate into the membrane module to break up the sludge blocks. Therefore, when using ultrasonic cleaning of the membrane module, it is necessary to use a high ultrasonic frequency and keep it turned on for a long time, which will damage the membrane material. At the same time, the existing ultrasonic equipment probe is large in size and cannot meet the space requirements for inserting into the membrane module. In summary, there is currently a lack of ultrasonic equipment dedicated to MBR membrane modules that can meet the needs of offline cleaning of membrane modules without damaging the membrane material. Utility Model Content

[0005] Based on this, the purpose of the utility model is to provide an ultrasonic cleaning device.

[0006] An ultrasonic cleaning device, comprising:

[0007] Ultrasonic generator, which converts the mains electricity into a high-frequency AC signal that matches the ultrasonic transducer;

[0008] The blade ultrasonic probe comprises an ultrasonic transducer, an horn and a blade head which are connected in sequence; wherein the ultrasonic transducer converts a high-frequency alternating current signal into an ultrasonic wave; the horn changes the ultrasonic wave amplitude; the blade head resonates with the ultrasonic wave, and the blade head comprises a supporting portion and a blade portion.

[0009] Compared with the prior art, the utility model converts municipal current into a high-frequency alternating current signal matching the ultrasonic transducer through an ultrasonic generator, the ultrasonic transducer converts input electrical energy into ultrasonic waves, the horn amplifies the amplitude of the ultrasonic waves output by the ultrasonic transducer, and loads the energy onto the blade head. The blade head is designed so that it can be inserted between the membrane wires inside the MBR membrane module. While ensuring the strength, the ultrasonic wave is used to generate cavitation and sound pressure in the sludge medium through resonance, thereby causing the pollutants compacted on the upper part and the top of the membrane wire to fall off, thereby effectively removing the sludge on the upper part of the membrane wire inside the MBR membrane module and improving the filtration efficiency.

[0010] Furthermore, the frequency setting range of the ultrasonic generator is 25KHz to 40KHz.

[0011] Furthermore, the thickness of the support portion is 10 mm to 20 mm, and the length and width are 50 cm*3 cm; the thickness of the blade portion is 4 mm to 6 mm, and the length and width are 50 cm*20 cm.

[0012] Furthermore, the support portion and the blade portion are made of titanium alloy.

[0013] Furthermore, a thin film pressure sensor is arranged on the supporting portion.

[0014] Furthermore, it also includes a controller, which is electrically and / or communicatively connected to the ultrasonic generator and the thin film pressure sensor. The controller receives the pressure signal of the thin film pressure sensor, and when the pressure is lower than the pressure threshold for a period of time and the preset cleaning time has not yet arrived, the controller controls the ultrasonic generator to stop.

[0015] Furthermore, it also includes a warning device, which is electrically and / or communicatively connected to the controller. The warning device is an indicator light or a buzzer. The controller controls the start and stop of the warning device to remind the user of the cleaning status.

[0016] Furthermore, the blade ultrasonic probe also includes a hand-held handle, and the hand-held handle is sleeved on the outside of the ultrasonic transducer through a clamping portion.

[0017] Furthermore, the single working time of the ultrasonic generator is set at 15 minutes to 25 minutes.

[0018] Furthermore, it also includes a fixing member for fixing the blade ultrasonic probe on the outer frame of the MBR membrane module.

[0019] In order to better understand and implement the present invention, the present invention is described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the utility model;

[0021] Figure 2 The figure is a schematic diagram of the structure of the blade ultrasonic probe of the utility model. DETAILED DESCRIPTION

[0022] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention.

[0023] The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the embodiments of the present application. The singular forms of "a" and "the" used in the embodiments of the present application and the appended claims are intended to include plural forms, unless the context clearly indicates other meanings. It should also be understood that, unless otherwise specified, "multiple" and "several" refer to two or more; "and / or" refers to and includes any or all possible combinations of one or more associated listed items; "first", "second", "third", etc. are only used to distinguish, rather than to describe a specific order or sequence, and cannot be understood as indicating or implying relative importance.

[0024] In order to solve the problem that when the existing MBR membrane module is cleaned offline, the MBR membrane module is damaged when it is disassembled and placed in an ultrasonic cleaning tank for cleaning; or when an ultrasonic integrated board with multiple ultrasonic vibrators is arranged around the MBR membrane module for cleaning, the membrane module needs to be ultrasonically cleaned for a long time to remove the sludge, which causes damage to the membrane fibers. The present invention proposes an ultrasonic cleaning device that can be inserted into the membrane module and placed between the membrane fibers. The device can effectively remove the sludge on the membrane fibers in a short time without damaging the membrane fibers and without disassembling the membrane module. It can avoid damage to the membrane fibers and even the membrane module while effectively removing the sludge, thereby effectively improving the filtration efficiency.

[0025] See also Figure 1 and Figure 2The ultrasonic cleaning device proposed in the utility model includes an ultrasonic generator 1, a blade ultrasonic probe 2 and a controller (not shown). The blade ultrasonic probe 2 is connected to the ultrasonic generator 1 through a signal line, and is used to receive the high-frequency AC signal emitted by the ultrasonic generator 1, and convert the high-frequency AC signal into 25-40KHz ultrasonic waves, and break the sludge and other attachments attached to the surface of the membrane wire through vibration, so that the sludge or other attachments are separated from the surface of the membrane wire, thereby improving the filtration efficiency of the membrane wire. The controller is electrically connected and / or communicatively connected to the ultrasonic generator 1 and the blade ultrasonic probe 2, and is used to control the start and stop of the ultrasonic generator 1 and the frequency and amplitude adjustment according to preset operating parameters and / or feedback signals of the blade ultrasonic probe 2.

[0026] The ultrasonic generator 1 is used to convert the mains electricity into a high-frequency AC signal that matches the ultrasonic transducer. Existing ultrasonic generators with adjustable frequencies between 25KHz and 40KHz and ultrasonic powers between 300W and 500W can be used, and this application does not impose any restrictions.

[0027] The blade ultrasonic probe 2 includes an ultrasonic transducer 22 , a horn 24 and a blade head 26 which are connected in sequence.

[0028] The ultrasonic transducer 22 is driven by high-frequency electric energy and generates regular vibration under the excitation of the electric field, causing the ultrasonic probe to resonate. The vibration frequency can reach up to 40KHz and the sound intensity can reach up to 0.71W / cm 2 .

[0029] The horn 24 is connected to the ultrasonic transducer 22 and is used to increase or decrease the amplitude output by the ultrasonic transducer 22. The amplitude adjustment range of the horn 24 is 10um to 100um. The horn is made of titanium alloy.

[0030] See also Figure 2 The blade head 26 is connected to the horn 24, and is used to resonate with the ultrasonic wave generated by the ultrasonic transducer 22, and transmit the ultrasonic wave to the surface of each membrane wire of the MBR membrane module to contact the sludge, and its length meets the ultrasonic resonance requirements. The blade head 26 includes a support portion 261 and a blade portion 262. The thickness of the support portion 261 is 10mm to 20mm, and the length and width are 50cm*3cm. The thickness of the blade portion 262 is 4mm to 6mm, and the length and width are 50cm*20cm. There is a contraction transition connection part between the support portion 261 and the blade portion 262, or the support portion 261 and the blade portion 262 are integrally formed. The blade head is made of titanium alloy.

[0031] Furthermore, the blade ultrasonic probe 2 also includes a thin film pressure sensor (not shown) arranged on the support portion 261, and the thin film pressure sensor is electrically and / or communicatively connected to the controller for transmitting the detected pressure between the blade head 26 and the sludge to the controller.

[0032] Furthermore, the blade ultrasonic probe 2 further comprises a hand-held handle 20, which is sleeved on the outside of the ultrasonic transducer 22 via a clamping portion, and the hand-held portion and the transducer are detachable by opening and closing the clamping portion. Furthermore, the hand-held handle is an adjustable and retractable hand-held handle.

[0033] Furthermore, the blade ultrasonic probe 2 also includes a fixing member (not shown), which is sleeved on the outside of the handheld handle 20 or the ultrasonic transducer 22 through a clamping portion, and the fixing member is detachable from the handheld handle 20 or the ultrasonic transducer 22 through the opening and closing of the clamping portion. The other end of the fixing member opposite to the clamping end of the handheld handle 20 or the other end opposite to the clamping end of the ultrasonic transducer 22 is also provided with a hanging fixing portion for hanging and fixing on the outer frame of the MBR membrane module.

[0034] The controller can be integrated with the ultrasonic generator 1; or it can be set outside, such as an external mobile terminal such as a machine end, a PC end, etc., which is not limited by this application. The controller is used to control the start and stop of the ultrasonic generator 1 and the adjustment of related parameters according to the cleaning time, cleaning frequency and cleaning amplitude preset by the user. Preferably, the single working time of the ultrasonic generator 1 is between 15min and 25min, and the cleaning time is controlled to ensure that no damage is caused to the membrane module.

[0035] Furthermore, the controller receives a pressure signal from the film pressure sensor, and when the pressure is lower than the pressure threshold for a period of time and the preset cleaning time has not yet arrived, the controller controls the ultrasonic generator 1 to stop.

[0036] Furthermore, the ultrasonic cleaning device also includes a warning device (not shown), which is electrically and / or communicatively connected to the controller, and the controller controls the start and stop of the warning device to remind the user of the cleaning status. The warning device can be an indicator light, which reminds the user of the completion of cleaning or cleaning error by flashing the light; the warning device can be a buzzer, which reminds the user of the completion of cleaning or cleaning error by sounding the whistle.

[0037] When working, set the frequency signal and running time, insert the blade ultrasonic probe into the sheet membrane wires to be cleaned through the handle and / or the fixing parts, and press the power switch of the ultrasonic generator to power on. When cleaning, when the green indicator light of the warning device is on, it means that the equipment is running normally; when the yellow indicator light is on, the cleaning time of the area has expired and the cleaning area should be changed; when the red indicator light is on, it reminds that there is an error in the operation of the equipment.

[0038] The ultrasonic cleaning device of the present application converts municipal current into a high-frequency alternating current signal matching the ultrasonic transducer through an ultrasonic generator, the ultrasonic transducer converts input electrical energy into ultrasonic waves, the amplitude transformer amplifies the amplitude of the ultrasonic waves output by the ultrasonic transducer, and loads the energy onto the blade head. The blade head is designed so that it can be inserted between the membrane wires inside the MBR membrane group. While ensuring the strength, the ultrasonic waves are used to generate cavitation and sound pressure in the sludge medium through resonance, thereby causing the pollutants compacted on the upper part and the top of the membrane wire to fall off, thereby effectively removing the sludge on the upper part of the membrane wire inside the MBR membrane group and improving the filtration efficiency.

[0039] The above embodiments only express several implementation methods of the present invention, and the descriptions are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, and the present invention is also intended to include these modifications and modifications.

Claims

1. An ultrasonic cleaning device, comprising: Ultrasonic generator, which converts the mains electricity into a high-frequency AC signal that matches the ultrasonic transducer; The blade ultrasonic probe comprises an ultrasonic transducer, an amplitude transformer and a blade head which are connected in sequence; wherein the ultrasonic transducer converts a high-frequency alternating current signal into an ultrasonic wave; the amplitude transformer changes the ultrasonic wave amplitude; the blade head resonates with the ultrasonic wave, and the blade head comprises a supporting portion and a blade portion, and a thin film pressure sensor is arranged on the supporting portion.

2. The ultrasonic cleaning device according to claim 1, characterized in that: The frequency setting range of the ultrasonic generator is 25KHz to 40KHz.

3. The ultrasonic cleaning device according to claim 1, characterized in that: The thickness of the support portion is 10 mm to 20 mm, and the length and width are 50 cm*3 cm; the thickness of the blade portion is 4 mm to 6 mm, and the length and width are 50 cm*20 cm.

4. The ultrasonic cleaning device according to claim 3, characterized in that: The supporting part and the blade part are made of titanium alloy.

5. The ultrasonic cleaning device according to claim 4, characterized in that: It also includes a controller, which is electrically and / or communicatively connected to the ultrasonic generator and the thin film pressure sensor. The controller receives the pressure signal from the thin film pressure sensor and controls the ultrasonic generator to stop when the pressure is lower than the pressure threshold for a period of time and the preset cleaning time has not yet arrived.

6. The ultrasonic cleaning device according to claim 5, characterized in that: It also includes a warning device, which is electrically and / or communicatively connected to the controller. The warning device is an indicator light or a buzzer. The controller controls the start and stop of the warning device to remind the user of the cleaning status.

7. The ultrasonic cleaning device according to any one of claims 1 to 6, characterized in that: The blade ultrasonic probe also includes a hand-held handle, and the hand-held handle is sleeved on the outside of the ultrasonic transducer through a clamping portion.

8. The ultrasonic cleaning device according to claim 7, characterized in that: The single working time of the ultrasonic generator is set at 15min to 25min.

9. The ultrasonic cleaning device according to claim 8, characterized in that: It also includes a fastener for fixing the blade ultrasonic probe on the outer frame of the MBR membrane module.

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