CN116511152A - Pipeline cleaning device for water purifier - Google Patents

Abstract

The application relates to the technical field of household appliances and discloses a pipeline cleaning device for a water purifier, which comprises a cleaning water tank, a spray head, a water pump, a water return pipeline and an ultrasonic vibrator, wherein the cleaning water tank is used for storing cleaning water; the spray head is connected with the cleaning water tank, and water sprayed by the spray head enters the pipeline to be cleaned from the first end of the pipeline to be cleaned; the water pump is used for providing spray pressure for the spray head; the water inlet end of the water return pipeline is connected with the second end of the pipeline to be cleaned, and the water outlet end of the water return pipeline is connected with the cleaning water tank; the ultrasonic vibrator is arranged in the spray head, and ultrasonic waves emitted by the ultrasonic vibrator enter the pipeline to be cleaned along with water flow; when the pipeline to be cleaned is cleaned, cleaning water sequentially circulates through the cleaning water tank, the spray head, the pipeline to be cleaned and the water return pipeline.

Description

Pipeline cleaning device for water purifier

Technical Field

The application relates to the technical field of household appliances, for example to a pipeline cleaning device for a water purifier.

Background

The water purifier is a common household appliance and is mainly divided into a water purifier adopting an ultrafiltration technology and a water purifier adopting a reverse osmosis technology, and the two water purifiers both use a filter element to filter impurities in water so as to realize the water purifying function. The water purifier is deteriorated in water purifying function after a certain time of operation, and thus it is required to clean the water purifier periodically.

Disclosed in the prior art is a water purifier with automatic backwash, comprising: the water inlet end of the first-stage filtering device is connected with a water inlet pipe, a first electromagnetic valve is connected to the water inlet pipe, the water outlet end of the first-stage filtering device is connected with a first-stage water outlet pipe, the other end of the first-stage water outlet pipe is connected with the water inlet end of the water storage tank, a second electromagnetic valve is connected to the first-stage water outlet pipe, the water return end of the water storage tank is connected with a return pipe, the other end of the return pipe is connected with the water inlet end of the booster pump, a third electromagnetic valve is connected to the return pipe, the water outlet end of the booster pump is connected with a first branch pipe, the other end of the return pipe is connected with the water outlet end of the first-stage filtering device, the water outlet end of the first-stage filtering device is connected with a first-stage waste liquid pipe, a fourth electromagnetic valve is connected to the first-stage waste liquid pipe, and the outer side wall of the first-stage filtering device is provided with an ultrasonic transducer. The ultrasonic transducer is adopted to carry out ultrasonic cleaning on the first-stage filter element and is matched with purified water to carry out backflushing cleaning on the first-stage filter element, so that the filter element is cleaned more cleanly and thoroughly.

In the process of implementing the embodiments of the present disclosure, it is found that at least the following problems exist in the related art:

although the filter element of the water purifier can be replaced or cleaned, as the structural components of the water purifier, the pipeline, the integrated waterway and the filter cartridge cannot be replaced, and in long-term use, suspended matters brought by a tap water pipe network can be deposited on the wall surfaces of the components. These suspensions include a part of organics, residual chlorine, metal ions, microorganisms, etc., and even though filtered by PP, activated carbon, RO membranes, a small amount of the suspensions are deposited on the wall; microorganisms can form biofilm on the walls, which can cause odor, wall corrosion and health risks after long-term accumulation.

Disclosure of Invention

The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview, and is intended to neither identify key/critical elements nor delineate the scope of such embodiments, but is intended as a prelude to the more detailed description that follows.

The embodiment of the disclosure provides a pipeline cleaning device for a water purifier, so as to solve the problem of how to improve the cleaning effect of the water purifier.

In some embodiments, the pipe washing device for a water purifier includes a washing water tank for storing washing water, a spray head, a water pump, a return pipe, and an ultrasonic vibrator; the spray head is connected with the cleaning water tank through a water pipe; the water pump is used for providing spray pressure for the spray head; the water outlet end of the water return pipeline is connected with the cleaning water tank; the ultrasonic vibrator is arranged in the spray head; when the pipeline to be cleaned is cleaned, water sprayed out by the spray head enters the pipeline to be cleaned from the first end of the pipeline to be cleaned; the water inlet end of the water return pipeline is connected to the second end of the pipeline to be cleaned, and water entering the pipeline to be cleaned returns to the cleaning water tank through the water return pipeline so as to form water circulation.

In some embodiments, the pipe cleaning device further comprises a water return valve, a drainage pipe, and a drainage valve, wherein the water return valve is disposed in the water return pipe; the first end of the drainage pipeline is connected to a first position of the water return pipeline, and the first position is positioned between the water inlet end of the water return pipeline and the water return valve; the drain valve is arranged on the drain pipeline; when the pipeline to be cleaned is cleaned, the water in the pipeline to be cleaned is discharged through the water drainage pipeline when the water drainage valve is opened and closed, and the water in the pipeline to be cleaned returns to the cleaning water tank when the water drainage valve is closed and the water return valve is opened.

In some embodiments, the pipe cleaning device further comprises a filter module disposed in the return pipe and between the return valve and the first location, the filter module being configured to filter water returned to the tank via the return pipe.

In some embodiments, the pipeline cleaning device further comprises an annular support, the outer ring is fixed on the inner wall of the spray head, the ultrasonic vibrator is fixed on the inner ring of the annular support, and a plurality of hollow parts are arranged between the outer ring and the inner ring of the annular support so that cleaning water can pass through.

In some embodiments, the spray head comprises a nozzle and a metal ring, wherein the inner diameter of the nozzle gradually decreases along the water flow direction, and the nozzle is provided with a bend; and the metal ring is arranged at the bending part of the nozzle and is used for reflecting ultrasonic waves back to water in the nozzle.

In some embodiments, the pipe cleaning device further comprises a metal reflecting layer attached to the inner wall of the nozzle for reflecting the ultrasonic waves back into the cleaning water in the nozzle.

In some embodiments, the pipe cleaning device further comprises a buffer water tank and a water inlet valve, wherein the buffer water tank is communicated with the cleaning water tank through a water inlet pipe; the water inlet valve is arranged on the water inlet pipeline, and the buffer water tank is provided with a delivery port.

In some embodiments, the pipe cleaning apparatus further comprises a heating device disposed at the buffer tank and/or the cleaning tank.

In some embodiments, the pipe cleaning device further comprises a first reducer union detachably connected to the inlet pipe of the return pipe, the return pipe being connected to the second end of the pipe to be cleaned via the first reducer union.

In some embodiments, the pipe cleaning device further comprises a second reducer union disposed outside the spray head, and one end of the second reducer union is adapted to the pipe to be cleaned to fix the spray head to the pipe to be cleaned and to block the first end of the pipe to be cleaned so that the pipe cleaning device forms a closed loop.

In some embodiments, the pipeline cleaning device further comprises a detection device, which is arranged in the water return pipeline and is used for acquiring the cleanliness degree of the water in the cleaning pipeline.

The pipeline cleaning device for the water purifier provided by the embodiment of the disclosure can realize the following technical effects:

1. the ultrasonic wave emitted by the ultrasonic vibrator enters the pipeline to be cleaned along with the water sprayed by the spray head, and attachments on the inner wall of the pipeline to be cleaned can be separated through flushing of water flow and cavitation of the ultrasonic wave in the water, so that the pipeline to be cleaned is thoroughly cleaned;

2. water generated by ultrasonic cleaning enters a cleaning water tank through a water return pipeline, and the water is recycled, so that the water is saved;

3. when the water purifier is cleaned, the pipeline to be cleaned can be a single-section pipeline and a filter element cylinder, and also can be a pipeline with multiple sections connected together, the cleaning mode is various, and the cleaning mode can be flexibly selected according to the specific form of the water purifier.

The foregoing general description and the following description are exemplary and explanatory only and are not restrictive of the application.

Drawings

One or more embodiments are illustrated by way of example and not limitation in the figures of the accompanying drawings, in which like references indicate similar elements, and in which like reference numerals refer to similar elements, and in which:

FIG. 1 is a schematic view of a pipe cleaning apparatus for a water purifier according to an embodiment of the present disclosure;

FIG. 2 is a schematic view of another pipe cleaning apparatus for a water purifier according to an embodiment of the present disclosure;

FIG. 3 is a schematic view of another pipe cleaning apparatus for a water purifier according to an embodiment of the present disclosure;

FIG. 4 is a schematic view of another pipe cleaning apparatus for a water purifier according to an embodiment of the present disclosure;

FIG. 5 is a schematic view of a portion of a pipe cleaning apparatus according to an embodiment of the present disclosure;

fig. 6 is a schematic structural view of an annular bracket of a pipe cleaning apparatus according to an embodiment of the present disclosure.

Reference numerals:

100: cleaning the water tank;

200: a spray head; 210: a water pump; 220: an ultrasonic vibrator; 230: an annular bracket; 240: a nozzle; 250: a metal ring;

300: a water return pipe; 310: a water return valve; 320: a drainage pipe; 330: a drain valve; 340: a filtration module;

400: a pipe to be cleaned;

500: a buffer water tank; 510: a water inlet pipe; 520: a water inlet valve; 530: a delivery port;

610: a first reducer union; 620: and a second reducer union.

Detailed Description

So that the manner in which the features and techniques of the disclosed embodiments can be understood in more detail, a more particular description of the embodiments of the disclosure, briefly summarized below, may be had by reference to the appended drawings, which are not intended to be limiting of the embodiments of the disclosure. In the following description of the technology, for purposes of explanation, numerous details are set forth in order to provide a thorough understanding of the disclosed embodiments. However, one or more embodiments may still be practiced without these details. In other instances, well-known structures and devices may be shown simplified in order to simplify the drawing.

The terms first, second and the like in the description and in the claims of the embodiments of the disclosure and in the above-described figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate in order to describe embodiments of the present disclosure. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion.

In the embodiments of the present disclosure, the terms "upper", "lower", "inner", "middle", "outer", "front", "rear", and the like indicate an azimuth or a positional relationship based on that shown in the drawings. These terms are used primarily to better describe embodiments of the present disclosure and embodiments thereof and are not intended to limit the indicated device, element, or component to a particular orientation or to be constructed and operated in a particular orientation. Also, some of the terms described above may be used to indicate other meanings in addition to orientation or positional relationships, for example, the term "upper" may also be used to indicate some sort of attachment or connection in some cases. The specific meaning of these terms in the embodiments of the present disclosure will be understood by those of ordinary skill in the art in view of the specific circumstances.

In addition, the terms "disposed," "connected," "secured" and "affixed" are to be construed broadly. For example, "connected" may be in a fixed connection, a removable connection, or a unitary construction; may be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements, or components. The specific meaning of the above terms in the embodiments of the present disclosure may be understood by those of ordinary skill in the art according to specific circumstances.

The term "plurality" means two or more, unless otherwise indicated.

In the embodiment of the present disclosure, the character "/" indicates that the front and rear objects are an or relationship. For example, A/B represents: a or B.

The term "and/or" is an associative relationship that describes an object, meaning that there may be three relationships. For example, a and/or B, represent: a or B, or, A and B.

It should be noted that, without conflict, the embodiments of the present disclosure and features of the embodiments may be combined with each other.

Ultrasonic waves are sound waves with frequencies above 20kHz beyond the human auditory range. The propagation of ultrasonic waves depends on a medium, and when the ultrasonic waves propagate, particles in the medium are made to oscillate, and energy is transmitted through the medium in the propagation direction of the ultrasonic waves, and the waves can be divided into longitudinal waves and transverse waves. In solids, both can be transmitted, whereas in gases and liquids, only longitudinal waves can be transmitted. The ultrasound energy causes the particles to vibrate with an acceleration proportional to the square of the ultrasound frequency. Therefore, ultrasonic waves of several tens of kilohertz generate extremely large forces, and when they propagate in a liquid, acoustic cavitation occurs due to nonlinear effects. The shock waves emitted when cavitation bubbles are suddenly closed can generate thousands of atmospheric pressure around the cavitation bubbles, and the direct repeated impact on the dirt layer damages the adsorption of dirt and the surface of the cleaning piece, and on the other hand, the dirt layer is damaged to separate from the surface of the cleaning piece and disperse the dirt and the surface of the cleaning piece into the cleaning liquid. The vibration of the bubbles also scrubs the solid surface. The bubbles can also "dig into" the cracks to vibrate, causing the dirt to fall off. For greasy dirt, due to ultrasonic cavitation, the two liquids are rapidly dispersed and emulsified at the interface, and when solid particles are wrapped by greasy dirt and adhered to the surface of a cleaning piece, the oil is emulsified, and the solid particles fall off. Cavitation bubbles create a circulating flow of the liquid itself during vibration, so-called acoustic flow. The ultrasonic cavitation device can enable the surface of the vibration bubble to have high speed gradient and viscous stress, promote the damage and falling of dirt on the surface of the cleaning piece, and enable high-speed microjet generated on the surface of the solid and the liquid by ultrasonic cavitation to remove or weaken boundary dirt layers, corrode the surface of the solid, increase stirring effect, accelerate the dissolution of soluble dirt and strengthen the cleaning effect of the chemical cleaning agent.

Referring to fig. 1 to 6, the embodiment of the present disclosure provides a pipe cleaning apparatus for a water purifier, including a cleaning water tank 100, a spray head 200, a water pump 210, a return pipe 300, and an ultrasonic vibrator 220, wherein the cleaning water tank 100 is used for storing cleaning water; the spray head 200 is connected to the cleaning water tank 100 through a water pipe; a water pump 210 for providing spray pressure to the spray head 200; a return water pipe 300 having a water outlet end connected to the washing water tank 100; an ultrasonic vibrator 220 disposed in the nozzle 200; when the pipe 400 to be cleaned is cleaned, water sprayed out by the spray head 200 enters the pipe 400 to be cleaned from the first end of the pipe 400 to be cleaned; the water inlet end of the return water pipe 300 is connected to the second end of the pipe 400 to be cleaned, and water entering the pipe 400 to be cleaned is returned to the cleaning water tank 100 through the return water pipe 300 to form a water cycle.

In an embodiment of the present disclosure, a pipe cleaning device is used to clean pipes of a water purifier and a cartridge. When the water purifier needs to be cleaned, the filter element of the pipeline 400 to be cleaned is detached, and two ends of the pipeline 400 to be cleaned are opened. The first end of the pipe 400 to be cleaned is a water inlet end, and the second end of the pipe 400 to be cleaned is connected to the water return pipe 300. The water pump 210 may be provided to the head 200 or the water tank as long as it can supply water to the head 200 and provide a certain water outlet pressure to the head 200. The water pump 210 sends the water pump 210 in the spray water tank to the spray head 200, the ultrasonic vibrator 220 is started to generate ultrasonic waves, the ultrasonic waves enter the pipeline 400 to be cleaned along with the water sprayed by the spray head 200, and attachments on the inner wall of the pipeline 400 to be cleaned are separated through water flow flushing and cavitation of the ultrasonic waves. The second end of the pipe 400 to be cleaned is connected to the return pipe 300, the return pipe 300 is connected to the water tank, and water in the pipe 400 to be cleaned returns to the water tank through the return pipe 300 to form a cleaning water cycle.

In the embodiment of the present disclosure, the cleaning cavity is formed by using the space in the pipe 400 itself, so that the structure of the pipe cleaning device can be simplified and the volume of the pipe cleaning device can be reduced. When the pipeline 400 to be cleaned is cleaned, on one hand, the wall surface of the pipeline 400 to be cleaned is flushed by high-speed water flow sprayed by the spray head 200, and on the other hand, the stripping of impurities on the inner wall of the pipeline 400 to be cleaned is accelerated by virtue of cavitation of ultrasonic waves. For larger-particle impurities, the flushing and cleaning effects of the spray head 200 are obvious, and the effects of ultrasonic cleaning of organic impurities, deposited metals, residual chlorine and other impurities adhered to the wall surface of the pipeline 400 to be cleaned are obvious.

In general, when a workpiece such as a pipe is ultrasonically cleaned, a cleaning tank is usually provided, an ultrasonic vibrator 220 is provided at the bottom of the tank, and water or a cleaning agent in the cleaning tank completely submerges the pipe 400 to be cleaned and the ultrasonic vibrator 220, and the water flow is relatively stationary. The pipeline cleaning needs to be provided with a water tank, so that the pipeline cleaning device occupies a large space and is not suitable for household use. In addition, in the cleaning mode, impurities on the inner wall surface and the outer wall surface of the pipeline 400 to be cleaned are stripped only through cavitation of ultrasonic waves, the pipeline 400 to be cleaned cannot be flushed, the cleaning effect is single, and the cleaning effect is general. Moreover, since the transmission of the ultrasonic waves is more severely attenuated in the solid, the ultrasonic waves do not easily pass through the wall of the pipe 400 to be cleaned, and the cleaning effect on the inner wall of the pipe 400 to be cleaned is poor. And if the frequency of the ultrasonic wave is increased to increase the cleaning effect on the inner wall, there is a high possibility that a point of etching is caused on the outer wall of the pipe 400 to be cleaned.

The ultrasonic wave propagates in the static water flow with certain directivity and is attenuated weakly. Ultrasonic waves are attenuated to some extent in flowing water because of the presence of some bubbles in the flowing water. When the ultrasonic waves enter the pipeline 400 to be cleaned along with the water flow from the spray head 200, although the ultrasonic waves have certain attenuation, the ultrasonic waves are subjected to multiple refraction and reflection of the contact surface of liquid and gas when the flowing water flow passes through bubbles, the propagation directivity of the ultrasonic waves is weakened, and the ultrasonic waves scour all positions of the wall surface of the pipeline 400 to be cleaned along with the water flow. The ultrasonic vibrator 220 is arranged in the spray head 200, and although a part of energy is lost in the process of entering the pipeline 400 to be cleaned, the ultrasonic wave is distributed more uniformly in the pipeline 400 to be cleaned, so that the concentrated energy erosion to the wall surface of the pipeline 400 to be cleaned is avoided, the uniformity of pipeline cleaning is improved, and the effect of pipeline cleaning is improved.

The pipeline cleaning device for the water purifier provided by the embodiment of the disclosure can realize the following technical effects: the ultrasonic wave of the ultrasonic vibrator 220 enters the pipeline 400 to be cleaned along with the water sprayed by the spray head 200, and attachments on the inner wall of the pipeline 400 to be cleaned can be separated through the scouring of water flow and cavitation of the ultrasonic wave in the water, so that the pipeline 400 to be cleaned is thoroughly cleaned; water generated by ultrasonic cleaning enters the cleaning water tank 100 through the water return pipeline 300, and the water is recycled, so that the water is saved; when the water purifier is cleaned, the pipeline 400 to be cleaned can be a single-section pipeline or a filter element cylinder, or can be a pipeline with multiple sections connected together, the cleaning mode is various, and the cleaning mode can be flexibly selected according to the specific form of the water purifier.

Optionally, the water return pipe 300 includes a base, through which the water return pipe 300 can be laid on the ground or a table surface, and when the to-be-cleaned pipe 400 is connected to the water return pipe 300, the to-be-cleaned pipe 400 is vertically disposed. For example, when the water inlet end of the water return pipe 300 is opened upward and the pipe 400 to be cleaned is a single straight pipe, the second end of the pipe 400 to be cleaned is connected to the water return pipe 300, and the first end is opened upward. In this way, when the pipe 400 to be cleaned is cleaned, water flows downwards under the action of gravity, so that the water for cleaning the pipe can be prevented from splashing elsewhere. In addition, the pipe 400 to be cleaned is vertically arranged, more water can be stored in the pipe 400 to be cleaned, so that ultrasonic waves can be transmitted in the pipe 400 to be cleaned, and the pipe 400 to be cleaned can be thoroughly cleaned.

Optionally, the pipe cleaning device further includes a water return valve 310, a water drain pipe 320, and a water drain valve 330, wherein the water return valve 310 is disposed on the water return pipe 300; a drain pipe 320 having a first end connected to a first position of the return pipe 300, the first position being between a water inlet end of the return pipe 300 and the return valve 310; a drain valve 330 provided in the drain pipe 320; when the pipe 400 to be cleaned is cleaned, water in the pipe 400 to be cleaned is discharged through the drain pipe 320 when the drain valve 330 is opened and the return valve 310 is closed, and water in the pipe 400 to be cleaned is returned to the cleaning water tank 100 when the drain valve 330 is closed and the return valve 310 is opened.

When the cleaning water is circulated while the pipe 400 to be cleaned is cleaned, the water return valve 310 is opened and the water discharge valve 330 is closed, and the cleaning water is circulated. If the water is contaminated more, when it is necessary to drain the washing water in the pipe 400 to be washed, the drain valve 310 is closed, the drain valve 330 is opened, and the water in the pipe 400 to be washed and the drain pipe 300 is drained through the drain pipe 320. When the washing is completed, the water return valve 310 and the water discharge valve 330 are opened, and the water in the washing water tank 100 is discharged from the water discharge pipe 320. The arrangement form can enable the use of the pipeline cleaning device to be more convenient.

Optionally, the pipe cleaning apparatus further includes a filtering module 340 disposed in the water return pipe 300 and located between the water return valve 310 and the first position, and the filtering module is used for filtering water returned to the cleaning water tank through the water return pipe 300. The provision of the filtering means can improve the water quality returned to the washing water tank 100.

Optionally, the pipe cleaning device further includes an annular bracket 230, an outer ring is fixed on an inner wall of the nozzle 200, the ultrasonic vibrator 220 is fixed on an inner ring of the annular bracket 230, and a plurality of hollow parts are arranged between the outer ring and the inner ring of the annular bracket 230 to enable cleaning water to pass through.

The outer ring of the ring-shaped support 230 is fixed to the inner wall of the water outlet channel, and the ultrasonic vibrator 220 is fixed to the inner ring of the ring-shaped support 230. In this way, the vibration of the ultrasonic vibrator 220 is not absorbed by the inner wall of the head 200, and the generation and propagation of ultrasonic waves are ensured.

Optionally, the ring support 230 is formed from a plurality of pieces of wire mesh by folding and cutting.

The metal mesh may have a certain support for the ultrasonic vibrator 220, and the metal mesh is also advantageous for water passing. In addition, the metal mesh can also filter large-particle impurities in the water to avoid blocking the spray head 200.

Alternatively, the ultrasonic vibrator 220 has a columnar shape, and the axial direction of the ultrasonic vibrator 220 coincides with the water flow direction.

In this way, the ultrasonic wave emitted from the ultrasonic transducer 220 has a certain directivity, and specifically, propagates in the axial direction thereof. The axial direction of the ultrasonic vibrator 220 coincides with the water flow direction, which is advantageous for better entry of ultrasonic waves into the pipe 400 to be cleaned.

Alternatively, the number of the ring brackets 230 is plural, and the plurality of ring brackets 230 are uniformly arranged along the length direction of the ultrasonic vibrator 220.

In this arrangement, the ring holder 230 can support the ultrasonic vibrator 220 more well.

Optionally, the pipe cleaning device further includes a metal reflective layer attached to an inner wall of the spray head 200 for reflecting the ultrasonic waves back into the cleaning water in the spray head 200.

The propagation speed of the ultrasonic wave in the water is about 1500 m/s, which is much greater than the flow rate of the water in the spray head 200, so that the water sprayed in the spray head 200 can be kept in a continuous stationary state with the water in the pipe 400 to be cleaned for the propagation of the ultrasonic wave, and the water flow becomes a passage through which the ultrasonic wave is transmitted. The frequency of the ultrasonic wave is slightly increased under the Doppler effect of the water flow. The inner wall of the spray head 200 is stuck with a metal reflecting layer, so that the inner wall of the spray head 200 can be prevented from absorbing ultrasonic waves. The ultrasonic waves are reflected at the metal surface and the ultrasonic waves propagating to the inner wall of the spray head 200 are reflected back into the water flow, thereby propagating with the water flow into the pipe 400 to be cleaned. The ultrasonic waves reflected by the inner wall of the nozzle 200 have a reduced propagation directivity in the water flow, and become uniform. By the arrangement, the attenuation of ultrasonic waves can be reduced, and the cleaning effect of the pipeline 400 to be cleaned by the pipeline cleaning device can be improved.

Alternatively, the showerhead 200 is a metal showerhead. The ultrasonic wave is emitted at the contact surface of the water flow and the metal and is reflected back into the water flow, so that the ultrasonic wave is prevented from being absorbed by the inner wall of the spray head 200, the attenuation of the ultrasonic wave is reduced, the transmission directivity of the reflected ultrasonic wave is weakened, and the ultrasonic wave enters the ultrasonic wave along with the water flow. This can improve the cleaning effect of the pipe cleaning device on the pipe 400 to be cleaned.

Optionally, the spray head 200 includes a nozzle 240 and a metal ring 250, wherein the inner diameter of the nozzle 240 is gradually reduced along the water flow direction, and the nozzle 240 has a bend; the metal ring 250 is disposed at the bending position of the nozzle 240 and is used for reflecting the ultrasonic wave back into the water in the nozzle 240.

The angled nozzle 240 facilitates the flow of water being ejected toward the inner wall of the pipe 400 to be cleaned. The metal ring 250 is disposed at the bending position, which can reduce the absorption of the inner wall of the spray head 200 to the ultrasonic wave, and is beneficial to reflecting the ultrasonic wave into the water flow.

Optionally, the pipe washing apparatus further includes a buffer water tank 500 and a water inlet valve 520, wherein the buffer water tank 500 communicates with the washing water tank 100 through a water inlet pipe 510; the water inlet valve 520 is arranged on the water inlet pipeline 510, and the buffer water tank 500 is provided with a throwing port 530.

The buffer water tank 500 is used for supplying water for the cleaning water tank 100, when the buffer water tank 500 is connected to a municipal pipe network, the pressure of municipal water supply is blocked by the first water inlet valve 520, so that the water pressure on the water pump 210 of the spray head 200 is stable, the setting of a cleaning program of the pipeline cleaning device is facilitated, and the cleaning effect of the pipeline cleaning device can be improved.

The buffer water tank 500 is provided with a delivery port 530, through which a user can choose to deliver a fixed disinfectant, such as chlorine dioxide tablet and dibromohydantoin, or add a liquid disinfectant, such as 84 disinfectant, or put a disinfection module, such as an ozone generator and a plasma generator, according to specific conditions. For sterilization, the amount of disinfectant to be added may be determined according to the capacity of the buffer tank 500, for example, chlorine dioxide concentration is 5mg/L, dibromohydantoin concentration is 5mg/L to 10mg/L, and ozone concentration is 0.5 mg/L to 6mg/L.

Optionally, the pipe cleaning apparatus for a water purifier further comprises a conductivity sensor for acquiring the conductivity of water in the pipe 400 to be cleaned or in the return pipe 300. The conductivity sensor can measure the conductivity of water, and the cleanliness of the water can be obtained according to the conductivity. For example, when the conductivity is less than or equal to 2000. Mu.S/cm, the water is clean, the water return valve 310 is opened, the drain valve 330 is closed to circulate the cleaning water, when the conductivity is greater than 2000. Mu.S/cm, the water is considered to be turbid, and when the conductivity is greater than 2000. Mu.S/cm, the drain valve 330 is opened, the water return valve 310 is closed to drain the water generated by the cleaning pipeline. The conductivity sensor is arranged, so that the cleaning degree of the pipeline cleaning device to the cleaning water can be conveniently judged, and the pipeline cleaning device can control the cleaning process according to the cleaning degree of the cleaning water.

Optionally, the pipe cleaning apparatus for a water purifier further comprises a turbidity sensor for acquiring the turbidity of water in the pipe 400 to be cleaned or in the return pipe 300. Turbidity is the degree of turbidity of water, caused by the colloidal material of insoluble suspended matter contained in water. The degree of water cleanliness can be obtained based on the turbidity value of the washing water. For example, if the turbidity is less than or equal to 5NTU, the water is considered to be clean, the water return valve 310 is opened to close the water discharge valve 330 so that the cleaning water circulates, if the turbidity is greater than 5NTU, the water is considered to be turbid, and the water generated by the cleaning pipeline is discharged by opening the water return valve 330 to close the water return valve 310. The turbidity sensor is arranged, so that the pipeline cleaning device can conveniently judge the cleaning degree of cleaning water, and the pipeline cleaning device is beneficial to controlling the pipeline cleaning process according to the turbidity degree of the water.

Optionally, the pipe cleaning apparatus further includes a heating device provided to the buffer tank 500 and/or the cleaning tank 100.

The cavitation of ultrasonic waves in water is most pronounced at temperatures of 50-60 c, and in addition, some cleaning and disinfecting agents perform best at suitable water temperatures. A heating device is provided to allow the pipe cleaning device to adjust the temperature of the water in the buffer water tank 500 or the cleaning water tank 100 to the most appropriate cleaning temperature, and then the water in the buffer water tank 500 enters the cleaning water tank 100 to clean the pipe 400 to be cleaned. The provision of the heating means also improves the cleaning effect of the pipe cleaning device on the pipe 400 to be cleaned.

Optionally, the pipe cleaning apparatus further includes a first reducer 610 detachably connected to the water inlet pipe of the water return pipe 300, and the water return pipe 300 is connected to the second end of the pipe 400 to be cleaned through the first reducer 610.

For the to-be-cleaned pipe 400 of the water purifier, the filter cartridge and the water pipe generally have a plurality of specifications, the first reducer 610 is arranged, and the to-be-cleaned pipe 400 with different specifications can be connected to the water return pipe 300 through the reducer. The setting form is convenient for users to use.

Optionally, the pipe cleaning apparatus comprises a plurality of different gauge reducer joints.

Optionally, the pipe cleaning apparatus further includes a second reducing joint 620 disposed outside the spray head 200, and one end of the second reducing joint 620 is adapted to the pipe 400 to be cleaned to fix the spray head 200 to the pipe 400 to be cleaned and block the first end of the pipe 400 to be cleaned so that the pipe cleaning apparatus forms a closed loop.

Thus, the pipe cleaning apparatus closes both ends of the pipe 400 to be cleaned to make it a closed cleaning chamber. Not only can the cleaning water be prevented from splashing outside the pipe 400 to be cleaned when the pipe 400 to be cleaned is cleaned, but also the pipe 400 to be cleaned can be filled with water by connecting the second reducer union 620 with the pipe 400 to be cleaned. In the case of being full of water, the water sprayed by the spray head 200 agitates the water flowing in the pipeline 400 to be cleaned, and bubbles in the water in the pipeline 400 to be cleaned are fewer, so that cavitation of ultrasonic waves is facilitated. Meanwhile, in such a setting form, the spray head 200 is kept fixed, and when the pipe 400 to be cleaned is cleaned, the cleaning process can be automatically performed without the need of a user to hold the spray head 200 all the time, thereby facilitating the use of the user.

The above description and the drawings illustrate embodiments of the disclosure sufficiently to enable those skilled in the art to practice them. Other embodiments may include structural and other modifications. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in, or substituted for, those of others. The embodiments of the present disclosure are not limited to the structures that have been described above and shown in the drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims (10)

1. A pipe cleaning apparatus for a water purifier, comprising:

a washing water tank for storing washing water;

the spray head is communicated with the cleaning water tank through a water pipe;

the water pump is used for providing spray pressure for the spray head;

the water outlet end of the water return pipeline is connected with the cleaning water tank, and the water inlet end of the water return pipeline is connected with a pipeline to be cleaned;

the ultrasonic vibrator is arranged in the spray head;

when the pipeline to be cleaned is cleaned, water sprayed out by the spray head enters the pipeline to be cleaned from the first end of the pipeline to be cleaned; the water inlet end of the water return pipeline is connected to the second end of the pipeline to be cleaned, and water entering the pipeline to be cleaned returns to the cleaning water tank through the water return pipeline so as to form water circulation.

2. The pipe cleaning apparatus of claim 1, further comprising:

the water return valve is arranged on the water return pipeline;

the first end of the drainage pipeline is connected to a first position of the water return pipeline, and the first position is positioned between the water inlet end of the water return pipeline and the water return valve;

the drain valve is arranged on the drain pipeline;

the water in the pipeline to be cleaned is discharged through the drainage pipeline when the drainage valve is opened and the water return valve is closed, and the water in the pipeline to be cleaned returns to the cleaning water tank when the drainage valve is closed and the water return valve is opened.

3. The pipe cleaning apparatus of claim 2, further comprising:

the filtering module is arranged in the water return pipeline and is positioned between the water return valve and the first position, and the filtering module is used for filtering water returned to the cleaning water tank through the water return pipeline.

4. A pipe cleaning apparatus according to any one of claims 1 to 3, further comprising:

the ultrasonic vibrator is fixed on the inner ring of the annular bracket, and a plurality of meshes are arranged between the outer ring of the inner ring of the annular bracket so as to enable water flow to pass through.

5. A pipe cleaning apparatus according to any one of claims 1 to 3, wherein the spray head comprises:

the inner diameter of the nozzle is gradually reduced along the water flow direction, and the nozzle is provided with a bend;

and the metal ring is arranged at the bending part of the nozzle and is used for reflecting ultrasonic waves back to water in the nozzle.

6. A pipe cleaning apparatus according to any one of claims 1 to 3, further comprising:

the buffer water tank is communicated with the cleaning water tank through a water inlet pipeline;

a water inlet valve arranged on the water inlet pipeline,

wherein, the buffer water tank is provided with a delivery port.

7. The pipe cleaning apparatus of claim 6, further comprising:

and the heating device is arranged on the buffer water tank and/or the cleaning water tank.

8. A pipe cleaning apparatus according to any one of claims 1 to 3, further comprising:

the first reducing joint is detachably connected to the water inlet end of the water return pipeline, and the water return pipeline is connected with the second end of the pipeline to be cleaned through the first reducing joint.

9. A pipe cleaning apparatus according to any one of claims 1 to 3, further comprising:

the second reducing joint is arranged outside the spray head, and one end of the second reducing joint is adapted to the pipeline to be cleaned so as to fix the spray head to the pipeline to be cleaned and block the first end of the pipeline to be cleaned, so that the pipeline cleaning device forms a closed loop.

10. A pipe cleaning apparatus according to any one of claims 1 to 3, further comprising:

and the detection device is arranged in the water return pipeline and is used for acquiring the cleanliness degree of water in the cleaning pipeline.