CN215276095U - Prefilter with water leakage protector - Google Patents

Abstract

The utility model relates to a leading filter of protector is leaked in area, include wherein: the water leakage protection pipe comprises a water leakage protection pipe, an actuator, a filter, a fixed pipe orifice, a reflection bracket, a first energy converter and a second energy converter. The water leakage protection pipe comprises a water inlet pipe and a water outlet pipe, wherein the water inlet pipe is connected with the water inlet pipeline and is used for conveying water in the water inlet pipeline to the interior of the filter; the water outlet pipe is connected with the water outlet pipeline and used for outputting water in the filter. The beneficial effects of the utility model reside in that, the utility model discloses can carry out electric energy and ultrasonic energy interconversion through the transducer to thereby in time detect the rivers in the protective tube that leaks and feed back fast to the circuit board in order to make corresponding control to the executor. The water in the water leakage protection pipe filters impurities in the water through the filter, and the water quality is obviously improved.

Description

Prefilter with water leakage protector

Technical Field

The utility model relates to a technical field of leading filter protection especially relates to a leading filter of protector is leaked in area.

Background

In daily life, the situation that water leakage is caused due to the fact that water pipes are leaked, broken or a water faucet is forgotten to be closed due to the fact that water pipes are old and careless, quality is uneven and the like often occurs, the health and property loss of a house can be influenced while water resources are wasted, and in modern high floors, residents are relatively dense, the water leakage is likely to cause loss to adjacent residents, and even accidents are caused to the residents. The water leakage protection device in the prior art is mainly composed of professional high-precision parts, and although the water leakage protection device can effectively protect relevant water leakage equipment, the water leakage protection device is complex in application and high in cost, so that the coverage of water leakage protection is small, the maintenance is more inconvenient, the water leakage detection protection device is very important for the life of residents, impurities contained in water cannot be effectively filtered while the water leakage protection device is used for water leakage protection, and the water leakage protection device can also cause no small trouble to the daily use of the residents.

Chinese patent publication No.: CN108105450A discloses an ultrasonic wave monitoring protector that leaks, belongs to the monitoring utensil technical field that leaks. Including the pipeline that is provided with water inlet and delivery port, the pipeline in be equipped with ultrasonic sensor and electric ball valve, be provided with flow adjustment device in ultrasonic sensor's one side that is close to the water inlet, be provided with the controller that control electric ball valve opened and closed outside the pipeline, ultrasonic sensor and electric ball valve are connected with the controller electricity respectively. Therefore, the ultrasonic water leakage monitoring protector has the following problems:

firstly, although the ultrasonic water leakage monitoring protector can detect whether water leaks from a pipeline, the detection method cannot comprehensively and accurately detect various water leakage conditions in the pipeline;

secondly, the ultrasonic water leakage monitoring protector can only protect against water leakage and cannot check pipelines to determine specific water leakage points when water leakage occurs;

thirdly, ultrasonic wave monitoring protector that leaks sets up in user's pipeline department of intaking, under the circumstances that contains impurity in the aquatic, long-time use can appear blockking up so that can't use.

Disclosure of Invention

Therefore, the utility model provides a leading filter of protector is leaked in area for overcome among the prior art to unable accurate detection and protection leak and carry out filterable problem to leaking simultaneously.

In order to achieve the above object, a prefilter with a water leakage protector is characterized by comprising:

the water leakage protection pipe comprises a water inlet pipe and a water outlet pipe, wherein the water inlet pipe is connected with the water inlet pipeline and is used for conveying water in the water inlet pipeline to the interior of the filter; the water outlet pipe is connected with the water outlet pipeline and used for outputting water in the filter.

The actuator is arranged on the water inlet pipe, and the top of the actuator is connected with the circuit board and used for receiving signals of the circuit board and correspondingly controlling the valve rod.

The pre-filter is connected with the water leakage protection pipe and is used for filtering the water output by the water inlet pipe;

and the fixed pipe orifice is arranged on the water leakage protection pipe and is used for loading screws.

The first pipe orifice is arranged on the water outlet pipe and used for loading a first transducer and fixing the first transducer at a specified position;

and the first transducer is arranged inside the first pipe orifice and connected with the circuit board, and is used for converting the ultrasonic energy into the ultrasonic energy according to the electric quantity of the circuit board and transmitting the ultrasonic energy to the reflecting support.

And the second pipe orifice is arranged on the water outlet pipe and is positioned on the same normal line with the first pipe orifice, and is used for loading a second transducer and fixing the second transducer at a specified position.

And the second transducer is arranged in the second pipe orifice and connected with the circuit board, and is used for converting the ultrasonic energy into the ultrasonic energy according to the electric quantity of the circuit board and transmitting the ultrasonic energy to the reflecting support.

And the reflecting support is horizontally arranged in the water outlet pipe, and two ends of the reflecting support are respectively provided with a reflecting plate which forms a specified angle with the water outlet direction of the water outlet pipe and is used for reflecting the emitted ultrasonic waves to a specified first energy converter and/or a specified second energy converter.

Furthermore, a fixing hole is formed in the reflection support, and a screw in the fixing pipe orifice penetrates through the fixing hole to fix the reflection support at a specified position at a specified angle.

Further, the pre-filter comprises:

the filter shell is used for protecting the internal parts of the front filter, and the top of the shell is provided with threads for connecting with the water leakage protection pipe.

And the filter element is arranged in the pre-filter and used for filtering impurities in water, and the upper end of the filter element is connected with the water outlet pipeline and used for conveying the filtered water to the water outlet pipe.

And the drainage sealing piece is arranged at the bottom of the filter element and used for plugging the bottom of the filter element and stabilizing the filter element at a specified position, and a through hole is formed in the side wall of the drainage sealing piece and used for conveying residues outside the filter element to two sides of the drainage sealing piece.

And the blowdown valve is arranged on the side wall outside the front filter shell and used for discharging impurities outside the filter element by opening or closing the blowdown valve.

Furthermore, a ball valve is arranged in the water inlet pipe, and the valve rod is connected with the ball valve and used for controlling the opening and closing of the ball valve according to the instruction of the actuator to the valve rod.

Further, the reflection support further comprises:

and the end parts of the first fixing plates are respectively connected with the top of the reflecting plate so as to fix the reflecting plate at a specified position.

And the end parts of the second fixing plates are respectively connected with the top of the reflecting plate so as to fix the reflecting plate at a specified position.

And two ends of the reflecting support are respectively provided with a reflecting plate which forms an appointed angle with the water feeding direction of the water outlet pipe and is used for reflecting the detected water flow information to the first transducer and the second transducer.

And the two ends of the reflecting support are respectively connected with the first fixing plate and the reflecting plate and used for connecting and fixing the first fixing plate and the reflecting plate.

And the first arc-shaped groove is arranged at the left side of the first fixing plate and is connected with the first transducer so as to fix the first transducer at a specified position.

And the second arc-shaped groove is arranged at the right side of the first fixing plate and is connected with the second transducer so as to fix the second transducer at a specified position.

Compared with the prior art, the beneficial effects of the utility model reside in that, the utility model discloses can carry out electric energy and ultrasonic energy interconversion through the transducer to thereby in time detect the interior rivers information of the protective tube that leaks and feed back fast the circuit board in order to make corresponding control to the executor. The water in the water leakage protection pipe filters impurities in the water through the filter, and the water quality is obviously improved. Further, the device is applicable to during the horizontally send water pipe way, has improved the device is to the water purification efficiency of horizontal pipeline and the detection efficiency that leaks.

Particularly, the actuator is arranged at the upper end of the water inlet pipe and connected with the circuit board so as to adjust the water quantity entering the water leakage protection pipe through the control valve rod.

In particular, the filter is connected with a water leakage protection pipe, so that impurities in water can be filtered and properly treated.

Particularly, the first pipe orifice and the second pipe orifice are respectively provided with the energy converter and are arranged on the water leakage protector to be connected with the water leakage protector, so that the energy converter can be effectively protected and fixed.

Especially, fixed mouth of pipe is used for fixed protector inside reflection support that leaks, can carry out safety fixing to reflection support, can provide simultaneously and stabilize the reflecting plate at reflection support both ends, provides the safety guarantee for discharge detects simultaneously.

Especially, the reflecting plate is used for transmitting the ultrasonic wave sent by the first transducer to the second transducer, the ultrasonic wave can be safely and conveniently transmitted, and meanwhile, the ultrasonic information can be well buffered.

Particularly, the reflecting support is provided with four fixing plates which are respectively used for fixing the reflecting plate at a specified position, and a stable environment can be provided for the reflecting plate to transmit ultrasonic waves.

Particularly, the first energy converter and the second energy converter are used for detecting and sending out detection information of water flow in the water leakage protection pipe and transmitting the detected water flow information to the energy converters, and data collection and transmission can be safely and conveniently carried out on the conditions of water flow.

Drawings

Fig. 1 is a front view of a front filter with a water leakage protector according to the present invention.

Fig. 2 is a front cross-sectional view of a pre-filter with a water leakage protector according to the present invention.

Fig. 3 is a top view of the pre-filter with the water leakage protector according to the present invention.

Detailed Description

In order that the objects and advantages of the invention will be more clearly understood, the invention is further described below with reference to examples; it should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and do not limit the scope of the present invention.

It should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are only for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Please refer to fig. 1 and fig. 2, which are schematic structural views of a horizontal prefilter with a water leakage protector according to the present invention, including: the water leakage protection pipe comprises a water leakage protection pipe 1, an actuator 2, a pre-filter 3, a sewage discharge valve 4, a first pipe orifice 5, a second pipe orifice 6, a fixed pipe orifice 7, a first transducer 8, a second transducer 9, a valve rod 10, a ball valve 11, a filter shell 12, a filter element 13, a drainage sealing element 14, a reflection bracket 15, a fixed hole 16, a connecting shaft 17, a first fixed plate 18, a second arc-shaped groove 19, a first arc-shaped groove 20, a reflection plate 21, a second fixed plate 22 and a circuit board (not shown in the figure). The water leakage protection pipe 1 comprises a water inlet pipe (not shown in the figure) and a water outlet pipe (not shown in the figure), wherein the water inlet pipe is connected with a water inlet pipeline and is used for conveying water in the water inlet pipeline to the interior of the pre-filter 3; the water outlet pipe is connected with a water outlet pipeline and used for outputting water in the pre-filter 3; the actuator 2 is arranged on the water leakage protection pipe 1 and on the water inlet pipe and is used for receiving signals transmitted by the circuit board and controlling the valve rod 10; the pre-filter 3 is connected with the water leakage protection pipe 1 and is used for filtering water input by the water inlet pipe; the second nozzle 7 is arranged on the water outlet pipe, is positioned on the same normal line with the first nozzle 5, and is used for loading a second transducer 9 and fixing the second transducer at a specified position; the second transducer 9 is arranged inside the second nozzle 6, is connected with the circuit board, and is used for converting ultrasonic energy according to the electric quantity of the circuit board and transmitting the ultrasonic energy to the reflecting bracket 15; the fixed pipe orifice 7 is arranged on the water leakage protection pipe 1 and is used for loading screws; the valve rod 10 is connected with the ball valve 11 and is used for controlling the opening and closing of the ball valve 11 according to the command rotation of the actuator 2; a filter housing 12 for protecting the internal parts of the pre-filter, the top of the housing being provided with threads for connection to the outer tube; the filter element 13 is arranged inside the pre-filter 3 and used for filtering impurities in water, and the upper end of the filter element 13 is connected with the water outlet pipeline and used for conveying the filtered water to the water outlet pipe; the drainage sealing element 14 is arranged at the bottom of the filter element 3 and used for plugging the bottom of the filter element 13 and stabilizing the filter element at a specified position, and a through hole is formed in the side wall of the drainage sealing element 14 and used for conveying residues outside the filter element 13 to two sides of the drainage sealing element 14; the reflecting support 15 is horizontally arranged in the water outlet pipe, two ends of the reflecting support 15 are respectively provided with a reflecting plate 21 which forms a designated angle with the water outlet direction of the water outlet pipe, the emitted ultrasonic waves are reflected to the designated first transducer 8 and/or second transducer 9, the reflecting support is provided with a fixing hole 16, and a screw in the fixing pipe orifice 7 penetrates through the fixing hole 16 so as to fix the reflecting support 15 at a designated position at a designated angle; a connecting shaft 17 connected to the first fixing plate 18 and the reflecting plate 21 at both ends of the reflecting bracket 15, respectively, for connecting and fixing the first fixing plate 18 and the reflecting plate 21; a first arc-shaped groove 20 which is arranged at the left side of the first fixing plate 18 and is connected with the first transducer 8 for fixing the first transducer at a designated position; a second arc-shaped groove 19 which is arranged at the right side of the first fixing plate 18 and connected with the second transducer 9 for fixing the second transducer 9 at a designated position; and the two ends 15 of the reflection support are respectively provided with a reflection plate 21 which forms a designated angle with the water feeding direction of the water outlet pipe and is used for reflecting the detected water flow information to the first transducer 8 and the second transducer 9. The two first fixing plates 18 are respectively arranged at the upper ends of the two sides, and the end parts of the first fixing plates 18 are respectively connected with the top of the reflecting plate 21 so as to fix the reflecting plate 21 at a specified position; and the two second fixing plates 22 are respectively arranged at the lower ends of the two sides, and the end parts of the second fixing plates 22 are respectively connected with the bottom of the reflecting plate 21 so as to fix the reflecting plate 21 at a specified position.

When the device is used, the circuit board transmits electric energy to the first transducer 8 and the second transducer 9, the first transducer 8 and the second transducer 9 convert the received electric energy into ultrasonic energy and transmit the ultrasonic energy to the reflecting plates at two ends of the reflecting support, meanwhile, water flows enter from the water inlet and enter the pre-filter 3, impurities in water are filtered through the filter element 13, the impurities enter the bottom through two sides of the drainage sealing element 14, the pollution discharge valve 4 is opened through rotation to discharge the impurities, after the remaining filtered water enters the water outlet pipe, the water flow information in the water is detected through the reflecting plate 21 on the reflecting support 15, the detected information is reflected to the first transducer 8 and the second transducer 9, the first transducer 8 and the second transducer 9 convert the electric energy into electric energy after information synchronization and transmit the electric energy to the circuit board, the circuit board can judge water leakage with a threshold value according to the transmitted information, when the judgment value exceeds the threshold value, the circuit board controls the actuator 2 to push the valve rod 10 to control the ball valve 11 to block the water inlet pipeline, and the water leakage protection work is completed.

Referring to fig. 1, the water leakage protection pipe 1 of the present invention is a horizontal pipe structure, in which a water inlet pipe is connected to a water inlet pipeline for conveying water in the water inlet pipeline to the interior of the filter; the water outlet pipe is connected with the water outlet pipeline and used for outputting water in the filter. When the equipment is operated, the water leakage protection pipe 1 can convey water in the pipeline to the water outlet. It can be understood that the water leakage protection tube 1 may be made of stainless steel or other materials as long as it can deliver water to the water outlet.

Referring to fig. 1 and 2, the actuator 2 of the present invention is disposed on the water leakage protection pipe 1 and on the water inlet pipe, and is used for receiving the control of the circuit board and controlling the valve rod 10. The inside of the water inlet pipe is provided with a ball valve 11, and the valve rod 10 is connected with the ball valve 11 and is used for rotating according to the instruction of the actuator 2 so as to control the opening and closing of the ball valve.

When the equipment is operated, when the actuator 2 receives a signal of the second transducer 9, the ball valve 11 is touched downwards by the control valve rod 10 to completely block the water inlet channel in the water leakage protection pipe 1, so that the function of protecting water leakage is achieved. It can be understood that the actuator 2 may not have the valve rod 10, as long as the actuator 2 can control the globe valve and block the water inlet pipe in time when receiving the signal from the second transducer 9.

With continuing reference to fig. 1 and 2, the pre-filter 3 of the present invention includes:

a filter housing 12 for protecting the internal parts of the pre-filter, the housing being provided with a screw thread at its top for connection to the outer tube.

And the filter element 13 is arranged inside the pre-filter 3 and used for filtering impurities in water, and the upper end of the filter element 13 is connected with the lower end of the inner pipe and used for conveying the filtered water to the water outlet pipe through the inner pipe.

A drain seal member 14 provided at the bottom of the filter element 13 for discharging the residue in the pre-filter 3; part of the outer wall of the drainage sealing member 14 is connected with the inner wall of the bottom of the pre-filter 3 to fix the filter element 13 at a specified position, and the side wall of the drainage sealing member 14, which is positioned inside the filter shell 12, is provided with through holes for conveying residues outside the filter element 13 to two sides of the drainage sealing member 14;

it is understood that the filter housing 12 may be made of stainless steel or alloy, so long as it protects the internal components of the filter 3.

And a blow-down valve 4 disposed on and connected to the pre-filter 3 to open and discharge the pre-filter 3 according to the amount of impurities at the bottom of the pre-filter 3. When the equipment runs, when the amount of the impurities stored at the bottom of the front filter 3 reaches a certain amount, a user can rotate the sewage valve 4 to open and discharge the impurities in the front filter 3, and after the impurities are discharged, the user can reversely rotate and close the sewage valve; the blowoff valve 4 can discharge and treat impurities in the filter 3 in time, and can effectively avoid the adverse effect on the filter 3 caused by the blockage of the impurities. It will be understood that the waste valve 4, while being automatically opened, can also be manually opened and closed, as long as it is satisfactory for the correct discharge of the impurities in the pre-filter 3.

When the filter 3 equipment is operated, the outer pipe is connected with water from the water inlet pipe, the filter element 13 filters the water layer by layer, the filtered water is upwards arranged on the left side wall of the inner pipe in the pre-filter 3 and enters the water leakage protection pipe 1 to be discharged, the filtered impurities enter the bottom of the pre-filter 3 through the water drainage sealing element 14, the blow-down valve 4 is opened according to the impurity amount at the bottom of the pre-filter 3 to be discharged in time, and the closed state is recovered after the discharge is finished.

Referring to fig. 1, the first pipe orifice 5 and the second pipe orifice 6 of the present invention are respectively disposed at the upper end of the water leakage protection pipe 1 and connected thereto for respectively loading the energy converter and fixing the energy converter at a designated position.

Referring to fig. 1, the fixing pipe opening 7 of the present invention is disposed at the upper end of the water leakage protection pipe 1 and connected thereto for loading screws and penetrating through the fixing holes 16 to fix the reflection bracket 15 inside the water leakage protection pipe 1 at a predetermined position.

Referring to fig. 1, the reflecting support 15 of the present invention is horizontally disposed in the water outlet pipe, and two ends of the reflecting support 15 are respectively provided with a reflecting plate 21 forming an appointed angle with the water supply direction of the water outlet pipe for reflecting the ultrasonic wave emitted from the transducer to an appointed direction.

Specifically, the reflection bracket 15 includes:

two first fixing plates 18, each first fixing plate 18 is respectively arranged at the upper ends of two sides, and the end part of each first fixing plate 18 is respectively connected with the top of the reflecting plate 21 so as to fix the reflecting plate at a designated position;

two second fixing plates 22, wherein each second fixing plate 22 is respectively arranged at the upper ends of two sides, and the end part of each second fixing plate 18 is respectively connected with the bottom of the reflecting plate 21 so as to fix the reflecting plate at a designated position;

two reflecting plates 21, which are respectively arranged at two ends of the reflecting bracket and form a specified angle with the water feeding direction of the water outlet pipe, are used for reflecting the detected water flow information to the first transducer 8 and the second transducer 9;

a connecting shaft 17 connected to the first fixing plate 18 and the reflecting plate 21 at both ends of the reflecting bracket, respectively, for connecting and fixing the first fixing plate 18 and the reflecting plate 21;

a first arc-shaped groove 20 disposed at the left side of the first fixing plate 18 and connected to the first transducer 8 for fixing the first transducer 8 at a designated position;

and a second arc-shaped groove 19 provided on the right side of the first fixing plate 18 and connected to the second transducer 9 for fixing the second transducer 9 at a designated position.

Referring to fig. 1, the first transducer 8 of the present invention is disposed inside the first pipe opening 5, and is used for detecting the water flow information of the water in the water leakage protection pipe 1 and emitting ultrasonic waves to the reflection plate 21. After the device is operated, the first transducer 8 receives the electrical energy from the circuit board and converts the received electrical energy into ultrasonic waves to be transmitted to the reflector 21, it is understood that the first transducer 8 may have a square or other shape as long as it is capable of correctly converting the electrical energy from the circuit board and transmitting the ultrasonic waves to the reflector 21.

Referring to fig. 1 and 2, the second transducer 9 of the present invention is disposed inside the second pipe opening 6, and the second transducer 9 converts the received electric energy into ultrasonic energy and transmits the ultrasonic energy to the reflective plates 21 at the two ends of the reflective bracket 15. When the device is in operation, the second transducer 9 receives electrical energy from the circuit board and converts the received electrical energy into ultrasonic waves which are transmitted to the reflector plate 21. It will be appreciated that the second transducer 8 may be square or otherwise shaped in appearance, provided that it is able to properly receive the baffle 11 and transmit it to the actuator 21.

Specifically, the water flow information in water is detected through the reflecting plate on the reflecting support 15, the detected information is reflected to the first transducer 8 and the second transducer 9, the first transducer 8 and the second transducer 9 can perform information synchronization and then convert the information into electric energy and transmit the electric energy to the circuit board, the circuit board can perform judgment with a water leakage threshold value according to the transmitted information, and when the judgment value exceeds the threshold value, the circuit board controls the actuator 2 to push the valve rod 10 to control the ball valve 11 to block a water inlet pipeline, so that the water leakage protection work is completed.

So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the invention, and the technical scheme after the changes or substitutions can fall into the protection scope of the invention.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention; various modifications and alterations to this invention will become apparent to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (5)

1. A prefilter with a water leakage protector, comprising:

the water leakage protection pipe comprises a water inlet pipe and a water outlet pipe, wherein the water inlet pipe is connected with the water inlet pipeline and is used for conveying water in the water inlet pipeline to the interior of the filter; the water outlet pipe is connected with the water outlet pipeline and used for outputting water in the filter;

the actuator is arranged on the water inlet pipe, and the top of the actuator is connected with the circuit board and used for receiving signals of the circuit board and correspondingly controlling the valve rod;

the pre-filter is connected with the water leakage protection pipe and is used for filtering the water output by the water inlet pipe;

a fixed pipe orifice arranged on the water leakage protection pipe and used for loading screws;

the first pipe orifice is arranged on the water outlet pipe and used for loading a first transducer and fixing the first transducer at a specified position;

the first energy converter is arranged in the first pipe orifice, connected with the circuit board and used for converting the electric quantity of the circuit board into ultrasonic energy and transmitting the ultrasonic energy to the reflecting support;

the second pipe orifice is arranged on the water outlet pipe, is positioned on the same normal line with the first pipe orifice and is used for loading a second transducer and fixing the second transducer at a specified position;

the second transducer is arranged in the second pipe orifice, connected with the circuit board and used for converting the ultrasonic energy into the ultrasonic energy according to the electric quantity of the circuit board and transmitting the ultrasonic energy to the reflecting support;

and the reflecting support is horizontally arranged in the water outlet pipe, and two ends of the reflecting support are respectively provided with a reflecting plate which forms a specified angle with the water outlet direction of the water outlet pipe and is used for reflecting the emitted ultrasonic waves to a specified first energy converter and/or a specified second energy converter.

2. The prefilter of a water leakage protector according to claim 1 wherein said reflector bracket has fixing holes, and screws in said fixing holes are inserted through said fixing holes to fix said reflector bracket at a predetermined angle at a predetermined position.

3. The prefilter with a water leakage protector according to claim 1, wherein said prefilter comprises:

the filter shell is used for protecting the internal parts of the pre-filter, and the top of the shell is provided with threads for connecting with the water leakage protection pipe;

the filter element is arranged in the pre-filter and used for filtering impurities in water, and the upper end of the filter element is connected with the water outlet pipeline and used for conveying the filtered water to the water outlet pipe;

the drainage sealing piece is arranged at the bottom of the filter element and used for plugging the bottom of the filter element and stabilizing the filter element at a specified position, and a through hole is formed in the side wall of the drainage sealing piece and used for conveying residues outside the filter element to two sides of the drainage sealing piece;

and the blowdown valve is arranged on the side wall outside the front filter shell and used for discharging impurities outside the filter element by opening or closing the blowdown valve.

4. The prefilter of a water leakage protector according to claim 1 wherein a ball valve is located inside said inlet pipe, said valve stem being connected to said ball valve for rotation in response to a command from said actuator to said valve stem to control the opening and closing of said ball valve.

5. The prefilter with a water leakage protector of claim 2 wherein said reflective support frame further comprises:

the two first fixing plates are respectively arranged at the upper ends of the two sides, and the end parts of the first fixing plates are respectively connected with the top of the reflecting plate and used for fixing the reflecting plate at a specified position;

the two second fixing plates are respectively arranged at the upper ends of the two sides, and the end parts of the second fixing plates are respectively connected with the top of the reflecting plate and used for fixing the reflecting plate at a specified position;

the two ends of the reflecting support are respectively provided with a reflecting plate which forms a designated angle with the water feeding direction of the water outlet pipe and is used for reflecting the detected water flow information to the first transducer and the second transducer;

the two ends of the reflecting bracket are respectively connected with the first fixing plate and the reflecting plate and used for connecting and fixing the first fixing plate and the reflecting plate;

the first arc-shaped groove is arranged on the left side of the first fixing plate and is connected with the first transducer so as to fix the first transducer at a specified position;

and the second arc-shaped groove is arranged at the right side of the first fixing plate and is connected with the second transducer so as to fix the second transducer at a specified position.

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