阅读说明：本技术 过滤器、采用过滤器检测漏水的方法和过滤器排污方法 (Filter, method for detecting water leakage by using filter and filter pollution discharge method ) 是由 李德文 于 2020-12-23 设计创作，主要内容包括：本发明公开了一种过滤器、采用过滤器检测漏水的方法和过滤器排污方法。过滤器包括有阀体、过滤元件、第一压力传感器、第二压力传感器和控制模组,其中阀体内部中空,且阀体上设有进水口和出水口,过滤元件设置在阀体内侧,且设置在进水口与出水口之间,第一压力传感器用于检测过滤元件与进水口之间的压力,第二压力传感器用于检测过滤元件与出水口之间的压力,控制模组与第一压力传感器和第二压力传感器电连接。根据本发明的过滤器和采用过滤器检测漏水的方法,过滤器能够通过检测过滤元件两侧的压力以判断管道是否发生漏水。根据本发明的过滤器排污方法,过滤器能够在滤网上杂质过多时自动进行排污。(The invention discloses a filter, a method for detecting water leakage by adopting the filter and a filter pollution discharge method. The filter is including the valve body, filter element, first pressure sensor, second pressure sensor and control module group, wherein the inside cavity of valve body, and be equipped with water inlet and delivery port on the valve body, filter element sets up in the valve body inboardly, and sets up between water inlet and delivery port, and first pressure sensor is used for detecting the pressure between filter element and the water inlet, and second pressure sensor is used for detecting the pressure between filter element and the delivery port, and control module group is connected with first pressure sensor and second pressure sensor electricity. According to the filter and the method for detecting water leakage using the same of the present invention, the filter can determine whether water leakage occurs in a pipe by detecting pressure on both sides of the filter element. According to the filter pollution discharge method, the filter can automatically discharge the pollution when the impurities on the filter screen are excessive.)

1. A filter, comprising:

the valve body is hollow, and a water inlet and a water outlet are formed in the valve body;

the filter element is arranged on the inner side of the valve body and is arranged between the water inlet and the water outlet;

a first pressure sensor for detecting a pressure between the filter element and the water inlet;

a second pressure sensor for detecting a pressure between the filter element and the water outlet;

a control module electrically connected with the first pressure sensor and the second pressure sensor.

2. The filter of claim 1, further comprising a first valve module, wherein the first valve module is mounted on the valve body, the first valve module is used for controlling the on/off of water flow, and the first valve module is electrically connected to the control module.

3. The filter of claim 2, wherein the first valve module is disposed between the first pressure sensor and the second pressure sensor.

4. The filter of claim 2, wherein the first valve module is disposed on a side of the first pressure sensor remote from the second pressure sensor or a side of the second pressure sensor remote from the first pressure sensor.

5. The filter of claim 2, wherein the first valve module comprises a first ball valve, a first through hole is formed in the middle of the first ball valve, and a one-way valve is arranged in the first through hole.

6. The filter of claim 1, wherein the valve body is further provided with a sewage draining outlet, the sewage draining outlet is further provided with a second valve module, the filter element divides the inner side of the valve body into a first accommodating cavity and a second accommodating cavity, the first accommodating cavity is communicated with the water outlet, and the second accommodating cavity is communicated with the water inlet and the sewage draining outlet.

7. A method for detecting water leakage by using a filter is characterized by comprising the following steps:

detecting the pressure of the liquid in the filter on both sides of the filter element;

and when the time that the pressure difference exists continuously in the liquid on the two sides of the filter element exceeds a first preset time, judging that water leakage occurs in the water pipeline for the user.

8. The method for detecting water leaks using a filter according to claim 7, further comprising the steps of: and after the water leakage of the water pipeline for the user is judged, controlling a valve in a water inlet pipeline in the water pipeline for the user to be closed.

9. The method for detecting water leaks using a filter according to claim 7, further comprising the steps of: and after the water leakage of the water pipeline of the user is judged, the alarm device gives an alarm to the user.

10. A method for discharging sewage from a filter is characterized by comprising the following steps:

detecting the pressure of the liquid in the filter on both sides of the filter element;

when the liquid pressure difference between the two sides of the filter element is larger than the preset pressure value, the drain outlet in the filter is controlled to be opened to drain the filter.

Technical Field

The invention relates to the technical field of water treatment, in particular to a filter, a method for detecting water leakage by adopting the filter and a filter pollution discharge method.

Background

Along with the improvement of living standard of people, more and more people choose to install the filter additional in the water pipeline at home to the impurity that filters off aquatic obtains comparatively pure water. At present, there is a filter in the market including filter module and the detection module that leaks, above-mentioned filter is when filtering liquid through filter module, can also detect whether to take place to leak in the user water pipe with the detection module that leaks, but filter module and the detection module that leaks in the above-mentioned filter are structurally mutually independent, need set up parts that ultrasonic flowmeter etc. are used for detecting the pipeline and whether leak in the detection module that leaks, holistic structure is comparatively complicated, and manufacturing cost is higher. Besides, in order to ensure the filtering effect of the filter, the user needs to manually drain the filter periodically.

Disclosure of Invention

The present invention is directed to solving one of the technical problems of the prior art. Therefore, the invention provides a filter. The filter can judge whether the pipeline leaks water by detecting the pressure on two sides of the filter element.

The invention also provides a method for detecting water leakage by adopting the filter.

The invention also provides a filter pollution discharge method.

A filter according to an embodiment of the first aspect of the invention comprises: the valve body is hollow, and a water inlet and a water outlet are formed in the valve body; the filter element is arranged on the inner side of the valve body and is arranged between the water inlet and the water outlet; a first pressure sensor for detecting a pressure between the filter element and the water inlet; a second pressure sensor for detecting a pressure between the filter element and the water outlet; a control module electrically connected with the first pressure sensor and the second pressure sensor.

The filter according to the embodiment of the invention has at least the following technical effects: the filter can filter liquid and can also detect whether the pipeline leaks water. Specifically, the valve body inboard is provided with the filter element, and the both sides of filter element are provided with first pressure sensor and second pressure sensor respectively, and first pressure sensor and second pressure sensor continuously detect the liquid pressure of filter element both sides, and when liquid passed through the filter element, liquid pressure can reduce, has when liquid flows in the valve body promptly, and the pressure value of filter element both sides is inequality. When the liquid pressure detected by the first pressure sensor and the liquid pressure detected by the second pressure sensor are different, the control module can judge whether the water pipeline of the user leaks water or not by taking the pressure difference as a basis. The filter element of the filter in the embodiment can reduce the pressure of liquid passing through the filter element while performing the water filtering function, and only the pressure sensors are arranged on two sides of the filter element respectively, so that whether water leakage occurs in a water pipeline of a user can be judged according to the pressure detected by the two pressure sensors.

According to some embodiments of the present invention, the valve further comprises a first valve module, the first valve module is installed on the valve body, the first valve module is used for controlling the on/off of water flow, and the first valve module is electrically connected to the control module. In accordance with some embodiments of the present invention,

according to some embodiments of the invention, the first valve module is disposed between the first pressure sensor and the second pressure sensor.

According to some embodiments of the invention, the first valve module is disposed on a side of the first pressure sensor remote from the second pressure sensor or a side of the second pressure sensor remote from the first pressure sensor.

According to some embodiments of the present invention, the first valve module comprises a first ball valve, a first through hole is disposed in a middle of the first ball valve, and a check valve is disposed in the first through hole.

According to some embodiments of the invention, the valve body is further provided with a sewage draining outlet, the sewage draining outlet is further provided with a second valve module, the filter element divides the inner side of the valve body into a first accommodating cavity and a second accommodating cavity, the first accommodating cavity is communicated with the water outlet, and the second accommodating cavity is communicated with the water inlet and the sewage draining outlet.

A method for detecting water leaks using a filter according to an embodiment of the second aspect of the present invention includes the steps of: detecting the pressure of the liquid in the filter on both sides of the filter element; and when the time that the pressure difference exists continuously in the liquid on the two sides of the filter element exceeds a first preset time, judging that water leakage occurs in the water pipeline for the user.

The method for detecting water leakage by adopting the filter according to the embodiment of the invention at least has the following technical effects: the filter can judge whether the water pipeline of the user leaks water according to the time that the pressure difference is continuously generated on the two sides of the filter element. Specifically, the first pressure sensor and the second pressure sensor continuously detect the liquid pressure on both sides of the filter element, and the liquid pressure is reduced when the liquid passes through the filter element, that is, the pressure values on both sides of the filter element are unequal when the liquid flows in the valve body. When the liquid pressures detected by the first pressure sensor and the second pressure sensor are different, the control module can judge whether the water pipeline of the user leaks water or not according to the duration time of the pressure difference.

According to some embodiments of the present invention, after the water line of the user is determined to leak water, the valve in the water inlet line of the water line of the user is controlled to be closed.

According to some embodiments of the present invention, the alarm device alerts the user after it is determined that the water line of the user has leaked.

According to a third aspect of the present invention, a filter drain method includes the steps of: when the liquid pressure difference between the two sides of the filter element is larger than the preset pressure value, the drain outlet in the filter is controlled to be opened to drain the filter.

The method for detecting water leakage by adopting the filter according to the embodiment of the invention at least has the following technical effects: the filter can use the pressure difference of two sides of the filter element as the control basis for opening or not the sewage draining outlet. Specifically, the more the adnexed impurity in filter element surface, the more the pressure that reduces when liquid passes filter element is just more, when filter element both sides pressure differential was greater than the preset pressure value of control module group, control module group just can control the drain and open and carry out the blowdown to the filter.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a cross-sectional view of a first filter according to an embodiment of the invention

FIG. 2 is a cross-sectional view of a second filter according to an embodiment of the present invention;

FIG. 3 is a cross-sectional view of a third filter according to an embodiment of the present invention;

fig. 4 is a cross-sectional view of a fourth filter according to an embodiment of the present invention.

Reference numerals:

a valve body 100, a water inlet 110, a water outlet 120, a sewage outlet 130,

A filter screen 210, a filter screen framework 220,

A first pressure sensor 300,

A second pressure sensor 400,

A first ball valve 510, a first transmission rod 520, a first actuator 530,

A second ball valve 610, a second transmission rod 620, a second actuator 630,

A one-way valve 700.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, if there are first and second described only for the purpose of distinguishing technical features, it is not understood that relative importance is indicated or implied or that the number of indicated technical features or the precedence of the indicated technical features is implicitly indicated or implied.

In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.

A filter according to an embodiment of the present invention is described below with reference to fig. 1 to 4.

As shown in fig. 1 to 4, a filter according to an embodiment of the present invention includes: the valve body 100 is hollow, and a water inlet 110 and a water outlet 120 are arranged on the valve body 100; a filter element disposed inside the valve body 100 and between the water inlet 110 and the water outlet 120; a first pressure sensor 300, the first pressure sensor 300 for detecting a pressure between the filter element and the water inlet 110; a second pressure sensor 400, the second pressure sensor 400 being for detecting a pressure between the filter element and the water outlet port 120; and a control module electrically connected with the first pressure sensor 300 and the second pressure sensor 400.

For example, as shown in fig. 1 to 4, the filter includes a valve body 100, a filter element, a first pressure sensor 300, a second pressure sensor 400 and a control module, wherein the valve body 100 is a hollow housing, the valve body 100 is provided with a water inlet 110 and a water outlet 120 at two sides thereof, the filter element is disposed in the valve body 100 and separates the water inlet 110 from the water outlet 120, the first pressure sensor 300 is disposed on the valve body 100 and between the water inlet 110 and the filter element for detecting the pressure between the filter element and the water inlet 110, the second pressure sensor 400 is disposed on the valve body 100 and between the water outlet 120 and the filter element for detecting the pressure between the filter element and the water outlet 120, the control module includes a timing device for timing the time when the first pressure sensor 300 and the second pressure sensor 400 continuously generate a pressure difference, the control module is electrically connected to the first pressure sensor 300 and the second pressure sensor 400.

According to the filter provided by the embodiment of the invention, the filter can filter liquid and can also detect whether water leakage occurs in the pipeline. Specifically, a filter element is arranged inside the valve body 100, a first pressure sensor 300 and a second pressure sensor 400 are respectively arranged on two sides of the filter element, the first pressure sensor 300 and the second pressure sensor 400 continuously detect the liquid pressure on two sides of the filter element, and when liquid passes through the filter element, the liquid pressure is reduced, that is, when liquid flows in the valve body 100, the pressure values on two sides of the filter element are unequal. When the liquid pressures detected by the first pressure sensor 300 and the second pressure sensor 400 are different, the control module controls the timing device to start timing, and when the duration time of the pressure difference exceeds the first preset time of the timing device, the control module can judge that water leakage occurs in a water pipeline for a user; when the duration time of the pressure difference value does not exceed the first preset time of the timing device, the control module can judge that the water pipeline for the user does not leak, the water outlet end of the water pipeline for the user is closed, and the timing device is reset when the pressure difference on the two sides of the filtering element disappears. The first preset time is generally longer than the maximum water taking time of a user, when the user uses water normally, the user only needs to close the water outlet end of the water pipeline of the user within the first preset time, the liquid stops flowing, the pressure difference value disappears, and the filter cannot misjudge that the water pipeline of the user leaks water. The filter element of the filter in the embodiment can reduce the pressure of liquid passing through the filter element while performing the water filtering function, and only the pressure sensors are arranged on two sides of the filter element respectively, so that whether water leakage occurs in a water pipeline of a user can be judged according to the pressure detected by the two pressure sensors.

In some embodiments of the present invention, the valve further includes a first valve module, the first valve module is installed on the valve body 100, the first valve module is used for controlling the on/off of the water flow, and the first valve module is electrically connected to the control module. For example, as shown in fig. 1 to 4, the first valve module is mounted on the valve body 100, and through the above arrangement, when the control module determines that the water pipeline of the user leaks, the control module controls the first valve module to close, so as to cut off the communication between the water inlet 110 and the water outlet 120. When the filter setting was between inlet channel and water supply pipe, the filter can also play the effect of the protection of leaking, specifically, when the filter detected to take place to leak with in the user's water pipeline, the control module group just can control first valve module and close, cuts off being connected between inlet channel and the water supply pipe.

In a further embodiment of the present invention, the first valve module is disposed between the first pressure sensor 300 and the second pressure sensor 400. For example, as shown in fig. 3 and 4, a first valve module is disposed between a first pressure sensor 300 and a second pressure sensor 400. When the filter determines that the water pipeline of the user leaks, the control module controls the first valve module to close, and the communication between the water inlet 110 and the water outlet 120 is cut off.

In a further embodiment of the present invention, the first valve module is disposed on a side of the first pressure sensor 300 away from the second pressure sensor 400 or a side of the second pressure sensor 400 away from the first pressure sensor 300. For example, as shown in fig. 1 and 2, a first valve module may be disposed between the first pressure sensor 300 and the water inlet 110 or between the second pressure sensor 400 and the water outlet 120. When the filter determines that the water pipeline of the user leaks, the control module controls the first valve module to close, and the communication between the water inlet 110 and the water outlet 120 is cut off. The size of the entire filter can be reduced by disposing the first valve module between the first pressure sensor 300 and the water inlet 110 or between the second pressure sensor 400 and the water outlet 120, compared to disposing the first valve module between the first pressure sensor 300 and the second pressure sensor 400.

In a further embodiment of the present invention, the first valve module comprises a first ball valve 510, a first through hole is formed in the middle of the first ball valve 510, and a check valve 700 is disposed in the first through hole. For example, as shown in fig. 1 to 4, the first valve module includes a first ball valve 510, a first transmission rod 520 and a first actuator 530, the first ball valve 510 is disposed in the valve body 100, a first through hole is disposed in a middle portion of the first ball valve 510, the first actuator 530 is disposed outside the valve body 100 and is in transmission connection with the first ball valve 510 through the first transmission rod 520, and a check valve 700 is disposed at the first through hole, so that, under a blocking action of the check valve 700, liquid can only flow in a direction from the water inlet 110 to the water outlet 120, but cannot flow in a direction from the water outlet 120 to the water inlet 110, in the valve body 100. By providing the check valve 700 in the first valve module, the occurrence of the "water hammer" phenomenon in the valve body 100 can be prevented.

In some embodiments of the present invention, a sewage draining outlet 130 is further disposed on the valve body 100, a second valve module is further disposed on the sewage draining outlet 130, the filter element divides the inner side of the valve body into a first accommodating cavity and a second accommodating cavity, the first accommodating cavity is communicated with the water outlet 120, and the second accommodating cavity is communicated with the water inlet 110 and the sewage draining outlet 130. For example, as shown in fig. 1 to 4, a drain 130 is provided below the valve body 100, and the filter element divides the inside of the valve body 100 into a first receiving chamber and a second receiving chamber, wherein the first receiving chamber is communicated with the water outlet 120, and the second receiving chamber is communicated with the water inlet 110 and the drain 130. The second valve module is arranged on the sewage outlet 130 and is used for controlling the opening and closing of the sewage outlet 130. The second valve module comprises a second ball valve 610, a second transmission rod 620 and a second actuator 630, the second ball valve 610 is arranged on the inner side of the valve body 100 and is arranged at the sewage outlet 130, and the second actuator 630 is arranged on the outer side of the valve body 100 and is in transmission connection with the second ball valve 610 through the second transmission rod 620. Through set up drain 130 on valve body 100, and set up the second valve module on drain 130, the user just can open drain 130 when gathering up too much impurity in the filter and carry out the blowdown to the filter, has improved the convenience when filter uses.

In some embodiments of the present invention, the control module further comprises an input device and a display device. By arranging the input device and the display device in the control module, a user can set various parameters in the filter through the input device and confirm various parameters in the filter through the display device. Specifically, the user can modify the preset time of the timing device in the control module through the input device, and when the user needs a large amount of water for one time, the user can prolong the first preset time through the input device to adapt to the water demand of the user, so that the water leakage caused by misjudgment of the filter in the water using process of the user is effectively prevented, and the water using experience of the user is influenced. In addition, the user can also control the make-and-break of the first valve module and the second valve module manually through the input device.

In some embodiments of the present invention, the control module further comprises a communication device for receiving or transmitting signals. By arranging the communication device in the control module, the communication device can send information such as whether water leakage occurs in a water pipeline of a user to a mobile terminal of the user. The communication device can directly send signals to the mobile terminal of the user, and can also send the signals to the mobile terminal of the user through an external server, and the user can also remotely control the working state of the filter through the communication device. Specifically, the user sends a signal to the communication device through the mobile terminal, the communication device feeds the signal back to the control module after receiving the signal, and the control module controls the filter correspondingly according to the received signal. The communication device may be a bluetooth communication module, a WIFI communication module, a 5G communication module, a 4G communication module, a 3G communication module, a 2G communication module, an NB-IoT communication module, a LoRa communication module, an eMTC communication module, or a Sigfox communication module, but is not limited to one of these.

In some embodiments of the present invention, the control module further includes an audible and visual alarm device or a buzzer, and the audible and visual alarm device or the buzzer is used for sending the water leakage alarm information to the outside. Through setting up audible and visual alarm device or bee calling organ in the control module group, the control module group just can control audible and visual alarm device or bee calling organ and send out the police dispatch newspaper when user takes place to leak with the water pipeline to remind the user to have taken place to leak with the water pipeline.

A method for detecting water leaks using a filter according to an embodiment of the second aspect of the present invention includes the steps of: detecting the pressure of the liquid in the filter on both sides of the filter element; and when the time that the pressure difference exists continuously in the liquid on the two sides of the filter element exceeds a first preset time, judging that water leakage occurs in the water pipeline for the user.

By adopting the method for detecting water leakage by using the filter, the filter can judge whether the water pipeline of a user leaks water or not according to the time that the pressure difference between two sides of the filter element continuously occurs. Specifically, the first pressure sensor 300 is disposed between the filter element and the water inlet 110, and the second pressure sensor 400 is disposed between the filter element and the water outlet 120. When no water is used by a user or no water leakage occurs in a water pipeline of the user, the liquid in the filter is static, the pressure at each position in the valve body 100 is equal, and the numerical values detected by the first pressure sensor 300 and the second pressure sensor 400 are equal; when a user leaks water using water or a water line, the liquid may continuously pass through the filter, and the pressure detected by the first pressure sensor 300 may be different from the pressure detected by the second pressure sensor 400 because the pressure of the liquid may be reduced while passing through the filter element, i.e., a pressure difference may occur between both sides of the filter element. When the pressure difference occurs, the control module controls the timing device to time the duration of the pressure difference. When the duration time of the pressure difference exceeds the first preset time of the timing device, the control module can judge that the water pipeline for the user leaks water, further control a valve in a water inlet pipeline in the water pipeline for the user to be closed, cut off the communication between the water supply pipeline and the water inlet pipeline, and clear the timing device; when the duration time of the pressure difference does not exceed the first preset time of the timing device, the control module can judge that the water pipeline for the user does not leak, the water outlet end of the water pipeline for the user is closed, and the timing device is reset when the pressure difference on the two sides of the filtering element disappears. The user can set up timing device's first preset time through control module group to adapt to different water use occasions, prevent that the user from judging the user at the water use in-process control module group mistake and use the water pipeline to leak, and then cut off the intercommunication influence user's normal water of inlet channel and water supply pipe, for example, first preset time among the timing device is 5 minutes, if the user once water use time needs to exceed 5 minutes, alright with first preset time extension through control module group.

In some embodiments of the present invention, after it is determined that the water pipe of the user leaks, the valve in the water inlet pipe of the water pipe of the user is controlled to be closed. Through setting up as above, the control module group judges with the water pipeline of user after taking place to leak, just can control with the valve in the inlet channel in the water pipeline of user and close, cuts off the connection between inlet channel and the water supply pipe, reduces the harm that the water pipeline of user leaked and brought. When the filter setting was between inlet channel and water supply pipe, and control module group judge that the user takes place to leak with the water pipeline, control module group just can control first valve module and close, cuts off being connected between inlet channel and the water supply pipe.

In some embodiments of the present invention, the alarm device sends an alarm to the user after determining that the water pipe of the user has leaked. Through the arrangement, the control module can control the alarm device to give an alarm to the user after judging that the water pipeline of the user leaks, so as to remind the user that the water pipeline of the user leaks. The alarm device may be an audible and visual alarm device or a buzzer, but is not limited to either.

In some embodiments of the present invention, the valve in the water inlet pipe of the user water line is controlled to be closed, specifically, the valve in the water inlet pipe of the user water line is controlled to be partially closed, when the pressure difference still exists between the two sides of the filter element for a time period exceeding a second preset time period, the valve in the water inlet pipe of the user water line is controlled to be completely closed, otherwise, the valve in the water inlet pipe of the user water line is controlled to be completely opened.

Through the detection method, the filter can remind the user when the water consumption of the user exceeds the first preset time. Specifically, the timing device is also provided with a second preset time besides the first preset time, when the water using time of the user exceeds the first preset time in the timing device, the control module can control the valve part in the water inlet pipeline in the water using pipeline of the user to be closed, and the timing device continues to time the pressure difference duration. After the user closes the valve in the water inlet pipeline in the water pipeline, the user can obviously feel that the water outlet flow is reduced. At the moment, the user only needs to temporarily close the water outlet end of the water pipeline for the user within a second preset time, so that the liquid in the filter stops flowing, the pressure difference between the first pressure sensor 300 and the second pressure sensor 400 disappears, the control module can judge that no water leakage occurs in the water pipeline for the user, a valve in the water inlet pipeline in the water pipeline for the user is completely opened, the water outlet flow of the water pipeline for the user can be recovered to a normal value, and meanwhile, the timing device is reset; if the user has taken place to leak with the water pipeline, when the time that the pressure differential lasts exceeded first preset time and second preset time, the control module group just can control the valve in the inlet channel in the user's water pipeline and close completely, cuts off the intercommunication of inlet channel and water supply pipe, and the timing device zero clearing. Compared with a filter without the second preset time, the method can remind the user when the water using time of the user exceeds the first preset time, and the user can be prevented from misjudging that the water using pipeline of the user leaks and further closing a valve in a water inlet pipeline of the water using pipeline of the user to influence normal water using of the user by only temporarily closing the water outlet end of the water using pipeline of the user and resetting the timing device after being reminded, so that the convenience of the user in long-time water using is improved.

In some embodiments of the present invention, the method for detecting water leakage using a filter further comprises the steps of: and after the valve in the water inlet pipeline in the water pipeline is closed, detecting the pressure change of the filter within a third preset time, if the pressure continuously drops and/or the pressure drops to exceed a preset value, keeping the valve in the water inlet pipeline in the water pipeline closed, otherwise, controlling the valve in the water inlet pipeline in the water pipeline to open.

Through the detection method, the first pressure sensor 300 and/or the second pressure sensor 400 can perform pressure detection on the water pipeline for the user again after the valve is closed so as to judge whether water leakage occurs, and the detection accuracy is further improved. Specifically, the filter is disposed behind a valve in a water inlet pipe of the user water pipe, and the control module determines that the user water pipe leaks water and controls the valve in the water inlet pipe of the user water pipe to be closed, and then controls the first pressure sensor 300 and the second pressure sensor 400 to detect the pressure in the valve body 100 for a period of time, and determines again whether the user water pipe leaks water according to the detection result. If the first pressure sensor 300 and the second pressure sensor 400 detect that the pressure in the water pipeline for the user is kept stable within the third preset time, the control module can judge that no water leakage occurs in the water pipeline for the user actually, and the control module can control the valve in the water inlet pipeline in the water pipeline for the user to be opened; if the first pressure sensor 300 and the second pressure sensor 400 detect that the pressure in the water pipeline of the user continuously drops or the change of the pressure exceeds a preset value within a third preset time, the control module judges that water leakage occurs in the water pipeline of the user and keeps the valve closed. The method for detecting water leakage by adopting the filter comprises the steps of firstly judging whether water leakage occurs in a user water pipeline or not by detecting whether the pressure difference between two pressure sensors exists or not and the duration time of the pressure difference, then closing the valve when water leakage occurs, and detecting whether water leakage occurs in the user water pipeline or not by using the pressure in the user water pipeline within a period of time through the first pressure sensor 300 and the second pressure sensor 400, so that the accuracy of water leakage detection of the filter is effectively improved through double detection.

According to a third aspect of the present invention, a filter drain method includes the steps of: when the liquid pressure difference between the two sides of the filter element is larger than the preset pressure value, the drain outlet 130 in the filter is controlled to be opened to drain the filter.

By the filter pollution discharge method, the filter can open the pollution discharge outlet 130 to discharge the pollution when excessive impurities are accumulated on the filter element. Specifically, when the liquid flows through the filter element, the liquid pressure may be reduced, the reduced value of the pressure is related to the amount of the impurities attached to the surface of the filter screen 210, and the more the impurities attached to the surface of the filter screen 210 are, the more the pressure of the liquid passing through the filter screen 210 is reduced, the larger the pressure difference between the first pressure sensor 300 and the second pressure sensor 400 is, and when the pressure difference between the first pressure sensor 300 and the second pressure sensor 400 is greater than the preset pressure value in the control module, the control module may control the second valve module on the sewage draining port 130 to open, so as to discharge the impurities in the second accommodating cavity from the sewage draining port 130.

The filter according to the present invention is described in detail in one specific embodiment with reference to fig. 1 to 4.

As shown in fig. 1 to 4, the filter includes a valve body 100, a filter element, a first pressure sensor 300, a second pressure sensor 400, a control module, a first valve module, a second valve module and a one-way valve 700, wherein the valve body 100 is hollow, a water inlet 110 and a water outlet 120 are respectively arranged at two sides of the valve body 100, and a sewage outlet 130 is further arranged at the lower end of the valve body 100; the filter element comprises a filter screen framework 220 and a filter screen 210, the filter screen framework 220 is fixedly arranged at the inner side of the valve body 100, a plurality of second through holes are formed in the surface of the filter screen framework 220, the filter screen 210 is arranged on the surface of the filter screen framework 220 and covers the second through holes, a first accommodating cavity communicated with the water outlet 120 is formed inside the filter screen framework 220, and a second accommodating cavity communicated with the water inlet 110 and the sewage outlet 130 is formed between the outer part of the filter screen framework 220 and the inner side of the valve body 100; the first pressure sensor 300 is disposed in the second receiving chamber for detecting a liquid pressure between the filter element and the water inlet 110, and the second pressure sensor 400 is disposed in the first receiving chamber for detecting a liquid pressure between the filter element and the water outlet 120; the first valve module can be arranged between the first pressure sensor 300 and the second pressure sensor 400, or between the first pressure sensor 300 and the water inlet 110 or between the second pressure sensor 400 and the water outlet 120, the first valve module comprises a first ball valve 510, a first transmission rod 520 and a first actuator 530, the first ball valve 510 is arranged in the valve body 100, and the first actuator 530 is in transmission connection with the first ball valve 510 through the first transmission rod 520; the second valve module is arranged at the sewage draining exit 130 and used for controlling the on-off of the sewage draining exit 130, the second valve module comprises a second ball valve 610, a second actuator 630 and a second transmission rod 620, the second ball valve 610 is arranged in the valve body 100, and the second actuator 630 is in transmission connection with the second ball valve 610 through the second transmission rod 620; a first through hole is formed in the middle of the first ball valve 510, and the check valve 700 is arranged in the first through hole; the control module is electrically connected with the first pressure sensor 300, the second pressure sensor 400, the first valve module and the second valve module, and further comprises a timing device, an input device, a display device, a communication device and an acousto-optic alarm device.

According to the filter provided by the embodiment of the invention, at least some technical effects can be achieved, and the filter can play a role in detecting whether water leakage occurs in a pipeline while playing a role in filtering liquid. Specifically, a filter element is arranged inside the valve body 100, a first pressure sensor 300 and a second pressure sensor 400 are respectively arranged on two sides of the filter element, the first pressure sensor 300 and the second pressure sensor 400 continuously detect the liquid pressure on two sides of the filter element, and when liquid passes through the filter element, the liquid pressure is reduced, that is, when liquid flows in the valve body 100, the pressure values on two sides of the filter element are unequal. When the liquid pressures detected by the first pressure sensor 300 and the second pressure sensor 400 are different, the control module controls the timing device to start timing, and when the duration time of the pressure difference exceeds the first preset time of the timing device, the control module can judge that water leakage occurs in a water pipeline for a user; when the duration time of the pressure difference value does not exceed the first preset time of the timing device, the control module can judge that the water pipeline for the user does not leak, the water outlet end of the water pipeline for the user is closed, and the timing device is reset when the pressure difference on the two sides of the filtering element disappears. The first preset time is generally longer than the maximum water taking time of a user, when the user uses water normally, the user only needs to close the water outlet end of the water pipeline of the user within the first preset time, the liquid stops flowing, the pressure difference value disappears, and the filter cannot misjudge that the water pipeline of the user leaks water. When the control module judges that the water pipeline of the user leaks water, the control module controls the valve of the water inlet pipeline in the water pipeline of the user to be closed, sends out the information of water leakage to the mobile equipment of the user through the communication device, and sends out an alarm to the user through the sound-light alarm device. The first pressure sensor 300 and the second pressure sensor continuously detect the pressure at the two ends of the filter element, and when the pressure difference between the first pressure sensor 300 and the second pressure sensor 400 is greater than a preset pressure value, the control module controls the second valve module to open so as to open the sewage outlet 130 to discharge the impurities accumulated in the second accommodating cavity. Compared with the traditional filter with the water leakage detection function, the filter in the embodiment has simpler structure and lower manufacturing cost, and can control the filter to automatically discharge the sewage according to the detected pressure difference.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.