Leakage protector

Abstract

The present application discloses a water leakage protector, comprising: a body, a valve body, a shell, a rotating part, a detection part, a sensing part, and a control module. The body has a water inlet and a water outlet; the valve body is arranged inside the body; the shell is arranged inside the body, and the shell is formed with a water inlet and a water outlet; the rotating part is arranged inside the shell; the upper end of the rotating part is provided with a push block; the detection part is rotatably arranged inside the shell, and the lower end of the detection part is provided with a convex block; the sensing part is used to detect the rotation state of the detection part; and the control module is electrically connected to the sensing part and the valve body respectively. By staggering the water inlet and the water outlet, the difference in area covered by the rotating body between the water inlet and the water outlet is caused, resulting in different pressures between the side of the rotating body close to the water inlet and the side close to the water outlet, and the rotating body is driven by the pressure difference. As long as there is water flow, a pressure difference will be formed on both sides of the rotating body, thereby driving the rotating body to rotate. The water leakage protector of the present application is more accurate in detecting the flow state of water.

Description

Technical Field

[0001] The present application relates to the technical field of water treatment, and particularly relates to a water leakage protector. Background Art

[0002] A water leakage protector can automatically close the water supply valve when a water leakage occurs in the water supply system. Specifically, a household water leakage protector is arranged between the municipal water supply pipeline and the household water supply pipeline. When a water leakage occurs in the household water supply pipeline and the water leakage protector senses abnormal water supply, it can cut off the connection between the municipal water supply pipeline and the household water supply pipeline.

[0003] In the related art, an impeller and a sensor are arranged in the water leakage protector. When water flows through the water leakage protector, it can drive the impeller to rotate. A magnet is arranged on the impeller, and the magnet rotates along with the impeller when the impeller rotates. The sensor senses the change in the magnetic field generated by the magnet, so as to obtain the water flow state. If the continuous water flow time exceeds the preset time, it is determined that there is a water leakage situation. It should be understood that the rotation of the impeller depends on the impact force of the water flow. In the case of low water flow, the impeller may rotate slowly or not rotate, resulting in the possibility that the sensor may not be able to sense the abnormal water flow when the water leakage point is small. Summary of the Invention

[0004] The present application aims to at least solve one of the technical problems existing in the prior art. For this purpose, the present application provides a water leakage protector.

[0005] The water leakage protector according to the embodiment of the present application includes: a body, a valve body, a housing, a rotating part, a detecting part, a sensing part, and a control module.

[0006] The body has a water inlet end and a water outlet end, and a flow channel allowing water to pass through is formed inside the body. The water inlet end, the flow channel, and the water outlet end are connected and communicated.

[0007] The valve body is arranged inside the body, and the valve body is configured to control the connection state between the water inlet end and the water outlet end.

[0008] The housing is arranged inside the body. The housing is formed with a water inlet and a water outlet. The water inlet end, the water inlet, the water outlet, and the water outlet end are connected and communicated in sequence. The water inlet and the water outlet are arranged staggeredly.

[0009] The rotating part is arranged inside the housing, and the rotating part can make a circular motion inside the housing under the drive of water flow. The projection of the rotating part in the height direction overlaps at least partially with the water inlet and the water outlet respectively, so that the rotating part can cover the water inlet and / or the water outlet. A push block is arranged at the upper end of the rotating part.

[0010] The detection part is rotatably arranged in the housing, the lower end of the detection part is arranged in the rotating part, the lower end of the detection part is provided with a convex block, and the convex block is arranged on the moving path of the push block;

[0011] The sensing part is used to detect the rotation state of the detection part;

[0012] The control module is electrically connected to the sensing part and the valve body, respectively. The control module can receive a signal of a rotation state of the detection part detected by the sensing part, and control a connection state of the valve body according to the signal.

[0013] The water leakage protector according to the embodiment of the present application has at least the following beneficial effects: by staggering the water inlet and the water outlet and making the rotating body cover the area difference between the water inlet and the water outlet, the pressure between the rotating body close to the water inlet and the water outlet is different, and the rotating body is pushed by the pressure difference. Therefore, as long as there is water flow, a pressure difference will be formed on both sides of the rotating body, thereby pushing the rotating body to rotate. The water leakage protector of the present application can detect the flow state of water more accurately, so that even if the leakage point of the household water supply pipeline is small, the sensing part can also sense it.

[0014] According to some embodiments of the present application, a limiting portion is further included, wherein the limiting portion connects the inner wall of the shell and the rotating portion, and the limiting portion is used to limit the movement path of the rotating portion.

[0015] According to some embodiments of the present application, the limiting portion includes a limiting plate, the rotating portion forms a limiting groove, one end of the limiting plate is connected to the side wall of the shell, and the limiting plate can be movably inserted in the limiting groove, and when the rotating portion rotates, the other end of the limiting plate can slide along the inner wall of the limiting groove.

[0016] According to some embodiments of the present application, the water inlet and the water outlet are located on both sides of the limiting plate.

[0017] According to some embodiments of the present application, the width of the water inlet and the width of the water outlet gradually decrease in a direction away from the limiting plate.

[0018] According to some embodiments of the present application, the limiting part includes a limiting block, the limiting block is arranged on the bottom wall of the housing, a first annular groove is formed on the limiting block, the rotating part includes a rotating shell, a rotating shaft and a partition plate; the partition plate is arranged inside the rotating shell, the partition plate divides the inside of the rotating shell into an upper part and a lower part, the limiting block is located inside the lower part, the lower end of the detecting part and the convex block are located inside the upper part; the rotating shaft penetrates through the partition plate, the lower end of the rotating shaft is inserted into the first annular groove, and the lower end of the rotating shaft can move in the first annular groove, and the pushing block is arranged on the part of the rotating shaft located in the upper part.

[0019] According to some embodiments of the present application, a through hole is formed on the partition plate.

[0020] According to some embodiments of the present application, the detecting part forms a second annular groove, the upper end of the rotating shaft is inserted into the second annular groove, and the upper end of the rotating shaft can move in the second annular groove.

[0021] According to some embodiments of the present application, the housing is cylindrical, the rotating shaft is arranged at the central position of the partition plate, the convex block is arranged on the side of the central position of the detecting part, when the rotating part makes a circular motion, the pushing block makes a circular motion around the central position of the detecting part, so that the pushing block continuously pushes the convex block.

[0022] According to some embodiments of the present application, the upper end of the detecting part penetrates through the housing, a magnet is arranged at the upper end of the detecting part, a concave part is formed at the position of the body corresponding to the detecting part, and the sensing part is arranged inside the concave part.

[0023] Additional aspects and advantages of the present application will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present application. Description of the Drawings

[0024] The following further describes the present application with reference to the drawings and embodiments, where:

[0025] Figure 1 is a cross-sectional view of the water leakage protector according to the embodiment of the present application;

[0026] Figure 2 is a schematic connection structure diagram of the housing, the rotating part and the detecting part according to the embodiment of the present application;

[0027] Figure 3 is Figure 2 a perspective view of another angle of

[0028] Figure 4 is Figure 2 an exploded view of

[0029] Figure 5 For Figure 2 a schematic structural view of hiding the upper end of the housing;

[0030] Figure 6 For Figure 5 a perspective view of the detection part in the middle.

[0031] Reference numerals:

[0032] the body 100, the water inlet end 110, the water outlet end 120, the recess 130;

[0033] the housing 200, the water inlet 210, the water outlet 220;

[0034] the rotating part 300; the rotating housing 310, the rotating shaft 320, the partition 330, the through hole 331; the push block 340; the limiting groove 350;

[0035] the detection part 400, the convex block 410, the second annular groove 420, the magnet 430;

[0036] the limiting part 500, the limiting plate 510; the limiting block 520, the first annular groove 521;

[0037] the filtering part 600. Detailed implementation manners

[0038] The embodiments of the present application will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present application and should not be construed as a limitation to the present application.

[0039] In the description of the present application, it should be understood that for the orientation description, such as the upper, lower, front, rear, left, right, etc., the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0040] In the description of the present application, the meaning of several is more than one, the meaning of multiple is more than two, greater than, less than, exceeding, etc. are understood as not including the number itself, and above, below, within, etc. are understood as including the number itself. If the first and second are described only for the purpose of distinguishing technical features, they should not be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0041] In the description of this application, unless otherwise clearly defined, terms such as "setting", "installation", "connection", etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in this application in combination with the specific content of the technical solution.

[0042] In the description of this application, the description with reference to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of this application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0043] Referring to Figures 1 to 6 , the water leakage protector according to the embodiment of this application includes: a main body 100, a valve body, a housing 200, a rotating part 300, a detecting part 400, a sensing part, and a control module.

[0044] Referring to Figure 1 , the main body 100 has a water inlet end 110 and a water outlet end 120, and a flow channel allowing water flow to pass through is formed inside the main body 100, and the water inlet end 110, the flow channel, and the water outlet end 120 are connected and communicated; it can be understood that the water inlet end 110 of the main body 100 can be connected to the municipal water supply pipeline or the household water supply pipeline, and the water outlet end 120 is used to connect to the household water supply pipeline. When using water in the house, the water flow will enter the flow channel from the water inlet end 110 and then flow out from the water outlet end 120.

[0045] The valve body is arranged inside the main body 100, and the valve body is configured to control the connection state of the water inlet end 110 and the water outlet end 120;

[0046] Referring to Figure 1 , Figure 2 , Figure 3 , the housing 200 is arranged inside the main body 100, the housing 200 is formed with a water inlet 210 and a water outlet 220, the water inlet end 110, the water inlet 210, the water outlet 220, and the water outlet end 120 are connected in sequence, and the water inlet 210 and the water outlet 220 are arranged staggeredly;

[0047] Referring to Figure 4 , Figure 5 , the rotating part 300 is arranged inside the housing 200, and the rotating part 300 can make a circular motion inside the housing 200 driven by the water flow. The projection of the rotating part 300 in the height direction overlaps at least partially with the water inlet 210 and the water outlet 220 respectively, so that the rotating part 300 can cover the water inlet 210 and / or the water outlet 220; a push block 340 is arranged at the upper end of the rotating part 300;

[0048] Reference Figure 4 , Figure 5 , the detection unit 400 is rotatably disposed in the housing 200, and the lower end of the detection unit 400 is disposed in the rotating unit 300, referring to Figure 5 , Figure 6 , a protrusion 410 is provided at the lower end of the detection part 400, and the protrusion 410 is provided on the moving path of the push block 340;

[0049] The sensing part is used to detect the rotation state of the detection part 400;

[0050] The control module is electrically connected to the sensing part and the valve body, and can receive a signal of the rotation state of the detection part 400 detected by the sensing part, and control the connection state of the valve body according to the signal. For example, the control module can be a PCB board.

[0051] It can be understood that the operation process of the water leakage protector of the present application is as follows: when water is used indoors, the water flows through the interior of the main body 100 and enters from the water inlet 210 of the shell 200. After the water flows into the shell 200, since the water inlet 210 and the water outlet 220 are staggered, and the rotating part 300 can cover the water inlet 210 and / or the water outlet 220, the areas of the water inlet 210 and the water outlet 220 covered by the rotating part 300 are different. It should be understood that the flow rate of the water inlet 210 and the water outlet 220 is balanced, and thus the water flow speeds of the water inlet 210 and the water outlet 220 are different, resulting in different pressures on both sides of the rotating body close to the water inlet 210 and the water outlet 220, and the pressure difference causes the rotating body to continuously perform circular motion in the shell 200. Specifically, in order to ensure that the water flow can form a stable pressure difference, the rotating part 300 moves in a circular motion along the inner wall of the housing 200 , that is, when the rotating part 300 moves, the inner wall of the rotating part 300 remains in contact with the inner wall of the housing 200 .

[0052] For example, when the rotating part 300 covers a large area of the water inlet 210, the water outlet 220 will be exposed more. Therefore, the water flow velocity at the water inlet 210 is slower, and the water flow velocity at the water outlet 220 is faster. The pressure on the side of the rotating part 300 close to the water inlet 210 is larger, and the pressure on the side of the rotating part 300 close to the water outlet 220 is smaller. Therefore, the rotating part 300 is driven to rotate by the pressure difference, so that the rotating part 300 tends to cover less area of the water inlet 210 and more area of the water outlet 220. Similarly, when the rotating part 300 covers a large area of the water outlet 220, the water inlet 210 will be exposed more, so the water flow velocity at the water outlet 220 is slower, and the water flow velocity at the water inlet 210 is faster. The pressure on the side of the rotating part 300 close to the water outlet 220 is higher, and the pressure on the side of the rotating part 300 close to the water inlet 210 is lower. Therefore, the rotating part 300 is driven to rotate by the pressure difference, so that the rotating part 300 tends to cover less area of the water outlet 220 and more area of the water inlet 210. For another example, when the rotating part 300 covers the same area of the water inlet 210 and the water outlet 220, the rotating part 300 can continue to rotate by relying on the rotational inertia of the rotating part 300.

[0053] When the rotating body rotates, it drives the push block 340 to move. Since the protrusion 410 is set on the moving path of the push block 340, the push block 340 can push the protrusion 410, and the protrusion 410 drives the detection part 400 to rotate. Therefore, the sensing part can sense the rotation of the detection part 400 and send the rotation state of the detection part 400 to the control module. The control module determines the flow state of water according to the rotation state of the detection part 400 to determine whether the household water supply pipeline is leaking. If it is determined that there is an abnormal water flow, it is determined to be a leak. The control module controls the valve body to close, thereby cutting off the connection between the water inlet end 110 and the water outlet end 120 to achieve the effect of leakage protection.

[0054] The water leakage protector according to the embodiment of the present application has at least the following beneficial effects: by staggering the water inlet 210 and the water outlet 220, and making the rotating body cover the area difference between the water inlet 210 and the water outlet 220, the pressure between the rotating body close to the water inlet 210 and the water outlet 220 is different, and the rotating body is driven by the pressure difference. Therefore, as long as there is water flow, a pressure difference will be formed on both sides of the rotating body, thereby driving the rotating body to rotate. The water leakage protector of the present application can detect the flow state of water more accurately, so that even if the leakage point of the household water supply pipeline is small, the sensing part can also sense it.

[0055] Reference Figure 4 It should be noted that, in order to make the rotating part 300 perform circular motion in the shell 200, the water leakage protector of the present application also includes a limiting part 500, which connects the inner wall of the shell 200 and the rotating part 300, and the limiting part 500 is used to limit the movement path of the rotating part 300.

[0056] Referring to Figure 4 and Figure 5 , in this embodiment, the limiting portion 500 includes a limiting plate 510. The rotating portion 300 is formed with a limiting groove 350. One end of the limiting plate 510 is connected to the side wall of the housing 200, and the limiting plate 510 is movably inserted into the limiting groove 350. When the rotating portion 300 rotates, the other end of the limiting plate 510 can slide along the inner wall of the limiting groove 350.

[0057] It can be understood that the limiting plate 510 is fixedly connected to the side wall of the housing 200. When the rotating portion 300 is pushed by water flow, the end of the limiting plate 510 located in the limiting groove 350 slides along the inner wall of the limiting groove 350.

[0058] Referring to Figure 4 , regarding the positional relationship among the water inlet 210, the water outlet 220 and the limiting plate 510, the water inlet 210 and the water outlet 220 are located on both sides of the limiting plate 510.

[0059] It can be understood that the water inlet 210 and the water outlet 220 are located on both sides of the limiting plate 510, so that the water inlet 210 and the water outlet 220 are arranged close to each other, avoiding the opposite arrangement of the water inlet 210 and the water outlet 220, and reducing the situation where the rotating portion 300 covers the same area of the water inlet 210 and the water outlet 220. In addition, since the water inlet 210 and the water outlet 220 are arranged close to each other, the limiting plate 510 can reduce the direct flow of water from the water inlet 210 to the water outlet 220, enabling the water flow to flow around a longer distance to the water outlet 220, ensuring the formation of a pressure difference.

[0060] More specifically, the water inlet 210 is arranged at the lower end of the housing 200, and the water outlet 220 is arranged at the upper end of the housing 200.

[0061] Referring to Figure 2 and Figure 3 and Figure 4 , regarding the shapes of the water inlet 210 and the water outlet 220, the widths of the water inlet 210 and the water outlet 220 gradually decrease in the direction away from the limiting plate 510.

[0062] It can be understood that by setting the widths of the water inlet 210 and the water outlet 220 to gradually decrease in the direction away from the limiting plate 510, a large pressure difference is maintained on both sides of the rotating portion 300 during the rotation of the rotating portion 300. For example, when the rotating portion 300 covers a large area of the water inlet 210, that is, a small part of the water inlet 210 is exposed and a large part of the water outlet 220 is exposed; during the rotation of the rotating portion 300, the exposed area of the water inlet 210 increases rapidly, and the exposed area of the water outlet 220 decreases rapidly, maintaining a large pressure difference.

[0063] Reference Figure 4 , in this embodiment, the limiting portion 500 includes a limiting block 520. The limiting block 520 is disposed on the bottom wall of the housing 200. A first annular groove 521 is formed on the limiting block 520. The rotating portion 300 includes a rotating housing 310, a rotating shaft 320, and a partition plate 330. The partition plate 330 is disposed inside the rotating housing 310. The partition plate 330 divides the interior of the rotating housing 310 into an upper part and a lower part. The limiting block 520 is located inside the lower part. The lower end of the detecting portion 400 and the convex block 410 are located inside the upper part. The rotating shaft 320 passes through the partition plate 330. The lower end of the rotating shaft 320 is inserted into the first annular groove 521, and the lower end of the rotating shaft 320 can move within the first annular groove 521. The pushing block 340 is disposed on the portion of the rotating shaft 320 located in the upper part.

[0064] It can be understood that when water flows through the housing 200, a pressure difference will be formed on the outer side of the rotating housing 310, causing the rotating housing 310 to perform a circular motion. Specifically, when the rotating housing 310 performs a circular motion, the rotating shaft 320 can slide within the first annular groove 521 and drive the pushing block 340 to move. It should be understood that the movement path of the rotating shaft 320 is restricted by the first annular groove 521, thereby restricting the movement paths of the rotating housing 310 and the pushing block 340.

[0065] It can be understood that by disposing the limiting block 520 inside the lower part, the movement range of the rotating housing 310 is further restricted.

[0066] It can be understood that by disposing the pushing block 340 and the convex block 410 in the upper part of the rotating housing 310, the upper part can reduce the influence of water flow on the movement of the pushing block 340 and the convex block 410, ensuring that the pushing block 340 can push the convex block 410 when water flows through the housing 200 and avoiding the influence of water flow on the movement of the pushing block 340.

[0067] Specifically, a limiting groove 350 is formed on the partition plate 330, and the limiting plate 510 can pass through the rotating housing 310 and enter the limiting groove 350.

[0068] Reference Figure 4 , in order to prevent the reduction of the water flow rate when the rotating portion 300 covers the water inlet 210 and the water outlet 220, thus, through holes 331 are formed on the partition plate 330.

[0069] It can be understood that there are several through holes 331. After water enters from the water inlet 210, part of the water will flow between the rotating part 300 and the housing 200 from the part of the water inlet 210 not covered by the rotating part 300 (i.e., the exposed part), and then flow out from the part of the water outlet 220 not covered by the rotating part 300, forming a pressure difference between the rotating part 300 and the housing 200. Another part of the water enters from the water inlet 210, passes through the through holes 331, and then flows out from the water outlet 220 to increase the flow rate of the water.

[0070] Referring to Figure 6 , in this embodiment, the detection part 400 is formed with a second annular groove 420. The upper end of the rotating shaft 320 is inserted into the second annular groove 420, and the upper end of the rotating shaft 320 can move within the second annular groove 420.

[0071] It can be understood that when the rotating housing 310 drives the rotating shaft 320 to perform a circular motion, the rotating shaft 320 can slide within the second annular groove 420 to limit the movement paths of the rotating shaft 320, the rotating housing 310, and the push block 340.

[0072] Specifically, when the rotating housing 310 drives the rotating shaft 320 to move, the upper end of the rotating shaft 320 is restricted to slide within the second annular groove 420, and the lower end of the rotating shaft 320 is restricted to slide within the first annular groove 521, thereby limiting the movement paths of the rotating shaft 320, the rotating housing 310, and the push block 340, and also limiting the installation position of the rotating shaft 320.

[0073] Referring to Figure 5 , in this embodiment, the housing 200 is cylindrical, the rotating shaft 320 is arranged at the central position of the partition 330, and the convex block 410 is arranged on the side of the central position of the detection part 400. When the rotating part 300 performs a circular motion, the push block 340 performs a circular motion around the central position of the detection part 400, so that the push block 340 continuously pushes the convex block 410.

[0074] It can be understood that the inner wall surface of the housing 200 is cylindrical, and the outer wall surface of the rotating housing 310 is also cylindrical, so that the housing 200 and the rotating housing 310 are in sliding fit. In addition, when the rotating shaft 320 performs a circular motion, the push block 340 will perform a circular motion around the central position of the detection part 400. Since the convex block 410 is arranged on the side of the central position of the detection part 400, the push block 340 can continuously push the convex block 410, and the convex block 410 drives the detection part 400 to rotate.

[0075] Referring to Figure 2 , in this embodiment, the upper end of the detection part 400 penetrates through the housing 200. A magnet 430 is arranged at the upper end of the detection part 400, and a concave part 130 is formed at the position of the main body 100 corresponding to the detection part 400. The induction part is arranged within the concave part 130.

[0076] It is understandable that in this embodiment, the sensing part is a Hall sensor. By passing the upper end of the detection part 400 through the housing 200, arranging a magnet 430 at the upper end of the detection part 400, and arranging the sensing part in the concave part 130, the sensing part can be made as close as possible to the magnet 430. When the magnet 430 rotates, the sensing part can more easily obtain the magnetic field change generated when the magnet 430 rotates.

[0077] Referring to Figure 1 , in this embodiment, the water leakage protector of the present application further includes a filtering part 600. The filtering part 600 is arranged in the housing 200 and is used for filtering the water flowing through the housing 200.

[0078] The embodiments of the present application have been described in detail above in conjunction with the accompanying drawings. However, the present application is not limited to the above embodiments. Various changes can be made without departing from the purpose of the present application within the scope of knowledge possessed by those of ordinary skill in the art. In addition, the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

Claims

1. Leakage protector, characterized in that, include: A body, wherein the body has a water inlet and a water outlet, a flow channel allowing water to flow through is formed inside the body, and the water inlet, the flow channel, and the water outlet are connected; A valve body, the valve body is arranged inside the main body, and the valve body is configured to control the communication state between the water inlet end and the water outlet end; A shell, the shell is arranged in the body, the shell is formed with a water inlet and a water outlet, the water inlet end, the water inlet, the water outlet, and the water outlet end are connected in sequence, and the water inlet and the water outlet are staggered; a rotating part, the rotating part is arranged in the shell, and the rotating part can make a circular motion in the shell driven by the water flow, and the projection of the rotating part in the height direction overlaps at least partially with the water inlet and the water outlet respectively, so that the rotating part can cover the water inlet and / or the water outlet; a push block is arranged at the upper end of the rotating part; A detection part, the detection part is rotatably arranged in the housing, the lower end of the detection part is arranged in the rotating part, the lower end of the detection part is provided with a convex block, and the convex block is arranged on the moving path of the push block; A sensing part, the sensing part is used to detect the rotation state of the detection part; A control module is electrically connected to the sensing part and the valve body respectively, and the control module can receive a signal of the rotation state of the detection part detected by the sensing part, and control the connection state of the valve body according to the signal.

2. The water leakage protector according to claim 1, characterized in that It also includes a limiting portion, which connects the inner wall of the shell and the rotating portion, and is used to limit the movement path of the rotating portion.

3. The water leakage protector according to claim 2, characterized in that, The limiting portion includes a limiting plate, the rotating portion forms a limiting groove, one end of the limiting plate is connected to the side wall of the shell, and the limiting plate can be movably inserted in the limiting groove, when the rotating portion rotates, the other end of the limiting plate can slide along the inner wall of the limiting groove.

4. The water leakage protector according to claim 3, characterized in that, The water inlet and the water outlet are located on both sides of the limiting plate.

5. The water leakage protector according to claim 4, characterized in that, The width of the water inlet and the width of the water outlet gradually decrease in a direction away from the limiting plate.

6. The water leakage protector according to claim 2, characterized in that, The limiting part includes a limiting block, which is arranged on the bottom wall of the shell, and a first annular groove is formed on the limiting block. The rotating part includes a rotating shell, a rotating shaft, and a partition; the partition is arranged in the rotating shell, and the partition divides the interior of the rotating shell into an upper part and a lower part, the limiting block is located in the lower part, and the lower end of the detection part and the protrusion are located in the upper part; the rotating shaft passes through the partition, and the lower end of the rotating shaft is inserted in the first annular groove, and the lower end of the rotating shaft can move in the first annular groove, and the pushing block is arranged at the part of the rotating shaft located in the upper part.

7. The water leakage protector according to claim 6, wherein, The partition plate is formed with a through hole.

8. The water leakage protector according to claim 6, characterized in that, The detection portion is formed with a second annular groove, the upper end of the rotating shaft is inserted into the second annular groove, and the upper end of the rotating shaft can move in the second annular groove.

9. The water leakage protector according to claim 6, wherein, The housing is cylindrical, the rotating shaft is arranged at the central position of the partition plate, the convex block is arranged on the side of the central position of the detection part, and when the rotating part makes a circular motion, the push block makes a circular motion around the central position of the detection part so that the push block continuously pushes the convex block.

10. The water leakage protector according to claim 1, characterized in that, The upper end of the detection part penetrates through the housing, a magnet is arranged at the upper end of the detection part, a concave part is formed at the position of the body corresponding to the detection part, and the induction part is arranged in the concave part.

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