Water flow switch and water flow valve group

Abstract

The utility model discloses a water flow switch which comprises a connecting shell, a swing rod, a limiting piece and a magnetic control switch. The connecting shell is provided with a connecting cavity; the swing rod is hinged in the connecting cavity, a magnetic block is arranged at the upper end of the swing rod, and the lower end of the swing rod extends out of the connecting cavity downwards; the limiting piece is arranged in the connecting cavity, and a limiting through hole is formed in the limiting piece; the magnetic control switch is arranged on the outer side of the connecting shell and used for being matched with the magnetic block to detect the swing position of the swing rod. The utility model further discloses a water flow valve group comprising the water flow switch. According to the water flow switch, an existing water flow switch structure is simplified, the swing amplitude of the swing rod can be controlled through the limiting through hole in the limiting piece, the situation that the swing rod cannot reset due to the fact that the swing amplitude exceeds the preset range is avoided, and therefore the number of accessories and adhesion of impurities and water scales can be reduced, water resistance can be reduced, and the sensitivity of water flow detection can be greatly improved; therefore, the stability of the water supply system is enhanced.

Description

Technical Field

[0001] The present application relates to the technical field of water flow detection, and in particular to a water flow switch and a water flow valve group. Background Art

[0002] A water flow switch is a sensor device used for processes such as water circulation control, water inlet and outlet control, water heating control, water pump switch control, solenoid valve on-off control, or water outlet power-off and water outlet power-on control of electric water heaters, solar water heaters, air conditioners, and other water systems. When the flow rate reaches a certain value, it converts the water flow into a switch-type electrical signal.

[0003] However, the water flow switch in the prior art has a large flow resistance, many internal structural parts, and most of them use spring reset. When impurities and scale in the water flow adhere to the parts and springs, it affects the sensitivity of the water flow switch. In addition, for the water flow valve group equipped with the existing water flow switch, most of its connection and installation methods use threaded connections, and this threaded connection method cannot further meet the usage requirements of quick installation and disassembly, and thus cannot further quickly carry out maintenance work such as disassembly, cleaning, and replacement. Therefore, those skilled in the art urgently need to develop a water flow switch with a simpler structure and a water flow valve group that can be quickly disassembled and assembled to meet the actual application requirements. Utility Model Content

[0004] To solve the above technical problems, the present application provides a water flow switch, which includes a connection housing having a connection cavity, and further includes:

[0005] A swing rod, which is hinged in the connection cavity, has a magnetic block at its upper end, and its lower end extends downward out of the connection cavity;

[0006] A limiting piece, which is arranged in the connection cavity, and has a limiting through hole on it for limiting the swinging amplitude of the upper end of the swing rod;

[0007] A magnetic control switch, which is arranged outside the connection housing and is used to cooperate with the magnetic block to detect the swinging position of the swing rod.

[0008] For the water flow switch as described above, a flat portion for contacting the water flow is provided at the lower end of the swing rod.

[0009] For the water flow switch as described above, a weight block is embedded inside the flat portion.

[0010] For the water flow switch as described above, the position height of the limiting piece is higher than the height of the hinge point where the swing rod is hinged to the connection cavity.

[0011] The present application also provides a water flow valve group, which includes the water flow switch as described above.

[0012] As described above, the water flow valve group further comprises a valve body connected to the water flow switch, and a quick sealing connection structure provided between the valve body and the water flow switch.

[0013] The water flow valve assembly as described above, wherein the valve body is provided with a water flow channel, and also provided with a connecting hole which is connected with the water flow channel and is used to make way for the water flow switch;

[0014] The quick sealing connection structure comprises:

[0015] A sealing ring, which is arranged on the outer side of the lower end of the connecting shell;

[0016] A retaining ring groove is provided on the outer side of the lower end of the connecting housing and is located on the upper side of the sealing ring;

[0017] A recessed position is formed on the side wall of the connecting opening and is recessed downward;

[0018] A first connecting hole, which is opened on the valve body, located on one side of the recessed position, and is connected to the connecting opening;

[0019] A second connecting hole is formed on the valve body and is located at the other side of the recessed position, and is connected to the connecting opening;

[0020] A clamping pin, which is in a U shape, with one leg extending into the first connection hole and clamped to one side of the clamping ring groove, and the other leg extending into the second connection hole and clamped to the other side of the clamping ring groove;

[0021] The extended locking portion is arranged on the connecting shell, located on the upper side of the clamping ring groove, and extends outward and is adapted to be connected to the yielding recess, so as to lock the clamping pin on the valve body.

[0022] In the water flow valve assembly as described above, the protruding locking portion is provided with a hook portion for contacting and locking the locking latch.

[0023] In the water flow valve assembly as described above, the number of the sealing rings is 2 and they are arranged at intervals in the upper and lower parts.

[0024] Compared with the prior art, the above application has the following advantages:

[0025] 1. Through the cooperation of the connecting housing, the swing rod, the limiting piece, and the magnetic control switch in the present application, the structure of the existing water flow switch is simplified. Moreover, through the limiting through hole on the limiting piece, the swinging amplitude of the swing rod can be accurately controlled, preventing it from exceeding the preset range and being unable to reset. As a result, the number of accessories can be reduced, and the adhesion of impurities and scale can be decreased. Furthermore, not only can the water resistance be reduced, but also the sensitivity of water flow detection can be significantly improved, thereby enhancing the stability and reliability of the entire water supply system.

[0026] 2. The water flow valve group of the present application realizes the quick assembly and disassembly of the water flow switch and the valve body through the quick sealing connection structure, thereby further facilitating maintenance work such as quick disassembly, cleaning, and replacement, and greatly improving the practicability and applicability of the water flow valve group. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0028] Figure 1 is a perspective view of the water flow valve group of the present application.

[0029] Figure 2 is a partial exploded view of the water flow valve group of the present application.

[0030] Figure 3 is Figure 2 a partial enlarged view of Figure Ⅰ .

[0031] Figure 4 is a cross-sectional view of the water flow valve group of the present application.

[0032] Figure 5 is Figure 4 a partial enlarged view of Figure Ⅱ .

[0033] Figure 6 is a perspective view of the water flow valve group of the present application with the valve body and the clamping pin hidden.

[0034] Figure 7 is an exploded view of the swing rod in the water flow valve group of the present application. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0035] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present application.

[0036] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present application are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If this specific posture changes, the directional indications will also change accordingly.

[0037] In addition, the descriptions involving "first", "second", etc. in the present application are only for descriptive purposes, and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present application.

[0038] In an embodiment of the present application, as Figures 1 to 7 shown, a water flow switch includes a connecting housing 1, a swing rod 2, a limiting piece 3, and a magnetic control switch 4;

[0039] The connecting housing 1 is provided with a connecting cavity 11; the swing rod 2 is hinged in the connecting cavity 11, and a magnetic block 21 is provided at its upper end, and its lower end extends downward out of the connecting cavity 11; the limiting piece 3 is arranged in the connecting cavity 11, and a limiting through hole 31 for limiting the swing amplitude of the upper end of the swing rod 2 is opened thereon; the magnetic control switch 4 is arranged outside the connecting housing 1 and is used to cooperate with the magnetic block 21 to detect the swing position of the swing rod 2.

[0040] The water flow switch of the present application realizes the simplification of the structure of the existing water flow switch through the cooperation of the connecting housing 1, the swing rod 2, the limiting piece 3, and the magnetic control switch 4. And through the limiting through hole 31 on the limiting piece 3, the swing amplitude of the swing rod 2 can be accurately controlled to avoid exceeding the preset range and being unable to reset, thereby reducing accessories and reducing the adhesion of impurities and scale. Furthermore, not only can the water resistance be reduced, but also the sensitivity of water flow detection can be greatly improved, so as to enhance the stability and reliability of the entire water supply system.

[0041] Further, a flat portion 22 for contacting the water flow is provided at the lower end of the swing rod 2. The flat extension direction of the flat portion 22 is perpendicular to the water flow direction, aiming to achieve the maximum contact area.

[0042] Furthermore, a counterweight 221 is embedded inside the flat portion 22. The purpose is to increase the weight of the lower end of the swing rod 2 according to actual usage requirements, so that the swing rod 2 can meet the usage requirements of different water flow systems.

[0043] Furthermore, the position height of the limiting piece 3 is higher than the height of the hinge joint where the swing rod 2 is hinged to the connecting cavity 11. The purpose is not only to avoid position interference with the hinge joint of the swing rod 2, but also to facilitate restricting the swing amplitude of the upper end of the swing rod 2, thereby achieving an effective limiting effect.

[0044] A water flow valve group includes the water flow switch 100 as described above, a valve body 200 connected to the water flow switch 100, and a quick-sealing connection structure 300 provided between the valve body 200 and the water flow switch.

[0045] Further, a water flow channel 201 is opened on the valve body 200, and a connection opening 202 is also opened on the valve body 200, which is connected to the water flow channel 201 and is used to make way for connecting the water flow switch.

[0046] The quick-sealing connection structure 300 includes a sealing ring 301, a clamping ring groove 302, a relief recess 303, a first connection hole 304, a second connection hole 305, a clamping pin 306, and an extended locking portion 307.

[0047] The sealing ring 301 is provided on the outer side of the lower end of the connection housing 1; the clamping ring groove 302 is opened on the outer side of the lower end of the connection housing 1 and is located above the sealing ring 301; the relief recess 303 is opened on the side wall of the connection opening 202 and is recessed downward; the first connection hole 304 is opened on the valve body 200, located on one side of the relief recess 303 and is connected to the connection opening 202; the second connection hole 305 is opened on the valve body 200, located on the other side of the relief recess 303 and is connected to the connection opening 202; the clamping pin 306 is U-shaped, and one leg of it extends into the first connection hole 304 and is clamped on one side of the clamping ring groove 302, and the other leg extends into the second connection hole 305 and is clamped on the other side of the clamping ring groove 302; the extended locking portion 307 is provided on the connection housing 1, located above the clamping ring groove 302, extends outward and is adaptively connected to the relief recess 303, and is used to lock the clamping pin 306 on the valve body 200.

[0048] The water flow valve group of the present application realizes the quick assembly and disassembly of the water flow switch 100 and the valve body 200 through the quick sealing connection structure 300, thereby further facilitating the maintenance work such as quick disassembly, cleaning, and replacement, and greatly improving the practicability and applicability of the water flow valve group.

[0049] Furthermore, a hook portion 3071 for contacting and locking the clamping pin 306 is provided on the protruding locking portion 307. The hook portion 3071 is adapted to the clamping pin 306. The purpose is to effectively clamp the clamping pin 306.

[0050] Furthermore, the number of the sealing rings 301 is two, and they are arranged at intervals up and down. The advantage is to form a double sealing connection function and avoid water leakage.

[0051] As described above, an implementation manner is provided in combination with specific content, and it is not determined that the specific implementation of the present application is only limited to these descriptions. Any method, structure, etc. that is similar or identical to the present application, or any technical deduction or replacement made under the premise of the concept of the present application, should be regarded as the protection scope of the present application.

Claims

1. A water flow switch, comprising a connection housing (1) having a connection cavity (11), characterized in that: Also includes: A swing rod (2) is hinged in the connecting cavity (11), a magnetic block (21) is provided at its upper end, and a lower end thereof extends downwardly out of the connecting cavity (11); A limiting plate (3) is arranged in the connecting cavity (11) and is provided with a limiting through hole (31) for limiting the swing amplitude of the upper end of the swing rod (2); A magnetically controlled switch (4) is arranged outside the connecting housing (1) and is used to cooperate with the magnetic block (21) to detect the swing position of the swing rod (2).

2. The water flow switch according to claim 1, characterized in that: The lower end of the swing rod (2) is provided with a flat portion (22) for contacting the water flow.

3. The water flow switch according to claim 2, characterized in that: A counterweight block (221) is embedded inside the flat portion (22).

4. The water flow switch according to claim 1, characterized in that: The position height of the limiting plate (3) is higher than the height of the hinge where the swing rod (2) and the connecting cavity (11) are hinged.

5. A water flow valve group, characterized in that: It comprises a water flow switch as described in any one of claims 1 to 4.

6. The water flow valve assembly according to claim 5, characterized in that: The water flow valve assembly further comprises a valve body (200) connected to the water flow switch, and a quick sealing connection structure (300) provided between the valve body (200) and the water flow switch.

7. The water flow valve assembly according to claim 6, characterized in that: The valve body (200) is provided with a water flow channel (201), and is also provided with a connection opening (202) which is in communication with the water flow channel (201) and is used to allow the water flow switch to be connected; The quick sealing connection structure (300) comprises: A sealing ring (301) disposed on the outer side of the lower end of the connecting shell (1); A retaining ring groove (302) is formed on the outer side of the lower end of the connecting shell (1) and is located on the upper side of the sealing ring (301); A recessed position (303) is formed on the side wall of the connecting opening (202) and is recessed downward; A first connecting hole (304) is formed on the valve body (200), is located on one side of the recessed position (303), and is connected to the connecting opening (202); A second connecting hole (305) is formed on the valve body (200), is located on the other side of the recessed position (303), and is connected to the connecting opening (202); A clamping pin (306) having a U-shape, one leg of which is inserted into the first connection hole (304) and clamped to one side of the clamping ring groove (302), and the other leg of which is inserted into the second connection hole (305) and clamped to the other side of the clamping ring groove (302); A protruding locking portion (307) is provided on the connecting shell (1), is located on the upper side of the locking ring groove (302), protrudes outward and is adapted to be connected to the yielding recess (303), and is used to lock the locking pin (306) on the valve body (200).

8. The water flow valve assembly according to claim 7, characterized in that: The protruding locking portion (307) is provided with a hook portion (3071) for contacting and locking the locking latch (306).

9. The water flow valve assembly according to claim 7, characterized in that: The number of the sealing rings (301) is two, and they are arranged at intervals in an upper and lower position.

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