Water outlet switching valve, closestool flushing valve and closestool

Abstract

The invention provides a water outlet switching valve. The water outlet switching valve comprises a valve body, a valve element and an electromagnetic assembly. The valve body is divided into a water passing cavity, a moving cavity and a channel for communicating the water passing cavity with the moving cavity; the water passing cavity comprises a water inlet and at least two water outlets; the electromagnetic assembly and the valve element are arranged in the movement cavity and the water passing cavity respectively, and one end of the valve element penetrates through the channel to be in linkage with the electromagnetic assembly. A sealing piece is arranged between the part, located in the channel, of the valve element and the inner wall of the channel. The electromagnetic assembly is used for driving the valve element to move between the first position and the second position so that the water inlet can communicate with the different water outlets. The invention further provides a closestool flushing valve which comprises a water inlet valve and the water outlet switching valve. An outlet of the water inlet valve is communicated with a water tank of the closestool, the water outlet switching valve is arranged in the water tank, a water inlet of the water passing cavity is connected with a closestool water pump, and a water outlet of the water passing cavity is communicated with the ring flushing pipeline and the main flushing pipeline. The invention further provides a closestool which is provided with the flushing valve.

Description

Technical Field

[0001] The present invention relates to a valve body, and particularly to a water outlet switching valve. Background Art

[0002] Currently, a switching valve is generally used on a smart toilet to control the opening and closing of the water circuit. During the flushing process of the smart toilet, the brush ring water circuit is usually opened first for toilet brush ring flushing, and then the main flushing water circuit is opened to realize the flushing function of the toilet. The switching of different water circuits is achieved through the switching valve.

[0003] In the existing smart toilets, an electronic coil switching valve is used to realize the switching of the water circuit. The electronic coil switching valve drives the valve rod to move through the electromagnetic force of the magnetic head, and realizes the movement of the sealing member to block and switch different water circuits. However, during the switching process of the electronic coil switching valve, the sealing member needs to overcome a large water flow thrust to move, and the sealing member mainly relies on the size of the coil magnetic head to provide power.

[0004] For example, in the technology disclosed in Chinese Patent CN116575547A, the valve core shaft, the return spring, and the sealing member are all in the same water passing chamber; the installation position of the return spring in the water passing chamber restricts and affects the cross-section of one of the water outlet ports, resulting in a weakened flow capacity; and when the water quality is poor, impurities, dirt, and scale in the water are likely to accumulate in the solenoid valve during long-term operation, causing the valve core to get stuck and the function to fail. Summary of the Invention

[0005] The main technical problem to be solved by the present invention is to provide a water outlet switching valve that does not affect the flow capacity and does not cause the switching function of the switching valve to fail due to impurity accumulation.

[0006] To solve the above technical problems, the present invention provides a water outlet switching valve, including a valve body, a valve core, and an electromagnetic component; the valve body is divided into a water passing chamber and a movement chamber, and a channel connecting the water passing chamber and the movement chamber;

[0007] The water passing chamber includes a water inlet and at least two water outlet ports; the electromagnetic component and the valve core are respectively disposed in the movement chamber and the water passing chamber, and one end of the valve core passes through the channel and is linked with the electromagnetic component; a sealing member is disposed between the part of the valve core located in the channel and the inner wall of the channel;

[0008] The electromagnetic component is used to drive the valve core to move between a first position and a second position to connect the water inlet with different water outlet ports.

[0009] In a preferred embodiment: the water outlet ports are divided into a first water outlet port and a second water outlet port, and the valve core assembly includes a core shaft and a sealing gasket fixed on the core shaft;

[0010] When the valve core is in the first position, the gasket seals the connection between the second water outlet and the water inlet; when the valve core is in the second position, the gasket seals the connection between the first water outlet and the water inlet.

[0011] In a preferred embodiment: The electromagnetic assembly includes an electromagnet iron core, a coil, and a return spring. The return spring is sleeved outside the electromagnet iron core and is linked with the electromagnet iron core at one end and fixed to the inner wall of the movement cavity at the other end; the movement cavity has a relief channel extending along the axial direction of the electromagnet. When the coil is energized, the electromagnet iron core moves axially in the relief channel to drive the valve core to move from the first position to the second position and compress the return spring to accumulate elastic return force.

[0012] In a preferred embodiment: The electromagnet iron core is fixedly connected to the core shaft.

[0013] In a preferred embodiment: The electromagnet iron core is connected to the core shaft through a connecting member.

[0014] In a preferred embodiment: The side walls of the electromagnet iron core and the core shaft respectively form a first contraction portion and a second contraction portion that contract radially inward;

[0015] The connecting member has a first clamping portion and a second clamping portion that are respectively clamped with the first contraction portion and the second contraction portion.

[0016] The present invention also provides a toilet flushing valve, including: a water inlet valve and the water outlet switching valve as described above;

[0017] The outlet of the water inlet valve is communicated with the water tank of the toilet. The water outlet switching valve is arranged in the water tank, and the water inlet of the water passing cavity is connected to the toilet water pump, and the water outlets of the water passing cavity are respectively communicated with the ring flushing pipeline and the main flushing pipeline.

[0018] In a preferred embodiment: The water inlet valve is a mechanical valve.

[0019] The present invention also provides a toilet equipped with the flushing valve as described above.

[0020] Compared with the prior art, the technical solution of the present invention has the following beneficial effects:

[0021] 1. The present invention provides a water outlet switching valve, which arranges the electromagnetic assembly and the valve core assembly in two independent movement cavities and water passing cavities of the valve body. Only the valve core assembly is in the water passing cavity, effectively reducing the influence of the movement of the valve core assembly on the water passing cavity and improving the flow capacity. The connection between the movement cavity and the water passing cavity is sealed by the valve core and the seal to achieve waterproofing and effectively prevent dirt from entering. In this way, even in the case of poor water quality, it will not affect the normal operation of the electromagnetic assembly.

[0022] 2. The present invention provides a water outlet switching valve. Since the moving chamber does not pass water, there will be no water flow impact on the return spring, and thus no noise will be generated.

[0023] 3. The present invention provides a water outlet switching valve. Since the moving chamber does not pass water, lubricating oil can be stored in the moving chamber, which has the characteristics of rust prevention and smoothness. This enables the iron core to use conventional ferromagnetic materials to reduce costs. Using materials with better ferromagnetism also helps to reduce the amount of copper wire in the electromagnet coil, further reducing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the water circuit of the toilet flushing valve in the preferred embodiment of the present invention;

[0025] Figure 2 It is a schematic diagram of the connection between the toilet flushing valve and the flushing pipeline of the toilet in the preferred embodiment of the present invention;

[0026] Figure 3 It is an exploded view of the water outlet switching valve in the preferred embodiment of the present invention;

[0027] Figure 4 It is a cross-sectional view of the water outlet switching valve when the valve core is in the first position in the preferred embodiment of the present invention;

[0028] Figure 5 It is a cross-sectional view of the water outlet switching valve when the valve core is in the second position in the preferred embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention; obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0030] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "top / bottom end", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention 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 invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0031] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, terms such as "installation", "provided with", "sheathed / connected", "connection", etc. should be understood in a broad sense. For example, "connection" can be a wall-mounted connection, a detachable connection, or an integral connection. It can be a mechanical connection or an electrical connection. It can be directly connected or indirectly connected through an intermediate medium. It can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0032] Reference Figures 1-5 , this embodiment provides a toilet flushing valve, including: a water inlet valve 1 and a water outlet switching valve 2; the water inlet valve 1 is used to introduce tap water into the water tank 3 of the toilet, and the water outlet switching valve 2 is used to convey the water in the water tank 3 to different flushing pipelines of the toilet. In this embodiment, the main flushing pipeline 4 and the rim flushing pipeline 5 are taken as examples.

[0033] The outlet of the water inlet valve 1 is communicated with the water tank 3 of the toilet. The water outlet switching valve 2 is arranged in the water tank 3, and the water inlet of the water outlet switching valve 2 is connected to the toilet water pump 6. The water in the water tank 3 is pumped into the water outlet switching valve 2 through the water pump and then flows out from different water outlets of the water outlet switching valve 2 to realize different flushing functions. In this embodiment, the water outlets of the water passing cavity are respectively communicated with the rim flushing pipeline 5 and the main flushing pipeline 4.

[0034] The water outlet switching valve 2 in this embodiment specifically includes a valve body 21, a valve core 22, and an electromagnetic assembly 23; the valve body 21 is divided into a water passing cavity 211 and a movement cavity 212, and a channel 216 communicating the water passing cavity 211 and the movement cavity 212;

[0035] In this embodiment, since the loop flushing pipe 5 and the main flushing pipe 4 need to be connected, two water outlets are required. If the number of pipes to be connected increases, the number of water outlets can be increased accordingly. The electromagnetic assembly 23 and the valve core 22 are respectively placed in the movement cavity 212 and the water passing cavity 211, and one end of the valve core 22 passes through the channel 216 and is linked with the electromagnetic assembly 23; A seal 223 is arranged between the part of the valve core 22 in the channel 216 and the inner wall of the channel 216, so as to ensure that the movement cavity 212 and the water passing cavity 211 are sealed and isolated; The electromagnetic assembly 23 is used to drive the valve core 22 to move between a first position and a second position, so as to communicate the water inlet 215 of the water passing cavity 211 with different water outlets. When the user flushes the water, the toilet pump 6 is in the closed state at this time, the electromagnetic assembly 23 is powered off, the valve core 22 is in the first position, and the first water outlet 213 discharges water after the pump is started, and loop flushing is carried out at this time; After the loop flushing is completed, the toilet pump 6 is closed, the electromagnetic assembly 23 is powered on, the valve core 22 moves upward to the second position under the action of magnetic force, the toilet pump 6 is started, and the second water outlet 214 discharges water, and main flushing is carried out at this time; After the completion, the toilet pump 6 is closed, the electromagnetic assembly 23 is powered off, and the valve core 22 returns to the first position.

[0036] For the above-mentioned water outlet switching valve 2, the electromagnetic assembly 23 and the valve core 22 assembly are arranged in two independent movement cavities 212 and water passing cavities 211 of the valve body 21. Only the valve core 22 assembly is in the water passing cavity 211, effectively reducing the influence of the movement of the valve core 22 assembly on the water passing cavity 211 and improving the flow capacity. The communication part between the movement cavity 212 and the water passing cavity 211 is sealed by the valve core 22 and the seal to achieve waterproofing, and effectively avoids the entry of dirt. In this way, even in the case of poor water quality, it will not affect the normal operation of the electromagnetic assembly 23. And because the movement cavity 212 does not pass water, there will be no water flow impact on the return spring, and no noise will be generated. Also because the movement cavity 212 does not pass water, lubricating oil can be stored in the movement cavity 212, which has the characteristics of rust prevention and smoothness, so that the iron core can use conventional ferromagnetic materials to reduce costs. Using materials with better ferromagnetism also helps to reduce the amount of copper wire in the electromagnet coil and further reduce costs.

[0037] To enable the first water outlet 213 or the second water outlet 214 to discharge water when the valve core 22 is in different positions, the valve core 22 assembly includes a core shaft 221 and a sealing pad 222 fixed on the core shaft 221; When the valve core 22 is in the first position, the sealing pad 222 seals the communication part between the second water outlet 214 and the water inlet 215; When the valve core 22 is in the second position, the sealing pad 222 seals the communication part between the first water outlet 213 and the water inlet 215.

[0038] In this embodiment, the electromagnetic component 23 includes an electromagnet iron core 231, a coil 232, and a return spring 233. The return spring 233 is sleeved outside the electromagnet iron core 231, and one end thereof is linked with the electromagnet iron core 231, and the other end is fixed to the inner wall of the movement cavity 212. The movement cavity 212 has a relief channel extending along the axial direction of the electromagnet. When the coil 232 is energized, the electromagnet iron core 231 moves axially in the relief channel to drive the valve core 22 to move from the first position to the second position and compress the return spring 233 to accumulate elastic return force.

[0039] To enable the electromagnet iron core 231 to drive the core shaft 221 to move, the electromagnet iron core 231 is fixedly connected to the core shaft 221. In this embodiment, to form a fixed connection, the electromagnet iron core 231 is connected to the core shaft 221 through a connecting member 234. Specifically, the side walls of the electromagnet iron core 231 and the core shaft 221 are respectively radially contracted inward to form a first contraction portion and a second contraction portion. The connecting member 234 has a first clamping portion and a second clamping portion respectively clamped with the first contraction portion and the second contraction portion. As a simple replacement of this embodiment, the electromagnet iron core 231 and the core shaft 221 can also be inserted and connected together by an interference fit method, or the electromagnet iron core 231 and the core shaft 221 can be fixed together by a threaded connection or a riveting and pressing method.

[0040] As mentioned above, the above is only a preferred specific embodiment of the present invention, but the design concept of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention who makes a non-substantive modification to the present invention using this concept shall fall within the scope of infringement of the protection of the present invention.

Claims

1. A water outlet switching valve, characterized in that It includes a valve body, a valve core, and an electromagnetic assembly; the valve body is divided into a water passage chamber and a movement chamber, and a channel connecting the water passage chamber and the movement chamber; The water passage chamber includes a water inlet and at least two water outlets; the electromagnetic assembly and the valve core are respectively disposed in the movement chamber and the water passage chamber, and one end of the valve core passes through the channel and is linked with the electromagnetic assembly; a seal is provided between the part of the valve core located in the channel and the inner wall of the channel; The electromagnetic assembly is used to drive the valve core to move between a first position and a second position to connect the water inlet with different water outlets.

2. The water outlet switching valve according to claim 1, characterized in that: The water outlets are divided into a first water outlet and a second water outlet, and the valve core assembly includes a core shaft and a sealing gasket fixed on the core shaft; When the valve core is in the first position, the sealing gasket seals the connection between the second water outlet and the water inlet; when the valve core is in the second position, the sealing gasket seals the connection between the first water outlet and the water inlet.

3. The water outlet switching valve according to claim 1, characterized in that: The electromagnetic assembly includes an electromagnet iron core, a coil, and a return spring. The return spring is sleeved outside the electromagnet iron core, and one end is linked with the electromagnet iron core, and the other end is fixed on the inner wall of the movement chamber; the movement chamber has a relief channel extending along the axis of the electromagnet. When the coil is energized, the electromagnet iron core moves axially in the relief channel to drive the valve core to move from the first position to the second position and compress the return spring to accumulate elastic return force.

4. The water outlet switching valve according to claim 3, characterized in that: The electromagnet iron core is fixedly connected to the core shaft.

5. The water outlet switching valve according to claim 3, characterized in that: The electromagnet iron core is connected to the core shaft through a connecting member.

6. The water outlet switching valve according to claim 5, characterized in that: The side walls of the electromagnet iron core and the core shaft are respectively radially inwardly contracted to form a first contraction portion and a second contraction portion; The connecting member has a first clamping portion and a second clamping portion respectively clamped with the first contraction portion and the second contraction portion.

7. A toilet flushing valve, characterized in that It includes: An inlet valve and an outlet switching valve according to any one of claims 1-6; The outlet of the inlet valve is connected to the water tank of the toilet. The outlet switching valve is arranged in the water tank, and the water inlet of the water passage chamber is connected to the toilet water pump, and the water outlets of the water passage chamber are respectively connected to the ring flushing pipe and the main flushing pipe.

8. The toilet flushing valve according to claim 7, characterized in that: The inlet valve is a mechanical valve.

9. A toilet, characterized in that Equipped with the flushing valve according to claim 7 or 8.

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