Exhaust pressure relief device

Abstract

The utility model discloses an exhaust pressure relief device which comprises a first driving device, a second driving device and an air pump providing power for the first driving device and the second driving device, and a three-way electromagnetic valve is installed at the output end of the air pump. The three-way electromagnetic valve is used for conveying power of the air pump to the first driving device or the second driving device, and an exhaust device is arranged between an air inlet channel of the first driving device and an air inlet channel of the second driving device. And the air inlet passage of the first driving device and the air inlet passage of the second driving device are unidirectionally communicated with the air inlet of the exhaust device. The controller is used for controlling the three-way electromagnetic valve to control air from the air pump to enter the first driving device or the second driving device, so that water drainage is achieved, automatic water drainage is achieved under the linkage control of the controller on the three-way electromagnetic valve and the exhaust device, manual pressing water drainage is not needed, and the risk of cross infection is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of bathroom products, in particular to an exhaust and pressure relief device. Background Art

[0002] The existing dual-flush drain valve generally adopts a mechanical hand-driven mechanism to achieve flushing; the mechanical manual flushing is not convenient enough for users, and is prone to cross infection problems, and cannot guarantee a good user experience for customers. For this reason, we provide an exhaust pressure relief device to solve the above problems. Utility Model Content

[0003] The purpose of the utility model is to overcome the shortcomings of the prior art and provide an exhaust pressure relief device.

[0004] The purpose of the utility model is achieved through the following technical solutions:

[0005] An exhaust pressure relief device includes a first drive device, a second drive device, and an air pump that provides power to the first drive device and the second drive device. A three-way solenoid valve is installed at the output end of the air pump. The three-way solenoid valve is used to transmit the power of the air pump to the first drive device or the second drive device. An exhaust device is arranged between the intake passage of the first drive device and the intake passage of the second drive device. The intake passage of the first drive device and the intake passage of the second drive device are both unidirectionally connected to the intake port of the exhaust device.

[0006] Preferably, an exhaust pipe is arranged between the intake passage of the first drive device and the intake passage of the second drive device, the exhaust device is installed on the exhaust pipe, and a first one-way valve connected to the intake passage of the first drive device and a second one-way valve connected to the intake passage of the second drive device are respectively installed on the exhaust pipes on both sides of the exhaust device, and the first one-way valve and the second one-way valve are unidirectionally connected toward the exhaust device.

[0007] Preferably, the first driving device is a half-drainage driving device for achieving half-drainage, and the second driving device is a full-drainage driving device for achieving full-drainage.

[0008] Preferably, the three-way solenoid valve is provided with a first air outlet and a second air outlet, a first air intake pipe is connected between the first air outlet and the first driving device to form an air intake passage for the first driving device, and a second air intake pipe is connected between the second air outlet and the second driving device to form an air intake passage for the second driving device.

[0009] Preferably, when the three-way solenoid valve is energized, the first air outlet is opened and the second air outlet is closed, conversely, when the power is off, the first air outlet is closed and the second air outlet is opened; or, when the three-way solenoid valve is energized, the first air outlet is closed and the second air outlet is opened, conversely, when the power is off, the first air outlet is opened and the second air outlet is closed.

[0010] Preferably, it also includes a controller electrically connected to the air pump, the three-way solenoid valve and the exhaust device, and the controller controls the opening and closing of the air pump, the three-way solenoid valve and the exhaust device.

[0011] Preferably, the exhaust device is a normally open solenoid valve electrically connected to the controller, and when the controller controls the air pump to open or before it opens, the controller controls the normally open solenoid valve to close, and after the controller controls the air pump to finish working, the normally open solenoid valve opens to release air; or, the exhaust device is a normally closed solenoid valve electrically connected to the controller, and under normal circumstances, the normally closed solenoid valve is in a closed state, and after the controller controls the air pump to finish working, the controller controls the normally closed solenoid valve to open to release air.

[0012] Preferably, it further comprises a sensor, which is electrically connected to the controller, and provides the controller with control signals for controlling the opening and closing of the air pump, the opening and closing of the three-way solenoid valve, and the opening and closing of the exhaust device.

[0013] Preferably, the first one-way valve and the second one-way valve are both duckbill one-way valves or umbrella one-way valves.

[0014] The utility model has the following advantages:

[0015] 1. The utility model controls the three-way solenoid valve through a controller to control the gas from the air pump to enter the first drive device or the second drive device, thereby achieving drainage, and the gas inside the first drive device and the second drive device and in their gas paths can be automatically discharged through the exhaust device to release the drainage state. The automatic drainage is achieved through the linkage control of the three-way solenoid valve and the exhaust device by the controller, and there is no need for manual drainage, thereby reducing the risk of cross infection.

[0016] 2. The utility model realizes one-way communication between the intake passages of the first drive device and the second drive device and the exhaust device through a one-way valve, that is, when in use, the gas of the first drive device can only flow to the exhaust device but not to the second drive device, so that the first drive device and the second drive device can be exhausted respectively through the exhaust device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is an overall schematic diagram of the utility model.

[0018] In the figure:

[0019] 1. Air pump; 2. Three-way solenoid valve; 3. First drive device; 4. Second drive device; 5. Exhaust device; 6. First one-way valve; 7. Second one-way valve; 8. Controller; 9. Sensor; 10. Exhaust pipe; 11. First air inlet pipe; 12. Second air inlet pipe; 13. First air outlet; 14. Second air outlet. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical scheme and advantages of the embodiments of the present invention clearer, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. The components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0021] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0022] like Figure 1 The embodiment shown.

[0023] An exhaust pressure relief device includes a first drive device 3 and a second drive device 4, and an air pump 1 that provides power to the first drive device 3 and the second drive device 4. A three-way solenoid valve 2 is installed at the output end of the air pump 1. The three-way solenoid valve 2 is used to transmit the power of the air pump 1 to the first drive device 3 or the second drive device 4. An exhaust device 5 is arranged between the intake passage of the first drive device 3 and the intake passage of the second drive device 4. The intake passage of the first drive device 3 and the intake passage of the second drive device 4 are both unidirectionally connected to the intake port of the exhaust device 5.

[0024] It also includes a controller 8 electrically connected to the air pump 1 , the three-way solenoid valve 2 and the exhaust device 5 , and the controller 8 controls the opening and closing of the air pump 1 , the three-way solenoid valve 2 and the exhaust device 5 .

[0025] The three-way solenoid valve 2 is controlled by the controller 8 so that the gas from the air pump 1 can be delivered to the first drive device 3 or the second drive device 4. Due to the one-way communication between the first drive device 3, the second drive device 4 and the air inlet of the exhaust device 5, the gas entering the first drive device 3 and its air inlet passage can only pass through the air inlet of the exhaust device 5 and be discharged from the air outlet of the exhaust device 5, but cannot pass through the air inlet of the second drive device 4. Correspondingly, the gas entering the second drive device 4 and its air inlet passage can only pass through the air inlet of the exhaust device 5 and be discharged from the air outlet of the exhaust device 5, but cannot pass through the air inlet passage of the first drive device 3; the user can control the opening of the air outlet of the exhaust device 5 through the controller 8 to discharge the gas of the first drive device 3 and the second drive device 4 and the gas in their air paths, and release the corresponding drainage state. The controller 8 controls the linkage of the three-way solenoid valve 2 and the exhaust device 5 to realize automatic drainage and release of drainage state. During use, there is no need to manually press the drainage button, thereby reducing the risk of cross infection.

[0026] An exhaust pipe 10 is provided between the intake passage of the first drive device 3 and the intake passage of the second drive device 4, the exhaust device 5 is installed on the exhaust pipe 10, and a first one-way valve 6 connected with the intake passage of the first drive device 3 and a second one-way valve 7 connected with the intake passage of the second drive device 4 are respectively installed on the exhaust pipes 10 on both sides of the exhaust device 5, and the first one-way valve 6 and the second one-way valve 7 are unidirectionally connected toward the exhaust device 5.

[0027] See attached Figure 1 As shown, the first one-way valve 6 and the second one-way valve 7 are both installed on the exhaust pipe 10, and the first one-way valve 6 and the second one-way valve 7 are unidirectionally communicated in the direction of the exhaust device 5, and the gas cannot pass in the opposite direction, that is, the gas leading to the first drive device 3 can only be discharged in the direction of the exhaust device 5 through the first one-way valve 6, and cannot enter the intake passage of the second drive device 4 through the second one-way valve 7. Correspondingly, the gas from the second drive device 4 can only be discharged in the direction of the exhaust device 5 through the second one-way valve 7, and cannot enter the intake passage of the first drive device 3 through the first one-way valve 6, thereby facilitating the exhaust. The exhaust device 5 can discharge the gas in the first drive device 3 and the second drive device 4 and their intake passages, so that only one exhaust device 5 can be used to exhaust the first drive device 3 and the second drive device 4 and release the drainage state; in the present embodiment, the first one-way valve 6 and the second one-way valve 7 are both duckbill one-way valves or umbrella-shaped one-way valves; in other embodiments, the first one-way valve 6 and the second one-way valve 7 can also be other types, as long as they can realize the one-way conduction function, and no specific restrictions are made on the specific models and types of the first one-way valve 6 and the second one-way valve 7.

[0028] The first driving device 3 is a half-draining driving device for realizing half-draining, and the second driving device 4 is a full-draining driving device for realizing full-draining.

[0029] The three-way solenoid valve 2 is provided with a first air outlet 13 and a second air outlet 14 . A first air inlet pipe 11 is connected between the first air outlet 13 and the first driving device 3 , and a second air inlet pipe 12 is connected between the second air outlet 14 and the second driving device 4 .

[0030] When the three-way solenoid valve 2 is energized, the first air outlet 13 is opened and the second air outlet 14 is closed; conversely, when the power is off, the first air outlet 13 is closed and the second air outlet 14 is opened; or, when the three-way solenoid valve 2 is energized, the first air outlet 13 is closed and the second air outlet 14 is opened; conversely, when the power is off, the first air outlet 13 is opened and the second air outlet 14 is closed.

[0031] The air inlet of the three-way solenoid valve 2 is connected to the air outlet end of the air pump 1. The controller 8 controls the three-way solenoid valve 2 to open the first air outlet 13, so that the gas in the air pump 1 can be transported to the first driving device 3. Correspondingly, the controller 8 opens the second air outlet 14 of the three-way solenoid valve 2, so that the gas in the air pump 1 can be transported to the second driving device 4. In this embodiment, only one of the first air outlet 13 and the second air outlet 14 of the three-way solenoid valve 2 can be opened, and they cannot be opened at the same time.

[0032] In the present embodiment, a control mode is selected in which the first air outlet 13 of the three-way solenoid valve 2 is closed when the power is on and the second air outlet 14 is opened, and the first air outlet 13 is opened and the second air outlet 14 is closed when the power is off, that is, the three-way solenoid valve 2 does not need to be energized when semi-drainage is achieved. At this time, the first air outlet 13 is opened, so that the first air outlet 13 is connected to the first air inlet pipe 11; in other embodiments, the three-way solenoid valve 2 can also use the former control mode, that is, when the three-way solenoid valve 2 is energized, the first air outlet 13 is opened and the second air outlet 14 is closed, and when the power is off, the first air outlet 13 is closed and the second air outlet 14 is opened, and no specific limitation is made here.

[0033] When semi-drainage is required, the controller 8 controls the air pump 1 to be opened and the three-way solenoid valve 2 to open the first air outlet 13 and close the air outlet of the exhaust device 5. The gas in the air pump 1 enters through the air inlet of the three-way solenoid valve 2 and is then transported to the first air inlet pipe 11 from the first air outlet 13. Then the gas is transported to the first drive device 3. At this time, the gas in the first air inlet pipe 11 enters the exhaust pipe 10 through the first one-way valve 6 and is blocked by the second one-way valve 7 to prevent the gas in the first air inlet pipe 11 from entering the second air inlet pipe 12. The first drive device 3 receives power from the air pump 1 to realize the semi-drainage function; after the semi-drainage is completed, the controller 8 controls the air pump 1 to be closed and the air outlet of the exhaust device 5 to be opened. At this time, the gas in the first air inlet pipe 11 and the first drive device 3 is exhausted through the following path: first air inlet pipe 11→first one-way valve 6→exhaust pipe 10→exhaust device 5 outlet; exhaust is achieved through the above path, thereby releasing the semi-drainage state of the first drive device 3.

[0034] When full drainage is required, the controller 8 controls the start of the air pump 1 and the three-way solenoid valve 2 to open the second air outlet 14 and control the closing of the air outlet of the exhaust device 5. The gas in the air pump 1 passes through the air inlet of the three-way solenoid valve 2, and then is transported to the second air intake pipe 12 through the second air outlet 14 and enters the second drive device 4. The second drive device 4 receives the power from the air pump 1 to realize the full drainage function. At this time, the gas in the second air intake pipe 12 enters the exhaust pipe 10 and is blocked by the first one-way valve 6 to prevent the gas in the second air intake pipe 12 from entering the first air intake pipe 11. When the full drainage is completed, the controller 8 controls the closing of the air pump 1 and controls the opening of the outlet of the exhaust device 5. At this time, the gas discharge path in the second drive device 4 and the second air intake pipe 12 is as follows: second air intake pipe 12→second one-way valve 7→exhaust pipe 10→exhaust device 5 outlet. The gas in the second drive device 4 is exhausted through the above path, thereby releasing the full drainage state.

[0035] The exhaust device 5 is a normally open solenoid valve or a normally closed solenoid valve; since the time for exhausting the first drive device 3 or the second drive device 4 is relatively short, it is not necessary to energize the exhaust valve for a long time. Therefore, in this embodiment, the exhaust device 5 is a normally closed solenoid valve. In actual operation, the normally closed solenoid valve can be energized for a certain period of time and then powered off by the controller 8. It should be noted here that the power is turned on for a period of time in order to open the air outlet of the exhaust device 5, thereby achieving exhaust. After a certain period of time, the gas in the first drive device 3 or the second drive device 4 is exhausted and then the power is turned off, thereby closing the air outlet of the exhaust device 5 and waiting for the next The exhaust operation is performed once; the advantage of using a normally closed solenoid valve here is that there is no need to energize the valve body for a long time to open the air outlet, thereby reducing power consumption; in other embodiments, the exhaust device 5 can also use a normally open solenoid valve. The working principle of the normally open solenoid valve is the same as the overall working principle described above. The only difference is that the normally open solenoid valve remains in an open state when the power is off, and the controller 8 controls the normally open solenoid valve to close when the power is on. It will not be elaborated here, and those skilled in the art can obtain the specific working process based on the above examples; the specific type and model of the normally open solenoid valve or the normally closed solenoid valve are not specifically limited here.

[0036] The sensor 9 is also included. The sensor 9 is electrically connected to the controller 8. The sensor 9 provides the controller 8 with control signals for controlling the opening and closing of the air pump 1, the opening and closing of the three-way solenoid valve 2, and the opening and closing of the exhaust device 5.

[0037] Specifically, when the sensor 9 senses a half-drainage signal, the controller 8 controls the start of the air pump 1 and opens the first air outlet 13 of the three-way solenoid valve 2 to deliver gas to the first drive device 3 to achieve half-drainage. When the half-drainage is completed, the controller 8 controls the closing of the air pump 1 and opens the air outlet of the exhaust device 5, so that the gas of the first drive device 3 is discharged from the air outlet of the exhaust device 5, thereby releasing the half-drainage state.

[0038] When the sensor 9 senses the full drainage signal, the controller 8 controls the start of the air pump 1 and opens the second air outlet 14 of the three-way solenoid valve 2 to transport the gas to the second drive device 4 to achieve full drainage. After the full drainage is completed, the controller 8 controls the closing of the air pump 1 and opens the air outlet of the exhaust device 5, so that the gas in the second drive device 4 is discharged from the air outlet of the exhaust device 5, thereby releasing the full drainage state.

[0039] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An exhaust pressure relief device, characterized in that: It includes a first driving device and a second driving device, and an air pump that provides power to the first driving device and the second driving device. A three-way solenoid valve is installed at the output end of the air pump. The three-way solenoid valve is used to transmit the power of the air pump to the first driving device or the second driving device. An exhaust device is arranged between the intake passage of the first driving device and the intake passage of the second driving device. The intake passage of the first driving device and the intake passage of the second driving device are both unidirectionally connected to the intake port of the exhaust device.

2. An exhaust pressure relief device according to claim 1, characterized in that: An exhaust pipe is arranged between the intake passage of the first driving device and the intake passage of the second driving device, and the exhaust device is installed on the exhaust pipe. A first one-way valve connected to the intake passage of the first driving device and a second one-way valve connected to the intake passage of the second driving device are respectively installed on the exhaust pipes on both sides of the exhaust device. The first one-way valve and the second one-way valve are unidirectionally connected toward the exhaust device.

3. An exhaust pressure relief device according to claim 2, characterized in that: The first driving device is a half-drainage driving device for achieving half-drainage, and the second driving device is a full-drainage driving device for achieving full-drainage.

4. An exhaust pressure relief device according to claim 1 or 3, characterized in that: The three-way solenoid valve is provided with a first air outlet and a second air outlet. A first air intake pipe is connected between the first air outlet and the first driving device to form an air intake passage for the first driving device. A second air intake pipe is connected between the second air outlet and the second driving device to form an air intake passage for the second driving device.

5. An exhaust pressure relief device according to claim 4, characterized in that: When the three-way solenoid valve is energized, the first air outlet is opened and the second air outlet is closed; conversely, when the power is off, the first air outlet is closed and the second air outlet is opened; or, when the three-way solenoid valve is energized, the first air outlet is closed and the second air outlet is opened; conversely, when the power is off, the first air outlet is opened and the second air outlet is closed.

6. An exhaust pressure relief device according to claim 1, characterized in that: It also includes a controller electrically connected to the air pump, the three-way solenoid valve and the exhaust device, and the controller controls the opening and closing of the air pump, the three-way solenoid valve and the exhaust device.

7. An exhaust pressure relief device according to claim 6, characterized in that: The exhaust device is a normally open solenoid valve electrically connected to the controller. When the controller controls the air pump to open or before it opens, the controller controls the normally open solenoid valve to close. After the controller controls the air pump to finish working, the normally open solenoid valve opens to release air. Alternatively, the exhaust device is a normally closed solenoid valve electrically connected to the controller. Under normal circumstances, the normally closed solenoid valve is in a closed state. After the controller controls the air pump to finish working, the controller controls the normally closed solenoid valve to open to release air.

8. An exhaust pressure relief device according to claim 6, characterized in that: It also includes a sensor, which is electrically connected to the controller. The sensor provides the controller with control signals for controlling the opening and closing of the air pump, the opening and closing of the three-way solenoid valve, and the opening and closing of the exhaust device.

9. An exhaust pressure relief device according to claim 2, characterized in that: The first one-way valve and the second one-way valve are both duckbill one-way valves or umbrella one-way valves.

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