Fluid activated switch

Abstract

The utility model relates to switch technical field discloses a kind of fluid trigger switches, comprising: water inlet part with water inlet and water outlet hole, the water inlet part inside is also provided with a elastic member, the elastic member has the elastic bottom cover, the lower part of bottom cover is also contacted and set the executing member of switch;Through the cooperation of elastic member and bottom cover, so that device only when there is fluid through generates stable sustained pressure trigger executing member, and it can be quickly reset when fluid stops, avoid the problem that traditional float ball or impeller structure fails under low flow condition, to improve the sensitivity and accuracy of response;Executing member can adopt the executing unit of mechanical pressure type switch or the execution (such as sensor unit) of non-mechanical pressure type switch, with diversity and adaptability, both can realize simple structure, lower cost mechanical switch, also can satisfy the sensor switch of higher sensitivity requirement, improve the versatility of the device.

Description

Technical Field

[0001] This utility model relates to the field of switch technology, specifically to a fluid-triggered switch. Background Technology

[0002] In fluid transport and control systems, the presence or absence of fluid is often used to control electrical switches. The switches are required to be triggered and kept on when fluid flows through, and to be automatically disconnected when no fluid flows through, in order to ensure the safety and reliability of the device operation.

[0003] Existing fluid trigger switches mostly rely on mechanical floats, impellers, or simple pressure sensors for triggering. However, traditional structures have the following problems: 1. Float-type or impeller-type triggering mechanisms rely on fluid flow or buoyancy to drive structural movement. In cases of insufficient flow or low water pressure, the switch is prone to malfunction or insufficient sensitivity. 2. Although the solution that uses only electronic pressure sensors has high detection sensitivity, it has a complex structure, high cost, and is easily affected by impurities, humidity and circuit environment, which affects long-term stability. In addition, some existing devices are difficult to reset in time when there is no fluid flow, causing the switch to be falsely triggered, resulting in inaccurate system control.

[0004] Therefore, how to provide a fluid trigger switch that is simple in structure, sensitive in response, can be triggered synchronously with fluid flow, and has reliable reset performance has become a technical problem that urgently needs to be solved in this field. Utility Model Content

[0005] The purpose of this invention is to provide a fluid trigger switch to solve the above-mentioned technical problems.

[0006] This utility model provides the following technical solution: A fluid-triggered switch includes: a water inlet component with a water inlet and a water outlet, wherein an elastic component is further disposed inside the water inlet component, the elastic component having an elastic bottom cover, and the lower part of the bottom cover contacting an actuator of the switch. Fluid enters the inlet component through the inlet, and part of the fluid enters the elastic element to form fluid pressure, causing the actuator to open and trigger the switch. The remaining fluid flows out of the inlet component through the outlet.

[0007] As a preferred embodiment of the above technical solution, The actuator includes a mechanical pressure-type switch actuator unit.

[0008] As a preferred embodiment of the above technical solution, The mechanical pressure switch actuator includes a first spring and a second spring. The first spring and the second spring are in contact with the bottom cover and are subjected to the pressure of the bottom cover.

[0009] As a preferred embodiment of the above technical solution, The actuator includes an actuator unit for a non-mechanical pressure switch.

[0010] As a preferred embodiment of the above technical solution, The actuation unit of the non-mechanical pressure switch includes a pressure sensor.

[0011] As a preferred embodiment of the above technical solution, The upper end of the water inlet is recessed to form a step for supporting the elastic element. The elastic element has a top cover that is sealed and overlapped on the step.

[0012] As a preferred embodiment of the above technical solution, The water outlets are evenly distributed on the steps, and the water outlets penetrate the inner side of the steps.

[0013] As a preferred embodiment of the above technical solution, The inner side of the water inlet further includes a cavity, and the actuator and the elastic member are both disposed in the cavity so that the actuator and the elastic member have room to move.

[0014] As a preferred embodiment of the above technical solution, The elastic element includes a water storage area.

[0015] Compared with the prior art, the beneficial effects of this utility model are: By cooperating with the elastic element and the bottom cover, the device generates a stable and continuous pressure to trigger the actuator only when fluid flows through, and can quickly reset when the fluid stops. This avoids the problem of traditional float or impeller structures failing under low flow conditions, thereby improving the sensitivity and accuracy of the response. The actuator can be an actuator unit of a mechanical pressure switch or an actuator of a non-mechanical pressure switch (such as a sensor unit), which has versatility and adaptability. It can realize both simple and low-cost mechanical switches and sensor switches with higher sensitivity requirements, thus improving the universality of the device. Attached Figure Description

[0016] Figure 1 A cross-sectional structural diagram of the actuator for the first and second springs in this application; Figure 2 This is a schematic diagram of the exploded structure of this application; Figure 3This is a schematic diagram of the connection structure between the first and second spring contacts and the external electrode in this application; Figure 4 This is a cross-sectional structural diagram of the pressure sensor in this application.

[0017] In the diagram: 1. Water inlet; 11. Water inlet; 12. Cavity; 13. Water outlet; 14. Step; 2. Elastic element; 21. Top cover; 22. Water storage area; 23. Bottom cover; 3. First spring; 4. Second spring; 5. Pressure sensor. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] like Figure 1-4 As shown, this utility model provides a technical solution: a fluid trigger switch, including a water inlet 1 with an inlet 11 and an outlet 13. The water inlet 1 also has an elastic element 2. The bottom of the elastic element 2 is an elastic bottom cover 23. The bottom cover 23 contacts an actuator on which the switch is installed. Fluid is input into the elastic element 2 and exerts pressure on the bottom cover 23 to trigger the actuator. When fluid flows through, the actuator is always in the triggered state. When no fluid flows through, the bottom cover 23 cannot receive continuous fluid pressure and has a certain elasticity so that it resets and no longer exerts pressure on the actuator. Thus, when no fluid flows through, the actuator does not receive pressure and is in the closed state, achieving the effect of synchronization with the fluid.

[0020] Furthermore, such as Figure 1 As shown, the actuator includes an actuator unit for a mechanical pressure switch. This actuator unit comprises a first spring 3 and a second spring 4 with conductive properties. The second spring 4 is located above the first spring 3 and is detached from the bottom cover 23. The first spring 3 and the second spring 4 themselves can serve as electrodes, or as... Figure 3 As shown, the tail can also be electrically connected to external electrodes 1 and 2. During operation, the fluid passes through the bottom cover 23, which causes the bottom cover 23 to have a certain continuous downward pressure, which generates pressure on the second spring 4. Under the pressure, the second spring 4 contacts the first spring 3 to achieve the purpose of opening the switch.

[0021] Furthermore, such as Figure 4As shown, the actuator includes an actuator unit for a non-mechanical pressure switch, which is partly a pressure sensor 5. Similarly, when fluid passes through, the bottom cover 23 has a certain continuous downward pressure to trigger the pressure sensor 5. The pressure sensor 5 can be wired or wirelessly connected to the switch to keep the connected switch open.

[0022] In summary, when no fluid passes through, the elasticity of the bottom cover 23 causes it to spring back and reset, thus no longer pressing on the actuator and achieving the purpose of closing the switch.

[0023] Furthermore, such as Figure 1 and Figure 4 As shown, the upper end of the water inlet 1 is recessed downward to form a step 14, and the water outlet 13 is distributed circumferentially along the axis of the step 14 and passes through the step 14. Except for the fluid entering the elastic member 2, the remaining fluid is discharged through the water outlet 13. The elastic member 2 also has an upper cover 21, which overlaps the step 14 and can be sealed and fixed between the upper cover 21 and the step 14.

[0024] Furthermore, the water inlet component 1 also has a cavity 12, which allows the elastic component 2 and the actuator to have a certain amount of room to move.

[0025] Furthermore, a water storage area 22 is also provided inside the elastic element 2.

[0026] The above embodiments are only used to illustrate the technical solution of this utility model, and are not intended to limit it.

Claims

1. A fluid activated switch characterized by, include: A water inlet component (1) with a water inlet (11) and a water outlet (13) is provided inside the water inlet component (1). The elastic component (2) has an elastic bottom cover (23). The lower part of the bottom cover (23) also contacts the actuator of the switch. Fluid enters the inlet (1) through the inlet (11), and part of the fluid enters the elastic member (2) to form fluid pressure, causing the actuator to open to trigger the switch. The remaining fluid flows out of the inlet (1) through the outlet (13).

2. The fluid-activated switch of claim 1, wherein: The actuator includes a mechanical pressure-type switch actuator unit.

3. The fluid-activated switch of claim 2, wherein: The mechanical pressure switch actuator includes a first spring (3) and a second spring (4). The first spring (3) and the second spring (4) are in contact with the bottom cover (23) and are subjected to the pressure of the bottom cover (23).

4. The fluid-activated switch of claim 3, wherein: The actuator includes an actuator unit for a non-mechanical pressure switch.

5. The fluid-activated switch of claim 4, wherein: The actuator of the non-mechanical pressure switch includes a pressure sensor (5).

6. The fluid-activated switch of claim 1, wherein: The upper end of the water inlet (1) is recessed downward to form a step (14) for supporting the elastic element (2). The elastic element (2) has a top cover (21) which is sealed and overlapped on the step (14).

7. The fluid-activated switch of claim 6, wherein: The water outlets (13) are evenly distributed on the steps (14), and the water outlets (13) penetrate the inner side of the steps (14).

8. The fluid-activated switch of claim 1, wherein: The inner side of the water inlet (1) further includes a cavity (12), and the actuator and the elastic member (2) are both disposed in the cavity (12) so that the actuator and the elastic member (2) have room to move.

9. The fluid-activated switch of claim 1, wherein: The elastic element (2) includes a water storage area (22).

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