Mechanical switching device driven by water flow

Abstract

The utility model provides a kind of water flow driven mechanical switching device, including valve body, water inlet waterway, outlet waterway A and outlet waterway B are sequentially communicated and are equipped in valve body, the water inlet waterway is communicated with water inlet, the outlet waterway A is rotatably installed with driving wheel, the driving wheel is connected with pivot, the outlet waterway B is respectively communicated with outlet A and outlet B, the communication of water inlet waterway and outlet waterway B is equipped with valve, pivot is connected with switching plate A for plugging outlet A and switching plate B for plugging outlet B;The utility model can be very accurate control the flow of each outlet and overall water consumption by the opening time and switching time of water flow control valve;Mechanical structure is relatively simple, control mode is simple, with remarkable cost economy.

Description

Technical Field

[0001] This utility model relates to the technical field of water circuit switching devices, and in particular to water flow driven mechanical switching devices. Background Technology

[0002] Currently, dual-outlet flush valves mainly achieve staggered water discharge from two outlets through a mechanical switching structure. When using this mechanical switching structure, the core is to use a pneumatic device to directly achieve selective blocking and switching of the two outlets through the valve core structure of the valve seat.

[0003] When this type of flush valve is in use, if the inlet water pressure is too high, the high-pressure impact will cause the return spring to compress and deform or the limit mechanism to fail, resulting in the valve core being unable to return to the initial position. The outlet will remain open and the water cannot be shut off. Alternatively, the pneumatic device may leak and fail after prolonged use, leading to continuous leakage or overflow. This not only wastes water resources but may also cause derivative problems such as water accumulation in the environment and equipment damage. Summary of the Invention

[0004] The purpose of this invention is to solve the problems in the prior art by proposing a water-driven mechanical switching device that can solve the above problems.

[0005] To achieve the above objectives, this utility model proposes a water-driven mechanical switching device, including a valve body. The valve body is provided with an inlet water passage, an outlet water passage A, and an outlet water passage B connected in sequence. The inlet water passage is connected to an inlet. A drive wheel is rotatably installed in the outlet water passage A, and the drive wheel is connected to a rotating shaft. The outlet water passage B is connected to an outlet A and an outlet B. A valve is provided at the connection between the inlet water passage and the outlet water passage B. A switching plate A for blocking outlet A and a switching plate B for blocking outlet B are connected to the rotating shaft.

[0006] Preferably, the valve is opened and closed by an operating rod. The rotating shaft is provided with a raised retaining ring and a limiting groove. When the outer edge of the retaining ring contacts the operating rod, the valve opens. During the rotation of the rotating shaft, the outer edge of the retaining ring can continuously press against the operating rod, so that the valve automatically remains open. When the limiting groove rotates to the corresponding position of the operating rod, the operating rod falls into the limiting groove and the valve closes.

[0007] Preferably, a water supply chamber, a diaphragm, and a valve seat are provided between the inlet water passage and the outlet water passage A. The valve includes a drain pipe, the water supply chamber is connected to the drain pipe, and the drain pipe is sealed and isolated from the outlet water passage B by a sealing device. An operating rod is movably installed in the sealing device, and a mounting seat is provided on the valve body. A manual button is installed on the mounting seat, and the manual button is connected to the operating rod. The operating rod can disengage from the limiting groove when the manual button is pressed, thereby opening the valve.

[0008] Preferably, the rotating shaft includes a first rotating shaft and a second rotating shaft, and the switching plate A and the switching plate B are radially offset.

[0009] Preferably, a retaining baffle is fitted on the rotating shaft, and the rotating shaft is relatively fixed to the retaining baffle by an elastic clamping component. A drainage hole is provided on the operating rod, and a retaining ring is provided on the retaining baffle.

[0010] Preferably, the drain pipe is connected to the outlet water passage B through a drain hole. The operating rod is equipped with a sealing element, and a return spring is provided between the operating rod and the sealing device. When no force is applied, the sealing element presses and seals the drain hole. When the manual button is pressed, it drives the operating rod to move, and the sealing element releases the seal on the drain hole, so that the drain pipe is connected to the outlet water passage B.

[0011] Preferably, when the operating rod disengages from the limiting groove, the drainage hole connects the drainage pipe and the water outlet B; when the operating rod falls into the limiting groove, the drainage hole closes.

[0012] Preferably, the elastic clamping assembly includes a clamping spring, a limiting block and a mounting block are provided on the rotating shaft, the retaining baffle is located between the limiting block and the mounting block, one end of the clamping spring abuts against the mounting block, and the other end abuts against the retaining baffle.

[0013] Preferably, a reduction gearbox is provided on the power transmission path between the drive wheel and the shaft.

[0014] Preferably, the manual button is rotatably mounted on the mounting base via a third rotating shaft. A return spring is provided between the manual button and the mounting base. The mounting base has a sealed cavity communicating with the drainage pipe. A sealing device is installed in the sealed cavity. The sealing device simultaneously seals the drainage pipe and the connection between external air and the water outlet B. The drainage pipe and the water outlet B are connected through a flow hole. One end of the operating rod is rotatably connected to the manual button, and the other end is movably inserted into the flow hole to seal the connection between the drainage pipe and the water outlet B.

[0015] Preferably, the operating rod has a drainage hole at one end near the retaining baffle, and an inlet is provided on the side of the drainage hole near the drainage tube. The inlet can be used to open or close the drainage tube by moving the operating rod up and down.

[0016] The beneficial effects of this utility model are: 1. This utility model can precisely control the flow rate of each outlet and the overall water consumption by controlling the opening and switching time of the water flow control valve; 2. The mechanical structure of this utility model is relatively simple, the control method is simple, and it has significant cost-effectiveness; 3. In complex market usage environments and complex water usage conditions, this utility model has measures to prevent mechanical abnormal jamming. The valve can be closed by forcibly pressing the manual button, which effectively prevents water leakage or valve failure. 4. This utility model can operate under low water pressure conditions, requiring only 0.05MPa water pressure to ensure normal valve operation, and has low water pressure drive characteristics; 5. The manual button of this utility model requires a small driving force; under normal working conditions, only about 5N of driving force is needed to achieve operation.

[0017] The features and advantages of this utility model will be described in detail through embodiments and accompanying drawings. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of this utility model; Figure 2 This is a left view of Embodiment 1 of this utility model; Figure 3 This is a front view of Embodiment 1 of this utility model; Figure 4 This is a schematic diagram of the AA cross-section of this utility model; Figure 5 yes Figure 4 A magnified view of a portion of the image; Figure 6 yes Figure 3 A schematic diagram of the CC cross-section; Figure 7 This is a schematic diagram of the valve in Embodiment 2 of this utility model.

[0019] In the diagram: 1. Valve body; 2. Holding baffle; 3. Drain pipe; 4. Sealing device; 5. Operating lever; 6. Drive wheel; 7. First rotating shaft; 8. Flow hole; 9. Manual button; 10. Valve; 11. Water supply chamber; 12. Inlet water path; 13. Outlet water path A; 14. Outlet water path B; 15. Outlet A; 16. Outlet B; 17. Inlet; 20. Mounting seat; 21. Limiting groove; 22. Sealing cavity; 23. Third rotating shaft; 30. Compression spring; 31. Return spring; 40. Valve seat; 41. Diaphragm; 51. Drain hole; 52. Inlet; 53. Seal; 61. Gearbox; 71. Second rotating shaft; 72. Switching plate A; 73. Switching plate B; 81. Limiting block; 82. Mounting block. Detailed Implementation

[0020] Example 1 See Figures 1 to 6A water-driven mechanical switching device includes a valve body 1. The valve body 1 has an inlet water passage 12, an outlet water passage A13, and an outlet water passage B14 connected in sequence. The inlet water passage 12 is connected to an inlet 17. A drive wheel 6 is rotatably installed in the outlet water passage A13. The drive wheel 6 is connected to a rotating shaft. The outlet water passage B14 is connected to an outlet A15 and an outlet B16. A valve 10 is provided at the connection between the inlet water passage 12 and the outlet water passage B14. A switching plate A72 for blocking the outlet A15 and a switching plate B73 for blocking the outlet B16 are connected to the rotating shaft.

[0021] The valve 10 is opened and closed by the operating rod 5. The rotating shaft is provided with a raised retaining ring and a limiting groove 21. When the outer edge of the retaining ring contacts the operating rod 5, the valve 10 is opened. During the rotation of the rotating shaft, the outer edge of the retaining ring can continuously press against the operating rod 5, so that the valve 10 automatically remains open. When the limiting groove 21 rotates to the corresponding position of the operating rod 5, the operating rod 5 falls into the limiting groove 21 and the valve 10 is closed.

[0022] A water supply chamber 11, a diaphragm 41, and a valve seat 40 are provided between the inlet water passage 12 and the outlet water passage A13. The valve 10 includes a diversion pipe 3. The water supply chamber 11 is connected to the diversion pipe 3. The diversion pipe 3 is sealed and isolated from the outlet water passage B14 by a sealing device 4. An operating rod 5 is movably installed in the sealing device 4. A mounting seat 20 is provided on the valve body 1. A manual button 9 is installed on the mounting seat 20. The manual button 9 is connected to the operating rod 5. The operating rod 5 can disengage from the limiting groove 21 when the manual button 9 is pressed, so that the valve 10 is opened.

[0023] The rotating shaft includes a first rotating shaft 7 and a second rotating shaft 71, and the switching plate A72 and the switching plate B73 are radially offset.

[0024] A retaining baffle 2 is fitted on the rotating shaft, and the rotating shaft is relatively fixed to the retaining baffle 2 by an elastic clamping assembly. A drainage hole 51 is provided on the operating rod 5, and a retaining ring is provided on the retaining baffle 2.

[0025] When the operating rod 5 disengages from the limiting groove 21, the drainage hole 51 connects the drainage pipe 3 and the water outlet B14; when the operating rod 5 falls into the limiting groove 21, the drainage hole 51 is closed.

[0026] The elastic clamping assembly includes a clamping spring 30, a limiting block 81 and a mounting block 82 are provided on the rotating shaft, the retaining baffle 2 is located between the limiting block 81 and the mounting block 82, one end of the clamping spring 30 abuts against the mounting block 82, and the other end abuts against the retaining baffle 2.

[0027] A reduction gearbox 61 is configured on the power transmission path between the drive wheel 6 and the shaft.

[0028] The manual button 9 is rotatably mounted on the mounting base 20 via the third rotating shaft 23. A return spring 31 is provided between the manual button 9 and the mounting base 20. The mounting base 20 is provided with a sealed cavity 22 that communicates with the drainage pipe 3. A sealing device 4 is installed in the sealed cavity 22. The sealing device 4 simultaneously seals the drainage pipe 3 and the connection between the external air and the water outlet B14. The drainage pipe 3 and the water outlet B14 are connected through a flow hole 8. One end of the operating rod 5 is rotatably connected to the manual button 9, and the other end is movably inserted into the flow hole 8 and seals the connection between the drainage pipe 3 and the water outlet B14.

[0029] The operating lever 5 has a drainage hole 51 at one end near the retaining baffle 2, and the drainage hole 51 has an inlet 52 on the side near the drainage tube 3. The inlet 52 can be opened or closed by moving the operating lever 5 up and down.

[0030] When water is flowing from outlet A, the switching plate B rotates to the angle that blocks outlet B; when water is flowing from outlet B, the switching plate A rotates to the angle that blocks outlet A, thus achieving staggered water flow.

[0031] The working process of this utility model: After pressing the manual button, the manual button moves the operating lever upward, separating the operating lever from the limiting groove 21 of the forced reset baffle. After pressing, the user can release the lever. The outer edge of the forced reset baffle keeps the operating lever from falling off. The lever connects the drainage path and the outlet water path B through the drainage hole, opening the valve. (When the drainage path and outlet water path B are closed, a small hole on the diaphragm connects the inlet water path and the supply chamber, making the pressure on both sides of the supply chamber and the inlet water path equal, resulting in a zero pressure difference on the diaphragm. The diaphragm is elastically sealed to the valve seat with rubber. When the drainage path and outlet water path B are connected, the water pressure in the supply chamber is less than that in the inlet water path, causing the diaphragm to be lifted by the water pressure in the inlet water path, opening the valve seat and opening the valve.) Water flows into outlet water path A through the inlet water path and then into outlet water path B, driving the drive wheel to rotate in outlet water path B.

[0032] The drive wheel drives the first shaft to rotate via a reduction gearbox. The first shaft drives the second shaft to rotate. The second shaft is connected to switching plate A, switching plate B, and a holding baffle. Therefore, after the water flow drives the drive wheel to rotate, the drive wheel will drive switching plate A and switching plate B to rotate. When switching plate A blocks outlet A, outlet B opens. When switching plate B blocks outlet B, outlet A opens. Thus, when the valve is open, outlet A and outlet B can output water at different times depending on the opening and blocking of switching plate A and switching plate B.

[0033] As the operating lever is pulled away from the limiting groove, the forced limiting of the holding baffle is released. Under the action of the compression spring, the holding baffle is pressed and fixed on the limiting block of the second rotating shaft. The holding baffle also begins to rotate with the rotating shaft 2. After the limiting groove and the operating lever are disengaged, the outer edge of the holding baffle begins to forcibly lift the operating lever to prevent it from falling, keeping the valve open. After the entire holding baffle rotates one revolution, the limiting groove returns to the position corresponding to the operating lever, and the operating lever is pressed back into the limiting groove by the reset spring, closing the valve.

[0034] The process of forced reset: Under normal circumstances, when the manual button is pressed, the operating lever is pulled up and then held in place by the edge of the retaining baffle to prevent it from falling, thus keeping the valve open. When the retaining baffle rotates one full turn with the shaft, the operating lever falls back into the groove and the valve closes. If a malfunction occurs, specifically when the valve is in the open operating state (i.e., the operating lever is held in place by the retaining baffle), the entire mechanical switching mechanism may fail and become stuck, causing the valve to continuously discharge water and preventing it from closing. In this abnormal situation, the operating lever can be forcibly pressed down by pressing the manual button. The outer edge of the lever is a sloping conical surface. At this time, the operating lever will push the retaining baffle backward along the sloping conical surface, compressing the pressure spring behind the retaining baffle. The retaining baffle is then forcibly moved backward, and finally the operating lever is pressed down, closing the valve.

[0035] To reopen the valve, simply press the manual button to restore its working state and resume operation.

[0036] Example 2 See Figure 7 The drain pipe 3 is connected to the outlet water passage B14 through the drain hole 51. The operating rod 5 is equipped with a sealing element 53. When no force is applied, a return spring 31 is provided between the operating rod 5 and the sealing device 4. When no force is applied, the sealing element 53 presses and seals the drain hole 51 under the elastic force of the spring. When the manual button 9 is pressed, it drives the operating rod 5 to move upward against the elastic force of the spring, and the sealing element 53 releases the seal on the drain hole 51, so that the drain pipe 3 is connected to the outlet water passage B14 and the valve is opened.

[0037] This embodiment discloses another method for opening the valve.

[0038] Everything else is the same as in Example 1.

[0039] The above embodiments are illustrative of the present invention and are not intended to limit the present invention. Any simple modifications to the present invention are within the protection scope of the present invention.

Claims

1. A water-driven mechanical switching device, characterized in that: The valve includes a valve body (1), which is provided with an inlet water passage (12), an outlet water passage A (13) and an outlet water passage B (14) connected in sequence. The inlet water passage (12) is connected to an inlet (17). A drive wheel (6) is rotatably installed in the outlet water passage A (13). The drive wheel (6) is connected to a rotating shaft. The outlet water passage B (14) is connected to an outlet A (15) and an outlet B (16). A valve (10) is provided at the connection between the inlet water passage (12) and the outlet water passage B (14). A switching plate A (72) for blocking the outlet A (15) and a switching plate B (73) for blocking the outlet B (16) are connected to the rotating shaft.

2. The water-driven mechanical switching device as described in claim 1, characterized in that: The valve (10) is opened and closed by the operating rod (5). The rotating shaft is provided with a raised retaining ring and a limiting groove (21) is provided on the retaining ring. When the outer edge of the retaining ring contacts the operating rod (5), the valve (10) is opened. During the rotation of the rotating shaft, the outer edge of the retaining ring can continuously press against the operating rod (5), so that the valve (10) automatically remains open. When the limiting groove (21) rotates to the corresponding position of the operating rod (5), the operating rod (5) falls into the limiting groove (21) and the valve (10) is closed.

3. The water-driven mechanical switching device as described in claim 2, characterized in that: A water supply chamber (11), a diaphragm (41), and a valve seat (40) are provided between the water inlet channel (12) and the water outlet channel A (13). The valve (10) includes a diversion pipe (3). The water supply chamber (11) is connected to the diversion pipe (3). The diversion pipe (3) and the water outlet channel B (14) are sealed and isolated by a sealing device (4). An operating rod (5) is movably installed in the sealing device (4). A mounting seat (20) is provided on the valve body (1). A manual button (9) is installed on the mounting seat (20). The manual button (9) is connected to the operating rod (5) in a transmission manner. The operating rod (5) can disengage from the limiting groove (21) as the manual button (9) is pressed, so that the valve (10) can be opened.

4. The water-driven mechanical switching device as described in claim 2, characterized in that: The rotating shaft includes a first rotating shaft (7) and a second rotating shaft (71), and the switching plate A (72) and the switching plate B (73) are radially offset.

5. The water-driven mechanical switching device as described in claim 3, characterized in that: A retaining baffle (2) is fitted on the rotating shaft. The rotating shaft is relatively fixed to the retaining baffle (2) by an elastic clamping assembly. A drainage hole (51) is provided on the operating rod (5). A retaining ring is provided on the retaining baffle (2). The outer edge of the retaining ring is a slanted conical surface.

6. The water-driven mechanical switching device as described in claim 3, characterized in that: The drain pipe (3) is connected to the outlet water passage B (14) through the drain hole (51). The operating rod (5) is provided with a sealing element (53). A return spring (31) is provided between the operating rod (5) and the sealing device (4). When there is no force, the sealing element (53) presses and seals the drain hole (51). When the manual button (9) is pressed, it drives the operating rod (5) to move, and the sealing element (53) releases the seal on the drain hole (51), so that the drain pipe (3) is connected to the outlet water passage B (14).

7. The water-driven mechanical switching device as described in claim 5, characterized in that: When the operating rod (5) disengages from the limiting groove (21), the drainage hole (51) connects the drainage pipe (3) and the water outlet path B (14). When the operating rod (5) falls into the limiting groove (21), the drainage hole (51) is closed.

8. The water-driven mechanical switching device as described in claim 5, characterized in that: The elastic clamping assembly includes a clamping spring (30), a limiting block (81) and a mounting block (82) are provided on the rotating shaft, the retaining baffle (2) is located between the limiting block (81) and the mounting block (82), one end of the clamping spring (30) abuts against the mounting block (82), and the other end abuts against the retaining baffle (2).

9. The water-driven mechanical switching device as described in claim 3, characterized in that: The manual button (9) is rotatably mounted on the mounting base (20) via the third rotating shaft (23). A reset spring (31) is provided between the manual button (9) and the mounting base (20). The mounting base (20) is provided with a sealed cavity (22) that communicates with the drain pipe (3). A sealing device (4) is installed in the sealed cavity (22). The sealing device (4) simultaneously seals the drain pipe (3) and seals the connection between the external air and the water outlet channel B (14). The drain pipe (3) and the water outlet channel B (14) are connected through a flow hole (8). One end of the operating rod (5) is rotatably connected to the manual button (9), and the other end is movably inserted into the flow hole (8) and seals the connection between the drain pipe (3) and the water outlet channel B (14).

10. The water-driven mechanical switching device as described in claim 7, characterized in that: The operating lever (5) has a drainage hole (51) at one end near the retaining baffle (2), and the drainage hole (51) has an inlet (52) on the side near the drainage tube (3). The inlet (52) can be opened or closed by moving the operating lever (5) up and down.

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