Mechanical switching device driven by water flow

Abstract

The water flow driven mechanical switching device comprises a valve body, a water inlet waterway, a water outlet waterway A and a water outlet waterway B which are sequentially communicated are arranged in the valve body, the water inlet waterway is communicated with a water inlet, a driving wheel is rotationally installed in the water outlet waterway A, the driving wheel is connected with a rotating shaft, and the rotating shaft is connected with a rotating shaft. The water outlet waterway B is communicated with a water outlet A and a water outlet B. A valve is arranged at the communication position of the water inlet waterway and the water outlet waterway B. A switching plate A used for blocking the water outlet A and a switching plate B used for blocking the water outlet B are connected to the rotating shaft. Through the opening time and the switching time of the water flow control valve, the flow of each water outlet and the overall water consumption can be controlled very accurately; and the mechanical structure is relatively simple, the control mode is simple, and the cost economy is remarkable.

Description

Technical Field

[0001] This invention relates to the technical field of waterway 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, the present invention proposes a water-driven mechanical switching device, comprising a valve body, wherein 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 mounted in the outlet water passage A and connected to a rotating shaft. The outlet water passage B is connected to an outlet A and an outlet B respectively. 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 invention are: 1. This invention 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 invention is relatively simple, the control method is simple, and it has significant cost-effectiveness; 3. In complex market usage environments and complex water usage environments, this invention has measures to prevent mechanical abnormal jamming. The valve can be closed by forcibly pressing the manual button, effectively preventing water leakage or valve failure. 4. This invention 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 buttons of this invention require 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 the present invention will be described in detail through embodiments and in conjunction with the accompanying drawings. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present invention; Figure 2 This is a left view of Embodiment 1 of the present invention; Figure 3 This is a front view of Embodiment 1 of the present invention; Figure 4 This is a schematic diagram of the AA cross-section of the present invention; 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 the present invention.

[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] Working process of this invention: 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 scope of protection of the present invention.

Claims

1. A water flow driven mechanical switching device, characterized by: The utility model provides a valve body (1), be equipped with the water inlet channel (12), water outlet channel A (13) and water outlet channel B (14) that communicate successively in valve body (1), the water inlet channel (12) is connected with water inlet (17), the water outlet channel A (13) is rotatably installed with drive wheel (6), the drive wheel (6) is connected with the pivot, the water outlet channel B (14) is connected with water outlet A (15) and water outlet B (16) respectively, and the water inlet channel (12) is equipped with valve (10) in the communication of water outlet channel B (14), and the pivot is connected with the switching plate A (72) for blocking water outlet A (15) and the switching plate B (73) for blocking water outlet B (16).

2. The water current powered mechanical switching device of claim 1, wherein: The valve (10) is opened and closed by the operating rod (5), the pivot is provided with a raised check ring, a limiting groove (21) is formed in the check ring, when the outer edge of the check ring contacts the operating rod (5), the valve (10) is opened, and during the rotation of the pivot, the outer edge of the check ring can continuously abut against the operating rod (5), so that the valve (10) is automatically kept in an open state, 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 current powered mechanical switching device of claim 2, wherein: The water inlet channel (12) and the water outlet channel A (13) are provided with a water supply chamber (11), a diaphragm (41) and a valve seat (40), the valve (10) comprises a drainage pipe (3), the water supply chamber (11) is connected with the drainage pipe (3), the drainage pipe (3) is sealed and separated from the water outlet channel B (14) through a sealing device (4), the sealing device (4) is movably installed with the operating rod (5), the valve body (1) is provided with a mounting seat (20), the mounting seat (20) is installed with a manual button (9), the manual button (9) is in transmission connection with the operating rod (5), the operating rod (5) can be separated from the limiting groove (21) by pressing the manual button (9), so that the valve (10) is opened.

4. The water current powered mechanical switching device of claim 2, wherein: The pivot comprises a first pivot (7) and a second pivot (71), the switching plate A (72) and the switching plate B (73) are radially staggered.

5. The water current powered mechanical switching device of claim 3, wherein: The pivot is provided with a retaining baffle (2), the pivot is relatively fixed to the retaining baffle (2) through an elastic compression assembly, the operating rod (5) is provided with a drainage hole (51), the retaining baffle (2) is provided with a check ring, and the outer edge of the check ring is a tapered surface.

6. The water current powered mechanical switching device of claim 3, wherein: The drainage pipe (3) is communicated with the water outlet channel B (14) through the drainage hole (51), the operating rod (5) is provided with a sealing element (53), the operating rod (5) and the sealing device (4) are provided with a return spring (31), when not under stress, the sealing element (53) is pressed and sealed to the drainage hole (51), when the manual button (9) is pressed, the operating rod (5) is moved, the sealing element (53) is unsealed to the drainage hole (51), so that the drainage pipe (3) is communicated with the water outlet channel B (14).

7. The water current powered mechanical switching device of claim 5, wherein: When the operating rod (5) is out of the limiting groove (21), the drainage hole (51) is in communication with the drainage tube (3) and the water outlet waterway B (14), and when the operating rod (5) falls into the limiting groove (21), the drainage hole (51) is closed.

8. The water current powered mechanical switching device of claim 5, wherein: The elastic compression assembly comprises a compression spring (30), the rotating shaft is provided with a limiting block (81) and a mounting block (82), the retaining baffle (2) is located between the limiting block (81) and the mounting block (82), one end of the compression spring (30) is in abutment with the mounting block (82), and the other end is in abutment with the retaining baffle (2).

9. The water current powered mechanical switching device of claim 3, wherein: The manual key (9) is rotatably installed on the mounting seat (20) through a third rotating shaft (23), a reset spring (31) is arranged between the manual key (9) and the mounting seat (20), the mounting seat (20) is provided with a sealing cavity (22) in communication with the drainage tube (3), the sealing device (4) is installed in the sealing cavity (22), the sealing device (4) simultaneously realizes sealing of the drainage tube (3) and sealing of the communication position of the external air and the water outlet waterway B (14), the drainage tube (3) and the water outlet waterway B (14) are in communication through a flow-through hole (8), one end of the operating rod (5) is rotatably connected with the manual key (9), the other end is movably inserted into the flow-through hole (8) and seals the communication position of the drainage tube (3) and the water outlet waterway B (14).

10. The water current powered mechanical switching device of claim 7, wherein: An end of the operating rod (5) close to the retaining baffle (2) is provided with a drainage hole (51), one side of the drainage hole (51) close to the drainage tube (3) is provided with an inlet (52), the inlet (52) realizes communication or sealing of the drainage tube (3) through up-down movement of the operating rod (5).

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