Pressurizing energy storage mechanism and closestool flushing device

Abstract

The invention discloses a pressurizing energy storage mechanism and a closestool flushing device, and the pressurizing energy storage mechanism comprises a body, an energy storage assembly, a first pilot valve, a second pilot valve, an outlet valve and the like. The body is provided with a hollow energy storage cavity, a delay cavity, a water inlet channel, a first water outlet channel and a second water outlet channel. The energy storage assembly comprises an energy storage piston and an energy storage elastic piece. The first pilot valve is arranged on the water inlet channel and used for controlling opening and closing of the water inlet channel. The second pilot valve is arranged on the first water outlet channel and used for controlling opening and closing of the first water outlet channel. The outlet valve controls opening and closing of the water outlet through the pressure difference between the inner side and the outer side of the outlet valve. After the first pilot valve is opened, the water inlet channel is controlled to supply water to the energy storage cavity, water storage and energy storage are conducted at the same time, after the energy storage cavity is full of water, the second pilot valve is opened, the energy storage cavity is controlled to supply water to the first water outlet channel, after the time delay effect of the time delay cavity, the outlet valve is finally opened, and the second water outlet channel is controlled to be opened in a time delay mode. Therefore, the two water paths can be pressurized in different time periods.

Description

Technical Field

[0001] The present invention relates to the technical field of kitchen and bathroom, and in particular to a pressure boosting energy storage mechanism and a toilet flushing device. Background Art

[0002] In the existing toilet flushing system, in order to enable effective flushing of the toilet even when the water pressure of tap water is insufficient, a method of pressurizing tap water by using a pump device has emerged on the market to increase the water pressure of the water flow. However, the use of a pump device has a high cost and requires power supply for the pump device, which is rather troublesome. Therefore, in the prior art, for example, in a Chinese invention patent with the publication number CN112376661B and the invention title "An energy storage device and a toilet flushing system having the same", an energy storage device is disclosed, which can store energy and pressurize the water flow by using a mechanical structure, thereby increasing the water pressure and water flow rate of the water flow flowing out of the water outlet, without the need for a pump device and without the need for power supply.

[0003] However, the energy storage device of the above prior art has a one-in-one-out design, that is to say, the energy storage device can only store energy and pressurize one waterway. Even if it is changed to a one-in-two-out structure, it can only store energy and pressurize two waterways simultaneously. When it is necessary to pressurize two waterways at different times, for example, in the use scenario of toilet flushing, generally, the upper flushing waterway of the toilet is first controlled to flush for a short period of time, and then the lower flushing waterway of the toilet is controlled to open and flush for a preset duration. At this time, the above existing energy storage device cannot be realized.

[0004] In view of this, how to provide an energy storage device controlled by a mechanical structure so that it can pressurize two waterways at different times is a technical problem to be solved in this field. Summary of the Invention

[0005] In order to solve the above technical problems, the present invention provides a pressure boosting energy storage mechanism and a toilet flushing device. The pressure boosting energy storage mechanism adopts a pure mechanical structure and can pressurize two waterways, namely a first water outlet channel and a second water outlet channel, at different times, with a clever concept and reliable function.

[0006] The technical solution adopted by the present invention is as follows: A pressure boosting energy storage mechanism, comprising: A body, the body is provided with a hollow energy storage cavity, a delay cavity, a water inlet channel, a first water outlet channel and a second water outlet channel. The energy storage cavity is provided with an inlet and outlet and an outlet. The inlet and outlet are respectively communicated with the water inlet channel and the first water outlet channel, and the outlet is communicated with the second water outlet channel through the delay cavity; Energy storage component, including an energy storage piston and an energy storage elastic member. After the water in the water inlet channel enters the energy storage cavity through the water inlet and outlet, the energy storage piston moves towards the bottom wall of the energy storage cavity under the action of water pressure, causing the energy storage elastic member to store energy; First pilot valve, provided on the water inlet channel for controlling the opening and closing of a first valve port provided on the water inlet channel. The first pilot valve includes a first back pressure chamber, a first pressure relief port, and a first water stop assembly that cooperates with the first valve port; Second pilot valve, provided on the first water outlet channel for controlling the opening and closing of a second valve port provided on the first water outlet channel. The second pilot valve includes a second back pressure chamber, a second pressure relief port, and a second water stop assembly that cooperates with the second valve port. The second pilot valve further includes a piston chamber provided on one side of the second pressure relief port and a piston that slides within the piston chamber. The piston cooperates with the second pressure relief port for opening and closing; Outlet valve, movably provided at the water outlet. The inner side of the outlet valve is located within the energy storage cavity, and the outer side of the outlet valve is located within the delay cavity. The outlet valve controls the opening and closing of the water outlet through the pressure difference between the inner and outer sides of the outlet valve; The first pressure relief port of the first pilot valve is communicated with the piston chamber. When the water flow in the first pressure relief port flows into the piston chamber, it can cause the piston to close the second pressure relief port under the action of water pressure; after the energy storage cavity is filled with water, the first pressure relief port closes and stops supplying water to the piston chamber, thereby causing the piston to lose the action of water pressure and open the second pressure relief port; After the second valve port is opened, a small part of the water flow enters the delay cavity to balance the pressure difference between the inside and outside of the outlet valve, thereby causing the outlet valve to open the water outlet.

[0007] In a preferred or alternative embodiment, a pressure relief control valve is further included. The pressure relief control valve controls the opening and closing of the first pressure relief port. The pressure relief control valve includes a hollow pressure relief valve seat and a pressure relief valve core movably provided within the pressure relief valve seat. The bottom of the pressure relief valve seat opens and closes the first pressure relief port. A flow passage is provided at the bottom of the pressure relief valve seat. The inner end of the flow passage is communicated with the first back pressure chamber. The pressure relief valve core cooperates with the outer end of the flow passage. When the pressure relief valve core opens the flow passage, the pressure relief valve seat opens the first pressure relief port under the action of water pressure.

[0008] In a preferred or alternative embodiment, a transmission mechanism is further included. The input end of the transmission mechanism is provided on the bottom wall of the energy storage cavity and is in linkage cooperation with the energy storage piston. The output end of the transmission mechanism is in linkage cooperation with the pressure relief valve seat. When the energy storage piston moves to the bottom wall of the energy storage cavity, the energy storage piston drives the pressure relief valve seat to close the first pressure relief port through the transmission mechanism.

[0009] In a preferred or optional embodiment, the transmission mechanism includes a swing rod swingably mounted on the bottom wall of the energy storage chamber, a top rod located outside the body, and a lifting rod rotatably mounted on the top of the body. The bottom end of the top rod is linked with one end of the swing rod, the top end of the top rod is linked with one end of the lifting rod, the other end of the swing rod is linked with the energy storage piston, and the other end of the lifting rod is linked with the pressure relief valve seat.

[0010] In a preferred or optional embodiment, the pressure relief control valve further includes a third elastic member and a fourth elastic member. The third elastic member is used to apply an elastic force to the pressure relief valve core to move it closer to the outer end of the flow passage; the fourth elastic member is used to apply an elastic force to the pressure relief valve seat to move it away from the first pressure relief port.

[0011] In a preferred or optional embodiment, the piston is provided with a flow through hole penetrating both sides of the piston, and the flow cross-sectional area of the flow through hole is smaller than the minimum flow cross-sectional area of the first pressure relief passage from the first pressure relief port to the piston chamber.

[0012] In a preferred or optional embodiment, the bottom wall of the piston chamber is provided with a second pressure relief passage, and the second pressure relief port is communicated with the first water outlet passage through the second pressure relief passage.

[0013] In a preferred or optional embodiment, it further includes a second elastic member, and the second elastic member applies an elastic force to the piston to move it away from the second pressure relief port.

[0014] In a preferred or optional embodiment, a delay check valve is provided at the water inlet and outlet. During the process that the energy storage piston squeezes the water in the energy storage chamber to flow out through the water inlet and outlet, the delay check valve delays closing the water inlet and outlet.

[0015] In a preferred or optional embodiment, the delay check valve includes a check valve disc and a screw rod connected to each other. The body is provided with a threaded portion that cooperates with the screw rod. When the check valve disc opens or closes the water inlet and outlet under the action of water pressure, the screw rod is in threaded cooperation with the threaded portion.

[0016] In a preferred or optional embodiment, a delay small hole is provided on the wall of the delay chamber, and the second valve port is communicated with the delay chamber through the delay small hole.

[0017] In a preferred or optional embodiment, a floating bucket capable of moving up and down is provided in the delay chamber, and the floating bucket closes the delay small hole after floating up under the action of buoyancy.

[0018] In a preferred or optional embodiment, the water pressure receiving area on the inner side of the outlet valve is larger than the water pressure receiving area on the outer side of the outlet valve.

[0019] In a preferred or alternative embodiment, a first elastic member is further included. The first elastic member applies an elastic force away from the water outlet to the outlet valve, and the sum of the elastic force of the first elastic member and the water pressure received on the outer side of the outlet valve is greater than the water pressure received on the inner side of the outlet valve.

[0020] In a preferred or alternative embodiment, the body includes a hollow energy storage tank and a main body covered at the top opening of the energy storage tank. The main body and the energy storage tank enclose the energy storage cavity. The delay cavity, the water inlet channel, the first water outlet channel, the second water outlet channel, the water inlet and outlet, the water outlet, the first pilot valve, the second pilot valve, and the outlet valve are all provided on the main body, and the energy storage assembly is provided in the energy storage tank.

[0021] In addition, the present invention further provides a toilet flushing device, which includes a toilet seat. The toilet seat is provided with an upper flushing port and a lower flushing port, and further includes the pressurizing energy storage mechanism described in any one of the above. The water inlet channel of the pressurizing energy storage mechanism is communicated with a water source, the first water outlet channel is communicated with the upper flushing port, and the second water outlet channel is communicated with the lower flushing port.

[0022] As can be seen from the above description of the present invention, the present invention has the following beneficial effects: In the pressurizing energy storage mechanism of the present invention, by providing the first pilot valve, the second pilot valve and the outlet valve, and arranging the first pilot valve on the water inlet channel to control the opening and closing of the water inlet channel, arranging the second pilot valve on the first water outlet channel to control the opening and closing of the first water outlet channel, and arranging the outlet valve at the water outlet, the opening and closing of the water outlet is controlled by the pressure difference between the inner side and the outer side of the outlet valve. The first pressure relief port of the first pilot valve is communicated with the piston cavity. When the water flow of the first pressure relief port flows into the piston cavity, the piston can be closed at the second pressure relief port under the action of water pressure. After the energy storage cavity is filled with water, the first pressure relief port is closed and the water supply to the piston cavity is stopped, so that the piston loses the action of water pressure and opens the second pressure relief port. After the second valve port is opened, a small part of the water flow enters the delay cavity to balance the pressure difference between the inside and the outside of the outlet valve, so that the outlet valve delays opening the water outlet, and thus the purpose of controlling the pressurization of the two water channels at different time periods by a pure mechanical structure is realized. The concept is ingenious and the function is reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings described herein are used to provide a further understanding of the present invention, and constitute a part of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention.

[0024] Wherein: Figure 1 is the axonometric view of the pressurizing energy storage mechanism of an embodiment of the present invention Figure 1 ; Figure 2 is the axonometric view of the supercharging energy storage mechanism according to an embodiment of the present invention Figure 2 ; Figure 3 is the axonometric view of the supercharging energy storage mechanism according to an embodiment of the present invention Figure 3 ; Figure 4 is the explosion view of the supercharging energy storage mechanism according to an embodiment of the present invention Figure 1 ; Figure 5 is the explosion view of the supercharging energy storage mechanism according to an embodiment of the present invention Figure 2 ; Figure 6 is the axonometric view of the main body according to an embodiment of the present invention Figure 1 ; Figure 7 is the axonometric view of the main body according to an embodiment of the present invention Figure 2 ; Figure 8 is the axonometric sectional view of the main body according to an embodiment of the present invention; Figure 9 is the partial axonometric view according to an embodiment of the present invention; Figure 10 is Figure 9 's sectional view (at this time, the lifting rod does not press down the pressure relief valve seat, and the first pressure relief port is in the open state); Figure 11 is Figure 9 's sectional view (at this time, the lifting rod is lifted and presses down the pressure relief valve seat, and the first pressure relief port is in the closed state); Figure 12 is the axonometric view of the second pilot valve according to an embodiment of the present invention; Figure 13 is the three-dimensional sectional view of the second pilot valve according to an embodiment of the present invention (the second elastic member is not shown); Figure 14 is the sectional view of the supercharging energy storage mechanism according to an embodiment of the present invention Figure 1 ; Figure 15 is the sectional view of the supercharging energy storage mechanism according to an embodiment of the present invention Figure 2 (the energy storage elastic member is not shown); Figure 16 is the sectional view of the supercharging energy storage mechanism according to an embodiment of the present invention Figure 3 (the energy storage elastic member is not shown); Figure 17 is one of the partial sectional views of the supercharging energy storage mechanism according to an embodiment of the present invention (the second elastic member is not shown); Figure 18 is the second partial sectional view of the supercharging energy storage mechanism according to an embodiment of the present invention; Figure 19Explosion diagram of the time-delay one-way valve according to an embodiment of the present invention; Figure 20 is the explosion of the pressure-boosting energy storage mechanism according to an embodiment of the present invention Figure 3 ; Figure 21 is the axonometric view of the pressure-boosting energy storage mechanism according to an embodiment of the present invention Figure 4 ; Figure 22 is the axonometric sectional view of the pressure-boosting energy storage mechanism according to an embodiment of the present invention; The reference numerals in the figure are respectively: 10 - body; 11 - energy storage tank; 12 - main body; 13 - energy storage cavity; 131 - water inlet and outlet; 1311 - time-delay one-way valve; 13111 - one-way valve disc; 13112 - screw; 132 - water outlet; 14 - time-delay cavity; 141 - time-delay small hole; 142 - floating bucket; 15 - water inlet channel; 151 - first valve port; 16 - first water outlet channel; 161 - second valve port; 17 - second water outlet channel; 18 - screwing part; 20 - energy storage assembly; 21 - energy storage piston; 22 - energy storage elastic member; 30 - first pilot valve; 31 - first back pressure cavity; 32 - first pressure relief port; 321 - first pressure relief channel; 33 - first water stop assembly; 40 - second pilot valve; 41 - second back pressure cavity; 42 - second pressure relief port; 43 - second water stop assembly; 44 - piston cavity; 441 - second pressure relief channel; 45 - piston; 451 - flow-through small hole; 452 - second elastic member; 50 - outlet valve; 51 - first elastic member; 60 - transmission mechanism; 61 - swing rod; 62 - ejector rod; 63 - lifting rod; 70 - pressure relief control valve; 71 - pressure relief valve seat; 711 - flow-through channel; 72 - pressure relief valve core; 73 - third elastic member; 74 - fourth elastic member. Detailed implementation manners

[0025] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer and more understandable, the present invention will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0026] Please refer to Figures 1 to 22 , a pressure-boosting energy storage mechanism according to a preferred embodiment of the present invention includes components such as a body 10, an energy storage assembly 20, a first pilot valve 30, a second pilot valve 40, and an outlet valve 50, wherein: The main body 10 is provided with a hollow energy storage cavity 13, a delay cavity 14, a water inlet channel 15, a first water outlet channel 16, and a second water outlet channel 17. The energy storage cavity 13 is provided with a water inlet and outlet 131 and a water outlet 132. The water inlet and outlet 131 is respectively communicated with the water inlet channel 15 and the first water outlet channel 16 (see Figure 8 shown), and the water outlet 132 is communicated with the second water outlet channel 17 through the delay cavity 14 (see Figure 14 and Figure 15 shown); The energy storage assembly 20 includes an energy storage piston 21 and an energy storage elastic member 22 (see Figure 14 ). After the water in the water inlet channel 15 enters the energy storage cavity 13 through the water inlet and outlet 131, the energy storage piston 21 moves towards the bottom wall of the energy storage cavity 13 under the action of water pressure, causing the energy storage elastic member 22 to store energy; The first pilot valve 30 is arranged on the water inlet channel 15 to control the opening and closing of the first valve port 151 provided on the water inlet channel 15. The first pilot valve 30 includes a first back pressure cavity 31, a first pressure relief port 32, and a first water stop assembly 33 that cooperates with the first valve port 151. After the first pressure relief port 32 of the first pilot valve 30 is opened for pressure relief, the first water stop assembly 33 can open the first valve port 151 under the action of water pressure. After the first pressure relief port 32 of the first pilot valve 30 is closed, the first water stop assembly 33 can close the first valve port 151 under the back pressure of the first back pressure cavity 31. This is the known principle of the pilot valve and will not be elaborated here; The second pilot valve 40 is arranged on the first water outlet channel 16 to control the opening and closing of the second valve port 161 provided on the first water outlet channel 16. The second pilot valve 40 includes a second back pressure cavity 41, a second pressure relief port 42, and a second water stop assembly 43 that cooperates with the second valve port 161. The second pilot valve 40 further includes a piston cavity 44 arranged on one side of the second pressure relief port 42 and a piston 45 that slides in the piston cavity 44. The piston 45 cooperates with the opening and closing of the second pressure relief port 42. After the second pressure relief port 42 of the second pilot valve 40 is opened for pressure relief, the second water stop assembly 43 can open the second valve port 161 under the action of water pressure. After the second pressure relief port 42 of the second pilot valve 40 is closed, the second water stop assembly 43 can close the second valve port 161 under the back pressure of the second back pressure cavity 41. This is the known principle of the pilot valve and will not be elaborated here; The outlet valve 50 is movably arranged at the water outlet 132. The inner side of the outlet valve 50 is located in the energy storage cavity 13, and the outer side of the outlet valve 50 is located in the delay cavity 14. The outlet valve 50 controls the opening and closing of the water outlet 132 through the pressure difference between the inner and outer sides of the outlet valve 50; The first pressure relief port 32 of the first pilot valve 30 passes through the first pressure relief channel 321 (see Figure 2 , Figure 3 , Figure 10 and Figure 11As shown in the figure, the piston chamber 44 is connected to the first pressure relief port 32. When the water flow from the first pressure relief port 32 flows into the piston chamber 44, the piston 45 can close the second pressure relief port 42 under the action of water pressure. After the energy storage chamber 13 is filled with water, the first pressure relief port 32 is closed and the water supply to the piston chamber 44 through the first pressure relief channel 321 is stopped, so that the piston 45 loses the water pressure and opens the second pressure relief port 42, thereby causing the second pilot valve 40 to open the second valve port 161. At this time, the water in the energy storage chamber 13 can flow out through the water inlet and outlet 131 and flow to the first water outlet channel 16, so that the first water outlet channel 16 can discharge water. After the second valve port 161 is opened, a small amount of water flows into the delay chamber 14. When the water in the delay chamber 14 is sufficient, the internal and external pressure difference of the outlet valve 50 can be balanced, so that the outlet valve 50 opens the water outlet 132. At this time, the water in the energy storage chamber 13 can flow out through the water outlet 132 and flow to the second water outlet channel 17, thereby achieving the purpose of delaying the opening of the second water outlet channel 17 compared to the first water outlet channel 16.

[0027] In this embodiment, a pressure relief control valve 70 is further included, and the pressure relief control valve 70 is used to control the opening and closing of the first pressure relief port 32. The pressure relief control valve 70 includes a hollow pressure relief valve seat 71 and a pressure relief valve core 72 movably disposed in the pressure relief valve seat 71. The bottom of the pressure relief valve seat 71 opens and closes the first pressure relief port 32, and the bottom of the pressure relief valve seat 71 is provided with a flow passage 711 (see Figure 14 and Figure 16 ), the inner end of the flow passage 711 is connected to the first back pressure chamber 31, the pressure relief valve core 72 cooperates with the outer end of the flow passage 711, and when the pressure relief valve core 72 opens the flow passage 711, the pressure relief valve seat 71 opens the first pressure relief port 32 under the action of water pressure. By setting the pressure relief control valve 70 in this way, combined with the transmission mechanism 60 described below, the first pressure relief port 32 is controlled to be closed after the energy storage chamber 13 is full of water, which has a simple structure, reliable control and ingenious design.

[0028] Specifically, in this embodiment, a transmission mechanism 60 is further included. The input end of the transmission mechanism 60 is arranged on the bottom wall of the energy storage chamber 13 and cooperates with the energy storage piston 21. The output end of the transmission mechanism 60 cooperates with the pressure relief valve seat 71. When the energy storage piston 21 moves to the bottom wall of the energy storage chamber 13, the energy storage piston 21 drives the pressure relief valve seat 71 to close the first pressure relief port 32 through the transmission mechanism 60.

[0029] Preferably, the transmission mechanism 60 includes a rocker rod 61 swingably mounted on the bottom wall of the energy storage chamber 13, a top rod 62 located on the outside of the main body 10, and a lifting rod 63 rotatably mounted on the top of the main body 10, the bottom end of the top rod 62 is linked to one end of the rocker rod 61, the top end of the top rod 62 is linked to one end of the lifting rod 63, the other end of the rocker rod 61 is linked to the energy storage piston 21, and the other end of the lifting rod 63 is linked to the pressure relief valve seat 71.

[0030] Preferably, referring to Figure 10 and Figure 11 , the pressure relief control valve 70 further includes a third elastic member 73 and a fourth elastic member 74. The third elastic member 73 is configured to apply an elastic force to the pressure relief valve core 72 towards the outer end of the flow passage 711; the fourth elastic member 74 is configured to apply an elastic force to the pressure relief valve seat 71 away from the first pressure relief port 32.

[0031] In this embodiment, a through-flow small hole 451 penetrating both sides of the piston 45 is provided on the piston 45. The through-flow cross-sectional area of the through-flow small hole 451 is smaller than the minimum through-flow cross-sectional area of the first pressure relief passage 321 from the first pressure relief port 32 to the piston chamber 44. With such a design, when the first pressure relief port 32 is opened and water is supplied to the piston chamber 44 through the first pressure relief passage 321, the through-flow small hole 451 is not fast enough to drain the water flow from the first pressure relief port 32, so that water pressure is formed in the piston chamber 44. Under the action of the formed water pressure, the piston 45 can be driven to move in the direction of closing the second pressure relief port 42, thereby ensuring that the second pilot valve 40 remains closed during the opening process of the first pilot valve 30. In this way, the water flow in the water inlet passage 15 can all enter the energy storage chamber 13 and will not flow out through the first water outlet passage 16.

[0032] In this embodiment, referring to Figure 17 , a second pressure relief passage 441 is provided on the bottom wall of the piston chamber 44. The second pressure relief port 42 is connected to the first water outlet passage 16 through the second pressure relief passage 441. With such a design, on the one hand, as shown by the dotted arrow in Figure 17 , the water flowing into the piston chamber 44 from the first pressure relief port 32 can flow through the through-flow small hole 451 and then flow out from the second pressure relief passage 441 to the first water outlet passage 16; on the other hand, in the state where the second pressure relief port 42 is opened, the water flowing into the piston chamber 44 from the second pressure relief port 42 can also flow from the second pressure relief passage 441 to the first water outlet passage 16 to achieve pressure relief.

[0033] In this embodiment, referring to Figure 4 , Figure 14 and Figure 15, further comprising a second elastic member 452. The second elastic member 452 applies an elastic force to the piston 45 away from the second pressure relief port 42. By designing the second elastic member 452, it can be ensured that in the state where the piston chamber 44 loses water pressure, the second elastic member 452 can drive the piston 45 to open the second pressure relief port 42 more promptly. Of course, it can be understood that the second elastic member 452 may not be provided. In this case, it can be designed to drive the piston 45 to open the second pressure relief port 42 only by the water pressure of the second pressure relief port 42, but in this way, the reliability is relatively low. Or, it can also be replaced by using the self-gravity of the piston 45 or the magnetic force of a magnetic attracting member (not shown) to drive the piston 45 to open the second pressure relief port 42, etc., as long as it can drive the piston 45 to open the second pressure relief port 42 when the water pressure in the piston chamber 44 disappears.

[0034] In this embodiment, referring to Figure 18 and Figure 19 , a delay check valve 1311 is provided at the water inlet / outlet 131. During the process of the energy storage piston 21 squeezing the water in the energy storage chamber 13 and flowing out through the water inlet / outlet 131, the delay check valve 1311 closes the water inlet / outlet 131 with a delay, so that after a certain amount of water in the energy storage chamber 13 flows out through the water inlet / outlet 131, it will no longer flow out through the water inlet / outlet 131.

[0035] Specifically, the delay check valve 1311 includes a check valve piece 13111 and a screw 13112 which are connected. The two are specifically connected by a clamping connection method. A screwing portion 18 matching with the screw 13112 is provided on the main body 10. The screw 13112 is provided with an external thread, and the screwing portion 18 is specifically a screw sleeve provided with an internal thread. When the check valve piece 13111 opens or closes the water inlet / outlet 131 under the action of water pressure, the screw 13112 is in threaded cooperation with the screwing portion 18, and a certain resistance formed during the threaded cooperation of the two is utilized to achieve the purpose of closing the water inlet / outlet 131 with a delay. In this embodiment, the threaded cooperation method is ingeniously adopted to achieve the delay purpose, with a simple structure and a reliable delay function.

[0036] In order to make the water flowing out through the opening of the second valve port 16 slowly enter the delay chamber 14, so that the water in the delay chamber 14 rises slowly to achieve the delay effect. In this embodiment, a delay small hole 141 is provided on the chamber wall of the delay chamber 14, and the second valve port 161 is communicated with the delay chamber 14 through the delay small hole 141. It can be understood that the aperture size of the delay small hole 141 defines the delay time for the second water outlet channel 17 to open compared with the first water outlet channel 16. The larger the aperture of the delay small hole 141, the shorter the delay time. On the contrary, the smaller the aperture of the delay small hole 141, the longer the delay time.

[0037] In order to prevent the water flow out of the water outlet 132 from flowing through the delay small hole 141 into the first water outlet channel 16 after the water outlet 132 is opened, in this embodiment, a floating bucket 142 capable of moving up and down is provided in the delay chamber 14. After the floating bucket 142 floats under the action of buoyancy, it closes the delay small hole 141. In this way, all the water flow out of the water outlet 132 will flow into the second water outlet channel 17.

[0038] In this embodiment, the water pressure receiving area on the inner side of the outlet valve 50 is larger than the water pressure receiving area on the outer side of the outlet valve 50. And it further includes a first elastic member 51, and the first elastic member 51 applies an elastic force to the outlet valve 50 away from the water outlet 132. The sum of this elastic force and the water pressure received on the outer side of the outlet valve 50 is greater than the water pressure received on the inner side of the outlet valve 50. In this way, it can ensure that the outlet valve 50 opens the water outlet 132 when both the inner and outer sides of the outlet valve 50 are under water pressure.

[0039] In this embodiment, the main body 10 includes a hollow energy storage tank 11 and a main body 12 covering the open top of the energy storage tank 11. The main body 12 and the energy storage tank 11 enclose an energy storage chamber 13. The delay chamber 14, the water inlet channel 15, the first water outlet channel 16, the second water outlet channel 17, the water inlet and outlet 131, the water outlet 132, the first pilot valve 30, the second pilot valve 40, and the outlet valve 50 are all provided on the main body 12, and the energy storage assembly 20 is provided in the energy storage tank 11. The main body 10 designed in this way has a more compact structure and is more convenient to assemble.

[0040] In addition, the present invention also provides a toilet flushing device, which includes a toilet seat (not shown), and the toilet seat is provided with an upper flushing port (not shown) and a lower flushing port (not shown). It further includes the pressurization and energy storage mechanism of any one of the above, the water inlet channel 15 of the pressurization and energy storage mechanism is communicated with a water source, the first water outlet channel 16 is communicated with the upper flushing port, and the second water outlet channel 17 is communicated with the lower flushing port.

[0041] For the toilet flushing device adopting the pressurization and energy storage mechanism of the present invention, during the flushing process, it can realize that the first water outlet channel 16 first supplies water to the upper flushing port for upper flushing. After a short delay, the first water outlet channel 16 stops supplying water, and then the second water outlet channel 17 starts to supply water to the lower flushing port for lower flushing, so as to meet the flushing requirements of the current toilet flushing device that needs to flush upward first and then downward.

[0042] The specific working process of this embodiment is briefly described as follows: First, refer to Figure 10, upwardly drive the pressure relief valve core 72. When the pressure relief valve core 72 opens the outer end of the flow passage 711, the pressure relief valve seat 71 moves upward under the action of water pressure to open the first pressure relief port 32. At this time, the driving force on the pressure relief valve core 72 can be released, and the pressure relief valve core 72 closes the outer end of the flow passage 711 again under the action of the third elastic member 73, while the pressure relief valve seat 71 can be maintained at the position of opening the first pressure relief port 32 under the action of water pressure and the elastic force of the fourth elastic member 74; After the first pressure relief port 32 is opened, the first water stop assembly 33 of the first pilot valve 30 opens the first valve port 151 under the action of water pressure, and the water flow in the water inlet passage 15 flows through the first valve port 151 to the downstream energy storage chamber 13, thereby driving the energy storage piston 21 in the energy storage chamber 13 to move towards the bottom wall of the energy storage chamber 13, and at the same time compressing the energy storage elastic member 22 for energy storage; meanwhile, the water flow discharged from the first pressure relief port 32 flows into the piston chamber 44 through the first pressure relief passage 321, so that a water pressure is formed in the piston chamber 44, and the piston 45 closes the second pressure relief port 42 under the action of water pressure, thereby closing the second pilot valve 40, that is, the second valve port 161 is in a closed state; Next, refer to Figure 14 , after the energy storage chamber 13 is filled with water, at this time, the energy storage piston 21 moves downward to the bottom of the energy storage chamber 13 and drives the swing rod 61 to swing. The outer end of the swing rod 61 then upwardly presses the ejector rod 62, and the ejector rod 62 then lifts one end of the lifting rod 63, and the other end of the lifting rod 63 presses down the pressure relief valve seat 71 (refer to Figure 11 ), so that the pressure relief valve seat 71 closes the first pressure relief port 32. After the first pressure relief port 32 of the first pilot valve 30 is closed, the first water stop assembly 33 closes the first valve port 151 under the back pressure of the first back pressure chamber 31. At this time, the water inlet passage 15 stops supplying water to the energy storage chamber 13. Meanwhile, due to the closing of the first pressure relief port 32, the first pressure relief port 32 stops supplying water to the piston chamber 44 through the first pressure relief passage 321, so that the piston 45 loses the action of water pressure and opens the second pressure relief port 42 under the elastic force of the second elastic member 452. After the second pressure relief port 42 is opened, the second water stop assembly 43 opens the second valve port 161 under the action of water pressure. At this time, the water in the energy storage chamber 13 flows out through the water inlet and outlet 131 and flows to the first water outlet passage 16, realizing the water outlet of the first water outlet passage 16, that is, the upper flushing port of the toilet seat starts to flush the inner wall of the toilet seat; During the process that the energy storage piston 21 extrudes the water in the energy storage cavity 13 to flow out through the water inlet / outlet 131 under the action of the energy storage elastic member 22, the check valve piece 13111 moves upward under the action of water pressure. At the same time, the check valve piece 13111 drives the screw 13112 to be in threaded engagement with the screwed portion 18. Since there will be a certain resistance when the screw 13112 is in threaded engagement with the screwed portion 18, the check valve piece 13111 can only move upward slowly, achieving the purpose of delaying the closing of the water inlet / outlet 131. After the check valve piece 13111 closes the water inlet / outlet 131, the first water outlet channel 16 stops discharging water, and thus the upper flushing of the toilet ends.

[0043] After the second valve port 161 is opened, a small part of the water flow will enter the delay cavity 14 through the delay small hole 141. When the water in the delay cavity 14 is sufficient, the internal and external pressure differences of the outlet valve 50 can be balanced, so that the outlet valve 50 opens the water outlet 132. At this time, the water in the energy storage cavity 13 flows out through the water outlet 132 and flows to the second water outlet channel 17, achieving the purpose that the second water outlet channel 17 is opened with a delay compared to the first water outlet channel 16, and enabling the lower flushing port of the toilet seat to start flushing the bottom of the toilet seat. Preferably, it is designed that the outlet valve 50 opens the water outlet 132 while or shortly after the delay check valve 1311 closes the water inlet / outlet 131, so as to ensure that there is sufficient water flow flowing into the delay cavity 14 to smoothly open the outlet valve 50.

[0044] Finally, after the water in the energy storage cavity 13 is emptied, the energy storage piston 21 moves upward and resets under the action of the energy storage elastic member 22, and the first pilot valve 30, the second pilot valve 40 and the outlet valve 50 also all return to the initial state, preparing for the next flushing.

[0045] The pressure boosting and energy storage mechanism of the present invention, by providing the first pilot valve, the second pilot valve and the outlet valve, and arranging the first pilot valve on the water inlet channel to control the opening and closing of the water inlet channel, arranging the second pilot valve on the first water outlet channel to control the opening and closing of the first water outlet channel, arranging the outlet valve at the water outlet, and using the pressure difference between the inner side and the outer side of the outlet valve to control the opening and closing of the water outlet, the first pressure relief port of the first pilot valve is communicated with the piston cavity. When the water flow of the first pressure relief port flows into the piston cavity, the piston can be made to close the second pressure relief port under the action of water pressure. After the energy storage cavity is filled with water, the first pressure relief port is closed and the water supply to the piston cavity stops, so that the piston loses the action of water pressure and opens the second pressure relief port. After the second valve port is opened, a small part of the water flow enters the delay cavity to balance the internal and external pressure differences of the outlet valve, so that the outlet valve delays opening the water outlet, and further realizes the purpose of controlling the pressurization of two water channels in different time periods by a pure mechanical structure, with ingenious conception and reliable function.

[0046] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It 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.

[0047] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0048] In the present invention, unless otherwise clearly specified and defined, the terms "mounted", "connected", "coupled", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, an electrical connection, or communicable with each other; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly defined. 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 circumstances.

[0049] In the present invention, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0050] In the present invention, terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0051] Although the above embodiments have been shown and described, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Variations, modifications, substitutions, and alterations made by those of ordinary skill in the art to the above embodiments are all within the scope of protection of the present invention.

Claims

1. A pressurized energy storage mechanism, characterized in that: include: A body, wherein the body is provided with a hollow energy storage cavity, a time delay cavity, a water inlet channel, a first water outlet channel, and a second water outlet channel, the energy storage cavity is provided with a water inlet and a water outlet, the water inlet and the water outlet are respectively connected with the water inlet channel and the first water outlet channel, and the water outlet is connected with the second water outlet channel through the time delay cavity; The energy storage assembly comprises an energy storage piston and an energy storage elastic member. After the water in the water inlet channel enters the energy storage cavity through the water inlet and outlet, the energy storage piston moves toward the bottom wall of the energy storage cavity under the action of water pressure and enables the energy storage elastic member to store energy. A first pilot valve, provided on the water inlet channel, for controlling the opening and closing of a first valve port provided on the water inlet channel, the first pilot valve comprising a first back pressure chamber, a first pressure relief port and a first water stop assembly matched with the first valve port; A second pilot valve is provided on the first water outlet channel and is used to control the opening and closing of a second valve port provided on the first water outlet channel. The second pilot valve includes a second back pressure chamber, a second pressure relief port, and a second water stop assembly matched with the second valve port. The second pilot valve also includes a piston chamber provided on one side of the second pressure relief port and a piston sliding in the piston chamber. The piston cooperates with the second pressure relief port in opening and closing. An outlet valve is movably arranged at the water outlet, the inner side of the outlet valve is located at the energy storage chamber, the outer side of the outlet valve is located at the delay chamber, and the outlet valve controls the opening and closing of the water outlet through the pressure difference between the inner side and the outer side of the outlet valve; The first pressure relief port of the first pilot valve is in communication with the piston chamber. When water from the first pressure relief port flows into the piston chamber, the piston can close the second pressure relief port under the action of water pressure. After the energy storage chamber is filled with water, the first pressure relief port is closed and water supply to the piston chamber is stopped, thereby causing the piston to lose the action of water pressure and open the second pressure relief port. After the second valve port is opened, a small portion of water flows into the delay chamber to balance the internal and external pressure difference of the outlet valve, thereby causing the outlet valve to open the water outlet.

2. The pressurized energy storage mechanism according to claim 1, characterized in that: It also includes a pressure relief control valve, which controls the opening and closing of the first pressure relief port. The pressure relief control valve includes a hollow pressure relief valve seat and a pressure relief valve core movably arranged in the pressure relief valve seat. The bottom of the pressure relief valve seat opens and closes the first pressure relief port. A flow channel is provided at the bottom of the pressure relief valve seat. The inner end of the flow channel is connected to the first back pressure chamber. The pressure relief valve core cooperates with the outer end of the flow channel. When the pressure relief valve core opens the flow channel, the pressure relief valve seat opens the first pressure relief port under the action of water pressure.

3. The pressurized energy storage mechanism according to claim 2, characterized in that: It also includes a transmission mechanism, wherein the input end of the transmission mechanism is arranged on the bottom wall of the energy storage chamber and cooperates with the energy storage piston, and the output end of the transmission mechanism cooperates with the pressure relief valve seat. When the energy storage piston moves to the bottom wall of the energy storage chamber, the energy storage piston drives the pressure relief valve seat to close the first pressure relief port through the transmission mechanism.

4. The pressurized energy storage mechanism according to claim 3, characterized in that: The transmission mechanism includes a rocker arm swingably mounted on the bottom wall of the energy storage chamber, a push rod located outside the main body, and a lifting rod rotatably mounted on the top of the main body, the bottom end of the push rod is linked to one end of the rocker arm, the top end of the push rod is linked to one end of the lifting rod, the other end of the rocker arm is linked to the energy storage piston, and the other end of the lifting rod is linked to the pressure relief valve seat.

5. The pressurized energy storage mechanism according to claim 2, characterized in that: The pressure relief control valve also includes a third elastic member and a fourth elastic member, wherein the third elastic member is used to apply an elastic force to the pressure relief valve core close to the outer end of the flow channel; and the fourth elastic member is used to apply an elastic force to the pressure relief valve seat away from the first pressure relief port.

6. The pressurized energy storage mechanism according to claim 1, characterized in that: The piston is provided with a flow hole penetrating through both sides of the piston, and the flow cross-sectional area of ​​the flow hole is smaller than the minimum flow cross-sectional area of ​​the first pressure relief channel from the first pressure relief port to the piston cavity.

7. The pressurized energy storage mechanism according to claim 6, characterized in that: The bottom wall of the piston chamber is provided with a second pressure relief channel, and the second pressure relief port is connected with the first water outlet channel through the second pressure relief channel.

8. The pressurized energy storage mechanism according to claim 1, characterized in that: It also includes a second elastic member, which applies an elastic force to the piston away from the second pressure relief port.

9. The pressurized energy storage mechanism according to claim 1, characterized in that: A time-delay one-way valve is provided at the water inlet and outlet. When the energy storage piston squeezes the water in the energy storage cavity to flow out through the water inlet and outlet, the time-delay one-way valve delays closing the water inlet and outlet.

10. The pressurized energy storage mechanism according to claim 9, characterized in that: The time-delay one-way valve comprises a one-way valve plate and a screw rod connected to each other. The main body is provided with a screw connection part matched with the screw rod. When the one-way valve plate opens or closes the water inlet and outlet under the action of water pressure, the screw rod is threadedly matched with the screw connection part.

11. The pressurized energy storage mechanism according to claim 1, characterized in that: A delay hole is provided on the cavity wall of the delay cavity, and the second valve port is communicated with the delay cavity through the delay hole.

12. The pressurized energy storage mechanism according to claim 11, characterized in that: A floating barrel capable of moving up and down is arranged in the delay chamber, and the delay hole is closed after the floating barrel floats up under the action of buoyancy.

13. The pressurized energy storage mechanism according to claim 1, characterized in that: The water pressure receiving area on the inner side of the outlet valve is larger than the water pressure receiving area on the outer side of the outlet valve.

14. The pressurized energy storage mechanism according to claim 13, characterized in that: It also includes a first elastic member, which applies an elastic force to the outlet valve away from the water outlet, and the sum of the elastic force of the first elastic member and the water pressure on the outer side of the outlet valve is greater than the water pressure on the inner side of the outlet valve.

15. The pressurized energy storage mechanism according to claim 1, characterized in that: The main body includes a hollow energy storage tank and a main body covered with an open top end of the energy storage tank. The main body and the energy storage tank form the energy storage cavity. The delay cavity, the water inlet channel, the first water outlet channel, the second water outlet channel, the water inlet and outlet, the water outlet, the first pilot valve, the second pilot valve, and the outlet valve are all arranged on the main body, and the energy storage assembly is arranged in the energy storage tank.

16. A toilet flushing device, comprising a toilet seat, wherein the toilet seat is provided with an upper flushing port and a lower flushing port, wherein: It also includes the pressurized energy storage mechanism as described in any one of claims 1 to 15, wherein the water inlet channel of the pressurized energy storage mechanism is connected to a water source, the first water outlet channel is connected to the upper flushing port, and the second water outlet channel is connected to the lower flushing port.

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