An energy storage device, a flushing system and a toilet

Abstract

The utility model discloses a kind of energy storage device, flushing system and closestool, energy storage device includes shell, piston, valve element, first elastic member and second elastic member, shell has water inlet, water outlet, first accommodating cavity and valve port, piston is sealed and isolated into energy storage cavity and balance cavity by first accommodating cavity, second accommodating cavity is equipped on piston, the inner wall of second accommodating cavity is equipped with first detent, cavity is formed in the inner wall of shell, cavity and the inner wall of shell form pressure holding chamber, first abutment and insertion part are equipped on valve element, second detent is equipped on insertion part, insertion part is inserted into second accommodating cavity, the upper end of valve element is equipped with water retaining part, water retaining part can increase the water area between pressure holding chamber and water outlet with valve element downward movement.The utility model uses water inlet pressure to compress first elastic member energy storage, and utilizes the movement of piston in the process of compressing first elastic member to link valve element movement, realizes energy storage and mechanical automatic release after energy storage is completed, solve the problem that flushing effect is not enough due to insufficient water inlet pressure.

Description

Technical Field

[0001] This utility model relates to the field of toilet technology, and in particular to an energy storage device, a flushing system and a toilet. Background Technology

[0002] In existing toilet flushing systems, the higher the water pressure and the greater the volume of water, the cleaner the toilet will be. To reduce the overall size of the toilet, some systems on the market directly use the water flow from the tap to flush it. However, when the tap water pressure is insufficient, the flushing force and volume are inadequate, resulting in an incomplete flush. To achieve effective flushing even with insufficient tap water pressure, energy storage devices have been developed to store and pressurize the incoming water flow. However, currently available energy storage devices all use piston compression springs to store energy. After energy storage is complete, a complex crankshaft and connecting rod indirectly activates an external back pressure valve located outside the energy storage chamber to open the valve and initiate automatic drainage. This design is complex, costly, and unstable, and there is a risk of pressure buildup and bursting if the linkage fails. Utility Model Content

[0003] The present invention aims to at least partially solve one of the aforementioned technical problems in the related art. To this end, the present invention proposes an energy storage device.

[0004] To achieve the above objectives, the technical solution of this utility model is as follows:

[0005] This utility model also proposes a flushing system with the above-mentioned energy storage device.

[0006] This utility model also proposes a toilet with the above-mentioned flushing system.

[0007] The energy storage device according to a first aspect embodiment of the present invention includes:

[0008] The housing has an inlet, an outlet, a first accommodating cavity, and a valve for connecting the first accommodating cavity and the outlet;

[0009] A piston is movably disposed within the first accommodating cavity. The piston forms a dynamic seal with the inner wall of the first accommodating cavity. The piston seals and isolates the first accommodating cavity into an energy storage cavity and a balance cavity. The energy storage cavity is connected to the water inlet. A second accommodating cavity is provided on the piston. The inner wall of the second accommodating cavity is provided with a first locking position.

[0010] The valve core has an internal cavity, which, together with the inner wall of the housing, forms a pressure-retaining chamber. A water inlet is located on the side wall of the cavity. The valve core has a first abutment portion and an insertion portion. The first abutment portion is located below the water inlet and above the insertion portion. The insertion portion has a second locking position, which is inserted into a second receiving cavity. The second locking position is located below the first locking position. The upper end of the valve core has a water-blocking portion, which can move with the valve core to change the water flow area between the pressure-retaining chamber and the water outlet.

[0011] The first elastic element is used to provide an upward elastic force to the piston. When the water inlet is not filled with water, the piston pushes the valve core upward so that the first abutting part blocks the valve port.

[0012] The second elastic element is used to provide a downward elastic force to the valve core, and the elastic force of the first elastic element is greater than the elastic force of the second elastic element;

[0013] When water enters through the inlet, the piston can move downwards. The valve core experiences an upward water pressure greater than the elastic force of the second elastic element, causing the valve core to remain sealed at the valve port. When the piston moves downwards to the point where the first locking position abuts against the second locking position, the combined force of the water pressure on the piston and the elastic force of the first elastic element is greater than the combined force of the water pressure on the valve core and the elastic force of the second elastic element. This causes the piston to pull the valve core downwards and open the valve port. Water flows into the pressure chamber and generates pressure under the water-blocking action of the water-blocking part. The combined force of this pressure and the elastic force of the second elastic element can drive the valve core to move downwards.

[0014] The energy storage device according to the embodiments of this utility model has at least the following beneficial effects:

[0015] 1. When water is introduced into the inlet for energy storage, the water flows into the energy storage chamber and overcomes the elastic force of the first elastic element to drive the piston to move downward. Under the action of water pressure in the energy storage chamber, the valve core remains sealed at the valve port until the piston moves to the first locking position and pushes down to the second locking position, causing the valve core to move downward and open the valve port. The water can flow into the pressure chamber through the valve port and the inlet and generate pressure under the action of the water blocking part. The combined force of this pressure and the second elastic element can drive the valve core to move downward, so that the water passage area between the pressure chamber and the outlet and the water inlet area of ​​the valve port increase simultaneously, and powerful drainage is carried out.

[0016] 2. This invention utilizes the inlet water pressure to compress the first elastic element for energy storage. The movement of the piston during compression of the first elastic element is linked to the movement of the valve core, achieving energy storage and automatic mechanical release upon completion. This solves the problem of insufficient flushing effect due to insufficient inlet water pressure. Compared to existing energy storage devices on the market, this invention achieves the same function without an external back pressure valve and crankshaft connecting rod mechanism. This invention has a simple structure, high stability, and the linkage mechanism that pulls the valve core to open the drainage also provides pressure relief protection, avoiding the risk of pressure buildup and bursting, ensuring high safety. The linkage mechanism between the piston and the valve core is built into the energy storage device housing, eliminating external leakage points and allowing for high future product scalability.

[0017] According to some embodiments of this utility model, the housing is provided with a third accommodating cavity, the water-blocking part is a hollow annular water-blocking plate, the top of the annular water-blocking plate is the outlet of the cavity, the annular water-blocking plate is embedded in the third accommodating cavity, the outer peripheral wall of the annular water-blocking plate is adapted to the side wall of the third accommodating cavity, a water passage is opened on the side wall of the third accommodating cavity, the water passage is connected to the water outlet, when the water inlet is not filled, the annular water-blocking plate seals the water passage, when the valve core is subjected to pressure and moves downward, the annular water-blocking plate moves downward with the valve core to open the water passage, and the water in the pressure-blocking cavity can flow to the water outlet through the water passage.

[0018] According to some embodiments of the present invention, the housing is provided with a fourth accommodating cavity, the fourth accommodating cavity is located below the third accommodating cavity and above the energy storage cavity, the valve port is located at the bottom of the fourth accommodating cavity, and when the water inlet is not in the water inlet state, the water inlet is located in the fourth accommodating cavity, and the water inlet is connected to the fourth accommodating cavity.

[0019] According to some embodiments of the present invention, the second elastic member is disposed in the pressure-holding cavity, the upper end of the second elastic member abuts against the inner wall of the housing, and the lower end of the second elastic member abuts against the bottom wall of the pressure-holding cavity.

[0020] According to some embodiments of this utility model, the valve core is provided with a second abutment portion, which is located between the first abutment portion and the insertion portion. When the water inlet is not filled with water, the piston abuts against the second abutment portion. The outer side of the fourth accommodating cavity is provided with a first guide groove, which is arranged in the vertical direction. The lower end of the first guide groove is provided with a third locking position. The valve core is provided with a limiting arm, the lower end of which is fixedly connected to the second abutment portion. The upper end of the limiting arm is provided with a fourth locking position. When the valve core moves downward, it can drive the fourth locking position to move along the first guide groove until the fourth locking position abuts against the third locking position.

[0021] According to some embodiments of the present invention, the inner wall of the second accommodating cavity is provided with a second guide groove, the second guide groove is arranged in the vertical direction, the first locking position is located at the upper end of the second guide groove, the second locking position is located at the lower end of the insertion part, and the second locking position can move along the second guide groove.

[0022] According to some embodiments of the present invention, the insertion part has a hollow cylindrical structure with water passage holes on its cylindrical wall, the second locking position is located at the lower end of the insertion part, the lower part of the cavity extends into the interior of the cylindrical part of the insertion part, and the second accommodating cavity is connected to the energy storage cavity.

[0023] According to some embodiments of the present invention, the piston includes a piston head and a piston rod. A sealing element is provided on the piston head, and the piston head forms a dynamic seal with the inner wall of the first accommodating cavity through the sealing element. The second accommodating cavity is disposed on the piston rod.

[0024] According to some embodiments of the present invention, the first elastic element is a spring, the first elastic element is sleeved on the piston rod, the upper end of the first elastic element abuts against the piston head, and the lower end of the first elastic element abuts against the bottom of the housing.

[0025] The flushing system according to a second aspect of the present invention includes the energy storage device.

[0026] A toilet according to a third aspect of the present invention includes the aforementioned flushing system.

[0027] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0028] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0029] Figure 1 This is an exploded view of the energy storage device of this utility model;

[0030] Figure 2 This is a top view of the energy storage device of this utility model;

[0031] Figure 3 This is an overall structural diagram of the valve core of this utility model;

[0032] Figure 4 This is a diagram of the internal structure of the piston of this utility model;

[0033] Figure 5 This is an internal structural diagram of the top cover of this utility model;

[0034] Figure 6 yes Figure 2 Cross-sectional view of AA (without water ingress);

[0035] Figure 7 yes Figure 2 Cross-sectional view of AA (in the state of water inlet storage);

[0036] Figure 8 yes Figure 2 Cross-sectional view of AA (water inlet and energy storage completed);

[0037] Figure 9 yes Figure 8 A magnified view of a section at point C;

[0038] Figure 10 yes Figure 2 Cross-sectional view of AA (drainage started).

[0039] Figure 11 yes Figure 2 Cross-sectional view of BB (drainage started).

[0040] Reference numerals: housing 100, inlet 110, outlet 120, valve port 130, first accommodating cavity 140, energy storage cavity 141, balancing cavity 142, main housing 150, top cover 160, third accommodating cavity 170, water passage 171, fourth accommodating cavity 180, first guide groove 190, third locking position 191, piston 200, second accommodating cavity 210, first locking position 211, second guide groove 212, piston head 220, piston rod 230, valve core 300, cavity 310, inlet 311, pressure-retaining cavity 320, first abutting part 330, insertion part 340, water passage hole 341, second locking position 350, water blocking part 360, second abutting part 370, limiting arm 380, fourth locking position 381, first elastic element 400, second elastic element 500. Detailed Implementation

[0041] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0042] In the description of this utility model, it should be understood that the terms "upper", "lower", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0043] Reference Figure 1-11 An energy storage device comprising:

[0044] The housing 100 has an inlet 110, an outlet 120, a first accommodating cavity 140, and a valve port 130 for connecting the first accommodating cavity 140 and the outlet 120; the housing 100 is composed of a main housing 150 and a top cover 160, the inlet 110, the outlet 120 and the valve port 130 are located on the top cover 160, and the first accommodating cavity 140 is located on the main housing 150;

[0045] Piston 200 is movably disposed in the first accommodating cavity 140. Piston 200 and the inner wall of the first accommodating cavity 140 form a dynamic seal. Piston 200 seals and isolates the first accommodating cavity 140 into an energy storage cavity 141 and a balance cavity 142. The energy storage cavity 141 is connected to the water inlet 110, and the balance cavity 142 is connected to the outside. Piston 200 is provided with a second accommodating cavity 210. The inner wall of the second accommodating cavity 210 is provided with a first locking position 211.

[0046] The valve core 300 has an internal cavity 310, which, together with the inner wall of the housing 100, forms a pressure-retaining cavity 320. The side wall of the cavity 310 has a water inlet 311. The valve core 300 has a first abutment part 330 and an insertion part 340. The first abutment part 330 is located below the water inlet 311 and above the insertion part 340. The first abutment part 330 is a sealing gasket structure and is arranged along the circumference of the valve core 300. The insertion part 340 has a second locking position 350. The insertion part 340 is inserted into the second receiving cavity 210, and the second locking position 350 is located below the first locking position 211. The upper end of the valve core 300 has a water-blocking part 360. The water-blocking part 360 can move with the valve core 300 to change the water passage area between the pressure-retaining cavity 320 and the water outlet 120.

[0047] The first elastic element 400 is used to provide an upward elastic force to the piston 200. When the water inlet 110 is not filled with water, the piston 200 pushes the valve core 300 upward so that the first abutting part 330 blocks the valve port 130.

[0048] The second elastic element 500 is used to provide a downward elastic force to the valve core 300, and the elastic force of the first elastic element 400 is greater than the elastic force of the second elastic element 500.

[0049] When water enters through inlet 110, piston 200 can move downwards. Valve core 300 is subjected to an upward water pressure greater than the elastic force of the second elastic element 500, keeping valve core 300 blocking valve port 130. When piston 200 moves downwards to the first locking position 211 abutting the second locking position 350, the combined force of the water pressure on piston 200 and the elastic force of the first elastic element 400 is greater than the combined force of the water pressure on valve core 300 and the elastic force of the second elastic element 500, causing piston 200 to pull valve core 300 downwards and open valve port 130. Water flows through valve port 130 and inlet 311 into pressure chamber 320 and generates pressure under the water blocking action of water blocking part 360. The combined force of this pressure and the elastic force of the second elastic element 500 can drive valve core 300 downwards, causing the water passage area between pressure chamber 320 and outlet 120 and the water inlet area of ​​valve port 130 to increase simultaneously. According to F=P*S, the water pressure on piston 200 and valve core 300 is related to the area of ​​force application. In this invention, the area of ​​piston 200 subjected to water pressure is greater than the area of ​​valve core 300 subjected to water pressure.

[0050] In some embodiments of this utility model, the housing 100 is provided with a third accommodating cavity 170, the water-blocking part 360 is a hollow annular water-blocking plate, the top of the annular water-blocking plate is the outlet of the cavity 310, the annular water-blocking plate is embedded in the third accommodating cavity 170, the outer peripheral wall of the annular water-blocking plate is adapted to the side wall of the third accommodating cavity 170, and a water outlet 171 is opened on the side wall of the third accommodating cavity 170. The water outlet 171 is connected to the water outlet 120. When the water inlet 110 is not filled with water, the annular water-blocking plate seals the water outlet 171. When the valve core 300 is subjected to pressure and moves downward, the annular water-blocking plate moves downward with the valve core 300 to open the water outlet 171, and the water in the pressure-blocking cavity 320 can flow to the water outlet 120 through the water outlet 171. The pressure is created by the cooperation between the water inlet 171 and the annular baffle plate. The pressure is used to realize the maximum stroke of the valve port 130 and the baffle part 360, so as to achieve a large flow flush. The structure is simple and reliable.

[0051] In some embodiments of this utility model, a fourth accommodating cavity 180 is provided inside the housing 100. The fourth accommodating cavity 180 is located below the third accommodating cavity 170 and above the energy storage cavity 141. The valve port 130 is located at the bottom of the fourth accommodating cavity 180. When the water inlet 110 is not filled with water, the water inlet 311 is located in the fourth accommodating cavity 180 and is connected to the fourth accommodating cavity 180.

[0052] In some embodiments of this utility model, the second elastic element 500 is disposed within the pressure-holding cavity 320, with its upper end abutting against the inner wall of the housing 100 and its lower end abutting against the bottom wall of the pressure-holding cavity 320. By placing the second elastic element 500 within the pressure-holding cavity 320, an additional elastic element mounting cavity is unnecessary, reducing the complexity of the internal structure of the housing 100 and making the overall design more compact.

[0053] In some embodiments of this utility model, the valve core 300 is provided with a second abutment portion 370, which is located between the first abutment portion 330 and the insertion portion 340. When the water inlet 110 is not filled with water, the piston 200 abuts against the second abutment portion 370. The outer side of the fourth accommodating cavity 180 is provided with a first guide groove 190, which is arranged in the vertical direction. The lower end of the first guide groove 190 is provided with a third locking position 191. The valve core 300 is provided with a limiting arm 380, the lower end of which is fixedly connected to the second abutment portion 370, and the upper end of which is provided with a fourth locking position 381. When the valve core 300 moves downward, it can drive the fourth locking position 381 to move along the first guide groove 190 until the fourth locking position 381 abuts against the third locking position 191. The third locking position 191 and the fourth locking position 381 can limit the maximum downward stroke of the valve core 300, ensuring the effective reset of the valve core 300.

[0054] In some embodiments of this utility model, the inner wall of the second accommodating cavity 210 is provided with a second guide groove 212, which is arranged in the vertical direction. The first locking position 211 is located at the upper end of the second guide groove 212, and the second locking position 350 is located at the lower end of the insertion part 340. The second locking position 350 can move along the second guide groove 212. The second guide groove 212 ensures that the valve core 300 and the piston 200 can only move vertically relative to each other, and cannot rotate relative to each other, thus preventing the first locking position 211 and the second locking position 350 from being misaligned in the vertical direction and unable to contact each other.

[0055] In some embodiments of this utility model, the insertion part 340 has a hollow cylindrical structure with a water passage hole 341 on its cylindrical wall. The second locking position 350 is located at the lower end of the insertion part 340. The lower part of the cavity 310 extends into the interior of the cylindrical body of the insertion part 340. The second receiving cavity 210 is connected to the energy storage cavity 141. After water enters through the water inlet 110, the water flows through the energy storage cavity 141 into the second receiving cavity 210. The water in the second receiving cavity 210 can enter the insertion part 340 through the water passage hole 341 and apply upward water pressure to the bottom wall of the cavity 310, so that the valve core 300 has a sufficient force-bearing area to withstand the water pressure, ensuring that the valve core 300 keeps the valve port 130 blocked when water is entering for energy storage.

[0056] In some embodiments of this utility model, the piston 200 includes a piston head 220 and a piston rod 230. The piston head 220 is provided with a sealing element, and the piston head 220 forms a dynamic seal with the inner wall of the first accommodating cavity 140 through the sealing element. The second accommodating cavity 210 is provided on the piston rod 230.

[0057] In some embodiments of this invention, the first elastic element 400 is a spring, which is sleeved on the piston rod 230. The upper end of the first elastic element 400 abuts against the piston head 220, and the lower end of the first elastic element 400 abuts against the bottom of the housing 100. The spring applies a spring force along the axial direction of the piston rod 230, ensuring that the force on the piston head 220 is evenly distributed, and avoiding tilting or jamming of the piston 200 due to eccentric force. This arrangement allows the spring force to act directly on the direction of movement of the piston 200, improving the efficiency of force transmission.

[0058] Working principle:

[0059] (1) No water intake state (refer to) Figure 6 ):

[0060] Because the elastic force F1 exerted by the first elastic element 400 on the piston 200 is greater than the elastic force F2 exerted by the second elastic element 500 on the valve core 300, the piston 200 will press the valve core 300 to keep the valve port 130 closed. At this time, the annular baffle completely blocks the water outlet 171.

[0061] (2) State during water inflow energy storage (refer to) Figure 7 ):

[0062] After water enters, piston 200 is subjected to the combined force of water pressure F3 and elastic force F1 of the first elastic element 400. Since F3 > F1, piston 200 begins to move downward to compress the first elastic element 400 and begin to store energy, and piston 200 no longer presses against valve core 300; at the same time, valve core 300 is subjected to the combined force of water pressure F4 and elastic force F2 of the second elastic element 500. Since F4 > F2, the combined force will keep valve port 130 in the closed state.

[0063] (3) Water inlet storage completed and start-up drainage status (refer to) Figure 8-11 ):

[0064] After the piston 200 moves down a certain distance, the first locking position 211 and the second locking position 350 come into contact. At this time, the valve core 300 is subjected to the combined force of four forces F1, F2, F3, and F4. Since F3-F1>F4-F2, the valve core 300 will follow the piston 200 to start moving down, causing the valve port 130 to start opening a certain stroke. However, at this time, the annular baffle plate still completely blocks the water outlet 171 (it can also not completely block it; a small gap can also generate pressure, as long as the water inlet area of ​​the valve port 130 is much larger than the water outlet area of ​​the gap). At this time, the high-pressure water in the energy storage chamber 141 flows into the pressure chamber 320 to form pressure, which increases the force on the valve core 300 by a downward pressure water pressure F5. Finally, the combined force will cause the valve core 300 to move down faster, further opening the valve port 130 and the water outlet 171, until the valve port 130 and the water outlet 171 are opened to the maximum stroke for powerful drainage. When the valve port 130 reaches its maximum stroke and drains water until F1>F3, the piston 200 moves upward to continue draining water until the valve core 300 is pressed up, causing the valve port 130 to close and reset.

[0065] A flushing system including the aforementioned energy storage device.

[0066] A toilet comprising the aforementioned flushing system.

[0067] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An energy storage device, characterized in that, include: The housing (100) has an inlet (110), an outlet (120), a first accommodating cavity (140), and a valve port (130) for connecting the first accommodating cavity (140) and the outlet (120); A piston (200) is movably disposed in the first accommodating cavity (140). The piston (200) forms a dynamic seal with the inner wall of the first accommodating cavity (140). The piston (200) seals and isolates the first accommodating cavity (140) into an energy storage cavity (141) and a balance cavity (142). The energy storage cavity (141) is connected to the water inlet (110). A second accommodating cavity (210) is provided on the piston (200). The inner wall of the second accommodating cavity (210) is provided with a first locking position (211). The valve core (300) has an internal cavity (310), which, together with the inner wall of the housing (100), forms a pressure-retaining cavity (320). An inlet (311) is located on the side wall of the cavity (310). The valve core (300) has a first abutment portion (330) and an insertion portion (340). The first abutment portion (330) is located below the inlet (311) and above the insertion portion (340). The inlet (340) is provided with a second locking position (350), the insertion part (340) is inserted into the second receiving cavity (210), and the second locking position (350) is located below the first locking position (211). The upper end of the valve core (300) is provided with a water-blocking part (360), and the water-blocking part (360) can increase the water passage area between the pressure chamber (320) and the outlet (120) as the valve core (300) moves downward. The first elastic element (400) is used to provide an upward elastic force to the piston (200). When the water inlet (110) is not filled with water, the piston (200) pushes the valve core (300) upward so that the first abutting part (330) blocks the valve port (130). The second elastic element (500) is used to provide a downward elastic force to the valve core (300), wherein the elastic force of the first elastic element (400) is greater than the elastic force of the second elastic element (500); When water enters through the inlet (110), the piston (200) can move downwards. The valve core (300) is subjected to an upward water pressure greater than the elastic force of the second elastic element (500), causing the valve core (300) to remain blocked at the valve port (130). When the piston (200) moves downwards to the point where the first locking position (211) abuts against the second locking position (350), the combined force of the water pressure on the piston (200) and the elastic force of the first elastic element (400) is greater than the combined force of the water pressure on the valve core (300) and the elastic force of the second elastic element (500), causing the piston (200) to pull the valve core (300) downwards and open the valve port (130). Water flows into the pressure chamber (320) and generates pressure under the water-blocking action of the water-blocking part (360). The combined force of this pressure and the elastic force of the second elastic element (500) can drive the valve core (300) to move downwards.

2. The energy storage device according to claim 1, characterized in that, The housing (100) has a third accommodating cavity (170). The water-blocking part (360) is a hollow annular water-blocking plate. The top of the annular water-blocking plate is the outlet of the cavity (310). The annular water-blocking plate is embedded in the third accommodating cavity (170). The outer peripheral wall of the annular water-blocking plate is adapted to the side wall of the third accommodating cavity (170). A water outlet (171) is opened on the side wall of the third accommodating cavity (170). The inlet (171) is connected to the outlet (120). When the inlet (110) is not filled with water, the annular baffle seals the inlet (171). When the valve core (300) moves downward due to pressure, the annular baffle moves downward with the valve core (300) to open the inlet (171). The water in the pressure chamber (320) can flow to the outlet (120) through the inlet (171).

3. The energy storage device according to claim 2, characterized in that, The housing (100) is provided with a fourth accommodating cavity (180), which is located below the third accommodating cavity (170) and above the energy storage cavity (141). The valve port (130) is located at the bottom of the fourth accommodating cavity (180). When the water inlet (110) is not filled with water, the water inlet (311) is located in the fourth accommodating cavity (180) and is connected to the fourth accommodating cavity (180).

4. The energy storage device according to claim 1, characterized in that, The second elastic element (500) is disposed in the pressure chamber (320), with the upper end of the second elastic element (500) abutting against the inner wall of the housing (100) and the lower end of the second elastic element (500) abutting against the bottom wall of the pressure chamber (320).

5. The energy storage device according to claim 3, characterized in that, The valve core (300) is provided with a second abutment portion (370), which is located between the first abutment portion (330) and the insertion portion (340). When the water inlet (110) is not filled with water, the piston (200) abuts against the second abutment portion (370). The fourth accommodating cavity (180) is provided with a first guide groove (190) on its outer side. The first guide groove (190) is arranged in the vertical direction. The lower end of the valve core (300) is provided with a third locking position (191), and the valve core (300) is provided with a limiting arm (380). The lower end of the limiting arm (380) is fixedly connected to the second abutment part (370), and the upper end of the limiting arm (380) is provided with a fourth locking position (381). When the valve core (300) moves downward, it can drive the fourth locking position (381) to move along the first guide groove (190) until the fourth locking position (381) abuts against the third locking position (191).

6. The energy storage device according to claim 1, characterized in that, The inner wall of the second accommodating cavity (210) is provided with a second guide groove (212), which is arranged in the vertical direction. The first locking position (211) is located at the upper end of the second guide groove (212), and the second locking position (350) is located at the lower end of the insertion part (340). The second locking position (350) can move along the second guide groove (212).

7. The energy storage device according to claim 1, characterized in that, The insertion part (340) has a hollow cylindrical structure with a water passage hole (341) on its cylindrical wall. The second locking position (350) is located at the lower end of the insertion part (340). The lower part of the cavity (310) extends into the interior of the cylindrical part (340). The second accommodating cavity (210) is connected to the energy storage cavity (141).

8. The energy storage device according to claim 1, characterized in that, The piston (200) includes a piston head (220) and a piston rod (230). The piston head (220) is provided with a sealing element. The piston head (220) forms a dynamic seal with the inner wall of the first accommodating cavity (140) through the sealing element. The second accommodating cavity (210) is located on the piston rod (230).

9. A flushing system, characterized in that, Includes the energy storage device according to any one of claims 1-8.

10. A toilet, characterized in that, Includes the flushing system as described in any one of claims 9.

Images