Mechanical delay device

Abstract

The invention discloses a mechanical delay device which can realize an automatic flushing function of a closestool without electric drive and comprises a shell, a hydraulic assembly, a first sliding block, a first spring, a movable assembly and a second spring, the hydraulic assembly is provided with a telescopic piston rod; the two ends of the first sliding block are matched with the piston rod and the first spring respectively; the movable assembly and the first sliding block are in parallel sliding fit in the shell, and the opposite faces of the movable assembly and the first sliding block are provided with a first clamping hook and a second clamping hook. The second spring is arranged in the shell and acts on the movable assembly; when the piston rod is hydraulically driven and extends out, the first sliding block is pushed to move and compress the first spring, so that the first spring stores energy; when the piston rod is not hydraulically driven, the first spring releases stored energy to push the piston rod to retract and drive the first sliding block to reset, and then the first clamping hook buckles the second clamping hook to drive the movable assembly to slide and compress the second spring. When the second clamping hook and the first clamping hook are unhooked, stored energy of the second spring is released so as to push the movable assembly to reset.

Description

Technical Field

[0001] The present invention belongs to the technical field of sanitary equipment, and particularly relates to a mechanical delay device. Background Art

[0002] In daily life, after people use the toilet, they usually need to manually press the flush button to remove the dirt in the toilet bowl. The intelligent toilet can sense the user's departure from the seat through a preset circuit board program and automatically activate the solenoid valve flushing system, realizing automatic flushing without manual operation, which greatly improves the convenience of use.

[0003] However, these automatic flushing systems rely on electric drive. Once the battery runs out (for battery - built - in type) or there is a power outage (for plug - in type), the automatic flushing function cannot be executed, and the use is restricted. In addition, although the technology of intelligent toilets is becoming increasingly mature, it has not been widely popularized. Most families still use traditional toilets. If they want to upgrade to an intelligent toilet with an automatic flushing function, they will face relatively high renovation costs, which to a certain extent hinders the popularization of intelligent toilets. Summary of the Invention

[0004] The purpose of the present invention is to provide a mechanical delay device, which solves the problems existing in the prior art. Without relying on electric drive, it can realize the automatic flushing function of the toilet, meet the needs of specific application scenarios, and thus improve the user experience.

[0005] To achieve the above object, the solution of the present invention is: A mechanical delay device includes a housing, a hydraulic component, a first slider, a first spring, a movable component and a second spring; the hydraulic component has a piston rod that expands and contracts under hydraulic drive; the first slider is slidably fitted in the housing, and its two ends are respectively fitted with the piston rod and the first spring; the movable component is slidably fitted in the housing side by side with the first slider, and a first hook and a second hook are provided on their opposite surfaces; the second spring is arranged in the housing and acts on the movable component; when the piston rod is driven by hydraulic pressure and extends, it pushes the first slider to move and compress the first spring, so that the first spring stores energy; when the piston rod is not driven by hydraulic pressure, the first spring releases the stored energy to push the piston rod to retract and drive the first slider to reset, and then hooks the second hook through the first hook to drive the movable component to slide and compress the second spring. At this time, the movable component serves as the power output mechanism of the mechanical delay device; when the second hook is disengaged from the first hook, the stored energy of the second spring is released to push the movable component to reset.

[0006] The hydraulic assembly also includes a water bag, a valve body, a piston seat and a diaphragm; the water bag is arranged on the bottom surface of the toilet seat; the two ends of the valve body are respectively connected to the water bag and the piston seat; the diaphragm is arranged at the connection between the piston seat and the valve body; the piston rod is movably passed through the piston seat and abuts the diaphragm.

[0007] Preferably, the hydraulic assembly also includes a three-way adapter, a one-way valve and a connecting pipe; the three-way adapter is connected between the valve body and the water bag; the one-way valve is arranged in the valve body; the two ends of the connecting pipe are respectively connected to the three-way adapter and the valve body and connected to the two sides of the one-way valve; the cross-sectional area of the connecting pipe is smaller than the cross-sectional area of the valve body.

[0008] The movable component includes a second slider that slides in the shell and a pendulum block pivotally connected to the second slider; the second slider is provided with an output rod that passes through the shell to output power; the second hook is provided on the opposite side of the pendulum block and the first slider; the two ends of the second spring respectively abut the inner wall of the shell and the pendulum block.

[0009] Preferably, the mechanical delay device is further provided with a pressure block and a third spring; the pressure block is slidably fitted in the outer shell and is opposite to the end of the pendulum block away from the second slider, and the pressure block and the first slider are respectively located on both sides of the pendulum block; the third spring is arranged between the inner wall of the outer shell and the pressure block so that the pressure block abuts against the end side of the pendulum block.

[0010] Preferably, a third sliding groove for assembling the pressure block and the third spring is provided in the housing, which is used to limit the sliding position of the pressure block, and the pressure block is provided with a pressure rod passing through the third sliding groove and abutting against the side of the pendulum block.

[0011] Preferably, a guide slope is provided on the side of the pendulum block away from the end of the second slider and opposite to the first slider, and a slope opposite to the guide slope is provided on the inner wall of the shell; when the second slider and the pendulum block are driven by the first slider and the second spring is compressed, the guide slope contacts the slope and drives the pendulum block to swing, thereby causing the second hook to disengage from the first hook.

[0012] The movable component is in transmission connection with the mechanical flushing mechanism of the toilet. When the movable component is pushed by the first slider, it outputs power so that the mechanical flushing mechanism of the toilet is turned on.

[0013] Preferably, the mechanical flushing mechanism is a pilot valve, and the output rod of the movable assembly acts on the sealing diaphragm of the pilot valve to change the state of the sealing diaphragm: when the output rod retracts, the sealing diaphragm is in an open state; when the output rod extends, the sealing diaphragm is in a closed state. Alternatively, the mechanical flushing mechanism includes a pull rope and a drain valve, and two ends of the pull rope are respectively connected to the movable assembly and the water stop plug of the drain valve.

[0014] After adopting the above technical solution, the present invention has the following technical effects: (1) Through the hydraulic component, the present invention can convert the pressure applied by the user into the power of the first slider, and the hooking and unhooking states between the first hook of the first slider and the second hook of the movable assembly can achieve the linkage and separation of the two. Moreover, the first slider and the movable assembly are respectively provided with springs for driving and resetting, thereby constituting a complete delay driving logic.

[0015] (2) The mechanical delay device of the present invention can be installed on any type of toilet for transformation or upgrading, and the power output by the movable assembly is linked with the mechanical flushing mechanism of the toilet to automatically open the drain port of the water tank / water bag, realizing automatic drainage and flushing after the user finishes using the toilet and leaves the seat.

[0016] (3) The present invention is a design with a pure mechanical structure, which does not require electric drive, is convenient to use, and at the same time has a simple structure and low cost, facilitating market promotion.

[0017] (4) The present invention can also adjust the duration before the first hook and the second hook come into contact during the reset process of the first slider by adjusting the positions of the first hook and the second hook on the corresponding parts and the coefficients of the respective springs, thereby realizing the adjustment of the delay duration of the delayed flushing, with higher flexibility. Description of the Drawings

[0018] Figure 1 It is an exploded view of the first embodiment of the present invention.

[0019] Figure 2 It is a schematic diagram of the standby state of the first embodiment of the present invention.

[0020] Figure 3 It is a schematic diagram of the state when a person sits on the seat in the first embodiment of the present invention.

[0021] Figure 4 It is a schematic diagram of the pressure package in the open state in the first embodiment of the present invention.

[0022] Figure 5 It is a schematic diagram of the state where the swing block is about to unhook in the first embodiment of the present invention.

[0023] Figure 6Schematic structural diagram of the second embodiment of the present invention.

[0024] Explanation of the reference numerals in the drawings: 1 - Hydraulic component; 11 - Piston rod; 12 - Water bag; 13 - Valve body; 14 - Piston seat; 15 - Diaphragm; 16 - Three-way adapter; 17 - Check valve; 18 - Connecting pipe; 2 - First slider; 21 - First hook; 22 - First spring chamber; 3 - First spring; 4 - Second spring; 5 - Upper shell; 6 - Lower shell; 61 - First chute; 611 - First positioning post; 62 - Second chute; 621 - Second positioning post; 622 - Ramp; 7 - Second slider; 71 - Output rod; 8 - Swing block; 81 - Second hook; 82 - Second spring chamber; 83 - Guide slope; 9 - Pressing block; 91 - Pressing rod; 10 - Third spring; 20 - Pilot valve; 201 - Sealing diaphragm; 30 - Pulling rope; 40 - Drain valve; 401 - Water stop plug. Detailed implementation manners

[0025] In order to further explain the technical solution of the present invention, the present invention will be elaborated in detail through specific embodiments below.

[0026] Referring to Figures 1-6 As shown, the present invention discloses a mechanical delay device, including a housing, a hydraulic component 1, a first slider 2, a first spring 3, a movable component and a second spring 4; The housing is the housing part of the mechanical delay device, generally immovable after installation, and is used to cooperate with other components of the mechanical delay device to achieve assembly; The hydraulic component 1 outputs power or returns to the standby state under the change of external pressure, and it has a piston rod 11 that expands and contracts under hydraulic drive; The first slider 2 is slidably fitted in the housing, and its two ends are respectively fitted with the piston rod 11 and the first spring 3; The movable component is slidably fitted in the housing side by side with the first slider 2, and a first hook 21 and a second hook 81 are provided on the opposite surfaces of the two; the second spring 4 is arranged in the housing and acts on the movable component; When the piston rod 11 is driven by hydraulic pressure and extends, it pushes the first slider 2 to move and compress the first spring 3, so that the first spring 3 stores energy; when the piston rod 11 is not driven by hydraulic pressure, the first spring 4 releases the stored energy to push the piston rod 11 to retract and drive the first slider 2 to reset, and then drives the movable component to slide and compress the second spring 4 by hooking the second hook 81 with the first hook 21. At this time, the movable component serves as the power output mechanism of the mechanical delay device; when the second hook 81 is disengaged from the first hook 21, the stored energy of the second spring 4 is released to push the movable component to reset.

[0027] Through the above solution, the present invention can convert the pressure applied by the user into the power of the first slider 2 through the hydraulic component 1. The hooking and unhooking states between the first hook 21 of the first slider 2 and the second hook 81 of the movable component can achieve the linkage and separation of the two. Moreover, the first slider 2 and the movable component are respectively provided with springs for driving and resetting, thus constituting a complete delay driving logic: Refer to Figures 2-5 As shown, when the pressure-receiving end of the hydraulic component 1 is set at a certain position of the toilet, such as on the toilet seat ring, when the user sits down, the hydraulic pressure can be converted into the energy storage of the first spring 3. When the user gets up, the energy storage of the first spring 3 is released, and the movable component can be driven to output power outward through the first hook 21 and the second hook 81, thereby driving the mechanical flushing mechanism of the toilet to be linked, achieving the purpose of automatic flushing after the user gets up. After the movable component is driven by the first slider 2 to slide a certain distance, the second hook 81 is disengaged from the first hook 21, and the movable component is reset under the drive of the second spring 4, thereby driving the mechanical flushing mechanism of the toilet to be linked and closed, completing the entire automatic flushing action process. According to the above action process, the mechanical delay device of the present invention can be installed on any type of toilet (ordinary or intelligent) for transformation or upgrading, and the power output by the movable component is linked with the mechanical flushing mechanism of the toilet to realize the automatic opening of the drain port of the water tank / water bag, and automatic drainage and flushing are realized after the user finishes using the toilet and gets up. At the same time, the present invention is a pure mechanical structure design, which does not require electric drive, is convenient to use, has a simple structure and low cost, and is easy to promote in the market. In addition, the present invention can also adjust the position of the first hook 21 and the second hook 81 on the corresponding parts and the coefficients of the springs to adjust the duration before the first hook 21 contacts the second hook 81 during the reset process of the first slider 2, and further adjust the delay duration of the delayed flushing, with higher flexibility.

[0028] The following shows specific embodiments of the present invention.

[0029] The above shell includes an upper shell 5 and a lower shell 6 assembled by detachable means such as snap connection, which is convenient for processing and forming a groove structure for other parts to cooperate with, and is easier to assemble.

[0030] The above shell is provided with a first chute 61 and a second chute 62 for the first slider 2 and the movable component to slide and cooperate respectively. The first chute 61 and the second chute 62 are juxtaposed and communicated.

[0031] Further, a first positioning post 611 is provided at the end face of the first chute 61. A first spring cavity 22 is provided inside the first slider 2. The two ends of the first spring 3 are respectively matched with the first positioning post 611 and the first spring cavity 22 to realize the positioning cooperation of the two ends of the first spring 3 and ensure the position stability of the first spring 3.

[0032] The above-mentioned hydraulic component 1 further includes a water bag 12, a valve body 13, a piston seat 14, and a diaphragm 15; the water bag 12 can be arranged at the position required by the user, preferably on the bottom surface of the toilet seat ring. In this way, when the user sits on the toilet during the toilet use process, pressure will be naturally applied to the water bag 12, thereby starting the mechanical delay device. Without deliberate operation, it can give the user an "automatic" experience; both ends of the valve body 13 are respectively communicated with the water bag 12 and the piston seat 14; the diaphragm 15 is arranged at the communication position between the piston seat 14 and the valve body 13; the piston rod 11 movably passes through the piston seat 14 and abuts against the diaphragm 15. Thus, when the user sits down and the water bag 12 is pressurized, the water inside it is squeezed out, increasing the pressure inside the valve body 13. The pressure acts on the diaphragm 15 and pushes the piston rod 11 to extend through the diaphragm 15; when the user leaves the seat, the water bag 12 is no longer pressurized, the thrust received by the piston rod 11 decreases, and instead, it is pushed to reset under the action of the first spring 3.

[0033] Further, the above-mentioned hydraulic component 1 further includes a three-way adapter 16, a check valve 17, and a connecting pipe 18; the three-way adapter 16 is connected between the valve body 13 and the water bag 12; the check valve 17 is arranged inside the valve body 13; both ends of the connecting pipe 18 are respectively connected to the three-way adapter 16 and the valve body 13 and communicated to both sides of the check valve 17; the cross-sectional area of the connecting pipe 18 is smaller than the cross-sectional area of the valve body 13, that is, the flow rate of the connecting pipe 18 is smaller than the flow rate of the valve body 13. Due to the setting of the check valve 17, after the water output by the water bag 12 passes through the check valve 17, it can only flow back to the water bag 12 in the direction of the connecting pipe 18. Thus, the reset speed of the piston rod 11 is restricted, that is, the reset speed of the first slider 2 is restricted. Therefore, the inner diameter of the connecting pipe 18 determines the reflux flow rate of the hydraulic component 1, that is, controls the reset duration of the first slider 2. Therefore, by replacing the connecting pipes 18 with different inner diameters, the delay duration of the delayed flushing can be controlled and adjusted.

[0034] The above-mentioned movable component includes a second slider 7 slidably fitted inside the housing, and a swing block 8 pivotally fitted with the second slider 7; the second slider 7 is provided with an output rod 71 passing through the housing to output power; the above-mentioned second hook 81 is arranged on the opposite side surfaces of the swing block 8 and the first slider 2; both ends of the second spring 4 respectively abut against the inner wall of the housing and the swing block 8. In this embodiment, a second positioning post 621 is arranged inside the above-mentioned housing (that is, the above-mentioned second chute 62), the swing block 8 is provided with a second spring cavity 82, and both ends of the second spring 4 are respectively matched with the second positioning post 621 and the second spring cavity 82 to realize the positioning and matching of both ends of the second spring 4 and ensure the position stability of the second spring 4.

[0035] Furthermore, the mechanical delay device is also provided with a pressure block 9 and a third spring 10; the pressure block 9 is slidably fitted within the housing and is opposite the end of the pendulum block 8 away from the second slider 7, and the pressure block 9 and the first slider 2 are respectively located on either side of the pendulum block 8; the third spring 10 is disposed between the inner wall of the housing and the pressure block 9 so that the pressure block 9 abuts the end side of the pendulum block 8. Under the combined action of the pressure block 9 and the third spring 10, the pendulum block 8 is pushed toward the direction of the first slider 2, ensuring that the first hook 21 can engage with the second hook 81. In this embodiment, a third sliding groove is provided within the housing for assembling the pressure block 9 and the third spring 10, which is used to limit the sliding position of the pressure block 9 and does not interfere with the movement path of the pendulum block 9. The pressure block 9 is provided with a pressure rod 91 that extends through the third sliding groove and abuts the side of the pendulum block 8.

[0036] Secondly, the side of the pendulum block 8, away from the second slider 7 and opposite the first slider 2, is provided with a guide slope 83. The inner wall of the housing (i.e., the inner wall of the second chute 62) is provided with a slope 622 opposite the guide slope 63. As a result, the slope 622 and the pressure block 9 act on both sides of the end of the pendulum block 8 respectively: when the second slider 7 and the pendulum block 8 are driven by the first slider 2 and the second spring 4 is compressed, the guide slope 63 contacts the slope 622, driving the pendulum block 8 to swing, thereby causing the second hook 81 to disengage from the first hook 21. The first slider 2 and the pendulum block 8 are no longer linked, and the first slider 2 is independently reset under the action of the first spring 3. Subsequently, under the action of the third spring 10, the pressure block 9 presses the pendulum block 8 toward the slope 622, and the pendulum block 8 and the second slider 7 are reset under the action of the second spring 4, ultimately shutting off the toilet's mechanical flushing mechanism.

[0037] The movable assembly is in transmission connection with the mechanical flushing mechanism of the toilet, so that when the movable assembly is pushed by the first slider 2, it can output power to activate the mechanical flushing mechanism of the toilet. Figures 1-5 In the first embodiment shown, when the present invention is installed in a smart toilet, such as a pressure-type flushing system, the mechanical flushing mechanism is a pilot valve 20. The output rod 71 of the movable assembly acts on the sealing diaphragm 201 of the pilot valve 20 to change its state: when the output rod 71 retracts, the sealing diaphragm 201 is in the open state, and the pressure-type flushing system begins to drain water; when the output rod 71 extends, the sealing diaphragm 201 is in the closed state, and the pressure-type flushing system no longer drains water. Generally, the input end of the pilot valve 20 is connected to a pressure relief device (such as an opening valve) in the pressure-type flushing system. After the pilot valve 20 is opened, water in the pressure relief device is first discharged from the pilot valve 20, causing the pressure relief device to open. After the pressure relief device opens, the pressure bag also begins to drain water.

[0038] At this time, the working principle of the present invention refers to Figures 2-5 As shown: (1)When the user sits down, the water bladder 12 is flattened, and the water inside it is squeezed out, thereby increasing the hydraulic pressure inside the valve body 13. The pressure acts on the diaphragm 15, thus pushing the piston rod 11 to extend. Since the pressure of the hydraulic component 1 is greater than the elastic force of the first spring 3, the first slider 2 is pushed and compresses the first spring 3, enabling the first spring 3 to store energy. At this time, since the first hook 21 and the second hook 81 face each other with inclined surfaces, the first hook 21 can cross over the second hook 81 without driving the swing block 8; during the whole process, the hydraulic pressure output by the hydraulic component 1 is converted into the elastic potential energy of the first spring 3.

[0039] (2)When the user gets up, the elastic potential energy of the first spring 3 is released and starts to push the first slider 2 to reset. Before the first hook 21 contacts the second hook 81, the moving component composed of the second slider 7 and the swing block 8 does not move, and the pressure - type flushing system has not been activated. Then this period of time is the delay duration of the present invention.

[0040] (3)After the first hook 21 contacts the second hook 81, since their planes face each other, the first hook 21 hooks the second hook 81 and drives the second slider 7 and the swing block 8 to move simultaneously and compress the second spring 4. The output rod 71 of the second slider 7 no longer exerts pressure on the sealing diaphragm 201, the pilot valve 20 is opened, and the water inside it is discharged. Then the opening valve of the pressure - type flushing system is opened, and finally, the drainage starts.

[0041] (4)After the swing block 8 moves a certain distance, its guiding inclined surface 83 contacts the slope 622, forcing the swing block 8 to swing relative to the second slider 7. As a result, the second hook 81 disengages from the first hook 21. After that, the first slider 2 continues to reset, and at this time, the elastic potential energy of the second spring 4 is released, pushing the swing block 8 and the second slider 7 to reset. The output rod 71 presses against the sealing diaphragm 201 again and exerts pressure on it, and the pilot valve 20 is closed, completing the entire automatic flushing action process.

[0042] Reference Figure 6 In the second embodiment shown, when the present invention is installed in an ordinary toilet, the output end of the moving component (i.e., the output rod 71 of the second slider 7) can directly act on the button of the water tank or the drain valve. When the moving component is driven by the stored energy of the first spring 3, it can achieve automatic flushing by pressing the button or directly opening the drain valve. Taking acting on the drain valve as an example, referring to Figure 6 , the above - mentioned mechanical flushing mechanism may include a pull rope 30 and a drain valve 40. The two ends of the pull rope 30 are respectively connected to the moving component and the water stop plug 401 of the drain valve 40. Taking Figure 6 the direction in [reference] as an example, when the moving component is stressed and moves to the left, it will pull the pull rope 30, thereby opening the water stop plug 401, and the drain valve 40 starts to drain; when the moving component resets, the drain valve 40 resets under the action of gravity and straightens the pull rope 30 again.

[0043] The above embodiments and drawings do not limit the product form and style of the present invention. Any appropriate changes or modifications made by those of ordinary skill in the art shall be regarded as not departing from the patent scope of the present invention.

Claims

1. A mechanical delay device, characterized in that: It includes a housing, a hydraulic component, a first slider, a first spring, a movable component and a second spring; The hydraulic component has a piston rod that expands and contracts under hydraulic drive; The first slider is slidably fitted in the housing, and its two ends are respectively fitted with the piston rod and the first spring; The movable component is slidably fitted in the housing side by side with the first slider, and a first hook and a second hook are arranged on their opposite surfaces; the second spring is arranged in the housing and acts on the movable component; When the piston rod is driven by hydraulic pressure and extends, it pushes the first slider to move and compress the first spring, so that the first spring stores energy; when the piston rod is not driven by hydraulic pressure, the first spring releases the stored energy to push the piston rod to retract and drive the first slider to reset, and then hooks the second hook through the first hook to drive the movable component to slide and compress the second spring. At this time, the movable component serves as the power output mechanism of the mechanical delay device; when the second hook is disengaged from the first hook, the stored energy of the second spring is released to push the movable component to reset.

2. The mechanical delay device according to claim 1, characterized in that: The hydraulic component further includes a water bag, a valve body, a piston seat and a diaphragm; the water bag is arranged on the bottom surface of the toilet seat ring; both ends of the valve body are respectively communicated with the water bag and the piston seat; the diaphragm is arranged at the communication part between the piston seat and the valve body; the piston rod movably penetrates through the piston seat and abuts against the diaphragm.

3. The mechanical delay device according to claim 2, characterized in that: The hydraulic component further includes a three-way adapter, a check valve and a connecting pipe; the three-way adapter is connected between the valve body and the water bag; the check valve is arranged in the valve body; both ends of the connecting pipe are respectively connected with the three-way adapter and the valve body and communicated to both sides of the check valve; the cross-sectional area of the connecting pipe is smaller than the cross-sectional area of the valve body.

4. The mechanical delay device according to claim 1, characterized in that: The movable component includes a second slider slidably fitted in the housing and a swing block pivotally fitted with the second slider; the second slider is provided with an output rod that penetrates out of the housing to output power; the second hook is arranged on the opposite side surface of the swing block and the first slider; both ends of the second spring respectively abut against the inner wall of the housing and the swing block.

5. The mechanical delay device according to claim 4, characterized in that: The mechanical delay device is further provided with a pressing block and a third spring; the pressing block is slidably fitted in the housing and is opposite to the end of the swing block away from the second slider, and the pressing block and the first slider are respectively located on both sides of the swing block; the third spring is arranged between the inner wall of the housing and the pressing block so that the pressing block abuts against the end side surface of the swing block.

6. The mechanical delay device according to claim 5, characterized in that: A third sliding groove for assembling the pressure block and the third spring is provided in the housing and is used to limit the sliding position of the pressure block. The pressure block is provided with a pressure rod passing through the third sliding groove and abutting against the side surface of the pendulum block.

7. The mechanical delay device according to claim 5, wherein: A guide slope is provided on the side of the pendulum block away from the end of the second slider and opposite to the first slider, and a slope opposite to the guide slope is provided on the inner wall of the shell; when the second slider and the pendulum block are driven by the first slider and the second spring is compressed, the guide slope contacts the slope and drives the pendulum block to swing, thereby causing the second hook to disengage from the first hook.

8. The mechanical delay device according to claim 1, wherein: The movable component is in transmission connection with the mechanical flushing mechanism of the toilet. When the movable component is pushed by the first slider, it outputs power so that the mechanical flushing mechanism of the toilet is turned on.

9. The mechanical delay device according to claim 8, wherein: The mechanical flushing mechanism is a pilot valve, and the output rod of the movable component acts on the sealing diaphragm of the pilot valve to change the state of the sealing diaphragm: when the output rod is retracted, the sealing diaphragm is in an open state; when the output rod is extended, the sealing diaphragm is in a closed state.

10. The mechanical delay device according to claim 8, wherein: The mechanical flushing mechanism includes a pull rope and a drain valve, and both ends of the pull rope are respectively connected to the movable component and the water stopper of the drain valve.

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