Electrically controlled toilet tank drain valve

Abstract

The utility model discloses a kind of toilet water tank electric control drain valves, including base, inner core pipe, water seal assembly, the base is equipped with water outlet hole, the water seal assembly is connected in the inner core pipe bottom for opening or closing the water outlet hole, further include cylinder and water pump, the part of the inner core pipe into the cylinder divides the inner chamber of the cylinder into upper chamber and lower chamber, the water outlet of the water pump is communicated with the lower chamber, when needing drainage, the water pump pushes the inner core pipe vertically upward after water pressure into the lower chamber of the cylinder to make the water seal assembly open the water outlet hole, and, the duty cycle of the water pump or equivalent average voltage can be adjusted. Therefore, the electric control drain valve of the utility model, by adjusting the duty cycle of water pump, the adjustment of the scouring force of drain valve is realized, so that drain valve has the advantage of adjustable scouring force or drainage rate.

Description

Technical Field

[0001] This utility model relates to a drain valve, and more particularly to a method for adjusting the flushing force of a toilet drain valve and an electrically controlled drain valve for a toilet tank using the method. Background Technology

[0002] The flush valves used in toilet (i.e., toilet bowl) flush tanks are mainly mechanical or pneumatic. Both achieve drainage by mechanically or pneumatically lifting the inner tube and sealing plate. The drainage time is linked to the float and liquid level within the valve. Specifically, during flushing, the inner tube and sealing plate are lifted to the open position. Supported by the float, they remain in this open position until the float loses buoyancy and falls, releasing the inner tube and sealing plate, which then fall back down to close the drain. Therefore, whether flushing fully or partially, the inner tube and sealing plate correspond to only one open position; half-flush corresponds to the half-flush raised position, and full-flush corresponds to the full-flush raised position. Once the float is no longer supported, they will naturally fall back down to close the drain.

[0003] Because both designers and users desired more functionality from the drain valve, the idea of ​​adjusting the drainage volume (i.e., flushing water volume) naturally arose. To this end, designers upgraded the structure of the cup used to support the float by adding an adjusting plate at the drain outlet. This allows the size of the drain outlet to be adjusted, thereby regulating the time it takes for the float to fall. Therefore, when users want better water-saving performance, they can increase the size of the drain outlet, causing the float to fall faster and reducing the drainage volume per cycle. Conversely, when users want better flushing performance, they can decrease the size of the drain outlet, causing the float to fall slower and increasing the drainage volume per cycle.

[0004] However, in actual use, it has been found that in some special cases, such as when the waste is firmly attached to the surface of the toilet bowl, even if the flushing time of the drain valve is increased, it is impossible to flush the waste away. The reason is that increasing the flushing time only increases the total amount of wastewater, but the flushing rate (i.e., the speed of drainage) does not change. It can be understood that the flushing time of the water flow is extended, but the flushing force (or the flushing energy per unit time) does not change, so it is impossible to quickly flush away the waste. Utility Model Content

[0005] This utility model provides an electrically controlled drain valve for a toilet tank, capable of adjusting the draining rate. The technical solution adopted by this utility model to solve its technical problem is as follows:

[0006] The method for adjusting the flushing force of the toilet drain valve is as follows: when the water-sealing component connected to the inner core tube covers the water outlet of the base, the water is stopped. When drainage is needed, the inner core tube moves vertically upward, causing the water-sealing component to open the water outlet of the base. The water pump then pressurizes water into the cylinder, thereby pushing the inner core tube to move vertically upward. The pressure of the water in the cylinder is adjusted by regulating the duty cycle of the water pump. The duty cycle of the water pump is directly proportional to the pressure of the water in the cylinder. The pressure of the water in the cylinder is directly proportional to the distance the inner core tube moves vertically upward. The distance the inner core tube moves vertically upward is directly proportional to the drainage rate of the toilet drain valve.

[0007] In a preferred embodiment: while the water pump pressurizes water into the cylinder, the water inside the cylinder is also released through the pressure relief hole.

[0008] In a preferred embodiment: the water pump draws water from the water tank into the cylinder, and the water in the cylinder is discharged back into the water tank through the pressure relief hole.

[0009] In a preferred embodiment: a spring applies a vertically downward elastic force to the inner core tube within the cylinder.

[0010] In a preferred embodiment: the time for opening the water outlet of the base is adjusted by adjusting the running time of the water pump.

[0011] The toilet tank's electrically controlled drain valve includes a base, an inner core tube, and a water-sealing assembly. The base has a water outlet, and the water-sealing assembly is connected to the bottom of the inner core tube to open or close the water outlet. It also includes a cylinder and a water pump. The portion of the inner core tube extending into the cylinder divides the cylinder's interior into an upper chamber and a lower chamber. The water pump's outlet connects to the lower chamber. When drainage is needed, the water pump pressurizes water into the lower chamber of the cylinder, pushing the inner core tube vertically upwards, thereby opening the water outlet using the water-sealing assembly. Furthermore, the water pump's duty cycle or equivalent average voltage is adjustable.

[0012] In a preferred embodiment, the cylinder body has a pressure relief hole on the side wall of its lower chamber.

[0013] In a preferred embodiment: the base is provided with a water tank above the side of its water outlet, the water pump draws water from the water tank, and the pressure relief hole is connected to the water tank.

[0014] In a preferred embodiment, the system further includes a spring and a top cover. The spring is disposed in the upper chamber of the cylinder and applies a vertically downward elastic force to the inner core tube. The top cover fastens to the base. The cylinder is clamped and positioned between the top cover and the base. The water pump is clamped and positioned between the top cover and the base.

[0015] In a preferred embodiment: the upper end of the inner core tube extends upward through the cylinder body and the upper cover, and the upper chamber of the cylinder body is provided with an exhaust port that communicates with the atmosphere.

[0016] Compared with the prior art, this technical solution has the following advantages:

[0017] 1. Adjusting the duty cycle (or equivalent average) of the water pump can regulate the drainage rate and increase the flushing force. For example, if a greater flushing force and better flushing effect are desired, the duty cycle of the water pump can be increased. This increases the pressure of the water injected into the cylinder when the pump starts, pushing the inner core tube upward a greater distance. This increases the opening range of the water outlet of the sealing component, increasing the water flow rate and thus enhancing the flushing force. Conversely, if water conservation is desired, the duty cycle of the water pump can be decreased. This reduces the opening range of the water outlet of the sealing component, decreasing the water flow rate and saving water. Therefore, the electrically controlled drain valve of this invention achieves adjustment of the flushing force by regulating the duty cycle of the water pump, giving the drain valve the advantage of adjustable flushing force or drainage rate.

[0018] 2. When the water pump starts working, the pressurized water in the cylinder is released through the pressure relief hole, which can prevent the water pump from being pressurized and thus reducing its service life.

[0019] 3. The water pump draws water from the water tank into the cylinder, and the depressurized water flows back into the water tank. Even if the water level in the tank is lower than that in the water trough, it will not affect the operation of the water pump. Therefore, the water pump is set up more flexibly.

[0020] 4. By adjusting the pump's running time, the drainage volume can be controlled while ensuring the required flushing force or drainage rate, resulting in water conservation. For example, if it originally takes five seconds to flush away dirt after the drain valve is opened, it can be done in three seconds after the drain valve's drainage rate is increased. This reduces the pump's running time, keeping the drain valve's opening time at three seconds, thus saving water. Therefore, it can balance drainage rate and water consumption. Attached Figure Description

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] Figure 1 A three-dimensional schematic diagram of the electrically controlled drain valve of the toilet tank is shown.

[0023] Figure 2 It is illustrated Figure 1 The diagram shown is an exploded 3D view of the electrically controlled drain valve of the toilet tank.

[0024] Figure 3 It is illustrated Figure 1 The diagram shows a cross-sectional view of the electrically controlled drain valve of the toilet tank.

[0025] Figure 4 It is illustrated Figure 1 The diagram shows the electrically controlled drain valve of the toilet tank in the stopped state.

[0026] Figure 5 It is illustrated Figure 1 The diagram shows the drainage of the toilet tank's electrically controlled drain valve in low-drainage-rate mode.

[0027] Figure 6 It is illustrated Figure 1 The diagram shows the drainage of the toilet tank's electrically controlled drain valve in high-drainage-rate mode.

[0028] Figure 7 It is illustrated Figure 1 The diagram shows the pressure relief water circuit of the toilet tank's electrically controlled drain valve during drainage. Detailed Implementation

[0029] Please refer to Figures 1 to 7 An electrically controlled drain valve for a toilet tank includes a base 10, an inner core tube 20, and a water-sealing assembly 30. The base 10 has a water outlet 12. The water-sealing assembly 30 is connected to the bottom of the inner core tube 20 to open or close the water outlet 12. When the inner core tube 20 is raised, the water-sealing assembly 30 opens the water outlet 12; when the inner core tube 20 is lowered, the water-sealing assembly 30 closes the water outlet 12. This is similar to existing drain valve structures. The electrically controlled drain valve for a toilet tank also includes a cylinder 40 and a water pump 50. The portion of the inner core tube 20 extending into the cylinder 40 divides the inner cavity of the cylinder into an upper chamber 42 and a lower chamber 44. The outlet of the water pump 40 is connected to the lower chamber 44. When drainage is required, the water pump 40 starts and forces (or pumps, draws in) water into the lower chamber 44 of the cylinder 40. The increased pressure in the lower chamber 44 pushes the inner core tube 20 vertically upward, thereby opening the water outlet 12 of the water sealing assembly 30 (during this process, the volume or space of the lower chamber 44 increases, and the volume or space of the upper chamber 42 decreases). The water pump 50 is an adjustable water pump with an adjustable duty cycle or equivalent average voltage. Specifically, the water pump 50 is connected to the control panel module 60, and the duty cycle or equivalent average voltage of the water pump 50 is adjusted on the control panel module 60.

[0030] Therefore, the toilet tank electrically controlled drain valve of this utility model utilizes a water pump 50 to press water into the cylinder 40, thereby pushing the inner core tube 20 to move vertically upward. When it is necessary to adjust the flushing force (or drainage rate) of the drain valve, this can be achieved by adjusting the duty cycle or equivalent average voltage of the water pump 50. Specifically, the pressure value of the water in the cylinder 40 is adjusted by adjusting the duty cycle of the water pump 50. Since the duty cycle of the water pump 50 is directly proportional to the pressure value of the water in the cylinder 40, the pressure value of the water in the cylinder 40 is directly proportional to the distance the inner core tube 20 moves vertically upward, and the distance the inner core tube 20 moves vertically upward is directly proportional to the drainage rate of the toilet drain valve. Therefore, increasing the duty cycle of the water pump increases the drainage rate and flushing force. Figure 6 As shown, after the drain valve opens, the inner core tube 20 moves upward a distance H2. Lowering the duty cycle of the water pump reduces the drainage rate and flushing force. Figure 5 As shown, after the drain valve is opened, the inner core tube 20 moves upward a distance H1, where H1 < H2.

[0031] Understandably, the operating time of the water pump 50 can also be adjusted on the control panel module 60, that is, the time for opening the water outlet 12 of the base can be adjusted. In this way, not only can half-discharge and full-discharge be controlled, but the drainage volume can also be controlled by the drainage time. The drainage volume can be controlled by the drainage time alone, or by the drainage time combined with the drainage rate.

[0032] Preferably, the cylinder 40 has a pressure relief hole 46 on the side wall of its lower chamber 44. Therefore, if there is pressurized water in the lower chamber 44 (the water pump forces water into the cylinder), it can be slowly discharged through the pressure relief hole 46 to relieve pressure, thereby preventing the water pump from being in a pressurized state during operation.

[0033] Preferably, the base 10 has a water tank 14 above the side of its water outlet 12. The water pump 50 draws water from the water tank 14, and the pressure relief hole 46 is connected to the water tank 14. That is, the pressure relief hole 46 flows back to the water tank 14 through the pressure relief water path, and the water level in the tank is affected by the liquid level in the water tank. In this embodiment, the outlet of the water pump 40 is connected to the bottom of the lower chamber 44, and the pressure relief hole 46 is also located at the bottom of the lower chamber 44, and the two are adjacent to each other.

[0034] More preferably, the water pump 40 has its suction port facing downwards and is connected to a water guide pipe, with the lower end of the water guide pipe extending to the bottom of the water tank 14.

[0035] Preferably, the system further includes a spring 70 and a top cover 80. The spring 70 is disposed in the upper chamber 42 of the cylinder body 40 and applies a vertically downward elastic force to the inner core tube 20. The top cover 80 fastens to the base 10. The cylinder body is clamped and positioned between the top cover and the base, and the water pump is clamped and positioned between the top cover and the base. Understandably, with the top cover 80 fastening to the base 10, water in the water tank can flow into the water trough 14 through the assembly gap between the two.

[0036] Preferably, the upper end of the inner core tube 20 extends upward through the cylinder body 40 and the upper cover 80, and the upper chamber 42 of the cylinder body 40 is provided with an exhaust port that communicates with the atmosphere.

[0037] Preferably, the cylinder body 40 includes a main body and an upper end cover, the upper end cover being fastened to the main body to facilitate the installation of the spring 70. More preferably, a water baffle 22 is provided extending outward from the middle of the inner core tube 20, and a retaining edge 24 extends upward from the outer edge of the water baffle. The water baffle and the retaining edge form a spring groove, and the lower part of the spring 70 is placed in the spring groove. The water baffle 22 and the retaining edge 24 divide the inner cavity of the cylinder body 40 into an upper chamber 42 and a lower chamber 44.

[0038] Preferably, the inner core tube 20 is a hollow pipe structure.

[0039] The above description is only a preferred embodiment of the present utility model, and therefore cannot be used to limit the scope of the present utility model. All equivalent changes and modifications made in accordance with the scope of the present utility model patent and the contents of the specification should still fall within the scope of the present utility model.

Claims

1. An electrically controlled drain valve for a toilet tank, comprising a base, an inner core tube, and a sealing assembly, wherein the base has a water outlet hole, and the sealing assembly is connected to the bottom of the inner core tube for opening or closing the water outlet hole, characterized in that: It also includes a cylinder and a water pump. The part of the inner core tube that extends into the cylinder divides the inner cavity of the cylinder into an upper chamber and a lower chamber. The outlet of the water pump is connected to the lower chamber. When drainage is required, the water pump pressurizes water into the lower chamber of the cylinder and then pushes the inner core tube to move vertically upward, thereby opening the water outlet of the water sealing assembly. Furthermore, the duty cycle or equivalent average voltage of the water pump is adjustable.

2. The electrically controlled drain valve for a toilet tank according to claim 1, characterized in that: The cylinder body has a pressure relief hole on the side wall of its lower chamber.

3. The electrically controlled drain valve for a toilet tank according to claim 2, characterized in that: The base has a water tank above the side of its water outlet, the water pump draws water from the water tank, and the pressure relief hole is connected to the water tank.

4. The electrically controlled drain valve for a toilet tank according to claim 3, characterized in that: The water pump's suction port is positioned downwards and connected to a water guide pipe, with the lower end of the water guide pipe extending to the bottom of the water tank.

5. The electrically controlled drain valve for a toilet tank according to claim 3, characterized in that: The water pump outlet is connected to the bottom of the lower chamber, and the pressure relief hole is also located at the bottom of the lower chamber, with the two adjacent to each other.

6. The electrically controlled drain valve for a toilet tank according to claim 3, characterized in that: It also includes a spring and a top cover. The spring is disposed in the upper chamber of the cylinder and applies a vertically downward elastic force to the inner core tube. The top cover fastens to the base. The cylinder is clamped and positioned between the top cover and the base. The water pump is clamped and positioned between the top cover and the base.

7. The electrically controlled drain valve for a toilet tank according to claim 6, characterized in that: The cylinder body includes a main body and an upper end cover, which are fastened to the main body.

8. The electrically controlled drain valve for a toilet tank according to claim 7, characterized in that: A water baffle is provided in the middle of the inner core tube, and a baffle is provided on the outer edge of the water baffle extending upward. The water baffle and the baffle form a spring groove, and the lower part of the spring is placed in the spring groove. The water baffle and the baffle divide the inner cavity of the cylinder into an upper chamber and a lower chamber.

9. The electrically controlled drain valve for a toilet tank according to claim 6, characterized in that: The upper end of the inner core tube extends upward through the cylinder body and the upper cover, and the upper chamber of the cylinder body is provided with an exhaust port that communicates with the atmosphere.

10. The electrically controlled drain valve for a toilet tank according to claim 1, characterized in that: The inner core tube is a hollow pipe structure.

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