Toilet flushing device

Abstract

The present invention discloses a toilet flushing device, comprising: an inlet valve for connecting to an external water supply pipeline; a drain valve provided with a connecting pipeline communicating with the inlet valve; a nozzle provided on the drain valve, the nozzle communicating with the connecting pipeline to spray water into the water inlet channel; and a control mechanism provided on the inlet valve or the drain valve for opening or delaying the interruption of the water flow in the connecting pipeline to control the spraying time of the nozzle. The toilet flushing device with the above structure sprays water from the nozzle to break up excrement into small pieces, thereby reducing toilet clogging. Furthermore, the addition of a control mechanism facilitates regulating the spraying time of the nozzle, thereby improving the toilet's water-saving performance.

Description

Technical Field

[0001] The present invention relates to the technical field of toilets, and in particular to a toilet flushing device. Background Art

[0002] Currently, existing toilets have an inlet channel connected to a water tank at one end and a bowl at the other. A drain channel is also connected to the bowl. Both a drain valve and an inlet valve are built into the water tank. The inlet valve is used to supply water to the tank, while the drain valve opens the drain port of the tank to allow water to flow into the inlet channel. To flush, a certain amount of water is introduced into the bowl through the inlet channel. Subsequently, under the action of siphoning, excrement is drained out of the drain channel, completing the flushing process.

[0003] However, when a large volume of excrement is encountered in an existing toilet, the excrement is likely to clog the drainage channel, requiring multiple water injections, thereby wasting water resources. Summary of the Invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a toilet flushing device that uses a nozzle to spray water to break up excrement into small pieces, thereby reducing toilet clogging. Furthermore, the present invention incorporates a control mechanism to adjust the spraying time of the nozzle, thereby improving the toilet's water conservation performance.

[0005] According to an embodiment of the present invention, a toilet flushing device includes: an inlet valve for connecting to an external water supply pipeline; a drain valve provided with a connecting pipeline connected to the inlet valve; a nozzle provided on the drain valve, the nozzle being connected to the connecting pipeline to spray water into the water inlet channel; and a control mechanism provided on the inlet valve or the drain valve, for opening or delaying the water flow in the connecting pipeline to control the water spraying time of the nozzle.

[0006] The toilet flushing device according to an embodiment of the present invention has at least the following beneficial effects: during use, an external water supply line supplies water to the connecting line through the water inlet valve, enabling the nozzle to spray water into the water inlet channel. This strong water flow, on the one hand, breaks up excrement into small pieces, thereby preventing excrement from clogging the drainage channel. On the other hand, it increases the drainage volume of the water inlet channel, facilitating the formation of a siphon effect in the drainage pipe, thereby shortening flushing time and achieving a cleaner flushing effect. Furthermore, during the process of spraying water from the nozzle, a control mechanism delays the interruption of the water flow from the connecting line to control the spraying time of the nozzle, thereby automatically stopping the water flow within a certain period of time, thereby improving the water conservation performance of the toilet.

[0007] In some embodiments of the present invention, the control mechanism is a first control mechanism linked to the water inlet valve, the first control mechanism includes a cylinder body, a first piston, a second piston, a first elastic member and a water discharge structure, the cylinder body is provided with an inner cavity extending in a vertical direction, the first piston is connected to the second piston, the second piston divides the inner cavity into a first water storage area and a second water storage area distributed up and down, the first water storage area is connected to the water outlet end of the water inlet valve, the water discharge structure is used to adjust the water outlet of the second water storage area, the cylinder body is provided with a first channel, the first channel connects the first water storage area and the connecting pipeline, in the process of the water inlet valve draining water into the first water storage area, the water discharge structure can unload the water in the second water storage area, so that the second piston drives the first piston to move to block the first channel under the action of the water pressure in the first water storage area, and the first elastic member contacts the second piston to drive the second piston to reset.

[0008] In some embodiments of the present invention, the drainage structure includes a switch component and a plurality of drainage holes of different diameters, the drainage holes are arranged at the lower end of the cylinder body, each of the drainage holes can connect the second water storage area and the water tank, the switch component is arranged at the lower end of the cylinder body, and the switch component is used to selectively open any one of the drainage holes.

[0009] In some embodiments of the present invention, the first piston includes a mounting member, a partition plate and a surrounding plate member, the outer wall of the surrounding plate member is attached to the inner wall of the cylinder body, the partition plate is connected between the mounting member and the surrounding plate member, and the three together define at least two connecting channels connected to the first water storage area.

[0010] In some embodiments of the present invention, the connecting pipeline includes a first pipeline and a second pipeline that are interconnected, the control mechanism is a second control mechanism that links the drain valve, the second control mechanism includes a main body, a water sealing member, a second elastic member and a connecting rod assembly, one end of the first pipeline is connected to the water outlet end of the water inlet valve, a first installation cavity is provided between the main body and the second pipeline, the end of the second pipeline away from the main body is connected to the nozzle, the water sealing member is movably built into the first installation cavity, the water sealing member separates the first installation cavity into a first chamber and a second chamber, the second chamber is connected to the first pipeline and the second pipeline, the main body is provided with a pressure relief structure for changing the pressure of the first chamber, the connecting rod assembly links the pressure relief structure so that the pressure relief structure can reduce the pressure of the first chamber and drive the water sealing member to move to open the second chamber, and the second elastic member is linked to the connecting rod assembly to drive the connecting rod assembly to reset.

[0011] In some embodiments of the present invention, the second control mechanism also includes a damping member, the main body has a second mounting cavity for accommodating the damping member, the connecting rod assembly includes a moving rod, a connecting rod and a lever member, the moving rod is vertically accommodated in the second mounting cavity, the upper end of the moving rod is rotatably connected to the lever member through the connecting rod, the lever member is swinging around a fixed point and is arranged on the drain valve, the drain valve is provided with a button for driving the lever member to swing, the moving rod is passed through the damping member, the damping member is used to generate resistance to hinder the movement of the moving rod, the second elastic member is provided between the moving rod and the inner top wall of the main body, when the button drives the lever member to swing, the moving rod moves upward to compress the second elastic member, and enables the pressure relief structure to reduce the pressure in the first chamber.

[0012] In some embodiments of the present invention, the pressure relief structure includes a pressure relief hole and a sealing member, the pressure relief hole connects the first chamber and the second installation cavity, the sealing member is arranged at the lower end of the moving rod, and the moving rod drives the sealing member to move to open or close the pressure relief hole.

[0013] In some embodiments of the present invention, the main body includes a cylinder body and an end cover, the inner wall of the cylinder body forms the second mounting cavity, the end cover is threadedly connected to the upper end of the cylinder body, the moving rod is provided with a flat plate portion, and the second elastic member abuts between the inner top wall of the end cover and the flat plate portion.

[0014] In some embodiments of the present invention, the drain valve is provided with an installation channel and a plug hole, the installation channel is connected to the connecting pipe, the plug hole is connected to the installation channel, the nozzle can be rotatably accommodated in the installation channel, the drain valve also includes a locking member, the locking member is provided with a plug plate that can be passed through the plug hole, the plug plate is pressed against the outer wall of the nozzle to lock the deflection angle of the nozzle relative to the drain valve.

[0015] In some embodiments of the present invention, the nozzle includes a cylindrical portion connected to the mounting channel, and the cylindrical portion has a plurality of first latching teeth distributed circumferentially along its outer wall and located at the same height. The plug-in plate is provided with a plurality of second latching teeth on the side facing the plug-in hole, and the second latching teeth are engaged between two adjacent first latching teeth to limit the deflection angle of the nozzle.

[0016] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of the embodiments with reference to the accompanying drawings, in which:

[0018] Figure 1 A cross-sectional view of an embodiment of a toilet flushing device of the present invention assembled in a toilet;

[0019] Figure 2 for Figure 1 A schematic structural diagram of an embodiment;

[0020] Figure 3 for Figure 2 An internal cross-sectional view of a first control mechanism;

[0021] Figure 4 for Figure 3 A schematic structural diagram of the first piston and the second piston in FIG.

[0022] Figure 5 for Figure 1 An internal cross-sectional view of the nozzle and drain valve in the embodiment;

[0023] Figure 6 for Figure 5 Exploded view of the local structure of the nozzle and drain valve;

[0024] Figure 7 for Figure 6 An enlarged schematic diagram of point A in FIG.

[0025] Figure 8 It is a structural schematic diagram of another embodiment of a toilet flushing device of the present invention;

[0026] Figure 9 for Figure 8 An internal cross-sectional view of the drain valve, the nozzle, and the second control mechanism of the embodiment;

[0027] Figure 10 for Figure 9 A partial enlarged view of point B in the middle.

[0028] In the figure: toilet 100, water inlet valve 200, drain valve 300, installation channel 301, plug hole 302, locking hole 303, connecting pipe 310, first pipe 311, second pipe 312, button 320, locking member 330, plug plate 331, second latching tooth 332, elastic protrusion 333, installation hole 334, water tank 400, water inlet channel 500, nozzle 600, cylindrical portion 610, first latching tooth 611, annular plate 620, first control mechanism 700, cylinder body 710, first water storage area 711, second water storage area 712, drain hole 713, first channel 71 4, second channel 715, first piston 720, mounting member 721, partition plate 722, enclosure member 723, connecting channel 724, second piston 730, partition portion 731, annular groove 732, first elastic member 740, switch member 750, second control mechanism 800, main body 810, first mounting cavity 811, pressure relief hole 812, second mounting cavity 813, cylinder body 814, end cover 815, water sealing member 820, fixing member 821, second elastic member 830, connecting rod assembly 840, moving rod 841, connecting rod 842, lever member 843, blocking member 850, damping member 860. DETAILED DESCRIPTION

[0029] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0030] In the description of the present invention, it should be understood that descriptions involving orientations, such as the orientations or positional relationships indicated by terms such as "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside", are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0031] In the description of the present invention, "several" means one or more, "many" means more than two, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. The use of "first" and "second" in the description is solely for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, implicitly specifying the number of the indicated technical features, or implicitly specifying the order of the indicated technical features.

[0032] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0033] See also Figure 1 、 Figure 2 and Figure 8 A toilet flushing device includes: an inlet valve 200, used to connect to an external water supply pipeline; a drain valve 300, provided with a connecting pipeline 310 connected to the inlet valve 200; a nozzle 600, provided on the drain valve 300, the nozzle 600 is connected to the connecting pipeline 310 to spray water into the water inlet channel 500; a control mechanism, provided on the inlet valve 200 or the drain valve 300, used to open or delay the water flow in the connecting pipeline 310 to control the water spraying time of the nozzle 600.

[0034] When the toilet flushing device of the above structure is in use, the external water supply line supplies water to the connecting pipe 310 through the water inlet valve 200, allowing the nozzle 600 to spray water into the water inlet channel 500. On the one hand, the large water flow impact is used to break up excrement into small pieces, thereby preventing excrement from clogging the drainage channel. On the other hand, it increases the drainage volume of the water inlet channel 500, which helps to accelerate the formation of a siphon effect in the drainage pipe, thereby shortening the flushing time and achieving a cleaner flushing effect. Specifically, during the process of the nozzle 600 spraying water, the control mechanism delays the interruption of the water flow in the connecting pipe 310 to control the water spraying time of the nozzle 600, so that the water flow can automatically stop within a certain period of time, which is beneficial to improving the water conservation performance of the toilet.

[0035] See also Figures 1 to 4In some embodiments of the present invention, the control mechanism is a first control mechanism 700 of the linked water inlet valve 200. The first control mechanism 700 includes a cylinder 710, a first piston 720, a second piston 730, a first elastic member 740, and a water discharge structure. The cylinder 710 is provided with an inner cavity extending in a vertical direction. The first piston 720 is connected to the second piston 730. The second piston 730 divides the inner cavity into a first water storage area 711 and a second water storage area 712 distributed in an upper and lower direction. The first water storage area 711 is connected to the water outlet end of the water inlet valve 200. The water discharge The structure is used to adjust the water output of the second water storage area 712. The cylinder body 710 is provided with a first channel 714, which connects the first water storage area 711 and the connecting pipe 310. When the water inlet valve 200 drains water into the first water storage area 711, the water discharge structure can unload the water in the second water storage area 712, so that the second piston 730 drives the first piston 720 to move to block the first channel 714 under the action of the water pressure in the first water storage area 711, and the first elastic member 740 contacts the second piston 730 to drive the second piston 730 to reset.

[0036] Specifically, when the sprinkler head 600 is required to spray water, water is introduced from the external water supply pipeline into the first water storage area 711 through the water inlet valve 200. The water then flows into the connecting pipe 310 through the first channel 714, thereby supplying water to the sprinkler head 600. Simultaneously, the water discharge structure unloads the water from the second water storage area 712, causing the second piston 730, under the action of the water pressure in the first water storage area 711, to gradually move the first piston 720 to block the first channel 714, thereby achieving the effect of delaying the interruption of the water supply to the connecting pipe 310 and allowing the sprinkler head 600 to automatically stop spraying water within a certain period of time. When the water inlet valve 200 stops supplying water, the second piston 730 returns to its initial position under the action of the first elastic member 740. It can be understood that the greater the amount of water that the drainage structure unloads from the second water storage area 712, the smaller the resistance the second piston 730 encounters from the second water storage area 712, thereby making the second piston 730 move faster, and in turn making the time that the first piston 720 blocks the first channel 714 shorter. Therefore, people can adjust the water output of the second water storage area 712 through the drainage structure to control the water spraying time of the nozzle 600.

[0037] It should be noted that, see Figure 4 In order to improve the water-isolating effect of the second piston 730, the second piston 730 has a partition 731 facing the first piston 720. The upper surface of the partition 731 divides the inner cavity into a first water storage area 711 and a second water storage area 712 distributed upper and lower. The side wall of the second piston 730 is provided with an annular groove 732, and the annular groove 732 has a built-in sealing ring that fits with the inner wall of the cylinder body 710.

[0038] See also Figures 1 to 3In some embodiments of the present invention, the drainage structure includes a switch 750 and multiple drainage holes 713 of varying diameters. The drainage holes 713 are located at the lower end of the cylinder body 710. Each drainage hole 713 connects the second water storage area 712 to the water tank 400. The switch 750 is located at the lower end of the cylinder body 710 and is used to selectively open any drainage hole 713. Specifically, the larger the diameter of the drainage hole 713, the greater the amount of water discharged from the second water storage area 712, which in turn reduces the resistance of the second water storage area 712 to the second piston 730, thereby increasing the speed of the second piston 730. Therefore, by selecting the drainage hole 713 with the appropriate diameter, the amount of water discharged from the second water storage area 712 can be adjusted, thereby controlling the water spraying time of the nozzle 600. The switch 750 is a rotary switch, so users can open any drainage hole 713 by rotating the switch 750. In some embodiments, the drainage structure can also be replaced by multiple drainage pipes connecting the second water storage area 712 and the water tank 400, and each drainage pipe is provided with a one-way valve, so people can adjust the water output of the second water storage area 712 by opening the number of one-way valves.

[0039] See also Figures 1 to 3 In some embodiments of the present invention, the cylinder body 710 further defines a second channel 715 located above the first channel 714. The second channel 715 connects the first water storage area 711 and the water tank 400. Specifically, when a user flushes the toilet, the water in the water tank 400 flows into the water inlet channel 500 as the drain valve 300 opens. The water in the water inlet valve 200 then drains the water to the first water storage area 711. The water in the first water storage area 711 flows through the first channel 714 into the connecting pipe 310 to supply water to the nozzle 600. Simultaneously, the water in the second water storage area 712 flows into the water tank 400 through the drain hole 713. The water pressure from the first water storage area 711 drives the first piston 720 to move. During this process, the second channel 715 is always blocked by the first piston 720, so that the water in the first water storage area 711 flows out only from the first channel 714. After the first piston 720 moves to block the first channel 714, the connecting pipe 310 stops supplying water to the nozzle 600. At this time, the first piston 720 no longer blocks the second channel 715, allowing the water in the first water storage area 711 to flow into the water tank 400. When the water level in the water tank 400 reaches a certain height, the water inlet valve 200 stops supplying water, and the second elastic member 830 returns to its original position, driving the second piston 730 to return upward, allowing the water in the first water storage area 711 to continue to drain into the water tank 400. At the same time, some of the water in the water tank 400 flows into the second water storage area 712 again, so that the second water storage area 712 can store a certain amount of water again and provide resistance for the next movement of the second piston 730.

[0040] See also Figure 4In some embodiments of the present invention, the first piston 720 includes a mounting member 721, a partition plate 722, and a panel member 723. The outer wall of the panel member 723 is attached to the inner wall of the cylinder body 710. The partition plate 722 is connected between the mounting member 721 and the panel member 723, and the three together define at least two connecting channels 724 connected to the first water storage area 711.

[0041] Specifically, water from the water inlet valve 200 passes through the connecting channel 724, applying pressure to the second piston 730. The retaining plate 723 abuts against the inner wall of the cylinder 710, allowing it to move to block the first channel 714. It will be appreciated that the mounting member 721, the partition plate 722, and the retaining plate 723 are integrally injection-molded, simplifying the structure of the first piston 720. It should be noted that the mounting member 721 is bolted to the upper end of a connecting rod, the lower end of which is connected to the second piston 730, enabling the second piston 730 to drive the first piston 720.

[0042] See also Figures 8 to 10 In some embodiments of the present invention, the connecting pipe 310 includes a first pipe 311 and a second pipe 312 that are interconnected. The control mechanism is a second control mechanism 800 of the linked drain valve 300. The second control mechanism 800 includes a main body 810, a water sealing member 820, a second elastic member 830, and a connecting rod assembly 840. One end of the first pipe 311 is connected to the water outlet end of the water inlet valve 200. A first installation cavity 811 is provided between the main body 810 and the second pipe 312. The end of the second pipe 312 away from the main body 810 is connected to the nozzle 6. 00, the water sealing component 820 is movably built into the first installation cavity 811, and the water sealing component 820 separates the first installation cavity 811 into a first chamber and a second chamber. The second chamber is connected to the first pipe 311 and the second pipe 312. The main body 810 is provided with a pressure relief structure for changing the pressure of the first chamber. The connecting rod assembly 840 is linked to the pressure relief structure so that the pressure relief structure can reduce the pressure of the first chamber and drive the water sealing component 820 to move and open the second chamber. The second elastic component 830 is linked to the connecting rod assembly 840 to drive the connecting rod assembly 840 to reset.

[0043] Specifically, a fixing member 821 is provided between the water sealing member 820 and the second pipeline 312. A second chamber is defined between the fixing member 821 and the water sealing member 820. The fixing member 821 defines a water hole connecting the first pipeline 311 and the second pipeline 312. In the initial position, the water sealing member 820 is pressed against the fixing member 821 to block the water hole. When the sprinkler head 600 is required to spray water, the water inlet valve 200 admits water to the first pipeline 311. The connecting rod assembly 840 activates the pressure relief structure to reduce the pressure in the first chamber. At this time, the pressure in the second chamber is greater than the pressure in the first chamber. As a result, the water pressure in the second chamber pushes the water sealing member 820 upward, opening the water hole, allowing water to flow into the second pipeline 312 to supply the sprinkler head 600. Subsequently, the second elastic member 830 gradually resets the connecting rod assembly 840, allowing the pressure relief structure to re-replenish the pressure in the first chamber. At this point, the pressure in the first chamber is greater than the pressure in the second chamber. This pressure in the first chamber then drives the water sealing member 820 downwardly to press against the fixing member 821, thereby re-blocking the water hole and delaying the flow of water through the second pipe 312. The greater the elastic potential energy stored in the second elastic member 830, the faster the connecting rod assembly 840 resets, which in turn causes the pressure relief structure to re-replenish the pressure in the first chamber, ultimately shortening the water supply period to the second pipe 312. Therefore, the water supply period to the second pipe 312 can be controlled by adjusting the elastic potential energy of the second elastic member 830. It is understood that to improve the blocking effect, the water sealing member 820 is made of silicone or plastic material, allowing it to deform under force to better block the water hole.

[0044] See also Figures 8 to 10 In some embodiments of the present invention, the second control mechanism 800 also includes a damping member 860, the main body 810 has a second mounting cavity 813 for accommodating the damping member 860, and the connecting rod assembly 840 includes a moving rod 841, a connecting rod 842 and a lever member 843. The moving rod 841 is vertically accommodated in the second mounting cavity 813, and the upper end of the moving rod 841 is rotated to connect the lever member 843 through the connecting rod 842. The lever member 843 swings around a fixed point and is arranged on the drain valve 300. The drain valve 300 is provided with a button 320 for driving the lever member 843 to swing. The moving rod 841 is passed through the damping member 860, and the damping member 860 is used to generate resistance to hinder the movement of the moving rod 841. The second elastic member 830 is arranged between the moving rod 841 and the inner top wall of the main body 810. When the button 320 drives the lever member 843 to swing, the moving rod 841 moves upward to compress the second elastic member 830, and enables the pressure relief structure to reduce the pressure in the first chamber.

[0045] Specifically, when the button 320 of the drain valve 300 is pressed, the lever member 843 is forced to swing, causing the connecting rod 842 to move the movable rod 841 upward, compressing the second elastic member 830, and causing the pressure relief structure to reduce the pressure in the first chamber. When the button 320 of the drain valve 300 is reset, the second elastic member 830 pushes the movable rod 841 downward, allowing the pressure relief structure to replenish the pressure in the first chamber. It will be understood that the damping member 860 contains damping oil, and the movable rod 841 will experience resistance from the damping oil during movement, which helps to improve the smooth movement of the movable rod 841.

[0046] See also Figures 8 to 10 In some embodiments of the present invention, the pressure relief structure includes a pressure relief hole 812 and a blocking member 850. The pressure relief hole 812 connects the first chamber and the second mounting chamber 813. The blocking member 850 is disposed at the lower end of the movable rod 841. The movable rod 841 drives the blocking member 850 to move to open or close the pressure relief hole 812. Specifically, when the movable rod 841 moves upward, the blocking member 850 opens the pressure relief hole 812, allowing the fluid in the first chamber to enter the second accommodating chamber, thereby reducing the pressure in the first chamber. When the second elastic member 830 returns to its original position and drives the movable rod 841 downward, the blocking member 850 pushes the fluid in the second mounting chamber 813 back into the first chamber and blocks the pressure relief hole 812, thereby increasing the pressure in the first chamber. In some embodiments, the pressure relief structure can also be replaced by a linkage between a push switch and a pressure relief line with a one-way valve. By moving the rod 841 to touch the push switch, the one-way valve opens the pressure relief line, which can also achieve the effect of unloading the pressure in the first chamber.

[0047] See also Figures 8 to 10 In some embodiments of the present invention, the main body 810 includes a barrel 814 and an end cap 815. The inner wall of the barrel 814 defines a second mounting cavity 813. The end cap 815 is threadedly connected to the upper end of the barrel 814. The movable rod 841 includes a flat plate portion, and the second elastic member 830 abuts between the inner top wall of the end cap 815 and the flat plate portion. Specifically, the height between the flat plate portion and the end cap 815 can be adjusted by adjusting the number of turns that the end cap 815 is threadedly connected to the barrel 814, thereby changing the height space for the second elastic member 830 to deform. Furthermore, by changing the elastic potential energy that the second elastic member 830 can store, the water supply time of the second pipeline 312 can be controlled. The adjustment is relatively simple.

[0048] See also Figure 2 、 Figures 5 to 7In some embodiments of the present invention, the drain valve 300 is provided with an installation channel 301 and a plug hole 302. The installation channel 301 is connected to the connecting pipe 310, and the plug hole 302 is connected to the installation channel 301. The nozzle 600 can be rotatably accommodated in the installation channel 301. The drain valve 300 also includes a locking member 330. The locking member 330 is provided with a plug plate 331 that can be passed through the plug hole 302. The plug plate 331 is pressed against the outer wall of the nozzle 600 to lock the deflection angle of the nozzle 600 relative to the drain valve 300.

[0049] Specifically, the appropriate deflection angle of the nozzle 600 is first selected based on the direction of the water inlet channel 500. The locking member 330 then presses against the outer wall of the cylindrical portion 610, ultimately achieving the effect of quickly locking the deflection angle of the nozzle 600. The cooperation between the nozzle 600 and the locking member 330 facilitates adjustment of the installation angle of the nozzle 600 based on the structural layout of the water inlet channel 500, thereby facilitating selection of the appropriate water jet angle of the nozzle 600, thereby improving the product's applicability to different toilet types. It is understood that after the locking member 330 abuts the nozzle 600, it can be fastened to the drain valve 300 using bolts, snap-fit fastening, or magnetic fastening. Specifically, the locking member 330 is provided with an elastic protrusion 333 and a mounting hole 334. The elastic protrusion 333 is connected to the hole wall of the mounting hole 334. The mounting hole 334 forms a space for the elastic protrusion 333 to deform. The drain valve 300 is provided with a locking hole 303. The elastic protrusion 333 is inserted into the locking hole 303 to fix the locking member 330 in the drain valve 300.

[0050] See also Figure 2 、 Figures 5 to 7 In some embodiments of the present invention, the nozzle 600 includes a cylindrical portion 610 connected to the installation channel 301. The cylindrical portion 610 has a plurality of first latching teeth 611 distributed circumferentially along its outer wall and located at the same height. A plurality of second latching teeth 332 are provided on the side of the plug-in plate 331 facing the plug-in hole 302. The second latching teeth 332 are engaged between two adjacent first latching teeth 611 to limit the deflection angle of the nozzle 600.

[0051] Specifically, during use, the appropriate deflection angle of the cylindrical portion 610 is first selected, and then the plug plate 331 is inserted into the plug hole 302 so that the second latching teeth 332 engage between two adjacent first latching teeth 611, thereby quickly locking the deflection angle of the cylindrical portion 610. The cooperation between the first latching teeth 611 and the second latching teeth 332 facilitates precise adjustment of the installation angle of the cylindrical portion 610. In some embodiments, multiple first latch teeth 611 located at the same height constitute a group of latch teeth. Multiple groups of latch teeth are provided, and the multiple groups of latch teeth are distributed at intervals along the axial direction of the cylindrical portion 610. An annular plate 620 is provided between two adjacent groups of latch teeth. The plug-in plate 331 abuts between two adjacent annular plates 620 to limit the axial movement of the cylindrical portion 610, thereby facilitating people to adjust the installation height of the cylindrical portion 610 by abutting the plug-in plate 331 against the annular plates 620 at different heights, so that the nozzle 600 can better spray water toward the water inlet channel 500.

[0052] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0053] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the claims and their equivalents.

Claims

1. A toilet flushing device, characterized in that: include: A water inlet valve (200) for connecting to an external water supply pipeline; A drain valve (300) is provided with a connecting pipe (310) communicating with the water inlet valve (200); A spray head (600) is provided on the drain valve (300), and the spray head (600) is connected to the connecting pipe (310) to spray water into the water inlet channel (500); a control mechanism, provided on the water inlet valve (200) or the water discharge valve (300), for opening or delaying the water flow of the connecting pipe (310) to control the water spraying time of the nozzle (600); The control mechanism is a first control mechanism (700) linked to the water inlet valve (200). The first control mechanism (700) comprises a cylinder (710), a first piston (720), a second piston (730), a first elastic member (740) and a water discharge structure. The cylinder (710) is provided with an inner cavity extending in a vertical direction. The first piston (720) is connected to the second piston (730). The second piston (730) divides the inner cavity into a first water storage area (711) and a second water storage area (712) distributed in an upper and lower direction. The first water storage area (711) is connected to the water outlet end of the water inlet valve (200). The water discharge structure is used to adjust the second water storage area. The cylinder body (710) is provided with a first channel (714), the first channel (714) being connected to the first water storage area (711) and the connecting pipe (310), and during the process of the water inlet valve (200) discharging water into the first water storage area (711), the water discharge structure can unload the water in the second water storage area (712), so that the second piston (730) drives the first piston (720) to move to block the first channel (714) under the action of the water pressure of the first water storage area (711), and the first elastic member (740) contacts the second piston (730) to drive the second piston (730) to reset.

2. A toilet flushing device according to claim 1, characterized in that: The drainage structure comprises a switch component (750) and a plurality of drainage holes (713) of different diameters. The drainage holes are provided at the lower end of the cylinder body (710). Each of the drainage holes (713) can connect the second water storage area (712) and the water tank (400). The switch component is provided at the lower end of the cylinder body (710). The switch component (750) is used to selectively open any one of the drainage holes (713).

3. A toilet flushing device according to claim 1, characterized in that: The first piston (720) includes a mounting member (721), a partition plate (722) and a panel member (723). The outer wall of the panel member (723) is attached to the inner wall of the cylinder body (710). The partition plate (722) is connected between the mounting member (721) and the panel member (723). The three together define at least two connecting channels (724) connected to the first water storage area (711).

4. A toilet flushing device according to claim 1, characterized in that: The connecting pipeline (310) comprises a first pipeline (311) and a second pipeline (312) that are interconnected. The control mechanism is a second control mechanism (800) that is linked to the drain valve (300). The second control mechanism (800) comprises a main body (810), a water sealing member (820), a second elastic member (830) and a connecting rod assembly (840). One end of the first pipeline (311) is connected to the water outlet end of the water inlet valve (200). A first installation cavity (811) is provided between the main body (810) and the second pipeline (312). One end of the second pipeline (312) away from the main body (810) is connected to the nozzle (600). The water sealing member (820) is movably built into the first installation cavity (811), and the water sealing member (820) separates the first installation cavity (811) into a first chamber and a second chamber, and the second chamber is connected to the first pipe (311) and the second pipe (312). The main body (810) is provided with a pressure relief structure for changing the pressure of the first chamber, and the connecting rod assembly (840) is linked to the pressure relief structure so that the pressure relief structure can reduce the pressure of the first chamber and drive the water sealing member (820) to move and open the second chamber, and the second elastic member (830) is linked to the connecting rod assembly (840) to drive the connecting rod assembly (840) to reset.

5. A toilet flushing device according to claim 4, characterized in that: The second control mechanism (800) further includes a damping member (860), the main body (810) has a second mounting cavity (813) for accommodating the damping member (860), the connecting rod assembly (840) includes a moving rod (841), a connecting rod (842) and a lever member (843), the moving rod (841) is vertically accommodated in the second mounting cavity (813), the upper end of the moving rod (841) is rotatably connected to the lever member (843) through the connecting rod (842), the lever member (843) is swung around a fixed point and is arranged on the drain valve (300), the drain valve (300) is provided with a button (320) for driving the lever member (843) to swing, the moving rod (841) is passed through the damping member (860), and the damping member (860) is used to generate resistance to hinder the movement of the moving rod (841), and the second elastic member (830) is provided between the moving rod (841) and the inner top wall of the main body (810). When the button (320) drives the lever member (843) to swing, the moving rod (841) moves upward to compress the second elastic member (830), and enables the pressure relief structure to reduce the pressure of the first chamber.

6. A toilet flushing device according to claim 5, characterized in that: The pressure relief structure includes a pressure relief hole (812) and a blocking piece (850), wherein the pressure relief hole (812) communicates with the first chamber and the second installation cavity (813), and the blocking piece (850) is arranged at the lower end of the moving rod (841), and the moving rod (841) drives the blocking piece (850) to move to open or close the pressure relief hole (812).

7. A toilet flushing device according to claim 5, characterized in that: The main body (810) includes a barrel (814) and an end cover (815), the inner wall of the barrel (814) encloses the second mounting cavity (813), the end cover (815) is threadedly connected to the upper end of the barrel (814), the moving rod (841) is provided with a flat plate portion, and the second elastic member (830) abuts between the inner top wall of the end cover (815) and the flat plate portion.

8. The toilet flushing device according to claim 1, characterized in that: The drain valve (300) is provided with a mounting channel (301) and a plug hole (302), wherein the mounting channel (301) is connected to the connecting pipe (310), and the plug hole (302) is connected to the mounting channel (301), and the nozzle (600) is rotatably accommodated in the mounting channel (301). The drain valve (300) further comprises a locking member (330), wherein the locking member (330) is provided with a plug plate (331) which can be inserted into the plug hole (302), and the plug plate (331) is pressed against the outer wall of the nozzle (600) to lock the deflection angle of the nozzle (600) relative to the drain valve (300).

9. A toilet flushing device according to claim 8, characterized in that: The nozzle (600) comprises a cylindrical portion (610) connected to the installation channel (301), and the cylindrical portion (610) is provided with a plurality of first latching teeth (611) at the same height distributed circumferentially along its outer peripheral wall. The plug-in plate (331) is provided with a plurality of second latching teeth (332) on the side facing the plug-in hole (302), and the second latching teeth (332) are engaged between two adjacent first latching teeth (611) to limit the deflection angle of the nozzle (600).

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