Flush damper nozzle for a flush toilet

Abstract

The application discloses a flushing damping nozzle applied to a flush-down toilet, which comprises a connecting pipe, a mounting ring arranged in the connecting pipe, and a valve core arranged in the connecting pipe and inserted with the mounting ring. The valve core is a shell-shaped structure with an open rear end face. At least two water passing holes are arranged in the valve core in a circumferential direction at a position where a front end wall and a side wall are connected. The water passing holes are located in a front chamber of the connecting pipe. A water baffle is arranged in a rear chamber of the connecting pipe and is located in axial alignment with the rear side of the valve core and the rear end face of the valve core. The flushing water is divided into multiple water streams entering from the multiple water passing holes. Different water streams are incidentally collided from multiple directions towards the inside of the valve core. After flowing out of the valve core, the water streams encounter the water baffle again, bypass the water baffle and then flow out of the connecting pipe and into the toilet brush ring, so as to effectively slow down the flow rate of the flushing water and avoid splashing or rotating out of the toilet of the flushing water in the brush ring.

Description

Technical Field

[0001] This invention relates to a flushing nozzle, and more particularly to a flushing damping nozzle for use in a washdown toilet. Background Technology

[0002] A flush toilet is a type of toilet that uses the flushing force of water to expel waste. Existing flush toilets include direct flush toilets and weak siphon flush toilets with a short S-bend. The flushing hole is located in the toilet brush ring. Water flows through the flushing hole into the brush ring by relying on the potential energy of the wall-mounted water tank or the kinetic energy of the built-in water pump. This energetic water flows down the toilet bowl to wash the surface and push waste out of the toilet.

[0003] To avoid the numerous hidden dangers and maintenance costs associated with in-wall water tanks, most washdown toilets now use a water pump to generate kinetic water that flows through the flushing holes into the brush ring. However, due to the varying performance of water pumps from different manufacturers, the diversity of ceramic materials (due to different toilet shapes), and the inconsistent dimensions of the brush ring's curved transition surface, simply adjusting the pump's performance parameters is insufficient to effectively flush the toilet bowl and remove waste from the bottom of the pot.

[0004] Specifically, with a fixed pipe resistance, for the same water pump, as the voltage or duty cycle increases, both the outlet pressure and flow rate will increase simultaneously. However, in reality, to meet the water conservation standards of various countries and regions, for a given ceramic bowl, the pump only utilizes a few operating points. If the water pump's supply pressure is set to a lower value, the water flow rate will be insufficient to promptly flush away waste from the toilet bowl. Although delayed water supply can remove waste, it wastes more water, resulting in poor overall water-saving performance of the toilet. Furthermore, to meet the water conservation standards of various countries and regions, the bowl of a washdown toilet is usually relatively short. Therefore, when the water pump's supply pressure is at a higher value, although flushing performance is improved, water inside the brush ring will swirl out from the side of the bowl. Moreover, excessive water pressure can easily cause water flow noise or even draw in air, affecting the final flushing effect. In other words, it is difficult to achieve optimal flushing performance by adjusting the water pump's operating pressure, and the adjustment is very complex, not to mention the differences in the structure of different toilets. Summary of the Invention

[0005] This invention provides a flushing damping nozzle for washdown toilets, which overcomes the shortcomings of the prior art, preventing water splashing while meeting water-saving performance requirements, thus giving the toilet better flushing performance. The technical solution adopted by this invention to solve its technical problem is as follows:

[0006] A flushing damping nozzle for a washdown toilet includes a connecting pipe for connecting to the flushing holes of a brush ring. The inlet end of the connecting pipe's inner cavity is defined as the front end, and the outlet end as the rear end. A mounting ring is provided inside the connecting pipe, dividing the inner cavity into a front chamber and a rear chamber by the mounting ring. The nozzle also includes a valve core disposed within the connecting pipe and inserted into the mounting ring. The valve core is a shell-like structure with an open rear end. At least two water passage holes are arranged in a circumferential array at the connection point between the front wall and the side wall of the valve core. These water passage holes are located within the... The connecting pipe has a front chamber where the water passage is inclined with the inlet end forward and the outlet end backward. This causes the axis of the water passage to intersect obliquely with the inner axis of the connecting pipe. A baffle plate is located in the rear chamber of the connecting pipe, positioned behind the valve core and axially aligned with the rear end face of the valve core. Flushing water enters the front chamber of the connecting pipe from the front end and flows backward along the water passage, splitting into multiple streams that flow inward and obliquely backward into the valve core. The flushing water then flows out of the valve core and into the rear chamber of the connecting pipe, bypassing the baffle plate from the side before exiting the connecting pipe. In a preferred embodiment, the inner wall of the water passage has a guide slope near the outlet end, causing the water flow to deflect towards the inner axis of the connecting pipe under the guidance of the guide slope.

[0007] In a preferred embodiment: the guide slope is an arc-shaped surface, and when viewed from the water inlet end of the water passage, the guide slope is a concave arc surface.

[0008] In a preferred embodiment: the valve core is provided with a raised ring around the water passage hole to increase the length of the water passage hole.

[0009] In a preferred embodiment: the convex ring is located on the outer surface of the valve core.

[0010] In a preferred embodiment, the number of water passage holes is four.

[0011] In a preferred embodiment, the size of the baffle plate is at least able to cover the rear end face of the valve core.

[0012] In a preferred embodiment: the outer surface of the valve core sidewall has a retaining ring in the middle and a barb at the rear end, the retaining ring and the barb clamping the mounting ring from the front and rear.

[0013] In a preferred embodiment, the device further includes a fastening nut for locking the connecting pipe to the toilet. The fastening nut is fitted over the connecting pipe and the two are threaded together. The rear end of the connecting pipe has an outwardly expanding tapered opening. The device also includes a water inlet nut, which is screwed onto the front end of the connecting pipe.

[0014] Compared with the prior art, this technical solution has the following advantages:

[0015] 1. When the water pump delivers kinetic energy water (flushing water) under sufficient water pressure, it enters the connecting pipe and is divided into multiple streams through the water passage holes, flowing into the valve core. These different streams collide and impact each other from multiple directions within the valve core. After exiting the valve core, they are blocked by the baffle plate, bypassing it and flowing out of the connecting pipe into the toilet brush ring. This effectively reduces the flow rate of the flushing water, preventing splashing or overflowing from the brush ring. Therefore, this system prevents splashing while maintaining water-saving performance, ensuring good flushing performance in the washdown toilet. It also improves the compatibility of the water pump; a high-pressure water pump paired with the flushing nozzle can prevent splashing and is suitable for various washdown toilet structures, thus eliminating the need for engineers to perform complex pump parameter adjustments.

[0016] 2. The guide ramp makes the multiple water streams passing through the water passage more concentrated and collide together, thus improving the effect of reducing flow velocity.

[0017] 3. Increasing the length of the water passage hole can make the water flow direction more stable, so that multiple water streams can travel better along the designed route, resulting in better impact and a more significant reduction in flow velocity.

[0018] 4. The convex ring is located on the outer surface of the valve core. The convex ring blocks the flushing water before it enters the water passage, further reducing the flow rate.

[0019] 5. The fastening nut and tapered opening clamp the flushing hole wall from both the front and back, making installation convenient. The inlet nut facilitates connection to the pipeline. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] Figure 1 A schematic diagram illustrating the application of the present invention to a flushing damping nozzle in a washdown toilet is shown.

[0022] Figure 2 The diagram illustrates the connection of the flushing damping nozzle of the present invention applied to a washdown toilet in a cross-sectional view.

[0023] Figure 3 It is illustrated Figure 2 The diagram shows an exploded view of the scouring damping nozzle.

[0024] Figure 4 It is illustrated Figure 2 A three-dimensional schematic diagram of the valve core of the scouring damping nozzle is shown. Detailed Implementation

[0025] Please refer to Figures 1 to 4The flush toilet 10 uses a water pump 20 to generate kinetic water or flushing water. The kinetic water or flushing water enters the brush ring 12 through the flushing hole to scrub the surface of the toilet and push the waste out. The flushing damping nozzle 30 is applied to the flush toilet 10 and is installed in the flushing hole. That is, the kinetic water or flushing water enters the brush ring 12 after flowing out of the flushing damping nozzle 30.

[0026] Specifically, the flushing damping nozzle 30 includes a connecting pipe 32 for docking with the flushing holes of the brush ring. For ease of description, the water inlet end of the inner cavity of the connecting pipe 32 is defined as the front end, and the water outlet end is defined as the rear end. A mounting ring 321 is provided inside the connecting pipe 32. The inner cavity of the connecting pipe 32 is axially divided into a front chamber 322 and a rear chamber 323, with the mounting ring 321 as the boundary; that is, the front side is the front chamber, and the rear side is the rear chamber. The flushing damping nozzle 30 also includes a valve core 34 disposed within the connecting pipe 32 and inserted into the mounting ring 321. The valve core 34 is a shell-like structure with an open rear end face, having a front wall 342 and a side wall 343. The valve core 34 located in the front chamber 322 of the connecting pipe has at least two water passage holes 341 arranged in a circumferential array at the junction of the front end wall 342 and the side wall 343. These water passage holes 341 are inclined with the inlet end forward and the outlet end backward, so that the axis of the water passage hole 341 intersects the inner axis of the connecting pipe 32 at an incline. Understandably, for the valve core 34, the water passage hole is the water inlet channel, and the open end face is the water outlet channel. A baffle plate 324 is provided in the rear chamber 323 of the connecting pipe. The baffle plate 324 is located behind the valve core 34 and is axially aligned with the front of the rear end face of the valve core, i.e., the front of the baffle plate faces the valve core. During operation, flushing water enters the front chamber 322 of the connecting pipe from the front end to the rear, flows along the water passage 341 into the valve core and then obliquely into the valve core 34. These water flows from the water passage collide with each other, and the different water flows mix and then flow out of the valve core 34 and into the rear chamber 323 of the connecting pipe. After hitting the baffle 324, it bypasses the baffle from the side and finally flows out of the connecting pipe 32, and then enters the toilet brush ring 12.

[0027] In this embodiment, the angle between the axis of the water passage 341 and the inner axis of the connecting pipe 32 is 40 degrees, preferably between 20 and 80 degrees. After the flushing water flows through the water passage and is blocked by the baffle, the flow velocity is reduced, slowing down the originally aggressive water flow and improving the overall flushing effect. Furthermore, manufacturers do not need to select different water pumps for different types of flush toilets, nor do they need to adjust parameters after selecting a water pump. A high-efficiency water pump matched with a flushing damping nozzle can meet the requirements of flushing performance and water saving performance, and prevent water splashing. Preferably, the inner wall of the water passage 341 is provided with a guide slope 347 near the water outlet. Under the guidance of the guide slope 347, the water flow is deflected towards the inner axis of the connecting pipe 32. More preferably, the guide slope 347 is an arc-shaped surface. When viewed from the water inlet end of the water passage 341, the guide slope 347 is a concave arc surface.

[0028] Preferably, the valve core 34 is provided with a raised ring 346 around the water passage hole 341, thereby increasing the length of the water passage hole 341. More preferably, the raised ring 346 is located on the outer surface of the valve core, so that the water flow is intercepted by the raised ring before the water flow enters the valve core.

[0029] Preferably, the number of water passage holes 341 is four.

[0030] Preferably, the size of the baffle plate 324 is at least able to cover the rear end face of the valve core 34, that is, the baffle plate can just cover the open opening of the rear end face of the valve core, or even larger, so as to intercept the water flow as much as possible.

[0031] Preferably, the outer surface of the valve core sidewall 343 has a retaining ring 344 in the middle and a barb 345 at the rear end, the retaining ring 344 and the barb 345 clamping the mounting ring 321. Understandably, to facilitate the insertion of the valve core and the mounting ring, the sidewall 343 of the valve core 34 is cut with clearance grooves on both sides of the barb 345, so that the barb 345 has better deformation capability and can better squeeze through the mounting ring.

[0032] Preferably, it also includes a fastening nut 36 for locking the connecting pipe 32 onto the toilet 10. The fastening nut 36 is fitted onto the connecting pipe 32 and the two are threaded together. The rear end of the connecting pipe 32 has an outwardly expanding tapered opening 325. During installation, the fastening nut 36 and the tapered opening 325 cooperate to clamp and fix it onto the flushing hole.

[0033] Preferably, it also includes a water inlet nut 38, which is screwed onto the front end of the connecting pipe 32.

[0034] The above description is merely a preferred embodiment of the present invention, and therefore should not be construed as limiting the scope of the present invention. All equivalent changes and modifications made in accordance with the scope of the patent and the contents of the specification should still fall within the scope of the present invention.

Claims

1. A flushing damping nozzle for a washdown toilet, comprising a connecting pipe for engaging with a brush ring, wherein the water inlet end of the connecting pipe's inner cavity axis is defined as the front end, and the water outlet end as the rear end, characterized in that: The connecting pipe has an installation ring inside, and the inner cavity of the connecting pipe is divided into a front chamber and a rear chamber by the installation ring. It also includes a valve core disposed in the connecting pipe and inserted into the installation ring. The valve core is a shell-shaped structure with an open rear end. At least two water passage holes are arranged in a circumferential array at the position where the front wall and the side wall of the valve core are connected. The water passage holes are located in the front chamber of the connecting pipe. The water passage holes are inclined with the inlet end forward and the outlet end backward. Thus, the axis of the water passage hole intersects the axis of the inner cavity of the connecting pipe at an inclination. A baffle plate is provided in the rear chamber of the connecting pipe. The baffle plate is located behind the valve core and is axially aligned with the rear end face of the valve core. The flushing water enters the front chamber of the connecting pipe from the front end to the rear end, splits into multiple streams along the water passage holes, flows inward and obliquely backward into the valve core, and flows out of the valve core and into the rear chamber of the connecting pipe. It then flows out of the connecting pipe after bypassing the baffle plate from the side.

2. The flushing damping nozzle for a washdown toilet according to claim 1, characterized in that: The inner wall of the water passage is provided with a guide slope near the water outlet end, and the water flow is deflected towards the inner axis of the connecting pipe under the guidance of the guide slope.

3. The flushing damping nozzle for a washdown toilet according to claim 2, characterized in that: The guide slope is an arc-shaped surface, and when viewed from the water inlet end of the water passage, the guide slope is a concave arc surface.

4. The flushing damping nozzle for a washdown toilet according to claim 1, characterized in that: The valve core has a raised ring around the water passage hole to increase the length of the water passage hole.

5. The flushing damping nozzle for a washdown toilet according to claim 4, characterized in that: The convex ring is located on the outer surface of the valve core.

6. The flushing damping nozzle for a washdown toilet according to any one of claims 1 to 5, characterized in that: The number of water passage holes is four.

7. The flushing damping nozzle for a washdown toilet according to claim 1, characterized in that: The size of the baffle plate is at least large enough to cover the rear end face of the valve core.

8. The flushing damping nozzle for a washdown toilet according to claim 1, characterized in that: The valve core has a retaining ring in the middle and a barb at the rear end on the outer surface of its side wall. The retaining ring and the barb clamp the mounting ring from the front and rear.

9. The flushing damping nozzle for a washdown toilet according to claim 1, characterized in that: It also includes a fastening nut for locking the connecting pipe to the toilet, the fastening nut being fitted onto the connecting pipe and the two being threaded together, the rear end of the connecting pipe having an outwardly expanding tapered opening, and also includes a water inlet nut, the water inlet nut being screwed onto the front end of the connecting pipe.

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