Flush nozzle for a flush toilet

Abstract

This invention discloses a flushing nozzle for a washdown toilet, comprising a connecting pipe with an installation ring inside. 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 within the connecting pipe and inserted into the installation 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 on the side wall of the front chamber of the connecting pipe. A baffle plate is disposed in the rear chamber of the connecting pipe, aligned with the rear side of the valve core and axially with the front of the rear end face of the valve core. The flushing water is divided into multiple streams entering from the multiple water passage holes. These different streams collide and impact each other towards the inside of the valve core from multiple directions. After flowing out of the valve core, the water encounters the baffle plate again, bypasses the baffle plate, and flows out of the connecting pipe into the toilet brush ring, thereby effectively reducing and buffering the flow rate of the flushing water and preventing the flushing water inside the brush ring from splashing or swirling out of the toilet.

Description

Technical Field

[0001] This invention relates to a flushing nozzle, and more particularly to a flushing 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 nozzle for a washdown toilet, 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 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. An installation ring is provided inside the connecting pipe, dividing the inner cavity into a front chamber and a rear chamber by the installation ring. The nozzle also includes a valve core disposed within the connecting pipe and inserted into the installation 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 on the side wall of the front chamber of the connecting pipe, with the water passage holes positioned near the inlet end. The rear water outlet is tilted forward, so that the axis of the water passage is inclined to intersect the axis of the inner cavity of the connecting pipe. A baffle plate is provided in the rear cavity of the connecting pipe. The baffle plate is located on the rear side of the valve core and is axially aligned with the rear end face of the valve core. The flushing water enters the front cavity of the connecting pipe from the front end to the rear, enters the valve core from the water passage inward and obliquely forward, is blocked by the front wall of the valve core, flows out of the valve core and enters the rear cavity of the connecting pipe, and after hitting the baffle plate, it bypasses the baffle plate from the side and finally flows out of the connecting pipe from the rear.

[0007] In a preferred embodiment: the sidewall of the valve core is provided with a raised ring around the water passage hole to increase the length of the water passage hole.

[0008] In a preferred embodiment: the convex ring is located on the outer surface of the sidewall of the valve core.

[0009] In a preferred embodiment, the number of water passage holes is four.

[0010] In a preferred embodiment, the size of the baffle plate is at least able to cover the rear end face of the valve core.

[0011] In a preferred embodiment: the front end wall of the valve core is arc-shaped and protrudes forward.

[0012] In a preferred embodiment: the front wall of the valve core is planar.

[0013] 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.

[0014] 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.

[0015] A flushing 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. An installation ring is provided inside the connecting pipe, dividing the inner cavity into a front chamber and a rear chamber by the installation ring. The nozzle also includes a valve core disposed within the connecting pipe and inserted into the installation ring. The valve core is a shell-like structure with an open rear end. At least two valve cores are arranged in a circumferential array on the side wall of the front chamber of the connecting pipe. A water passage is provided, which is arranged radially such that the axis of the water passage is perpendicular to the inner axis of the connecting pipe. 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, enters the valve core radially inward along the water passage, flows out of the valve core and enters the rear chamber of the connecting pipe, and after hitting the baffle plate, it bypasses the baffle plate from the side and finally flows out of the connecting pipe to the rear end.

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

[0017] 1. When the water pump delivers kinetic energy water (flushing water) under sufficient water pressure, it first bypasses the valve core's ring side after entering the connecting pipe. There, it splits into multiple streams entering through various water passages. These different streams collide and impact each other towards the inside of the valve core from multiple directions. After flowing out of the valve core, the flushing water encounters a baffle plate, bypasses it, and flows 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 pump's compatibility; a high-pressure 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.

[0018] 2. 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.

[0019] 3. The convex ring is located on the outer surface of the side wall of the valve core. The convex ring blocks the flushing water before it enters the water passage, further reducing the flow rate.

[0020] 4. The fastening nut and tapered opening clamp the brush ring's flushing hole wall, facilitating installation. The inlet nut allows for easy connection to pipelines. Attached Figure Description

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

[0022] Figure 1 A schematic diagram illustrating the application of the present invention to a flush nozzle in a washdown toilet is shown.

[0023] Figure 2 The diagram illustrates the connection of the flushing nozzle of the present invention applied to a washdown toilet in a cross-sectional view.

[0024] Figure 3 It is illustrated Figure 2 The diagram shows an exploded view of the flushing nozzle.

[0025] Figure 4 It is illustrated Figure 2 A three-dimensional schematic diagram of the valve core of the flushing nozzle shown.

[0026] Figure 5 It is illustrated Figure 2 The diagram shows the structural deformation of the valve core of the flushing nozzle.

[0027] Figure 6 It is illustrated Figure 2 Another structural deformation diagram of the valve core of the flushing nozzle is shown.

[0028] Figure 7 It is illustrated Figure 6 A three-dimensional schematic diagram of the valve core shown. Detailed Implementation

[0029] Example 1

[0030] Please refer to Figures 1 to 4 The 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 nozzle 30 is used in the flush toilet 10 and is installed in the flushing hole. That is, the kinetic water or flushing water flows out from the flushing nozzle 30 and then enters the brush ring 12.

[0031] Specifically, the flushing nozzle 30 includes a connecting pipe 32 for connecting 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 nozzle 30 also includes a valve core 34 disposed inside 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 has at least two water passage holes 341 arranged in a circumferential array on the side wall of the front chamber 322 of the connecting pipe. The water passage holes 341 are inclined with the inlet end towards the rear and the outlet end towards the front, so that the axis of the water passage holes 341 intersects the inner axis of the connecting pipe 32 at an incline. Understandably, for the valve core 34, the water passage holes are the water inlet channels, 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 obliquely forward into the valve core 34. These water flows from the water passage collide with each other, and the different water flows collide and mix. Then, they are blocked by the front wall 342 of the valve core and flow back out of the valve core 34 and into the rear chamber 323 of the connecting pipe. After hitting the baffle plate 324, they bypass the baffle plate from the side and finally flow back out of the connecting pipe 32. After flowing out, they enter the toilet brush ring 12.

[0032] In this embodiment, the angle between the axis of the water passage 341 and the inner axis of the connecting pipe 32 is 50 degrees, preferably between 30 and 70 degrees. After the flushing water flows through the impact of the water passage, the obstruction of the valve core front wall, and the baffle plate, 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 washdown toilets, nor do they need to adjust parameters after selecting a water pump. A high-efficiency water pump matched with the flushing nozzle can meet the requirements of flushing performance and water saving performance, and prevent water splashing.

[0033] Preferably, the sidewall of the valve core 34 is provided with a raised ring 346 around the water passage 341, thereby increasing the length of the water passage 341. More preferably, the raised ring 346 is located on the outer surface of the sidewall of the valve core, so that the water flow is intercepted by the raised ring before the water flow enters the valve core.

[0034] Preferably, the number of water passage holes 341 is four.

[0035] 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.

[0036] Preferably, the front end wall 342 of the valve core 34 is arc-shaped and convex forward, so that the water flow has a greater stroke after flowing forward and obliquely inward from the water passage 341. Understandably, the front end wall 342 of the valve core 34 can also be planar, such as... Figure 5 As shown.

[0037] 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.

[0038] Preferably, it also includes a fastening nut 36 for locking the connecting pipe 32 onto the toilet 10. The fastening nut 36 covers 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.

[0039] Preferably, it also includes a water inlet nut 38, which is screwed onto the front end of the connecting pipe 32.

[0040] Example 2

[0041] Please refer to Figure 6 and Figure 7 In the second embodiment, the flushing nozzle improves the structure of the valve core 34. The difference in the valve core 34 structure is that the water passage hole 341a is arranged radially, so that the axis of the water passage hole 341a is perpendicular to the inner cavity axis of the connecting pipe 32. Therefore, after the flushing water enters the valve core 34 radially inward along the water passage hole 341a, it directly collides head-on and can only flow backward due to the obstruction of the front wall 342 of the valve core 34. Of course, the front wall 342 of the valve core 34 can be flat or curved.

[0042] 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 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 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. The valve core has at least two water passage holes arranged in a circumferential array on the side wall of the front chamber of the connecting pipe. The water passage holes are inclined with the water inlet end towards the rear and the water outlet end towards the front, so that 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, enters the valve core from the water passage holes inward and obliquely forward, is blocked by the front end wall of the valve core, flows out of the valve core and enters the rear chamber of the connecting pipe, bypasses the baffle plate from the side and finally flows out of the connecting pipe from the rear end.

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

3. The flushing nozzle for a washdown toilet according to claim 2, characterized in that: The convex ring is located on the outer surface of the side wall of the valve core.

4. The flushing nozzle for a washdown toilet according to claim 1, 2, or 3, characterized in that: The number of water passage holes is four.

5. The flushing 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.

6. The flushing nozzle for a washdown toilet according to claim 1, characterized in that: The front wall of the valve core is arc-shaped and protrudes forward.

7. The flushing nozzle for a washdown toilet according to claim 1, characterized in that: The front wall of the valve core is planar.

8. The flushing 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 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.

10. A flushing 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 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 face. The valve core has at least two water passage holes arranged in a circumferential array on the side wall of the front chamber of the connecting pipe. The water passage holes are arranged radially, so that the axis of the water passage holes is perpendicular to the axis of the inner cavity of the connecting pipe. 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, enters the valve core radially inward along the water passage holes, flows out of the valve core and enters the rear chamber of the connecting pipe, bypasses the baffle plate from the side and finally flows out of the connecting pipe to the rear end.

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