Siphon nozzle of closestool

Abstract

The invention discloses a siphon nozzle of a closestool, and relates to the field of bathroom accessories. The device comprises a sealing cover and a barrel, threads are arranged on the outer wall of the barrel, a water inlet is formed in the free end of the barrel, at least two water spraying openings are formed in the sealing cover, and the calibers of the water spraying openings are gradually increased from the water inlet end to the water outlet end; a wedge-shaped flow dividing body extending into the barrel is further formed on the sealing cover, and the small end of the flow dividing body is located in the barrel and faces the water inlet; the water injection nozzles are annularly arrayed or symmetrically distributed or crosswise distributed around the flow divider, and each water injection nozzle takes the outer peripheral surface of the large end of the flow divider as one of the hole wall surfaces. The invention has the beneficial effects that the water injection nozzle is additionally arranged on the sealing cover, and the gradual reduction of the water outlet area in the barrel and the gradual increase of the water outlet diameter of the water injection nozzle are coordinated to optimize the flow velocity distribution of the water flow, reduce the head loss, reduce the noise, improve the water flow stability, enhance the water-saving effect and improve the use experience of a user; meanwhile, the mounting angle adjusting difficulty is reduced.

Description

Technical Field

[0001] The invention belongs to the field of sanitary ware and toilets, and in particular to a siphon nozzle of a toilet. Background Art

[0002] The toilet is a common sanitary ware in the bathroom, used for people to excrete waste. A siphon toilet is a toilet that uses the siphon principle to discharge sewage. Its sewage pipe is usually in an "S" shape that is tilted sideways. This design enables the siphon toilet to generate strong suction when flushing, thereby effectively discharging the sewage. The water spray port set on the siphon toilet is a key part to achieve its unique flushing mechanism. The water spray port on the siphon toilet is set in various forms, and the common forms are vortex siphon and jet siphon. Among them, the jet siphon is to add one or more jet auxiliary channels at the bottom of the toilet and align them with the center of the sewage outlet. When flushing, part of the water flows out from the water distribution holes around the toilet seat, and part of it is sprayed out from the jet port. The water sprayed from the jet port has a large water flow impulse, which quickly flushes away the sewage. At the same time, because the jet flow is carried out underwater, the noise during flushing is reduced.

[0003] When the toilet is currently produced, a hole for the jet is reserved on the toilet. When it is subsequently installed for the user, a nozzle is installed in the jet and water is sprayed through the nozzle. The commonly used nozzles are usually equipped with a single crescent-shaped water jet at the head of the nozzle. After the water flows out through the water jet, the toilet is flushed. However, the crescent-shaped water jet will cause uneven water flow distribution, making it difficult to effectively remove dirt, resulting in poor flushing effect. In addition, when assembling the nozzle, it is necessary to control the assembly angle of the crescent-shaped water jet. In the actual installation process, the installation operation is difficult due to the small operating position in the toilet. If the installer is not careful and irresponsible, the installation angle of the nozzle will deviate, thereby affecting the flushing effect. In addition, during the installation of the nozzle, it is difficult to judge the installation angle of the water jet, which makes it impossible to correct its installation position in time, resulting in certain limitations in the installation and use of the commonly used nozzles. Summary of the invention

[0004] In order to solve the problem that the cleaning effect of a single water outlet of the nozzle is poor and the installation is laborious, the present invention provides a siphon nozzle for a toilet. A water outlet is added to the cover, and the water outlet area in the cylinder is gradually reduced and the water outlet diameter of the water outlet is gradually increased to coordinate operation, thereby optimizing the flow velocity distribution of the water flow, reducing the head loss, reducing noise, improving the stability of the water flow, enhancing the water-saving effect, improving the user experience, and reducing the difficulty of adjusting the installation angle.

[0005] The technical solution adopted by the present invention is: to provide a siphon nozzle for a toilet, including a cover and a cylinder, the outer wall of the cylinder is provided with a thread, a water inlet is opened at the free end, at least two water spray outlets are opened on the cover, and the diameter of the water spray outlet gradually increases from the water inlet end to the water outlet end; the cover is also formed with a wedge-shaped diverter body extending into the cylinder, the small end of the diverter body is located in the cylinder and faces the water inlet; the water spray outlets are arranged in a ring array around the diverter body or symmetrically distributed or cross-distributed, and each water spray outlet uses the outer peripheral surface of the large end of the diverter body as one of the hole wall surfaces.

[0006] When assembling the nozzle with the toilet, after the barrel is inserted into the jet port on the toilet, the sealing cover on the barrel abuts against the toilet wall, and after the nut is threadedly connected to the barrel, it is tightened and fixed on the toilet. After the water inlet at the free end of the barrel is connected to the external water source, the water flows into the barrel from the water inlet and contacts the formed diverter body on the sealing cover, and then flows along the outer surface of the diverter body to introduce the water flow into the water jet port, and the cross-sectional area of ​​the diverter body gradually increases along the water flow direction, so that the water outlet cross-sectional area in the barrel gradually decreases, thereby increasing the speed and pressure of the water flow. In addition, the outer surface of the diverter body is smooth, which reduces the water flow resistance and makes the water flow fast and smooth. When the water flows out from the water nozzle, the diameter of the water nozzle gradually increases from the water inlet end to the water outlet end, so that the flow area increases and the flow velocity decreases accordingly, avoiding excessive flow velocity to cause wear on the water nozzle structure and reduce head loss. The reduced flow velocity helps the water flow to smoothly transition from high-speed flow to low-speed flow, reduce water flow disturbance and turbulence, improve water flow stability, and reduce noise and vibration caused by turbulence. At the same time, the water outlet area is increased to ensure the jet cleaning effect.

[0007] To further optimize the technical solution, the inner wall of the cylinder is smooth, and the water channel in the cylinder narrows from the small end of the diverter body to the water inlet end of the water spray port.

[0008] The smooth inner wall of the cylinder reduces the water flow resistance, making the water flow smoothly and quickly in the nozzle, thereby reducing the head loss and improving the water flow delivery effect. The smooth inner wall of the cylinder is not easy to accumulate scale, nor is it easy to become a place for microorganisms to attach and reproduce, and it is not easy to breed bacteria and algae, which ensures water quality, reduces corrosion and wear on the nozzle, extends the service life of the nozzle, and reduces noise. At the same time, the narrowing of the water channel reduces the water flow area, thereby increasing the speed and pressure of the water flow, increasing the kinetic energy of the water, and improving the water flushing effect.

[0009] To further optimize the technical solution, the water spray outlet has a cross-sectional shape of a semicircle, a fan, a triangle, a quadrilateral, or a cross.

[0010] The water nozzle can be selected into a semicircular, fan-shaped, triangular, quadrilateral or cross shape according to the use requirements to improve the diversity and flexibility of use.

[0011] To further optimize the technical solution, the water spray outlet is an arc-shaped structure with a fan-shaped cross section, and the flow divider is a truncated cone.

[0012] The circular array setting of the fan-shaped water spray nozzles allows the water flow to cover the inner wall of the toilet more evenly, making the flushing effect more comprehensive, and optimizing the dynamic characteristics of the water flow, reducing hydraulic losses, as well as reducing the splashing of water and the generation of noise during flushing, thereby improving the flushing efficiency and reducing water consumption. At the same time, the frustum shape of the diverter body makes the water flow diversion more uniform, so that the water flow can be evenly introduced into the water spray nozzle to ensure the water spraying effect. The outer surface of the cone is smooth, which reduces the water flow resistance and makes the water flow speed increase and pressure increase directly and quickly.

[0013] To further optimize the technical solution, the flow divider includes a coarse frustum end and a fine frustum end, the coarse frustum end is formed on the cover, and a flow-cutting step surface is formed at the junction of the coarse frustum end and the cover.

[0014] The thick frustum end and the thin frustum end of the diverter body reduce the cross-sectional area of ​​the water flow, thereby increasing the speed and pressure of the water flow. At the same time, the interception step surface formed at the connection between the thick frustum end and the cover can withstand the impact of the water flow, protect the water nozzle, reduce the damage to the water nozzle caused by the water flow, and extend the service life of the water nozzle.

[0015] To further optimize the technical solution, the water spray outlet is a strip structure with a rectangular cross-section, and the flow divider is spindle-shaped.

[0016] The strip-shaped water spray outlets are symmetrically distributed on the cover, which can concentrate the water flow, ensure consistent water flow direction, enhance flushing force, and make the water flow directly impact the inner wall and bottom of the toilet, effectively pushing dirt to the drain outlet and reducing the adhesion of dirt in the toilet. The concentrated water flow can reduce splashing during flushing, ensure hygienic use, and reduce the collision between the water flow and the inner wall of the toilet, thereby reducing the noise generated during flushing.

[0017] To further optimize the technical solution, the inner wall of the cylinder is formed with a transition slope that shrinks inward from the small end of the flow divider to the water inlet end of the water spray port.

[0018] The transition slope cooperates with the diverter body to gradually reduce the cross-sectional area of ​​the water flow, thereby increasing the speed and pressure of the water flow and improving the flushing effect of the water flow.

[0019] To further optimize the technical solution, the water outlet area of ​​the water spray outlet is 21㎜²-240.5㎜².

[0020] To further optimize the technical solution, the cover is a regular hexagonal structure.

[0021] The hexagonal structure of the cover makes it easy to match it with the water nozzle to determine the assembly position and angle of the water nozzle. The hexagonal structure is a highly efficient shape in mechanics and can provide a larger support area than a circle or other polygon. It is convenient to use tools such as wrenches to apply force to it, reduce the possibility of slipping, and ensure assembly accuracy when tightening the nut.

[0022] To further optimize the technical solution, the ratio of the area of ​​the water inlet end to the water outlet end of the water spray port is 1:1.2-1:3.

[0023] When the area ratio of the water inlet end to the water outlet end of the water spray nozzle is 1:1.2-1:3, the water output effect is better and the flushing effect is better.

[0024] The beneficial effects of the present invention are: 1. The inner wall of the cylinder is smooth and flat, which reduces the friction between the water flow and the inner wall of the nozzle, reduces the resistance of the water flow, makes the water flow in the nozzle smooth and fast, reduces the head loss, improves the water flow transmission efficiency, and the inner wall of the cylinder is smooth and not easy to scale, and is not easy to become a place for microorganisms to attach and reproduce, and is not easy to breed bacteria and algae, ensuring water quality, reducing corrosion and wear on the nozzle, extending the service life of the nozzle, and reducing noise generation; 2. When the water spray outlet on the cover is a fan-shaped structure, it is distributed on the cover in the form of a circular array. The fan-shaped water spray outlets distributed in the circular array make the water flow distribution more uniform, avoiding excessive concentration of water flow. At the same time, the fan-shaped water spray outlet can cover a wider area, provide a wider cleaning area for the toilet, improve the flushing effect of the toilet, effectively improve the utilization rate of water, and achieve water-saving effect; 3. When the water spray outlet on the cover is a strip structure, it is symmetrically distributed on the cover. The symmetrically distributed strip water spray outlet can concentrate the water flow, enhance the flushing force, and make the water flow directly impact the inner wall and bottom of the toilet, effectively push the dirt to the sewage outlet, reduce the adhesion of dirt in the toilet, and the concentrated water flow can reduce splashing during flushing, ensure the use of hygiene, and ensure the flushing effect; 4. Before the water flows out through the water spraying port, the water flows in contact with the diverter body in the cylinder and flows along its surface, thereby introducing the water flow into the water spraying port. The cross-sectional area of ​​the diverter body along the water discharge direction gradually increases, which makes the water discharge cross-sectional area in the cylinder gradually decrease. In addition, the smooth outer surface of the diverter body makes the water flow increase speed and pressure quickly and directly, so that the water flows smoothly into the water spraying port, ensuring the water discharge effect; 5. When the cover is a polygonal structure, especially a hexagonal structure, it is convenient to use tools such as wrenches to constrain the cylinder, so that the nut can be tightened on the nozzle body to fix it and avoid the movement of the cylinder to ensure accurate assembly angles. The polygonal structure, especially the hexagonal structure, is matched with the water spray port, which is convenient for construction personnel to observe the installation angle and ensure flexibility of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the structure of the siphon nozzle of the second embodiment; Figure 2 This is a front structural schematic diagram of the siphon nozzle of the second embodiment; Figure 3 This is a schematic diagram of the back structure of the siphon nozzle of the second embodiment; Figure 4 This is a schematic diagram of the internal structure of the siphon nozzle of the second embodiment; Figure 5 is a schematic cross-sectional structure diagram of the siphon nozzle of the second embodiment; Figure 6 Schematic diagram of the structure of the siphon nozzle of the fourth embodiment; Figure 7 is a schematic cross-sectional structure diagram of the siphon nozzle of the fourth embodiment; Figure 8 Schematic diagram of the internal structure of the siphon nozzle of the fourth embodiment; Fig. 9 This is a schematic diagram of the structure of the siphon nozzle of the fifth embodiment; Fig.10 This is a schematic diagram of the front structure of the siphon nozzle of the fifth embodiment; Fig.11 This is a schematic diagram of the back structure of the siphon nozzle of the fifth embodiment; Fig.12 Schematic diagram of the internal structure of the siphon nozzle of the fifth embodiment; Fig.13 This is a schematic diagram of the cross-sectional structure of the siphon nozzle of the fifth embodiment. In the figure, 1, cylinder; 101, thread; 102, cover; 2, water spray nozzle; 3, flow distributor. DETAILED DESCRIPTION

[0026] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. Embodiment 1

[0027] Please see attached Figure 1-13The siphon nozzle of the toilet comprises a cover 102 and a cylinder 1. A thread 101 is arranged on the outer wall of the cylinder. A water inlet is provided at the free end of the cylinder 1. When the nozzle is assembled on the toilet, the cylinder 1 is inserted into the jet port reserved on the toilet. The cover 102 on the cylinder 1 is attached to the toilet wall. The cover is a regular polygon structure. The diameter of the circumscribed circle thereof is larger than the diameter of the cylinder 1. The cover 102 is in contact with the toilet wall, so as to limit the cylinder 1 and prevent it from being separated from the jet port, thereby ensuring assembly reliability. At least two water spray ports are provided on the cover. The water spout 2 and the cover 102 are arranged in a regular polygonal structure, so that the assembly position of the water spout 2 can be determined by the polygonal cover 102 to ensure the assembly accuracy. After the cover is set to a regular hexagonal structure, the assembly position of the water spout 2 can be determined, and the barrel 1 can be constrained and positioned with the help of tools such as a wrench, so that the nut can be connected to the thread 101 on the barrel 1 to tighten the barrel 1 and fix it on the toilet, so as to avoid the nozzle body 1 from deflecting and affecting the assembly accuracy of the water spout 2, and the use is more reliable; The thread 101 is arranged in the middle of the cylinder 1, and the cover 102 is flat with the thread 101. After being assembled with the spray port on the toilet, the assembly sealing is ensured. The cylinder 1 is connected to the external water source by means of a pipeline. A truncated cone-shaped plug connector is formed on the free end of the cylinder 1. The plug connector ensures the firmness of the pipeline plug-in, and the part can be set to a threaded structure to connect with the pipeline, ensuring the reliability and diversity of use; After the water flows into the cylinder from the water inlet of the cylinder 1, the inner wall of the cylinder 1 is smooth, which reduces the friction between the water flow and the inner wall of the nozzle, reduces the resistance of the water flow, makes the water flow in the nozzle smooth and fast, reduces the head loss, improves the water flow transmission efficiency, and the smooth inner wall of the cylinder 1 is not easy to scale, and is not easy to become a place for microorganisms to attach and reproduce, and is not easy to breed bacteria and algae, so as to ensure water quality, reduce corrosion and wear on the nozzle, extend the service life of the nozzle, and reduce noise generation; When the water flows into the cylinder 1, a wedge-shaped flow divider 3 extending into the cylinder 1 is formed on the cover, and the small end of the flow divider 3 is located in the cylinder 1 and faces the water inlet. When the water flows along the cylinder 1, it contacts the flow divider 3, and the flow divider 3 divides the water flow. The wedge-shaped structure of the flow divider 3 has a cross-sectional area that gradually increases along the direction of the water flow, causing the water outlet area to gradually decrease, thereby increasing the speed and pressure of the water flow, and the water flow flows along the outer surface of the flow divider 3. The outer surface of the flow divider 3 is smooth, reducing the water flow resistance. At least two water spray ports 2 are opened on the cover 102, and the water spray ports 2 are arranged in a circular array or symmetrically around the flow divider. Or cross-distribution, the diverted water flow is sprayed outward from the water nozzle 2, the diameter of the water nozzle gradually increases from the water inlet end to the water outlet end, and the outer peripheral surface of the large end of the water nozzle diverter is one of the hole wall surfaces, so that when the water flow is sprayed along the water nozzle 2, its flow area is increased and the flow velocity is reduced accordingly, avoiding excessive flow velocity to cause wear on the structure of the water nozzle 2 and reducing head loss. The reduced flow velocity helps the water flow to smoothly transition from high-speed flow to low-speed flow, reduce water flow disturbance and turbulence, improve water flow stability, and reduce noise and vibration caused by turbulence, while increasing the water outlet area to ensure the jet cleaning effect. Embodiment 2

[0028] Please see attached Figure 1-5 When the water flow is sprayed out from the water spout 2, the cross-sectional shape of the water spout 2 is semicircular, fan-shaped, triangular, quadrilateral or cross-shaped, so that the water spout 2 can be selected according to the use requirements. The water spout 2 is a water spout 2 of a suitable shape, which ensures the diversity of use. Taking the water spout 2 as a fan-shaped arc structure as an example, it is distributed in the cover 102 in a circular array. The small end of the upper splitter 3 narrows toward the water channel of the water inlet end of the water spout. The splitter 3 includes a thick truncated cone end and a thin truncated cone end. The thick truncated cone end is formed on the cover 102. The water flow in the cylinder 1 first contacts the thin truncated cone end of the splitter 3 and flows along the splitter 3. The outer surface of the diverter body 3 flows to divert the water flow. The outer surface of the diverter body 3 is smooth to reduce the water flow resistance, so that the water flow flows smoothly along the truncated surface and is sprayed outward after flowing into the water spray port 2. The annular array of the arc-shaped water spray port 2 is convenient for controlling its installation angle, and the arc-shaped structure of the water spray port 2 can not only increase the aesthetics of the product, but also make the water flow more evenly distributed to avoid the water flow being too concentrated at a certain point. At the same time, the arc-shaped water spray port 2 can cover a wider area, provide a wider cleaning area for the toilet, and improve the flushing effect of the toilet, thereby improving the utilization rate of water and achieving a water-saving effect; After assembling the nozzle on the test toilet, it was found through testing under the same water pressure that when the water outlet area of ​​the water outlet 2 is 21㎜², the water flow is concentrated and powerful, which helps to flush hard-to-reach areas in the toilet, such as edges and corners, and provides a strong impact force, which helps to remove stubborn stains. However, a smaller water outlet area will result in a smaller flushing coverage area, and multiple flushings are required to achieve the ideal cleaning effect. When the water outlet area of ​​the water outlet 2 is 50㎜², the water flow rate is relatively moderate, balancing the flushing force and coverage, so that the water flow can not only effectively flush the inner wall of the toilet, ensure the flushing effect, but also save water to a certain extent. When the water outlet area of ​​the water outlet 2 is 100㎜², the nozzle has a larger water outlet area, which increases the flushing coverage area, makes flushing faster and more comprehensive, and reduces the number of flushing times, but the flushing force is mild, which is suitable for removing loose dirt, and will increase water consumption and reduce the water-saving effect. When the water outlet area of ​​the water spray port 2 is 240.5㎜²㎜², the very large water outlet area can quickly cover the inner wall of the toilet, providing the widest flushing effect, which is suitable for large toilets, but it will cause the water flow to disperse, the water flow speed to decrease, the flushing force to be further mild, and more water and time to remove stubborn stains, and cause the water-saving effect to be further reduced. Embodiment 3

[0029] Please see attached Figure 4 , Attachment Figure 5 A retention step surface is formed at the junction of the thick truncated cone end of the diverter body 3 and the cover 102. When the water flows into the water outlet 2 along the diverter body 3, the water flows through the narrowed waterway at a higher speed and pressure, and then contacts the retention step surface, thereby reducing the impact force of the water flow, protecting the water outlet 2, reducing the wear and erosion of the water outlet 2 by the water flow, and extending the service life of the water outlet 2. Embodiment 4

[0030] Please see attached Figure 7-9 The water outlets 2 are cross-distributed. Taking the cross structure as an example, the diverter bodies 3 formed on the cover 102 are distributed in a ring array. The diverter bodies 3 are distributed between two adjacent water outlets 2. The diverter bodies 3 also gradually reduce the water outlet cross-sectional area along the cylinder 1, so as to increase the speed and pressure of the water flow, and spray it outward through the cross-shaped water outlets 2. The cross-shaped water outlets are helpful to control the direction of the water flow, and the toilet can be flushed from multiple directions, thereby increasing the flushing impact force and reducing water consumption. Embodiment 5

[0031] Please see attached Figure 6-10When the water flows out from the water spout 2, the water spout 2 is a strip structure with a rectangular cross section, which is symmetrically distributed on the cover 102. The water spout 2 is symmetrically distributed between the diverter bodies 3, and the diverter bodies 3 are spindle-shaped. When the water flows along the cylinder 1, the water flows along the surface of the diverter body 3 after contacting the diverter body 3. The smooth outer surface of the diverter body 3 reduces the water flow resistance, so that the water flows smoothly along the outer surface of the diverter body 3, and the inner wall of the cylinder 1 is formed with a constriction from the small end of the diverter body 3 to the water inlet end of the water spout 2. The transition slope cooperates with the diverter body 3 to gradually reduce the flow area of ​​the water along the cylinder 1, so that the water flow speeds up and increases the pressure. When the water flows out along the water spout 2, the strip structure of the water spout 2 can make the water flow more concentrated, enhance the flushing force, and make the water flow directly impact the inner wall and bottom of the toilet, effectively push the dirt to the sewage outlet, reduce the attachment of dirt in the toilet, and the concentrated water flow can reduce the splashing of water during flushing, ensure the use of hygiene, and ensure the flushing effect; After assembling the nozzle on the test toilet, it was found through testing under the same water pressure that when the water outlet area of ​​the water outlet 2 is 21㎜², the water flow is concentrated and powerful, which helps to flush hard-to-reach areas in the toilet, such as edges and corners, and provides a strong impact force, which helps to remove stubborn stains. However, a smaller water outlet area will result in a smaller flushing coverage area, and multiple flushings are required to achieve the ideal cleaning effect. When the water outlet area of ​​the water outlet 2 is 50㎜², the water flow rate is relatively moderate, balancing the flushing force and coverage, so that the water flow can not only effectively flush the inner wall of the toilet, ensure the flushing effect, but also save water to a certain extent. When the water outlet area of ​​the water outlet 2 is 100㎜², the nozzle has a larger water outlet area, which increases the flushing coverage area, makes flushing faster and more comprehensive, and reduces the number of flushing times, but the flushing force is mild, which is suitable for removing loose dirt, and will increase water consumption and reduce the water-saving effect. When the water outlet area of ​​the water spray port 2 is 240.5㎜²㎜², the very large water outlet area can quickly cover the inner wall of the toilet, providing the widest flushing effect, which is suitable for large toilets, but it will cause the water flow to disperse, the water flow speed to decrease, the flushing force to be further mild, and more water and time to remove stubborn stains, and cause the water-saving effect to be further reduced.

[0032] The working principle of the siphon nozzle of the toilet is as follows: according to the use requirements, the strip-shaped water spray outlets 2 symmetrically distributed on the cover 102 or the arc-shaped water spray outlets 2 in a circular array on the cover 102 can be selected. The circular array of the arc-shaped water spray outlets 2 is convenient for controlling its installation angle, and the arc-shaped structure of the water spray outlet 2 can not only increase the aesthetics of the product, but also make the water flow distribution more uniform, avoiding the water flow from being too concentrated on a certain point. At the same time, the arc-shaped water spray outlet 2 can cover a wider area, provide a wider cleaning area for the toilet, improve the flushing effect of the toilet, thereby improving the utilization rate of water and achieving a water-saving effect. The strip-shaped water spray outlet 2 can concentrate the water flow more, enhance the flushing force, make the water flow directly impact the inner wall and bottom of the toilet, effectively push the dirt to the sewage outlet, reduce the attachment of dirt in the toilet, and the concentrated water flow can reduce the splashing of water during flushing, ensure the use of hygiene, and ensure the flushing effect. When the cylinder 1 is assembled on the toilet, the regular polygon structure of the cover 102 is designed to match the distribution of the water spout 2, so that the assembly position and assembly angle of the water spout 2 can be easily determined by the position of the polygon structure to ensure assembly accuracy. The regular polygon structure of the head, especially the regular hexagonal structure, is convenient for using tools to constrain the cylinder 1, and after the cover 102 is against the toilet wall, the nut is tightened on the cylinder 1 to ensure assembly accuracy. After the cylinder 1 is connected to the water source using a pipeline, after the water flows into the cylinder 1, the inner wall of the cylinder 1 is smooth, reducing the water flow resistance, making the water flow smooth, and reducing noise. After the water flows in contact with the diverter 3 formed on the cover inside the cylinder 1, the water flows along the outer surface of the diverter 3 to divert the water. The wedge-shaped structure of the diverter body 3 gradually reduces the cross-sectional area inside the cylinder 1 along the direction of the water flow, thereby increasing the pressure and speed of the water flow. In addition, the outer surface of the diverter body 3 is smooth, which reduces the resistance, making the water flow pressurized and accelerated quickly and directly. When the increased water flow is ejected through the water spray port 2, the diameter of the water inlet end of the water spray port 2 gradually increases toward the water outlet end, thereby gradually increasing the water outlet area of ​​the water spray port, expanding the flushing area of ​​the toilet by the water flow, and ensuring the flushing water effect. At the same time, the gradually increasing diameter of the water spray port 2 reduces the water flow velocity, reduces the wear of the water flow on the water spray port 2, reduces the head loss, reduces the disturbance and turbulence of the water flow, improves the stability of the water flow, and reduces the noise and vibration caused by turbulence, thereby ensuring the user's experience.

Claims

1. A siphon nozzle for a toilet, comprising a cover (102) and a cylinder (1), wherein the outer wall of the cylinder is provided with a thread (101), and a water inlet is provided at the free end, characterized in that: The cover (102) is provided with at least two water spraying ports (2), and the diameter of the water spraying ports (2) gradually increases from the water inlet end to the water outlet end; the cover (102) is also formed with a wedge-shaped flow divider (3) extending into the cylinder (1), and the small end of the flow divider (3) is located in the cylinder (1) and faces the water inlet; the water spraying ports (2) are arranged in a circular array or symmetrically or crosswise around the flow divider (3), and each water spraying port (2) uses the outer peripheral surface of the large end of the flow divider (3) as one of the hole wall surfaces.

2. The siphon nozzle for a toilet according to claim 1, characterized in that: The inner wall of the cylinder (1) is smooth, and the water channel in the cylinder (1) narrows from the small end of the flow divider (3) to the water inlet end of the water spray port (2).

3. The siphon nozzle for a toilet according to claim 2, characterized in that: The water spray port (2) has a cross-sectional shape of a semicircle, a fan, a triangle, a quadrilateral or a cross.

4. The siphon nozzle for a toilet according to claim 3, characterized in that: The water spray port is a fan-shaped arc structure, and the flow divider (3) is a truncated cone.

5. The siphon nozzle for a toilet according to claim 3, characterized in that: The flow divider (3) comprises a coarse frustum cone end and a fine frustum cone end, the coarse frustum cone end is formed on the cover (102), and a flow-cutting step surface is formed at the junction of the coarse frustum cone end and the fine frustum cone end.

6. The siphon nozzle for a toilet according to claim 2, characterized in that: The water spray port (2) is a strip-shaped structure with a rectangular cross section, and the flow divider (3) is spindle-shaped.

7. The siphon nozzle for a toilet according to claim 6, characterized in that: The inner wall of the cylinder (1) is formed with a transition slope that shrinks inward from the small end of the flow divider (3) to the water inlet end of the water spray port (2).

8. The siphon nozzle for a toilet according to claim 1, 3 or 5, characterized in that: The water outlet area of ​​the water spray port (2) is 21 mm²-240.5 mm².

9. The siphon nozzle for a toilet according to claim 1, characterized in that: The sealing cover (102) is a regular hexagonal structure, and the diameter of the circumscribed circle is greater than the diameter of the cylinder.

10. The siphon nozzle for a toilet according to claim 1, 3 or 5, characterized in that: The ratio of the area of ​​the water inlet end to the water outlet end of the water spray port (2) is 1:1.2-1:3.

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