A flushing structure of a siphon jet toilet

Abstract

The present invention discloses a flushing structure for a siphon jet toilet, which includes a toilet bowl, a sewage pipe and a seat ring. The toilet bowl includes a front wall surface, side wall surfaces and a rear wall surface. The seat ring is arranged on the top of the toilet bowl, and a flushing structure is arranged below the seat ring. The flushing structure includes a water distribution hole and a counter flushing hole arranged above the rear wall surface, and a water guiding edge extending from the counter flushing hole to the front end of the toilet bowl. The water guiding edge is located at the upper edges of the side wall surfaces and the front wall surface. The sewage pipe includes an inlet section and a connecting section. The inlet section extends downward and backward from the top to the bottom of the toilet bowl. The bottom of the inlet section is communicated with the connecting section, and the top is communicated with the bottom of the toilet bowl. The inner wall of the inlet section is smoothly transitioned with the front wall surface and forms a raised portion protruding towards the inner side of the toilet bowl or the inlet section with the rear wall surface. The present invention improves the flushing cleanliness and efficiency and avoids splashing during the flushing process.

Description

Technical Field

[0001] The present invention relates to the technical field of sanitary ware, and particularly to a flushing structure of a wash-down toilet. Background Art

[0002] A wash-down toilet is a toilet that directly discharges dirt by the impact force of flushing water. The difference between it and a siphon toilet is that only positive pressure is formed during the flushing and sewage discharge processes, without negative pressure, and only the gravitational acceleration of water can be used to flush the dirt clean. The flushing pipeline of a wash-down toilet is simple, the path is short and thick, and the flushing process is short.

[0003] Common wash-down toilets specifically include the pure water hole type and the surrounding type. The pure water hole type wash-down toilet evenly arranges a circle of small holes on the inclined concave surface of the inner wall of the seat ring, and the water in the seat ring water channel flows out from the small holes for flushing. The advantage of the pure water hole type wash-down toilet is uniform flushing. The disadvantages of the pure water hole type wash-down toilet are that there are many holes, the hole punching operation is complicated during the production process, and the water hole position is on the inclined surface recessed in the inner circle of the seat ring, which is easy to form a sanitary dead corner and is difficult to clean.

[0004] The surrounding type wash-down toilet is provided with two opposing holes at the rear end of the seat ring, forming a surrounding type opposing flushing method, and the washing is a double water flow design. The advantage of the surrounding type wash-down toilet is that there are few holes and the sanitary problems are easy to handle.

[0005] Figure 1 The following shows the flushing structure commonly adopted by existing wash-down toilets, which has the following disadvantages:

[0006] (1) There is a corner between the front wall surface of the toilet bowl and the upper end surface of the sewage inlet. The front-end water flow drops at the corner, collides with the bottom of the bile tip and scatters, and then converges and flushes into the pipeline. The flushing force is dispersed, and the flushing performance is reduced;

[0007] (2) The water flow direction in the auxiliary punching holes is affected by the hole direction and slope. Since the rear wall surface of the toilet bowl is relatively steep and the sewage inlet is almost a vertical structure, the auxiliary flushing water flow is easy to directly flush into the rear end of the sewage inlet, causing splashing;

[0008] (3) When flushing dirt, the auxiliary flushing water flow directly flushes down and collides with the main flushing water flow at the sewage inlet, forming a reverse flushing resistance, and the dirt is blocked by it and cannot all enter the sewage pipe, reducing the flushing performance. Summary of the Invention

[0009] The technical problem to be solved by the present invention is to provide a flushing structure of a wash-down toilet, which improves the flushing cleanliness and efficiency and avoids splashing during the flushing process.

[0010] To solve the above technical problem, the present invention provides a flushing structure of a wash-down toilet, including a toilet bowl, a sewage pipe and a seat ring,

[0011] The urinal includes a front wall surface, side wall surfaces, and a rear wall surface;

[0012] The seat ring is disposed on top of the urinal. A flushing structure is provided below the seat ring. The flushing structure includes a water distribution hole and a counter flushing hole disposed above the rear wall surface, and a water guiding edge extending from the counter flushing hole towards the front end of the urinal. The water guiding edge is located at the upper edges of the side wall surfaces and the front wall surface;

[0013] The sewage pipe includes an inlet section and a connection section. The inlet section extends downward and rearward towards the urinal. The bottom of the inlet section communicates with the connection section, and the top communicates with the bottom of the urinal. The inner wall of the inlet section is smoothly transitioned with the front wall surface, and forms a raised portion protruding towards the inner side of the urinal or the inlet section with the rear wall surface.

[0014] As an improvement to the above solution, the water flow flowing through the rear wall surface from the water distribution hole can directly converge with the water flow flowing through the water guiding edge and the front wall surface in sequence from the counter flushing hole on one side of the inlet section close to the front wall surface.

[0015] As an improvement to the above solution, the included angle of the raised portion is 100 - 160°.

[0016] As an improvement to the above solution, the slope difference between the front wall surface and the inlet section at the connected position is not greater than 30°.

[0017] As an improvement to the above solution, the cross-sectional area of the inner cavity of the inlet section gradually increases from bottom to top.

[0018] As an improvement to the above solution, the slope of the rear wall surface of the urinal < 85°, and the slope of the rear wall surface is greater than the slope of the front wall surface.

[0019] As an improvement to the above solution, a confluence groove is provided at the position where the inlet section is connected to the front wall surface.

[0020] As an improvement to the above solution, the seat ring is provided with a water retaining wall disposed around the water guiding edge. The inner side of the water guiding edge is connected to the urinal, and the outer side is connected to the water retaining wall. The radian of the water retaining wall at the end close to the counter flushing hole is 160 - 180°.

[0021] As an improvement to the above solution, the water distribution hole is tangent to the rear wall surface.

[0022] As an improvement to the above solution, the position where the connection section is connected to the inlet section is the lowest point of the inner cavity of the sewage pipe.

[0023] Implementing the present invention has the following beneficial effects:

[0024] The present invention discloses a flushing structure of a flush-down toilet. On the one hand, the inner wall of the inlet section and the front wall surface are designed into a smooth structure with a gentle transition. The entire flushing path of the main flushing water flow has no corners, and there is no situation in the flushing process where the flushing force is dispersed due to collision, resulting in a reduction in flushing performance. The main flushing water flow flowing out of the counter flushing holes passes through the water guiding edge, the side wall surface, and the front wall surface. The water flows in all directions on the side wall surface and the front wall surface are smoothly concentrated in the inlet section, forming a relatively large flushing resultant force;

[0025] On the other hand, the inner wall of the inlet section and the rear wall surface are designed into a raised part that arches towards the toilet bowl or the inlet section, which can adjust the direction of the auxiliary flushing water flow flowing out of the water distribution holes. Since the inlet section extends from top to bottom towards the rear of the toilet bowl, the auxiliary flushing water flow will fall in a parabolic shape when passing through the raised part and converge with the main flushing water flow on the side of the inlet section close to the front wall surface (i.e., the lower wall surface of the inner wall of the inlet section), without being blocked by the upper wall surface of the inner wall of the inlet section. The flushing functions of the main flushing water flow and the auxiliary flushing water flow reinforce each other, accelerating the discharge of dirt, and there will be no situation where the auxiliary flushing water directly flushes into the rear end of the bottom of the inlet section, causing splashing water, and there will be no situation where the auxiliary flushing water flow collides with the main flushing water flow to form a reverse flushing resistance, obstructing the dirt from entering the sewage pipe;

[0026] Among them, a small part of the splashing water generated when the auxiliary flushing water flow converges with the main flushing water flow in the inlet section is blocked by the side of the inlet section close to the rear wall surface (i.e., the upper wall surface of the inner wall of the inlet section), and this part of the blocked splashing water will continue to converge with the main flushing water flow and the auxiliary flushing water flow, avoiding water splashing outside;

[0027] The flushing structure of the flush-down toilet in this embodiment has a high flushing cleanliness. Using the water consumption of the first-level water efficiency of the toilet can meet the flushing effect, with good water-saving effect, and there is no splashing phenomenon during the flushing process. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a schematic structural diagram of a flushing structure commonly used in existing flush-down toilets;

[0029] Figure 2 is a three-dimensional structural schematic diagram of an embodiment of a flushing structure of a flush-down toilet according to the present invention;

[0030] Figure 3 is Figure 2 the schematic cross-sectional structure diagram of A-A of

[0031] Figure 4 is Figure 2 the schematic cross-sectional structure diagram of B-B of

[0032] Figure 5 is Figure 3 the schematic diagram of the flushing flow path of DETAILED DESCRIPTION OF THE INVENTION

[0033] To make the objectives, technical solutions and advantages of the present invention more clear, the present invention will be further described in detail below with reference to the accompanying drawings.

[0034] As Figures 2 to 5 shown, this embodiment provides an embodiment of a flushing structure of a flushing toilet, including a toilet bowl 1, a sewage pipe 2 and a seat ring 3. The toilet bowl 1 includes a front wall surface 11, side wall surfaces 12 and a rear wall surface 13. The seat ring 3 is arranged on the top of the toilet bowl 1. A flushing structure is provided below the seat ring 3. The flushing structure includes a water distribution hole 31 and a counter flushing hole 32 arranged above the rear wall surface 13, and a water guiding edge 33 extending from the counter flushing hole 32 to the front end of the toilet bowl 1. The water guiding edge 33 is located at the upper edges of the side wall surfaces 12 and the front wall surface 11. The sewage pipe 2 includes an inlet section 21 and a connecting section. The inlet section 21 extends downward and backward from the toilet bowl 1. The bottom of the inlet section 21 communicates with the connecting section, and the top communicates with the bottom of the toilet bowl 1. The inner wall of the inlet section 21 is smoothly transitioned with the front wall surface 11, and forms a raised portion a protruding inwardly towards the toilet bowl 1 or the inlet section 21 with the rear wall surface 13.

[0035] On the one hand, the inner wall of the inlet section 21 and the front wall surface 11 of this embodiment are designed into a smooth structure with a smooth transition. The entire flushing path of the main flushing water flow has no corners, and there is no situation where the flushing force is dissipated due to collision during the flushing process, resulting in a reduction in flushing performance. The main flushing water flow flowing out of the counter flushing hole 32 passes through the water guiding edge 33, the side wall surfaces 12 and the front wall surface 11. The water flows in all directions on the side wall surfaces 12 and the front wall surface 11 are smoothly concentrated at the inlet section 21, forming a greater flushing resultant force. On the other hand, the inner wall of the inlet section 21 and the rear wall surface 13 are designed into a raised portion a arched towards the toilet bowl 1 or the inlet section 21, which can adjust the direction of the auxiliary flushing water flow flowing out of the water distribution hole 31. Since the inlet section 21 extends downward and backward from the toilet bowl 1, the auxiliary flushing water flow will fall in a parabolic shape when passing through the raised portion a, and converges with the main flushing water flow on the side of the inlet section 21 close to the front wall surface 11 (i.e., the lower wall surface 211 of the inner wall of the inlet section 21), without being blocked by the upper wall surface 212 of the inner wall of the inlet section 21. The flushing functions of the main flushing water flow and the auxiliary flushing water flow are mutually enhanced, accelerating the discharge of dirt, and there will be no situation where the auxiliary flushing water directly flushes into the bottom rear end of the inlet section 21, causing splashing water, and the auxiliary flushing water flow collides with the main flushing water flow to form a reverse flushing resistance, obstructing the dirt from entering the sewage pipe 2. Among them, a small amount of splashing water generated when the auxiliary flushing water flow converges with the main flushing water flow in the inlet section 21 is blocked by the side of the inlet section 21 close to the rear wall surface 13 (i.e., the upper wall surface 212 of the inner wall of the inlet section 21). This part of the blocked splashing water will continue to converge with the main flushing water flow and the auxiliary flushing water flow, avoiding water splashing. The flushing structure of the flushing toilet in this embodiment has a high flushing cleanliness, can meet the flushing effect with the water consumption of the first-class water efficiency of the toilet, has a good water-saving effect, and there is no splashing water phenomenon during the flushing process.

[0036] The urinal 1 of this embodiment is surrounded by a front wall surface 11, a rear wall surface 13, and side wall surfaces 12 provided on both sides. When flushing, a part of the main flushing water flow flowing out of the flushing holes 32 directly flows into the inlet section 21 of the sewage pipe through the water guiding edge 33 and the side wall surface 12, a part flows into the inlet section 21 of the sewage pipe through the water guiding edge 33, the side wall surface 12, and the front wall surface 11, and another part flows into the inlet section 21 of the sewage pipe through the water guiding edge 33 and the front wall surface 11. The auxiliary flushing water flow flowing out of the water distribution holes 31 flows into the inlet section 21 of the sewage pipe through the rear wall surface 13.

[0037] To reduce the resistance loss when the auxiliary flushing water flow flowing out of the water distribution holes 31 flows through the rear wall surface 13, in this embodiment, it is preferably set that the water distribution holes 31 are tangent to the rear wall surface 13.

[0038] To make the auxiliary flushing water flow passing through the raised portion a fall in a parabolic shape, and make the auxiliary flushing water flow smoothly converge with the main flushing water flow on the side of the inlet section 21 close to the front wall surface 11 (i.e., the lower wall surface 211 of the inner wall of the inlet section 21), and make the water flow directions of the auxiliary flushing water flow and the main flushing water flow as consistent as possible when converging, reducing the generation of splashing during intersection, the included angle of the raised portion a in this embodiment is preferably 100 - 160°, and the slope of the rear wall surface 13 of the urinal 1 < 85°, and the slope of the rear wall surface 13 is greater than the slope of the front wall surface 11.

[0039] To improve the flushing effect of the front wall surface 11, enough main flushing water flow needs to flow through the water guiding edge 33 and over the front wall surface 11. In this embodiment, the seat ring 3 is provided with a water retaining wall 34 arranged around the water guiding edge 33. The inner side of the water guiding edge 33 is connected to the urinal 1, and the outer side is connected to the water retaining wall 34. The radian of the water retaining wall 34 near one end of the flushing holes 32 is 160 - 180°, thereby helping to reduce the resistance of the water retaining wall 34 to the main flushing water flow, enabling the main flushing water flow flowing out of the flushing holes 32 to flow more smoothly to the water guiding edge 33 at the front end of the urinal 1, and realizing the flushing of the front wall surface 11. In addition, when the pressure of the main flushing water flow flowing out of the flushing holes 32 is relatively large, it can also help to avoid the splashing problem caused by the blockage of the water retaining wall 34.

[0040] To minimize the resistance loss of the main flushing water flow during the process of flushing the front wall surface 11 and flowing into the inlet section 21, in this embodiment, the slope difference between the front wall surface 11 and the inlet section 21 at the connected position is not greater than 30°.

[0041] Preferably, a confluence groove b is provided at the position where the inlet section 21 is connected to the front wall surface 11. The confluence groove b is recessed 1 - 10 mm towards the front wall surface 11 and the inner wall of the inlet section 21, so as to help the main flushing water flow that has flushed the front wall surface 11 to gather here, and help to form a greater flushing force with the auxiliary flushing water flow in the inlet section 21.

[0042] To ensure that the main flushing water flow and the auxiliary flushing water flow are not blocked by the upper wall surface 212 of the inner wall of the inlet section 21 when converging, the cross-sectional area of the inner cavity of the inlet section 21 gradually increases from bottom to top, providing sufficient space for the convergence of the water flow and facilitating the discharge of dirt from below.

[0043] In this embodiment, the position where the connecting section is connected to the inlet section 21 is the lowest point of the inner cavity of the sewage pipe 2. The connecting section specifically includes an intermediate section 22 and an outlet section 23. The inlet section 21, the intermediate section 22, and the outlet section 23 are connected in sequence. The position where the inlet section 21 is connected to the intermediate section 22 is the lowest point, and the outlet section 23 is horizontally arranged. The cross-sectional area of the inner cavity of the intermediate section 22 is smaller than the cross-sectional area of the inner cavity at any position of the inlet section 21 and the outlet section 23, so that the dirt can pass through quickly at a relatively high speed when passing through the rising intermediate section 22, facilitating the discharge of the dirt.

[0044] The present invention has the following beneficial effects:

[0045] 1. The water blocking wall 34 on the seat ring 3 has little resistance to the main flushing water flow, enabling the main flushing water flow flowing out of the counter flushing holes 32 to flow more smoothly to the water guiding edge 33 at the front end of the toilet bowl 1, and flushing the front wall surface 11 of the toilet bowl 1 more thoroughly;

[0046] 2. It avoids the collision and splashing of the main flushing water flow passing through the water guiding edge 33 of the counter flushing holes 32 with the water blocking wall 34;

[0047] 3. The inner wall of the inlet section 21 and the front wall surface 11 are designed into a smooth structure with a gentle transition. The entire flushing path of the main flushing water flow has no corners, and there is no situation where the flushing force is dispersed due to collision during the flushing process, resulting in a reduction in flushing performance. The main flushing water flow flowing out of the counter flushing holes 32 passes through the water guiding edge 33, the side wall surface 12, and the front wall surface 11. The water flows in all directions on the side wall surface 12 and the front wall surface 11 are smoothly concentrated at the inlet section 21, forming a larger flushing resultant force;

[0048] 4. The inner wall of the inlet section 21 and the rear wall surface 13 are designed into a raised portion a that arches towards the toilet bowl 1 or the inlet section 21. When the auxiliary flushing water flow passes through the raised portion a, it will fall in a parabolic shape and converge with the main flushing water flow on the side of the inlet section 21 close to the front wall surface 11 (i.e., the lower wall surface 211 of the inner wall of the inlet section 21). The flushing functions of the main flushing water flow and the auxiliary flushing water flow are mutually enhanced, accelerating the discharge of dirt, and there will be no situation where the auxiliary flushing water directly flushes into the rear end of the bottom of the inlet section 21, causing splashing, and there will be no situation where the auxiliary flushing water flow collides with the main flushing water flow to form a reverse flushing resistance, blocking the dirt from entering the sewage pipe 2;

[0049] 5. The cross-sectional area of the inner cavity of the inlet section 21 gradually increases from bottom to top, and the inlet section 21 extends rearward from top to bottom towards the toilet bowl 1. When the auxiliary flushing water flow and the main flushing water flow converge, they are not blocked by the upper wall surface 212 of the inner wall of the inlet section 21, and it is convenient for the dirt to be discharged quickly;

[0050] 6. A small part of the splashing water generated when the auxiliary flushing water flow converges with the main flushing water flow at the inlet section 21 is blocked by the side of the inlet section 21 close to the rear wall surface 13 (i.e., the upper wall surface 212 of the inner wall of the inlet section 21). This part of the blocked splashing water will continue to converge into the main flushing water flow and the auxiliary flushing water flow, avoiding the splashing of water outside;

[0051] 7. The use of the water consumption of the first-level water efficiency of the toilet can meet the flushing effect, and the water-saving effect is good.

[0052] The above-disclosed is only a preferred embodiment of the present invention. Of course, it cannot be used to limit the scope of the rights of the present invention. Therefore, equivalent changes made according to the claims of the present invention still fall within the scope covered by the present invention.

Claims

1. A flushing structure for a siphon jet toilet, characterized in that, It includes a urinal, a sewage pipe and a seat ring. The urinal includes a front wall surface, side wall surfaces and a rear wall surface. The seat ring is arranged on the top of the urinal. A flushing structure is provided below the seat ring. The flushing structure includes a water distribution hole and a counter flushing hole arranged above the rear wall surface, and a water guiding edge extending from the counter flushing hole towards the front end of the urinal. The water guiding edge is located at the upper edges of the side wall surfaces and the front wall surface. The sewage pipe includes an inlet section and a connecting section. The inlet section extends downward and backward towards the urinal. The bottom of the inlet section is communicated with the connecting section, and the top is communicated with the bottom of the urinal. The inner wall of the inlet section is smoothly transitioned with the front wall surface and forms a raised portion protruding towards the inner side of the urinal or the inlet section with the rear wall surface. When the water flow flowing through the rear wall surface from the water distribution hole passes through the raised portion, it falls in a parabolic shape and can directly converge with the water flow flowing through the water guiding edge and the front wall surface in sequence from the counter flushing hole on one side of the inlet section close to the front wall surface. The position where the connecting section is connected to the inlet section is the lowest point of the inner cavity of the sewage pipe. A confluence groove is provided at the position where the inlet section is connected to the front wall surface. The confluence groove is recessed 1 - 10 mm towards the front wall surface and the inner wall of the inlet section, so that the main flushing water flow that has flushed the front wall surface gathers here and then converges with the auxiliary flushing water flow flowing out from the water distribution hole in the inlet section to strengthen the flushing force.

2. The flushing structure of the flush-down toilet according to claim 1, characterized in that, The included angle of the raised portion is 100 - 160°.

3. The flushing structure of the flush-down toilet according to claim 1, characterized in that, The slope difference between the front wall surface and the inlet section at the connected position is not greater than 30°.

4. The flushing structure of the flushing-down type toilet according to claim 1, characterized in that, The cross-sectional area of the inner cavity of the inlet section gradually increases from bottom to top.

5. The flushing structure of the flush-down toilet according to claim 1, characterized in that The slope of the rear wall surface of the urinal is < 85°, and the slope of the rear wall surface is greater than the slope of the front wall surface.

6. The flushing structure of the flush-down toilet according to claim 1, characterized in that, The seat ring is provided with a water retaining wall arranged around the water guiding edge. The inner side of the water guiding edge is connected to the urinal, and the outer side is connected to the water retaining wall. The radian of the water retaining wall near the counter flushing hole end is 160 - 180°.

7. The flushing structure of the flush-down toilet according to claim 1, characterized in that, The water distribution hole is tangent to the rear wall surface.

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