Slow-flow-preventing pedestal pan

Abstract

The invention belongs to the technical field of toilets, and particularly relates to an anti-slow-flow toilet which comprises a urinal, the bottom of the urinal is connected with a blow-off elbow, a side water channel is arranged on one side of the urinal, a jet hole is formed in the tail end of the side water channel, a backflow hole is formed in the bottom wall of the side water channel, and the backflow hole is communicated with an inner cavity of the urinal or the blow-off elbow. The backflow hole is formed in the bottom of the side water channel, so that a small flow of slow flow water remaining in the side water channel after flushing is finished is directly discharged into the bottom of the urinal or a pollution discharge elbow through the backflow hole, the slow flow water is prevented from continuously flowing out of the spraying hole, and therefore water marks and stains are effectively prevented from being formed on the inner wall of the urinal; the cleaning performance and the service life of the pedestal pan are obviously improved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of toilet bowls, and particularly relates to a slow-flow-preventing toilet bowl. BACKGROUND

[0002] In the prior art, in order to improve the structural simplicity of a toilet bowl and facilitate cleaning, many toilet bowls are designed with a rotary flushing structure, in which water flows through a side water channel extending along a seat ring to the front of the toilet bowl, is sprayed from a water spraying hole at the end of the side water channel, and forms a rotary water flow under potential energy to flush the surface of the pot. After the flushing water flows through the water channel in the toilet bowl, a small water flow continuously flows out of the flushing hole, which slowly flows and takes a long time (5-10 minutes) to completely disappear.

[0003] The reasons for the slow flow are as follows: 1. The toilet bowl produced by the slip casting method forms a blank body by means of model water absorption, the mold absorbs slip on one side, there is an acute angle between the inner cavity of the side water channel of the toilet bowl, the angle position is low and the resistance to water is large when the side water channel passes water, and therefore a flow lag phenomenon occurs, and slow flow is formed after the flushing water is sprayed and slowly flows out of the spraying hole; 2. The side water channel is a horizontal flow guide structure, the inner wall is uneven, and there is a local water accumulation area, the water in this part cannot have enough kinetic energy after the flushing water is discharged, and can only slowly flow to the water spraying hole; the side water channel is curved and extended, and there are structures such as bends and blocking walls inside, which block or disturb the water flow, and a local vortex backflow is formed, and the water flow is also lagged compared with the flushing water flow; 3. The inner wall of the water channel has no glaze, the surface of the ceramic body material is rough and has a water absorption effect, and the water flow is easy to adhere to form a water film, which slowly flows to the water spraying hole under the action of gravity; 4. The water inlet valve is slow to close or not tightly sealed, and water leakage occurs, forming slow flow to the water spraying hole.

[0004] This slow flow (water flow lag) is very common in rotary flushing toilet bowls, and it is difficult to clean the water stains and dirt adhered to the water scale on the surface of the pot wall after long-term use of the toilet bowl. SUMMARY

[0005] The technical problem to be solved by the present application is the slow water flow after flushing of a rotary flushing toilet bowl, which is easy to form obvious water stains.

[0006] The technical solution adopted by the present application to solve the problem is as follows: A slow-flow-preventing toilet bowl, comprising a toilet bowl, a sewage bend pipe connected to the bottom of the toilet bowl, a side water channel provided on one side of the toilet bowl, a spraying hole provided at the end of the side water channel, and a backflow hole provided on the bottom wall of the side water channel, the backflow hole being communicated with the inner cavity of the toilet bowl or the sewage bend pipe.

[0007] Compared with the prior art, the application has the beneficial effects that: The application makes the slow flow of the side water channel directly flow to the bottom of the toilet through the backflow hole, avoids the slow flow from the jet hole, reduces the retention of the water flow in the side water channel, and effectively prevents the formation of water scale on the inner wall of the pot body, thereby avoiding stubborn stains after long-term use and significantly improving the cleaning performance and service life of the toilet.

[0008] As preferred, the further technical scheme of the above structure is that: The backflow hole is arranged at the low point of the side water channel, the lower opening diameter of the backflow hole is 5-10 mm, and the upper opening diameter is 15-25 mm.

[0009] The beneficial effects obtained from the above features are that the large upper opening of the backflow hole of this example makes the overflow water of the side water channel easily flow to the backflow hole, so that all the residual water flow in the side water channel can flow into the backflow hole.

[0010] A drainage pipe is further arranged, the upper end of the drainage pipe is connected with the backflow hole, the lower end of the drainage pipe is connected with the sewage elbow below the water seal surface, and the pipe body of the drainage pipe is arranged on the outer surface of the toilet bowl.

[0011] The beneficial effects obtained from the above features are that the drainage pipe adopts the structure of the open pipe for drainage, is easy to produce and manufacture, and maintains the thickness and strength of the ceramic wall of the toilet bowl.

[0012] The lower side of the side water channel in the toilet bowl is provided with an annular flow guide groove, the annular flow guide groove is formed by the curved wall of the toilet bowl, the side water channel takes the annular flow guide groove as its bottom wall, the drainage pipe is integrally and fixedly connected with the ceramic structure of the toilet bowl, and the upper end of the drainage pipe is fixedly connected with the bottom wall of the side water channel.

[0013] The beneficial effects obtained from the above features are that the upper opening of the drainage pipe is directly connected with the backflow hole in this scheme, the drainage cavity is reduced in bending, and the water can smoothly flow to the bottom of the toilet bowl.

[0014] The lower end of the drainage pipe is connected with the inner side of the rising section of the sewage elbow.

[0015] The beneficial effects obtained from the above features are that the slow flow water point on the sewage pipe in this example is arranged on the back side of the sewage flow, so that the slow flow is prevented from backflowing under the strong water flow, and the slow flow does not affect the sewage flow.

[0016] The bottom wall of the side water channel is provided with a slow flow slope that is inclined from the jet hole to the position of the backflow hole, and the height difference of the slow flow slope is 1-2 mm.

[0017] The beneficial effects obtained from the above features are that the slow flow slope of this example makes the slow flow flow back from the jet hole, so that the water outflow and water cutoff of the jet hole are clean.

[0018] The annular flow guide groove is symmetrically arranged at two sides of the toilet bowl, and the side water channel has a length close to that of the annular flow guide groove at one side, the front end of the toilet bowl is free of the annular flow guide groove, and the rear end of the annular flow guide groove at the other side of the toilet bowl extends to the rear end of the side water channel.

[0019] The beneficial effects obtained by the above features: the example separates the jet hole from the discharge path of the dirt by the structure of the toilet bowl and the guidance of the water flow, and avoids the dirt sticking to the jet hole. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is an embodiment diagram of the side water channel of the present application; Figure 2 is an internal structure diagram of the side water channel of the present application; Figure 3 is a side structure diagram of the toilet bowl drainage pipe of the present application; Figure 4 is Figure 3 is a cross-sectional view of line A-A in FIG. 4; Figure 5 is Figure 3 is a cross-sectional view of line B-B in FIG. 5; Figure 6 is Figure 3 is a cross-sectional view of line C-C in FIG. 6; Figure 7 is an embodiment diagram of the annular flow guide groove of the present application; Figure 8 is a structure diagram of the slow flow slope of the present application.

[0021] In the figure: 1, toilet bowl; 2, sewage elbow; 3, annular flow guide groove; 4, side water channel; 41, bottom wall; 5, jet hole; 6, backflow hole; 7, drainage pipe; 8, slow flow slope. DETAILED DESCRIPTION

[0022] The present application will be further described below in conjunction with the embodiments, and the purpose is only to better understand the content of the present application, therefore, the examples do not limit the protection scope of the present application.

[0023] Referring to Figures 1 to 8 , the present application provides a slow flow prevention toilet bowl, mainly for a rotary flushing toilet, the toilet bowl usually comprises a toilet bowl 1, the bottom of the toilet bowl 1 is connected with a sewage elbow 2, the upper part of one side of the toilet bowl 1 of the rotary flushing toilet is provided with a side water channel 4, the end of the side water channel 4 is provided with a jet hole 5, the bottom of the side water channel 4 is provided with a backflow hole 6, and the backflow hole 6 is communicated with the inner cavity of the toilet bowl 1 or the sewage elbow 2.

[0024] Optionally, the backflow hole 6 is arranged at a low point position of the side water channel 4, the lower opening diameter of the backflow hole 6 is 5mm-10mm, and the upper opening diameter is 15mm-25mm. The low point position can be the position of the included angle between the side wall and the bottom wall of the side water channel (such as Figure 6 ).

[0025] The backflow hole 6 has a small diameter, and during normal flushing, only a small amount of water is shunted through the backflow hole 6, which has no significant effect on the kinetic energy of the main flushing water flow and the flushing effect. When the flushing is completed and the main flushing water flow in the side water channel 4 is emptied, the residual slow flow is discharged through the backflow hole 6, thereby avoiding the continuous slow flow from the jet hole 5, which has no flushing function. The flared structure of the backflow hole 6 is conducive to guiding the residual water in the side water channel 4 to the backflow hole 6, improving the slow flow discharge efficiency and reducing the water retention at the bottom of the side water channel 4. The water from the backflow hole 6 is preferably directly guided into the trap of the toilet bowl, thereby avoiding the formation of a visible hole structure on the inner surface of the toilet bowl 1, which is easy to be adhered or blocked by dirt.

[0026] The backflow hole 6 can be connected to the trap through a reserved water channel hidden in the wall of the toilet bowl 1, but this is difficult to produce and may reduce the strength of the wall. However, the preferred solution of the present application is to provide a drainage pipe 7 outside the toilet bowl 1, the upper end of which is connected to the backflow hole 6, and the lower end of which is connected to the sewage bend 2 below the water seal surface, and the pipe body of the drainage pipe 7 is attached to the outer surface of the toilet bowl 1.

[0027] The drainage pipe 7 is designed as an exposed pipe structure, which is easy to produce and ensures the thickness and strength of the ceramic wall of the toilet bowl 1.

[0028] As an option, the lower side of the side water channel 4 in the toilet bowl 1 is provided with an annular flow guide groove 3, which is formed by bending the wall of the toilet bowl 1, and the side water channel 4 has the annular flow guide groove 3 as its bottom wall 41. The drainage pipe 7 is a ceramic structure integrally connected to the toilet bowl 1, and the upper end of the drainage pipe 7 is fixedly connected to the bottom wall 41 of the side water channel 4. The slow flow water directly flows into the drainage pipe 7 and smoothly flows to the bottom of the toilet bowl. On the outside of the toilet bowl, the lower surface of the annular flow guide groove 3 and the connection between the drainage pipe 7 should be smoothly transitioned.

[0029] Specifically, the lower end of the drainage pipe 7 is connected to the inner side of the rising section of the sewage bend 2. During sewage discharge, the water flow rushes into the bottom of the toilet bowl 1, turns upward through the trap, and the water flow speed on the outer wall of the sewage bend 2 is fast and has large potential energy, while the water pressure on the inner side is small. In this example, the slow flow connection point is set on the back side of the main water flow of the sewage bend 2, avoiding the backflow of slow flow under strong water pressure, and the slow flow does not affect the sewage water flow.

[0030] This solution is particularly suitable for the case where the extension length of the side water channel 4 accounts for one-fourth, one-third or even more of the circumference of the toilet bowl 1. As an option, the distance between the backflow hole 6 and the jet hole 5 is 10-15 cm. This position is calculated to effectively intercept the slow flow from the rear end of the toilet bowl 1 to the jet hole 5, and will not have a significant effect on the path and kinetic energy of the main flushing water flow.

[0031] Optionally, the backflow hole 6 is preferably located on the transverse center line of the toilet bowl 1 or slightly offset to the rear side of the center line (i.e. close to the side of the water tank), which positions the drain pipe 7 to the rear side of the toilet bowl bulge (the widest position of the toilet bowl), and when the drain pipe 7 is in the visual blind area in the case of the open pipe drainage structure, the influence on the overall appearance of the toilet bowl is reduced, and the surface of the toilet bowl is smooth and can be cleaned by flushing, so the structure of the drain pipe 7 does not affect the cleaning of the toilet bowl. Further, in the new toilet bowl, an outer shell is usually provided outside the toilet bowl, and the toilet bowl 1 and the drain pipe 7 in the present scheme belong to the inner container structure of the toilet bowl, so the drain pipe 7 does not affect the appearance of the toilet bowl and does not affect the cleaning of the toilet bowl.

[0032] As a preferred option, the bottom wall 41 of the side water channel 4 is provided with a slow-flow slope 8 inclined from the jet hole 5 to the position of the backflow hole 6, and the height difference of the slow-flow slope 8 is 1mm-2mm. When the main flushing water flow in the side water channel 4, the micro slow-flow slope 8 does not affect its flow, and when the side water channel 4 turns into a slow flow, the slow-flow slope 8 makes the water film on the inner wall of the side water channel 4 not only no longer flows to the jet hole 5, but also flows back from the jet hole 5, so that the water outlet of the jet hole 5 can be quickly cut off.

[0033] As an application example of the present application, the annular flow guide groove 3 is symmetrically arranged in two sections on the left and right sides of the toilet bowl 1, the length of the side water channel 4 is close to the length of the annular flow guide groove 3 on one side, the front end of the toilet bowl 1 is without the annular flow guide groove 3, and the rear end of the annular flow guide groove 3 on the other side (the right side of the toilet bowl) extends to the rear end of the side water channel 4. This layout makes the water sprayed from the jet hole 5, a part of the water flow quickly flushes downward and has no chance to meet the jet hole again under the action of the shape of the toilet bowl 1, and the other part of the water flow is guided to the rear end of the toilet bowl through the annular flow guide groove 3 on the opposite side, thereby far away from the jet hole and also has no chance to meet the jet hole again. This design realizes the use of water flow guidance to separate the jet hole 5 from the sewage path, so that the jet hole 5 is not contaminated, and the toilet bowl is easy to clean.

[0034] The present application solves the problem of continuous flow of slow flow from the jet hole by arranging the backflow hole at the low point of the side water channel, so that the small slow flow water remaining in the side water channel after flushing is directly discharged through the hole, thereby effectively preventing the formation of water marks and stains on the inner wall of the toilet bowl (especially in the area corresponding to the jet hole), and significantly improving the cleaning performance and service life of the toilet bowl.

[0035] The above description is only a preferred and feasible embodiment of the present application, and does not limit the scope of the present application, and any equivalent changes made by applying the content of the present application and its drawings are included in the scope of the present application.

Claims

1. A slow flow preventing toilet bowl, comprising a toilet bowl (1), a drain bend (2) connected to the bottom of the toilet bowl (1), a side water channel (4) arranged on one side of the toilet bowl (1), and a jet hole (5) arranged at the end of the side water channel (4), characterized in that, The bottom of the side water channel (4) is provided with a backflow hole (6) which communicates with the inner cavity of the bowl (1) or the sewage bend (2).

2. The slow flow preventing toilet according to claim 1, wherein The backflow hole (6) is arranged at the low point of the side water channel (4), the lower opening diameter of the backflow hole (6) is 5mm-10mm, and the upper opening diameter is 15mm-25mm.

3. The backflow preventing toilet according to claim 1, characterized by A drainage pipe (7) is further arranged, the upper end of the drainage pipe (7) is connected with the backflow hole (6), the lower end of the drainage pipe (7) is connected with the sewage bend (2) below the water seal surface, and the pipe body of the drainage pipe (7) is arranged on the outer surface of the bowl (1).

4. The slow flow preventing toilet according to claim 3, characterized by The lower side of the side water channel (4) in the bowl (1) is provided with an annular flow guide groove (3), the annular flow guide groove (3) is formed by the curved wall of the bowl (1), the side water channel (4) takes the annular flow guide groove (3) as its bottom wall (41), the drainage pipe (7) is integrally connected with the bowl (1) in a ceramic structure, and the upper end of the drainage pipe (7) is fixedly connected with the bottom wall (41) of the side water channel (4).

5. The backflow preventing toilet according to claim 4, characterized by The lower end of the drainage pipe (7) is connected with the inner side of the rising section of the sewage bend (2).

6. The backflow preventing toilet according to claim 1, characterized by The backflow hole (6) is located at a position 10cm-15cm away from the jet hole (5).

7. The backflow preventing toilet according to claim 1, characterized by The backflow hole (6) is located on the transverse center line of the bowl (1) or the rear side of the transverse center line.

8. The backflow preventing toilet according to claim 1, characterized by The bottom wall (41) of the side water channel is provided with a slow flow slope (8) which is inclined from the jet hole (5) to the backflow hole (6), and the height difference of the slow flow slope (8) is 1mm-2mm.

9. The slow flow preventing toilet according to claim 4, wherein the annular flow guide groove (3) is symmetrically arranged on the left and right sides of the bowl (1) in two sections, the length of the side water channel (4) is close to the length of the annular flow guide groove (3) on one side, the front end of the bowl (1) is free of the annular flow guide groove (3), and the annular flow guide groove (3) on the other side of the bowl (1) extends to the rear end of the side water channel (4).

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