Water-saving pedestal pan

Abstract

The invention relates to the technical field of pedestal pans, and discloses a water-saving pedestal pan which comprises a flushing part, an accelerating part, a sewage discharging part and a sewage discharging pipe which are sequentially communicated, at least one flushing opening is formed in the rear portion of the flushing part, the width of a water sealing surface at the top of the sewage discharging part is gradually reduced from back to front, and / or at least one boss is arranged on the inner wall of the accelerating part. The slope portion of the boss can play a role in guiding water flow passing through the slope portion, force facing the pollution discharge portion is applied to the part of water flow, and part of water flow is directly guided to the pollution discharge portion, so that water flow rushing to the pollution discharge portion from top to bottom along the inner wall of the acceleration portion is formed under the interaction of the water flow and other water flow. And the part of water flow can generate direct larger impact force on the dirt floating on the water sealing surface and the dirt in the dirt discharge part, so that the dirt can be discharged more easily.

Description

Technical Field

[0001] This invention relates to the field of toilet technology, and more particularly to a water-saving toilet. Background Technology

[0002] Currently, with the increasing scarcity of water resources and the growing awareness of water conservation among the public, water conservation has become an important consideration when choosing a toilet. However, many toilets on the market are caught in a dilemma regarding the balance between water conservation and cleaning effectiveness. Traditional toilets generally have two main problems: on the one hand, while reducing the amount of water used per flush by changing the shape and size of the drain pipe, they often fail to completely remove waste in actual use, requiring users to flush multiple times and thus wasting water resources.

[0003] Taking a common wall-mounted toilet as shown in Figures 9, 18, 20, and 22 as an example, the bottom of the inner wall of this toilet is approximately circular, and the inner wall is relatively smooth. After each flush, the swirling water flow on the inner wall of the toilet usually cannot completely flush away the waste, especially the waste floating on the surface (such as pieces of toilet paper), resulting in poor flushing performance. In addition, toilets with better cleaning effects often require a larger flush volume, which contradicts modern water conservation concepts. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a water-saving toilet to solve the problem of poor sewage discharge effect of current toilets.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows: A water-saving toilet includes a flushing section, an acceleration section, a sewage discharge section, and a sewage discharge pipe connected in sequence. The flushing section has at least one flushing port at its rear. The width of the water cover on the top of the sewage discharge section gradually decreases from back to front. And / or the inner wall of the acceleration section has at least one protrusion.

[0006] Furthermore, three horizontal cross-sections passing through the boss are made sequentially from top to bottom: cross-section BB passing through the upper edge of the boss, cross-section DD passing through the vertex BB of the boss, and cross-section FF passing through the lower edge of the boss. The distance between cross-section BB and cross-section DD is e, the distance between cross-section DD and cross-section FF is f, the total height of the acceleration section is h3, and the vertical distance between the vertex BB and the top surface of the acceleration section is h2. Then, at least one of the following conditions must be satisfied: h2:h3=1:3~2:3 and e:f=1:1.5~3:2.

[0007] Furthermore, the intersection of the cross section DD and the front edge of the boss is point AA, and the intersection of the cross section DD and the rear edge of the boss is point CC; along the longitudinal direction, the distance between point AA and vertex BB is m1, the distance between vertex BB and point CC is m2, the distance between vertex BB and the front end of the top of the inner wall of the acceleration section is n, the distance between point AA and point CC is m, and the total length of the acceleration section is x. Then, at least one of the following is satisfied: n:x = 1:4~2:3, m1:m2 = 2.5:1~1:1, and m:x = 1:5~1:3.

[0008] Furthermore, there are two protrusions, which are respectively located on the left and right sides of the acceleration section. Standing in front of the toilet and facing the back of the toilet, looking down from above, the water sprayed from the flush nozzle enters from the left side of the flush section in a counterclockwise direction. In the vertical direction, the protrusion on the right is higher than the protrusion on the left.

[0009] Furthermore, the left-hand boss's vertex BB is δ1 above its base surface, and the right-hand boss is δ2 above its base surface. This satisfies 0 < δ1 ≤ 5 mm and 0 < δ2 ≤ 5 mm, or it also satisfies at least one of δ1 > δ2 or (δ1 - δ2) ≤ 3 mm.

[0010] Furthermore, the boss is ridge-shaped, the ridge line at the top of the boss is located in a vertical plane passing through the top of the boss, the top of the boss is an arc surface, and the boss smoothly transitions from its top to its edge.

[0011] Furthermore, the water cover is a quasi-isosceles triangle with three arc-shaped corners and three arc-shaped sides facing forward; the radius of the arc at the vertex of the quasi-isosceles triangle is smaller than the radius of the arc at the other two corners, the radius of the arc on the two sides of the quasi-isosceles triangle is larger than the radius of the arc on the base, and the two adjacent arcs are tangent to each other.

[0012] Furthermore, the inner wall of the sewage discharge section smoothly transitions from the water cover to the sewage pipe, and the cross-sectional area of ​​the sewage discharge section gradually decreases from the water cover to the sewage pipe along the water flow direction.

[0013] The positive effects of this invention are: 1. This invention comprises a flushing section, an acceleration section, and a waste discharge section. The width of the water cover at the top of the waste discharge section and even the width of the inner wall of the waste discharge section gradually decreases from back to front. This reduces the flow area of ​​the waste discharge section compared to the flow area of ​​the waste discharge section of existing toilets with a circular cross-section, thereby accelerating the water flow velocity within the waste discharge section. Simultaneously, due to the increased water flow velocity, the waste discharge effect is better with the same flushing volume, preventing waste residue or blockage. The amount of flushing water required can also be reduced to achieve the same waste discharge effect.

[0014] 2. The inner wall of the acceleration section is equipped with protrusions. After the water enters the flushing section, it enters the acceleration section in a spiral shape. Some of the water flows over the protrusions, and the obstruction effect of the protrusions reduces the rotational speed of this part of the water flow, thereby weakening the swirling effect. Because the rotational speed of this part of the water flow is reduced, the centrifugal force it experiences is also reduced, allowing this part of the water flow to enter the sewage discharge section more quickly. In addition, the slope of the protrusions guides the water flow passing through this part, applying a force towards the sewage discharge section, directly directing some of the water flow towards the sewage discharge section. This water flow, interacting with the rest of the water flow, forms a water flow that rushes down the inner wall of the acceleration section towards the sewage discharge section. This part of the water flow generates a greater direct impact force on the dirt floating on the water surface and the dirt inside the sewage discharge section, making it easier to discharge these dirt items. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the external shape of the present invention; Figure 2 This is a top-down view of the external shape of the invention; Figure 3 This is a cross-sectional view of the present invention; Figure 4 This is a contour map of the inner wall of the present invention; Figure 5 This is a schematic diagram of the shape of the ridge line through the vertex BB; Figure 6 yes Figure 3 Outline diagram of the JJ section on the inner wall of the intermediate acceleration section; Figure 7 yes Figure 3 Cross-sectional view of the MM section of the inner wall of the intermediate acceleration section; Figure 8 yes Figure 3 Eight cross-sectional views of the inner wall of the central sewage discharge section and the inner wall of the sewage pipe along the vertical direction of water flow; Figure 9 This is a cross-sectional view of an existing wall-mounted toilet. Figure 10 yes Figure 8 Five cross-sectional views of the inner wall of the bottom of the toilet bowl along the vertical direction of water flow; Figure 11 This is a schematic diagram of the CAE fluid drag force simulation analysis of the present invention when the test pollutant is a small ball; Figure 12 This is a schematic diagram of CAE fluid drag force simulation analysis in an existing toilet when the experimental waste consists of small balls; Figure 13 This is a vector diagram showing the fluid drag force acting on the small balls in this invention when the test contaminant is a small ball; Figure 14This is a vector diagram showing the fluid drag force acting on the small balls in an existing toilet bowl when the experimental waste is a small ball; Figure 15 This is a schematic diagram of the water flow inside the invention after rinsing for 2.25 seconds; Figure 16 This is a diagram illustrating the water flow inside a toilet bowl after 2.25 seconds of flushing. Figure 17 This is a schematic diagram of the working process of the present invention when the test pollutant is a small ball; Figure 18 This is a schematic diagram of the working process of an existing toilet when the waste is a small ball; Figure 19 This is a schematic diagram of the working process of the present invention when the test pollutant is particulate matter; Figure 20 This is a schematic diagram illustrating the working process of an existing toilet when the waste consists of particulate matter. Figure 21 This is a schematic diagram of the working process of the present invention when the test waste is toilet paper; Figure 22 This is a schematic diagram of the working process of an existing toilet when the waste is toilet paper. In the picture: 1. Flushing section; 2. Acceleration section; 3. Sewage discharge section; 4. Sewage pipe; 5. Boss; 6. Sewage outlet; 7. Flushing outlet; 8. Tongue; 9. Water cover. Detailed Implementation

[0016] For ease of description, in the following description, the direction that is the same as the outlet of the drain pipe 4 is "back", and the opposite direction is "front". When standing in front of the toilet and facing the back of the toilet, the direction of the left hand is "left" and the direction of the right hand is "right". The direction that is consistent with the axis of the outlet end of the drain pipe 4 is "longitudinal".

[0017] Figure 8 The image shows a common toilet, 520mm long and 360mm wide. The toilet mainly comprises, from top to bottom, a flushing section 1, an acceleration section 2, a waste disposal section 3, and a waste disposal pipe 4. The flushing section 1 has two flush outlets 7 at its rear. The rear sidewall of the acceleration section 2 extends downwards to form a tongue 8, which inserts into the waste disposal section 3, thus dividing it into front and rear parts. The top of the rear part of the waste disposal section 3 connects to the waste disposal pipe 4.

[0018] The rear of the toilet is fixed to the wall or other mounting surface. The water inlet at the top of the rear connects to the water tank, and the drain pipe 4 connects to the sewer pipe. The drain section 3 is U-shaped and contains a sealing water layer to prevent backflow of odors from the sewer pipe. The top surface of the sealing water layer on the left side of the drain section 3 is the water cover 9. Five cross-sections of the drain section 3 and drain pipe 4 are made along the water flow direction: cross-section TT, cross-section UU, cross-section VV, cross-section WW, and cross-section XX. Cross-section TT passes through the water cover 9, cross-section UU passes horizontally through the bottom of the tongue 8, and the part on the left side of the drain section 3 corresponding to cross-section UU is the drain outlet 6. Cross-section VV passes vertically through the lower end of the tongue 8, cross-section XX passes vertically through the drain pipe 4, and cross-section WW passes through the right side of the drain section 3 at a 10° angle to the horizontal plane.

[0019] Figure 9 The diagram shows the shapes of cross sections TT, UU, VV, WW, and XX along the water flow direction. Figure 9 As can be seen, the flow area from section VV to section WW suddenly increases. Therefore, after the water flows from section VV to section WW, the flow velocity of the water will suddenly decrease due to the sudden increase in the flow area. As a result, the dirt is more likely to settle on the right side of the sewage discharge section 3, which means that the dirt cannot be completely discharged.

[0020] Furthermore, the water jet from the flush nozzle 7 enters the flushing section 1 in a counter-clockwise direction and then flows into the acceleration section 2, washing away the dirt on the inner wall surface of the acceleration section 2. Because the cross-section of the acceleration section 2 is larger at the top and smaller at the bottom, the rotational speed of the water flow gradually increases as it flows downwards, thus forming a vortex on the water surface 9. Since both the water surface 9 and the drain outlet 6 are circular, and the inner wall of the acceleration section 2 is smooth, the dirt flushed in by the water flow will rotate within the horizontal plane of the water surface 9. If the dirt density is less than water, it will float on the water surface 9 and rotate with the water flow. If the flushing volume is insufficient to remove this dirt, the dirt will not be discharged or will remain partially in the drain section 3. This disadvantage is particularly pronounced in wall-mounted toilets, where the drain pipe 4 outlet is relatively high (usually higher than the water surface 9), resulting in a weaker suction force for water and dirt in the drain section 3.

[0021] Example 1 like Figures 1 to 3As shown, a water-saving toilet has a top length y = 520mm, a width k = 360mm, a flushing part 1 height h1 = 77mm, and an acceleration part 2 height h3 = 132mm. The top of the acceleration part 2 has a length x = 315mm, a width z = 210mm, and a distance h4 = 179mm between the bottom of the tongue 8 and the top surface of the acceleration part 2. The shape and size of the top of the acceleration part 2 in this invention are the same as those of the existing toilets, but its structure is improved based on the existing toilets as follows: The width of the water cover 9 at the top of the sewage discharge section 3 gradually decreases from back to front. The water cover 9 is a quasi-isosceles triangle with three arcs at its three angles and three sides facing forward. The radius of the arc at the vertex of the quasi-isosceles triangle is smaller than the radius of the arc at the other two angles, the radius of the arcs on the two sides of the quasi-isosceles triangle is larger than the radius of the arc at its base, and the two adjacent arcs are tangent to each other.

[0022] Specifically, a horizontal section NN is made through the sewage outlet 6, and a horizontal section JJ is made through the water cover 9. The vertical distance between the sections NN and JJ is 47mm. Figure 5 The diagram shows the shape of the flow surface of the sewage discharge section 3 at section JJ. This flow surface has a length c = 118 mm, a width b = 98 mm, and an inscribed triangle with a height d = 77 mm. An arc with radius R1 = 17 mm is drawn through the apex of this triangle, and arcs with radius R2 = 60 mm are drawn through the other two corners of the triangle. An arc with radius R3 = 67 mm is drawn through the rear end of the flow surface (for ease of description, these three arcs are referred to as arcs R1, R2, and R3, respectively). The center of arc R2 is located on the base of the triangle, and the centers of arcs R1 and R3 are both located on the line of symmetry of the triangle. Then, common tangent arcs with radius R4 = 146 mm, tangent to arcs R1 and R2, and common tangent arcs with radius R5 = 25 mm, tangent to arcs R2 and R3, are drawn, thus forming the flow surface.

[0023] Figure 6 The diagram shows the flow surface obtained after the cross-section NN intersects the inner wall of the sewage discharge section 3. This flow surface is symmetrical from left to right, with a length s = 85 mm and a width t = 84 mm. The front end of this flow surface is similar to the one described above. Figure 5 The longitudinal distance between the bases of the middle triangle is u = 47 mm. An arc with radius R6 = 33 mm is drawn through the front end of the flow surface, and an arc with radius R9 = 77 mm is drawn through the rear end of the flow surface. The arcs with radius R6 and radius R9 are then connected sequentially by arcs with radius R7 = 67 mm and radius R8 = 19 mm, respectively. All adjacent arcs are tangent. The centers of the arcs with radius R6 and radius R9 lie on the line of symmetry of the section, and the center of the arc with radius R7 lies on the line of symmetry of the section. Figure 5 On the vertical plane containing the base of the triangle.

[0024] Similarly, between section JJ and section NN, construct sections KK, LL, and MM on the inner wall of the sewage discharge section 3. The distance between section MM and section NN, and the distance between section LL and section NN, are both d3, where d3 = 15 mm. The distance between section KK and section JJ is d2, where d2 = 20 mm.

[0025] like Figure 3 As shown, the drain pipe 4 is connected to the bottom of the drain section 3. A cross-section QQ is made vertically through the tongue 8, and cross-sections RR and SS are made perpendicular to the axis of the drain pipe 4. These cross-sections form a shape with the inner wall of the drain section 3 and the inner wall of the drain pipe 4 as shown. Figure 7 The eight flow cross-section diagrams are shown. Figure 7 In the middle section, the radius of the flow section corresponding to section SS is 27mm. Along the water flow direction, the inner wall of the drain section 3 and the inner wall of the drain pipe 4 are formed by a gradual, smooth transition from section JJ to section SS. Vertically, the inner wall of the acceleration section 2 is formed by a gradual, smooth transition from section JJ to the top of the acceleration section 2. From... Figure 7 As can be seen from the above, along the direction of water flow, the cross-sectional area of ​​the water cover 9 to the rear end of the sewage pipe 4 gradually decreases. Therefore, during the process of water flow in the sewage section 3 and the sewage pipe 4, the water flow velocity gradually increases, and there is no sudden change in the flow velocity during the process of increasing the flow velocity, which is conducive to the discharge of dirt and can avoid the deposition or blockage of dirt in the sewage section 3.

[0026] In actual production, the tongue 8 adopts a double-wall structure with a V-shaped cross-section. The right side of the tongue 8 is the pipe wall of the sewage pipe 4, and the left side is the side wall of the sewage section 3.

[0027] When water is ejected from the two flush nozzles 7 at the rear of the flushing section 1, it first rotates counterclockwise within the flushing section 1 (viewed from top to bottom), and then spirals into the acceleration section 2. Because the water surface 9 is a near-isosceles triangle, the inner wall of the acceleration section 2 gradually narrows from back to front, a phenomenon that becomes more pronounced towards the bottom, thus directing more water directly to the water surface 9. During this process, dirt on the inner wall of the acceleration section 2 is carried by the water flow into the discharge section 3, and then discharged through the drain pipe 4. Because the width of the water surface 9 and even the inner wall of the discharge section 3 gradually decreases from back to front, the flow area of ​​the discharge section 3 is smaller compared to the flow area of ​​the existing circular cross-section toilet discharge section 3, which accelerates the water flow speed. Simultaneously, due to the increased water flow speed, the flushing effect is better with the same flush volume, preventing dirt residue or blockage. The amount of water used for the same flushing effect can be reduced.

[0028] Example 2 Combination Figure 4 As shown, the difference between this embodiment and Embodiment 1 is that: A ridge-shaped protrusion 5 is provided on the inner right side of the acceleration unit 2.

[0029] In the horizontal direction, construct section DD through the vertex BB of boss 5. Then, construct sections CC and BB sequentially upwards at intervals of d1. Above section BB, construct section AA at intervals of d2. Below section DD, construct sections EE and FF sequentially at intervals of d1. Below section FF, construct sections GG and HH sequentially at intervals of d2. All of the above sections are horizontal, with d1 = 10 mm and d2 = 20 mm.

[0030] Wherein, section BB passes through the upper edge of boss 5, section FF passes through the lower edge of boss 5, and the distance h2 between section DD and the top surface of acceleration part 2 is 52mm, then the distance e between vertex BB and the upper edge of boss 5 is 20mm, and the distance f between vertex BB and the lower edge of boss 5 is 20mm.

[0031] The cross-sections obtained after intersecting the above-mentioned sections with the inner wall of the acceleration section 2 are summarized to form the following: Figure 4 The contour map shown has numbers indicating the vertical distance between the corresponding cross section (DD) and the cross section, in mm. Contour maps are often used to represent ground undulations and elevation on maps. On the same contour map, areas with dense contour lines indicate steep slopes, and contour lines that gradually bulge outwards from the mountaintop indicate ridges.

[0032] exist Figure 4 The shape of the inner wall of the accelerator section 2 is shown in the diagram using a contour chart. The inner walls on the left and right sides of the accelerator section 2 are relatively smooth with a large radius of curvature, while the radius of curvature at the front of the accelerator section 2 is smaller, and the radius of curvature decreases towards the bottom of the front section. From... Figure 4 It can be deduced that there is a ridge line on the boss 5, which runs vertically along the surface of the boss 5 through the vertex BB (the middle dotted line). The slope of the boss 5 is gentler in front of the ridge line and steeper in the rear of the ridge line. The bottom of the boss 5 (the part connected to the inner wall of the acceleration section 2, i.e., the figure enclosed by the intersection of the two dotted lines on the left and right, the intersection of the cross section FF and the inner wall of the acceleration section 2, and the intersection of the cross section BB and the inner wall of the acceleration section 2) has an edge shape that is roughly rectangular.

[0033] The edge of boss 5 intersects with section DD at two points: point AA in front of vertex BB and point CC behind vertex BB. The longitudinal distance between point AA and vertex BB is m1 = 81 mm, and the longitudinal distance between point CC and vertex BB is m2 = 36 mm. Therefore, the horizontal distance between point AA and point CC is m = 117 mm, and the longitudinal distance between vertex BB and the front end of the top of the acceleration unit 2 is n = 176 mm. The top surface of boss 5 is a sphere with a radius of 150 mm, and the surface of boss 5 smoothly transitions from the arc surface at the top to the bottom.

[0034] Combination Figure 5 As shown, the vertex BB of the boss 5 protrudes 3mm above its base surface by a dimension δ1. The base surface is an imaginary curved surface, which is the inner wall surface of the acceleration section 2 when the boss 5 is not provided. The dimension δ1 is the distance between the vertex BB and the base surface along the normal direction of the base surface. Specifically, a normal to the base surface is drawn so that it passes through the vertex BB. The distance between the intersection of this normal and the base surface and the vertex BB is then δ1.

[0035] When water is ejected from the flush nozzle 7, it enters the flushing section 1 counterclockwise (viewed from top to bottom), then spirals into the acceleration section 2, with some water flowing over the protrusion 5. The obstruction of the protrusion 5 reduces the rotational speed of this portion of the water flow. Because the rotational speed of this portion of the water flow is reduced, the centrifugal force it experiences is also reduced, allowing this portion of the water flow to enter the drain section 3 more quickly. Furthermore, the slope of the protrusion 5 guides the water flow passing through this section, applying a force towards the drain section 3, directing this portion of the water flow towards the drain section 3. This causes the water flow to interact with the remaining water flow, ultimately forming a stream of water flowing downwards along the inner wall of the acceleration section 2 towards the drain section 3. This stream of water exerts a greater direct impact force on the debris floating on the water cover 9 and inside the drain section 3, flushing the floating debris on the water cover 9 downwards into the drain section 3, thus making it easier for this debris to be discharged through the drain pipe 4.

[0036] Figure 11 and Figure 12 The figures shown are CAE fluid drag simulation analysis diagrams of the water-saving toilet of the present invention and the toilet of the prior art, respectively, when using small balls as test waste. Figure 13 and Figure 14 These are vector diagrams showing the fluid drag force on a small ball when the water-saving toilet of the present invention and a toilet of the prior art are used as test waste.

[0037] like Figure 11 and Figure 13As shown, the cross-section of the sewage discharge section 3 in this invention adopts an approximate triangle with a smaller width at the front and a larger width at the back. In conjunction with the function of the boss 5, the effect of the water flow in the acceleration section 2 and the sewage discharge section 3 is enhanced, thereby strengthening the water flow's entrainment effect on the ball and subjecting the ball to a greater downward fluid drag force, thus improving the ball's discharge capacity.

[0038] and Figure 12 and Figure 14 When the cross-section of the sewage discharge section 3 in the prior art toilet is circular, the water flow entering the water cover 9 at the top of the sewage discharge section 3 from the acceleration section 2 mainly rotates horizontally. The downward fluid drag force on the ball mainly comes from the fluid thrust generated when the water flows downward under the action of gravity, resulting in a smaller downward fluid drag force value. Therefore, the toilet has a weaker ability to discharge the ball.

[0039] Specifically, such as Figure 13 As shown, the red and yellow arrows indicate greater drag forces. This demonstrates that in this invention, the ball experiences a greater fluid drag force, thereby increasing the impact force of the water flow on the contaminants. Figure 14 As shown, in existing toilets, the green arrow indicates a smaller drag force and a smaller flushing force of water against waste.

[0040] Figure 15 and Figure 16 This diagram illustrates the water flow distribution in the water-saving toilet of this invention and in existing toilets after a 2.25-second flush. Figure 15 and Figure 16 In the diagram, the black lines represent the streamlines of the water flow; the denser the streamlines, the more concentrated the water flow in that area. Figure 15 In the present invention, at point A of the water-saving toilet, where the water enters from the right side of the water surface 9, the flow lines are more concentrated. Correspondingly, the water flow generates a concentrated downward drag force on the dirt on the water surface 9. The denser the flow lines, the greater the local flow rate at that point, and thus the greater the flushing force against the dirt. And... Figure 16 In existing toilets, the flow lines are more dispersed on the right side of the water surface 9. This dispersion of water flow leads to a dispersion of the flushing force on waste, resulting in a weaker flushing force and poor waste removal efficiency.

[0041] The water-saving toilet of this invention uses a tank with a full flush volume of 4L and a half flush volume of 2.6L, which is far less than the industry standard. Based on an average household use of 10 times per day, the annual water saving can reach 7.3 tons (full flush mode) or 8.0 tons (half flush mode), directly reducing users' water bills by more than 30%. This not only meets the water conservation needs of modern society but also saves users water costs.

[0042] Figures 17 to 22The images shown are screenshots from a video showing a field test comparing the water-saving toilet of this invention with existing toilets using four types of waste.

[0043] Experiment I: The waste consisted of 50 small plastic balls with a diameter of 50±0.1mm and a weight of 3.7±0.1g, and the flushing volume was full.

[0044] like Figure 17 As shown, in the water-saving toilet of the present invention, during flushing for 2.0 seconds and 4.0 seconds, a concentrated stream of water is clearly visible on the right side of the acceleration section 2, rushing towards the drain section 3. This exerts a strong downward impact force on the small balls inside the drain section 3, ensuring that all the small balls are expelled from the toilet after flushing. Because the water surface 9 at the top of the drain section 3 is a near-isosceles triangle with its apex pointing forward, the inner wall of the acceleration section 2 forms a groove-like shape near the water surface 9 at the front part of the acceleration section 2 as it transitions from bottom to top (i.e., the radius of curvature of the inner wall of the acceleration section 2 decreases at this part). Simultaneously, with the combined action of the boss 5, this water flow is ultimately formed, ensuring that all 50 small balls are expelled without residue.

[0045] And in Figure 18 During the flushing process, at 2 and 4 seconds, no significant concentrated water flow towards the drain section 3 was observed on the inner wall of the acceleration section 2. The reason for this is that, since the water cover 9 at the top of the drain section 3 of the existing toilet is circular, the front part of the inner wall of the acceleration section 2 is relatively flat. As a result, most of the water flowing onto the water cover 9 rotates within the horizontal plane where the water cover 9 is located, and the downward force is small, ultimately leaving four small balls undischarged.

[0046] Test II: The waste weighed 65g ± 1g, consisting of approximately 2500 cylindrical polyethylene granules and 100 nylon balls with a diameter of 6.35 ± 0.25mm, with a full flush volume.

[0047] like Figure 19 As shown, when the water-saving toilet of the present invention is flushed for 4.0 seconds and 6.0 seconds, a concentrated stream of water is clearly visible on the right side of the flushing part 2, rushing towards the sewage discharge part 3, thereby exerting a strong downward impact force on the particles, and ultimately leaving two particles that are not discharged.

[0048] like Figure 20 As shown, in the prior art toilet, no obvious concentrated water flow towards the sewage discharge section 3 was found on the inner wall of the acceleration section 2 when flushing for 4 seconds and 6 seconds, and 32 particles were left behind.

[0049] Experiment III: The waste consisted of six sheets of toilet paper, and the flush volume was half a flush.

[0050] like Figure 21 As shown, under the action of the concentrated water flow on the right side of the flushing section 2, all six sheets of toilet paper are eventually flushed away in the water-saving toilet of the present invention.

[0051] like Figure 22 As shown, after the test, a piece of toilet paper remained in the existing toilet.

[0052] In three repeated tests, the flushing rate of the 50 plastic balls in the water-saving toilet of this invention was 100% in all three tests, while the existing toilets left three to five balls remaining in each flush, with a flushing rate of 90%-94%. This demonstrates that the water-saving toilet of this invention significantly improves the ability to flush large volumes of simulated waste, indicating that its waste disposal structure is reasonable and the water flow can more effectively carry away waste, greatly reducing waste residue in the toilet and the risk of pipe blockage caused by waste residue.

[0053] In the three repeated tests (II), the energy-saving toilet of the present invention had 2, 3, and 1 residual particles in the three tests, respectively, while the existing toilet had 32, 47, and 41 residual particles in the three tests, indicating inconsistent cleaning performance. This demonstrates that the water-saving toilet of the present invention has a stronger and more stable cleaning effect when dealing with small particulate matter, effectively reducing the residue of small impurities inside the toilet, keeping the inside of the toilet clean, and reducing the possibility of odor and hygiene problems caused by the accumulation of small dirt.

[0054] Test III was repeated three times, with each test using half a flush volume. The water-saving toilet of this invention was able to flush away all six sheets of toilet paper each time, while existing toilets typically left one or two sheets unwashed. This demonstrates that the water-saving toilet of this invention can thoroughly flush away waste similar to toilet paper even with a smaller flush volume, showcasing its excellent adaptability to different types of waste and its highly efficient cleaning ability.

[0055] The test results are summarized in Table 1.

[0056] Table 1 Furthermore, in the particulate matter flushing test (Test II above), when the flush volume of the water-saving toilet of this invention was increased to 5.6L, all particles were flushed each time. In contrast, existing toilets require a flush volume of 6.6L to flush all particles each time, which reflects the superior water-saving capability of the water-saving toilet of this invention.

[0057] In addition, a protrusion 5 can also be provided on the inner wall of the left side of the acceleration section 2. The top of the protrusion 5 is 2.5mm higher than the base surface by a dimension δ2. The vertical height of the top of the protrusion 5 is 10mm lower than the top of the protrusion 5 on the right side wall of the acceleration section 2.

[0058] After the water flows through the right-hand boss 5, it spirals along the inner wall of the acceleration section 2 toward the left-hand boss 5. As a result, under the action of the two bosses 5, more water flows can change direction and directly rush toward the sewage discharge section 3, thereby improving the sewage discharge effect.

[0059] The above-described embodiments are detailed and specific, illustrating preferred embodiments of the present invention. They are only used to illustrate the technical ideas and features of the present invention, with the aim of enabling those skilled in the art to understand the content of the present invention and implement it accordingly. However, they are not limited to the present invention, and the patent scope of the present invention cannot be limited by this embodiment alone. That is, any equivalent changes or modifications made to the spirit disclosed in the present invention, without departing from the structure of the present invention, such as local improvements within the system and modifications or transformations between subsystems, are still within the patent scope of the present invention.

Claims

1. A water-saving toilet, comprising a flushing section (1), an acceleration section (2), a sewage discharge section (3), and a sewage discharge pipe (4) connected in sequence, wherein the rear part of the flushing section (1) is provided with at least one flushing port (7), characterized in that, The water cover (9) at the top of the sewage discharge section (3) gradually decreases in width from back to front, and / or the inner wall of the acceleration section (2) is provided with at least one boss (5).

2. The water-saving toilet according to claim 1, characterized in that, Three horizontal cross sections passing through the boss (5) are made sequentially from top to bottom: the cross section BB passing through the upper edge of the boss (5), the cross section DD passing through the vertex BB of the boss (5), and the cross section FF passing through the lower edge of the boss (5). The distance between the cross section BB and the cross section DD is e, the distance between the cross section DD and the cross section FF is f, the total height of the acceleration part (2) is h3, and the vertical distance between the vertex BB and the top surface of the acceleration part (2) is h2. Then, at least one of the following conditions must be met: h2:h3=1:3~2:3 and e:f=1:1.5~3:

2.

3. A water-saving toilet according to claim 2, characterized in that, The intersection of the cross section DD and the front edge of the boss (5) is point AA, and the intersection of the cross section DD and the rear edge of the boss (5) is point CC. Along the longitudinal direction, the distance between point AA and vertex BB is m1, the distance between vertex BB and point CC is m2, the distance between vertex BB and the front end of the top of the inner wall of the acceleration part (2) is n, the distance between point AA and point CC is m, and the total length of the acceleration part (2) is x. Then, at least one of the following is satisfied: n:x=1:4~2:3, m1:m2=2.5:1~1:1, and m:x=1:5~1:

3.

4. A water-saving toilet according to any one of claims 1 to 3, characterized in that, There are two protrusions (5), and the two protrusions (5) are respectively located on the left and right sides of the acceleration part (2); standing in front of the toilet and facing the back of the toilet, looking down from above, the water sprayed from the flushing port (7) enters from the left side of the flushing part (1) in a counterclockwise direction. In the vertical direction, the protrusion (5) on the right is higher than the protrusion (5) on the left.

5. A water-saving toilet according to claim 4, characterized in that, The left-hand boss (5) has a vertex BB that is δ1 above its base surface, and the right-hand boss (5) has a vertex δ2 above its base surface. Then, 0 < δ1 ≤ 5 mm and 0 < δ2 ≤ 5 mm are satisfied, or at least one of δ1 > δ2 and (δ1 - δ2) ≤ 3 mm is also satisfied.

6. A water-saving toilet according to claim 1, characterized in that, The boss (5) is ridge-shaped, and the ridge line at the top of the boss (5) is located in the vertical plane passing through the top of the boss (5). The top of the boss (5) is an arc surface, and the boss (5) smoothly transitions from its top to its edge.

7. A water-saving toilet according to claim 1, characterized in that, The water cover (9) is a quasi-isosceles triangle with three angles and three sides that are all arcs facing forward; the radius of the arc at the vertex of the quasi-isosceles triangle is smaller than the radius of the arc at the other two angles, the radius of the arc on the two sides of the quasi-isosceles triangle is larger than the radius of the arc on the base, and the two adjacent arcs are tangent to each other.

8. A water-saving toilet according to claim 1, characterized in that, The inner wall of the sewage discharge section (3) is smoothly transitioned from the water cover (9) to the sewage pipe (4), and the cross-sectional area of ​​the sewage discharge section (3) gradually decreases along the water flow direction from the water cover (9) to the sewage pipe (4).

Images