Siphon type squatting pan sleeved with siphon blow-off pipe

Abstract

The utility model discloses a siphon type squatting pan sleeved with a siphon blow-off pipe, which is mainly characterized in that water flow with higher pressure at a water inlet is guided to a jet hole below the water storage surface of a blow-off inlet by an auxiliary flushing pipe, and water flow for flushing a basin bottom by a flushing hole is fused with water flow with higher kinetic energy of the jet hole and then is quickly discharged out of a basin bottom outlet; a water resistance bend is arranged on the lower portion of the siphon blow-off pipe body, and when rapid water flow of a basin bottom outlet passes through the water resistance bend, large negative pressure is rapidly formed in a negative pressure area. A large-circle eccentric sleeve small-circle eccentric connector is designed at the position connected with a reserved sewage discharge main pipe of a building, the maximum water level difference is achieved between water flow discharged from the tail end of the eccentric connector and water flow in a negative pressure area, and therefore the fastest and best negative pressure siphon effect is achieved at a sewage discharge inlet. The problems that an existing squatting pan is not enough in installation height, small in water storage surface at the bottom of the pan, large in flushing noise, large in water consumption and difficult in floating object replacement are thoroughly solved.

Description

Technical Field

[0001] This utility model relates to a sanitary ware, and more particularly to a siphon squat toilet with a siphon drain pipe. A high-pressure water flow from the inlet is guided by an auxiliary flushing pipe to a jet nozzle located below the water surface at the drain inlet. The water flow from the scrubbing nozzle, which washes the bottom of the basin, merges with the high-energy water flow from the jet nozzle and is quickly discharged from the bottom outlet. A water-blocking bend is provided at the lower part of the siphon drain pipe body, which quickly creates a large negative pressure zone when the rapid water flow passes through the bottom outlet. An eccentric interface is designed at the connection to the building's reserved main drain pipe, creating a large water level difference between the water flow discharged from the eccentric interface and the water flow in the negative pressure zone, thereby achieving a rapid and effective negative pressure siphon effect at the drain inlet. Background Technology

[0002] There are nearly 300 million urban residential units and 250 million rural residential buildings in my country. Because squat toilets offer advantages such as not taking up floor space in the bathroom, ease of use, low cost, convenient drainage and disposal of waste, and resistance to clogging, households in southern my country typically have at least one squat toilet. Therefore, the total number of squat toilets in my country is at least 300 million. Thus, researching ways to enhance the usability of squat toilets is a very important topic.

[0003] Due to the inherent structure of squat toilets, both squat toilets without and with water traps currently available on the market use a direct-fall replacement method. They share several serious problems:

[0004] 1. Stringent installation requirements. In modern buildings, the standard depth for the sunken basin in a bathroom is 380-400 mm. During building design, there is a 60-80 mm gap between the 110 mm diameter main drain pipe and the bottom slab of the sunken basin. Therefore, the total height of the squat toilet body cannot exceed 230 mm. Currently, all squat toilet interfaces are formed on the central axis of the basin bottom. Due to limitations imposed by the water seal and the diameter of the drain pipe, the basin bottom can only be made very shallow, with the depth of the middle part of the basin bottom generally only 60-80 mm. Installation will not be possible if the depth exceeds this.

[0005] 2. Small water surface area at the bottom of the basin. Squat toilets without a water trap have the water trap formed on the external U-shaped bend, leaving the bottom of the basin completely dry. Even high-quality squat toilets with a water trap only have a water surface area of ​​80x120 mm, with most of the basin bottom area remaining dry. This is because a larger water surface area would cause the water's kinetic energy to be unevenly distributed during flushing, severely affecting the flushing effect. The biggest problem with a small water surface area is that feces easily stick to the bottom of the basin, making cleaning very troublesome; furthermore, the feces exposed to the air during use produce a strong odor.

[0006] 3. The flushing noise is very loud. The principle of direct-flow flushing is to use high pressure and a large flow of water to forcibly push away and replace dirty water and debris while maintaining a constant water depth in the storage area. The impact noise of the water flow is unavoidable, generally exceeding 72 decibels. When someone uses the toilet late at night, everyone in the room will be disturbed.

[0007] 4. High water consumption. The basin and drain pipe hold nearly 2 liters of water. Relying solely on high-pressure, high-flow-rate water to slam down and completely replace the existing dirty water is essential; insufficient water is simply not feasible. Therefore, modern squat toilets typically consume 6 liters of water.

[0008] 5. Difficulty in replacing floating debris. To completely replace floating debris, two conditions must be met: first, water must flow downwards over the entire surface of the water tank; second, the original water volume must be completely replaced. The water tank surface of squat toilets with a water trap is 80 x 120 mm, and there is no water supply near the bottom. Therefore, sometimes even after flushing several times, a cigarette butt will still leave floating debris bobbing around on the surface.

[0009] How can we solve the aforementioned problems with existing squat toilets? We have explored this issue as follows. Utility Model Content

[0010] This utility model relates to a sanitary ware, and more particularly to a siphon squat toilet with a siphon drain pipe. A high-pressure water flow from the inlet is guided by an auxiliary flushing pipe to a jet nozzle located below the water surface at the drain inlet. The water flow from the scrubbing nozzle, which washes the bottom of the basin, merges with the high-energy water flow from the jet nozzle and is quickly discharged from the bottom outlet. A water-blocking bend is provided at the lower part of the siphon drain pipe body, which quickly creates a large negative pressure zone when the rapid water flow passes through the bottom outlet. An eccentric interface is designed at the connection to the building's reserved main drain pipe, creating a large water level difference between the water flow discharged from the eccentric interface and the water flow in the negative pressure zone, thereby achieving a rapid and effective negative pressure siphon effect at the drain inlet.

[0011] We know that most toilets use a siphon flushing system, which provides fast and complete flushing, and is also relatively quiet and water-saving. The siphon principle is essentially caused by the attraction and potential energy difference between liquid molecules. Current squat toilets, due to their structural limitations, cannot create a siphon effect in the drain pipe and are therefore forced to use a direct-flow flushing system.

[0012] The above-mentioned technical problem of this utility model is solved by providing a siphon squat toilet with a siphon drain pipe, which includes: a squat toilet body, a water inlet, a sewage inlet, a water supply ring, a washing hole, a panel, a basin bottom, an auxiliary flushing pipe, a jet hole, a basin bottom outlet, a sealing interface, an eccentric interface, a water resistance bend, a water seal point, a negative pressure zone, a immersion section, and a siphon drain pipe body. Its characteristic is that the auxiliary flushing pipe guides the higher-pressure water flow from the water inlet to the siphon drain pipe body. The jet holes below the water surface and the washing holes combine with the high-energy water flow from the jet holes to quickly exit the basin bottom outlet. A water baffle is set at the lower part of the siphon sewage pipe body, which quickly creates a large negative pressure zone when the fast water flow passes through the basin bottom outlet. The connection to the reserved sewage main pipe in the building is designed with an eccentric interface, which creates a large water level difference between the water flow discharged at the end of the eccentric interface and the water flow in the negative pressure zone, thereby achieving a fast and good negative pressure siphon effect at the sewage inlet.

[0013] Optional: It also includes a sealing ring disposed at the sealing interface, and the height and direction of the connection position between the basin bottom outlet and the sealing interface are not restricted.

[0014] Optional: The orifice size and spray direction of the spray hole are not limited.

[0015] Optional: The diameter of the main body of the siphon sewage pipe can be arbitrarily selected between 41 and 58 mm.

[0016] Optional: The location of the water resistance bend on the main body of the siphon sewage pipe can be arbitrarily selected according to the test results.

[0017] Optionally, the main body of the siphon sewage pipe can be a single smooth and continuous pipe, or it can be composed of multiple sealed and connected pipe sections.

[0018] Optional: The eccentric interface is set as a large circle eccentrically fitted with a small circle, which can be designed on the main body of the siphon sewage pipe or sealed and spliced ​​on site with the pipe reserved in the building. The outer diameter of the reserved pipe is usually 110 mm.

[0019] Optionally, the source of the water kinetic energy in the jet hole is unrestricted; it can be the potential energy of the water level in the water tank or the kinetic energy of the tap water pressure.

[0020] Optionally, the injection hole may be a single-hole injection or a multi-hole injection.

[0021] Optional: The structural shape of the siphon sewage pipe body and the water-blocking bend can be arbitrarily selected.

[0022] Compared with the existing direct-fall replacement squat toilets in the industry, the siphon-type squat toilet using the socketed siphon sewage pipe of this utility model has the following advantages:

[0023] 1. The siphon drain pipe is installed on the outside of the basin bottom, solving the problem of installation being impossible when the basin bottom is too deep. The standard depth of the sunken basin in a typical building bathroom is 380-400 mm, and the 110 mm diameter drain pipe leaves a 60-80 mm gap between the main drain pipe and the basin bottom, ultimately limiting the height of the squat toilet to no more than 230 mm. Furthermore, all current squat toilet interfaces are located on the central axis of the basin bottom. Due to limitations imposed by the water seal and drain pipe diameter, the basin bottom can only be made very shallow, typically only 60-80 mm deep in the middle. Anything deeper than this cannot be installed. In daily use, a shallow basin bottom not only easily splashes waste but also raises concerns about feces hitting the buttocks. This new siphon squat toilet with a siphon drain pipe installs the siphon drain pipe on the side of the basin bottom, eliminating the limitation on the drain height. As long as the total height of the siphon drain pipe is less than 340 mm, the squat toilet can be installed; the depth of the basin bottom is not directly related.

[0024] 2. The siphon drain pipe is installed on the outside of the basin bottom, solving the problem of a small water surface area at the bottom. Squat toilets without a water trap have the water trap formed on the external U-shaped bend, leaving the basin bottom completely dry and a black hole at the drain inlet. Feces stick to this hole and are difficult to scrub off, as this is a connection point, resulting in an unsightly appearance and unpleasant odor. Squat toilets with a water trap have an 80x120 mm water surface area, but this water is positioned too far back, leaving most of the basin bottom area dry. Another problem is that a larger water surface area leads to less concentrated water kinetic energy during direct flushing. When people use the toilet, feces stick to the dry basin bottom and are very difficult to clean; furthermore, feces exposed to the air during use produce a strong odor. This utility model of a siphon squat toilet with a siphon drain pipe has the siphon drain pipe installed on the side of the bottom of the basin. The depth of the basin bottom can be arbitrarily designed according to the needs of the water storage area, which solves both the problem of shallow basin bottom and the problems of water storage area and water storage depth.

[0025] 3. After incorporating a siphonic sewage discharge system, flushing noise is significantly reduced. Current squat toilets, limited by their structure, can only use a direct-fall displacement method, forcibly pushing away dirty water and waste from the water surface with high pressure and a large water flow. The impact noise of the water flow is unavoidable, generally exceeding 72 decibels. This noise is unacceptable for a daily necessity. When someone uses the toilet late at night, everyone in the room is disturbed. This new siphonic squat toilet with a siphonic sewage discharge pipe installs the siphonic sewage discharge pipe on the side of the basin bottom, changing the original direct-fall displacement method to a siphonic displacement method. The water used to wash the basin bottom becomes very gentle, and the powerful jet of water secretly assists in displacement below the water surface, producing almost no noise. Multiple tests have shown that it can reduce the noise of current squat toilets from 72 decibels to approximately 40 decibels.

[0026] 4. After incorporating a siphonic drainage system, water consumption will be significantly reduced. Current squat toilets rely solely on high-pressure, high-flow-rate water to thoroughly displace wastewater from top to bottom; insufficient water is unacceptable. Therefore, most squat toilets currently consume approximately 6 liters of water. This new siphonic squat toilet, with its siphonic drainage pipe installed on the side of the basin bottom, transforms the original direct-fall replacement method into a siphonic replacement method. While a toilet tank is only about 20 centimeters high, achieving jet siphon replacement allows for first-class water saving. The squat toilet tank, however, is over 90 centimeters high, with even greater jet pressure, making it even more water-efficient than a toilet. In fact, multiple tests have proven that the reformed squat toilet only consumes about 3 liters of water to meet national replacement standards.

[0027] 5. After connecting the siphon drainage system, the replacement of floating debris is exceptionally smooth. Currently popular squat toilets use a direct-fall replacement method. To completely replace floating debris, water must flow downwards over the entire surface area of ​​the water tank, and the original water volume must be completely replaced. However, water cannot be poured down the side of the water tank near the bottom, making it very difficult to remove floating debris. This new siphon squat toilet with a connecting siphon drainage pipe installs the siphon drainage pipe on the side of the tank bottom, changing the original direct-fall replacement method to a siphon replacement method. The powerful water flow from the jet nozzle immediately displaces the air in the negative pressure zone. Furthermore, the water-resistant bend helps the entire drainage pipe achieve the fastest and best negative pressure siphon effect, ensuring that all the original water and floating debris at the bottom of the tank are siphoned away. Attached Figure Description

[0028] The embodiments of this utility model will now be described with reference to the accompanying drawings.

[0029] Figure 1 This is a schematic diagram of the implementation structure of the siphon squat toilet with a siphon sewage pipe.

[0030] In the diagram: 1—Squat toilet body, 2—Water inlet, 3—Sewage outlet, 4—Water supply ring, 5—Washing hole, 6—Pad panel, 7—Bottom of the basin, 8—Auxiliary flushing pipe, 9—Spray hole, 10—Sealing ring, 11—Bottom of the basin outlet, 12—Sealing interface, 13—Eccentric interface, 14—Water resistance bend, 15—Water seal point, 16—Negative pressure zone, 17—Immersion section, 18—Siphon sewage pipe body. Detailed Implementation

[0031] Figure 1This illustration shows a specific embodiment of the siphon-type squat toilet with a siphon drain pipe according to the present invention. A water inlet 2 is provided on the main body 1 of the squat toilet, which is connected to a water supply ring 4 and an auxiliary flushing pipe 8. The basin bottom 7 is structurally integrated with the panel 6, the water supply ring 4, and the basin bottom outlet 11. Multiple washing holes 5 are provided on the water supply ring 4. A spray hole 9 is provided below the water surface of the drain inlet 3, which is connected to the auxiliary flushing pipe 8. A sealing ring 10 is provided at the end of the basin bottom outlet 11, which ensures a tight seal between the basin bottom outlet 11 and the sealing interface 12. The water inlet on the siphon drain pipe main body 18 is the sealing interface 12, and a section of water pipe sloping upwards after the sealing interface 12 is named the immersion section 17. The water seal point 15 is crucial for controlling the water depth at the bottom of the basin. The empty pipe area above the water seal point 15 is named the negative pressure zone 16. A water baffle 14 is installed in the lower middle part of the pipe between the water seal point 15 and the eccentric interface 13.

[0032] The following aspects should be noted or adapted when implementing the design:

[0033] 1. The height and direction of the connection between the bottom outlet 11 and the sealing interface 12 are not restricted because it is necessary to consider that the squat toilet body 1 is easy to manufacture and the siphon sewage pipe body 18 is easy to install tightly.

[0034] 2. The size of the spray hole and the spray direction are not restricted because the water consumption for washing and spraying is allocated to achieve optimal siphoning and minimum water consumption in the main body 18 of the siphon sewage pipe.

[0035] 3. The diameter of the siphon sewage pipe body 18 can be arbitrarily selected between 41 and 58 mm because the pipe diameter must meet national and industry standards, and the water flow rate at the inlet 2 must also be considered. If the pipe diameter is too large, it will not meet the requirements for forming negative pressure in the pipeline.

[0036] 4. The location of the water resistance bend on the main body of the siphon sewage pipe can be arbitrarily selected according to the test results.

[0037] 5. The main body 18 of the siphon sewage pipe can be a single, smooth, integral pipe, or it can be composed of multiple sealed sections. The more sections the pipe has, the more flexible the installation and the lower the cost, making this a viable option. However, more sections make sealing more difficult and reduce the pipe's smoothness.

[0038] 6. The eccentric interface 13 can be configured as a large circle eccentrically fitted with a small circle, maximizing the water level difference between the water flow discharged from the very end of the eccentric interface 13 and the water flow in the negative pressure zone 16, thereby achieving the fastest and best negative pressure siphon effect at the sewage inlet 3. The eccentric interface 13 can be designed on the main body of the siphon sewage pipe, or it can be sealed and spliced ​​on-site with the 110 mm outer diameter pipe reserved in the building. This is because there are many ways to achieve an eccentric joint, but it is very difficult to seal the sewage pipe with a standardized eccentric joint. Therefore, it is recommended to generate the eccentric interface 13, which matches the 110 mm diameter, together with the pipe of the water baffle 14. Of course, the use of a eccentric connection between large and small pipes is not entirely ruled out.

[0039] 7. The source of the water flow energy in the jet hole 9 is not limited, either it is the potential energy of the water level in the water tank or the kinetic energy of the tap water pressure. This is because some water supply systems use inlet 2 directly connected to the tap water pipe, and there may also be other high-pressure water sources added near the jet hole 9 to help the main body 18 of the siphon sewage pipe quickly achieve a strong siphon replacement effect.

[0040] 8. The jet hole 9 can be a single jet or a multi-jet jet. The main consideration is that during the design, the water flow energy should be distributed to the most appropriate part of the sewage inlet 2 according to the flow rate and pressure to achieve the best siphon effect. Therefore, the jet hole 9 can be one or more.

[0041] 9. The structural shape of the siphon sewage pipe body 18 and the water resistance bend 14 can be arbitrarily selected. It is considered that there are several shapes of sewage pipes that can achieve the siphon effect. However, the question is how to choose the optimal shape based on the specific structure of the ceramic. It is difficult to find an accurate standard for whether it is optimal. Therefore, the structural shape of the siphon sewage pipe body 18 and the water resistance bend 14 can be arbitrarily selected.

[0042] After flushing begins, the siphon replacement process of this utility model's siphon squat toilet with a siphon drain pipe is as follows: Generally, the inlet 2 is connected to a water tank approximately 1 meter high, with a water level difference of about 90 centimeters between the tank and the inlet 2. This height difference is three times that of a typical toilet with a ceramic tank. Therefore, when the flush button is pressed, the strong water flow from the inlet 2 simultaneously supplies water to the water supply ring 4 and the auxiliary flushing pipe 8. The water supply ring 4 can control the noise by adjusting the number of flushing holes 5 based on the pressure. The diameter of the auxiliary flushing pipe 8 fully meets the flow rate of the jet holes 9. Therefore, the powerful kinetic energy jet from the jet holes 9, after merging with the water flow from the flushing holes 5 (washing the bottom of the basin 7), forms a full-pipe flow with a high velocity, quickly displacing the air in the negative pressure zone 16 pipe through the basin bottom outlet 11 and the immersion section 17. When the nearly full water flow passes through the water baffle 14, there is a moment of deceleration or waiting. At this time, the water level difference between the water flow in the eccentric interface 13 and the water flow in the negative pressure zone 16 is the greatest. Due to the attraction and potential energy difference between the liquid molecules, the flow velocity in the water baffle 14 section increases, the negative pressure in the negative pressure zone 16 increases, the replacement speed of the drain inlet 3 increases, and the siphon force increases. When the water inlet 2 stops supplying water, and there is no water to draw in at the drain inlet 3, air is drawn in. As a result, the negative pressure in the negative pressure zone 16 disappears, and the siphon process stops.

[0043] Undoubtedly, the siphon squat toilet with socketed siphon drain pipe of this utility model can have many variations and modifications, and is not limited to the specific structure of the above-described embodiments, such as variations in the overall structure of the siphon drain pipe and various changes in the ceramic interface with the squat toilet. In short, the protection scope of this utility model with socketed siphon drain pipe should also include those exchanges, substitutions, and modifications that are obvious to those skilled in the art.

Claims

1. A siphon-type squat toilet with a siphon drain pipe, comprising: The squat toilet body, water inlet, sewage inlet, water supply ring, washing hole, panel, basin bottom, auxiliary flushing pipe, jet hole, basin bottom outlet, sealing interface, eccentric interface, water resistance bend, water seal point, negative pressure zone, immersion section, and siphon sewage pipe body are characterized in that: the auxiliary flushing pipe (8) guides the high-pressure water flow from the water inlet (2) to the jet hole (9) located below the water surface of the sewage inlet (3), and the water flow from the washing hole (5) washing the basin bottom (7) merges with the water flow with greater kinetic energy from the jet hole (9). Then, the water is quickly discharged from the bottom outlet (11); a water baffle (14) is set at the lower part of the siphon sewage pipe body (18), so that when the rapid water flow from the bottom outlet (11) passes through, the negative pressure zone (16) quickly forms a large negative pressure; an eccentric interface (13) is designed at the connection of the reserved sewage main pipe of the building, so that the water flow discharged from the end of the eccentric interface (13) and the water flow in the negative pressure zone (16) can achieve a water level difference, thereby achieving a rapid and good negative pressure siphon effect at the sewage inlet (3).

2. The siphon-type squat toilet with a connecting siphon sewage pipe according to claim 1, characterized in that: It also includes a sealing ring (10) disposed on the sealing interface (12), and the height and direction of the connection position between the bottom outlet (11) and the sealing interface (12) are not restricted.

3. The siphon-type squat toilet with a connecting siphon sewage pipe according to claim 1, characterized in that: The aperture size and spray direction of the spray hole (9) are not limited.

4. The siphon-type squat toilet with a connecting siphon sewage pipe according to claim 1, characterized in that: The diameter of the main body (18) of the siphon sewage pipe can be arbitrarily selected between 41 and 58 mm.

5. The siphon-type squat toilet with a connecting siphon sewage pipe according to claim 1, characterized in that: The position of the water-blocking bend (14) designed on the main body (18) of the siphon sewage pipe can be arbitrarily selected according to the test results.

6. The siphon-type squat toilet with a connecting siphon sewage pipe according to claim 1, characterized in that: The main body (18) of the siphon sewage pipe can be a smooth and continuous integral pipe or a multi-segment sealed pipe.

7. The siphon-type squat toilet with a connecting siphon sewage pipe according to claim 1, characterized in that: The eccentric interface (13) is set as a large circle eccentrically fitted with a small circle. It can be designed on the main body (18) of the siphon sewage pipe or it can be sealed and spliced ​​on site with the pipe reserved in the building. The outer diameter of the reserved pipe is 110 mm.

8. The siphon-type squat toilet with a connecting siphon sewage pipe according to claim 1, characterized in that: The source of the kinetic energy of the water flow in the jet hole (9) is unrestricted; it can be either the potential energy of the water level in the water tank or the kinetic energy of the tap water pressure.

9. The siphon-type squat toilet with a connecting siphon sewage pipe according to claim 1, characterized in that: The injection hole (9) can be either a single-hole injection or a multi-hole injection.

10. The siphon-type squat toilet with a connecting siphon sewage pipe according to claim 1, characterized in that: The structural shape of the main body (18) of the siphon sewage pipe and the water resistance bend (14) can be arbitrarily selected.

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