Anti-siphon device of pipeline water seal well and pipeline water seal well

Abstract

The utility model discloses an anti-siphon device of a pipeline water seal well, which comprises an anti-siphon cylinder into which a drainage pipe orifice extends and a first fixing structure for fixing the anti-siphon cylinder in the pipeline water seal well, and a plurality of water inlet holes are arranged at the bottom of the anti-siphon cylinder. The utility model further discloses a pipeline water seal well which comprises the anti-siphon device and a well body, the anti-siphon device is arranged in the well body, the bottom of the anti-siphon device does not make contact with the bottom of the well body, and a second fixing structure used for being matched with the first fixing structure is arranged in the well body. According to the anti-siphon device, the water level descending speed in the anti-siphon cylinder is higher than the water level descending speed outside the anti-siphon cylinder when the drain pipe generates a siphon effect through the anti-siphon cylinder, so that the siphon effect is interrupted in advance, and the amount of water extracted due to the siphon effect is reduced; and water outside the anti-siphon cylinder enters the anti-siphon cylinder, and the liquid level in the anti-siphon cylinder rises again so as to perform water seal on the drainage pipe.

Description

Technical Field

[0001] The utility model relates to the technical field of anti-siphoning of pipeline water seal wells, and more specifically, to an anti-siphoning device of a pipeline water seal well and a pipeline water seal well. Background Art

[0002] In sewage pipe networks containing flammable gases, flammable liquids and other flammable materials, in order to prevent combustion and explosion from spreading along the sewage pipe and causing secondary accidents, a water seal well is usually set at the outlet of the sewage pipe, and a certain amount of water is kept in the water seal well, so that the pipe mouth of the sewage pipe is located 20-30 cm below the water surface of the water seal well to prevent external air or fire from entering and play a role in fire prevention and explosion prevention. A drainage pipe will be set in the water seal well. When the liquid level in the water seal well reaches a certain height, the water in the water seal well is discharged from the drainage pipe using the principle of a communicating vessel under the action of atmospheric pressure.

[0003] However, due to the siphon effect when draining water, the drain pipe will draw the water level in the water seal well to below the drain pipe mouth. Although the mouth of the sewage pipe can be placed below the drain pipe mouth by deepening the water seal well, the siphon effect cannot be used to seal the drain pipe mouth, and there is still a safety hazard. Utility Model Content

[0004] The utility model aims to overcome the deficiency in the prior art that the water seal of the water seal well drops below the outlet of the drainage pipe after drainage from the drainage pipe due to the siphon effect, and provides an anti-siphon device for a pipeline water seal well and a pipeline water seal well.

[0005] The purpose of the utility model can be achieved by adopting the following technical solutions:

[0006] An anti-siphon device for a pipeline water seal well comprises an anti-siphon cylinder into which a water supply and drainage pipe mouth extends, and a first fixing structure for fixing the anti-siphon cylinder in the pipeline water seal well, wherein a plurality of water inlet holes are arranged at the bottom of the anti-siphon cylinder.

[0007] The utility model sets an anti-siphon cylinder at the outlet of the drain pipe. When the water level of the water seal well reaches a certain height so that the drain pipe starts to drain, the drain pipe is still draining due to the siphon effect even if the liquid level in the water seal well is lower than the highest point of the drain pipe in the water seal well. When the liquid level of the water seal well drops to the top of the siphon cylinder, the anti-siphon cylinder separates the liquid in the water seal well so that the drain pipe only sucks the water in the anti-siphon cylinder when siphoning. At this time, the liquid level drop speed in the anti-siphon cylinder will be greater than the liquid level drop speed outside the anti-siphon cylinder until the liquid level in the anti-siphon cylinder drops below the outlet of the drain pipe to interrupt the siphon effect. Finally, through the water inlet hole at the bottom of the anti-siphon cylinder, under the principle of the communicating vessel, the water in the water seal well enters the anti-siphon cylinder until the water levels inside and outside the anti-siphon cylinder are the same, so that the total amount of water in the water seal well will not drop too much, and the water level in the anti-siphon cylinder can still be higher than the outlet of the drain pipe, achieving the effect of water sealing. The total water inlet speed of all the water inlet holes at the bottom of the anti-siphon cylinder is less than the drainage speed of the drain pipe.

[0008] Furthermore, the total area of ​​the water inlet holes at the bottom of the anti-siphon cylinder is smaller than the area of ​​the outlet of the drainage pipe.

[0009] In this way, by controlling the number and size of the water inlet holes, the total water inlet rate of all the water inlet holes at the bottom of the anti-siphon cylinder is reduced. In this way, when the drain pipe siphons, the water level in the anti-siphon cylinder drops much faster than the water level in the water seal well, thereby reducing the amount of water pumped away by the siphon effect and maintaining the final water level height of the water seal well to seal the drain pipe.

[0010] Furthermore, the number of the water inlet holes is nine and they are evenly distributed at the bottom of the anti-siphon cylinder.

[0011] The nine water inlet holes are arranged in three rows and three columns and are evenly spaced. The number and arrangement of the water inlet holes can also be in other ways.

[0012] Furthermore, the water inlet holes are distributed along the edge of the bottom of the anti-siphon cylinder.

[0013] Since the drain pipe is inserted into the anti-siphon tube, when the siphon effect occurs in the drain pipe and the water level in the anti-siphon tube drops, the water between the outer wall of the drain pipe and the inner wall of the anti-siphon tube flows into the drain pipe, and the water flow direction is U-shaped, and the water flow direction below the drain pipe is upward. In order to reduce the water inlet speed of the water inlet hole during the siphon effect, the water inlet hole is located at a position close to the outer peripheral edge at the bottom of the anti-siphon tube, so that the water inlet hole is located between the outer wall of the drain pipe and the inner wall of the anti-siphon tube, to avoid the water flow rate being too fast when the water inlet hole flows into the water seal well, resulting in excessive water being extracted by the drain pipe.

[0014] Furthermore, the anti-siphon cylinder includes an upper section for inserting the drainage pipe and a lower section located below the outlet of the drainage pipe.

[0015] The upper section is used for inserting the water supply and drainage pipe, and the water inlet hole is arranged at the bottom of the lower section.

[0016] Furthermore, the length of the upper section along its own axis is 25-40 cm.

[0017] The upper section is the part where the anti-siphon cylinder and the drain pipe are connected. Since the water seal requirement is that the water level is 20-30cm higher than the drain pipe outlet, after the drain pipe is interrupted due to the drop in water level in the anti-siphon cylinder, although the water in the water seal well will re-enter the anti-siphon cylinder through the water inlet hole until the water levels inside and outside the anti-siphon cylinder are consistent, some water is still sucked out before the siphon effect of the drain pipe is interrupted. In order to ensure that the water level in the anti-siphon cylinder can finally be 20-30cm higher than the drain pipe outlet, the height of the upper section is set at 25-40cm.

[0018] Furthermore, the volume of the upper section is 1.2-2 times the volume of the portion of the drainage pipe extending into the anti-siphon cylinder.

[0019] The inner diameter of the anti-siphon cylinder cannot be too large to cause the drain pipe to suck away too much water and cause the liquid level of the water seal well to drop too much, nor can it be too small to cause the drain pipe to be difficult to insert into the anti-siphon cylinder.

[0020] A pipeline water seal well comprises the anti-siphon device as described above and a well body, wherein the anti-siphon device is arranged in the well body and the bottom of the anti-siphon device does not contact the bottom of the well body, and the well body is provided with a second fixing structure for cooperating with the first fixing structure to fix the anti-siphon cylinder in the cylinder.

[0021] The first fixing structure and the second fixing structure fix the anti-siphon cylinder in the well body, and make the bottom of the anti-siphon cylinder not contact with the inner bottom surface of the well body to avoid blocking the water inlet hole.

[0022] Furthermore, the first fixing structure includes fixing holes provided on the bracket and the anti-siphon cylinder, the second fixing structure includes a bracket provided in the well body, the bracket is provided with a through hole at the position of the fixing hole, and the anti-siphon cylinder and the bracket are fixedly connected by bolts and nuts inserted in the fixing hole and the through hole.

[0023] The bracket can be set on the side wall of the well body or on the bottom of the well body, but it cannot affect the setting of the sewage pipe. This solution is fixedly connected by bolts and nuts. When the water seal well needs to be cleaned, the anti-siphon device can be disassembled to clean the anti-siphon cylinder and the inside of the well body.

[0024] Furthermore, the first fixing structure includes an inverted L-shaped convex edge arranged on the outer peripheral side wall of the top of the anti-siphon cylinder, and the second fixing structure includes a plurality of supporting legs arranged at the bottom of the well body.

[0025] In this solution, an inverted L-shaped convex edge is arranged on the top of the anti-siphon cylinder so that the inverted L-shaped convex edge can be hung on the supporting leg, so that the bottom of the anti-siphon cylinder does not contact the bottom of the well body. In this way, when it is necessary to clean the water seal well or adapt to drainage pipes of different sizes, the anti-siphon device can be more conveniently disassembled and replaced.

[0026] Compared with the prior art, the beneficial effects of the utility model are:

[0027] (1) The utility model uses an anti-siphon cylinder to make the water level in the anti-siphon cylinder drop faster than the water level outside the anti-siphon cylinder when a siphon effect occurs in the drain pipe, thereby interrupting the siphon effect in advance and reducing the amount of water drawn due to the siphon effect. Then, water outside the anti-siphon cylinder enters the anti-siphon cylinder through the water inlet hole at the bottom of the anti-siphon cylinder, and the liquid level in the anti-siphon cylinder rises again, thereby sealing the drain pipe.

[0028] (2) The water inlet speed of the water inlet holes is controlled by controlling the size and arrangement of the water inlet holes, so that the water flow speed of the water inlet holes is less than the siphon speed of the drain pipe when siphoning occurs. At the same time, the height and inner diameter of the anti-siphon cylinder are controlled so that the final water level height in the anti-siphon cylinder meets the water seal requirements.

[0029] (3) The first fixing structure and the second fixing structure are arranged so that the anti-siphon cylinder is fixed in the well body and the bottom of the anti-siphon cylinder does not contact the inner bottom surface of the well body to avoid clogging the water inlet hole. At the same time, the anti-siphon cylinder is detachable to facilitate cleaning of the cylinder body. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the structure of the utility model;

[0031] Figure 2 It is a schematic diagram of the anti-siphon cylinder of the utility model;

[0032] Figure 3 This is a schematic diagram of the distribution of water inlet holes in Example 1 of the utility model;

[0033] Figure 4 This is a schematic diagram of the distribution of water inlet holes in Example 2 of the utility model;

[0034] Figure 5 It is a schematic diagram of the overall structure of the utility model;

[0035] Figure 6 This is a schematic diagram of the anti-siphon cylinder of Example 6 of the utility model.

[0036] The illustrations are as follows:

[0037] 1-anti-siphon cylinder, 11-water inlet, 2-first fixing structure, 21-fixing hole, 22-inverted L-shaped convex edge, 3-drain pipe, 4-sewage pipe, 5-well body, 6-second fixing structure, 61-bracket, 7-bolt. DETAILED DESCRIPTION

[0038] The utility model is further described below in conjunction with specific implementation methods. The drawings are only used for exemplary descriptions, and are only schematic diagrams, not actual pictures, and cannot be understood as limiting this patent; in order to better illustrate the embodiments of the utility model, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0039] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limitations on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0040] Example 1

[0041] like Figures 1 to 3 As shown, an anti-siphon device for a pipeline water seal well includes an anti-siphon cylinder 1 into which the outlet of a water supply pipe 3 extends, and a first fixing structure 2 for fixing the anti-siphon cylinder 1 in the pipeline water seal well, and a plurality of water inlet holes 11 are provided at the bottom of the anti-siphon cylinder 1.

[0042] The utility model sets an anti-siphon cylinder 1 at the outlet of the drain pipe 3. When the water level of the water seal well reaches a certain height so that the drain pipe 3 starts to drain, the drain pipe 3 is still draining due to the siphon effect even if the liquid level in the water seal well is lower than the highest point of the drain pipe 3 in the water seal well. When the liquid level of the water seal well drops to the top of the siphon cylinder, the anti-siphon cylinder 1 separates the liquid in the water seal well so that the drain pipe 3 only sucks the water in the anti-siphon cylinder 1 when siphoning. At this time, the liquid level drop speed in the anti-siphon cylinder 1 will be greater than the liquid level drop speed outside the anti-siphon cylinder 1, until the liquid level in the anti-siphon cylinder 1 drops below the outlet of the drain pipe 3 to interrupt the siphon effect. Finally, through the water inlet hole 11 at the bottom of the anti-siphon cylinder 1, under the principle of the communicating vessel, the water in the water seal well enters the anti-siphon cylinder 1 until the water levels inside and outside the anti-siphon cylinder 1 are the same, so that the total amount of water in the water seal well will not drop too much, and the water level height in the anti-siphon cylinder 1 can still be higher than the outlet of the drain pipe 3, so as to achieve the effect of water sealing. The total water inlet speed of all the water inlet holes 11 at the bottom of the anti-siphon cylinder 1 is lower than the water discharge speed of the drain pipe 3 .

[0043] The total area of ​​the water inlet holes 11 at the bottom of the anti-siphon cylinder 1 is smaller than the area of ​​the outlet of the drain pipe 3 .

[0044] In this way, by controlling the number and size of the water inlet holes 11, the total water inlet speed of all the water inlet holes 11 at the bottom of the anti-siphon tube 1 is reduced, so that when the drain pipe 3 siphons, the water level in the anti-siphon tube 1 drops much faster than the water level in the water seal well, thereby reducing the amount of water pumped away due to the siphon effect and maintaining the final water level height of the water seal well to seal the drain pipe 3.

[0045] The number of water inlet holes 11 is nine and they are evenly distributed at the bottom of the anti-siphon cylinder 1 .

[0046] The nine water inlet holes 11 are arranged in three rows and three columns and are evenly spaced. The number and arrangement of the water inlet holes 11 can also be in other ways.

[0047] The anti-siphon cylinder 1 comprises an upper section for inserting the drainage pipe 3 and a lower section located below the pipe opening of the drainage pipe 3 .

[0048] The upper section is used for inserting the water supply and drainage pipe 3, and the water inlet hole 11 is arranged at the bottom of the lower section.

[0049] The length of the upper section along its own axis is 35 cm.

[0050] The upper section is the part where the anti-siphon cylinder 1 and the drain pipe 3 are socketed. Since the water seal requirement is that the water level is 20-30cm higher than the outlet of the drain pipe 3, after the drain pipe 3 is interrupted in the anti-siphon cylinder 1 due to the drop in water level, although the water in the water seal well will re-enter the anti-siphon cylinder 1 through the water inlet hole 11 until the water levels inside and outside the anti-siphon cylinder 1 are consistent, some water is still sucked out before the siphon effect of the drain pipe 3 is interrupted. In order to ensure that the water level in the anti-siphon cylinder 1 can finally be 20-30cm higher than the outlet of the drain pipe 3, the height of the upper section is set at 25-40cm.

[0051] The volume of the upper section is 1.5 times the volume of the portion of the drain pipe 3 extending into the anti-siphon tube 1.

[0052] The inner diameter of the anti-siphon cylinder 1 cannot be too large to cause the drain pipe 3 to suck away too much water and cause the liquid level of the water seal well to drop too much, nor can it be too small to cause the drain pipe 3 to be difficult to insert into the anti-siphon cylinder 1.

[0053] Example 2

[0054] This embodiment is similar to embodiment 1, except that Figure 4 As shown, in this embodiment, the water inlet holes 11 are distributed along the edge of the bottom of the anti-siphon tube 1.

[0055] Since the drain pipe 3 is inserted into the anti-siphon tube 1, when the siphon effect occurs in the drain pipe 3 and the water level in the anti-siphon tube drops, the water between the outer wall of the drain pipe 3 and the inner wall of the anti-siphon tube 1 flows into the drain pipe 3, and the water flow direction is U-shaped, and the water flow direction below the drain pipe 3 is upward. In order to reduce the water inflow speed of the water inlet hole 11 during the siphon effect, the water inlet hole 11 is located at a position close to the outer peripheral edge at the bottom of the anti-siphon tube 1, so that the water inlet hole 11 is located between the outer wall of the drain pipe 3 and the inner wall of the anti-siphon tube 1, so as to avoid the water flow rate of the water in the water seal well being too much extracted by the drain pipe 3 due to excessive water being flowed into the water inlet hole 11.

[0056] The length of the upper section along its own axis is 30 cm. The volume of the upper section is 1.3 times the volume of the portion of the drain pipe 3 extending into the anti-siphon cylinder 1.

[0057] Example 3

[0058] This embodiment is similar to Embodiment 1, except that

[0059] The length of the upper section along its own axis is 25 cm. The volume of the upper section is 1.8 times the volume of the portion of the drain pipe 3 extending into the anti-siphon tube 1.

[0060] Example 4

[0061] This embodiment is similar to Embodiment 1, except that

[0062] The length of the upper section along its own axis is 40 cm. The volume of the upper section is twice the volume of the portion of the drain pipe 3 extending into the anti-siphon tube 1.

[0063] Example 5

[0064] like Figure 5 As shown, a pipeline water seal well includes an anti-siphon device as in any one of embodiments 1-4 and a well body 5, the anti-siphon device is arranged in the well body 5 and the bottom of the anti-siphon device is not in contact with the bottom of the well body 5, and a second fixed structure 6 is provided in the well body 5 for cooperating with the first fixed structure 2 to fix the anti-siphon cylinder 1 in the cylinder.

[0065] The first fixing structure 2 and the second fixing structure 6 fix the anti-siphon cylinder 1 in the well body 5 , and make the bottom of the anti-siphon cylinder 1 not contact with the inner bottom surface of the well body 5 to avoid blocking the water inlet hole 11 .

[0066] The first fixing structure 2 includes a fixing hole 21 provided on the bracket 61 and the anti-siphon cylinder 1, and the second fixing structure 6 includes a bracket 61 provided in the well body 5, and the bracket 61 is provided with a through hole at the position of the fixing hole 21, and the anti-siphon cylinder 1 and the bracket 61 are fixedly connected by bolts 7 and nuts inserted in the fixing hole 21 and the through hole.

[0067] The bracket 61 can be arranged on the side wall of the well body 5 or on the bottom of the well body 5, but it cannot affect the arrangement of the sewage pipe. This solution is fixedly connected by bolts 7 and nuts. When the water seal well needs to be cleaned, the anti-siphon device can be disassembled to clean the anti-siphon tube 1 and the inside of the well body 5.

[0068] Example 6

[0069] This embodiment is similar to embodiment 1, except that Figure 6 As shown, in this embodiment, the first fixing structure 2 includes an inverted L-shaped convex edge 22 arranged on the outer peripheral side wall of the top of the anti-siphon cylinder 1, and the second fixing structure 6 includes a plurality of supporting legs arranged at the bottom of the well body 5.

[0070] In this solution, an inverted L-shaped flange 22 is arranged on the top of the anti-siphon cylinder 1 so that the inverted L-shaped flange 22 can be hung on the supporting leg, so that the bottom of the anti-siphon cylinder 1 does not contact the bottom of the well body 5. In this way, when the water seal well needs to be cleaned or when drain pipes 3 of different sizes need to be adapted, the anti-siphon device can be more conveniently disassembled and replaced.

[0071] Obviously, the above embodiments of the utility model are only examples for clearly explaining the utility model, and are not intended to limit the implementation methods of the utility model. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made on the basis of the above description. It is not necessary and impossible to list all the implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the utility model should be included in the protection scope of the claims of the utility model.

Claims

1. An anti-siphon device for a pipeline water seal well, characterized in that: It comprises an anti-siphon cylinder (1) into which the outlet of a water supply or drainage pipe extends, and a first fixing structure (2) for fixing the anti-siphon cylinder (1) in a water seal well of a pipeline, wherein a plurality of water inlet holes (11) are provided at the bottom of the anti-siphon cylinder (1).

2. The anti-siphon device for pipeline water seal well according to claim 1, characterized in that: The total area of ​​the water inlet holes (11) at the bottom of the anti-siphon cylinder (1) is smaller than the area of ​​the outlet of the drainage pipe.

3. The anti-siphon device for pipeline water seal well according to claim 2, characterized in that: The number of the water inlet holes (11) is nine and they are evenly distributed at the bottom of the anti-siphon cylinder (1).

4. The anti-siphon device for pipeline water seal well according to claim 2, characterized in that: The water inlet holes (11) are distributed along the edge of the bottom of the anti-siphon cylinder (1).

5. The anti-siphon device for pipeline water seal well according to claim 1 or 4, characterized in that: The anti-siphon cylinder (1) comprises an upper section for the drainage pipe to be inserted into and a lower section located below the drainage pipe opening.

6. The anti-siphon device for pipeline water seal well according to claim 5, characterized in that: The length of the upper section along its own axis is 25-40 cm.

7. The anti-siphon device for pipeline water seal well according to claim 5, characterized in that: The volume of the upper section is 1.2-2 times the volume of the portion of the drainage pipe extending into the anti-siphon cylinder (1).

8. A pipeline water seal well, characterized in that: It comprises an anti-siphon device as described in any one of claims 1 to 7 and a well body (5), wherein the anti-siphon device is arranged in the well body (5) and the bottom of the anti-siphon device does not contact the bottom of the well body (5), and the well body (5) is provided with a second fixing structure (6) for cooperating with the first fixing structure (2) so that the anti-siphon cylinder (1) is fixed in the cylinder.

9. The pipeline water seal well according to claim 8, characterized in that: The first fixing structure (2) includes a fixing hole (21) provided on a bracket (61) and the anti-siphon cylinder (1); the second fixing structure (6) includes a bracket (61) provided in the well body (5); the bracket (61) is provided with a through hole at the position of the fixing hole (21); the anti-siphon cylinder (1) and the bracket (61) are fixedly connected by bolts (7) and nuts inserted into the fixing hole (21) and the through hole.

10. The pipeline water seal well according to claim 8, characterized in that: The first fixing structure (2) comprises an inverted L-shaped convex edge (22) arranged on the outer peripheral side wall of the top of the anti-siphon cylinder (1), and the second fixing structure (6) comprises a plurality of supporting legs arranged at the bottom of the well body (5).

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