Foundation pit excavation spraying system
Through the multi-stage uniform distribution pipeline design, the water pressure and flow rate in each shunt pipe are ensured to be consistent, and the problem of uneven atomization in the existing technology is solved, and the uniform settlement and dust reduction effect of dust during foundation pit excavation is achieved.
Patent Information
- Application Number
- CN202422124584.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-30
- Publication Date
- 2025-08-26
- Estimated Expiration
- 2034-08-30
AI Technical Summary
In the existing foundation pit excavation and spraying system, the arrangement of the pipeline network causes the pressure of the outlet holes far away from the water inlet pipe to be less than the pressure of the outlet holes near the water inlet pipe, and the atomization height and range of the outlet holes are inconsistent, resulting in uneven dust settlement.
The multi-stage uniform pipeline layout method is adopted. Through the combination of water supply main pipe, multi-pass joints and diverter pipes, the water pressure and water flow rate in each diverter pipe are the same, and the atomization height and range of each atomization nozzle are consistent. The uniformity of the atomization area is ensured by using diverter pipes of different lengths.
The uniformity of atomized settlement dust is achieved, and it is suitable for effective dust reduction in small-area foundation pits, reducing water resource waste and improving dust reduction effect.
Smart Images
Figure CN223264050U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of construction dust prevention, in particular to a foundation pit excavation spraying system. Background Art
[0002] During subway construction, a foundation pit must be excavated vertically downward from the road. This excavation process generates significant dust pollution, which harms public health. This is especially true in densely populated areas, where dust pollution severely impacts people's quality of life.
[0003] At present, the dust is reduced in the foundation pit by using the sprinkler system, but the existing sprinkler system pipe network is arranged in a step-by-step pressure and flow distribution mode, such as Figure 2 As shown, the pressure at the water outlet on the water pipe far from the water inlet end is much lower than the pressure at the water outlet on the water pipe close to the water inlet end. The atomization height and range of the atomizer outside the water outlet are inconsistent, resulting in uneven dust deposition and some dust flying unchecked. Utility Model Content
[0004] The technical problem to be solved by the utility model is to study a foundation pit excavation spraying system. The pipe network of the spraying system adopts a multi-level uniform distribution method, the pressure of the water outlet is equal, and the dust settling effect is improved.
[0005] The technical solution of the utility model to solve the above technical problems is as follows:
[0006] A foundation pit excavation sprinkler system includes a water supply main, a first multi-way joint, a first diversion pipe, a second multi-way joint, a second diversion pipe and an atomizing nozzle. The tail end of the water supply main is connected to an external water source, and the head end of the water supply main is connected to the first multi-way joint. A plurality of first diversion pipes are connected in parallel to the side of the first multi-way joint facing away from the water supply main. The tail end of each first diversion pipe is connected to the second multi-way joint. The side of the second multi-way joint facing away from the first diversion pipe is connected in parallel to a plurality of second diversion pipes. The lengths of the second diversion pipes connected to the same second multi-way joint increase step by step, and an atomizing nozzle is arranged upward at the tail end of each second diversion pipe.
[0007] The beneficial effects of the present invention are as follows: the water flow is first evenly pressure-divided and diverted to multiple first diversion pipes through the first multi-way joint, and then evenly pressure-divided and diverted to multiple second diversion pipes through the second multi-way joint on the first diversion pipe. The water pressure and water flow in each diversion pipe are the same, and the atomization height and range of each atomizing nozzle are consistent. By setting multiple second diversion pipes of different lengths, the atomization area is guaranteed while ensuring the uniformity of atomized sedimentation dust. It is suitable for dust reduction in small-area foundation pits such as subway foundation pits.
[0008] On the basis of the above technical solution, the present invention can also be improved as follows.
[0009] Furthermore, each first branch pipe is provided with a switch valve.
[0010] Furthermore, each first shunt pipe is provided with a pressure regulating valve.
[0011] Furthermore, the connectors of the first multi-way connector and the second multi-way connector are quick-release connectors.
[0012] Furthermore, the first diversion pipe and the second diversion pipe are both hoses, and the pipe walls are braided with PVC polyester threads. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 This is a schematic diagram of the pipe network connection of a foundation pit excavation sprinkler system of the utility model;
[0014] Figure 2 This is a schematic diagram of the existing pipeline network connection.
[0015] In the accompanying drawings, the components represented by the reference numerals are as follows:
[0016] 1. Water supply main; 2. First multi-way connector; 3. First diversion pipe; 4. Second multi-way connector; 5. Second diversion pipe; 6. Atomizing nozzle. DETAILED DESCRIPTION
[0017] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.
[0018] like Figure 1 As shown, embodiment 1 of the utility model is a foundation pit excavation sprinkler system, comprising a water supply main 1, a first multi-way joint 2, a first diversion pipe 3, a second multi-way joint 4, a second diversion pipe 5 and an atomizing nozzle 6. The tail end of the water supply main 1 is connected to an external water source, and the head end of the water supply main 1 is connected to the first multi-way joint 2. The first multi-way joint 2 is connected to a plurality of first diversion pipes 3 in parallel on the side away from the water supply main 1, and the tail end of each first diversion pipe 3 is connected to a second multi-way joint 4. The second multi-way joint 4 is connected to a plurality of second diversion pipes 5 in parallel on the side away from the first diversion pipe 3. The lengths of the second diversion pipes 5 connected to the same second multi-way joint 4 increase step by step, and an atomizing nozzle 6 is arranged upward at the tail end of each second diversion pipe 5.
[0019] The water first flows through a first multi-way connector 2, evenly distributing the pressure to multiple first diversion tubes 3. Then, through a second multi-way connector 4 on the first diversion tubes 3, it evenly distributes the pressure to multiple second diversion tubes 5. The water pressure and flow rate within each diversion tube are the same, and each atomizing nozzle 6 achieves a consistent atomization height and range. By providing multiple second diversion tubes 5 of varying lengths, the atomization area is guaranteed while ensuring uniform dust deposition, making it suitable for dust reduction in small foundation pits such as subway pits. In practice, the atomizing nozzles are spaced 3 meters apart, with a coverage radius of 5 meters.
[0020] Embodiment 2 of the present invention is a foundation pit excavation sprinkler system. Based on embodiment 1, each first diversion pipe 3 is provided with an on-off valve. When dust reduction is required in a part of the foundation pit, only the on-off valve on the corresponding first diversion pipe 3 needs to be opened, avoiding the waste of water resources caused by fully opening the sprinkler system.
[0021] Embodiment 3 of the present invention is a foundation pit excavation sprinkler system. Based on embodiment 2, a pressure regulating valve is provided on the first diversion pipe 3. The pressure regulating valve adjusts the water pressure in the first diversion pipe 3 according to the dust level in the foundation pit. While ensuring that the dust is settled, the water pressure can be appropriately reduced to further avoid water waste.
[0022] Example 4 of the present invention is a foundation pit excavation sprinkler system. Based on Example 3, the first multi-way connector 2 and the second multi-way connector 4 are quick-release connectors. This facilitates assembly and disassembly, facilitating daily construction. In practice, spring water pipe connectors may be used.
[0023] Embodiment 5 of the present invention is a foundation pit excavation sprinkler system. Based on any one of embodiments 1 to 4, the first diversion pipe 3 and the second diversion pipe 5 are both hoses, and the pipe walls are braided with PVC polyester yarn. They are pressure-resistant, bending-resistant, high-temperature-resistant, and have a long service life.
[0024] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.
Claims
1. A foundation pit excavation sprinkler system, characterized in that: The invention comprises a water supply main (1), a first multi-way joint (2), a first diversion pipe (3), a second multi-way joint (4), a second diversion pipe (5) and an atomizing nozzle (6), wherein the tail end of the water supply main (1) is connected to an external water source, the head end of the water supply main (1) is connected to the first multi-way joint (2), a plurality of the first diversion pipes (3) are connected in parallel on the side of the first multi-way joint (2) facing away from the water supply main (1), the tail end of each first diversion pipe (3) is connected to the second multi-way joint (4), the side of the second multi-way joint (4) facing away from the first diversion pipe (3) is connected in parallel to a plurality of the second diversion pipes (5), the lengths of the second diversion pipes (5) connected to the same second multi-way joint (4) increase step by step, and the tail end of each second diversion pipe (5) is provided with the atomizing nozzle (6) facing upward.
2. A foundation pit excavation spray system according to claim 1, characterized in that: Each of the first branch pipes (3) is provided with an on-off valve.
3. A foundation pit excavation spraying system according to claim 2, characterized in that: Each of the first shunt pipes (3) is provided with a pressure regulating valve.
4. A foundation pit excavation spraying system according to claim 3, characterized in that: The connectors of the first multi-way connector (2) and the second multi-way connector (4) are both quick-release connectors.
5. A foundation pit excavation spraying system according to any one of claims 1 to 4, characterized in that: The first shunt pipe (3) and the second shunt pipe (5) are both hoses, and the pipe walls are braided from PVC polyester yarns.