A precipitation recharge integrated device

Abstract

The utility model belongs to foundation pit engineering construction technology field especially, and relates to a kind of integrated equipment of precipitation recharge, including filter device and precipitation tube well, further including recharge tube well, the inner wall of recharge tube well is fixedly connected with pulse assembly, sealing assembly is equipped at the pipe orifice of recharge tube well, and the pressure storage cavity is formed between recharge tube well and pulse assembly, and sealing assembly is used to seal pressure storage cavity;Pulse assembly includes the mounting ring fixedly connected with the inner wall of recharge tube well, the inner wall of mounting ring is slidably connected with pressure relief cylinder, and the outer wall of pressure relief cylinder is provided with several pressure relief holes that are evenly distributed in circumference, compressed gas is filled into pressure storage cavity by air pump, when gas pressure reaches critical value, pressure overcomes the resistance of pre-punching pressure cylinder and return spring, and pushes pressure relief cylinder to open pressure relief hole, high-pressure gas is released to form pulse instantaneously, and the problem of recharge well blockage and low recharge efficiency is effectively solved by pneumatic pulse and backflow protection, and the effect and stability of groundwater recharge are improved.

Description

Technical Field

[0001] This utility model belongs to the field of foundation pit construction technology, and in particular relates to an integrated dewatering and recharge equipment. Background Technology

[0002] In the construction of urban infrastructure in complex environments, the excavation of foundation pits for underpasses near high-rise buildings faces severe technical challenges. Effective dewatering operations are necessary to control the groundwater level during foundation pit excavation, but traditional dewatering methods can easily cause ground subsidence, which can adversely affect nearby high-rise buildings and existing pipelines.

[0003] In the construction of tunnels and high-rise building foundation pits, the geological conditions are complex, the groundwater types are diverse, and the dewatering technology requirements are extremely high. Traditional foundation pit dewatering methods mostly use well dewatering or wellpoint dewatering, but in complex environments, simple pumping and dewatering can easily cause problems such as ground subsidence, building tilting, and pipeline deformation. In order to control these adverse effects, a technical solution combining dewatering and recharge is needed, that is, while dewatering, the treated groundwater is recharged into the strata to maintain groundwater level balance and reduce disturbance to the surrounding environment.

[0004] Traditional recharge methods often employ continuous gravity recharge, which has low efficiency and cannot meet the high-flow, long-term recharge requirements during foundation pit construction. Secondly, recharge wells are prone to filter material blockage during long-term use, especially under complex geological conditions, where the blockage problem is more serious, affecting the recharge effect and construction progress. Utility Model Content

[0005] In view of the technical problems existing in the background art, this utility model provides an integrated rainwater recharge equipment.

[0006] To achieve the above objectives, the technical solution provided by this utility model is as follows:

[0007] An integrated rainwater recharge equipment includes a filtration device and a rainwater well, characterized in that: it also includes a recharge well, a pulse component is fixedly connected to the inner wall of the recharge well, a sealing component is provided at the pipe opening of the recharge well, a pressure accumulating cavity is formed between the recharge well and the pulse component, and the sealing component is used to seal the pressure accumulating cavity.

[0008] The pulse assembly includes an installation ring fixedly connected to the inner wall of the reinjection well. A pressure relief cylinder is slidably connected to the inner wall of the installation ring. Several pressure relief holes are evenly distributed in the circumference on the outer wall of the pressure relief cylinder. A retaining ring is fixedly connected to the outer end of the pressure relief cylinder. An accumulator cylinder is fixedly connected to the bottom end of the retaining ring. The bottom end of the accumulator cylinder is fixedly connected to the inner wall of the reinjection well through several support plates.

[0009] Optionally, the accumulator cylinder includes a piston rod fixedly connected to the bottom end of a retaining ring, a piston fixedly connected to the bottom end of the piston rod, and a cylinder body slidably connected to the outer end of the piston.

[0010] Optionally, a first limiting ring is fixedly connected to the bottom end of the retaining ring, a support ring is provided at the top end of the cylinder body, a second limiting ring is fixedly connected to the top end of the support ring, and a accumulating spring is provided between the first limiting ring and the second limiting ring. The top of the accumulating spring abuts against the retaining ring, and the bottom of the accumulating spring abuts against the support ring.

[0011] Optionally, a lower sealing ring is fixedly connected to the top of the retaining ring, and an upper sealing ring is fixedly connected to the bottom of the mounting ring.

[0012] Optionally, the sealing assembly includes a mounting flange that is fixedly connected to the inlet of the reinjection pipe well. A pressure ring is fixedly connected to the bottom end of the mounting flange, and a fixing ring is fixedly connected to the inner wall of the reinjection pipe well. A sealing element is provided between the pressure ring and the fixing ring. Several grooves are provided at the top and bottom ends of the sealing element, and a sealing ring is provided in each of the grooves.

[0013] Optionally, the outer wall of the reinjection well is fixedly connected with symmetrically arranged reinjection water pipes, each of which is equipped with a shut-off valve. The shut-off valve is connected to the outlet end of the water pump. The outer wall of the reinjection well is fixedly connected with a pressure relief pipe, which is equipped with a pressure relief valve. The reinjection well is surrounded by a protective sleeve.

[0014] Optionally, an air pump is fixedly connected to the top of the filter device, and the outlet end of the air pump is fixedly connected to the mounting flange through a pipe and communicates with the accumulator cavity.

[0015] Optionally, the filtration device is fixedly connected to the outlet end of the vacuum pump via a pipe, and the inlet end of the vacuum pump extends to the bottom of the dewatering well.

[0016] This utility model has the following advantages and beneficial effects:

[0017] This invention utilizes a composite pressure-accumulating structure composed of a pre-pressurized cylinder and a return spring. The pulse assembly includes a pressure relief cylinder and several pressure relief holes. The pressure-accumulating cylinder is pre-filled with compressed gas, and in conjunction with the return spring, it actively generates and controls pulse release, improving recharge efficiency. This overcomes the technical shortcomings of traditional continuous gravity recharge, which suffers from low efficiency and difficulty in meeting the high-flow, long-term recharge requirements during foundation pit construction. Furthermore, the pulse recharge mechanism effectively prevents filter material blockage in the recharge wells. Especially under complex geological conditions, the pulse impact can promptly clean the filter material, maintaining the long-term stable operation of the recharge wells and avoiding the impact of blockage on recharge effectiveness and construction progress. This ensures the reliability and continuity of the recharge system throughout the entire foundation pit construction period. Attached Figure Description

[0018] Figure 1This is a partial view of the overall structure of the integrated rainwater recharge equipment of this utility model;

[0019] Figure 2 This is a front view of the integrated rainwater recharge equipment of this utility model;

[0020] Figure 3 This utility model Figure 2 A cross-sectional view along the AA direction;

[0021] Figure 4 This utility model Figure 3 A cross-sectional view along the BB direction;

[0022] Figure 5 This utility model Figure 3 A magnified view of a section at point C;

[0023] Figure 6 This utility model Figure 3 A magnified view of a section at point D;

[0024] Figure 7 This is a structural diagram of the pulse component of this utility model;

[0025] Figure 8 This is a structural diagram of the sealing assembly of this utility model.

[0026] Reference numerals in the attached drawings: 1. Filter device; 2. Dewatering well; 3. Recharge well; 4. Accumulation cavity; 5. Mounting ring; 6. Pressure relief cylinder; 601. Pressure relief hole; 7. Snap ring; 8. Accumulation cylinder; 801. Piston rod; 802. Piston; 803. Cylinder body; 9. Support plate; 10. First limiting ring; 11. Support ring; 12. Second limiting ring; 13. Accumulation spring; 14. Lower sealing ring; 15. Upper sealing ring; 16. Mounting flange; 17. Pressure ring; 18. Fixing ring; 19. Seal; 20. Groove; 21. Sealing ring; 22. Recharge water pipe; 23. Shut-off valve; 24. Pressure relief pipe; 25. Pressure relief valve; 26. Protective sleeve; 27. Air pump. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0028] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0029] Example

[0030] like Figure 1 As shown, an integrated rainwater recharge device includes a filter device 1 and a rainwater well 2, as well as a recharge well 3. A pulse component is installed in the recharge well 3, and a reliable pressure-accumulating recharge system is formed with the recharge well 3 through a pulse mechanism.

[0031] like Figure 1 and Figure 4 As shown, a pulse assembly is fixedly connected to the inner wall of the reinjection pipe well 3, and a pressure accumulator cavity 4 is formed between the pulse assembly and the reinjection pipe well 3. A sealing assembly is provided at the pipe opening of the reinjection pipe well 3. The sealing assembly is used to seal the pressure accumulator cavity 4 to ensure the airtightness of the system and prevent compressed gas leakage.

[0032] like Figure 2 - Figure 8 As shown, the pulse assembly includes an installation ring 5 fixedly connected to the inner wall of the reinjection well 3. The pulse assembly also includes a pressure relief cylinder 6, which is slidably connected to the inner wall of the installation ring 5 and can move axially. The outer wall of the pressure relief cylinder 6 has several circumferentially evenly distributed pressure relief holes 601. When the pressure relief cylinder 6 is in the upper position, the pressure relief holes 601 are blocked by the installation ring 5. When the pressure relief cylinder 6 moves down, the pressure relief holes 601 are exposed, and the compressed gas is instantly released through the pressure relief holes 601 to the bottom of the pulse assembly, impacting the water at the bottom of the reinjection well 3.

[0033] The outer end of the pressure relief cylinder 6 is fixedly connected to a retaining ring 7, and the bottom end of the retaining ring 7 is fixedly connected to a pressure accumulator cylinder 8. The pressure accumulator cylinder 8 includes a piston rod 801, a piston 802 and a cylinder body 803. The piston rod 801 is fixedly connected to the bottom end of the retaining ring 7, and the bottom end of the piston rod 801 is fixedly connected to the piston 802. The piston 802 is slidably connected in the cylinder body 803 to form a sealed air pressure chamber.

[0034] The accumulator cylinder 8 is pre-filled with compressed gas. The bottom end of the accumulator cylinder 8 is fixedly connected to the inner wall of the reinjection well 3 through several support plates 9, which are evenly distributed in the circumferential direction, so as to provide support without affecting the pressure relief. The bottom end of the retaining ring 7 is fixedly connected to the first limiting ring 10, and the top end of the cylinder body 803 is provided with a support ring 11. The top end of the support ring 11 is fixedly connected to the second limiting ring 12.

[0035] A pressure accumulator spring 13 is provided between the first limiting ring 10 and the second limiting ring 12. The pressure accumulator spring 13 is a cylindrical compression spring. The top of the pressure accumulator spring 13 abuts against the retaining ring 7, and the bottom abuts against the support ring 11. When the pressure in the pressure accumulator cavity 4 increases, the pressure pushes the pressure relief cylinder 6 and the retaining ring 7 to move downward, compressing the pressure accumulator spring 13. At the same time, the pre-charged gas in the pressure accumulator cylinder 8 is also further compressed. The combination of the two energy storage methods provides a stronger pulse force. This dual resistance mechanism makes the opening of the pressure relief cylinder 6 have a clear critical pressure value, ensuring the accuracy and consistency of pulse release.

[0036] like Figure 7 - Figure 8 As shown, to ensure the system's airtightness, a lower sealing ring 14 is fixedly connected to the top of the retaining ring 7, and an upper sealing ring 15 is fixedly connected to the bottom of the mounting ring 5. The upper sealing ring 15 and the lower sealing ring 14 are made of nitrile rubber or fluororubber to ensure that no gas leakage occurs during the pressure storage stage.

[0037] The sealing assembly includes a mounting flange 16, which is fixedly connected to the inlet of the reinjection pipe well 3. A pressure ring 17 is fixedly connected to the bottom end of the mounting flange 16, and a fixing ring 18 is fixedly connected to the inner wall of the reinjection pipe well 3. A sealing element 19 is provided between the pressure ring 17 and the fixing ring 18. The sealing element 19 adopts a multi-layer sealing structure, with several grooves 20 opened at both the top and bottom ends. A sealing ring 21 is provided in the groove 20. The sealing ring 21 is made of rubber material with different hardness to form a gradient seal, which effectively prevents high-pressure gas leakage.

[0038] like Figure 2 - Figure 4 As shown, symmetrically arranged reinjection water pipes 22 are fixedly connected to the outer wall of the reinjection pipe well 3. Each reinjection water pipe 22 is equipped with a shut-off valve 23. The shut-off valve 23 is connected to the outlet end of the conveying water pump. The shut-off valve 23 has a one-way valve function, allowing reinjection water to enter the reinjection pipe well 3. It automatically closes when the pulse is released to prevent water backflow caused by high-pressure gas impact and protect the upstream conveying system and water pump equipment.

[0039] The outer wall of the reinjection well 3 is also fixedly connected to a pressure relief pipe 24. The top end of the pressure relief pipe 24 is equipped with a pressure relief valve 25. The pressure relief valve 25 is used for pressure balance adjustment after pulse release. When the water level in the well changes and compresses the gas below the pulse component, the excess gas is released in time to prevent the formation of back pressure that affects the effect of the next pulse and ensure the continuous and stable operation of the system.

[0040] A pump 26 is fixedly connected to the top of the filter device 1. The outlet end of the pump 26 is fixedly connected to the mounting flange 16 through a pipe and communicates with the accumulator cavity 4. The pump 26 is used to supplement compressed air to the accumulator cavity 4 to maintain the working pressure of the system. The filter device 1 is fixedly connected to the outlet end of the vacuum pump through a pipe. The inlet end of the vacuum pump extends to the bottom of the dewatering well 2 to realize the integrated operation of dewatering and reinjection.

[0041] During use, the air pump 26 continuously fills the accumulator cavity 4 with compressed gas. When the gas pressure gradually increases to the set critical value, the pressure of the compressed gas overcomes the elastic force of the accumulator spring 13 and the back pressure of the gas in the pre-pressurized cylinder 8, pushing the pressure relief cylinder 6 to move down instantly. The pressure relief hole 601 is exposed from the inner wall of the mounting ring 5, and the high-pressure gas is rapidly released into the reinjection water through the pressure relief hole 601, forming a strong gas pulse.

[0042] The gas pulse generates strong disturbance and shock waves in the reinjection water, effectively agitating the water in the well and preventing suspended solids from settling and filter media from clogging. At the moment of the pulse, the shut-off valve 23 automatically closes to prevent the shock wave from propagating backward through the reinjection water pipe and to protect the upstream equipment. When the pressure in the accumulator cavity 4 drops rapidly, the thrust of the accumulator spring 13 and the pre-pressurized cylinder 8 causes the pressure relief cylinder 6 to quickly reset and move upward, and the pressure relief hole 601 is blocked again.

[0043] After the pulse is released, if the water level in the well rises and compresses the residual gas below the pulse assembly, the pressure relief valve 25 will open in time to release the compressed excess gas, prevent the formation of back pressure that would affect the next pulse, and ensure that each pulse achieves the expected effect. The shut-off valve 23 will then reopen, and the system will prepare for the next pulse cycle.

[0044] In this invention, a compressed gas is continuously pumped into the accumulator cavity using an air pump. Combined with the composite resistance control mechanism of the pre-pressurization cylinder and the return spring, precise pressure triggering is achieved through the sliding control of the pressure relief cylinder. With the backflow protection of the shut-off valve and the pressure balance adjustment of the pressure relief valve, a complete pneumatic pulse reinjection system is formed, which can improve reinjection efficiency, effectively prevent reinjection well blockage, extend the service life of reinjection wells, and enhance the stability and reliability of the reinjection system.

[0045] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An integrated rainwater recharge equipment, comprising a filtration device (1) and a rainwater well (2), characterized in that: It also includes a reinjection pipe well (3), the inner wall of which is fixedly connected with a pulse assembly, and a sealing assembly is provided at the pipe opening of the reinjection pipe well (3). A pressure accumulating cavity (4) is formed between the reinjection pipe well (3) and the pulse assembly, and the sealing assembly is used to seal the pressure accumulating cavity (4). The pulse assembly includes an installation ring (5) fixedly connected to the inner wall of the reinjection well (3). A pressure relief cylinder (6) is slidably connected to the inner wall of the installation ring (5). The outer wall of the pressure relief cylinder (6) is provided with several pressure relief holes (601) evenly distributed in the circumference. A retaining ring (7) is fixedly connected to the outer end of the pressure relief cylinder (6). A pressure accumulator cylinder (8) is fixedly connected to the bottom end of the retaining ring (7). The bottom end of the pressure accumulator cylinder (8) is fixedly connected to the inner wall of the reinjection well (3) through several support plates (9).

2. The integrated rainwater recharge equipment according to claim 1, characterized in that: The accumulator cylinder (8) includes a piston rod (801) fixedly connected to the bottom end of a retaining ring (7), a piston (802) fixedly connected to the bottom end of the piston rod (801), and a cylinder body (803) slidably connected to the outer end of the piston (802).

3. The integrated rainwater recharge equipment according to claim 2, characterized in that: The bottom end of the retaining ring (7) is fixedly connected to a first limiting ring (10), the top end of the cylinder (803) is provided with a support ring (11), the top end of the support ring (11) is fixedly connected to a second limiting ring (12), a accumulating spring (13) is provided between the first limiting ring (10) and the second limiting ring (12), the top of the accumulating spring (13) abuts against the retaining ring (7), and the bottom of the accumulating spring (13) abuts against the support ring (11).

4. The integrated rainwater recharge equipment according to claim 1, characterized in that: The top end of the retaining ring (7) is fixedly connected to a lower sealing ring (14), and the bottom end of the mounting ring (5) is fixedly connected to an upper sealing ring (15).

5. The integrated rainwater recharge equipment according to claim 1, characterized in that: The sealing assembly includes an installation flange (16) fixedly connected to the inlet of the reinjection pipe well (3). A pressure ring (17) is fixedly connected to the bottom end of the installation flange (16). A fixing ring (18) is fixedly connected to the inner wall of the reinjection pipe well (3). A sealing element (19) is provided between the pressure ring (17) and the fixing ring (18). Several grooves (20) are provided at the top and bottom ends of the sealing element (19). A sealing ring (21) is provided in each of the several grooves (20).

6. The integrated rainwater recharge equipment according to claim 1, characterized in that: The outer wall of the reinjection well (3) is fixedly connected with symmetrically arranged reinjection water pipes (22), and each reinjection water pipe (22) is provided with a shut-off valve (23). The shut-off valve (23) is connected to the outlet end of the water pump. The outer wall of the reinjection well (3) is fixedly connected with a pressure relief pipe (24), and the pressure relief pipe (24) is provided with a pressure relief valve (25). The periphery of the reinjection well (3) is provided with a protective sleeve (26).

7. The integrated rainwater recharge equipment according to claim 1, characterized in that: The top of the filter device (1) is fixedly connected to an air pump (27), and the outlet end of the air pump (27) is fixedly connected to the mounting flange (16) through a pipe and communicates with the accumulator cavity (4).

8. The integrated rainwater recharge equipment according to claim 1, characterized in that: The filter device (1) is fixedly connected to the outlet end of the vacuum pump through a pipe, and the inlet end of the vacuum pump extends to the bottom of the dewatering well (2).

Images