Underground stereo garage drainage structure

Abstract

The utility model discloses an underground stereo garage drainage structure which comprises a catchment well and a water collecting tank which are arranged at the bottom of an underground stereo garage, the water collecting tank is higher than the catchment well, a submersible sewage pump is arranged at the bottom of the catchment well, and a water outlet of the submersible sewage pump is communicated with the top of the water collecting tank through a first lifting pipe. A drainage pipe, a drainage valve and a second lifting pipe are fixedly communicated with the bottom of the water collecting tank in sequence, and the second lifting pipe is communicated with a municipal sewer line; the portion, located between the booster pump and the drainage valve, of the drainage pipe is sequentially connected with a backflow valve and a backflow pipe, and the end, away from the backflow valve, of the backflow pipe is communicated with the catchment well. The inspection state is executed once at set intervals, and water in the water collecting tank sequentially flows through the booster pump, the drainage pipe, the return valve, the return pipe, the water collecting well and the submersible sewage pump and then enters the water collecting tank again to form circulation. Therefore, the submersible sewage pump and the booster pump are prevented from being blocked due to long-time non-operation, and the submersible sewage pump and the booster pump are always kept in an available state.

Description

TECHNICAL FIELD

[0001] The utility model relates to a stereo garage technical field especially relates to a underground stereo garage drainage structure. BACKGROUND

[0002] With the gradual increase of the automobile ownership, in order to reduce the floor area, the underground garage is a preferred scheme. The well type underground stereo garage is a new form of underground stereo garage, and the basic structure is to dig a round well space underground, and the vehicle is directly parked in each layer of the underground space through the elevator located in the center of the round well. This design actually transfers the elevator type intelligent stereo garage on the ground to the underground, thereby saving the ground space and improving the parking efficiency.

[0003] The underground stereo garage is located underground, and the depth is usually more than twenty meters, and even can reach forty to fifty meters. The bottom is easy to accumulate water, and the source of the accumulated water mainly includes underground seepage, side wall seepage and water leaking from the top in the rain and snow weather. Therefore, the underground stereo garage is provided with a drainage system at the bottom. Usually, a water collecting well is arranged at the bottom of the underground stereo garage, which is used for collecting the water at the bottom of the underground garage, and then the water is pumped to the municipal drainage pipeline on the ground through the drainage pump.

[0004] The water level switch is arranged in the water collecting well, and when the water level in the water collecting well reaches the high position, the drainage pump starts to pump out the water in the water collecting well. Therefore, the drainage pump needs to be maintained in the available state all the time. Since it takes a long time for the water in the water collecting well to reach the high water level, it may be several weeks or several months. Since the drainage pump does not run for a long time, the rotating parts are easy to be stuck, so that the drainage pump cannot be started, and then the accumulated water in the water collecting well cannot be discharged in time. Therefore, after the drainage pump is not operated for a long time, it cannot be determined whether the drainage pump is in the available state. If the accumulated water in the water collecting well cannot be discharged in time due to the fact that the drainage pump cannot be started in time, the accumulated water is easy to overflow and cause the equipment at the bottom of the underground stereo garage to be damaged due to being flooded.

[0005] The patent with publication number CN208815848U discloses a drainage ground structure of underground garage, and the ground is paved by sequentially stacking a cushion layer, a bottom plate, a drainage roll material and a concrete surface layer from bottom to top. The ground paving is provided with a plurality of drainage ditches along the edge of the vertical wall, and the drainage ditches located in the same region are connected with each other. Each drainage ditch of each region is connected with a water collecting well, and the drainage roll material is in communication with the drainage ditch of the region, so as to facilitate rapid drainage. Since the water in the water collecting well is collected to the set water level, the drainage pump starts to run. Therefore, if the drainage pump is not operated for a long time, it is easy to be stuck and cannot be started normally. UTILITY MODEL CONTENTS

[0006] The utility model wants to solve the technical problem of improving a kind of underground stereo garage drainage structure, for solving the problem that the drainage pump of current underground stereo garage is prone to be stuck due to long time non-operation, and then leading to the problem that waterlogging cannot be discharged in time.

[0007] To solve the above technical problems, the utility model adopts the technical scheme that

[0008] A kind of underground stereo garage drainage structure, including the water collection well and water collecting tank being arranged at the bottom of underground stereo garage, the water collecting tank is higher than water collection well, the bottom of the water collection well is equipped with submersible sewage pump, the water outlet of the submersible sewage pump is communicated with the top of water collecting tank by first water lifting pipe, the bottom of the water collecting tank is fixedly communicated with drainage pipe, drain valve and second water lifting pipe in sequence, the second water lifting pipe is communicated with municipal sewer pipe;Boosting pump is equipped on the drainage pipe, backflow valve and backflow pipe are sequentially connected in the part of drainage pipe between boosting pump and drain valve, the end of backflow pipe away from backflow valve is communicated with water collection well.

[0009] Further, the water collecting tank is equipped with filter screen, the inside of water collecting tank is divided into upper sewage chamber and lower clean water chamber by filter screen, the first water lifting pipe is communicated with sewage chamber, and the drainage pipe is communicated with the bottom of clean water chamber.

[0010] Further, the second water lifting pipe and backflow pipe are equipped with drain valve, and the two ends of the drain valve are fixedly communicated with the second water lifting pipe and backflow pipe respectively.

[0011] Further, the top of the water collecting tank is fixedly communicated with water replenishing pipe, and the water replenishing pipe is equipped with water replenishing valve;The bottom of the water collecting tank is fixedly communicated with drain pipe, and the drain pipe is equipped with drain valve.

[0012] Further, the end of backflow pipe away from backflow valve is close to submersible sewage pump, and the end is towards the water inlet below of submersible sewage pump.

[0013] Further, the bottom of the underground stereo garage is equipped with first water collection groove along its edge, and the bottom of the underground stereo garage is equipped with drainage ditch for communicating the first water collection groove and water collection well.

[0014] Further, the bottom of the underground stereo garage is equipped with second water collection groove at the position corresponding to the edge of its elevator, and the drainage ditch is communicated with the second water collection groove.

[0015] The positive effect of the utility model is that

[0016] The utility model discloses a water collecting well and water collecting tank are equipped with, the bottom of water collecting well is equipped with the submersible sewage pump, and the water outlet of submersible sewage pump is connected with the top of water collecting tank, and water collecting tank is connected with drain pipe, drain valve and second water raising pipe, and second water raising pipe is connected with municipal sewerage, and the booster pump is equipped on drain pipe, and the part of drain pipe between booster pump and drain valve is connected with reflux valve and reflux pipe in proper order, and reflux pipe is connected with water collecting well. Periodically start submersible sewage pump and booster pump, and the water in water collecting tank flows through booster pump, drain pipe, reflux valve, reflux pipe, water collecting well and submersible sewage pump in proper order, and then reenters into water collecting tank and forms circulation. Therefore, every time interval, execute above-mentioned state 15 to 30 minutes, thereby prevent submersible sewage pump and booster pump from happening to be stuck because of long time not running, thereby guarantee that submersible sewage pump and booster pump always keep in available state. If submersible sewage pump or booster pump happens to be stuck, corresponding current representation number will increase compared with normal operation, thereby remind relevant personnel to overhaul in time. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the system principle diagram of the utility model;

[0018] Figure 2 It is the use diagram of the utility model;

[0019] Figure 3 It is Figure 2 the enlarged view of bottom part;

[0020] Figure 4 It is Figure 3 the top view of;

[0021] In the drawing:

[0022] 1, first water collecting groove;2, drain ditch;3, second drain groove;4, water collecting well;5, submersible sewage pump;6, first water raising pipe;7, reflux pipe;8, water replenishing pipe;9, reflux valve;10, drain valve;11, second water raising pipe;12, drain valve;13, drain pipe;14, water replenishing valve;15, booster pump;16, filter screen;17, water collecting tank;18, blowdown valve;19, blowdown pipe;20, transmission mechanism;21, water collecting well low water level switch;22, water collecting well high water level switch;23, water collecting tank low water level switch;24, water collecting tank medium water level switch;25, water collecting tank high water level switch;26, sewage chamber;27, clean water chamber;28, water flow switch. DETAILED DESCRIPTION

[0023] Example 1

[0024] As Figures 1 to 4As shown, a kind of underground stereo garage drainage structure, including the water collection well 4 being arranged at the center of the bottom of underground stereo garage, rectangular water collecting tank 17 is installed on the drip surface of the bottom of underground stereo garage close to side wall, and the water collecting tank 17 is higher than the water collection well 4.The bottom surface of the water collection well 4 is inclined plane, and the lowest part of the inclined plane is pump pit, and the bottom of the pump pit is equipped with sewage pump 5, and the water outlet of the sewage pump 5 is communicated with the top left side of water collecting tank 17 by first water lifting pipe 6, and the bottom right side of water collecting tank 17 is sequentially fixed with drain pipe 13, check valve, drain valve 12 and second water lifting pipe 11, and the top end of the second water lifting pipe 11 is communicated with municipal sewer pipe.The drain pipe 13 is equipped with booster pump 15, and the booster pump 15 is close to the bottom of water collecting tank 17, and the booster pump 15 adopts horizontal multi-stage pump.

[0025] The part between the booster pump 15 and the drain valve 12 of the drain pipe 13 is sequentially connected with backflow valve 9, water flow switch 26 and backflow pipe 7, one end of the backflow pipe 7 away from the backflow valve 9 extends into the pump pit at the bottom of the water collection well 4 and is close to the sewage pump 5, and the end is towards the water inlet below the sewage pump 5.

[0026] The water collecting tank 17 is equipped with filter screen 16, and the inside of the water collecting tank 17 is divided into upper sewage chamber 26 and lower clean water chamber 27 by the filter screen 16, the first water lifting pipe 6 is communicated with the sewage chamber 26, and the drain pipe 13 is communicated with the bottom of the clean water chamber 27.

[0027] The utility model also has controller, the water collection well 4 is sequentially provided with water collection well low water level switch 21 and water collection well high water level switch 22 from low to high, and the clean water chamber 27 is provided with water collecting tank low water level switch 23, water collecting tank middle water level switch 24 and water collecting tank high water level switch 25 from low to high.

[0028] The sewage pump 5, booster pump 15, water collection well low water level switch 21, water collection well high water level switch 22, water collecting tank low water level switch 23, water collecting tank middle water level switch 24 and water collecting tank high water level switch 25 are electrically connected with the controller.

[0029] The utility model has two kinds of working conditions:

[0030] 1, drainage state:

[0031] When the water level in the sump well 4 rises and triggers the sump well high water level switch 22, the controller starts the sewage pump 4 to pump the water in the sump well 4 to the sewage chamber 26, and the filtered water enters the clean water chamber 27 after being filtered by the filter screen 16. When the water level in the clean water chamber 27 reaches the position of the sump tank high water level switch 25, the controller starts the booster pump 15, and the water in the clean water chamber 27 is sequentially pumped through the booster pump 15, the one-way valve and the drain valve 12, and then discharged to the municipal sewer pipe through the second water lifting pipe 11. When the water level in the sump well 4 drops to the position of the sump well low water level switch 21, the sewage pump 5 stops running. When the water level in the sump tank 17 drops to the position of the sump tank medium water level switch 24, the booster pump 15 stops running.

[0032] 2. Inspection state:

[0033] The backflow valve 9 is opened, and the drain valve 12 is closed. The controller sequentially starts the booster pump 15 and the sewage pump 4, so that the water in the clean water chamber 27 sequentially flows through the booster pump 15, the drain pipe 13, the check valve, the backflow valve 9, the water flow switch 28, the backflow pipe 7, the sump well 4, the sewage pump 5 and the first water lifting pipe 6, enters the sewage chamber 26, and then reflows to the clean water chamber 27 after being filtered by the filter screen 16, forming a circulation. The water flow switch 28 is used to detect whether there is water flow through the backflow pipe 7.

[0034] Therefore, the inspection state is performed for 15 to 20 minutes every certain period of time (e.g., 1 week), so that the sewage pump 4 and the booster pump 15 are run, thereby preventing the sewage pump 4 and the booster pump 15 from being stuck due to long-term non-operation, so as to ensure that the sewage pump 4 and the booster pump 15 are always in a serviceable state. If the sewage pump 4 or the booster pump 15 is stuck during the inspection state, the current indication number on the controller will increase, and the water flow switch 28 will also fail to detect the water flow signal, thereby reminding the relevant personnel to timely perform maintenance.

[0035] Because the underground stereo garage's accumulated water contains silt or other dirt, when using common multi-stage pump as drainage pump, the dirt and silt can easily block the impeller flow passage and cause the accumulated water to be unable to be discharged smoothly. The utility model uses the submersible sewage pump 4 to discharge the sewage in the water collecting well 4, and the submersible sewage pump 4 is a water pump specially used for discharging sewage, and it does not need to be primed before starting. However, the submersible sewage pump 4 is a single-stage pump, and because its impeller is open or semi-open, although the medium has good passability, its lift is low and cannot meet the lift requirement of dozens of meters. The underground stereo garage has small drainage capacity requirement, and the flow is generally 10 to 40 cubic meters / hour. The lift of such submersible sewage pump 4 is usually very low, generally a few meters to a dozen meters, far from meeting the lift requirement of the underground stereo garage's drainage. Therefore, after filtering the sewage, the water is discharged into the municipal sewer pipe through the booster pump 15 for secondary pressurization. Because the booster pump 15 is in communication with the bottom of the water collecting tank 17 and is located at the same height, the water in the water collecting tank 17 can directly flow into the booster pump 15, so the booster pump 15 does not need to be primed before starting and can be directly started.

[0036] The water flowing back through the backflow pipe 7 is sprayed out from the bottom end of the backflow pipe 7, which can flush the silt and dirt accumulated near the water inlet of the submersible sewage pump 5 and discharge them through the submersible sewage pump 5, thereby preventing the silt and dirt from being accumulated and hardened in the water inlet of the submersible sewage pump 5 for a long time, and further preventing the water inlet of the submersible sewage pump 5 from being blocked, and further preventing the submersible sewage pump 5 from being unable to start and run normally.

[0037] Embodiment 2

[0038] The difference between this embodiment and embodiment 1 is that:

[0039] The second water lifting pipe 11 and the backflow pipe 7 are provided with a drain valve 10, and the two ends of the drain valve 10 are fixedly communicated with the second water lifting pipe 11 and the backflow pipe 7 respectively. Before the booster pump 15 stops running, the drain valve 10 is opened, and then the booster pump 15 is closed. At this time, the water remaining in the second water lifting pipe 11 will flow into the water collecting well 4 through the drain valve 10 and the backflow pipe 7, thereby greatly reducing the damage to the booster pump 15 or the check valve caused by the water hammer effect of the water remaining in the second water lifting pipe 11 when the booster pump 15 stops running.

[0040] The drain valve 10, the backflow valve 9 and the drain valve 12 all adopt electric valves and are electrically connected with the controller to facilitate operation.

[0041] Embodiment 3

[0042] The difference between this embodiment and embodiment 2 is that:

[0043] The top of the water collecting tank 17 is fixedly communicated with a water supplement pipe 8 which is communicated with a municipal water supply pipe, and the water supplement pipe 8 is provided with a water supplement valve 14. The water supplement valve 14 is opened to supplement water into the water collecting tank 17 to ensure that the water quantity meets the requirement of the patrol state. The bottom of the water collecting tank 17 is fixedly communicated with a sewage pipe 19 which is provided with a sewage valve 18. The sewage valve 18 and the water supplement valve 14 are also electric valves.

[0044] The bottom of the underground stereo garage is provided with a first water collecting groove 1 in annular shape along the edge thereof, and the bottom of the underground stereo garage is provided with four cross-distributed drainage ditches 2 which communicate the first water collecting groove 1 and the water collecting well 4. The bottom of the underground stereo garage is provided with a second water collecting groove 3 at a position corresponding to the edge of the elevator thereof, and the drainage ditches 2 are communicated with the second water collecting groove 3, and the sewage pipe 19 is communicated with the first water collecting groove 1 or the drainage ditches 2.

[0045] The above-mentioned embodiment describes the content in more detail and concretely, expresses the preferred embodiment of the utility model, is only used for explaining the technical thought and characteristics of the utility model, and its purpose is to enable the person skilled in the art to understand the content of the utility model and to implement it, but is not limited to the utility model, and the patent range of the utility model cannot be limited to the embodiment, that is, any equivalent change or modification of the spirit disclosed by the utility model, the partial improvement of the system inside and the change between the subsystems, the transformation and the like without departing from the structure of the utility model are still the patent range of the utility model.

Claims

1. A drainage structure for an underground multi-level parking garage, characterized in that, The system includes a water collection well (4) and a water collection tank (17) located at the bottom of the underground parking garage. The water collection tank (17) is higher than the water collection well (4). A submersible sewage pump (5) is installed at the bottom of the water collection well (4). The outlet of the submersible sewage pump (5) is connected to the top of the water collection tank (17) through a first water supply pipe (6). A drain pipe (13), a drain valve (12), and a second water supply pipe (11) are fixedly connected to the bottom of the water collection tank (17) in sequence. The second water supply pipe (11) is connected to the municipal sewer pipe. A booster pump (15) is installed on the drain pipe (13). A return valve (9) and a return pipe (7) are connected in sequence at the part of the drain pipe (13) located between the booster pump (15) and the drain valve (12). The end of the return pipe (7) away from the return valve (9) is connected to the water collection well (4).

2. The drainage structure for an underground multi-level parking garage according to claim 1, characterized in that, The water collection tank (17) is equipped with a filter screen (16). The inside of the water collection tank (17) is divided into an upper sewage chamber (26) and a lower clear water chamber (27) by the filter screen (16). The first water supply pipe (6) is connected to the sewage chamber (26), and the drain pipe (13) is connected to the bottom of the clear water chamber (27).

3. The drainage structure for an underground multi-level parking garage according to claim 1, characterized in that, A drain valve (10) is provided between the second water supply pipe (11) and the return pipe (7), and the two ends of the drain valve (10) are fixedly connected to the second water supply pipe (11) and the return pipe (7) respectively.

4. The drainage structure for an underground multi-level parking garage according to claim 1, characterized in that, The top of the water collection tank (17) is fixedly connected to a water supply pipe (8), and a water supply valve (14) is provided on the water supply pipe (8); the bottom of the water collection tank (17) is fixedly connected to a sewage pipe (19), and a sewage valve (18) is provided on the sewage pipe (19).

5. The drainage structure for an underground multi-level parking garage according to claim 1, characterized in that, The end of the return pipe (7) away from the return valve (9) is close to the submersible pump (5), and this end faces downwards from the inlet of the submersible pump (5).

6. The drainage structure for an underground multi-level parking garage according to claim 1, characterized in that, The underground parking garage has a first water collection trough (1) at its bottom edge, and a drainage ditch (2) at its bottom that connects the first water collection trough (1) and the water collection well (4).

7. The drainage structure for an underground multi-level parking garage according to claim 6, characterized in that, The bottom of the underground parking garage is provided with a second water collection trough (3) at a position corresponding to the edge of its elevator, and the drainage ditch (2) is connected to the second water collection trough (3).

Images