CN213476936U - Dewatering well structure used in foundation pit - Google Patents

Abstract

The utility model relates to a construction technical field specifically is a precipitation well structure for in foundation ditch, including the earth's surface, the vertical precipitation well of having seted up downwards on the earth's surface, the top of precipitation well is equipped with the well head, the top outside of precipitation well is equipped with the installing support, the inside upper segment of precipitation well is equipped with the clay layer, the inside middle section of precipitation well is equipped with hollow pipe, the bottom inboard of precipitation well is equipped with the filter screen, the bottom of precipitation well is equipped with the water shutoff stopper, the inside below of precipitation well is equipped with the floating block, the bottom fixed mounting water pump of floating block, the connection is equipped with the outlet pipe on the delivery port of water pump, beneficial effect is: this practicality is provided with showy piece structure in precipitation well's inside, and showy piece passes through the location rope fastening on the bobbin, and the bottom fixed mounting water pump of showy piece is at the in-process that draws water on one side, can judge the water level of groundwater according to the location rope simultaneously, prevents that groundwater from extracting excessively, compares prior art, the utility model discloses the water level of judgement groundwater that can be better ensures construction quality and efficiency.

Description

Dewatering well structure used in foundation pit

Technical Field

The utility model relates to a construction technical field specifically is a precipitation well structure for in foundation ditch.

Background

In the construction process of a submarine tunnel, a plurality of dewatering wells are usually arranged in a foundation pit of a construction site, and the dewatering wells are used for reducing the water level of underground water and avoiding the influence on construction quality caused by the fact that low-level water flows into the foundation pit. But the structure of the existing dewatering well is too simple, and the defects of the existing dewatering well are mainly as follows:

1. when the water level of the dewatering well is lowered, a water pump is generally conveyed into the dewatering well, water in the dewatering well is pumped out by the water pump, but the depth of the dewatering well is generally below dozens of meters, the water level of underground water cannot be easily judged, so that the water pumping amount is not accurately grasped, the phenomenon of excessive underground water pumping is easily caused, and the soil and the foundation are firmly and firmly damaged;

2. the precipitation well bores gets and accomplishes the back, can the proruption groundwater gushing phenomenon sometimes, and groundwater spouts the thin and play from the precipitation well suddenly promptly, consequently must be timely cover the well head, however among the prior art, and not fine well lid structure, completion shutoff that can be rapid, for this, the utility model provides a precipitation well structure for in the foundation ditch is used for solving above-mentioned problem.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a precipitation well structure for in foundation ditch to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a precipitation well structure used in a foundation pit comprises a ground surface, wherein a precipitation well is vertically and downwards arranged on the ground surface, a well mouth is arranged at the top end of the precipitation well, an installation support is arranged on the outer side of the top of the precipitation well, a clay layer is arranged at the upper section in the precipitation well, a hollow circular pipe is arranged at the middle section in the precipitation well, a filter screen is arranged on the inner side of the bottom of the precipitation well, a water plugging plug is arranged at the bottom end of the precipitation well, a floating block is arranged below the inner part of the precipitation well, a water pump is fixedly installed at the bottom end of the floating block, a water outlet pipe is connected to a water outlet of the water pump, the top end of the water outlet pipe vertically penetrates through the well mouth upwards and extends outwards, the installation support is of a door-shaped structure, the bottom ends of two sides of the installation support are fixedly connected to the ground surface, a winding drum is rotatably connected, the bottom end of the positioning rope vertically extends downwards and is connected with the floating block, the end of an output shaft of the servo motor is connected with a driving gear, the driving gear is located above the driven gear, and the driving gear and the driven gear are meshed.

Preferably, the fixed cover in top of well head connects and is equipped with the position sleeve, the top of position sleeve evenly is equipped with the pole setting along outside circumferencial direction, the quantity of pole setting is a plurality of, and its top connects jointly and is equipped with the roof.

Preferably, the below of going up the roof is equipped with the well lid, the inboard of position sleeve is spliced the laminating and is equipped with the sealing washer, the outside of well lid is all run through by the pole setting, and the bottom external diameter of well lid equals the internal diameter of sealing washer.

Preferably, go up the equal fixed mounting telescopic cylinder in bottom both sides of roof, and go up the centre of a circle position of roof and well lid and all run through and seted up the through-hole, telescopic cylinder's the equal vertical downwards of piston head end portion and with the top fixed connection of well lid.

Preferably, the inside of precipitation well is equipped with the cable, the vertical downwardly extending of bottom of cable and be connected with the water pump, and cable, outlet pipe and location rope all pass in the through-hole on the well lid.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model is provided with a floating block structure in the dewatering well, the floating block is connected with the bobbin through the positioning rope bolt, the bottom end of the floating block is fixedly provided with the water pump, and the water level of the underground water can be judged according to the positioning rope simultaneously in the process of pumping water on one side, so that the excessive extraction of the underground water is prevented;

2. this practicality is at the top sliding connection well lid of well head, and the well lid passes through telescopic cylinder control its position, when groundwater blowout, can in time open the cylinder to go into the well head inboard with the well lid, accomplish the shutoff rapidly, compare prior art, the shutoff of precipitation well can be accomplished rapidly to this practicality, reduces the injury that groundwater gushes suddenly and causes the engineering.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a cross-sectional view of the wellhead structure of the present invention;

fig. 3 is an appearance schematic diagram of the structure of the present invention.

In the figure: the device comprises a ground surface 1, a dewatering well 2, a clay layer 3, a hollow round tube 4, a filter screen 5, a water plugging plug 6, a floating block 7, a water pump 8, a water outlet pipe 9, a cable 10, a wellhead 11, a mounting bracket 12, a winding drum 13, a servo motor 14, a positioning sleeve 15, a sealing ring 16, a manhole cover 17, an upright rod 18, an upper top plate 19 and a telescopic cylinder 20.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: the utility model provides a precipitation well structure for in foundation ditch, including earth's surface 1, precipitation well 2 has been seted up to vertical downwards on the earth's surface 1, precipitation well 2's top is equipped with well head 11, precipitation well 2's the top outside is equipped with installing support 12, precipitation well 2's inside upper segment is equipped with clay layer 3, precipitation well 2's inside middle section is equipped with hollow pipe 4, precipitation well 2's bottom inboard is equipped with filter screen 5, precipitation well 2's bottom is equipped with water shutoff stopper 6, clay layer 3, hollow pipe 4 and filter screen 5 and water shutoff stopper 6 all are as for the same as prior art, wherein filter screen 5's effect is the filtration soil sediment, it is too much to prevent the bottom of precipitation well 2 in impurity.

The inside below of precipitation well 2 is equipped with floats piece 7, floats the bottom fixed mounting water pump 8 of piece 7, connects on the delivery port of water pump 8 and is equipped with outlet pipe 9, and the top of outlet pipe 9 is vertical upwards to run through well head 11 and outwards extend, and it floats on the surface of groundwater all the time to float piece 7 for the plastics material makes, and outlet pipe 9 is the hose material, and it is discharged the water that water pump 8 extracted.

The mounting bracket 12 is a door-shaped structure, the bottom ends of two sides of the mounting bracket are fixedly connected to the earth surface 1, the center of the top end of the mounting bracket is rotatably connected with the winding reel 13, the servo motor 14 is fixedly mounted on one side of the top end of the mounting bracket, the winding reel 13 is wound with a positioning rope, the positioning rope is marked with a length size, a user can observe and determine the water level of groundwater, and the height of the floating block 7 from the ground is determined.

The fixed driven gear that cup joints in one side of bobbin 13, the vertical downwardly extending in bottom of location rope and be connected with showy piece 7, servo motor 14's output shaft end connection is equipped with the driving gear, the driving gear is located driven gear's top, and the meshing sets up between the two, therefore, through servo motor, can drive bobbin 13 rotatory, and then the position of control showy piece 7, and ensure that the location rope is in the state of tightening all the time, be convenient for better judgement ground water level.

Fixed cover of well head 2's top is fixed to be connected and is equipped with position sleeve 15, and the top of position sleeve 15 evenly is equipped with pole setting 18 along outside circumferencial direction, and the quantity of pole setting 18 is a plurality of, and its top is connected jointly and is equipped with roof 19, and position sleeve 15 is the metal construction, and it passes through screw fixed connection in the well head 11 outside, and roof 18 is then welded fastening on position sleeve 15, and roof 19 is also welded fastening on pole setting 18.

Go up roof 19's below and be equipped with well lid 17, the inboard of position sleeve 15 is glued the laminating and is equipped with sealing washer 16, and well lid 17's the outside is all run through by pole setting 18, and well lid 17's bottom external diameter equals the internal diameter of sealing washer 16, as shown in figure 2, well lid 17 covers into well mouth 11 inboard back promptly, can block up well mouth 11 completely, reinforcing shutoff effect.

Go up the equal fixed mounting telescopic cylinder 20 in bottom both sides of roof 19, and go up the centre of a circle position of roof 19 and well lid 17 and all run through and seted up the through-hole, telescopic cylinder 20's the equal vertical downward of piston head end and with the top fixed connection of well lid 17, well lid 17's position is controlled by telescopic cylinder 20 promptly, and the diameter of through-hole is no longer than five centimeters, as shown in fig. 3.

The inside of precipitation well 2 is equipped with cable 10, and the vertical downwardly extending of bottom of cable 10 is connected with water pump 8, and cable 10, outlet pipe 9 and location rope all pass from the through-hole on well lid 17, consequently, even if at the course of the work of pumping groundwater, well lid 17 also is in semi-enclosed state all the time, is convenient for in time shutoff well head 11, as shown in fig. 2.

The working principle is as follows: the utility model discloses in, showy piece 7 floats on the surface of water of groundwater all the time, and its bottom fixed mounting water pump 8, when extracting groundwater, water pump 8 sends groundwater out precipitation well 1 through outlet pipe 9, reaches the purpose that reduces the groundwater level. The top bolt of the floating block 7 is connected with a positioning rope, the top end of the positioning rope is fixed on the bobbin 13, therefore, in the using process, the bobbin 13 is controlled by the servo motor 14 to rotate all the time, the positioning rope is ensured to be in a tightening state all the time, or the floating block 7 is ensured to float on the water surface all the time, the water level height of underground water is judged by the mark on the positioning rope, the operation of construction personnel is facilitated, and the water level is prevented from being excessively reduced. Fixed cup jointing position sleeve 15 in the outside of well head 11, sliding connection well lid 17 on the position sleeve 15, wherein outlet pipe 9, cable 10 and location rope all pass the through-hole on the well lid 7, and when groundwater takes place to gush the phenomenon suddenly, operating personnel can in time start telescopic cylinder 20, utilize the cylinder to cover well lid 17 rapidly in well head 11, compare the conventional art, the shutoff speed of well lid 17 is faster in the utility model, is favorable to reducing the injury that groundwater water level gushes suddenly and causes.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (5)

1. The utility model provides a precipitation well structure for in foundation ditch, includes earth's surface (1), its characterized in that: the water-saving and water-saving device is characterized in that a dewatering well (2) is vertically and downwards arranged on the earth surface (1), a well mouth (11) is arranged at the top end of the dewatering well (2), an installation support (12) is arranged on the outer side of the top of the dewatering well (2), a clay layer (3) is arranged on the upper section in the dewatering well (2), a hollow round pipe (4) is arranged in the middle section in the dewatering well (2), a filter screen (5) is arranged on the inner side of the bottom of the dewatering well (2), a water plugging plug (6) is arranged at the bottom end of the dewatering well (2), a floating block (7) is arranged below the dewatering well (2), a water pump (8) is fixedly installed at the bottom end of the floating block (7), a water outlet pipe (9) is connected to a water outlet of the water pump (8), the top end of the water outlet pipe (9) vertically and upwards penetrates through the well mouth (11) and outwards, the, its top central authorities rotate and connect bobbin (13), its top one side fixed mounting servo motor (14), the winding has the location rope on bobbin (13), and one side fixed cup joint driven gear of bobbin (13), the vertical downwardly extending in bottom of location rope is connected with floating block (7), the output shaft end connection of servo motor (14) is equipped with the driving gear, the driving gear is located driven gear's top, and the meshing sets up between the two.

2. The dewatering well structure for the foundation pit as claimed in claim 1, wherein: the fixed cover in top of well head (11) connects and is equipped with position sleeve (15), the top of position sleeve (15) evenly is equipped with pole setting (18) along outside circumferencial direction, the quantity of pole setting (18) is a plurality of, and its top is connected jointly and is equipped with roof (19).

3. The dewatering well structure for the foundation pit as claimed in claim 2, wherein: go up the below of roof (19) and be equipped with well lid (17), the inboard of position sleeve (15) is spliced the laminating and is equipped with sealing washer (16), the outside of well lid (17) all is run through by pole setting (18), and the bottom external diameter of well lid (17) equals the internal diameter of sealing washer (16).

4. The dewatering well structure for the foundation pit as claimed in claim 2, wherein: go up the equal fixed mounting telescopic cylinder (20) in bottom both sides of roof (19), and go up the centre of a circle position of roof (19) and well lid (17) and all run through and seted up the through-hole, telescopic cylinder (20) the equal vertical downwards of piston head tip and with the top fixed connection of well lid (17).

5. The dewatering well structure for the foundation pit as claimed in claim 1, wherein: the inside of precipitation well (2) is equipped with cable (10), the vertical downwardly extending in bottom of cable (10) is connected with water pump (8), and cable (10), outlet pipe (9) and location rope all pass in the through-hole on well lid (17).

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