CN113047325B

CN113047325B - Drainage structure and drainage method for building foundation pit

Info

Publication number: CN113047325B
Application number: CN202110322656.5A
Authority: CN
Inventors: 林尧; 叶玉明; 陈谏; 张弘辉; 郑光鸿
Original assignee: Haoxiang Fujian Construction Co ltd
Current assignee: Haoxiang Fujian Construction Co ltd
Priority date: 2021-03-26
Filing date: 2021-03-26
Publication date: 2022-04-19
Anticipated expiration: 2041-03-26
Also published as: CN113047325A

Abstract

The utility model relates to a drainage structures and drainage method of building foundation ditch relates to the field of building construction, including the sump pit, be equipped with a dado section of thick bamboo in the sump pit, be equipped with the installation piece on the outer wall of a dado section of thick bamboo, the installation piece is hollow structure, enclose synthetic cavity between the outer wall of installation piece and a dado section of thick bamboo, the installation piece is kept away from to be equipped with the infiltration pipe of extending to the direction of keeping away from a dado section of thick bamboo on one side of a dado section of thick bamboo, infiltration pipe and cavity are linked together, the outer wall of infiltration pipe is porous structure, set up the connecting hole that communicates cavity and dado section of thick bamboo inner chamber on the lower extreme lateral wall of a dado section of thick bamboo, be equipped with the subassembly that draws water in the dado section of thick bamboo. This application has the effect that improves the water efficiency of sump pit.

Description

Drainage structure and drainage method for building foundation pit

Technical Field

The application relates to the field of building construction, in particular to a drainage structure and a drainage method of a building foundation pit.

Background

At present, can all carry out the foundation ditch excavation at the in-process of building construction usually, in the more or high foundation ditch of ground water level of some soil body water content, groundwater can constantly permeate the hole in, causes the influence to construction quality easily. Therefore, in order to ensure the stability of the foundation and the construction quality, the drainage work of the foundation pit needs to be performed.

Referring to fig. 1, in a conventional drainage method, a drainage ditch 101 is dug at the edge of a foundation pit, a collecting well 1 is dug in the drainage ditch 101, a cement pipe is further installed in the collecting well 1 to serve as a well wall supporting structure, groundwater can flow into the collecting well 1 from the bottom of the well during use, and then a water suction pump is placed in the collecting well 1 to discharge the water.

In view of the above-mentioned related art, the inventor believes that in the related art, a cement pipe is generally used as a well wall support structure to reduce the possibility of collapse of the well wall, groundwater can only flow into the water collecting well 1 from the bottom of the well, and the water outlet efficiency is affected.

Disclosure of Invention

In order to improve the play water efficiency of sump pit, this application provides a drainage structures of building foundation ditch.

In a first aspect, the application provides a drainage structure of a building foundation pit, which adopts the following technical scheme:

the utility model provides a drainage structures of building foundation ditch, includes the sump pit, be equipped with a dado section of thick bamboo in the sump pit, be equipped with the installation piece on the outer wall of a dado section of thick bamboo, the installation piece is hollow structure, enclose synthetic cavity between the outer wall of installation piece and a dado section of thick bamboo, the installation piece is kept away from and is equipped with the infiltration pipe that extends to the direction of keeping away from a dado section of thick bamboo on one side of a dado section of thick bamboo, infiltration pipe and cavity are linked together, the outer wall of infiltration pipe is porous structure, set up the connecting hole of intercommunication cavity and dado section of thick bamboo inner chamber on the lower extreme lateral wall of a dado section of thick bamboo, be equipped with the subassembly of drawing water in the dado section of thick bamboo.

By adopting the technical scheme, after the retaining wall cylinder is arranged in the water collecting well, one side of the mounting block, which is far away from the retaining wall cylinder, is attached to the inner wall of the water collecting well, so that the inner wall of the water collecting well can be supported to prevent collapse, the water seepage pipe is inserted into the inner wall of the water collecting well, so that underground water can enter the cavity through the water seepage pipe and flow into the retaining wall cylinder from the communication hole, the underground water can also flow into the retaining wall cylinder from the bottom of the water collecting well, and then the water in the retaining wall cylinder is pumped out through the water pumping group price to drain water; the water on the side wall and the bottom of the water collecting well can flow into the wall protecting cylinder, so that the water outlet efficiency is improved.

Optionally, the water pumping assembly comprises a central cylinder arranged at the bottom of the water collecting well, the outer wall of the central cylinder is rotatably connected with a rotating cylinder, the side wall of the central cylinder is evenly provided with water passing holes along the circumferential direction of the central cylinder, the side wall of the rotating cylinder is provided with abdicating holes which can be superposed with the water passing holes, the water pumping component also comprises a vacuum water pump arranged in the hollow cylinder, the upper end surface of the central cylinder is provided with a round hole, a plurality of circular holes are uniformly arranged along the circumferential direction of the central cylinder, the upper end surface of the rotating cylinder is provided with air suction holes which can be superposed with the circular holes, when the abdicating hole is superposed with the water passing hole, the air suction hole and the round hole are staggered with each other, when the air suction hole and the round hole are superposed with each other, the water holes and the abdicating holes are staggered, an air suction pipe is arranged between the upper end of the rotating cylinder and the cavity, and a driving assembly for driving the rotating cylinder to rotate at intervals is arranged in the wall protecting cylinder.

Through adopting above-mentioned technical scheme, vacuum pump is the dual-purpose water pump of aqueous vapor, can draw water under the condition of having water, can carry out the evacuation under the anhydrous condition, and when the hole of stepping down of water hole and the section of thick bamboo of crossing on the section of thick bamboo of center coincided, round hole and suction hole stagger each other, and hydroenergy can enter into a section of thick bamboo of center to take away through vacuum pump. When the driving assembly drives the rotating cylinder to rotate, the abdicating holes and the water passing holes are staggered, the air suction holes and the round holes are superposed with each other, so that the vacuum pump generates negative pressure in the central cylinder, and the air suction pipe is arranged between the upper end of the rotating cylinder and the cavity, so that negative pressure can be generated in the cavity, the rate of groundwater flowing into the cavity from the seepage pipe is increased, and the drainage efficiency is improved; the driving assembly drives the rotating cylinder to rotate at intervals, so that pumping is performed at intervals, and water pumping is not influenced while the water outlet efficiency is improved.

Optionally, the breathing pipe includes the supporting shoe and the level pipe that evenly sets up along the lateral wall of supporting shoe, the level pipe evenly sets up and the quantity and the round hole one-to-one of level pipe along the circumference of supporting shoe, the one end that the supporting shoe was kept away from to the level pipe is connected in the upper end inner wall of a protecting wall section of thick bamboo and is linked together with the cavity, the breathing pipe still includes and is connected with the level pipe and the vertical pipe of butt on the section of thick bamboo up end rotates, vertical pipe and the coaxial setting of adjacent suction opening.

Through adopting above-mentioned technical scheme, vertical pipe and round hole are coaxial, and when the rotary drum rotated to suction hole and round hole coincidence, vertical pipe was linked together with the central cylinder promptly, and vacuum pump during operation can produce the negative pressure in the cavity through vertical pipe, horizontal pipe promptly, promotes during groundwater inflow infiltration pipe.

Optionally, the driving assembly includes a driving rod rotatably connected to the supporting block, the driving rod is of an internal hollow structure, the lower end of the driving rod is connected to the upper end face of the rotating cylinder, a through hole coaxial with the driving rod is formed in the upper end of the center cylinder, the driving assembly further includes a worm wheel coaxially arranged on the outer wall of the upper end of the driving rod, a worm engaged with the worm wheel is rotatably connected to the supporting block, the driving assembly further includes a driving motor for driving the worm to rotate, and the driving motor is connected with a timer for controlling the driving motor to rotate at intervals.

Through adopting above-mentioned technical scheme, make driving motor interval rotate under the effect of timer, drive the actuating lever through the meshing of worm wheel and rotate convenient to use.

Optionally, be equipped with the separation block in the cavity, the separation block separates into water storage chamber and drainage chamber with the cavity, the horizontal pipe communicates in water storage chamber just infiltration pipe connects in water storage chamber, the connecting hole is located the lateral wall in drainage chamber, set up the hole of opening and close of intercommunication water storage chamber and drainage chamber on the separation block, it is equipped with the piece that opens and close that is used for hiding the hole of opening and closing to open the hole, open and close and be equipped with the horizontal pole on the upper end inner wall of hole, open and close the piece including the first spring of locating horizontal pole lower extreme, open and close still including locating the connection ball of first spring lower extreme, connect the ball butt in the lower extreme of opening and closing the hole.

Through adopting above-mentioned technical scheme, top-down's water storage chamber and drainage chamber are separated into with the cavity to the separation piece, and the water collection of infiltration pipe is in the water storage intracavity to when a section of thick bamboo is inherent to produce the negative pressure in the center, the water level top in water storage chamber can be in order to produce the negative pressure, and the effect of negative pressure is more obvious, and water is to the effect increase of connecting the ball when the water yield in water storage chamber increases, makes to connect ball downstream, and water can flow to the drainage intracavity from connecting the ball and opening and close the clearance between the hole.

Optionally, a plurality of holding tanks are provided on the upper surface of the barrier block, filter fillers are provided in the holding tanks, and the bottom surfaces of the holding tanks are of a porous structure.

Through adopting above-mentioned technical scheme, the water of retaining intracavity can be through filtering the filler infiltration and flow to the drainage intracavity, and vacuum pump is drawing water the in-process, and the water level decline in the sump pit drives the water level decline in the drainage intracavity, can produce the negative pressure in the drainage intracavity for the water of retaining intracavity is inhaled downwards, thereby promotes the rivers income drainage chamber of retaining intracavity.

Optionally, sliding connection has a sealing cylinder about the lower extreme of vertical pipe, the lower extreme of vertical pipe is equipped with and is used for driving the sealing cylinder to contradict in the elastic component who rotates a section of thick bamboo terminal surface, it is protruding that the location is located to the lower extreme outer wall of vertical pipe, the elastic component is located vertical outer of tubes wall and upper end fixed connection in the second spring of the protruding lower surface in location including the cover, the lower extreme of second spring is connected in sealing cylinder upper end, the annular has been seted up in the sealing cylinder, it is protruding that the ring that can slide from top to bottom in the annular is seted up to vertical outer of tubes wall, the protruding upper surface of ring is equipped with the sealing washer.

Through adopting above-mentioned technical scheme, can drive sealed section of thick bamboo lower extreme under the effect of second spring and support tightly in the upper surface of rotating a section of thick bamboo to improve the leakproofness between a section of thick bamboo and the vertical pipe of rotating, improve the effect that produces the negative pressure in the retaining intracavity.

Optionally, the lower end surface of the sealing cylinder is set to be of a structure with a large upper end and a small lower end, and the upper end of the air suction hole is set to be of a structure matched with the lower end of the sealing cylinder.

By adopting the technical scheme, the sealing property between the sealing cylinder and the rotating cylinder is further improved.

In a second aspect, the present application provides a drainage method using a drainage structure of a building foundation pit, which adopts the following technical scheme:

a drainage method of a drainage structure of a building foundation pit comprises the following steps,

s1, digging a water collecting well in the foundation pit, and putting the retaining wall cylinder into the water collecting well;

s2, driving the water seepage pipe into the side wall of the water collecting well, installing the central cylinder and the rotating cylinder on the bottom surface of the water collecting well, and connecting the driving rod with the rotating cylinder;

and S3, installing a driving motor for controlling the rotation of the driving rod and starting the vacuum water pump.

By adopting the scheme, the underground water in the water collecting well can be discharged, and the operation is convenient

In summary, the present application includes at least one of the following beneficial technical effects:

1. the underground water can enter the water collecting well from the side wall and the bottom, the water outlet efficiency is good, the vacuum pump can drain the water, and the vacuum pump can generate negative pressure in the cavity, so that the underground water can flow into the water seepage pipe more easily;

2. thereby driving motor rotates at interval under the effect of timer and drives the actuating lever and rotate, can make interval ground produce the negative pressure in the cavity, and the water level decline of vacuum pump drainage cavity when drawing water also can promote the water in retaining chamber to flow into the drainage intracavity through filtering the filler.

Drawings

Fig. 1 is a schematic structural view of the related art;

FIG. 2 is a schematic structural diagram of an embodiment of the present application;

FIG. 3 is a schematic view of the internal structure of a retaining wall casing according to an embodiment of the present application;

FIG. 4 is a schematic structural view of a water pumping assembly according to an embodiment of the present disclosure;

FIG. 5 is an enlarged schematic view at A in FIG. 3;

FIG. 6 is a schematic view of the connection structure of the sealing cartridge according to the embodiment of the present application;

FIG. 7 is an enlarged schematic view at B in FIG. 6;

fig. 8 is a schematic structural view of the closure according to the embodiment of the present application.

Description of reference numerals: 101. a drainage ditch; 1. a water collecting well; 2. a wall protecting cylinder; 3. mounting blocks; 4. a cavity; 5. a water seepage pipe; 6. a support block; 7. connecting holes; 8. a water pumping assembly; 81. a central barrel; 82. a rotating cylinder; 83. a vacuum water pump; 9. water passing holes; 10. a hole of abdication; 11. a circular hole; 12. a suction hole; 13. an air intake duct; 131. a horizontal tube; 132. a vertical tube; 14. a drive assembly; 141. a drive rod; 142. a worm gear; 143. a worm; 144. a drive motor; 15. perforating holes; 16. a barrier block; 17. a water storage cavity; 18. a drainage cavity; 19. an opening and closing member; 191. a first spring; 192. a connecting ball; 193. opening and closing the hole; 20. a cross bar; 21. accommodating grooves; 22. filtering the filler; 23. a sealing cylinder; 24. positioning protrusions; 25. a second spring; 26. a ring groove; 27. the ring is convex.

Detailed Description

The present application is described in further detail below with reference to figures 2-8.

Example 1: the embodiment of the application discloses drainage structures of building foundation ditch. Referring to fig. 1, the drainage structure of the construction pit includes a sump 1 provided in the pit, and the uppermost end of the sump 1 is flush with the bottom surface of a drainage ditch in the pit, so that water in the drainage ditch 101 can also flow into the sump 1. The drainage structure also comprises a retaining wall cylinder 2 arranged in the water collecting well 1, the cross section of the water collecting well 1 is of a square structure, and the cross section of the retaining wall cylinder 2 is also of a square structure.

Referring to fig. 2, the mounting blocks 3 are fixed to the outer walls of the four peripheral sides of the retaining wall cylinder 2, the mounting blocks 3 are hollow, and a cavity 4 is formed between the mounting blocks 3 and the side wall of the retaining wall cylinder 2 after the mounting blocks 3 are mounted on the retaining wall cylinder 2. When the wall protection cylinder 2 is installed in the water collecting well 1, one side of the installation block 3 far away from the wall protection cylinder 2 can be attached to the inner wall of the water collecting well 1 so as to prevent collapse of the inner wall of the water collecting well 1. The installation piece 3 is kept away from on one side of a wall protecting section of thick bamboo 2 and is pegged graft and have oozing water pipe 5, evenly seted up trompil and oozing water pipe 5 on the lateral wall of oozing water pipe 5 and extend and insert in the soil layer of the inner wall of sump pit 1 to the direction of keeping away from a wall protecting section of thick bamboo 2. The detachable plate can be installed on the inner wall of the wall protection cylinder 2, and the water seepage pipe 5 is conveniently inserted into the soil layer. Water in the soil layer can flow into the cavity 4 through the water seepage pipe 5, the inner wall of the lower end of the retaining wall cylinder 2 is provided with a connecting hole 7 penetrating through the cavity 4, and the water in the cavity 4 can enter the retaining wall cylinder 2. The water on the side wall of the water collecting well 1 and the water on the bottom can both flow into the retaining wall cylinder 2, and the water pumping assembly 8 is installed in the retaining wall cylinder 2 and can pump the water flowing into the retaining wall cylinder 2 away for drainage.

Referring to fig. 3 and 4, the water pumping assembly 8 includes a central cylinder 81 installed at the bottom of the water collecting well 1, wherein filtering materials such as gravel and pebble are firstly paved at the bottom of the water collecting well 1, a concrete seat is poured at the bottom of the water collecting well 1 or the concrete seat is directly placed at the bottom of the water collecting well 1 for installing the central cylinder 81, and a rotating cylinder 82 is further rotatably connected to the outer wall of the central cylinder 81. The lateral wall of a center section of thick bamboo 81 is seted up on and is seted up the water hole 9 of crossing through the inner chamber of a center section of thick bamboo 81, and the water hole 9 of crossing evenly is provided with the multiunit along the circumference of a center section of thick bamboo 81, and the water hole 9 of crossing sets up four groups in this embodiment, is in being a set of same vertical line. Four groups of yielding holes 10 are uniformly formed in the outer wall of the rotating cylinder 82 along the circumferential direction of the rotating cylinder 82, the quantity of the yielding holes 10 is the same as that of the water passing holes 9, and when the rotating cylinder 82 rotates, the yielding holes 10 can coincide with the water passing holes 9, so that water in the wall protecting cylinder 2 can enter the center cylinder 81. The water pumping assembly 8 further comprises a vacuum water pump 83 installed inside the central cylinder 81, and the vacuum water pump 83 is a water-air dual-purpose water pump and can be used for pumping air and also pumping water.

Referring to fig. 3 and 4, the upper end surface of the central cylinder 81 is provided with four circular holes 11, and the circular holes 11 are uniformly arranged along the circumferential direction of the central cylinder 81, in this embodiment, the circular holes 11 are provided with four circular holes. The upper end surface of the rotating cylinder 82 is provided with air suction holes 12 which can be overlapped with the round holes 11, the number of the air suction holes 12 corresponds to that of the round holes 11 one by one, and the air suction holes 12 can be overlapped with the round holes 11. When the abdicating hole 10 and the water passing hole 9 are coincident, the circular hole 11 and the air suction hole 12 are staggered with each other, and when the circular hole 11 and the air suction hole 12 are coincident with each other, the abdicating hole 10 and the water passing hole 9 are staggered with each other. The wall protection cylinder 2 is internally provided with a driving assembly 14 for driving the rotating cylinder 82 to rotate, and the air suction pipe 13 is connected between the upper end of the rotating cylinder 82 and the upper end of the cavity 4, so that when the air suction hole 12 and the round hole 11 are overlapped with each other, the vacuum water pump 83 sucks air in the central cylinder 81, negative pressure can be generated in the cavity 4, and the groundwater is promoted to flow into the infiltration pipe 5. And when the abdicating hole 10 and the water through hole 9 are superposed and the water in the retaining wall cylinder 2 can enter the central cylinder 81, the water is pumped. Further, hole 10 and the water hole 9 of stepping down are the slope setting, and for upwards setting up to the axis direction slope of a central section of thick bamboo 81, can reduce the possibility of hole 10 and the water hole 9 jam of stepping down to when rotating a section of thick bamboo 82 and a central section of thick bamboo 81 relative rotation, can cut off the hole 10 of stepping down and the mud of crossing the interior accumulation of water hole 9, more conveniently step down the hole 10 and cross the silt in the water hole 9 and follow downthehole discharge.

Referring to fig. 3 and 5, the air suction pipe 13 includes a supporting block 6, and further includes horizontal pipes 131 evenly arranged along the side walls of the supporting block 6, the number of the horizontal pipes 131 is evenly arranged along the circumferential direction of the supporting block 6, one end of the horizontal pipe 131 far away from the supporting block 6 is connected to the inner wall of the wall protection cylinder 2, the horizontal pipe 131 is of a hollow structure, the horizontal pipe 131 is communicated with the cavity 4, and the connecting position of the horizontal pipe 131 and the cavity 4 is higher than the height of the water seepage pipe 5. The air suction pipe 13 further comprises a vertical pipe 132 connected to the horizontal pipe 131, a lower end of the vertical pipe 132 can abut against an upper end surface of the rotary cylinder 82, and the vertical pipe 132 and the circular hole 11 are on the same axis, and when the rotary cylinder 82 rotates to a position where the air suction hole 12 and the circular hole 11 coincide, the vertical pipe 132 can communicate with the inner cavity of the central cylinder 81. The vertical tube 132 is also hollow and forms a passage with the horizontal tube 131 connecting the cavity 4 and the central cylinder 81. When the vacuum pump 83 operates in the central cylinder 81, air can be sucked into the central cylinder 81, and a negative pressure is generated in the cavity 4.

Referring to fig. 3 and 5, the driving assembly 14 includes a driving lever 141 rotatably coupled to the support block 6, the driving lever 141 being vertically disposed and the driving lever 141 and the rotary cylinder 82 being coaxially disposed. The driving rod 141 can be rotatably connected to the supporting block 6 by means of a bearing, the driving rod 141 is fixed to an inner ring of the bearing by means of welding or the like, and an outer ring of the bearing is fixedly connected to the supporting block 6. The driving rod 141 is of an internal hollow structure, the lower end of the driving rod 141 is fixedly connected with the upper end face of the rotating cylinder 82, and the driving rod 141 can drive the rotating cylinder 82 to rotate by rotating. The driving assembly 14 includes a worm wheel 142 coaxially and fixedly connected to the outer wall of the upper end of the driving rod 141, and a worm 143 is further rotatably connected to the supporting block, and the worm 143 and the worm wheel 142 are engaged with each other. The driving assembly 14 further comprises a driving motor 144 for driving the worm 143 to rotate, and an output shaft of the driving motor 144 is fixedly connected with the worm 143. The driving motor 144 is further connected to a timer (not shown in the figure), and the driving motor 144 is intermittently started under the action of the timer, so that the driving rod 141 drives the rotating cylinder 82 to rotate intermittently. Referring to fig. 4, when the receding hole 10 and the water passing hole 9 coincide with each other, the circular hole 11 and the air suction hole 12 are staggered with each other, and at this time, the vacuum pump 83 pumps water; when the rotation is performed once again, the abdicating hole 10 and the water through hole 9 are staggered, the round hole 11 and the air suction hole 12 are overlapped, air is sucked at the moment, negative pressure can be generated in the cavity 4, and the operation is repeated. Further, the driving rod 141 may have a hollow structure, a through hole 15 for passing the water supply pipe is formed in the center tube 81, and an electric wire and a water pipe connected to the vacuum pump 83 may pass through the driving rod 141.

Referring to fig. 6 and 7, further, a sealing cylinder 23 is slidably connected to a lower end side wall of the vertical tube 132, and an elastic member for driving the sealing cylinder 23 to abut on an upper surface of the rotating cylinder 82 is installed at a lower end of the vertical tube 132. The outer wall of the lower end of the vertical pipe is fixed with a positioning protrusion 24, the elastic element comprises a second spring 25 sleeved on the outer wall of the vertical pipe 132, the upper end of the second spring 25 is fixedly connected to the lower surface of the positioning protrusion 24, and the lower end of the second spring 25 is connected to the upper end surface of the sealing barrel 23. The side wall of the vertical pipe 132 is further fixed with a ring protrusion 27, a ring groove 26 for allowing the ring protrusion 27 to slide up and down is formed in the sealing cylinder 23, when the lower end of the sealing cylinder 23 abuts against the end face of the rotating cylinder 82, the upper surface of the ring protrusion 27 can abut against the inner upper wall of the ring groove 26, and a sealing ring is bonded on the ring protrusion 27. The sealing cylinder 23 can be of a half-and-half spliced structure, and is convenient to install. Furthermore, the lower end surface of the sealing cylinder 23 can be of a structure with a large upper part and a small lower part, and the upper end of the air suction hole 12 is of a structure matched with the lower end of the sealing cylinder 23, so that the contact area is increased, and the sealing performance is improved.

Referring to fig. 3 and 8, the four cavities 4 are all provided with the blocking blocks 16, the cavities 4 are divided into the water storage cavity 17 and the water drainage cavity 18 by the blocking blocks 16, the water storage cavity 17 is positioned above the water drainage cavity 18, the horizontal pipe 131 and the water seepage pipe 5 are both connected to the side wall of the water storage cavity 17, and the connecting hole 7 is formed in the side wall of the water drainage cavity 18. The barrier block 16 is provided with an opening and closing member 19 for communicating the reservoir chamber 17 with the drain chamber 18 so that water in the reservoir chamber 17 can flow into the drain chamber 18 to a certain extent upon accumulation. An opening and closing hole 193 is formed in the blocking block 16, the opening and closing hole 193 penetrates through the upper side and the lower side of the blocking block 16, and a cross rod 20 is fixed on the inner wall of the upper end of the opening and closing hole 193. The opening and closing member 19 comprises a first spring 191 fixedly connected to the lower surface of the cross bar 20, the opening and closing member 19 further comprises a connecting ball 192 connected to the lower end of the first spring 191, the connecting ball 192 can be made of plastic and the like, the first spring 191 is in a slightly stretched state, the connecting ball 192 abuts against the lower end of the opening and closing hole 193 under the action of the first spring 191, and when the water amount in the water storage cavity 17 is increased, water acts on the connecting ball 192, so that the water can flow into the drainage cavity 18. The open and closed holes 193 may be uniformly installed in two along the length direction of the barrier block 16.

Further, still seted up a plurality of holding tanks 21 on the separation piece 16, holding tank 21 evenly sets up along the length direction of separation piece 16. The blocking block 16 is filled with a filter filler 22 such as gravel, the lower end of the accommodating groove 21 is of a porous structure, and water in the impoundment cavity 17 can permeate into the drainage cavity 18 through the accommodating groove 21.

The implementation principle of the drainage structure of the building foundation pit is as follows: groundwater can get into retaining chamber 17 from infiltration pipe 5, then ooze drainage chamber 18 under filtering filler 22, groundwater also can get into the bulkhead section of thick bamboo 2 from the 1 bottom of sump pit, vacuum pump 83 is at the during operation, when crossing the water hole 9 and stepping down the hole 10 coincidence, vacuum pump 83 draws water the work, actuating lever 141 rotates, make and cross the water hole 9 and stepping down the hole 10 dislocation, suction hole 12 and round hole 11 coincide mutually, vacuum pump 83 bleeds, produce the negative pressure in the retaining chamber 17, promote groundwater to flow into in the retaining chamber 17 from infiltration pipe 5.

Example 2:

the embodiment of the application discloses a drainage method of a drainage structure of a building foundation pit, which comprises the following steps:

s1, excavating a water collecting well 1 in the foundation pit, wherein the water collecting well 1 is larger than the wall protecting cylinder 2, putting the wall protecting cylinder 2 into the water collecting well 1, and abutting one side, far away from the wall protecting cylinder 2, of the mounting block 3 against the side wall of the water collecting well 1;

s2, driving the water seepage pipe 5 into the side wall of the water collecting well 1, installing the central cylinder 81 and the rotating cylinder 82 on the bottom surface of the water collecting well 1, connecting the driving rod 141 and the rotating cylinder 82, and adjusting a timer to enable the driving motor 144 to drive the driving rod 141 to rotate at intervals;

s3, the vacuum water pump 83 is then started so that the vacuum water pump 83 is in operation.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a drainage structures of building foundation ditch, includes sump pit (1), its characterized in that: a wall protection cylinder (2) is arranged in the water collecting well (1), an installation block (3) is arranged on the outer wall of the wall protection cylinder (2), the installation block (3) is of a hollow structure, a cavity (4) is enclosed between the installation block (3) and the outer wall of the wall protection cylinder (2), a water seepage pipe (5) extending in the direction away from the wall protection cylinder (2) is arranged on one side, away from the wall protection cylinder (2), of the installation block (3), the water seepage pipe (5) is communicated with the cavity (4), the outer wall of the water seepage pipe (5) is of a porous structure, a connecting hole (7) communicating the cavity (4) with the inner cavity of the wall protection cylinder (2) is formed in the side wall of the lower end of the wall protection cylinder (2), and a water pumping assembly (8) is arranged in the wall protection cylinder (2);

the water pumping assembly (8) comprises a center barrel (81) arranged at the bottom of the water collecting well (1), the outer wall of the center barrel (81) is rotatably connected with a rotating barrel (82), water passing holes (9) are uniformly formed in the side wall of the center barrel (81) along the circumferential direction of the center barrel (81), yielding holes (10) capable of being coincided with the water passing holes (9) are formed in the side wall of the rotating barrel (82), the water pumping assembly (8) further comprises a vacuum water pump (83) arranged in the hollow barrel, a round hole (11) is formed in the upper end face of the center barrel (81), a plurality of round holes (11) are uniformly formed in the round hole (11) along the circumferential direction of the center barrel (81), a suction hole (12) capable of being coincided with the round hole (11) is formed in the upper end face of the rotating barrel (82), when the yielding holes (10) are coincided with the water passing holes (9), the suction hole (12) and the round hole (11) are staggered, when the air suction holes (12) and the round holes (11) are mutually overlapped, the water passing holes (9) and the abdicating holes (10) are mutually staggered, an air suction pipe (13) is arranged between the upper end of the rotating cylinder (82) and the cavity (4), and a driving assembly (14) for driving the rotating cylinder (82) to rotate at intervals is arranged in the wall protecting cylinder (2).

2. The drainage structure of a construction pit according to claim 1, wherein: breathing pipe (13) include the supporting shoe and along horizontal pipe (131) that the lateral wall of supporting shoe evenly set up, horizontal pipe (131) evenly set up and the quantity and round hole (11) one-to-one of horizontal pipe (131) along the circumference of supporting shoe, the one end that the supporting shoe was kept away from in horizontal pipe (131) is connected in the upper end inner wall of a protecting wall section of thick bamboo (2) and is linked together with cavity (4), breathing pipe (13) still include with horizontal pipe (131) be connected and butt vertical pipe (132) on a section of thick bamboo (82) up end rotates, vertical pipe (132) and adjacent suction opening (12) coaxial setting.

3. The drainage structure of a construction pit according to claim 2, wherein: the driving assembly (14) comprises a driving rod (141) which is rotatably connected onto a supporting block, the driving rod (141) is of an internal hollow structure, the lower end of the driving rod (141) is connected to the upper end face of the rotating cylinder (82), a through hole (15) which is coaxial with the driving rod (141) is formed in the upper end of the center cylinder (81), the driving assembly (14) further comprises a worm wheel (142) which is coaxially arranged on the outer wall of the upper end of the driving rod (141), a worm (143) which is meshed with the worm wheel (142) is rotatably connected onto the supporting block, the driving assembly (14) further comprises a driving motor (144) which is used for driving the worm (143) to rotate, and the driving motor (144) is connected with a timer which is used for controlling the driving motor (144) to rotate at intervals.

4. The drainage structure of a construction pit according to claim 2, wherein: a blocking block (16) is arranged in the cavity (4), the blocking block (16) divides the cavity (4) into a water storage cavity (17) and a water drainage cavity (18), the horizontal pipe (131) is communicated with the water storage cavity (17) and the water seepage pipe (5) is connected with the water storage cavity (17), the connecting hole (7) is positioned on the side wall of the drainage cavity (18), the separation block (16) is provided with an opening and closing hole (193) for communicating the water storage cavity (17) with the drainage cavity (18), the opening and closing hole (193) is provided with an opening and closing piece (19) used for covering the opening and closing hole (193), a cross bar (20) is arranged on the inner wall of the upper end of the opening and closing hole (193), the opening and closing piece (19) comprises a first spring (191) arranged on the lower end surface of the cross bar (20), the opening and closing piece (19) further comprises a connecting ball (192) arranged at the lower end of the first spring (191), and the connecting ball (192) abuts against the lower end of the opening and closing hole (193).

5. The drainage structure of a construction pit according to claim 4, wherein: a plurality of holding tanks (21) have been seted up to the upper surface of separation block (16), be provided with in holding tank (21) and filter filler (22), the bottom surface of holding tank (21) is porous structure.

6. The drainage structure of a construction pit according to claim 4, wherein: sliding connection has sealed section of thick bamboo (23) about the lower extreme of vertical pipe (132), the lower extreme of vertical pipe (132) is equipped with and is used for driving sealed section of thick bamboo (23) to contradict in the elastic component of rotating a section of thick bamboo (82) terminal surface, the protruding (24) in location are located to the lower extreme outer wall of vertical pipe (132), the elastic component is located vertical pipe (132) outer wall and upper end fixed connection in second spring (25) of the protruding (24) lower surface in location including the cover, the lower extreme of second spring (25) is connected in sealed section of thick bamboo (23) upper end, annular (26) have been seted up in sealed section of thick bamboo (23), vertical pipe (132) outer wall is seted up and is can be in annular (26) gliding ring protruding (27) from top to bottom, the upper surface of ring protruding (27) is equipped with the sealing washer.

7. The drainage structure of a construction pit according to claim 6, wherein: the lower end face of the sealing cylinder (23) is of a structure with a large upper part and a small lower part, and the upper end of the air suction hole (12) is of a structure matched with the lower end of the sealing cylinder (23).

8. A drainage method using the drainage structure for construction pit according to any one of claims 1 to 7, characterized in that: comprises the following steps of (a) carrying out,

s1, digging a water collecting well (1) in the foundation pit, and putting the wall protecting cylinder (2) into the water collecting well (1);

s2, driving the water seepage pipe (5) into the side wall of the water collecting well (1), installing the central cylinder (81) and the rotating cylinder (82) on the bottom surface of the water collecting well (1), and connecting the driving rod (141) and the rotating cylinder (82);

and S3, installing a driving motor (144) for controlling the rotation of the driving rod (141) and starting the vacuum water pump (83).