CN112663645B

CN112663645B - Foundation pit construction drainage system

Info

Publication number: CN112663645B
Application number: CN202110091716.7A
Authority: CN
Inventors: 陈宇; 邢仲星; 刘晓辉; 鲍岩
Original assignee: Beijing Tengyuxiang Construction Engineering Co ltd
Current assignee: Beijing Tengyuxiang Construction Engineering Co ltd
Priority date: 2021-01-23
Filing date: 2021-01-23
Publication date: 2022-01-11
Anticipated expiration: 2041-01-23
Also published as: CN112663645A

Abstract

The utility model relates to a foundation ditch construction drainage system relates to the field of foundation ditch drainage, including filtering component and water pump, filtering component includes the mount pad, and the water pump is installed in the mount pad, installs first filter screen on the outlying mount pad of water pump, and the periphery of water pump is located to first filter screen cover, still installs the second filter screen on the mount pad, and the periphery of first filter screen is located to second filter screen cover. This application has the advantage that can reduce silt and to the influence of water pump.

Description

Foundation pit construction drainage system

Technical Field

The application relates to the field of foundation pit drainage, in particular to a foundation pit construction drainage system.

Background

The foundation pit refers to a soil pit excavated at a foundation related position according to the elevation and the plane size of the foundation, namely a foundation space below the ground excavated for the construction of a building foundation and a basement. In order to guarantee the security of foundation ditch at the in-process of foundation ditch construction, and the smoothness of construction in the foundation ditch, the problem of drainage is considered in the foundation ditch construction, among the correlation technique, the drainage of foundation ditch is mainly dug in the foundation ditch and is established escape canal and collecting pit, the inner wall along the foundation ditch of escape canal is laid, the escape canal is discharged the infiltration in the foundation ditch or the rainwater of raining into the collecting pit, be provided with the water pump in the collecting pit, the water pump will be collected the water pump in the pond and send to outside the foundation ditch.

To the correlation technique among the above, the inventor finds that because the drainage ditch discharges into the aquatic in collecting the pond often can smuggle more silt secretly, and these silt can influence the drainage performance of water pump.

Disclosure of Invention

In order to improve the influence of silt to the water pump in the collecting tank, this application provides a foundation ditch construction drainage system.

The application provides a foundation ditch construction drainage system adopts following technical scheme:

the utility model provides a foundation ditch construction drainage system, includes filtering component and water pump, and filtering component includes the mount pad, and the water pump is installed in the mount pad, installs first filter screen on the peripheral mount pad of water pump, and the periphery of water pump is located to first filter screen cover, still installs the second filter screen on the mount pad, and the periphery of first filter screen is located to second filter screen cover.

Through adopting above-mentioned technical scheme, the water pump is when the water in the pond is collected in the extraction, and first filter screen can carry out primary filter to the water that enters into in the water pump, and later the second filter screen can carry out secondary filter to the water that enters into in the water pump, and the water that enters into in the water pump in the time of like this is cleaner to reduce the influence of aquatic silt to the water pump.

Optionally, the floating device further comprises a buoyancy member for floating the mounting seat on the water surface.

Through adopting above-mentioned technical scheme, under the effect of buoyancy spare, the mount pad floats in the surface of water, can make the water pump extract comparatively clear water in collecting basin like this.

Optionally, the device also comprises a guide assembly, and under the action of the guide assembly, the mounting seat can only lift along with the liquid level in the collecting tank.

Through adopting above-mentioned technical scheme, make water pump, filter assembly, buoyancy piece can only go up and down along with the liquid level height in the collecting tank, and can not float everywhere in the collecting tank.

Optionally, the guide assembly comprises a support, a connecting rod and a guide rod, the support can be detachably fixed on the ground on the periphery of the collecting tank, the connecting rod is installed on the support, a mounting hole with a vertical setting is formed in the connecting rod, the guide rod is connected to the connecting rod in a sliding mode through the mounting hole, a jacking bolt used for jacking the guide rod is arranged on the connecting rod in a penetrating mode, the mounting seat comprises a connecting pipe matched with the guide rod for use, the guide rod penetrates through the mounting hole and then penetrates through the connecting pipe, and the guide rod and the connecting pipe are connected in a sliding mode.

Through adopting above-mentioned technical scheme, the connecting pipe on the guide bar passed the mount pad to make the mount pad can only slide along the guide bar, and then make the mount pad can only follow the length direction of guide bar and go up and down along with the liquid level in the collecting tank.

Optionally, a horizontally arranged connecting hole is formed in the support, and the connecting rod is connected to the support in a sliding manner through the connecting hole.

Through adopting above-mentioned technical scheme, the staff can adjust the position of water pump in the collecting tank through making the connecting rod slide on the support.

Optionally, a fixing assembly for temporarily fixing the mounting seat is arranged on the connecting rod.

Through adopting above-mentioned technical scheme, fixed subassembly can be fixed in the connecting rod with the mount pad temporarily to make the staff more convenient when making the guide bar pass mounting hole and connecting pipe.

Optionally, the fixing assembly includes a fixing seat and a fixing member, the fixing seat is fixedly connected to the mounting seat, and a side wall of the fixing seat is provided with an insertion hole; the mounting includes the dead lever, and the top rigid coupling of dead lever is provided with the slide parallel with the spliced eye in the bottom of dead lever in the connecting rod, and the slide internal slipping is connected with the spliced pole that uses with the spliced eye cooperation, and when the spliced pole inserted in the spliced eye, the mount pad was fixed in the connecting rod temporarily, and the connecting pipe in the mount pad is aligned with the mounting hole of connecting rod.

Through adopting above-mentioned technical scheme, when the spliced pole inserted in the spliced eye, the connecting pipe was aligned with the mounting hole, and the staff more conveniently passed mounting hole and connecting pipe with the guide bar this moment.

Optionally, a wire take-up roller is mounted on the support, a pull rope is wound on the wire take-up roller, and the pull rope is connected with the mounting seat.

Through adopting above-mentioned technical scheme, after the staff relieved fixed subassembly to the restriction of mount pad, the staff can make the mount pad follow the slow decline of guide bar through the stay cord to the impact that produces when making the in-process that descends and surface of water contact is littleer, thereby reduces the influence to the water pump.

Optionally, the first jack that communicates with the spliced eye is seted up to the upper surface of fixing base, has seted up the second jack on the inserted link, sets up to reset spring between inserted link and the dead lever, and the rigid coupling has the plug connector on the stay cord simultaneously, and the plug connector includes the inserted link, and the inserted link passes first jack and second jack, and the rigid coupling has the pole setting on the mount pad, sets up the spout parallel with first jack on the lateral wall of pole setting, and the rigid coupling has the slider on the plug connector, and the slider slides and connects in the spout.

Through adopting above-mentioned technical scheme, when the staff is removing the restriction of fixed subassembly to the mount pad, only need upwards stimulate the plug connector through the stay cord, make the plug connector break away from the second jack on the inserted bar, the inserted bar breaks away from the spliced eye under reset spring's effect this moment, the mount pad has just lost the restriction of fixed subassembly like this, later the mount pad slides down along the guide bar, at the mount pad along the guide bar in-process that slides down, the staff still can pass through the stay cord, the plug connector, the cooperation of slider and pole setting, slide along the guide bar is controlled the mount pad.

Optionally, the plug connector still includes the connecting plate of rigid coupling in inserted bar top, and the rigid coupling has a plurality of globular and elastic joint pieces that are rich on the lower surface of connecting plate, and a plurality of joint grooves have been seted up to the fixing base upper surface that corresponds, a plurality of joint pieces and a plurality of joint groove one-to-one.

Through adopting above-mentioned technical scheme, when the lower surface of connecting plate pasted mutually with the upper surface of fixing base, joint piece joint in the joint inslot, on the plug connector can be fixed in the fixing base temporarily like this, when people in the mobile connection pole, the plug connector is difficult to break away from the fixing base.

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

1. the first filter screen and the second filter screen are arranged on the periphery of the water pump, so that water entering the water pump can be filtered twice by the first filter screen and the second filter screen, and the influence of silt in the collecting tank on the water pump is reduced;

2. the installation seat is provided with the buoyancy piece, so that the water pump can pump water at the position of the water surface in the collection tank, and the water quality pumped by the water pump is cleaner;

3. through setting up the direction subassembly, the direction subassembly can make water pump, filter assembly, buoyancy can only go up and down along with the liquid level height in the collecting tank, and can not float everywhere in the collecting tank.

Drawings

FIG. 1 is a schematic view showing a connection structure between a water pump and a filter assembly in an embodiment of the present application.

Fig. 2 is a schematic structural diagram of an external shape of a drainage system in an embodiment of the present application.

FIG. 3 is a schematic view of the drainage system of the present embodiment in a state installed in a collection tank.

Fig. 4 is a partially enlarged schematic view of a portion a in fig. 2.

Figure 5 is a schematic view of a highlighted anchor structure in an embodiment of the present application.

Figure 6 is a schematic view showing the connection structure between the connection plate and the vertical rod in the embodiment of the present application.

Description of reference numerals: 1. a water pump; 2. a filter assembly; 21. a mounting seat; 211. mounting a plate; 2111. a mounting ring; 212. a connecting pipe; 213. erecting a rod; 2131. a chute; 22. a first filter screen; 23. a second filter screen; 231. a guide hole; 3. a buoyant member; 4. a guide assembly; 41. a support; 411. a base plate; 412. a support bar; 4121. connecting holes; 4122. a compression nut; 4123. an additional tube; 42. a connecting rod; 421. mounting holes; 422. jacking the bolt; 423. a guide wheel; 43. a guide bar; 5. a collection tank; 6. a fixing assembly; 61. a fixed seat; 611. inserting holes; 612. a first jack; 613. a clamping groove; 62. a fixing member; 621. fixing the rod; 6211. installing a pipe; 622. a plug rod; 6221. an ear plate; 6222. a second jack; 623. a return spring; 7. a wire take-up roller; 71. pulling a rope; 711. a horizontal portion; 712. a vertical portion; 8. a plug-in unit; 81. a connecting plate; 811. a slider; 812. a clamping block; 82. and (4) inserting the rod.

Detailed Description

The present application is described in further detail below with reference to figures 1-6.

The embodiment of the application discloses foundation ditch construction drainage system. Referring to fig. 1 and 2, the drainage system includes a water pump 1, a filter assembly 2, a buoyancy member 3, and a guide assembly 4.

The water pump 1 is used for pumping water in the collecting tank 5 to the outside of the foundation pit; the filter assembly 2 is arranged to filter water entering the water pump 1, so that the influence of silt on the water pump 1 is reduced as much as possible; the buoyancy member 3 can enable the water pump 1 to float on the water surface in the collecting pool 5, and the sediment in the water can be settled in the collecting pool 5, so that the sediment content at the water surface of the collecting pool 5 is less than the sediment content at the bottom of the collecting pool 5, and the buoyancy member 3 enables the water pump 1 to float on the water surface, and the influence of the sediment on the water pump 1 can be further reduced; the guide assembly 4 is arranged to enable the water pump 1, the filter assembly 2 and the buoyancy element 3 to rise and fall only with the height of the liquid level in the collecting tank 5, and not to float everywhere in the collecting tank 5.

The filter assembly 2 comprises a mounting seat 21, the mounting seat 21 comprises two mounting plates 211 which are arranged in parallel, the mounting plates 211 are circular and annular, and a connecting pipe 212 with a rectangular cross section is fixedly connected between the two mounting plates 211; the lower surface of the mounting seat 21 is also fixedly connected with a plurality of circular mounting rings 2111;

the number of the water pumps 1 is multiple, and the multiple water pumps 1 correspond to the multiple mounting rings 2111 one by one; the mounting ring 2111 is provided with a first filter screen 22, the top of the first filter screen 22 is provided with an opening, the first filter screen 22 is sleeved on the periphery of the water pump 1 through the opening at the top, meanwhile, the first filter screen 22 is further sleeved on the outer peripheral surface of the mounting ring 2111, and the first filter screen 22 is in threaded connection with the mounting ring 2111.

The second filter screen 23 is further arranged under the mounting plate 211, an opening is formed in the top of the second filter screen 23, the second filter screen 23 is sleeved on the outer peripheral surface of the mounting plate 211 at the bottom of the mounting seat 21 through the opening in the top, and the second filter screen 23 is in threaded connection with the mounting seat 21. The water pump 1 has a drain pipe extending through the upper surface of the mounting base 21.

The buoyancy member 3 is a buoyancy airbag, the buoyancy member 3 is a circular ring structure sleeved on the periphery of the connecting pipe 212, and the buoyancy member 3 is fixedly connected between the two mounting plates 211. An additional hole for the water supply pump 1 to pass through is formed in the buoyancy piece 3;

the staff places mount pad 21 back in collecting pit 5, mount pad 21 and a plurality of water pump 1 can float the surface of water in collecting pit 5 under the effect of buoyancy piece 3, simultaneously first filter screen 22, second filter screen 23 and water pump 1 can immerse in the aquatic, make water pump 1 can extract the comparatively clear water of surface of water position department in the collecting pit 5, first filter screen 22 can carry out primary filter to the great silt granule of aquatic simultaneously, second filter screen 23 can carry out secondary filter to the impurity of aquatic, like this through twice after filtering get into the silt significantly reduced in the water pump 1, thereby the influence of silt to water pump 1 has been reduced.

Referring to fig. 2, the guide assembly 4 includes a support 41, a connecting rod 42 and a guide rod 43, the support 41 is disposed on the ground at the periphery of the water bath, and the support 41 includes a bottom plate 411 and a support rod 412. The bottom plate 411 is horizontally arranged on the ground at the periphery of the water pool, the bottom plate 411 and the ground are fixed together through a plurality of bolts, the support rod 412 is fixedly connected to the upper surface of the bottom plate 411, and the support rod 412 is perpendicular to the bottom plate 411.

The cross sections of the connecting rod 42 and the guide rod 43 are rectangular, the top end of the supporting rod 412 is provided with a connecting hole 4121 matched with the connecting rod 42, the connecting rod 42 penetrates through the connecting hole 4121, and the connecting rod 42 is connected with the supporting rod 412 in a sliding mode through the connecting hole 4121.

The end face of the top end of the support rod 412 is in threaded connection with a compression nut 4122, and the compression nut 4122 penetrates into the connecting hole 4121. The worker may secure the connecting rod 42 to the support rod 412 by screwing the compression nut 4122.

The upper surface of the connecting rod 42, which is far away from one end of the supporting rod 412, is provided with a mounting hole 421, the guide rod 43 passes through the mounting hole 421, and the guide rod 43 is connected to the connecting rod 42 in a sliding manner through the mounting hole 421. All wear to be equipped with puller bolt 422 on the both sides wall of connecting rod 42, set up threaded connection between puller bolt 422 and the connecting rod 42, and in two puller bolts 422 all penetrated mounting hole 421, formed the clamp force that presss from both sides tightly guide bar 43 between two puller bolts 422. After the worker finishes adjusting the position of the guide rod 43, the worker fixes the guide rod 43 by screwing the two tightening bolts 422.

Referring to fig. 1 and 2, the lower surface of the second filter 23 is provided with a guide hole 231 adapted to the guide rod 43, and the guide rod 43 passes through the connection pipe 212 and then passes through the guide hole 231. Under the action of the guide rod 43, the mounting base 21 can only lift along with the liquid level in the collecting tank 5.

Referring to fig. 3, in the process of installing the drainage system, first, the first filter screen 22, the second filter screen 23 and the water pump 1 are installed on the installation base 21, then the support base 41 is fixed on the ground at the periphery of the collecting tank 5, then the connecting rod 42 is slidably connected to the supporting rod 412, then the installation base 21 floats on the water surface, simultaneously the guide rod 43 is installed on the connecting rod 42, the guide rod 43 passes through the connecting pipe 212 of the installation base 21 and the guide hole 231 of the second filter screen 23, and then the connecting rod 42 is fixed to the support base 41 by the compression nut 4122 after extending the connecting rod 42 to the middle of the collecting tank 5 by a proper length. Thus, the installation of the guide rod 43 and the installation between the guide rod 43 and the installation base 21 can be completed on the shore of the collecting tank 5, thereby facilitating the installation of the drainage system.

Referring to fig. 2 and 4, a fixing assembly 6 is provided between the connecting rod 42 and the mounting seat 21, and the fixing assembly 6 is provided to temporarily fix the mounting seat 21 to the connecting rod 42. In this way, in the process of installing the drainage system, after the worker installs the connection rod 42 on the support 41, the worker can temporarily fix the installation seat 21 to the connection rod 42 through the fixing assembly 6, so that the guide rod 43 can more conveniently pass through the connection pipe 212 in the installation seat 21 and the guide hole 231 of the second filter screen 23 in the process of installing the connection rod 42.

The fixing component 6 comprises a fixing seat 61 and a fixing part 62, the fixing seat 61 is fixedly connected to the upper surface of the mounting seat 21, the fixing seat 61 is provided with an insertion hole 611, and the insertion hole 611 is horizontally arranged; the mounting 62 includes dead lever 621 and bayonet joint pole 622, and the vertical setting of dead lever 621, and the top rigid coupling of dead lever 621 in the lower surface of connecting rod 42, the bottom rigid coupling of dead lever 621 have with the cooperation of bayonet joint pole 622 installation pipe 6211 that uses, installation pipe 6211 is parallel with spliced eye 611, bayonet joint pole 622 slides and connects in installation pipe 6211.

The worker inserts the insertion rod 622 into the insertion hole 611 of the fixing base 61, at this time, the mounting base 21 is temporarily fixed to the connecting rod 42, at this time, the connecting pipe 212 in the mounting base 21 and the guide hole 231 of the lower surface of the second filter screen 23 are both aligned with the mounting hole 421 of the upper surface of the connecting rod 42, and then, the worker fixes the guide rod 43 to the connecting rod 42 by using the tightening bolt 422 after passing the guide rod 43 through the mounting hole 421, the connecting pipe 212 and the guide hole 231. Then, the connecting rod 42 extends towards the middle of the collecting tank 5, after the connecting rod 42 extends to a proper length, the staff pulls out the insertion rod 622 from the insertion hole 611, at this time, the fixing component 6 loses the limitation on the mounting seat 21, and the mounting seat 21 can slide downwards to the liquid level in the water tank.

Referring to fig. 2, an additional tube 4123 adapted to the connection rod 42 is fixedly connected to a surface of the support rod 412 facing the collecting tank 5, the additional tube 4123 is aligned with the connection hole 4121, the connection rod 42 passes through the additional tube 4123, and the connection rod 42 and the additional tube 4123 are slidably connected; the lower surface of the additional pipe 4123 is provided with the wire collecting roller 7, the wire collecting roller 7 is wound with the pulling rope 71, one end of the pulling rope 71 is connected with the mounting seat 21, and after the worker removes the limitation of the fixing assembly 6 on the mounting seat 21, the worker can make the mounting seat 21 slowly descend along the guide rod 43 through the pulling rope 71, so that the impact generated when the mounting seat 21 is contacted with the water surface in the descending process is smaller, and the influence on the water pump 1 is reduced.

Referring to fig. 5 and 6, a return spring 623 arranged along the length direction of the mounting tube 6211 is arranged right above the mounting tube 6211, one end of the return spring 623 is fixedly connected with the side wall of the fixing rod 621, the upper surface of the insertion rod 622 is fixedly connected with an ear plate 6221, and one end of the return spring 623, which is far away from the fixing rod 621, is fixedly connected with the ear plate 6221. When the insertion rod 622 is inserted into the insertion hole 611, the return spring 623 generates a storage force that pushes the insertion rod 622 out of the insertion hole 611. The upper surface of fixing base 61 has seted up the first jack 612 of vertical setting, has seted up second jack 6222 on the peg 622, and first jack 612 and second jack 6222 align, and the rigid coupling has plug connector 8 on the stay cord 71, and plug connector 8 includes connecting plate 81 and peg 82, and connecting plate 81 and peg 82 mutually perpendicular, in first jack 612 and second jack 6222 were inserted to peg 82, stay cord 71 and the one side rigid coupling that connecting plate 81 deviates from peg 82.

Referring to fig. 4 and 6, a vertical rod 213 is fixedly connected to the upper surface of the mounting base 21, the vertical rod 213 is perpendicular to the upper surface of the mounting base 21, a dovetail-shaped sliding groove 2131 is formed in a side wall of the vertical rod 213, the sliding groove 2131 is arranged along the length direction of the vertical rod 213, a sliding block 811 adapted to the sliding groove 2131 is fixedly connected to a side wall of the connecting plate 81, and the sliding block 811 is slidably connected in the sliding groove 2131.

After the worker moves the mounting base 21 to a designated place, the worker pulls the rope 71 to pull the rope 71, so that the insertion rod 82 is separated from the first insertion hole 612 and the second insertion hole 6222, at this time, the insertion rod 622 is separated from the insertion hole 611 on the fixing base 61 under the action of the return spring 623, at this time, the fixing assembly 6 loses the limitation on the mounting base 21, the mounting base 21 slides downwards along the guide rod 43, meanwhile, the rope 71 is connected with the mounting base 21 through the insertion piece 8 and the upright rod 213 in the process, and the worker can slowly lower the mounting base 21 to the position of the liquid level through the rope 71.

Referring to fig. 2, in order to make it easier for a worker to pull out the inserting rod 622 from the second inserting hole 6222, a guide wheel 423 is rotatably connected to a lower surface of the connecting rod 42, and the pulling rope 71 between the wire take-up roller 7 and the inserting member 8 includes a horizontal portion 711 and a vertical portion 712 by the guide wheel 423. Thus, the plug 8 is more easily forced upward by the worker during pulling the rope 71 by the pulling rope 71, so that the plug 8 is more easily pulled out from the second inserting hole 6222 by the worker.

Referring to fig. 6, a plurality of spherical and elastic joint blocks 812 are fixedly connected to the lower surface of the connecting plate 81, a plurality of joint grooves 613 matched with the joint blocks 812 are formed in the upper surface of the corresponding fixing base 61, when the lower surface of the connecting plate 81 is attached to the upper surface of the fixing base 61, the joint blocks 812 are connected in the joint grooves 613, so that the plug connector 8 can be temporarily fixed on the fixing base 61, and when people move the connecting rod 42, the plug connector 8 is not easy to separate from the fixing base 61.

The implementation principle of a foundation pit construction drainage system in the embodiment of the application is as follows: the worker firstly fixes the support 41 on the ground around the collecting tank 5, then inserts the connecting rod 42 into the connecting hole 4121 on the support 41, and installs the plurality of water pumps 1, the first filter screen 22 and the second filter screen 23 on the mounting base 21, then sets the mounting base 21 right below the connecting rod 42, then inserts the inserting rod 622 into the inserting hole 611 of the fixing base 61 while aligning the first inserting hole 612 and the second inserting hole 6222, then inserts the inserting rod 82 into the first inserting hole 612 and the second inserting hole 6222, and inserts the plurality of clamping blocks 812 on the connecting plate 81 into the clamping grooves 613 on the fixing base 61.

The worker fixes the guide rod 43 to the connection rod 42 by the tightening bolt 422 after passing the guide rod 43 through the installation hole 421, the connection pipe 212 and the guide hole 231 in sequence, and then fixes the connection rod 42 to the support rod 412 by the compression nut 4122 after moving the connection rod 42 toward the middle of the collecting tank 5 by a proper distance. Finally, the worker pulls the pull rope 71 to enable the connecting plate 81 and the inserting rod 82 to move upwards, after the inserting rod 82 is separated from the first inserting hole 612 and the second inserting hole 6222, under the action of the return spring 623, the inserting rod 622 is separated from the inserting hole 611, the installation base 21 is further enabled to lose the limitation of the fixing assembly 6, and the worker can slowly drop the installation base 21 to the position of the liquid level in the collecting tank 5 through the pull rope 71. The water pump 1 can continuously pump the water on the water surface of the collecting tank 5 to the outside of the foundation pit.

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 foundation ditch construction drainage system which characterized in that: the water pump comprises a filtering component (2) and a water pump (1), wherein the filtering component (2) comprises a mounting seat (21), the water pump (1) is mounted on the mounting seat (21), a first filter screen (22) is mounted on the mounting seat (21) on the periphery of the water pump (1), the first filter screen (22) is sleeved on the periphery of the water pump (1), a second filter screen (23) is further mounted on the mounting seat (21), and the second filter screen (23) is sleeved on the periphery of the first filter screen (22); the floating device also comprises a buoyancy piece (3) used for floating the mounting seat (21) on the water surface; the device also comprises a guide component (4), and under the action of the guide component (4), the mounting seat (21) can only lift along with the liquid level in the collecting tank (5); the guide assembly (4) comprises a support (41), a connecting rod (42) and a guide rod (43), the support (41) is detachably fixed on the peripheral ground of the collecting tank (5), the connecting rod (42) is installed on the support (41), a vertically arranged mounting hole (421) is formed in the connecting rod (42), the guide rod (43) is connected to the connecting rod (42) in a sliding mode through the mounting hole (421), a jacking bolt (422) used for jacking the guide rod (43) is arranged on the connecting rod (42) in a penetrating mode, the mounting seat (21) comprises a connecting pipe (212) matched with the guide rod (43) in use, the guide rod (43) penetrates through the mounting hole (421) and then penetrates through the connecting pipe (212), and the guide rod (43) and the connecting pipe (212) are connected in a sliding mode; a connecting hole (4121) which is horizontally arranged is formed in the support (41), and the connecting rod (42) is connected to the support (41) in a sliding manner through the connecting hole (4121); the connecting rod (42) is provided with a fixing component (6) used for temporarily fixing the mounting seat (21); the fixing component (6) comprises a fixing seat (61) and a fixing piece (62), the fixing seat (61) is fixedly connected to the mounting seat (21), and the side wall of the fixing seat (61) is provided with an inserting hole (611); fixing piece (62) include dead lever (621), the top rigid coupling of dead lever (621) in connecting rod (42), the bottom of dead lever (621) is provided with the slide parallel with spliced eye (611), it is connected with spliced eye (622) with spliced eye (611) cooperation use to slide in the slide, when spliced eye (611) is inserted in, mount pad (21) are fixed in connecting rod (42) temporarily, and connecting pipe (212) in mount pad (21) aligns with mounting hole (421) of connecting rod (42).

2. A foundation pit construction drainage system according to claim 1, wherein: the support (41) is provided with a wire winding roller (7), a pull rope (71) is wound on the wire winding roller (7), and the pull rope (71) is connected with the mounting seat (21).

3. A foundation pit construction drainage system according to claim 2, wherein: first jack (612) with spliced eye (611) intercommunication are seted up to the upper surface of fixing base (61), second jack (6222) have been seted up on peg rod (622), set up to reset spring (623) between peg rod (622) and dead lever (621), the rigid coupling has plug connector (8) on stay cord (71) simultaneously, plug connector (8) are including peg rod (82), first jack (612) and second jack (6222) are passed in peg rod (82), the rigid coupling has pole setting (213) on mount pad (21), spout (2131) parallel with first jack (612) have been seted up on the lateral wall of pole setting (213), the rigid coupling has slider (811) on plug connector (8), slider (811) slide and connect in spout (2131).

4. A foundation pit construction drainage system according to claim 3, wherein: plug connector (8) still include connecting plate (81) on inserted bar (82) top of rigid coupling, the rigid coupling has a plurality of globulings and be rich in elastic joint piece (812) on the lower surface of connecting plate (81), and a plurality of joint grooves (613) have been seted up to fixing base (61) upper surface that corresponds, a plurality of joint pieces (812) and a plurality of joint grooves (613) one-to-one.