CN219653742U

CN219653742U - Sump slurry discharging system

Info

Publication number: CN219653742U
Application number: CN202320460532.8U
Authority: CN
Inventors: 赵旭; 任亮; 杜双; 段成亮; 李相伟; 肖航; 王宇轩; 焦少飞; 王春龙
Original assignee: BEIJING URBAN CONSTRUCTION ENGINEERING CO LTD
Current assignee: BEIJING URBAN CONSTRUCTION ENGINEERING CO LTD
Priority date: 2023-03-13
Filing date: 2023-03-13
Publication date: 2023-09-08
Anticipated expiration: 2033-03-13

Abstract

The utility model discloses a sump slurry discharging system, which comprises: the water collecting pool is arranged on the foundation raft plate and surrounds the outlet of the dewatering well; the water collecting tank is built by brick bodies, and a waterproof layer is constructed on the inner wall of the water collecting tank; the slurry discharging device is arranged in the water collecting tank and comprises a slurry discharging pump, a slurry discharging pipe and an anti-blocking device; the slurry discharge pump comprises a pump body and a filter screen, wherein a slurry outlet of the pump body is communicated with the slurry discharge pipe, a filter hole is formed in the filter screen, the filter screen is connected with the lower end of the pump body, and the filter screen surrounds a slurry inlet of the pump body; the anti-blocking device is arranged below the slurry discharging pump and is used for preventing the filter holes of the filter screen from being blocked. Because the water collecting tank and the slurry discharging device are arranged on the foundation raft, when the underground water or the cement slurry is returned to the upper part of the foundation raft, the returned underground water and cement slurry are collected and enclosed by the water collecting tank, so that the underground water and cement slurry cannot be scattered to other positions.

Description

Sump slurry discharging system

Technical Field

The utility model relates to a sump slurry discharging system.

Background

In the construction process of the building foundation, adverse effects of groundwater on construction are required to be dealt with, a dewatering well is required to be arranged in a water collecting pit, and the dewatering well is required to be plugged in the later stage of construction. For construction projects that the water level of the underground water is higher than the elevation of the foundation raft and the water collecting pit, the water pressure balance needs to be kept in the well sealing construction process, and the underground water can return to the foundation raft at the moment; in addition, the upward cement paste exists in the well sealing down pouring process, and if the underground water and the cement paste are not treated, the water level above the foundation raft can rise and be polluted by the cement paste.

Disclosure of Invention

The utility model aims to provide a sump slurry discharging system for solving the technical problem.

The technical scheme for solving the technical problems is as follows: the water pit slurry discharging system is characterized in that a foundation raft is arranged at the bottom of a water pit, and an outlet section of a dewatering well is arranged in the foundation raft; the sump slurry discharging system comprises: the water collecting tank is arranged on the foundation raft, and surrounds the outlet of the dewatering well; the water collecting tank is built by brick bodies, and a waterproof layer is constructed on the inner wall of the water collecting tank; the slurry discharging device is arranged in the water collecting tank and comprises a slurry discharging pump, a slurry discharging pipe and an anti-blocking device; the slurry discharging pump comprises a pump body and a filter screen, wherein a slurry outlet of the pump body is communicated with the slurry discharging pipe, a filter hole is formed in the filter screen, the filter screen is connected with the lower end of the pump body, and the filter screen surrounds a slurry inlet of the pump body; the anti-blocking device is arranged below the slurry discharging pump and is used for preventing the filtering holes of the filtering net from being blocked.

The sump slurry discharging system disclosed by the utility model further comprises a pump body fixing ring, a cylinder body, a supporting plate and a supporting column, wherein the inner diameter of the pump body fixing ring is larger than the outer diameter of a cylindrical filter screen of the pump body, the upper end of the cylinder body is connected with the pump body fixing ring, the lower end of the cylinder body is connected with the supporting plate, and a through hole is formed in the supporting plate; the lower end of the slurry discharging pump is inserted into the pump body fixing ring, so that the filter screen is positioned in a space formed by the pump body fixing ring, the cylinder body and the supporting plate; the upper end of the support column is connected with the support plate.

According to the pit slurry discharging system disclosed by the utility model, the annular protrusion is further arranged on the supporting plate, the diameter of the annular protrusion is matched with the outer diameter of the cylindrical filter screen, and the filter screen is fixed by the annular protrusion.

According to the sump slurry discharging system disclosed by the utility model, the water permeable holes are further formed in the barrel of the anti-blocking device.

The sump slurry discharging system disclosed by the utility model further comprises a bottom plate and stirring blades, wherein the bottom plate is connected with the lower ends of the supporting columns, the stirring blades are arranged on the bottom plate, and a driving device connected with the stirring blades drives the stirring blades to rotate.

According to the pit slurry discharging system disclosed by the utility model, further, the number of the slurry discharging devices is two, one set of slurry discharging devices is arranged at a position close to the wellhead of the dewatering well, and the other set of slurry discharging devices is arranged at a position close to the side wall of the water collecting tank.

In the embodiment of the utility model, the water collecting tank and the slurry discharging device are arranged on the foundation raft, so that when the underground water or the cement slurry returns to the upper part of the foundation raft, the returned underground water and cement slurry are collected and blocked by the water collecting tank, and the underground water and cement slurry cannot be scattered to other positions.

Drawings

The foregoing and/or other advantages of the present utility model will become more apparent and more readily appreciated from the detailed description taken in conjunction with the following drawings, which are meant to be illustrative only and not limiting of the utility model, wherein:

FIG. 1 is a schematic top view of a sump slurry draining system in accordance with one embodiment of the present utility model;

FIG. 2 is a schematic view in section A-A of FIG. 1;

FIG. 3 is a schematic view of a slurry discharging apparatus according to an embodiment of the present utility model;

FIG. 4 is a split schematic view of a slurry discharging apparatus according to an embodiment of the present utility model;

FIG. 5 is a schematic view of an anti-blocking device according to an embodiment of the present utility model;

FIG. 6 is a schematic cross-sectional view of an anti-blocking device according to one embodiment of the present utility model.

In the drawings, the list of components represented by the various numbers is as follows:

1. basic raft, 2, dewatering well, 3, catch basin, 31, brick, 32, waterproof layer, 4, slurry discharging device, 41, slurry discharging pump, 411, pump body, 412, filter screen, 413, filter hole, 42, slurry discharging pipe, 43, anti-blocking device, 431, pump body fixing ring, 432, cylinder, 433, supporting plate, 434, supporting column, 435, bottom plate, 436, stirring vane, 437, driving device, 438, through hole, 439, pump body fixing ring inner hole.

Detailed Description

Hereinafter, an embodiment of the sump slurry discharging system of the present utility model will be described with reference to the accompanying drawings.

The examples described herein are specific embodiments of the present utility model, which are intended to illustrate the inventive concept, are intended to be illustrative and exemplary, and should not be construed as limiting the utility model to the embodiments and scope of the utility model. In addition to the embodiments described herein, those skilled in the art can adopt other obvious solutions based on the disclosure of the claims and specification, including those adopting any obvious substitutions and modifications to the embodiments described herein.

The drawings in the present specification are schematic views, which assist in explaining the concept of the present utility model, and schematically show the shapes of the respective parts and their interrelationships. Note that, in order to clearly show the structures of the components of the embodiments of the present utility model, the drawings are not drawn to the same scale. Like reference numerals are used to denote like parts.

For construction projects in which the water level of the groundwater is higher than the elevation of the foundation raft and the water collecting pit, the groundwater may rise above the foundation raft during well sealing construction, so that the groundwater on the foundation raft needs to be discharged to keep water pressure balance; in addition, the upward cement paste exists in the well sealing down pouring process, and if the underground water and the cement paste are not treated, the water level above the foundation raft can rise and be polluted by the cement paste. In order to solve the problems, the utility model provides the following technical scheme:

fig. 1 and 2 show a pit slurry discharging system according to an embodiment of the present utility model, wherein a foundation raft 1 is arranged at the bottom of a pit, and an outlet section of a dewatering well 2 is arranged in the foundation raft 1, i.e. the dewatering well comprises an outlet section, and an outlet is arranged at the upper end of the outlet section; the dewatering well further comprises an extension section connected to the lower end of the outlet section, and the extension section is used for extending to deeper stratum; the pit slurry discharging system comprises:

the water collecting tank 3 is arranged on the foundation raft 1, and the water collecting tank 3 surrounds the outlet of the dewatering well 2; the water collecting tank 3 is built by brick bodies 31, and a waterproof layer 32 is constructed on the inner wall of the water collecting tank 3; in a specific embodiment, the waterproof layer is a waterproof mortar layer and a polypropylene waterproof layer, the waterproof mortar layer is bonded to the brick body, and the polypropylene waterproof layer is bonded to the waterproof mortar layer. In a further preferred embodiment, a waterproof layer is constructed on the foundation raft in the area of the catchment. Through the arrangement of the waterproof layer, water leakage can be avoided. The height of the sump is typically not less than 1.2 meters, for example set to a height of 1.5 meters.

The pulp discharging device 4 is arranged in the water collecting tank 3, and the pulp discharging device 4 comprises a pulp discharging pump 41, a pulp discharging pipe 42 and an anti-blocking device 43; the slurry discharge pump 41 comprises a pump body 411 and a filter screen 412, a slurry outlet of the pump body 411 is communicated with a slurry discharge pipe 42, and the other end of the slurry discharge pipe is connected with a main water discharge pipe network outside the foundation pit; the filter screen 412 is provided with a filter hole 413, the filter screen 412 is connected with the lower end of the pump body 411, and the filter screen 412 surrounds a slurry inlet of the pump body 411; an anti-blocking device 43 is provided below the pulp pump 41 for preventing the filter holes 413 of the filter screen 412 from being blocked.

In the embodiment of the utility model, the water collecting tank and the slurry discharging device are arranged on the foundation raft, so that when the underground water or the cement slurry returns to the upper part of the foundation raft, the returned underground water and cement slurry are collected and blocked by the water collecting tank, and the underground water and cement slurry cannot be scattered to other positions. And the underground water and the cement paste are discharged to the main pipe network in time by using a paste discharging device arranged in the water collecting tank. In the slurry discharging system, the slurry entering the slurry inlet of the pump body is filtered by the filter screen, so that the impeller in the pump body can be prevented from being blocked by larger sand and stone. In addition, set up in the below of pulp discharge pump and prevent stifled ware, can make the mounted position of pulp discharge pump improve, avoid the grit of deposit to block up the filter screen. In a simpler implementation, the anti-blocking device is a supporting device with a cylindrical structure, and the slurry pump is supported by the anti-blocking device with the cylindrical structure.

Because the slurry in the water collecting tank contains sand and stone, the sand and stone in the liquid is easy to deposit at the bottom, and the deposited sand and stone can block the filter screen of the slurry discharging pump, so that the slurry discharging pump cannot operate. In the following description of another embodiment of the anti-blocking apparatus with reference to fig. 3 to 6, the anti-blocking apparatus 43 includes a pump body fixing ring 431, a cylinder 432, a supporting plate 433 and a supporting column 434, wherein an inner diameter of the pump body fixing ring 431 (a diameter of an inner hole 439 of the pump body fixing ring) is larger than an outer diameter of the cylindrical filter screen 412 of the pump body 411, for example, the inner diameter of the pump body fixing ring 431 is 0.5 to 2 mm larger than the outer diameter of the cylindrical filter screen 412 of the pump body 411, and according to the above-mentioned dimensions, the filter screen can be smoothly inserted into the pump body fixing ring and blocked by the pump body fixing ring. Utilize the backup pad to support the pump body and the filter screen of pulp discharge pump to utilize the pump body solid fixed ring to block the filter screen and can comparatively firm realization pulp discharge pump. But the pulp discharge pump may still topple over due to disturbance of the water flow at the bottom of the sump. In a more preferred embodiment, the support plate 433 is further provided with an annular protrusion, the diameter of which is adapted to the outer diameter of the cylindrical filter 412, and the filter 412 is fixed by the annular protrusion. The upper part of the filter screen is clamped by the fixing ring, and the lower part of the filter screen is fixed by the annular bulge, so that the slurry discharge pump can be prevented from toppling over. The upper end of the cylinder 432 is connected with the pump body fixing ring 431, the lower end of the cylinder 432 is connected with the supporting plate 433, and the supporting plate 433 is provided with a through hole 438; the lower end of the pulp discharge pump 41 is inserted into the pump body fixing ring 431, so that the filter screen 412 is positioned in the space formed by the pump body fixing ring 431, the cylinder 432 and the supporting plate 433; the upper ends of the support columns 434 are connected to support plates 433. In this embodiment, the support plate is supported to a certain height by the support column, preferably the support column has a height of 10 cm or more. In the slurry deposition process, the maximum-sized sand is usually deposited at the bottommost part, and the smaller sand size at the upper part of the bottom sand is closer to the size of the filter holes of the filter screen, so that the filter holes are easier to be blocked. In the above-mentioned embodiment, the filter screen of pulp discharge pump is located by pump body solid fixed ring, barrel and backup pad formation to be equipped with the through-hole in the backup pad, on the one hand can prevent that less size grit from getting into above-mentioned space by the barrel of side, on the other hand through having guaranteed that liquid gets into above-mentioned space by the bottom of backup pad, further get into to the pump body by the filter screen.

In a further preferred anti-blocking device embodiment, the anti-blocking device 43 comprises a pump body fixing ring 431, a cylinder 432, a supporting plate 433 and a supporting column 434, wherein the inner diameter of the pump body fixing ring 431 is larger than the outer diameter of the cylindrical filter screen 412 of the pump body 411, the upper end of the cylinder 432 is connected with the pump body fixing ring 431, the lower end of the cylinder 432 is connected with the supporting plate 433, and a through hole 438 is arranged on the supporting plate 433; the lower end of the pulp discharge pump 41 is inserted into the pump body fixing ring 431, so that the filter screen 412 is positioned in the space formed by the pump body fixing ring 431, the cylinder 432 and the supporting plate 433; the upper ends of the support columns 434 are connected to support plates 433. The anti-blocking device 43 further comprises a bottom plate 435 and stirring blades 436, wherein the bottom plate 435 is connected with the lower ends of the supporting columns 434, the stirring blades are arranged on the bottom plate 435, and a driving device 437 connected with the stirring blades drives the stirring blades to rotate. In this kind of embodiment, through setting up the stirring vane that can initiatively rotate in the backup pad below, can make the grit remove to the distance through stirring vane's rotation, and then can avoid the grit to be close to filter screen and backup pad, further avoid the filter screen to block up. In the above embodiment, the driving device may be a motor having a waterproof structure, and an output shaft of the motor is connected to the stirring blade.

For the anti-blocking device provided with the stirring blades, because large-size sand and small-size sand can be expelled simultaneously through the rotation of the stirring blades, an annular sand-free area is formed around the anti-blocking device, at the moment, sand deposition does not exist at the cylinder body part of the anti-blocking device, and at the moment, the cylinder body without the water permeable holes influences liquid to enter into a space formed by the pump body fixing ring, the cylinder body and the supporting plate, so that the liquid is influenced to enter the filter screen. In a further improved embodiment, the cylinder 432 of the blocking preventer 43 is provided with water permeable holes, so that more liquid can enter the space, and the liquid discharge efficiency is further improved.

The number of the slurry discharging devices can be set according to the water discharging requirement of the construction site. For example, the number of the slurry discharging devices 4 is two, one slurry discharging device 4 is arranged at a position close to the wellhead of the dewatering well 2, and the other slurry discharging device 4 is arranged at a position close to the side wall of the water collecting tank 3. Of course, two sets of adjacent pulp discharging devices can be arranged.

The above disclosed features are not limited to the disclosed combinations with other features, and other combinations between features can be made by those skilled in the art according to the purpose of the utility model to achieve the purpose of the utility model.

Claims

1. The water pit slurry discharging system is characterized in that a foundation raft (1) is arranged at the bottom of a water pit, and an outlet section of a dewatering well (2) is arranged in the foundation raft (1); the sump slurry discharging system comprises:

the water collecting tank (3) is arranged on the foundation raft (1), and the water collecting tank (3) surrounds the outlet of the dewatering well (2); the water collecting tank (3) is built by a brick body (31), and a waterproof layer (32) is constructed on the inner wall of the water collecting tank (3);

the slurry discharging device (4) is arranged in the water collecting tank (3), and the slurry discharging device (4) comprises a slurry discharging pump (41), a slurry discharging pipe (42) and an anti-blocking device (43); the pulp discharging pump (41) comprises a pump body (411) and a filter screen (412), a pulp outlet of the pump body (411) is communicated with the pulp discharging pipe (42), a filter hole (413) is formed in the filter screen (412), the filter screen (412) is connected with the lower end of the pump body (411), and the filter screen (412) surrounds a pulp inlet of the pump body (411); the anti-blocking device (43) is arranged below the pulp discharging pump (41) and is used for preventing the filtering holes (413) of the filtering net (412) from being blocked.

2. The sump slurry discharging system according to claim 1, wherein the anti-blocking device (43) comprises a pump body fixing ring (431), a cylinder body (432), a supporting plate (433) and a supporting column (434), the inner diameter of the pump body fixing ring (431) is larger than the outer diameter of a cylindrical filter screen (412) of the pump body (411), the upper end of the cylinder body (432) is connected with the pump body fixing ring (431), the lower end of the cylinder body (432) is connected with the supporting plate (433), and a through hole (438) is arranged on the supporting plate (433); the lower end of the pulp discharging pump (41) is inserted into the pump body fixing ring (431) so that the filter screen (412) is positioned in a space formed by the pump body fixing ring (431), the cylinder (432) and the supporting plate (433); the upper end of the support column (434) is connected with the support plate (433).

3. The pit mud drainage system according to claim 2, wherein the support plate (433) is further provided with an annular protrusion, the diameter of which is adapted to the outer diameter of the cylindrical filter screen (412), and the filter screen (412) is fixed by the annular protrusion.

4. Sump pulping system according to claim 2, characterized in that the cylinder (432) of the anti-blocking device (43) is provided with water permeable holes.

5. The sump slurry discharge system of claim 2, further comprising a bottom plate (435) and a stirring blade (436), the bottom plate (435) being connected to a lower end of the supporting column (434), the stirring blade being mounted on the bottom plate (435), and a driving device (437) connected to the stirring blade driving the stirring blade to rotate.

6. Sump pulping system according to claim 1, characterized in that the number of the pulping devices (4) is two, wherein one pulping device (4) is arranged at a position close to the wellhead of the dewatering well (2) and the other pulping device (4) is arranged at a position close to the side wall of the sump (3).