Water-rich silt sand soil layer foundation dewatering and solidifying device

Abstract

The utility model discloses a dewatering and solidifying device for a water-rich silt sand soil layer foundation, which relates to the technical field of geotechnical engineering soft foundation treatment equipment and comprises a pollution discharge mechanism, the pollution discharge mechanism comprises a vacuum pump, and the vacuum pump is provided with a double-layer filtering and dewatering mechanism through a regulating valve and a water pipe. The outer side of the outer pipe is sleeved with the filter screen (the aperture is smaller than or equal to 0.5 mm), and the filter screen is used for intercepting large-particle silt; the tail end of the inner pipe is in threaded connection with a spiral nozzle to accelerate mud-water separation through a rotational flow effect; an annular channel is formed between the outer pipe and the inner pipe and serves as a mud-water mixing and agent reaction area, a vacuum pump is started to extract mud water in a cement-rich sand layer through a filter screen of the outer pipe, the mud water is lifted to a multi-stage precipitation tank through rotational flow of a spiral water pipe, and the combination is combined with a multi-stage precipitation tank through collaborative design of graded filtration rotational flow strengthening (centrifugal force effect) and reaction area optimization (agent mixing). And the problems of low precipitation efficiency and poor soil stability of the water-rich sandy soil layer are synchronously solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a soft foundation treatment equipment technical field of geotechnical engineering, concretely relates to a water-rich silt sand layer ground foundation dewatering and curing device. BACKGROUND

[0002] Water-rich silt sand layer is high in natural moisture content (often up to 50%-80%), low in permeability coefficient (10 -5 ~ 10 -7 cm / s) and large in sand content fluctuation, and traditional methods such as composite foundation method (cement mixing pile) need a large amount of earthwork to be transported out, which is high in cost (single processing cost is more than 300 yuan / m 3 )17; drainage consolidation method (plastic drainage plate combined with surcharge) has a construction period of 3-6 months, and it is difficult to meet the rapid construction requirement;

[0003] Therefore, a water-rich silt sand layer ground foundation dewatering and curing device needs to be invented, which cooperates with a double-layer filtration dewatering mechanism and other mechanisms such as a multi-stage sedimentation tank, solves the problems of low dewatering efficiency and poor soil stability of water-rich silt sand layer through the collaborative design of staged filtration cyclone strengthening (centrifugal force effect) and reaction zone optimization (reagent mixing). SUMMARY

[0004] The utility model aims at providing a water-rich silt sand layer ground foundation dewatering and curing device to solve the problems in the above background technology.

[0005] To solve the above technical problems, the utility model adopts the technical scheme that

[0006] A water-rich silt sand layer ground foundation dewatering and curing device, comprising a drainage mechanism, the drainage mechanism comprises a vacuum pump, the vacuum pump is provided with a double-layer filtration dewatering mechanism through an adjusting valve and a water pipe, the vacuum pump is connected with a main pipeline at the top of a spiral water pipe through a flange channel, the spiral water pipe is connected with a multi-stage sedimentation tank through an inclined pipeline, the other end of the vacuum pump is connected with the double-layer filtration dewatering mechanism through a pipeline, one end of the double-layer filtration dewatering mechanism is provided with a curing mechanism through a pipeline, and the surface of the double-layer filtration dewatering mechanism is provided with a sensing element;

[0007] The double-layer filtration dewatering mechanism comprises an inner tube, an outer tube is sleeved on the outer side of the inner tube, a filter screen is sleeved on the surface of the outer tube, a spiral spray head is threadedly connected to one end of the inner tube, and a spiral water pipe is sleeved on the surface of the filter screen;

[0008] The multi-stage sedimentation tank comprises a filter tank, one end of the filter tank is fixedly connected with a water outlet, the other end of the filter tank is fixedly connected with a water inlet, the inside of the filter tank is fixedly connected with a second partition plate and a first partition plate, a first filter opening is formed in one side of the second partition plate, and anti-overflow holes are formed in the surfaces of the second partition plate and the first partition plate.

[0009] The further improvement of the utility model technical scheme lies in that: the second partition plate and the first partition plate divide the filter tank into the first tank, the second tank and the third tank which are arranged in sequence and have an opening of a part of the filter tank, the bottom of the second tank and the third tank is designed as a slope surface structure instead of a flat bottom.

[0010] The further improvement of the utility model technical scheme lies in that: the first tank is a sewage collection tank, the second tank and the third tank are first-stage and second-stage filter tanks respectively, the bottom of the second tank is a first slope surface structure, the bottom of the third tank is a second slope surface structure, the first slope surface structure and the second slope surface structure are opposite to each other, when the sewage enters the second tank from the first tank, most of the sludge or other impurity particles are blocked in the first tank by the filter screen, and the sludge or other impurity particles in the once-filtered sewage entering the second tank sink and deposit downward after gravity static setting.

[0011] The further improvement of the utility model technical scheme lies in that: the outer wall of the filter tank is provided with the second drain valve, the first drain valve and the third drain valve corresponding to the first tank, the second tank and the second tank respectively for emptying, the liquid in the first tank, the second tank and the third tank, the first drain valve and the third drain valve are arranged on the side of the slope bottom of the first slope surface structure and the second slope surface structure respectively, one side of the first partition plate is fixedly connected with a clamping block, the surface of the clamping block is clamped with a filter plate, a second filter opening is formed in one side of the first partition plate, and the first filter opening and the second filter opening are provided with clamping blocks around for inserting the filter screen plate to play a filtering role.

[0012] The further improvement of the utility model technical scheme lies in that: the solidification mechanism comprises a solidifying agent medicine barrel, one end of the solidifying agent medicine barrel is fixedly connected with a transmission pump, the output end of the transmission pump is fixedly connected with a transmission pipe, a flow meter is installed on the transmission pipe fixedly connected with the output end of the transmission pump, the solidifying agent medicine barrel is connected with one side of the inner pipe through the transmission pipe, and the solidifying agent medicine barrel transmits the solidifying agent to the sludge-water mixed flow which is atomized and sprayed through the spiral spray head through the transmission pump, so that the fine particle agglomeration effect is enhanced.

[0013] The further improvement in the technical scheme of the utility model lies in that the inductor comprises a sensor, the sensor is installed on one side of the outer pipe, one end of the sensor is electrically connected with a PLC controller, the soil pressure gauge is installed on one side of the outer pipe and close to one side of the spiral spray head, the sand content of the sludge in the outer pipe is monitored in real time through the sensor, and the adding speed (flow meter 52 feedback closed loop control) of the transmission pump is adjusted through the PLC controller.

[0014] Due to the adoption of the above technical scheme, the utility model has the following technical progress compared with the prior art:

[0015] 1. The water-rich sludge sand layer foundation dewatering and curing device is characterized in that the outer pipe is externally sleeved with a filter screen (aperture ≤0.5mm) for intercepting large-particle sludge; the inner pipe is threadedly connected with a spiral spray head at the end, sludge and water are separated through cyclone action; an annular channel is formed between the outer pipe and the inner pipe, serving as a sludge mixing and reagent reaction zone; a vacuum pump is started to extract sludge and water in the water-rich sludge layer through the filter screen of the outer pipe; the sludge and water are lifted to the multi-stage sedimentation tank through cyclone of the spiral water pipe; the combination synchronously solves the problems of low dewatering efficiency and poor soil stability of the water-rich sludge layer through the cooperative design of the staged filtering cyclone strengthening (centrifugal force action) and the reaction zone optimization (reagent mixing).

[0016] 2. The water-rich sludge sand layer foundation dewatering and curing device is characterized in that the bottom of the second water pool and the third water pool is designed as a slope structure instead of a flat bottom; when the sewage enters the second water pool from the first water pool, most of the sludge or other impurity particles are blocked in the first water pool by the filter screen; the sludge or other impurity particles in the once-filtered sewage entering the second water pool are deposited downward due to gravity after static state; due to the slope of the bottom, the sediment finally slowly slides to the bottom of the slope due to gravity, forming a sediment accumulation; a similar process also occurs in the third water pool; due to the sediment accumulation at the bottom of the slope, the bottom of the slope can be cleaned during cleaning, improving the cleaning efficiency and reducing the difficulty of cleaning the water pool, thereby reducing the maintenance cost of the device. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a whole structure schematic view of the utility model;

[0018] Figure 2 It is a double-layer filtering dewatering mechanism structure schematic view of the utility model;

[0019] Figure 3 It is a multi-stage sedimentation tank structure schematic view of the utility model;

[0020] Figure 4 It is a second water pool structure schematic view of the utility model.

[0021] In the figure: 1, sewage mechanism; 2, spiral water pipe; 3, multi-stage sedimentation tank; 30, filter pool; 31, drain outlet; 32, water inlet; 33, second partition; 34, anti-overflow hole; 35, first filter opening; 36, first partition; 37, clamping block; 38, second filter opening; 39, third pool; 390, second pool; 391, first pool; 392, third drain valve; 393, second drain valve; 394, first drain valve; 4, induction piece; 40, sensor; 41, PLC controller; 42, earth pressure meter; 5, solidification mechanism; 50, solidifying agent medicine barrel; 51, transmission pump; 52, flow meter; 6, double-layer filter dewatering mechanism; 60, filter screen; 61, inner tube; 62, outer tube; 63, spiral spray head; 7, vacuum pump. DETAILED DESCRIPTION

[0022] The utility model will be made further detailed explanation in combination with example:

[0023] Example 1

[0024] As Figures 1-4 shown, the utility model provides a kind of water-rich silt sand layer ground dewatering solidification device, including sewage mechanism 1, sewage mechanism 1 includes vacuum pump 7, vacuum pump 7 is equipped with double-layer filter dewatering mechanism 6 by regulating valve and water pipe, vacuum pump 7 is connected with the main pipeline of the top of spiral water pipe 2 by flange passage, spiral water pipe 2 is connected with multi-stage sedimentation tank 3 by inclined pipeline, another end of vacuum pump 7 is connected with double-layer filter dewatering mechanism 6 by pipeline, and double-layer filter dewatering mechanism 6 is equipped with solidification mechanism 5 by pipeline at one end, and induction piece 4 is installed on the surface of double-layer filter dewatering mechanism 6;

[0025] Double-layer filter dewatering mechanism 6 includes inner tube 61, and the outer side of inner tube 61 is sleeved with outer tube 62, and the surface of outer tube 62 is sleeved with filter screen 60, and one end of inner tube 61 is screw-connected with spiral spray head 63, and the surface of filter screen 60 is sleeved with spiral water pipe 2;

[0026] The multi-stage sedimentation tank 3 comprises a filter tank 30, one end of the filter tank 30 is fixedly connected with a water outlet 31, the other end of the filter tank 30 is fixedly connected with a water inlet 32, the inside of the filter tank 30 is fixedly connected with a second partition plate 33 and a first partition plate 36, one side of the second partition plate 33 is provided with a first filtering opening 35, the surfaces of the second partition plate 33 and the first partition plate 36 are provided with anti-overflow holes 34, the solidification mechanism 5 comprises a solidifying agent barrel 50, one end of the solidifying agent barrel 50 is fixedly connected with a transmission pump 51, the output end of the transmission pump 51 is fixedly connected with a transmission pipe, the transmission pipe fixedly connected with the output end of the transmission pump 51 is installed with a flowmeter 52, the solidifying agent barrel 50 is connected with one side of the inner pipe 61 through the transmission pipe, the sensing part 4 comprises a sensor 40, the sensor 40 is installed on one side of the outer pipe 62, one end of the sensor 40 is electrically connected with a PLC controller 41, a soil pressure gauge 42 is installed on one side of the outer pipe 62 and close to one side of the spiral spray head 63;

[0027] Specifically, the outer pipe 62 is sleeved with a filter screen 60 (pore size ≤0.5mm) on the outside, which is used for intercepting large particle silt; the inner pipe 61 is threadedly connected with the spiral spray head 63 at the tail end, and the mud-water separation is accelerated through the cyclone action; the annular channel is formed between the outer pipe 62 and the inner pipe 61, which is used as a mud-water mixing and reagent reaction zone; the mud-water in the water-rich silt layer is extracted through the filter screen 60 of the outer pipe 62 by starting the vacuum pump 7, and the mud-water is lifted to the multi-stage sedimentation tank 3 through the spiral water pipe 2;

[0028] The sand content of the mud-water in the outer pipe 62 is monitored in real time through the sensor 40, the adding speed of the transmission pump 51 is adjusted through the PLC controller 41 (closed loop control feedback through the flowmeter 52), the power of the vacuum pump 7, the reagent adding amount of the transmission pump 51 and the opening and closing logic of the drain valve are dynamically adjusted according to the data of the sensor 40, when the sensor 40 monitors that the sand content of the mud-water exceeds the standard, the PLC controller 41 triggers the high-pressure backwashing program of the spiral spray head 63, when the data of the soil pressure gauge 42 is abnormal, the power of the vacuum pump 7 is automatically adjusted to balance the formation pressure, and the hole collapse is prevented;

[0029] The solidifying agent barrel 50 transmits the solidifying agent to the mud-water mixed flow through the transmission pump 51, and the solidifying agent is atomized and sprayed into the mud-water mixed flow through the spiral spray head 63, so that the effect of fine particle agglomeration is enhanced.

[0030] Example 2

[0031] As Figures 1-4As shown, on the basis of embodiment 1, the utility model provides a technical scheme: preferably, multistage sedimentation tank 3 includes filter water pool 30, one end of filter water pool 30 is fixedly connected with drain 31, the other end of filter water pool 30 is fixedly connected with water inlet 32, the inside of filter water pool 30 is fixedly connected with second baffle 33 and first baffle 36, first filter port 35 is formed in the side of second baffle 33, anti-overflow hole 34 is formed in the surface of second baffle 33 and first baffle 36, second baffle 33 and first baffle 36 divide filter water pool 30 into three independent first water pool 391, second water pool 390 and third water pool 39 with a part of filter water pool 30 and are sequentially arranged, first water pool 391 is sewage collection pool, second water pool 390 and third water pool 39 are primary and secondary filter pool respectively, the pool bottom of second water pool 390 is first slope structure, the pool bottom of third water pool 39 is second slope structure, the direction of first slope structure and second slope structure is opposite, the outer wall of filter water pool 30 is provided with second drain valve 393, first drain valve 394 and third drain valve 392 for emptying respectively corresponding first water pool 391, second water pool 390 and second water pool 390 in the position close to the pool bottom, and the liquid in first water pool 391, second water pool 390 and third water pool 39, and first drain valve 394 and third drain valve 392 are arranged on the side of the slope bottom of first slope structure and second slope structure respectively, the side of first baffle 36 is fixedly connected with clamping block 37, the surface of clamping block 37 is clamped with filter plate, the side of first baffle 36 is provided with second filter port 38;

[0032] Specifically, the inclined pipeline (inclination 20°) of the spiral water pipe 2 generates a cyclone of the mud water, the sand particles are centrifugally settled and slide into the first water pool 391, and the remaining mud water is sequentially filtered by the second water pool 390 and the third water pool 39, and the clean water is discharged outside through the drain 31.

[0033] The entire filter water pool 30 is divided into the first water pool 391, the second water pool 390 and the third water pool 39 which are sequentially arranged by the two baffles, wherein the first water pool 391 is used for collecting sewage, and the second water pool 390 and the third water pool 39 are used for further treating the sewage by the filter water pool 30. Since the pool bottom of the second water pool 390 and the third water pool 39 is designed as a slope structure instead of a flat bottom, when the sewage enters the second water pool 390 from the first water pool 391, most of the sludge or other impurity particles are blocked in the first water pool 391 by the filter screen, and the sludge or other impurity particles in the once-filtered sewage entering the second water pool 390 sink and settle downward due to gravity. Since there is a slope on the pool bottom, the sediment finally slowly slides to the slope bottom due to gravity, forming a sediment accumulation. Similar processes also occur in the third water pool 39. Since the sediment accumulates at the slope bottom, the cleaning efficiency is improved and the difficulty of cleaning the pool is reduced.

[0034] The first filter port 35 and the second filter port 38 are provided with snap-fit ​​blocks 37 for inserting the filter screen to perform the filtering function.

[0035] The working principle of this water-rich silty sandy soil foundation dewatering and solidification device will be explained in detail below:

[0036] like Figures 1-4 As shown, a filter screen 60 (pore size ≤ 0.5mm) is sleeved on the outside of the outer pipe 62 to intercept large particles of silt; a spiral nozzle 63 is threaded to the end of the inner pipe 61 to accelerate mud-water separation through swirling action; an annular channel is formed between the outer pipe 62 and the inner pipe 61 as a mud-water mixing and reagent reaction zone. The vacuum pump 7 is started to extract mud-water from the silt-rich sand layer through the filter screen 60 of the outer pipe 62. The mud-water is then swirled and lifted by the spiral water pipe 2 to the multi-stage sedimentation tank 3. The sand content of the mud-water in the outer pipe 62 is monitored in real time by the sensor 40, and the transmission is adjusted by the PLC controller 41. The dosing speed of pump 51 (feedback closed-loop control of flow meter 52) dynamically adjusts the power of vacuum pump 7, the dosage of agent in transfer pump 51, and the opening and closing logic of drain valve based on data from sensor 40. When sensor 40 detects that the sand content of mud and water exceeds the standard, PLC controller 41 triggers the high-pressure backwashing program of spiral nozzle 63. When the data of soil pressure gauge 42 is abnormal, the power of vacuum pump 7 is automatically adjusted to balance the formation pressure and prevent hole collapse. The curing agent tank 50 transfers the curing agent to the mud and water mixture through transfer pump 51 and atomizes it into the mud and water mixture through spiral nozzle 63 to enhance the agglomeration effect of fine particles.

[0037] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. A device for dewatering and solidifying water-rich silty sandy soil foundation, comprising a sewage discharge mechanism (1), characterized in that: The sewage discharge mechanism (1) includes a vacuum pump (7), which is equipped with a double-layer filtration and precipitation mechanism (6) through a regulating valve and a water pipe. The vacuum pump (7) is connected to the main pipe at the top of the spiral water pipe (2) through a flange channel. The spiral water pipe (2) is connected to the multi-stage sedimentation tank (3) through an inclined pipe. The other end of the vacuum pump (7) is connected to the double-layer filtration and precipitation mechanism (6) through a pipe. One end of the double-layer filtration and precipitation mechanism (6) is equipped with a solidification mechanism (5) through a pipe. The surface of the double-layer filtration and precipitation mechanism (6) is equipped with a sensor (4). The double-layer filtration rainwater mechanism (6) includes an inner tube (61), an outer tube (62) is sleeved on the outside of the inner tube (61), a filter screen (60) is sleeved on the surface of the outer tube (62), a spiral nozzle (63) is threaded to one end of the inner tube (61), and a spiral water pipe (2) is sleeved on the surface of the filter screen (60). The multi-stage sedimentation tank (3) includes a water filter tank (30). One end of the water filter tank (30) is fixedly connected to a drain outlet (31), and the other end of the water filter tank (30) is fixedly connected to a water inlet (32). Inside the water filter tank (30), a second partition (33) and a first partition (36) are fixedly connected. A first filter port (35) is opened on one side of the second partition (33), and anti-overflow holes (34) are opened on the surfaces of the second partition (33) and the first partition (36).

2. The dewatering and solidification device for water-rich silty sandy soil foundation according to claim 1, characterized in that: The second partition (33) and the first partition (36) divide the water filter (30) into three independent water tanks, namely the first water tank (391), the second water tank (390) and the third water tank (39), which are arranged in sequence and each has an opening of part of the water filter (30).

3. The dewatering and solidification device for water-rich silty sandy soil foundation according to claim 2, characterized in that: The first pool (391) is a sewage collection pool, the second pool (390) and the third pool (39) are primary and secondary filtration pools, respectively. The bottom of the second pool (390) is a first slope structure, and the bottom of the third pool (39) is a second slope structure. The orientation of the first slope structure and the second slope structure is opposite.

4. The dewatering and solidification device for water-rich silty sandy soil foundation according to claim 3, characterized in that: The outer wall of the filter tank (30) is provided with corresponding first water tank (391), second water tank (390) and second drain valve (393), first drain valve (394) and third drain valve (392) of the second water tank (390) for draining the liquid in the first water tank (391), second water tank (390) and third water tank (39). The first drain valve (394) and the third drain valve (392) are respectively located on the side of the bottom of the first slope structure and the second slope structure. A snap-fit ​​block (37) is fixedly connected to one side of the first partition (36). A filter plate is snapped onto the surface of the snap-fit ​​block (37). A second filter port (38) is opened on one side of the first partition (36).

5. The dewatering and solidification device for water-rich silty sandy soil foundation according to claim 1, characterized in that: The curing mechanism (5) includes a curing agent tank (50), one end of which is fixedly connected to a transfer pump (51), the output end of which is fixedly connected to a transfer pipe, and a flow meter (52) is installed on the transfer pipe fixedly connected to the output end of the transfer pump (51). The curing agent tank (50) is connected to one side of the inner tube (61) through the transfer pipe.

6. The dewatering and solidification device for water-rich silty sandy soil foundation according to claim 1, characterized in that: The sensing element (4) includes a sensor (40) and a soil pressure gauge (42). The sensor (40) is installed on one side of the outer tube (62), and one end of the sensor (40) is electrically connected to a PLC controller (41). The soil pressure gauge (42) is installed on one side of the outer tube (62) and close to the spiral nozzle (63).

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