Recyclable water indoor flushing equipment for marine facies sludge improved soil and use method of recyclable water indoor flushing equipment

Abstract

The invention relates to the technical field of marine engineering material scouring resistance test equipment, in particular to recyclable water indoor scouring equipment for marine facies sludge improved soil and a use method of the recyclable water indoor scouring equipment. A filter screen is arranged on the left side of the water tank; a washing table is mounted on the right side of the upper part of the water tank; a fixing device is mounted on the left side of the washing table; a gate is arranged on the right side of the fixing device, and a flow velocity monitoring device is arranged at the bottom; a water inlet tank is arranged on the right side of the gate; a detachable filter screen is arranged above the water return port, and the lower part of the water return port is communicated with the water tank; the water inlet pipe is mounted on the water inlet pool, and the water return pipe is mounted on the side surface of the water tank and connected with the water tank through a water pump; the flow velocity monitoring device is arranged at the gate, so that the flow velocity can be monitored, and the scouring height is controlled through the lifting height of the gate; the arranged water return port can prevent water from overflowing; the arranged detachable filter screen can achieve the water purification effect.

Description

Technical Field

[0001] The invention relates to the technical field of scour resistance test equipment for marine engineering materials, and in particular to a circulating water indoor scour equipment for marine silt improved soil and a use method thereof. Background Art

[0002] my country has a long coastline with deep soft soil layers. With the increasing number of projects such as land reclamation, port and waterway construction, and water conservancy construction in coastal areas in recent years, there are more and more solidification tests for marine silt, among which the anti-scouring capacity test of marine silt solidification specimens is often carried out. However, the traditional anti-scouring capacity test of marine silt solidification specimens consumes a lot of water during the process, and it is difficult to accurately control the scouring force and water flow scouring height, resulting in low test efficiency and serious waste of water resources.

[0003] The present invention provides a detachable filter screen to achieve water purification. Too much sediment may accumulate in the flushing equipment, thereby affecting the test results. The sediment may also clog the water pump and cause damage to the water pump. Compared with the test system disclosed in CN202111438831.3 that simulates the scouring and erosion of the test piece by water flow, the present invention has better water purification effect, thereby preventing sediment accumulation during the test and the problem of excessive sediment clogging the water pump.

[0004] The present invention is able to achieve the effect of controlling the height of water flow scouring by setting a pullable gate. Traditional scouring equipment cannot simulate the scouring height and strength of water flow on the test piece in the natural environment. In the process of conducting engineering tests in areas near the ocean or rivers, the anti-scouring ability of the test piece at different heights needs to be studied. Compared with a highway roadbed filler anti-scouring performance test device and method disclosed in CN202110054153.4, the present invention can control the scouring height of water flow and simulate the scouring scenes of water flows of different heights in the natural environment to the greatest extent. The present invention can not only be used for seawater scouring tests, but also can be used to simulate scouring tests in natural environments such as rivers and lakes.

[0005] The present invention sets a flow rate monitoring device at the bottom of the gate, so as to realize the control and recording of the flow rate. Compared with the concrete specimen scouring test device disclosed in CN202122976252.6, the present invention has the functions of flow rate control and recording, and can carry out scouring tests with different flow rates.

[0006] The present invention has a water circulation system, which includes a water tank, a water inlet pipe, a water return pipe and a water pump, so as to achieve the effects of water circulation and energy saving and emission reduction. Compared with the test method disclosed in CN202111004069.8 for simulating the scouring of solidified soil during the construction of offshore wind power piles, the present invention can circulate water, thereby achieving the effect of energy saving and emission reduction. Summary of the invention

[0007] In view of this, the present invention provides a recyclable water indoor flushing equipment and a method of use for marine silt improved soil, so as to solve the problems of serious water waste and inability to accurately control the flushing force and flushing height of traditional specimen flushing equipment when flushing specimens, thereby improving the efficiency, accuracy and environmental protection of the test.

[0008] The present invention provides a recyclable water indoor flushing device for marine silt improved soil and a use method thereof, specifically comprising: a water circulation system; a flushing system; the water circulation system comprises a water tank, a water inlet pipe, a water return pipe and a water pump; the flushing system is installed on the water tank; a pullable gate is arranged on the left front side of the flushing system, and the gate is pulled up and down by a slot; a specimen fixing flushing platform is arranged on the left side of the gate; a specimen fixing device is arranged above the specimen fixing flushing platform; a flushing platform water inlet pool is arranged on the right side of the gate, and the water inlet pool is connected to the specimen fixing flushing platform and blocked by the gate; a flow rate monitoring device is arranged at the bottom of the gate; a scale is arranged on the side of the gate; a water return port is arranged on the right side of the flushing platform water inlet pool; the water return port is communicated with the water tank; the water inlet pipe is arranged on the water inlet pool; the water return pipe is arranged on the side of the water tank; the water inlet pipe and the water return pipe are connected through an external water pump.

[0009] Furthermore, a detachable filter screen is arranged on the leftmost side of the water tank, and the right end of the filter screen is connected to the specimen fixing flushing table.

[0010] Furthermore, the width of the specimen fixing flushing platform is at least twice the diameter of the specimen.

[0011] Furthermore, a round hole handle is provided on the gate; and a scale is installed at the lower left side of the gate.

[0012] Furthermore, a rubber water stop strip is provided on the inner side of the slot.

[0013] Furthermore, the specimen fixing device consists of a handle, a beam with a nut and a bolt; the handle is installed on the bolt; the internal thread depth of the beam with a nut is the thickness of the beam; a soft sponge pad is provided at the bottom of the bolt; and the bolt can rotate in the beam with a nut.

[0014] Furthermore, the right side of the water inlet is a return water inlet, a baffle is arranged on the left side of the return water inlet, and its height is slightly lower than the height of the water inlet; a removable filter screen is arranged above the return water inlet and its installation height is slightly lower than the baffle height; the bottom of the return water inlet is connected to the water sink.

[0015] Furthermore, the selection index of the water pump is the flow rate Q1. To ensure that the flow rate of the water pump meets the test requirements, the design flow rate Q2 needs to be calculated based on the design flushing flow rate V of the test plan. When selecting the water pump, it is necessary to ensure that Q1>Q2. The calculation formula for the design flow rate Q2 is:

[0016] Q2=V×A

[0017] A=H×L

[0018] Where Q2 represents the design flow rate of the test scheme, V represents the design flushing velocity, A represents the cross-sectional area through which the water flows after the gate is raised, H represents the gate raising height, and L represents the gate width.

[0019] The invention provides a circulating water indoor flushing device and a method for using the marine silt improved soil, which has the following beneficial effects:

[0020] The present invention can monitor the flow velocity of water by installing a flow velocity monitoring device at the bottom of the gate.

[0021] The present invention can conveniently control the flushing force and flushing height by lifting the gate and reading the scale reading.

[0022] The invention provides a round hole handle on the gate, thereby facilitating lifting the gate.

[0023] The present invention can prevent water from seeping out from the side gap of the gate by arranging a rubber water stop strip on the inner side of the clamping groove.

[0024] The present invention can prevent the test piece from being crushed when the test piece is fixed by installing a soft sponge pad at the bottom of the bolt in the test piece fixing device.

[0025] The present invention can accurately control the flushing force and flushing height through the linkage of the gate, the scale and the flow rate monitoring device at the bottom of the gate.

[0026] The present invention can recover the excess water in the water inlet pool into the water tank by installing a baffle plate lower than the water inlet pool on the left side of the water return port, thereby preventing the water flow in the water inlet pool from overflowing.

[0027] The present invention can filter soil particles generated by scouring the test piece through the detachable filter screens arranged on the water trough and the return water outlet, thereby achieving the effect of purifying water. The detachable filter screen can be flexibly replaced with filter screens of different mesh sizes according to the size of the soil particles and the filter screen surface blocked by the soil particles can be quickly replaced, thereby achieving the purpose of efficient testing. The installation height of the detachable filter screen on the return water outlet is slightly lower than the baffle, thereby preventing silt accumulation and sand from flowing back into the water pool.

[0028] The water inlet pipe and the water return pipe of the present invention are connected by a water pump, and the filtered clean water can be pumped out from the bottom water tank and input into the water inlet pipe through the water pump, and then output from the water inlet pipe to the water inlet pool of the flushing station, thereby realizing the recycling of water and achieving the effect of environmental protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solution of the embodiment of the present invention, the following is a brief introduction to the drawings of the embodiment:

[0030] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present invention.

[0031] Figure 2 It is a schematic structural diagram of a water tank according to an embodiment of the present invention.

[0032] Figure 3 It is a schematic cross-sectional structural diagram of a flushing system according to an embodiment of the present invention.

[0033] Figure 4 It is a schematic structural diagram of a test piece fixing device according to an embodiment of the present invention.

[0034] Figure 5 It is a schematic structural diagram of a card slot according to an embodiment of the present invention.

[0035] Reference numerals list 1. Sink; 2. Flushing system; 3. Specimen fixing device; 4. Flow rate monitoring device; 5. Return pipe; 6. Inlet pipe; 7. Specimen fixing flushing table; 8. Inlet pool; 9. Return port; 10. Water pump; 11. Removable filter on the sink; 21. Slot; 211. Rubber water stop; 22. Gate; 23. Baffle; 24. Removable filter on the return port; 25. Scale; 26. Round hole handle; 31. Handle; 32. Beam with nut; 33. Bolt; 34. Soft sponge pad. DETAILED DESCRIPTION

[0036] In order to make the purpose, scheme and advantages of the technical solution of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings of specific embodiments of the present invention.

[0037] Example 1

[0038] like Figures 1 to 5As shown: The present invention provides a recyclable water indoor flushing device for marine silt improved soil and a method of using the device, including a flushing system; a water circulation system; the water circulation system includes a water tank, a water inlet pipe, a water return pipe and a water pump; the flushing system is installed on the water tank; a pullable gate is arranged on the left front side of the flushing system, and the gate is pulled up and down through a slot; a rubber water stop is installed on the inner side of the slot to prevent water from flowing out of the side seam of the gate; the left side of the gate is a specimen fixing flushing platform; the specimen fixing A specimen fixing device is installed above the flushing station; the flushing station water inlet pool is on the right side of the gate, and the water inlet pool is connected to the specimen fixing flushing station and blocked by the gate; a flow rate monitoring device is installed at the bottom of the gate; a scale is installed on the side of the gate; a return water port is provided on the right side of the flushing station water inlet pool; the return water port is connected to the water tank; the water inlet pipe is installed on the water inlet pool; the return water pipe is installed on the side of the water tank; the water inlet pipe and the return water pipe are connected through an external water pump, thereby forming a water circulation system.

[0039] A detachable filter screen 11 is installed on the left side of the water tank 1, and the right side of the filter screen is connected to the flushing system 2 for filtering soil particles in the water after flushing the test piece. The filtered water will flow back to the water tank 1, thereby realizing water recycling.

[0040] A gate 22 is provided at the front left side of the flushing system 2, and the gate 22 is fixed to the right side of the specimen fixed flushing platform 7 through a slot 21. The flushing speed and flushing height of the water flow can be controlled by pulling the gate 22. A round hole handle 26 is installed on the gate 22 to facilitate pulling the gate. The left side of the gate 22 is the specimen fixed flushing platform 7, which is used to fix and flush the specimen. The right side of the gate 22 is the water inlet pool 8, which is connected to the specimen fixed flushing platform 7 and blocked by the gate 22. The right side of the water inlet pool 8 is the return A baffle 23 is arranged on the left front side of the water inlet 9 and the return water inlet 9, and the height thereof is slightly lower than the height of the water inlet pool 8. When the water level of the water inlet pool 8 is too high, the excess water will flow from the return water inlet 9 to the water tank 1, thereby preventing the water from overflowing from the water inlet pool 8. A detachable filter screen 24 is arranged above the return water inlet 9, and the installation height thereof is slightly lower than the baffle 23, thereby realizing sediment filtration and preventing the sand-containing water from flowing back into the water inlet pool 8 due to the clogging of the detachable filter screen 24 by sediment. The bottom of the return water inlet 9 is connected to the water tank 1, and is used to return the excess water to the water tank 1.

[0041] The specimen fixing device 3 consists of a handle 31, a crossbeam 32 with a nut and a bolt 33; the handle 31 is installed on the bolt 33; a soft sponge pad 34 is installed at the bottom of the bolt to prevent the specimen from being crushed when fixing the specimen; the internal thread depth of the crossbeam 32 with a nut is the thickness of the crossbeam; the bolt 33 can rotate in the crossbeam 32 with a nut, and is used to squeeze and fix the specimen to the specimen fixing flushing table 7.

[0042] The specific usage and function of this embodiment are as follows:

[0043] Before the test, the operator carefully checks the test device to ensure that the components are intact and tightly connected, and is ready for the test. Close the gate (22) to completely block the water flow channel, turn the handle (31) with both hands, and allow the bottom of the thick bolt (33) to press the test piece on the flushing table (7). Open the flow rate detection device (4) at the bottom of the gate (22), and slowly fill the water inlet pool (8) with water to 1.5 times the volume. The excess water flows into the water tank (1) through the return port (9) for temporary storage. According to the test plan, accurately lift the gate (22) to the target height, release water to flush the test piece, and start the external water pump (10) at the same time to start the flushing test. After the water carrying soil particles flushes the specimen, it is first filtered by the removable filter (11) and then flows into the water tank (1). The water pump (10) then pumps water back to the water inlet pool (8) through the return pipe (5) and the water inlet pipe (6). The excess water is filtered by the removable filter (24) and then flows back to the water tank (1) to achieve recycling. Pay attention to the status of the removable filter (11) and (24) throughout the process. If the accumulation of soil particles causes the water flow to be blocked, immediately replace the filter with the same specification; if the water is turbid, replace it with a filter with a larger mesh. During flushing, the change in the lifting height of the gate (22) causes the water flow to change speed, and the flow rate detection device (4) continuously captures and records. After reaching the predetermined conditions, the external water pump (10) and the gate (22) are turned off in turn, the specimen fixing device (3) is loosened to remove the specimen, record the data, empty the water tank (1), and clean the removable filter (11) and (24) to prepare for the next test.

[0044] Example 2

[0045] The difference between Example 2 and Example 1 is that Example 2 eliminates the provision of detachable filter screens (11) and (24).

[0046] The specific usage and function of this embodiment are as follows:

[0047] In the present invention, when the marine silt solidification specimen is flushed with seawater, before the test is started, the gate (22) is first closed to ensure that the specimen fixing flushing platform (7) is isolated from the water flow of the water inlet pool (8). Slowly turn the handle (31) with both hands to allow the bottom of the bolt (33) to press the specimen onto the flushing platform (7). Remove the removable filter screen (11) above the water tank (1) and the removable filter screen (24) on the return water port (9) to check the overall status of the equipment. Open the flow rate detection device (4) at the bottom of the gate (22) to ensure its normal monitoring. Pour water into the water inlet pool (8) until the water volume reaches 1.5 times that of the water, and the excess water flows into the water tank (1) through the return water port (9) for temporary storage.

[0048] After the water injection is completed, the gate (22) is lifted to the target height according to the plan, and the water is instantly released to flush the test piece, and the external water pump (10) is started at the same time to drive the seawater circulation. The seawater flushes the test piece and flows into the water tank (1). The water pump (10) draws out the seawater in the water tank (1) and returns it to the water pool (8) through the return pipe (5) and the inlet pipe (6). The excess seawater flows into the water tank (1) again through the return port (9), thereby realizing the recycling of seawater.

[0049] When the test reaches a predetermined flushing time or meets the termination condition, the external water pump (10) and the gate (22) are closed in sequence, the specimen fixing device (3) is released, the specimen is taken out and the data is recorded in detail, and the water tank (1) is emptied for the next test.

[0050] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A recyclable water indoor flushing device for marine silt improved soil, comprising a water tank (1); a flushing platform (2) is provided on the upper right side of the water tank (1); a test piece fixing device (3) is installed on the upper left side of the flushing platform (2); a pullable gate is provided on the flushing platform (2), and a flow rate monitoring device (4) is provided at the bottom end of the gate; an inlet pipe (6) is provided above the water inlet pool (8) of the flushing platform, and an outlet pipe (5) is provided on the side of the bottom of the water tank (1); the inlet pipe (6) and the outlet pipe (5) are connected through a water pump (10) to form a set of water circulation devices.

2. A circulating water indoor flushing device for improving marine silt soil as claimed in claim 1, characterized in that A detachable filter screen (11) is arranged on the left side of the water tank (1), and the right side of the filter screen is connected to the flushing station (2).

3. A circulating water indoor flushing device for improving marine silt soil as claimed in claim 1, characterized in that A gate (22) is provided at the front left side of the flushing platform (2), and the gate (22) is fixed to both sides of the flushing platform device through a clamping slot (21); the left side of the gate (22) is a specimen fixed flushing platform (7); the right side of the gate (22) is a flushing platform water inlet pool (8), and the flushing platform water inlet pool (8) is connected to the specimen fixed flushing platform (7) and blocked by the gate (22); the right side of the water inlet pool (8) is a return water inlet (9), and a baffle (23) is provided at the left front side of the return water inlet (9), and the height is slightly lower than that of the water inlet pool (8); a detachable filter screen (24) is provided above the return water inlet (9), and the bottom of the return water inlet (9) is connected to the water tank (1).

4. A circulating water indoor flushing device for improving marine silt soil as claimed in claim 1, characterized in that The specimen fixing device (3) is composed of a handle (31), a crossbeam (32) with a nut, and a thick bolt (33); the handle (31) is mounted on the thick bolt (33); the internal thread depth of the crossbeam (32) with a nut is equal to the thickness of the crossbeam; and the thick bolt (33) can rotate inside the crossbeam (32) with a nut.

5. A method for using a circulating water indoor flushing device for improving marine silt soil, characterized in that : It includes the following steps: S1. Comprehensively check the initial status of each component in the test device to ensure that it functions properly; S2. Close the gate (22) to block the water flow channel between the specimen fixing flushing station (7) and the water inlet pool (8), twist the handle (31), and squeeze and fix the specimen on the specimen flushing station (7) with the bottom of the thick bolt (33) of the specimen fixing device (3); S3. Open the gate (22) and the flow rate detection device (4) at the bottom, and slowly add water to the water inlet pool (8) until the water volume reaches 1.5 times the volume of the water inlet pool, and the excess water flows into the water tank (1) through the return port (9) for temporary storage; S4. According to the test plan, the gate (22) is pulled to the target height, the water flow in the water inlet pool (8) is released to impact the test piece, and the external water pump (10) is started to inject power into the circulating water flow to start flushing; S5. After the water flows through the test piece, the water carrying the soil particles is filtered through the detachable filter screen (11) on the water tank (1) and then flows into the water tank (1); the water pump (10) draws the water in the water tank (1) through the return pipe (5) and continuously inputs the water into the water inlet pool (8) through the water inlet pipe (6); at the same time, the excess water in the water inlet pool (8) is filtered through the detachable filter screen (24) above the return port (9) and flows into the water tank (1) below, and the cycle repeats, thereby realizing the recycling of water flow; S6. During the test, attention should be paid to the filtering efficiency of the filters (11) and (24). If soil particles accumulate and the water flow is blocked, replace the filter with the same specification immediately. If the water turbidity is high, replace it with a larger mesh filter to strengthen the filtration. S7. As the scouring test progresses, the flow rate detection device (4) continuously captures and accurately records data, so that the operator can understand the scouring parameters of the specimen and facilitate subsequent research; S8. After reaching the predetermined flushing time or termination condition, the external water pump (10) and the gate (22) are shut down in sequence, the specimen fixing device (3) is loosened, the specimen is taken out, and the test data is recorded in detail. Finally, the water tank (1) is emptied, and the filter screens (11) and (24) are disassembled and cleaned to prepare for the next test.

Images