Electroosmosis curing test device for dredged sludge

Abstract

The utility model discloses a dredged sludge electroosmosis solidification test device which comprises a test box (1), a voltmeter (2), an ampere meter (3) and a direct current power supply (4) which are connected through a circuit are placed on a platform of the test box (1), the dredged sludge electroosmosis solidification test device is characterized in that a pressing mechanism (7) is arranged on the test box (1), and a potential probe (8) used for being inserted into a sample is arranged at the moving end of the pressing mechanism (7); a sample groove (9) is formed in the test box (5), a plurality of drainage grooves (10) are formed in one end of the test box (5), and a drainage pipe (11) communicated with the drainage grooves (10) is arranged on one side of the sample groove (9). The device is simple in structure and convenient and fast to install, and the test efficiency is improved.

Description

Technical Field

[0001] The utility model relates to a field, in particular to a dredged sludge electroosmosis solidification test device. Background Art

[0002] The silt dredged from the riverbed or the seabed is generally called dredged silt, which is often used for land reclamation and is one of the effective ways to alleviate the current land resource shortage. Traditional methods of solidifying dredged silt include drainage consolidation and injection solidification, but both methods face many problems: 1. The water and pollutants are only transformed in form, and the content is not reduced, so the solidification effect is not ideal; 2. A large amount of solidifying agent is required for high-water content silt, and the processing cost is too high; 3. The properties of the solidified soil change qualitatively, and it is only suitable for use as a fill material, and the scope of application is limited. The electroosmotic solidification method not only realizes the reinforcement treatment of high-water content dredged sludge, but also the solidified soil can be used as foundation filler to obtain resource utilization. Therefore, many test devices for the electroosmotic solidification technology of soft soil have emerged. The existing test device includes a visual model box, a suction filter bottle and an externally configured input power supply, a voltage-stabilizing ammeter and a multimeter; the visual model box is divided into a main trough for loading the test soil and an auxiliary trough for collecting the test drainage. A drainage bottom plate with pores is installed between the main trough and the auxiliary trough. A removable partition is installed vertically inside the main trough. Two concave slides are installed on the two side walls of the main trough, a concave slide is installed between the two side slides, and a convex slider is installed on the slide. A drainage valve is installed on the two side walls of the auxiliary trough. The drainage valve is connected to the suction filter bottle through a silicone hose, and the suction filter bottle is connected to an external negative pressure vacuum pump through a silicone hose. A fixed glass plate is installed inside the auxiliary trough to isolate the auxiliary trough into two water collection spaces, and a drainage port is made at the bottom of each water collection space. The structure of the entire device is relatively complex, and it takes a lot of time to assemble, which affects the test efficiency. Utility Model Content

[0003] The utility model aims to provide a dredged sludge electroosmosis solidification test device.

[0004] The utility model has a simple structure, is easy and quick to install, and improves test efficiency.

[0005] The technical solution of the utility model is as follows: a dredged sludge electroosmosis solidification test device comprises a test box, a voltmeter, an ammeter and a DC power supply connected via a circuit are placed on a platform of the test box, a pressing mechanism is provided on the test box, and a potential probe for inserting into a sample is provided at a movable end of the pressing mechanism; a sample slot is provided in the test box, a plurality of drainage slots are provided at one end of the test box, a drainage pipe connected to the drainage slot is provided at one side of the sample slot, a bottom box is provided at the bottom of the sample slot, a plurality of bottom drainage pipes are provided at the front side of the bottom box, a plurality of bottom drainage pipes are provided at the front side of the bottom box, and the bottom box is connected to the sample slot via the bottom drainage pipes; an anode sheet and a cathode sheet are provided on the inner walls on both sides of the sample slot, respectively, and the anode sheet and the cathode sheet are connected to the voltmeter, the ammeter and the DC power supply via the circuit.

[0006] In the above-mentioned dredged sludge electroosmosis solidification test device, a drainage valve is provided at the bottom side of the drainage trough.

[0007] In the aforementioned dredged sludge electroosmosis solidification test device, the test box is composed of a plexiglass plate.

[0008] In the aforementioned dredged sludge electroosmosis solidification test device, the downward pressure mechanism includes a mechanism bracket arranged at the upper end of the test box, a main body plate is provided on the mechanism bracket, a downward pressure cylinder is provided on the main body plate, a transition plate is provided on the protruding end of the downward pressure cylinder, sliding rods are symmetrically provided on the main body plate, the sliding rods are connected to the transition plate via a fixed block, a flat plate is provided at the end of the sliding rod, a plurality of needle sleeves are evenly provided on the flat plate, and the potential probe is arranged in the needle sleeve.

[0009] In the aforementioned dredged sludge electroosmosis solidification test device, the upper end of the needle sleeve is connected to the flat plate via a nut, and the potential probe is connected to the end of the needle sleeve via a thread.

[0010] In the aforementioned dredged sludge electroosmosis solidification test device, the inner wall of the bottom box is an inclined structure.

[0011] In the aforementioned dredged sludge electroosmosis solidification test device, a sealing rubber layer is provided at a right angle of the bottom of the sample tank.

[0012] Compared with the prior art, the utility model has the following advantages:

[0013] 1. In the utility model, a voltmeter, an ammeter and a DC power supply are connected, a sample is placed in a sample tank, an anode plate and a cathode plate are installed on the inner walls on both sides of the sample tank, the two plates are connected to the voltmeter, the ammeter and the DC power supply through wires, the downward pressure mechanism is started, the potential probe is moved downward, the potential probe is inserted into the sample, and the water of the sample is discharged into the drainage trough and the bottom box through the bottom drainage pipe and the drainage pipe; the whole test device has a simple structure and is easy and quick to install. It can effectively test the soft soil electroosmosis solidification technology and improve the test efficiency.

[0014] 2. In the downward pressing mechanism, the downward pressing cylinder drives the flat plate to move downward, and the potential probe can be smoothly inserted into the sample. Compared with manual installation and insertion of the potential probe, the potential probe can be stably inserted through the downward pressing mechanism, which improves the convenience of installing the potential probe.

[0015] 3. Drainage structures are set on the sides and bottom of the sample slot of the test box. Multiple drainage structures are used to achieve rapid discharge of water during electroosmotic curing of samples, thereby speeding up the test process. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the utility model;

[0017] Figure 2 is a schematic diagram of the drainage pipe;

[0018] Figure 3 is a schematic diagram of a potential probe;

[0019] Figure 4 Schematic diagram of a flat plate.

[0020] Explanation of the marks in the accompanying drawings: 1-test box, 2-voltmeter, 3-ammeter, 4-DC power supply, 7-pressing mechanism, 8-potential probe, 9-sample slot, 10-drain slot, 11-drain pipe, 12-anode sheet, 13-cathode sheet, 16-bottom box, 17-bottom drain pipe, 18-drain valve, 71-mechanism bracket, 72-main plate, 73-pressing cylinder, 74-transition plate, 75-slide rod, 76-plane plate, 77-needle sleeve. DETAILED DESCRIPTION

[0021] The present invention will be further described below in conjunction with the accompanying drawings and embodiments, but they are not intended to limit the present invention.

[0022] Embodiment: Dredged sludge electroosmosis solidification test device, including a test box 1, as shown in the attached Figure 1 and 2As shown, the test box 1 is composed of a plexiglass plate, which can observe the state of the sludge after solidification, and is convenient for observation and recording. A voltmeter 2, an ammeter 3 and a DC power supply 4 connected by a circuit are placed on the platform of the test box 1 to effectively control the output voltage and current. The ammeter is connected in series in the circuit, and the electroosmotic energy consumption of the test is calculated based on this. A pressing mechanism 7 is installed on the test box 1, and a potential probe 8 for inserting into the sample is provided at the moving end of the pressing mechanism 7; a sample slot 9 is provided in the test box 5, and a plurality of drainage slots 10 are provided at one end of the test box 1. A drain pipe 11 connected to the drain groove 10 is provided on one side of the groove 9. The size of the sample groove is 190mm×100mm×100mm. A sealant layer is provided at the right angle of the bottom of the sample groove 9. A sealant layer is provided at the bottom of the sample groove to improve the sealing of the sample groove. A drain valve 18 is installed on the bottom side of the drain groove 10. Open the drain valve to drain the water. Place a beaker at the drain valve so that water can flow into the beaker. During the experiment, the water gathered in the drain groove will flow into the beaker through the drain hole. The test drainage volume can be obtained by weighing the mass change of the beaker.

[0023] A bottom box 16 is fixed at the bottom of the sample tank 9. The inner wall of the bottom box 16 is an inclined structure, which can better collect water flow and discharge the water flow as soon as possible. A bottom drain pipe 17 is installed on the front side of the bottom box 16. The bottom box 16 is connected with the sample tank 9 through the bottom drain pipe 17. The bottom drain pipe mainly discharges the water at the bottom of the sample tank. A valve is installed on the bottom drain pipe. Opening the valve can make the bottom box and the sample tank connected. In order to prevent the sediment from being discharged during electroosmosis drainage, a filtering structure is set at the inlet end through the drain pipe and the bottom drain pipe, and then the sediment is discharged outward; an anode sheet 12 and a cathode sheet 13 are respectively installed on the inner walls on both sides of the sample tank 9. The anode sheet 12 and the cathode sheet 13 are connected through the circuit and the voltmeter 2, the ammeter 3 and the DC power supply 4. After the sample is placed in the sample tank, the anode sheet and the cathode sheet are placed in, and the sheet body is in contact with the sample. ; The sample slot 9 is equipped with a cover plate, on which a plurality of circular holes are evenly arranged, and the potential probe 8 is set through the circular hole. The size of the cover plate is the same as that of the sample slot. There are 15 circular holes with a diameter of 1.5 mm regularly distributed on the cover plate, and two positioning lines are engraved. During the test, the cover plate is placed on the sample slot according to the position of the positioning lines. The insertion depth of the potential probe is 80 mm. For the potential of the soil, in this embodiment, only the potentials of the three probes close to the anode and the three probes close to the cathode are measured. The distance between each probe and the corresponding electrode plate is 5 mm. The average value of the potential measured by the three probes of the same cross section and the potential difference of the corresponding electrode plate are taken as the potential loss of the contact interface between the electrode plate and the soil, which is referred to as the anode potential loss or the cathode potential loss. The effective potential is the difference between the total voltage of the power supply and the anode and cathode potential losses. The cathode plate and the anode plate are evenly provided with a plurality of small holes with a diameter of 5 mm for drainage.

[0024] The pressing mechanism 7 comprises a mechanism bracket 71 arranged at the upper end of the test box 1, a main body plate 72 is mounted on the mechanism bracket 71, a pressing cylinder 73 is mounted on the main body plate 72, a transition plate 74 is connected to the extended end of the pressing cylinder 73, a sliding rod 75 is symmetrically passed through the main body plate 72, the sliding rod 75 is connected to the transition plate 74 via a fixed block, and a flat plate 76 is mounted at the end of the sliding rod 75, as shown in the attached figure. Figure 4 As shown, a plurality of needle sleeves 77 are evenly mounted on the plane plate 76, and the potential probe 8 is disposed in the needle sleeve 77. The upper end of the needle sleeve 77 is connected to the plane plate 76 via a nut, and the potential probe 8 is connected to the end of the needle sleeve 77 via a thread. Figure 3 As shown, the needle body sleeve is a hollow structure, and the upper end of the potential probe is connected to the potential measuring device through a line; in order to avoid accurately measuring the potential, an insulating sleeve is installed in the needle body sleeve.

[0025] Working principle of the utility model: In the utility model, a voltmeter, an ammeter and a DC power supply are connected, a sample is placed in a sample slot, an anode plate and a cathode plate are installed on the inner walls on both sides of the sample slot, the two plates are connected to the voltmeter, the ammeter and the DC power supply via wires, the downward pressure mechanism is started, the potential probe is moved downward, the potential probe is inserted into the sample, and the water of the sample is discharged into the drainage trough and the bottom box through the bottom drainage pipe and the drainage pipe; the entire test device has a simple structure and is easy and quick to install, and can effectively test the soft soil electroosmosis solidification technology and improve the test efficiency.

[0026] The above embodiments only express the implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. In this embodiment, up, down, left, right, front, and back only represent their relative positions and do not represent their absolute positions. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A dredged sludge electroosmosis solidification test device, comprising a test box (1), on the platform of which are placed a voltmeter (2), an ammeter (3) and a DC power supply (4) connected via a circuit, characterized in that: The test box (1) is provided with a pressing mechanism (7), and a potential probe (8) for inserting into a sample is provided at a movable end of the pressing mechanism (7); a sample slot (9) is provided in the test box (5), a plurality of drainage slots (10) are provided at one end of the test box (1), a drainage pipe (11) connected to the drainage slot (10) is provided at one side of the sample slot (9), a bottom box (16) is provided at the bottom of the sample slot (9), a plurality of bottom drainage pipes (17) are provided at the front side of the bottom box (16), and the bottom box (16) is connected to the sample slot (9) via the bottom drainage pipes (17); an anode sheet (12) and a cathode sheet (13) are respectively provided on the inner walls of both sides of the sample slot (9), and the anode sheet (12) and the cathode sheet (13) are connected to a voltmeter (2), an ammeter (3) and a DC power supply (4) via a circuit.

2. The dredged sludge electroosmosis solidification test device according to claim 1, characterized in that: A drainage valve (18) is provided on the bottom side of the drainage trough (10).

3. The dredged sludge electroosmosis solidification test device according to claim 1, characterized in that: The test box (1) is composed of organic glass plates.

4. The dredged sludge electroosmosis solidification test device according to claim 1, characterized in that: The pressing mechanism (7) comprises a mechanism support (71) arranged at the upper end of the test box (1), a main body plate (72) is arranged on the mechanism support (71), a pressing cylinder (73) is arranged on the main body plate (72), a transition plate (74) is arranged at the protruding end of the pressing cylinder (73), sliding rods (75) are symmetrically arranged on the main body plate (72), the sliding rods (75) are connected to the transition plate (74) via a fixed block, a flat plate (76) is arranged at the end of the sliding rod (75), a plurality of needle sleeves (77) are evenly arranged on the flat plate (76), and the potential probe (8) is arranged in the needle sleeve (77).

5. The dredged sludge electroosmosis solidification test device according to claim 4, characterized in that: The upper end of the needle sleeve (77) is connected to the plane plate (76) via a nut, and the potential probe (8) is connected to the end of the needle sleeve (77) via a thread.

6. The dredged sludge electroosmosis solidification test device according to claim 1, characterized in that: The inner wall of the bottom box (16) is an inclined structure.

7. The dredged sludge electroosmosis solidification test device according to claim 1, characterized in that: The bottom right angle of the sample groove (9) is provided with a sealing rubber layer.

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