Multifunctional rapid dehydration test device for engineering waste mud

Abstract

The utility model discloses a multifunctional rapid dehydration test device for engineering waste mud. The multifunctional rapid dehydration test device comprises a sealing cylinder structure, a drainage system, an air compressor and a data acquisition system, the sealing cylinder structure comprises a top plate, an acrylic cover plate, an upper sleeve, a lower sleeve and a bottom plate which are sequentially connected from top to bottom; the drainage system comprises a drainage pipe assembly, a water storage barrel and a vacuum pump; the air compressor is mounted on the top plate; the data acquisition system comprises an acquisition panel and an environmental data acquisition assembly, the environmental data acquisition assembly is electrically connected with the acquisition panel, and the environmental data acquisition assembly is used for acquiring pore water pressure, settlement displacement and temperature of silt in the sealed cavity; an ultrasonic vibration assembly and a heating element are installed on the lower sleeve. The slurry dehydration device can realize efficient dehydration treatment of slurry, ensures the precision and reliability of test data, improves the test efficiency, and is suitable for different types of slurry and various test working conditions.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of slurry dewatering, particularly to a multifunctional rapid dewatering test device for engineering waste slurry. BACKGROUND

[0002] In the field of geotechnical testing, test slurry dewatering equipment is used to simulate the dewatering process of slurry. Existing test devices have single functions, usually only realizing vacuum preloading or simple pressurization treatment, with low dewatering efficiency and poor adaptability, especially when dealing with high-water-content slurry. These limitations make the test equipment less applicable under various test conditions, failing to meet the needs of modern tests for multifunctionality, precise control, and efficient dewatering.

[0003] Current test devices have low automation, requiring manual operation during the test process, which increases operational complexity and is prone to human error, resulting in insufficient data accuracy. In addition, the device lacks real-time monitoring of key parameters such as pore water pressure, temperature, and settlement, affecting the accuracy and repeatability of test data.

[0004] The stack loading and pressurization function applies external air pressure through an air compressor, simulating the pressure conditions under stack loading conditions, complementing vacuum preloading, and effectively enhancing the dewatering effect of slurry, especially in tests requiring external force pressurization. However, many traditional devices still do not integrate this function, resulting in limited dewatering effect and difficulty in meeting the requirements of complex tests.

[0005] At the same time, ultrasonic vibration and heating treatment technology has been proven to effectively accelerate the slurry dewatering process, especially in the treatment of high-water-content slurry, by accelerating water separation and evaporation through vibration and temperature rise, significantly improving dewatering speed. However, the integration of these technologies in existing test devices is low, failing to fully utilize their advantages.

[0006] Therefore, a multifunctional rapid dewatering test device for engineering waste slurry is proposed. SUMMARY

[0007] The utility model aims to provide a multifunctional rapid dewatering test device for engineering waste slurry, aiming to solve or improve at least one of the above technical problems.

[0008] To achieve the above-mentioned purpose, the utility model provides the following scheme: the utility model provides a multifunctional rapid dewatering test device for engineering waste slurry, comprising:

[0009] The sealed cylinder structure comprises a top plate, an acrylic cover plate, an upper sleeve, a lower sleeve and a bottom plate connected in sequence from top to bottom; the top plate, the acrylic cover plate, the upper sleeve, the lower sleeve and the bottom plate enclose a sealed cavity; the top plate and the bottom plate are detachably connected through fasteners;

[0010] The drainage system comprises a drainage pipe assembly, a water storage bucket and a vacuum pump; one end of the drainage pipe assembly extends into the inner cavity of the lower sleeve, and the other end is in communication with the water storage bucket; the vacuum pump is in communication with the water storage bucket;

[0011] The air compressor is connected to the top plate and is in communication with the sealed cavity.

[0012] The data acquisition system comprises an acquisition panel and an environmental data acquisition assembly; the environmental data acquisition assembly is electrically connected to the acquisition panel; the environmental data acquisition assembly is used for acquiring the pore water pressure, the settlement displacement and the temperature of the silt in the sealed cavity.

[0013] The lower sleeve is provided with an ultrasonic vibration assembly and a heating element.

[0014] The environmental data acquisition assembly comprises a pore water pressure sensor, a displacement sensor, a vacuum sensor and a temperature sensor; the detection ends of the vacuum sensor, the pore water pressure sensor and the temperature sensor extend into the inner cavity of the lower sleeve; the displacement sensor is installed at the bottom of the acrylic cover plate; the vacuum sensor, the pore water pressure sensor, the displacement sensor and the temperature sensor are electrically connected to the acquisition panel.

[0015] The drainage pipe assembly comprises a drainage plate and a vacuum drainage pipe; the drainage plate is installed in the inner cavity of the lower sleeve; the drainage plate is provided with a geotextile; one end of the drainage plate is detachably connected to the vacuum drainage pipe through a drainage plate clamp; the vacuum drainage pipe is fixedly connected to the water storage bucket; the drainage plate, the vacuum drainage pipe and the water storage bucket are in communication with each other.

[0016] The fastener comprises four axial clamping members installed on the bottom plate; the top of each axial clamping member is provided with an axial clamping top plate screw rod; the bottom of each axial clamping member is provided with an axial clamping base screw rod.

[0017] Four top plate bolt holes are formed in the top plate, four axial clamping top plate screws respectively pass through the four top plate bolt holes, and the axial clamping top plate screws are in threaded connection with the top plate bolt holes; nuts are in threaded connection with the axial clamping top plate screws, and the nuts are in abutment with the top surface of the top plate.

[0018] Four bottom plate bolt holes are formed in the bottom plate, four bases are arranged at the bottom of the bottom plate, four of the bases are respectively located directly below the four bottom plate bolt holes, and the axial clamping base screw passes through the bottom plate bolt hole and is in threaded connection with the base.

[0019] According to the multifunctional rapid dehydration test device for engineering waste mud provided by the utility model, the heating element comprises a heating plate sleeved outside the lower sleeve, the heating plate is fixedly installed on the outer wall of the lower sleeve through a spring, and intervals are arranged between opposite ends of the heating plate;

[0020] The ultrasonic vibration assembly comprises an ultrasonic transmitter and a mounting ring; the ultrasonic transmitter is mounted on the outer wall of the lower sleeve through the mounting ring; and the mounting ring is located in the intervals.

[0021] According to the multifunctional rapid dehydration test device for engineering waste mud provided by the utility model, a first groove is formed in the top of the lower sleeve, and an annular protrusion is arranged at the bottom of the lower sleeve; a first protrusion is arranged at the top of the upper sleeve, and a second protrusion is arranged at the bottom of the upper sleeve; a second groove is formed in the bottom of the acrylic cover plate, and an annular groove is formed in the top surface of the bottom plate.

[0022] The first protrusion is clamped with the second groove, the second protrusion is clamped with the first groove, and the annular protrusion is clamped with the annular groove.

[0023] According to the multifunctional rapid dehydration test device for engineering waste mud provided by the utility model, a first handle is mounted on the outer wall of the upper sleeve, a second handle is mounted on the outer wall of the lower sleeve, and a third handle is mounted on the top plate.

[0024] According to the multifunctional rapid dehydration test device for engineering waste mud provided by the utility model, air compressor access inlets and displacement sensor wire entry holes are formed in the top plate, the transmission line of the displacement sensor extends out of the displacement sensor wire entry hole, and the transmission line is electrically connected with the acquisition panel;

[0025] Drainage clamp plate interfaces, temperature access holes, vacuum degree access holes and pore water pressure sensor access holes are formed in the outer wall of the lower sleeve; the detection end of the vacuum sensor penetrates through the vacuum degree access hole, the detection end of the pore water pressure sensor penetrates through the pore water pressure sensor access hole, and the detection end of the temperature sensor penetrates through the temperature access hole.

[0026] The utility model discloses the following technical effects:

[0027] The utility model discloses a ultrasonic vibration component and heating element can realize the ultrasonic vibration and heating operation of discarded silt, through ultrasonic vibration, the separation of moisture and slurry is accelerated, heating promotes moisture evaporation, through air compressor control heaped load value, heaped load pressurization increases dehydration pressure, monitors the change of pore water pressure of different radial position hole, through vacuum pump connection water storage bucket and drain pipe component, realizes vacuum preloading and extracts moisture, through a plurality of physical and chemical treatment technology, accelerates the dehydration process of discarded slurry, through ultrasonic wave, heating and vacuum drainage etc. mode fast reduce slurry volume, reduce moisture content, can realize the efficient dehydration treatment of slurry, is applicable to different types slurry and various test conditions;

[0028] The utility model discloses through environmental data acquisition component can real -time acquisition sealed cavity in silt's pore water pressure, settlement displacement and temperature's key parameter, has realized the accurate control of test process, and data acquisition system has reduced human operation error, has guaranteed the precision and reliability of test data, has improved test efficiency;

[0029] The utility model discloses through integrated vacuum preloading, heaped load pressurization, ultrasonic vibration and heating treatment technology, and test personnel can flexibly select different dehydration mode or combination, adapts to various test demand;This multifunctional design has simplified the use of test equipment, reduced the necessity of replacing device for many times;

[0030] The utility model discloses simple structure, easy to install and operation, function various and processing effect are obvious and the like advantage, can effectively reduce waste slurry processing difficulty and cost, reduce the negative influence to the environment, is applicable to the slurry dehydration test under various laboratory conditions. ACCURACY

[0031] In order to more clearly illustrate the technical scheme in the embodiment of the utility model or prior art, the following will be to the drawing needed to be used in the embodiment of the utility model is briefly introduced, obviously, the drawing in the following description only some embodiments of the utility model, for those skilled in the art, under the premise of not paying creative labor, still can obtain other drawings according to these drawings.

[0032] Figure 1 It is the structure schematic diagram of the utility model;

[0033] Figure 2 It is the top view of the utility model;

[0034] Figure 3 It is the structure schematic diagram of the upper sleeve in the utility model;

[0035] Figure 4It is the structure schematic view of the lower sleeve in the utility model.

[0036] Figure 5 It is the structure schematic view of the bottom plate in the utility model.

[0037] Figure 6 It is the installation schematic view of the upper sleeve and the lower sleeve in the utility model.

[0038] Among them, 1, displacement sensor inlet hole;2, second groove;3, nut;4, top plate;5, acrylic cover plate;6, axial clamping component;7, lower sleeve;8, drainage plate clamp;9, vacuum drainage pipe;10, annular protrusion;11, annular groove;12, bottom plate;13, axial clamping base screw;14, base;15, drainage clamp interface;16, temperature access hole;17, vacuum degree access hole;18, drainage plate;19, pore water pressure sensor access hole;20, first groove;21, second protrusion;22, upper sleeve;23, axial clamping top plate screw;24, third handle;25, top plate bolt hole;26, air compressor;27, water storage bucket;28, vacuum pump;29, air compressor inlet;30, acquisition panel;31, second handle;32, mounting ring;33, ultrasonic transmitter;34, heating plate;35, first handle;36, first protrusion;37, bottom plate bolt hole. DETAILED DESCRIPTION

[0039] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0040] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the utility model will be further described in detail below with reference to the drawings and specific embodiments.

[0041] Embodiment 1

[0042] With reference to Figures 1-6 The utility model provides engineering waste mud multifunctional rapid dewatering test device, including:

[0043] The sealing cylinder structure includes the top plate 4, the acrylic cover plate 5, the upper sleeve 22, the lower sleeve 7 and the bottom plate 12 connected in sequence from top to bottom, and the top plate 4, the acrylic cover plate 5, the upper sleeve 22, the lower sleeve 7 and the bottom plate 12 form a sealed cavity;The top plate 4 and the bottom plate 12 are detachably connected by fasteners.

[0044] A drainage system, the drainage system comprises a drainage pipe assembly, a water storage barrel 27 and a vacuum pump 28; one end of the drainage pipe assembly extends into the inner cavity of the lower sleeve 7, and the other end is in communication with the water storage barrel 27; the vacuum pump 28 is in communication with the water storage barrel 27;

[0045] An air compressor 26, the air compressor 26 is connected to the top plate 4, and the air compressor 26 is in communication with the sealed cavity;

[0046] A data acquisition system, the data acquisition system comprises an acquisition panel 30 and an environmental data acquisition assembly, the environmental data acquisition assembly is electrically connected with the acquisition panel 30, and the environmental data acquisition assembly is used for acquiring the pore water pressure, the settlement displacement and the temperature of the silt in the sealed cavity;

[0047] Wherein, the lower sleeve 7 is provided with an ultrasonic vibration assembly and a heating element;

[0048] In this way, the ultrasonic vibration assembly and the heating element can realize ultrasonic vibration and heating operation of the waste silt, water and mud are separated by ultrasonic vibration, water evaporation is promoted by heating, the air compressor 26 controls the heaped load value, the dehydration pressure is increased by heaped load and pressure, the change of the pore water pressure at different radial positions is monitored, the water storage barrel 27 and the drainage pipe assembly are connected through the vacuum pump 28, vacuum preloading is realized to extract water, the dehydration process of the waste mud is accelerated through multiple physical and chemical treatment technologies, the mud volume is quickly reduced and the water content is reduced through ultrasonic vibration, heating and vacuum drainage, efficient dehydration treatment of the mud can be realized, and the mud dehydration test is suitable for different types of mud and various test conditions;

[0049] The environmental data acquisition assembly can acquire the key parameters of the pore water pressure, the settlement displacement and the temperature of the silt in the sealed cavity in real time, accurate control of the test process is realized, the data acquisition system reduces human operation errors, the accuracy and reliability of test data are ensured, and the test efficiency is improved;

[0050] The integrated vacuum preloading, heaped load and pressure, ultrasonic vibration and heating treatment technology can be flexibly selected by the test personnel, and is suitable for various test requirements; the multifunctional design simplifies the use of the test equipment and reduces the necessity of replacing the device multiple times;

[0051] The utility model has the advantages of simple structure, easy installation and operation, various functions and remarkable treatment effect, can effectively reduce the difficulty and cost of waste mud treatment, reduce the negative impact on the environment, and is suitable for mud dehydration test under various laboratory conditions.

[0052] Further optimization scheme, the environmental data acquisition assembly includes a pore water pressure sensor, a displacement sensor, a vacuum sensor and a temperature sensor; the detection end of the vacuum sensor, the pore water pressure sensor and the temperature sensor extends into the inner cavity of the lower sleeve 7, the displacement sensor is installed at the bottom of the acrylic cover plate 5, and the vacuum sensor, the pore water pressure sensor, the displacement sensor and the temperature sensor are electrically connected with the acquisition panel 30; in the embodiment, the displacement sensor is a laser sensor, which is used for monitoring the sedimentation of the mud in real time.

[0053] Further optimization scheme, the drainage pipe assembly includes a drainage plate 18 and a vacuum drainage pipe 9, the drainage plate 18 is installed in the inner cavity of the lower sleeve 7, and the drainage plate 18 is provided with a geotextile; one end of the drainage plate 18 is detachably connected with the vacuum drainage pipe 9 through the drainage plate clamp 8, the vacuum drainage pipe 9 is fixedly connected with the water storage bucket 27, and the drainage plate 18, the vacuum drainage pipe 9 and the water storage bucket 27 are in communication.

[0054] Further optimization scheme, the fastener includes four axial clamping members 6 installed on the bottom plate 12, the top of the axial clamping member 6 is provided with an axial clamping top plate screw 23, and the bottom is provided with an axial clamping base screw 13;

[0055] Four top plate bolt holes 25 are formed in the top plate 4, the four axial clamping top plate screws 23 respectively penetrate through the four top plate bolt holes 25, and the axial clamping top plate screws 23 are in threaded connection with the top plate bolt holes 25; the axial clamping top plate screw 23 is in threaded connection with a nut 3, and the nut 3 abuts against the top surface of the top plate 4;

[0056] Four bottom plate bolt holes 37 are formed in the bottom plate 12, the bottom of the bottom plate 12 is provided with four bases 14, the four bases 14 are respectively located directly below the four bottom plate bolt holes 37, the axial clamping base screw 13 penetrates through the bottom plate bolt hole 37 and is in threaded connection with the base 14;

[0057] In the embodiment, the top plate 4 and the bottom plate 12 are both steel plates; the length of a side of the bottom plate 12 is 50 cm, and the thickness is 1.3 cm;

[0058] The base 14 is a cylindrical shape with a diameter of 4 cm;

[0059] The diameter of the bottom plate bolt hole 37 is 1.2 cm;

[0060] The disassembly and assembly of the top plate 4, the acrylic cover plate 5 and the axial clamping member 6 are realized through the four axial clamping top plate screws 23 and the four nuts 3, the disassembly and assembly of the base 14, the bottom plate 12 and the axial clamping member 6 are realized through the four axial clamping base screws 13 and the four bottom plate bolt holes 37, and thus the convenient disassembly and assembly of the upper sleeve 22 and the lower sleeve 7 are realized;

[0061] The height of axial clamping component 6 is 80 cm, the height of axial clamping top plate screw 23 is 15 cm, and the height of axial clamping base screw 13 is 5 cm.

[0062] The base 14 is designed to be adjustable, and the height and level can be adjusted according to the test environment to ensure the stability of the device.

[0063] Further optimization, the joint of the upper sleeve 22 and the lower sleeve 7 is coated with vaseline and installed with a sealing washer to ensure that the entire device maintains good airtightness during operation.

[0064] Further optimization, the heating element includes a heating plate 34 sleeved outside the lower sleeve 7, the heating plate 34 is fixedly installed on the outer wall of the lower sleeve 7 by a spring, and a gap is provided between the opposite ends of the heating plate 34.

[0065] The ultrasonic vibration assembly includes an ultrasonic transmitter 33 and a mounting ring 32; the ultrasonic transmitter 33 is installed on the outer wall of the lower sleeve 7 through the mounting ring 32; and the mounting ring 32 is located in the gap.

[0066] Further optimization, the top of the lower sleeve 7 is provided with a first recess 20, and the bottom is provided with an annular protrusion 10; the top of the upper sleeve 22 is provided with a first protrusion 36, and the bottom is provided with a second protrusion 21; the bottom of the acrylic cover plate 5 is provided with a second recess 2, and the top surface of the bottom plate 12 is provided with an annular recess 11.

[0067] The first protrusion 36 is clamped with the second recess 2, the second protrusion 21 is clamped with the first recess 20, and the annular protrusion 10 is clamped with the annular recess 11.

[0068] The diameter of the lower sleeve 7 is 40 cm, the height is 60 cm, and the wall thickness is 1 cm; the height of the annular protrusion 10 is 0.5 cm.

[0069] Further optimization, a first handle 35 is installed on the outer wall of the upper sleeve 22, a second handle 31 is installed on the outer wall of the lower sleeve 7, and a third handle 24 is installed on the top plate 4.

[0070] Further optimization, the top plate 4 is provided with an air compressor inlet 29 and a displacement sensor wire inlet hole 1, the transmission line of the displacement sensor extends out of the displacement sensor wire inlet hole 1 and is electrically connected with the acquisition panel 30; the displacement sensor wire inlet hole 1 and the transmission line are sealed.

[0071] The outer wall of the lower sleeve 7 is provided with a drainage clamp plate interface 15, a temperature access hole 16, a vacuum degree access hole 17, and a pore water pressure sensor access hole 19; the detection end of the vacuum sensor penetrates through the vacuum degree access hole 17, the detection end of the pore water pressure sensor penetrates through the pore water pressure sensor access hole 19, and the detection end of the temperature sensor penetrates through the temperature access hole 16.

[0072] The application also provides a use method of the engineering waste mud multifunctional rapid dewatering test device, including the following steps:

[0073] Step 1: fixing the bottom plate 12 on a flat site;

[0074] Step 2: embedding the annular protrusion 10 of the lower sleeve 7 into the annular groove 11 of the bottom plate 12 to ensure the sealing, smearing vaseline on the contact surface and installing a sealing gasket; the drainage plate 18 is located inside the lower sleeve 7, wrapped with geotextile, connected to the external vacuum drainage pipe 9 through the drainage plate clamp 8, connected to the water storage barrel 27 after the vacuum drainage pipe 9 passes through the drainage port, and finally connected to the vacuum table through the vacuum pump 28;

[0075] Step 3: pouring the pretreated mud into the lower sleeve 7, filling to 3 / 5 of the height of the lower sleeve 7, and covering the vacuum film to prevent water from escaping;

[0076] Step 4: unscrewing the displacement sensor wire inlet hole 1 screw of the lower sleeve 7, respectively inserting the sensing end of the pore water pressure sensor 19, the vacuum gauge 17 and the thermometer 16, ensuring that the sensors are in full contact with the mud and then sealed, and connecting the sensor data transmission line to the acquisition panel 30;

[0077] Step 5: embedding the second protrusion 21 at the bottom of the upper sleeve 22 into the first groove 20 of the lower sleeve 7, smearing vaseline and installing a sealing gasket, and ensuring that the upper sleeve 22 and the lower sleeve 7 are tightly embedded and sealed;

[0078] Step 6: installing the acrylic cover plate 5 on the top of the upper sleeve 22, clamping through the bolt, installing the laser displacement sensor below the acrylic cover plate 5, and connecting the data line of the laser sensor to the acquisition panel 30 through the sealing displacement sensor wire inlet hole 1;

[0079] Step 7: starting the air compressor 26 and the vacuum pump 28 to start the mud dewatering test;

[0080] Step 8: when any of the following conditions is met, the test is ended: the pressure displayed by the pore water pressure sensor 19 remains stable, the settlement change displayed by the displacement sensor tends to be stable, or the drainage system hardly drains water.

[0081] Step 9: after the test is ended, cleaning the device and equipment, processing the mud used in the test, and analyzing and processing the collected data to ensure the accuracy of the test data.

[0082] Example 2

[0083] The present embodiment is used for vacuum preloading combined heating test research, which is different from example 1 in that:

[0084] In the installation process in embodiment 1, the lower sleeve 7 is installed above the center of the bottom plate 12, and the heating plate 34 is fixed to the outer wall of the lower sleeve 7 by springs, further accelerating the dehydration process of the slurry. In order to ensure that the slurry can be fully heated, the height of the heating plate 34 is set to 3 / 5 of the lower sleeve 7, the heating plate 34 is fixed to the outer wall of the lower sleeve 7 by springs, and a certain gap is left for the installation of sensors and is connected to the external heating device through wires; the temperature of the heating plate 34 is set to 60℃.

[0085] When starting the test, first close the atmospheric vent to ensure that the sleeve is sealed, open the branch pipe valve connected to the vacuum pump 28, and start the vacuum pump 28 for vacuum preloading.

[0086] After the slurry is dehydrated to a certain extent, gradually start the heating device, and the heating plate 34 starts to provide heat source for the slurry, and the water in the slurry gradually evaporates after being heated;

[0087] The vacuum pump 28 continues to work, and the water vapor and liquid water discharged are introduced into the water storage bucket 27 through the vacuum drainage pipe 9, and the temperature during heating is monitored in real time by the thermometer and kept within the set range.

[0088] During the test, the dehydration of the slurry is continuously accelerated by repeated operation of heating and vacuum preloading. The heating plate 34 cooperates with the vacuum pump 28 to effectively shorten the dehydration time. After the test is completed, gradually close the heating device and the vacuum pump, and stop the drainage operation.

[0089] Embodiment 3

[0090] This embodiment is used for vacuum preloading combined with ultrasonic test research, which is different from embodiment 1 in that:

[0091] In the installation process in embodiment 1, the lower sleeve 7 is installed above the center of the bottom plate 12, and the ultrasonic transmitter 33 is fixed to the outer wall of the lower sleeve 7 by a rigid mounting ring 32 with a diameter of 40.5 cm, and the transmitted ultrasonic waves can penetrate the slurry to promote the separation of water. The ultrasonic transmitter 33 is connected to the power supply by using a cable, and the ultrasonic frequency is set to 20 kHz. When starting the test, first close all the exhaust channels to ensure the sealing of the inside of the lower sleeve 7 and the upper sleeve 22. Then, open the branch pipe valve connected to the vacuum pump 28, start the vacuum pump, start the vacuum preloading, and maintain the negative pressure at about -80 kPa.

[0092] After the slurry is preliminarily dehydrated, the power of the ultrasonic transmitter 33 is turned on to start ultrasonic vibration. At this time, the water in the slurry starts to accelerate the separation under the action of ultrasonic waves, and the vibration makes the combination of water and slurry particles become loose and more easily separated. At the same time, continue to introduce the water separated from the slurry into the water storage bucket 27 through the vacuum drainage pipe 9 to ensure smooth drainage.

[0093] In different stages of the test, the frequency and power of the ultrasonic transmitter 33 are adjusted to further accelerate the dewatering process of the slurry. After the test is completed, the power of the ultrasonic transmitter 33 is gradually reduced, and finally the ultrasonic transmitter 33 and the vacuum pump 28 are turned off to stop the test.

[0094] In the description of the present application, it should be understood that the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore cannot be understood as a limitation on the present application.

[0095] Obviously, the above embodiments of the present application are only examples for clearly illustrating the present application, and are not a limitation on the embodiments of the present application. For ordinary skilled users in the art, other different forms of changes or variations can be made on the basis of the above description. Here, it is not necessary and impossible to enumerate all the embodiments. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the claims of the present application.

Claims

1. A multifunctional rapid dewatering test device for engineering waste mud, characterized in that, The utility model relates to a kind of sealed tube structure, including top plate (4), acrylic cover plate (5), upper sleeve (22), lower sleeve (7) and bottom plate (12) sequentially connected from top to bottom;The top plate (4), the acrylic cover plate (5), the upper sleeve (22), the lower sleeve (7) and the bottom plate (12) are enclosed to form a sealed cavity;The top plate (4) and the bottom plate (12) are detachably connected by fastener; Drainage system, including drainage pipe assembly, water storage bucket (27) and vacuum pump (28);The drainage pipe assembly one end extends into the inner chamber of the lower sleeve (7), the other end is communicated with the water storage bucket (27), the vacuum pump (28) is communicated with the water storage bucket (27); Air compressor (26), the air compressor (26) is connected on the top plate (4), the air compressor (26) is communicated with the sealed cavity; Data acquisition system, including acquisition panel (30) and environmental data acquisition assembly, the environmental data acquisition assembly is electrically connected with the acquisition panel (30), and the environmental data acquisition assembly is used for collecting the pore water pressure, settlement displacement and temperature of the sediment in the sealed cavity; Wherein, the lower sleeve (7) is installed with ultrasonic vibration assembly and heating element. The environmental data acquisition assembly includes pore water pressure sensor, displacement sensor, vacuum sensor and temperature sensor;The detection end of the vacuum sensor, the pore water pressure sensor and the temperature sensor all extend into the inner chamber of the lower sleeve (7), the displacement sensor is installed at the bottom of the acrylic cover plate (5), and the vacuum sensor, the pore water pressure sensor, the displacement sensor and the temperature sensor are electrically connected with the acquisition panel (30).

2. The multifunctional rapid dewatering test device for engineering waste mud according to claim 1, characterized in that: The drainage pipe assembly includes drainage plate (18) and vacuum drainage pipe (9), the drainage plate (18) is installed in the inner chamber of the lower sleeve (7), and geotextile is provided on the drainage plate (18);One end of the drainage plate (18) is detachably connected with the vacuum drainage pipe (9) by drainage plate clamp (8), the vacuum drainage pipe (9) is fixedly connected with the water storage bucket (27), and the drainage plate (18), the vacuum drainage pipe (9) and the water storage bucket (27) are communicated with each other.

3. The multifunctional rapid dewatering test device for engineering waste mud according to claim 1, characterized in that: The fastener includes four axial clamping members (6) installed on the bottom plate (12), the top of the axial clamping member (6) is provided with an axial clamping top plate screw (23), and the bottom is provided with an axial clamping base screw (13); 4. The multifunctional rapid dewatering test device for engineering waste mud according to claim 1, characterized in that: Four top plate bolt holes (25) are formed in the top plate (4), four axial clamping top plate screws (23) pass through the four top plate bolt holes (25) respectively, and the axial clamping top plate screw (23) is screwed with the top plate bolt hole (25);Nut (3) is screwed on the axial clamping top plate screw (23), and the nut (3) abuts against the top surface of the top plate (4). ​ Four bottom plate bolt holes (37) are formed in the bottom plate (12), and four bases (14) are arranged at the bottom of the bottom plate (12), wherein the four bases (14) are respectively located directly below the four bottom plate bolt holes (37), and the axial clamping base screw rod (13) penetrates the bottom plate bolt hole (37) and is threadedly connected with the base (14).

5. The multifunctional rapid dewatering test device for engineering waste mud according to claim 1, characterized in that: The heating element comprises a heating plate (34) sleeved outside the lower sleeve (7), the heating plate (34) is fixedly installed on the outer wall of the lower sleeve (7) by a spring, and a space is arranged between the opposite ends of the heating plate (34). The ultrasonic vibration assembly comprises an ultrasonic transmitter (33) and a mounting ring (32), the ultrasonic transmitter (33) is mounted on the outer wall of the lower sleeve (7) through the mounting ring (32), and the mounting ring (32) is located in the space.

6. The multifunctional rapid dewatering test device for engineering waste mud according to claim 1, characterized in that: The top of the lower sleeve (7) is provided with a first recess (20), and the bottom is provided with an annular protrusion (10); the top of the upper sleeve (22) is provided with a first protrusion (36), and the bottom is provided with a second protrusion (21); the bottom of the acrylic cover plate (5) is provided with a second recess (2), and the top surface of the bottom plate (12) is provided with an annular recess (11); The first protrusion (36) is clamped with the second recess (2), the second protrusion (21) is clamped with the first recess (20), and the annular protrusion (10) is clamped with the annular recess (11).

7. The multifunctional rapid dewatering test device for engineering waste mud according to claim 1, characterized in that: A first handle (35) is mounted on the outer wall of the upper sleeve (22), a second handle (31) is mounted on the outer wall of the lower sleeve (7), and a third handle (24) is mounted on the top plate (4).

8. The multifunctional rapid dewatering test device for engineering waste mud according to claim 2, characterized in that: An air compressor inlet (29) and a displacement sensor wire inlet hole (1) are formed in the top plate (4), the transmission line of the displacement sensor extends out of the displacement sensor wire inlet hole (1) and is electrically connected with the acquisition panel (30); A drainage clamp plate interface (15), a temperature access hole (16), a vacuum degree access hole (17) and a pore water pressure sensor access hole (19) are formed in the outer wall of the lower sleeve (7); the detection end of the vacuum sensor penetrates the vacuum degree access hole (17), the detection end of the pore water pressure sensor penetrates the pore water pressure sensor access hole (19), and the detection end of the temperature sensor penetrates the temperature access hole (16).

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