CN112526115B - Device and method for quickly measuring solid content of concrete waste slurry - Google Patents
Device and method for quickly measuring solid content of concrete waste slurry Download PDFInfo
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- CN112526115B CN112526115B CN202011465686.3A CN202011465686A CN112526115B CN 112526115 B CN112526115 B CN 112526115B CN 202011465686 A CN202011465686 A CN 202011465686A CN 112526115 B CN112526115 B CN 112526115B
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- waste slurry
- solid content
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/38—Concrete; ceramics; glass; bricks
- G01N33/383—Concrete, cement
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Abstract
The invention provides a device for rapidly measuring the solid content of concrete waste slurry, and belongs to the technical field of concrete. The device comprises a base, a container positioned on the base and a support vertical to the base, wherein the support comprises a horizontal rod and a vertical rod with adjustable height, a motor is installed at the tail end of the horizontal rod, a coupler, a torque sensor, a coupler and a stirring unit are sequentially installed at the bottom of the motor, a horizontal connecting rod is arranged between the torque sensor and the vertical rod, and a temperature measuring element is installed on the horizontal connecting rod. The invention also provides a method for measuring the solid content of the concrete waste slurry by using the device. The device can effectively ensure the uniformity of the waste slurry, reduce the test error, has strong operability, comprehensively considers the influence of the temperature on the test result, is combined with the actual environmental temperature of the mixing plant, has more reliable detection result, and realizes the stable quality control in the concrete production process.
Description
Technical Field
The invention belongs to the technical field of concrete, and particularly relates to a device and a method for quickly measuring the solid content of waste concrete slurry.
Background
Since the 20 th century and the 70 th century, the scale of the premixed concrete in China is rapid, and the production of the premixed concrete in the first half of 2019 reaches 10.32 hundred million m 3 The annual production amount reaches more than 20 billionm 3 (ii) a Huge enterprise energy consumption causes high water consumption; the water resource saving consciousness of partial sandstone suppliers is insufficient, the aim of increasing the water content of sandstone entering a field is fulfilled, meanwhile, the mixing plant carries out green closed management, and a large amount of waste slurry water is formed by flushing the field and a tank truck. If the waste slurry water in the mixing plant can not be timely recycled, the waste slurry water can only be subjected to filter pressing through a filter press, and then a vehicle is arranged to be conveyed to a specified place to be buried, so that the transportation cost is increased, and certain pollution is caused to the environment. Therefore, the reasonable recycling of the waste slurry and the reduction of the environmental pollution become one of the important measures for realizing the sustainable green development of the mixing plant.
The mixing plant receives various factor influences at the production concrete in-process, and there is certain fluctuation in the waste slurry water solid content of different time quantums, when adopting the waste slurry water to carry out concrete production, if can not accurate aassessment waste slurry aquatic solid component content, then can't carry out accurate control to the concrete water consumption, and the concrete quality that very big probably causes fluctuates.
At present, the drying method is the most accurate method for testing the solid content of the waste slurry, but because the stability of the waste slurry is poor, the sample quality has great influence on the result when the drying method is used for testing; when the mass is small, the test time can be saved, but the test result is relatively low; when the quality of the sample is high, the result is relatively accurate, but the test period is long, the hysteresis is obvious, and the detection data cannot be fed back to the concrete production application in time.
Disclosure of Invention
The invention aims to provide a simple, convenient and practical device and method for quickly measuring the solid content of the waste concrete slurry, which aim at solving the problems of the existing method for detecting the solid content of the waste concrete slurry.
The purpose of the invention is realized by the following technical scheme:
the utility model provides a concrete waste slurry solid content spot test device, includes the base, is located the container on the base, with base vertically support, the support includes horizon bar and height-adjustable's vertical rod, the motor is installed to the end of horizon bar, and the shaft coupling is installed in proper order to the motor bottom, and torque sensor, shaft coupling and stirring unit, be provided with the horizontal connecting rod between torque sensor and the vertical rod, temperature element installs on the horizontal connecting rod.
Furthermore, the device also comprises a computer for collecting the power data of the torque sensor and the temperature data of the temperature measuring element, and the collected data is converted into the solid content data of the waste slurry through an internal calculation program and displayed.
Further, the stirring unit comprises a stirring rod and a stirring blade positioned at the bottom of the stirring rod.
Further, the vertical pole includes a fixed portion, a movable portion, and an adjustment bolt, by which the height of the movable portion is adjusted.
Further, the temperature measuring element is a thermistor, and the rotating speed of the motor is not lower than 200r/min.
Further, the temperature measuring element is immersed to a position which is not less than 50mm below the liquid level and is not less than 30mm away from the edge of the container during measurement.
Furthermore, the container is transparent cylindrical and is provided with volume scale marks.
Further, the volume scale mark is the height of the liquid level of the waste slurry during measurement, the stirring blade of the stirring unit is completely immersed in the waste slurry during measurement, and the distance between the stirring unit and the bottom and the edge of the container is not more than 20mm.
A method for rapidly measuring the solid content of concrete waste slurry by adopting the device comprises the following steps:
1) Pouring a certain amount of concrete waste slurry into the container until the liquid level of the waste slurry reaches the volume scale mark marked on the outer surface of the container;
2) The height of the vertical rod is adjusted through the movable part, so that the stirring blade and the temperature measuring element are both immersed in the waste slurry, and the requirements on measuring height and edge distance are met;
3) And starting a power supply, driving the stirring unit to rotate by the motor, starting the torque sensor and the temperature measuring element to work, collecting power data of the torque sensor and temperature data of the temperature measuring element by the computer, and converting the collected data into waste slurry solid content data through an internal calculation program and displaying the waste slurry solid content data.
Further, the solid content of the waste slurry is calculated by the following formula:
Q＝(A*B*lgP+10 (A+B/T) +C)×100％ (1)
wherein Q is the solid content of the waste slurry, T is the temperature, A, B and C are correction coefficients, and P is the power.
Compared with the prior art, the invention has the following beneficial effects:
the device has simple structure, convenient operation, no need of strict operation rules, and realization of the determination of the solid content of the waste concrete slurry, wherein the whole operation process does not exceed 3min;
the stirring device is always in a stirring state in the waste slurry testing process, so that the uniformity of a waste slurry sample can be fully ensured, the testing result is more accurate, and the representativeness is stronger;
the device has short test period, can calculate and display the solid content of the waste concrete slurry in real time through a computer, simultaneously comprehensively considers temperature influence factors, is more close to actual production conditions, and has stronger guiding significance.
Drawings
FIG. 1 is a schematic structural diagram of the apparatus for rapidly determining solid content of concrete waste slurry according to the present invention;
reference numerals are as follows: 1-base, 2-container, 3-bracket, 301-vertical rod, 302-horizontal rod, 301A-fixed part, 301B-movable part, 301C-adjusting bolt, 4-motor, 5-coupler, 6-torque sensor, 7-coupler, 8-stirring unit, 9-horizontal connecting rod and 10-temperature measuring element.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and do not limit the invention.
The utility model provides a useless thick liquid solid content spot test device of concrete, as shown in figure 1, includes base 1, is located container 2 on the base 1, with base 1 vertically support 3, support 3 includes horizon bar 302 and height-adjustable's vertical rod 301, motor 4 is installed to the end of horizon bar 302, and shaft coupling 5, torque sensor 6, shaft coupling 7 and stirring unit 8 are installed in proper order to motor 4 bottom, be provided with horizontal connecting rod 9 between torque sensor 6 and the vertical rod 301, temperature element 10 is installed on the horizontal connecting rod 9.
In the device, a base 1 is used for supporting the whole device, a container 2 is used for storing concrete waste slurry, the container 2 is fixed on the base 1 through a clamping groove, a support 3 is used for realizing a motor 4, a coupler (5, 7), a torque sensor 6 and a stirring unit 8, meanwhile, the height of the stirring unit 8 and a temperature measuring element 10 is adjusted in the measuring process, the stirring unit 8 and the temperature measuring element 10 are immersed in the concrete waste slurry, the motor 4 provides power for rotation of the stirring unit 8, the coupler (5, 7) is used for realizing the motor 4, the torque sensor 6 and the stirring unit 8 are connected, the torque sensor 6 transmits power data to a computer, a horizontal connecting rod 9 realizes that the temperature measuring element 10 is fixedly installed, and the temperature measuring element 10 measures the temperature of the concrete waste slurry in the stirring process and transmits the temperature data to the computer.
Further, the device also comprises a computer (not shown) for collecting the power data of the torque sensor 6 and the temperature data of the temperature measuring element 10, and the collected data is converted into the waste slurry solid content data through an internal calculation program and displayed. The computer collects the power data of the torque sensor 6 and the temperature data of the temperature measuring element 10 (or the torque sensor 6 transmits the power data and the temperature data of the temperature measuring element to the computer) by adopting a mode which can be realized in the prior art, as long as the data collection can be realized; the internal calculation procedure for converting data into the solid content of the waste slurry is also the conventional technology, and the calculation and the display can be carried out through the internal procedure according to the calculation formula of the solid content of the waste slurry recorded in the invention.
Further, the vertical stick 301 includes a fixed portion 301A, a movable portion 301B, and an adjustment bolt 301C, and the height of the movable portion 301B is adjusted by the adjustment bolt 301C. The height adjustment of the movable portion 301B by the adjusting bolt 301C can be realized by a slide rail or other techniques conventional in the art, and can be easily realized by those skilled in the art as long as the height adjustment of the movable portion 301B can be realized.
Further, the stirring unit 8 comprises a stirring rod and a stirring blade positioned at the bottom of the stirring rod. The temperature measuring element 10 is a thermistor, and the rotating speed of the motor 4 is not lower than 200r/min. The temperature measuring element 10 is immersed to a position which is not less than 50mm below the liquid level and is not less than 30mm away from the edge of the container 2 during measurement.
Further, the container 2 is transparent and cylindrical, and volume scale marks are arranged on the container 2. The volume scale mark is the height of the liquid level of the waste slurry during measurement, the stirring blade of the stirring unit 8 is completely immersed in the waste slurry during measurement, and the distance between the stirring unit 8 and the bottom and the edge of the container 2 is not more than 20mm.
The method for rapidly measuring the solid content of the waste concrete slurry by adopting the device comprises the following steps:
1) Pouring a certain amount of concrete waste slurry into the container 2 until the liquid level of the waste slurry reaches the volume scale mark marked on the outer surface of the container 2;
2) The height of the vertical rod 301 is adjusted through the movable part 301B, so that the stirring blade and the temperature measuring element 10 are both immersed in the waste slurry, and the requirements of measuring height and edge distance are met;
3) And starting a power supply, driving the stirring unit 8 to rotate by the motor 4, starting the torque sensor 6 and the temperature measuring element 10 to work, collecting power data of the torque sensor and temperature data of the temperature measuring element by the computer, and converting the collected data into waste slurry solid content data through an internal calculation program and displaying the waste slurry solid content data.
Further, the formula for calculating the solid content of the waste slurry is as follows:
Q＝(A*B*lgP+10 (A+B/T) +C)×100％ (1)
wherein Q is the solid content of the waste slurry, T is the temperature (unit: DEG C), A, B and C are correction coefficients, and P is the power (unit: W).
Example 1
The concrete waste slurry solid content rapid measuring device of the embodiment has the specific structure shown in fig. 1, and the connection relationship and the function of each part are as described above.
In the embodiment, the rotating speed of the motor 4 is 200r/min, the sensor 6 is a torque sensor 6, the temperature measuring element 10 is a thermistor, the container 2 is a cylindrical transparent container 2, the diameter of the container 2 is 150mm, and the distance between a volume scale mark on the outer surface of the container 2 and the bottom surface of the container 2 is 180mm.
The method for rapidly measuring the solid content of the concrete waste slurry by adopting the device comprises the following steps:
1) And taking the waste slurry from the concrete waste slurry pool of the mixing plant and slowly introducing the waste slurry into the container 2 until the liquid level of the waste slurry reaches the volume scale mark of the container 2, wherein the depth of the waste liquid in the container 2 is 180mm.
2) Turning the adjusting bolt 301C, slowly placing the movable part 301B of the vertical rod 301 at the bottommost position, and then fixing the adjusting bolt 301C, wherein the distances between the stirring blades and the bottom and the edge of the container 2 are both 20mm; the temperature measuring element 10 is immersed in the waste slurry, and is 50mm away from the lower part of the liquid level of the waste slurry and 30mm away from the edge of the container 2.
3) And (3) turning on a power supply, driving the stirring unit 8 to rotate by the motor 4, starting the torque sensor 6 and the temperature measuring element 10 to work, stabilizing the rotating speed of the stirring unit 8 at 200r/min, directly reading on an electronic display screen of a computer after the power supply is turned on for 60s, and reading the value, namely the solid content value of the waste slurry at the temperature.
After calibration, A = -1.5, B = -30, C = -76.45, and the calculation formula of the solid content of the waste slurry is as follows:
Q＝(45lgP+10 (-1.5-30/T) -76.45)×100％
at 20 ℃, water is detected, the power is 50, and the solid content data displayed by a computer electronic display screen is 0%.
At 20 ℃, waste slurry is detected, the power is 100, and the data of the solid content of the waste slurry displayed by an electronic display screen of a computer is 13.55 percent. Meanwhile, 100g of the waste pulp of the embodiment is taken by a drying weight method, the waste pulp is dried to constant weight at 105 ℃, the mass of the waste residue is measured to be 13.45, namely the solid content of the waste pulp is 13.45 percent, the error between the solid content of the waste pulp measured by the device and the method of the invention and the solid content of the waste pulp measured by the drying method is 0.74 percent, and the device and the method of the invention can accurately measure the solid content of the waste pulp.
The above description is intended to be illustrative of the preferred embodiment of the present invention and should not be taken as limiting the invention, but rather, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.
Claims (9)
1. A device for rapidly measuring the solid content of concrete waste slurry is characterized by comprising a base, a container positioned on the base and a support vertical to the base, wherein the support comprises a horizontal rod and a vertical rod with adjustable height;
when the device realizes the rapid determination of the solid content of the concrete waste slurry, the calculation formula of the solid content of the waste slurry is as follows:
Q＝(A*B*lgP+10 (A+B/T) +C)×100％ (1)
wherein Q is the solid content of the waste slurry, T is the temperature, A, B and C are correction coefficients in unit ℃, and P is the power in unit W.
2. The apparatus for rapidly measuring the solid content of the concrete waste slurry as claimed in claim 1, wherein the apparatus further comprises a computer for collecting the power data of the torque sensor and the temperature data of the temperature measuring element, and the collected data is converted into the solid content data of the waste slurry and displayed through an internal calculation program.
3. The apparatus for rapidly measuring the solid content of the concrete waste slurry as claimed in claim 1, wherein the stirring unit comprises a stirring rod and a stirring blade positioned at the bottom of the stirring rod.
4. The apparatus for rapidly measuring the solid content of the concrete waste slurry as claimed in claim 1, wherein the vertical rod comprises a fixed portion, a movable portion and an adjusting bolt, and the height of the movable portion is adjusted by the adjusting bolt.
5. The apparatus for rapidly measuring the solid content of the concrete waste slurry as claimed in claim 1, wherein the temperature measuring element is a thermistor, and the rotation speed of the motor is not lower than 200r/min.
6. The apparatus for rapidly measuring the solid content of the concrete waste slurry as claimed in claim 1, wherein the temperature measuring element is immersed to a position not less than 50mm below the liquid level and not less than 30mm from the edge of the container during measurement.
7. The apparatus for rapidly measuring solid content in concrete waste slurry according to claim 1, wherein the container is a transparent cylinder and is provided with volume graduation lines.
8. The apparatus for rapidly measuring the solid content of the concrete waste slurry as claimed in claim 7, wherein the volume graduation mark is the height of the liquid level of the waste slurry during measurement, the stirring blade of the stirring unit is completely immersed in the waste slurry during measurement, and the distance between the stirring unit and the bottom and the edge of the container is not more than 20mm.
9. A method for rapidly measuring the solid content of concrete waste slurry is characterized in that the device of any one of claims 1 to 8 is adopted to realize rapid measurement of the solid content of the concrete waste slurry, and comprises the following steps:
1) Pouring a certain amount of concrete waste slurry into the container until the liquid level of the waste slurry reaches the volume scale mark marked on the outer surface of the container;
2) The height of the vertical rod is adjusted through the movable part, so that the stirring blade and the temperature measuring element are both immersed in the waste slurry, and the requirements on measuring height and edge distance are met;
3) And starting a power supply, driving the stirring unit to rotate by the motor, starting the torque sensor and the temperature measuring element to work, collecting power data of the torque sensor and temperature data of the temperature measuring element by the computer, and converting the collected data into waste slurry solid content data through an internal calculation program and displaying the waste slurry solid content data.
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