A device for measuring the fluidity of a cement paste
By integrating automated functions into the cement slurry flowability testing device, the problem of large human error in existing technologies has been solved, achieving efficient and accurate testing of cement slurry flowability and saving labor costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 徐斌
- Filing Date
- 2025-03-04
- Publication Date
- 2026-07-07
AI Technical Summary
Existing cement slurry fluidity testers require two people to operate simultaneously, resulting in problems such as large human error, low automation, and low testing efficiency.
A cement slurry flowability testing device was designed, integrating vibration reduction, control, mixing, loading, transmission and cleaning functions to achieve automatic loading, automatic weighing, automatic mixing, automatic testing and automatic cleaning, reducing manual operation and improving the degree of automation.
It reduces human error, saves labor costs, improves measurement accuracy and testing efficiency, and enables efficient and accurate testing of cement slurry fluidity.
Smart Images
Figure CN224471490U_ABST
Abstract
Description
Technical Field
[0001] This utility model discloses a testing device for measuring the fluidity of cement slurry. This utility model relates to the field of civil engineering, and particularly to the testing fields of building engineering, highway engineering, waterway engineering, and railway engineering. This testing device is used for testing the fluidity (flow cone method) of cement slurry, which is a powdery hydraulic inorganic cementitious material referred to as cement. Background Technology
[0002] In the engineering testing industry, when controlling the quality of cement slurry, it is necessary to first test the fluidity of the cement slurry (flow cone method) indoors to determine the proportion of water used in the construction of the cement slurry, which is used to test the fluidity of the cement slurry.
[0003] Currently, existing testing standards, such as GB / T 50448-2015 "Technical Specification for Application of Cement-based Grouting Materials", JTG 3420-2020 "Test Procedures for Cement and Cement Concrete in Highway Engineering", JTS / T 236-2019 "Technical Specification for Testing and Inspection of Concrete in Waterway Engineering", and TB / T 3192-2008 "Technical Conditions for Grouting of Pipes in Post-tensioned Prestressed Concrete Beams of Railways", all have the following shortcomings in the flowability measuring instruments used for testing the flowability (flow cone method) of cement grout.
[0004] As technicians in this testing field know, cement and water are mixed in a certain proportion in a high-speed mixer to form cement slurry. The cement slurry is then poured into a flowability tester for flowability (flow cone method) testing. The testing process requires two technicians to complete: one to operate the valve switch and the other to control the stopwatch. The two operate synchronously, which is greatly affected by human factors, leading to asynchronous operation and easy operational errors. Existing flowability testers have a low degree of automation, affecting testing efficiency and making the results inaccurate. Therefore,
[0005] This invention proposes a testing device for measuring the fluidity of cement slurry, which improves and refines the traditional testing steps by combining the mixing and testing steps. This solves the aforementioned problems, increases the automation level of the cement slurry fluidity tester, reduces human error, saves labor costs and resources, and improves the measurement accuracy of the cement slurry fluidity tester.
[0006] The purpose of this invention is to provide a testing device for measuring the fluidity of cement slurry. This device enables automatic loading, weighing, mixing, testing, and cleaning, thereby achieving automation in measuring the fluidity of cement slurry, saving labor costs, reducing human error, and improving the accuracy of cement slurry fluidity measurement. Utility Model Content
[0007] To achieve the above objectives, this utility model is realized through the following technical solution:
[0008] A testing device for measuring the fluidity of cement slurry, the device comprising a shock absorption device, a control system, a braking device, a mixing device, a loading device, a conveying device, a testing device, and a cleaning device.
[0009] Its features are:
[0010] The aforementioned device for measuring the flowability of cement slurry is characterized in that the damping device consists of the bottom components at the four corners of the flowability measuring instrument. The damping device comprises a rubber block, an adjusting shim, a fixing rod, and a universal level. The rubber block is in contact with the ground, the adjusting shim is on the upper part of the rubber block, the fixing rod is on the upper part of the adjusting shim, the lower part of the fixing rod is connected to the adjusting shim, the upper part of the fixing rod is connected to the bottom of the measuring instrument, and the universal level is on the left side of the damping device.
[0011] The aforementioned testing device for measuring the fluidity of cement slurry is characterized in that the control device consists of a power switch, a display, a speed module, and a control module. The control device is located on the front of the measuring instrument, the power switch is on top of the control device, the display is in the middle of the control device, and the speed module is below the display. The control module and the speed module are arranged side by side.
[0012] The device for measuring the flowability of cement slurry is characterized in that the braking device consists of a high-speed variable frequency motor and a coupling. The high-speed variable frequency motor is fixed at the bottom of the measuring instrument, and the coupling is on the left side of the high-speed variable frequency motor and connected to the high-speed variable frequency motor.
[0013] The aforementioned device for measuring the flowability of cement slurry is characterized in that the mixing device comprises a pot body, a mixing rod, type A mixing blades, type B mixing blades, and a discharge gate valve. The pot body is connected to a coupling. The mixing rod is arranged horizontally inside the pot body. The type A mixing blades and type B mixing blades are continuously arranged on the mixing rod, and are composed of type A mixing blades, type B mixing blades, type A mixing blades, and type B mixing blades from left to right. The discharge gate valve is located at the lower left of the pot body.
[0014] The aforementioned device for measuring the flowability of cement slurry is characterized in that the loading device comprises a loading hopper, a handle, a support, a weighing sensor, a pneumatic butterfly valve, a discharge port, and a valve. The loading device is located above the braking device, the loading hopper is above the loading device, and the bottom of the loading hopper forms a certain slope. The handle is installed on the outside of the loading hopper, the support is below the loading hopper and connected to it, the weighing sensor is below the support, the pneumatic butterfly valve is to the left of the discharge port, the discharge port is below the loading hopper, and the valve is below the discharge port and connected to the top of the pot body.
[0015] The aforementioned testing device for measuring the fluidity of cement slurry is characterized in that the transmission device comprises a suction port, a vacuum tube, a pump, a flow meter, a valve channel, and an outlet. The transmission device is located on the left side of the measuring instrument. The suction port is inside the pot and located at the bottom of the vacuum tube. The vacuum tube is on the left side of the transmission device and has a suction port at its bottom, which draws liquid into the pot. The pump is above the vacuum tube. The valve channel is connected to the vacuum tube. The flow meter is above the valve channel. The outlet is on the right side of the valve channel and is above the flow cone.
[0016] The aforementioned testing device for measuring the flowability of cement slurry is characterized in that the testing device comprises a flow cone, a flow valve, an electromagnetic coil, a valve, and a discharge pipe. The flow cone is located on top of the pot body, the flow valve is located at the bottom of the flow cone and connected to the flow cone, the electromagnetic coil is located on the outside of the discharge pipe, the valve is connected to the discharge pipe, and the discharge pipe is located at the lower part of the flow cone and connected to the flow cone.
[0017] The aforementioned device for measuring the flowability of cement slurry is characterized in that the cleaning device comprises a water inlet, a water valve, a rotary bearing, a circular nozzle, and a nozzle. The water inlet is located above the measuring instrument, the water valve is located below the water inlet, the rotary bearing is located below the water valve, the circular nozzle is located below the rotary bearing, and the nozzle is located at the head of the circular nozzle, with the nozzle forming a certain angle outward.
[0018] The present invention is characterized by a cement slurry flowability testing device. Through a control system, the device automatically loads and weighs the cement slurry, accurately pouring it into the mixing device. A braking device is activated, causing the mixing blades to agitate at high speed. After mixing, the mixed cement slurry is conveyed through a transmission device into a testing device. Once a certain volume is reached, the flowability of the cement slurry is measured. After testing, a cleaning device is activated, spraying water into the testing device for cleaning. Wastewater flows into the mixing device, then back into the testing device via the transmission device, and is discharged through a drain valve. This cycle repeats from top to bottom until the device is clean. This invention features a high degree of automation, saving labor costs, reducing human error, improving the measurement accuracy of cement slurry flowability, expanding the application scope of cement slurry flowability testing, and effectively, accurately, and quickly detecting the flowability of cement slurry. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model.
[0020] Figure 2 This is a schematic diagram of the braking device and stirring device of this utility model.
[0021] Figure 3 This is a schematic diagram of the loading device of this utility model.
[0022] Figure 4 This is a schematic diagram of the transmission device of this utility model.
[0023] Figure 5 This is a schematic diagram of the structure of the testing device and cleaning device of this utility model. Detailed Implementation
[0024] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings:
[0025] like Figure 1 As shown, a testing device for measuring the fluidity of cement slurry includes a shock-absorbing device (1), a control system (2), a braking device (3), a mixing device (4), a loading device (5), a transmission device (6), a testing device (7), and a cleaning device (8).
[0026] Its features are:
[0027] like Figure 1 and Figure 2As shown, the shock absorption device (1) consists of a rubber block (1-1), an adjusting shim (1-2), a fixing rod (1-3), and a universal level (1-4). The control device (2) consists of a power switch (2-1), a display (2-2), a speed module (2-3), and a control module (2-4). The braking device (3) consists of a high-speed variable frequency motor (3-1) and a coupling (3-2). The high-speed variable frequency motor (3-1) is located to the right of the coupling (3-2), and the coupling (3-2) is connected to the high-speed variable frequency motor (3-1). The stirring device (4) consists of a pot body (4-1), a stirring rod (4-2), an A-type stirring blade (4-3), a B-type stirring blade (4-4), and a discharge gate valve (4-5). The pot body (4-1) is located on the left side of the coupling (3-2) and is connected to the coupling (3-2). The stirring rod (4-2) is installed inside the pot body (4-1). The A-type stirring blade (4-3) and the B-type stirring blade (4-4) are continuously installed on the stirring rod (4-2). The discharge gate valve (4-5) is located at the lower left of the pot body (4-1).
[0028] like Figure 3 As shown, the loading device (5) consists of a loading bin (5-1), a handle (5-2), a bracket (5-3), a weighing sensor (5-4), a pneumatic butterfly valve (5-5), a discharge port (5-6), and a valve (5-7). The loading bin (5-1) is above the bracket (5-3), the handle (5-2) is outside the loading bin (5-1), the bracket (5-3) is below the loading bin (5-1), the weighing sensor (5-4) is below the bracket (5-3), the pneumatic butterfly valve (5-5) is to the left of the discharge port (5-6), the discharge port (5-6) is below the loading bin (5-1), and the discharge port (5-7) is connected vertically to the valve (5-7).
[0029] like Figure 4 As shown, the transmission device (6) consists of a suction port (6-1), a vacuum tube (6-2), a pump (6-3), a flow meter (6-4), a valve channel (6-5), and an outlet (6-6). The suction port (6-1) is at the bottom of the vacuum tube (6-2), the pump (6-3) is above the vacuum tube (6-2), the valve channel (6-5) is on the right side of the vacuum tube (6-2), the flow meter (6-4) is above the valve channel (6-5), and the outlet (6-6) is on the right side of the valve channel (6-5).
[0030] like Figure 5As shown, the testing device (7) consists of a flow cone (7-1), a flow valve (7-2), an electromagnetic coil (7-3), a valve (7-4), and a discharge pipe (7-5). The flow cone (7-1) is located above the flow valve (7-2), the electromagnetic coil (7-3) is located outside the discharge pipe (7-5), and the valve (7-4) is connected vertically to the discharge pipe (7-5). The cleaning device (8) consists of a water inlet (8-1), a water valve (8-2), a rotary bearing (8-3), a circular nozzle (8-4), and a nozzle (8-5). The water inlet (8-1) is located above the water valve (8-2), the rotary bearing (8-3) is located above the circular nozzle (8-4), and the nozzle (8-5) is located at the head of the circular nozzle (8-4).
[0031] The following section further illustrates the solution of this utility model with reference to a specific test method for measuring the fluidity of cement slurry.
[0032] The testing device for measuring the fluidity of cement slurry conforms to the requirements for the fluidity measuring instrument used in the following standards: GB / T 50448-2015 "Technical Specification for Application of Cement-based Grouting Materials", JTG 3420-2020 "Test Procedures for Cement and Cement Concrete in Highway Engineering", JTS / T 236-2019 "Technical Specification for Testing and Inspection of Concrete in Water Transport Engineering", and TB / T 3192-2008 "Technical Conditions for Grouting of Pipes in Post-tensioned Prestressed Concrete Beams of Railways".
[0033] The first step is to level the device. Place the testing device on the operating platform and connect the external water source to the water inlet (8-1). Before the test, ensure that the testing device is stable. Adjust the adjusting shims (1-2) using the universal level (1-4) to make the testing device level.
[0034] The second step is to wet the device. Turn on the power switch (2-1), adjust the control module (2-4) through the display (2-2), input the relevant information, and start the detection device. Water flows from the water inlet (8-1), through the water valve (8-2), and the rotating bearing (8-3). Water flows out from the nozzle (8-5) of the annular nozzle (8-4). Rotate the annular nozzle (8-4) so that the water begins to flow evenly from the flow cone (7-1), the pot body (4-1), the vacuum tube (6-2), and back to the flow cone (7-1), and is discharged from the discharge gate valve (4-5). This allows the testing device (7), the stirring device (4), and the transmission device (6) to play a wetting role.
[0035] The third step of calibration involves injecting an appropriate amount of water into the pot body (4-1) through the inlet (8-1) and the flow cone (7-1). The pump (6-3) is then started to draw water from the pot body (4-1) through the suction port (6-1). The water flows upward through the straight-through pipe (6-2), through the flow meter (6-4), and through the valve (6-5). A total of (1725±5) mL of water is recorded and flows into the flow cone (7-1) from the outlet (6-6). Excess water in the pot body (4-1) is discharged through the discharge gate valve (4-5). The control device (2-4) activates the solenoid coil (7-3), opening the valve (7-4). Water then flows through the flow valve (7-2) and out of the discharge pipe (7-5), flowing into the pot body (4-1). When the water flows out of the flow cone (7-1) for (8.0±0.5) seconds, the flow valve (7-2) records the outflow time, which can be used to determine the fluidity of cement slurry. After calibration, open the discharge gate valve (4-5) and the water flows out from the pot body (4-1). After the water has flowed out, close the discharge gate valve (4-5).
[0036] The fourth step of the test involves adjusting the speed module (2-3). Following the calibration procedure, a certain proportion of water flows through the flow valve (7-2) into the test device (7) of the pot body (4-1). At this time, all valves are in the closed state. Open the loading hopper (5-1) by the handle (5-2), pour an appropriate amount of cement into the loading hopper (5-1), start the control module (2-4) to start automatic flowability detection, start the high-speed variable frequency motor (3-1), the high-speed variable frequency motor (3-1) drives the stirring rod (4-2) through the coupling (3-2), so that the A-type stirring blade (4-3) and the B-type stirring blade (4-4) are in a slow stirring state, open the pneumatic butterfly valve (5-5), open the valve (5-7) switch, and let the cement in the loading hopper (5-1) flow into the pot body (4-1) through the discharge port (5-6) and the valve (5-7). The mass of the cement is weighed by the weighing sensor (5-4) at the bottom of the bracket (5-3). When the mass of the cement meets the requirements, the pneumatic butterfly valve (5-5) and the valve (5-7) automatically close. A certain proportion of water and cement are mixed in the pot (4-1). According to the specifications, the A-type mixing blade (4-3) and the B-type mixing blade (4-4) are first mixed at a slow speed and then at a high speed. When the mixing time meets the specifications, the cement slurry is used for testing. Start the pump (6-3). The cement slurry is drawn into the vacuum tube (6-2) through the suction port (6-1). It passes through the flow meter (6-4) and the valve (6-5). 1725±5 mL of cement slurry flows from the outlet (6-6) into the flow cone (7-1). Start the solenoid (7-3) and open the valve (7-4). The cement slurry passes through the flow valve (7-2) and flows out from the discharge pipe (7-5) into the pot body (4-1). Record the time it takes for all the cement slurry to flow into the pot body (4-1) through the flow valve (7-2). Use the cement slurry to measure the flowability. After the test is completed, open the discharge valve (4-5). The cement slurry flows out of the pot body. After it has flowed out completely, close the discharge valve.
[0037] The fifth step is cleaning. After the test is completed, the stirring device (4), the transmission device (5), and the testing device (7) are cleaned: water is sprayed from the water inlet (8-1) through the water valve (8-2) and from the nozzle (8-5) of the annular nozzle (8-4); the rotating bearing (8-3) is started and the annular nozzle (8-4) is rotated so that the water is evenly sprayed into the flow cone (7-1) for rinsing; the electromagnetic coil (7-3) is turned on and the valve (7-4) is opened, and the wastewater flows into the pot body (4-1) from the discharge pipe (7-5), and the stirring blades are stirred; the liquid pump (6-3) is turned on and the wastewater is sucked into the vacuum pipe (6-2) from the liquid suction port (6-1), then through the valve channel (6-5), from the liquid outlet (6-6) into the flow cone (7-1), then into the pot body (4-1), and discharged from the discharge gate valve (4-5). Repeated rinsing, stirring, pumping, and draining until the stirring device (4), the transfer device (6), and the testing device (7) are clean, the control module is restarted, and the test is completed in sequence through the cycle of wetting, calibration, testing, and cleaning.
Claims
1. A testing device for measuring the fluidity of cement slurry, the testing device comprising a shock-absorbing device (1), a control device (2), a braking device (3), a mixing device (4), a loading device (5), a transmission device (6), a testing device (7), and a cleaning device (8), characterized in that; The shock absorption device (1) consists of a rubber block (1-1), an adjusting shim (1-2), a fixing rod (1-3), and a universal level (1-4). The control device (2) consists of a power switch (2-1), a display (2-2), a speed module (2-3), and a control module (2-4). The braking device (3) consists of a high-speed variable frequency motor (3-1) and a coupling (3-2). The high-speed variable frequency motor (3-1) is located to the right of the coupling (3-2), and the coupling (3-2) is connected to the high-speed variable frequency motor (3-1). The stirring device (4) consists of a pot body (4-1), a stirring rod (4-2), an A-type stirring blade (4-3), a B-type stirring blade (4-4), and a discharge gate valve (4-5). The pot body (4-1) is located on the left side of the coupling (3-2) and is connected to the coupling (3-2). The stirring rod (4-2) is set inside the pot body (4-1). The A-type stirring blade (4-3) and the B-type stirring blade (4-4) are continuously set on the stirring rod (4-2). The discharge gate valve (4-5) is set at the lower left of the pot body (4-1).
2. The detection device for measuring the fluidity of cement slurry as described in claim 1, characterized in that... The loading device (5) consists of a loading bin (5-1), a handle (5-2), a bracket (5-3), a weighing sensor (5-4), a pneumatic butterfly valve (5-5), a discharge port (5-6), and a valve (5-7). The loading bin (5-1) is above the bracket (5-3), the handle (5-2) is outside the loading bin (5-1), the bracket (5-3) is below the loading bin (5-1), the weighing sensor (5-4) is below the bracket (5-3), the pneumatic butterfly valve (5-5) is to the left of the discharge port (5-6), the discharge port (5-6) is below the loading bin (5-1), and the valve (5-7) is connected to the discharge port (5-6).
3. The detection device for measuring the fluidity of cement slurry as described in claim 1, characterized in that... The transmission device (6) consists of a suction port (6-1), a vacuum tube (6-2), a pump (6-3), a flow meter (6-4), a valve channel (6-5), and an outlet (6-6). The suction port (6-1) is at the bottom of the vacuum tube (6-2), the pump (6-3) is above the vacuum tube (6-2), the valve channel (6-5) is on the right side of the vacuum tube (6-2), the flow meter (6-4) is above the valve channel (6-5), and the outlet (6-6) is on the right side of the valve channel (6-5).
4. The detection device for measuring the fluidity of cement slurry as described in claim 1, characterized in that... The testing device (7) consists of a flow cone (7-1), a flow valve (7-2), an electromagnetic coil (7-3), a valve (7-4), and a discharge pipe (7-5). The flow cone (7-1) is located above the flow valve (7-2), the electromagnetic coil (7-3) is located outside the discharge pipe (7-5), and the valve (7-4) is connected vertically to the discharge pipe (7-5).
5. The testing device for measuring the fluidity of cement slurry as described in claim 1, characterized in that... The cleaning device (8) consists of a water inlet (8-1), a water valve (8-2), a rotary bearing (8-3), a circular nozzle (8-4), and a nozzle (8-5). The water inlet (8-1) is located above the water valve (8-2), the rotary bearing (8-3) is located above the circular nozzle (8-4), and the nozzle (8-5) is located at the head of the circular nozzle (8-4).