Self-compacting cement mortar fluidity testing device

Abstract

The utility model discloses a self-compacting cement mortar fluidity testing device which comprises a base, a heating tank, a stirring mechanism, a monitoring system and a material receiving container, the stirring mechanism is provided with a mounting plate and a stirring motor, and the monitoring system is provided with a weight sensor, a temperature monitoring piece, a timer and an operation panel with a display screen and a controller. And the material receiving container is arranged on the weight sensor and is over against the discharging pipe up and down. The material receiving container is arranged below the heating tank, the weight sensor can be used for recording the weight in the material receiving container, and the timer is used for timing, so that the accuracy of test data is improved, and the interference of human factors is reduced. In addition, the heating tank has heat preservation performance, the influence of different temperatures on the fluidity of the self-compacting cement mortar can be inspected, and then potential safety hazards caused by the temperatures are reduced; the stirring blades and the stirring head are mounted in the heating tank, so that automatic stirring can be realized, and the heating tank can be used as a storage container to inspect the influence of different holding time on the fluidity of mortar.

Description

Technical Field

[0001] This utility model relates to the field of cement mortar performance testing, and in particular to a device for testing the fluidity of self-compacting cement mortar. Background Technology

[0002] Self-compacting cement mortar has advantages such as good fluidity, high cohesion, and strong anti-segregation properties, and has been widely used in reinforcement grouting, underwater grouting, and narrow-form dense reinforcement construction. In addition, self-compacting cement mortar does not require mechanical vibration during the pouring process and can flow freely under its own weight, which reduces the labor intensity of workers and is in line with the concepts of energy conservation and environmental protection.

[0003] In practical engineering, before self-compacting cement mortar is put into use, it is often necessary to consider the influence of parameters such as material composition, mix proportion, mixing time, and temperature on the flowability of the self-compacting cement mortar in order to select raw materials that meet the project requirements. This means that a large number of flowability tests are required before the self-compacting mortar is put into use. However, the V-funnel test and micro-slump spread test are commonly used in the laboratory to test the flowability of self-compacting cement mortar, but these two test methods are greatly affected by human factors, resulting in large errors in the test results; in addition, neither of these test methods can examine the influence of different residence times and temperatures on the flowability of the mortar. Summary of the Invention

[0004] In view of this, this utility model proposes a self-compacting cement mortar fluidity testing device, which not only standardizes the data reading, reduces human interference, and improves the accuracy of test data, but also examines the influence of factors such as retention time and temperature on mortar fluidity, minimizing safety hazards.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] The self-compacting cement mortar flowability testing device of this utility model includes a base; and also includes...

[0007] A heating tank is mounted on the base, and a valve is installed on the discharge pipe at the bottom of the heating tank;

[0008] The stirring mechanism has a mounting plate horizontally mounted above the heating tank and a stirring motor mounted on the mounting plate. The stirring shaft of the stirring motor is vertically downward, and stirring blades and a stirring head are mounted on the stirring shaft, with the stirring head located at the bottom of the stirring shaft.

[0009] The monitoring system includes a weight sensor mounted on the base, a temperature monitoring device mounted inside the heating tank, a timer, and an operation panel with a display screen and a controller. The signal output terminals of the weight sensor, timer, and temperature monitoring device are all connected to the signal output terminal of the controller.

[0010] The receiving container is mounted on the weight sensor and is directly opposite the discharge pipe.

[0011] The beneficial effects are as follows: This invention places a receiving container below the heating tank, allowing a weight sensor to record the weight inside the container and a timer to keep track of the data, thus improving the accuracy of the test data and reducing human error. Furthermore, the heating tank of this invention has heat preservation properties, enabling the examination of the effect of different temperatures on the fluidity of self-compacting cement mortar, thereby reducing temperature-related safety hazards. Moreover, this invention installs stirring blades and a stirring head inside the heating tank, enabling automatic stirring and serving as a storage container to examine the effect of different residence times on mortar fluidity.

[0012] In this utility model, the self-compacting cement mortar fluidity testing device further includes a lifting power source for driving the mounting plate to rise and fall. The lifting power source can be a linear module driven by a motor or a lead screw transmission pair, or a cylinder, or a hydraulic cylinder. This utility model allows for adjusting the height of the mounting plate using the lifting power source, facilitating the addition of materials into the heating tank.

[0013] More preferably, the lifting power source includes at least two hydraulic cylinders spaced apart. The hydraulic cylinders are vertically positioned and their bodies are fixedly connected to the base. The mounting plate is connected to the piston rod of the hydraulic cylinder. At least two columns are provided on the base, and the columns extend upwards through the mounting plate. In this invention, the hydraulic cylinders are used to lift the mounting plate, thereby adjusting the height of the stirring motor and stirring shaft to meet actual testing requirements. The columns provide guidance and limiting functions, ensuring stable lifting of the mounting plate.

[0014] Preferably, the self-compacting cement mortar fluidity testing device of this utility model further includes a cleaning unit. The cleaning unit includes a pressure-resistant water tank disposed on the bottom surface of the mounting plate. The inlet of the pressure-resistant water tank is equipped with a pressurizing device, and multiple high-pressure nozzles are disposed at the bottom of the pressure-resistant water tank. The pressurizing device provides the required water pressure to the high-pressure nozzles. In actual use, the heating tank can be cleaned using the cleaning unit after the test is completed.

[0015] Preferably, the base is provided with a bracket, the bracket having a vertically mounted mounting rod on the base and a horizontally fixed arc-shaped fixing plate fixed to the mounting rod, and the outer wall of the heating tank is fixed to the arc-shaped fixing plate. This invention fixes the heating tank to the arc-shaped fixing plate, effectively ensuring the stability of the heating tank.

[0016] Compared with existing technologies, the advantages of this invention are as follows: Firstly, a receiving container is placed below the heating tank, allowing a weight sensor to record the weight within the container and a timer to maintain the time, thus improving the accuracy of test data and reducing human error. Secondly, the heating tank has heat-insulating properties, enabling the examination of the effect of different temperatures on the fluidity of self-compacting cement mortar, thereby reducing temperature-related safety hazards. Thirdly, the heating tank is equipped with stirring blades and a stirring head, enabling automatic stirring and serving as a storage container to examine the effect of different residence times on mortar fluidity. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model.

[0018] Figure 2 This is a circuit block diagram of this utility model. Detailed Implementation

[0019] The embodiments of this utility model will be described in detail below with reference to the accompanying drawings. These embodiments are implemented based on the technical solution of this utility model and provide detailed implementation methods and specific operation processes. However, the protection scope of this utility model is not limited to the following embodiments.

[0020] It should be noted that in the description of this utility model, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations.

[0021] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] It should be noted that the controller in the operation panel of this utility model can be a general-purpose processor, a special-purpose processor, a conventional processor, a digital signal processor (DSP), multiple microprocessors, one or more microprocessors associated with the DSP core, a controller, a microcontroller, an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA) circuit, any other type of integrated circuit (IC), and a state machine, etc.

[0023] Of course, the controller can also be a PLC controller (i.e., a programmable logic controller), or an industrial control computer with computer attributes and characteristics.

[0024] like Figure 1-2 As shown, the self-compacting cement mortar fluidity testing device of this utility model includes a base 1, a heating tank 2, a mixing mechanism, a monitoring system, and a receiving container 3 (with an opening on the top of the receiving container 3); the heating tank 2 is preferably an electric heating tank 2 mounted on the base 1, and the electric heating tank 2 has an opening on the top to facilitate the pouring of materials; a discharge pipe 4 is provided at the bottom of the heating tank 2, and a valve (preferably an electrically controlled valve 5) is provided on the discharge pipe 4 to control the opening and closing of the discharge pipe 4;

[0025] The stirring mechanism has a mounting plate 6 horizontally mounted above the heating tank 2 and a stirring motor 8 mounted on the mounting plate 6. The stirring shaft 7 of the stirring motor 8 (the stirring shaft 7 and the mounting plate 6 are rotatably connected) is vertically downward. The stirring shaft 7 is equipped with stirring blades 9 and stirring head 10 (the stirring head 10 is a hemispherical structure), and the stirring head 10 is located at the bottom of the stirring shaft 7.

[0026] During actual installation, the height of the mounting plate 6 can be adjusted mechanically or by using a lifting power source. When stirring is required, the mounting plate 6 is lowered to a certain height so that the stirring shaft 7 is located inside the heating tank 2; after stirring is completed, the mounting plate 6 is raised to a certain height so that the stirring shaft 7 and the stirring blades 9 are moved upward out of the heating tank 2.

[0027] This embodiment utilizes a lifting power source to adjust the height of the mounting plate 6. The lifting power source is preferably a hydraulic cylinder 11, which is vertically positioned with its lower body fixed to the base 1 and its piston rod end fixed to the mounting plate 6. Two hydraulic cylinders 11 are used to effectively ensure the smooth lifting and lowering of the mounting plate 6. Additionally, the base 1 has a pair of spaced-apart columns 12 that extend upwards through the mounting plate 6. The mounting plate 6 is equipped with bushings that mate with the columns 12, providing guidance and limiting functions to ensure stable lifting and lowering of the mounting plate 6.

[0028] Combination Figure 1-2It is known that the monitoring system has a weight sensor installed on the base 1 (installed in the weighing platform 13), a temperature monitoring device (such as a thermocouple and a resistance temperature detector) installed in the heating tank 2, a timer, and an operation panel 18 with a display screen and a controller. The signal output terminals of the weight sensor, the timer, and the temperature monitoring device are all connected to the signal output terminal of the controller. The control input terminals of the electric control valve 5 and the heating tank 2 are electrically connected to the control output terminal of the controller. The controller is used to control the heating of the heating tank 2 and the opening and closing of the electric control valve 5.

[0029] The receiving container 3 is set on the weighing platform and directly opposite the discharge pipe 4. During operation, when mortar flows into the receiving container 3, the weight sensor transmits the weight signal to the controller, and the timer starts counting simultaneously. When the set test time is reached, the valve on the discharge pipe 4 is closed. This achieves automatic reading of flowability test data, standardizes the reading criteria, reduces errors caused by human factors, and improves the accuracy of test results.

[0030] In actual installation, the monitoring system controller is equipped with a control panel, through which parameters such as temperature and time can be set for easy operation.

[0031] The heating tank 2 of this invention has heat preservation performance and the temperature can be set, which can examine the effect of different temperatures on the fluidity of self-compacting cement mortar, thereby reducing the safety hazards caused by temperature factors; furthermore, this invention has a stirring blade 9 and a stirring head 10 installed in the heating tank 2, which can realize automatic stirring and can also be used as a storage container to examine the effect of different residence times on the fluidity of mortar.

[0032] Combination Figure 1 As can be seen, the self-compacting cement mortar fluidity testing device of this utility model also includes a cleaning unit. The cleaning unit includes a pressure-resistant water tank 14 set on the bottom surface of the mounting plate 6. Multiple high-pressure nozzles 15 are set at the bottom of the pressure-resistant water tank 14. The upper part of the pressure-resistant water tank 14 has a water inlet, which is connected to a faucet through a connecting pipe. In addition, a tap water pressurization device 19 is also set at the water inlet to provide the required water pressure for the high-pressure nozzles. The pressure-resistant water tank 14 is staggered with the stirring shaft 7 to effectively ensure the normal rotation of the stirring shaft 7.

[0033] In actual installation, there can be two pressure-resistant water tanks 14, located on the front and rear sides of the stirring shaft 7 respectively; of course, the water tank 14 can also be replaced by a water pipe connected to a faucet, with part of the water pipe fixed under the mounting plate 6, and then multiple high-pressure nozzles 15 installed on that part. After testing, the heating tank 2 can be cleaned using the cleaning unit. During the cleaning process, the cleaning wastewater is discharged from the discharge pipe 4, achieving simultaneous cleaning and wastewater discharge, eliminating the need for manual cleaning, improving cleaning efficiency, and reducing the workload of manual cleaning.

[0034] Combination Figure 1 It can be seen that a bracket is provided on the base 1. The bracket has a pair of vertically mounted mounting rods 16 on the base 1 and an arc-shaped fixing plate 17 horizontally fixed to the mounting rods 16. The outer wall of the heating tank 2 is fixed on the arc-shaped fixing plate 17, which effectively ensures the fixing effect of the heating tank 2.

[0035] The working principle and process of this utility model are as follows: Set the heating temperature of the heating tank 2; then use the hydraulic cylinder 11 to adjust the height of the mounting plate 6 so that the mounting plate 6 moves upward, and then pour the raw materials into the heating tank 2; then use the hydraulic cylinder 11 to adjust the mounting plate 6 so that it moves downward, so that the stirring shaft 7 and the stirring blade 9 are located inside the heating tank 2, start the stirring motor 8 to stir, and after stirring is completed, move the mounting plate 6 upward so that the stirring blade 9 moves out of the cement mortar; then open the valve, and the cement mortar flows from the discharge pipe 4 into the receiving container 3 below. At this time, the weight sensor transmits the detected weight signal to the controller, the controller processes the received signal and obtains the weight data, and the timer starts timing at the same time; when the preset weight is reached, the electric control valve 5 is closed.

[0036] Finally, it should be emphasized that the above description is merely a preferred embodiment of this utility model and is not intended to limit this utility model. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still make modifications to the technical solutions described in the foregoing embodiments without creative effort, or make equivalent substitutions for some of the technical features. Therefore, any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A device for testing the fluidity of self-compacting cement mortar, characterized in that: Includes the base; also includes A heating tank is mounted on the base, and a valve is installed on the discharge pipe at the bottom of the heating tank; The stirring mechanism has a mounting plate horizontally mounted above the heating tank and a stirring motor mounted on the mounting plate. The stirring shaft of the stirring motor is vertically downward, and stirring blades and a stirring head are mounted on the stirring shaft, with the stirring head located at the bottom of the stirring shaft. The monitoring system includes a weight sensor mounted on the base, a temperature monitoring device mounted inside the heating tank, a timer, and an operation panel with a display screen and a controller. The signal output terminals of the weight sensor, timer, and temperature monitoring device are all connected to the signal output terminal of the controller. The receiving container is mounted on the weight sensor and is directly opposite the discharge pipe.

2. The self-compacting cement mortar fluidity testing device according to claim 1, characterized in that: It also includes a lifting power source for driving the mounting plate to rise and fall, wherein the lifting power source is a linear module or lead screw transmission pair driven by a motor, or a cylinder, or a hydraulic cylinder.

3. The self-compacting cement mortar fluidity testing device according to claim 2, characterized in that: The lifting power source includes at least two hydraulic cylinders spaced apart. The hydraulic cylinders are vertically arranged and their cylinder bodies are fixedly connected to the base. The mounting plate is connected to the piston rod of the hydraulic cylinder. At least two columns are provided on the base, and the columns extend upward through the mounting plate.

4. The self-compacting cement mortar fluidity testing device according to claim 1, characterized in that: It also includes a cleaning unit, which includes a pressure-resistant water tank disposed on the bottom surface of the mounting plate. The inlet of the pressure-resistant water tank is equipped with a pressurizing device, and the bottom of the pressure-resistant water tank is equipped with multiple high-pressure nozzles.

5. The self-compacting cement mortar fluidity testing device according to claim 1, characterized in that: The base is provided with a bracket, which has a vertical mounting rod on the base and an arc-shaped fixing plate horizontally fixed to the mounting rod. The outer wall of the heating tank is fixed to the arc-shaped fixing plate.

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