Testing device for instantaneously testing fluidity of high-fluidity cement paste
By designing a instantaneous test device, using electric valves and electronic timing equipment to automatically time, the problem of human error in cement slurry flow test is solved, the test accuracy and accuracy are improved, and it is suitable for flow measurement of high-flow cement slurry .
Patent Information
- Application Number
- CN202420836072.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-22
- Publication Date
- 2025-01-10
- Estimated Expiration
- 2034-04-22
AI Technical Summary
The existing cement slurry flow test methods have artificial errors, especially when manual operation is required in reverse cone testing, resulting in inaccurate timing and affecting the accuracy of the test results.
A test device for instantaneous testing of the flow of high-flow cement slurry is designed, including support frames, quantitative inverted cones, electric valves, containers, weight sensors and electronic timing equipment. Through the cooperation of electric valves and electronic timing equipment, it will automatically Realize start and end timing to reduce human error.
The accuracy and accuracy of the test data are improved, and the uniform and dense performance under concrete construction conditions is ensured. The test can be completed by a tester and the test time node can be started simultaneously to obtain accurate data.
Smart Images
Figure CN222337007U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of road engineering material testing equipment, and in particular relates to a testing device for instantaneously testing the fluidity of high-fluidity cement paste. Background Art
[0002] As a semi-flexible pavement, the poured composite concrete pavement combines the advantages of asphalt pavement and cement pavement. It has advantages that asphalt pavement and cement pavement do not have, and is an effective way to improve the service life and service quality of roads. The poured composite concrete pavement is formed by pouring grouting materials with cement slurry as the main component into the macroporous base asphalt mixture. It relies on the skeleton embedding structure of the macroporous asphalt mixture and the bonding reinforcement effect of the cement grouting material to improve the road's resistance to permanent deformation. It has the characteristics of "both rigidity and flexibility". As an important component of the poured composite concrete pavement, the fluidity test of the cement grouting material is particularly important considering the workability requirements of the pavement grouting construction.
[0003] At present, the test methods for the fluidity of cement paste are mainly divided into two methods: the jumping table test and the inverted cone test. Usually, the jumping table test method is generally used for the fluidity test of cement mortar. The jumping table test method has obvious limitations. This test method is only applicable to cement mortar materials with poor fluidity. For cement mortar or cement paste with good fluidity, the fluidity test method is generally the inverted cone test method. This test method evaluates the fluidity of cement slurry by measuring the time required for a specified volume of cement slurry to flow out of the inverted cone. However, when using the inverted cone to test the fluidity, according to the specifications, it is necessary to manually open the valve under the inverted cone and press the stopwatch to start timing at the same time. At the moment when the inverted cone outlet is observed to be light-transmitting, the stopwatch is manually pressed to stop timing. Therefore, when using traditional inverted cone equipment to test the fluidity of cement slurry, the tester needs to use a stopwatch to time, which inevitably leads to human errors. Summary of the invention
[0004] To solve the problems mentioned in the above background technology; the purpose of the utility model is to provide a test device for instantaneously testing the fluidity of high-fluidity cement slurry, which only requires one tester to complete the test, reducing the number of personnel required for the test and improving the test efficiency.
[0005] A test device for instantaneously testing the fluidity of high-fluidity cement slurry comprises a support frame, a quantitative inverted cone cylinder, an electric valve, a container, a weight sensor and an electronic timing device; a quantitative inverted cone cylinder is arranged on the top of the support frame, a container is arranged on the bottom of the support frame, the container and the quantitative inverted cone cylinder are arranged coaxially, the discharge port of the quantitative inverted cone cylinder is arranged toward the container, an electric valve is arranged on the discharge port of the quantitative inverted cone cylinder, the electric valve is sealed and connected to the discharge port of the quantitative inverted cone cylinder, a weight sensor is arranged on the inner bottom of the container, the weight sensor and the electric valve are connected to the electronic timing device through a wire, and the electronic timing device is arranged on the outer side wall of the support frame.
[0006] As a preferred embodiment: the quantitative inverted cone cylinder includes a discharge pipe, a conical tube and a quantitative tube, which are coaxially arranged from bottom to top, the upper end of the discharge pipe is connected to the small end of the conical tube, and the large end of the conical tube is connected to the quantitative tube.
[0007] As a preferred solution: a scale line layer is provided on the inner side wall of the quantitative tube.
[0008] As a preferred solution: an overflow pipe is provided on the side wall of the quantitative pipe, and an overflow valve is installed on the overflow pipe.
[0009] As a preferred solution: a discharge pipe is provided at the lower end of the container, the discharge pipe is communicated with the interior of the container, and a discharge valve is installed on the discharge pipe.
[0010] As a preferred solution: the support frame includes an outer frame body, a base, an inverted cone mounting frame, and a container mounting frame; the base is installed at the bottom of the outer frame body, the inverted cone mounting frame is installed at the upper end of the outer frame body, and the container mounting frame is installed on the lower side of the outer frame body, and the middle of the inverted cone mounting frame and the container mounting frame are provided with mounting grooves.
[0011] As a preferred solution: a plurality of anti-slip grooves are provided at the bottom of the base.
[0012] As a preferred solution: the quantitative inverted cone cylinder is provided with a wall-milling plug, which includes an upper sleeve, a lower sleeve, an elastic sleeve and a plug rod. The shape of the upper sleeve is matched with the shape of the top inner wall of the quantitative inverted cone cylinder, and the shape of the lower sleeve is matched with the shape of the bottom inner wall of the quantitative inverted cone cylinder. An elastic sleeve is provided between the upper sleeve and the lower sleeve, and the inner wall of the elastic sleeve is a milling wall matched with the inner wall of the quantitative inverted cone cylinder. The plug rod is a hollow rod body, which is coaxially inserted between the upper sleeve, the elastic sleeve and the lower sleeve, and the lower end of the plug rod is fixedly connected to the lower sleeve.
[0013] As a preferred solution: a mounting plate is installed on the back of the electronic timing device, and fixing grooves are provided on the upper and lower sides of the mounting plate.
[0014] Compared with the prior art, the beneficial effects of the utility model are:
[0015] 1. The utility model can not only time the fluidity of cement mortar, but also record the mass of cement paste flowing out of the inverted cone through the cooperation between the support frame, quantitative inverted cone cylinder, electric valve, container, weight sensor and electronic timing equipment. Combined with the volume of cement paste, the test results can be verified. The start and end timing are automatically realized by the change of electronic signals, which reduces human errors and improves the accuracy of test data.
[0016] 2. The utility model can ensure that the concrete mixture is convenient for the operation of various construction processes under the predetermined construction conditions to ensure the performance of uniform and dense concrete, and with the cooperation of the wall rolling plug, it can achieve the effect of concentrated slurry rolling at the end of the test. The entire operation process only requires one tester to complete the test, ensuring the accurate start of the test time node, and the start time is synchronized with the cement slurry start, which improves the accuracy of the test and is conducive to obtaining accurate relevant data in the later stage. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] For ease of explanation, the present invention is described in detail by the following specific embodiments and drawings.
[0018] Figure 1 This is a schematic diagram of the main structure of the utility model;
[0019] Figure 2 It is a schematic diagram of the three-dimensional structure of the quantitative inverted cone cylinder in the utility model;
[0020] Figure 3 It is a three-dimensional structural schematic diagram of the container in the utility model;
[0021] Figure 4 It is a three-dimensional structural schematic diagram of the support frame in the utility model;
[0022] Figure 5 It is a three-dimensional structural schematic diagram of the electronic timing device in the utility model;
[0023] Figure 6 Schematic diagram of the three-dimensional structure of the tapered tube;
[0024] Figure 7 It is a three-dimensional structural schematic diagram of the wall-milling plug when used with the conical tube in the quantitative inverted cone cylinder, in which the wall-milling plug is in the first limit state;
[0025] Figure 8 It is a schematic diagram of the three-dimensional structure of the wall-milling plug in the second limit state;
[0026] Fig. 9 It is a schematic diagram of the three-dimensional structure when the wall-milling plug is used in conjunction with the tapered tube in the quantitative inverted cone cylinder. In the figure, the wall-milling plug is in the second limit state.
[0027] In the figure: 1-support frame; 2-quantitative inverted cone; 3-electric valve; 4-container; 5-weight sensor; 6-electronic timing device; 8-wall milling plug;
[0028] 1-1-external frame; 1-2-base; 1-3-inverted cone mounting frame; 1-4-container mounting frame;
[0029] 21-discharging pipe; 22-conical pipe; 23-quantitative pipe;
[0030] 2-1- scale line layer; 2-2- overflow pipe; 2-3- overflow valve;
[0031] 4-1-discharge pipe; 4-2-discharge valve;
[0032] 6-1-installation plate; 6-2-fixing slot;
[0033] 8-1-upper ferrule; 8-2-lower ferrule; 8-3-elastic sleeve; 8-4-plug rod; DETAILED DESCRIPTION
[0034] In order to make the purpose, technical scheme and advantages of the utility model clearer, the utility model is described below by the specific embodiments shown in the accompanying drawings. However, it should be understood that these descriptions are only exemplary and are not intended to limit the scope of the utility model. The structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions that can be implemented in the utility model, so they have no technical substantive significance. Any structural modification, change in proportional relationship or adjustment of size, without affecting the effects that can be produced by the utility model and the purposes that can be achieved, should still fall within the scope of the technical content disclosed by the utility model. In addition, in the following description, the description of known structures and technologies is omitted to avoid unnecessary confusion of the concept of the utility model.
[0035] It should also be noted that, in order to avoid obscuring the present invention due to unnecessary details, only structures and / or processing steps closely related to the scheme according to the present invention are shown in the accompanying drawings, while other details that are not closely related to the present invention are omitted.
[0036] Specific implementation method 1, combined with Figures 1 to 9Describe this implementation mode. This specific implementation mode adopts the cooperation of electric valve and electronic timing equipment to realize detection. Specifically, the following technical scheme is adopted: it includes support frame 1, quantitative inverted cone cylinder 2, electric valve 3, container 4, weight sensor 5, and electronic timing equipment 6; the upper side of the support frame 1 is equipped with quantitative inverted cone cylinder 2, and the quantitative inverted cone cylinder 2 can measure the volume of raw materials; the lower side of the support frame 1 is equipped with container 4, and the container 4 is coaxially arranged with the quantitative inverted cone cylinder 2; the discharge port of the quantitative inverted cone cylinder 2 is equipped with electric valve 3, and the electric valve 3 can realize the opening and closing of the quantitative inverted cone cylinder 2; the electric valve 3 and the quantitative inverted cone cylinder 2 are connected. The discharge port of the cylinder 2 is sealed, and a weight sensor 5 is installed at the inner bottom of the container 4. The weight sensor 5 has a range of 3kg to 50kg, is made of aluminum alloy, has an anodized surface, has a simple structure, is easy to install, has good bending and torsion resistance, and has an IP66 protection level. It can be used in the fluidity test of cement slurry; the weight sensor 5 and the electric valve 3 are both connected to the electronic timing device 6 through a wire, and the electronic timing device 6 is installed on the outer wall of the support frame 1. The electronic timing device 6 uses an electronic circuit to measure time. The device can receive signals from other electronic sensors such as weight sensors to control timing. The electronic timing device 6 is an existing device, and its working principle is the same as that of the existing electronic timing device.
[0037] Specific implementation method 2: This implementation method is a further limitation of the specific implementation method 1. Figure 4 As shown, this specific embodiment realizes the installation of the quantitative inverted cone cylinder 2 and the container 4 through a support frame, and the specific structure is as follows: the support frame 1 includes an outer frame body 1-1, a base 1-2, an inverted cone mounting frame 1-3, and a container mounting frame 1-4; the base 1-2 is installed at the bottom of the outer frame body 1-1, the inverted cone mounting frame 1-3 is installed at the upper end of the outer frame body 1-1, and the container mounting frame 1-4 is installed on the lower side of the outer frame body 1-1, and the middle parts of the inverted cone mounting frame 1-3 and the container mounting frame 1-4 are provided with mounting grooves, which can realize the installation of the quantitative inverted cone cylinder 2 and the container 4; the bottom of the base 1-2 is provided with a plurality of anti-slip grooves, which can improve the anti-slip property and improve the stability.
[0038] Specific implementation method three: This implementation method is a further limitation of specific implementation methods one or two, combined with Figure 2As shown, the quantitative inverted cone cylinder 2 in this specific embodiment includes a discharge pipe 21, a conical tube 22, and a quantitative tube 23; the conical tube 22 is installed at the upper end of the discharge pipe 21, the discharge pipe 21 is a straight tube body, and the quantitative tube 23 is installed at the upper end of the conical tube 22; a scale line layer 2-1 is provided on the inner side wall of the quantitative tube 23; an overflow pipe 2-2 is opened on the side wall of the quantitative tube 23, and an overflow valve 2-3 is installed on the overflow pipe 2-2; the overflow pipe 2-2 is set at the scale line of 1725mL, when 1725mL is needed, when pouring the raw material, the overflow valve 2-3 is opened, and at this time there is raw material The material can flow out. The quantitative inverted cone cylinder 2 is generally made of glass, stainless steel, aluminum or other metals. The specific dimensions are a top diameter of 178mm, an outlet diameter of 13mm, and from top to bottom, the quantitative tube 23 is 75mm high, the conical tube 22 is 192mm high, the discharge pipe 21 is 38mm high, and a 1725mL scale line is engraved inside the inverted cone, indicating that the slurry volume inside the inverted cone at this scale line is 1725mL. At the same time, the overflow pipe 2-2 is set at the 1725mL scale line, and there are scale lines above and below the 1725mL scale line. The normal use is 1725mL.
[0039] Specific implementation method 4: This implementation method is a further limitation of specific implementation methods 1, 2 or 3. Figure 6 , Figure 7 , Figure 8 and Fig. 9As shown, the quantitative inverted cone cylinder 2 in this embodiment is equipped with a wall-milling plug 8, which is used for rolling the cement residual slurry attached to the inner wall of the conical tube 22 in the quantitative inverted cone cylinder 2 in the middle and late stages of the test. The wall-milling plug 8 includes an upper clamping sleeve 8-1, a lower clamping sleeve 8-2, an elastic sleeve 8-3 and a plug rod 8-4. The upper clamping sleeve 8-1 and the lower clamping sleeve 8-2 are sleeves supported by plastic or other hard materials, which play the role of internal support and are respectively used to clamp the top inner wall and the bottom inner wall of the conical tube 22. The shape of the upper clamping sleeve 8-1 is matched with the shape of the top inner wall of the quantitative inverted cone cylinder 2. The optimal position of the upper clamping sleeve 8-1 is not less than half of the axial length of the conical tube 22, that is, the outer diameter of the upper clamping sleeve 8-1 is greater than or equal to the inner diameter of the middle position of the conical tube 22, and the shape of the lower clamping sleeve 8-2 is the same as the bottom inner wall of the quantitative inverted cone cylinder 2. The wall shapes are matched, the outer diameter of the lower ferrule 8-2 is larger than the inner diameter of the discharge pipe 21, the lower ferrule 8-2 is clamped on the top of the discharge pipe 21, and an elastic sleeve 8-3 is arranged between the upper ferrule 8-1 and the lower ferrule 8-2, the elastic sleeve 8-3 is a rubber sleeve, the elastic sleeve 8-3 is a conical sleeve, the large mouth end of the elastic sleeve 8-3 is fixedly connected to the upper ferrule 8-1, and the small mouth end of the elastic sleeve 8-3 is fixedly connected to the lower ferrule 8-2, it has toughness and is slightly elastic, the inner wall of the elastic sleeve 8-3 is a rolled wall matched with the inner wall of the quantitative inverted cone 2, the plug rod 8-4 is a hollow rod body, which is conducive to light transmission when used, and does not block the signal collection of the weight sensor 5 in the conical tube 22, the plug rod 8-4 is coaxially penetrated between the upper ferrule 8-1, the elastic sleeve 8-3 and the lower ferrule 8-2, and the lower end of the plug rod 8-4 is fixedly connected to the lower ferrule 8-2.
[0040] Furthermore, a water-immersing layer may be attached to the inner wall of the elastic sleeve 8 - 3 to further wet the inner wall of the conical tube 22 .
[0041] The working process of the wall milling plug 8 in this embodiment is as follows:
[0042] In the middle and late stages of the cement slurry flowing down from the quantitative inverted cone cylinder 2, the wall-milling plug 8 can be attached to the inner wall of the quantitative inverted cone cylinder 2 to achieve the rolling and concentration of the residual cement slurry attached to the conical tube 22, wherein the upper sleeve 8-1 is fixed on the top inner wall of the conical tube 22, and the inner wall of the elastic sleeve 8-3 and the lower sleeve 8-2 are not in contact with the inner wall of the conical tube 22, which is the first limit state of the wall-milling plug 8. As the plug rod 8-4 moves downward, the lower sleeve 8-2 is driven to move, and the movement of the lower sleeve 8-2 drives the inner wall of the elastic sleeve 8-3 to stick from its large mouth end until its small mouth end drops to the lowest position until the lower sleeve 8-2 is clamped on the bottom inner wall of the conical tube 22, which is the second limit state of the wall-milling plug 8, realizing the rolling process of the conical inner wall of the conical tube 22 by the wall-milling plug 8, and the cement slurry attached to the inner wall of the conical tube 22 is concentrated and squeezed at the discharge pipe 21.
[0043] Specific implementation method 5: This implementation method is a further limitation of specific implementation methods 1, 2, 3 or 4. In this implementation method, Figure 3 As shown, in this specific embodiment, in order to discharge the raw materials after the experiment, the following technical solution is adopted: a discharge pipe 4-1 is opened at the lower end of the container 4, the discharge pipe 4-1 is connected to the interior of the container 4, and a discharge valve 4-2 is installed on the discharge pipe 4-1. After the experiment is completed, the discharge valve 4-2 is opened and the raw materials are discharged from the discharge pipe 4-1.
[0044] Specific implementation method 6: This implementation method is a further limitation of specific implementation methods 1, 2, 3, 4 or 5. In this implementation method, Figure 5 As shown, in this specific embodiment, for the convenience of installation, a mounting plate 6-1 is installed on the back of the electronic timing device 6, and fixing grooves 6-2 are provided on the upper and lower sides of the mounting plate 6-1, so that the mounting plate 6-1 can be quickly installed.
[0045] The specific steps of testing the fluidity of cement paste with high fluidity in this specific implementation method are as follows:
[0046] (1) Prepare cement paste in accordance with the "Test Code for Cement and Cement Concrete for Highway Engineering JTG 3420-2020";
[0047] (2) Before conducting the fluidity test, wet the inner wall of the quantitative inverted cone 2 with water to make the surface wet;
[0048] (3) Install the quantitative inverted cone 2 and the container 4 on the support frame 1 to ensure that the test device is level and stable;
[0049] (4) Close the electric valve 3 at the outlet of the quantitative inverted cone cylinder 2, and slowly add the prepared cement slurry into the quantitative inverted cone cylinder 2. When approaching the scale, the speed should be slowed down until the volume of the cement slurry in the inverted cone reaches 1725mL±5mL (when the 1725mL scale is used, the overflow is realized through the overflow pipe 2-2, which can improve the accuracy of the volume data);
[0050] (5) Press the button at the inverted cone valve to control the electric valve 3 at the opening to open. At the same time, the sensor data line at the button transmits the electronic signal to the electronic timing device 6, and the device starts timing;
[0051] (6) The cement paste continuously flows out of the quantitative inverted cone 2 and falls into the container 4. The weight sensor 5 installed inside the container 4 continuously converts the received weight signal into an electronic signal, and transmits the signal to the electronic timer through the sensor data line to determine that the weight of the cement paste flowing out is constantly changing. When the cement paste flowing out of the inverted cone is intermittent, and light is visible from the upper end of the quantitative inverted cone 2 to the lower end, the signal detected by the weight sensor 5 stops changing, and the electronic timing device 6 automatically stops timing according to the pre-set conditions (i.e., the weight is no longer increasing continuously);
[0052] (7) The electronic timing device 6 will automatically record the weight value and the timing time when the timing is stopped, which correspond to the mass of the cement paste flowing out of the inverted cone and the fluidity of the cement paste respectively.
Claims
1. A test device for instantaneously testing the fluidity of high-fluidity cement paste, characterized in that: The invention comprises a support frame (1), a quantitative inverted cone cylinder (2), an electric valve (3), a container (4), a weight sensor (5) and an electronic timing device (6); the top of the support frame (1) is provided with a quantitative inverted cone cylinder (2), the bottom of the support frame (1) is provided with a container (4), the container (4) and the quantitative inverted cone cylinder (2) are coaxially arranged, the discharge port of the quantitative inverted cone cylinder (2) is arranged toward the container (4), the discharge port of the quantitative inverted cone cylinder (2) is provided with an electric valve (3), the electric valve (3) is sealedly connected to the discharge port of the quantitative inverted cone cylinder (2), the inner bottom of the container (4) is provided with a weight sensor (5), the weight sensor (5) and the electric valve (3) are both connected to the electronic timing device (6) through a wire, and the electronic timing device (6) is arranged on the outer side wall of the support frame (1).
2. A test device for instantaneously testing the fluidity of high-fluidity cement paste according to claim 1, characterized in that: The quantitative inverted cone cylinder (2) comprises a discharge pipe (21), a conical tube (22) and a quantitative tube (23), wherein the discharge pipe (21), the conical tube (22) and the quantitative tube (23) are coaxially arranged in sequence from bottom to top, wherein the upper end of the discharge pipe (21) is connected to the small end of the conical tube (22), and the large end of the conical tube (22) is connected to the quantitative tube (23).
3. A test device for instantaneously testing the fluidity of high-fluidity cement paste according to claim 2, characterized in that: A scale line layer (2-1) is provided on the inner side wall of the quantitative tube (23).
4. A test device for instantaneously testing the fluidity of high-fluidity cement paste according to claim 3, characterized in that: An overflow pipe (2-2) is provided on the side wall of the quantitative pipe (23), and an overflow valve (2-3) is installed on the overflow pipe (2-2).
5. The test device for instantaneously testing the fluidity of high-fluidity cement paste according to claim 1, characterized in that: A discharge pipe (4-1) is provided at the lower end of the container (4), the discharge pipe (4-1) is communicated with the interior of the container (4), and a discharge valve (4-2) is installed on the discharge pipe (4-1).
6. A test device for instantaneously testing the fluidity of high-fluidity cement paste according to claim 1, characterized in that: The support frame (1) comprises an outer frame body (1-1), a base (1-2), an inverted cone mounting frame (1-3), and a container mounting frame (1-4); the base (1-2) is mounted on the bottom of the outer frame body (1-1), the inverted cone mounting frame (1-3) is mounted on the upper end of the outer frame body (1-1), and the container mounting frame (1-4) is mounted on the lower side of the outer frame body (1-1); and mounting grooves are provided in the middle of the inverted cone mounting frame (1-3) and the container mounting frame (1-4).
7. A test device for instantaneously testing the fluidity of high-fluidity cement paste according to claim 6, characterized in that: The bottom of the base (1-2) is provided with a plurality of anti-slip grooves.
8. The test device for instantaneously testing the fluidity of high-fluidity cement paste according to claim 1, characterized in that: The quantitative inverted cone cylinder (2) is provided with a wall-milling plug (8), which comprises an upper clamping sleeve (8-1), a lower clamping sleeve (8-2), an elastic sleeve (8-3) and a plug rod (8-4); the outer shape of the upper clamping sleeve (8-1) is provided to match the inner shape of the top of the quantitative inverted cone cylinder (2); the outer shape of the lower clamping sleeve (8-2) is provided to match the inner shape of the bottom of the quantitative inverted cone cylinder (2); an elastic sleeve (8-3) is provided between the upper clamping sleeve (8-1) and the lower clamping sleeve (8-2); the inner wall of the elastic sleeve (8-3) is a milling wall that matches the inner wall of the quantitative inverted cone cylinder (2); the plug rod (8-4) is a hollow rod body; the plug rod (8-4) is coaxially inserted between the upper clamping sleeve (8-1), the elastic sleeve (8-3) and the lower clamping sleeve (8-2); the lower end of the plug rod (8-4) is fixedly connected to the lower clamping sleeve (8-2).
9. The test device for instantaneously testing the fluidity of high-fluidity cement paste according to claim 1, characterized in that: A mounting plate (6-1) is mounted on the back of the electronic timing device (6), and fixing grooves (6-2) are provided on the upper and lower sides of the mounting plate (6-1).