Concrete mixture bleeding rate detection device

Abstract

The utility model relates to the technical field of concrete mixture detection equipment, and particularly discloses a concrete mixture bleeding rate detection device, which is characterized in that supporting legs are arranged at four corners of the bottom of a detection box, a feeding hole is formed in the top of the detection box, and a refrigeration air conditioner and a humidifier are arranged on the inner wall of the detection box; the volumetric flask is arranged on the electronic balance; the heating water tank is arranged in the detection box, and a placement rack is arranged at the lower part of the heating water tank and provided with a temperature and humidity sensor; the detection cylinder is arranged on the placing rack; the motor is arranged at the bottom of the detection cylinder, and an output shaft is upwards connected with a rotating cylinder; the outer wall of the rotating cylinder contacts with the inner wall of the detection cylinder; a round hole is formed in the middle of the detection cylinder, and a water collecting ring is arranged on the outer wall and connected to the volumetric flask through a water conveying pipe. A temperature and humidity sensor is arranged in the detection cylinder to control a constant-temperature and constant-humidity environment; meanwhile, the rotating cylinder rotates to convey bleeding water of the concrete mixture into the volumetric flask, and the electronic balance is used for weighing the volumetric flask, so that manual operation is avoided, and the stability of a detection result is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of concrete mixture detection equipment, and particularly relates to a bleeding rate detection device for concrete mixture. Background Art

[0002] During the transportation, vibration, and pumping of concrete, the phenomenon that coarse aggregates sink and water floats is called bleeding of concrete. The bleeding rate is the ratio of the bleeding amount to the water content of the concrete mixture.

[0003] The existing detection method for concrete mixture is as follows: According to the design mix ratio, the concrete binder, water, fine aggregate, coarse aggregate, and admixture are stirred and formed in a concrete mixer according to the specified time, and the slump is detected. When the slump < 90 mm, the mixture is loaded into the sample barrel at one time, the vibrating table is started, and the vibration should continue until the surface shows slurry, and over-vibration should be avoided; when the slump > 90 mm, it is tamped with a tamper.

[0004] The concrete mixture should be loaded in two layers. For each layer of concrete mixture loaded, the tamper should be inserted evenly in a spiral shape from the edge to the center 25 times. When tamping the bottom layer, the tamper should penetrate the entire depth. When tamping the second layer, the tamper should penetrate this layer to the surface of the next layer; after each layer is tamped, the outer wall of the container should be gently tapped with a rubber hammer 5 - 10 times until the tamping holes on the surface of the mixture disappear and no large air bubbles are visible; make the surface of the concrete mixture 30 mm ± 3 mm lower than the surface of the sample cylinder, and level it with a trowel. Immediately weigh and record the total mass of the sample cylinder and the sample after leveling. The surface of the sample should be lower than the edge of the cylinder mouth. Starting from the time of plastering, within the first 60 minutes, the bleeding water is sucked and removed every 10 minutes, and then the water is absorbed every 20 minutes until there is no bleeding for three consecutive times. 5 minutes before each water absorption, one side of the bottom of the cylinder should be raised to make the cylinder inclined for easy water absorption. After water absorption, the cylinder should be gently placed flat and covered. The water sucked out each time is injected into a graduated cylinder with a stopper, and finally the total bleeding amount is calculated.

[0005] The existing detection methods rely on manual operation and manual measurement, which may lead to the detection results being affected by the skills and experience of the operators, and it is difficult to ensure consistency and accuracy. The traditional detection methods are usually carried out in an indoor environment and are easily affected by temperature and humidity changes. Such environmental fluctuations may lead to unstable and inaccurate detection results, thus affecting the measurement results of the bleeding rate. Content of the Utility Model

[0006] The purpose of the utility model is to provide a bleeding rate detection device for concrete mixture to avoid large errors caused by manual operation during detection and affect the stability of the bleeding rate measurement results.

[0007] To solve the above technical problems, the technical solution adopted by the present utility model is as follows: A bleeding rate detection device for concrete mixture, comprising an electronic balance, a volumetric flask, a detection box and a detection structure;

[0008] The detection box has support legs provided at the four corners of the bottom, a feeding port provided at the top, and a refrigeration air conditioner and a humidifier provided on the inner wall;

[0009] The electronic balance is provided at the lower end of the detection box;

[0010] The volumetric flask is provided on the electronic balance;

[0011] The detection structure includes a detection cylinder, a heating water tank, heating strips and a motor; the heating water tank is provided in the detection box, the upper end of the heating water tank is open, a placement rack is provided at the lower part, and a temperature and humidity sensor is provided on the placement rack; the heating strips are provided at the bottom of the heating water tank; the detection cylinder is provided on the placement rack, and the bottom of the detection cylinder is in contact with the heating strips; the motor is provided at the bottom of the detection cylinder, and the output shaft is arranged upward and connected with a rotating cylinder; the upper part of the rotating cylinder is open, and the outer wall is in contact with the inner wall of the detection cylinder; a round hole is provided in the middle of the detection cylinder, the round hole is located above the rotating cylinder, and a water collecting ring is provided on the outer wall to collect the water seeping out from the round hole, and the water collecting ring is connected to the volumetric flask through a water delivery pipe.

[0012] As a further technical solution of the above scheme, a sealing strip is provided between the water collecting ring and the rotating cylinder.

[0013] As a further technical solution of the above scheme, a round hole belt is provided in the middle of the detection cylinder, the round hole is provided on the round hole belt, and the bottom of the round hole belt is flush with the top of the rotating cylinder.

[0014] As a further technical solution of the above scheme, a one-way water permeable membrane is provided in the round hole.

[0015] As a further technical solution of the above scheme, a plurality of detection cylinders and volumetric flasks are provided and used in pairs.

[0016] As a further technical solution of the above scheme, a control panel is provided on the outer wall of the detection box, and a temperature and humidity switch, a display and a water absorption switch are provided on the control panel; the temperature and humidity switch is electrically connected to the refrigeration air conditioner, the humidifier and the heating strips; the display is electrically connected to the temperature and humidity sensor and the electronic balance; the water absorption switch is electrically connected to the motor.

[0017] As a further technical solution of the above scheme, a base is further included, the support legs of the detection box are provided on the base, and the electronic balance is also provided on the base, below the detection box.

[0018] Compared with the prior art, the utility model has the following advantages and beneficial effects: A temperature and humidity sensor is arranged in the detection cylinder to control the constant temperature and humidity environment; at the same time, the rotating cylinder is used to transport the bleeding water of the concrete mixture to the volumetric flask, and the volumetric flask is weighed by an electronic balance, avoiding manual operation and improving the stability of the detection results. Brief Description of the Drawings

[0019] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0020] Figure 2 It is a structural schematic diagram inside the detection box.

[0021] Figure 3 It is a three-dimensional structural schematic diagram of the detection cylinder.

[0022] The interpretations of each label in the figure are as follows: electronic balance - 1; volumetric flask - 2; detection box - 3; support leg - 31; feeding port - 32; refrigeration air conditioner - 33; humidifier - 34; detection cylinder - 41; heating water tank - 42; heating strip - 43; motor - 44; placement rack - 45; temperature and humidity sensor - 46; rotating cylinder - 47; round hole - 48; water collecting ring - 49; round hole belt - 410; sealing strip - 5; control panel - 6; temperature and humidity switch - 61; display - 62; water absorption switch - 63; one-way water permeable membrane - 7; base - 8. Detailed Embodiment

[0023] Next, the technical solutions in the embodiments of the utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the utility model, so as to have a further understanding of the concept of the utility model, the technical problems to be solved, the technical features constituting the technical solutions, and the technical effects brought.

[0024] As Figures 1 - 3 shown, a bleeding rate detection device for concrete mixture includes an electronic balance 1, a volumetric flask 2, a detection box 3 and a detection structure;

[0025] The detection box 3 is provided with support legs 31 at the four corners of the bottom, a feeding port 32 at the top, and a refrigeration air conditioner 33 and a humidifier 34 on the inner wall;

[0026] The electronic balance 1 is arranged at the lower end of the detection box 3;

[0027] The volumetric flask 2 is arranged on the electronic balance 1;

[0028] Detection structure, including a detection cylinder 41, a heating water tank 42, a heating strip 43 and a motor 44; the heating water tank 42 is arranged inside the detection box 3, the upper end of the heating water tank 42 is open, a placement rack 45 is provided at the lower part, and a temperature and humidity sensor 46 is provided on the placement rack 45; the heating strip 43 is arranged at the bottom of the heating water tank 42; the detection cylinder 41 is arranged on the placement rack 45, and the bottom of the detection cylinder 41 is in contact with the heating strip 43; the motor 44 is arranged at the bottom of the detection cylinder 41, and the output shaft is arranged upward and connected with a rotating cylinder 47; the upper part of the rotating cylinder 47 is open, and the outer wall is in contact with the inner wall of the detection cylinder 41; a round hole 48 is provided in the middle of the detection cylinder 41, the round hole 48 is located above the rotating cylinder 47, and a water collecting ring 49 is provided on the outer wall to collect the water seeping out from the round hole 48, and the water collecting ring 49 is connected to the volumetric flask 2 through a water delivery pipe.

[0029] When using this device, first place the electronic balance 1 and the volumetric flask 2 under the detection box 3, add materials from the feeding port 32 of the detection box 3 to make the concrete mixture enter the rotating cylinder 47; detect the temperature and humidity through the temperature and humidity sensor 46, and adjust through the refrigeration air conditioner 33, the humidifier 34 and the heating strip 43 to ensure that the temperature and humidity in the detection box 3 are in a stable state; start the motor 44 to drive the rotating cylinder 47 to rotate to accelerate the bleeding, and the bleeding passes through the round hole 48 on the side wall of the detection cylinder 41 and then reaches the water collecting ring 49 for collection, and then is transported to the volumetric flask 2 through the water delivery pipe, and the electronic balance 1 weighs the volumetric flask to calculate the bleeding weight; when the bleeding increases by less than 1 g within every 30 minutes, the experiment ends. After detection by the temperature and humidity sensor 46, the detection space can be kept in a constant temperature and humidity state, reducing the error of the detection result, and weighing by the electronic balance 1 can further improve the accuracy.

[0030] As Figure 3 shown, as a preferred embodiment, a sealing strip 5 is provided between the water collecting ring 49 and the rotating cylinder 47. In this embodiment, the bleeding flows from the rotating cylinder 47 into the water collecting ring 49, and the sealing strip 5 is provided to prevent water seepage, which can also further enhance the accuracy of the experimental result.

[0031] As Figure 3 shown, as a preferred embodiment, a round hole belt 410 is provided in the middle of the detection cylinder 41, the round hole 48 is provided on the round hole belt 410, and the bottom of the round hole belt 410 is flush with the top of the rotating cylinder 47. In this embodiment, the round hole belt 410 is arranged along one circle of the detection cylinder 41, and a plurality of round holes 48 are arranged in the round hole belt 410 to accelerate the bleeding efficiency.

[0032] As Figure 3 shown, as a preferred embodiment, a one-way water permeable membrane 7 is provided in the round hole 48. In this embodiment, the bleeding passes through the one-way water permeable membrane 7 through the round hole 48 and then enters the water collecting ring 49. After setting the one-way water permeable membrane 7, small particles can be prevented from passing through to affect the detection.

[0033] As Figure 1 shown, as a preferred embodiment, a plurality of detection cylinders 41 and volumetric flasks 2 are provided and used in pairs. In this embodiment, a plurality of detection cylinders 41 and volumetric flasks 2 are provided for joint detection, improving the detection efficiency.

[0034] As Figure 1 shown, as a preferred embodiment, an outer wall of the detection box 3 is provided with a control panel 6. The control panel 6 is provided with a temperature and humidity switch 61, a display 62 and a water absorption switch 63; the temperature and humidity switch 61 is electrically connected to a refrigeration air conditioner 33, a humidifier 34 and a heating strip 43; the display 62 is electrically connected to a temperature and humidity sensor 46 and an electronic balance 1; the water absorption switch 63 is electrically connected to a motor 44. In this embodiment, first, the temperature and humidity sensor 46 is used to monitor the temperature and humidity inside the detection cylinder 41 and display it on the display 62. An operator controls the refrigeration air conditioner 33, the humidifier 34 and the heating strip 43 through the temperature and humidity switch 61 to regulate the inside of the detection cylinder 41 to make it in a constant temperature and humidity state; the rotation of the motor 44 is controlled through the water absorption switch 63, which is more convenient to operate.

[0035] As Figure 1 shown, as a preferred embodiment, it further includes a base 8. Support legs 31 of the detection box 3 are arranged on the base 8, and the electronic balance 1 is also arranged on the base 8, below the detection box 3. In this embodiment, the base 8 is provided to place the electronic balance 1 and the detection box 3, which is more stable on the same horizontal plane, and it is also more convenient to move after the base 8 is provided.

[0036] In the description of the present utility model, the terms "connection" and "fixation" may be fixed connection, processing and forming, welding, or mechanical connection. The specific meanings of the above terms in the present utility model should be understood according to specific situations.

[0037] In the description of the present utility model, terms such as "center", "upper", "lower", "horizontal", "inner", "outer", etc. indicate the orientation or positional relationship only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation. Therefore, it cannot be understood as a limitation to the present utility model.

[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model, rather than to limit it; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that; they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present utility model.

Claims

1. A device for detecting water bleeding rate of concrete mixture, characterized in that: It comprises an electronic balance (1), a volumetric flask (2), a detection box (3) and a detection structure; The detection box (3) has support legs (31) at the four corners of the bottom, a feeding port (32) at the top, and a refrigeration air conditioner (33) and a humidifier (34) on the inner wall; An electronic balance (1) is arranged at the lower end of the detection box (3); A volumetric flask (2) is placed on the electronic balance (1); The detection structure comprises a detection cylinder (41), a heating water tank (42), a heating strip (43) and a motor (44); the heating water tank (42) is arranged in the detection box (3); the upper end of the heating water tank (42) is open, and a placement rack (45) is arranged at the lower part; the placement rack (45) is provided with a temperature and humidity sensor (46); the heating strip (43) is arranged at the bottom of the heating water tank (42); the detection cylinder (41) is arranged on the placement rack (45), and the bottom of the detection cylinder (41) and the heating strip (43) are in contact with each other. (43); the motor (44) is arranged at the bottom of the detection cylinder (41), and the output shaft is upwardly arranged to be connected to the rotating cylinder (47); the upper part of the rotating cylinder (47) is open, and the outer wall is in contact with the inner wall of the detection cylinder (41); a circular hole (48) is provided in the middle of the detection cylinder (41), and the circular hole (48) is located above the rotating cylinder (47); a water collecting ring (49) is provided on the outer wall to collect water seeping from the circular hole (48), and the water collecting ring (49) is connected to the volumetric flask (2) through a water pipe.

2. A device for detecting water bleeding rate of concrete mixture according to claim 1, characterized in that: A sealing strip (5) is provided between the water collecting ring (49) and the rotating cylinder (47).

3. A device for detecting water bleeding rate of concrete mixture according to claim 1, characterized in that: A circular hole belt (410) is provided in the middle of the detection cylinder (41), and the circular hole (48) is arranged on the circular hole belt (410). The bottom of the circular hole belt (410) is flush with the top of the rotating cylinder (47).

4. A device for detecting water bleeding rate of concrete mixture according to claim 1, characterized in that: A one-way water-permeable membrane (7) is provided in the circular hole (48).

5. A device for detecting water bleeding rate of concrete mixture according to claim 1, characterized in that: A plurality of detection cylinders (41) and volumetric flasks (2) are provided and are used in pairs.

6. A device for detecting water bleeding rate of concrete mixture according to claim 1, characterized in that: The outer wall of the detection box (3) is provided with a control panel (6), and the control panel (6) is provided with a temperature and humidity switch (61), a display (62), and a water absorption switch (63); the temperature and humidity switch (61) is electrically connected to the refrigeration air conditioner (33), the humidifier (34), and the heating strip (43); the display (62) is electrically connected to the temperature and humidity sensor (46) and the electronic balance (1); and the water absorption switch (63) is electrically connected to the motor (44).

7. A device for detecting water bleeding rate of concrete mixture according to claim 1, characterized in that: It also includes a base (8), the support legs (31) of the detection box (3) are arranged on the base (8), and the electronic balance (1) is also arranged on the base (8) and is located below the detection box (3).

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