Full-automatic fluidity measuring device for cement paste

Abstract

The utility model discloses a full-automatic fluidity measuring device for cement paste, which comprises a storage tank, an inverted cone funnel arranged below a blanking pipe at the bottom of the side wall of the storage tank and a waste collecting tank arranged right below a discharge pipe at the bottom of the inverted cone funnel, and a liquid level sensing device is arranged at the top of the inverted cone funnel. The test controller is used for controlling and connecting electromagnetic valves on the blanking pipe and the discharge pipe, an infrared sensing device is arranged at the bottom end of the discharge pipe, and the infrared sensing device, the test controller and the liquid level sensing device are in signal connection with a test display. And the effects of improving the measurement working efficiency and the measurement accuracy are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of fluidity measurement, in particular to a fully automatic fluidity measurement device for cement paste. Background Art

[0002] The fluidity (consistency) of cement slurry in precast concrete hollow slab beams in road and bridge projects needs to be tested. The test requires the cooperation of two people during operation: one person controls the discharge speed of the cement slurry funnel, and the other person keeps time. They press the stopwatch while opening the funnel until the slurry flows out and the timer stops. During the test, there are two problems under the existing test conditions: first, the equipment needs to observe with the naked eye when adding slurry to the specified position, and the amount of slurry will vary depending on the observation angle; second, the cooperation of two people is required, and even a slight deviation will cause a large difference in the results, resulting in a large human error. Summary of the Invention

[0003] The technical problem to be solved by the utility model is that the fluidity detection of cement paste requires the cooperation of two persons and the detection error is large.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: a fully automatic fluidity measuring device for cement slurry, including a storage tank, an inverted cone funnel arranged below the discharge pipe at the bottom of the side wall of the storage tank, and a waste collection tank arranged directly below the discharge pipe at the bottom of the inverted cone funnel. A liquid level sensing device is provided on the top of the inverted cone funnel, and also includes a test controller for controlling the solenoid valves connected to the discharge pipe and the discharge pipe. An infrared sensing device is provided at the bottom of the discharge pipe, and the signals of the infrared sensing device, the test controller and the liquid level sensing device are connected to the test display.

[0005] Preferably, a cover plate is installed on the top of the storage tank, an agitator is arranged inside the cover plate, and a feeding cover is arranged on the cover plate.

[0006] Preferably, both ends of the material storage trough are semicircular, the rotating shaft of the agitator is coaxial with the end of the material storage trough, and the rotation direction of the agitator on the cover plate is the same.

[0007] Preferably, a sealing ring is provided at the connection section between the cover plate and the material storage trough, and a lifting ear is connected to the top of the cover plate.

[0008] Preferably, the liquid level sensing device is fixedly arranged on both sides of the top of the inverted cone funnel.

[0009] 1. The utility model provides a fully automatic fluidity measuring device for cement slurry. The inverted cone funnel adopts a liquid level sensing device, which does not require visual observation to control the feed amount, automatically senses the liquid level height, and reduces feeding errors.

[0010] 2. The test controller is connected to the test display signal. During the test, the test controller is used to perform switch control and timing. The unloading start time is directly connected to the test display with the signal of the infrared sensing device to reduce the error caused by human factors.

[0011] 3. Only the test controller is needed to control and record the test, which is simple and convenient to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0013] Figure 1 It is a structural schematic diagram of an embodiment of the present utility model.

[0014] Figure 2 This is a schematic diagram of the internal structure of the material storage tank in an embodiment of the present utility model.

[0015] In the figure: 1. Cover plate; 2. Agitator; 3. Feeding cover; 4. Storage trough; 5. Feeding pipe; 6. Inverted cone funnel; 7. Liquid level sensor; 8. Discharge pipe; 9. Infrared sensor; 10. Waste collection tank; 11. Test controller; 12. Test display. DETAILED DESCRIPTION

[0016] like Figure 1 and Figure 2 As shown, the utility model proposes a fully automatic fluidity measuring device for cement slurry, comprising a storage tank 4, an inverted cone funnel 6 arranged below a discharge pipe 5 at the bottom of the side wall of the storage tank 4, and a waste collection tank 10 arranged directly below a discharge pipe 8 at the bottom of the inverted cone funnel 6. A liquid level sensing device 7 is provided on the top of the inverted cone funnel 6, and further comprises a test controller 11 for controlling the electromagnetic valves connected to the discharge pipe 5 and the discharge pipe 8. An infrared sensing device 9 is provided at the bottom of the discharge pipe 8, and signals of the infrared sensing device 9, the test controller 11 and the liquid level sensing device 7 are connected to a test display 12.

[0017] During the test preparation stage, the sample to be tested is loaded into the storage tank 4, the power switch is turned on, and the storage tank 4 is stirred. During the test stage, the solenoid valve on the discharge pipe 5 is opened by the test controller 11, so that the sample in the storage tank 4 enters the inverted cone funnel 6 through the discharge pipe 5, and the sample is accumulated in the inverted cone funnel 6. After the liquid level sensing device 7 is triggered, the solenoid valve of the discharge pipe 5 is closed, and the solenoid valve of the discharge pipe 8 is opened, and the timing is started. The infrared receiver of the infrared sensing device 9 can receive the infrared rays emitted by the infrared transmitter, and the sample flows out of the discharge pipe 8, intercepting the infrared rays. The infrared sensing device 9 loses the signal and transmits the signal to the test display 12. The test display 12 starts timing. After the infrared receiver in the infrared sensing device 9 receives the infrared signal again, the timing on the test display 12 stops, and the sample fluidity measurement is completed; finally, the sample capacity in the waste collection tank 10 is recorded.

[0018] like Figure 1 As shown, to ensure the sample maintains a certain fluidity within the storage tank 4, a cover plate 1 is mounted on top of the storage tank 4. A stirrer 2 is located within the cover plate 1, and a feeding cap 3 is mounted on the cover plate 1. A stirring motor on the cover plate 1 drives a stirring shaft, which in turn stirs the sample within the storage tank 4 via a stirring rod, maintaining sample fluidity and reducing test errors.

[0019] like Figure 1 and Figure 2 As shown, this achieves directional flow of the sample within the storage tank 4. Both ends of the storage tank 4 are semicircular. The rotating shaft of the stirrer 2 is coaxial with the ends of the storage tank 4, and the stirrers 2 on the cover plate 1 rotate in the same direction. The two stirrers 2 stir the sample within the storage tank 4, ensuring a directional flow of the sample within the storage tank 4. Since the storage tank 4 is mounted high, this prevents shaking caused by sample flow, improving its stability.

[0020] As a preferred embodiment of the present invention, the connection between the cover plate 1 and the storage tank 4 is provided with a sealing ring, and the top of the cover plate 1 is connected to a lifting lug. After a sample test is completed, the storage tank 4 needs to be cleaned. The cover plate 1 needs to be lifted using a crane and the interior of the storage tank 4 needs to be flushed. The sealing ring ensures the tightness of the connection between the storage tank 4 and the cover plate 1, preventing the sample from overflowing from the interface during the stirring process.

[0021] like Figure 1 As shown, to improve the detection accuracy of the liquid level sensing device 7, the liquid level sensing devices 7 are fixedly installed on both sides of the top of the inverted cone funnel 6. When the two liquid level sensing devices 7 simultaneously detect that the sample liquid level has risen to the set position, it means that the surface sample injection amount has reached the set amount, avoiding errors caused by the high sample flow rate and the inclined liquid surface at the top of the sample.

[0022] In addition, the feed pipe 5 can also be set to a spiral tube structure, and the sample flowing out of the feed pipe 5 flows into the inverted cone funnel 6 in an oblique direction, and can flow in a spiral along the inner wall of the inverted cone funnel 6, thereby reducing the impact on the inverted cone funnel 6.

Claims

1. A fully automatic fluidity measuring device for cement slurry, characterized by: The invention comprises a material storage tank (4), an inverted cone funnel (6) arranged below a discharge pipe (5) at the bottom of the side wall of the material storage tank (4), and a waste collection tank (10) arranged directly below a discharge pipe (8) at the bottom of the inverted cone funnel (6). A liquid level sensing device (7) is provided at the top of the inverted cone funnel (6). The invention also comprises a test controller (11) for controlling and connecting an electromagnetic valve on the discharge pipe (5) and the discharge pipe (8). An infrared sensing device (9) is provided at the bottom of the discharge pipe (8). Signals of the infrared sensing device (9), the test controller (11) and the liquid level sensing device (7) are connected to a test display (12).

2. The fully automatic fluidity measuring device for cement slurry according to claim 1, characterized in that: A cover plate (1) is installed on the top of the material storage tank (4), an agitator (2) is arranged inside the cover plate (1), and a feeding cover (3) is arranged on the cover plate (1).

3. The fully automatic fluidity measuring device for cement slurry according to claim 2, characterized in that: Both ends of the material storage trough (4) are semicircular, the rotating shaft of the stirrer (2) and the end of the material storage trough (4) are in a coaxial state, and the stirrers (2) on the cover plate (1) rotate in the same direction.

4. The fully automatic fluidity measuring device for cement slurry according to claim 2, characterized in that: A sealing ring is provided at the connection section between the cover plate (1) and the material storage trough (4), and a lifting lug is connected to the top of the cover plate (1).

5. The fully automatic fluidity measuring device for cement slurry according to claim 1, characterized in that: The liquid level sensing device (7) is fixedly arranged on both sides of the top of the inverted cone funnel (6).

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