CN100451337C - Apparatus for detecting pumping performance of newly-mixed concrete - Google Patents

Abstract

The present invention relates to a detection device for freshly mixed concrete, particularly to a measure device for the pump delivery performance of the concrete. The present invention solves the problem that engineering quality and progress are influenced by pipeline blockage caused by high resistance and slow current speed of the freshly mixed concrete in the process of delivery, and is composed of an air pressure box, two tubular containers and connecting pipelines, wherein the air pressure box is arranged at the right side of the first tubular container; the air outlet of the air pressure box is communicated with the upper end of the first tubular container; the left side at the lower part of the first tubular container is communicated with the right side at the lower part of the second tubular container by the connecting pipelines; a column-shaped piston provided with a piston rod is arranged in the second tubular container; the piston rod is provided with measure scales, and the upper part of the piston rod is provided with pin holes in which pins are inserted. The device of the present invention can calculate the flow velocity in the device of the concrete to be measured, and detects the pumpability of the concrete by resistance and current speed so that the pipelines are difficult to block in the process of delivery and the concrete are smoothly poured so as to improve the construction efficiency.

Description

Testing device for pumping performance of fresh concrete

technical field

The invention relates to a measuring device for pumping performance of concrete.

Background technique

At present, the pumping performance of fresh concrete is crucial to engineering construction. The pumping performance of concrete is required for transportation and pouring, and there are two factors that affect the pumping performance of concrete: one is the flow of concrete in the pipeline resistance; the second is the flow rate of concrete in the pipeline. But at present, there is no special equipment for testing concrete pumping performance, so it is impossible to know the flow resistance and flow rate of concrete in the pipeline, so it is impossible to understand the pumping performance of concrete, which has a great impact on engineering construction. When the existing concrete has a large resistance and a slow flow rate during the transportation process, the pipeline will be blocked, which will affect the quality and progress of the project.

Contents of the invention

In order to solve the problem that the existing fresh concrete has a large resistance and a slow flow rate during the transportation process, the pipeline is blocked, which affects the quality and progress of the project, and a detection device for the pumping performance of fresh concrete is provided to solve the above problems. The specific technical scheme is as follows:

The invention consists of an air pressure box, two tubular containers and connecting pipelines. The air pressure box is composed of a check valve, a pressure gauge and an air pressure pipe. A pressure gauge and an air pressure pipe are provided respectively, and a valve is arranged on the air pressure pipe. The outer wall of the right end is connected by a pipe column, the air pressure box is arranged on the right side of the first tubular container, the gas outlet end of the air pressure box communicates with the upper end of the first tubular container, the lower left side of the first tubular container is connected with the lower right side of the second tubular container Connected by connecting pipelines, the upper end of the first tubular container is provided with a first container cover, the first container cover is provided with a sealing gasket, the inner side of the first container cover is provided with an internal thread to connect with the external thread on the upper end of the first tubular container, the second The left side of the bottom end of a tubular container communicates with one end of the connecting pipeline. A cylindrical piston is arranged in the second tubular container. A piston rod is arranged on the cylindrical piston. A measuring scale is arranged on the piston rod. There are pin holes, and the pins are inserted in the pin holes.

According to the device, the present invention can measure that the measured concrete is in a balanced state, and the weight in the second tubular container is equal to the air pressure force, the driving force of the air pressure Subtract the weight of the measured concrete and the cylindrical piston 11 to obtain the flow resistance of the measured concrete in the device; the device measures the rise of the measured concrete in the second tubular container 6-2 through the scale on the piston rod 12 The height and the time required to rise to the height can be used to calculate the flow velocity of the measured concrete in the device. The pumpability of concrete is tested by resistance and flow velocity. The pipeline is not easy to be blocked during the conveying process of concrete, the pouring is smooth, and the construction efficiency is improved.

Description of drawings

Fig. 1 is a schematic structural view of the present invention.

Detailed ways

Specific implementation manner 1: This implementation manner is described in conjunction with FIG. 1 . This embodiment is made up of air pressure box 1, the first tubular container 6-1, the second tubular container 6-2 and connecting pipeline 9, and air pressure box 1 is arranged on the right side of the first tubular container 6-1, and the air pressure box 1 The gas outlet is communicated with the upper end of the first tubular container 6-1, the lower left side of the first tubular container 6-1 is communicated with the lower right side of the second tubular container 6-2 by a connecting pipeline 9, and the second tubular container 6- 2. There is a cylindrical piston 11 inside, and a piston rod 12 is arranged on the cylindrical piston 11. A measuring scale 19 is arranged on the piston rod 12. A pin hole 15 is opened on the upper part of the piston rod 12, and a pin 16 is inserted into the pin hole 15. . Both the first tubular container 6-1 and the second tubular container 6-2 have a diameter of 12 cm and a height of 65 cm.

Specific Embodiment 2: This embodiment will be described in conjunction with FIG. 1 . The air pressure box 1 of this embodiment is composed of a check valve 2, a pressure gauge 3 and an air pressure pipe 4. The inflation check valve 2 is arranged on the inflation pipeline 20 communicated with the air pressure box 1. The pressure gauge 3 and the air pressure pipe 4 are provided with a valve 5 on the air pressure pipe 4, the lower end of the air pressure pipe 4 communicates with the air pressure box 1, the upper end of the air pressure pipe 4 communicates with the upper end of the first tubular container 6-1, and the air pressure box 1 The outer wall at the left end is connected with the outer wall at the right end of the first tubular container 6 - 1 by a pipe column 8 .

Specific Embodiment Three: This embodiment will be described in conjunction with FIG. 1 . The upper end of the first tubular container 6-1 of the present embodiment is provided with the first container cap 7-1, and the first container cap 7-1 is provided with the gasket 18, and the inside of the first container cap 7-1 is provided with internal thread and The upper end of the first tubular container 6 - 1 is connected with the external thread, and the left side of the bottom end of the first tubular container 6 - 1 communicates with one end of the connecting pipeline 9 .

Specific Embodiment 4: This embodiment is described in conjunction with FIG. 1 . The upper end of the second tubular container 6-2 of the present embodiment is provided with a second container cover 7-2, and the inner side of the second container cover 7-2 is provided with an internal thread connected with the external thread on the upper end of the second tubular container 6-2. There is a rod hole 13 at the center of circle of the container cover 7-2, and the top of the piston rod 12 passes through the rod hole 13.

Fifth specific embodiment: This embodiment will be described in conjunction with FIG. 1 . There is a gap of 1 mm between the cylindrical piston 11 of the present embodiment and the inner wall of the second tubular container 6-2.

Measurement process:

At first the first tubular container 6-1 is filled with air of a certain pressure, the cylindrical piston 11 in the second tubular container 6-2 is at the bottom of the second tubular container 6-2, and the first tubular container 6-1 is opened Fill the first container cover 7-1 with the concrete 17 to be tested in the first tubular container 6-1, then cover the first container cover 7-1, open the valve 5, and flow from the air pressure box 1 to the first tubular container 6 0.05 ~ 0.1Mpa pressure gas is applied in -1, under the action of gas pressure, the concrete 17 to be tested in the first tubular container 6-1 enters the second tubular container 6-2 through the outlet of the connecting pipeline 9, and as it enters As the measured concrete 17 in the second tubular container 6-2 increases, the cylindrical piston 11 also moves upwards along with the rising of the measured concrete 17, and when the gas pressure in the first tubular container 6-1 drops to a certain When the pressure value is reached, the measured concrete 17 in the second tubular container 6-2 stops moving upwards, and the height of the measured concrete 17 in the second tubular container 6-2 can be recorded from the scale 19 on the piston rod 12 (also can show the volume of measured concrete 17), under equilibrium state, the weight in the second tubular container 6-2 is to enter the sum of measured concrete, the self-weight of cylindrical piston body and the resistance of pipeline equal to the air pressure action force The propelling force of the air pressure subtracts the weight of the measured concrete and the cylindrical piston 11 to obtain the flow resistance of the measured concrete in the device; The rising height in 6-2 and the time required to rise to the height can be used to calculate the flow velocity of the measured concrete in the device. The pumpability of concrete is tested by resistance and flow velocity.

Claims (4)

1. A detection device for fresh concrete pumping performance, characterized in that it consists of an air pressure box (1), a first tubular container (6-1), a second tubular container (6-2) and a connecting pipeline (9), The air pressure box (1) is composed of a check valve (2), a pressure gauge (3) and an air pressure pipe (4). , the upper end of the air pressure box (1) is respectively provided with a pressure gauge (3) and an air pressure pipe (4), and the air pressure pipe (4) is provided with a valve (5), and the lower end of the air pressure pipe (4) is connected with the air pressure box (1) ), the upper end of the air pressure tube (4) communicates with the upper end of the first tubular container (6-1), and the outer wall of the left end of the air pressure box (1) is connected with the outer wall of the right end of the first tubular container (6-1) by the pipe column (8 ) connection, the air pressure box (1) is located on the right side of the first tubular container (6-1), and the gas outlet end of the air pressure box (1) communicates with the upper end of the first tubular container (6-1), and the first tubular container ( The lower left side of 6-1) communicates with the lower right side of the second tubular container (6-2) by a connecting pipeline (9), and the upper end of the first tubular container (6-1) is provided with a first container cover (7 -1), the first container cover (7-1) is provided with a gasket (18), the inside of the first container cover (7-1) is provided with an internal thread and an external thread on the upper end of the first tubular container (6-1) Connect, the bottom left side of the first tubular container (6-1) communicates with one end of the connecting pipeline (9), the second tubular container (6-2) is provided with a cylindrical piston (11), the cylindrical piston ( 11) is provided with a piston rod (12), the piston rod (12) is provided with a measurement scale (19), and a pin hole (15) is provided on the top of the piston rod (12), and the pin (16) is inserted in the pin hole ( 15) inside. 2. The detection device for fresh concrete pumping performance according to claim 1, characterized in that the upper end of the second tubular container (6-2) is provided with a second container cover (7-2), and the second container cover (7-2) -2) The inner side is provided with an internal thread to connect with the external thread on the upper end of the second tubular container (6-2), the center of the second container cover (7-2) has a rod hole (13), and the piston rod (12) The upper part passes through the rod hole (13). 3. The detection device for pumping performance of fresh concrete according to claim 1, characterized in that there is a gap of 1 mm between the cylindrical piston (11) and the inner wall of the second tubular container (6-2). 4. The detection device for pumping performance of fresh concrete according to claim 1, characterized in that the first tubular container (6-1) and the second tubular container (6-2) have a diameter of 12 cm and a height of 12 cm. 65cm.

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