CN215212403U

CN215212403U - Concrete pump pipe

Info

Publication number: CN215212403U
Application number: CN202121460459.1U
Authority: CN
Inventors: 吴松华; 葛志钦; 蒋汉华; 房迪彪; 回恒酉; 夏明春
Original assignee: Cccc Water Conservancy And Hydropower Construction Co ltd
Current assignee: Cccc Water Conservancy And Hydropower Construction Co ltd
Priority date: 2021-06-29
Filing date: 2021-06-29
Publication date: 2021-12-17
Anticipated expiration: 2031-06-29

Abstract

The utility model discloses a concrete pump pipe is connected with the pump truck, including inlet pipe and discharging pipe, the input port and the pump truck output of inlet pipe are linked together, the delivery outlet and the discharging pipe of inlet pipe are linked together, its characterized in that: the feeding pipe is internally provided with a buffer piece which allows the concrete to pass through but decelerates the concrete. The utility model discloses well bolster is installed in the inlet tube, and most mechanical energy can be eliminated through this bolster to the concrete blanking, prevents in the concrete sand stone aggregate separation, "the phenomenon of educing" appears; meanwhile, the flow velocity of the concrete is reduced to prevent sand and stone aggregate from rebounding, and the quality of the concrete is improved.

Description

Concrete pump pipe

Technical Field

The utility model relates to a concrete pump pipe.

Background

During the concrete pouring process of the hydraulic engineering deep foundation pit or the vertical shaft, a pump is generally used for entering a warehouse, a concrete pump pipeline is long, a large height difference exists between an input port and an output port of the concrete pump pipeline, and the gravitational potential energy and the kinetic potential energy in the concrete flowing process are large under the action of gravity, so that two problems are easy to occur during the pouring process: firstly, when concrete falls, sand and stone materials with high density fall firstly, so that the sand and stone materials (aggregate) are separated from a cement matrix, and the aggregate segregation phenomenon occurs; secondly, the flow velocity of the concrete is high, the impact force is increased, especially, sand and stone materials are easy to rebound when impacting the pipe wall in the pump pipe, the pipe wall of the pump pipe is abraded greatly, pipe explosion is easy to occur, and in addition, the workability of the concrete is also poor. The two technical problems have great influence on the quality of concrete.

Therefore, further improvements are needed for existing concrete pump pipes.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a concrete pump pipe for reducing the speed of sand and stone materials in order to improve the concrete quality is provided in the concrete conveying process.

The utility model provides a technical scheme that above-mentioned technical problem adopted does: the utility model provides a concrete pump pipe is connected with the pump truck, includes inlet pipe and discharging pipe, the input port of inlet pipe is linked together with the pump truck output, the delivery outlet and the discharging pipe of inlet pipe are linked together its characterized in that: the feeding pipe is internally provided with a buffer piece which allows the concrete to pass through but decelerates the concrete.

Preferably, the buffer member is a plurality of steel bars arranged in the feeding pipe at intervals in the radial direction. The reinforcing bar slows down after stopping the concrete that falls at a high speed, especially sand stone material, reduces mechanical energy, then passes through between the clearance between the reinforcing bar, has played the cushioning effect, has reduced the segregation phenomenon that prevents the pump sending concrete.

In order to reduce the rebound of the sand and stone materials after impacting the pipe wall, preferably, the inner wall of the feeding pipe is provided with an elastic gasket.

Preferably, the inlet pipe comprises the concatenation of multistage body, the gasket sets up on the body inner wall of seting up the delivery outlet. The length of the feeding pipe is about 3 to 10 meters, the feeding pipe is connected in a segmented mode, the closer to the output port of the feeding pipe, the larger the sand and stone aggregate rebounds, therefore, the elastic gasket is arranged on the inner wall of the pipe body provided with the output port, and the cost is saved while the rebounding is reduced.

Preferably, the elastic pad is rubber.

In order to control the flow rate of concrete in the discharge pipe, the output port is preferably arranged on the side wall of the feed pipe, and the included angle between the discharge pipe and the feed pipe is 20-45 degrees.

To reduce the flow rate of concrete entering the tapping pipe without changing the flow rate, the internal diameter of the tapping pipe is preferably larger than the internal diameter of the feeding pipe.

In order to control the flow rate of concrete in the discharge pipe, preferably, a control valve for controlling the size of the output port is arranged between the discharge pipe and the feed pipe.

Preferably, the input port of the feeding pipe is connected with the output end of the pump truck through a flange plate.

Compared with the prior art, the utility model has the advantages of: the utility model discloses well bolster is installed in the inlet tube, and most mechanical energy can be eliminated through this bolster to the concrete blanking, prevents in the concrete sand stone aggregate separation, "the phenomenon of educing" appears; meanwhile, the flow velocity of the concrete is reduced, so that sand and stone aggregate rebounding is prevented, the abrasion to the pipe wall of the pump pipe is reduced, in addition, the workability of the concrete is also ensured, and the quality of the concrete is improved.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention;

fig. 2 is a cross-sectional view of an embodiment of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments.

Referring to fig. 1 to 2, a concrete pump pipe is connected to a pump truck, and includes an inlet pipe 1, an outlet pipe 2, a buffer member 3, an elastic gasket 4, and a control valve 5.

The feeding pipe 1 comprises an input port 11 and an output port 12, the output port 12 is arranged on the side wall of the feeding pipe 1, and the input port 11 is connected with the output end of the pump truck through a flange 6 to realize communication.

The discharging pipe 2 is communicated with the output port 12, and the included angle between the discharging pipe 2 and the feeding pipe 1 is 30 degrees. The internal diameter of the discharge pipe 2 is greater than the internal diameter of the feed pipe 1. The inlet pipe 1 adopts a phi 125 pump pipe, the outlet pipe 2 adopts a phi 219 pump pipe, and concrete directly enters the surface of the poured concrete bin from the outlet of the outlet pipe 2.

A buffer 3 is provided in the feed pipe 1, the buffer 3 allowing the concrete to pass through but slowing down the concrete. Referring to fig. 2, the buffer 3 is 3 phi 12 steel bars laterally spaced in the feed tube 1.

The elastic gasket 4 is arranged on the inner wall of the feeding pipe 1, and as shown in fig. 1, the elastic gasket 4 is arranged on the inner wall of the pipe body provided with the output port 12. The elastic pad 4 in this embodiment is rubber.

The control valve 5 is arranged between the discharging pipe 2 and the feeding pipe 1 to control the size of the output port 12.

Through set up 3 phi 12 reinforcing bars in inlet pipe 1, as the primary buffer, lay the rubber gasket as the secondary buffer at phi 125 inlet pipe 1 inner wall, set up the setting of control valve 5 of controlling 12 sizes of delivery outlet between discharging pipe 2 and inlet pipe 1, adjust the concrete flow rate, phi 219 discharging pipe 2 is bigger than inlet pipe 1 pump line internal diameter, under the unchangeable prerequisite of flow, further reduce the flow rate, reach and prevent that concrete aggregate separation from taking place "segregation phenomenon" and reduce the concrete flow rate through above technical means, prevent the aggregate bounce-back, guarantee the effect of concrete quality. The pump pipe is simply modified on site, so that the pump pipe is practical and convenient to use and high in practicability.

Claims

1. The utility model provides a concrete pump pipe is connected with the pump truck, includes inlet pipe (1) and discharging pipe (2), input port (11) and the pump truck output of inlet pipe (1) are linked together, delivery outlet (12) and discharging pipe (2) of inlet pipe (1) are linked together its characterized in that: a buffer piece (3) which allows concrete to pass through but decelerates the concrete is arranged in the feeding pipe (1).

2. The concrete pump pipe of claim 1, wherein: bolster (3) are radial interval and set up many reinforcing bars in inlet pipe (1).

3. The concrete pump pipe of claim 1, wherein: and an elastic gasket (4) is arranged on the inner wall of the feeding pipe (1).

4. The concrete pump pipe of claim 3, wherein: the inlet pipe (1) comprises the concatenation of multistage body, resilient pad (4) set up on the body inner wall of seting up delivery outlet (12).

5. The concrete pump pipe as claimed in any one of claims 3 or 4, wherein: the elastic gasket (4) is made of rubber.

6. The concrete pump pipe as claimed in any one of claims 1 to 4, wherein: the delivery outlet (12) is arranged on the side wall of the feeding pipe (1), and the included angle between the discharging pipe (2) and the feeding pipe (1) is 20-45 degrees.

7. The concrete pump pipe as claimed in any one of claims 1 to 4, wherein: the inner diameter of the discharge pipe (2) is larger than that of the feed pipe (1).

8. The concrete pump pipe as claimed in any one of claims 1 to 4, wherein: and a control valve (5) for controlling the size of the output port (12) is arranged between the discharge pipe (2) and the feed pipe (1).

9. The concrete pump pipe as claimed in any one of claims 1 to 4, wherein: and an input port (11) of the feeding pipe (1) is connected with an output end of the pump truck through a flange plate (6).