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Variable pressure grouting pump and grouting method

A technology of grouting pump and pressure transformation device, which is applied in the processing of building materials, structural elements, building components, etc., can solve the problems affecting the grouting pump discharge pressure and flow, the suction and discharge valve group is not tightly closed, and the slurry in the sleeve Saturation, poor uniformity and compactness, etc., to achieve the effect of increasing pressure, improving quality, and ensuring saturation

Pending Publication Date: 2019-04-23
广州建筑产业研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] A grouting pump is usually used in the grouting process of the sleeve grouting connection technology. The existing grouting pump grouting valve group mainly adopts a one-way valve structure. When the viscosity coefficient of the grouting material is high, the suction and discharging valve group will not close properly Strict, which seriously affects the grouting pressure and flow rate of the grouting pump, resulting in poor saturation, uniformity and compactness of the grout in the sleeve

Method used

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Examples

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Effect test

Embodiment 1

[0032] like figure 1 As shown, the present invention provides a variable pressure grouting pump, comprising: an inlet part, a grouting part connected to the outlet of the inlet part, an output part connected to the outlet of the grouted part; the output The part includes a control valve and a delivery pipe, the control valve includes a first valve inlet, a second valve inlet, and a valve outlet, one end of the delivery pipe is connected to the valve outlet; the slurry outlet includes a variable pressure slurry outlet and a normal pressure slurry outlet, the variable pressure slurry outlet is connected to the first valve inlet through a pressure changing device, and the normal pressure slurry outlet is connected to the second valve inlet.

[0033] Compared with the prior art, the present invention sets two grout outlets in the grouting part, one of which is a normal pressure grout outlet and the other is a variable pressure grout outlet, and a variable pressure grout is set bet...

Embodiment 2

[0042] like Figure 4 As shown, another aspect of the present invention also improves a method of grouting using the above-mentioned grouting pump, which includes a vertical sleeve 74 and a vertical air pipe 77, and there is a space below the bottom end surface of the sleeve 74. Cavity 71, the sleeve 74 communicates with the vent pipe 77 through the cavity 71; the lower end of the sleeve 74 is provided with a lower port 72, and the upper end of the sleeve is provided with an upper port 73, and the lower port 72 is connected with described joint 62; The method for described grouting comprises the steps:

[0043] S1: Open the inlet of the second valve, close the inlet of the first valve, inject the slurry into the sleeve from the delivery pipe until the slurry flows out from the upper port, and then block the upper port. mouth;

[0044] S2: Close the inlet of the second valve, open the inlet of the first valve, and continue to inject the slurry into the sleeve from the delivery ...

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Abstract

The invention relates to the field of rebar sleeve grouting and specifically discloses a variable pressure grouting pump and a grouting method. The grouting pump comprises a feeding part, a grouting part and an output part; the grouting part is connected with a discharging port of the feeding part; the output part is connected with a slurry outlet of the grouting part; the output part comprises acontrol valve and a conveying pipe; the control valve comprises a first valve inlet, a second valve inlet and a valve outlet; one end of the conveying pipe is connected with the valve outlet; the slurry outlet comprises a variable pressure slurry outlet and a normal pressure slurry outlet; the variable pressure slurry outlet is connected with the first valve inlet through a variable pressure device; the normal pressure slurry outlet is connected with the second valve inlet. According to the invention, the variable pressure slurry outlet is added and the variable pressure device is arranged between the variable pressure slurry outlet and the control valve, so that the technical problem of influences on slurry discharging pressure and flow of the grouting pump caused by untight closing of aslurry discharging valve block in the prior art can be solved, and the saturability, evenness and airtightness of slurry in the sleeve can be promoted.

Description

technical field [0001] The invention relates to the field of steel sleeve grouting, in particular to a variable pressure grouting pump and a grouting method. Background technique [0002] In the prior art, the steel sleeve grouting connection technology is one of the key technologies of the prefabricated concrete structure. The full grouting connection of the column is that the end of the sleeve with the end cover sealing ring is inserted into the steel bar in the prefabrication factory, and is usually pre-buried with the steel bar. The lower end of the prefabricated column or prefabricated shear wall component, and the other end is grouted on site; it is generally used for the connection of the main reinforcement of prefabricated shear wall and frame column. [0003] A grouting pump is usually used in the grouting process of the sleeve grouting connection technology. The existing grouting pump grouting valve group mainly adopts a one-way valve structure. When the viscosity ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04C5/16E04G21/00
CPCE04C5/16E04C5/162E04G21/00
Inventor 戚玉亮李荣方子妍黄荣超郑建财谢合舜王光谱
Owner 广州建筑产业研究院有限公司
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