Grouting head for grouting cement paste behind structural wall in pressure mode

Abstract

The utility model discloses a grouting head for grouting cement paste behind a structural wall, which comprises a ball valve, and one end of the ball valve is connected with a connecting pipe. In the utility model, the double-liquid slurry pipe is screwed and fixed on the connecting pipe, the movable pipe extends into a grouting hole which is drilled in advance, the threaded seat is rotated by the handle to downwards extrude the rubber ring, and the rubber ring is extruded and expanded due to the extrusion of screwing force, so that all gaps at the periphery of the grouting hole are sealed, and the grouting quality is ensured to be improved in the grouting process. And slurry cannot seep from gaps around the grouting holes and the adjustable pipe. After grouting is completed, the ball valve is closed, the double-liquid slurry pipe is taken down, the grouting head is left in the grouting hole for standing, after the injected cement slurry is solidified, the threaded seat is loosened, the rubber ring is elastically reset, the movable pipe is taken out, the purpose of recycling is achieved, meanwhile, the grouting hole is blocked through waterproof mortar with the strength one mark higher than the strength of original concrete, and therefore the waterproof effect is achieved. And the surfaces of the grouting holes are polished, so that the grouting holes are tightly combined with the peripheral concrete surface.

Description

TECHNICAL FIELD

[0001] The utility model relates to cement grouting technical field especially relates to a grouting head for structure wall rear pressure injection cement slurry. BACKGROUND

[0002] Grouting is the method that some solidifiable slurry is injected into the crack or pore of rock foundation to improve its physical and mechanical properties. The purpose of grouting is to prevent seepage, block leakage, reinforce and correct building deflection. Grouting mechanism has: filling grouting, permeation grouting, compaction grouting and splitting grouting. Grouting material has granular slurry material and chemical slurry material, and the granular slurry material is mainly cement slurry, and the chemical slurry material includes silicate (water glass) and high molecular slurry material. In the grouting process, the flexible tube is inserted into the grouting hole drilled in advance, and since there is a gap between the flexible tube and the grouting hole, the back slurry condition occurs. SUMMARY

[0003] The utility model discloses a grouting head for structure wall rear pressure injection cement slurry to solve the shortcomings in the prior art.

[0004] In order to achieve the above object, the utility model adopts the following technical scheme:

[0005] A grouting head for structure wall rear pressure injection cement slurry, including ball valve, one end of ball valve is connected with connecting pipe, the other end of connecting pipe is connected with flexible tube, the end away from ball valve of flexible tube is installed with baffle ring, a plurality of rubber rings are movably sleeved on the flexible tube, and the rubber ring is located between the baffle ring and the ball valve, the end of the rubber ring is provided with a spacer, and the upper end of the rubber ring is provided with a compression power structure.

[0006] Preferably, the compression power structure includes a threaded segment provided on the flexible tube, and a threaded seat is threadedly connected to the threaded segment.

[0007] Preferably, the threaded seat is symmetrically provided with a handle on the side wall, and the handle is provided with an anti-skid sleeve.

[0008] Preferably, a pressing sleeve is arranged between the threaded seat and the uppermost spacer, and the pressing sleeve is sleeved on the flexible tube.

[0009] Preferably, a steel ball holder is arranged between the threaded seat and the pressing sleeve, the steel ball holder is angularly distributed with ball holes, and a steel ball is arranged in the ball hole.

[0010] Compared with the prior art, the utility model discloses the beneficial effect is: the utility model discloses the double liquid slurry pipe is screwed fixed on the connecting pipe, and the flexible pipe is inserted into the grouting hole drilled in advance, and the rubber ring is extruded downward by the handle rotating the threaded seat, and the rubber ring is extruded and expands due to the extrusion of the screwing force, so that the peripheral gap of the grouting hole is completely sealed, and the slurry does not seep from the gap between the grouting hole and the flexible tube periphery during the grouting process.

[0011] After grouting is completed, the ball valve is closed, the double liquid slurry pipe is removed, the grouting head is left in the grouting hole and is placed, after the injected cement slurry solidifies, the threaded seat is loosened, the rubber ring is elastically reset, the flexible tube is removed, the purpose of reuse is achieved, the grouting hole is sealed by waterproof mortar with one mark higher than the original concrete strength, and the surface of the grouting hole is polished to be closely combined with the surrounding concrete surface. BRIEF DESCRIPTION OF DRAWINGS

[0012] In order to more specifically and intuitively illustrate the technical scheme in the embodiment of the utility model or the prior art, the drawings needed in the embodiment or the prior art description will be briefly introduced below.

[0013] Figure 1 Structure diagram of the utility model Figure 1 ;

[0014] Figure 2 Structure diagram of the utility model Figure 2 .

[0015] In the drawing: connecting pipe 1, ball valve 2, flexible tube 3, threaded section 4, threaded seat 5, handle 6, steel ball holder 7, pressing sleeve 8, spacer ring 9, rubber ring 10, check ring 11. DETAILED DESCRIPTION

[0016] The technical scheme in the embodiment of the utility model will be clearly and completely described below in combination with the drawings in the embodiment of the utility model, and obviously, the described embodiment is only a part of the embodiment of the utility model, not all the embodiments.

[0017] Referring to Figures 1-2 A grouting head for structure wall back pressure injection of cement slurry, including ball valve 2, one end of ball valve 2 is connected with connecting pipe 1, the other end of connecting pipe 1 is connected with flexible tube 3, the end away from ball valve 2 of flexible tube 3 is installed with check ring 11, a plurality of rubber rings 10 are movably sleeved on flexible tube 3, rubber ring 10 is located between check ring 11 and ball valve 2, the end of rubber ring 10 is provided with spacer ring 9, and the upper end of rubber ring 10 is provided with compression power structure.

[0018] The double-liquid slurry pipe is screwed and fixed on the connecting pipe 1, the adjustable pipe 3 is inserted into the pre-drilled grouting hole, the threaded seat 5 is rotated by the handle 6 to extrude the rubber ring 10 downwards, the rubber ring 10 is extruded and expanded due to the extrusion force, so that the gap around the grouting hole is completely sealed, and it is ensured that the slurry does not seep out from the gap between the grouting hole and the adjustable pipe 3 during the grouting process.

[0019] After the grouting is completed, the ball valve 2 is closed, the double-liquid slurry pipe is removed, the grouting head is left in the grouting hole for 12 hours, after the injected cement slurry is solidified, the threaded seat 5 is loosened, the rubber ring 10 is elastically reset, the adjustable pipe 3 is taken out, the purpose of repeated use is achieved, at the same time, the grouting hole is sealed by waterproof mortar with a strength one grade higher than the original concrete, and the surface of the grouting hole is polished to be tightly combined with the surrounding concrete surface.

[0020] In the embodiment, the compression power structure includes a threaded section 4 arranged on the adjustable pipe 3, and a threaded seat 5 threadedly connected to the threaded section 4, the rotation of the threaded seat 5 is converted into circumferential movement by the threaded section 4, so that the rubber ring 10 is extruded and deformed.

[0021] In the embodiment, the side wall of the threaded seat 5 is symmetrically provided with a handle 6, and the handle 6 is provided with an anti-skid sleeve.

[0022] In the embodiment, a pressing sleeve 8 is arranged between the threaded seat 5 and the uppermost partition ring 9, and the pressing sleeve 8 is sleeved on the adjustable pipe 3.

[0023] In the embodiment, a steel ball holder 7 is arranged between the threaded seat 5 and the pressing sleeve 8, the steel ball holder 7 is angularly provided with ball holes, and steel balls are arranged in the ball holes, the rotation friction between the threaded seat 5 and the pressing sleeve 8 is reduced by the steel balls.

[0024] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A grouting head for back-pressing cement slurry of structure wall, comprising a ball valve (2), one end of the ball valve (2) is connected with a connecting pipe (1), the other end of the connecting pipe (1) is connected with a flexible pipe (3), characterized in that, The end of the active tube (3) away from the ball valve (2) is provided with a check ring (11), a plurality of rubber rings (10) are movably sleeved on the active tube (3), the rubber rings (10) are located between the check ring (11) and the ball valve (2), the end of the rubber ring (10) is provided with a partition ring (9), and the upper end of the rubber ring (10) is provided with a compression power structure.

2. A slurry head for back-pressuring cement slurry into a structural wall according to claim 1, wherein, The compression power structure comprises a threaded section (4) arranged on the active tube (3), and a threaded seat (5) threadedly connected to the threaded section (4).

3. A slurry head for back-pressuring cement slurry into a structural wall according to claim 2, wherein, Symmetrical handles (6) are arranged on the side wall of the threaded seat (5), and the handle (6) is provided with an anti-skid sleeve.

4. A slurry head for back-pressuring cement slurry into a structural wall according to claim 3, wherein, A pressing sleeve (8) is arranged between the threaded seat (5) and the uppermost partition ring (9), and the pressing sleeve (8) is sleeved on the active tube (3).

5. A slurry head for back-pressuring cement slurry into a structural wall according to claim 4, wherein, A steel ball retainer (7) is arranged between the threaded seat (5) and the pressing sleeve (8), the steel ball retainer (7) is angularly distributed with ball holes, and a steel ball is arranged in the ball hole.

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