CN211646989U - A go out thick liquid hole connecting device for preventing mud jacking backward flow - Google Patents

Abstract

The utility model relates to a slip casting seals thick liquid construction technical field, specifically is a play thick liquid hole connecting device for preventing mud jacking backward flow, including going out the thick liquid pipe, go out the thick liquid pipe and include anchor section and vertical section, anchor section and vertical section are connected through turning to the section and are formed the right angle form, and anchor section one end is connected in the play thick liquid mouth at connecting piece top, and the vertical section mid-mounting has switching device. The utility model discloses an open switching device earlier and carry out the slip casting operation to connecting piece inside, treat that the grout material spills over from the top of vertical section, close switching device and disconnection mud jacking equipment and the be connected of slip casting mouth, because switching device's closing, formed a negative pressure environment from switching device to the connecting piece, the grout material has the trend of connecting piece bottom slip casting mouth backward flow under the dead weight effect, and the inside negative pressure of connecting piece can hinder the grout material backward flow.

Description

A go out thick liquid hole connecting device for preventing mud jacking backward flow

Technical Field

The utility model relates to a slip casting seals thick liquid construction technical field, specifically is a play thick liquid hole connecting device for preventing mud jacking backward flow.

Background

Between civil engineering fabricated construction prefabricated component, generally need fill in pre-buried connecting device through the grout, wait that the grout solidifies the inside inclosed whole of formation to realize the effective connection between the adjacent component.

At present, the grout outlet pipeline which is most widely applied in engineering adopts a straight-through type connection form, grouting materials are injected into the connecting pieces between the components from a grouting hole through professional grouting equipment, and typical connecting pieces are steel sleeves and the like. And after the grouting material is gradually filled in the connecting piece, the grouting material overflows from the other end of the connecting piece. Generally, in order to make the inside grout material more closely knit, the port of going out the thick liquid all can set up a grout pipe, stretches out the component a distance and exceeds the inside highest point of connecting piece to form the pressure of backward flow through the dead weight of grout material.

Wait that the grout material spills over the back from grout outlet pipe, constructor pauses the mud jacking operation of mud jacking equipment to the grout mouth of withdrawing from fast with the slip casting mouth of mud jacking equipment and mud jacking mouth butt joint, need plug up with equipment such as wooden plug the mud jacking mouth in time this moment, otherwise, because the good mobility of liquid grout material and the action of gravity of grout material self, the grout material that has got into the sleeve inside will flow through the mud jacking mouth rapidly, forms mud jacking backward flow problem.

Even if the construction worker is trained, grouting material backflow caused by short clearance in the process of blocking a grouting opening after grouting is finished is difficult to avoid. This phenomenon both causes the waste of site operation slurry, leads to the job site to handle the increase engineering time to the backward flow slurry again, more probably leads to the inside not full quality problem of grout material of connecting piece, influences structure safety.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the above-mentioned technical problem among the prior art, provide a grout outlet connection device for preventing mud jacking backward flow, the device can prevent that the grout from taking place the backward flow after the slip casting construction is accomplished, guarantees the connecting piece and to prefabricated component's firm connection.

In order to achieve the aim, the grout outlet connecting device for preventing the backflow of the grouting is characterized by comprising a grout outlet pipe,

the grout outlet pipe comprises an anchoring section and a vertical section, the anchoring section is connected with the vertical section through a steering section to form a right angle, one end of the anchoring section is connected with a grout outlet at the top of the connecting piece, and a switch device is arranged in the middle of the vertical section.

Preferably, the switch device comprises a switch handle, a valve ball, a sealing ring and a ball seal.

Preferably, the valve ball is provided with a passage.

Preferably, the switch handle is connected to the valve ball.

Preferably, the sealing ring is arranged in a gap between the switch handle and the inner wall of the switch device.

Preferably, the ball is sealed in a gap between the ball valve and the inner wall of the switch device.

Preferably, the connecting piece is internally provided with a steel bar.

Preferably, the reinforcing bars pass through the splicing interface between the prefabricated parts.

Preferably, the bottom of the connecting piece is provided with a grouting opening.

Preferably, the grouting port is connected to a grouting nozzle of grouting equipment.

Compared with the prior art, the utility model, its advantage lies in:

1. the utility model discloses an open switching device earlier and carry out the slip casting operation to the connecting piece inside, wait that the grout material overflows from the top of vertical section, close switching device and break off the connection of mud jacking equipment and slip casting mouth, because closing of switching device, formed a negative pressure environment from switching device to connecting piece, the grout material has the tendency of connecting piece bottom slip casting mouth backward flow under the dead weight effect, and the negative pressure inside the connecting piece can hinder the grout material backward flow;

2. the utility model discloses simple structure, convenient operation, the cost is lower.

Drawings

FIG. 1 is a schematic structural view of a slurry outlet pipe of the device of the present invention;

fig. 2 is a schematic view of the overall installation of the device of the present invention.

As shown, in the figure:

1. the grouting device comprises an anchoring section, a steering section, a vertical section, a switch device, a switch handle, a valve ball, a sealing ring, a ball seal, a prefabricated part, a grouting opening, a steel bar, a splicing interface, a connecting piece, a grouting device, a grouting opening, a grouting pipe and a grouting pipe, wherein the anchoring section comprises 2, the steering section, 3, the vertical section, 4, the switch device, 5, a switch handle, 6, the valve ball, 7, the sealing ring, 8, the ball seal, 9, the prefabricated part, 10, the grouting.

Detailed Description

The structure and principle of such a device will be apparent to those skilled in the art from the following further description of the invention with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

As shown in figures 1 and 2, the grout outlet connecting device for preventing grouting from flowing back comprises a grout outlet pipe and a switching device, wherein the grout outlet pipe comprises an anchoring section, a vertical section and a turning section, two ends of the turning section are respectively connected to the anchoring section and the vertical section, and the anchoring section and the vertical section are connected through the turning section to form a right angle. The two ends of the steering section can be fixedly connected in a socket-joint mode, a threaded mode or an adhesive mode. One end of the anchoring section is connected with a grout outlet at the top of the connecting piece in a thread mode and can also be connected in an adhesive mode. The device can be made of common rigid polyvinyl chloride (PVC) materials, and the pipeline is low in cost and economical.

The switching device is installed in the middle of vertical section, and switching device includes that switch handle, valve ball, sealing washer and ball are sealed, and the valve ball is located the inside of vertical section and its switch handle who connects in the vertical section outside, is equipped with the passageway on the valve ball. The rotation of the switch handle can drive the rotation of the valve ball, and further the direction of the valve ball channel is changed. When the switch handle is in an opening state, the axis of the passage of the valve ball is parallel to the axis of the vertical section to form a smooth inner passage so that grouting material can flow; when the switch handle is in a closed state, the axis of the passage of the valve ball is perpendicular to the axis of the vertical section, the sealing surface of the valve ball blocks the inner passage of the vertical section to prevent grouting material from flowing, and a closed environment, namely a negative pressure environment, is formed from the switch device to the connecting piece at the moment. The inside grout of connecting piece has the trend of backward flow down under the dead weight, and forms the negative pressure environment from switching device to the connecting piece, can hinder the backward flow of grout.

The sealing ring is arranged in a gap between the switch handle and the inner wall of the switch device, and the ball is arranged in a gap between the ball valve and the inner wall of the switch device in a sealing manner. Both aims are to seal the inside of the switch device and prevent gas and liquid from contacting with the external environment through gaps among the switch device parts.

The connectors are typically provided with reinforcing bars disposed therein, and the reinforcing bars typically pass through the splice interface between the prefabricated components. The bottom of the connecting piece is provided with a grouting opening which is connected with a grouting nozzle of grouting equipment.

The utility model discloses still have following operating method:

when the switching device of the device is in an open state, the grouting equipment injects grouting material into the inner cavity of the connecting piece through the grouting port. As the grouting process progresses, the grouting material gradually fills the inner cavity of the connecting member, eventually passing through the vertical section and overflowing the top of the vertical section. At the moment, the grouting equipment is paused, and the grouting equipment is not withdrawn, so that the grouting port is kept in a blocked state. Meanwhile, a switch handle of the switch device is rapidly rotated to enable the switch device to be in a closed state, then the grouting equipment is removed, and a plugging device such as a wooden plug is rapidly used for plugging a grouting opening. After the grouting opening is blocked, the switch handle of the switch device is rotated again, so that the switch device is changed into an open state, the grouting material is communicated with the outside atmosphere at the vertical section, and the grouting material can flow freely under the action of self weight.

To sum up, the device can prevent that grouting material from taking place the backward flow after the slip casting construction is accomplished, guarantees the connecting piece and to prefabricated component's firm connection.

Claims (10)

1. The utility model provides a go out thick liquid hole connecting device for preventing mud jacking backward flow, a serial communication port, including going out the thick liquid pipe, it includes anchor section and vertical section to go out the thick liquid pipe, the anchor section with the vertical section forms the right angle form through turning to the section connection, anchor section one end is connected in the play thick liquid mouth at connecting piece top, vertical section mid-mounting has switching device.

2. The grout hole connection device for preventing backflow of grouting, according to claim 1, wherein the switching device comprises a switch handle, a valve ball, a sealing ring and a ball seal.

3. The grout hole connection device for preventing backflow of grouting of claim 2, wherein the valve ball is provided with a passage.

4. The grout outlet connection device for preventing backflow of grouting of claim 2, wherein the switch handle is connected to the valve ball.

5. The grout hole connection device for preventing backflow of grouting according to claim 2, wherein the sealing ring is arranged in a gap between the switch handle and the inner wall of the switch device.

6. The grout hole connection device for preventing backflow of grouting according to claim 2, wherein the ball is sealed in a gap between the valve ball and the inner wall of the opening and closing device.

7. The grout hole connection apparatus for preventing backflow of grouting of claim 1, wherein reinforcing bars are provided inside the connecting member.

8. The grout hole connection apparatus for preventing backflow of grouting of claim 7, wherein the reinforcing bars pass through the splicing interface between the prefabricated parts.

9. The grout hole connection device for preventing backflow of grouting of claim 1, wherein the bottom of the connecting piece is provided with a grouting port.

10. The grout hole connection device for preventing backflow of grouting of claim 9, wherein the grouting port is connected to a grouting nozzle of grouting equipment.

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