CN210066788U

CN210066788U - Reverse circulation water jetting mud suction machine

Info

Publication number: CN210066788U
Application number: CN201920509016.3U
Authority: CN
Inventors: 黄以撒; 王宏毅; 赵永振; 张洋洋
Original assignee: China Railway Construction Bridge Engineering Bureau Group Co Ltd
Current assignee: China Railway Construction Bridge Engineering Bureau Group Co Ltd
Priority date: 2019-04-16
Filing date: 2019-04-16
Publication date: 2020-02-14
Anticipated expiration: 2029-04-16

Abstract

The utility model provides a reverse circulation water-jet suction dredge, which comprises a dredge head and a mud discharge pipe penetrating through the dredge head; the inner cavity of the mud suction head is divided into a high-pressure water bin and a high-pressure air bin by a partition plate; an air supply pipe communicated with the high-pressure air bin and a water supply pipe connected with the high-pressure water bin are arranged at the upper part of the mud suction head; the lower part of the mud suction head is provided with a plurality of water jetting pipes communicated with the high-pressure water bin. The utility model discloses create easy operation, easy maintenance, the rivers that high pressure was jeted can break away comparatively hard overburden, and the mud pipe is difficult to block up for inhale mud efficiency. The method is suitable for mud suction and sinking operation under various geological conditions.

Description

Reverse circulation water jetting mud suction machine

Technical Field

The invention belongs to the field of bridge construction, and particularly relates to a reverse circulation water jetting suction dredge.

Background

The double-wall steel cofferdam is more generally applied in the construction of the deep water foundation of the bridge, the conventional double-wall steel cofferdam is mostly sunk in a covering layer in a mud suction and sinking mode, and the air mud suction facility has the advantages of simple construction process, less investment, high mud taking speed and the like. Conventional air suction mud power equipment comprises air compressor machine and gas holder, and all the other are suction mud, and suction pipe high-pressure air pipe constitutes, and is not good to the little suction mud effect of soil layer disturbance, blocks up the pipeline easily simultaneously and reduces efficiency and increase cost of maintenance, needs improvement urgently.

Disclosure of Invention

The invention aims to overcome the defects in the prior art and provides a reverse circulation water-jet suction dredge.

In order to solve the technical problems, the technical scheme created by the invention is realized as follows:

a reverse circulation water-jet mud suction machine comprises a mud suction head and a mud discharge pipe penetrating through the mud suction head; the inner cavity of the mud suction head is divided into a high-pressure water bin and a high-pressure air bin by a partition plate; an air supply pipe communicated with the high-pressure air bin and a water supply pipe connected with the high-pressure water bin are arranged at the upper part of the mud suction head; a plurality of water jetting pipes communicated with the high-pressure water sump are arranged at the lower part of the mud suction head; the part of the pulp discharge pipe corresponding to the high-pressure air bin is provided with a plurality of air passing holes; the water supply pipe is connected with water source equipment, and the air supply pipe is connected with air source equipment.

Further, the water source device includes a water pump in communication with a water supply pipe.

Further, the air source equipment comprises an air compressor communicated with the air supply pipe.

Furthermore, the water holes on the pulp discharge pipe are uniformly distributed along the outer circumference direction of the pulp discharge pipe.

Furthermore, 3 water jetting pipes are uniformly distributed on the mud suction head.

Furthermore, the water injection nozzle of the water injection pipe is lower than the mud suction port of the mud discharge pipe.

Furthermore, the water injection nozzle is two meters lower than the sludge suction nozzle.

Further, the baffle is horizontally arranged, and divides the inner cavity of the mud suction head into a high-pressure water bin at the upper side and a high-pressure air bin at the lower side.

The invention has the advantages and positive effects that:

the invention has simple operation and convenient maintenance, the water flow jetted by high pressure can disperse a harder covering layer, the air supply pipe supplies high pressure air flow, negative pressure is formed in the mud suction head to discharge mud and water, mud is sucked by reverse circulation, water jetting and soil breaking can be carried out simultaneously with mud suction, the mud discharge pipe is not easy to be blocked, and the mud suction efficiency is accelerated. The method is suitable for mud suction and sinking operation under various geological conditions.

Drawings

Fig. 1 is a schematic structural diagram of the invention.

In the figure:

1-a suction head; 2-a slurry discharge pipe; 3-a separator; 4-high pressure water sump;

5-high pressure wind cabin; 6-a gas supply pipe; 7-a water supply pipe; 8-a water jet pipe;

9-air passing holes; 10-a water pump; 11-an air compressor; 12-a water jetting nozzle; 13-suction opening.

Detailed Description

It should be noted that the embodiments and features of the embodiments of the present invention may be combined with each other without conflict.

The following detailed description of the embodiments of the invention is provided.

A reverse circulation water-jet mud suction machine is shown in figure 1 and comprises a mud suction head 1 and a mud discharge pipe 2 penetrating through the mud suction head; the inner cavity of the mud suction head is divided into a high-pressure water bin 4 and a high-pressure air bin 5 by a partition plate 3; an air supply pipe 6 communicated with the high-pressure air bin and a water supply pipe 7 connected with the high-pressure water bin are arranged at the upper part of the mud suction head; a plurality of water jetting pipes 8 communicated with the high-pressure water sump are arranged at the lower part of the mud suction head; the part of the pulp discharge pipe corresponding to the high-pressure wind cabin is provided with a plurality of wind passing holes 9; the water supply pipe is connected with water source equipment, and the air supply pipe is connected with air source equipment.

The above water supply apparatus includes a water pump 10 communicated with a water supply pipe. The air supply equipment comprises an air compressor 11 communicated with an air supply pipe.

Sufficient wind pressure (generally 0.4-0.6MP) is conveyed by an air compressor to enter a high-pressure wind cabin of the mud suction device and is sprayed into the mud discharge pipe through the wind passing hole, negative pressure is generated in the mud suction head to generate suction force, high-speed airflow is formed, and the blockage of the easily blocked section of the mud discharge pipe is effectively avoided. Water is injected into the high-pressure water bin by the water pump and is ejected by the water ejecting nozzle of the water ejecting pipe, and broken mud blocks, gravels and water are sucked into the slurry discharging pipe together, so that mud and air are taken away, and the mud is circularly sucked along with the discharge of high-pressure airflow outside the slurry discharging pipe, thereby achieving the purpose of sinking the cofferdam.

The water holes on the slurry discharge pipe are uniformly distributed along the outer circumference direction of the slurry discharge pipe. The water jetting pipes are evenly distributed with 3 pipes on the mud suction head. Usually, the water injection nozzle 12 of the water injection pipe is lower than the mud suction port 13 of the mud discharge pipe. Generally, the water injection nozzle is two meters lower than the mud suction nozzle, the mutual influence of slurry discharge and water injection is minimum, and the water injection and mud suction effects are best.

The baffle plates are horizontally arranged to divide the inner cavity of the mud suction head into a high-pressure water bin at the upper side and a high-pressure air bin at the lower side. Adopt the reverse circulation mud suction principle, it is fast to inhale mud, and the water jetting mouth can be gone up silt and grit abundant crushing to the riverbed to faster broken ground inhales mud, and mixes the silt of dashing up and block up when preventing the suction. The method is particularly suitable for cofferdam sinking and mud sucking construction of silty clay, silty fine sand and silty soil layers. The air supply pipe is connected by a flange coated with waterproof paint and is coated with the waterproof paint.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be embodied in other specific forms without departing from the spirit or essential characteristics thereof.

The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a reverse circulation jetting suction dredge which characterized in that: comprises a mud suction head and a mud discharge pipe penetrating through the mud suction head; the inner cavity of the mud suction head is divided into a high-pressure water bin and a high-pressure air bin by a partition plate; an air supply pipe communicated with the high-pressure air bin and a water supply pipe connected with the high-pressure water bin are arranged at the upper part of the mud suction head; a plurality of water jetting pipes communicated with the high-pressure water sump are arranged at the lower part of the mud suction head; the part of the pulp discharge pipe corresponding to the high-pressure air bin is provided with a plurality of air passing holes; the water supply pipe is connected with water source equipment, and the air supply pipe is connected with air source equipment.

2. The reverse circulation water-jet dredge of claim 1 characterized in that: the water source device includes a water pump in communication with a water supply line.

3. The reverse circulation water-jet dredge of claim 1 characterized in that: the air source equipment comprises an air compressor communicated with an air supply pipe.

4. The reverse circulation water-jet dredge of claim 1 characterized in that: the water holes on the pulp discharge pipe are uniformly distributed along the outer circumference direction of the pulp discharge pipe.

5. The reverse circulation water-jet dredge of claim 1 characterized in that: 3 water jetting pipes are uniformly distributed on the mud suction head.

6. The reverse circulation water-jet dredge of claim 1 characterized in that: and the water injection nozzle of the water injection pipe is lower than the mud suction port of the mud discharge pipe.

7. The reverse circulation water-jet dredge of claim 6, characterized in that: the water injection nozzle is two meters lower than the sludge suction nozzle.

8. The reverse circulation water-jet dredge of claim 1 characterized in that: the baffle is horizontally arranged, and divides the inner cavity of the mud suction head into a high-pressure water bin at the upper side and a high-pressure air bin at the lower side.