CN217093253U

CN217093253U - Anti-hardening foam generating device for shield machine

Info

Publication number: CN217093253U
Application number: CN202220153096.5U
Authority: CN
Inventors: 朱亚军; 陈正国; 严廷标; 卜林
Original assignee: Jiangsu Zhongya Heavy Industry Co ltd
Current assignee: Jiangsu Zhongya Heavy Industry Co ltd
Priority date: 2022-01-20
Filing date: 2022-01-20
Publication date: 2022-08-02
Anticipated expiration: 2032-01-20

Abstract

The utility model discloses a shield constructs machine and prevents foam generating device that hardens, including the foam generating pipe, be provided with the reducing sprue in the open end body of foam generating pipe, the reducing sprue forms reducing gradual change pipeline section one, transition pipeline section and reducing gradual change pipeline section two from inside to outside towards the foam generating pipe open end in proper order, it has the air inlet ring that corresponds with the transition pipeline section to fit with a contraceptive ring at the body of foam generating pipe, is provided with a plurality of inlet ports on the air inlet ring, slopes to be provided with a plurality of gas pockets on the transition pipeline section; the upper and lower parts of the closed end of the foam generating pipe are correspondingly provided with a foaming agent inlet pipe and a water inlet pipe, the closed end of the foam generating pipe is provided with a motor, an execution shaft of the motor is provided with a rotating shaft, a plurality of stirring blades are arranged on the rotating shaft between the first reducing gradual change pipe section and the closed end of the foam generating pipe, and a plurality of stirring rods are arranged on the rotating shaft in the second reducing gradual change pipe section. The utility model discloses can prevent that the foam from taking place the outlet end and hardening.

Description

Anti-hardening foam generating device for shield machine

Technical Field

The utility model relates to a shield constructs machine and prevents hardened foam generating device belongs to the foam generating device field.

Background

The shield machine utilizes the foam to be injected into the digging face and the soil bin during the tunneling operation, ensures the smooth discharge of the muck, keeps the stability of the digging face and is suitable for the condition that the shield supported by soil pressure has very high soil viscosity during the tunneling process. The foam is an adjusting medium generated by mixing a mixed liquid of a foaming agent and water with air, the soil after foam adjustment has good fluidity, plasticity and waterproof permeability, the range of the soil pressure balance shield machine suitable for opening soil is enlarged after the shield machine uses the foam, the torque of a cutter head is reduced, and the abrasion of a cutter is reduced. However, because the working surface of the outlet end of the foam generator is close to the tunneling surface, soil can easily enter the foam generator, particularly, after the foam generator stops working, the outlet end has no foam impact, and the soil can easily enter the nozzle and is combined with the nozzle to block the nozzle.

Disclosure of Invention

For solving prior art's is not enough, the utility model provides a shield constructs machine and prevents hardened foam generating device can prevent that foam generating tube exit end from hardening, reduces the foam generator because of blockking up the possibility of breaking down.

The utility model discloses the technical scheme who adopts does:

a hardening-preventing foam generating device for a shield machine comprises a foam generating pipe, wherein one end of the foam generating pipe is in a closed state, the other end of the foam generating pipe is in an open state, a reducing block is arranged in a pipe body at the open end of the foam generating pipe, the reducing block is sequentially provided with a reducing gradual change pipe section I, a transition pipe section and a reducing gradual change pipe section II from inside to outside towards the open end of the foam generating pipe, the small-caliber ends of the reducing gradual change pipe section I and the reducing gradual change pipe section II are respectively communicated with the transition pipe section, an air inlet ring corresponding to the transition pipe section is arranged on the pipe body of the foam generating pipe in an encircling manner, a plurality of air inlets are arranged on the air inlet ring, and a plurality of air holes for communicating the air inlet ring with the reducing gradual change pipe section II are obliquely arranged on the transition pipe section; the foam generator comprises a foam generating pipe, a foam agent inlet pipe and a water inlet pipe, wherein the foam agent inlet pipe and the water inlet pipe are correspondingly arranged above and below the closed end of the foam generating pipe, a motor is arranged at the closed end of the foam generating pipe, a rotating shaft which extends into the foam generating pipe, penetrates through a transition pipe section and extends into the open end of the foam generating pipe is arranged on an execution shaft of the motor, a plurality of stirring blades are arranged on the rotating shaft between the first reducing gradual change pipe section and the closed end of the foam generating pipe, and a plurality of stirring rods are arranged on the rotating shaft in the second reducing gradual change pipe section.

Preferably, valves are arranged on the foaming agent inlet pipe and the water inlet pipe.

Preferably, the rotating shaft in the first reducing gradual-change pipe section is sleeved with a flow increasing block, the flow increasing block is of a circular truncated cone structure, a small-caliber end of the flow increasing block faces the transition pipe section, and a flow passage is formed between the flow increasing block and the first reducing gradual-change pipe section.

Further preferably, flow meters are provided on both the foaming agent inlet pipe and the water inlet pipe at the rear end of the valve.

Preferably, the end of the air hole extending into the second reducing gradual change pipe section is arranged close to the small-caliber end of the second reducing gradual change pipe section.

The beneficial effects of the utility model reside in that:

through being provided with drive pivot pivoted motor at foam generator tub blind end, make the motor can drive the pivot and rotate then and drive stirring vane and stirring rod action, then can play the effect of mixing water and foamant simultaneously and can also prevent that earth from getting into in the foam generator pipe, then can effectually prevent that foam generator tub exit end from hardening, reduce the probability of foam generator because of blockking up the trouble.

Drawings

Fig. 1 is a schematic structural view of the present invention;

the main reference numerals in the figures have the following meanings:

1. the device comprises a foam generating pipe, 2, a reducing block, 3, a first reducing gradual change pipe section, 4, a transition pipe section, 5, a second reducing gradual change pipe section, 6, an air inlet ring, 7, an air hole, 8, a foaming agent inlet pipe, 9, a water inlet pipe, 10, a motor, 11, a rotating shaft, 12, stirring blades, 13, a stirring rod, 14, a valve, 15, a flow increasing block, 16 and a flowmeter.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings and examples.

As shown in fig. 1: the embodiment is a hardening-preventing foam generating device for a shield machine, which comprises a foam generating pipe 1, wherein one end of the foam generating pipe 1 is in a closed state, the other end of the foam generating pipe 1 is in an open state, a reducing block 2 is arranged in the open end of the foam generating pipe 1, a reducing gradual-change pipe section I3, a transition pipe section 4 and a reducing gradual-change pipe section II 5 are sequentially formed on the reducing block 2 from inside to outside towards the open end of the foam generating pipe 1, small-caliber ends of the reducing gradual-change pipe section I3 and the reducing gradual-change pipe section II 5 are respectively communicated with the transition pipe section 4, an air inlet ring 6 corresponding to the transition pipe section 4 is arranged on the pipe body of the foam generating pipe 1 in a surrounding manner, a plurality of air inlets are arranged on the air inlet ring 6, and a plurality of air holes 7 used for communicating the air inlet ring 6 with the reducing gradual-change pipe section II 5 are obliquely arranged on the transition pipe section 4; the foam agent inlet pipe 8 and the water inlet pipe 9 are correspondingly arranged above and below the closed end of the foam generating pipe 1, the motor 10 is arranged at the closed end of the foam generating pipe 1, the executing shaft of the motor 10 is provided with a rotating shaft 11 which extends into the foam generating pipe 1, penetrates through the transition pipe section 4 and extends into the open end of the foam generating pipe 1, the rotating shaft 11 between the first reducing gradual-change pipe section 3 and the closed end of the foam generating pipe 1 is provided with a plurality of stirring blades 12, and the rotating shaft 11 in the second reducing gradual-change pipe section 5 is provided with a plurality of stirring rods 13.

Valves 14 are arranged on the foaming agent inlet pipe 8 and the water inlet pipe 9.

The rotating shaft 11 in the first reducing gradual-change pipe section 3 is sleeved with the flow increasing block 15, the flow increasing block 15 is of a circular truncated cone structure, the small-caliber end of the flow increasing block 15 faces the transition pipe section 4, and a flow passage is formed between the flow increasing block 15 and the first reducing gradual-change pipe section 3.

Flow meters 16 are provided on the foaming agent inlet pipe 8 and the inlet pipe 9 at the rear end of the valve 14.

The end part of the air hole 7 extending into the second reducing gradual change pipe section 5 is arranged close to the small-caliber end of the second reducing gradual change pipe section 5.

In practical application, foaming agent and water are respectively sent into the foam generating pipe 1 through the foaming agent inlet pipe 8 and the water inlet pipe 9, under the condition that the motor 10 drives the rotating shaft 11 to rotate, the water and the foaming agent are mixed by the stirring blades, then the mixed water and the foaming agent pass through the flow passage between the flow increasing block 15 and the first reducing gradual change pipe section 3, then the mixed water enters the transition pipe end 4 and then enters the second reducing gradual change pipe section 5, fluid passes through the first reducing gradual change pipe section 3 and the transition pipe section 4 and then enters the second reducing gradual change pipe section 5 to generate a Venturi effect, air can be sucked through the air hole 7, and then the fluid is further mixed under the action of the stirring rod 13 to generate foam and is sprayed out through the opening end of the foam generating pipe 1; puddler 13 can prevent that earth from getting into the foam and taking place to harden in taking place when rotating, stops to pour into the back at the foam, postpones to close motor 10, makes motor 10 drive pivot 11 and rotates the dead time, and the messenger probably gets into the earth of foam in taking place 1 open end and breaks up and rely on self gravity to discharge along the pipeline inner wall of reducing gradual change pipeline section two 5 through puddler 13 can.

The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a shield constructs machine foam generating device who prevents hardening which characterized in that: comprises a foam generating pipe (1), one end of the foam generating pipe (1) is in a closed state, the other end of the foam generating pipe (1) is in an open state, a reducing block (2) is arranged in the open end pipe body of the foam generating pipe (1), the reducing plug block (2) is provided with a reducing gradual-change pipe section I (3), a transition pipe section (4) and a reducing gradual-change pipe section II (5) from inside to outside in sequence towards the opening end of the foam generating pipe (1), the small-caliber ends of the first reducing gradual change pipe section (3) and the second reducing gradual change pipe section (5) are respectively communicated with the transition pipe section (4), an air inlet ring (6) corresponding to the transition pipe section (4) is arranged on the upper ring of the foam generating pipe (1), a plurality of air inlets are arranged on the air inlet ring (6), a plurality of air holes (7) for communicating the air inlet ring (6) with the second reducing gradual-change pipe section (5) are obliquely arranged on the transition pipe section (4); the foam generator is characterized in that a foaming agent inlet pipe (8) and a water inlet pipe (9) are correspondingly arranged above and below the closed end of the foam generating pipe (1), a motor (10) is arranged at the closed end of the foam generating pipe (1), an execution shaft of the motor (10) is provided with a rotating shaft (11) which extends into the foam generating pipe (1), penetrates through the transition pipe section (4) and extends into the open end of the foam generating pipe (1), a plurality of stirring blades (12) are arranged on the rotating shaft (11) between the first reducing gradual-change pipe section (3) and the closed end of the foam generating pipe (1), and a plurality of stirring rods (13) are arranged on the rotating shaft (11) in the second reducing gradual-change pipe section (5).

2. The hardening prevention foam generating device for the shield tunneling machine according to claim 1, wherein the foaming agent inlet pipe (8) and the water inlet pipe (9) are provided with valves (14).

3. The hardening prevention foam generating device for the shield tunneling machine according to claim 1, wherein a flow increasing block (15) is sleeved on the rotating shaft (11) located in the first reducing gradual changing pipe section (3), the flow increasing block (15) is of a circular truncated cone structure, a small-caliber end of the flow increasing block (15) faces the transition pipe section (4), and a flow passage is formed between the flow increasing block (15) and the first reducing gradual changing pipe section (3).

4. The anti-hardening foam generating device for the shield tunneling machine according to claim 2, wherein flow meters (16) are provided on the foaming agent inlet pipe (8) and the water inlet pipe (9) which are located at the rear end of the valve (14).

5. The hardening prevention foam generating device for the shield tunneling machine according to claim 1, wherein the end of the air hole (7) extending into the second reducing gradual change pipe section (5) is arranged close to the small-caliber end of the second reducing gradual change pipe section (5).