CN218281301U

CN218281301U - Shield constructs foamer foaming rifle

Info

Publication number: CN218281301U
Application number: CN202222379015.6U
Authority: CN
Inventors: 王明杰; 王德乾; 谢宇飞; 严振林; 李博; 斯芳芳; 吴兴光; 沈锐; 王粟丰
Original assignee: Beijing China Railway New Material Technology Co ltd
Current assignee: Beijing China Railway New Material Technology Co ltd
Priority date: 2022-09-07
Filing date: 2022-09-07
Publication date: 2023-01-13
Anticipated expiration: 2032-09-07

Abstract

The utility model belongs to the field of tunnel and underground engineering construction materials, in particular to a foaming gun of a shield foaming agent, which comprises a foaming gun main body; the foaming gun is characterized in that an inlet pipe is arranged at a position close to the top end of the foaming gun body, an outlet pipe is arranged at a position close to the bottom end of the foaming gun body, an adjusting mechanism is arranged inside the foaming gun body, the adjusting mechanism comprises a foaming cavity, the foaming cavity is formed inside the foaming gun body, a plurality of groups of distribution nets are arranged inside the foaming cavity in a linear mode, the distribution nets are two groups of the distribution nets, fillers are filled between the distribution nets, an inlet filter pad is connected to the top end of the foaming gun body through threads, a filter screen is fixedly connected to the position close to the bottom end inside the inlet filter pad, stepped holes are formed in the top end of the inlet filter pad, the top end of the inlet filter pad is connected with an inlet seal through threads, and the function of improving the foaming performance of the foaming agent foaming gun is achieved through the adjusting mechanism.

Description

Shield constructs foamer foaming rifle

Technical Field

The utility model relates to a tunnel and underground works construction material field specifically are a shield constructs foamer foaming rifle.

Background

The shield tunneling machine is a tunnel tunneling machine using a shield method, taking shield construction with the diameter of 6m as an example, about 6.75 ten thousand tons of muck are generated in each kilometer of shield tunneling, the content of the foaming agent is 0.1 percent, 67.5 tons of foaming agent stock solution are consumed in each kilometer of shield tunneling, and therefore a foaming agent foaming device is required.

Most of the existing foaming agent foaming guns are used for simultaneously adding foaming agent solution and air through two feed inlets of the foaming gun, generating foam through shunting of a foaming cavity in the foaming gun, and injecting the foam into an excavation chamber of a shield machine for improving an excavated soil layer;

most of the existing foaming agent foaming guns are not uniform and stable enough in foam, the foaming efficiency is low, the waste of foaming raw materials can be caused, and the use cost of a shield machine is increased.

SUMMERY OF THE UTILITY MODEL

In order to compensate prior art's not enough, the foam that current foamer foaming rifle sent is enough even stable, and foaming efficiency is lower, can cause the waste of foaming raw materials, increases the problem of shield structure machine's use cost, the utility model provides a shield constructs foamer foaming rifle.

The utility model provides a technical scheme that its technical problem adopted is: shield constructs foamer foaming rifle, include: a foam gun body; an inlet pipe is arranged at a position, close to the top end, of the foaming gun main body, an outlet pipe is arranged at a position, close to the bottom end, of the foaming gun main body, and an adjusting mechanism is arranged inside the foaming gun main body;

adjustment mechanism includes the foaming chamber, the inside foaming chamber of having seted up of foaming rifle main part, the inside multiunit branch stream net that is provided with of foaming chamber, branch stream net is linear arrangement in foaming intracavity portion, and is two sets of it has the filler all to fill between the branch stream net, there is the import filter pad on foaming rifle main part top through threaded connection, the inside fixed position that is close to the bottom of import filter pad is connected with the filter screen, the shoulder hole has been seted up on import filter pad top, there is the import through threaded connection and seals in import filter pad top, the import seals inside fixedly connected with flange head, flange head passes through threaded connection with the import pipe, there is the export filter pad in foaming rifle main part bottom through threaded connection, the inside bottom fixedly connected with filter screen of export filter pad, the shoulder hole has been seted up to export filter pad inside, there is the export through threaded connection in export filter pad top, the export seals inside fixedly connected with flange head, the import seals and passes through threaded connection with the foaming rifle main part.

Preferably, two sets of the inside all fixedly connected with sealing washer of shoulder hole, the bell jar has all been seted up to the sealing washer inside.

Preferably, a limiting ring is arranged at the connecting position of the inlet pipe and the flange head, the limiting ring is fixedly connected to the surface of the inlet pipe cylinder, a limiting ring is arranged at the connecting position of the outlet pipe and the flange head, and the limiting ring is fixedly connected to the surface of the outlet pipe cylinder.

Preferably, the top end of the inlet pipe is connected with a drainage pipe through threads, a limiting ring is arranged at the connecting position of the drainage pipe and the inlet pipe, the limiting ring is fixedly connected to the surface of the inlet pipe column, threaded ribs for guiding flow are arranged in the drainage pipe, the threaded ribs are arranged in the drainage pipe in a circumferential array, and the top end of the drainage pipe is connected with a joint pipe through threads.

Preferably, the cross-section of the thread rib is triangular.

Preferably, a sealing gasket is arranged between the top end of the inlet pipe and the drainage pipe, and the sealing gasket is fixedly connected with the drainage pipe.

The utility model discloses an useful part lies in:

1. the utility model discloses a structural design of adjustment mechanism has realized improving the function of foamer foaming rifle foamability, has solved the foam that most of current foamer foaming guns sent is not enough even stable, and foaming efficiency is lower, can cause the waste of foaming raw materials, increases the problem of the use cost of shield structure machine, has improved the foamer performance of foamer foaming gun;

2. the utility model discloses a structural design of booster mechanism has realized the function of foaming agent foaming rifle foaming efficiency, has solved that the most foaming time of current foaming agent foaming rifle is slow, influences the problem that shield constructs the machine engineering progress, has improved the foaming efficiency of foaming agent foaming rifle.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without inventive exercise.

Fig. 1 is a schematic overall perspective structure of the first embodiment;

FIG. 2 is a schematic front sectional view of a first embodiment;

FIG. 3 is an enlarged structural view of the first embodiment at A in FIG. 2;

FIG. 4 is an enlarged structural diagram of a portion B in FIG. 2 according to the first embodiment;

fig. 5 is a schematic overall perspective structure of the second embodiment.

In the figure: 1. a foam gun body; 2. an inlet pipe; 3. an outlet pipe; 4. a foaming chamber; 5. a shunt network; 6. a filler; 7. an inlet filter pad; 8. a filter screen; 9. a stepped hole; 10. sealing an inlet; 11. a flange head; 12. an outlet filter pad; 13. sealing the outlet; 14. a seal ring; 15. a tapered groove; 16. a limiting ring; 17. a drainage tube; 18. a limiting ring; 19. a threaded rib; 20. a joint pipe; 21. a gasket; 22. sealing the sheet; 23. a hexagonal nut.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Example one

Referring to fig. 1-4, a shield foaming agent foaming gun includes a foaming gun body 1; an inlet pipe 2 is arranged at a position, close to the top end, of the foaming gun main body 1, an outlet pipe 3 is arranged at a position, close to the bottom end, of the foaming gun main body 1, and an adjusting mechanism is arranged inside the foaming gun main body 1;

the adjusting mechanism comprises a foaming cavity 4, the foaming cavity 4 is formed in the foaming gun main body 1, a multi-component flow net 5 is arranged in the foaming cavity 4, the flow dividing nets 5 are linearly arranged in the foaming cavity 4, fillers 6 are filled between the two groups of flow dividing nets 5, the top end of the foaming gun main body 1 is connected with an inlet filter pad 7 through threads, a filter screen 8 is fixedly connected to the position, close to the bottom end, in the inlet filter pad 7, a stepped hole 9 is formed in the top end of the inlet filter pad 7, the top end of the inlet filter pad 7 is connected with an inlet seal 10 through threads, a flange head 11 is fixedly connected to the inside of the inlet seal 10, the flange head 11 is connected with the inlet pipe 2 through threads, an outlet filter pad 12 is connected to the bottom end of the foaming gun main body 1 through threads, the filter screen 8 is fixedly connected to the inside bottom end of the outlet filter pad 12, the stepped hole 9 is formed in the inside of the outlet filter pad 12, an outlet seal 13 is connected to the top end of the outlet filter pad 12 through threads, a flange head 11 is fixedly connected to the inside the outlet seal 13, and the inlet seal 10 is connected with the gun main body 1 through threads;

when the foaming gun needs to foam uniformly and stably, an adjusting mechanism is needed, firstly, before working, the inlet pipe 2 is connected with gas-liquid fluid, a liquid pipeline is opened, and the liquid sealing performance of the inlet seal 10 and the outlet seal 13 of the foaming gun after a foaming agent passes through the foaming gun is checked; opening a gas pipeline, checking the gas sealing performance of an inlet seal 10 and an outlet seal 13 of the foaming gun after gas passes through the foaming gun, during operation, gas and liquid enter an inlet pipe 2 together, impurities possibly existing in a foam agent of a shield are filtered through a filter screen 8 inside the inlet filter 7, meanwhile, the foam agent from the inlet pipe 2 is subjected to primary uniform distribution, a foaming cavity 4 is a cavity for uniformly distributing the foam agent, a distribution net 5 adopts a nylon net with the aperture of 0.76-10mm, a filler 6 adopts LLDPE beads or glass beads with the diameter of 0.5-10mm, wherein the nylon net 5 layer with the aperture of 0.76-10mm and the LLDPE beads or glass beads with the diameter of 0.5-10mm are filled for 3 times in the filling sequence, and foam is finally obtained through multiple uniform distribution in the foaming cavity 4.

Sealing rings 14 are fixedly connected inside the two groups of stepped holes 9, and conical grooves 15 are formed inside the sealing rings 14;

during operation, through setting up sealing washer 14, make and to lead to stably between import pipe 02 bottom and the import filter pad 7, sealing washer 14 is inside to be seted up the bell jar and has played the water conservancy diversion effect simultaneously.

A limiting ring 16 is arranged at the connecting position of the inlet pipe 2 and the flange head 11, the limiting ring 16 is fixedly connected to the surface of the cylinder of the inlet pipe 2, a limiting ring 16 is arranged at the connecting position of the outlet pipe 3 and the flange head 11, and the limiting ring 16 is fixedly connected to the surface of the cylinder of the outlet pipe 3;

during operation, the limiting rings 16 fixedly connected with the inlet pipe 2 and the outlet pipe 3 have the same function, and are used for limiting the outlet pipe and the inlet pipe to be fixedly connected with the flange head 11 better, so that the system can be more stable during operation.

The top end of the inlet pipe 2 is connected with a drainage pipe 17 through threads, a limiting ring 18 is arranged at the connecting position of the drainage pipe 17 and the inlet pipe 2, the limiting ring 18 is fixedly connected to the surface of the cylinder of the inlet pipe 2, thread ribs 19 playing a role in guiding flow are arranged inside the drainage pipe 17, the thread ribs 19 are arranged inside the drainage pipe 17 in a circumferential array, and the top end of the drainage pipe 17 is connected with a connector pipe 20 through threads;

when the foaming gun works, most of the existing foaming agent foaming guns are slow in foaming time, the progress of the engineering of a shield machine is influenced, when the foaming speed of the foaming gun needs to be improved, a supercharging mechanism is used, firstly, a gas pipeline and a liquid pipeline are opened simultaneously, a joint pipe 20 connected with a Y-shaped three-way pipe is communicated, gas and liquid reach the inside of a drainage pipe 17 through the joint pipe 20, the inside of the drainage pipe 17 is actually a taper surface, an inlet pipe 2 used for guiding the water flow in the pipe is arranged in the drainage pipe 17, the liquid in the drainage pipe 17 is guided by the inlet pipe 2, the water flow in the drainage pipe 17 flows along the wall to keep spiral falling, meanwhile, a smooth air flow column is formed in the center of the inside of the drainage pipe 17, the flow speed of liquid is increased, meanwhile, the inner diameter of the drainage pipe 17 is reduced relative to the inner diameter of the joint pipe, the pressure of the liquid is increased, and the flow speed of the liquid is increased.

The section of the thread rib 19 is triangular;

during operation, the thread ribs 19 in the triangular shape can play a good role in guiding flow.

A sealing gasket 21 is arranged between the top end of the inlet pipe 2 and the drainage pipe 17, and the sealing gasket 21 is fixedly connected with the drainage pipe 17;

during operation, the sealing gasket 21 is arranged between the inlet pipe 2 and the drainage pipe 17, so that the air tightness of the device can be enhanced, and the connection of the whole device is more stable.

Example two

Referring to fig. 5, as another embodiment of the present invention, in a first comparative example, a sealing piece 22 is disposed at a position of the joint pipe 20 close to the bottom end, the sealing piece 22 is sleeved on the bottom end of the joint pipe 20, and a hexagonal nut 23 is connected to an outer side of a top end of the drainage tube 17 through a thread;

during operation, through setting up the leakproofness that guarantees connector 20 and drainage tube 17 swing joint that gasket 22 can be better, hexagon nut 23 can be with the Y type tee bend of being connected with connector 20 stable fixed.

The working principle is as follows: most of the existing foaming agent foaming guns have the disadvantages that the foam is not uniform and stable enough, the foaming efficiency is low, the waste of foaming raw materials can be caused, and the use cost of a shield machine is increased; opening a gas pipeline, checking the gas sealing performance of an inlet seal 10 and an outlet seal 13 of the foaming gun after gas passes through the foaming gun, during operation, gas and liquid enter an inlet pipe 2 together, impurities possibly existing in a foam agent of a shield are filtered through a filter screen 8 inside the inlet filter 7, meanwhile, the foam agent from the inlet pipe 2 is subjected to primary uniform distribution, a foaming cavity 4 is a cavity for uniformly distributing the foam agent, a distribution net 5 adopts a nylon net with the aperture of 0.76-10mm, a filler 6 adopts LLDPE beads or glass beads with the diameter of 0.5-10mm, wherein the nylon net 5 layer with the aperture of 0.76-10mm and the LLDPE beads or glass beads with the diameter of 0.5-10mm are filled for 3 times in the filling sequence, and foam is finally obtained through multiple uniform distribution in the foaming cavity 4.

Most of the existing foaming agent foaming guns have slow foaming time, which affects the progress of the engineering of a shield machine, when the foaming speed of the foaming gun needs to be improved, a booster mechanism is needed, firstly, a gas pipeline and a liquid pipeline are opened simultaneously, a joint pipe 20 connected with a Y-shaped three-way pipe is communicated, gas and liquid reach the inside of a drainage pipe 17 through the joint pipe 20, the inside of the drainage pipe 17 is actually a tapered surface, an inlet pipe 2 used for guiding the water flow in the pipe is arranged in the drainage pipe 17, the inlet pipe 2 guides the liquid in the drainage pipe 17, the water flow in the drainage pipe 17 falls in a spiral shape in a wall flow manner, meanwhile, an unblocked air flow column is formed in the center of the inside of the drainage pipe 17, the flow speed of the blocked liquid is increased, meanwhile, the inner diameter of the drainage pipe 17 is reduced relative to the inner diameter of the connection pipe, the pressure of the liquid is increased, and the flow speed of the liquid is increased.

In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention.

Claims

1. The utility model provides a shield constructs foamer foaming rifle which characterized in that: comprises a foaming gun main body (1); an inlet pipe (2) is arranged at a position, close to the top end, of the foaming gun main body (1), an outlet pipe (3) is arranged at a position, close to the bottom end, of the foaming gun main body (1), and an adjusting mechanism is arranged inside the foaming gun main body (1);

the adjusting mechanism comprises a foaming cavity (4), the foaming cavity (4) is arranged in the foaming gun main body (1), a multi-component flow net (5) is arranged in the foaming cavity (4), the flow dividing nets (5) are linearly arranged in the foaming cavity (4), a filler (6) is filled between the two groups of flow dividing nets (5), the top end of the foaming gun main body (1) is connected with an inlet filter pad (7) through threads, a filter screen (8) is fixedly connected at the position close to the bottom end in the inlet filter pad (7), the top end of the inlet filter pad (7) is provided with a stepped hole (9), the top end of the inlet filter pad (7) is connected with an inlet seal (10) through threads, a flange head (11) is fixedly connected inside the inlet seal (10), the flange head (11) is connected with the inlet pipe (2) through screw threads, the bottom end of the foaming gun main body (1) is connected with an outlet filter pad (12) through threads, the bottom end inside the outlet filter pad (12) is fixedly connected with a filter screen (8), a stepped hole (9) is arranged inside the outlet filter pad (12), the top end of the outlet filter pad (12) is connected with an outlet seal (13) through threads, the inside of the outlet seal (13) is fixedly connected with a flange head (11), the inlet seal (10) is connected with the foaming gun main body (1) through threads.

2. The shield foaming agent foaming gun according to claim 1, characterized in that: two sets of shoulder hole (9) inside all fixedly connected with sealing washer (14), conical groove (15) have all been seted up to sealing washer (14) inside.

3. The shield foaming agent foaming gun according to claim 2, characterized in that: the inlet pipe (2) and flange head (11) junction position department is provided with spacing ring (16), spacing ring (16) fixed connection is on inlet pipe (2) cylinder surface, outlet pipe (3) and flange head (11) junction position department is provided with spacing ring (16), spacing ring (16) fixed connection is on outlet pipe (3) cylinder surface.

4. The shield foaming agent foaming gun according to claim 3, characterized in that: the utility model discloses a drainage tube, including import pipe (2), drainage tube (17), spacing collar (18) are provided with in drainage tube (17) and the hookup location department of importing pipe (2), spacing collar (18) fixed connection is on the cylinder surface of import pipe (2), drainage tube (17) inside is provided with screw thread rib (19) that play the water conservancy diversion effect, screw thread rib (19) are the circumference array in drainage tube (17) inside, there is adapter tube (20) on drainage tube (17) top through threaded connection.

5. The shield foaming agent foaming gun according to claim 4, characterized in that: the section of the thread rib (19) is triangular.

6. The shield foaming agent foaming gun according to claim 5, characterized in that: a sealing gasket (21) is arranged between the top end of the inlet pipe (2) and the drainage pipe (17), and the sealing gasket (21) is fixedly connected with the drainage pipe (17).