Novel liquid extraction device for shield construction

Abstract

The utility model discloses a novel liquid extraction device for shield construction, which comprises an extraction box, a double-slurry storage cavity is formed in the extraction box, an air pressure pipe and a water outlet pipe are arranged on the extraction box, and the air pressure pipe and the water outlet pipe are positioned at the top of the extraction box and are respectively communicated with the double-slurry storage cavity. A mounting sleeve and a threaded column are arranged at the top of the extraction box, and the mounting sleeve is in threaded fit with the threaded column and used for locking the height of the water outlet pipe on the extraction box; air pressure on the shield tunneling machine is injected into the double-slurry storage cavity through the air pressure pipe, liquid stored in the extraction box is squeezed out under the action of high-pressure air, transformation is easy and convenient, the manufacturing cost is low, the principle of basic physics is adopted, it is avoided that a water pump is driven to work through long-distance power connection, meanwhile, the extraction box can be loaded on shield tunneling machine equipment, and the working efficiency is improved. And long-distance extraction of double-liquid slurry is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of shield construction, and in particular relates to a new liquid extraction device for shield construction. Background Art

[0002] The shield method is a fully mechanized construction method in the dark excavation method. It pushes the shield machine into the ground, supports the surrounding rock with the shield shell and segments to prevent collapse into the tunnel, and uses a cutting device to excavate the soil in front of the excavation face. The soil is transported out of the cave by the excavation machinery, and is pressurized and pushed forward at the rear by jacks. The precast concrete segments are assembled to form a mechanized construction method of the tunnel structure.

[0003] In the process of shield construction, in order to improve the slag and secondary replenishment of double liquid slurry, plastic barrels are needed to transport liquid materials during the construction process, and the liquid materials need to be pumped to the corresponding position of the shield machine trolley. The current extraction of liquid materials is mostly driven by electric pumps. Due to the large distance between the electric pile and the construction site, long-distance power connection is required, the construction cost is high, and the workers are at risk of electric shock. In addition, in the wiring of the construction site, most of them are stranded on the road surface and are easily damaged by construction vehicles, resulting in a high failure rate and affecting construction efficiency. Utility Model Content

[0004] In order to solve the above problems existing in the prior art, the utility model aims to provide a new type of liquid extraction device for shield construction.

[0005] The technical solution adopted by the utility model is as follows: it includes an extraction box, in which a double slurry storage cavity is formed, an air pressure pipe and a water outlet pipe are provided on the extraction box, the air pressure pipe and the water outlet pipe are located at the top of the extraction box, and are respectively communicated with the double slurry storage cavities, and a mounting sleeve and a threaded column are provided on the top of the extraction box, the mounting sleeve and the threaded column are threadedly matched, and are used to lock the height of the water outlet pipe on the extraction box.

[0006] As a preferred embodiment of the utility model, a mounting plate is provided on the top of the extraction box, the air pressure pipe and the water outlet pipe are connected to the double slurry storage chamber through the mounting plate, the threaded column is hollow, the water outlet pipe can shuttle through the interior of the threaded column, the inner wall of the threaded column forms an internal thread, and the bottom of the threaded column is fixedly connected to the top of the extraction box.

[0007] As a preferred embodiment of the present invention, the circumferential surface of the installation sleeve is provided with an external thread matched with the internal thread of the threaded column, and the installation sleeve and the threaded column are threadably matched through the internal thread and the external thread.

[0008] As a preferred embodiment of the utility model, a limit strip is provided in the threaded column, the bottom of the limit strip is flexibly connected to the extraction box, the vertical cross-section of the limit strip is trapezoidal, and the bottom area of ​​the limit strip is larger than the top area of ​​the limit strip.

[0009] As a preferred embodiment of the present invention, a plurality of the limit strips are provided, and the plurality of limit strips are distributed along the annular array of the threaded column.

[0010] As a preferred embodiment of the present invention, a sealing ring is provided on one side of the limiting strip, and the sealing ring is located between the plurality of limiting strips.

[0011] As a preferred embodiment of the utility model, a through hole is formed on the mounting sleeve, and the water outlet pipe can pass through the through hole. A plurality of protrusions are provided on the circumferential surface of the mounting sleeve, and the plurality of protrusions are fixedly connected to the mounting sleeve and distributed in a circular array along the mounting sleeve.

[0012] As a preferred embodiment of the utility model, a pressure relief valve is provided at one end of the water outlet pipe away from the air pressure pipe, and the pressure relief valve is connected to the double slurry storage chamber; a drain pipe is provided on the bottom side of the extraction box, and the drain pipe is connected to the double slurry storage chamber.

[0013] The beneficial effects of the utility model are:

[0014] 1. As a new type of liquid extraction device for shield construction, the utility model injects the air pressure on the shield machine into the double-liquid slurry storage chamber through the air pressure pipe, and the liquid stored in the extraction box is squeezed out under the action of the high-pressure gas. The modification is simple and convenient, the cost is low, and the principle of basic physics is adopted to avoid long-distance power connection to drive the water pump. At the same time, the extraction box can be loaded on the shield machine equipment, avoiding the long-distance extraction of the double-liquid slurry.

[0015] 2. The traditional electric drive is transformed into the more common pneumatic drive on shield construction equipment, and a 0.8 bar pressure relief valve is used to ensure safety, making the construction safer and more convenient;

[0016] 3. It is easy to use and install, highly practical, and can extract liquid very quickly, greatly shortening the connection time of construction processes;

[0017] 4. The equipment has a low failure rate, and even after a failure, the handling is extremely simple. It is simple and practical and is recommended for promotion and use in the entire industry. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The utility model is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0019] Figure 1 It is a structural schematic diagram of the utility model;

[0020] Figure 2 This utility model Figure 1 A schematic diagram of the enlarged structure at point A;

[0021] Figure 3 This utility model Figure 2 The structural diagram of some parts in the figure;

[0022] In the figure: 1. extraction box; 2. air pressure pipe; 3. pressure relief valve; 4. water outlet pipe; 5. mounting plate; 6. double slurry storage chamber; 7. limit strip; 8. sealing ring; 9. mounting sleeve; 10. external thread; 11. through hole; 12. bump; 13. threaded column; 14. drain pipe. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the utility model, that is, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. The components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0024] Therefore, the following detailed description of the embodiments of the utility model provided in the accompanying drawings is not intended to limit the scope of the utility model claimed for protection, but merely represents selected embodiments of the utility model. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0025] Combine the following Figure 1-3The specific implementation mode of the utility model is described. A new type of liquid extraction device for shield construction includes an extraction box 1. A double slurry storage chamber 6 is formed in the extraction box 1. An air pressure pipe 2 and a water outlet pipe 4 are provided on the extraction box 1. The air pressure pipe 2 and the water outlet pipe 4 are located at the top of the extraction box 1 and are respectively connected to the double slurry storage chamber 6. In order to improve the slag and refill the double slurry during the shield construction process, plastic barrels are required to transport liquid materials during the construction process. By placing the materials into the extraction box 1 for reaction, when the front end of the equipment needs to use it, the liquid after the chemical reaction in the extraction box 1 is directly extracted. The air pressure pipe 2 is used to pass high-pressure gas into the double slurry storage chamber 6. The double slurry storage chamber 6 The liquid is squeezed out of the double slurry storage chamber 6 under the pressure of high-pressure gas, and is transported from the outlet pipe 4 to the front end of the shield machine equipment for processing and use. A mounting sleeve 9 and a threaded column 13 are provided on the top of the extraction box 1. The mounting sleeve 9 and the threaded column 13 are threadedly matched and used to lock the height of the outlet pipe 4 on the extraction box 1. Due to the different amounts of liquid used and the differences in the uniformity of the upper and lower layers of some liquids in the double slurry storage chamber 6, the outlet pipe 4 is inserted into the extraction box 1 at different heights to extract liquids at different heights in the extraction box 1. The mounting sleeve 9 and the threaded column 13 can lock the outlet pipe 4 after movement to prevent the outlet pipe 4 from sliding randomly at a height in the double slurry storage chamber 6.

[0026] In this embodiment, please refer to Figure 1 and 2 As shown, a mounting plate 5 is provided on the top of the extraction box 1, and the air pressure pipe 2 and the water outlet pipe 4 are both connected to the double slurry storage chamber 6 through the mounting plate 5. The mounting plate 5 serves as a mounting carrier for components such as the air pressure pipe 2, the pressure relief valve 3, and the water outlet pipe 4, and its bottom is fixedly connected to the top of the extraction box 1. The threaded column 13 is hollow, and the water outlet pipe 4 can shuttle through the inside of the threaded column 13. The inner wall of the threaded column 13 forms an internal thread, and the bottom of the threaded column 13 is fixedly connected to the top of the extraction box 1. The inside of the threaded column 13 is hollow, and the water outlet pipe 4 can pass through the threaded column 13.

[0027] For further details of this embodiment, please refer to Figure 2 and 3 As shown, the circumferential surface of the installation sleeve 9 is provided with an external thread 10 adapted to the internal thread of the threaded column 13, and the installation sleeve 9 and the threaded column 13 are threadedly matched through the internal thread and the external thread 10, and the internal thread of the threaded column 13 is used for the installation of the installation sleeve 9. Through the mutual threaded cooperation between the installation sleeve 9 and the threaded column 13, the installation sleeve 9 pushes the limit strip 7 to limit the water pipe.

[0028] In this embodiment, please refer to Figure 3As shown, a limit strip 7 is provided in the threaded column 13, and the bottom of the limit strip 7 is flexibly connected to the extraction box 1. The vertical cross-section of the limit strip 7 is a trapezoid, and the bottom surface area of ​​the limit strip 7 is larger than the top surface area of ​​the limit strip 7. Since the shape of the limit strip 7 is that the thickness of the lower end is greater than the thickness of the upper end, during the gradual downward movement of the installation sleeve 9, multiple limit strips 7 will be tilted inward, so that multiple limit strips 7 can limit and lock the water outlet pipe 4.

[0029] For details, please refer to Figure 3 As shown, the limiting strips 7 are provided in plurality, and the limiting strips 7 are distributed in a circular array along the threaded column 13. The plurality of limiting strips 7 can improve the stability of locking the water outlet pipe 4.

[0030] In this embodiment, please refer to Figure 3 As shown, a sealing ring 8 is provided on one side of the limit strip 7, and the sealing ring 8 is located between the plurality of limit strips 7. When the water pipe passes through the mounting plate 5, a gap is formed. In order to extract the liquid in the double slurry storage chamber 6, a sealing ring 8 is added at the gap to seal the double slurry storage chamber 6. The sealing ring 8 is limited between the plurality of limit strips 7 under the action of the plurality of limit strips 7.

[0031] For details of this embodiment, please refer to Figure 2 and 3 As shown, a through hole 11 is formed on the installation sleeve 9, and the water outlet pipe 4 can pass through the through hole 11. A plurality of protrusions 12 are provided on the circumferential surface of the installation sleeve 9. The plurality of protrusions 12 are fixedly connected to the installation sleeve 9 and distributed in a circular array along the installation sleeve 9. The through hole 11 is used for the water outlet pipe 4 to pass through, and the plurality of protrusions 12 are used for applying force when rotating the installation sleeve 9.

[0032] In this embodiment, please refer to Figure 1 As shown, a pressure relief valve 3 is provided at one end of the water outlet pipe 4 away from the air pressure pipe 2, and the pressure relief valve 3 is connected to the double slurry storage chamber 6. The pressure relief valve 3 is used to add materials or avoid the pressure buildup of the extraction box 1 caused by adding too much high-pressure gas. A drain pipe 14 is provided on the bottom side of the extraction box 1. The drain pipe 14 is connected to the double slurry storage chamber 6 and is used to discharge the unused liquid inside the extraction box 1.

[0033] Working principle of this utility model:

[0034] The added additives and raw materials react chemically in the extraction box 1. When the liquid needs to be extracted, the air pressure pipe 2 is connected to the air pressure pipe 2 of the shield machine, and high-pressure gas is injected into the extraction box 1. The liquid stored in the double-liquid slurry storage chamber 6 is squeezed out of the double-liquid slurry storage chamber 6 by the high-pressure gas, and is transported to the front end of the shield machine through the outlet pipe 4 for use.

[0035] The height of the bottom of the water outlet pipe 4 in the extraction box 1 can be adjusted. Since some liquids are flocculent and sink due to gravity, the height of the bottom of the water outlet pipe 4 in the extraction box 1 is changed to extract liquids of different layers. The external thread 10 on the circumference is threadedly matched with the internal thread of the threaded column 13 by rotating the installation sleeve 9. The multiple limit bars 7 are driven to tilt inward by the continuous downward movement of the installation sleeve 9, so that the multiple limit bars 7 after tilting limit and lock the water outlet pipe 4. Since the limit bars 7 are tapered, the thickness of the lower end is greater than the thickness of the top end. During the continuous rotation and downward movement, the multiple limit bars 7 limit the water outlet pipe 4 more and more tightly.

[0036] The pressure relief valve 3 can prevent the double slurry storage chamber 6 from being pressurized due to excessive high-pressure gas flow, and the drain pipe 14 is used to discharge the unused remaining liquid.

[0037] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", etc. should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] The above contents are merely examples and explanations of the structure of the utility model. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the utility model or exceed the scope defined in the claims, they should all fall within the protection scope of the utility model.

Claims

1. A new type of liquid extraction device for shield construction, characterized in that: It includes an extraction box, in which a double slurry storage cavity is formed. An air pressure pipe and a water outlet pipe are provided on the extraction box. The air pressure pipe and the water outlet pipe are located at the top of the extraction box and are respectively connected to the double slurry storage cavities. A mounting sleeve and a threaded column are provided on the top of the extraction box. The mounting sleeve and the threaded column are threadedly matched and are used to lock the height of the water outlet pipe on the extraction box.

2. A new type of liquid extraction device for shield construction according to claim 1, characterized in that: A mounting plate is provided on the top of the extraction box, and the air pressure pipe and the water outlet pipe are both connected to the dual slurry storage chamber through the mounting plate. The threaded column is hollow, and the water outlet pipe can shuttle through the interior of the threaded column. The inner wall of the threaded column forms an internal thread, and the bottom of the threaded column is fixedly connected to the top of the extraction box.

3. A new type of liquid extraction device for shield construction according to claim 2, characterized in that: The peripheral surface of the installation sleeve is provided with an external thread matched with the internal thread of the threaded column, and the installation sleeve and the threaded column are threadably matched through the internal thread and the external thread.

4. A new type of liquid extraction device for shield construction according to claim 1, characterized in that: A limiting strip is arranged in the threaded column, the bottom of the limiting strip is flexibly connected to the extraction box, the vertical cross section of the limiting strip is trapezoidal, and the bottom surface area of ​​the limiting strip is larger than the top surface area of ​​the limiting strip.

5. A new type of liquid extraction device for shield construction according to claim 4, characterized in that: There are multiple limit strips, and the multiple limit strips are distributed along the annular array of the threaded column.

6. A new type of liquid extraction device for shield construction according to claim 5, characterized in that: A sealing ring is provided on one side of the limiting strip, and the sealing ring is located between the plurality of limiting strips.

7. A new type of liquid extraction device for shield construction according to claim 6, characterized in that: A through hole is formed on the installation sleeve, and the water outlet pipe can pass through the through hole. A plurality of protrusions are arranged on the circumference of the installation sleeve, and the plurality of protrusions are fixedly connected to the installation sleeve and distributed in a ring array along the installation sleeve.

8. The novel liquid extraction device for shield construction according to claim 1 is characterized by: A pressure relief valve is provided at one end of the water outlet pipe away from the air pressure pipe, and the pressure relief valve is communicated with the double slurry storage chamber; a drainage pipe is provided on the bottom side of the extraction box, and the drainage pipe is communicated with the double slurry storage chamber.

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