Construction equipment for sand blasting and filling between main pipeline and sleeve

Abstract

The utility model provides sand blasting filling construction equipment between a main pipeline and sleeves, which comprises a sand blasting lifting ring, a sand blasting device, a sand blasting device and a sand blasting device, and is characterized in that the sand blasting lifting ring is mounted between adjacent sleeves; the sand blowing pipe is installed between the main pipeline and the concrete casing pipe, and the sand blowing pipe is located on the inner side of the sand blowing hanging ring; the discharging end of the sand blowing device is communicated with the sand blowing pipe; and a water outlet of the spraying device is positioned at the opening of the sleeve. The sand blowing device has the beneficial effects that the spraying device is additionally arranged, so that the dust pollution problem during sand blowing is solved, and the influence of sand blowing on the surrounding environment is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of pipe jacking construction, in particular to a sand blowing and filling construction device between a main pipeline and a casing pipe. Background Art

[0002] In the process of urban underground pipeline construction, it is inevitable to involve excavation methods such as jacking, concealed excavation, pipe pulling, and support excavation. However, the dense and complex underground obstacles will cause difficulties for underground pipeline construction. When jacking construction crosses roads, railways and existing buildings, the project generally sets up a protective casing, and then lays a working pipeline in the casing. In order to ensure the stability of the working pipeline in the casing, it is necessary to fill medium sand between the casing and the inner pipe. The conventional practice is to pre-set the pipes between the outer casing and the inner pipe in advance, but uniform filling cannot be guaranteed. The more advanced sand blowing device sets a sand blowing pipeline sliding device on the top of the casing. Although it can be filled evenly, in the actual construction process, it is often limited by the underground space in the city. The clearance between the outer casing and the inner pipe is small, there is no space for the sand blowing pipeline sliding device, and the installation process is complicated. The sand blasting machine uses manual loading, which is time-consuming and labor-intensive. There is also a mismatch between the sand blasting speed and the loading speed, which increases the cost of sand blasting. The traditional sand blasting pipe is made of rubber and has a large deflection. The sand blasting resistance increases during long-distance sand blasting, which can easily cause the sand blasting machine to be overloaded and damaged or fail to achieve the ideal sand blasting distance. If there are large pebbles or clods of soil in the sand used for sand blasting, it can easily cause the sand blasting pipe to be blocked, resulting in failure of sand blasting. Dust pollution will be generated during sand blasting, which will affect the surrounding environment. Utility Model Content

[0003] In view of this, the utility model aims to provide a sand blowing and filling construction equipment between the main pipeline and the casing, in the hope of solving at least one of the above-mentioned technical problems.

[0004] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0005] A sand blowing and filling construction equipment between a main pipeline and a casing, comprising:

[0006] A sand blowing lifting ring, wherein the sand blowing lifting ring is installed between adjacent casings;

[0007] A sand blowing pipe, which is installed between the main pipeline and the concrete casing, and is located on the inner side of the sand blowing ring;

[0008] A sand blowing device, wherein a discharge end of the sand blowing device is connected to a sand blowing pipe;

[0009] A spray device, wherein the water outlet of the spray device is located at the opening of the sleeve.

[0010] Furthermore, the sand blowing device includes a sand blowing machine and a sand sucking machine, the sand sucking machine is fixedly connected to the bracket, and the discharge port of the sand sucking machine is located above the feed port of the sand blowing machine;

[0011] The sand suction machine comprises a steel spiral, an Oxford tube and a motor. The steel spiral is installed on the inner side of the Oxford tube, the output shaft of the motor is fixedly connected to the steel spiral, and a discharge port is opened on the side wall of one end of the Oxford tube adjacent to the motor.

[0012] Furthermore, a filter is provided between the discharge port of the sand suction machine and the feed port of the sand blasting machine, the aperture of the filter is larger than the diameter of the sand blasting, and the aperture of the filter is smaller than the diameter of the discarded material.

[0013] Furthermore, a circular casing is fixedly provided on the outer wall of the filter screen, the filter screen is arranged at an angle, a waste port is opened on the bottom end of the filter screen, a connecting ring 1 is fixedly provided on the outer wall of the circular casing, a connecting ring 2 is fixedly provided on the feed port of the sand blowing machine, a connecting bolt is provided on the inner side of the connecting ring 1, the connecting bolt passes through the connecting ring 1 and the connecting ring 2 in sequence and is threadedly connected with a nut, and a spring gasket is provided between the nut and the connecting ring 2.

[0014] Furthermore, the spray device includes a high-pressure atomizing nozzle head, a first connecting hose, and a second connecting hose. There are multiple high-pressure atomizing nozzle heads, and the multiple high-pressure atomizing nozzle heads are evenly arranged circumferentially along the sleeve. The high-pressure atomizing nozzle heads are fixed on the sleeve, and adjacent high-pressure atomizing nozzles are connected by a first connecting hose. The adjacent high-pressure atomizing nozzles at the end are connected to the liquid outlet end of the water pump through the second connecting hose, and the liquid inlet end of the water pump is connected to the water tank.

[0015] Furthermore, the spray diameter ranges of adjacent high-pressure atomizing nozzles overlap.

[0016] Furthermore, it also includes a pipeline high-definition probe, which is fixedly connected to the front end of the sand blasting pipe.

[0017] Furthermore, the sand blasting pipe is welded from a plurality of seamless steel pipes, the seamless steel pipe is connected to a special sand blasting rubber pipe via a steel quick connector, and the special sand blasting rubber pipe is connected to a sand outlet end of the sand blasting machine.

[0018] Furthermore, the sand-blowing lifting ring comprises a T-shaped block, a circular ring is fixedly provided at the lower end of the T-shaped block, wooden pads are provided between adjacent sleeves, mounting grooves corresponding to the T-shaped block are opened on the wooden pads, the T-shaped block is installed on the inner side of the mounting groove, rubber pads are fixedly provided on both sides of the T-shaped block, and the sand-blowing pipe is located on the inner side of the circular ring.

[0019] Compared with the prior art, the sand blowing and filling construction equipment between the main pipeline and the casing described in the utility model has the following beneficial effects:

[0020] (1) The utility model discloses a sand blowing and filling construction equipment between a main pipeline and a casing, and an additional spraying device is provided to solve the dust pollution problem during sand blowing and avoid the impact of sand blowing on the surrounding environment.

[0021] (2) The utility model discloses a sand blowing and filling construction equipment between a main pipeline and a casing. An automatic feeder is arranged above the sand blowing machine. The motor is additionally provided with an electromagnetic speed regulator. By adjusting the motor speed, the feeding speed and the sand blowing speed are matched, thereby improving the sand blowing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0023] Figure 1 This is a schematic structural diagram of a sand blasting device according to an embodiment of the utility model;

[0024] Figure 2 This is a schematic structural diagram of a sand blasting machine according to an embodiment of the utility model;

[0025] Figure 3 This is a schematic diagram of the filter structure described in an embodiment of the utility model;

[0026] Figure 4 This is a schematic diagram of the installation structure of the spray device and the sand blowing pipe according to the embodiment of the utility model;

[0027] Figure 5 This is a schematic diagram of the installation structure of the spray device according to an embodiment of the utility model;

[0028] Figure 6 This is a schematic diagram of the use of the sand blasting lifting ring structure described in an embodiment of the utility model.

[0029] Description of reference numerals:

[0030] 1. Sand blasting machine; 2. Motor; 3. Oxford tube; 4. Steel spiral; 5. Sand pile; 6. Filter; 7. Casing; 8. High-pressure atomizing nozzle; 9. Sand blasting ring; 10. Pipeline high-definition probe; 11. Sand blasting tube; 101. Air compressor; 201. Electromagnetic speed regulator; 202. Bracket; 601. Round casing; 602. Waste port; 801. First connecting hose; 802. Second connecting hose; 803. Water pump; 804. Water tank; 901. T-block; 902. Ring. DETAILED DESCRIPTION

[0031] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0032] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0033] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" 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 it can be 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 by specific circumstances.

[0034] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0035] like Figures 1 to 6 As shown, a sand blowing and filling construction equipment between a main pipeline and a casing comprises:

[0036] A sand blowing lifting ring 9 is installed between adjacent casing pipes 7;

[0037] A sand blowing pipe 11 is installed between the main pipeline and the concrete casing 7, and the sand blowing pipe 11 is located on the inner side of the sand blowing ring 9;

[0038] A sand blowing device, wherein the discharge end of the sand blowing device is connected to the sand blowing pipe 11;

[0039] A spray device, the water outlet of the spray device is located at the opening of the sleeve 7.

[0040] The sand blowing device comprises a sand blowing machine 1 and a sand sucking machine, the sand sucking machine is fixedly connected to the bracket 202, and the discharge port of the sand sucking machine is located above the feed port of the sand blowing machine 1;

[0041] The sand suction machine includes a steel spiral 4, an Oxford tube 3, and a motor 2. The steel spiral 4 is installed on the inner side of the Oxford tube 3. The output shaft of the motor 2 is fixedly connected to the steel spiral 4. A discharge port is provided on the side wall of the Oxford tube 3 near the motor 2. The suction force generated by the steel spiral 4 driven by the motor 2 can realize automatic feeding of sand in the sand pile to the feeding port of the sand blowing machine 1; the rotation speed of the motor 2 is adjusted by the electromagnetic speed regulator 201 to ensure that the feeding speed is consistent with the sand blowing speed, so as to avoid excessive or insufficient feeding affecting the efficiency of the sand blowing machine 1.

[0042] A filter screen 6 is provided between the discharge port of the sand suction machine and the feed port of the sand blasting machine 1. The aperture of the filter screen 6 is larger than the diameter of the sand blasting, and the aperture of the filter screen 6 is smaller than the diameter of the waste material. A circular casing 601 is fixedly provided on the outer wall of the filter screen 6. The filter screen 6 is arranged obliquely. The circular casing 601 has a waste material port 602 at the bottom end of the filter screen 6. A connecting ring 1 is fixedly provided on the outer wall of the circular casing 601. A connecting ring 2 is fixedly provided on the feed port of the sand blasting machine 1. A connecting bolt is provided on the inner side of the connecting ring 1. The connecting bolt passes through the connecting ring 1 and the connecting ring 2 in sequence and is threadedly connected to a nut. A spring gasket is provided between the nut and the connecting ring 2. The waste material flows out through the waste material port 602 to prevent the waste material from piling up on the filter screen 6 and affecting the sand blasting efficiency.

[0043] The spray device includes a high-pressure atomizing nozzle head 8, a first connecting hose 801, and a second connecting hose 802. There are multiple high-pressure atomizing nozzle heads 8, and the multiple high-pressure atomizing nozzle heads 8 are evenly arranged circumferentially along the sleeve 7. The high-pressure atomizing nozzle heads 8 are fixed on the sleeve 7. Adjacent high-pressure atomizing nozzles are connected by the first connecting hose 801, and the adjacent high-pressure atomizing nozzles at the end are connected to the liquid outlet end of the water pump 803 through the second connecting hose 802, and the liquid inlet end of the water pump 803 is connected to the water tank 804.

[0044] The spray diameter ranges of adjacent high-pressure atomizing nozzles overlap.

[0045] The device also includes a pipeline high-definition probe 10 , which is fixedly connected to the front end of the sand blasting pipe 11 .

[0046] The sand blasting pipe 11 is welded from a plurality of seamless steel pipes, the seamless steel pipe is connected to a special sand blasting rubber pipe via a steel quick connector, and the special sand blasting rubber pipe is connected to a sand outlet end of the sand blasting machine 1 .

[0047] The sand-blowing lifting ring 9 comprises a T-shaped block 901, a circular ring 902 is fixedly arranged at the lower end of the T-shaped block 901, wooden pads are arranged between adjacent sleeves 7, mounting grooves corresponding to the T-shaped block 901 are opened on the wooden pads, the T-shaped block 901 is installed on the inner side of the mounting groove, rubber pads are fixedly arranged on both sides of the T-shaped block 901, and the sand-blowing pipe 11 is located on the inner side of the circular ring 902.

[0048] Working process:

[0049] First, the concrete casing 7 is pushed forward. When it is pushed forward to a certain position, the second section of the concrete casing 7 is hoisted onto the jacking guide rail. Before the second section of the concrete casing 7 is pushed forward, the sand blowing ring 9 is installed and tightened with the first section of the pipe. The operation is as follows: Use a measuring tool to find the position directly above the wooden pad ring of the second section of the casing 7, and open an installation groove according to the size of the T-shaped block 901 of the sand blowing ring 9. After the hole is opened, the T-shaped block 901 is installed. Then, the jacking cylinder is used to tighten the second section of the casing 7 with the first section of the casing 7. In this way, the installation of the first sand penetration ring is completed; each subsequent section of the concrete casing 7 is installed with the sand blowing ring 9 according to the above steps;

[0050] After the concrete casing 7 is pushed in, the 50mm diameter sandblasting seamless steel pipe (with the same inner diameter as the sandblasting rubber tube) is laid before the main pipeline is installed. The seamless steel pipe passes through the sandblasting ring 9 in turn during installation. Every 0.5m is installed to the deepest point, and the specific number of meters is marked on the steel pipe with a marker pen. The number of meters marked from the deepest point of the filling to the position of the steel quick connector 8 is from large to small, which can accurately control the length of each section of sandblasting construction to ensure the quality of sandblasting; the video signal cable is installed together with the seamless steel pipe, and the video signal cable is fixed to the seamless steel pipe with transparent tape at a certain distance. The pipeline high-definition probe 10 is connected to the signal cable, and the high-definition probe is placed just above the sand outlet of the seamless steel pipe and about 5-10cm behind; the seamless steel pipe is installed about 50cm outside the entrance. Then the main pipeline is pushed in and installed until all laying is completed. Then, the special sand-blowing rubber pipe is connected to the straight seam steel pipe by using a steel quick joint, the special sand-blowing rubber pipe end is fixed to the quick joint by bolts, the straight seam steel pipe and the quick joint are fixed by welding, and the special sand-blowing rubber pipe is connected to the sand-blowing machine 1.

[0051] After the construction of the working pipeline is completed, the spray device is installed. The spray hose is installed along the outer wall of the concrete casing 7 at a certain distance (10-20cm) and fixed to the concrete water stop wall with a pipe clamp; a high-pressure atomizing nozzle 8 is set at a certain interval. To ensure the spraying effect, the spray diameter ranges of the two high-pressure atomizing nozzles 8 overlap to a certain extent.

[0052] Before sand blasting, brickwork or concrete structure is used to seal the concrete casing 7 and the end of the working pipe, and the seamless steel pipe is inserted into the deepest part of the casing 7 to start sand blasting. After the space between the innermost casing 7 and the main pipe is filled with sand, the seamless steel pipe is dragged back while filling sand until the gap between the casing 7 and the inner pipe is filled with sand.

[0053] During the sand blasting process, in the initial stage, the area to be filled is large, the amount of sand blasting is large, and the sand blasting elevation rises slowly. By adjusting the air compressor 101, a larger sand blasting pressure can be appropriately selected, and the electromagnetic speed regulator 201 can be adjusted to increase the feeding speed and speed up the sand blasting progress. After the sand blasting elevation reaches two-thirds of the elevation of the inner steel pipe, the area to be filled is small, the amount of sand blasting is reduced, and the sand blasting elevation rises faster. It is appropriate to reduce the sand blasting pressure, slow down the sand blasting progress, and reduce the impact on the plugging. By observing the images of the video monitoring device, dynamic monitoring of sand blasting pressure, elevation, gaps, etc. is implemented; the withdrawn seamless steel pipe is cut off every 4-6m of filling in the hole, and the seamless steel pipe in the hole is re-welded and fixed with the steel quick connector to continue the sand blasting operation.

[0054] Beneficial effects:

[0055] 1. The sand blowing tube 11 in the pipeline is conventionally made of rubber, which has a large deflection. When blowing sand over a long distance, the sand blowing resistance increases, which can easily cause the sand blowing machine 1 to be overloaded and damaged or fail to reach the ideal sand blowing distance. The utility model adopts a straight seam steel pipe between the main pipeline and the casing 7, which has the characteristics of high strength, high wear resistance, low cost, and reusability.

[0056] 2. The traditional method is to calculate the sand blowing effect by estimating the sand blowing amount and the state of the sand blowing machine 1 based on experience. In the sand blowing process of the present invention, a video monitoring device is arranged, which can move synchronously with the sand blowing pipe 11, and can monitor the sand blowing situation in the hole in real time. The sand blowing quality can be controlled, avoiding relying on experience to determine the construction quality.

[0057] 3. The sand blasting machine 1 adopts manual loading, which is time-consuming and labor-intensive. There is also a mismatch between the sand blasting speed and the loading speed, which increases the sand blasting cost. An automatic loader is arranged above the sand blasting machine 1, and the motor 2 is additionally equipped with an electromagnetic speed regulator 201. By adjusting the speed of the motor 2, the loading speed and the sand blasting speed are matched, thereby improving the sand blasting efficiency.

[0058] 4. The conventional practice is to use a screen to manually screen the medium sand before sand blowing to screen out mud blocks and large-diameter sand and gravel. The utility model provides a steel grid above the artificial sand blowing machine 1, which can directly screen the sand and gravel during the process of loading the machine, thereby reducing the screening labor cost;

[0059] 5. Traditional sand blowing will generate dust, which will affect the occupational health of production workers and the surrounding environment. The utility model adds a spray device at the hole opening to solve the dust pollution problem during sand blowing and avoid the impact of sand blowing on the surrounding environment.

[0060] 6. It does not damage the original casing and main pipeline structure, and can ensure uniform filling.

[0061] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the utility model, and they should all be included in the scope of the claims and specification of the utility model.

[0062] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A sand blowing and filling construction equipment between the main pipeline and the casing, characterized in that: include: A sand blowing lifting ring (9), wherein the sand blowing lifting ring (9) is installed between adjacent sleeves (7); A sand blowing pipe (11), the sand blowing pipe (11) is installed between the main pipeline and the concrete casing (7), and the sand blowing pipe (11) is located on the inner side of the sand blowing lifting ring (9); A sand blowing device, wherein a discharge end of the sand blowing device is connected to a sand blowing pipe (11); A spray device, wherein the water outlet of the spray device is located at the opening of the sleeve (7).

2. The sand blowing and filling construction equipment between the main pipeline and the casing according to claim 1, characterized in that: The sand blowing device comprises a sand blowing machine (1) and a sand sucking machine, wherein the sand sucking machine is fixedly connected to a bracket (202), and an outlet of the sand sucking machine is located above an inlet of the sand blowing machine (1); The sand suction machine comprises a steel spiral (4), an Oxford tube (3), and a motor (2). The steel spiral (4) is installed on the inner side of the Oxford tube (3), the output shaft of the motor (2) is fixedly connected to the steel spiral (4), and a discharge port is opened on the side wall of one end of the Oxford tube (3) adjacent to the motor (2).

3. The sand blowing and filling construction equipment between the main pipeline and the casing according to claim 2, characterized in that: A filter screen (6) is provided between the discharge port of the sand suction machine and the feed port of the sand blowing machine (1); the aperture of the filter screen (6) is larger than the diameter of the sand blasting, and the aperture of the filter screen (6) is smaller than the diameter of the discarded material.

4. The sand blowing and filling construction equipment between the main pipeline and the casing according to claim 3, characterized in that: A circular protective sleeve (601) is fixedly provided on the outer wall of the filter screen (6), the filter screen (6) is arranged obliquely, a waste material opening (602) is opened at the bottom end of the filter screen (6), a connecting ring 1 is fixedly provided on the outer wall of the circular protective sleeve (601), a connecting ring 2 is fixedly provided on the feed inlet of the sand blowing machine (1), a connecting bolt is provided on the inner side of the connecting ring 1, the connecting bolt passes through the connecting ring 1 and the connecting ring 2 in sequence and is threadedly connected to a nut, and a spring gasket is provided between the nut and the connecting ring 2.

5. The sand blowing and filling construction equipment between the main pipeline and the casing according to claim 1, characterized in that: The spray device comprises a high-pressure atomizing nozzle head (8), a first connecting hose (801), and a second connecting hose (802). The number of the high-pressure atomizing nozzle heads (8) is multiple, and the multiple high-pressure atomizing nozzle heads (8) are evenly arranged along the circumference of the sleeve (7). The high-pressure atomizing nozzle heads (8) are fixed on the sleeve (7), and adjacent high-pressure atomizing nozzles are connected through the first connecting hose (801). The adjacent high-pressure atomizing nozzles at the end are connected to the liquid outlet of the water pump (803) through the second connecting hose (802), and the liquid inlet of the water pump (803) is connected to the water tank (804).

6. The sand blowing and filling construction equipment between the main pipeline and the casing according to claim 5, characterized in that: The spray diameter ranges of adjacent high-pressure atomizing nozzles overlap.

7. The sand blowing and filling construction equipment between the main pipeline and the casing according to claim 1, characterized in that: It also comprises a pipeline high-definition probe (10), which is fixedly connected to the front end of the sand blasting pipe (11).

8. The sand blowing and filling construction equipment between the main pipeline and the casing according to claim 1, characterized in that: The sand blasting pipe (11) is obtained by welding a plurality of seamless steel pipes, the seamless steel pipe is connected to a special sand blasting rubber pipe via a steel quick connector, and the special sand blasting rubber pipe is connected to the sand outlet end of the sand blasting machine (1).

9. The sand blowing and filling construction equipment between the main pipeline and the casing according to claim 1, characterized in that: The sand-blowing lifting ring (9) comprises a T-shaped block (901), a circular ring (902) is fixedly arranged at the lower end of the T-shaped block (901), a wooden pad ring is arranged between adjacent sleeves (7), a mounting groove corresponding to the T-shaped block (901) is opened on the wooden pad ring, the T-shaped block (901) is installed on the inner side of the mounting groove, rubber pads are fixedly arranged on both sides of the T-shaped block (901), and the sand-blowing pipe (11) is located on the inner side of the circular ring (902).

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