Multifunctional grouting device capable of being matched with PVC pipe for grouting

Abstract

A multifunctional grouting device capable of being matched with a PVC pipe for grouting is characterized in that two galvanized steel pipes are welded to a perforated galvanized steel pipe, the two galvanized steel pipes are welded in a high-low mode, a carbon steel nipple connector is connected to the galvanized steel pipes, and a drilling machine 108 seamless steel sleeve head with wires is located above the carbon steel nipple connector; the perforated galvanized steel pipe is connected with a grouting pressure gauge through a grouting pressure gauge connecting device, and the PVC 32 electrical conduit is provided with a grouting area hole. Operation steps are fewer, used accessories are more saved, needed materials are single, independent purchasing and machining can be achieved, the cost is controllable, the grouting capacity is large, the adjusting space is large, the grout stopping effect is good, applicability is high, the grouting device can be suitable for grouting construction of some special materials and special construction areas, the hole sealing effect is achieved, and the grouting device is detachable and can be repeatedly used; and grouting construction can be carried out by matching with a sleeve valve pipe, so that the grouting effect and the grouting material cost are greatly controlled and improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the grouting construction technical field, concretely relates to a kind of multifunctional grouting device of PVC pipe grouting. BACKGROUND

[0002] At present in the field of tunnel and underground engineering, groundwater resources are rich in some areas, and the geological conditions are complex, and the rock stratum karst development is higher, to prevent bedrock fissure water and underground river from causing harm to underground engineering construction, avoid the existence of karst cave to influence the overall quality and cost of underground engineering construction, need to carry out grouting treatment to karst cave and stratum with uneven hardness and insufficient stability, when the foundation pit occurs gushing, corresponding grouting plugging treatment is also needed, since the overall effect of traditional sleeve valve pipe plus galvanized pipe grouting process is not good when deep grouting and hole sealing, the grouting amount is insufficient when resisting gushing pressure grouting, cannot adopt the commonly used casing material and cement for hole sealing, when using some materials with large viscosity and special performance for grouting plugging treatment, traditional sleeve valve pipe plus galvanized pipe grouting process and grouting joint device also have certain limitations, and when grouting above shield interval, sleeve valve pipe plus galvanized pipe grouting process is prone to grouting galvanized pipe cannot be pulled out, thereby affecting the efficiency of shield propulsion, and causing wear to cutter head. SUMMARY

[0003] In order to overcome the above-mentioned deficiencies of the prior art, the utility model aims to provide a multifunctional grouting device that can be used with PVC pipe grouting. The device can be used with PVC pipe for grouting, and the diameter of the PVC pipe can be adjusted according to the construction needs to achieve large-volume grouting. It is suitable for grouting in areas with special requirements for materials, such as shield propulsion and pipe jacking construction areas. The device has a self-sealing effect and does not require additional materials such as casing material and cement grout for sealing. It is made of single material and can be processed independently. It has a wide range of applications, strong functionality, easy operation, high efficiency, and can be used with steel casing pipes and large steel flower pipes provided by geological drilling machines for grouting. It is detachable and reusable, can adapt to grouting construction under various conditions to the greatest extent, and ensures the overall quality of grouting.

[0004] To achieve the above-mentioned purpose, the utility model adopts the technical scheme of:

[0005] A multi-functional grouting device compatible with PVC pipe grouting includes a threaded seamless steel sleeve head, a galvanized steel pipe, a threaded connector, a copper internal threaded connector for PVC water supply pipes, a PVC electrical conduit, a grouting pressure gauge connection device, and a grouting pressure gauge. The corresponding connecting components are welded into place and connected accordingly. The PVC pipe is pre-drilled in the grouting area before being lowered. After the PVC pipe is lowered, the threaded 108 steel sleeve head is threaded onto the steel perforated pipe or the steel pipe provided with the drilling rig. Once connected, the steel sleeve head and the steel perforated pipe form a single unit, achieving integrated sealing and grouting. After grouting, the device can be disassembled and reused.

[0006] The traditional geological drilling rig features a 108 seamless steel casing head with threaded connection to the steel pipe or steel casing, ensuring a tight, airtight seal.

[0007] The traditional geological drilling rig uses a 108 seamless steel casing head with a wall thickness of 4.5mm, and its outer diameter is consistent with that of the steel pipe or the outer diameter of the geological drilling rig's steel casing.

[0008] The aforementioned perforated DN40 galvanized steel pipe, with an outer diameter of 48.3mm and a wall thickness of 3.5mm, can be welded with corresponding joint devices. The upper part is connected to a pressure gauge, and the lower part is connected to a grouting galvanized pipe or a perforated PE pipe, achieving the effect of simultaneous grouting while visually demonstrating the grouting pressure inside the pipe.

[0009] The DN32 galvanized steel pipe, with an outer diameter of 42.4mm and a wall thickness of 3.5mm, can be welded with threaded joints on both sides to connect to grouting pipes with valves, enabling single or double liquid grouting adjustment.

[0010] The aforementioned PVC32 water supply pipe copper internal thread connector has an inner diameter of 32mm and a copper internal thread of 1 inch. It can effectively connect the PVC pipe to the grouting head, realizing the conversion of the grouting pipeline from steel pipe to PVC pipe.

[0011] The PVC32 electrical conduit (with opening in the grouting area) (7) has an outer diameter of 32mm and a wall thickness of 2.4mm. Compared with traditional galvanized pipes, it has a lower cost and stronger applicability. It can effectively avoid the impact on tunnel boring machines, pipe jacking facilities and other operating equipment, and improve operating efficiency.

[0012] The beneficial effects of this utility model are:

[0013] Compared with traditional sleeve valve pipe grouting devices with galvanized pipes, this method involves fewer operation steps, uses fewer accessories, requires only a single material, can be independently procured and processed, has controllable costs, can handle large grouting capacity, offers ample adjustment space, provides excellent grout-stopping effect, is highly adaptable, and can be used for grouting construction of some special materials and special construction areas. It also has a built-in sealing function, is detachable and reusable, and can be used in conjunction with sleeve valve pipes for grouting construction, which greatly improves the control and improvement of grouting effect and grouting material cost. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the various parts and components of this utility model;

[0016] Figure 3 This is a schematic diagram of the working state of this utility model.

[0017] Among them, 1 is a DN40 galvanized steel pipe with opening, 2 is a DN32 galvanized steel pipe, 3 is a traditional geological drilling rig 108 seamless steel casing head with wire, 4 is a DN32 carbon steel threaded connector, 5 is a PVC32 water supply pipe copper internal thread connector, 6 is a grouting pressure gauge connection device, 7 is a PVC32 electrical conduit (with opening in the grouting area), and 8 is a grouting pressure gauge. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings.

[0019] A multi-functional grouting device compatible with PVC pipe grouting includes a perforated DN40 galvanized steel pipe (1), a DN32 galvanized steel pipe (2), a drill rig threaded 108 seamless steel sleeve head (3), a DN32 galvanized steel pipe (2) welded onto the perforated DN40 galvanized steel pipe (1), a drill rig threaded 108 seamless steel sleeve head (3) passing through the perforated DN40 galvanized steel pipe (1), and the perforated DN40 galvanized steel pipe (1) connected to a PVC32 water supply pipe copper internal threaded joint (5) via a DN32 carbon steel threaded connector (4). The casing is characterized in that two DN32 galvanized steel pipes (2) are welded on the DN40 galvanized steel pipe (1) with an opening. The two DN32 galvanized steel pipes (2) are welded one high and one low. A DN32 carbon steel threaded connector (4) is connected to the DN32 galvanized steel pipe (2). The drill rig's 108 seamless steel casing head (3) with wire is located above the DN32 carbon steel threaded connector (4). The DN40 galvanized steel pipe (1) with an opening is connected to the grouting pressure gauge (8) through the grouting pressure gauge connection device (6). The PVC32 electrical casing (7) is provided with an opening in the grouting area. The corresponding connecting parts are welded in place and connected accordingly. The PVC pipe is pre-drilled in the grouting area. After the grouting PVC pipe is lowered, the 108 steel casing head with wire is connected to the steel flower pipe or the drill rig's own steel pipe with wire. After the connection is completed, the steel casing head and the steel flower pipe are connected as a whole, which achieves the effect of sealing and grouting in one. After grouting is completed, the device can be disassembled and reused.

[0020] Implementation: Using a traditional geological drilling rig with a 108 seamless steel casing head as a base, a perforated DN40 galvanized steel pipe is inserted into the middle of the casing head and welded securely. Then, perforations are made on both sides of the DN40 galvanized steel pipe, and DN32 horizontal galvanized steel pipes are welded on. The upper part of the vertical galvanized pipe is connected to the grouting pressure gauge via a welded pressure gauge connection device. The lower part is welded with a threaded joint, and then the PVC water supply pipe is connected to the threaded joint via a copper internal threaded connector to form a grouting channel. The horizontal galvanized pipe is welded to the threaded joint and then connected to the grouting pipe with a switch via the threaded joint. Before grouting, all relevant joints of this device are welded in place, connected to the PVC grouting pipe and pressure gauge, and the device is tightened to the casing with threads before grouting begins.

[0021] The traditional geological drilling rig features a 108 seamless steel casing head with threaded connection to the steel pipe or steel casing, ensuring a tight, airtight seal.

[0022] The traditional geological drilling rig with 108 seamless steel casing head (3) is the component with the largest diameter in the entire device. The steel casing wall thickness is 4.5mm, the outer diameter is 108mm, and the thread length of the seamless steel casing head is 60mm. Its overall diameter is consistent with the diameter of the grouting steel pipe.

[0023] The DN32 galvanized steel pipe (2) has an outer diameter of 42.4 mm, a wall thickness of 3.5 mm, and a length of 70 mm.

[0024] The DN40 galvanized steel pipe (1) with an outer diameter of 48.3 mm, a wall thickness of 3.5 mm, and a length of 500 mm is described.

[0025] The PVC32 water supply pipe copper internal thread connector (5) has an inner diameter of 32mm and a copper internal thread of 1 inch. It can effectively connect the PVC pipe to the grouting head, realizing the conversion of the grouting pipeline from steel pipe to PVC pipe.

[0026] The PVC32 electrical conduit (with opening in the grouting area) (7) has an outer diameter of 32mm and a wall thickness of 2.4mm. PVC pipes within the height range corresponding to the grouting area require manual opening in advance. Compared to traditional galvanized pipes, it has lower costs, greater applicability, and can effectively avoid impacting tunnel boring machines, pipe jacking facilities, and other operating equipment, thus improving operational efficiency.

[0027] The above-mentioned construction method for a multi-functional grouting device that can be used with PVC pipe grouting includes the following steps:

[0028] Step 1: In the area where grouting treatment is required, first use geological drilling to perform core drilling. The 108 steel casing that comes with the geological drilling rig can be used as a wall protection and grouting measure for the non-treatment section. Alternatively, the grouting steel pipe can be lowered down to the geological depth where grouting treatment is required.

[0029] Step 2: Lower the perforated PVC pipe into the 108 steel casing of the steel pipe or geological drilling rig to the geological depth where grouting is required.

[0030] Step 3: Connect the device to the corresponding facilities and then lower the device until the casing head contacts the steel pipe or the steel casing of the geological drilling rig.

[0031] Step 4: By rotating the device, the device is threadedly connected to the steel pipe or the steel casing of the geological drilling rig, so that the connection between the device and the steel pipe or the steel casing is tight, so as to achieve the effect of grouting with PVC pipe and the effect of grouting and sealing in one step.

[0032] Step 5: Connect the DN32 galvanized steel pipe welded joints on the left and right sides of the device to the grouting pipe with valve, so as to achieve the effect of adjusting grouting and stopping grouting with single or double liquid grout.

Claims

1. A multi-functional grouting device that can be used with PVC pipe grouting, comprising a perforated DN40 galvanized steel pipe (1), a DN32 galvanized steel pipe (2), a drill rig threaded 108 seamless steel sleeve head (3), the DN40 galvanized steel pipe (1) being welded to the perforated DN40 galvanized steel pipe (1), the drill rig threaded 108 seamless steel sleeve head (3) being passed through the perforated DN40 galvanized steel pipe (1), and the perforated DN40 galvanized steel pipe (1) being connected to a PVC32 electrical conduit via a DN32 carbon steel threaded connector (4) and a PVC32 water supply pipe copper internal thread connector (5), characterized in that, Two DN32 galvanized steel pipes (2) are welded onto the DN40 galvanized steel pipe (1). The two DN32 galvanized steel pipes (2) are welded one high and one low. A DN32 carbon steel threaded connector (4) is connected to the DN32 galvanized steel pipe (2). The drill rig wire-loaded 108 seamless steel sleeve head (3) is located above the DN32 carbon steel threaded connector (4). The DN40 galvanized steel pipe (1) is connected to the grouting pressure gauge (8) through the grouting pressure gauge connection device (6). The PVC32 electrical conduit (7) is provided with grouting area openings.

2. The multifunctional grouting device for use with PVC pipe grouting as described in claim 1, characterized in that, The drill rig wire-lined 108 seamless steel casing head (3) is the component with the largest diameter in the entire device. The steel casing wall thickness is 4.5mm, the outer diameter is 108mm, and the wire-lined seamless steel casing head has a thread length of 60mm. Its overall diameter is consistent with the diameter of the grouting steel pipe.

3. The multifunctional grouting device for use with PVC pipe grouting as described in claim 1, characterized in that, The DN32 galvanized steel pipe (2) has an outer diameter of 42.4 mm, a wall thickness of 3.5 mm, and a length of 70 mm.

4. The multifunctional grouting device for use with PVC pipe grouting as described in claim 1, characterized in that, The DN40 galvanized steel pipe (1) with an outer diameter of 48.3 mm, a wall thickness of 3.5 mm, and a length of 500 mm is described.

5. A multifunctional grouting device for use with PVC pipe grouting as described in claim 1, characterized in that, The PVC32 water supply pipe copper internal thread connector (5) has an inner diameter of 32mm and a copper internal thread of 1 inch.

6. A multifunctional grouting device for use with PVC pipe grouting as described in claim 1, characterized in that, The PVC32 electrical conduit (7) has an outer diameter of 32mm and a wall thickness of 2.4mm. The PVC pipe within the height range corresponding to the grouting area needs to be manually drilled in advance.

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