A double-layer grouting conduit

Abstract

The present invention discloses a double-layer grouting conduit, comprising a first grouting conduit and a second grouting conduit, wherein an outer sleeve is welded to the outer surface of the first grouting conduit and the second grouting conduit, and grouting holes are provided on the first grouting conduit and the second grouting conduit, and fourth connecting threads are provided at both ends of the first grouting conduit and the second grouting conduit, and the second grouting conduit is connected to the first grouting conduit through a connecting joint, and the connecting joint is connected to the fourth connecting thread, and a connecting fastener is sleeved on the outside of the connecting joint, and a first support frame is welded inside one end of the first grouting conduit and the second grouting conduit, and a conduit plug is welded in the middle of the first support frame. The double-layer grouting conduit described in the present invention has good connectivity, prevents the connector from breaking and the thread ring from rotating in reverse, and enhances the strength between concrete and holes.

Description

Technical Field

[0001] The invention relates to the field of grouting conduits, in particular to a double-layer grouting conduit. Background Art

[0002] Grouting conduit is a pre-buried grouting conduit system, which is used for permanent sealing of construction joints, cold joints, pipe seepage joints, gaps between ground and walls in concrete. It is very appropriate to install grouting conduits between the joints of new and old concrete. When water penetrates into the joints, slurry can be injected through the port set on the surface to seal it. This method can seal the joints. The appropriate grouting time can be selected after the concrete curing is completed. Leaking joints can also be made into permanent seals by this method. However, the existing grouting conduits are not firmly connected when connected, and there is leakage in the connection, so that a small amount of concrete flows out from the interface after pouring concrete, resulting in a decrease in the conveying power during transportation. When pouring obliquely from above, the mud will flow back from the conduit, making it difficult to convey concrete, and even the upper grouting pipe cannot convey cement. Some pipes need to be buried in holes to form a permanent seal, and at this time, the pipes cannot be well integrated with concrete and holes. Summary of the invention

[0003] The main purpose of the present invention is to provide a double-layer grouting conduit, which can effectively solve the problems in the background technology.

[0004] To achieve the above object, the technical solution adopted by the present invention is:

[0005] A double-layer grouting conduit comprises a first grouting conduit and a second grouting conduit, wherein an outer sleeve is welded to the outer surface of the first grouting conduit and the second grouting conduit, and grouting holes are provided on the first grouting conduit and the second grouting conduit, fourth connecting threads are provided at both ends of the first grouting conduit and the second grouting conduit, the second grouting conduit is connected to the first grouting conduit through a connecting joint, and the connecting joint is connected to the fourth connecting thread, a connecting fastener is sleeved on the outside of the connecting joint, a first support frame is welded to the inside of one end of the first grouting conduit and the second grouting conduit, and a conduit plug is welded in the middle of the first support frame.

[0006] Preferably, the connecting joint includes a first connecting thread, a first connecting piece, a matching inner tube, a sealing gasket, a threaded ring, a conical surface, a tightening groove, a sealing groove, a second connecting thread, a second connecting piece and a third connecting thread. The first connecting piece is fixed to the first grouting conduit via the first connecting thread, and the second connecting piece is connected to the second grouting conduit via the third connecting thread. The first connecting piece has a matching inner tube, and a sealing groove and a second connecting thread are provided on the surface of the second connecting piece. A sealing gasket is provided on the sealing groove. A threaded ring is installed on the second connecting thread through connection, and the threaded ring moves along the second connecting thread. The connecting fastener is clamped on the threaded ring. The upper end of the second connecting piece has a conical surface, and a tightening groove is provided on the conical surface. The matching inner tube matches the interior of the second connecting piece.

[0007] Preferably, the connecting fastener includes a hinge, a first fixed half ring, a first sealing half ring, a second sealing half ring, a second fixed half ring and a fixing bolt, the first fixed half ring is connected to the second fixed half ring by a hinge, and the first fixed half ring is fixed to the second fixed half ring by a fixing bolt, the inner surfaces of the first fixed half ring and the second fixed half ring are respectively provided with a first sealing half ring and a second sealing half ring, and the first sealing half ring and the second sealing half ring are in contact with the connecting joint.

[0008] Preferably, the catheter plug includes a metal sac, a first telescopic spring, a feed port, a limit plate, a first middle hole, a discharge port, compressed gas, a fixed block, a connecting rod, a conical plug, a second middle hole, a spherical plug and a second telescopic spring. A metal sac is arranged above the interior of the fixed block, and the interior of the metal sac is filled with compressed gas. A connecting rod is arranged below the metal sac inside the fixed block, and a limit plate and a conical plug are arranged on the connecting rod. The first telescopic spring is arranged on the connecting rod, and the conical plug is in contact with the second middle hole. A second telescopic spring is arranged below the fixed block, and a spherical plug is arranged at one end of the second telescopic spring, and the spherical plug is in contact with the first middle hole. The fixed block has a feed port and a discharge port on the upper and lower sides of the first support frame.

[0009] Preferably, the outer sleeve includes side plates, second support frames, fixing holes and connecting columns. Three second support frames are welded on the first grouting conduit and the second grouting conduit. The second support frames are evenly distributed. Side plates are welded on the second support frames. Fixing holes are opened on the side plates, and connecting columns are arranged inside the fixing holes.

[0010] Preferably, the first grouting conduit and the second grouting conduit are located in the hole, and concrete is injected into the first grouting conduit and the second grouting conduit.

[0011] Preferably, both ends of the connecting joint are connected to the fourth connecting thread.

[0012] Compared with the prior art, the present invention has the following beneficial effects: the double-layer grouting conduit can reliably connect each grouting pipe through the additional connecting joint, has good connectivity, and prevents the connection head from breaking under the heavy pressure of concrete;

[0013] The use of connecting fasteners can not only further fix the connection joints, but also seal the connection gaps, which can prevent the threaded rings from rotating in the opposite direction, and is more suitable;

[0014] By providing a conduit plug, the injected mud can be prevented from flowing back, and the injection can be carried out under a larger injection pressure, and the injection can be carried out under a smaller injection pressure, thereby ensuring the adhesion between the internal concrete.

[0015] The outer sleeve can be effectively bonded to the concrete, thereby enhancing the strength between the concrete and the holes. The effect is better than that of the traditional method. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of a double-layer grouting conduit of the present invention;

[0017] Figure 2 This is a schematic diagram of a connecting joint structure of a double-layer grouting conduit of the present invention;

[0018] Figure 3 This is a schematic diagram of a connecting fastener of a double-layer grouting conduit of the present invention;

[0019] Figure 4 It is a schematic diagram of the interior of a conduit plug of a double-layer grouting conduit of the present invention;

[0020] Figure 5 It is a schematic diagram of an outer sleeve of a double-layer grouting conduit of the present invention;

[0021] Figure 6 The present invention is a cross-sectional view of an outer sleeve of a double-layer grouting conduit.

[0022] In the figure: 1, first grouting conduit; 2, connecting joint; 201, first connecting thread; 202, first connecting piece; 203, matching inner tube; 204, sealing gasket; 205, threaded ring; 206, tapered surface; 207, tension groove; 208, sealing groove; 209, second connecting thread; 210, second connecting piece; 211, third connecting thread; 3, connecting fastener; 301, hinge; 302, first fixing half ring; 303, first sealing half ring; 304, second sealing half ring; 305, second fixing half ring; 306, fixing bolt; 4, second Grouting catheter; 5. fourth connecting thread; 6. first support frame; 7. catheter plug; 701. metal soft bag; 702. first telescopic spring; 703. feed port; 704. limit plate; 705. first middle hole; 706. discharge port; 707. compressed gas; 708. fixing block; 709. connecting rod; 710. conical plug; 711. second middle hole; 712. spherical plug; 713. second telescopic spring; 8. outer sleeve; 801. side plate; 802. second support frame; 803. fixing hole; 804. connecting column; 9. grouting hole. DETAILED DESCRIPTION

[0023] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0024] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply 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 limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0025] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" 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 indirectly connected 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.

[0026] like Figure 1-6As shown, a double-layer grouting conduit comprises a first grouting conduit 1 and a second grouting conduit 4, outer surfaces of the first grouting conduit 1 and the second grouting conduit 4 are welded with an outer sleeve 8, and grouting holes 9 are provided on the first grouting conduit 1 and the second grouting conduit 4, fourth connecting threads 5 are provided at both ends of the first grouting conduit 1 and the second grouting conduit 4, the second grouting conduit 4 is connected to the first grouting conduit 1 through a connecting joint 2, and the connecting joint 2 is connected to the fourth connecting thread 5, a connecting fastener 3 is sleeved on the outside of the connecting joint 2, first support frames 6 are welded inside one end of the first grouting conduit 1 and the second grouting conduit 4, and a conduit plug 7 is welded in the middle of the first support frame 6;

[0027] The connecting joint 2 includes a first connecting thread 201, a first connecting member 202, a matching inner tube 203, a sealing gasket 204, a threaded ring 205, a conical surface 206, a tension groove 207, a sealing groove 208, a second connecting thread 209, a second connecting member 210 and a third connecting thread 211. The first connecting member 202 is fixed to the first grouting conduit 1 through the first connecting thread 201, and the second connecting member 210 is connected to the second grouting conduit 4 through the third connecting thread 211. The first connecting member 202 has a matching inner tube 203, and the surface of the second connecting member 210 is provided with a sealing groove 208 and a second connecting thread 209, and a sealing gasket is provided on the sealing groove 208. 204, a threaded ring 205 is installed on the second connecting thread 209 through connection, the threaded ring 205 moves along the second connecting thread 209, the connecting fastener 3 is clamped on the threaded ring 205, the upper end of the second connecting member 210 has a conical surface 206, and a tightening groove 207 is opened on the conical surface 206, which cooperates with the inner tube 203 and the inside of the second connecting member 210; the connecting fastener 3 includes a hinge 301, a first fixed semi-ring 302, a first sealing semi-ring 303, a second sealing semi-ring 304, a second fixed semi-ring 305 and a fixing bolt 306, the first fixed semi-ring 302 is connected to the second fixed semi-ring 305 through the hinge 301, and the first fixed semi-ring 302 The first fixing half ring 302 and the second fixing half ring 305 are fixed by fixing bolts 306, and the inner surfaces of the first fixing half ring 302 and the second fixing half ring 305 are respectively provided with the first sealing half ring 303 and the second sealing half ring 304, and the first sealing half ring 303 and the second sealing half ring 304 are fitted with the connecting joint 2; the catheter plug 7 includes a metal soft bag 701, a first telescopic spring 702, a feed port 703, a limit plate 704, a first middle hole 705, a discharge port 706, compressed gas 707, a fixing block 708, a connecting rod 709, a conical plug 710, a second middle hole 711, a spherical plug 712 and a second telescopic spring 713, and the upper part of the fixing block 708 is provided with A metal soft capsule 701 is provided, and the interior of the metal soft capsule 701 is filled with compressed gas 707. A connecting rod 709 is provided inside a fixed block 708 below the metal soft capsule 701. A limit plate 704 and a conical plug 710 are provided on the connecting rod 709. A first telescopic spring 702 is provided on the connecting rod 709. The conical plug 710 is in contact with a second middle hole 711. A second telescopic spring 713 is provided below the fixed block 708. A spherical plug 712 is provided at one end of the second telescopic spring 713. The spherical plug 712 is in contact with the first middle hole 705. A feed port 703 and a discharge port 706 are provided on the upper and lower sides of the first support frame 6 on the fixed block 708.The outer sleeve 8 includes a side plate 801, a second support frame 802, a fixing hole 803 and a connecting column 804. Three second support frames 802 are welded on the first grouting conduit 1 and the second grouting conduit 4. The second support frames 802 are evenly distributed. The side plates 801 are welded on the second support frames 802. The side plates 801 are provided with fixing holes 803. The fixing holes 803 are provided with connecting columns 804 inside. The first grouting conduit 1 and the second grouting conduit 4 are located in the hole. Concrete is injected into the first grouting conduit 1 and the second grouting conduit 4. Both ends of the connecting joint 2 are connected to the fourth connecting thread 5. ;

[0028] It should be noted that the present invention is a double-layer grouting conduit. When making the grouting conduit, a first support frame 6 is welded inside a hole at one end of the grouting conduit, and then the conduit plug 7 is welded to the first support frame 6, and it is ensured that the feed port 703 and the discharge port 706 are respectively located on both sides of the first support frame 6. When some cracks or holes need to be reinforced by pouring concrete, holes are drilled in advance at the places where pouring is required or holes are reserved in advance, and then the grouting conduit is connected and extended into the reserved holes, specifically, the fourth connecting thread 5 of the first grouting conduit 1 is connected to the first connecting thread 201 of the connecting joint 2, and then the fourth connecting thread 5 on the second grouting conduit 4 is connected to the third connecting thread 211. The tightening groove 207 is compressed in advance, the threaded ring 205 is inserted into the first connecting piece 202, and then the sealing gasket 204 is put into the sealing groove 208, and the sealing groove 208 is sealed by the sealing gasket 204, and the matching inner tube 203 on the first connecting piece 202 is inserted into the second connecting piece 210, and then the threaded ring 205 on the second connecting thread 209 is rotated to make the second connecting thread 209 move toward the second connecting piece 210, and the sealing gasket 204 is clamped in the sealing groove 208, and then moved forward until it contacts the conical surface 206. Since the tightening groove 207 is opened on the conical surface 206, the tightening groove 207 is contracted to clamp the matching inner tube 203, and at this time, the first fixing member 3 of the connecting fastener is connected. The half ring 302 and the second fixed half ring 305 rotate around the hinge 301, and then the connecting fastener 3 is clamped in the position just before the threaded ring 205 moves. At this time, the first sealing half ring 303 and the second sealing half ring 304 are fitted with the connecting joint 2, and then the first fixed half ring 302 and the second fixed half ring 305 are fixed to each other by the fixing bolts 306. At this time, the connecting fastener 3 can not only reduce the possibility of leakage, but also prevent the threaded ring 205 from loosening. Then, the connected grouting conduit is extended into the reserved hole, and the outermost grouting conduit is connected to the pouring machine. The prepared concrete is injected into the grouting conduit from the injection machine. When the concrete is transported to the grouting conduit, since one end of the grouting conduit has a conduit plug 7, the concrete is Concrete is introduced into the feed port 703. Since the conical plug 710 blocks the second middle hole 711, the internal pressure will increase during the continued injection, causing the concrete to squeeze the compressed gas 707 inside the metal bladder 701, causing the metal bladder 701 to expand and contract. The connecting rod 709 on the metal bladder 701 moves until it is separated from the second middle hole 711. At this time, the concrete flows from the second middle hole 711 to the first middle hole 705. Since the pressure inside the fixed block 708 is greater than the elastic force of the second telescopic spring 713, the spherical plug 712 is pushed open and the concrete is discharged from the discharge port 706. Since the concrete is continuously transported to the first grouting conduit 1 and the second grouting conduit 4, it can be prevented from condensing in the conduit plug 7.When the injection pressure is insufficient, the elastic force of the first telescopic spring 702 causes the second middle hole 711 to contact the conical plug 710. Under the action of the second telescopic spring 713, the spherical plug 712 contacts the first middle hole 705 to prevent the concrete in the pipeline from backflowing. At the same time, the concrete introduced into the grouting conduit flows out of the grouting hole 9 and then flows to the outside of the pipeline. When the concrete fills the hole or the reserved hole, it merges with the outer sleeve 8. Since three second support frames 802 are welded on the first grouting conduit 1 and the second grouting conduit 4, the second support frames 802 are evenly distributed, and the concrete is bonded to the side plate 801 and the connecting column 804 in the fixing hole 803 to ensure the reliability of the connection. There is no need to pull out the grouting conduit, and permanent sealing can be achieved.

[0029] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A double-layer grouting conduit, characterized in that: The invention comprises a first grouting conduit (1) and a second grouting conduit (4), wherein an outer sleeve (8) is welded to the outer surface of the first grouting conduit (1) and the second grouting conduit (4), and a grouting hole (9) is provided on the first grouting conduit (1) and the second grouting conduit (4), and fourth connecting threads (5) are provided at both ends of the first grouting conduit (1) and the second grouting conduit (4), and the second grouting conduit (4) is connected to the first grouting conduit (1) via a connecting joint (2), and a connecting fastener (3) is sleeved on the outside of the connecting joint (2), and a first support frame (6) is welded to the inside of one end of the first grouting conduit (1) and the second grouting conduit (4), and a conduit plug (7) is welded in the middle of the first support frame (6); The connecting joint (2) comprises a first connecting thread (201), a first connecting piece (202), a matching inner tube (203), a sealing gasket (204), a threaded ring (205), a conical surface (206), a tightening groove (207), a sealing groove (208), a second connecting thread (209), a second connecting piece (210) and a third connecting thread (211); the first connecting piece (202) is fixed to the first grouting conduit (1) via the first connecting thread (201); the second connecting piece (210) is connected to the second grouting conduit (4) via the third connecting thread (211); the first connecting piece (202) has a matching inner tube (2 03), a sealing groove (208) and a second connecting thread (209) are provided on the surface of the second connecting member (210), a sealing gasket (204) is provided on the sealing groove (208), a thread ring (205) is installed on the second connecting thread (209) by connection, the thread ring (205) moves along the second connecting thread (209), the connecting fastener (3) is clamped on the thread ring (205), the upper end of the second connecting member (210) has a conical surface (206), a tightening groove (207) is provided on the conical surface (206), and the matching inner tube (203) matches with the inside of the second connecting member (210); The catheter plug (7) comprises a metal sac (701), a first telescopic spring (702), a feed port (703), a limit plate (704), a first middle hole (705), a discharge port (706), compressed gas (707), a fixed block (708), a connecting rod (709), a conical plug (710), a second middle hole (711), a spherical plug (712) and a second telescopic spring (713), wherein a metal sac (701) is arranged above the interior of the fixed block (708), the interior of the metal sac (701) is filled with compressed gas (707), and the interior of the fixed block (708) is arranged below the metal sac (701). There is a connecting rod (709), on which a limiting plate (704) and a conical plug (710) are arranged, on which a first telescopic spring (702) is arranged, and the conical plug (710) is in contact with the second middle hole (711), and a second telescopic spring (713) is arranged below the fixed block (708), and a spherical plug (712) is arranged at one end of the second telescopic spring (713), and the spherical plug (712) is in contact with the first middle hole (705), and the fixed block (708) is provided with a feed port (703) and a discharge port (706) on the upper and lower sides of the first support frame (6).

2. A double-layer grouting conduit according to claim 1, characterized in that: The connecting fastener (3) comprises a hinge (301), a first fixing half ring (302), a first sealing half ring (303), a second sealing half ring (304), a second fixing half ring (305) and a fixing bolt (306); the first fixing half ring (302) is connected to the second fixing half ring (305) via the hinge (301), and the first fixing half ring (302) is fixed to the second fixing half ring (305) via the fixing bolt (306); the inner surfaces of the first fixing half ring (302) and the second fixing half ring (305) are respectively provided with a first sealing half ring (303) and a second sealing half ring (304); the first sealing half ring (303) and the second sealing half ring (304) are in contact with the connecting joint (2).

3. A double-layer grouting conduit according to claim 1, characterized in that: The outer sleeve (8) comprises side plates (801), second support frames (802), fixing holes (803) and connecting columns (804); three second support frames (802) are welded on the first grouting conduit (1) and the second grouting conduit (4); the second support frames (802) are evenly distributed; side plates (801) are welded on the second support frames (802); fixing holes (803) are provided on the side plates (801); and connecting columns (804) are arranged inside the fixing holes (803).

4. A double-layer grouting conduit according to claim 1, characterized in that: The first grouting conduit (1) and the second grouting conduit (4) are located in the hole, and concrete is injected into the first grouting conduit (1) and the second grouting conduit (4).

5. A double-layer grouting conduit according to claim 1, characterized in that: Both ends of the connecting joint (2) are connected to the fourth connecting thread (5).

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