Connecting device and method for metal instrument and non-metal pipeline

Abstract

The invention discloses a connecting device and method for a metal instrument and a non-metal pipeline, the connecting device comprises a connecting pipe with two open ends, one end of the connecting pipe is communicated with the non-metal pipeline through a connecting hole formed in the non-metal pipeline, the other end of the connecting pipe is fixedly connected with the metal instrument, and the outer surface of the non-metal pipeline is sleeved with a hoop; the hoop is provided with a round hole corresponding to the connecting pipe, and the connecting pipe penetrates through the hoop through the round hole and is fixedly connected with the hoop. The nonmetal pipeline and the metal instrument are connected through the connecting pipe, the hoop is arranged for fixing, the purpose of connecting the metal instrument and the nonmetal pipeline is achieved, manufacturing can be conducted according to the actual site situation in engineering, flexibility, reliability and construction convenience are good, and good sealing performance is achieved.

Description

Technical Field

[0001] The present invention belongs to the technical field of water supply and drainage equipment, and specifically relates to a connection device for a metal instrument and a non-metallic pipeline, and also relates to a connection method for a metal instrument and a non-metallic pipeline. Background Art

[0002] Metal instruments and non-metallic pipes are often used in water supply and drainage, power technology and other industries. At present, the connection between metal instruments and non-metallic pipes is mainly connected by metal transition sections, that is, the metal instrument is connected to the metal transition section by welding, threading or flange, and then the metal transition section is connected to the pipe. This method is not flexible and convenient to disassemble and install, and has poor sealing performance. Summary of the invention

[0003] The purpose of the present invention is to provide a connection device and method for metal instruments and non-metallic pipelines, so as to solve the problem that the metal instruments and non-metallic pipelines are connected by metal transition sections in the prior art, which are inconvenient to load and unload and have poor sealing.

[0004] The technical solution adopted by the present invention is a connecting device between a metal instrument and a non-metallic pipe, including a connecting pipe with openings at both ends, one end of the connecting pipe is connected to the non-metallic pipe through a connecting hole opened on the non-metallic pipe, and the other end is fixedly connected to the metal instrument. A clamp is provided on the outer surface of the non-metallic pipe, and a circular hole is opened on the clamp corresponding to the connecting pipe. The connecting pipe passes through the clamp through the circular hole and is fixedly connected to the clamp.

[0005] Furthermore, a waterproof sealing material is filled between the clamp and the non-metallic pipe.

[0006] Furthermore, the connecting pipe is a metal pipe, the connecting pipe and the clamp are welded, and the clamp is fastened to the non-metallic pipe with bolts.

[0007] Furthermore, a sealing bag is provided at the lower part of the above-mentioned connecting pipe, and the sealing bag is made of elastic rubber. The diameter of the connecting pipe is smaller than the diameter of the connecting hole. A groove is provided inwardly on the outer side of the lower part of the connecting pipe, and the sealing bag is folded in the groove. The top of the sealing bag is connected to a glue injection tube, and the glue injection tube is arranged upward along the inner wall of the connecting pipe and extends from the side wall of the connecting pipe to open a glue injection port. After the expansion material is filled into the sealing bag through the glue injection port, the sealing bag expands to form an annular sealing bag with convex top and bottom and concave middle part. The top and bottom of the annular sealing bag wrap the side wall of the non-metallic pipe around the connecting hole, and the concave middle part fills the gap between the connecting pipe and the non-metallic pipe.

[0008] Furthermore, at least two of the above-mentioned glue injection tubes are provided, and the two glue injection tubes are arranged oppositely on both sides of the connecting tube, and the glue injection port is provided with a sealing head.

[0009] Further, a fastener is provided between the above-mentioned sealing bladder and the hoop. The lower part of the connecting pipe is provided with an external thread above the groove. The fastener includes a fastening sleeve and a sealing ring. Through holes are correspondingly opened in the middle of the sealing ring and the fastening sleeve for the connecting pipe, and the fastener is sleeved on the connecting pipe through the through holes. The fastening sleeve is provided with an internal thread matching the external thread. The fastener is fixed to the lower part of the connecting pipe by screwing the fastening sleeve with the lower part of the connecting pipe. The bottom end surface of the sealing ring is in contact connection with the sealing bladder.

[0010] Further, the diameter of the above-mentioned sealing ring is larger than the diameter of the sealing bladder. The bottom end surface of the sealing ring is in contact with the non-metal pipe near the edge, and a sealing cavity is provided near the middle of the bottom end surface of the sealing ring corresponding to the top of the sealing bladder after expansion.

[0011] A method for using a connecting device for a metal material instrument and a non-metal pipe. The method is as follows: sleeved the fastener on the connecting pipe, initially rotate the fastening sleeve to thread-connect the fastener with the connecting pipe, and then insert the connecting pipe into the non-metal pipe through the connecting hole. At this time, the bottom end surface of the sealing ring is in contact with the non-metal pipe. Then inject the expansion material into the injection pipe through the injection port. The expansion material enters the sealing bladder along the injection pipe. As the expansion material is injected, the sealing bladder expands, pops out from the groove, and gradually expands outward while being filled with the expansion material. The top and bottom wrap the non-metal pipe, and the middle fills the gap between the connecting pipe and the non-metal pipe. After the expansion material filling is completed, cover the plug head, press down the fastener and further rotate the fastening sleeve to press the sealing ring against the sealing bladder, apply sealant at the connection between the sealing ring and the non-metal pipe, and finally install the hoop for fixation.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention connects the non-metal pipe and the metal instrument by using a connecting pipe and is fixed with a hoop, achieving the purpose of connecting the metal material instrument and the non-metal pipe. It can be made according to the actual situation on site in engineering, with good flexibility, reliability and construction convenience. Among them, in order to improve the connection tightness, a sealing bladder is arranged at the lower part of the connecting pipe. The gap between the connecting pipe and the non-metal pipe is filled by the sealing bladder, improving the connection reliability between the connecting pipe and the non-metal pipe, thereby improving the stability and accuracy of the detection instrument.

[0013] The connection method designed by the present invention has less rigid connection, saves effort, is convenient to operate and reduces the damage to the non-metal pipe. During the installation process, the sealing of the tube is controlled, and the tightness is ensured while the device is installed in place. Description of the Drawings

[0014] Figure 1 It is the front view of the connecting device; Figure 2 It is the side view of the connecting device; Figure 3 It is the front view of another embodiment of the connecting device; Figure 4 Schematic diagram of the structure of the connecting pipe; Figure 5 Top view of the fastener. Detailed implementation manners

[0015] The present invention will be further explained below in conjunction with the accompanying drawings of the specification, so as to be better understood by those skilled in the art.

[0016] Embodiment 1 As Figure 1-2 shown, a connecting device for a metal material instrument and a non-metal pipeline includes a connecting pipe 1 with openings at both ends. The connecting pipe 1 is made of a metal pipe. One end of the connecting pipe 1 communicates with the non-metal pipeline 2 through a connecting hole opened on the non-metal pipeline 2. The other end of the connecting pipe 1 is fixedly connected to a metal instrument 3. A hoop 4 is sleeved on the outer surface of the non-metal pipeline 2. A round hole is opened on the hoop 4 corresponding to the connecting pipe 1. The connecting pipe 1 passes through the hoop 4 through the round hole and is welded to the hoop 4. A waterproof sealing material is filled between the hoop 4 and the non-metal pipeline. The hoop 4 is fastened to the non-metal pipeline 2 by bolts, achieving the purpose of connecting the metal material instrument and the non-metal pipeline. It can be fabricated according to the actual on-site situation in engineering, with good flexibility, reliability, and construction convenience, and has good sealing performance.

[0017] Embodiment 2 As Figure 3-5 shown, the difference between this embodiment and Embodiment 1 is that a sealing bladder 5 is provided at the lower part of the above-mentioned connecting pipe 1. The sealing bladder 5 is made of elastic rubber and has certain elasticity and ductility. The diameter of the connecting pipe 1 is smaller than the diameter of the connecting hole. A groove 101 is provided on the outer side of the lower part of the connecting pipe 1 inward. The sealing bladder 5 is folded and stored in the groove 101. The top of the sealing bladder 5 is connected to a glue injection pipe 6. The glue injection pipe 6 is arranged upward along the inner wall of the connecting pipe 1 and then extends out from the side wall of the connecting pipe 1 to open a glue injection port 7. After filling the expansion material into the sealing bladder 5 through the glue injection port 7, the sealing bladder 5 expands to form an annular sealing bladder with the top and bottom protruding outward and the middle concave inward. The top and bottom of the annular sealing bladder wrap the side wall of the non-metal pipeline 2 around the connecting hole, and the middle concave part fills the gap between the connecting pipe 1 and the non-metal pipeline 2, effectively improving the sealing performance of the installation of the connecting pipe and preventing leakage.

[0018] In order to improve the injection efficiency of the expansion material, at least two of the above-mentioned glue injection pipes 6 are provided. The two glue injection pipes 6 are oppositely arranged on both sides of the connecting pipe 1. The glue injection port 7 is provided with a plug 8 to block the glue injection port and prevent foreign matters from entering.

[0019] Further, a fastener 9 is provided between the sealing bladder 5 and the hoop 4. An external thread 102 is provided above the groove 101 at the lower part of the connecting pipe 1. The fastener 9 includes a fastening sleeve 901 and a sealing ring 902. Through holes are correspondingly formed in the middle of the sealing ring 902 and the fastening sleeve 901 for the connecting pipe 1, and the fastener 9 is sleeved on the connecting pipe 1 through the through holes. The fastening sleeve 901 is provided with an internal thread matching the external thread 102. The fastener 9 is fixed to the lower part of the connecting pipe 1 by threadedly connecting the fastening sleeve 901 with the lower part of the connecting pipe 1. The bottom end surface of the sealing ring 902 is in contact connection with the sealing bladder 5. The diameter of the sealing ring 902 is larger than that of the sealing bladder 5. The bottom end surface of the sealing ring 902 is in contact with the non-metal pipe 2 near the edge, and a sealing cavity 903 is provided corresponding to the top of the sealing bladder 5 after expansion near the middle of the bottom end surface of 902. The fastener 9 is provided between the hoop 4 and the sealing bladder 5, and the sealing ring 902 covers the sealing bladder 5 in the sealing cavity 903. On the one hand, it has a protective effect on the sealing bladder 5. On the other hand, the sealing ring 902 presses the sealing bladder 5 tightly, so that the expansion material supports the sealing bladder to completely fill the gap, ensuring the sealing effect of the sealing bladder 5. In addition, the fastener is welded or bonded to the hoop 4 to increase the connection area and improve the connection reliability.

[0020] Embodiment 3 A method for using a connecting device between a metal instrument and a non-metal pipe, the method is as follows: sleeve the fastener 9 on the connecting pipe 1, initially rotate the fastening sleeve 901 to threadedly connect the fastener 9 with the connecting pipe 1, determine the position of the connecting pipe 1, and then insert the connecting pipe 1 into the non-metal pipe 2 through the connecting hole. At this time, the bottom end surface of the sealing ring 902 is in contact with the non-metal pipe 2. Then, inject the expansion material into the injection pipe 6 through the injection port 7. The expansion material enters the sealing bladder 5 along the injection pipe 6. As the expansion material is injected, the sealing bladder 5 expands and pops out from the groove 101. The sealing bladder 5 gradually fills with the expansion material and extends outwards. The top and bottom of the sealing bladder 5 wrap the non-metal pipe 2, and the middle fills the gap between the connecting pipe 1 and the non-metal pipe 2. After the expansion material is filled, cover the plug 8, press the fastener 9 downwards, and further rotate the fastening sleeve 901 to press the sealing ring 902 against the sealing bladder 5. The top of the sealing bladder 5 fills the sealing cavity 903, and the sealing bladder completely fills the gaps between the connecting pipe 1 and the non-metal pipe 2 and between the non-metal pipe 2 and the middle of the sealing ring 902. Apply a sealing adhesive at the connection between the sealing ring 902 and the non-metal pipe 2 to further improve the sealing performance, and finally install the hoop for fixation.

[0021] The present invention achieves the purpose of connecting a metal material instrument to a non-metal pipeline by using a connecting pipe to connect the non-metal pipeline and the metal instrument and equipping it with a fixing method using a hoop. It can be manufactured according to the actual situation on site in engineering, with good flexibility, reliability, and construction convenience. Among them, in order to improve the connection tightness, a sealing bladder is arranged at the lower part of the connecting pipe, and the gap between the connecting pipe and the non-metal pipe is filled through the sealing bladder, so as to improve the connection reliability between the connecting pipe and the non-metal pipeline, thereby improving the stability and accuracy of the detection instrument.

[0022] The embodiments described above are only descriptions of the preferred implementation manners of the present invention, and do not limit the scope of the present invention. Without departing from the spirit and principles of the design of the present invention, various deformations and improvements made by those skilled in the art to the technical solutions of the present invention shall fall within the protection scope determined by the claims of the present invention.

Claims

1. A connecting device for a metal material instrument and a non-metal pipeline, characterized in that, The invention comprises a connecting pipe (1) with openings at both ends, one end of the connecting pipe (1) being connected to the non-metallic pipe (2) through a connecting hole provided on the non-metallic pipe (2), and the other end being fixedly connected to a metal instrument (3), a clamp (4) being sleeved on the outer surface of the non-metallic pipe (2), a circular hole being provided on the clamp (4) corresponding to the connecting pipe (1), and the connecting pipe (1) passing through the clamp (4) through the circular hole and being fixedly connected to the clamp (4).

2. The connecting device for a metal material instrument and a non-metal pipeline according to claim 1, characterized in that, A waterproof sealing material is filled between the clamp (4) and the non-metallic pipe (2).

3. A connecting device for a metal material instrument and a non-metal pipeline according to claim 1, characterized in that, The connecting pipe (1) is a metal pipe, the connecting pipe (1) and the clamp (4) are welded, and the clamp (4) is installed on the non-metallic pipe (2) by bolts.

4. A connecting device for a metal material instrument and a non-metal pipeline according to claim 1, characterized in that, A sealing bag (5) is provided at the lower part of the connecting pipe (1). The sealing bag (5) is made of elastic rubber. The diameter of the connecting pipe (1) is smaller than the diameter of the connecting hole. A groove (101) is provided inwardly on the outer side of the lower part of the connecting pipe (1). The sealing bag (5) is folded in the groove (101). The top of the sealing bag (5) is connected to a glue injection tube (6). The glue injection tube (6) is arranged upward along the inner wall of the connecting pipe (1) and extends from the side wall of the connecting pipe (1) to form a glue injection port (7). After the expansion material is filled into the sealing bag (5) through the glue injection port (7), the sealing bag (5) expands to form an annular sealing bag with a convex top and bottom and an inward concave middle. The top and bottom of the annular sealing bag wrap the side wall of the non-metallic pipe (2) around the connecting hole, and the inward concave middle fills the gap between the connecting pipe (1) and the non-metallic pipe (2).

5. The connecting device for a metal material instrument and a non-metal pipeline according to claim 4, characterized in that, At least two of the glue injection pipes (6) are provided, and the two glue injection pipes (6) are arranged oppositely on both sides of the connecting pipe (1), and the glue injection port (7) is provided with a sealing head (8).

6. The connecting device for a metal material instrument and a non-metal pipeline according to claim 4, characterized in that, A fastener (9) is provided between the sealing bag (5) and the clamp (4); an external thread (102) is provided at the lower portion of the connecting pipe (1) above the groove (101); the fastener (9) comprises a fastening sleeve (901) and a sealing ring (902); through holes are provided in the middle of the sealing ring (902) and the fastening sleeve (901) corresponding to the connecting pipe (1) and the fastening sleeve is sleeved on the connecting pipe (1) through the through holes; the fastening sleeve (901) is provided with an internal thread matching the external thread (102); the fastening sleeve (901) is threadedly connected to the lower portion of the connecting pipe (1) to fix the fastener (9) to the lower portion of the connecting pipe (1); and the bottom end surface of the sealing ring (902) is in contact connection with the sealing bag (5).

7. The connecting device for a metal material instrument and a non-metal pipeline according to claim 6, characterized in that, The diameter of the sealing ring (902) is greater than the diameter of the sealing bag (5); the bottom end surface of the sealing ring (902) contacts the non-metallic pipe (2) near the edge; and a sealing cavity (903) is provided at the bottom end surface of the sealing ring (902) near the middle corresponding to the top of the expanded sealing bag (5).

8. The usage method of a connecting device for a metal material instrument and a non-metal pipeline according to any one of claims 1-7, characterized in that, The method is as follows: sleeving the fastener on the connecting pipe, initially rotating the fastening sleeve to thread-connect the fastener with the connecting pipe, then inserting the connecting pipe into the non-metallic pipe through the connecting hole. At this time, the bottom end face of the sealing ring contacts the non-metallic pipe. Then, inject the expansion material into the injection pipe through the injection port. The expansion material enters the sealing bladder along the injection pipe. As the expansion material is injected, the sealing bladder expands, pops out from the groove, and gradually fills with the expansion material and expands outwards. The top and bottom form a wrap around the non-metallic pipe, and the middle fills the gap between the connecting pipe and the non-metallic pipe. After the expansion material filling is completed, cover the plug, press down the fastener and further rotate the fastening sleeve to make the sealing ring press the sealing bladder. Apply sealant at the connection between the sealing ring and the non-metallic pipe, and finally install the hoop for fixation.

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