A two-way pipe joint with a reducing diameter

Abstract

The present invention discloses a two-way pipe joint with a reducing diameter, comprising a joint body, the front end of the joint body being movably connected to a thick-diameter pipe, the rear end of the joint body being movably connected to a thin-diameter pipe, the middle part of the joint body being fixedly connected to a fixed support mechanism, the fixed support mechanism comprising a fixing ring, the lower end of the fixing ring being fixedly connected to a column, the lower end of the column being fixedly connected to a fixing plate, a connecting arm being arranged on the side of the fixing ring, and a pressing plate being fixedly connected to the front end of the connecting arm. The two-way pipe joint with a reducing diameter described in the present invention can keep the position of the thin-diameter pipe unchanged, and can conveniently fix the thin-diameter pipe at the rear end of the joint body, and after the connection is completed, can always support the joint body and the thick-diameter pipe and the thin-diameter pipe at both ends, so that the force applied to the joint body is shared, thereby preventing the joint body from being loosened due to a large pressure.

Description

Technical Field

[0001] The invention relates to the technical field of pipeline joints, in particular to a two-way pipe joint with a reducing diameter. Background Art

[0002] Pipe fittings are connecting tools between pipes and are detachable connection points between components and pipes. Pipe fittings are used for linear connections such as instruments, and the connection forms include socket welding or threaded connection. They are mainly used for small-diameter low-pressure pipelines, for parts that need to be frequently installed and disassembled, or for the final adjustment of pipelines using threaded pipe fittings. The structural form should adopt a metal surface contact sealing structure. The gasket sealing structure is usually used in general pipelines such as water, oil, and air. The reducer two-way pipe fitting is mainly used for the docking of two pipes with different diameters. The existing reducer two-way pipe fittings are often used when the two sets of pipes are at different heights. Forcing them to the same height requires freeing up hands to support them for docking operations. Single-handed docking is time-consuming, labor-intensive, and troublesome. In addition, forced docking of pipes at different heights will continuously cause pressure on the joints, which can easily cause the joints to loosen. In order to solve the above problems, we propose a reducer two-way pipe fitting. Summary of the invention

[0003] The main purpose of the present invention is to provide a two-way pipe joint with a reducing diameter, 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] The cam is connected with the linking rod at the bottom end of the support frame, and the cam is connected with the support frame by the support frame of the support frame, and the support frame, when the cam is closed, the support frame is closed by the support frame, and the support frame is closed by the support frame.

[0006] Preferably, a fixed shaft is provided between the middle portion of the connecting arm and the fixing ring, the connecting arm is rotatably connected to the fixing ring via the fixed shaft, and two groups of connecting arms are provided, and the two groups of connecting arms are symmetrically arranged on both sides of the fixing ring.

[0007] Preferably, the pressing plate is an arc-shaped structure, the internal dimensions of the pressing plate are adapted to the external dimensions of the front end of the joint body, the upper end of the pipe support is an arc-shaped structure, the upper end dimensions of the pipe support are adapted to the external dimensions of the thin-diameter pipe.

[0008] Preferably, the lower end of the fixed seat is fixedly connected to the upper front end of the joint body, a fixed shaft is provided inside the fixed seat, the rear end of the pin rod is rotatably connected to the fixed seat through the fixed shaft, the fixed seat and the clamping seat are both concave structures, and the front end of the pin rod is clamped with the inside of the clamping seat.

[0009] Preferably, both ends of the tube support are fixedly connected to the rear end of the connecting arm, the ear piece is an inverted concave structure, the connecting shaft passes through the upper end of the threaded support rod, and the connecting shaft is rotatably connected to the upper end of the threaded support rod.

[0010] Preferably, fixing bolts are provided at both ends of the fixing plate.

[0011] Preferably, one end of the large-diameter pipe and the one end of the small-diameter pipe are both provided with a threaded structure, and one end of the large-diameter pipe and the one end of the small-diameter pipe are threadedly connected with two ends of the joint body through the threaded structure.

[0012] Preferably, a sealing device is provided at the connection between the joint body and the thick-diameter pipe, and the sealing device includes a polyethylene layer, a metal mesh, a rubber tube, a gasket and a self-tapping screw. The polyethylene layer is formed by coating melted polyethylene on the surface of the thick-diameter pipe, and the metal mesh is located inside the polyethylene layer. A rubber tube is sleeved on the outer surface of the polyethylene layer, and the rubber tube is fixedly connected to the joint body near the end of the joint body. A gasket is provided on the outer surface of the rubber tube, and a through hole is opened in the gasket. Both ends of the inner side of the gasket are provided with convex shapes, and the self-tapping screws pass through the gasket, the rubber tube and the metal mesh in sequence and are fixed inside the polyethylene layer.

[0013] Preferably, the metal mesh is an annular structure, and the thickness of the metal mesh is lower than that of the polyethylene layer.

[0014] Preferably, the cross section of the gasket is in the shape of an arc opening outward.

[0015] Compared with the prior art, the present invention has the following beneficial effects: the reducer two-way pipe joint spirally fixes the front end of the joint body to the thick-diameter pipe, and the joint body can be fixed to the ground through the fixing plate and the column. The pressing plate can be pressed downward through the rotation connection between the connecting arm and the side of the fixing ring, so that the lower end of the pressing plate fits on the upper side of the front end of the joint body. Under the action of the lever principle, the rear end of the connecting arm can be pushed upward, so that the pipe support can be pushed against the lower end of the thin-diameter pipe, so that the front end of the thin-diameter pipe is flush with the rear end of the joint body. The upper end of the threaded support rod can be rotated downward inside the ear piece through the connecting shaft to connect the threaded support rod with the thin-diameter pipe. The pipeline is vertical, and the threaded support rod is adjusted to make the chassis contact the ground, so that the position of the thin-diameter pipeline can be fixed. Through the rotation connection between the fixing seat and the rear end of the pin rod, the pin rod can be rotated so that the front end of the pin rod is inserted into the inside of the clamping seat. The clamping seat is fixedly connected to the pressing plate, so that the pressing plate and the connecting arm can be fixed in the current position, so that the position of the thin-diameter pipeline will not change. The thin-diameter pipeline can be conveniently fixed to the rear end of the joint body, and after the connection is completed, the joint body and the thick-diameter pipeline and thin-diameter pipeline at both ends can be supported all the time, so that the force on the joint body is shared, thereby avoiding the joint body from being loosened due to large pressure, which is more practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of a two-way pipe joint with a reducing diameter according to the present invention;

[0017] Figure 2 It is an overall cross-sectional schematic diagram of a reducing two-way pipe joint of the present invention;

[0018] Figure 3 It is a structural schematic diagram of a fixed support mechanism of a reducing two-way pipe joint of the present invention;

[0019] Figure 4 It is a structural schematic diagram of a supporting mechanism of a reducing two-way pipe joint of the present invention;

[0020] Figure 5 The present invention is a schematic overall cross-sectional view of a sealing device for a two-way reducing pipe joint.

[0021] In the figure: 1. joint body; 2. large-diameter pipe; 3. small-diameter pipe; 4. fixed support mechanism; 41. fixed ring; 42. column; 43. fixed plate; 44. fixed seat; 45. pin rod; 46. holder; 47. connecting arm; 48. pressing plate; 49. supporting mechanism; 491. pipe support; 492. ear piece; 493. connecting shaft; 494. threaded support rod; 495. chassis; 51. polyethylene layer; 52. rubber tube; 53. gasket; 54. raised shape; 55. self-tapping screw. DETAILED DESCRIPTION

[0022] 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.

[0023] like Figure 1-5 As shown, a two-way pipe joint with a variable diameter includes a joint body 1, a front end of the joint body 1 is movably connected to a thick-diameter pipe 2, a rear end of the joint body 1 is movably connected to a thin-diameter pipe 3, a middle part of the joint body 1 is fixedly connected to a fixed support mechanism 4, the fixed support mechanism 4 includes a fixed ring 41, a lower end of the fixed ring 41 is fixedly connected to a column 42, a lower end of the column 42 is fixedly connected to a fixed plate 43, a side of the fixed ring 41 is provided with a connecting arm 47, a front end of the connecting arm 47 is fixedly connected to a pressing plate 48, and a pressing plate 48 is fixedly connected to the fixing plate 43. The upper end of the pressure plate 48 is fixedly connected to a holder 46, the interior of the holder 46 is movably connected to a pin rod 45, the rear end of the pin rod 45 is movably connected to a fixed seat 44, the rear end of the connecting arm 47 is fixedly connected to a supporting mechanism 49, the supporting mechanism 49 includes a pipe support 491, the lower end of the pipe support 491 is fixedly connected to an ear piece 492, the interior of the ear piece 492 is penetrated by a connecting shaft 493, the middle part of the connecting shaft 493 is movably connected to a threaded support rod 494, and the bottom end of the threaded support rod 494 is fixedly connected to a chassis 495.

[0024] One end of the large diameter pipe 2 and the small diameter pipe 3 are both provided with a thread structure, and one end of the large diameter pipe 2 and the small diameter pipe 3 are threadedly connected with two ends of the joint body 1 through the thread structure.

[0025] In this embodiment, Figure 2-4 As shown, a fixed shaft is arranged between the middle of the connecting arm 47 and the fixing ring 41 , and the connecting arm 47 is rotatably connected to the fixing ring 41 via the fixed shaft. There are two groups of connecting arms 47 symmetrically arranged on both sides of the fixing ring 41 .

[0026] The pressing plate 48 is an arc-shaped structure, and the internal dimensions of the pressing plate 48 are adapted to the external dimensions of the front end of the joint body 1 . The upper end of the pipe support 491 is an arc-shaped structure, and the upper end dimensions of the pipe support 491 are adapted to the external dimensions of the thin-diameter pipe 3 .

[0027] The lower end of the fixed seat 44 is fixedly connected to the upper front end of the joint body 1, and a fixed shaft is provided inside the fixed seat 44. The rear end of the pin rod 45 is rotatably connected to the fixed seat 44 through the fixed shaft. The fixed seat 44 and the clamping seat 46 are both concave structures, and the front end of the pin rod 45 is clamped with the inside of the clamping seat 46.

[0028] Both ends of the tube support 491 are fixedly connected to the rear end of the connecting arm 47 , the ear piece 492 is an inverted concave structure, the connecting shaft 493 passes through the upper end of the threaded support rod 494 , and the connecting shaft 493 is rotatably connected to the upper end of the threaded support rod 494 .

[0029] Both ends of the fixing plate 43 are provided with fixing bolts.

[0030] Specifically, the joint body 1 can be fixed on the ground through the fixing plate 43 and the column 42, and the pressing plate 48 can be pressed downward by the rotation connection between the connecting arm 47 and the side of the fixing ring 41, so that the lower end of the pressing plate 48 fits the upper side of the front end of the joint body 1. Under the action of the lever principle, the rear end of the connecting arm 47 can be pushed upward, so that the pipe support 491 can be pushed against the lower end of the small-diameter pipe 3, so that the front end of the small-diameter pipe 3 is flush with the rear end of the joint body 1, and the upper end of the threaded support rod 494 can be rotated downward inside the ear piece 492 through the connecting shaft 493, so that the threaded support rod 494 is perpendicular to the small-diameter pipe 3, and the threaded support rod 494 is adjusted to make the chassis 495 By contacting the ground, the position of the thin-diameter pipe 3 can be fixed. Through the rotational connection between the fixing seat 44 and the rear end of the pin rod 45, the pin rod 45 can be rotated so that the front end of the pin rod 45 is inserted into the inside of the clamping seat 46. Through the fixed connection between the clamping seat 46 and the pressing plate 48, the pressing plate 48 and the connecting arm 47 can be fixed at the current position, so that the position of the thin-diameter pipe 3 will not change, and the thin-diameter pipe 3 can be conveniently fixed to the rear end of the joint body 1. After the connection is completed, the joint body 1 and the thick-diameter pipe 2 and the thin-diameter pipe 3 at both ends can be supported all the time, so that the force applied to the joint body 1 is shared, thereby preventing the joint body 1 from being loosened due to a large pressure.

[0031] Specifically, a sealing device is provided at the connection between the joint body 1 and the thick-diameter pipe 2, and the sealing device includes a polyethylene layer 51, a metal mesh, a rubber tube 52, a gasket 53 and a self-tapping screw 55. The polyethylene layer 51 is formed by coating the surface of the thick-diameter pipe 2 with melted polyethylene, and the metal mesh is located inside the polyethylene layer 51. The metal mesh is an annular structure, and the thickness of the metal mesh is lower than that of the polyethylene layer 51. The outer surface of the polyethylene layer is sleeved with a rubber tube 52, and the rubber tube 52 is fixedly connected to the joint body 1 near the end of the joint body 1. The outer surface of the rubber tube 52 is provided with a gasket 53, and the gasket 53 is provided with a through hole, and the inner side of the gasket 53 is provided with a gasket 53. Both ends are provided with a convex shape 54, and the shape of the gasket 53 is an arc opening outward. The self-tapping screw 55 passes through the gasket 53, the rubber tube 52 and the metal mesh in sequence and is fixed inside the polyethylene layer 51. By arranging the polyethylene layer 51 and the metal mesh, the self-tapping screw 55 passes through the gasket 53 and breaks through the rubber tube 52 to enter the polyethylene layer 51 and can be better fixed inside the metal mesh. The flexibility of the rubber tube 52 is utilized to reduce the vibration at the rubber tube 52 and the large-diameter pipe 2. The sealing device can be applicable to different pipe diameters, making the invention more universal and flexible. The sealing device has a simple structure, is easy to install, and has a good sealing effect.

[0032] It should be noted that the present invention is a two-way pipe joint with a variable diameter. The user screws the front end of the joint body 1 to the large-diameter pipe 2, and the joint body 1 can be fixed to the ground through the fixing plate 43 and the column 42. The pressing plate 48 can be pressed downward through the rotation connection between the connecting arm 47 and the side of the fixing ring 41, so that the lower end of the pressing plate 48 fits on the upper side of the front end of the joint body 1. Under the action of the lever principle, the rear end of the connecting arm 47 can be pushed upward, so that the pipe support 491 can be pushed against the lower end of the small-diameter pipe 3, so that the front end of the small-diameter pipe 3 is flush with the rear end of the joint body 1, and the threaded support rod 494 is rotated to be perpendicular to the small-diameter pipe 3, and the threaded support rod 494 is adjusted to make The chassis 495 contacts the ground, and the position of the thin-diameter pipe 3 can be fixed. Through the rotational connection between the fixing seat 44 and the rear end of the pin rod 45, the pin rod 45 can be rotated so that the front end of the pin rod 45 is inserted into the inside of the clamping seat 46. Through the fixed connection between the clamping seat 46 and the pressing plate 48, the pressing plate 48 and the connecting arm 47 can be fixed at the current position, so that the position of the thin-diameter pipe 3 will not change, and the thin-diameter pipe 3 can be conveniently fixed to the rear end of the joint body 1. After the connection is completed, the joint body 1 and the thick-diameter pipe 2 and the thin-diameter pipe 3 at both ends can be supported all the time, so that the force applied to the joint body 1 is shared, thereby preventing the joint body 1 from being loosened due to the large pressure applied to the joint body 1.

[0033] 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 two-way reducing pipe joint, comprising a joint body (1), characterized in that: The front end of the joint body (1) is movably connected to a thick-diameter pipe (2), the rear end of the joint body (1) is movably connected to a thin-diameter pipe (3), the middle part of the joint body (1) is fixedly connected to a fixed support mechanism (4), the fixed support mechanism (4) comprises a fixing ring (41), the lower end of the fixing ring (41) is fixedly connected to a column (42), the lower end of the column (42) is fixedly connected to a fixing plate (43), a connecting arm (47) is provided on the side of the fixing ring (41), the front end of the connecting arm (47) is fixedly connected to a pressing plate (48), the upper end of the pressing plate (48) is fixedly connected to the fixing plate (43), and the fixing arm (47) is fixedly connected to the front end of the connecting arm (47). A card seat (46) is connected, the card seat (46) is movably connected with a pin rod (45) inside, the rear end of the pin rod (45) is movably connected with a fixed seat (44), the rear end of the connecting arm (47) is fixedly connected with a supporting mechanism (49), the supporting mechanism (49) comprises a pipe support (491), the lower end of the pipe support (491) is fixedly connected with an ear piece (492), the inside of the ear piece (492) is penetrated by a connecting shaft (493), the middle part of the connecting shaft (493) is movably connected with a threaded support rod (494), and the bottom end of the threaded support rod (494) is fixedly connected with a chassis (495); A fixed shaft is provided between the middle part of the connecting arm (47) and the fixing ring (41), and the connecting arm (47) is rotatably connected to the fixing ring (41) via the fixed shaft. Two groups of connecting arms (47) are provided, and the two groups of connecting arms (47) are symmetrically arranged on both sides of the fixing ring (41); The lower end of the fixing seat (44) is fixedly connected to the upper front end of the joint body (1); a fixing shaft is provided inside the fixing seat (44); the rear end of the pin rod (45) is rotatably connected to the fixing seat (44) through the fixing shaft; the fixing seat (44) and the clamping seat (46) are both concave structures; the front end of the pin rod (45) is clamped inside the clamping seat (46); A sealing device is provided at the connection between the joint body (1) and the large-diameter pipe (2), the sealing device comprising a polyethylene layer (51), a metal mesh, a rubber tube (52), a gasket (53) and a self-tapping screw (55); the polyethylene layer (51) is formed by coating melted polyethylene on the surface of the large-diameter pipe (2); the metal mesh is located inside the polyethylene layer (51); a rubber tube (52) is sleeved on the outer surface of the polyethylene layer (51); the rubber tube (52) is fixedly connected to the joint body (1) at one end close to the joint body; a gasket (53) is provided on the outer surface of the rubber tube (52); a through hole is formed on the gasket (53); protrusions (54) are provided at both ends of the inner side of the gasket (53); and the self-tapping screw passes through the gasket (53), the rubber tube (52) and the metal mesh in sequence and is fixed inside the polyethylene layer (51); The metal mesh is an annular structure, and the thickness of the metal mesh is lower than that of the polyethylene layer (51).

2. A reducing two-way pipe joint according to claim 1, characterized in that: The pressing plate (48) is an arc-shaped structure, and the internal dimensions of the pressing plate (48) are compatible with the external dimensions of the front end of the joint body (1). The upper end of the pipe support (491) is an arc-shaped structure, and the upper end dimensions of the pipe support (491) are compatible with the external dimensions of the small-diameter pipe (3).

3. The reducing two-way pipe joint according to claim 1, characterized in that: The two ends of the tube support (491) are fixedly connected to the rear end of the connecting arm (47); the ear piece (492) is an inverted concave structure; the connecting shaft (493) passes through the upper end of the threaded support rod (494); and the connecting shaft (493) is rotatably connected to the upper end of the threaded support rod (494).

4. The reducing two-way pipe joint according to claim 1, characterized in that: Both ends of the fixing plate (43) are provided with fixing bolts.

5. The reducing two-way pipe joint according to claim 1, characterized in that: The shape of the gasket (53) is an arc that opens outwards.

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