Novel elbow joint

Abstract

The utility model discloses a novel elbow joint, which belongs to the technical field of pipeline connecting structures and comprises an elbow body, one end of the elbow body is provided with a first connector, the other end of the elbow body is provided with a second connector, the second connector is connected with a hard pipe through a connecting piece, and the side wall of the second connector is circumferentially provided with an arc-shaped hole for the connecting piece to penetrate through. The first connector and the bent pipe body are of an integrated structure, and the second connector and the bent pipe body are connected through a detachable connecting structure. One end of the bent pipe body is connected with a hose through a first connector, the other end of the bent pipe body is connected with a hard pipe through a second connector, and the second connector and the hard pipe are fixed together through a connecting piece; the first connector and the elbow body are of an integrated structure, so that a hose can be conveniently and directly sleeved; the second connector is connected with the elbow body through a detachable connecting structure, so that the elbow is convenient and quick to mount and dismount, and is particularly suitable for operation in narrow space. The device is simple and compact in structure and convenient and fast to operate, and the convenience of installation is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of pipeline connection structures, and particularly relates to a novel elbow joint. Background Art

[0002] In the piping system, an elbow is a pipe fitting that changes the direction of the pipe. Most existing elbows are of one-piece structure, and the joints at both ends of the elbow are usually connected to the pipes at both ends through connection structures such as flanges or threaded holes. This connection method has certain limitations and is mostly suitable for connecting two hard pipes, but not for connecting a hose and a hard pipe. Therefore, it is necessary to develop a split-structure elbow to complete the quick connection between a hose and a hard pipe. Utility Model Content

[0003] In order to solve the above problems, the utility model provides a novel elbow joint.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0005] A new type of elbow joint comprises an elbow body, one end of which is provided with a first connector that can be connected to a hose, and the other end of which is provided with a second connector that can be connected to a hard pipe, the second connector being connected to the hard pipe via a connector, and an arc-shaped hole for the connector to pass through being circumferentially provided on the side wall of the second connector; the first connector and the elbow body are an integral structure, and the second connector is connected to the elbow body via a detachable connection structure.

[0006] Furthermore, the connecting structure includes mutually cooperating slots and protrusions, positioning holes and positioning blocks, and there are multiple slots and positioning holes, and the multiple slots and positioning holes are staggered along the lower edge of the second connecting head. The slot is a notch groove with an open lower end, and the arc hole is arranged on the upper side wall of the second connecting head; there are multiple positioning holes and positioning blocks, and the protrusions and positioning blocks are correspondingly arranged on the outer wall of the connecting end of the elbow body.

[0007] Furthermore, the protrusion is arranged on the edge of the connecting end of the elbow body, and a certain distance is set between the positioning block and the edge of the connecting end.

[0008] Furthermore, there are four of each of the slots and protrusions, positioning holes and positioning blocks. The slots and positioning holes are staggered on the side wall of the second connector, and the protrusions and positioning blocks are staggered on the outer wall of the elbow body.

[0009] Furthermore, the connecting member is a retaining spring, which is an arc-shaped metal ring, and both ends of the retaining spring are respectively provided with an upward 90° bend and / or a downward 90° bend; two arc-shaped holes are symmetrically provided on the side wall of the second connecting head.

[0010] Further, a positioning groove for bending and limiting one end of the circlip is provided on the outer wall of the second connector above one arc-shaped hole, and a positioning groove for bending and limiting the other end of the circlip is provided on the side wall of the second connector below the other arc-shaped hole. The two positioning grooves are symmetrically arranged and are located in the middle of the two arc-shaped holes.

[0011] Further, a sealing platform for limiting the sealing ring is provided on the inner side of the inner wall of the connecting end of the second connector, and a limiting groove for limiting the rigid pipe is provided on the inner wall edge. A limiting platform is correspondingly provided on the outer wall of the rigid pipe; a convex portion is provided on the outer wall of the second connector at the position corresponding to the limiting groove, and the circlip is provided with an outwardly protruding transition section in the middle for bypassing the convex portion.

[0012] Further, there are two limiting grooves. A guiding groove for the circlip to pass through is provided in the middle of both ends of one convex portion. Steps are provided on both sides of the transition section of the circlip. Guide plates are arranged in a staggered manner up and down on both sides of the other convex portion, and the guide plates are used for limiting the steps on both sides of the transition section.

[0013] Further, the first connector is a taper connector, and an annular boss is provided at the root of the taper connector.

[0014] Further, the second connector, the first connector and the elbow body are all made of plastic material and are all manufactured by an integral injection molding process.

[0015] Compared with the prior art, the technical progress achieved by the present utility model lies in:

[0016] One end of the elbow body of the present utility model is connected to a hose through a first connector, and the other end is connected to a rigid pipe through a second connector. An arc-shaped hole for a connecting member to pass through is circumferentially provided on the side wall of the second connector, which facilitates fixing the second connector and the rigid pipe together through the connecting member; the first connector and the elbow body are of an integral structure, which facilitates directly sleeving the hose; the second connector and the elbow body are connected through a detachable connection structure, which facilitates quick installation and disassembly, especially suitable for operation in a narrow space. The structure of the present utility model is simple and compact, and both ends can be quickly connected to the hose and the rigid pipe respectively, with convenient and fast operation, improving the convenience of installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings are used to provide a further understanding of the present utility model and constitute a part of the specification. They are used together with the embodiments of the present utility model to explain the present utility model and do not constitute a limitation to the present utility model.

[0018] In the drawings:

[0019] Figure 1Schematic diagram of the structure of a novel elbow joint provided by an embodiment of the present utility model;

[0020] Figure 2 is Figure 1 exploded view of the elbow joint in the middle;

[0021] Figure 3 Schematic diagram of the structure of the circlip in the embodiment of the present utility model;

[0022] In the figure: 00 - circlip, 01 - bend, 02 - transition section; 10 - elbow body, 11 - first connector, 12 - second connector;

[0023] 1 - arc hole; 2 - card slot; 3 - protrusion; 4 - positioning hole; 5 - positioning block; 6 - positioning groove; 7 - limiting groove; 8 - protrusion part; 9 - guiding groove; 13 - guiding plate. Specific embodiments

[0024] The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The embodiments of the present utility model will be described below with reference to the accompanying drawings.

[0025] Such as Figure 1 , Figure 2 As shown, a novel elbow joint includes an elbow body 10. One end of the elbow body 10 is provided with a first connector 11 capable of being connected to a flexible hose, and the other end of the elbow body 10 is provided with a second connector 12 capable of being connected to a rigid pipe. The second connector 12 is connected to the rigid pipe through a connecting member. An arc hole 1 for the connecting member to pass through is circumferentially provided on the side wall of the second connector 12, and the connecting member can connect the second connector 12 and the rigid pipe; the first connector 11 and the elbow body 10 are of an integral structure, and the second connector 12 and the elbow body 10 are connected through a detachable connection structure. The elbow joint adopting this structure can connect a flexible hose and a rigid pipe at the same time, and the second connector and the elbow body adopt a split detachable structure, which is more convenient and fast for loading and unloading, and improves the convenience of assembly.

[0026] In a specific embodiment of the present utility model, such as Figure 2As shown, the connection structure includes a card slot 2 and a protrusion 3, a positioning hole 4 and a positioning block 5 that cooperate with each other. There are multiple card slots 2 and positioning holes 4, and the multiple card slots 2 and positioning holes 4 are arranged alternately along the lower edge of the second connector 12. The card slot 2 is a notch groove with an open lower end, and the arc-shaped hole 1 is arranged on the upper side wall of the second connector 12; there are multiple positioning holes 4 and positioning blocks 5, and the protrusion 3 and the positioning block 5 are correspondingly arranged on the outer wall of the connecting end of the elbow body 10. Among them, the protrusion 3 is arranged on the edge of the connecting end of the elbow body 10, and there is a certain distance between the positioning block 5 and the edge of the connecting end. During assembly, the card slot 2 on the second connector 12 is inserted axially corresponding to the protrusion 3 on the elbow body 10. When the positioning block 5 on the elbow body 10 enters the positioning hole 4 on the second connector 12, the connection and fixation of the two can be completed.

[0027] During specific design, there are four card slots 2 and protrusions 3, and four positioning holes 4 and positioning blocks 5. The card slots 2 and positioning holes 4 are arranged alternately on the side wall of the second connector 12, and the protrusions 3 and positioning blocks 5 are arranged alternately on the outer wall of the elbow body 10. The firmness of the connection between the second connector and the elbow body can be ensured through four groups of connection structures.

[0028] In a specific embodiment of the present utility model, as Figure 3 shown, the connecting member is a snap ring 00. The snap ring 00 is an arc-shaped metal ring, and both ends of the snap ring 00 are respectively provided with a 90° upward bend 01 and / or a 90° downward bend 01; two arc-shaped holes 1 are symmetrically arranged on the side wall of the second connector 12, and a part of the snap ring near the bend passes through the arc-shaped hole and is simultaneously clamped into the arc-shaped groove on the outer wall of the rigid tube.

[0029] Corresponding to the above snap ring structure design, as Figure 1 、 2 shown, a positioning groove 6 for limiting one end bend 01 of the snap ring 00 is provided on the outer wall of the second connector 12 above one arc-shaped hole 1, and a positioning groove 6 for limiting the other bend 01 of the snap ring 00 is provided on the side wall of the second connector 12 below the other arc-shaped hole 1. The two positioning grooves 6 are symmetrically arranged and are arranged in the middle of the two arc-shaped holes 1. The above structure can realize the installation and positioning of the snap ring on the second connector, and at the same time, with the cooperation of the arc-shaped groove on the outer wall of the rigid tube and the snap ring, the connection and fixation of the second connector and the rigid tube are realized.

[0030] Further optimize the above solution, as Figure 1As shown in the figure, inside the inner wall of the connection end of the second connector 12, there is a sealing platform for limiting the sealing ring, and at the edge of the inner wall, there is a limiting groove 7 for limiting the rigid tube. A limiting platform is correspondingly provided on the outer wall of the rigid tube. With this structure, axial limitation of the rigid tube can be achieved. At the position corresponding to the limiting groove 7 on the outer wall of the second connector 12, there is a protruding portion 8. The snap ring 00 has a transition section 02 protruding outward in the middle for bypassing the protruding portion 8. During assembly, the end of the rigid tube is tightly pressed against the sealing platform through the sealing ring to achieve the seal between the rigid tube and the second connector. Then, the snap ring is used to fix the two together.

[0031] In a specific embodiment of the present utility model, as Figure 2 , 3 shown, there are two limiting grooves 7. In the middle of both ends of a protruding portion 8, there is a guiding groove 9 for the snap ring 00 to pass through. On both sides of the transition section 02 of the snap ring 00, there are steps 03. On both sides of the other protruding portion 8, guiding plates 13 are arranged in a staggered up-and-down manner. The guiding plates 13 are used to limit the steps 03 on both sides of the transition section 02. Using the snap ring with the above-mentioned staggered and special-shaped structure can avoid the detachment phenomenon during use and further improve the connection firmness.

[0032] During specific manufacturing, as Figure 1 shown, the first connector 11 is a taper connector, and a circular convex platform 1 is provided at the root of the taper connector 11. Using a taper connector can increase the contact area with the hose and ensure the firm connection between the elbow head and the hose. At the same time, the taper connector is characterized by reliable performance and convenient loading and unloading. By using a taper connector, the quick connection and disconnection with the hose can be effectively achieved, thereby simplifying the equipment assembly and maintenance process and improving work efficiency.

[0033] At the same time, the second connector 12, the first connector 11, and the elbow body 10 are all made of plastic material and are all manufactured by an integral injection molding process. This process is suitable for mass production.

[0034] In summary, the elbow connector provided by the present utility model has the advantages of simple and compact structure and convenient and fast assembly. One end is connected to the hose by a taper connector, and the other end is connected and fixed to the rigid tube through the second connector and the snap ring, which is convenient for loading and unloading. At the same time, the second connector and the elbow body adopt a detachable split structure, further improving the convenience of assembly. The use of the sealing ring and the limiting groove can ensure the reliable seal and limitation between the rigid tube and the elbow head, and the snap ring can achieve the firm connection between the two. Using the present utility model can achieve the quick connection between the hose and the rigid tube, with convenient and fast operation, firm connection, and good sealing performance.

[0035] Finally, it should be noted that the above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the scope of protection of the claims of the present utility model.

Claims

1. A new elbow joint, characterized in that: It includes a bent pipe body, one end of which is provided with a first connector that can be connected to a hose, and the other end of the bent pipe body is provided with a second connector that can be connected to a hard pipe, the second connector is connected to the hard pipe through a connecting piece, and an arc-shaped hole is circumferentially provided on the side wall of the second connector for the connecting piece to pass through; the first connector and the bent pipe body are an integrated structure, and the second connector is connected to the bent pipe body through a detachable connecting structure.

2. A new elbow joint according to claim 1, characterized in that: The connecting structure includes mutually cooperating slots and protrusions, positioning holes and positioning blocks. There are multiple slots and positioning holes, and the multiple slots and positioning holes are staggered along the lower edge of the second connecting head. The slot is a notch groove with an open lower end, and the arc hole is arranged on the upper side wall of the second connecting head; there are multiple positioning holes and positioning blocks, and the protrusions and positioning blocks are correspondingly arranged on the outer wall of the connecting end of the elbow body.

3. A new elbow joint according to claim 2, characterized in that: The protrusion is arranged on the edge of the connection end of the elbow body, and a certain distance is arranged between the positioning block and the edge of the connection end.

4. A new elbow joint according to claim 2, characterized in that: There are four of each of the slots and protrusions, positioning holes and positioning blocks. The slots and positioning holes are staggered on the side wall of the second connector, and the protrusions and positioning blocks are staggered on the outer wall of the elbow body.

5. The novel elbow joint according to claim 1 is characterized in that: The connecting piece is a clip, which is an arc-shaped metal ring. Both ends of the clip are respectively provided with an upward 90° bend and / or a downward 90° bend; two arc-shaped holes are symmetrically provided on the side wall of the second connector.

6. A new elbow joint according to claim 5, characterized in that: A positioning groove for limiting the bending of one end of the retaining spring is provided on the outer wall of the second connector above one arc-shaped hole, and a positioning groove for limiting the bending of the other end of the retaining spring is provided on the side wall of the second connector below the other arc-shaped hole. The two positioning grooves are symmetrically arranged and arranged in the middle of the two arc-shaped holes.

7. The novel elbow joint according to claim 5 is characterized in that: A sealing platform for limiting the sealing ring is provided on the inner side of the inner wall of the connecting end of the second connecting head, and a limiting groove for limiting the hard tube is provided on the edge of the inner wall, and a limiting platform is provided on the outer wall of the hard tube accordingly; a protrusion is provided on the outer wall of the second connecting head at a position corresponding to the limiting groove, and the retaining spring is provided with a transition section protruding outward in the middle for bypassing the protrusion.

8. A new elbow joint according to claim 7, characterized in that: There are two limiting grooves, and guide grooves for the passing of the retaining spring are provided in the middle of both ends of one protrusion. Steps are provided on both sides of the transition section of the retaining spring, and guide plates are staggered up and down on both sides of the other protrusion. The guide plates are used to limit the steps on both sides of the transition section.

9. A new elbow joint according to any one of claims 1 to 8, characterized in that: The first connector is a pagoda connector, and a ring boss is provided at the root of the pagoda connector.

10. A new elbow joint according to claim 9, characterized in that: The second connector, the first connector and the elbow body are all made of plastic and are manufactured using an integrated injection molding process.

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