Clamping and pressing type elbow

Abstract

The utility model relates to the technical field of clamping-pressing type elbows, and discloses a clamping-pressing type elbow which is used for being installed with an external pipeline in a clamping-pressing mode and comprises a double-clamping-pressing elbow body, the two ends of the double-clamping-pressing elbow body are fixedly connected with a lengthened bell mouth A and a lengthened bell mouth B respectively, clamping-pressing connectors are arranged at the tail of the lengthened bell mouth A and the tail of the lengthened bell mouth B respectively, and the clamping-pressing connectors are connected with the two ends of the double-clamping-pressing elbow body in a clamping-pressing mode. The length of the lengthened bellmouth A and the length of the pressing connector are a, a is larger than or equal to 100 mm and smaller than or equal to 200 mm, and / or 200 mm is smaller than a, the length of the lengthened bellmouth B and the length of the pressing connector (4) are b, b is larger than or equal to 100 mm and smaller than or equal to 200 mm, and / or 200 mm is smaller than b. A certain length can be reserved, so that clamping installation is facilitated, and the adjusting function of connecting pipeline size compensation is achieved.

Description

Technical Field

[0001] This application belongs to the technical field of press-fit elbows and relates to a press-fit elbow. Background Technology

[0002] In the process of realizing this invention, the inventors discovered that the prior art has at least the following problems: the thin-walled stainless steel 90° elbows on the market are all produced according to the size and form of domestic and foreign standards, but they cannot be applied to size compensation, wall penetration, pre-embedded wall penetration, and secondary installation of pipelines.

[0003] As the requirements for efficient installation and energy saving in pipeline systems continue to increase, existing elbow fitting connection technologies face challenges. Stainless steel pipes present inconveniences in some complex pipeline layouts or conventional construction, such as: needing to lay 90° elbows to the corner of the wall, making it difficult to coordinate multiple pipe bends, and the length of the supports may not be adjusted after adjustment. It is also inconvenient to press-fit installation when laying through walls or embedding in concrete walls inside and outside the building. In addition, when secondary installation of pipelines encounters risers (rainwater pipes, fire pipes) that are blocked at the corner of the building, it is impossible to use crimping tools.

[0004] Therefore, how to provide a press-fit elbow that is easy to install using press-fit clamps has become an urgent technical problem to be solved. Utility Model Content

[0005] To overcome the problems existing in the related technologies, this application aims to provide a press-fit elbow that can be easily installed using press-fit jaw tools.

[0006] This application is achieved through the following technical solution.

[0007] This technical solution provides a press-fit elbow for press-fit installation with external pipes, including: a double press-fit elbow, wherein extended socket A and extended socket B are fixedly connected to both ends of the double press-fit elbow respectively, and both extended socket A and extended socket B are provided with press-fit interfaces at their tail ends;

[0008] The sum of the lengths of the extended socket A and the crimp interface is a, where 100mm ≤ a ≤ 200mm, and / or 200mm < a;

[0009] The combined length of the extended socket B and the crimp interface is b, where 100mm ≤ b ≤ 200mm, and / or 200mm < b.

[0010] The present invention is further configured to include a sealing ring, wherein one end of the extended socket A near the crimping interface is crimped with a crimping groove by a crimping tool, and the sealing ring abuts against the side of the crimping groove near the crimping interface, and the sealing ring is used to cooperate with the external pipe to form a seal.

[0011] The present invention is further configured such that a groove is provided on the outside of the sealing ring, and the external pipe is snapped into the inside of the groove.

[0012] The present invention is further configured such that a through hole is provided on the side of the pressing groove near the pressing interface, and a screw hole is provided at the corresponding position of the sealing ring, the screw hole being used to install a fixing screw.

[0013] The present invention is further configured such that both the hole and the screw hole are provided in multiple portions and are evenly distributed.

[0014] The present invention is further configured such that the pipe diameters of the extended socket A and the extended socket B are equal, and are equal to the pipe diameter of the double-clamp elbow.

[0015] The present invention is further configured such that the diameter difference between the extended socket A and the extended socket B is greater than zero, and the diameter difference between the extended socket A, the extended socket B and the double-clamp elbow is greater than zero.

[0016] The above technical solution has the following technical effects: by increasing the length of the socket, when the elbow is laid along the wall to multiple turning areas, when it passes through the wall, when the pipeline is pre-embedded during the construction of the building, or when the riser is blocked during the secondary installation of the pipeline, a certain length can be reserved to facilitate the snap-fit ​​installation and realize the adjustment function of the connection pipeline size compensation.

[0017] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0018] The above and other objects, features and advantages of this application will become more apparent from the more detailed description of exemplary embodiments thereof in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments thereof.

[0019] Figure 1 This is a schematic diagram of the structure shown in one embodiment of this application;

[0020] Figure 2 This is a schematic diagram of wall penetration and pre-embedding shown in one embodiment of this application;

[0021] Figure 3 This is a schematic diagram of the secondary installation of the corner riser shown in one embodiment of this application;

[0022] Figure 4 This is a cross-sectional view of the elongated socket shown in one embodiment of this application.

[0023] Attached reference numerals: 1. Double-clamp elbow; 2. Extended socket A; 3. Extended socket B; 4. Clamping interface; 5. Sealing ring; 6. Fixing screw. Detailed Implementation

[0024] The technical solutions of some embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0025] The technical solutions of the embodiments of this application are described in detail below with reference to the accompanying drawings.

[0026] This utility model discloses a press-fit elbow for press-fit installation with external pipes, such as... Figures 1-4 As shown, it includes: a double-clamping elbow 1, with an extended socket A2 and an extended socket B3 fixedly connected to both ends of the double-clamping elbow 1, and a clamping interface 4 provided at the tail of both the extended socket A2 and the extended socket B3.

[0027] The sum of the lengths of the extended socket A2 and the crimping interface 4 is a, where 100mm ≤ a ≤ 200mm, and / or 200mm < a;

[0028] The sum of the lengths of the extended socket B3 and the crimping interface 4 is b, where 100mm ≤ b ≤ 200mm, and / or 200mm < b.

[0029] It should be noted that the extended socket is based on the national standard double-press 90° elbow, with the bending radius, inner diameter, outer diameter, drum diameter, and rubber ring remaining unchanged. The original socket is extended, which is the part where the external pipe is inserted. The socket length is extended from the conventional pipe fitting of less than 50mm to 100mm-200mm and above.

[0030] Among them, domestic and foreign double-press, single-press, ring-press and other pipe fittings that are compatible with pipe sockets or require clamping after insertion are generally designed to cover DN15-DN300. The construction form of the pipe fittings can be converted from 90° elbows to any form, such as 45° elbows, tees, reducing elbows, threaded straight pipes and other broadly defined press-fit pipe fittings.

[0031] like Figure 4 As shown, it also includes a sealing ring 5. One end of the extended socket A2 that is close to the crimping interface 4 is crimped with a crimping groove by a crimping tool. The sealing ring 5 abuts against the side of the crimping groove that is close to the crimping interface 4. The sealing ring 5 is used to cooperate with the external pipe to form a seal.

[0032] It should be noted that after the outer pipe is inserted into the extended socket, it abuts against the outer surface of the sealing ring 5, and then engages at the crimping interface 4. The seal formed by the engagement of the sealing ring 5 and the crimping elbow is achieved.

[0033] like Figure 4 As shown, the sealing ring 5 has a groove on its outside, and the external pipe is snapped into the inside of the groove.

[0034] like Figure 4 As shown, the pressing groove has a through hole on the side near the pressing interface 4, and the sealing ring 5 has a screw hole at the corresponding position. The screw hole is used to install the fixing screw 6.

[0035] like Figure 4 As shown, both the holes and the screw holes are provided in multiples and are evenly distributed.

[0036] like Figure 1 As shown, the pipe diameters of the extended socket A2 and extended socket B3 are equal, and are also equal to the pipe diameter of the double-clamp elbow 1.

[0037] like Figure 1 As shown, the diameter difference between the extended socket A2 and the extended socket B3 is greater than zero, and the diameter difference between the extended socket A2, the extended socket B3 and the double-clamp elbow 1 is also greater than zero.

[0038] Working principle: By extending the socket length, the elbow can be reserved to facilitate clamping and installation when it is laid along the wall to multiple turning areas, when it passes through the wall, when the pipeline is pre-embedded during the construction of the building pipeline, or when the riser is blocked during the secondary installation of the pipeline. This changes the fixed full insertion of the external pipeline material into an adjustable half insertion, realizing the adjustment function of compensating for the size of the connected pipeline.

[0039] In other words, when pipes are laid along the wall to areas with multiple bends, and the wall is uneven, fixed or adjustable brackets are used. This leads to unavoidable errors in the calculation of the length of the pipes that need to be crimped for connection. As a result, the fixed length of the pipes and fittings in the sockets cannot be coordinated, resulting in problems of being too short or too long. The extended socket design can crimp and connect pipes with a size error of 26mm-200mm and more. That is, the pipe inserted into the socket only needs to exceed the socket cross-section by 26mm or more to achieve a crimp connection.

[0040] In addition, for some construction projects where pipes pass through walls, they can be directly installed through the wall with extended sockets. The extended sockets can adapt to different wall thicknesses and meet the adjustment function of compensating for the size of the connected pipes.

[0041] In the case of pre-embedded pipes in building construction, the extended socket can be directly pre-embedded into the cast-in-place walls, columns, beams, and floors. The extended socket can adapt to the thickness of the cast-in-place structure and meet the adjustment function of compensating for the size of the connected pipes.

[0042] In actual construction, secondary installation of pipelines often occurs, and when the pipeline is laid to the corner of the wall, there is a problem of the riser obstructing the pipe. The conventional 90° elbow is a fixed size. When the external connecting pipe is inserted into the socket, crimping tools such as crimping pliers cannot be used because the crimping position of the socket is inside or flush with the obstructing riser. Multi-functional elbows with extended sockets can be longer than the obstruction range of the riser, and crimping tools can be used to perform the crimping operation from the outside.

[0043] The various embodiments of this application have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or improvement of the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A press-fit elbow for press-fit installation with an external pipe, characterized in that, include: Double-clamp elbow (1), with extended socket A (2) and extended socket B (3) fixedly connected to both ends of the double-clamp elbow (1), and clamping interface (4) provided at the tail of both extended socket A (2) and extended socket B (3); The sum of the lengths of the extended socket A (2) and the crimping interface (4) is a, 100mm≤a≤200mm, and / or, 200mm<a; The sum of the lengths of the extended socket B (3) and the crimp interface (4) is b, 100mm≤b≤200mm, and / or, 200mm<b.

2. The press-fit elbow according to claim 1, characterized in that, It also includes a sealing ring (5). The end of the extended socket A (2) that is close to the crimping interface (4) is crimped with a crimping groove by a crimping tool. The sealing ring (5) abuts against the side of the crimping groove that is close to the crimping interface (4). The sealing ring (5) is used to cooperate with the external pipe to form a seal.

3. The press-fit elbow according to claim 2, characterized in that, The sealing ring (5) has a groove on its outside, and the external pipe is snapped into the inside of the groove.

4. The press-fit elbow according to claim 2 or 3, characterized in that, The pressing groove has a through hole on the side near the pressing interface (4), and the sealing ring (5) has a screw hole at the corresponding position. The screw hole is used to install a fixing screw (6).

5. The press-fit elbow according to claim 4, characterized in that, Both the holes and the screw holes are provided in multiples and are evenly distributed.

6. The press-fit elbow according to claim 1, characterized in that, The extended socket A (2) and extended socket B (3) have the same pipe diameter, and are equal to the pipe diameter of the double-clamp elbow (1).

7. The press-fit elbow according to claim 1, characterized in that, The diameter difference between the extended socket A (2) and the extended socket B (3) is greater than zero, and the diameter difference between the extended socket A (2), the extended socket B (3) and the double-clamp elbow (1) is also greater than zero.

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