A bend connector

Abstract

The utility model relates to the technical field of pipeline elbow, specifically relates to a bend connecting pipe fitting, the inner side of two adjusting frames is slidably connected with connecting pipe, and one end of connecting pipe is detachably connected with butt joint pipe, and one end of butt joint pipe is fixedly connected between telescopic pipe and one end of elbow pipe, the flange plate is fixedly connected on one end of two connecting pipes, the both sides of two adjusting frames are fixedly connected with side frame, and the inner side of two side frames is equipped with side plate. Make connecting pipe freely slide and accurate positioning in certain range, thereby realize flexible adjustment function to connecting length, significantly improve the adaptation ability and construction convenience of bend connecting pipe fitting under complex installation environment. Meanwhile, the detachable connection mode is adopted between connecting pipe and butt joint pipe, and the quick butt joint structure of flange plate and external pipeline, not only improve the convenience of replacing damaged parts, also strengthen the modular degree and versatility of system.

Description

Technical Field

[0001] This utility model relates to the field of pipe elbow technology, and in particular to an elbow connecting pipe fitting. Background Technology

[0002] Elbows are indispensable key components in piping systems, widely used in construction, municipal engineering, industrial equipment, and fluid transportation. Their primary function is to achieve directional changes or branch connections within pipelines, ensuring smooth flow of fluid media between pipes with different orientations. Because they play a crucial role in system sealing, pressure resistance, and ease of installation, the design and structural optimization of elbows directly impact the stability, safety, and construction efficiency of the entire piping system.

[0003] Specifically, the existing utility model patent CN215891536U discloses a connecting elbow pipe fitting, including a pipe body. This fitting consists of a bent section and connecting sections connected to its two ends via a connecting structure. The inner wall of the connecting section is threaded. The connecting structure includes a connecting rod, a connecting groove, and a positioning element for insertion and fixing, achieving a separate, detachable connection between the connecting section and the bent section. The advantage of this structure is that when the connecting section suffers damage such as stripping, only the damaged part needs to be replaced without replacing the entire elbow, thus reducing resource waste and improving economic efficiency and environmental friendliness.

[0004] However, technical defects still exist in practical applications. Existing elbow connection fittings are mostly fixed-length structures, which cannot be extended or contracted over short distances according to on-site installation requirements. This significantly increases installation difficulty when faced with pipe installation errors or limited space. Although the existing structure achieves detachable connection between the connecting section and the bending section, it lacks the ability to adapt to axial displacement, making it difficult to meet different length matching requirements and limiting its versatility in complex environments. Due to the lack of a fine-tuning structure, misalignment, omissions, or forced splicing due to dimensional errors are prone to occur during pipe docking, thereby affecting the sealing effect and system operation safety. Therefore, in view of the many shortcomings of the existing technology, we urgently need an innovative elbow connection fitting to solve the above problems. Summary of the Invention

[0005] The purpose of this utility model is to provide a elbow connection fitting that solves the problem that most elbow connection fittings in the prior art are fixed length structures, which cannot be extended or contracted over short distances according to on-site installation requirements, resulting in a significant increase in installation difficulty when faced with pipe installation errors or limited space.

[0006] To achieve the above objectives, this utility model provides an elbow connecting pipe fitting, including a bend, and adjusting frames are fixedly connected to both ends of the bend.

[0007] Both adjusting frames have slidably connected connecting pipes on their inner sides, and one end of each connecting pipe is detachably connected to a connecting pipe. One end of the connecting pipe is fixedly connected to one end of a bend via a telescopic pipe. Flanges are fixedly connected to one end of each connecting pipe. Side frames are fixedly connected to both sides of each adjusting frame, and side plates are provided on the inner side of each side frame. One end of each side plate is fixedly connected to one side of a flange. Fixing plates are fixedly connected to both sides of each adjusting frame, and support rods are provided on the top of each fixing plate. Limiting grooves for use with the support rods are provided on both the fixing plates and the side plates.

[0008] The bend has connecting sleeves fixedly connected to both ends, and one side of each connecting sleeve is fixedly connected to one side of each of the two adjusting frames. The top of each adjusting frame has a top groove.

[0009] Each of the two connecting pipes has a slider fixedly connected to both sides, and all four sliders are slidably connected to the inner walls of the two adjustment frames through grooves.

[0010] Each of the four support rods is fitted with a tension spring at its upper part, and the top of the support rod is elastically connected to the top of the fixed plate through the tension spring. Several limiting grooves are provided on the four side plates.

[0011] The two connecting pipes are fitted with fixing sleeves at their respective connections to the two connecting pipes, and the fixing sleeves are detachably connected to the connecting pipes and the connecting pipes.

[0012] Both sides of the top of the two fixed sleeves are provided with threaded rods, and the fixed sleeves, as well as the connecting pipe and the connecting tube, are provided with threaded grooves for use with the threaded rods.

[0013] This utility model discloses an elbow connecting pipe fitting. Through the combined design of an adjusting frame, connecting pipe, telescopic pipe, and support rod limiting structure, the connecting pipe can slide freely and be precisely positioned within a certain range, thereby achieving flexible adjustment of the connection length. This significantly improves the adaptability and ease of construction of the elbow connecting pipe fitting in complex installation environments. Simultaneously, the connecting pipe and butt-joint pipe adopt a detachable connection method, combined with a flange for quick docking with external pipelines. This not only improves the convenience of replacing damaged components but also enhances the modularity and versatility of the system, facilitating rapid on-site replacement and maintenance, and reducing material waste and construction costs. The stable support structure composed of the side plates, the side frames on both sides of the adjusting frame, and the fixing plates provides good guidance and load-bearing capacity for the connecting pipe, ensuring smooth and stable operation without shaking during sliding adjustment, and improving the overall connection stability and sealing performance. The cooperation between the support rod and the limiting groove further enhances the locking reliability after adjustment, preventing displacement of the connecting pipe due to vibration or pressure changes during use, ensuring the safety and sealing of the system operation. In addition, the structure has good scalability, allowing users to replace the connecting pipes of different lengths and diameters according to actual project needs, thereby achieving a wider range of applications. It is suitable for various application scenarios such as building water supply and drainage, municipal pipe networks, and industrial equipment, greatly improving the flexibility and practicality of elbow connecting pipe fittings. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0015] Figure 1 This is a schematic diagram of the overall main view structure of an embodiment of this utility model.

[0016] Figure 2 This is a top view of an embodiment of the present invention.

[0017] Figure 3 This is a side view structural diagram of an embodiment of the present utility model.

[0018] Figure 4 This is a schematic diagram of the connecting pipe and its structure according to an embodiment of the present utility model.

[0019] Figure 5 This is a schematic diagram of the adjustment frame and its structure according to an embodiment of the present utility model.

[0020] 1. Bend; 2. Adjusting frame; 3. Connecting pipe; 4. Flange; 5. Side plate; 6. Side frame; 7. Support rod; 8. Tension spring; 9. Limiting groove; 10. Connecting sleeve; 11. Top groove; 12. Telescopic pipe; 13. Connecting pipe; 14. Fixing sleeve; 15. Threaded rod; 16. Threaded groove; 17. Slide groove; 18. Sliding block; 19. Fixing plate. Detailed Implementation

[0021] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

[0022] Please see Figure 1-5 A type of elbow connecting pipe fitting includes a bend 1, and adjusting frames 2 fixedly connected to both ends of the bend 1; connecting pipes 3 are slidably connected to the inner sides of the two adjusting frames 2, and a connecting pipe 13 is detachably connected to one end of the connecting pipe 3, and one end of the connecting pipe 13 is fixedly connected to one end of the bend 1 through a telescopic pipe 12; flanges 4 are fixedly connected to one end of the two connecting pipes 3; side frames 6 are fixedly connected to both sides of the two adjusting frames 2, and side plates 5 are provided on the inner sides of the two side frames 6, wherein one end of the two side plates 5 is fixedly connected to one side of the flange 4; fixing plates 19 are fixedly connected to both sides of the adjusting frames 2, and support rods 7 are provided on the top of the two fixing plates 19; and limiting grooves 9 for use with the support rods 7 are provided on the fixing plates 19 and the side plates 5.

[0023] First, place the bend 1 at the required position in the piping system, and select a suitable connecting pipe 3 according to the site conditions. Connect one end of the bend 13 to the connecting pipe 13 in a detachable manner. The connecting pipe 13 is then fixedly connected to one end of the bend 1 through the telescopic pipe 12. Subsequently, the operator can slide the connecting pipe 3 along the inner side of the adjusting frame 2 according to the spacing error between the pipes to be connected or the installation requirements to achieve fine-tuning extension or contraction in the axial direction. After the connecting pipe 3 slides to the designated position, the connecting pipe 3 is fixed by inserting the support rod 7 into the corresponding limiting groove 9 on the side plate 5 to ensure that it will not shift or loosen during use. Finally, the flange 4 fixed at the end of the connecting pipe 3 is used to complete the sealed connection assembly with the external pipe. The entire process allows for flexible replacement of connecting pipe 3 components of different lengths or diameters according to different working conditions, thereby meeting diverse installation requirements.

[0024] Furthermore, connecting sleeves 10 are fixedly connected to both ends of the bend 1, and one side of each connecting sleeve 10 is fixedly connected to one side of each of the two adjusting frames 2. Each adjusting frame 2 has a top groove 11. The adjusting frames 2 are securely connected to both ends of the bend 1 via the connecting sleeves 10, forming an integral structure that enhances the structural strength and stability between the connecting sections. Simultaneously, the top groove 11 on the top of the adjusting frame 2 provides convenient space for the operation of the support rod 7, facilitating quick insertion and removal of the limiting support rod 7 during installation. This design not only enhances the overall structural reliability of the device but also optimizes the on-site operation process, improving disassembly and assembly efficiency and practicality.

[0025] Furthermore, sliders 18 are fixedly connected to both sides of the two connecting pipes 3, and the four sliders 18 are slidably connected to the inner walls of the two adjusting frames 2 through the sliding grooves 17 respectively. When the connecting pipe 3 slides along the axis of the adjusting frame 2 for length fine adjustment, the sliders 18 slide synchronously along the sliding grooves 17, providing guidance and limiting functions for the connecting pipe 3, preventing it from deviating or jamming during the sliding process. This structure significantly improves the running stability and positioning accuracy of the connecting pipe 3 during the adjustment process, ensuring that it can maintain good sealing and alignment in different position states, and enhancing the stability and adaptability of the entire connection system.

[0026] Furthermore, each of the four support rods 7 is fitted with a tension spring 8, and the top of the support rod 7 is elastically connected to the top of the fixing plate 19 through the tension spring 8. Several limiting grooves 9 are provided on the four side plates 5. After the position adjustment of the connecting tube 3 is completed, the operator can insert the support rod 7 into the corresponding limiting groove 9 to achieve locking and positioning. The design of the tension spring 8 ensures that the support rod 7 is always in the spring-up state when it is not inserted into the limiting groove 9, which facilitates quick identification and operation. When it is necessary to change the position, simply press the support rod 7 to easily pull it out and reinsert it into the new limiting groove 9. This structure improves the convenience and safety of the limiting operation, enhances the locking stability after adjustment, and prevents the risk of loosening caused by vibration or pressure changes.

[0027] Furthermore, each of the two connecting pipes 13 and the two connecting pipes 3 is fitted with a fixing sleeve 14, and the fixing sleeve 14 is detachably connected to both the connecting pipe 13 and the connecting pipe 3. The fixing sleeve 14 serves as an intermediate connecting component, reliably connecting the connecting pipe 13 and the connecting pipe 3 together, while also supporting quick disassembly and replacement. This modular connection method greatly improves the versatility and maintenance convenience of the elbow connecting pipe fittings. Users can flexibly replace different specifications of connecting pipes 3 or connecting pipes 13 according to actual working conditions to meet diverse installation needs, reduce the need to replace the entire component due to partial damage, and reduce material waste and maintenance costs.

[0028] Furthermore, threaded rods 15 are provided on both sides of the top of the two fixing sleeves 14, and threaded grooves 16 for use with the threaded rods 15 are provided on the fixing sleeves 14, the connecting pipe 13, and the connecting pipe 3. When connecting the fixing sleeves 14 with the connecting pipe 13 and the connecting pipe 3, the threaded rods 15 can be tightened to make them embed into the corresponding threaded grooves 16, thereby achieving a firm fixation between the three. This structure not only improves the sealing and pressure bearing capacity of the connection, but also enhances the vibration resistance of the overall connection, avoiding loosening caused by external vibration or medium flow. At the same time, this connection method is easy to operate and quick to assemble and disassemble, and is suitable for pipeline installation and maintenance scenarios in various complex environments.

[0029] In summary:

[0030] First, place the bend 1 at the required position in the piping system, and select a suitable connecting pipe 3 according to the site installation conditions; then, connect one end of the connecting pipe 3 to the butt joint 13 detachably through the fixing sleeve 14. The fixing sleeve 14 is screwed into the threaded groove 16 on the butt joint 13 and the connecting pipe 3 by the threaded rods 15 on both sides of its top to achieve a tight connection, ensuring that the connection has good sealing performance and pressure bearing capacity; the butt joint 13 is then fixedly connected to one end of the bend 1 through the telescopic pipe 12 to form an overall flow channel. Next, the operator can slide the connecting pipe 3 along the inner wall of the adjusting frame 2 to achieve fine-tuning extension or contraction in the axial direction, according to the spacing error or space constraints between the pipes to be connected. During this process, the sliders 18 fixed on both sides of the connecting pipe 3 slide synchronously along the sliding grooves 17 opened inside the adjusting frame 2, playing a guiding and limiting role to prevent the connecting pipe 3 from shifting or getting stuck. After the connecting pipe 3 is adjusted to the designated position, the operator inserts the support rod 7 into the corresponding limiting groove 9 on the side plate 5 to lock the connecting pipe 3. The top of the support rod 7 is elastically connected to the fixing plate 19 through the tension spring 8, so that the support rod 7 automatically springs up when not inserted, which is convenient for identification and quick insertion and removal operations. After the adjustment and locking are completed, the flange 4 fixed at the end of the connecting pipe 3 is used to complete the sealing assembly with the external pipe, thereby achieving a stable connection of the entire elbow connection system. The design of this elbow connection fitting effectively solves a series of key technical problems existing in the prior art, such as inconvenience in short-distance extension and contraction adjustment, poor connection flexibility, insufficient installation adaptability, inconvenience in maintenance and replacement, and impact on construction efficiency. By introducing the combined design of the adjusting frame 2, connecting pipe 3, slider 18, and groove 17, the connecting pipe 3 achieves free sliding and precise positioning in the axial direction, significantly improving the adaptability and ease of construction of the elbow connecting pipe fitting in complex installation environments. Simultaneously, the coordinated design of the support rod 7, tension spring 8, and limiting groove 9 enhances the locking stability after adjustment, preventing loosening risks caused by vibration or medium pressure, and improving the safety and service life of the connection system. The modular connection structure composed of the fixing sleeve 14, threaded rod 15, and threaded groove 16 not only improves the sealing and vibration resistance of the connection points but also supports quick disassembly and replacement, greatly enhancing the equipment's versatility and maintenance convenience. Users can flexibly replace the connecting pipe 3 or the butt joint pipe 13 according to different working conditions, avoiding the need to replace the entire component due to partial damage, thus reducing material waste and maintenance costs. In addition, the two ends of the bend 1 are fixedly connected to the adjustment frame 2 through the connecting sleeve 10, which improves the overall structural strength and stability. The top groove 11 opened on the top of the adjustment frame 2 provides space for the operation of the support rod 7, optimizes the on-site installation process, and improves the disassembly and assembly efficiency. The quick docking structure between the flange 4 and the external pipeline further improves the connection efficiency and sealing reliability, and is suitable for various application scenarios such as building water supply and drainage, municipal pipe network, and industrial equipment.

[0031] The above-disclosed embodiments are merely one or more preferred embodiments of this application and should not be construed as limiting the scope of this application. Those skilled in the art can understand that all or part of the processes for implementing the above embodiments and equivalent changes made in accordance with the claims of this application still fall within the scope of this application.

Claims

1. A bend connecting pipe fitting, comprising a bend pipe, characterized in that, two adjusting frames are fixedly connected on both ends of the bend pipe; a connecting pipe is slidably connected to the inner side of each of the two adjusting frames, one end of the connecting pipe is detachably connected with a butt pipe, one end of the butt pipe is fixedly connected with one end of the bend pipe through an extension pipe, a flange is fixedly connected to one end of each of the two connecting pipes, side frames are fixedly connected to both sides of the two adjusting frames, side plates are arranged on the inner sides of the two side frames, one end of each of the two side plates is fixedly connected with one side of the flange, fixed plates are fixedly connected to both sides of the adjusting frame, a support rod is arranged on the top of each of the two fixed plates, and a limiting slot for the support rod is arranged on the fixed plate and the side plate.

2. The bend connecting pipe fitting according to claim 1, characterized in that, a connecting sleeve is fixedly connected to each end of the bend pipe, one side of each of the two connecting sleeves is fixedly connected with one side of each of the two adjusting frames, and a top slot is arranged on the top of each of the two adjusting frames.

3. The bend connecting pipe fitting according to claim 1, characterized in that, a sliding block is fixedly connected to each of the two connecting pipes, and each of the four sliding blocks is slidably connected with the inner wall of each of the two adjusting frames through a sliding groove.

4. The bend connecting pipe fitting according to claim 1, characterized in that, a tension spring is sleeved on the upper part of each of the four support rods, the top end of the support rod is elastically connected with the top of the fixed plate through the tension spring, and the limiting slot on each of the four side plates is provided with a plurality of limiting slots.

5. The bend connecting pipe fitting according to claim 1, characterized in that, a fixing sleeve is sleeved on the connection between each of the two butt pipes and the two connecting pipes, and the fixing sleeve is detachably connected with the butt pipe and the connecting pipe.

6. The bend connecting pipe fitting according to claim 5, characterized in that, a threaded rod is arranged on both sides of the top of each of the two fixing sleeves, and a threaded slot for the threaded rod is arranged on the fixing sleeve, the butt pipe and the connecting pipe.

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