Connecting flange for internal combustion engine

Abstract

The utility model relates to the technical field of internal combustion engine connecting pieces, in particular to a connecting flange for an internal combustion engine, which comprises an internal combustion engine pipeline, a counter flange and connecting flange main bodies, limiting parts are fixedly mounted on the inner sides of the two connecting flange main bodies, and flange wear-resistant layer sleeving structures are arranged on the outer sides of the connecting flange main bodies. And a flange mounting structure is arranged on the inner side of the counter flange. According to the connecting flange for the internal combustion engine, after the connecting flange body is installed, wear-resistant rings prefabricated in advance can be hooped on the outer wall of the connecting flange body up and down, then studs penetrate into the two extension plates, and installation of the semi-arc-shaped wear-resistant rings is achieved through the extrusion force of locking nuts towards the middle; in this way, the wear-resisting ring can be directly mounted and dismounted on the outer side of the connecting flange body, the wear-resisting ring does not need to be pulled out from the end portion, and the wear-resisting ring can be dismounted without dismounting an internal combustion engine pipeline at the end portion in advance.

Description

Technical Field

[0001] This utility model relates to the technical field of internal combustion engine connecting parts, specifically a connecting flange for internal combustion engines. Background Technology

[0002] An internal combustion engine is an energy conversion device that converts the heat energy released from fuel combustion into mechanical energy. Since its invention, the internal combustion engine has undergone countless improvements and enhancements. Modern internal combustion engines are quite perfect in terms of both structure and performance, and have become the most widely used and extensive thermal power machinery today. The connecting flange is an important component of the internal combustion engine, and its development has also been very rapid.

[0003] For example, the authorization announcement number "CN209687628U" is named a connecting flange for internal combustion engines. The outer wear-resistant sleeve is made of one or more of ceramic, wear-resistant alloy steel, or hard alloy. This structural design can improve the wear resistance of the connecting flange. However, existing connecting flanges for internal combustion engines require bolts and other components to be installed at the ends of pipes or parts of the internal combustion engine to complete the docking function. However, the connecting flange for internal combustion engines uses a wear-resistant layer fitted above the lower limit part for protection. Due to the diameter limitation, the wear-resistant layer can only be inserted into the relatively narrow upper limit part. Therefore, when the wear-resistant layer needs to be removed, it can only be pulled out in one direction from the top. This directly affects the disassembly and installation of the wear-resistant layer of the connecting flange, which is very restrictive. Utility Model Content

[0004] The purpose of this utility model is to solve the problem that the disassembly and installation of existing connecting flanges for internal combustion engines are easily restricted, and to propose a connecting flange for internal combustion engines.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] Design a connecting flange for an internal combustion engine, including an internal combustion engine pipeline, a docking flange, and a connecting flange body. Two connecting flange bodies are movably installed inside two docking flanges. The other ends of the two docking flanges are fixedly connected to an internal combustion engine pipeline. Limiting parts are fixedly installed inside the two connecting flange bodies. A flange wear-resistant layer sleeve structure is provided on the outer side of the connecting flange body. A multi-stage mounting structure for the internal combustion engine flange is provided inside the limiting part. A flange mounting structure is provided inside the docking flange.

[0007] Preferably, the flange wear-resistant layer sleeve structure includes wear-resistant rings and extension plates. Two wear-resistant rings are movably sleeved on both sides of the outer wall of the connecting flange body. A compression layer is fixedly connected to the inner wall of the two wear-resistant rings. Multiple extension plates are fixedly connected to the edge sidewall of the wear-resistant rings. Double-ended bolts are threaded into the internal threads of the multiple extension plates. Locking nuts are threaded into both ends of the double-ended bolts.

[0008] Preferably, the two clamping layers abut against the outer wall of the limiting portion.

[0009] Preferably, the multi-stage mounting structure of the internal combustion engine flange includes a connecting sleeve and flange convex shafts. The connecting sleeve is movably connected to the inner side of two limiting parts, and the two flange convex shafts are fixedly connected to the ends of the limiting parts. The interior of the two flange convex shafts is fixedly provided with through cavities. The inner wall of the connecting sleeve is fixedly connected with a threaded groove, and the outer wall of the two flange convex shafts is threadedly connected to the inner side of the threaded groove.

[0010] Preferably, the flange mounting structure includes sealing gaskets and mounting bolts, two sealing gaskets are fixedly connected to the inner wall of the connecting flange body, and multiple mounting bolts are threadedly connected to the inner side of the connecting flange body, with fixing nuts threaded to the ends of the multiple mounting bolts.

[0011] Preferably, the other side of the two sealing gaskets is movably sleeved with the side wall of the limiting part, and the front end of the sealing gasket is arranged opposite to the two sides of the wear-resistant ring.

[0012] The present invention provides a connecting flange for an internal combustion engine, which has the following advantages: After the connecting flange body is installed, pre-made wear-resistant rings can be clamped onto the outer wall of the connecting flange body, one above the other, until the side walls of the extension plates extending from both sides are fitted together. Then, double-headed bolts are inserted into the two extension plates, and the semi-arc-shaped wear-resistant ring is installed by using the squeezing force of the lock nut towards the middle. When disassembling, simply rotate the lock nut in the opposite direction to unscrew it. In this way, the installation and removal of the wear-resistant ring can be carried out directly on the outside of the connecting flange body, without having to pull it out at the end or disassemble the internal combustion engine pipeline at the end in advance. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0014] Figure 2 for Figure 1 A frontal sectional view;

[0015] Figure 3 for Figure 1 A side sectional view;

[0016] Figure 4 for Figure 2 Enlarged sectional view of section A in the middle;

[0017] Figure 5 for Figure 2 Enlarged sectional view of section B in the middle;

[0018] Figure 6 for Figure 2 Enlarged sectional view of section C.

[0019] In the diagram: 1. Internal combustion engine pipeline; 2. Connecting flange; 3. Connecting flange body; 4. Limiting part; 5. Flange mounting structure; 51. Sealing gasket; 52. Mounting bolt; 53. Fixing nut; 6. Multi-stage mounting structure of internal combustion engine flange; 61. Connecting sleeve; 62. Through cavity; 63. Flange convex shaft; 64. Threaded groove; 7. Flange wear-resistant layer sleeve structure; 71. Wear-resistant ring; 72. Compression layer; 73. Extension plate; 74. Double-ended bolt; 75. Locking nut. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings:

[0021] Example 1: Please refer to Figure 1-6 In this embodiment, a connecting flange for an internal combustion engine includes an internal combustion engine pipe 1, a docking flange 2, and a connecting flange body 3. Two connecting flange bodies 3 are movably installed inside the two docking flanges 2. Both ends of the two connecting flange bodies 3 are fitted together with the docking flanges 2, while the other ends of the two docking flanges 2 are connected to the internal combustion engine pipe 1 of the internal combustion engine equipment. In this way, the connecting flange bodies 3 in the middle can achieve the effect of connecting two internal combustion engine pipes 1 together. The other ends of the two docking flanges 2 are fixedly connected to the internal combustion engine pipe 1. A limiting part 4 is fixedly installed inside the two connecting flange bodies 3. The limiting part 4 protrudes inside the connecting flange body 3 and is made of stainless steel metal material with a diameter smaller than that of the connecting flange body 3. The limiting part 4 facilitates the docking and limiting of the flange. A flange wear-resistant layer sleeve structure 7 is provided on the outer side of the connecting flange body 3, and a multi-stage mounting structure 6 for the internal combustion engine flange is provided on the inner side of the limiting part 4. A flange mounting structure 5 is provided on the inner side of the docking flange 2.

[0022] The flange wear-resistant layer sleeve structure 7 includes wear-resistant rings 71 and extension plates 73. Two wear-resistant rings 71 are movably sleeved on both sides of the outer wall of the connecting flange body 3. The wear-resistant rings 71 are two semi-circular metal arc plates made of wear-resistant alloy steel. A clamping layer 72, made of epoxy resin, is fixedly connected to the inner wall of the two wear-resistant rings 71. After the connecting flange body 3 is installed, the pre-made wear-resistant rings 71 can be clamped onto the outer wall of the connecting flange body 3, one above the other, until the side walls of the extension plates 73 on both sides are fitted together. Then, double-ended bolts 74 are inserted into the two extension plates 73. Made by using a threaded rod with opposite threaded grooves at both ends, the two opposite ends of the double-ended bolt 74 can be rotated and screwed into two different locking nuts 75. The semi-circular wear-resistant ring 71 is installed by using the squeezing force of the locking nuts 75 towards the middle. Similarly, when disassembling the semi-circular wear-resistant ring 71, simply rotate the locking nuts 75 in the opposite direction to unscrew them. Multiple extension plates 73 are fixedly connected to the edge sidewall of the wear-resistant ring 71. The internal threads of the multiple extension plates 73 are connected to the double-ended bolts 74. The two ends of the double-ended bolts 74 are connected to the locking nuts 75. The two clamping layers 72 are pressed against the outer wall of the limiting part 4.

[0023] The multi-stage mounting structure 6 for internal combustion engine flanges includes a connecting sleeve 61 and flange cams 63. The connecting sleeve 61 is movably connected to the inner side of two limiting parts 4 and is used to tightly fix the limiting parts 4 together. The two flange cams 63 are fixedly connected to the ends of the limiting parts 4. The outer side of the flange cams 63 is provided with a structure that can be rotatably threadedly connected to the internal threaded groove 64 of the connecting sleeve 61. Therefore, first fix one side of the limiting part 4, then rotate the flange cam 63 and tighten it with the connecting sleeve 61, and then rotate and screw the flange cam 63 at the other end to the other end of the connecting sleeve 61. The through cavity 62 between the two flange cams 63 is connected by the hollow inside the connecting sleeve 61, which completes the installation process of the internal combustion engine flange. The through cavity 62 is fixedly opened inside the two flange cams 63, and the inner wall of the connecting sleeve 61 is fixedly connected with the threaded groove 64. The outer wall of the two flange cams 63 is threadedly connected to the inner side of the threaded groove 64.

[0024] The flange mounting structure 5 includes sealing gaskets 51 and mounting bolts 52. Two sealing gaskets 51 are fixedly connected to the inner wall of the connecting flange body 3. The sealing gaskets 51 are made of rubber material and are clamped between the connecting flange body 3 and the limiting part 4 to reduce water and air leakage at the mating position. Multiple mounting bolts 52 are threadedly connected to the inner side of the connecting flange body 3. Multiple mounting bolts 52 are provided. The mounting bolts 52 are inserted between the connecting flange body 3 and the outer mating flange 2. The ends of the mounting bolts 52 are screwed into the fixing nuts 53 for fixation, thus realizing the mating operation between the flanges. The ends of the multiple mounting bolts 52 are threadedly connected to the fixing nuts 53. The other side of the two sealing gaskets 51 is movably sleeved with the side wall of the limiting part 4. The front end of the sealing gaskets 51 is set opposite to the two sides of the wear-resistant ring 71.

[0025] Working principle:

[0026] Internal combustion engine connecting flanges are used in internal combustion engines to connect and fix internal combustion engine pipelines or equipment that requires a sealed connection.

[0027] The two ends of the two connecting flange bodies 3 are fitted together with the docking flanges 2, while the other end of the two docking flanges 2 is connected to the internal combustion engine pipeline 1 of the internal combustion engine equipment. In this way, the two internal combustion engine pipelines 1 can be connected together through the middle connecting flange body 3. The limiting part 4 is set inside the connecting flange body 3. The limiting part 4 is made of stainless steel metal material with a diameter smaller than that of the connecting flange body 3. The limiting part 4 facilitates the docking and limiting of the flange.

[0028] The wear-resistant rings 71 are made of two semi-circular metal arc plates made of wear-resistant alloy steel. A clamping layer 72, made of epoxy resin, is fixedly connected to the inner wall of the two wear-resistant rings 71. After the connecting flange body 3 is installed, the pre-made wear-resistant rings 71 can be clamped one above the other onto the outer wall of the connecting flange body 3 until the side walls of the extension plates 73 on both sides are fitted together. Then, double-ended bolts 74 are inserted into the two extension plates 73. The double-ended bolts 74 are threaded rods with opposite ends. The threaded groove allows the two opposite ends of the double-ended bolt 74 to be rotated and screwed into two different locking nuts 75. The semi-circular wear-resistant ring 71 is installed by using the squeezing force of the locking nuts 75 towards the middle. Similarly, when disassembling the semi-circular wear-resistant ring 71, simply rotate the locking nuts 75 in the opposite direction to unscrew them. In this way, the installation and removal of the wear-resistant ring 71 can be carried out directly on the outside of the connecting flange body without having to pull it out at the end or disassemble the internal combustion engine pipe at the end in advance.

[0029] The connecting sleeve 61 is used to tightly fix the limiting part 4 together. Two flange convex shafts 63 are fixedly connected to the ends of the limiting part 4. The outer side of the flange convex shaft 63 is provided with a structure that can be rotatably threaded to the internal thread groove 64 of the connecting sleeve 61. Therefore, first fix one side of the limiting part 4, then rotate the flange convex shaft 63 and tighten it with the connecting sleeve 61, and then rotate the flange convex shaft 63 at the other end and screw it onto the other end of the connecting sleeve 61. The through cavity 62 between the two flange convex shafts 63 is connected by the hollow inside the connecting sleeve 61, which completes the installation process of the internal combustion engine flange.

[0030] The sealing gasket 51 is made of rubber material. The sealing gasket 51 is clamped between the connecting flange body 3 and the limiting part 4, which can reduce the occurrence of water and air leakage at the docking position. There are multiple mounting bolts 52. The mounting bolts 52 are inserted between the connecting flange body 3 and the outer docking flange 2. Then, the end of the mounting bolt 52 is screwed into the fixing nut 53 for fixation, which can realize the docking operation between the flanges.

[0031] Although the present invention has been illustrated and described with reference to preferred embodiments, those skilled in the art should understand that various changes in form and detail are possible within the scope of the claims.

Claims

1. A connecting flange for an internal combustion engine, comprising an internal combustion engine pipe (1), a docking flange (2), and a connecting flange body (3), wherein two connecting flange bodies (3) are movably installed inside two docking flanges (2), and the other end of the two docking flanges (2) is fixedly connected to an internal combustion engine pipe (1), characterized in that: The inner sides of the two connecting flange bodies (3) are fixedly installed with limiting parts (4), the outer sides of the connecting flange bodies (3) are provided with flange wear-resistant layer sleeve structure (7), the inner sides of the limiting parts (4) are provided with internal combustion engine flange multi-stage installation structure (6), and the inner sides of the docking flange (2) are provided with flange installation structure (5).

2. The connecting flange for an internal combustion engine according to claim 1, characterized in that: The flange wear-resistant layer sleeve structure (7) includes wear-resistant rings (71) and extension plates (73). Two wear-resistant rings (71) are movably sleeved on both sides of the outer wall of the connecting flange body (3). A compression layer (72) is fixedly connected to the inner wall of the two wear-resistant rings (71). Multiple extension plates (73) are fixedly connected to the edge sidewall of the wear-resistant rings (71). Double-ended bolts (74) are threaded inside the multiple extension plates (73). Locking nuts (75) are threaded at both ends of the double-ended bolts (74).

3. The connecting flange for an internal combustion engine according to claim 2, characterized in that: The two clamping layers (72) abut against the outer wall of the limiting part (4).

4. The connecting flange for an internal combustion engine according to claim 1, characterized in that: The multi-stage mounting structure (6) of the internal combustion engine flange includes a connecting sleeve (61) and a flange cam (63). The connecting sleeve (61) is movably connected to the inner side of two limiting parts (4). The two flange cams (63) are fixedly connected to the ends of the limiting parts (4). A through cavity (62) is fixedly opened inside the two flange cams (63). A threaded groove (64) is fixedly connected to the inner wall of the connecting sleeve (61). The outer wall of the two flange cams (63) is threadedly connected to the inner side of the threaded groove (64).

5. The connecting flange for an internal combustion engine according to claim 1, characterized in that: The flange mounting structure (5) includes a sealing gasket (51) and mounting bolts (52). Two sealing gaskets (51) are fixedly connected to the inner wall of the connecting flange body (3). Multiple mounting bolts (52) are threadedly connected to the inner side of the connecting flange body (3). The ends of multiple mounting bolts (52) are threadedly connected to fixing nuts (53).

6. The connecting flange for an internal combustion engine according to claim 5, characterized in that: The other side of the two sealing gaskets (51) is movably sleeved with the side wall of the limiting part (4), and the front end of the sealing gasket (51) is arranged opposite to the two sides of the wear-resistant ring (71).

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