Intake pipe connection structure

Abstract

The application relates to an air inlet pipeline connecting structure, which comprises a shell, a mounting pipe arranged on the shell and integrally formed, a curved terminal joint provided with a middle hole and welded with the upper end of the mounting pipe, a valve piece assembly arranged in the inner hole of the mounting pipe and provided with a valve piece, a mounting hole arranged at the lower end of the curved terminal joint and communicated with the lower end of the middle hole, and a vent plate arranged in the mounting hole and connected with the curved terminal joint. The inner hole of the mounting pipe is communicated with the inner cavity of the shell. The air inlet pipeline connecting structure has good sealing performance, is not prone to leakage during use, and has a long service life.

Description

Technical Field

[0001] This invention relates to the field of automotive parts technology, and in particular to an intake pipe connection structure. Background Technology

[0002] The intake system of a gas turbine engine includes an air intake pipe and a gas intake pipe. The air intake pipe is equipped with multiple sets of intake pipes and intake manifolds for providing air-fuel mixture to each cylinder of the engine. The structure of the intake pipe can be understood from an engine intake pipe and engine disclosed in Chinese Patent Application No. CN202210814315.4. The connector at one end of the intake pipe is welded to the engine housing, which has the disadvantages of poor sealing, easy leakage during use, and short service life. Therefore, designing an intake pipe connection structure with better sealing, less prone to leakage during use, and longer service life has become an urgent problem to be solved. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide an intake pipe connection structure with better sealing performance, less prone to leakage during use, and longer service life.

[0004] The specific technical solution of this invention is as follows:

[0005] An intake pipe connection structure includes: a housing, an integrally formed mounting pipe disposed on the housing, a curved end connector with a central hole and its lower end welded to the upper end of the mounting pipe, a valve plate assembly installed in the inner hole of the mounting pipe and having a valve plate, a mounting hole disposed at the lower end of the curved end connector and communicating with the lower end of the central hole, and a vent plate installed in the mounting hole and connected to the curved end connector; the inner hole of the mounting pipe communicates with the inner cavity of the housing.

[0006] Preferably, the valve plate assembly includes: a support column, a guide column whose lower end is connected to the upper end of the support column, a guide hole disposed on the valve plate and sleeved outside the guide column, and multiple connecting plates whose inner ends are respectively connected to the side wall of the support column; the outer end of the connecting plate is connected to the inner wall of the mounting tube.

[0007] Preferably, the vent plate includes: a fixing ring installed in the mounting hole and welded to the end joint; a central column with a recessed hole at its lower end that is fitted around the upper end of the guide post; and honeycomb plate rings welded to the inner side of the fixing ring and the outer side of the central column, respectively; the inner diameter of the fixing ring is smaller than the outer diameter of the valve plate.

[0008] Preferably, an elastic washer is provided between the fixing ring and the valve plate, and the side of the elastic washer is provided with an air passage group; the upper end of the elastic washer is connected to the lower end of the fixing ring, and the lower end of the elastic washer presses against the upper end of the valve plate.

[0009] Preferably, the honeycomb plate ring is a stepped shape with the small end on the upper side.

[0010] Preferably, the lower end of the valve plate is provided with a frustoconical hole that connects the small end to the lower end of the guide hole; the upper end of the support column is provided with a frustoconical surface that matches the frustoconical hole.

[0011] Preferably, a sealing ring is provided between the upper end of the mounting pipe and the lower end of the terminal joint.

[0012] Preferably, the upper end of the mounting tube is provided with a positioning ring groove that communicates with the inner side, and the lower end of the curved end joint is provided with a positioning protrusion that is inserted into the positioning ring groove; the outer diameter of the positioning protrusion is adapted to the inner diameter of the positioning ring groove.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: In the intake pipe connection structure, one end of the intake pipe is inserted into the central hole and connected to the end cap; the mounting pipe is integrally formed on the housing, with a positioning ring groove at the upper end of the mounting pipe communicating with the inner side, and a positioning protrusion at the lower end of the end cap inserted into the positioning ring groove; a sealing ring is provided between the upper end of the mounting pipe and the lower end of the end cap; the lower end of the end cap is welded to the upper end of the mounting pipe to improve the sealing effect; the vent plate is installed in the mounting hole and welded to the end cap; the lower end of the elastic washer presses against the upper end of the valve plate; the air intake of the intake pipe is depressurized through the cooperation of the vent plate and the valve plate, resulting in good sealing performance, less leakage during use, and a longer service life. An elastic washer is provided between the fixing ring and the valve plate, with the lower end of the elastic washer pressing against the upper end of the valve plate; the side of the elastic washer is provided with a group of vent holes for ventilation; when the ventilation volume is large, the valve plate opens to allow ventilation. The guide hole on the valve plate is fitted over the guide post. The lower end of the valve plate has a frustoconical hole with its small end communicating with the lower end of the guide hole. The upper end of the support post has a frustoconical surface that matches the frustoconical hole, facilitating valve plate opening. The honeycomb plate ring is welded to the inner side of the fixing ring and the outer side of the central post. The honeycomb plate ring is stepped with its small end on the upper side, which helps to improve the strength and rigidity of the vent plate, making it less prone to deformation and damage when the fixing ring is installed in the mounting hole and welded to the end joint. The lower end of the central post has a countersunk hole that fits over the upper end of the guide post, which helps to reduce the height dimension. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of an exploded structure of the present invention;

[0015] Figure 2 This is a cross-sectional schematic diagram of the present invention.

[0016] In the diagram: 1. Housing; 2. Mounting tube; 3. Central hole; 4. End joint; 5. Valve plate; 6. Mounting hole; 7. Support column; 8. Guide column; 9. Guide hole; 10. Connecting plate; 11. Fixing ring; 12. Accommodating countersunk hole; 13. Central column; 14. Honeycomb plate ring; 15. Elastic washer; 16. Vent hole assembly; 17. Frustum-shaped hole; 18. Frustum-shaped surface; 19. Sealing ring; 20. Positioning ring groove; 21. Positioning convex ring. Detailed Implementation

[0017] The present invention will now be further described with reference to the accompanying drawings.

[0018] As attached Figure 1 Appendix Figure 2 As shown: An intake pipe connection structure includes: a housing 1, an installation pipe 2 integrally formed on the housing 1, a terminal joint 4 having a central hole 3 and its lower end welded to the upper end of the installation pipe 2, a valve plate assembly having a valve plate 5 installed in the inner hole of the installation pipe 2, an installation hole 6 located at the lower end of the terminal joint 4 and communicating with the lower end of the central hole 3, and a vent plate installed in the installation hole 6 and connected to the terminal joint 4; the inner hole of the installation pipe 2 communicates with the inner cavity of the housing 1.

[0019] The valve plate assembly includes: a support column 7, a guide column 8 whose lower end is connected to the upper end of the support column 7, a guide hole 9 disposed on the valve plate 5 and sleeved on the guide column 8, and a connecting plate 10 whose three inner ends are respectively welded to the side wall of the support column 7; the outer end of the connecting plate 10 is welded to the inner wall of the mounting pipe 2.

[0020] The vent plate includes: a fixing ring 11 installed in the mounting hole 6 and welded to the end joint 4; a central column 13 with a recessed hole 12 fitted at the lower end of the guide post 8; and a honeycomb plate ring 14 welded to the inner side of the fixing ring 11 and the outer side of the central column 13 respectively; the inner diameter of the fixing ring 11 is smaller than the outer diameter of the valve plate 5.

[0021] An elastic washer 15 is provided between the fixing ring 11 and the valve plate 5. The elastic washer 15 has a group of air holes 16 on its side. The upper end of the elastic washer 15 is bonded to the lower end of the fixing ring 11, and the lower end of the elastic washer 15 presses against the upper end of the valve plate 5. The elastic washer 15 is made of rubber.

[0022] The honeycomb plate ring 14 is a stepped shape with the small end on the upper side.

[0023] The valve plate 5 has a frustoconical hole 17 at its lower end, which is connected to the lower end of the guide hole 9; the support column 7 has a frustoconical surface 18 at its upper end that is adapted to the frustoconical hole.

[0024] A sealing ring 19 is provided between the upper end of the mounting pipe 2 and the lower end of the terminal joint 4. The sealing ring 19 is made of rubber.

[0025] The upper end of the mounting pipe 2 is provided with a positioning ring groove 20 that communicates with the inner side, and the lower end of the curved end joint 4 is provided with a positioning protrusion 21 that is inserted into the positioning ring groove 20; the outer diameter of the positioning protrusion 21 is transitionally fitted with the inner diameter of the positioning ring groove 20.

[0026] In addition to the embodiments described above, within the scope disclosed in the claims and specification of this invention, the technical features or technical data of this invention can be reselected and combined to form new embodiments. These can be achieved by those skilled in the art without creative effort. Therefore, these embodiments not described in detail in this invention should also be regarded as specific embodiments of this invention and within the protection scope of this invention.

Claims

1. An air intake plumbing connection structure, comprising: The shell is characterized in that the air inlet pipeline connecting structure further comprises: a mounting pipe provided on the shell and integrally formed; a terminal joint provided with a middle hole and welded with the lower end of the mounting pipe; a valve plate assembly provided in the inner hole of the mounting pipe and provided with a valve plate; a mounting hole provided at the lower end of the terminal joint and communicated with the lower end of the middle hole; and a vent plate provided in the mounting hole and connected with the terminal joint; the inner hole of the mounting pipe is communicated with the inner cavity of the shell; the valve plate assembly comprises: a support, a guide column connected with the upper end of the support, a guide hole provided on the valve plate and sleeved on the outside of the guide column, and a plurality of connecting plates with inner ends connected with the side wall of the support; the outer end of the connecting plate is connected with the side wall of the inner hole of the mounting pipe; the vent plate comprises: a fixed ring provided in the mounting hole and welded with the terminal joint, a middle column provided with a containing recess on the lower end and sleeved on the upper end of the guide column, and a honeycomb plate ring welded with the inner side wall of the fixed ring and the outer side wall of the middle column; an elastic washer is provided between the fixed ring and the valve plate, the side wall of the elastic washer is provided with a gas passing hole group; the upper end of the elastic washer is connected with the lower end of the fixed ring, and the lower end of the elastic washer presses the upper end of the valve plate.

2. The intake-pipe connecting structure according to claim 1, characterized by The inner diameter of the fixed ring is smaller than the outer diameter of the valve plate.

3. The intake-pipe connecting structure according to claim 1 or 2, characterized by The shape of the honeycomb plate ring is a stepped shape with the small end located on the upper side.

4. The intake-pipe connecting structure according to claim 1 or 2, characterized by The lower end of the valve plate is provided with a conical frustum hole communicated with the lower end of the guide hole; the upper end of the support is provided with a conical frustum surface matched with the conical frustum hole.

5. The intake-pipe connecting structure according to claim 1 or 2, characterized by A sealing ring is provided between the upper end of the mounting pipe and the lower end of the terminal joint.

6. The intake-pipe connecting structure according to claim 1 or 2, characterized by The upper end of the mounting pipe is provided with a positioning ring groove communicated with the inner side wall, and the lower end of the terminal joint is provided with a positioning convex ring inserted into the positioning ring groove.

7. The intake-pipe connection structure according to claim 6, characterized by The outer diameter of the positioning convex ring is matched with the inner diameter of the positioning ring groove.

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