Auxiliary tool for preventing hard anodizing of diffuser screw hole

Abstract

The utility model belongs to the technical field of turbojet engine processing, and discloses an auxiliary tool for preventing hard anodizing of a diffuser screw hole, which comprises a high-hardness and acid-resistant baffle plate, and the baffle plate is attached and fixed on a diffuser; a plurality of through holes are formed in the baffle, the through holes correspond to screw holes in the diffuser, fixing bolts are rotationally connected into the through holes, and the fixing bolts are matched with the screw holes and are in threaded connection into the screw holes; the fixing bolt is sleeved with a sealing gasket, and the sealing gasket is supported between the baffle and the diffuser. The device is simple in structure and convenient to use, corresponding screw holes can be prevented from being insulated and hardened in the hardening process of the diffuser, follow-up treatment on the screw holes is avoided, the hardening treatment efficiency of the diffuser is improved, follow-up treatment on the screw holes is also avoided, damage to the screw holes is reduced, and the workload is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of turbojet engine processing, in particular to an auxiliary tool for preventing a screw hole of a diffuser from hard anodic oxidation. Background Art

[0002] The diffuser is a key component in a turbojet engine. Its main function is to adjust the intake resistance by changing the cross-sectional area of the intake duct to increase the intake pressure, thereby improving the engine's power output and combustion efficiency.

[0003] The diffuser needs to undergo hard anodizing before assembly to increase its surface hardness and insulate it. However, some of the diffuser's screw holes need to be used as ground wires, and the insulation treatment will affect its normal use.

[0004] The current common practice is to manually re-drill the screw holes after hardening to remove the surface oxide layer, but this increases the processing workload and may also damage the threads, affecting normal use; another existing practice is to use ordinary screws to block the screw holes to prevent the screw holes from being insulated; however, the screws secretly inserted in the screw holes are easily broken during the reaction in the hard anodizing process tank, and may be bent in the screw holes of the diffuser, causing the screw holes to be blocked and affecting use.

[0005] Therefore, the present application designs an auxiliary tool for preventing hard anodizing of expander screw holes to solve the above technical problems. Utility Model Content

[0006] In order to solve the above technical problems, the utility model proposes an auxiliary tool for preventing the hard anodizing of the screw holes of the expander.

[0007] To achieve the above-mentioned purpose, the utility model provides an auxiliary tool for preventing hard anodizing of screw holes of a compressor, comprising a baffle with high hardness and acid resistance, wherein the baffle is fixed on the compressor;

[0008] The baffle is provided with a plurality of through holes, the through holes being arranged corresponding to the screw holes on the expander, the through holes being rotatably connected with fixing bolts, the fixing bolts being adapted to the screw holes and being threadedly connected therein;

[0009] A sealing washer is sleeved on the fixing bolt, and the sealing washer is supported between the baffle and the diffuser.

[0010] Preferably, a plurality of supporting feet are provided on the side of the baffle facing the diffuser, and the plurality of supporting feet are arranged around the through hole. After the baffle is installed, the supporting feet are supported on the surface of the diffuser.

[0011] Preferably, the contact end of the supporting foot and the diffuser is contracted and configured to be an arc surface, thereby reducing damage to the diffuser.

[0012] Preferably, the fixing bolt includes a nut having an outer diameter larger than that of the through hole, and the nut abuts against an end of the baffle away from the diffuser; an extension rod adapted to the through hole is fixed to the nut, and the extension rod passes through the through hole and is threadedly connected to the screw hole.

[0013] Preferably, the extension rod is sleeved with a threaded section, the threaded section is adapted to the screw hole, the threaded section is threadedly connected in the screw hole, and the sealing gasket is sleeved on the threaded section.

[0014] Preferably, the length of the threaded section is smaller than the depth of the screw hole, and the distance between the threaded section and the nut is larger than the thickness of the baffle but smaller than the total thickness of the baffle and the sealing gasket.

[0015] Preferably, a plurality of blades are arranged at equal intervals on the diffuser, and the screw holes are opened on the end faces of the blades.

[0016] Compared with the prior art, the utility model has the following advantages and technical effects: the utility model discloses an auxiliary tool for preventing hard anodizing of the screw holes of a diffuser, which is a tooling for assisting the hard anodizing of the diffuser, and the baffle and fixing bolts do not react with the electricity and acid of the hard anodizing; when in use, the baffle is attached to the diffuser, the through hole is aligned with the screw hole of the diffuser, and then the baffle is pressed onto the diffuser by the acid-resistant and corrosion-resistant fixing bolts, and at the same time the fixing bolts are tightened into the screw hole and block the screw hole, and then the diffuser, baffle and fixing bolts are placed together in a hard anodizing tank for hardening reaction, thereby hardening the diffuser, and the baffle and fixing bolts can block sulfuric acid to prevent hard anodizing reaction from occurring in the blocked area, thereby avoiding insulation of the screw hole, and no subsequent re-drilling to remove the oxide layer is required, thereby avoiding increased workload and causing no damage to the screw hole. At the same time, it also avoids the hardening of the bolts caused by sealing the screw hole with conventional bolts, and prevents the hardened bolts from breaking in the screw hole and causing damage to the screw hole, thereby improving the hardening efficiency of the diffuser and ensuring the production quality of the diffuser.

[0017] The utility model has a simple structure and is easy to use. It can prevent the corresponding screw holes from being insulated and hardened during the hardening process of the diffuser, avoids subsequent processing of the screw holes, accelerates the hardening processing efficiency of the diffuser, avoids subsequent processing of the screw holes, reduces damage to the screw holes, and reduces workload. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings, which constitute part of this application, are intended to provide a further understanding of this application. The exemplary embodiments and descriptions of this application are intended to explain this application and do not constitute an improper limitation on this application. In the accompanying drawings:

[0019] Figure 1 A bottom view of the expansion cabinet equipped with a baffle according to the present invention;

[0020] Figure 2 This is an axial view of the expansion machine of the utility model;

[0021] Figure 3 This is an upward axial view of the baffle of the utility model;

[0022] Figure 4 This is a top-side axial view of the baffle of the utility model;

[0023] Figure 5 This is a schematic diagram of the fixing bolt of the utility model;

[0024] Figure 6 For this utility model Figure 5 A partial enlarged view of middle A;

[0025] In the figure: 1. Diffuser; 2. Screw hole; 3. Baffle; 4. Fixing bolt; 5. Support foot; 6. Nut; 7. Extension rod; 8. Threaded section; 9. Blade; 10. Sealing gasket. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0028] Reference Figures 1-6 As shown, this embodiment provides an auxiliary tool for preventing hard anodizing of the screw holes of a compressor, comprising a baffle 3 having high hardness and acid resistance, the baffle 3 being fixed on the compressor 1;

[0029] The baffle 3 is provided with a plurality of through holes 11, which are arranged corresponding to the screw holes 2 on the diffuser 1. The through holes 11 are rotatably connected with fixing bolts 4, which are adapted to the screw holes 2 and threadedly connected therein.

[0030] A sealing gasket 10 is sleeved on the fixing bolt 4 , and the sealing gasket 10 is supported between the baffle 3 and the diffuser 1 .

[0031] The utility model discloses an auxiliary tool for preventing the hard anodizing of the screw holes of a diffuser, which is a tool for assisting the diffuser 1 in hard anodizing. The baffle 3 and the fixing bolt 4 do not react with the electricity and acid of the hard anodizing. When in use, the baffle 3 is attached to the diffuser 1, the through hole 11 is aligned with the screw hole 2 of the diffuser 1, and then the baffle 3 is pressed onto the diffuser 1 through the acid-resistant and corrosion-resistant fixing bolt 4. At the same time, the fixing bolt 4 is tightened in the screw hole 2 and blocks the screw hole 2, and then the diffuser 1, the baffle 3 and the fixing bolt 4 are placed together. The diffuser 1 is hardened by the hard anodizing tank, and the baffle 3 and the fixing bolt 4 can block the sulfuric acid to prevent the hard anodizing reaction from occurring in the blocked area, thereby avoiding insulation of the screw hole 2. There is no need to subsequently re-drill to remove the oxide layer, thus avoiding increased workload and causing no damage to the screw hole 2. At the same time, it also avoids the hardening of the bolts caused by blocking the screw hole 2 with conventional bolts, and prevents the hardened bolts from breaking in the screw hole 2, thereby causing damage to the screw hole 2. This improves the hardening efficiency of the diffuser 1 and ensures the production quality of the diffuser 1. The utility model has a simple structure and is easy to use. It can prevent the corresponding screw hole 2 from being insulated and hardened during the hardening process of the diffuser 1, and also avoids subsequent processing of the screw hole 2, thereby accelerating the hardening processing efficiency of the diffuser 1, and also avoids subsequent processing of the screw hole 2, reducing damage to the screw hole 2 and reducing workload.

[0032] Furthermore, the baffle 3 and the fixing bolt 4 of this embodiment are made of ceramic material, which will not react with the acid and electricity of the anode hardening reaction.

[0033] Furthermore, in addition to being made of ceramic materials, the baffle 3 and the fixing bolts 4 of this embodiment can also be made of other acid-resistant and corrosion-resistant materials.

[0034] Furthermore, the sealing gasket 10 of this embodiment is made of a flexible corrosion-resistant material to ensure that it will not be affected by the hardening anode reaction of the diffuser 1, thereby avoiding corrosion.

[0035] Furthermore, the baffle 3 of this embodiment is designed to be an arc-shaped structure, the specifications of which are compatible with those stored in the diffuser 1, and can cover the area of the screw hole 2 that needs to be protected.

[0036] Furthermore, the baffle 3 of this embodiment can also be designed in a ring shape to cover all the screw holes 2 of the diffuser 1, and the fixing bolts 4 can be installed according to the screw holes 2 that need to be protected.

[0037] A further optimization solution features several support legs 5 on the side of the baffle 3 facing the diffuser 1. These legs 5 surround the through-holes 11. After the baffle 3 is installed, the legs 5 rest on the surface of the diffuser 1. The ends of the legs 5 that contact the diffuser 1 are curved and constricted, minimizing damage to the diffuser 1. The legs 5 on the baffle 3 are positioned on the diffuser 1, and the ends of the legs 5 that face the diffuser 1 are curved, minimizing damage to the diffuser 1 caused by sharp edges. The legs gradually contract, reducing the contact area between the legs 5 and the diffuser 1 and preventing excessively large non-hardened areas on the diffuser 1.

[0038] Furthermore, a flexible and corrosion-resistant contact pad is provided between the bottom end of the supporting foot 5 and the contact end of the diffuser 1 , thereby further improving the protection of the diffuser 1 .

[0039] In a further optimization, the fixing bolt 4 includes a nut 6 having an outer diameter greater than that of the through-hole 11. The nut 6 abuts the end of the baffle 3 facing away from the diffuser 1. An extension rod 7, compatible with the through-hole 11, is affixed to the nut 6. The extension rod 7 passes through the through-hole 11 and is threaded into the screw hole 2. The diameter of the nut 6 is greater than that of the through-hole 11. After installation, the nut 6 abuts the baffle 3. The end of the nut 6 facing away from the baffle 3 is provided with a hexagonal recess for easy operation. The extension rod 7 is affixed to the end of the nut 6 facing the baffle 3. The extension rod 7 passes through the through-hole 11 and is threaded into the screw hole 2. When tightened, the nut 6 presses the baffle 3 against the diffuser 1, tightening it, while the extension rod 7 simultaneously blocks the screw hole 2.

[0040] To further optimize the solution, a threaded section 8 is sleeved on the extension rod 7, the threaded section 8 is adapted to the screw hole 2, the threaded section 8 is threadedly connected in the screw hole 2, and the sealing gasket 10 is sleeved on the threaded section 8; the length of the threaded section 8 is less than the depth of the screw hole 2, and the distance between the threaded section 8 and the nut 6 is greater than the thickness of the baffle 3 but less than the total thickness of the baffle 3 and the sealing gasket 10. When the screw hole 2 is tightened, the threaded section 8 is tightened to prevent the threaded section 8 from contacting the baffle 3 and interfering with the through hole 11 of the baffle 3. When the screw hole 2 is tightened, the threaded section 8 is tightened to prevent the threaded section 8 from contacting the baffle 3 and interfering with the through hole 11 of the baffle 3. When the screw hole 2 is tightened, the threaded section 8 is clamped in the inner cavity of the sealing ring to position the sealing ring and prevent it from shaking. When the screw hole 2 is tightened, the nut 6 squeezes the baffle 3, so that the baffle 3 squeezes the sealing gasket 10, so that the sealing gasket 10 is deformed and intercepted outside the screw hole 2, so that the reacting acid cannot enter the gap between the threaded section 8 and the screw hole 2, further improving the protection of the screw hole 2 and avoiding insulation hardening in the screw hole 2.

[0041] In a further optimized solution, a plurality of blades 9 are evenly spaced on the diffuser 1, and screw holes 2 are provided on the end faces of the blades 9. In this embodiment, the diffuser 1 is provided with a plurality of blades 9, and screw holes 2 are provided on the blades 9. When in use, the support legs 5 are supported on the end faces of the blades 9.

[0042] Furthermore, this embodiment can also be applied to a diffuser 1 without blades 9 .

[0043] In the description of the present invention, it should be understood that the terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the present invention.

[0044] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Without departing from the spirit of the present invention, various modifications and improvements to the technical solutions of the present invention made by ordinary technicians in this field should fall within the scope of protection determined by the claims of the present invention.

Claims

1. A tool for preventing hard anodizing of screw holes in a compressor, characterized by: It comprises a baffle (3) with high hardness and acid resistance, wherein the baffle (3) is fixedly attached to the diffuser (1); The baffle (3) is provided with a plurality of through holes (11), the through holes (11) being arranged corresponding to the screw holes (2) on the diffuser (1), and the through holes (11) are rotatably connected with fixing bolts (4), and the fixing bolts (4) are adapted to the screw holes (2) and are threadedly connected to the screw holes (2); A sealing gasket (10) is sleeved on the fixing bolt (4), and the sealing gasket (10) is supported between the baffle (3) and the diffuser (1).

2. The auxiliary tool for preventing hard anodizing of expander screw holes according to claim 1, characterized in that: A plurality of supporting feet (5) are provided on the side of the baffle (3) facing the diffuser (1), and the plurality of supporting feet (5) are arranged around the through hole (11). After the baffle (3) is installed, the supporting feet (5) are supported on the surface of the diffuser (1).

3. The auxiliary tool for preventing hard anodizing of expander screw holes according to claim 2, characterized in that: The contact end of the supporting foot (5) and the diffuser (1) is contracted and configured to form an arc surface, thereby reducing damage to the diffuser (1).

4. The auxiliary tool for preventing hard anodizing of expander screw holes according to claim 1, characterized in that: The fixing bolt (4) includes a nut (6) having an outer diameter greater than that of the through hole (11), and the nut (6) abuts against an end of the baffle (3) away from the diffuser (1); an extension rod (7) adapted to the through hole (11) is fixed to the nut (6), and the extension rod (7) passes through the through hole (11) and is threadedly connected to the screw hole (2).

5. The auxiliary tool for preventing hard anodizing of expander screw holes according to claim 4, characterized in that: The extension rod (7) is sleeved with a threaded section (8), the threaded section (8) is adapted to the screw hole (2), the threaded section (8) is threadedly connected in the screw hole (2), and the sealing gasket (10) is sleeved on the threaded section (8).

6. The auxiliary tool for preventing hard anodizing of expander screw holes according to claim 5, characterized in that: The length of the threaded section (8) is less than the depth of the screw hole (2), and the distance between the threaded section (8) and the nut (6) is greater than the thickness of the baffle (3) but less than the total thickness of the baffle (3) and the sealing gasket (10).

7. The auxiliary tool for preventing hard anodizing of expander screw holes according to claim 1, characterized in that: A plurality of blades (9) are arranged at equal intervals on the diffuser (1), and the screw holes (2) are opened on the end surfaces of the blades (9).

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