Sealing ring for impeller of air blower

Abstract

The utility model relates to the technical field of sealing rings, and provides an air blower impeller sealing ring which comprises a first sealing piece and a second sealing piece which are of a semicircular structure. The two ends of the first sealing piece make contact with the two ends of the second sealing piece correspondingly, so that the first sealing piece and the second sealing piece are buckled to form an annular ring, the two buckling positions are connected through locating pins, locating holes are formed in the end faces of the buckling positions, and the locating holes are matched with the locating pins. And the two ends of the positioning pin are respectively inserted into the corresponding positioning holes to position and lock the first sealing element and the second sealing element. The device has the beneficial effects that the problem of machining deformation caused by the characteristics of stainless steel materials can be obviously reduced, and the method allows the two semicircular parts to be more accurately adjusted and aligned after rough machining, so that the size required by a drawing can be achieved in a finish machining stage, and the machining efficiency is improved. Therefore, the machining precision and the qualified rate of products are improved, and the conditions of repair and scrapping caused by unqualified sizes are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of sealing rings, and in particular to a sealing ring for a blower impeller. Background Art

[0002] A blower is a device that generates airflow and transports it through a pressure differential. It is widely used in various industrial fields. Its primary function is the eccentric rotation of its rotor. The rotor is offset within the cylinder, and its rotation changes the volume between the blades in the rotor slots, thereby drawing in, compressing, and expelling air. During operation, the blower uses its own pressure differential to automatically deliver lubricating oil to the drip nozzle, where it drips into the cylinder to reduce friction and noise while preventing backflow of gas inside the cylinder.

[0003] The impeller inlet seal of a multi-stage centrifugal blower is made of different materials according to different working conditions. When the impeller inlet seal is a stainless steel semi-circular structure, due to the characteristics of stainless steel, the impeller inlet seal often deforms, resulting in unqualified dimensions. At this time, it needs to be repaired before it can be used. If the deformation is serious, it may even be unusable. Utility Model Content

[0004] The utility model proposes a blower impeller sealing ring, which is formed by fastening a first sealing part and a second sealing part, and is positioned by a positioning hole and a positioning pin during the final synthesis, thereby significantly reducing the processing deformation problem of the one-piece molded sealing ring caused by the characteristics of stainless steel materials.

[0005] To this end, the technical solutions adopted are as follows:

[0006] A blower impeller sealing ring includes a first seal and a second seal in a semicircular structure; the two ends of the first seal and the two ends of the second seal are in corresponding contact, so that the first seal and the second seal are buckled together to form an annular ring, and the two buckling parts are connected by a positioning pin, and positioning holes are provided on the end faces of the buckling parts. The two ends of the positioning pin are respectively inserted into the corresponding positioning holes to position and lock the first seal and the second seal.

[0007] A further technical solution is that the fastening portion of the first sealing member and the second sealing member further includes a connecting member, and both ends of the connecting member are respectively clamped and fixed to the first sealing member and the second sealing member.

[0008] A further technical solution is that there are two connecting pieces at each fastening point, and the two connecting pieces are relatively fixed on the two flat end surfaces at the fastening point of the first sealing member and the second sealing member.

[0009] A further technical solution is that the outer surfaces of the two connecting pieces at each buckling location after being snapped and locked are consistent in height with the flat end surfaces on which they are located.

[0010] A further technical solution is that the connecting piece is an N-shaped structure, including insertion protrusions on both sides and a snap-on groove in the middle, and two connecting grooves matching the insertion protrusions are provided on the flat end surface of each of the snap-fitting parts, and the two connecting grooves are respectively located on the first seal and the second seal, and when the two insertion protrusions are respectively inserted into the two connecting grooves, the first seal, the second seal and the connecting piece are locked.

[0011] A further technical solution is that the engaging groove is a trapezoidal groove.

[0012] A further technical solution is that a pair of reserved grooves are provided on the end surface of the insertion protrusion opposite to the insertion end.

[0013] A further technical solution is that sealing gaskets are fitted and fixed on the end surfaces of the two buckled parts.

[0014] A further technical solution is that the outer edges of the first seal and the second seal are fixed with snap-fitting half rings distributed along the outer edge tracks, and the two snap-fitting half rings are buckled with the first seal and the second seal to form a complete snap-fitting ring.

[0015] The working principle and beneficial effects of this application are:

[0016] The sealing ring is formed by buckling the first sealing part and the second sealing part, and is positioned by positioning holes and positioning pins during the final synthesis, which can significantly reduce the processing deformation problem of the one-piece molded sealing ring caused by the characteristics of stainless steel materials. This method allows for more precise adjustment and alignment of the two semicircular parts after rough processing, thereby ensuring that the dimensions required by the drawing can be achieved during the fine processing stage. This improves the processing accuracy and the product qualification rate, and reduces the rework and scrap caused by unqualified dimensions. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present application will be further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0018] Figure 1 This is the first overall structural diagram of this application;

[0019] Figure 2 This is a second overall structural diagram of the present application;

[0020] Figure 3 This is a schematic diagram of the explosion structure of this application;

[0021] Figure 4 For this application Figure 3 A in the middle is an enlarged structural diagram;

[0022] Figure 5This is a schematic structural diagram of the connecting member described in this application.

[0023] In the figure: 1. First sealing member; 2. Second sealing member; 3. Connecting member; 31. Inserting protrusion; 32. Snap-fitting groove; 33. Reserved groove; 4. Positioning pin; 5. Positioning hole; 6. Connecting groove; 7. Sealing gasket; 8. Snap-fitting half ring. DETAILED DESCRIPTION

[0024] The following will be combined with 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.

[0025] Example 1:

[0026] like Figures 1-4 As shown, a blower impeller sealing ring includes a first sealing member 1 and a second sealing member 2 in a semicircular structure; the two ends of the first sealing member 1 and the two ends of the second sealing member 2 are in corresponding contact, so that the first sealing member 1 and the second sealing member 2 are buckled together to form an annular ring, and the two buckling parts are connected by a positioning pin 4, and a positioning hole 5 is provided on the end surface of the buckling part, and the two ends of the positioning pin 4 are respectively inserted into the corresponding positioning holes 5 to position and lock the first seal 1 and the second seal 2.

[0027] In this embodiment, if Figure 4-Figure 5 As shown, the present solution is a sealing element installed at the inlet of the blower impeller, which is used to prevent leakage of fluid gas or liquid. Specifically, the sealing ring is first processed into two semicircles, respectively forming a first sealing part 1 and a second sealing part 2, and is positioned by a positioning hole 5 and a positioning pin 4 during the final synthesis. This can significantly reduce the processing deformation problem caused by the characteristics of the stainless steel material. This method allows for more precise adjustment and alignment of the two semicircular parts after rough processing, thereby ensuring that the dimensions required by the drawing can be achieved during the fine processing stage. This improves the processing accuracy and the qualified rate of the product, and reduces the rework and scrap caused by unqualified dimensions.

[0028] Working principle:

[0029] First, a blank product with a full circular shape is processed through a forging process, and then the forging blank is rough-turned, leaving a single-side margin of 5mm for the inner diameter and outer circle, and then the complete ring-shaped sealing ring after rough turning is divided by wire cutting to form a first seal 1 and a second seal 2. Then, positioning holes 5 are punched on the first seal 1 and the second seal 2 to ensure that the first seal 1 and the second seal 2 can be combined into a complete circle through the positioning pin 4. Finally, a horizontal lathe is used to clamp the assembled first seal 1 and the second seal 2 with four jaws, and the inner diameter and the outer circle are fine-turned to finally achieve the size required by the drawing. Finally, the first seal 1 and the second seal 2 are assembled to obtain a qualified impeller inlet sealing ring.

[0030] In addition, a snap-fitting half ring 8 distributed along the outer edge trajectory is fixed to the outer edges of the first seal 1 and the second seal 2, and the two snap-fitting half rings 8 are buckled together with the first seal 1 and the second seal 2 to form a complete snap-fitting ring, which can assist in connecting it to the blower impeller.

[0031] Example 2:

[0032] This embodiment, based on the first embodiment, further includes a connector 3 at the joint between the first and second seals 1 and 2. The two ends of the connector 3 are respectively secured to the first and second seals 1 and 2. There are two connectors 3 at each joint, and the two connectors are fixed relative to each other on the two flat end surfaces of the joint between the first and second seals 1 and 2. Furthermore, the outer surfaces of the two connectors 3 at each joint, when locked together, are aligned at the same height as the flat end surfaces they are attached to.

[0033] The connector 3 has an N-shaped structure, comprising insertion protrusions 31 on either side and a central snap-in groove 32. Each flat end surface of the snap-in joint is provided with two connecting grooves 6 that match the insertion protrusions 31. These connecting grooves 6 are located on the first and second seals 1 and 2, respectively. When the two insertion protrusions 31 are inserted into the two connecting grooves 6, the first, second, and connectors 3 are locked. The snap-in grooves 32 are trapezoidal. Sealing gaskets 7 are fixedly attached to the end surfaces of both snap-in joints.

[0034] In this embodiment, the insertion protrusion 31 is provided to limit the combined first seal 1 and the second seal 2, provide additional fixing force, enhance the stability and reliability of the sealing ring, and ensure that the sealing ring will not loosen or fall off during operation. Since a snap-in groove 32 is provided at the bottom of the insertion protrusion 31, the snap-in groove 32 is a trapezoidal groove with an inclined surface on the inner side, and the connecting groove 6 is adapted to the connecting member 3, when the insertion protrusion 31 is stuck in the corresponding two connecting grooves 6, the first seal 1 and the second seal 2 can move closer to each other under the action of the inclined surface, thereby making the sealing gaskets 7 on the first seal 1 and the second seal 2 tightly abut, so as to improve the sealing between the first seal 1 and the second seal 2, thereby ensuring the sealing effect of the complete annular sealing ring after assembly.

[0035] Working principle:

[0036] By clamping the insertion protrusion 31 in the corresponding two connecting grooves 6, the combined first seal 1 and the second seal 2 can be limited, additional fixing force can be provided, and the stability and reliability of the sealing ring can be enhanced. In addition, under the action of the inclined surface, the first seal 1 and the second seal 2 can move closer to each other, thereby making the sealing gaskets 7 on the first seal 1 and the second seal 2 tightly abut, so as to improve the sealing between the first seal 1 and the second seal 2.

[0037] In addition, if Figure 5 As shown, a pair of reserved grooves 33 are provided on the end surface of the insertion protrusion 31 opposite to the insertion end, which can facilitate the disassembly of the connecting member 3.

[0038] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A blower impeller sealing ring, characterized in that: include: A first sealing member (1) and a second sealing member (2) having a semicircular structure; The two ends of the first seal (1) and the two ends of the second seal (2) are in corresponding contact, so that the first seal (1) and the second seal (2) are buckled together to form an annular ring, and the two buckled parts are connected by a positioning pin (4), and the end surfaces of the buckled parts are each provided with a positioning hole (5), and the two ends of the positioning pin (4) are respectively inserted into the corresponding positioning holes (5) to position and lock the first seal (1) and the second seal (2).

2. The blower impeller sealing ring according to claim 1, characterized in that: The fastening portion of the first sealing member (1) and the second sealing member (2) further comprises a connecting member (3), and both ends of the connecting member (3) are respectively clamped and fixed to the first sealing member (1) and the second sealing member (2).

3. The blower impeller sealing ring according to claim 2, characterized in that: There are two connecting pieces (3) at each buckling location, and the two connecting pieces are relatively fixed on the two flat end surfaces at the buckling location of the first sealing piece (1) and the second sealing piece (2).

4. The blower impeller sealing ring according to claim 3, characterized in that: The outer surfaces of the two connecting pieces (3) at each buckling position after being snapped and locked are both at the same height as the flat end surfaces where they are located.

5. The blower impeller sealing ring according to claim 3, characterized in that: The connecting member (3) is an N-shaped structure, comprising insertion protrusions (31) on both sides and a snap-fit ​​groove (32) in the middle. Two connecting grooves (6) matching the insertion protrusions (31) are provided on the flat end surface of each snap-fit ​​location. The two connecting grooves (6) are respectively located on the first sealing member (1) and the second sealing member (2). When the two insertion protrusions (31) are respectively inserted into the two connecting grooves (6), the first sealing member (1), the second sealing member (2) and the connecting member (3) are locked.

6. The blower impeller sealing ring according to claim 5, characterized in that: The clamping groove (32) is a trapezoidal groove.

7. The blower impeller sealing ring according to claim 5, characterized in that: A pair of reserved grooves (33) are provided on the end surface of the insertion protrusion (31) opposite to the insertion end.

8. The blower impeller sealing ring according to claim 1, characterized in that: Sealing pads (7) are fitted and fixed on the end surfaces of the two buckled parts.

9. The blower impeller sealing ring according to claim 1, characterized in that: The outer edges of the first sealing member (1) and the second sealing member (2) are both fixed with snap-fitting half rings (8) distributed along the tracks of their outer edges, and the two snap-fitting half rings (8) are buckled with the first sealing member (1) and the second sealing member (2) to form a complete snap-fitting ring.

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