Dynamic sealing structure of air blower

Abstract

The utility model relates to the technical field of air blowers, in particular to a dynamic sealing structure of an air blower, which comprises an air blower main body, a left shaft sleeve is arranged on the air blower main body, a rotating shaft is arranged on the left shaft sleeve, a bearing is arranged on the rotating shaft, a shaft plug is arranged on one side of the bearing, and a sealing block is arranged on one side of the shaft plug. A sealing block is arranged on the left shaft sleeve, a comb tooth ring is arranged on the sealing block, an air closing ring is arranged on the shaft plug, a right shaft sleeve is arranged on the comb tooth ring, and fixing holes are formed in the left shaft sleeve and the right shaft sleeve. According to the fan, the shaft plug is arranged, when the fan body works, a closed gas ring is arranged on the shaft plug, the shaft plug is rotationally connected with the rotating shaft, and the closed gas ring is tightly attached to the left shaft sleeve, so that a closed space is formed between the left shaft sleeve and the rotating shaft, part of gas cannot flow back, and the sealing effect is improved; and the leakproofness of the air blower is improved.

Description

Technical Field

[0001] This application relates to the technical field of blowers, and in particular to a dynamic sealing structure for a blower. Background Technology

[0002] A blower mainly consists of the following six parts: motor, air filter, blower body, air chamber, base (also serving as oil tank), and oil drip nozzle. Based on different working principles, blowers are divided into two main categories: impeller type and positive displacement type. Impeller type blowers can be further divided into axial flow, centrifugal, and mixed flow types. According to the pressure generated, blowers can be classified as blowers, compressors, and ventilators. During blower operation, a certain gap exists between the rotating shaft and the bushing. When conveying air, due to pipeline pressure, some gas will flow back through these gaps, causing internal leakage. Therefore, a new technical solution is needed to address the above-mentioned technical problems.

[0003] A search revealed Chinese Patent Publication No. CN218934798U, which discloses a dynamic sealing structure for a blower. The structure includes a rotating shaft and a bushing rotatably connected to the rotating shaft. The bushing has an annular groove on its inner circumference. Two fixing rings are fitted and fixedly connected to the rotating shaft, located within the annular groove. A limiting ring is fitted and fixedly connected to the rotating shaft between the two fixing rings. A carbon ring is fitted onto the surface of the limiting ring, and the inner circumference of the carbon ring has a limiting groove that matches the limiting ring. The structure also includes a positioning component for positioning the carbon ring. The purpose of this invention is to provide a dynamic sealing structure for a blower.

[0004] Regarding the aforementioned related technologies, the inventors have discovered the following defects: In the prior art, a limiting groove is provided on the inner wall of the carbon ring to position the limiting ring. However, due to the smooth surface of the carbon ring, it may be impossible to complete the locking after positioning. In order to solve the problem that the smooth surface of the carbon ring may cause the locking to fail after positioning, this application provides components such as a sealing ring and a shaft plug. Through the cooperation between the sealing ring and the shaft plug, a sealed space is formed between the bushing and the rotating shaft, preventing the internal gas from flowing back and thus improving the sealing effect. Utility Model Content

[0005] To address the problem that the smooth surface of the carbon ring in the prior art may prevent the engagement after positioning, this application provides a dynamic sealing structure for a blower.

[0006] This application provides a dynamic sealing structure for a blower, which adopts the following technical solution: it includes a blower body, a left shaft sleeve is provided on the blower body, a rotating shaft is provided on the left shaft sleeve, a bearing is provided on the rotating shaft, a shaft plug is provided on one side of the bearing, a sealing block is provided on one side of the shaft plug, a comb ring is provided on the sealing block, an air-sealing ring is provided on the shaft plug, and a right shaft sleeve is provided on the comb ring. Both the left and right shaft sleeves are provided with fixing holes.

[0007] Optionally, the shaft plug is provided with multiple slots, the air-sealing ring is in the shape of a "ring" and there are multiple air-sealing rings, and the shaft plug is engaged with the inner wall of the air-sealing ring.

[0008] Optionally, both the left and right bushings are hollow structures, and the outer wall of the air-sealing ring is tightly attached to the inner wall of the right bushing.

[0009] Optionally, the sealing block has a toothed groove, the inner wall of the comb ring has a circular toothed strip that is rotatably connected to the sealing block, and the outer wall of the comb ring is fixedly connected to the inner wall of the right bushing.

[0010] Optionally, the bearing is fixedly connected to the rotating shaft, and a ball bearing is provided on the bearing, the ball bearing being rotatably connected to the inner wall of the left bushing.

[0011] Optionally, the left bushing is fixedly connected to the blower body, and the left bushing and the right bushing are fixedly connected by fixing bolts.

[0012] Optionally, one end of the rotating shaft is rotatably connected to the blower body, and the rotating shaft is rotatably connected to the inner wall of the shaft plug and the inner wall of the sealing block.

[0013] In summary, this application includes the following beneficial technical effects:

[0014] 1. This utility model, by setting a shaft plug, when the blower body is working, places an air-sealing ring on the shaft plug, the shaft plug is rotatably connected to the rotating shaft, and the air-sealing ring is tightly attached to the left shaft sleeve, thereby forming a sealed space between the left shaft sleeve and the rotating shaft, preventing some gas from flowing back, increasing the sealing effect and improving the airtightness of the blower.

[0015] 2. By incorporating a sealing block, this utility model addresses the issue that a blower may generate a large amount of dust during operation, which could potentially enter the bushing through gaps. The sealing block and comb ring are tightly engaged, and the outer wall of the comb ring is fixedly connected to the inner wall of the right bushing, preventing external dust from entering the right bushing and thus ensuring a safe working environment for the blower. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure in an embodiment of this application;

[0017] Figure 2 This is a schematic diagram of the explosion structure in an embodiment of this application;

[0018] Figure 3 This is a schematic diagram of the shaft plug structure in an embodiment of this application;

[0019] Figure 4 This is a schematic diagram of the sealing block in an embodiment of this application.

[0020] Reference numerals in the attached diagram: 1. Blower body; 2. Bearing; 3. Rotating shaft; 4. Left bushing; 5. Right bushing; 6. Air-sealing ring; 7. Shaft plug; 8. Comb ring; 9. Sealing block; 10. Fixing hole; 11. Ball bearing. Detailed Implementation

[0021] The following is in conjunction with the appendix Figures 1-4 This application will be further described in detail below. The technical solutions in the embodiments of this application will be clearly described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0022] In the description of this application, it should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. For ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings indicate similar items; therefore, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings. It should be noted that the terms "first," "second," etc., in the specification and claims of this application are used to distinguish similar objects and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate so that embodiments of this application can be implemented in a sequence other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, the first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0023] This application discloses a dynamic sealing structure for a blower. For example... Figure 1 , Figure 2 , Figure 3 As shown, the device includes a blower body 1, a left shaft sleeve 4 on the blower body 1, a rotating shaft 3 on the left shaft sleeve 4, a bearing 2 on the rotating shaft 3, a shaft plug 7 on one side of the bearing 2, a sealing block 9 on one side of the shaft plug 7, a comb ring 8 on the sealing block 9, an air-sealing ring 6 on the shaft plug 7, and a right shaft sleeve 5 on the comb ring 8. Both the left shaft sleeve 4 and the right shaft sleeve 5 have fixing holes 10.

[0024] Please see Figure 2 , Figure 3 The shaft plug 7 is provided with multiple slots, the air-sealing ring 6 is in the shape of a "ring" and there are multiple air-sealing rings 6, the shaft plug 7 is sleeved with the inner wall of the air-sealing ring 6, the main material of the air-sealing ring 6 is composite rubber material, and the inner wall material of the shaft plug 7 is carbon graphite material.

[0025] Please see Figure 3 , Figure 4 The sealing block 9 has a toothed groove, and the inner wall of the comb ring 8 has a circular toothed strip that is rotatably connected to the sealing block 9. The outer wall of the comb ring 8 is fixedly connected to the inner wall of the right bushing 5. Both the sealing block 9 and the comb ring 8 are made of metal.

[0026] Please see Figure 2 Both the left bushing 4 and the right bushing 5 are hollow structures. The outer wall of the air-sealing ring 6 is tightly attached to the inner wall of the right bushing 5. The left bushing 4 is fixedly connected to the blower body 1. The left bushing 4 and the right bushing 5 are fixedly connected by fixing bolts.

[0027] Please see Figure 2 , Figure 3 The bearing 2 is fixedly connected to the rotating shaft 3. The bearing 2 is provided with a ball bearing 11, which is rotatably connected to the inner wall of the left bushing 4. One end of the rotating shaft 3 is rotatably connected to the blower body 1, and the rotating shaft 3 is rotatably connected to the inner wall of the shaft plug 7 and the inner wall of the sealing block 9.

[0028] The implementation principle of the dynamic sealing structure of a blower in this embodiment is as follows: When the blower body 1 is working, internally, by placing the air-sealing ring 6 on the shaft plug 7, the shaft plug 7 is rotatably connected to the rotating shaft 3, and the air-sealing ring 6 is tightly attached to the left shaft sleeve 4, a sealed space is formed between the left shaft sleeve 4 and the rotating shaft 3, preventing some gas from flowing back and increasing the sealing effect. Externally, by setting the sealing block 9 and the comb ring 8, the sealing block 9 and the comb ring 8 are tightly engaged, and the outer wall of the comb ring 8 is fixedly connected to the inner wall of the right shaft sleeve 5, so that external dust cannot enter the right shaft sleeve 5, thus not affecting the operation of the blower and ensuring a safe working environment for the blower.

[0029] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A dynamic seal structure of a blower comprising a blower body (1), characterized in that: The left shaft sleeve (4) is arranged on the air blower body (1), the rotating shaft (3) is arranged on the left shaft sleeve (4), the bearing (2) is arranged on the rotating shaft (3), the shaft plug (7) is arranged on one side of the bearing (2), the sealing block (9) is arranged on one side of the shaft plug (7), the comb tooth ring (8) is arranged on the sealing block (9), the air sealing ring (6) is arranged on the shaft plug (7), the right shaft sleeve (5) is arranged on the comb tooth ring (8), and the fixing hole (10) is arranged on the left shaft sleeve (4) and the right shaft sleeve (5).

2. The dynamic sealing structure of a blower according to claim 1, characterized in that: A plurality of clamping grooves are arranged on the shaft plug (7), the air sealing ring (6) is in the shape of a ring, and a plurality of air sealing rings (6) are arranged, the shaft plug (7) is sleeved with the inner wall of the air sealing ring (6).

3. A dynamic seal structure for a blower according to claim 2, wherein: The left shaft sleeve (4) and the right shaft sleeve (5) are both hollow structures, and the outer wall of the air sealing ring (6) is tightly attached to the inner wall of the right shaft sleeve (5).

4. The dynamic seal structure of a blower according to claim 1, characterized by: The sealing block (9) is provided with a tooth groove, the inner wall of the comb tooth ring (8) is provided with a circular gear rack, and the sealing block (9) is rotatably connected with the sealing block (9), and the outer wall of the comb tooth ring (8) is fixedly connected with the inner wall of the right shaft sleeve (5).

5. The dynamic seal structure of a blower according to claim 1, characterized by: The bearing (2) is fixedly connected to the rotating shaft (3), and the rotating ball (11) is arranged on the bearing (2) and rotatably connected with the inner wall of the left shaft sleeve (4).

6. The dynamic sealing structure of a blower according to claim 1, wherein: The left shaft sleeve (4) is fixedly connected to the air blower body (1), and the left shaft sleeve (4) and the right shaft sleeve (5) are fixedly connected through the fixing bolt.

7. The dynamic sealing structure of a blower according to claim 1, wherein: One end of the rotating shaft (3) is rotatably connected to the air blower body (1), and the rotating shaft (3) is rotatably connected with the inner wall of the shaft plug (7) and the inner wall of the sealing block (9).

Images